PHOTRAN CORP
10SB12G/A, 1996-05-24
GLASS PRODUCTS, MADE OF PURCHASED GLASS
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<PAGE>



                        U.S. SECURITIES AND EXCHANGE COMMISSION
                                 WASHINGTON, DC  20549

                                      -----------
   
                                    FORM 10-SB12G-A
    

                      GENERAL FORM FOR REGISTRATION OF SECURITIES
                     OF SMALL BUSINESS ISSUERS UNDER SECTION 12(b)
                        OR 12(g) OF THE SECURITIES ACT OF 1934

                                      -----------

                                  PHOTRAN CORPORATION

                    (Name of small business issuer in its charter)

         MINNESOTA                       3231                    41-1697628
  (STATE OR OTHER JURIS-     (PRIMARY STANDARD INDUSTRIAL     (I.R.S. EMPLOYER
 DICTION OF INCORPORATION    CLASSIFICATION CODE NUMBER)    IDENTIFICATION NO.)
     OR ORGANIZATION)

                                 21875 GRENADA AVENUE
                              LAKEVILLE, MINNESOTA 55044
                               TELEPHONE: (612) 469-4880

            (Address, including zip code, and telephone number, including
                area code, of registrant's principal executive offices)


              Securities to be registered under Section 12(b) of the Act:


    Title of Each Class                  Name of Each Exchange on Which
    to be so Registered                  Each Class is to be Registered
- ------------------------------          ----------------------------------
            None                                       None




              Securities to be registered under Section 12(g) of the Act:


                              Common Stock, no par value
                        --------------------------------
                                (Title of Class)

<PAGE>

ITEM 1.  DESCRIPTION OF BUSINESS.
   
    Incorporated by reference to material captioned "Prospectus Summary" and
"Business" in the Prospectus constituting a part of Amendment No. 2 to the
Registrant's Registration Statement on Form SB-2 filed with the Commission
May 24, 1996 (Registration No. 333-02700C) ("Amendment No. 2 to the Registrant's
Registration Statement").
    
ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OR PLAN OF OPERATION.
   
    Incorporated by reference to material captioned "Management's Discussion
and Analysis of Financial Condition and Results of Operations" in the Prospectus
constituting a part of Amendment No. 2 to the Registrant's Registration
Statement.
    
ITEM 3.  DESCRIPTION OF PROPERTY.
   
    Incorporated by reference to material captioned "Business-Facilities" in
the Prospectus constituting a part of Amendment No. 2 to the Registrant's
Registration Statement.
    
ITEM 4.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT.
   
    Incorporated by reference to material captioned "Principal Shareholders" in
the Prospectus constituting a part of Amendment No. 2 to the Registrant's
Registration Statement.
    
ITEM 5.  DIRECTORS, EXECUTIVE OFFICERS, PROMOTERS AND CONTROL PERSONS.

OFFICERS AND DIRECTORS

    The following table sets forth certain information concerning each of the
Company's directors and executive officers:

          Name             Age                      Position
- -------------------------  --- ------------------------------------------------
David E. Stevenson (3)     46  President, Chief Executive Officer, and Chairman
Paul T. Fink               40  Chief Financial Officer, Treasurer, Director
Kathleen V. Stevenson (2)  46  Secretary, Director
Robert S. Clarke (1)(3)    52  Director
Steven King (1)(2)         50  Director

- -----------
(1) Member of Audit Committee.
(2) Member of Compensation Committee.
(3) Member of Nominating Committee.

    The Board of Directors is divided into three classes, and directors serve
for staggered three-year terms. Kathleen V. Stevenson serves in a class with a
term expiring in 1997; Robert S. Clarke and Steven King serve in a class with a
term expiring in 1998; and David E. Stevenson and Paul T. Fink serve in a class
with a term expiring in 1999. Officers serve at the discretion of the Board.
David E. Stevenson and Kathleen V. Stevenson are husband and wife.

                                        - 2 -

<PAGE>

    DAVID E. STEVENSON, the founder of the Company, has been employed by and
served as a director and officer of the Company since its inception in May 1991.
From 1988 to 1991, Mr. Stevenson was employed as president and CEO of Viratec
Thin Films, Inc. and Viratec Tru Vue Inc. of Faribault, Minnesota. From 1984 to
1988, Mr. Stevenson was executive vice president and chief operating officer of
Viracon, Inc. of Owatonna, Minnesota. From 1983 to 1984, he was director of
corporate development for Apogee Enterprises, Inc., of Minneapolis, Minnesota.
Mr. Stevenson holds a Bachelor of Science degree in Engineering from the
University of Michigan and is also a Certified Public Accountant.

    PAUL T. FINK has been employed by the Company since January 1995. Mr. Fink
joined the Company as Controller, was named Chief Financial Officer in
February 1996 and was elected as a director in March 1996. Prior to joining the
Company, Mr. Fink was employed as the Chief Financial Officer of Vomela
Specialty Company, St. Paul, Minnesota, from 1989 to 1994 and Com-Tal Machine
and Engineering, Vadnais Heights, Minnesota, from 1984 to 1989. Mr. Fink was
employed by McGladrey & Pullen, Certified Public Accountants, as an auditor from
1980 to 1984. Mr. Fink holds a Bachelor of Science degree in Accounting from the
University of Minnesota, a Masters of Business Administration degree in
Financial Management from the University of St. Thomas, and is also a Certified
Public Accountant.

    KATHLEEN V. STEVENSON has been a director and officer of the Company since
November 1991 and is a part-time employee of the Company responsible for human
resource matters. Ms. Stevenson has owned and operated a tableware and linen
mail order company in Wayzata, Minnesota since 1984. Previously she has been
employed in various financial management and staff positions with Norwest Bank,
Minneapolis, Minnesota, Michigan Bank, Detroit, Michigan, and City National
Bank, Detroit, Michigan. Ms. Stevenson holds a Bachelor of Science degree in
Accounting from Michigan State University.

    ROBERT S. CLARKE has been a director of the Company since March 1993. Since
1981 Mr. Clarke has been the President of Alpen, Inc., Boulder, Colorado, a
leading manufacturer of architectural insulating glass. Since 1991 Mr. Clarke
has also been President, Chairman and a director of Vac-Tec Systems, Inc., a
public company involved in the manufacture of high performance windows utilizing
suspended vacuum coated films.

    STEVEN KING has been a director of the Company since May 1993. Since 1986
Mr. King has been Chairman and CEO of Landscape Structures, Inc., of Delano,
Minnesota, a company which creates and manufactures innovative play structures
promoting early childhood development. Mr. King is also a registered architect.

KEY PERSONNEL

    DR. ALEX ERSHOV has been employed by the Company as Chief Process Scientist
since May 1995.  Dr. Ershov is a research and development scientist with a
background in the development of innovative thin film deposition processes.  He
is primarily responsible for the development of the Company's high rate
microwave atomic oxygen deposition process.  Dr. Ershov holds a Ph.D. in Physics
from the General Physics Institute of Moscow.

    JAMES GRIESER has been employed by the Company as Manager of Thin Film
Process Engineering since December 1995.  Mr. Grieser has 15 years of process
research and development experience in vacuum deposited thin film coatings.  He
has developed several unique thin film materials for use in aerospace and
military applications.  He holds a B.S. degree in Physics from Elmhurst College.

                                        - 3 -

<PAGE>

ITEM 6.  EXECUTIVE COMPENSATION.
   
    Incorporated by reference to material captioned "Management-Executive
Compensation" in the Prospectus constituting a part of Amendment No. 2 to the
Registrant's Registration Statement.
    
ITEM 7.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.
   
    Incorporated by reference to material captioned "Certain Transactions" in
the Prospectus constituting a part of Amendment No. 2 to the Registrant's
Registration Statement.
    
ITEM 8.  LEGAL PROCEEDINGS.

    None.

ITEM 9.  MARKET FOR COMMON EQUITY AND RELATED SHAREHOLDER MATTERS.
   
    Incorporated by reference to material captioned "Risk Factors",
"Description of Capital Stock", and "Shares Eligible for Future Sale" in the
Prospectus constituting a part of Amendment No. 2 to the Registrant's
Registration Statement.
    
ITEM 10. RECENT SALES OF UNREGISTERED SECURITIES.
   
    Incorporated by reference to material captioned "Recent Sales of
Unregistered Securities" in Part II to Amendment No. 2 to the Registrant's
Registration Statement.
    
ITEM 11. DESCRIPTION OF SECURITIES.
   
    Incorporated by reference to material captioned "Description of Capital
Stock" in the Prospectus constituting a part of Amendment No. 2 to the
Registrant's Registration Statement.
    
ITEM 12. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
   
    Incorporated by reference to material captioned "Management-Indemnification
and Waiver of Director Liability" in the Prospectus constituting a part of
Amendment No. 2 to the Registrant's Registration Statement and to material
captioned "Indemnification of Directors and Officers" in Part II of Amendment
No. 2 to the Registrant's Registration Statement.
    
ITEM 13. FINANCIAL STATEMENTS.
   
    Incorporated by reference to material captioned "Financial Statements" in
the Prospectus constituting a part of Amendment No. 2 to the Registrant's
Registration Statement.
    
ITEM 14. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE.

    None.

                                        - 4 -

<PAGE>

ITEM 15. FINANCIAL STATEMENTS AND EXHIBITS.

    (a)  LIST OF FINANCIAL STATEMENTS.
   
    Incorporated by reference to material captioned "Index to Financial
Statements" in the Prospectus constituting a part of Amendment No. 2 to the
Registrant's Registration Statement.
    
    (b)  EXHIBITS.

    The following exhibits are incorporated by reference to the exhibits
furnished with the Registrant's Registration Statement on Form SB-2 originally
filed with the Commission on March 22, 1996 (Registration No. 333-02700C):

 EXHIBIT
   NO.                             DESCRIPTION
   ---                             -----------
  1.1   Underwriting Agreement, including Representative's Warrant.

  1.2   Agreement Among Underwriters.

  1.3   Selected Dealers Agreement.

  3.1   Second Amended and Restated Articles of Incorporation of Photran
        Corporation, effective March 2, 1996.

  3.2   Amended and Restated By-Laws of Photran Corporation, effective
        December 23, 1992, as amended through February 3, 1996.

  4.1   Second Amended and Restated Articles of Incorporation and Amended and
        Restated By-Laws of Photran Corporation as amended. (See Exhibits 3.1
        and 3.2 above.)

  4.2   Specimen of Common Stock Certificate (to be filed by Amendment).

  4.3   Warrant for Purchase of Shares of Common Stock, dated November 18, 1992,
        for the purchase of 1,700 shares, issued to Christopher T. Vanyo. An
        identical Warrant For Purchase of Shares of Common Stock was granted to
        one other individual for the purchase of 1,600 shares.
   
  4.4   Common Stock Purchase Warrant, dated January 5, 1993, for the purchase
        of 29,500 shares, issued to R. J. Steichen & Company. Identical Common
        Stock Purchase Warrants in the amounts of 149,964 shares, 35,000 shares
        and 105,254 shares were granted to R. J. Steichen & Company on 
        February 19, 1993, February 19, 1993, and March 17, 1993, 
        respectively.
    
  4.5   Form of Warrant for Purchase of Shares of Common Stock. Identical
        Warrants for Purchase of Shares of Common Stock in the amounts of 20,000
        shares and 60,000 shares were granted to a total of eleven individuals
        on August 8, 1993 and September 23, 1993, respectively.
   
  4.6   Common Stock Purchase Warrant, dated September 23, 1993, for the 
        purchase of 48,500 shares, issued to R. J. Steichen & Company. An 
        identical Common Stock Purchase Warrant in the amount of 11,500 
        shares was granted to R. J. Steichen & Company on September 24, 1993.
    
  4.7   Form of Promissory Note. Identical Notes totaling $600,000 in principal
        amount were executed by Photran Corporation in favor of ten individuals
        on September 23, 1993.

                                        - 5 -
<PAGE>

 EXHIBIT
   NO.                             DESCRIPTION
   ---                             -----------
   
  4.8   Common Stock Purchase Warrant, dated January 7, 1994, for the purchase
        of 140,115 shares, issued to R. J. Steichen & Company. Identical 
        Common Stock Purchase Warrants in the amounts of 11,730 shares and 
        36,635 shares were granted to R. J. Steichen & Company on January 31, 
        1994 and February 18, 1994, respectively.
    
  4.9   Stock Purchase Warrant for 75,000 shares of Common Stock, dated May 1,
        1995, granted to Steven King.

  4.10  Promissory Note, dated May 1, 1995, executed by Photran Corporation in
        favor of Steven King.

  4.11  Promissory Note, dated May 26, 1995, executed by Photran Corporation in
        favor of Bank of America National Trust and Savings Association, dated
        May 26, 1995.

  4.12  Form of Warrant for Purchase of Shares of Common Stock. Identical
        Warrants for Purchase of Shares of Common Stock were granted to a total
        of 28 individuals on October 15, 1995 to purchase a total of 400,000
        shares.

  4.13  Form of Secured Promissory Note. Identical Notes were executed by
        Photran Corporation in favor of 28 individuals on October 15, 1995 for a
        total principal amount of $4,000,000.

  4.14  Agent's Warrant to Purchase 40,000 shares of Common Stock, dated
        October 31, 1995, granted to John G. Kinnard and Company, Incorporated.

  5.1   Opinion of Henson & Efron, P.A. (to be filed by Amendment).

 10.1   Contract Agreement for the Joint Venture of Shenzhen Fortune Conductive
        Glass Company, Ltd., between Photran Corporation and Shenzhen Wabo
        (Group) Company, Limited.

 10.2   License Agreement between Photran Corporation and Applied Elastromerics
        dated May 30, 1991, as amended.

 10.3   Office Warehouse Lease between Owobopte Rehabilitation Industries, Inc.
        and Photran Corporation dated July 1991.

 10.4   Photran Corporation 1992 Stock Option Plan.

 10.5   Form of Incentive Option Agreement. Identical Incentive Option
        Agreements were entered into with 66 employees for purchase of a total
        of 76,250 shares.

 10.6   Employment Agreement between David E. Stevenson and Photran Corporation
        dated January 1, 1993.

 10.7   Form of Bridge Loan Agreement. Identical Loan agreements were entered
        into between Photran Corporation and ten individuals on September 23,
        1993 for a total principal amount of $600,000.

 10.8   Working Capital Guarantee Program Borrower Agreement between Photran
        Corporation and Bank of America National Trust and Savings Association,
        dated September 1, 1994.

 10.9   Loan Agreement, dated May 1, 1995, between Photran Corporation and
        Steven King.

 10.10  Eximbank-Guaranteed Line of Credit Agreement between Photran Corporation
        and Bank of America National Trust and Savings Association dated May 26,
        1995, as amended.

                                        - 6 -

<PAGE>

 EXHIBIT
   NO.                             DESCRIPTION
   ---                             -----------

 10.11  Guaranty of indebtedness dated May 26, 1995, executed by David E.
        Stevenson in favor of Bank of America National Trust and Savings
        Association.

 10.12  Irrevocable Letter of Credit issued by China Merchants Bank at the
        request of Shenzhen WABO Group Co. Ltd. for the benefit of Photran
        Corporation.

 10.13  Distribution Agreement between Photran Corporation and Yorkwell Company
        Limited dated September 6, 1994.

 10.14  Form of Subscription and Loan Agreement. Identical Subscriptions and
        Loan agreements were entered into with 28 individuals on October 25 or
        31, 1995 for a total principal amount of $4,000,000.

 10.15  Office Warehouse Lease between Sparta Foods, Inc. and Photran
        Corporation dated December 21, 1995.

 10.16  Amended and Restated Bridge Loan Agreement between Steven King and
        Photran Corporation dated March 15, 1996.

 11.1   Statement re Computation of Per Share Earnings.

 23.1   Consent of Henson & Efron, P.A. (included in Exhibit 5.1).

 23.2   Consent of Deloitte & Touche LLP (to be filed by Amendment).

 25.1   Powers of Attorney.

  (c)  ADDITIONAL EXHIBITS FILED PURSUANT TO RULE 240.12b-23(a)(3).

 EXHIBIT
   NO.                             DESCRIPTION
   ---                             -----------
   
  C-1  Amendment No. 2 to Registrant's Registration Statement on Form SB-2
       filed May 24, 1996 (Registration No. 333-02700C), without exhibits.
    
                                        - 7 -

<PAGE>

                                      SIGNATURES

In accordance with Section 12 of the Securities Exchange Act of 1934, the
registrant caused this registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                            PHOTRAN CORPORATION

   
Dated:  May 23, 1996                        By:  /s/ David E. Stevenson
                                                -------------------------
                                                 David E. Stevenson
                                                 Its President
    

                                        - 8 -

<PAGE>

                             INDEX TO ADDITIONAL EXHIBITS

 EXHIBIT                                                        SEQUENTIAL
   NO.                             DESCRIPTION                   PAGE NO.
   ---                             -----------                    --------
   
   C-1   Amendment No. 2 to Registrant's Registration Statement
         on Form SB-2 filed May 24, 1996 (Registration No.
         333-02700C). . . . . . . . . . . . . . . . . . . . . . .    10
    




<PAGE>
   
      AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MAY 24, 1996
    
                                                     REGISTRATION NO. 333-02700C
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                    U.S. SECURITIES AND EXCHANGE COMMISSION
                            CHICAGO, ILLINOIS 60661
                         ------------------------------
   
                                 AMENDMENT NO 2
                                       TO
    
                                   FORM SB-2
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
                              PHOTRAN CORPORATION
                 (Name of small business issuer in its charter)
 
        MINNESOTA                        3231                    41-1697628
  (STATE OR OTHER JURIS-     (PRIMARY STANDARD INDUSTRIAL     (I.R.S. EMPLOYER
 DICTION OF INCORPORATION    CLASSIFICATION CODE NUMBER)    IDENTIFICATION NO.)
     OR ORGANIZATION)
 
                              21875 GRENADA AVENUE
                           LAKEVILLE, MINNESOTA 55044
                           TELEPHONE: (612) 469-4880
 
         (Address, including zip code, and telephone number, including
            area code, of registrant's principal executive offices)
 
                         DAVID E. STEVENSON, PRESIDENT
                              PHOTRAN CORPORATION
                              21875 GRENADA AVENUE
                           LAKEVILLE, MINNESOTA 55044
                           TELEPHONE: (612) 469-4880
           (Name, address and telephone number of agent for service)
                         ------------------------------
 
                          COPIES OF COMMUNICATIONS TO:
 
      Jeffrey N. Saunders, Esq.                  D. William Kaufman, Esq.
         Henson & Efron, P.A.                  Oppenheimer Wolff & Donnelly
    1200 Title Insurance Building                       Suite 3400
       400 Second Avenue South                   45 South Seventh Street
        Minneapolis, MN 55401                     Minneapolis, MN 55402
      Telephone: (612) 339-2500                 Telephone: (612) 344-9300
 
                         ------------------------------
 
               APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE:
   AS SOON AS PRACTICABLE AFTER THE REGISTRATION STATEMENT BECOMES EFFECTIVE.
 
    If  this Form  is filed  to register  additional securities  for an offering
pursuant to Rule 462(b)  under the Securities Act,  check the following box  and
list  the  Securities Act  registration  statement number  of  earlier effective
registration statement for the same offering. / / ______________________________
 
    If this Form  is a post-effective  amendment filed pursuant  to Rule  462(c)
under  the Securities Act, check  the following box and  list the Securities Act
registration statement number  of the earlier  effective registration  statement
for the same offering. / / _____________________________________________________
 
    If  delivery of the prospectus is expected  to be made pursuant to Rule 434,
please check the following box. / /
 
                        CALCULATION OF REGISTRATION FEE
 
   
<TABLE>
<CAPTION>
                                                             PROPOSED MAXIMUM    PROPOSED MAXIMUM
        TITLE OF EACH CLASS OF              AMOUNT TO         OFFERING PRICE        AGGREGATE           AMOUNT OF
     SECURITIES TO BE REGISTERED          BE REGISTERED        PER UNIT (1)     OFFERING PRICE (1)   REGISTRATION FEE
<S>                                     <C>                 <C>                 <C>                 <C>
Common Stock, No par value............   2,300,000 shares
                                               (2)                $9.00            $20,700,000          $7,137.93
Representative's warrant (3)..........   160,000 warrants         $.0003               $50                 $.02
Common Stock underlying
 Representative's warrant.............    160,000 shares          $10.80            $1,728,000           $595.86
TOTAL.................................                                             $22,428,050          $7,733.81
</TABLE>
    
 
(1) Estimated solely for purposes of calculating the registration fee.
 
   
(2) Includes  a  maximum  of  300,000  shares which  may  be  purchased  by  the
    Underwriters to cover over-allotment, if any.
    
 
(3) To be sold to the Representative at the closing.
 
    THE  REGISTRANT HEREBY  AMENDS THIS REGISTRATION  STATEMENT ON  SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A  FURTHER  AMENDMENT  WHICH SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT  SHALL THEREAFTER BECOME EFFECTIVE IN  ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT  OF 1933,  AS AMENDED  OR UNTIL  THIS REGISTRATION  STATEMENT
SHALL  BECOME EFFECTIVE ON SUCH DATE AS  THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(A), MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                              PHOTRAN CORPORATION
                             CROSS REFERENCE SHEET
 
<TABLE>
<CAPTION>
FORM SB-2 ITEM NUMBER AND DESCRIPTION                                       CAPTION OF LOCATION IN PROSPECTUS
- ----------------------------------------------------------------  -----------------------------------------------------
<C>        <S>                                                    <C>
       1.  Front of Registration Statement and Outside Front
            Cover of Prospectus.................................  Front of Registration Statement; Outside Front Cover
       2.  Inside Front and Outside Back Cover Pages of
            Prospectus..........................................  Inside Front Cover; Outside Back Cover; Available
                                                                   Information
       3.  Summary Information and Risk Factors.................  Prospectus Summary; Risk Factors
       4.  Use of Proceeds......................................  Use of Proceeds
       5.  Determination of Offering Price......................  Outside Front Cover; Risk Factors; Underwriting
       6.  Dilution.............................................  Dilution
       7.  Selling Security Holders.............................  Not Applicable
       8.  Plan of Distribution.................................  Outside Front Cover; Underwriting
       9.  Legal Proceedings....................................  None
      10.  Directors, Executive Officers, Promoters and Control
            Persons.............................................  Management; Principal Shareholders
      11.  Security Ownership of Certain Beneficial Owners and
            Management..........................................  Principal Shareholders
      12.  Description of Securities............................  Description of Capital Stock
      13.  Interest of Named Experts and Counsel................  Legal Matters; Experts
      14.  Disclosure of Commission Position on Indemnification
            for Securities Act Liabilities......................  Management; Underwriting
      15.  Organization Within Last 5 Years.....................  Prospectus Summary; Business
      16.  Description of Business..............................  Prospectus Summary; Business
      17.  Management's Discussion and Analysis or Plan of
            Operation...........................................  Management's Discussion and Analysis of Financial
                                                                   Condition and Results of Operations
      18.  Description of Property..............................  Prospectus Summary; Business
      19.  Certain Relationships and Related Transactions.......  Certain Transactions
      20.  Market for Common Equity and Related Stockholder
            Matters.............................................  Risk Factors; Executive Compensation; Description of
                                                                   Capital Stock; Shares Eligible for Future Sale
      21.  Executive Compensation...............................  Management
      22.  Financial Statements.................................  Prospectus Summary; Capitalization; Selected
                                                                   Financial Data; Financial Statements
      23.  Changes In and Disagreements With Accountants on
            Accounting and Financial Disclosure.................  None
</TABLE>
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN  ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
   
                   SUBJECT TO COMPLETION, DATED MAY 24, 1996
    
PROSPECTUS
 
   
                                2,000,000 SHARES
    
                                     [LOGO]
 
                                  COMMON STOCK
 
    All of the shares  of Common Stock offered  hereby (the "Shares") are  being
sold by Photran Corporation ("Photran" or the "Company"). Prior to this Offering
there  has been  no public  market for the  Common Stock  of the  Company. It is
currently estimated that the initial public offering price will be between $8.00
and  $9.00  per  Share.  See  "Underwriting"  for  the  factors  considered   in
determining the initial public offering price. Application has been made to have
the  Common Stock approved for  trading on the Nasdaq  National Market under the
symbol "PTRN."
 
                            ------------------------
 
   
    THE COMMON STOCK OFFERED  BY THIS PROSPECTUS IS  SPECULATIVE AND INVOLVES  A
HIGH  DEGREE OF RISK  AND IMMEDIATE SUBSTANTIAL DILUTION.  SEE "RISK FACTORS" ON
PAGE 5 AND "DILUTION" ON PAGE 11.
    
                             ---------------------
 
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
    EXCHANGE COMMISSION OR  ANY STATE SECURITIES  COMMISSION NOR HAS  THE
       SECURITIES  AND EXCHANGE COMMISSION  OR ANY STATE SECURITIES
             COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF
                  THIS PROSPECTUS. ANY REPRESENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                        PRICE TO         UNDERWRITING        PROCEEDS TO
                                         PUBLIC          DISCOUNT (1)        COMPANY (2)
<S>                                 <C>                <C>                <C>
Per Share.........................          $                  $                  $
Total (3).........................          $                  $                  $
</TABLE>
 
(1) The Company has agreed to pay to John G. Kinnard and Company,  Incorporated,
    as  representative of  the several  Underwriters (the  "Representative") its
    accountable expenses in connection  with this Offering in  an amount not  to
    exceed  $50,000, of which $10,000 has been paid. The Company has also agreed
    to sell to  the Representative, for  a nominal purchase  price, a  five-year
    warrant  to purchase  up to 160,000  shares of Common  Stock, exercisable at
    120% of  the  Price  to Public.  In  addition,  the Company  has  agreed  to
    indemnify   the   Underwriters   against   certain   liabilities,  including
    liabilities under the Securities  Act of 1933,  as amended (the  "Securities
    Act"). See "Underwriting."
 
   
(2)  Before  deducting expenses  payable by  the  Company estimated  at $400,000
    (including the Representative's  accountable expenses referenced  in note  1
    above). See "Underwriting."
    
 
   
(3)  The Company has granted the Underwriters  a 30-day option to purchase up to
    300,000 additional shares of Common  Stock solely to cover  over-allotments,
    if  any. If  such option is  exercised in  full, the total  Price to Public,
    Underwriting Discount and Proceeds to Company will be $       , $        and
    $       , respectively. See "Underwriting."
    
 
    The  Shares are being  offered by the several  Underwriters subject to prior
sale, to withdrawal, cancellation or  modification of the offer without  notice,
to  delivery  to  and  acceptance  by  the  Underwriters  and  to  certain other
conditions. It is expected that delivery of the Shares will be made on or  about
            , 1996 in Minneapolis, Minnesota.
 
                            ------------------------
 
                   JOHN G. KINNARD AND COMPANY, INCORPORATED
                                  ------------
 
               The date of this Prospectus is             , 1996
<PAGE>
IN  CONNECTION WITH  THIS OFFERING,  THE UNDERWRITERS  MAY OVER-ALLOT  OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE  MARKET PRICE OF COMMON STOCK AT  A
LEVEL  ABOVE  THAT  WHICH  MIGHT  OTHERWISE PREVAIL  IN  THE  OPEN  MARKET. SUCH
STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
                                       2
<PAGE>
                               PROSPECTUS SUMMARY
 
   
    THE  FOLLOWING SUMMARY  IS QUALIFIED  IN ITS  ENTIRETY BY  THE MORE DETAILED
INFORMATION AND  FINANCIAL STATEMENTS,  INCLUDING THE  NOTES THERETO,  APPEARING
ELSEWHERE IN THIS PROSPECTUS. UNLESS OTHERWISE INDICATED, ALL INFORMATION HEREIN
(I)  ASSUMES  NO EXERCISE  OF THE  UNDERWRITERS' OVER-ALLOTMENT  OPTION (300,000
SHARES) OR  THE CURRENTLY  OUTSTANDING  OPTIONS AND  WARRANTS (AN  AGGREGATE  OF
1,039,850  SHARES), AND  (II) GIVES  EFFECT TO  A 1-FOR-2  REVERSE SPLIT  OF THE
COMMON STOCK TO BECOME EFFECTIVE IMMEDIATELY PRIOR TO THE EFFECTIVENESS OF  THIS
OFFERING. SEE "DESCRIPTION OF CAPITAL STOCK" AND "UNDERWRITING."
    
 
                                  THE COMPANY
 
    Photran  Corporation ("Photran" or the "Company") develops, manufactures and
markets innovative  high performance  optical and  electrically conductive  thin
film  coated products. The  Company has developed  a unique, proprietary process
technology known as FUZION-TM- planar magnetron sputtering. This process is used
to apply microscopically  thin layers  of metal, metal  oxide, nitride,  boride,
carbide,  floride  and  diamond-like coatings  to  a wide  variety  of substrate
materials. These thin  film coatings  provide essential  optical, electrical  or
durability properties to a substrate material such as glass, metal or plastic.
 
    The   Company  believes   its  FUZION   process  represents   a  fundamental
breakthrough in thin film  coating technology. The  Company's FUZION process  is
capable  of producing "ultra-high" grade thin  film coatings, as defined in U.S.
government standards. Most high quality thin film coatings are applied in a  low
volume  batch  type  process.  The  FUZION  process  is  a  continuous "in-line"
production system  which permits  the Company  to coat  larger sized  substrates
while  achieving  a  higher  level  of productivity  and  quality  than  that of
competing technologies of which the Company is aware. Based on its knowledge  of
the  technologies  employed  by its  competition,  the Company  believes  it can
produce thin film  coatings at production  rates that are  several times  faster
than   the  rates  achievable  by   competing  technologies.  See  "Business  --
Technology."
 
    The Company's  strategy is  to leverage  the competitive  cost, quality  and
feature  advantages which  it believes the  FUZION process provides  to secure a
strong market position in the manufacture and sale of the following products:
 
    ITO COATED GLASS PRODUCTS.  The Company is  currently engaged in  commercial
    production  of  its  PCO-Registered  Trademark- brand  of  indium  tin oxide
    ("ITO") optically  transparent, electrically  conductive glass.  ITO  coated
    glass  is used in all types of flat  panel displays such as lap top computer
    screens, digital watches and calculators.
 
    ANTI-REFLECTION PRODUCTS.  The Company  has  commenced pilot  production  of
    several  products which incorporate a  patented anti-reflection ("A/R") thin
    film coating for eliminating glare  and absorbing ultraviolet ("UV")  light.
    In  the second quarter of 1996,  when the Company completes the installation
    of its second coating line, it expects to begin full scale production of the
    first product in  its ZeroRay-TM- line  of glare and  radiation filters  for
    computer  monitors and televisions. The same  technology will be used in the
    Company's UVAR-TM- low reflection, UV  light blocking and scratch  resistant
    eyeglass  lenses, and in  its A/R coated  PolarClear-TM- polarizing film for
    flat panel displays such as those found in lap top computers. Both of  these
    products  are scheduled to be introduced in the third quarter of 1996. After
    the installation of  a third FUZION  coating production line  in the  second
    half  of  1996,  which  will  be  capable  of  handling  even  larger  sized
    substrates, the  Company intends  to begin  production of  ArtGlas-TM-,  its
    anti-reflection, UV light blocking picture framing glass.
 
   
    ENHANCED  REFLECTION MIRRORS.  The Company  commenced shipments  of enhanced
    reflection mirror ("ERM") products on a  limited basis in the first  quarter
    of  1996. The Company intends to begin commercial production of its standard
    PMAX-Registered Trademark- brand front surface mirrors in the second half of
    1996. ERMs  are  used  in  projection televisions,  document  and  bar  code
    scanners,    photocopiers,   overhead   projectors   and   other   specialty
    applications.
    
 
    Photran was incorporated  under the laws  of the State  of Minnesota in  May
1991.  The Company's  principal executive offices  are located  at 21875 Grenada
Avenue, Lakeville, Minnesota 55044, and its telephone number is (612) 469-4880.
 
                                       3
<PAGE>
                                  THE OFFERING
 
   
<TABLE>
<S>                                            <C>
Common Stock offered.........................  2,000,000 Shares
Common Stock outstanding after this            4,837,323 Shares
 Offering....................................
Use of proceeds..............................  Repayment of debt, acquisition of additional
                                               equipment and capital improvements, market-
                                               ing and sales, product development and work-
                                               ing capital and general corporate purposes.
                                               See "Use of Proceeds."
Proposed Nasdaq National Market symbol.......  PTRN
</TABLE>
    
 
                             SUMMARY FINANCIAL DATA
 
<TABLE>
<CAPTION>
                                                                   YEAR ENDED                 THREE MONTHS ENDED
                                                                  DECEMBER 31,                    MARCH 31,
                                                          -----------------------------  ----------------------------
                                                               1994           1995           1995           1996
                                                          --------------  -------------  -------------  -------------
<S>                                                       <C>             <C>            <C>            <C>
STATEMENT OF OPERATIONS DATA:
  Revenues..............................................  $      914,736  $   3,362,818  $     217,595  $   1,137,950
  Cost of sales.........................................       1,016,628      2,048,522         96,933        676,782
  Gross profit (loss)...................................        (101,892)     1,314,296        120,662        461,168
  Operating expenses....................................       1,240,903        977,853        198,370        321,301
  Operating income (loss)...............................      (1,342,795)       336,443        (77,708)       139,867
  Interest expense, net.................................         (62,240)      (286,430)       (17,323)       (60,838)
  Net income (loss).....................................  $   (1,405,035) $      50,013  $     (95,031) $      79,029
  Net income (loss) per common and common equivalent
   share (1)(2).........................................  $         (.47) $         .02  $        (.03) $         .02
  Weighted average common and common equivalent shares
   outstanding (1)(2)...................................       3,015,640      3,334,114      3,334,114      3,334,114
</TABLE>
 
   
<TABLE>
<CAPTION>
                                                                                              MARCH 31, 1996
                                                                       DECEMBER 31,   ------------------------------
                                                                           1995           ACTUAL      AS ADJUSTED(3)
                                                                      --------------  --------------  --------------
<S>                                                                   <C>             <C>             <C>
BALANCE SHEET DATA:
  Working capital (deficit).........................................  $   (3,216,717) $   (4,420,587) $   10,734,413
  Total assets......................................................      14,192,655      14,437,923      24,210,933
  Current liabilities...............................................      10,195,516      10,834,220       5,584,220
  Long-term debt, net of current maturities.........................         762,783         290,318         290,318
  Accumulated deficit...............................................      (3,436,861)     (3,357,832)     (3,489,822)
  Shareholders' equity..............................................       3,234,356       3,313,385      18,336,395
</TABLE>
    
 
- ------------------------
 
(1) Gives  effect to  a 1-for-2  reverse split  of the  Common Stock  to  become
    effective immediately prior to the effectiveness of this Offering.
(2)  See Note 2 to Financial Statements  for an explanation of the determination
    of weighted average common and common equivalent shares outstanding.
(3) As adjusted to reflect  the sale of the  Shares offered hereby, assuming  an
    initial  Price to Public of $8.50 per  Share, and the application of the net
    proceeds therefrom, including the  repayment of $4  million of principal  of
    Bridge  Notes and  approximately $250,000  of accrued  interest thereon, the
    repayment of a $1 million loan from a director and the write-off of deferred
    financing costs of $131,990 incurred in connection with the issuance of  the
    Bridge  Notes. See "Use of  Proceeds," "Management's Discussion and Analysis
    of  Financial   Condition   and   Results  of   Operations"   and   "Certain
    Transactions."
 
                                       4
<PAGE>
                                  RISK FACTORS
 
    IN  ADDITION  TO THE  OTHER INFORMATION  IN  THIS PROSPECTUS,  THE FOLLOWING
FACTORS SHOULD BE CONSIDERED CAREFULLY BY POTENTIAL PURCHASERS IN EVALUATING  AN
INVESTMENT IN THE COMMON STOCK OFFERED HEREBY.
 
LIMITED HISTORY OF OPERATIONS; ACCUMULATED DEFICIT
 
    From  its  inception on  May  3, 1991  through  June 1995,  the  Company was
primarily  engaged  in  the  development  of  process  and  product  technology,
modifying  coating  equipment acquired  by the  Company, designing  and building
additional equipment, product development and limited commercial production.  As
part  of  its development  efforts, the  Company began  pilot production  of ITO
coated glass in the second half of 1993; in the second half of 1994 the  Company
made  a  strategic decision  to shut  down  manufacturing operations  to rebuild
portions of  its  equipment. In  July  1995 the  Company  resumed  manufacturing
operations  and  began  to  scale up  its  production  activities.  The Company,
therefore, has  a  limited  operating  history  which  makes  it  difficult  for
investors to evaluate the ability of the Company to expand the manufacturing and
marketing  of its products  sufficiently to maintain  or increase profitability.
The Company also faces all of the  risks inherent in the start-up and  operation
of  any new business. Although the Company had net income of $50,013 in 1995 and
$79,029 for the  first three  months of  1996, there  can be  no assurance  that
operating  losses will not  occur in future  periods. As of  March 31, 1996, the
Company had incurred an accumulated deficit of $3,357,832.
 
DEPENDENCE ON INITIAL PRODUCT; NEED FOR ADDITIONAL EQUIPMENT
 
    To date, more  than 90%  of the Company's  sales have  been twisted  nematic
("TN")  grade  ITO  coated glass,  and  its revenues,  therefore,  are currently
dependent upon the  sale of a  single product  that is subject  to strong  price
competition.  The Company's future performance depends,  in part, on its ability
to increase its capacity and efficiencies in the production of ITO coated  glass
and  other products. The Company is  working to develop additional products, new
technologies and  new  manufacturing equipment.  A  significant portion  of  the
proceeds  from this  Offering will  be used  to fund  these activities,  and the
Company's future  success  will depend  in  part  upon its  success  with  these
development  efforts. See "Use of Proceeds." Specifically, the Company is in the
process of  installing additional  equipment on  its existing  production  line,
which  will give it  the capacity to  manufacture new products,  and to increase
production efficiencies  and  product quality.  The  Company is  also  currently
installing  a second production  line which it expects  to be operational during
the second quarter of 1996. A third production line is expected to be  installed
in  the second  half of  1996. The success  of the  Company is  dependent on the
completion of  these improvements  and  installations which  will enable  it  to
produce  additional products in sufficient  quantities and at acceptable quality
levels on an  efficient basis. Failure  to do  so will have  a material  adverse
effect  on the Company. No  assurance can be given  that the Company's timetable
for these  development  plans  will be  achieved,  that  sufficient  development
resources will be available, or that development efforts will be successful.
 
    During  installation and pilot  production of its  existing production line,
the Company experienced  several operational and  technical difficulties.  There
can be no assurance that it will not experience similar problems with its second
and third production lines. See "Business -- Manufacturing."
 
DEPENDENCE ON MAJOR CUSTOMERS
 
    For  the year ended December 31, 1995,  sales to two customers accounted for
approximately 57%  and 28%,  respectively, of  the Company's  revenues. For  the
first three months of 1996 sales to the Company's largest customer accounted for
71%  of total revenues; sales to the  second largest customer were not material.
The Company has  not yet established  a broad  customer base and  does not  have
long-term  contracts  with  any  of its  customers,  including  its  two largest
customers. As production levels  increase and new  products are introduced,  the
Company  will continue its efforts to  expand its product offerings and customer
base to reduce its reliance on any one customer for a significant portion of its
gross revenues. There can  be no assurance, however,  that current order  levels
from  its largest customers  will continue or that  intense competition will not
adversely affect  the Company's  expansion  plans. See  "Business --  Sales  and
Distribution" and "Business -- Customers."
 
                                       5
<PAGE>
MARKET ACCEPTANCE AND LIMITED MARKETING CAPABILITIES
 
   
    The Company has not yet shipped significant quantities of products in any of
the markets in which it intends to compete. It has not, therefore, established a
significant market presence in any of these markets.
    
 
   
    The  commercial success  of the  Company's various  products will  depend on
their acceptance by the  end users of such  products. The Company currently  has
limited  sales and marketing capabilities, and  relies heavily on the efforts of
its senior management  and, to a  lesser extent, on  the efforts of  independent
sales  representatives. Although the Company  has arrangements with distributors
and agents in the European  and Pacific Rim markets,  there can be no  assurance
that  they will successfully  market the Company's  existing or future products.
The Company has hired a sales manager to oversee the introduction of its ZeroRay
products and  is currently  pursuing  the further  development  of a  sales  and
marketing  staff. There can  be no assurance  that this effort  will result in a
successful sales and marketing program. Failure of any of the Company's  product
categories  to achieve market acceptance could have a material adverse effect on
the Company's business,  financial condition and  results of operations.  During
1996  the Company intends to  focus its market development  efforts, in part, on
the super twisted  nematic ("STN") segment  of the ITO  coated glass market.  It
does  not  intend, however,  to abandon  its current  emphasis on  production of
twisted nematic ("TN") grade ITO coated glass unless market demand for STN grade
coated glass products warrants a reduction in  focus on the TN grade segment  of
the  market. The  Company believes,  therefore, that  its continuing  results of
operations do not  depend materially  on the  commercial acceptance  of its  STN
grade  ITO coated glass. See "Business -- Products and Markets" and "Business --
Sales and Distribution."
    
 
RAPID TECHNOLOGICAL CHANGE
 
    The technology  for manufacturing  vacuum deposited  thin film  coatings  on
various   substrates  has  been  characterized  by  rapid  change,  which  could
ultimately result  in partial  or total  obsolescence of  the Company's  present
manufacturing equipment, processes and products within time frames not presently
anticipated by the Company. As a result, the Company may be forced to respond to
these  changes by enhancing  or altering its  manufacturing equipment, processes
and  products  at  substantial  costs  in  terms  of  both  capital  expenditure
requirements  and loss of  revenue. The Company's future  success will depend on
its ability  to  keep pace  with  advancing technology.  Many  competitors  have
significantly  greater research and development  capabilities, and financial and
managerial  resources  than  the  Company  and   may  be  able  to  respond   to
technological  change  more  effectively  than  the  Company.  There  can  be no
assurance, therefore, that  the Company will  be able to  adequately respond  to
such technological change should it occur.
 
NEED FOR ADDITIONAL CAPITAL; GOING CONCERN UNCERTAINTY
 
   
    The  Company had  a working  capital deficit  of $3,216,717  at December 31,
1995, and $4,420,587 at March 31, 1996. Negative cash flows from operations were
$3,239,173 for the  year ended December  31, 1995, and  $70,768 for the  quarter
ended March 31, 1996. The Company estimates that approximately $5,250,000 of the
net  proceeds  from the  Shares offered  hereby  will be  used to  repay certain
outstanding debt, and $3,755,000  will be used for  working capital and  general
corporate  purposes. The remaining  proceeds are expected to  be used to finance
the acquisition and  construction of manufacturing  equipment and other  capital
improvements,  marketing efforts and product development. See "Use of Proceeds."
Depending on the amount, if any, of cash generated from operations, the  Company
may require additional debt or equity financing to pursue the development of new
products and markets after the proceeds of this Offering have been expended. See
"Management's  Discussion  and Analysis  of Financial  Condition and  Results of
Operations -- Liquidity and Capital Resources."  There can be no assurance  that
additional  financing will be available, or  be available on terms acceptable to
the Company.
    
 
    The Company has financed the construction of certain equipment it will  sell
to  a Chinese  joint venture,  of which it  is a  partner, through  a $2 million
transaction-specific line of credit which is secured by substantially all of the
assets  of  the   Company  and   expires  on  May   31,  1996.   This  line   of
 
                                       6
<PAGE>
credit  is repayable from the  proceeds of the sale  of the equipment, which the
Company expects to  occur prior to  the expiration  of the line  of credit.  The
Company  plans to seek an extension of the  line of credit if the equipment sale
has not been  completed prior  to May  31, 1996.  Although the  lender has  been
willing  to grant similar extensions in the past, there can be no assurance that
it will be willing to grant additional extensions.
 
    The report of the independent auditors on the Company's Financial Statements
contains an explanatory paragraph concerning  the Company's ability to  continue
as  a going  concern. See  Note 1  to the  Company's Financial  Statements for a
description of  the factors  related to  going concern  issues and  management's
plans  regarding operating losses and liquidity.  The Company believes that upon
the successful completion of this Offering,  it will have the cash resources  to
meet its current obligations.
 
COMPETITION
 
    There is substantial price competition in the market for TN grade ITO coated
glass,  which  has been  the Company's  predominant source  of revenue  to date.
Approximately half  of the  world's  TN grade  ITO glass  coating  manufacturing
capacity  is located in Japan. The Company is also aware of several non-Japanese
companies that manufacture or  plan to manufacture ITO  coated glass. There  are
several  domestic  and  foreign manufacturers  of  anti-reflection  coatings and
enhanced reflection mirror products. Some of the Company's present and potential
competitors in  the  ITO  coated glass,  anti-reflection  coating  and  enhanced
reflection  mirror  markets  have  substantially  greater  financial  resources,
business experience, and product development, marketing and support capabilities
than those of the Company.  There can be no assurance  that the Company will  be
able  to compete successfully with existing or future competitors. See "Business
- -- Competition."
 
DEPENDENCE ON INTELLECTUAL PROPERTY
 
    The Company's success depends, and will continue to depend, in part, on  its
ability  to  maintain  patent  protection for  its  manufacturing  processes, to
preserve its trade  secrets and  to operate without  infringing the  proprietary
rights  of third  parties. The  validity and  breadth of  claims covered  in the
Company's five  issued U.S.  patents and  six U.S.  patent applications  involve
complex  legal and factual questions and, therefore, may be highly uncertain. No
assurance can be given  that the Company's pending  applications will result  in
patents  being issued, or, if issued, that such patents or the Company's current
patents will provide a competitive advantage, or that competitors of the Company
will not design around any patents issued to the Company. Furthermore, there can
be no assurance  that the Company's  confidentiality and noncompete  agreements,
invention   assignments  and  other  safeguards  will  protect  its  proprietary
information and know-how  or provide adequate  remedies for the  Company in  the
event  of unauthorized use or disclosure  of such information. Litigation, which
could result in substantial costs to and diversion of effort by the Company, may
be necessary to enforce patents issued to the Company, to protect trade  secrets
or  know-how  owned  by  the  Company, to  defend  the  Company  against claimed
infringement of the  rights of others  or to determine  the ownership, scope  or
validity  of the proprietary  rights of the  Company and others.  Other than the
prior art review done in connection with the Company's patent applications,  the
Company  has not  undertaken any  independent investigation  regarding potential
infringement of  its current  or proposed  products on  the property  rights  of
others. See "Business -- Intellectual Property."
 
DEPENDENCE ON SINGLE SOURCE SUPPLIERS
 
   
    The  majority of the  products which the  Company has produced  to date have
required a glass substrate. The Company currently purchases its glass  substrate
from  Glaverbel, S.A. of Belgium. The Company does not have a long term contract
with this supplier. The Company  believes, however, that acceptable  alternative
sources  are currently available. In the event the Company must seek alternative
sources for key  raw materials, there  can be no  assurance that such  materials
will  be  available  for  purchase  from  alternative  suppliers,  or  that such
materials will be available  on terms and at  prices acceptable to the  Company.
Any  interruption  in  the  supply  of these  materials  could  have  a material
    
 
                                       7
<PAGE>
adverse effect on the Company's ability to manufacture its products until a  new
source of supply is located and, therefore, could have a material adverse effect
on its business, results of operations and financial condition. See "Business --
Manufacturing."
 
DEPENDENCE ON KEY PERSONNEL
 
    The  Company is highly dependent  on a limited number  of key management and
technical personnel,  particularly its  President and  Chief Executive  Officer,
David  E. Stevenson. The Company has  an employment agreement with Mr. Stevenson
and maintains key  man life insurance  on Mr.  Stevenson in the  amount of  $1.5
million,  which  has  been assigned  as  collateral  for the  $1.5  million loan
obtained from  a  director  of the  Company  in  1995. This  insurance  will  be
maintained  after  the  loan has  been  repaid.  Nevertheless, the  loss  of Mr.
Stevenson's services would severely limit the ability of the Company to  conduct
and expand its business. The Company's future success will also depend, in part,
on its ability to attract and retain highly qualified personnel. There can be no
assurance  that the Company will be  successful in hiring or retaining qualified
personnel. The loss of key personnel,  or inability to hire or retain  qualified
personnel,  could  have a  material adverse  effect  on the  Company's business,
results of operations and financial condition. See "Management."
 
INTERNATIONAL SALES; INTERNATIONAL JOINT VENTURE
 
    Almost all of the Company's  sales to date have  been to customers in  Asia.
The  Company expects  that international  sales will  continue to  account for a
significant  portion  of  the  Company's  business.  The  Company's  sales   are
denominated  in  U.S. dollars  and,  therefore, the  Company  is not  subject to
foreign currency  exchange risk.  This  practice is  expected to  continue.  The
Company's  international sales may, however, be adversely affected by changes in
demand resulting from fluctuations in currency exchange rates and local economic
conditions. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources."
 
    The Company is  a 40% partner  in a  joint venture located  in the  People's
Republic  of China. The amount of distributions  and earnings, if any, which the
Company may realize  from the  joint venture  are subject  to all  of the  risks
inherent  in the start up and operation of any new business. The interest of the
Company in the joint venture is also  subject to the risk of nationalization  of
the  joint  venture's assets  by  the Chinese  government.  The Company  has not
assigned a value to its interest in the joint venture on its balance sheet  and,
therefore,  nationalization  would not  have a  material  adverse impact  on the
Company's financial condition. See "Business -- China Joint Venture."
 
NO PRIOR PUBLIC MARKET; DETERMINATION OF OFFERING PRICE; POSSIBLE VOLATILITY OF
STOCK PRICE
 
    Prior to this Offering,  there has been no  public market for the  Company's
Common Stock and there can be no assurance that an active trading market for the
Common  Stock  will develop  or be  sustained after  this Offering.  The initial
public offering price for the Shares has been determined by negotiation  between
the  Company and the Representative  and may bear no  relationship to the market
price of the Shares subsequent  to this Offering. See "Underwriting."  Following
this  Offering, the  market price  for the Common  Stock may  be highly volatile
depending on  various  factors,  including the  general  economy,  stock  market
conditions,  announcements by the Company  and its competitors, and fluctuations
in the Company's operating results.
 
ABSENCE OF DIVIDENDS ON COMMON STOCK
 
    No dividends  have been  paid on  the  Common Stock.  The Company  does  not
anticipate  the payment of cash dividends on its Common Stock in the foreseeable
future. In addition, the Company is  prohibited from paying dividends under  the
provisions of a credit agreement. See "Dividend Policy."
 
DILUTION
 
   
    The  shares of Common  Stock currently outstanding  were purchased at prices
substantially below  the Price  to Public.  Therefore, at  the assumed  offering
price  of  $8.50 per  Share,  investors in  this  Offering will  incur immediate
substantial dilution of  $4.71 in the  net tangible book  value per Share  after
this Offering. See "Dilution."
    
 
                                       8
<PAGE>
SHARES ELIGIBLE FOR FUTURE SALE; OUTSTANDING WARRANTS
 
   
    Following completion of this Offering, 4,837,323 shares of Common Stock will
be  issued and outstanding, including the 2,000,000 Shares offered hereby, which
will be tradeable without restriction, and  2,837,323 shares, which may be  sold
subject  to the restrictions  of Rule 144  under the Securities  Act of 1933, as
amended (the "Securities Act"). Each of the directors and executive officers  of
the  Company has agreed  to refrain from selling  his or her  shares (a total of
451,362 shares) without the prior written consent of the Representative for  one
year  after the date of  this Prospectus. In addition,  the holders of 1,616,870
shares have agreed to a 270-day restriction  on the sale of their stock  without
the prior written consent of the Representative. In the aggregate, 72.89% of the
total  shares  outstanding prior  to this  Offering will  be subject  to selling
restrictions for a minimum of 270 days. Sales of a substantial number of  shares
of Common Stock of the Company in the public market subsequent to this Offering,
or  the  perception that  such  sales could  occur,  could adversely  affect the
prevailing market price  of the Common  Stock. See "Shares  Eligible for  Future
Sale."
    
 
    As  of December 31, 1995, the Company had outstanding warrants to purchase a
total of 913,600  shares of Common  Stock. The  holders of the  warrants may  be
expected  to exercise their  warrants at a  time when the  Company would, in all
likelihood, be able to obtain equity capital by a new offering of its securities
on terms more favorable to the Company than the terms of the warrants. This  may
have  the effect  of depriving the  Company of opportunities  to sell additional
equity securities  on favorable  terms.  See "Description  of Capital  Stock  --
Warrants."
 
EFFECT OF CERTAIN ANTITAKEOVER PROVISIONS; MINNESOTA CORPORATE LAW
CONSIDERATIONS
 
    As  a Minnesota corporation, the Company  is subject to certain antitakeover
provisions of the  Minnesota Business  Corporation Act.  These provisions  could
have  the effect  of discouraging potential  takeover attempts  and of delaying,
deferring or preventing a change in control of the Company or making removal  of
management  more  difficult.  See  "Description of  Capital  Stock  -- Minnesota
Antitakeover Law."
 
    The Company's Second Amended and Restated Articles of Incorporation may only
be amended by resolution adopted by the affirmative vote of not less than 60% of
the shares  entitled  to vote,  provided  the  amendment does  not  receive  the
negative  vote of more than  25% of the shares  entitled to vote. This provision
could have the effect of discouraging an unsolicited takeover of the Company.
 
    The Company's Second Amended and Restated Articles of Incorporation provide,
as permitted  by  Minnesota law,  that  its  directors shall  have  no  personal
monetary  liability  for  certain  breaches  of  their  fiduciary  duties.  This
provision may discourage shareholders from  bringing suit against directors  for
breach  of fiduciary duties and reduce  the likelihood of derivative litigation.
See "Management -- Indemnification and Waiver of Director Liability."
 
    Furthermore, under  Minnesota law  a board  of directors  has the  power  to
establish  classes and series of  securities and to fix  the relative rights and
preferences of  any such  class  or series.  Pursuant  to the  Company's  Second
Amended  and Restated Articles  of Incorporation, the Board  of Directors of the
Company has the authority to issue  up to 6,000,000 undesignated shares  without
further  shareholder approval.  Issuance of  undesignated shares,  if any, could
result in  a dilution  of the  voting power  of Common  Stock, adversely  affect
holders  of Common Stock in the event of liquidation of the Company, or delay or
prevent a change in control of the Company. See "Description of Capital Stock --
Undesignated Shares."
 
                                       9
<PAGE>
                                USE OF PROCEEDS
 
   
    The net proceeds to the Company from the sale of Common Stock offered hereby
at an assumed initial public offering price of $8.50 per Share are estimated  to
be  approximately $15,155,000  ($17,488,250 if  the Underwriters' over-allotment
option is  exercised in  full), after  deducting the  underwriting discount  and
estimated  offering  expenses  payable  by the  Company.  The  Company currently
intends to apply these proceeds approximately as follows:
    
 
   
<TABLE>
<S>                                                             <C>
Repayment of Bridge Notes.....................................  $ 4,000,000
Payment of interest on Bridge Notes...........................      250,000
Repayment of loan from director...............................    1,000,000
Additional equipment and capital improvements.................    4,300,000
Marketing and sales...........................................    1,350,000
Product development...........................................      500,000
Working capital and general corporate purposes................    3,755,000
                                                                -----------
    Total.....................................................  $15,155,000
                                                                -----------
                                                                -----------
</TABLE>
    
 
    REPAYMENT OF DEBT
 
    The Company plans  to use approximately  $4 million of  the net proceeds  to
repay  Bridge Notes. The Bridge Notes were issued in October 1995, bear interest
at the rate of 11.75% and are due  on the closing of this Offering. The  Company
will  pay accrued interest of approximately  $250,000 to the Bridge Note holders
at the closing  of this Offering.  In addition,  the Company will  repay a  loan
received  from a director  during 1995 in  the original amount  of $1.5 million,
which bears interest  at the prime  rate plus 3.75%.  The outstanding  principal
balance at March 31, 1996 was $1,166,667. Due to scheduled principal payments to
be made by the Company between March 31, 1996 and the date of this Offering, the
balance  of the  note to  the director is  anticipated to  be $1  million at the
effective date of this  Offering. While the  note matures on  May 10, 1997,  the
Company intends to prepay this obligation because of its high coupon rate. There
is no penalty for prepayment. See "Certain Transactions."
 
    ADDITIONAL EQUIPMENT AND CAPITAL IMPROVEMENTS
 
   
    The Company intends to use approximately $4.3 million of the net proceeds to
construct  additional manufacturing equipment, including  completion of a second
coating line and  installation of  a third  coating line,  and improve  existing
equipment   in  order  to  manufacture  additional  products  and  product  line
extensions. Such equipment  will include, but  not be limited  to, cleaning  and
material handling equipment to increase the efficiency and quality of production
lines.  A portion of this  amount will also be used  for clean room and facility
improvements intended  to increase  operational efficiencies.  See "Business  --
Manufacturing."
    
 
    MARKETING AND SALES
 
   
    The  Company plans to  use approximately $1,350,000 of  the net proceeds for
product marketing. The anticipated  expenditures will be  used for developing  a
marketing  and sales  staff, attending trade  shows and  other product promotion
activities. See "Business -- Sales and Distribution."
    
 
    PRODUCT DEVELOPMENT
 
    The Company  plans to  use approximately  $500,000 of  the net  proceeds  to
enhance  existing  products,  and  to  develop  new  products  for  existing and
developing markets. See "Business -- Research and Development."
 
    WORKING CAPITAL AND GENERAL CORPORATE PURPOSES
 
    The Company plans to use the portion of the proceeds designated for  working
capital  and general corporate  purposes to accommodate  increased inventory and
receivables and to  add approximately six  people for warehousing,  distribution
and administrative support.
 
    Pending  utilization of the net proceeds of this Offering, the Company plans
to invest such net proceeds in short term investments, including certificates of
deposit and interest bearing bank accounts.
 
                                       10
<PAGE>
                                DIVIDEND POLICY
 
    The Company has never declared or paid a cash dividend on its Common  Stock.
The  Company currently intends to  retain any earnings for  use in the operation
and expansion of its business and therefore does not anticipate paying any  cash
dividends in the foreseeable future. In addition, the Company is prohibited from
paying  dividends under  the provisions  of a  credit agreement.  See Note  4 to
Financial Statements.
 
                                    DILUTION
 
   
    The following gives effect to the  issuance of the Shares offered hereby  at
an  assumed Price to Public of $8.50 per  Share, but does not give effect to any
exercise of  outstanding  options  or  warrants  to  purchase  an  aggregate  of
1,039,850  shares of  Common Stock  at an  average exercise  price of  $4.46 per
share. The net tangible book  value of the Company's  Common Stock at March  31,
1996 was $3,043,399 or $1.07 per share. "Net tangible book value" represents the
tangible  assets less total  liabilities of the Company,  and "net tangible book
value per share" was determined by dividing  the net tangible book value of  the
Company  by the number of shares of  Common Stock outstanding on March 31, 1996.
The number of shares of  Common Stock outstanding at  March 31, 1996 reflects  a
1-for-2  reverse split of Common Stock  to become effective immediately prior to
the effectiveness of  this Offering.  See "Capitalization."  "Net tangible  book
value  dilution per Share" represents the difference between the Price to Public
per Share and the net tangible book value per share after this Offering. Without
taking into account  any changes in  the Company's net  tangible book value  per
share  after March 31, 1996, other than to give effect to the sale of the Shares
offered hereby (net of underwriting commissions, estimated offering expenses  of
$400,000  and the  write-off of deferred  financing costs of  $131,990), the net
tangible book value of the Company at March 31, 1996 would have been $18,309,910
or $3.79 per share. This represents  an immediate increase in net tangible  book
value  to the existing shareholders of $2.72 per share and an immediate dilution
to purchasers of the Shares of $4.71 per Share, as illustrated by the  following
table:
    
 
   
<TABLE>
<S>                                                                  <C>        <C>
Assumed Price to Public per Share..................................             $    8.50
  Net tangible book value per share at
   March 31, 1996..................................................  $    1.07
  Increase per share attributable to Offering......................       2.72
                                                                     ---------
Net tangible book value per share after Offering...................                  3.79
                                                                                ---------
Net tangible book value dilution per Share to new investors........             $    4.71
                                                                                ---------
                                                                                ---------
</TABLE>
    
 
    The following table summarizes, on a pro forma basis, the difference between
the  number of  shares of  Common Stock purchased  from the  Company by existing
shareholders and by new investors in this Offering, the total consideration paid
to the Company and the average price  paid per share. The table assumes that  no
Shares  are purchased in  this Offering by existing  shareholders. To the extent
existing shareholders  purchase in  this Offering,  their percentage  ownership,
total  consideration and average consideration per share will be greater than is
shown.
 
   
<TABLE>
<CAPTION>
                                                     SHARES PURCHASED          TOTAL CONSIDERATION          AVERAGE
                                                 ------------------------  ---------------------------   CONSIDERATION
                                                   NUMBER       PERCENT        AMOUNT        PERCENT       PER SHARE
                                                 -----------  -----------  --------------  -----------  ---------------
<S>                                              <C>          <C>          <C>             <C>          <C>
Existing shareholders..........................    2,837,323        58.6%  $    7,572,095        30.8%     $    2.67
New investors..................................    2,000,000        41.4%  $   17,000,000        69.2%     $    8.50
                                                 -----------       -----   --------------       -----
    Total......................................    4,837,323       100.0%  $   24,572,095       100.0%
                                                 -----------       -----   --------------       -----
                                                 -----------       -----   --------------       -----
</TABLE>
    
 
                                       11
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the capitalization of the Company as of March
31, 1996  and as  adjusted to  reflect the  sale by  the Company  of the  Shares
offered  hereby  at  an assumed  Price  to Public  of  $8.50 per  Share  and the
application of the net proceeds therefrom. See "Use of Proceeds."
 
   
<TABLE>
<CAPTION>
                                                                                            MARCH 31, 1996
                                                                                    ------------------------------
                                                                                      ACTUAL (1)     AS ADJUSTED
                                                                                    --------------  --------------
<S>                                                                                 <C>             <C>
Short-term debt:
  Bridge Notes....................................................................  $    4,000,000  $            0
  Loan from director, current.....................................................       1,000,000               0
  Lines of credit.................................................................       2,191,480       2,191,480
  Current maturities of long-term obligations.....................................         290,864         290,864
                                                                                    --------------  --------------
    Total short-term debt.........................................................  $    7,482,344  $    2,482,344
                                                                                    --------------  --------------
                                                                                    --------------  --------------
Long-term debt, less current portion..............................................  $      290,318  $      290,318
Shareholders' equity:
  Common Stock, no par value, 24,000,000 shares authorized; 2,837,323 shares
   issued and outstanding; 4,837,323 shares issued and outstanding, as
   adjusted (1)(2)................................................................       6,671,217      21,826,217
  Accumulated deficit (3).........................................................      (3,357,832)     (3,489,822)
                                                                                    --------------  --------------
    Total shareholders' equity....................................................       3,313,385      18,336,395
                                                                                    --------------  --------------
      Total capitalization........................................................  $    3,603,703  $   18,626,713
                                                                                    --------------  --------------
                                                                                    --------------  --------------
</TABLE>
    
 
- ------------------------
 
(1) After giving effect  to a  1-for-2 reverse stock  split which  is to  become
    effective immediately prior to the effectiveness of this Offering.
 
   
(2) Does not include: (i) 20,000 shares reserved for issuance at $2.00 per share
    upon  the exercise of outstanding warrants which expire in August 1997; (ii)
    49,250 shares reserved for issuance at $2.00 per share upon the exercise  of
    outstanding  warrants which  expire in  November 1997;  (iii) 145,109 shares
    reserved for issuance at  $2.00 per share upon  the exercise of  outstanding
    warrants  which  expire  in  March 1998;  (iv)  90,000  shares  reserved for
    issuance at $2.00 per share upon the exercise of outstanding warrants  which
    expire  in September 1998; (v) 23,444  shares reserved for issuance at $4.00
    per share upon the exercise of outstanding warrants which expire in November
    1998; (vi) 44,519 shares reserved for  issuance at $4.00 per share upon  the
    exercise of outstanding warrants which expire in December 1998; (vii) 23,028
    shares  reserved  for  issuance at  $4.00  per  share upon  the  exercise of
    outstanding warrants  which  expire in  January  1999; (viii)  3,250  shares
    reserved  for issuance at  $4.00 per share upon  the exercise of outstanding
    warrants which expire  in February  1999; (ix) 400,000  shares reserved  for
    issuance  at 75%  of the  Price to Public  upon the  exercise of outstanding
    warrants which  expire  in October  2000;  (x) 40,000  shares  reserved  for
    issuance at the Price to Public upon the exercise of outstanding warrants to
    the Representative which expire in October 2000; (xi) 75,000 shares reserved
    for  issuance at $4.00  per share upon the  exercise of outstanding warrants
    which expire in May 2003 (xii) 625,000 shares reserved for issuance upon the
    exercise of options issued and to  be issued under the Company's 1992  Stock
    Option  Plan; (xiii) 50,000 shares reserved  for issuance at $4.00 per share
    upon the exercise of options granted  to outside directors, of which  30,000
    are  currently exercisable; (xiv) 160,000  shares reserved for issuance upon
    the exercise of warrants  to be issued to  the Representative in  connection
    with  this  Offering; or  (xv)  the option  granted  to the  Underwriters to
    purchase an additional 300,000 shares to cover over-allotments, if any.  See
    "Management  -- Executive Compensation,"  "Certain Transactions," "Principal
    Shareholders" and "Underwriting."
    
 
(3) As adjusted, reflects the write-off of deferred financing costs of  $131,990
    incurred in connection with the issuance of the Bridge Notes.
 
                                       12
<PAGE>
                            SELECTED FINANCIAL DATA
 
    The  statement of operations data for the  years ended December 31, 1994 and
1995 and the balance sheet data at  December 31, 1994 and 1995 are derived  from
and  are qualified by reference  to, and should be  read in conjunction with the
more detailed audited Financial Statements of the Company and the Notes  thereto
included  elsewhere  in  this  Prospectus.  The  auditors'  report  contains  an
explanatory paragraph referring to substantial doubt as to the Company's ability
to continue as a going concern. The  information set forth below should be  read
in  conjunction with the section  entitled "Management's Discussion and Analysis
of Financial Condition and Results  of Operations," which follows this  section.
The  statement of operations data for the  three months ended March 31, 1995 and
1996, and  the  balance sheet  data  at March  31,  1996 are  derived  from  the
unaudited  financial  statements  of  the  Company  included  elsewhere  in this
Prospectus, which  statements  reflect, in  the  opinion of  management  of  the
Company,  all adjustments,  consisting solely  of normal  recurring adjustments,
necessary for  a fair  statement of  the financial  data for  such periods.  The
results  of  operations  for the  three  months  ended March  31,  1996  are not
necessarily indicative of the results which may be expected for the entire  year
ending December 31, 1996, or for any other interim period.
 
<TABLE>
<CAPTION>
                                                                                        THREE MONTHS ENDED MARCH
                                                          YEARS ENDED DECEMBER 31,                31,
                                                        -----------------------------  --------------------------
                                                             1994           1995          1995          1996
                                                        --------------  -------------  -----------  -------------
<S>                                                     <C>             <C>            <C>          <C>
STATEMENT OF OPERATIONS DATA:
  Revenues............................................  $      914,736  $   3,362,818   $  217,595  $   1,137,950
  Cost of sales.......................................       1,016,628      2,048,522       96,933        676,782
                                                        --------------  -------------  -----------  -------------
    Gross profit (loss)...............................        (101,892)     1,314,296      120,662        461,168
                                                        --------------  -------------  -----------  -------------
  Operating expenses:
    Process and product development...................         647,639        353,636       72,451         84,657
    General and administrative........................         418,938        462,686       97,893        164,479
    Selling and marketing.............................         174,326        161,531       28,026         72,165
                                                        --------------  -------------  -----------  -------------
      Total operating expenses........................       1,240,903        977,853      198,370        321,301
                                                        --------------  -------------  -----------  -------------
  Operating income (loss).............................      (1,342,795)       336,443      (77,708)       139,867
  Interest expense, net...............................         (62,240)      (286,430)     (17,323)       (60,838)
                                                        --------------  -------------  -----------  -------------
  Net income (loss)...................................  $   (1,405,035) $      50,013   $  (95,031) $      79,029
                                                        --------------  -------------  -----------  -------------
                                                        --------------  -------------  -----------  -------------
  Net income (loss) per common and common equivalent
   share (1)(2).......................................  $         (.47) $         .02   $     (.03) $         .02
                                                        --------------  -------------  -----------  -------------
                                                        --------------  -------------  -----------  -------------
  Weighted average common and common equivalent shares
   outstanding (1)(2).................................       3,015,640      3,334,114    3,334,114      3,334,114
</TABLE>
 
<TABLE>
<CAPTION>
                                                                            DECEMBER 31,
                                                                   ------------------------------
                                                                        1994            1995       MARCH 31, 1996
                                                                   --------------  --------------  --------------
<S>                                                                <C>             <C>             <C>
BALANCE SHEET DATA:
  Current assets.................................................  $    1,307,508  $    6,978,799  $    6,413,633
  Current liabilities............................................       2,447,494      10,195,516      10,834,220
  Working capital (deficit)......................................      (1,139,986)     (3,216,717)     (4,420,587)
  Total assets...................................................       6,149,863      14,192,655      14,437,923
  Long-term debt.................................................         528,076         762,783         290,318
  Accumulated deficit............................................      (3,486,874)     (3,436,861)     (3,357,832)
  Shareholders' equity...........................................       3,174,293       3,234,356       3,313,385
</TABLE>
 
- ------------------------
(1) Reflects  a 1-for-2 reverse stock split  of Common Stock to become effective
    immediately prior to the effectiveness of this Offering.
 
(2) See Note 2  to Financial  Statements for determination  of weighted  average
    common and common equivalent shares outstanding.
 
                                       13
<PAGE>
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
GENERAL
 
   
    The  Company  has developed  a  proprietary technology  for  applying vacuum
deposited thin film coatings onto substrates  such as glass, plastic and  metal.
These  thin film  coatings consist of  microscopically thin layers  of metal and
metal  oxide  materials  which  alter  the  optical,  electrical  or  durability
properties  of the substrate material.  The Company's technology has application
to many  products, including  transparent  electrically conductive  metal  oxide
coatings  used in  liquid crystal,  electroluminescent and  gas plasma displays;
glare reducing and radiation blocking filters for use with computer monitors and
television screens; low  reflection and fade  protection picture framing  glass;
low  reflection and ultraviolet light blocking coatings for eyeglass lenses; and
ultra-high reflectivity mirrors for use in photocopiers, facsimile machines  and
bar  code scanners. The Company's proprietary  process is known as FUZION planar
magnetron sputtering. Management  believes this  process is  more efficient  and
less  costly than the more widely used chemical vapor deposition and evaporation
type coating processes  for applying  thin film coatings.  The Company's  FUZION
process  is  capable  of producing  "ultra-high"  grade thin  film  coatings, as
defined in U.S. government standards. Most  high quality thin film coatings  are
applied  in a low volume batch type  process. The FUZION process is a continuous
"in-line" production  system which  permits  the Company  to coat  larger  sized
substrates  while achieving a higher level of productivity and quality than that
of competing technologies of which the Company is aware. Based on its  knowledge
of  the technologies  employed by its  competition, the Company  believes it can
produce thin film  coatings at production  rates that are  several times  faster
than the rates achievable by competing technologies.
    
   
    From  incorporation in May 1991 to June 1995, the Company's primary business
consisted of  developing  process  and  product  technology,  modifying  coating
equipment  acquired by the  Company to utilize  the FUZION technology, designing
and building  additional  equipment  to  maximize  production  efficiencies  and
product  development.  During the  second half  of 1993  through June  1994, the
Company engaged in limited production of TN grade ITO coated glass.
    
 
   
    In July  1994, management  decided that  it was  necessary to  redesign  and
rebuild  its first FUZION coating line (which the Company refers to as "P-1") to
achieve  higher  productivity,  reduce   lost  production  due  to   unscheduled
maintenance, improve product quality and expand product capability. As a result,
the Company suspended production operations and undertook a complete rebuild and
upgrade of its P-1 FUZION coating line.
    
 
   
    Manufacturing  operations were restarted in  July 1995. During the remainder
of 1995 the  Company scaled  up its  production operations  while continuing  to
upgrade  the capacity and capability of the  P-1 line. Beginning in January 1996
the Company commenced further upgrades of  its P-1 line and facilities in  order
to  make them  suitable for  production of  higher margin  super-twisted nematic
("STN") grade ITO coated glass,  anti-reflection and enhanced reflection  mirror
products.  Due  to limited  production and  extensive redesign  of manufacturing
equipment and facilities  in 1994  and 1995 operating  results of  1995 are  not
comparable  to 1994, and results for fiscal  1994 and 1995 are not indicative of
the results to be expected in future periods.
    
 
    In August 1994,  the Company  entered into a  joint venture  with a  Chinese
company  for the production of TN grade ITO coated glass in Shenzhen, China. The
Company will sell to the joint  venture a coating system and technology  limited
to  the production of  TN grade ITO coated  glass. Under the  terms of the joint
venture agreement, the Company will be  paid a net purchase price of  $5,487,000
in  cash for the  equipment and will also  receive a 40%  equity interest in the
joint venture. The joint venture is  expected to commence operations by the  end
of  1996. The Company is  not required to provide  future capital support to the
joint venture; however, it has guaranteed $400,000 of the purchase price of  the
joint  venture's  building.  Management is  not  currently able  to  predict the
 
                                       14
<PAGE>
amount of future  distributions or earnings,  if any, the  Company will  receive
from the joint venture. The Company is not relying on any material distributions
or  earnings from the joint venture in  the foreseeable future. See "Business --
China Joint Venture."
 
    The Company is not contractually obligated  to shift production of TN  grade
ITO  coated glass  products to the  joint venture. Management  expects that U.S.
production of  TN grade  ITO coated  glass for  use in  Asia will  gradually  be
shifted  to Asia over the next several years. As a result of this expected shift
management intends to devote an increasing  level of its efforts to serving  the
STN  grade  ITO coated  glass,  anti-reflection and  enhanced  reflection mirror
product needs of its existing and  future customers. There can be no  assurance,
however, that the Company will be successful in these efforts.
 
    The  Company's  Financial Statements  have been  prepared assuming  that the
Company will continue as a going concern. The report of the independent auditors
on  the  Company's  Financial  Statements  contains  an  explanatory   paragraph
concerning  the Company's ability to continue as  a going concern. See Note 1 to
the Company's Financial Statements for a  description of the factors related  to
going  concern  issues and  management's  plans regarding  operating  losses and
liquidity. Management  believes  that upon  the  successful completion  of  this
Offering,  the  Company  will  have  the  cash  resources  to  meet  its current
obligations.
 
    Except  for  the  historical  information  contained  herein,  the   matters
discussed  in this Prospectus are forward looking statements which involve risks
and  uncertainties,  including  but  not  limited  to,  economic,   competitive,
governmental  and  technological  factors  affecting  the  Company's operations,
markets, products, services and prices, and other factors discussed herein.
 
RESULTS OF OPERATIONS
 
    FOR THE YEAR ENDED DECEMBER 31, 1995 COMPARED TO THE YEAR ENDED DECEMBER 31,
1994
 
    REVENUES.  Revenues for  the year ended December  31, 1995, were  $3,362,818
compared  to $914,736 for 1994, an increase of 268%. The revenue from both years
was  generated  almost  entirely  by  sales  of  TN  grade  ITO  coated   glass.
Substantially  all of the  increase in 1995 was  attributable to increased sales
volume. Management  suspended production  operations in  July 1994  in order  to
redesign the Company's equipment and facility to improve production efficiencies
and  capabilities, and to allow  the Company to produce  higher margin STN grade
ITO coated  glass,  anti-reflection  and enhanced  reflection  mirror  products.
Therefore,  there were  no significant  sales in  the second  half of  1994. The
Company resumed production of  TN grade ITO  coated glass in  July 1995 to  take
advantage  of  the increased  market  demand for  this  product and  to generate
revenues to fund continuing improvements to production equipment and facilities.
Production during 1995 was  limited to allow  for the simultaneous  modification
and upgrades to the equipment. These improvements, which will enable the Company
to  produce  both  TN  and  STN  grades of  ITO  coated  glass  on  its existing
manufacturing line, will be substantially completed  in the first half of  1996,
and, therefore, management expects growth in revenue from the sale of TN and STN
grade  ITO coated glass. Due to limited production in 1995, sales were made to a
small number of customers who purchased all of the Company's production  output;
additional  sales and customers  were not pursued during  this period because of
limited production capacity.
 
    During 1995 sales of ITO coated glass to the Company's two largest customers
accounted for 57% and  28% of total revenue,  respectively. During 1994, one  of
these  customers  accounted  for  26%  of total  revenue  and  a  third customer
accounted for 32% of total revenue.
 
   
    The Company  has begun  installing a  second production  line that  will  be
dedicated  to the production  of anti-reflection and  enhanced reflection mirror
products. This line  is scheduled  to be operational  in the  second quarter  of
1996.   The  amount  of  revenue  which  will  be  realized  from  the  sale  of
anti-reflection and enhanced reflection mirror products is difficult to  predict
as  the Company has  not begun selling commercial  quantities of these products,
and because unforeseen production  problems may delay  the Company's ability  to
manufacture these products.
    
 
                                       15
<PAGE>
    GROSS  PROFIT (LOSS).   Gross  profit was $1,314,296  in 1995  compared to a
gross loss of $101,892 in 1994. The  increase in gross profit was due  primarily
to  the  revenue  increases discussed  above.  In  addition, gross  profit  as a
percentage of sales increased to  39%, compared to a  gross loss in 1994.  Costs
and  margins for TN grade  ITO coated glass are  heavily influenced by substrate
costs and production  cycle time. To  date, the Company's  substrate costs  have
been  related predominantly  to a special  grade of  glass used in  TN grade ITO
coated glass. The price of this substrate material is expected to remain  stable
for  the  foreseeable future  due to  newly  added industry  capacity. Equipment
improvements to be completed in 1996  are expected to significantly improve  the
Company's  production  cycle time  and capacity.  Management believes  that this
change,  coupled  with  the  introduction  of  anti-reflection  products   which
incorporate  lower cost  substrates, and the  introduction of  higher margin STN
grade ITO coated glass products, should provide for continued improvement in the
Company's gross profit.
 
    RESEARCH AND DEVELOPMENT.   Research and  development expenses decreased  to
$353,636 in 1995 from $445,480 in 1994. Research and development expenses do not
include  equipment design  and engineering costs.  The decrease  in research and
development expenses was due primarily to the transfer of certain personnel from
research and development to operations during 1995. The Company's research staff
consists of  four  Ph.D.  research  scientists in  the  fields  of  physics  and
inorganic  chemistry. The Company is committed to continuing research to advance
its technology and develop new products and uses for its technology and  expects
that  future  research and  development  expenses, on  a  dollar basis,  will be
comparable to 1995 levels.
 
    GENERAL AND ADMINISTRATIVE  EXPENSES.  General  and administrative  expenses
increased  to $462,686  in 1995  from $418,938  in 1994.  This increase  was due
primarily to  the  addition  of personnel  associated  with  the  administrative
requirements  of managing the Company's expanded  operations. As a percentage of
revenue, general and administrative expenses decreased  to 14% in 1995 from  46%
in  1994 as revenues  increased. The Company  expects general and administrative
expenses to increase in 1996, but expects that these expenses will decrease as a
percentage of revenue.
 
    SELLING AND MARKETING  EXPENSES.  Selling  and marketing expenses  decreased
slightly  to $161,531 in 1995 from $174,326 in 1994. The 1994 expenses consisted
primarily of commissions, consulting fees and travel related to the sales of the
Company's ITO  coated glass  products  and establishment  of the  Chinese  joint
venture. Commission expense in 1995 was negligible because most of the Company's
sales  were direct. Selling  expenses in 1995 consisted  primarily of trade show
related expenses and other promotional costs incurred to introduce the Company's
products. The Company  is planning  to add  selling and  marketing personnel  in
1996,  and  to  increase  selling  and  marketing  expenditures  to  promote its
products. As sales  increase in  future periods, selling  agent commissions  are
expected to increase.
 
    NET  INTEREST EXPENSE.  The Company had  net interest expense of $286,430 in
1995 versus net interest expense  of $62,240 in 1994.  The increase in 1995  was
attributable  to a $1.5 million  loan, obtained from a  director of the Company,
which bears interest at the prime rate plus 3.75%; a $500,000 Export Import Bank
of the  United States  ("EXIM") guaranteed  export line  of credit  which  bears
interest  at the prime  rate plus 1%;  and $4 million  of bridge financing which
bears interest  at 11.75%  per  annum. The  Company  has also  financed  certain
capital  asset acquisitions through capital lease obligations and has expensed a
portion of these lease  payments as interest expense.  In 1994 interest  expense
related  primarily to an  SBA loan that  was retired in  1995, and capital lease
obligations. The Company intends to retire the majority of its outstanding  debt
with  a portion of  the net proceeds  of this Offering;  net interest expense in
1996, therefore, is expected to be less than in 1995.
 
    NET INCOME  (LOSS).   The Company  reported net  income of  $50,013 in  1995
compared  to  a net  loss of  $1,405,035 in  1994. This  improvement was  due to
increased revenue from sales of ITO coated glass.
 
    FOR THE THREE MONTHS ENDED MARCH 31, 1996 COMPARED TO THREE MONTHS ENDED
MARCH 31, 1995
 
    REVENUES.   Revenues for  the first  three months  of 1996  were  $1,137,950
compared  to $217,595 for the  first three months of  1995, an increase of 423%.
The increase in revenues between periods was due primarily to the the suspension
of  production   operations   in   1994.   In  the   first   three   months   of
 
                                       16
<PAGE>
1995,  sales consisted  of ITO  coated glass the  Company had  held in inventory
prior to the  suspension of  production operations.  Production operations  were
resumed in July 1995 on a limited basis to allow for the simultaneous production
of  TN  grade ITO  coated  glass and  the  continuing upgrade  of  equipment and
facilities.
 
    These limited operations continued through  the first three months of  1996.
During  the first three months of 1996, the Company commenced sample runs of its
STN grade  ITO  coated  glass,  enhanced reflection  mirrors  and  other  coated
products for prospective customers. These sample runs did not result in revenues
for  the Company. Several customers have  completed their tests on these samples
and have placed orders for  these products. Management expects continued  growth
in  revenues  in 1996  from the  sale of  TN  grade ITO  coated glass  and added
revenues from the sale of STN grade ITO coated glass and other coated products.
 
    GROSS PROFIT (LOSS).  The  gross profit for the  first three months of  1996
was $461,168 compared to $120,662 in the first three months of 1995, an increase
of 282%. The increase in gross profit was due primarily to the revenue increases
discussed  above. Gross  profit as a  percentage of revenues  decreased from the
first three months of 1995 compared to the first three months of 1996. Sales  in
the  first three months of 1995 were of  coated glass that had been devalued due
to uncertainty regarding its salability. In the first three months of 1996 gross
profit was positively  impacted by  improvements in the  utilization of  coating
source  target material used to produce  ITO coated glass products. This benefit
was partially offset by  the costs associated with  commencement of sample  runs
for  which the Company received no  revenues. Management believes that equipment
improvements to be completed in 1996 will significantly improve production cycle
times, thereby  decreasing  production costs  and  improving gross  profits.  In
addition, the introduction of higher margin STN grade ITO coated glass products,
enhanced  reflection mirrors,  and anti-reflection  products should  provide for
improvement in the Company's gross profit.
 
    RESEARCH AND DEVELOPMENT.  Research  and development expenses for the  first
three months of 1996 were $84,657 compared to $72,451 for the first three months
of  1995, an increase of 17%. The increase is due primarily to the addition of a
Ph.D. level research scientist during the third quarter of 1995. The Company  is
continuing  research  efforts  to  advance its  technology  and  to  develop new
products. Management  expects that  research and  development expenses  for  the
remaining quarters of 1996 will be comparable to the first three months of 1996.
 
    GENERAL  AND ADMINISTRATIVE  EXPENSES.  General  and administrative expenses
for the first three months  of 1996 were $164,479  compared to $97,893 in  1995.
This increase was due primarily to the addition of personnel associated with the
administrative  requirements of managing the Company's expanded operations. This
represents a decrease,  as a percentage  of sales, from  45% in 1995  to 14%  in
1996.  The Company  expects general and  administrative expenses  to increase in
1996 as operations  expand; however  as a  percentage of  revenues, general  and
administrative expenses are expected to decrease.
 
    SELLING  AND MARKETING  EXPENSES.   Selling and  marketing expenses  for the
first three months of 1996 were $72,165 compared to $28,026 for the first  three
months  of  1995.  The  increase  was  due  to  trade  show  expenses  and other
promotional costs  incurred  to  introduce  the  Company's  new  products.  This
represents a decrease, as a percentage of sales, from 13% in 1995 to 6% in 1996.
The  Company is planning  to add sales  and marketing personnel  and to increase
promotional expenditures as it introduces new products. In addition,  commission
expenses are expected to increase as sales increase.
 
    NET  INTEREST EXPENSE.  Net  interest expense for the  first three months of
1996 was $60,838 compared  to $17,323 for  the first three  months of 1995.  The
increase  is attributable to the addition of credit facilities which were not in
place during the first three months of 1995.
 
    NET INCOME (LOSS).  The Company reported net income of $79,029 for the first
three months of  1996 compared  to a  net loss of  $95,031 for  the first  three
months of 1995. This improvement was due to the increased revenue from the sales
of TN grade ITO coated glass.
 
                                       17
<PAGE>
NET OPERATING LOSS CARRYFORWARDS
 
   
    In  accordance with  Section 382  of the Internal  Revenue Code  of 1986, as
amended (the "Code"), a change in ownership  of greater than 50% of the  Company
within  a three  year period  results in an  annual limitation  on the Company's
ability to utilize its  net operating loss  ("NOL") carryforwards which  accrued
during  the tax  periods prior to  the change  in ownership. As  of December 31,
1995, the Company  had an  NOL carryforward  of approximately  $4 million  which
expires  in 2006 through  2009. Due to certain  ownership changes which occurred
during the  year ended  December 31,  1993, the  NOL carryforwards  of  $700,000
incurred  through February  1993, which  can be  utilized by  the Company  on an
annual basis, are limited to approximately $50,000. The annual limitation may be
increased for any built-in gains recognized within five years of the date of the
ownership  change.  Utilization  of  the  approximately  $3.3  million  of   NOL
carryforwards  incurred  after  February  1993 is  not  currently  limited under
Section 382 of the Code and  is not expected to be  limited as a result of  this
Offering.  However, the  Company's ability to  use its NOL  carryforwards may be
further limited by subsequent issuances of common stock.
    
 
LIQUIDITY AND CAPITAL RESOURCES
 
    LIQUIDITY AND  OPERATING  ACTIVITIES.   The  Company  had  negative  working
capital  of $3,216,717 at  December 31, 1995  and $4,420,587 at  March 31, 1996,
both of which included Bridge Notes of $4 million and a loan from a director  of
$1,416,667  ($1,166,667 at  March 31, 1996)  which the Company  intends to repay
from the net proceeds of this Offering.
 
    The  Company  increased  its  investment  in  inventory  from  $352,380   to
$1,420,048,  and its accounts receivable from $171,740 to $808,549 from December
31, 1994 to December 31, 1995 due  to the increase in sales and production  from
1994  to  1995. Accounts  receivable decreased  to $648,446  at March  31, 1996.
Inventory decreased from $1,420,048 at December 31, 1995 to $1,218,895 at  March
31,  1996 as a result of the Company  allowing inventory which had been built up
in late  1995  to  decrease  to  a level  more  appropiate  for  its  production
requirements.  Management anticipates the Company's  investment in inventory and
accounts receivable will increase during 1996 as production and sales  increase.
Substantially  all sales to  date were to customers  located in Asian countries.
The Company's  sales are  denominated  in U.S.  dollars. The  Company  currently
requires  letters of  credit to support  substantially all  sales. The Company's
investment in accounts receivable may increase as the Company expects to  extend
standard  U.S. credit terms  to domestic customers.  The Company's investment in
accounts receivable and inventory decreased during 1994 due to the suspension of
production in that year.
 
   
    During 1995 and the  first three months  of 1996, the  Company used cash  of
$2,607,031  and $989,782, respectively, to fund work  in process for the sale of
equipment to the Chinese joint venture. Cash provided by operating activities in
1994 included the  receipt of a  down payment of  $1,535,000 from the  Company's
Chinese  joint  venture partner.  Management anticipates  that the  Company will
complete its sale  of equipment to  the joint venture  during 1996. The  Company
will  receive approximately $3,300,000  upon shipment of  the coating system and
$600,000 during  the  latter half  of  1996 if  the  equipment meets  all  final
acceptance  tests  at  the  joint  venture  site.  The  related  line  of credit
borrowings, which are due May 31, 1996, will be repaid from these proceeds.  The
Company  has guaranteed $400,000 of  the purchase price of  a building which the
joint venture  is  obligated  to pay  in  the  second and  third  years  of  its
operation.
    
 
    INVESTING  ACTIVITIES.  The  Company used cash  of $1,983,422 and $2,474,835
for property  and  equipment  additions  in 1994  and  1995,  respectively.  The
internal  costs associated with the construction or improvement of manufacturing
lines which  have  been  capitalized  in  1994  and  1995  were  $1,039,407  and
$1,007,793,  respectively. The  costs capitalized consisted  primarily of direct
labor and supplies used in construction.  The Company used cash of $697,201  and
$877,916  for property and equipment additions  during the first three months of
1995 and 1996, respectively. The internal costs associated with the construction
or improvement  of  manufacturing  equipment  and  facilities  which  have  been
capitalized  in  the first  three  months of  1995  and 1996  were  $438,930 and
$161,000,
 
                                       18
<PAGE>
respectively.  The  Company  anticipates  that  capital  expenditures  for   the
remainder  of 1996  will be  approximately $3.2 million,  which will  be used to
purchase and  install additional  manufacturing  equipment. These  1996  capital
expenditures will be funded entirely from the net proceeds of this Offering. The
Company  is  not obligated  to, nor  does  it expect  to, provide  any financial
resources to its Chinese joint venture  for the manufacture, sales or  marketing
of TN grade ITO coated glass in 1996 or future periods.
 
    FINANCING  ACTIVITIES.   The  initial funding  of  the Company  was obtained
through the sale of Common Stock which  resulted in net proceeds to the  Company
of  $875,070. In early 1993, the Company  sold additional shares of Common Stock
which resulted in net proceeds to the Company of $2,507,392. These proceeds were
used to  finance the  acquisition of  fixed  assets and  to fund  the  Company's
research  and development efforts. In late 1993 and early 1994, the Company sold
additional shares of Common Stock which resulted in net proceeds to the  Company
of  $3,233,705.  These proceeds  were used  to  finance equipment  additions and
improvements, fund  continuing research  and development,  pilot production  and
working capital.
 
    During  1995, the Company secured a $1.5 million loan from a director of the
Company. The  note is  subject to  periodic payments  of principal  and  accrued
interest  at 3.75% over prime, and is payable in full by May 10, 1997. This loan
is secured  by substantially  all  equipment and  intellectual property  of  the
Company. The Company intends to retire the outstanding balance of this debt with
a portion of the net proceeds of this Offering.
 
    In  May 1995, the Company obtained a $2 million transaction-specific line of
credit through its bank, guaranteed by the EXIM. This note bears interest at  1%
over  prime and is secured by equipment held  for sale and all current assets of
the Company. The loan agreement  prohibits the payment of dividends,  repurchase
of  Common Stock, and requires the  lender's written consent to incur additional
debt. The loan agreement also requires the Company to maintain profitability for
each quarterly accounting period  commencing July 1,  1995, maintain a  tangible
net worth (as defined in the agreement) of $2.8 million, and maintain a ratio of
total  nonsubordinated liabilities to tangible  net worth of 2.1:1. Subordinated
debt of $4 million is added to total shareholders' equity to calculate  tangible
net  worth for purposes of the loan agreement. As of December 31, 1995 and March
31, 1996, the Company was  in compliance with all  terms of the loan  agreement.
The balance outstanding at December 31, 1995 was $1,916,480 ($1,966,480 at March
31,  1996). This note matures on May 31,  1996. The note will be repaid from the
proceeds of the equipment sale to the Chinese joint venture. If the sale of  the
equipment  is not completed prior to the  maturity date of the note, the Company
intends to seek extension of the maturity.
 
    In September 1995,  the EXIM guarantee  was extended to  a $500,000  working
capital  line of credit which is available  to finance products for export. This
note  is  subject  to   the  same  terms,  conditions,   and  security  as   the
transaction-specific note and will expire on May 31, 1996. The Company currently
plans  to seek renewal of this line of credit with similar terms and conditions.
There can  be no  assurance, however,  that the  Company will  be successful  in
obtaining  such renewal. Upon completion of  this Offering, the Company does not
believe there would be a material  adverse impact on its financial condition  or
results of operations as a result of a nonrenewal of this line of credit.
 
    In  October 1995, the Company issued $4  million of Bridge Notes. The Bridge
Notes bear interest  at 11.75% per  annum, with interest  and principal due  the
earlier  of October 15, 1996  or the closing of  this Offering. The Bridge Notes
are secured  by  substantially all  of  the  Company's assets,  subject  to  the
security  interests of the  director who made  the loan described  above and the
Company's bank lender.
 
    Management expects the net proceeds of this Offering (after repayment of the
Bridge Notes and the loan from  a director) together with anticipated  operating
revenues   will  be  sufficient  to  fund  the  Company's  capital  expenditure,
marketing, product development and working capital requirements for at least  24
months.  In  the event  this  Offering is  not  completed, the  Company  will be
required to seek other sources of debt  or equity financing to meet its  capital
requirements. There can be no
 
                                       19
<PAGE>
assurance  that additional financing will be  available or be available on terms
acceptable to  the Company.  Management expects  that, in  the future,  cash  in
excess  of current  requirements will be  invested in  investment grade interest
bearing securities.
 
    Inflation is not expected to have a material impact on the Company's results
of operations.
 
    In October 1995, the Financial  Accounting Standards Board issued  Statement
of   Financial  Accounting   Standards  No.  123,   ACCOUNTING  FOR  STOCK-BASED
COMPENSATION (SFAS 123). SFAS 123  requires expanded disclosures of  stock-based
compensation  arrangements with employees and  encourages (but does not require)
application of  the  fair value  recognition  provisions  of SFAS  123  to  such
arrangements.  SFAS 123 is required to be  adopted for reporting purposes by the
Company in fiscal 1996.  The Company is currently  evaluating whether or not  it
will  change to the recognition provisions of SFAS 123 and has not yet performed
the required calculations. The fair value recognition and measurement provisions
of SFAS 123 for  stock-based arrangements with nonemployees  is not expected  to
have a significant impact on the Company as such transactions were accounted for
on the fair value basis during fiscal 1995 and 1994.
 
                                       20
<PAGE>
                                    BUSINESS
 
GENERAL
 
    Photran  Corporation ("Photran" or the "Company") develops, manufactures and
markets innovative  high performance  optical and  electrically conductive  thin
film  coated products. The  Company has developed  a unique, proprietary process
technology known as FUZION planar magnetron sputtering. This process is used  to
apply  microscopically  thin  layers  of metal,  metal  oxide,  nitride, boride,
carbide, floride  and  diamond-like coatings  to  a wide  variety  of  substrate
materials.  These thin  film coatings  provide essential  optical, electrical or
durability properties to a substrate material such as glass, metal or plastic.
 
    The  Company   believes  its   FUZION  process   represents  a   fundamental
breakthrough  in thin film  coating technology. The  Company's FUZION process is
capable of producing "ultra-high" grade thin  film coatings, as defined in  U.S.
government  standards. Most high quality thin film coatings are applied in a low
volume batch  type  process.  The  FUZION  process  is  a  continuous  "in-line"
production  system which  permits the  Company to  coat larger  sized substrates
while achieving  a  higher  level  of productivity  and  quality  than  that  of
competing  technologies of which the Company is aware. Based on its knowledge of
the technologies  employed  by its  competition,  the Company  believes  it  can
produce  thin film  coatings at production  rates that are  several times faster
than the rates achievable by competing technologies.
 
   
    The Company began commercial  scale production on  its first FUZION  coating
line  in July 1995. The Company's first product  was its PCO brand of indium tin
oxide ("ITO") coated glass. ITO coated glass consists of a high quality sheet of
thin glass, which the Company  coats with a transparent electrically  conductive
ITO  coating. ITO coated glass is a  principal component of flat panel displays.
These displays are used in watches, calculators, lap top computers and  consumer
electronics devices. The Company believes it has a strong technology position in
the  manufacture of ITO coated  glass for the twisted  nematic ("TN") segment of
the flat panel display market. To further its market position and to attempt  to
secure  higher margins,  the Company  has recently  introduced a  new ITO coated
glass product for the high  resolution super-twisted nematic ("STN") segment  of
this market.
    
 
    In  the  second  quarter  of  1996, the  Company  is  scheduled  to commence
commercial production on its second FUZION coating line. This line will be  used
to  produce the  Company's ZeroRay glare  and radiation control  filters for use
with computer  monitors  and  televisions,  as  well  as  other  anti-reflection
products  and enhanced reflection mirrors.  Additionally, during the second half
of 1996 the  Company intends  to install  a third  FUZION coating  line for  the
production  of ArtGlas,  an anti-reflection, ultraviolet  light blocking picture
framing glass.
 
TECHNOLOGY
 
    The Company's core  manufacturing technology  is based on  a vacuum  coating
process  known as  planar magnetron  sputtering. This  process is  used to apply
microscopic thicknesses  of  thin film  coatings  onto a  variety  of  substrate
materials.  The coating process  occurs in a  specially designed vacuum chamber.
The source material for the coating is normally a metal plate referred to as the
"target," which is mounted on a device called a "magnetron sputtering  cathode."
The  cathode and target  assembly become the negative  terminal in an electrical
circuit. A specially designed regulated  power supply energizes the cathode  and
target  providing  a  source  of  electrons. A  small  volume  of  argon  gas is
introduced into the vacuum chamber near the cathode. Electrons emitted from  the
cathode  collide  with  these argon  atoms  causing  the argon  atoms  to become
positively charged or "ionized."  The negative charge on  the target provides  a
strong  electrical attraction for the argon gas  ions causing them to strike the
target with very high  velocity. The kinetic energy  which they transfer to  the
target  surface results in an atom of  the target material being "sputtered" off
the surface.  The  sputtered  atom travels  at  a  very high  speed  toward  the
substrate  material which  is passing  through the  vacuum coating  chamber. The
sputtered atom strikes  the substrate surface  with sufficient force  to form  a
strongly  bonded coating. This bonding is  superior to that achieved by chemical
vapor deposition and evaporation type coating processes.
 
                                       21
<PAGE>
   
    The Company has developed what it believes to be significant enhancements to
the basic planar  magnetron sputtering process.  The patented FUZION  technology
increases  the production rate of a  basic planar magnetron system by increasing
the sputtering rate  of the  target (i.e.,  the rate  at which  the material  is
removed from the target) and thus the rate at which the material is deposited on
the  substrate. "Ultra-high" grade thin film coatings, which form the functional
element of a  wide variety of  products, have traditionally  been applied  using
batch  chemical  vapor deposition  and evaporation  type coating  processes. The
FUZION technology  applies high  quality coatings  with excellent  adhesion  and
durability in a continuous in-line system.
    
 
    The  Company  believes  that  the FUZION  process  provides  lower  costs of
manufacturing and  equal or  superior product  quality compared  to  alternative
technologies.  The major  cost components of  all of the  Company's products (in
order of magnitude) are depreciation of production equipment, facilities  costs,
direct  and indirect labor, general factory  overhead, substrate cost and target
material cost. Of  these product  cost components,  all but  substrate cost  are
significantly  impacted  by  the throughput  of  the coating  line.  The Company
believes that the production  rates of its FUZION  process, as operating in  its
existing  line, range from two to ten times faster than rates known to have been
achieved by  its competitors.  This belief  is based  upon a  comparison of  the
FUZION  production rates with  published production rates  of the best available
commercial equipment. The Company  further believes, based  on its knowledge  of
the industry, that most competitors are operating equipment which has even lower
production rates than those of the best available commercial equipment.
 
    In addition to lower manufacturing costs due to higher production rates, the
Company  believes the FUZION process provides  equal or superior product quality
compared to competing processes. The Company bases this belief on the fact  that
the  FUZION technology  also includes the  Company's QTROL-Registered Trademark-
closed  loop  automated  process  control  system.  The  QTROL  System  combines
commercially available process measurement devices with proprietary electronics,
optics and computer software to provide real time measurement and control of all
critical  process parameters.  The best  available commercial  coating equipment
does not  provide  such  process  control hardware  and  software.  The  Company
believes  that it is essential to have such systems to achieve both high quality
and high manufacturing yields.
 
STRATEGY
 
    The Company's  strategy is  to leverage  the competitive  cost, quality  and
performance advantages, which it believes the FUZION process provides, to secure
a strong market position in the manufacture and sale of optical and electrically
conductive thin film products.
 
    To achieve this strategy the Company is implementing the following plans:
 
    - Focusing  market  development resources  on  high volume  applications for
      optical and electrically conductive thin film products where the Company's
      FUZION process and  product technologies  provide significant  competitive
      advantages.
 
    - Continuously improving product and manufacturing technologies to build and
      maintain competitive advantages.
 
    - Maintaining  highly disciplined cost  controls to insure  that the Company
      achieves competitive cost advantages.
 
PRODUCTS AND MARKETS
 
    Photran is targeting  markets for optical  and electrically conductive  thin
film  products  where  its  FUZION  process  can  provide  the  Company  with  a
competitive advantage. The Company strives  to develop and manufacture  products
incorporating  innovative  or enhanced  features  which address  current product
shortcomings or the needs of newly developing markets.
 
                                       22
<PAGE>
    The following is a summary of  the initial products the Company will  supply
and the general markets which these products serve:
 
<TABLE>
<CAPTION>
          PRODUCT/DESCRIPTION                             MARKET
- ----------------------------------------  --------------------------------------
<S>                                       <C>
ITO PRODUCTS
  PCO  AND LCM  transparent electrically  All types of  flat panel displays  and
   conductive glass sheets                resistive and capacitive touch screens
 
ANTI-REFLECTION PRODUCTS
  ZERORAY  glass  panels  with  A/R  and  New and aftermarket computer monitors,
   radiation control coatings             lap top displays and televisions
 
  UVAR  plastic  eyeglass  lenses   with  Prescription and nonprescription
   glare   reduction,   enhanced   night  eyeglass lenses
   vision,  ultraviolet  light  blocking
   and abrasion resistant properties
 
  POLARCLEAR   polarizing  filters  with  All liquid crystal displays
   glare reduction, contrast enhancement
   and   ultraviolet   light    blocking
   coatings
 
  ARTGLAS glare reduction and             Glass for framing artwork,
   ultraviolet  light  blocking  picture  photographs, and display cases
   framing glass
 
ENHANCED REFLECTION MIRROR PRODUCTS
  PMAX Ultra-high grade optical mirrors   Projection televisions,  photocopiers,
                                          laser  and bar code scanners, overhead
                                          projectors and other specialty  mirror
                                          applications
</TABLE>
 
    ITO PRODUCTS AND MARKETS
 
    To date, the Company's principal product has been its PCO brand TN grade ITO
coated  glass. In April  1996 the Company  commenced shipments of  its LCM brand
coated glass for STN grade LCDs.
 
    PCO BRAND TN  GRADE AND LCM  BRAND STN GRADE  ITO COATED GLASS.   The  first
product the Company introduced was its PCO brand TN grade ITO coated glass which
is the primary material used to construct many types of flat panel displays. The
most  common type of flat  panel display is the  TN grade liquid crystal display
("LCD"), which is used in watches, calculators, electronic games and most  types
of  inexpensive consumer electronics devices.  These displays, which incorporate
TN grade ITO coated glass, are produced in very high volume by an estimated  200
display manufacturing companies located in Japan and other Asian countries.
 
   
    The Company entered the TN grade ITO coated glass market because it provided
a  high volume, high growth market which  could be accessed rapidly with limited
marketing expenditures.  It  also provided  an  ideal high  volume  product  for
proving  and refining  the Company's FUZION  process. The  Company believes that
when it introduced this product it was the first ITO coated glass produced in  a
single  step process from powdered metal oxide  ITO target material. To the best
of the Company's knowledge,  existing products were produced  in a two or  three
step  process or in a batch or  semi-batch process. Based on internal comparison
testing of competing products, the Company believes its PCO coated glass product
provides the  highest  light transmission  and  electrical conductivity,  for  a
specified  film thickness,  of any  commercially available  TN grade  ITO coated
glass product.
    
 
   
    TN grade ITO coated glass is a product with profit margins which reflect the
price competitive market for  this item. During 1996  the Company will focus  on
the  market development of its higher margin  LCM brand ITO coated glass for STN
grade LCDs  and reduce  its emphasis  on TN  grade ITO  coated glass  as  market
conditions warrant. It does not intend, however, to abandon its current emphasis
on  production of  twisted nematic ("TN")  grade ITO coated  glass unless market
demand for
    
 
                                       23
<PAGE>
   
STN grade coated glass products  warrants a reduction in  focus on the TN  grade
segment  of the  market. The  Company believes,  therefore, that  its continuing
results of operations do not depend  materially on the commercial acceptance  of
its STN grade ITO coated glass.
    
 
    The  Company  believes its  LCM brand  ITO coated  glass provides  the first
commercially available ITO coated  glass which eliminates  virtually all of  the
internal light reflection in a LCD. This is achieved by the use of a multi-layer
thin  film coating  which provides  an "index  of refraction  match" between the
glass substrate and liquid crystal  fluid inside the LCD.  The use of LCM  brand
ITO  coated glass  results in  a significant  improvement in  the brightness and
contrast of LCDs.
 
    To insure  a long  term opportunity  in  the ITO  coated glass  market,  the
Company  believes it will need to penetrate  the market for STN grade ITO coated
glass. The  Company believes  that the  features described  above give  LCM  the
potential  to become a preferred material in the market for STN grade ITO coated
glass. According to industry sources, approximately 29.3 million square feet  of
STN grade ITO coated glass was produced in 1995.
 
    Based  on a report published by  Stanford Resources, Inc., a market research
firm specializing in the electronic  display industry, the worldwide market  for
the  ITO coated glass  used to manufacture all  types of LCDs  is expected to be
approximately $268 million  by the  year 2000. A  report from  the same  service
indicates that by the year 2002 the market for flat panel displays, of which ITO
coated  glass is  a major  component, is  forecast to  be more  than $23 billion
annually. The projected compound annual growth  rate for the LCD segment of  the
flat  panel display market  is estimated to be  21% for the  period from 1991 to
2000 by Semiconductor International, a  trade publication. This rapid growth  in
the  market for finished displays drives  a corresponding increase in demand for
ITO coated glass.
 
    In 1994 the Clinton Administration launched the U.S. Display Consortium with
$1 billion of federal funding to foster U.S. production of next generation  flat
panel  displays. The Company believes it is well positioned to take advantage of
the potential growth in the U.S. flat panel display industry.
 
    TOUCH SCREEN PANELS.  The Company also coats flat and bent glass panels with
ITO and  antimony  tin  oxide  materials. These  coated  glass  panels  are  the
principal material component in all resistive and capacitive type touch screens.
Resistive  and capacitive  type touch  screens account  for the  majority of the
touch screen market.
 
    A/R PRODUCTS AND MARKETS
 
    Anti-reflection ("A/R") coatings consist  of microscopically thin layers  of
metal  and  metal  oxide materials  that  utilize  the principle  of  light wave
interference to reduce  the reflectivity of  the surface of  a glass or  plastic
substrate.  As generally used  in the industry, the  term "ultra low reflection"
means that normal surface reflection is  reduced by at least 99.5%. The  Company
has developed and produced limited quantities of the four A/R products described
below on its P-1 FUZION coating line, all of which meet the ultra low reflection
criteria.
 
    The  Company plans to  begin commercial production of  these products in the
second half  of 1996.  Although  these products  have  been produced  in  sample
quantities  on the P-1 FUZION coating line,  it is not feasible, due to capacity
limitations, to produce them on a commercial scale on this equipment. Therefore,
three of the Company's A/R products  are dependent upon the successful start  up
of  a second FUZION coating line (which the  Company refers to as "P-2") and one
is dependent upon the start-up of a third FUZION coating line. The P-2 equipment
is being installed and is scheduled for  start-up late in the second quarter  of
1996. The third FUZION coating line is scheduled for start-up in the second half
of 1996.
 
   
    ZERORAY  GLARE AND RADIATION  CONTROL FILTERS.  ZeroRay  filters are flat or
bent glass panels, sized to  fit in front of  a computer monitor, television  or
lap top computer display, which have an ultra low reflection coating on one side
and  a  patented optical  gel  adhesive, Gelglas-Registered  Trademark-,  on the
opposite side. The  Gelglas adhesive provides  the first low  cost, easy to  use
method for attaching a glare filter panel directly to the display screen.
    
 
                                       24
<PAGE>
    The  Company  believes that  its ZeroRay  filters are  the first  product to
provide an ultra low reflection  filter with high efficiency radiation  control,
improved  color fidelity  and contrast  with no  loss of  screen brightness. All
other glare  and  radiation control  products  of  which the  Company  is  aware
diminish screen brightness by 43% to 70%. In addition, the Company believes that
its  ZeroRay  filters are  the  only products  which  attenuate low  level X-Ray
emissions from CRT type displays. The  Company anticipates the retail price  for
its  ZeroRay  product will  be comparable  to other  high quality  filters which
currently retail for $75 to $125.
 
   
    According to the December  1994 issue of Information  Display, in 1994  more
than 40 million computer monitors and more than 125 million television sets were
sold.  Based on its internal market analysis, the Company estimates that in 1995
the worldwide market for glare filter  panels was approximately 3 million  units
with  a market value of $90 million.  Current filter products are sold primarily
for aftermarket installation by end users. Although some new monitors are  being
supplied   with  either  a  chemically  etched  surface,  which  reduces  screen
resolution and  contrast,  or a  low  quality  spray-on A/R  coating,  most  new
monitors,  televisions and flat panel displays  do not have any radiation filter
or A/R  coating. The  Company believes  that its  ZeroRay filters  will  provide
substantial cost and performance benefits for both new and existing displays.
    
 
    UVAR EYEGLASS LENSES.  UVAR lenses are plastic prescription eyeglass lenses,
which  the  Company will  purchase  from lens  manufacturers  and coat  with its
ultraviolet ("UV") light blocking and
A/R coating. A/R coatings reduce the  unattractive glare from the front  surface
of eyeglass lenses and contribute to improved night vision. The Company believes
its  UVAR lenses will be the first  eyeglass lenses to combine a high durability
scratch resistant A/R coating with full ultraviolet light blocking properties.
 
    More than 80 million pair of  prescription eyeglass lenses were sold in  the
U.S. in 1995, according to a leading supplier of such lenses. A report published
in  the U.S. Optical Industry  Handbook '95 estimates U.S.  market share for A/R
coated lenses to be 5% of all  lenses sold. By comparison, the report  estimates
the  European and Asian A/R coated lens market shares to be approximately 50% to
80%. The high cost of  batch processes currently used  to apply A/R coatings  to
eyeglass  lenses, along with durability and  cleaning problems, have limited the
market acceptance for  A/R coatings  in the  U.S. The  Company's FUZION  coating
process creates an opportunity to overcome these product limitations with lenses
that are highly durable, easily cleaned and low cost.
 
   
    POLARCLEAR  POLARIZING FILM.  The Company's PolarClear product consists of a
sheet of plastic polarizing film, which is available from several sources in the
U.S. and Asia, to which  the Company will apply  a proprietary A/R coating.  The
Company  does  not  currently  purchase  this material  and  does  not  have any
agreements with any  suppliers of  the material.  Every LCD  display utilizes  a
plastic  polarizing film on the  front of the display.  The Company believes its
PolarClear product will be the only product which substantially eliminates glare
and blocks  UV light.  The Company  also  believes that  the UV  light  blocking
feature,  combined with the high  durability of its A/R  coating, will provide a
competitive advantage. According to  a report by  Stanford Resources the  annual
market for polarizers is projected to be $420 million by the year 2000.
    
 
    ARTGLAS  PICTURE FRAMING GLASS.  ArtGlas picture framing glass consists of a
high quality sheet of clear glass which the Company will coat with an A/R and UV
light blocking coating.  The Company believes  its ArtGlas product  will be  the
only  picture  framing glass  available that  combines  an ultra  low reflection
surface and UV light blocking properties.  UV light is present at very  damaging
levels  in  sunlight and  most fluorescent  light.  It is  the primary  cause of
irreversible fading in paintings, prints and photographs.
 
    According to the Professional Picture Framers Association, the annual market
for picture framing is approximately  $4 billion. Historically, picture  framing
glass  has accounted for approximately 8% of the total framing cost. The Company
estimates that  between 10%  and 12%  of the  glass currently  used for  picture
framing  is a chemically etched "non glare"  type of glass. This product reduces
glare by  creating a  matte texture  for  the picture  or artwork.  Although  it
reduces glare, etched glass also
 
                                       25
<PAGE>
reduces  the image clarity and  color fidelity. The Company  is aware of two A/R
coated picture framing glass products produced by a chemical dip process.  These
products  provide no UV light  blocking and have less  effective optical and A/R
properties than ArtGlas.
 
    The Company  plans to  sell  ArtGlas for  approximately  the same  price  as
existing  chemically  dipped  glass. The  Company  believes that  the  price and
performance qualities  of  ArtGlas will  provide  the Company  with  competitive
advantages in the picture framing glass market.
 
    The Company's current production systems cannot accommodate the large sheets
of  glass required to produce  ArtGlas. The Company intends  to use a portion of
the proceeds of this Offering to build a third FUZION coating system capable  of
coating  40" X 60" sheets of ArtGlas. This line is scheduled for start-up in the
second half of 1996.
 
    ENHANCED REFLECTION MIRROR ("ERM") PRODUCTS AND MARKETS
 
    ERMs are  glass  or plastic  sheets  coated with  highly  reflective  mirror
coatings on the surface closest to the point of use (front surface). The Company
commenced  shipments of ERM products on a  limited basis in the first quarter of
1996. The Company intends  to begin commercial production  of its standard  PMAX
brand   front  surface  mirrors  in  the  second  half  of  1996  following  the
installation of its second production line. The Company is currently producing a
specialized version of its PMAX mirror on its existing production equipment  and
intends  to shift production of this product to its second line when it is fully
operational.
 
    PMAX ENHANCED REFLECTION MIRRORS.  PMAX  front surface mirrors consist of  a
polished  glass sheet coated with an ultra high reflection mirror coating on the
front surface. Front surface mirrors are used in all photocopiers, laser and bar
code scanners, projection televisions, overhead projectors and many other  types
of  specialty mirror applications Using the FUZION process, the Company believes
it  can  produce  front  surface  mirrors  with  higher  reflection  and  better
durability than those of any known competitor.
 
SALES AND DISTRIBUTION
 
    The  Company's sales and distribution method varies for each of its products
and product categories. To date, the Company's sales efforts have been conducted
largely by senior management. The Company recently hired a director of sales and
marketing for  its ZeroRay  products and  intends to  add personnel  in  similar
positions for its other products as required.
 
    ITO PRODUCTS
 
    ITO  products  are  sold  to manufacturers  of  flat  panel  displays. These
displays are  used  in  such  products  as  watches,  calculators  and  lap  top
computers.  The Company  sells its  ITO coated  glass and  touch screen products
directly and through independent sales agents in the U.S., Asia and Europe. This
method of distribution  has provided  a low  cost, effective  method of  serving
these markets.
 
    The  Company has granted  an exclusive distributorship  for the territory of
Hong Kong and Shenzhen,  China. The distributor receives  a commission on a  per
unit  basis  for ITO  coated  glass sold,  and  is required  to  achieve certain
quarterly minimum sales requirements in  order to maintain its exclusivity.  The
Company  has informal distribution arrangements  with several European and Asian
sales agents and  is in  the process  of formalizing  these arrangements.  These
sales  agents are  paid a  sales commission  that is  comparable to  that of the
distributor.
 
    A/R PRODUCTS
 
    ZERORAY GLARE AND RADIATION CONTROL FILTERS.  The Company is in the  process
of  establishing  U.S., European  and  Asian distribution  arrangements  for its
ZeroRay  products.  ZeroRay   products  will   be  sold   to  computer   monitor
manufacturers  and  distributors ("OEMs"),  value  added resellers  ("VARs") and
computer retailers. Initial sales  efforts are focused  on the VAR  distribution
channel.  To reach  the VARs, the  Company is  in the process  of establishing a
nationwide network of  independent sales representatives.  This network will  be
supported  by the ZERORAY EXPRESS sales and technical support staff. The ZERORAY
EXPRESS  staff  will  provide  order   processing  and  technical  support   for
 
                                       26
<PAGE>
ZeroRay  products. Sales and marketing of  ZeroRay products to OEM accounts will
be handled on  a direct basis.  The Company  has not secured,  but is  pursuing,
additional  aftermarket channels  of distribution  for ZeroRay  products such as
catalog sales and manufacturers and distributors of computer accessories.
 
    UVAR EYEGLASS LENSES.   The  Company intends  to sell  UVAR coated  eyeglass
lenses   directly   to  established   lens   distributors  and   wholesale  lens
laboratories.
 
    POLARCLEAR POLARIZING FILM.  PolarClear A/R and UV light blocking polarizing
films will  be  distributed through  the  Company's existing  ITO  coated  glass
selling  agents. This  product is  used by the  same customers  who purchase the
Company's ITO coated glass products.
 
   
    ARTGLAS PICTURE FRAMING GLASS.  ArtGlas will be sold on a wholesale basis to
the approximately 200 local and  regional picture framing material  distributors
in  the  U.S.  Although the  Company  does  not have  any  agreements  with such
distributors, it believes it  can effectively access  these distributors with  a
relatively small direct sales force.
    
 
    ENHANCED REFLECTION MIRROR PRODUCTS
 
    PMAX  ENHANCED  REFLECTION MIRRORS.    To reach  the  markets for  ERMs, the
Company will utilize factory based sales  personnel to call on manufacturers  of
photocopiers,  laser  and  bar code  scanners,  overhead  projectors, projection
televisions and specialty mirrors.
 
COMPETITION
 
    The Company has not yet shipped significant quantities of products in any of
the markets in which it intends to compete. It has not, therefore, established a
significant market presence in any of these markets.
 
    ITO PRODUCTS
 
    TN GRADE AND STN GRADE ITO COATED GLASS.  Approximately half of the  world's
production  capacity for TN grade ITO coated  glass is located in Japan. Most of
the production capacity in Japan is utilized by Japanese LCD manufacturers.  The
principal  suppliers of ITO coated  glass for the LCD  industry outside of Japan
are Applied Films Corporation  of Boulder, Colorado;  Samsung Corning of  Seoul,
South  Korea  and  Merck  Balzars of  Liechtenstein.  These  ITO  suppliers have
substantial financial,  technical, manufacturing  and marketing  resources,  are
well  established and will provide formidable competition to the Company for the
foreseeable future. The  Japanese ITO  coating manufacturers are  not active  in
supplying  markets outside of Japan. However, to the extent the Company attempts
to develop business in Japan they will provide direct competition. Although  the
Company   believes  that  it  possesses  superior  technology  to  many  of  its
competitors, there can be no  guarantee it will be  able to secure a  profitable
short or long-term market position for its ITO coated glass products.
 
   
    Because  of the strong competition in the  TN grade ITO coated glass market,
the Company is planning to focus on the higher quality, higher margin STN  grade
segment  of the ITO  coated glass market.  The Company believes  that only three
Japanese ITO  producers  and Samsung  Corning  are able  to  supply  significant
quantities  of  STN grade  ITO coated  glass. The  Company estimates  that until
recently, approximately 90% of the demand for STN grade ITO coated glass was  in
Japan.  However, beginning in the fourth quarter  of 1995, several new STN grade
LCD production lines have commenced  production in Taiwan, Singapore, Korea  and
Hong  Kong. The Company believes that the non-Japanese markets for STN grade ITO
coated glass will be easier to penetrate than the Japanese market. The  Company,
therefore,  intends  to  target  the  non-Japanese  markets  for  STN  grade LCD
manufacturing and has  made a strategic  decision to refrain  from entering  the
Japanese  market because formidable  competition and captive  markets would make
such penetration  difficult  and costly.  Although  the Company  does  not  have
contracts  with the  LCD manufacturers  outside of  Japan, it  believes that its
FUZION process, combined with its LCM brand ITO coated glass product will  allow
it  to compete  effectively for  this business  on the  basis of  price, product
performance and quality.
    
 
    TOUCH SCREEN PANELS.   The only  existing supplier of  ITO and antimony  tin
oxide  coated panels for the touch screen market that the Company is aware of is
the Display Products Division of Donnelly
 
                                       27
<PAGE>
Corporation in  Holland,  Michigan.  Donnelly has  fully  integrated  production
facilities  for  glass  bending  and thin  film  coating.  Although  the Company
believes it  can effectively  compete in  this  market on  the basis  of  price,
product  performance and quality, there can be no assurance that it will be able
to do so.
 
    A/R PRODUCTS
 
   
    ZERORAY GLARE AND RADIATION CONTROL FILTERS.  The largest providers of glare
filters for computer and other display monitors are Optical Coating  Laboratory,
Inc.  ("OCLI") of Santa Rosa, California,  3M Corporation of St. Paul, Minnesota
and Fellowes, Inc. of Itasca, Illinois. OCLI, which the Company believes is  the
dominant  manufacturer of  glare filters,  manufactures glare  filter panels for
both OEMs and the aftermarket from A/R coated glass which it produces on its own
proprietary thin film coating machines.  The Company believes the other  leading
producers  of aftermarket glare filters purchase  the A/R glass from third party
manufacturers, including  Viratec Thin  Films,  Inc. ("Viratec")  of  Faribault,
Minnesota  and  OCLI, and  assemble  the material  into  a plastic  frame. These
independent "framers" market the assembled  products under their own brand  name
through  office supply distributors and other distribution channels. The Company
believes that only Viratec has a manufacturing technology which may approach the
cost efficiency of  the FUZION  process. All  of the  Company's principal  glare
filter  competitors  have substantial  manufacturing, technology,  marketing and
financial resources. The remaining companies supplying products to these markets
rely on  small scale  batch processing  equipment and  will not  likely  provide
direct  competition for the Company. The Company believes that ZeroRay's product
features and competitive cost will  allow it to compete  in this market, but  it
cannot  guarantee  that it  will achieve  success  against its  well established
competition.
    
 
   
    UVAR EYEGLASS LENSES.   At the present time  there are approximately  twenty
companies in the U.S. supplying eyeglass lenses with A/R coatings or providing a
contract   coating  service  to  lens   manufacturers  or  ophthalmic  wholesale
distributors. The  principal U.S.  and international  manufacturers of  eyeglass
lenses  all have some level of in-house A/R coating capability. In addition, the
Asahi-Pentex Company of  Japan and  Merck Balzars operate  large scale  contract
coating facilities in the U.S., Europe and Asia. The Company believes it has the
only   production  technology  suitable  for   high  volume  continuous  in-line
production of  A/R coated  lenses.  In addition,  the  Company believes  it  can
compete  on the  basis of  providing the  only A/R  coated lenses  with UV light
blocking properties  and  a high  level  of abrasion  resistance.  However,  the
combination  of fully integrated manufacturing  and distribution capabilities of
the large U.S. and international eyeglass lens manufacturers and the substantial
financial, technical,  manufacturing and  marketing  resources of  the  existing
contract  coating  service  companies  will  provide  the  Company  with  strong
competition. As a result,  there can be  no assurance that  the Company will  be
successful in penetrating the A/R eyeglass lens market.
    
 
    POLARCLEAR POLARIZING FILTERS.  The market for A/R coated polarizing plastic
sheets  has developed rapidly  in the last  two years. Currently  OCLI and Nitto
Denko of Japan account for the majority of the market for A/R coated  polarizing
material.  There  are  five  other principal  suppliers  of  polarizing material
worldwide. Three are in Japan  and two are in the  U.S. Each of these  companies
have  substantial manufacturing,  technical, marketing  and financial resources.
Although the Company believes  it has a lower  cost manufacturing process and  a
product with superior attributes, there can be no assurance that it will be able
to compete effectively in this market.
 
    ARTGLAS  PICTURE FRAMING GLASS.  There are two companies that the Company is
aware of  that currently  supply low  reflection picture  framing glass.  Denton
Vacuum,  Inc.  of Cherry  Hill,  New Jersey,  and  Schott Glas  Werks  of Mainz,
Germany, sell  anti-reflection picture  glass  for the  framing market  that  is
manufactured  by  a  chemical dip  process.  The Company  believes  that neither
product provides UV light blocking and estimates  that both have 25 to 50%  more
reflected glare than the Company's ArtGlas product.
 
    The  Company  plans to  sell  ArtGlas for  approximately  the same  price as
existing chemically  dipped  glass. The  Company  believes that  the  price  and
performance  qualities  of ArtGlas  will  provide the  Company  with competitive
advantages in the picture  framing market. There can  be no assurance,  however,
that the Company will be able to compete effectively in this market.
 
                                       28
<PAGE>
    ERM PRODUCTS
 
    PMAX  ENHANCED  REFLECTION  MIRRORS.   The  market  for  enhanced reflection
optical mirrors is currently  being served by OCLI,  Viratec and Opton, Inc.  of
Norfolk, Virginia. These three companies are believed to supply more than 90% of
the  worldwide demand  for ERMs.  All three  companies have  large manufacturing
facilities for the production  of ERMs. In addition,  OCLI and Opton have  fully
integrated manufacturing facilities in the U.S., Europe and Asia for cutting and
edge  grinding of  these products to  meet end user  specifications. The Company
believes it can produce ERMs with  higher reflection and better durability  than
its  competitors. However, it faces formidable, well established competition and
there can be no assurance that the  Company will be able to compete  effectively
in this market.
 
MANUFACTURING
    The  Company  has assembled  a  team of  engineers  and scientists  who have
developed the process technology and  commercial scale production equipment  for
manufacturing  thin film  coatings and supporting  production activities. Having
developed its own  proprietary processes,  know-how and  equipment, the  Company
possesses  what it believes is a wide  range of skills and knowledge in advanced
thin film coating technologies.
 
    The Company currently operates a single in-line coating machine which it has
designated "P-1."  The P-1  line is  housed in  a high  quality  environmentally
controlled  clean room. It is being used  primarily to produce ITO coated glass.
The P-1 system is capable of producing ITO coated glass at cycle times which the
Company believes are  significantly faster  than those of  its competitors.  The
Company  encountered operational  and technical difficulties  in connection with
the initial  start-up of  production on  its P-1  line in  1994. These  problems
related primarily to the line's material handling and conveyor systems and their
ability  to withstand the  high temperatures required for  the production of ITO
coated glass. During an extended  rebuild of the P-1  line during 1994 and  1995
these problems were corrected and have not recurred.
 
    The  Company is in the process of  constructing a second FUZION coating line
which has been designated "P-2,"  and which will be  housed in a separate  clean
room  located in the Company's main facility.  Housing each production line in a
separate clean room will enable the Company to implement equipment upgrades  and
perform  maintenance on one  line without disrupting the  operation of the other
line. The P-2  line will be  used primarily for  the production of  A/R and  ERM
products.  Both the P-1 and P-2 lines can produce each of the Company's ITO, A/R
and ERM  products,  thus enabling  the  Company to  produce  its full  range  of
products should one of the lines be shut down for an extended period.
 
   
    The  principal raw materials  used in the  Company's manufacturing processes
are the substrates (glass, metal and  plastic) which are coated with thin  films
and  the targets which are  the source material for  the thin film coatings. The
majority of the products which the Company has produced to date have required  a
glass  substrate. The glass used for ITO coated glass is a special grade of thin
soda lime glass. This material is  available from five suppliers worldwide.  The
Company currently purchases its glass substrate from Glaverbel, S.A. of Belgium,
although it does not have a long term supply agreement with this supplier. Other
suppliers  are located in the  U.K. and Japan. The  Company believes that it can
obtain comparable  quality  material from  other  suppliers should  its  current
source be disrupted.
    
 
    The bent glass panels to be used for ZeroRay filters are currently available
from  two domestic  suppliers. Raw materials  for other products  and the FUZION
target materials are widely available from a variety of sources.
 
    Inventories are periodically reviewed for obsolescence. To date, the Company
has not experienced any material write downs due to inventory obsolescence.
 
                                       29
<PAGE>
RESEARCH AND DEVELOPMENT
    The goal of the Company's research and development activities is to  develop
products  which  consistently  exceed  market standards  in  terms  of features,
performance and  cost. To  achieve this  goal the  Company employs  nine  design
specialists,  three process engineers,  an electronics engineer,  and four Ph.D.
research scientists with backgrounds in  thin film deposition processes,  plasma
physics  and inorganic chemistry. This team  focuses on both product and process
technology research and development and is currently working on the  development
of  several enhanced  versions of  existing products  as well  as innovative new
products which utilize the FUZION  process technology. The Company  occasionally
outsources specific research and development projects. Amounts expended on these
projects are not material to research and development spending as a whole.
 
    In   fiscal  1995  and  1994,  the  Company  spent  $353,636  and  $445,480,
respectively, on product  and technology research  and development. The  Company
expects  in  the  foreseeable  future  to  spend,  on  a  dollar  basis, amounts
comparable to 1995.
 
INTELLECTUAL PROPERTY
    The Company's success depends and will  continue to depend, in part, on  its
ability  to preserve  its trade  secrets, to  operate without  infringing on the
proprietary rights  of third  parties,  and to  maintain patent  protection  for
certain  products and processes.  The Company's policy is  to attempt to protect
its technology by, among other things, filing patent applications for technology
that it considers important to the development of its business. The Company  has
five issued U.S. patents, six U.S. patent applications which have been filed and
16  U.S. patent applications which have been  prepared and are in the process of
being finalized for filing.  The validity and breadth  of claims covered in  the
Company's  patents  and patent  applications involve  complex legal  and factual
questions and, therefore,  may be highly  uncertain. No assurance  can be  given
that  the Company's pending applications will result in patents being issued or,
if issued, that such patents, or the Company's existing patents, will provide  a
competitive advantage, or that competitors of the Company will not design around
any  patents issued  to the  Company. Other  than the  prior art  review done in
connection  with  the  Company's  patent  applications,  the  Company  has   not
undertaken any independent investigation regarding potential infringement of its
current or proposed products on the property rights of others.
 
    The  Company has  also acquired  rights to  use a  patented material  in the
manufacture of its ZeroRay products pursuant to an exclusive license granted  by
the  holders of  the patent  for the  material. The  license requires  a minimum
annual royalty payment  of $80,000 in  the first year  of ZeroRay production  to
maintain  the exclusive license. If the minimum payment is not made, the license
can be converted to a  non-exclusive license. If the  license is converted to  a
non-exclusive  license, the Company may  face increased competition with respect
to its ZeroRay products. The Company is obligated to pay a royalty of 6% in  the
first  year of  ZeroRay production on  the net  sales price of  the product. The
royalty rate increases to 7% in the second year. Royalties in excess of $100,000
in any year will be based on a rate of 5%. This license expires on May 30, 1996.
The Company is  currently negotiating a  five-year extension. In  the event  the
Company  is not successful in obtaining an extension or the license is converted
to a  non-exclusive  license, the  Company  does  not expect  to  be  materially
adversely affected.
 
CUSTOMERS
   
    During 1995 sales of ITO coated glass to the Company's two largest customers
accounted  for 57% and 28% of  total revenue, respectively. These customers have
placed purchase orders with  the Company that are  effective through June  1996.
For  the first  three months  of 1996  sales to  the Company's  largest customer
accounted for 71% of total revenues;  sales to the second largest customer  were
not  material. The Company's  largest customer is  located in Taiwan  and is the
largest LCD manufacturer outside  of Japan. The Company  does not have any  long
term  contractual commitments from its customers. The Company sold its PCO brand
of ITO coated  glass to  a limited  number of customers  in 1995  and the  first
quarter  of 1996, primarily due to  production capacity limitations. The Company
expects to increase the capacity  of its P-1 FUZION coating  line by the end  of
the  second quarter of 1996, and anticipates that  it will be able to expand its
ITO product customer base when this increased capacity is available.
    
 
                                       30
<PAGE>
    The Company  plans to  further expand  its customer  base in  the near  term
through  new product offerings.  Based on current  sales to and  orders from its
largest customer, the Company expects that  customer to continue to account  for
approximately 35% of its sales revenues in 1996.
 
    Customers  for  the Company's  ITO coated  glass products  are predominantly
located in Asia. The Company anticipates that the initial customers for its  A/R
and ERM products will be located predominantly in the U.S.
 
CHINA JOINT VENTURE
 
    The  Company has  entered into a  joint venture agreement  with the Shenzhen
WABO Group  Company, Limited  ("WABO"),  of Shenzhen,  China. The  agreement  is
governed by the laws of the People's Republic of China. WABO is a publicly owned
company traded on the Shenzhen, China stock exchange. The joint venture company,
known  as the Shenzhen  Fortune Conductive Glass  Company, Ltd. ("Fortune"), was
created to produce TN  grade ITO coated  glass for the  Asian market. The  joint
venture  has a term  of 15 years from  the date it  received its business permit
from the Chinese government,  which occurred in November  1994. The term of  the
joint venture may be extended upon agreement of the partners and approval by the
Chinese  government. Upon  expiration of  the joint  venture its  assets will be
liquidated in accordance with Chinese law.  When it is operational, the  Company
believes  the  joint venture  will  be the  largest  TN grade  ITO  coated glass
manufacturing facility  in the  world. A  substantial portion  of the  worldwide
demand  for TN grade  ITO coated glass  is from LCD  manufacturers located in or
near Shenzhen, China.
 
   
    The Company has agreed to  sell to Fortune an  ITO glass coating system  and
technology  limited to the production of TN grade ITO coated glass for the gross
purchase price of $10,145,000. The Company has also agreed to provide a  royalty
free  license to  Fortune for  the use of  certain of  the Company's proprietary
technology for  the production  of TN  grade ITO  coated glass.  The Company  is
obligated  to provide 40%  of the $11,645,000 total  capitalization of the joint
venture. This 40% contribution,totaling $4,658,000,  has been deducted from  the
gross  purchase price  of the  coating system. This  will result  in the Company
receiving a net purchase price of $5,487,000 for the equipment sold to the joint
venture. The Company is  not relying on any  material earnings or  distributions
from Fortune and, therefore, will record the net purchase price of $5,487,000 as
an equipment sale and will not record its capital contribution as an asset.
    
 
   
    Fortune is currently obligated to make a payment of approximately $1,000,000
as  the balance of the purchase price for a building constructed for it by WABO.
Fifty percent of this amount  is due within twelve  months of acceptance of  the
building, with the balance due within twenty four months of such acceptance. The
Company's only financial obligation to the joint venture is its guarantee in the
amount  of $400,000 related to a payment due  by Fortune for the purchase of the
building used by the joint venture.
    
 
   
    The $5,487,000 net purchase  price being paid by  Fortune to the Company  is
secured  by a letter of credit, confirmed by Chemical Bank, New York. Payment of
the final $600,000  of this amount  is contingent upon  the equipment  operating
within certain specifications for ten days at twenty hours per day upon assembly
at  Fortune's facility.  In addition, the  letter of credit  stipulates that the
equipment must be shipped  on or before  June 30, 1996.  The Company expects  to
comply  with  this requirement.  The equipment  was  originally scheduled  to be
shipped by November 6, 1995. Due to a delay by WABO in delivering the letter  of
credit  and the  Company's inability  to obtain  working capital  financing on a
timely basis, the project was delayed  for several months. The project  schedule
has  been  extended by  mutual  agreement between  the  parties. WABO  failed to
deliver an extension of the  letter of credit on  a timely basis, which  further
delayed  the project  and prevented the  Company from shipping  the equipment by
April 15, 1996.  The Company  is subject  to certain  contractual penalties  for
failure  to ship  by April  15. These  penalties require  the Company  to refund
Fortune's advance of approximately $1.5 million, which amount has been  recorded
as a current liability of the Company. A return of this advance would not have a
material  adverse  effect on  the Company's  financial  condition or  results of
operations. WABO  has  orally  agreed  to waive  these  penalties  provided  the
equipment is shipped no later than June 30, 1996. The Company expects to receive
written confirmation of this
    
 
                                       31
<PAGE>
   
waiver  before the end of June 1996 and expects to ship the equipment by the end
of June. Any penalties which the Company  may incur cannot be withheld from  the
confirmed  letter of credit  amounts. However, payment of  the final $600,000 of
the purchase price will not occur  until certification is received from  Fortune
after  the equipment is shipped. The Company will not ship the equipment until a
written waiver of penalties is received. In the event the Company does not  ship
the  equipment,  it intends  use the  equipment  to manufacture  ArtGlas picture
framing glass. The Company does not expect, therefore, that failure to ship  the
equipment  will have  a material  adverse impact  on its  financial condition or
results of operations.
    
 
   
    Due to the  shipping costs  and customer lead  time requirements  associated
with TN grade ITO coated glass produced in the U.S., as well as the intensity of
price  competition in this market,  the Company expects that  the majority of TN
grade ITO coated glass for use in Asia will eventually be produced in Asia. This
shift is expected to occur over  several years. Therefore, over the next  twelve
months,  the Company expects that its production of TN grade ITO coated glass at
its U.S. facility will gradually decrease  and be shifted to the joint  venture.
The  Company  is obligated  to use  commercially  reasonable efforts  to develop
markets for  the joint  venture's products  outside of  China. The  compensation
which the Company will receive for these efforts will be determined by Fortune's
Board of Directors; the Company does not anticipate that it will expend material
sums  in connection with such  efforts. The Company plans  to shift the capacity
used for TN grade ITO coated glass to the production of higher margin STN  grade
ITO  coated glass. Other than the purchase  price it will receive for the FUZION
coating equipment,  the  Company  is  not relying  on  any  material  amount  of
distributions or earnings from the joint venture in the foreseeable future.
    
 
GOVERNMENT REGULATION
    The   Company's  business  is  not  subject  to  any  material  governmental
regulations, nor are any governmental  approvals required for the operations  of
the  Company  as  currently conducted  or  anticipated  to be  conducted  in the
foreseeable future. Costs and effects  of environmental compliance are also  not
material to the Company's business.
 
EMPLOYEES
    As of March 31, 1996, the Company had 79 full-time employees and 2 part-time
employees.  Of these full-time employees, 13 are in research and development and
engineering, 26  are  in manufacturing  and  production, 34  are  in  machining,
machine  assembly  and  facilities  maintenance,  and  6  are  in  management or
administrative positions.  None of  the  Company's employees  are covered  by  a
collective bargaining agreement, and management considers its relations with its
employees to be good.
 
FACILITIES
   
    The  Company leases  its main office  and manufacturing  facility located at
21875 Grenada  Avenue,  Lakeville, Minnesota,  55044.  This 23,000  square  foot
facility  consists  of  16,000  square feet  of  manufacturing  space (including
approximately 10,000  square feet  of  high quality  environmentally  controlled
clean  room area). The  remaining 7,000 square feet  is used for administrative,
engineering, R&D and  sales offices.  The Company  also leases  a nearby  47,000
square  foot  building located  at  21725 Hanover  Avenue,  Lakeville, Minnesota
55044. The Company  intends to  use this facility  for its  machine shop,  glass
bending  operations, shipping and  receiving, equipment manufacturing operations
and future manufacturing  lines. The  Company has  options to  purchase both  of
these buildings. The Company believes these facilities are in good condition and
are  adequate for the foreseeable future. The Company carries insurance covering
the full replacement value  of these properties.  For discussion concerning  the
lease obligations, see Note 6 to Financial Statements.
    
 
    The Company also owns the majority of its manufacturing equipment as well as
equipment used in its research and development activities. Some of the Company's
machine  shop and office  equipment is subject to  operating and capital leases,
none of  which are  material to  the Company's  business. All  of the  Company's
personal  property, whether owned  or leased, is in  good condition and adequate
for the foreseeable future.
 
                                       32
<PAGE>
                                   MANAGEMENT
 
    The following table sets  forth certain information  concerning each of  the
Company's directors and executive officers:
 
<TABLE>
<CAPTION>
             NAME                   AGE                               POSITION
- ------------------------------      ---      ----------------------------------------------------------
<S>                             <C>          <C>
David E. Stevenson (3)                  46   President, Chief Executive Officer, and Chairman
Paul T. Fink                            40   Chief Financial Officer, Treasurer, Director
Kathleen V. Stevenson (2)               46   Secretary, Director
Robert S. Clarke (1)(3)                 52   Director
Steven King (1)(2)                      50   Director
</TABLE>
 
- ------------------------
(1) Member of Audit Committee.
 
(2) Member of Compensation Committee.
 
(3) Member of Nominating Committee.
 
    The  Board of Directors  is divided into three  classes, and directors serve
for staggered three-year terms. Kathleen V.  Stevenson serves in a class with  a
term  expiring in 1997; Robert S. Clarke and Steven King serve in a class with a
term expiring in 1998; and David E. Stevenson and Paul T. Fink serve in a  class
with  a term expiring  in 1999. Officers  serve at the  discretion of the Board.
David E. Stevenson and Kathleen V. Stevenson are husband and wife.
 
    Subsequent to  this  Offering,  management anticipates  that  the  Board  of
Directors  will add at  least one additional outside  director, depending on the
availability of a candidate with appropriate skills, background and  willingness
to serve on the Board. No such candidate has currently been identified.
 
    DAVID  E. STEVENSON, the  founder of the  Company, has been  employed by and
served as a director and officer of the Company since its inception in May 1991.
From 1988 to 1991, Mr.  Stevenson was employed as  president and CEO of  Viratec
Thin  Films, Inc. and Viratec Tru Vue Inc. of Faribault, Minnesota. From 1984 to
1988, Mr. Stevenson was executive vice president and chief operating officer  of
Viracon,  Inc. of  Owatonna, Minnesota.  From 1983 to  1984, he  was director of
corporate development for Apogee  Enterprises, Inc., of Minneapolis,  Minnesota.
Mr. Stevenson holds a Bachelor of Science degree from the University of Michigan
and is also a Certified Public Accountant.
 
    PAUL  T. FINK has been employed by  the Company since January 1995. Mr. Fink
joined the Company as Controller, was named Chief Financial Officer in  February
1996  and was elected as a director in March 1996. Prior to joining the Company,
Mr. Fink  was  employed as  the  Chief  Financial Officer  of  Vomela  Specialty
Company,  St.  Paul,  Minnesota,  from  1989 to  1994  and  Com-Tal  Machine and
Engineering, Vadnais  Heights,  Minnesota,  from  1984 to  1989.  Mr.  Fink  was
employed by McGladrey & Pullen, Certified Public Accountants, as an auditor from
1980 to 1984. Mr. Fink holds a Bachelor of Science degree in Accounting from the
University  of  Minnesota,  a  Masters  of  Business  Administration  degree  in
Financial Management from the University of St. Thomas, and is also a  Certified
Public Accountant.
 
    KATHLEEN  V. STEVENSON has been a director  and officer of the Company since
November 1991 and is a part-time  employee of the Company responsible for  human
resource  matters. Ms.  Stevenson has owned  and operated a  tableware and linen
mail order company  in Wayzata, Minnesota  since 1984. Previously  she has  been
employed  in various financial management and staff positions with Norwest Bank,
Minneapolis, Minnesota,  Michigan Bank,  Detroit,  Michigan, and  City  National
Bank,  Detroit, Michigan.  Ms. Stevenson holds  a Bachelor of  Science degree in
Accounting from Michigan State University.
 
                                       33
<PAGE>
    ROBERT S. CLARKE has been a director of the Company since March 1993.  Since
1981  Mr. Clarke  has been  the President of  Alpen, Inc.,  Boulder, Colorado, a
leading manufacturer of  architectural insulating glass.  Since 1991 Mr.  Clarke
has  also been President,  Chairman and a  director of Vac-Tec  Systems, Inc., a
public company involved in the manufacture of high performance windows utilizing
suspended vacuum coated films.
 
    STEVEN KING has been a  director of the Company  since May 1993. Since  1986
Mr.  King has been  Chairman and CEO  of Landscape Structures,  Inc., of Delano,
Minnesota, a company which creates  and manufactures innovative play  structures
promoting early childhood development. Mr. King is also a registered architect.
 
KEY PERSONNEL
 
    DR.  ALEX ERSHOV has been employed by the Company as Chief Process Scientist
since May  1995. Dr.  Ershov is  a  research and  development scientist  with  a
background  in the development of innovative  thin film deposition processes. He
is primarily  responsible  for  the  development  of  the  Company's  high  rate
microwave  atomic oxygen deposition process. Dr. Ershov holds a Ph.D. in Physics
from the General Physics Institute of Moscow.
 
    JAMES GRIESER  has been  employed by  the Company  as Manager  of Thin  Film
Process  Engineering since  December 1995. Mr.  Grieser has 15  years of process
research and development experience in  vacuum deposited thin film coatings.  He
has  developed  several unique  thin  film materials  for  use in  aerospace and
military applications. He holds a B.S. degree in Physics from Elmhurst College.
 
EXECUTIVE COMPENSATION
 
    The following table  sets forth certain  information regarding  compensation
paid during each of the Company's last three fiscal years to the Company's Chief
Executive  Officer.  No employee  of the  Company received  salary and  bonus in
excess of $100,000 for the covered periods:
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                                     LONG-TERM
                                                                                                COMPENSATION AWARDS
                                                                                                --------------------
                                                                      ANNUAL COMPENSATION            SECURITIES
                                                                  ----------------------------       UNDERLYING
NAME AND PRINCIPAL POSITION                                        FISCAL YEAR      SALARY          OPTIONS (1)
- ----------------------------------------------------------------  -------------  -------------  --------------------
<S>                                                               <C>            <C>            <C>
David E. Stevenson .............................................         1995     $    81,560          25,000(2)
  Chief Executive Officer and Chairman                                   1994          79,220            --
                                                                         1993          60,000            --
</TABLE>
 
- ------------------------
(1) Number of shares of Common Stock subject to options granted during the  year
    indicated.
 
(2)  Options to purchase 25,000 shares were  granted to Mr. Stevenson as part of
    his 1995 compensation as an officer and employee of the Company.
 
COMPENSATION OF DIRECTORS
 
    Directors are not currently paid fees for attending meetings. All  directors
are reimbursed for their travel expenses incurred in attending Board meetings.
 
    On  March  1,  1995 the  Board  of Directors  granted  currently exercisable
options to purchase 5,000 shares of Common  Stock at $4.00 per share to each  of
three  outside members  of the  Board of Directors  (for options  to purchase an
aggregate of 15,000 shares of Common Stock) as compensation for prior service to
the Company. On the same  date, the Board of  Directors also granted options  to
purchase  15,000 shares  of Common  Stock at  $4.00 per  share to  each of three
outside members of the Board of Directors (for options to purchase an  aggregate
of  45,000 shares of  Common Stock) as compensation  for each outside director's
then  current  three-year  term.  These  45,000  options  vest  ratably  over  a
three-year  period commencing March 15, 1996. All options expire ten years after
the date of grant.
 
                                       34
<PAGE>
Options for 10,000 shares expired in March  1996 upon the resignation of one  of
the outside directors. This director, who is a sitting judge, resigned due to an
ethical  conflict of  interest relating  to a  judge serving  on the  board of a
public company.
 
EMPLOYMENT AGREEMENT
 
   
    The  Company  has  entered  into  an  employment  agreement  with  David  E.
Stevenson, its Chief Executive Officer, for a four year term ending December 31,
1997.  The agreement  provides for a  maximum base compensation  of $120,000 per
year if certain financial  performance goals, as set  by the Company's Board  of
Directors,  are met. The  maximum base compensation may  be reset through mutual
agreement of  Mr. Stevenson  and  the Board  of  Directors. The  agreement  also
provides  for  the  issuance of  options,  at  the discretion  of  the  Board of
Directors, for the purchase of the Company's Common Stock, and an option for Mr.
Stevenson to  require  the Company  to  repurchase  his shares  if  the  Company
terminates his employment without cause. As of December 31, 1995, 25,000 options
had  been issued to Mr. Stevenson pursuant to this agreement. The agreement also
provides for an  annual incentive bonus  in the event  the Company has  earnings
before  taxes in excess  of 30% of shareholders'  equity at the  last day of the
fiscal year. To date, Mr. Stevenson has  not been eligible to receive an  annual
incentive  bonus. Under the agreement the Company has the right to terminate Mr.
Stevenson's employment with three months notice and would generally be  required
to   pay  two  years'  base  salary  and  incentive  compensation  as  severance
compensation.  Mr.  Stevenson   is  required  by   the  agreement  to   maintain
confidentiality  of all Company trade secrets and upon termination is prohibited
from participating in a competing venture for a period of two years.
    
 
STOCK OPTIONS
 
    On December 15, 1992 the Board of Directors and shareholders of the  Company
adopted  the 1992  Stock Option Plan  (the "Plan")  in order to  provide for the
granting of stock purchase options to employees and officers of the Company. The
Plan permits the granting of incentive stock options meeting the requirements of
Section 422A  of  the  Internal Revenue  Code  of  1986, as  amended,  and  also
nonqualified  stock options which do not  meet the requirements of such section.
As amended  by the  Board of  Directors and  approved by  the shareholders,  the
Company  has reserved 625,000 shares  of its Common Stock  for issuance upon the
exercise of options granted under the Plan.  As of the date of this  Prospectus,
the  Company has outstanding  options to purchase an  aggregate of 76,250 shares
under the Plan.
 
    OPTIONS GRANTED FOR THE YEAR ENDED DECEMBER 31, 1995
 
    The following  table  sets forth  certain  information for  the  year  ended
December 31, 1995 as to options granted to the Chief Executive Officer:
 
                       OPTION GRANTS IN FISCAL YEAR 1995
                              (INDIVIDUAL GRANTS)
 
<TABLE>
<CAPTION>
                                                        NUMBER OF      PERCENT OF TOTAL
                                                        SECURITIES      OPTIONS GRANTED    EXERCISE OR
                                                        UNDERLYING       TO EMPLOYEES      BASE PRICE    EXPIRATION
NAME                                                 OPTIONS GRANTED    IN FISCAL YEAR      ($/SHARE)       DATE
- ---------------------------------------------------  ----------------  -----------------  -------------  -----------
<S>                                                  <C>               <C>                <C>            <C>
David E. Stevenson.................................       25,000(1)            51.5%        $    4.00      7/19/2000
</TABLE>
 
- ------------------------
(1) All options are currently exercisable.
 
                                       35
<PAGE>
    AGGREGATE OPTION VALUES AT DECEMBER 31, 1995
 
    The  following table sets forth certain  information at December 31, 1995 as
to options held by the Chief Executive Officer:
 
                AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
                       AND FISCAL YEAR-END OPTION VALUES
 
<TABLE>
<CAPTION>
                                                                                               VALUE OF UNEXERCISED
                                                             NUMBER OF UNEXERCISED             IN-THE-MONEY OPTIONS
                                                              OPTIONS AT 12/31/95                   AT 12/31/95
                                                         ------------------------------  ---------------------------------
NAME                                                     EXERCISABLE    UNEXERCISABLE     EXERCISABLE      UNEXERCISABLE
- -------------------------------------------------------  -----------  -----------------  --------------  -----------------
<S>                                                      <C>          <C>                <C>             <C>
David E. Stevenson.....................................      25,000          --          $   112,500(1)         --
</TABLE>
 
- ------------------------
(1) The value  of exercisable  options is equal  to the  difference between  the
    assumed Price to Public of $8.50 per Share and the option exercise price per
    share multiplied by the number of shares subject to options.
 
INDEMNIFICATION AND WAIVER OF DIRECTOR LIABILITY
 
    The  Minnesota Business Corporation Act provides that officers and directors
of the Company have the right to indemnification from the Company for  liability
arising  out  of  certain actions.  Such  indemnification may  be  available for
liabilities arising in connection with this Offering. Insofar as indemnification
for liabilities arising under the Securities Act may be permitted to  directors,
officers  or persons  controlling the  Company pursuant  to such indemnification
provisions, the Company has been advised  that in the opinion of the  Securities
and  Exchange  Commission  such  indemnification  is  against  public  policy as
expressed in the Securities Act and is therefore unenforceable.
 
    The Company  has adopted  in its  Second Amended  and Restated  Articles  of
Incorporation  a provision  which limits  personal liability  for breach  of the
fiduciary duty of its directors, to the  extent provided by Chapter 302A of  the
Minnesota  Business  Corporation  Act. Such  provision  eliminates  the personal
liability of  directors for  damages  occasioned by  breach of  fiduciary  duty,
except  for liability based  on the director's  duty of loyalty  to the Company,
liability for acts or omissions  not made in good  faith, liability for acts  or
omissions  involving  intentional  misconduct, liability  based  on  payments of
improper dividends, liability based on violations of state securities laws,  and
liability for acts occurring prior to the date such provision was added.
 
                              CERTAIN TRANSACTIONS
 
LOANS FROM DIRECTOR
 
    Steven  King, a director of  the Company, made a loan  to the Company in the
original principal amount of $1.5 million on May 1, 1995 for working capital and
general corporate purposes. The  note issued in connection  with the loan  bears
interest  from the date  of issue at  an annual rate  of 3.75% in  excess of the
"Reference Rate" announced from time to time by First Bank National Association,
and is secured by substantially all  equipment and intellectual property of  the
Company.  The  note is  subject to  periodic payments  of principal  and accrued
interest, and is payable in full, if not sooner paid, on May 10, 1997. The  note
may be prepaid at any time without penalty.
 
    In  connection with this loan,  warrants to purchase up  to 75,000 shares of
Common Stock were issued to Mr. King.  The warrants are exercisable at any  time
after  April 30, 1996,  and expire on May  1, 2003. The  exercise price of these
warrants is $4.00 per share. The  warrants provide for the automatic  adjustment
of  the number  of shares  issuable upon  exercise of  the warrants,  and of the
exercise price,  in certain  events, including  stock dividends,  stock  splits,
reorganizations, reclassifications, and the merger, consolidation or sale of all
or  substantially all of  the assets of  the Company. The  warrants also contain
registration rights which are  substantially similar to  the rights granted  the
holders  of the  Bridge Warrants  described below.  See "Description  of Capital
Stock -- Warrants."
 
                                       36
<PAGE>
    Mr. King  also  made  an unsecured  loan  to  the Company  in  the  original
principal  amount of $200,000 on August 8,  1993 for working capital and general
corporate purposes. The notes issued in  connection with the loan bear  interest
from  the date  of issue at  an annual  rate of 10%.  The notes  mature, and are
payable in full,  on January 5,  1997, but may  be prepaid at  any time  without
penalty. Principal and interest outstanding under the notes may be converted, at
Mr.  King's option, into shares of the  Company's Common Stock at the conversion
rate of $2.00 per share.
 
    In connection with this loan, a warrant to purchase 20,000 shares of  Common
Stock  were issued to Mr. King. The warrant is currently exercisable and expires
on August 8, 1997. The  exercise price of the warrant  is $2.00 per share.  This
warrant is subject to the same terms as the warrants described above.
 
GUARANTY
 
    David   E.   Stevenson,   the  Company's   Chief   Executive   Officer,  has
unconditionally guaranteed all indebtedness of the Company to its principal bank
lender. This guaranty is unlimited.
 
BRIDGE FINANCING
 
    In  October  1995,  the  Company  obtained  bridge  financing  (the  "Bridge
Financing")  which consisted  of the  issuance of  Bridge Notes  in an aggregate
principal amount of $4 million (the  "Bridge Notes") and warrants to  purchasers
of  the Bridge Notes to  purchase 400,000 shares of  the Company's Common Stock,
and a warrant to the Representative  as selling agent to purchase 40,000  shares
of  the Company's Common Stock (collectively, the "Bridge Warrants"). The Bridge
Financing was used for the acquisition of capital equipment and construction  of
facility  improvements. The Bridge Notes bear interest from the date of issue at
a rate of 11.75% per annum, payable at maturity. The Bridge Notes are payable in
full on the earlier of October 15, 1996, or the closing date of this Offering.
 
    The Bridge  Notes are  secured by  substantially all  of the  assets of  the
Company,  subject  to  the  prior  security interests  of  Steven  King  and the
Company's bank lender.  Accordingly, holders of  the Bridge Notes  would have  a
claim  to such  assets in  the event  of the  dissolution or  liquidation of the
Company.
 
    The Bridge Warrants  issued to purchasers  of the Bridge  Notes entitle  the
holders  thereof to purchase one  share of Common Stock  after one year from the
date of issuance,  and expire on  October 15,  2000. The exercise  price of  the
Bridge  Warrants issued to the  purchasers of the Bridge  Notes will be equal to
75% of the Price to Public. The Bridge Warrants issued to the Representative are
exercisable after one year from the  date of issuance, expire October 31,  2000,
and are exercisable at a price equal to the Price to Public.
 
    The  Bridge Warrants provide  for the automatic adjustment  of the number of
shares issuable upon  exercise of the  Warrants, and of  the exercise price,  in
certain   events  including  stock  dividends,  stock  splits,  reorganizations,
reclassifications, and the merger, consolidation or sale of all or substantially
all of the assets of the Company.
 
    The Bridge Warrants grant  certain registration rights  with respect to  the
stock issuable upon exercise of the Bridge Warrants (the "Warrant Stock") in the
event  the Company proposes to register any shares of its Common Stock under the
Securities Act.  These  registration rights  are  not applicable  under  certain
circumstances, including this Offering.
 
    In addition, the holders of more than 50% of the Warrant Stock that has been
or  can be issued upon exercise of the Bridge Warrants have the right to require
the Company to file a registration statement on Form S-3 for the Warrant  Stock,
provided the Company is then eligible to file on such form.
 
                                       37
<PAGE>
                             PRINCIPAL SHAREHOLDERS
 
    The  following table sets  forth as of  the date of  this Prospectus, and as
adjusted to reflect the sale of  the Shares offered hereby, certain  information
regarding  beneficial ownership of the Company's Common Stock by (i) each person
known by  the  Company to  be  the  beneficial owner  of  more than  5%  of  the
outstanding  Common Stock, (ii)  each director of the  Company, (iii) each Named
Executive Officer, and (iv) all executive officers and directors of the  Company
as  a group. The  following information assumes that  the named individuals will
not be purchasing any Shares in this Offering.
 
<TABLE>
<CAPTION>
                                     SHARES
                                  BENEFICIALLY       PERCENT          PERCENT
NAME AND ADDRESS                   OWNED (1)     BEFORE OFFERING   AFTER OFFERING
- --------------------------------  ------------   ---------------   --------------
<S>                               <C>            <C>               <C>
DIRECTORS AND OFFICERS (2):
David E. Stevenson (3)..........    350,042             12.23%             7.84%
Paul T. Fink (4)................     10,000             *                *
Kathleen V. Stevenson (5).......      5,000             *                *
Robert S. Clarke (6)............     10,000             *                *
Steven King (7).................    331,319             10.89%             7.14%
All executive officers and
 directors as a group
 (5 persons) (8)................    706,361             22.84%            15.05%
</TABLE>
 
- ------------------------
*   Less than 1%.
 
(1) Shares  not outstanding  but  deemed beneficially  owned  by virtue  of  the
    individual's  right  to  acquire  them  as of  the  effective  date  of this
    Prospectus, or within 60 days of such date, are treated as outstanding  when
    determining  the  percent of  the class  owned by  such individual  and when
    determining the percent owned by the group. For purposes of calculating  the
    percent  of  class  owned  after  this Offering,  it  was  assumed  that the
    officers, directors and principal shareholders will not be purchasing Shares
    in this Offering. Unless otherwise indicated, each person named or  included
    in the group has sole voting and investment power with respect to the shares
    of Common Stock set forth opposite the shareholder's name.
 
(2)  The address of  each director and  officer of the  Company is 21875 Grenada
    Avenue, Lakeville, Minnesota 55044.
 
(3) Includes  25,000  shares of  Common  Stock issuable  pursuant  to  currently
    exercisable options.
 
(4)  Represents 10,000  shares of  Common Stock  issuable pursuant  to currently
    exercisable options.
 
(5) Represents  5,000 shares  of  Common Stock  issuable pursuant  to  currently
    exercisable options.
 
(6)  Represents 10,000  shares of  Common Stock  issuable pursuant  to currently
    exercisable options.
 
(7) Includes (i) 10,000  shares of Common Stock  issuable pursuant to  currently
    exercisable options, (ii) 95,000 shares of Common Stock issuable pursuant to
    currently  exercisable  warrants,  and (iii)  100,000  shares  issuable upon
    conversion of outstanding promissory notes.
 
(8) Includes 255,000 shares issuable  pursuant to currently exercisable  options
    and warrants, and upon conversion of outstanding promissory notes.
 
                          DESCRIPTION OF CAPITAL STOCK
 
COMMON STOCK
 
    The  Company is authorized  to issue 24,000,000 shares  of Common Stock. The
holders of Common Stock are entitled to one vote per share on all matters to  be
voted  on by shareholders, including  the election of directors.  As of March 1,
1996, there  were 2,837,323  shares  of Common  Stock  outstanding held  by  312
holders of record, exclusive of warrants and options to acquire shares of Common
Stock.
 
                                       38
<PAGE>
    The  holders of Common Stock are entitled to receive such dividends, if any,
as may be declared from time to time by the Board of Directors in its discretion
from funds legally available therefore. The Company is currently prohibited from
paying dividends under the provisions of a credit agreement. Upon liquidation or
dissolution of the Company, the holders of Common Stock are entitled to  receive
pro-rata,  all assets remaining available  for distribution to shareholders. The
shares of  Common Stock  have no  cumulative voting,  preemptive,  subscription,
redemption  or conversion rights.  The outstanding Common  Stock, and the Shares
offered by the  Company in this  Offering, will  be, when issued  and paid  for,
fully paid and nonassessable shares of Common Stock of the Company.
 
    The Company's Second Amended and Restated Articles of Incorporation may only
be amended by resolution adopted by the affirmative vote of not less than 60% of
the  shares  entitled  to vote,  provided  the  amendment does  not  receive the
negative vote of more than  25% of the shares  entitled to vote. This  provision
could have the effect of discouraging an unsolicited takeover of the Company.
 
UNDESIGNATED SHARES
 
    The  Board  of  Directors  has  the  authority  to  issue  up  to  6,000,000
undesignated shares in one  or more series and  to fix the rights,  preferences,
privileges and restrictions granted to or imposed upon any unissued undesignated
shares  and  to  fix  the  number of  shares  constituting  any  series  and the
designations of  such  series,  without  any  further  vote  or  action  by  the
shareholders.  The  Board of  Directors, without  shareholder approval,  has the
power to issue undesignated shares with voting and conversion rights which could
adversely affect the voting power of  the holders of Common Stock. The  issuance
of  undesignated shares may have the effect of delaying, deferring or preventing
a change in  control of  the Company by  way of  a merger, sale  or exchange  of
assets  or a similar transaction. The Company  has no present plans to issue any
undesignated shares.
 
WARRANTS
 
    As of December 31, 1995, the Company had outstanding warrants to purchase  a
total  of 913,600 shares of Common Stock. Of these, warrants to purchase 304,359
shares are exercisable  at $2.00 per  share and expire  between August 1997  and
September 1998; warrants to purchase 169,241 shares are exercisable at $4.00 per
share  and  expire between  November  1998 and  May  2003; warrants  to purchase
400,000 shares are  exercisable at  75% of  the Price  to Public  per share  and
expire  in October 2000; and warrants  to purchase 40,000 shares are exercisable
at the Price to Public per share and expire in October 2000.
 
    The outstanding warrants do not confer any voting or dividend rights or  any
other  rights as a shareholder of the  Company until the warrants have been duly
exercised and payment of the purchase price has been made. The warrants have not
been registered  under the  Securities Act  or any  applicable state  securities
laws.  Neither the warrants nor the Common Stock issued upon the exercise of the
warrants may  be transferred  until  a registration  statement filed  under  the
Securities  Act has  become effective with  regard thereto or  until the Company
receives an opinion of  counsel satisfactory to the  Company and its counsel  to
the effect that such registration is not required.
 
    The  warrants do provide certain  "piggyback" and demand registration rights
to the warrant  holders. If, at  any time  during the periods  the warrants  are
exercisable, the Company proposes to register any shares of its Common Stock for
sale  under the Securities  Act, the Company  is required to  give notice to the
holders of any warrants or warrant stock  and allow such holders to request  the
registration  of  their warrant  stock by  the Company.  This obligation  of the
Company is subject,  however, to  numerous exceptions,  including the  Company's
initial  public offering.  Holders of  more than 50%  of each  series of warrant
stock issued or issuable upon the exercise of the warrants may also demand  that
the Company register the warrant stock if the Company is then eligible to file a
registration  statement  on  Form  S-3 (i.e.,  its  Common  Stock  is registered
pursuant to Section 12(b), 12(g) or 15(d) of the Securities Exchange Act of 1934
(the "Exchange Act"), and has been subject to the requirements of Section 12  or
15(d) of the Exchange Act for at least twelve months, and has filed all material
required to be filed pursuant to Section 13, 14 or 15(d) of the Exchange Act for
at least twelve months).
 
                                       39
<PAGE>
    The  holders of the warrants may be expected to exercise their warrants at a
time when the Company would, in all likelihood, be able to obtain equity capital
by a new offering of its securities on terms more favorable to the Company  than
the  terms of the warrants. This may have the effect of depriving the Company of
opportunities to sell additional equity securities on favorable terms.
 
MINNESOTA ANTITAKEOVER LAW
 
    The Company is governed by the provisions of Sections 302A.671 and  302A.673
of the Minnesota Business Corporation Act. In general, Section 302A.671 provides
that  the shares of a corporation acquired in a "control share acquisition" have
no voting rights  unless voting rights  are approved in  a prescribed manner.  A
"control  share  acquisition"  is  an acquisition,  directly  or  indirectly, of
beneficial ownership  of shares  that  would, when  added  to all  other  shares
beneficially owned by the acquiring person, entitle the acquiring person to have
voting  power of 20% or  more in the election  of directors. In general, Section
302A.673 prohibits a public Minnesota  corporation from engaging in a  "business
combination"  with an "interested shareholder" for  a period of four years after
the  date  of  the  transaction  in  which  the  person  became  an   interested
shareholder, unless the business combination is approved in a prescribed manner.
"Business  combination"  includes mergers,  asset  sales and  other transactions
resulting in a financial benefit  to the interested shareholder. An  "interested
shareholder" is a person who is the beneficial owner, directly or indirectly, of
10%  or  more  of the  corporation's  voting stock  or  who is  an  affiliate or
associate of the corporation and at any time within four years prior to the date
in question was the beneficial owner, directly or indirectly, of 10% or more  of
the corporation's voting stock.
 
    The  Company is also governed  by the provisions of  Section 302A.675 of the
Minnesota Business Corporation Act which,  in general, provides that an  offeror
may  not  acquire shares  of  a public  Minnesota  corporation within  two years
following the last purchase  of shares pursuant to  a takeover offer  (including
purchase,  merger, and  other transactions),  unless the  selling shareholder is
given, at the time  of the acquisition, a  reasonable opportunity to dispose  of
the  shares to the offeror upon substantially equivalent terms as those provided
in the  earlier  takeover  offer,  unless  the  acquisition  is  approved  in  a
prescribed manner.
 
TRANSFER AGENT
 
    American  Stock  Transfer  and  Trust  Company  is  the  Transfer  Agent and
Registrar for the Common Stock.
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
   
    Upon  completion  of  this  Offering,  the  Company  will  have  outstanding
4,837,323  shares of  Common Stock  (assuming no  exercise of  the Underwriters'
over-allotment option). In addition,  the Company will  have (i) 625,000  shares
reserved  for issuance upon the exercise of options issued or to be issued under
the Company's 1992 Stock Option Plan,  (ii) 50,000 shares reserved for  issuance
upon  the exercise  of options  granted to  outside directors  and (iii) 913,600
shares reserved for issuance upon the exercise of outstanding warrants. Of these
shares, the 1,600,000  Shares sold in  this Offering will  be freely  tradeable,
without restriction, under the Securities Act by persons other than "affiliates"
of  the Company (as  defined under the Securities  Act). The remaining 2,837,323
shares of Common Stock (the "Restricted Shares"), held by 312 holders of record,
were acquired in transactions exempt from registration under the Securities  Act
and  may  not  be resold  unless  they are  registered  or sold  pursuant  to an
applicable exemption from registration,  such as Rule  144 under the  Securities
Act.
    
 
    Holders  of restricted securities must comply  with the requirements of Rule
144 in order to sell their shares in the open market. In general, under Rule 144
as  currently  in  effect,  a  person  who  has  beneficially  owned  restricted
securities  for at least  two years, including  any person who  may be deemed an
"affiliate" of  the Company  (as defined  under the  Securities Act),  would  be
entitled, subject to certain conditions, to sell within any three-month period a
number  of shares which  does not exceed the  greater of (i)  one percent of the
Company's then outstanding shares of  Common Stock (approximately 44,373  shares
immediately  after  this Offering,  assuming  no exercise  of  outstanding stock
 
                                       40
<PAGE>
options and warrants) or  (ii) the average weekly  trading volume of the  Common
Stock  in the over-the-counter  market during the  four calendar weeks preceding
such sale.  Sales under  Rule 144  are also  subject to  certain  manner-of-sale
provisions, notice requirements and the availability of public information about
the  Company. Persons who are  not affiliates of the  Company at any time during
the 90 days preceding a sale  and who have beneficially owned restricted  shares
for at least three years would be entitled to sell such shares under Rule 144(k)
without regard to the requirements listed above.
 
   
    Upon effectiveness of this Offering 403,679 of the Restricted Shares will be
eligible  for sale in the public market in compliance with Rule 144(k) under the
Act. Beginning  90  days after  the  date of  this  Prospectus, 365,412  of  the
Restricted  Shares will be eligible for sale  in the public market in compliance
with Rule 144 under  the Act if the  conditions of that rule  have been met.  In
addition,  1,616,870 of the  Restricted Shares held  by existing shareholders of
the Company are subject to lock-up agreements which prohibit their sale or other
disposition for 270  days from  the date of  this Prospectus  without the  prior
written consent of the Representative; and 451,362 of the Restricted Shares held
by  officers and directors of the Company are subject to lock-up agreements that
prohibit their sale  or other disposition  for one  year from the  date of  this
Prospectus without the prior written consent of the Representative.
    
 
   
<TABLE>
<CAPTION>
                                    SHARES
           DAYS AFTER              ELIGIBLE
            DATE OF                   FOR
        THIS PROSPECTUS           FUTURE SALE                     COMMENT
        ----------------          -----------  ----------------------------------------------
<S>                               <C>          <C>
Upon Effectiveness..............    2,000,000  Freely tradable, shares sold in this Offering.
Upon Effectiveness..............      403,679  Rule 144(k) (shares not subject to 270-day
                                               Lockup).
90 Days.........................      365,412  Rule 144 and Rule 701 (outstanding shares not
                                               subject to 270-day Lockup).
270 Days........................    1,616,870  Lockup released. Outstanding shares salable
                                               under Rule 144, 144(k) and Rule 701.
365 Days........................      451,362  Lockup released. Outstanding shares salable
                                               under Rule 144, 144(k) and Rule 701.
</TABLE>
    
 
    Prior to this Offering, there has been no market for the Common Stock of the
Company,  and no  predictions can  be made  regarding the  effect, if  any, that
market sales of shares or the availability  of shares for sale will have on  the
market  price prevailing from  time to time.  Nevertheless, sales of substantial
amounts of the Common Stock of the Company in the public market could  adversely
affect  prevailing  market  prices and  impair  the Company's  ability  to raise
capital at that time through the sale of its equity securities.
 
                                       41
<PAGE>
                                  UNDERWRITING
 
    The Underwriters  named  below,  for  which John  G.  Kinnard  and  Company,
Incorporated  is acting as representative (the "Representative"), have severally
agreed, subject to the terms and  conditions of the Underwriting Agreement  with
the  Company to purchase  from the Company the  1,600,000 Shares offered hereby.
The number of Shares that each Underwriter  has agreed to purchase is set  forth
opposite its name below:
 
   
<TABLE>
<CAPTION>
UNDERWRITER                                                                            NUMBER OF SHARES
- -------------------------------------------------------------------------------------  -----------------
<S>                                                                                    <C>
John G. Kinnard and Company, Incorporated............................................
 
    Total............................................................................        2,000,000
                                                                                       -----------------
                                                                                       -----------------
</TABLE>
    
 
   
    The  Underwriting Agreement provides  that the several  Underwriters will be
obligated to purchase all  of the Shares offered  hereby, if any are  purchased.
The  obligation of the  Underwriters to purchase  the Shares is  several and not
joint meaning that,  subject to the  terms of the  Underwriting Agreement,  each
Underwriter  is  obligated  to purchase  only  the  number of  Shares  set forth
opposite its name.
    
 
    The Underwriters propose to offer the Shares  to the public at the Price  to
Public  set forth on  the cover page of  this Prospectus and  to dealers at such
price less a concession not in excess of $      per share. The Underwriters  may
allow,  and such dealers may reallow, a  concession not in excess of $       per
share to certain other brokers and  dealers. After the initial public  offering,
the  Price  to  Public,  concession  and  reallowance  may  be  changed  by  the
Representative.
 
   
    The Company has granted  the Underwriters an  option, exercisable within  30
days  after the date of this Prospectus, to purchase up to an additional 300,000
Shares at the Price to Public, less the Underwriting Discount shown on the cover
page of this Prospectus. The Underwriters may exercise such option only for  the
purpose  of  covering any  over-allotments  in the  sale  of the  Shares offered
hereby.
    
 
    The Company  has  agreed to  reimburse  the Representative  for  accountable
expenses  which  are  incurred  by the  Representative  in  connection  with the
Offering.  Such  accountable  expenses,  which  will  include  legal  fees   and
disbursements of counsel to the Representative, may not exceed $50,000, of which
$10,000 has been paid.
 
    The   Company  has  agreed  to  sell  to  the  Representative,  for  nominal
consideration, a warrant to purchase up  to 160,000 shares of Common Stock  (the
"Representative's  Warrant"). The  Representative's Warrant may  be exercised in
whole or in part commencing twelve months after the date of this Prospectus  and
for a period of four years thereafter, at an exercise price equal to 120% of the
Price  to Public. During the term of the Representative's Warrant, it may not be
transferred, sold, assigned or hypothecated except to officers and employees who
are shareholders of  the Representative. The  Representative's Warrant  contains
anti-dilution provisions providing for appropriate adjustments on the occurrence
of  certain events, and contains customary demand and participatory registration
rights. Any profits realized by the Representative upon the sale of such warrant
or the securities  issuable upon exercise  thereof may be  deemed to  constitute
additional underwriting compensation.
 
                                       42
<PAGE>
    The  Representative has  informed the Company  that the  Underwriters do not
intend to confirm sales  to any account over  which they exercise  discretionary
authority.
 
    The  Underwriting Agreement provides  for reciprocal indemnification between
the Company,  the  Underwriters  and their  controlling  persons  against  civil
liabilities  in connection  with the  Offering, including  liabilities under the
Securities Act. Insofar  as indemnification  for liabilities  arising under  the
Securities  Act  may  be permitted  pursuant  to the  foregoing  provisions, the
Company has been informed  that, in the opinion  of the Securities and  Exchange
Commission,  such indemnification is against public  policy as expressed in such
Act and is therefore unenforceable.
 
    In connection  with  the Bridge  Financing,  the Representative  received  a
commission  of $200,000  and a warrant  to purchase  up to 40,000  shares of the
Company's Common Stock  at an exercise  price per  share equal to  the Price  to
Public.
 
    Prior  to this  Offering, there  has been no  public trading  market for the
Common Stock.  The  initial  public  offering  price  of  the  Shares  has  been
determined by negotiations between the Company and the Representative. Among the
factors  considered in such negotiations  were the prevailing market conditions,
estimates of the business potential of the Company, the results of operations of
the Company in recent periods and other factors deemed to be relevant.
 
    The foregoing  is  a  brief  summary  of  the  material  provisions  of  the
Underwriting  Agreement and the Representative's Warrant and does not purport to
be a  complete  statement  of  their  terms  and  conditions.  The  Underwriting
Agreement  and the Representative's Warrant have been filed as an exhibit to the
Registration Statement of which this Prospectus is a part.
 
                                 LEGAL MATTERS
 
    The validity of  the issuance  of the Common  Stock offered  hereby will  be
passed  upon  for the  Company by  Henson  & Efron,  P.A., 1200  Title Insurance
Building, 400 Second  Avenue South,  Minneapolis, Minnesota 55401,  and for  the
Underwriters  by  Oppenheimer Wolff  & Donnelly,  Suite  3400, 45  South Seventh
Street, Minneapolis, Minnesota 55402.
 
                                    EXPERTS
 
    The Financial Statements of  the Company as of  December 31, 1995 and  1994,
and  for each  of the years  then ended,  included in this  Prospectus have been
audited by  Deloitte &  Touche LLP,  independent auditors,  as stated  in  their
report   appearing  herein  (which  report  includes  an  explanatory  paragraph
referring to substantial  doubt as  to the Company's  ability to  continue as  a
going  concern), and have been  so included in reliance  upon the report of such
firm given upon their authority as experts in accounting and auditing.
 
                             AVAILABLE INFORMATION
 
    The Company  has filed  with  the Securities  and Exchange  Commission  (the
"Commission")  a Registration  Statement on Form  SB-2 under  the Securities Act
with respect to the Shares offered hereby. For further information with  respect
to  the Company and the Shares, reference is made to such Registration Statement
and exhibits filed as a part thereof. Statements contained in this Prospectus as
to the contents of any contract, agreement or other document referred to are not
necessarily complete. With respect to each such contract, agreement or  document
filed  as an  exhibit to  the Registration Statement,  reference is  made to the
exhibit for a more complete description of the matter involved. The Registration
Statement and exhibits may be inspected without charge, and copied at prescribed
rates, at the Public Reference Section of the Commission at Room 1024, 450 Fifth
Street, N.W., Washington, D.C. 20549, and  at the following regional offices  of
the  Commission: New York Regional Office, 7 World Trade Center, Suite 1300, New
York, New York  10048, and Chicago  Regional Office, Citicorp  Center, 500  West
Madison, Suite 1400, Chicago, Illinois 60661.
 
                                       43
<PAGE>
    The  Company  intends  to  distribute  to  its  shareholders  annual reports
containing audited financial statements and interim reports containing unaudited
financial statements. The Company will provide without charge to each person  to
whom  a copy of  this Prospectus is  delivered, upon oral  or written request of
such person, a copy of any or all documents which are incorporated by  reference
in  this Prospectus, other than exhibits to such documents (unless such exhibits
are specifically incorporated  by reference). Written  requests for such  copies
should  be  directed  to  Kathleen V.  Stevenson,  Corporate  Secretary, Photran
Corporation,  21875  Grenada  Avenue,  Lakeville,  Minnesota  55044.   Telephone
requests may be directed to the Company at (612) 469-4880.
 
                                       44
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                            PAGE
                                                                            ----
<S>                                                                         <C>
Independent Auditors' Report..............................................   F-2
Balance Sheets as of December 31, 1994 and 1995 and March 31, 1996
 (unaudited)..............................................................   F-3
Statements of Operations for the Years ended December 31, 1994 and 1995
 and the three months ended March 31, 1995 and 1996 (unaudited)...........   F-4
Statements of Shareholders' Equity for the Years ended December 31, 1994
 and 1995 and the three months ended March 31, 1996 (unaudited)...........   F-5
Statements of Cash Flows for the Years ended December 31, 1994 and 1995
 and the three months ended March 31, 1995 and 1996 (unaudited)...........   F-6
Notes to Financial Statements for the Years ended December 31, 1994 and
 1995 and the three months ended March 31, 1995 and 1996 (unaudited)......   F-7
</TABLE>
 
                                      F-1
<PAGE>
    THE  ACCOMPANYING  CONSOLIDATED  FINANCIAL  STATEMENTS  GIVE  EFFECT  TO THE
COMPLETION OF THE ONE FOR TWO  REVERSE STOCK SPLIT OF THE COMPANY'S  OUTSTANDING
COMMON  STOCK WHICH WILL TAKE  PLACE ON THE EFFECTIVE  DATE OF THE OFFERING. THE
FOLLOWING REPORT IS IN THE FORM WHICH WILL BE FURNISHED BY DELOITTE & TOUCHE LLP
UPON THE COMPLETION  OF THE  REVERSE STOCK  SPLIT OF  THE COMPANY'S  OUTSTANDING
COMMON  STOCK DESCRIBED IN NOTE 7 TO  THE FINANCIAL STATEMENTS AND ASSUMING THAT
FROM MARCH 15, 1996 TO THE DATE OF SUCH COMPLETION NO OTHER MATERIAL EVENTS HAVE
OCCURRED THAT WOULD  AFFECT THE  ACCOMPANYING FINANCIAL  STATEMENTS OR  REQUIRED
DISCLOSURE THEREIN.
 
                          INDEPENDENT AUDITORS' REPORT
 
Board of Directors and Shareholders
Photran Corporation
Lakeville, Minnesota
 
    We  have audited the accompanying balance sheets of Photran Corporation (the
Company) as  of  December  31, 1994  and  1995  and the  related  statements  of
operations, shareholders' equity, and cash flows for the years then ended. These
financial  statements are  the responsibility  of the  Company's management. Our
responsibility is to express an opinion  on these financial statements based  on
our audits.
 
    We  conducted  our audits  in  accordance with  generally  accepted auditing
standards. Those standards require that we plan and perform the audit to  obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also  includes
assessing  the  accounting principles  used  and significant  estimates  made by
management, as well as evaluating the overall financial statement  presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In  our opinion, such  financial statements present  fairly, in all material
respects, the financial position of Photran Corporation as of December 31,  1994
and 1995 and the results of its operations and its cash flows for the years then
ended, in conformity with generally accepted accounting principles.
 
    The  accompanying  financial  statements  have  been  prepared  assuming the
Company will  continue  as a  going  concern. As  discussed  in Note  1  to  the
financial  statements,  the  Company's accumulated  losses  of  $3,436,861 since
incorporation, negative cash  flows from operating  activities of $3,239,173  in
fiscal  1995 and  negative working  capital of  $3,216,717 at  December 31, 1995
raise substantial  doubt about  the Company's  ability to  continue as  a  going
concern.  Management's plans concerning  these matters are  described in Note 1.
These financial statements do not include any adjustments that might result from
the outcome of this uncertainty.
 
Minneapolis, Minnesota
March 15, 1996
 
                                      F-2
<PAGE>
                              PHOTRAN CORPORATION
                                 BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                             DECEMBER 31
                                                                    -----------------------------
                                                                        1994            1995
                                                                    -------------  --------------  MARCH 31, 1996
                                                                                                   --------------
                                                                                                    (UNAUDITED)
<S>                                                                 <C>            <C>             <C>
                                         ASSETS (Note 4)
 
CURRENT ASSETS:
  Cash and cash equivalents.......................................  $     173,160  $    1,532,361  $      299,018
  Accounts receivable.............................................        171,740         808,549         648,446
  Inventory.......................................................        352,380       1,420,048       1,218,895
  Equipment held for sale (Note 8)................................        596,283       3,203,314       4,193,096
  Prepaid expenses................................................         13,945          14,527          54,178
                                                                    -------------  --------------  --------------
    Total current assets..........................................      1,307,508       6,978,799       6,413,633
PROPERTY AND EQUIPMENT, net (Note 3)..............................      4,815,870       6,995,381       7,754,304
DEFERRED FINANCING COSTS (Note 2).................................                        191,990         131,990
DEFERRED OFFERING COSTS (Note 2)..................................                                        111,511
OTHER ASSETS (Note 2).............................................         26,485          26,485          26,485
                                                                    -------------  --------------  --------------
                                                                    $   6,149,863  $   14,192,655  $   14,437,923
                                                                    -------------  --------------  --------------
                                                                    -------------  --------------  --------------
 
                              LIABILITIES AND SHAREHOLDERS' EQUITY
 
CURRENT LIABILITIES:
  Bridge financing (Note 4).......................................                 $    4,000,000  $    4,000,000
  Line of credit (Note 4).........................................                      1,916,480       1,966,480
  Line of credit (Note 4).........................................                        225,000         225,000
  Current portion of other long-term debt, notes payable, and
   capital lease obligations (Note 4).............................  $     122,164       1,041,547       1,290,864
  Accounts payable................................................        645,040       1,195,833       1,422,527
  Accrued expenses................................................        124,855         261,221         373,914
  Customer advances (Note 8)......................................      1,555,435       1,555,435       1,555,435
                                                                    -------------  --------------  --------------
    Total current liabilities.....................................      2,447,494      10,195,516      10,834,220
LONG-TERM DEBT (Note 4)...........................................        528,076         762,783         290,318
COMMITMENTS AND CONTINGENCIES (Note 6)
SHAREHOLDERS' EQUITY (Notes 4 and 7):
  Undesignated stock, no par value, 6,000,000 shares authorized,
   no shares issued...............................................
  Common stock, no par value, 24,000,000 shares authorized,
   2,834,823, 2,837,323 and 2,837,323 shares issued and
   outstanding, respectively......................................      6,661,167       6,671,217       6,671,217
  Accumulated deficit.............................................     (3,486,874)     (3,436,861)     (3,357,832)
                                                                    -------------  --------------  --------------
    Total shareholders' equity....................................      3,174,293       3,234,356       3,313,385
                                                                    -------------  --------------  --------------
                                                                    $   6,149,863  $   14,192,655  $   14,437,923
                                                                    -------------  --------------  --------------
                                                                    -------------  --------------  --------------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-3
<PAGE>
                              PHOTRAN CORPORATION
                            STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                                         THREE MONTHS ENDED
                                                                FOR THE YEARS ENDED          MARCH 31,
                                                              -----------------------  ----------------------
                                                                 1994         1995        1995        1996
                                                              -----------  ----------  ----------  ----------
                                                                                            (UNAUDITED)
<S>                                                           <C>          <C>         <C>         <C>
REVENUES (Note 2)...........................................  $   914,736  $3,362,818  $  217,595  $1,137,950
COST OF SALES...............................................    1,016,628   2,048,522      96,933     676,782
                                                              -----------  ----------  ----------  ----------
    Gross (loss) profit.....................................     (101,892)  1,314,296     120,662     461,168
OPERATING EXPENSES:
  Process and product development...........................      647,639     353,636      72,451      84,657
  General and administrative................................      418,938     462,686      97,893     164,479
  Selling and marketing.....................................      174,326     161,531      28,026      72,165
                                                              -----------  ----------  ----------  ----------
    Total operating expenses................................    1,240,903     977,853     198,370     321,301
                                                              -----------  ----------  ----------  ----------
(LOSS) INCOME FROM OPERATIONS...............................   (1,342,795)    336,443     (77,708)    139,867
INTEREST EXPENSE, net.......................................      (62,240)   (286,430)    (17,323)    (60,838)
                                                              -----------  ----------  ----------  ----------
NET (LOSS) INCOME...........................................  $(1,405,035) $   50,013  $  (95,031) $   79,029
                                                              -----------  ----------  ----------  ----------
                                                              -----------  ----------  ----------  ----------
NET (LOSS) INCOME PER COMMON AND COMMON EQUIVALENT SHARE
 (Note 2)...................................................  $     (0.47) $     0.02  $    (0.03) $     0.02
                                                              -----------  ----------  ----------  ----------
                                                              -----------  ----------  ----------  ----------
WEIGHTED AVERAGE NUMBER OF COMMON AND COMMON EQUIVALENT
 SHARES OUTSTANDING (Note 2)................................    3,015,640   3,334,114   3,334,114   3,334,114
                                                              -----------  ----------  ----------  ----------
                                                              -----------  ----------  ----------  ----------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-4
<PAGE>
                              PHOTRAN CORPORATION
                       STATEMENTS OF SHAREHOLDERS' EQUITY
                   FOR THE YEARS ENDED DECEMBER 31, 1994 AND
               1995 AND FOR THE THREE MONTHS ENDED MARCH 31, 1996
 
<TABLE>
<CAPTION>
                                                                    COMMON STOCK
                                                             --------------------------   ACCUMULATED        TOTAL
                                                               SHARES        AMOUNT         DEFICIT          EQUITY
                                                             -----------  -------------  --------------  --------------
<S>                                                          <C>          <C>            <C>             <C>
BALANCE AT DECEMBER 31, 1993...............................    2,571,998  $   5,747,486  $   (2,081,839) $    3,665,647
  Common stock issued -- January-March 1994, net of
   offering costs of $137,618..............................      262,825        913,681                         913,681
  Net loss.................................................                                  (1,405,035)     (1,405,035)
                                                             -----------  -------------  --------------  --------------
BALANCE AT DECEMBER 31, 1994...............................    2,834,823      6,661,167      (3,486,874)      3,174,293
  Common stock issued upon exercise of options -- July
   1995....................................................        2,500         10,050                          10,050
  Net income...............................................                                      50,013          50,013
                                                             -----------  -------------  --------------  --------------
BALANCE AT DECEMBER 31, 1995...............................    2,837,323      6,671,217      (3,436,861)      3,234,356
  Net income (unaudited)...................................                                      79,029          79,029
                                                             -----------  -------------  --------------  --------------
BALANCE AT MARCH 31, 1996 (UNAUDITED)......................    2,837,323  $   6,671,217  $   (3,357,832) $    3,313,385
                                                             -----------  -------------  --------------  --------------
                                                             -----------  -------------  --------------  --------------
</TABLE>
 
                       See notes to financial statements.
 
                                      F-5
<PAGE>
                              PHOTRAN CORPORATION
                            STATEMENTS OF CASH FLOWS
 
   
<TABLE>
<CAPTION>
                                                                                                              THREE MONTHS ENDED
                                                                                    FOR THE YEARS ENDED            MARCH 31,
                                                                                  ------------------------  -----------------------
                                                                                     1994         1995         1995        1996
                                                                                  -----------  -----------  ----------  -----------
                                                                                                                  (UNAUDITED)
<S>                                                                               <C>          <C>          <C>         <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net (loss) income.............................................................  $(1,405,035) $    50,013  $  (95,031) $    79,029
  Adjustments to reconcile net (loss) income to cash provided by (used in)
   operating activities:
    Depreciation and amortization -- property and equipment.....................      219,748      295,324      36,531      118,993
    Interest expense associated with amortization of deferred financing costs...                    40,421                   60,000
    Changes in current assets and liabilities:
      (Increase) decrease in:
        Accounts receivable.....................................................      176,378     (636,809)    159,255      160,103
        Inventory...............................................................      221,828   (1,067,668)   (865,249)     201,153
        Equipment held for sale.................................................     (596,283)  (2,607,031)    (28,725)    (989,782)
        Prepaid expenses........................................................       (5,345)        (582)    (20,540)     (39,651)
      Increase (decrease) in:
        Accounts payable........................................................      246,888      550,793   1,234,509      226,694
        Accrued expenses........................................................      (19,129)     136,366      10,037      112,693
        Customer advances.......................................................    1,530,435
                                                                                  -----------  -----------  ----------  -----------
          Cash provided by (used in) operating activities.......................      369,485   (3,239,173)    410,713      (70,768)
CASH FLOWS FROM INVESTING ACTIVITIES:
  Property and equipment additions..............................................   (1,983,422)  (2,474,835)   (697,201)    (877,916)
  Deferred offering costs.......................................................                                           (111,511)
  Other assets..................................................................        1,516
                                                                                  -----------  -----------  ----------  -----------
          Cash used in investing activities.....................................   (1,981,906)  (2,474,835)   (697,201)    (989,427)
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from bridge financing, net of financing fees of $222,286 in fiscal
   1995.........................................................................                 4,000,000
  Proceeds from lines of credit.................................................                 2,141,480                   50,000
  Proceeds from notes payable and long-term debt, net of financing fees of
   $10,126 in fiscal 1995.......................................................       45,348    1,411,692     213,520       40,083
  Payments of notes payable and long-term debt..................................      (81,174)    (490,013)    (36,268)    (263,231)
  Common stock issued...........................................................      913,681       10,050
                                                                                  -----------  -----------  ----------  -----------
          Cash provided by (used in) financing activities.......................      877,855    7,073,209     177,252     (173,148)
                                                                                  -----------  -----------  ----------  -----------
(DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS................................     (734,566)   1,359,201    (109,296)  (1,233,343)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD................................      907,726      173,160     173,160    1,532,361
                                                                                  -----------  -----------  ----------  -----------
CASH AND CASH EQUIVALENTS AT END OF PERIOD......................................  $   173,160  $ 1,532,361  $   63,864  $   299,018
                                                                                  -----------  -----------  ----------  -----------
                                                                                  -----------  -----------  ----------  -----------
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION AND NONCASH FINANCING
 ACTIVITIES:
  Cash paid for interest........................................................  $    48,710  $   146,492  $   14,611  $    66,467
  Acquisition of property by capital lease......................................       45,348      128,466      13,520       40,083
</TABLE>
    
 
                       See notes to financial statements.
 
                                      F-6
<PAGE>
                              PHOTRAN CORPORATION
 
                         NOTES TO FINANCIAL STATEMENTS
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
1.  BUSINESS AND MANAGEMENT'S PLANS REGARDING OPERATING LOSSES AND
    LIQUIDITY
    Photran  Corporation (the Company) is engaged in the manufacture and sale of
products incorporating thin film coatings which consist of microscopic layers of
metal and metal oxide materials. Materials coated with these thin film  coatings
are components in a wide variety of products, including liquid crystal displays,
glare  reducing/radiation blocking  filters for  use with  computer monitors and
television screens and anti-reflective glass. To date, the Company's sales  have
consisted  of coated glass products to a  limited number of companies located in
Asian countries for use in liquid crystal displays.
 
    Upon incorporation on May 3, 1991, the principal activities performed by the
Company were  product development,  marketing,  financing, and  construction  of
production  equipment.  During  the  latter half  of  fiscal  1993,  the Company
commenced pilot  production  and  sales  of twisted  nematic  indium  tin  oxide
(TN-ITO) electrically conductive glass products. In fiscal 1994, management made
the strategic decision to suspend pilot production and to redesign the Company's
production  equipment  and  facility  to enable  it  to  produce anti-reflective
coatings and to increase the efficiency of the equipment.
 
    The Company resumed  operations of  its manufacturing  facility during  July
1995.  However,  the  manufacturing facility  has  been operational  for  only a
limited number of  available operating  days since such  time to  allow for  the
simultaneous  modification  of  the  facility for  production  of  super twisted
nematic  glass  (STN-ITO),  anti-reflection   and  enhanced  reflection   mirror
products.
 
    During  fiscal 1994, the Company entered into  a joint venture and will sell
to the venture a coating system and technology to enable the venture to  produce
and  market TN-ITO  glass products.  See Note 8  for further  description of the
terms of the sale and joint venture agreement.
 
    The  Company  has  incurred  accumulated  losses  since  its  inception   of
$3,357,832.   The  Company  had  negative  working  capital  of  $3,216,717  and
$4,420,587 at December 31, 1995 and March 31, 1996, respectively, which includes
approximately $6.2 million of bridge financing and lines of credit due in  1996.
The Company incurred negative cash flows from operating activities of $3,239,173
and  $70,768 for  the year ended  December 31,  1995 and the  three month period
ended March 31, 1996,  respectively. The Company had  cash outlays for  property
and  equipment additions  of $1,983,422, $2,474,835  and $877,916  for the years
ended December 31, 1994 and 1995, and for the three month period ended March 31,
1996, respectively.
 
   
    These factors, among others, indicate the Company may be unable to  continue
as  a going concern for a reasonable  period of time. The Company's continuation
as a going concern is dependent on  its ability to meet its obligations as  they
become  due. The Company is attempting to sell approximately 2,000,000 shares of
common stock  in a  public offering  to raise  net proceeds  to the  Company  of
approximately  $15 million (Note 9). If the public offering is not completed, it
will become necessary for the Company to pursue financing from other sources  in
order  to pay its current obligations,  including $6,141,480 of bridge financing
and lines of credit due in 1996.
    
 
    The financial  statements do  not include  any adjustments  relating to  the
recoverability  and classification of recorded asset  amounts or the amounts and
classification of  liabilities that  might be  necessary should  the Company  be
unable  to continue as a going  concern. Management anticipates that the Company
will complete its sale of the coating  system to the joint venture during  1996.
Management  anticipates  receipt  of  $3,300,000 upon  shipment  of  the coating
system. Such proceeds will  be used to repay  the related line-of-credit  which,
during  the three months ended  March 31, 1996, was extended  and is now due May
31,  1996.  Collection   of  the   final  $600,000   of  the   sales  price   is
 
                                      F-7
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
1.  BUSINESS AND MANAGEMENT'S PLANS REGARDING OPERATING LOSSES AND
    LIQUIDITY (CONTINUED)
expected  during the latter half  of 1996 if the  coating system meets all final
acceptance tests at  the joint venture  site. Management believes  substantially
all  modifications to  its manufacturing facility  will be  completed during the
first half  of fiscal  1996. Management  believes that  these improvements  will
increase  production efficiency and allow the  Company to commence production of
higher margin products which will  result in improved operating results.  During
the last six months of fiscal 1995, coated glass production operating activities
provided  positive  cash flows.  Management believes  that the  Company's coated
glass production operating  activities will  continue to  provide positive  cash
flows  in future  periods. If the  public offering is  not completed, management
plans to pursue additional financing with various lending institutions. However,
such financing is  currently not in  place and  there can be  no assurance  that
additional  financing  will be  available or  that  the Company's  business will
develop as anticipated by management.
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
    UNAUDITED FINANCIAL STATEMENTS  The Company's balance sheet as of March  31,
1996,  statements of operations and cash flows  for the three months ended March
31, 1995 and 1996, statement of shareholders' equity for the three months  ended
March  31, 1996 and the interim information in the notes to financial statements
as of March 31, 1996 and for the three months ended March 31, 1995 and 1996  are
unaudited.  In the  opinion of  management, such  unaudited financial statements
include  all  adjustments,  consisting  of  only  normal,  recurring   accruals,
necessary  for a  fair presentation thereof.  The results of  operations for any
interim period are not necessarily indicative of the results for the year.
 
    MANAGEMENT'S USE OF ESTIMATES   The preparation  of financial statements  in
conformity  with generally accepted accounting principles requires management to
make estimates and assumptions  that affect the reported  amounts of assets  and
liabilities  and disclosure of contingent assets  and liabilities at the date of
the financial  statements and  the  reported amounts  of revenues  and  expenses
during the reporting period. Actual results could differ from those estimates.
 
    REVENUE  RECOGNITION  Revenues  are recognized upon  shipment of products to
customers.
 
    REVENUE FROM SIGNIFICANT CUSTOMERS  Substantially all of the Company's sales
for the years ended December 31, 1994 and 1995 and three months ended March  31,
1995  and 1996 were to customers located  in Asian countries. The percentages of
total revenue from sales  to customers in  excess of 10% of  the total for  each
period were as follows:
 
<TABLE>
<CAPTION>
                                                               THREE MONTHS
                                              YEAR ENDED       ENDED MARCH
                                             DECEMBER 31,          31,
                                             ------------      ------------
                                             1994    1995      1995    1996
                                             ----    ----      ----    ----
          <S>                                <C>     <C>       <C>     <C>
          Customer A....................      26%     57%      --       71%
          Customer B....................     --       28       --      --
          Customer C....................      32     --        --      --
          Customer D....................      14     --        --      --
          Customer E....................     --      --         92%    --
</TABLE>
 
    PROCESS  AND  PRODUCT  DEVELOPMENT   Expenditures  for  process  and product
development include research  and development expense  and additionally  include
start-up  manufacturing cost of  $202,159 in 1994  associated with manufacturing
test runs. Expenditures for research and development of
 
                                      F-8
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
products and  manufacturing processes  are expensed  as incurred.  Research  and
development  expense was $445,480,  $353,636, $72,451 and  $84,657 for the years
ended December 31, 1994 and  1995, and the three  month periods ended March  31,
1995 and 1996, respectively.
 
    CASH  AND  CASH  EQUIVALENTS    The  Company  considers  all  highly  liquid
investments purchased with an  original maturity of three  months or less to  be
cash equivalents.
 
    ACCOUNTS  RECEIVABLE  The Company's accounts receivable at December 31, 1994
and 1995 and March 31, 1996 are due primarily from foreign customers located  in
Asian countries. In 1994 and 1995, the Company has required the establishment of
irrevocable letters of credit in its favor from approved banks prior to shipment
of  the products  underlying these  accounts receivable  in order  to reduce its
exposure to bad debts. At March  31, 1996, $292,000 of accounts receivable  were
not  secured by letters of  credit. These accounts were  due from customers with
whom the Company  has had a  creditor relationship for  over one year.  Accounts
receivable  include  amounts due  from one  customer  of $167,000,  $240,000 and
$150,000 at December 31,  1994 and 1995, and  March 31, 1996, respectively,  and
$544,000  and $308,000 due from a second customer at December 31, 1995 and March
31, 1996, respectively. The Company's sales are denominated in U.S. dollars.
 
    INVENTORY   Inventory is  valued at  the lower  of cost,  determined on  the
first-in,   first-out  method,  or  market  value.  Inventory  consists  of  the
following:
 
<TABLE>
<CAPTION>
                                           AT DECEMBER 31
                                     --------------------------  AT MARCH 31,
                                        1994          1995           1996
                                     -----------  -------------  -------------
<S>                                  <C>          <C>            <C>
Finished goods - glass.............  $   187,909
Raw materials and supplies.........      164,471  $   1,420,048  $   1,218,895
                                     -----------  -------------  -------------
                                     $   352,380  $   1,420,048  $   1,218,895
                                     -----------  -------------  -------------
                                     -----------  -------------  -------------
</TABLE>
 
    Inventories  are  periodically  reviewed  for  obsolescence,  overstock  and
quality  defects by physical examination and  by comparing quantities on hand to
forecasted future  requirements.  Items  considered obsolete  or  overstock  are
written off. Items with quality defects are valued at net realizable value.
 
    The  Company  purchases substantially  all of  its raw  glass, which  is the
majority of the raw materials  used in the manufacture  of its products, from  a
single source supplier. The Company believes that acceptable alternative sources
of this material are available.
 
    EQUIPMENT  HELD FOR SALE   Equipment held  for sale in  association with the
joint venture described in Note  8 is carried at  cost. Equipment held for  sale
includes  $85,000  and  $178,000  of interest  capitalized  for  the  year ended
December 31, 1995 and the three month period ended March 31, 1996, respectively.
 
    CUSTOMER  ADVANCES    Customer  advances  represent  amounts  received  from
customers  primarily  related  to  Equipment  Held  for  Sale.  Revenue  will be
recognized upon successful completion of  the Company's obligations under  these
contracts.
 
    PROPERTY  AND EQUIPMENT   Property and equipment are  recorded at cost. Cost
includes expenditures for new equipment  and incremental labor and direct  costs
incurred  for construction  of equipment  modifications. Property  and equipment
includes $30,000 of interest capitalized during the three months ended March 31,
1996.
 
                                      F-9
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    Property, other than manufacturing  process equipment, is depreciated  using
the  straight-line method  over estimated  useful lives  of three  to ten years.
Manufacturing process  equipment is  depreciated using  the  units-of-production
method,  with  such equipments'  useful life  estimated  to be  approximately 10
years. Amortization of equipment under capital leases is over the shorter of the
lease term or the economic useful life and is recorded as depreciation  expense.
Depreciation  is not recorded on property not yet placed in service. Repairs and
maintenance are charged to expense as incurred.
 
    DEFERRED FINANCING  COSTS   Deferred financing  costs consist  primarily  of
underwriting  and  legal  fees  associated  with  the  issuance  of  bridge note
financing in fiscal 1995 (Note 4).  Amortization of deferred financing costs  is
recorded  using the  straight line  method over the  life of  the related notes.
Accumulated amortization was $40,000 at December 31, 1995 and $100,000 at  March
31, 1996.
 
    DEFERRED   OFFERING  COSTS    Deferred  offering  costs  consist  of  legal,
accounting and other costs associated with the Company's proposed initial public
offering of  common stock  (see Note  9).  Such costs  will be  reclassified  to
shareholders'  equity upon the successful completion  of an offering. Such costs
will be expensed if an offering of common stock is not completed.
 
    OTHER  ASSETS    The   Company  has  obtained   patent  rights  to   various
manufacturing  processes and  product technology.  The founding  shareholder has
transferred key manufacturing and product  technology to the Company,  including
patent  rights, for  the sum of  $1. In  addition, the Company  has purchased an
exclusive license for certain related technology from Applied Elastomerics, Inc.
The consideration  paid  to  Applied  Elastomerics, Inc.  of  $13,000  has  been
capitalized  and will be amortized upon commencement of production over the term
of the license agreement. The Company has agreed to pay royalties of 5 - 7 %  of
the  net  sales price  of products  relating to  the Applied  Elastomerics, Inc.
technology through May  1996. The license  expires in May  1996. The license  is
subject  to certain  renewal options  and the  Company is  currently negotiating
renewal of the license. However, there is no assurance that the license will  be
renewed.  The Company's minimum annual royalty  obligation is $80,000 and begins
at the time the Company commences sales of products subject to this license.  As
of  December 31, 1995 and March 31, 1996, there were no product sales subject to
royalty.
 
    IMPAIRMENT  OF  LONG-LIVED  ASSETS    Management  periodically  reviews  the
carrying  value of property and equipment  for potential impairment by comparing
its carrying value to the estimated  undiscounted future cash flows expected  to
result  from the use  of these assets.  Should the sum  of the related, expected
future net cash flows be less than the carrying value, an impairment loss  would
be  recognized. An impairment loss would be  measured by the amount by which the
carrying value  of the  asset exceeds  the fair  value of  the asset.  To  date,
management  has  determined  that  no impairment  of  these  assets  exists. The
technology used in the Company's manufacturing equipment may be subject to rapid
technological change  within  time  frames  not  currently  anticipated  by  the
Company. It is reasonably possible that the Company's estimate of recoverability
of the carrying value of its equipment will change in the future.
 
    INCOME  TAXES   The Company calculates  income taxes in  accordance with the
provisions of  Statement  of  Financial Accounting  Standards  (SFAS)  No.  109,
Accounting  for  Income Taxes.  SFAS  No. 109  requires  an asset  and liability
approach to financial accounting and reporting for income taxes. Deferred income
tax assets and  liabilities are  computed annually for  differences between  the
financial  statement and tax basis of assets and liabilities that will result in
taxable or deductible amounts in the future based on enacted tax laws and  rates
applicable to the period in which the differences are expected to affect taxable
income.
 
                                      F-10
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
2.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    NET  INCOME (LOSS) PER COMMON AND COMMON EQUIVALENT SHARE  Net income (loss)
per common and common equivalent share is computed by dividing net income (loss)
by the  weighted  average number  of  common  stock and  dilutive  common  stock
equivalents  outstanding. The total weighted average number of common and common
equivalent shares outstanding has  been adjusted to give  effect to the  reverse
stock  split authorized  by the Company's  shareholders on March  2, 1996, which
will not  become effective  until  a proposed  initial  public offering  of  the
Company's  common stock  is allowed  to become  effective by  the Securities and
Exchange Commission  (Note 7).  Common stock  equivalents result  from  dilutive
stock options and warrants. Common equivalent shares are not included in the per
share  calculations when  the effect of  their inclusion  would be antidilutive,
except that, in accordance with Securities and Exchange Commission requirements,
common and common  equivalent shares issued  during the 12  months prior to  the
Company's proposed initial public offering have been included in the calculation
(using  the treasury  stock method based  on an assumed  initial public offering
price of $8.50 per share) as if they were outstanding for all periods presented.
The net income (loss) per common share will change if the actual initial  public
offering  price differs from the assumed initial public offering price per share
utilized in this calculation. Fully diluted earnings (loss) per common share  is
not presented because of its antidilutive effect.
 
    RECENTLY  ISSUED  ACCOUNTING  STANDARDS   In  October,  1995,  the Financial
Accounting Standards Board  issued Statement of  Financial Accounting  Standards
No.  123, ACCOUNTING FOR STOCK-BASED COMPENSATION  (SFAS 123). SFAS 123 requires
expanded disclosures of stock-based compensation arrangements with employees and
encourages (but  does not  require) application  of the  fair value  recognition
provisions  of SFAS 123 to such arrangements. SFAS 123 is required to be adopted
for reporting purposes by the Company  in fiscal 1996. The Company is  currently
evaluating  whether or not it will change  to the recognition provisions of SFAS
123 and  has  not  yet  performed the  required  calculations.  The  fair  value
recognition  and measurement provisions of SFAS 123 for stock-based arrangements
with nonemployees is not expected to have a significant impact on the Company as
such transactions were accounted for on the fair value basis during fiscal  1994
and 1995.
 
    FINANCIAL  RISKS AND UNCERTAINTIES  In accordance with American Institute of
Certified Public  Accountants  Statement of  Position  No. 94-6,  DISCLOSURE  OF
CERTAIN  SIGNIFICANT RISKS AND  UNCERTAINTIES, the Company  has disclosed in the
financial statements certain financial  risks and uncertainties  to which it  is
subject:  Concentration of sales to a limited number of customers; single source
supplier of raw materials; and use of estimates to review the carrying value  of
long-lived  assets and equipment  held for sale  which may change  in the future
given the rapid technological changes associated with the industry in which  the
Company operates.
 
                                      F-11
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
3.  PROPERTY AND EQUIPMENT
    Property and equipment consist of the following:
 
<TABLE>
<CAPTION>
                                                                                              AT DECEMBER 31,
                                                                        ESTIMATED USEFUL   ----------------------  AT MARCH 31,
                                                                         LIVES IN YEARS       1994        1995         1996
                                                                        ----------------   ----------  ----------  ------------
                                                                                                                   (UNAUDITED)
<S>                                                                     <C>                <C>         <C>         <C>
Leasehold improvements................................................         10          $  724,954  $  912,395   $ 1,189,978
Manufacturing process equipment.......................................         10           3,256,558   4,157,449     4,364,793
Construction in progress..............................................                         98,746   1,139,023     1,524,042
Other manufacturing equipment.........................................          7             850,702   1,084,621     1,030,382
Fixtures and equipment................................................        3-7             159,765     272,072       324,281
                                                                                           ----------  ----------  ------------
                                                                                            5,090,725   7,565,560     8,433,476
Less accumulated depreciation and amortization........................                        274,855     570,179       679,172
                                                                                           ----------  ----------  ------------
                                                                                           $4,815,870  $6,995,381   $ 7,754,304
                                                                                           ----------  ----------  ------------
                                                                                           ----------  ----------  ------------
</TABLE>
 
    Property  and  equipment  includes assets  under  capital lease  at  cost of
$104,843, $276,824 and $319,518 and accumulated amortization of $14,539, $39,926
and $46,469 as of December 31, 1994 and 1995 and March 31, 1996, respectively.
 
4.  NOTES PAYABLE, LONG-TERM DEBT, AND CAPITAL LEASE OBLIGATIONS
    Notes payable, long-term debt, and capital lease obligations consist of  the
following:
 
<TABLE>
<CAPTION>
                                                                             AT DECEMBER 31,
                                                                       ----------------------------  AT MARCH 31,
                                                                           1994           1995           1996
                                                                       -------------  -------------  -------------
                                                                                                      (UNAUDITED)
<S>                                                                    <C>            <C>            <C>
Notes payable:
Bridge financing (A).................................................                 $   4,000,000  $   4,000,000
Line of credit (B)...................................................                     1,916,480      1,966,480
Line of credit (C)...................................................                       225,000        225,000
Long-term debt and capital lease obligations:
Shareholder note payable (D).........................................                 $   1,416,667      1,166,667
Shareholder note payable (E).........................................  $     200,000        200,000        200,000
Capital lease obligations (F)........................................        105,275        187,663        214,515
SBA loan, repaid in 1995.............................................        344,965
                                                                       -------------  -------------  -------------
                                                                             650,240      1,804,330      1,581,182
Less current maturities..............................................        122,164      1,041,547      1,290,864
                                                                       -------------  -------------  -------------
Long-term debt.......................................................  $     528,076  $     762,783  $     290,318
                                                                       -------------  -------------  -------------
                                                                       -------------  -------------  -------------
</TABLE>
 
    The  carrying amounts  of long-term  debt approximate  fair market  value on
December 31, 1994  and 1995 and  March 31, 1996,  respectively. Rates  currently
available  to the Company  for debt with similar  terms and remaining maturities
are used to estimate the fair value of the existing debt.
 
(A) In October 1995, the Company issued $4 million of notes payable (the  Bridge
    Notes). The Bridge Notes bear interest at 11.75% per annum with interest and
    principal  due the earlier of October 15, 1996 or the receipt by the Company
    of  gross   proceeds   of   at   least  $7   million   in   a   private   or
 
                                      F-12
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
4.  NOTES PAYABLE, LONG-TERM DEBT, AND CAPITAL LEASE OBLIGATIONS (CONTINUED)
    public  financing that includes securities with equity features or debt with
    a term of one year  or more. The Bridge  Notes are secured by  substantially
    all  of the Company's assets, subject to  the prior security interest of the
    Company's lines of credit and $1,416,667 shareholder note payable.
 
    The Company  incurred  costs  of  approximately  $220,000  relating  to  the
    issuance  of  the  Bridge  Notes.  These costs  are  being  amortized,  on a
    straight-line basis, from the  date of issuance until  October 15, 1996.  If
    the  Bridge Notes are repaid earlier  than October 15, 1996, any unamortized
    related costs will be charged to interest expense at such time.
 
    In connection  with  this financing,  the  Company issued  warrants  to  the
    purchasers  of the Bridge Notes to purchase a total of 400,000 shares of the
    Company's common stock and to the selling agent of the Bridge Note financing
    warrants to purchase a total of 40,000 shares of the Company's common stock.
    See Note 7 for a description of the terms and accounting for these warrants.
 
(B) During fiscal 1995, the  Company obtained a $2,000,000  transaction-specific
    line  of credit ($1,916,480 and $1,966,480  outstanding at December 31, 1995
    and March 31, 1996, respectively) through the Bank of America, guaranteed by
    the Export Import Bank (EXIM) of the United States. Under terms of the  line
    of  credit, proceeds from  this borrowing are  to be used  by the Company to
    complete the coating system equipment to be sold to joint venture (see  Note
    8).  Borrowings bear interest at  1% over prime (9.5%  and 9.25% at December
    31, 1995 and March 31, 1996, respectively) and are secured by the  equipment
    held  for sale and all  other current assets. Borrowings  are limited to the
    lesser of $2,000,000 or 75% of the value of the equipment held for sale,  as
    defined.  The borrowings  will be repaid  from the proceeds  of such coating
    system equipment sale, and during the three months ended March 31, 1996  the
    due date was extended to May 31, 1996 if not repaid sooner.
 
(C)  The EXIM guarantee has been extended to a $500,000 revolving line of credit
    ($225,000 outstanding at December 31, 1995 and March 31, 1996). This line of
    credit is  to  be used  to  finance  products for  export.  Borrowings  bear
    interest at a rate of 1% over prime (9.5% and 9.25% at December 31, 1995 and
    March  31, 1996,  respectively) and are  secured by  accounts receivable and
    inventory. Borrowings are limited to the  lesser of $500,000 or a  borrowing
    base, as defined, which exceeded $500,000 at December 31, 1995 and March 31,
    1996. The line was extended during the three months ended March 31, 1996 and
    is now due May 31, 1996.
 
    Repayment of both the transaction specific and revolving lines of credit are
    guaranteed  by the  Company's president,  who is  also a  shareholder of the
    Company. The underlying credit agreement prohibits the payment of dividends,
    repurchase of Company stock,  and requires the  lender's written consent  to
    incur  additional debt. The credit  agreement contains various financial and
    other restrictive covenants, which require, among other matters, the Company
    to maintain profitability  for each quarterly  accounting period  commencing
    July  1, 1995, maintain a  tangible net worth, as  defined, of at least $2.8
    million and  to maintain  a ratio  of total  nonsubordinated liabilities  to
    tangible  net worth, as defined, not to exceed 2.1:1.0. Subordinated debt of
    $4 million (the  Bridge Notes)  is added  to total  shareholders' equity  to
    calculate  tangible  net worth  for purposes  of  the credit  agreement. The
    Company was in compliance with the terms of the credit agreement at December
    31, 1995 and March 31, 1996.
 
(D) On May 1, 1995, a director of the Company made a loan to the Company in  the
    original  principal amount of $1.5 million. The loan bears interest at prime
    plus 3.75%  (12.25%  and  12% at  December  31,  1995 and  March  31,  1996,
    respectively)   and   is  secured   by   substantially  all   equipment  and
 
                                      F-13
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
4.  NOTES PAYABLE, LONG-TERM DEBT, AND CAPITAL LEASE OBLIGATIONS (CONTINUED)
    intellectual property  of  the Company.  The  note is  subject  to  periodic
    payments  of principal and accrued interest, and  is payable in full, if not
    sooner paid, on May  10, 1997. The Company  incurred costs of  approximately
    $10,000  relating  to  the  issuance  of the  note.  These  costs  are being
    amortized, on a straight-line basis, from the date of issuance until May 10,
    1997. If  the note  is repaid  earlier  than May  10, 1997  any  unamortized
    related  costs  will  be  charged  to  interest  expense  at  such  time. In
    connection with  the issuance  of this  loan, warrants  were issued  to  the
    director  to purchase up to 75,000 shares of the Company's common stock. See
    Note 7 for a description of the terms and accounting for these warrants.
 
(E) The $200,000 shareholder  note payable bears interest  at 10%, is  unsecured
    and  is  convertible,  at  the  shareholder's  option,  into  shares  of the
    Company's common stock at a conversion rate of $2.00 per share. The note  is
    due  January 1997. This  note is subordinate to  the $2,000,000 and $500,000
    lines of credit. In connection with the issuance of this loan, warrants were
    issued to the  director to  purchase up to  20,000 shares  of the  Company's
    common  stock, exercisable from  August 1994 to August  1997, at an exercise
    price of $2.00 per share.
 
(F) Capital lease obligations  are secured by the  underlying property and  bear
    interest at effective interest rates of approximately 8.75% to 15.70%.
 
    The principal maturities of notes payable, long-term debt, and capital lease
obligations outstanding at March 31, 1996 are as follows:
 
<TABLE>
<CAPTION>
                                                                           DEBT AND
                                                                             NOTES        CAPITAL
                                                                            PAYABLE       LEASES         TOTAL
                                                                         -------------  -----------  -------------
<S>                                                                      <C>            <C>          <C>
 12 months ending December 31,:
  1996.................................................................  $   7,141,480  $    61,602  $   7,203,082
  1997.................................................................        616,667       57,230        673,897
  1998.................................................................                      54,188         54,188
  1999.................................................................                      43,477         43,477
  2000.................................................................                      22,059         22,059
                                                                         -------------  -----------  -------------
                                                                             7,758,147      238,556      7,996,703
Less amounts representing interest.....................................                      50,893         50,893
                                                                         -------------  -----------  -------------
Notes payable, debt and capital lease obligations outstanding..........  $   7,758,147  $   187,663  $   7,945,810
                                                                         -------------  -----------  -------------
                                                                         -------------  -----------  -------------
</TABLE>
 
5.  INCOME TAXES
    For  income tax purposes, the Company has  a U.S. federal net operating loss
carryforward  of  approximately  $4,000,000  as   of  December  31,  1995.   The
carryforward expires in 2006 through 2009.
 
    Due  to certain ownership changes, as defined in Section 382 of the Internal
Revenue Code,  which occurred  during  the year  ended  December 31,  1993,  the
Company's  net operating loss  carryforwards incurred through  February, 1993 of
$700,000 are limited to annual utilization of approximately $50,000 per year.
 
    Utilization of the Company's net operating loss carryforward is not expected
to be limited as a  result of this Offering.  However, the Company's ability  to
use  its net operating  loss carryforwards may be  further limited by subsequent
issuances of common stock.
 
                                      F-14
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
5.  INCOME TAXES (CONTINUED)
    The benefit for income taxes in fiscal 1994 and the three months ended March
31, 1995 have  been offset by  a valuation allowance  because the Company's  net
operating  losses could not  be carried back  and future realization  of the net
operating  loss  carryforwards  is  uncertain.  The  Company  has  utilized  net
operating loss carryforwards in fiscal 1995 and the three months ended March 31,
1996 to substantially offset any taxes due.
 
<TABLE>
<CAPTION>
                                                                                YEAR ENDED DECEMBER 31,
                                                                                ------------------------
                                                                                    1994         1995
                                                                                ------------  ----------
<S>                                                                             <C>           <C>
Tax expense (benefit) computed at statutory rates.............................  $   (492,000) $   18,000
State taxes...................................................................         2,000       2,000
Change in valuation allowance.................................................       490,000     (20,000)
                                                                                ------------  ----------
                                                                                $    --       $   --
                                                                                ------------  ----------
                                                                                ------------  ----------
</TABLE>
 
    Temporary  differences, tax carryforwards,  and valuation allowances consist
of the following:
 
<TABLE>
<CAPTION>
                                                                                 AT DECEMBER 31,
                                                                          ------------------------------
                                                                               1994            1995
                                                                          --------------  --------------
<S>                                                                       <C>             <C>
Noncurrent:
  Excess of tax over book depreciation and other........................  $     (230,000) $     (200,000)
  Tax loss carryforward.................................................       1,450,000       1,400,000
  Valuation allowance...................................................      (1,220,000)     (1,200,000)
                                                                          --------------  --------------
                                                                          $     --        $     --
                                                                          --------------  --------------
                                                                          --------------  --------------
</TABLE>
 
6.  COMMITMENTS
    OPERATING  LEASE  COMMITMENTS   --  The   Company  is   obligated  under   a
noncancelable  operating lease  for the rental  of its  office and manufacturing
facility through July  2001. The lease  contains provisions for  payment of  the
facility  operating  expenses and  real estate  taxes  as additional  rents. The
Company has the option to  terminate the lease on  the fifth anniversary of  the
commencement  of the lease  by providing 120-days written  notice to the lessor,
with a penalty. Rent expense for the years ended December 31, 1994 and 1995  was
approximately  $100,000 in both years. Rent  expense for the three month periods
ended March 31,  1995 and  1996 was  $18,088 and  $25,703, respectively.  During
January  1996, the  Company entered into  an operating lease  to rent additional
manufacturing space for a term of ten years. This lease contains provisions  for
payment  of the facility operating expenses  and real estate taxes as additional
rents. Minimum lease payments due under these operating leases are as follows:
 
<TABLE>
<S>                                                                      <C>
Year ending December 31:
  1996.................................................................  $  135,942
  1997.................................................................     221,610
  1998.................................................................     221,610
  1999.................................................................     221,610
  2000.................................................................     221,610
  Thereafter...........................................................     738,393
                                                                         ----------
Total minimum payments.................................................  $1,760,775
                                                                         ----------
                                                                         ----------
</TABLE>
 
                                      F-15
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
6.  COMMITMENTS (CONTINUED)
    EMPLOYMENT AGREEMENT --  The Company  has executed  an employment  agreement
with  its  president through  1997. The  agreement provides  for a  maximum base
compensation of $120,000 per year if certain financial performance goals, as set
by the Company's Board of Directors, are met. The maximum base compensation  may
be  reset through mutual agreement of the  president and Board of Directors. The
agreement also provides for  the issuance of options,  at the discretion of  the
Board  of Directors, for the purchase of  the Company's common stock, payment of
annual incentive bonuses, and an option for the president to require the Company
to purchase his shares if the  Company terminates his employment without  cause.
As  of December 31, 1995 and March 31,  1996, options for the purchase of 25,000
shares of  the  Company's  common  stock  have  been  issued  pursuant  to  this
agreement.
 
   
    GUARANTEE  -- The Company has guaranteed $400,000 of the purchase price of a
building which its joint venture investee is required to pay (see Note 8).
    
 
7.  SHAREHOLDERS EQUITY
    AUTHORIZED SHARES -- On March  2, 1996, the Company's shareholders  approved
an  amendment to the Company's Articles of Incorporation, whereby the authorized
stock of the Company  was stated as  24,000,000 shares of  common stock, no  par
value,  and 6,000,000 undesignated shares, no  par value. The Company's Board of
Directors may designate any series and  fix any relative rights and  preferences
of  the  undesignated stock.  The authorized  shares have  been restated  in the
financial statements to reflect the impact of this amendment.
 
    REVERSE STOCK SPLIT -- On March 2, 1996, the Company's shareholders approved
a one for two reverse stock split. The reverse stock split will become effective
when a proposed initial  public offering of the  Company's common stock  becomes
effective  (Note 9). All share  and per share amounts  included in the financial
statements and notes  thereto have been  restated to reflect  the impact of  the
reverse stock split.
 
    STOCK  OPTION PLAN -- On March  2, 1996, the Company's shareholders approved
the amendment of the Company's 1992 Stock Option Plan (the Plan) to provide  for
the  issuance of up  to 625,000 shares  of the Company's  common stock under the
Plan. Under the Plan, incentive stock options and nonqualified stock options may
be granted to key employees and others  at exercise prices not less then 85%  of
the  fair market value of the underlying common  stock at the date of grant. The
Board of  Directors establishes  all terms  and conditions  of each  grant.  The
following summarizes stock option activity related to the Plan:
 
<TABLE>
<CAPTION>
                                                                              OPTION SHARES
                                                                 ---------------------------------------
                                                                 OUTSTANDING  EXERCISABLE   PRICE RANGE
                                                                 -----------  -----------  -------------
<S>                                                              <C>          <C>          <C>
Balances at December 31, 1993..................................      23,500        1,313   $   2.00
Granted........................................................       4,250                  2.00 - 4.00
Became exercisable.............................................                    5,813     2.00 - 4.00
                                                                 -----------  -----------  -------------
Balances at December 31, 1994..................................      27,750        7,126     2.00 - 4.00
Granted........................................................      48,500                    4.00
Became exercisable.............................................                   32,000     2.00 - 4.00
                                                                 -----------  -----------  -------------
Balances at December 31, 1995..................................      76,250       39,126     2.00 - 4.00
Became exercisable.............................................                   11,400     2.00 - 4.00
                                                                 -----------  -----------  -------------
Balances at March 31, 1996.....................................      76,250       50,526     2.00 - 4.00
                                                                 -----------  -----------  -------------
                                                                 -----------  -----------  -------------
</TABLE>
 
                                      F-16
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
7.  SHAREHOLDERS EQUITY (CONTINUED)
    During  1994, the Board of Directors granted an option to an unrelated party
to purchase 6,875 shares of the Company's  common stock at an exercise price  of
$4.00 per share. Options to purchase 2,500 shares of common stock were exercised
during 1995. Options to purchase 4,375 shares expired during 1995.
 
    During 1995, the Board of Directors granted currently exercisable options to
purchase  5,000 shares of common stock at $4.00 per share to each outside member
of the Board of Directors (for options to purchase an aggregate of 15,000 shares
of common  stock).  In addition,  the  Board  of Directors  granted  options  to
purchase 15,000 shares of common stock at $4.00 per share to each outside member
of the Board of Directors (for options to purchase an aggregate of 45,000 shares
of common stock), which vest over a three-year period commencing March 15, 1996.
All  options granted to  Board of Directors  members expire ten  years after the
date of  grant.  10,000 of  such  options expired  during  March 1996  upon  the
resignation of a member of the Board of Directors.
 
    STOCK  WARRANTS  --  The Company  has  granted warrants  in  connection with
certain debt financing obtained  during 1992, 1993, and  1995 and in  connection
with common stock issued during 1993 and 1994.
 
    Warrants outstanding at December 31, 1995 and March 31, 1996 are as follows:
 
<TABLE>
<CAPTION>
NUMBER OF  EXERCISE PRICE
 SHARES      PER SHARES              PERIOD EXERCISABLE
- ---------  ---------------  ------------------------------------
<S>        <C>              <C>
   49,250     $    2.00             Exercisable to November 1997
  145,109          2.00                       March 1994 to 1998
   20,000          2.00                      August 1994 to 1997
   90,000          2.00                   September 1994 to 1998
   23,444          4.00                    November 1994 to 1998
   44,519          4.00                    December 1994 to 1998
   23,028          4.00                     January 1995 to 1999
    3,250          4.00                    February 1995 to 1999
   75,000          4.00                         May 1996 to 2003
  440,000        (A)                        October 1996 to 2000
- ---------
  913,600
- ---------
- ---------
</TABLE>
 
(A)  These warrants were issued in connection  with the issuance of Bridge Notes
    during fiscal 1995. In  connection with this  financing, the Company  issued
    warrants  to  the purchasers  of the  Bridge  Notes to  purchase a  total of
    400,000 shares of the Company's common stock and to the selling agent of the
    Bridge Note financing warrants to purchase  a total of 40,000 shares of  the
    Company's  common stock.  The exercise price  of the warrants  issued to the
    Bridge Note holders is 75% of the per  share price (100% in the case of  the
    selling  agent warrants) of any shares of the Company's common stock sold in
    the private  or  public equity  offering  next following  the  Bridge  Notes
    placement  which results  in gross  proceeds to the  Company of  at least $7
    million. In the  event the  Company does not  complete a  public or  private
    financing  prior to March 31, 1997, the warrant exercise price will be $4.00
    per share. The holders of the warrants may convert the warrants, at any time
    during the  exercise period,  into the  number of  shares of  the  Company's
    common  stock obtained by dividing the differential between the then current
    market price of  the Company's  common stock,  as defined,  and the  warrant
    exercise price by such current market price of the
 
                                      F-17
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
7.  SHAREHOLDERS EQUITY (CONTINUED)
    Company's common stock. The Company has obtained a valuation of the warrants
    and has determined, based on such valuation, that the value of the warrants,
    if any, is insignificant to the financial statements.
 
    In connection with a $1.5 million loan received in May, 1995 from a director
of  the Company, warrants were  issued to the director  to purchase up to 75,000
shares of the Company's common  stock at an exercise  price of $4.00 per  share.
The  Company has obtained a valuation of  the warrants and has determined, based
on such valuation, that the value of  the warrants, if any, is insignificant  to
the financial statements.
 
8.  JOINT VENTURE AGREEMENT
    The  Company has  entered into a  joint venture agreement  with the Shenzhen
WABO Group  Company, Limited  ("WABO"), of  Shenzhen, China.  The joint  venture
company,   known  as  the  Shenzhen   Fortune  Conductive  Glass  Company,  Ltd.
("Fortune"), was created  to produce  TN grade ITO  coated glass  for the  Asian
market.
 
   
    WABO  has provided cash to  Fortune to purchase a  glass coating system from
the Company  and for  working  capital purposes.  The  Company is  obligated  to
provide  $4,658,000 (40%  of the  total capitalization  of the  joint venture of
$11,645,000). The Company has  agreed to sell to  Fortune the ITO glass  coating
machine  for $10,145,000. The contribution of  $4,658,000 has been deducted from
the gross  purchase price  of the  coating  system because  the Company  is  not
relying  on any material earnings  or distributions from Fortune  in part due to
uncertainty of  repatriation of  funds from  China. Therefore  the Company  will
record  the  net purchase  price  of $5,487,000  ($10,145,000-$4,658,000)  as an
equipment sale and has  not recorded its capital  contribution as an asset.  The
Company  has followed the provisions of  Emerging Issues Task Force (EITF) Issue
No. 89-7  in accounting  for the  glass coating  system sale.  EITF 89-7  offers
guidance  regarding  gain  recognition  on  this  sale  and  accounting  for the
Company's investment in  the joint venture.  The Company is  accounting for  the
sale  of  the glass  coating  system using  the  completed contract  method. The
Company is not  obligated to make  additional investments in  the joint  venture
other  than a guarantee provided by the  Company with respect to $400,000 of the
purchase price of a building which Fortune is obligated to pay in the second and
third years of operations.
    
 
   
    The $5,487,000  million net  purchase price  being paid  by Fortune  to  the
Company  is secured by a letter of credit, confirmed by Chemical Bank, New York.
As of December 31, 1995 and March  31, 1996, the Company has received a  deposit
of  $1,530,000 from  Fortune for  the equipment. $3,270,000  is to  be paid upon
shipment by  the  Company. Payment  of  the final  $600,000  of this  amount  is
contingent  upon the equipment  operating within certain  specifications for ten
days at twenty hours per day upon assembly at Fortune's facility as evidenced by
a certificate from Fortune.  In addition, the letter  of credit stipulates  that
the equipment must be shipped on or before June 30, 1996. The Company expects to
comply  with this  requirement. The  Company is  subject to  certain contractual
penalties for failure  to ship by  April 15, 1996.  These penalties require  the
Company  to  refund  Fortune's  deposit of  $1,530,000,  which  amount  has been
recorded as a current liability of the Company. The equipment was not shipped by
April 15 but the  Company expects to ship  by the end of  May of 1996. WABO  has
orally  agreed to  waive these  penalties provided  the equipment  is shipped no
later than June  30, 1996. In  addition, the Company  contends the shipment  was
delayed  due to  actions of  WABO, in which  case no  penalty would  be due. Any
penalties which the  Company may  incur cannot  be withheld  from the  confirmed
letter of credit amounts. However, payment of the final $600,000 of the purchase
price  will not  occur until  certification is  received from  Fortune after the
equipment is shipped. The Company
    
 
                                      F-18
<PAGE>
                              PHOTRAN CORPORATION
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
                   YEARS ENDED DECEMBER 31, 1994 AND 1995 AND
             THREE MONTHS ENDED MARCH 31, 1995 AND 1996 (UNAUDITED)
 
8.  JOINT VENTURE AGREEMENT (CONTINUED)
   
will not commence installation procedures until a written waiver of penalties is
received. The Company is currently working with WABO to memorialize this waiver.
In the event  the Company does  not ship the  equipment, it intends  to use  the
equipment to manufacture additional products.
    
 
    The  equipment was originally  scheduled to be shipped  by November 6, 1995.
Due to a  delay by WABO  in delivering the  letter of credit  and the  Company's
inability to obtain working capital financing on a timely basis, the project was
delayed  for several  months. The Company  has incurred costs  through March 31,
1996 of $4,193,096 in  construction of the coating  system and anticipates  that
additional  costs of  $350,000 will  be incurred  during 1996  in completing and
installing the coating system pursuant  to its obligations under the  agreement.
The  Company  has  provided  certain  warranties  to  the  joint  venture  for a
twelve-month period after the acceptance  of the equipment. During this  period,
any  repairs or replacements to the equipment  must be performed by the Company.
The Company's  estimated  obligation  for  this  warranty  is  included  in  the
estimated  costs to  complete and install  the coating system.  The Company will
recognize profit under the contract when its obligations under the contract  are
substantially  completed, and  the equipment is  accepted by  the joint venture.
Upon acceptance (when certification  is received from  Fortune), profit will  be
deferred for the warranty costs and the $400,000 guarantee by the Company of the
purchase  price for the building. Profit deferred  for the guarantee will not be
recognized until such time  as Fortune is generating  cash flow from  operations
that  are sufficient to fund  its debt service and  other obligations. Given the
technical nature  of the  coating  system being  constructed, it  is  reasonably
possible  that the  Company's estimate  of costs  to complete  the contract will
change in the future.
 
9.  SUBSEQUENT EVENTS
 
   
    PUBLIC OFFERING --  The Company is  planning an initial  public offering  of
2,000,000  shares of common stock at an assumed initial public offering price of
$8.50 per share.  The Company will  grant to the  underwriters an  overallotment
option  pursuant to which an  additional 300,000 shares may  be sold on the same
terms as the initial stock for  the purpose of covering any overallotment  sales
made  in the  public offering.  In connection  with the  proposed initial public
offering, the representative of  the underwriters would  be granted warrants  to
purchase  up to  160,000 shares  of common  stock at  120% of  the price  to the
public, exercisable commencing one year after the effective date of the offering
for a period of four years.
    
 
                                      F-19
<PAGE>
- ---------------------------------------------
                                   ---------------------------------------------
- ---------------------------------------------
                                   ---------------------------------------------
 
    NO  DEALER,  SALESPERSON OR  ANY OTHER  PERSON HAS  BEEN AUTHORIZED  TO GIVE
INFORMATION OR  MAKE ANY  REPRESENTATIONS NOT  CONTAINED IN  THIS PROSPECTUS  IN
CONNECTION  WITH THE OFFER MADE  BY THIS PROSPECTUS, AND  IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS HAVING BEEN  AUTHORIZED
BY THE COMPANY OR THE UNDERWRITERS. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER
TO  SELL, OR A SOLICITATION BY ANYONE IN ANY JURISDICTION IN WHICH SUCH OFFER OR
SOLICITATION IS  NOT AUTHORIZED  OR IN  WHICH THE  PERSON MAKING  SUCH OFFER  OR
SOLICITATION  IS NOT QUALIFIED TO DO  SO OR TO ANYONE TO  WHOM IT IS UNLAWFUL TO
MAKE SUCH OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY
SALE MADE HEREUNDER SHALL  UNDER ANY CIRCUMSTANCES  CREATE ANY IMPLICATION  THAT
THE  AFFAIRS OF THE COMPANY  SINCE THE DATE HEREOF  OR THE INFORMATION HEREIN IS
CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE OF THIS PROSPECTUS.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                                      PAGE
                                                    ---------
<S>                                                 <C>
Prospectus Summary................................          3
Risk Factors......................................          5
Use of Proceeds...................................         10
Dividend Policy...................................         11
Dilution..........................................         11
Capitalization....................................         12
Selected Financial Data...........................         13
Management's Discussion and Analysis of Financial
 Condition and Results of Operations..............         14
Business..........................................         21
Management........................................         33
Certain Transactions..............................         36
Principal Shareholders............................         38
Description of Capital Stock......................         38
Shares Eligible for Future Sale...................         40
Underwriting......................................         42
Legal Matters.....................................         43
Experts...........................................         43
Available Information.............................         43
Index to Consolidated Financial Statements........        F-1
</TABLE>
    
 
                            ------------------------
 
    UNTIL              , 1996 (25 DAYS AFTER  THE DATE OF THIS PROSPECTUS),  ALL
DEALERS  EFFECTING  TRANSACTIONS IN  THE REGISTERED  SECURITIES, WHETHER  OR NOT
PARTICIPATING IN THIS  DISTRIBUTION, MAY  BE REQUIRED TO  DELIVER A  PROSPECTUS.
THIS  IS IN ADDITION TO  THE OBLIGATION OF DEALERS  TO DELIVER A PROSPECTUS WHEN
ACTING  AS  UNDERWRITERS  AND  WITH  RESPECT  TO  THEIR  UNSOLD  ALLOTMENTS   OR
SUBSCRIPTIONS.
 
   
                                2,000,000 SHARES
    
 
                                     [LOGO]
 
                                  COMMON STOCK
 
                             ---------------------
 
                                   PROSPECTUS
 
                             ---------------------
 
                          JOHN G. KINNARD AND COMPANY,
                                  INCORPORATED
 
                                          , 1996
 
- ---------------------------------------------
                                   ---------------------------------------------
- ---------------------------------------------
                                   ---------------------------------------------
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 24.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    Section  302A.521 of  the Minnesota  Business Corporation  Act provides that
unless prohibited or  limited by  a corporation's articles  of incorporation  or
by-laws,  the  corporation  must  indemnify  its  current  and  former officers,
directors, employees and  agents against expenses  (including attorneys'  fees),
judgments,  penalties,  fines  and amounts  paid  in settlement  and  which were
incurred in connection with actions, suits, or proceedings in which such persons
are parties by reason of  the fact that they are  or were an officer,  director,
employee  or agent of the corporation, if  they (i) have not been indemnified by
another organization,  (ii) acted  in  good faith,  (iii) received  no  improper
personal  benefit, (iv) in the case of  a criminal proceeding, had no reasonable
cause to believe the conduct was unlawful, and (v) reasonably believed that  the
conduct  was in  the best  interests of  the corporation.  Section 302A.521 also
permits a  corporation to  purchase  and maintain  insurance  on behalf  of  its
officers,  directors, employees  and agents against  any liability  which may be
asserted against, or incurred by, such persons in their capacities as  officers,
directors,   employees  or  agents  of  the  corporation,  whether  or  not  the
corporation would  have been  required to  indemnify such  persons against  such
liability under the provisions of such statutory section.
 
    Article VII of the Second Amended and Restated Articles of Incorporation and
Article  VI of the Amended  and Restated By-Laws of  the Registrant provide that
the directors, officers, employees and agents  of the Registrant shall have  the
rights to indemnification provided by Section 302A.521 of the Minnesota Business
Corporation Act.
 
    Section  7  of the  Underwriting  Agreement, filed  as  Exhibit 1.1  to this
Registration Statement, provides certain indemnification rights to officers  and
directors of the Registrant.
 
ITEM 25.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
    The  following table sets  forth the estimated  expenses to be  borne by the
Registrant in connection  with the issuance  and distribution of  the shares  of
Common Stock offered hereby;
 
   
<TABLE>
<S>                                                                <C>
SEC registration fee.............................................  $   7,138
NASD Filing Fee..................................................      2,444
Legal fees and expenses..........................................     75,000
Accounting fees and expenses.....................................     75,000
Representative's accountable expenses............................     50,000
Blue Sky fees and expenses.......................................     10,000
Printing expenses................................................     90,000
Transfer agent fees and expenses.................................      7,500
Miscellaneous....................................................     49,168
                                                                   ---------
    Total........................................................  $ 400,000
                                                                   ---------
                                                                   ---------
</TABLE>
    
 
    Each  amount  set forth  above, except  the SEC  registration fee,  the NASD
filing  fees  and  the   Representative's  accountable  expense  allowance,   is
estimated.
 
ITEM 26.  RECENT SALES OF UNREGISTERED SECURITIES.
 
    All  share and  per share price  data in  this section has  been restated to
reflect the 1-for-2 reverse stock split to become effective immediately prior to
the effectiveness of this Offering. During the past three years, the  Registrant
has sold the following securities pursuant to exemptions from registration under
the Securities Act of 1933, as amended (the "Securities Act"):
 
    SALES OF SHARES OF COMMON STOCK.
 
    On  November 17, 1993, the Registrant  issued an aggregate of 234,437 shares
to 38 accredited investors and 7 nonaccredited investors pursuant to an offering
under Regulation  D of  Section 3(b)  of  the Securities  Act for  an  aggregate
consideration of $937,750.
 
                                      II-1
<PAGE>
    On  December 14, 1993, the Registrant  issued an aggregate of 448,938 shares
to 74  accredited  investors  and  14 nonaccredited  investors  pursuant  to  an
offering  under  Regulation D  of  Section 3(b)  of  the Securities  Act  for an
aggregate consideration of $1,795,750.
 
    On January 7, 1994, the Registrant  issued an aggregate of 66,575 shares  to
12  accredited investors and  3 nonaccredited investors  pursuant to an offering
under Regulation  D of  Section 3(b)  of  the Securities  Act for  an  aggregate
consideration of $266,300.
 
    On January 31, 1994, the Registrant issued an aggregate of 163,700 shares to
41  accredited investors pursuant  to an offering under  Regulation D of Section
3(b) of the Securities Act for an aggregate consideration of $654,800.
 
    On February 18, 1994, the Registrant issued an aggregate of 32,550 shares to
9 accredited investors  pursuant to an  offering under Regulation  D of  Section
3(b) of the Securities Act for an aggregate consideration of $130,200.
 
    ISSUANCE  AND EXERCISE OF STOCK OPTIONS.  On various dates from January 1993
through November 1995, the Registrant issued options to purchase an aggregate of
19,000 shares at an exercise price of $2.00 per share and an aggregate of 57,250
shares at an exercise price  of $4.00 per share to  66 employees under its  1992
Stock  Option Plan pursuant to  Rule 701 of Section  3(b) of the Securities Act.
None of these options have been exercised.
 
    On June 9, 1994, the Registrant  issued options to purchase 6,875 shares  at
an  exercise price of $4.00 per share pursuant  to Sections 4(2) and 4(6) of the
Securities Act. On May 31, 1995 options to purchase 2,500 shares were exercised.
The balance of these options expired unexercised.
 
    ISSUANCE OF BRIDGE NOTES AND WARRANTS.
 
    On August  8, 1993,  the  Registrant issued  $200,000  in bridge  notes  and
warrants  to purchase  20,000 shares  of Common  Stock at  $2.00 per  share to a
director of the Registrant pursuant to Sections 4(2) and 4(6) of the  Securities
Act. None of the warrants have been exercised.
 
    On  September 23, 1993,  the Registrant issued $600,000  in bridge notes and
warrants to purchase 60,000 shares of Common  Stock at $2.00 per share to  eight
accredited  investors pursuant to Sections 4(2)  and 4(6) of the Securities Act,
and an agent's warrant to  purchase 30,000 shares of  Common Stock at $2.00  per
share to R.J. Steichen & Company, who served as placement agent in the offering.
None of the warrants have been exercised.
 
   
    In  November of 1993 through February of 1994, the Registrant issued agent's
warrants for an aggregate of 94,240 shares of Common Stock at $4.00 per share to
R.J. Steichen & Company, who served as placement agent in a private placement of
the Company's Common Stock. None of the warrants have been exercised.
    
 
    On May 1,  1995, the  Registrant issued a  $1,500,000 note  and warrants  to
purchase  75,000 shares of Common Stock at $4.00  per share to a director of the
Registrant pursuant to Sections 4(2) and 4(6) of the Securities Act. None of the
warrants have been exercised.
 
    On October 15 and 31, 1995, the Registrant issued $4,000,000 in bridge notes
and warrants to purchase 400,000 shares of  Common Stock at 75% of the Price  to
Public  to twenty-eight accredited investors pursuant  to Sections 4(2) and 4(6)
of the Securities Act. None of the warrants have been exercised.
 
    On October 31, 1995 the Registrant issued agent's warrants for 40,000 shares
of Common Stock  at the Price  to Public  to the Representative,  who served  as
placement  agent in  the $4,000,000 bridge  note offering. None  of the warrants
have been exercised.
 
                                      II-2
<PAGE>
    RESTRICTIONS ON  SECURITIES.   All securities  issued or  to be  issued  are
restricted  securities and  all certificates  issued or  to be  issued contain a
legend that the securities represented thereby are restricted securities and are
not transferable without  registration or an  exemption from registration  under
all applicable state and federal securities laws.
 
ITEM 27.  EXHIBITS
 
   
<TABLE>
<CAPTION>
EXHIBIT
  NO.                                   DESCRIPTION
- -------     --------------------------------------------------------------------
<C>         <S>
   1.1*     Underwriting Agreement, including Representative's Warrant.
   1.2      Agreement Among Underwriters.
   1.3      Selected Dealers Agreement.
   3.1      Second  Amended and  Restated Articles  of Incorporation  of Photran
            Corporation, effective March 2, 1996.
   3.2      Amended and  Restated  By-Laws  of  Photran  Corporation,  effective
            December 23, 1992, as amended through February 3, 1996.
   4.1      Second  Amended and  Restated Articles of  Incorporation and Amended
            and  Restated  By-Laws  of  Photran  Corporation  as  amended.  (See
            Exhibits 3.1 and 3.2 above).
   4.2      Specimen of Common Stock Certificate (to be filed by Amendment).
   4.3      Warrant  for Purchase of Shares of  Common Stock, dated November 18,
            1992, for the  purchase of  1,700 shares, issued  to Christopher  T.
            Vanyo.  An identical Warrant For Purchase  of Shares of Common Stock
            was granted  to  one other  individual  for the  purchase  of  1,600
            shares.
   4.4*     Common  Stock  Purchase  Warrant,  dated January  5,  1993,  for the
            purchase of  29,500 shares,  issued  to R.  J. Steichen  &  Company.
            Identical  Common Stock Purchase Warrants  in the amounts of 149,964
            shares, 35,000  shares and  105,254  shares were  granted to  R.  J.
            Steichen  & Company  on February  19, 1993,  February 19,  1993, and
            March 17, 1993, respectively.
   4.5      Form of Warrant for  Purchase of Shares  of Common Stock.  Identical
            Warrants  for Purchase of  Shares of Common Stock  in the amounts of
            20,000 shares and 60,000  shares were granted to  a total of  eleven
            individuals on August 8, 1993 and September 23, 1993, respectively.
   4.6*     Common  Stock Purchase  Warrant, dated  September 23,  1993, for the
            purchase of 48,500 shares,  issued to R. J.  Steichen & Company.  An
            identical  Common  Stock Purchase  Warrant in  the amount  of 11,500
            shares was granted  to R.  J. Steichen  & Company  on September  24,
            1993.
   4.7      Form  of  Promissory  Note.  Identical  Notes  totaling  $600,000 in
            principal amount were  executed by Photran  Corporation in favor  of
            ten individuals on September 23, 1993.
   4.8*     Common  Stock  Purchase  Warrant,  dated January  7,  1994,  for the
            purchase of  140,115 shares,  issued to  R. J.  Steichen &  Company.
            Identical  Common Stock Purchase  Warrants in the  amounts of 11,730
            shares and 36,635 shares were granted to R. J. Steichen & Company on
            January 31, 1994 and February 18, 1994, respectively.
   4.10     Stock Purchase Warrant for 75,000 shares of Common Stock, dated  May
            1, 1995, granted to Steven King.
   4.11     Promissory  Note, dated May 1, 1995, executed by Photran Corporation
            in favor of Steven King.
   4.12     Promissory Note, dated May 26, 1995, executed by Photran Corporation
            in favor of Bank of America National Trust and Savings  Association,
            dated May 26, 1995.
   4.13     Form  of Warrant for  Purchase of Shares  of Common Stock. Identical
            Warrants for Purchase of  Shares of Common Stock  were granted to  a
            total  of 28 individuals on October 15,  1995 to purchase a total of
            400,000 shares.
   4.14     Form of Secured  Promissory Note. Identical  Notes were executed  by
            Photran  Corporation in favor of 28  individuals on October 15, 1995
            for a total principal amount of $4,000,000.
</TABLE>
    
 
                                      II-3
<PAGE>
   
<TABLE>
<CAPTION>
EXHIBIT
  NO.                                   DESCRIPTION
- -------     --------------------------------------------------------------------
<C>         <S>
   4.15     Agent's Warrant to  Purchase 40,000  shares of  Common Stock,  dated
            October   31,  1995,  granted  to   John  G.  Kinnard  and  Company,
            Incorporated.
   5.1      Opinion of Henson & Efron, P.A. (to be filed by Amendment).
  10.1      Contract  Agreement  for  the  Joint  Venture  of  Shenzhen  Fortune
            Conductive  Glass  Company,  Ltd., between  Photran  Corporation and
            Shenzhen Wabo (Group) Company, Limited.
  10.2      License  Agreement   between   Photran   Corporation   and   Applied
            Elastromerics dated May 30, 1991, as amended.
  10.3      Office  Warehouse Lease between  Owobopte Rehabilitation Industries,
            Inc. and Photran Corporation dated July 1991.
  10.4      Photran Corporation 1992 Stock Option Plan.
  10.5      Form of  Incentive  Option  Agreement.  Identical  Incentive  Option
            Agreements  were entered  into with 66  employees for  purchase of a
            total of 76,250 shares.
  10.6      Employment  Agreement  between  David   E.  Stevenson  and   Photran
            Corporation dated January 1, 1993.
  10.7      Form  of  Bridge  Loan  Agreement.  Identical  Loan  agreements were
            entered into  between Photran  Corporation  and ten  individuals  on
            September 23, 1993 for a total principal amount of $600,000.
  10.8      Working Capital Guarantee Program Borrower Agreement between Photran
            Corporation   and  Bank  of  America   National  Trust  and  Savings
            Association, dated September 1, 1994.
  10.9      Loan Agreement, dated May 1,  1995, between Photran Corporation  and
            Steven King.
  10.10*    Eximbank-Guaranteed   Line  of  Credit   Agreement  between  Photran
            Corporation  and  Bank  of   America  National  Trust  and   Savings
            Association dated May 26, 1995, as amended.
  10.11     Guaranty  of indebtedness dated  May 26, 1995,  executed by David E.
            Stevenson in favor  of Bank  of America National  Trust and  Savings
            Association.
  10.12     Irrevocable  Letter of Credit issued by  China Merchants Bank at the
            request of Shenzhen WABO Group Co.  Ltd. for the benefit of  Photran
            Corporation.
  10.13     Distribution  Agreement  between  Photran  Corporation  and Yorkwell
            Company Limited dated September 6, 1994.
  10.14     Form of Subscription and Loan Agreement. Identical Subscriptions and
            Loan agreements were entered into with 28 individuals on October  25
            or 31, 1995 for a total principal amount of $4,000,000.
  10.15     Office  Warehouse  Lease  between  Sparta  Foods,  Inc.  and Photran
            Corporation dated December 21, 1995.
  10.16     Amended and Restated Bridge Loan  Agreement between Steven King  and
            Photran Corporation dated March 15, 1996.
  10.17     Forms of Lockup Agreements.
  11.1*     Statement re Computation of Per Share Earnings.
  23.1      Consent of Henson & Efron, P.A. (included in Exhibit 5.1).
  23.2*     Consent of Deloitte & Touche LLP.
  25.1      Powers of Attorney.
</TABLE>
    
 
- --------------------------
 
*   Denotes documents filed herewith.
 
                                      II-4
<PAGE>
ITEM 28.  UNDERTAKINGS.
 
    The  undersigned small business  issuer hereby undertakes  to provide to the
Underwriters  at   the  closing   specified  in   the  Underwriting   Agreement,
certificates  in such denominations and registered  in such names as required by
the Underwriters to permit prompt delivery to each purchaser.
 
    Insofar as indemnification for liabilities arising under the Securities  Act
of  1933,  as amended  (the  "Securities Act")  may  be permitted  to directors,
officers and controlling persons  of the small business  issuer pursuant to  the
provisions  summarized in Item 24 above, or otherwise, the small business issuer
has been advised that in the  opinion of the Securities and Exchange  Commission
(the "Commission") such indemnification is against public policy as expressed in
the  Act  and  is, therefore,  unenforceable.  In  the event  that  a  claim for
indemnification against such liabilities  (other than the  payment by the  small
business  issuer  of  expenses  incurred  or  paid  by  a  director,  officer or
controlling person of the small business issuer in the successful defense of any
action,  suit,  or  proceeding)  is  asserted  by  such  director,  officer,  or
controlling person in connection with the securities being registered, the small
business  issuer will, unless in the opinion  of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate  jurisdiction
the  question whether  such indemnification  by it  is against  public policy as
expressed in the  Act and will  be governed  by the final  adjudication of  such
issue.
 
    The undersigned Registrant hereby undertakes that it will:
 
    (1)  for  determining  any liability  under  the Securities  Act,  treat the
information  omitted  from  the  form  of  prospectus  filed  as  part  of  this
Registration  Statement in reliance  upon Rule 430A  and contained in  a form of
prospectus filed by the Registrant under Rule 424(b)(1), or (4), or 497(h) under
the Securities Act as  part of this  Registration Statement as  of the time  the
Commission  declared  it effective,  shall be  deemed to  be a  new registration
statement relating to the securities offered  therein, and the offering of  such
securities  at that time  shall be deemed  to be the  initial bona fide offering
thereof.
 
    (2) for  determining any  liability  under the  Securities Act,  treat  each
post-effective   amendment  that  contains  a  form   of  prospectus  as  a  new
registration statement for the securities offered in the Registration Statement,
and that  offering of  the securities  at that  time as  the initial  bona  fide
offering of those securities.
 
                                      II-5
<PAGE>
                                   SIGNATURES
 
   
    In  accordance  with  requirements  of  the  Securities  Act  of  1933,  the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements of  filing on Form  SB-2 and authorized  Amendment No. 2  to
this  Registration Statement to be  signed on its behalf  by the undersigned, in
the City of Minneapolis, State of Minnesota, on the 23rd day of May, 1996.
    
 
                                PHOTRAN CORPORATION
 
                                By:            /s/ DAVID E. STEVENSON
                                      -----------------------------------------
                                                 David E. Stevenson
                                               CHIEF EXECUTIVE OFFICER
 
   
    In accordance with the requirements of the Securities Act of 1933, Amendment
No. 2 to this Registration  Statement was signed below on  the 23rd day of  May,
1996 by the following persons in the capacities stated.
    
 
   
By:       /s/ DAVID E. STEVENSON          By:          /s/ PAUL T. FINK
     ---------------------------------         ---------------------------------
            David E. Stevenson                           Paul T. Fink
        CHIEF EXECUTIVE OFFICER AND               CHIEF FINANCIAL OFFICER AND
       DIRECTOR (PRINCIPAL EXECUTIVE           DIRECTOR (PRINCIPAL FINANCIAL AND
                 OFFICER)                             ACCOUNTING OFFICER)
 
Kathleen V. Stevenson   )
Steven King             )  Directors*
Robert S. Clarke        )
 
- ------------------------
    
*This   Registration   Statement  has   been  signed   by  the   undersigned  as
 attorney-in-fact on behalf of each person  so indicated pursuant to a power  of
 attorney duly executed by each such person.
 
                                By:            /s/ DAVID E. STEVENSON
                                      -----------------------------------------
                                                 David E. Stevenson
                                                  ATTORNEY-IN-FACT
 
                                      II-6
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
   
                       SECURITIES AND EXCHANGE COMMISSION
                                    CHICAGO
    
 
   
                                    EXHIBITS
                                       TO
                                AMENDMENT NO. 2
                                       TO
                                   FORM SB-2
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
    
 
                              PHOTRAN CORPORATION
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                                 EXHIBIT INDEX
 
   
<TABLE>
<CAPTION>
EXHIBIT
  NO.                                   DESCRIPTION                               PAGE
- -------     --------------------------------------------------------------------  ----
<C>         <S>                                                                   <C>
   1.1*     Underwriting Agreement, including Representative's Warrant..........
   1.2      Agreement Among Underwriters.
   1.3      Selected Dealer Agreement.
   3.1      Second  Amended and  Restated Articles  of Incorporation  of Photran
            Corporation, effective March 2, 1996.
   3.2      Amended and  Restated  By-Laws  of  Photran  Corporation,  effective
            December 23, 1992, as amended through February 3, 1996.
   4.1      Second  Amended and  Restated Articles of  Incorporation and Amended
            and  Restated  By-Laws  of  Photran  Corporation  as  amended.  (See
            Exhibits 3.1 and 3.2 above).
   4.2      Specimen of Common Stock Certificate (to be filed by Amendment).
   4.3      Warrant  for Purchase of Shares of  Common Stock, dated November 18,
            1992, for the  purchase of  1,700 shares, issued  to Christopher  T.
            Vanyo.  An identical Warrant For Purchase  of Shares of Common Stock
            was granted  to  one other  individual  for the  purchase  of  1,600
            shares.
   4.4*     Common  Stock  Purchase  Warrant,  dated January  5,  1993,  for the
            purchase of  29,500 shares,  issued  to R.  J. Steichen  &  Company.
            Identical  Common Stock Purchase Warrants  in the amounts of 149,964
            shares, 35,000  shares and  105,254  shares were  granted to  R.  J.
            Steichen  & Company  on February  19, 1993,  February 19,  1993, and
            March 17, 1993, respectively.
   4.5      Form of Warrant for  Purchase of Shares  of Common Stock.  Identical
            Warrants  for Purchase of  Shares of Common Stock  in the amounts of
            20,000 shares and 60,000  shares were granted to  a total of  eleven
            individuals on August 8, 1993 and September 23, 1993, respectively.
   4.6*     Common  Stock Purchase  Warrant, dated  September 23,  1993, for the
            purchase of 48,500 shares,  issued to R. J.  Steichen & Company.  An
            identical  Common  Stock Purchase  Warrant in  the amount  of 11,500
            shares was granted  to R.  J. Steichen  & Company  on September  24,
            1993.
   4.7      Form  of  Promissory  Note.  Identical  Notes  totaling  $600,000 in
            principal amount were  executed by Photran  Corporation in favor  of
            ten individuals on September 23, 1993.
   4.8*     Common  Stock  Purchase  Warrant,  dated January  7,  1994,  for the
            purchase of  140,115 shares,  issued to  R. J.  Steichen &  Company.
            Identical  Common Stock Purchase  Warrants in the  amounts of 11,730
            shares and 36,635 shares were granted to R. J. Steichen & Company on
            January 31, 1994 and February 18, 1994, respectively.
   4.10     Stock Purchase Warrant for 75,000 shares of Common Stock, dated  May
            1, 1995, granted to Steven King.
   4.11     Promissory  Note, dated May 1, 1995, executed by Photran Corporation
            in favor of Steven King.
   4.12     Promissory Note, dated May 26, 1995, executed by Photran Corporation
            in favor of Bank of America National Trust and Savings  Association,
            dated May 26, 1995.
   4.13     Form  of Warrant for  Purchase of Shares  of Common Stock. Identical
            Warrants for Purchase of  Shares of Common Stock  were granted to  a
            total  of 28 individuals on October 15,  1995 to purchase a total of
            400,000 shares.
   4.14     Form of Secured  Promissory Note. Identical  Notes were executed  by
            Photran  Corporation in favor of 28  individuals on October 15, 1995
            for a total principal amount of $4,000,000.
</TABLE>
    
<PAGE>
   
<TABLE>
<CAPTION>
EXHIBIT
  NO.                                   DESCRIPTION                               PAGE
- -------     --------------------------------------------------------------------  ----
<C>         <S>                                                                   <C>
   4.15     Agent's Warrant to  Purchase 40,000  shares of  Common Stock,  dated
            October   31,  1995,  granted  to   John  G.  Kinnard  and  Company,
            Incorporated.
   5.1      Opinion of Henson & Efron, P.A. (to be filed by Amendment).
  10.1      Contract  Agreement  for  the  Joint  Venture  of  Shenzhen  Fortune
            Conductive  Glass  Company,  Ltd., between  Photran  Corporation and
            Shenzhen Wabo (Group) Company, Limited.
  10.2      License  Agreement   between   Photran   Corporation   and   Applied
            Elastromerics dated May 30, 1991, as amended.
  10.3      Office  Warehouse Lease between  Owobopte Rehabilitation Industries,
            Inc. and Photran Corporation dated July 1991
  10.4      Photran Corporation 1992 Stock Option Plan..........................
  10.5      Form of  Incentive  Option  Agreement.  Identical  Incentive  Option
            Agreements  were entered  into with 66  employees for  purchase of a
            total of 76,250 shares.
  10.6      Employment  Agreement  between  David   E.  Stevenson  and   Photran
            Corporation dated January 1, 1993.
  10.7      Form  of  Bridge  Loan  Agreement.  Identical  Loan  agreements were
            entered into  between Photran  Corporation  and ten  individuals  on
            September 23, 1993 for a total principal amount of $600,000.
  10.8      Working Capital Guarantee Program Borrower Agreement between Photran
            Corporation   and  Bank  of  America   National  Trust  and  Savings
            Association, dated September 1, 1994................................
  10.9      Loan Agreement, dated May 1,  1995, between Photran Corporation  and
            Steven King.
  10.10     Eximbank-Guaranteed   Line  of  Credit   Agreement  between  Photran
            Corporation  and  Bank  of   America  National  Trust  and   Savings
            Association dated May 26, 1995, as amended..........................
  10.11     Guaranty  of indebtedness dated  May 26, 1995,  executed by David E.
            Stevenson in favor  of Bank  of America National  Trust and  Savings
            Association.
  10.12     Irrevocable  Letter of Credit issued by  China Merchants Bank at the
            request of Shenzhen WABO Group Co.  Ltd. for the benefit of  Photran
            Corporation.........................................................
  10.13     Distribution  Agreement  between  Photran  Corporation  and Yorkwell
            Company Limited dated September 6, 1994.............................
  10.14     Form of Subscription and Loan Agreement. Identical Subscriptions and
            Loan agreements were entered into with 28 individuals on October  25
            or 31, 1995 for a total principal amount of $4,000,000.
  10.15     Office  Warehouse  Lease  between  Sparta  Foods,  Inc.  and Photran
            Corporation dated December 21, 1995.
  10.16     Amended and Restated Bridge Loan  Agreement between Steven King  and
            Photran Corporation dated March 15, 1996.
  10.17     Forms of Lockup Agreements..........................................
  11.1*     Statement re Computation of Per Share Earnings......................
  23.1      Consent of Henson & Efron, P.A. (included in Exhibit 5.1).
  23.2*     Consent of Deloitte & Touche LLP....................................
  25.1      Powers of Attorney..................................................
</TABLE>
    
 
- ------------------------
 
*   Denotes documents filed herewith.
<PAGE>
                                                                    EXHIBIT 11.1
 
                              PHOTRAN CORPORATION
                     PER SHARE EARNINGS (LOSS) COMPUTATIONS
 
<TABLE>
<CAPTION>
                                                                                          THREE MONTHS ENDED
                                                               YEARS ENDED                    MARCH 31,
                                                      -----------------------------  ----------------------------
                                                           1994           1995           1995           1996
                                                      --------------  -------------  -------------  -------------
                                                                                             (UNAUDITED)
<S>                                                   <C>             <C>            <C>            <C>
PRIMARY EPS:
  Weighted average number of common shares
   outstanding......................................       2,818,494      2,837,323      2,837,323      2,837,323
 
  Common stock equivalents from assumed exercise of
   options and warrants.............................         197,146        496,791        496,791        496,791
                                                      --------------  -------------  -------------  -------------
Total Shares........................................       3,015,640      3,334,114      3,334,114      3,334,114
                                                      --------------  -------------  -------------  -------------
                                                      --------------  -------------  -------------  -------------
Net Income (Loss)...................................  $   (1,405,035) $      50,013  $     (95,031) $      79,029
                                                      --------------  -------------  -------------  -------------
                                                      --------------  -------------  -------------  -------------
Per Common Share....................................  $        (0.47) $        0.02  $       (0.03) $        0.02
                                                      --------------  -------------  -------------  -------------
                                                      --------------  -------------  -------------  -------------
</TABLE>
 
    NET  INCOME  (LOSS) PER  COMMON AND  COMMON EQUIVALENT  SHARE --  Net income
(loss) per common and common equivalent share is computed by dividing net income
(loss) by the weighted average number of common stock and dilutive common  stock
equivalents  outstanding. The total weighted average number of common and common
equivalent shares outstanding has  been adjusted to give  effect to the  reverse
stock  split authorized  by the Company's  shareholders on March  2, 1996, which
will not  become effective  until  a proposed  initial  public offering  of  the
Company's  common stock  is allowed  to become  effective by  the Securities and
Exchange Commission. Common stock equivalents result from dilutive stock options
and warrants.  Common  equivalent shares  are  not  included in  the  per  share
calculations  when the effect  of their inclusion  would be antidilutive, except
that, in accordance with Securities and Exchange Commission requirements, common
and common equivalent  shares issued  during 12  months prior  to the  Company's
proposed  initial public offering  have been included  in the calculation (using
the treasury stock method based on  an assumed initial public offering price  of
$8.50  per share) as if they were outstanding for all periods presented. The net
income (loss) per common share will change if the actual initial public offering
price differs from the assumed initial public offering price per share  utilized
in  this  calculation. Fully  diluted earnings  (loss) per  common share  is not
presented because of its antidilutive effect.
<PAGE>
Securities and Exchange Commission
Midwest Regional Office
500 West Madison Street, Suite 1400
Chicago, IL 60661-2511
 
                                 April 30, 1996
 
RE:  PHOTRAN CORPORATION (THE "COMPANY")
     COMMISSION FILE NO. 333-02700C
     OUR FILE: P405/29521
 
Ladies and Gentlemen:
 
    On behalf of the Company, enclosed for filing please find Amendment No. 1 to
Form  SB-2 previously filed with the Commission on March 22, 1996. In accordance
with Rule 472 of Regulation C, attached are 3 complete copies with exhibits, one
of which has been manually signed, and eight additional copies without exhibits,
five  of  which  have  been  marked  to  show  the  changes  from  the  original
registration statement.
 
    Should  you have any  questions with respect to  this filing, please contact
the undersigned.
 
                                          Very truly yours,
                                          Henson & Efron, P.A.
                                          Jeffrey N. Saunders
 
cc:  Nasdaq
    David Stevenson
    Paul Fink
    Steven King
    Robert S. Clarke
    Jerry Johnson
    D. William Kaufman
    Ann Wheelock
<PAGE>
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