EXHIBIT 99.2

                              DEVELOPMENT AGREEMENT

This DEVELOPMENT AGREEMENT ("AGREEMENT"), effective as of September 6, 2001, by
and between Canon Inc., a Japanese corporation having its principal place of
business at 30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 146-8501, Japan ("CANON")
and Zygo Corporation, a Delaware corporation having its principal place of
business at 21 Laurel Brook Road, P.O. Box 448, Middlefield, Connecticut
06455-0448, U.S.A. ("ZYGO"), each sometimes referred to hereinafter as a "PARTY"
and jointly as the "PARTIES" to this AGREEMENT,

                                   WITNESSETH:

WHEREAS, CANON has been engaged in the design, development, manufacture and
sales of certain lithography tools such as steppers, scanners and aligners;

WHEREAS, ZYGO has expertise in the field of interferometric metrology;

WHEREAS, CANON and ZYGO have entered into the NON-DISCLOSURE AGREEMENT as of
June 6, 2001 under which the PARTIES have disclosed their information of a
confidential nature with each other and have been continuing feasibility studies
for cooperation in the development of certain interferometers; and

WHEREAS, CANON and ZYGO have mutual interests in cooperatively developing said
interferometers;

NOW, THEREFORE in consideration of the premises and the covenants herein
contained, the PARTIES agree as follows:

ARTICLE 1. DEFINITIONS

1.1   The term "TARGET PRODUCT" as used herein shall mean the following
      products:

      (1)   A figure measurement machine identified by the Parties as "Machine
            1" specified in EXHIBIT A attached hereto and of which fundamental
            specifications and requirement are specified in EXHIBIT A attached
            hereto; and which machine fully meets the PHASE 1 FINAL
            SPECIFICATIONS (as defined in Section 1.4 below) ("PHASE 1 TARGET
            PRODUCT"); and

      (2)   an interferometerery unit specified in EXHIBIT A to be developed;
            and which fully meets the PHASE 2 FINAL SPECIFICATIONS (as defined
            in Section 1.4 below) ("PHASE 2 TARGET PRODUCT").

1.2   The term "PROJECT" as used herein shall mean all the works to be performed
      by both PARTIES pursuant hereto in designing, developing, making and
      evaluating the TARGET PRODUCT. PROJECT shall be consisting of PHASE 1, for
      model concept and proof of principle ("Step 1 of PHASE 1") and development
      of the PHASE 1 TARGET PRODUCT ("Step 2 of PHASE 1"), and PHASE 2, for
      development of the PHASE 2



      TARGET PRODUCT; and of which details are fully described in EXHIBIT A
      attached hereto.

1.3   The term "DRAFT SPECIFICATIONS" as used herein shall mean the preliminary
      specifications of each of the PHASE 1 TARGET PRODUCT and the PHASE 2
      TARGET PRODUCT (respectively, "PHASE 1 DRAFT SPECIFICATIONS" and "PHASE 2
      DRAFT SPECIFICATIONS") which are provided by CANON under PHASE 1 and PHASE
      2 of the PROJECT. The DRAFT SPECIFICATIONS shall be expressly included in
      the Confidential Information (as defined in EXHIBIT C attached hereto) of
      CANON.

1.4   The term "FINAL SPECIFICATIONS" as used herein shall mean the definitive
      and finalized specifications of each of the PHASE 1 TARGET PRODUCT and the
      PHASE 2 TARGET PRODUCT (respectively, "PHASE 1 FINAL SPECIFICATIONS" and
      "PHASE 2 FINAL SPECIFICATIONS") which are initially proposed by ZYGO based
      upon the DRAFT SPECIFICATIONS, evaluated by the PARTIES and finally agreed
      upon by both PARTIES in writing under the PROJECT. The FINAL
      SPECIFICATIONS shall be included in the RESULTS.

1.5   The term "RESULTS" as used herein shall mean any and all results obtained
      by a PARTY or the PARTIES through performance of the PROJECT, including
      without limitation, working samples, prototypes and drawings of the TARGET
      PRODUCT and related technology, knowledge and know-how obtained through
      performance of the PROJECT. The term "RESULTS" shall expressly include the
      FINAL SPECIFICATIONS, TARGET PRODUCT, DELIVERABLES and INVENTION.

1.6   The term "DELIVERABLES" as used herein shall mean the items to be
      delivered by either PARTY to the other PARTY under Step 1 of the PHASE 1
      of the PROJECT ("PHASE 1 Step 1 DELIVERABLES"), Step 2 of the PHASE 1 of
      the PROJECT ("PHASE 1 Step 2 DELIVERABLES"), or PHASE 2 of the PROJECT
      ("PHASE 2 DELIVERABLES") and which are specified in EXHIBIT A attached
      hereto.

1.7   The term "INVENTION" as used herein shall mean any and all inventions,
      discoveries, improvements, designs, ideas or other creations, whether or
      not protectable through patent, utility model, copyright, trade secret,
      mask work right or other intellectual property rights, which are
      conceived, developed, reduced to practice or acquired solely by a PARTY or
      jointly by the PARTIES during the term of this AGREEMENT specifically
      while performing work in carrying out the PROJECT.

1.8   The term "EFFECTIVE DATE" shall mean September 6, 2001.

ARTICLE 2. PERFORMANCE OF THE PROJECT

2.1   At the commencement of the PROJECT, both PARTIES hereby expressly
      acknowledge that both PARTIES are uncertain whether the PARTIES will
      complete the PROJECT and achieve the results of the PROJECT.



2.2   ZYGO and CANON shall use their good faith effort to carry out the PROJECT
      in accordance with the following schedule.

      PHASE 1: Step 1 - Model Concept (Design Proof on paper):
                        From 2001/4Q
                        (note: this date excludes the development plans for
                        PHASE 2 TARGET PRODUCT, which is 2003/4Q)

               Step 2 - Development of PHASE 1 TARGET PRODUCT:
                        To 2003/4Q

      PHASE 2: The PARTIES shall separately agreed upon the schedule during
      their performance of PHASE 1 of the PROJECT.

      A working team shall be formed in ZYGO for carrying out the PROJECT. CANON
      agrees to cooperate with ZYGO in ZYGO's performance of the PROJECT.
      Outline of the work to be performed by respective PARTIES is described in
      EXHIBIT A attached hereto.

2.3   The PARTIES acknowledge that each PARTY agrees to deliver to the other
      PARTY the DELIVERABLES as specified in EXHIBIT A attached hereto under
      Step 1 of PHASE 1 of the PROJECT, Step 2 of PHASE 1 of the PROJECT, PHASE
      2 of the PROJECT, respectively.

2.4   The PARTIES agree to have periodical and occasional discussions for
      exchanging information relating to the PROJECT in order to accelerate the
      progress of the PROJECT.

2.5   Each PARTY shall provide the other PARTY with the RESULTS obtained through
      the performance of the PROJECT promptly after such RESULTS have been
      obtained. Except as expressly provided in Article 3 hereof, ZYGO shall not
      provide, deliver or transfer its RESULT to any third party other than
      CANON during the term of the PROJECT.

2.6   PHASE 1 of the PROJECT shall be deemed successfully completed when CANON
      determines to enter into PHASE 2 of the PROJECT after its evaluation of
      all the PHASE 1 (Step 1 and Step 2) DELIVERABLES of ZYGO. In the event
      CANON determines not to enter into PHASE 2 of the PROJECT after its
      evaluation of all the PHASE 1 (Step 1 and Step 2) DELIVERABLES of ZYGO,
      CANON shall have the right to terminate the PROJECT and enforce its rights
      under Section 6.6 below. In addition to the foregoing, CANON shall have
      the right to inspect the PHASE 1 (Step 2) DELIVERABLES of ZYGO to
      determine whether they meet the PHASE 1 FINAL SPECIFICATIONS. In the event
      the PHASE 1 (Step 2) DELIVERABLES fail to meet the PHASE 1 FINAL
      SPECIFICATIONS, CANON shall have the right to have ZYGO modify such PHASE
      1 (Step 2) DELIVERABLES of ZYGO so that they meet the PHASE 1 FINAL
      SPECIFICATIONS. The foregoing procedure shall be performed until CANON
      accepts all PHASE 1 (Step 2) DELIVERABLES. In the event CANON accept the
      PHASE 1



      (Step 2) DELIVERABLES of ZYGO, such DELIVERABLES shall be deemed to be the
      PHASE 1 TARGET PRODUCT.

      PHASE 2 of the PROJECT shall be deemed completed when CANON accept the
      PHASE 2 DELIVERABLES of ZYGO as the PHASE 2 TARGET PRODUCT which fully
      meets the PHASE 2 FINAL SPECIFICATIONS. In the event CANON does not accept
      the PHASE 2 DELIVERABLES of ZYGO as PHASE 2 TARGET PRODUCT, CANON shall
      have the right to terminate the PROJECT and enforce its rights under
      Section 6.6 below, provided that CANON's sole ground for such
      non-acceptance of the PHASE 2 DELIVERABLES of ZYGO shall be such ZYGO's
      PHASE 2 DELIVERABLES' non-compliance with the PHASE 2 FINAL
      SPECIFICATIONS. In the event CANON accept the PHASE 2 DELIVERABLES of
      ZYGO, such DELIVERABLES shall be deemed to be the PHASE 2 TARGET PRODUCT.
      The term of the PROJECT shall be from the EFFECTIVE DATE to the date of
      CANON's notification of the acceptance of the PHASE 2 DELIVERABLES of
      ZYGO, unless otherwise sooner terminated under this AGREEMENT.

      Notwithstanding the foregoing, in the event CANON decides to adopt any
      PHASE 1 (Step 2) DELIVERABLES or PHASE 2 DELIVERABLES having any
      non-compliance with the FINAL SPECIFICATIONS as a commercial level product
      and notify ZYGO of its intent so in writing, such DELIVERABLES shall be
      deemed to be a premature commercial level TARGET PRODUCT ("PREMATURE
      TARGET PRODUCT") and Section 6.1 shall apply to such PREMATURE TARGET
      PRODUCT as if it were named in the place of the TARGET PRODUCT and ZYGO
      shall make all necessary assistance to CANON so that CANON can
      commercially use such PREMATURE TARGET PRODUCT; provided, however, that
      such adoption of PREMATURE TARGET PRODUCT shall not relieve ZYGO from any
      of its obligations under this AGREEMENT, including without limitation, its
      obligation to modify such DELIVERABLES to meet the FINAL SPECIFICATIONS
      pursuant to the procedure set forth herein.

2.7   In addition to the foregoing, CANON shall have the right to terminate the
      PROJECT at any time with or without cause. Upon such termination which has
      occurred solely for CANON's reasons, CANON agrees to pay ZYGO on timing
      separately agreed upon by the PARTIES the actual costs incurred by ZYGO
      solely from its performance of the PHASE 1 of the PROJECT by the time of
      such termination and not paid by CANON to ZYGO, plus costs solely arising
      out of the occurrence of such termination (e.g., cancellation fee for
      outside materials, orders and services); provided, however, that ZYGO
      shall promptly provide written documentation which sufficiently specifies
      details of the costs and proves the correctness of the calculation of the
      amount of such costs and CANON agreed it is reasonable costs of such
      termination. The total amount of the fee to be paid to ZYGO for each Step
      1 and Step 2 of PHASE 1 of the PROJECT pursuant to this AGREEMENT shall
      not exceed Seven Million and Eight Hundred Ninety Thousand U.S. Dollars
      (US$7,890,000) for Step 1 Phase 1 and Twenty One Million and Eight Hundred
      Thousand US Dollars (US$21,800,000) for Step 2 of Phase 1 except as
      contemplated by Section 4.1.3 (3).



ARTICLE 3. SUBCONTRACT

3.1   ZYGO may assign any of its task under the PROJECT to its subcontractor
      subject to the prior written consent of CANON and disclose Confidential
      Information (as defined in the EXHIBIT C) of CANON to such subcontractor
      only for the purpose of carrying out such task, subject to terms and
      conditions of this AGREEMENT (including without limitation,
      confidentiality) and subject further to CANON's prior written consent
      thereto.

3.2   In the event that ZYGO assigns its task of the PROJECT to its
      subcontractor, ZYGO shall execute a written agreement with such
      subcontractor which at least sets forth:

      (a)   all rights, titles and interests in and to all materials, devices,
            notebooks, documents and other items made by such subcontractor in
            carrying out such task, and all inventions, discoveries,
            improvements, designs, ideas, technical data, devices, steps, works,
            software, equipment or other creations, whether or not protectable
            or protected through patent, utility model, copyright, trade secret,
            mask works or other intellectual property rights, which are
            conceived, developed, reduced to practice or acquired by such
            subcontractor in carrying out such task (the "SUBCONTRACTOR
            RESULTS") shall be assigned and transferred to ZYGO so that they
            shall be treated under the terms and conditions of this AGREEMENT;
            and

      (b)   such subcontractor shall bear the same confidentiality obligations
            and other restrictions as set forth in this AGREEMENT with respect
            to the Confidential Information (as defined in EXHIBIT C) of CANON
            and the SUBCONTRACTOR RESULTS, provided that section 1-(2) of
            EXHIBIT C shall not apply to the SUBCONTRACTOR as to Confidential
            Information of CANON and the SUBCONTRACTOR RESULTS.

3.3   All activities and works performed by such subcontractor shall be
      considered to be performed by ZYGO for the purpose hereof, and the
      foregoing permission to assign its task of the PROJECT to subcontractors
      shall not relieve ZYGO from performing hereunder.

3.4   In the event that ZYGO assigns any of its task under the PROJECT to its
      subcontractor under terms and conditions different from Sections 3.1
      through 3.3 above, both Parties shall clarify and agree to the different
      or additional terms and conditions in writing.

ARTICLE 4. DEVELOPMENT FEE

4.1   As to the PHASE 1 of the PROJECT,

      4.1.1 CANON shall bear all its costs and expenses incurred by itself
            relating to its performance of the PROJECT.

      4.1.2 In full and complete consideration of Step 1 of PHASE 1 of the
            PROJECT performed by ZYGO hereunder, including without limitation,
            the costs of the



            PHASE 1 (Step 1) DELIVERABLES of ZYGO, CANON agrees to pay to ZYGO
            Seven Million Eight Hundred and Ninety Thousand U.S. Dollars
            (US$7,890,000) provided however that CANON shall not be required to
            pay to ZYGO the amount of Six Hundred and Ninety Nine Thousand Four
            Hundred Fifty Eight U.S. Dollars (US$699,458) which has been paid by
            CANON to ZYGO as part of the cost for the Step 1 of PHASE 1 of the
            Project as of the execution date hereof pursuant to the Letter of
            Intent dated June 7, 2002. Therefore, after the Execution date
            hereof, CANON shall pay the balance, Seven Million One Hundred
            Ninety Thousand Five Hundred and Forty Two U.S. Dollars
            (US$7,190,542) for the Step 1 of PHASE 1 of the PROJECT in
            accordance with the following payment schedule subject to ZYGO's
            issuance of the invoice prior to each payment due date:

            (i)   Three Million Eight Hundred Thousand Five Hundred and Forty
                  Two US Dollars (US$3,800,542) within thirty (30) days of
                  CANON's receipt of a fully executed original copy of this
                  AGREEMENT;

            (ii)  One Million and Five Hundred Thousand US Dollars
                  (US$1,500,000) by October 30, 2002; and

            (iii) One Million and Eight Hundred Ninety Thousand US Dollars
                  (US$1,890,000) within thirty (30) days of CANON's final
                  decision (acceptance or non-acceptance) with respect to Step 1
                  of the PHASE 1 of the PROJECT pursuant to Section 2.6.

      4.1.3 In full and complete consideration of Step 2 of PHASE 1 of the
            PROJECT performed by ZYGO hereunder, including without limitation,
            the costs of the PHASE 1 (Step 2) DELIVERABLES of ZYGO, CANON agrees
            to pay ZYGO on a monthly basis the development cost incurred by ZYGO
            solely from its performance of Step 2 of the PHASE 1 of the PROJECT
            after August 1, 2002 subject to the following subsections (1)
            through (3) hereof. The material cost includes the fees paid by ZYGO
            to subcontractors and consultants and shall include an overhead rate
            of 10%. The general and administrative rate will be 16.3% applied to
            all cost incurred by ZYGO under the contract. ZYGO shall use its
            best effort to break down the development cost to the following
            items: labor cost (including those of the subcontractors) with work
            hours and overhead thereof; cost of materials and overhead thereof;
            and general and administrative expense solely allocated to the Step
            2 of the PHASE 1 of the PROJECT. In principle, the labor cost shall
            be calculated by the following formula.

            The hourly rate for each engineer who performs the Step 2 of PHASE 1
            of the PROJECT (the "ENGINEER")

                                        x

            Hours of performance of the Step 2 of PHASE 1 of the PROJECT
            (expressly excluding the hours of the work other than Step 2 of
            PHASE 1 of the PROJECT) in a month

            (1)   Within five (5) days of the end of each month until the
                  completion of the Step 2 of the PHASE 1 of the PROJECT, ZYGO
                  shall submit an invoice,



                  which includes the breakdown identifying the costs of the
                  materials of the PHASE 1 TARGET PRODUCT. The Invoice shall be
                  made and submitted by ZYGO in accordance with the forms
                  attached hereto as the EXHIBIT E. CANON pays for each invoice
                  within thirty (30) days of the receipt thereof; provided,
                  however, that CANON may suspend the payment if CANON has
                  reasonable doubt in the correctness of the development cost
                  and in such event ZYGO shall provide CANON with documentation
                  which sufficiently proves the correctness thereof.

            (2)   In no event aggregated amount of the development cost paid by
                  CANON to ZYGO for the Step 2 of the PHASE 1 of the PROJECT
                  hereunder shall exceed Twenty One Million Eight Hundred
                  Thousand US Dollars (US$21,800,000).

            (3)   If ZYGO believes the estimated total cost of the Step 2 of
                  PHASE 1 of the PROJECT will exceed the amount set forth in
                  subsection (2) of this Section 4.1.3 above or If ZYGO believes
                  the actual cost for Step 1 of PHASE 1 will exceed the total
                  amount set forth in Section 4.1.2 hereof, ZYGO shall promptly
                  notify CANON, and ZYGO and CANON will enter into a good faith
                  discussion. If CANON and ZYGO are unable to agree on a
                  contract price adjustment, this AGREEMENT can be terminated by
                  either PARTY without liability to either PARTY except for the
                  remedies under Section 2.7 and 6.6 which will take effect.

4.2   As to the PHASE 2 of the PROJECT, the PARTIES shall separately agree upon
      in writing the payment conditions for the PHASE 2 of the PROJECT during
      the period of the PHASE 1 of the PROJECT.

4.3   The PARTIES hereby expressly acknowledge that CANON shall have no
      liability and obligation to pay any consideration or fee to ZYGO for the
      PHASE 1 of the PROJECT except as expressly provided in Sections 4.1.2 and
      4.1.3 above. Notwithstanding anything contained herein to the contrary, in
      the event this AGREEMENT is sooner terminated pursuant to Sections 2.6,
      2.7, 10.2 or 10.3, CANON shall be under no obligation of paying any
      compensation or fee to ZYGO after such termination, except as expressly
      provided in Section 2.7.

4.4.1 As to the payment of the Step 1 of the PHASE 1 of the PROJECT, certain
      reasonable period before the payment date of each installment of the
      payments, ZYGO shall provide CANON with an invoice which is necessary to
      prove that all of the payment to be made by CANON to ZYGO pursuant to
      Section 4.1.2 above will be used only for the performance of the Step 1 of
      the PHASE 1 of the PROJECT. The form of the invoice shall be attached
      hereto as EXHIBIT E. In the event both PARTIES proceed to the PHASE 2 of
      the PROJECT pursuant to Section 2.6 above, ZYGO shall provide the report
      in the same manner as set forth herein for the PHASE 2 of the PROJECT on
      timing separately agreed upon by the PARTIES prior to the first payment
      thereof.

4.4.2 As to the payment of the Step 2 of the PHASE 1 of the PROJECT, ZYGO shall
      provide the invoice set forth in Section 4.1.3 (1) so that it can
      sufficiently prove that the amount



      of the development cost specified in the invoice was consumed solely for
      the performance of the Step 2 of the PHASE 1 of the PROJECT.

4.5   For customs purposes, in the event ZYGO delivers the RESULTS to CANON
      hereunder, ZYGO shall accompany the RESULTS with an invoice specifying
      actual costs and expenses for each of the RESULTS.

4.6   Payments made by CANON under this AGREEMENT shall be made to ZYGO by wire
      transfer to the following bank account:

            (Bank Name)          Fleet National Bank
            (Branch Name)        Fleet National Bank, New York
            (Bank Address)       ABA No. 021300019
            (Telex No.)          221086
            (Account Number)     93691635

ARTICLE 5. CONFIDENTIALITY

      The PARTIES hereby agrees that any and all information of a confidential
      and proprietary nature to be disclosed from either PARTY to the other
      PARTY under the PROJECT shall be treated in accordance with the terms set
      forth in EXHIBIT C attached hereto.

ARTICLE 6. OWNERSHIP

6.1   Any and all RESULTS shall be jointly vested in the both PARTIES, and
      subject to Sections 6.2 through 6.7 and Article 7 below, each PARTY is
      free to use and utilize any and all RESULTS without restriction.
      Notwithstanding anything contained herein to the contrary, any and all
      right, title and interest in and to any sample of the TARGET PRODUCT shall
      be solely vested in CANON, and ZYGO shall expressly agree that CANON can
      freely use, sell or otherwise dispose of such samples of the TARGET
      PRODUCT without any restriction, in all instances to be used by CANON or a
      third party solely for their intended use; provided, that the third party
      shall not acquire any intellectual property rights, or rights to any
      Confidential Information from ZYGO as a result of the use, sale or
      disposition of any such samples.

6.2   Notwithstanding Section 6.1 above, any and all applications for patents
      and utility models for any INVENTION made solely by one PARTY through
      performance of the PROJECT, and any and all patents and utility models
      issued on or registered from applications for such INVENTION shall be
      solely vested in such inventing PARTY subject to Sections 6.6, 6.7 and 7.4
      below.

6.3   Any and all applications for patents and utility models for any INVENTION
      made jointly by the both PARTIES through performance of the PROJECT, and
      any and all patents and utility models issued on or registered from
      applications for such INVENTION shall be jointly vested in and owned
      equally by the both PARTIES. The PARTIES agree to enter into discussions
      for the filing, prosecution and maintenance of such application and



      patents and utility models jointly owned by the PARTIES, and any cost and
      expense required for such filing, prosecution and maintenance shall be
      equally borne by the PARTIES. With respect to such jointly owned patents
      and utility models including applications therefor, each joint owner PARTY
      may, without the other joint owner PARTY's consent and without any
      compensation to the other joint owner PARTY, exercise and practice any
      rights thereunder by itself, and may grant a non-exclusive license
      thereunder to one or more third parties in any country of the world.
      License fees, royalties or other consideration obtained under such license
      grant, if any, shall vest in the PARTY who granted such license. Each
      joint owner PARTY shall have the right to make improvements based on such
      jointly owned patents and utility models including applications therefor
      as well as the INVENTION, and all rights and interests in and titles to
      such improvements shall be wholly and solely vested in such joint owner
      PARTY who made the improvements.

6.4   If ZYGO does not desire to file, prosecute, or maintain such application
      and patents and utility models set forth in Sections 6.2 and 6.3 above,
      then ZYGO shall, at no charge, convey, assign, transfer and deliver to
      CANON all of its rights, titles and interests in and to such patents and
      utility models, together with the right to further sell, convey, assign,
      transfer or license such patents and utility models, or any part thereof,
      to any entities in the world. CANON may file such application at its sole
      expense and in its own name as the sole owner, and ZYGO shall have no
      right whatsoever with respect to such application and patents and utility
      models. In any case, ZYGO shall reasonably cooperate in such filing at its
      own expense.

6.5   Notwithstanding anything herein contained to the contrary, if it is
      necessary to pay any compensation to any employee who makes an INVENTION,
      the PARTY who employs such employee shall be solely liable and responsible
      for such compensation.

6.6   In the event (i) CANON determines not to enter into PHASE 2 of the PROJECT
      after its evaluation of all the PHASE 1 (Step 1 and Step 2) DELIVERABLES
      of ZYGO as set forth in Section 2.6 hereof, or (ii) CANON does not accept
      the PHASE 2 DELIVERABLES as the TARGET PRODUCT as set forth in Section 2.6
      hereof, CANON shall have the right to develop, have developed, use,
      manufacture and have manufactured whole or portion of the TARGET PRODUCT
      and the DERIVATIVES with use of the RESULTS and under any and all
      applications for patents and utility models of ZYGO made pursuant to
      Section 6.2 above, any and all patents and utility models issued or
      registered from such applications, any and all ZYGO's preexisting
      intellectual property rights applicable to the TARGET PRODUCT and the
      DERIVATIVES with use of the RESULTS, and/or Confidential Information of
      ZYGO, without any payment to ZYGO; but in all cases, only to the extent
      any such DERIVATIVES are used solely for the same purpose and intended use
      as that of the TARGET PRODUCT. For the purpose of this AGREEMENT, the term
      "DERIVATIVES" shall mean any successor product of the TARGET PRODUCT. In
      such event, CANON may disclose Confidential Information through a
      confidentiality agreement to the extent it is necessary to manufacture the
      TARGET PRODUCT or the DERIVATIVES. That terms and conditions of the
      confidentiality agreement should be



      reasonably acceptable to ZYGO. ZYGO shall grant to CANON a non-exclusive,
      royalty-free, payment-free license for CANON to exercise the right set
      forth in this Section 6.6; provided, however, that such license with
      respect to the patent rights issued on any applications which was filed by
      ZYGO before the EFFECTIVE DATE ("ZYGO PREEXISTING PATENTS") shall be
      royalty-bearing and CANON agrees to pay reasonable royalty to ZYGO for
      such license under the ZYGO PREEXISTING PATENTS, provided further that
      such limitation under this Section 6.6 with respect to the Confidential
      Information of ZYGO shall be effective for five (5) years from the date of
      disclosure of the Confidential Information. Detailed conditions of such
      royalty-bearing license under ZYGO PREEXISTING PATENTS shall be discussed
      and agreed upon by ZYGO and CANON, including the amount of royalty,
      provided further that in no event such amount of the royalty shall exceed
      the reasonable cost of the royalty reflected on a net selling price of the
      TARGET PRODUCT or such product with use of the RESULTS as if ZYGO could
      steadily supply volume production quantities of the TARGET PRODUCT or such
      product with use of the RESULTS to CANON or DESIGNEES (as defined in
      Section 7.1 below) pursuant to Section 7.1 below. Notwithstanding anything
      to the contrary contained in the AGREEMENT, none of the ZYGO PREEXISTING
      PATENTS may be used by CANON for any purpose other than for the
      development and the manufacture of the TARGET PRODUCT or the DERIVATIVES,
      nor may any of the RESULTS or INVENTIONS be used by any other party in the
      development or manufacture of any product (other than a product which is
      used solely by CANON for internal purposes) that directly or indirectly
      competes with ZYGO's core business of metrology products, provided that
      the limitation under this Section 5.5 with respect to the Confidential
      Information of ZYGO shall be effective for five (5) years from the date of
      disclosure of the Confidential Information.

ARTICLE 7. MANUFACTURE AND SUPPLY OF THE TARGET PRODUCT

7.1   After completion of the PROJECT (completion of PHASE 2 of the PROJECT) or
      adoption of the PREMATURE TARGET PRODUCT and upon CANON's request, ZYGO
      shall manufacture and steadily supply to CANON and/or any other entities
      designated by CANON ("DESIGNEES") volume production quantities of whole or
      portion of the TARGET PRODUCT or PREMATURE TARGET PRODUCT (hereinafter
      individually or collectively referred to as "TARGET PRODUCT" in Articles 7
      and 8). Detailed conditions of such supply shall be determined in a
      separate purchase agreement for the TARGET PRODUCT between ZYGO and CANON
      or the DESIGNEES ("PURCHASE AGREEMENT"); provided that the provision of
      this Article 7 shall precede the PURCHASE AGREEMENT.

7.2   So long as CANON and/or DESIGNEES purchase whole or portion of TARGET
      PRODUCT from ZYGO or CANON manufactures or has manufactured the TARGET
      PRODUCT pursuant to Sections 6.6 and 7.4 hereof, ZYGO hereby agrees not to
      assert or enforce against CANON, DESIGNEES, their subsidiaries or
      affiliates and their distributors, dealers, agents and customers any of
      the rights under its patents, patent applications, utility model and
      utility model applications and any intellectual property rights of ZYGO in
      any country of the world with respect to the import, use, sale, offer for



      sale and lease of CANON's products using or containing such TARGET PRODUCT
      or the DERIVATIVES subject in all cases to the compliance with Section 6.6
      above.

7.3   Notwithstanding anything contained herein to the contrary, ZYGO shall not
      sell, ship, supply or distribute to any third parties, or shall not grant
      to any third parties any license to sell, ship, supply or distribute
      (other than the DESIGNEE) the TARGET PRODUCT, any product, tools or system
      incorporating any portion of the TARGET PRODUCT, including those which can
      measure absolute calibration, which product, tools and system shall fall
      into the scope of the EXCLUSIVITY for CANON set forth in Section 1 of
      EXHIBIT B attached hereto, for a period of five (5) years after (i)
      CANON's determination not to enter into PHASE 2 of the PROJECT after the
      evaluation of the PHASE 1 DELIVERABLES as set forth in Section 2.6 above;
      (ii) termination of the PROJECT by CANON's non-acceptance of the PHASE 2
      DELIVERABLES as the PHASE 2 TARGET PRODUCT on the PHASE 2 of the PROJECT
      as set forth in Section 2.6 above; or (iii) the successful completion of
      PHASE 2 of the PROJECT under Section 2.6 above. Such restriction shall not
      be applied to the product, tools and system which is inside the Scope of
      the NON-EXCLUSIVITY set forth in Section 2 of EXHIBIT B attached hereto.
      Consequently, either PARTY shall have the right, freely and independently
      of the PROJECT, to develop and manufacture by itself or jointly with
      others and acquire from any third party whose operations, characteristics,
      features or functions may be similar or identical to, or competitive with
      the TARGET PRODUCT subject to the terms of this AGREEMENT, including this
      Section 7.3.

7.4   In the event ZYGO cannot manufacture and steadily supply to CANON and/or
      DESIGNEE volume production quantities of the TARGET PRODUCT pursuant to
      Section 7.1 above, CANON shall have the right to manufacture the TARGET
      PRODUCT by itself or to have the TARGET PRODUCT manufactured and supplied
      by any third party ("THIRD PARTY MANUFACTURER") to CANON and/or DESIGNEES.
      In either case, ZYGO shall grant to CANON a non-exclusive, royalty-free,
      payment-free license to manufacture, have manufactured the TARGET PRODUCT
      and supply and have supplied the same by the THIRD PARTY MANUFACTURER to
      CANON and/or DESIGNEES, including without limitation, licenses under any
      and all applications for patents and utility models of ZYGO made solely by
      ZYGO pursuant to Section 6.2 above, and any and all patents and utility
      models issued on or registered from applications for such INVENTION, and
      any and all ZYGO's preexisting intellectual property rights applicable to
      the TARGET PRODUCT, and ZYGO also shall provide all necessary assistance
      which enables CANON to enforce its rights aforementioned. Notwithstanding
      the foregoing, such license with respect to the ZYGO PREEXISTING PATENTS
      shall be royalty-bearing and CANON agrees to pay reasonable royalty to
      ZYGO for the license under the ZYGO PREEXISTING PATENTS. Detailed
      conditions of such royalty-bearing license under ZYGO PREEXISTING PATENTS
      shall be discussed and agreed upon by ZYGO and CANON, including the amount
      of royalty; provided, however, that in no event such amount of the royalty
      shall exceed the reasonable cost of the royalty reflected on a net selling
      price of the TARGET PRODUCT as if ZYGO could steadily supply volume
      production quantities of the TARGET PRODUCT to CANON or DESIGNEES pursuant
      to Section 7.1 above.



7.5   In the event CANON determines to enforce its rights to have the TARGET
      PRODUCT manufactured and supplied by the THIRD PARTY MANUFACTURER to CANON
      and/or DESIGNEE pursuant to Section 7.4 above, CANON may disclose
      Confidential Information through a confidentiality agreement to the extent
      it is necessary to manufacture the TARGET PRODUCT or the DERIVATIVES. That
      terms and conditions of the confidentiality agreement should be reasonably
      acceptable to ZYGO.

ARTICLE 8. INTELLECTUAL PROPERTY INDEMNITY

8.1   ZYGO hereby represents and warrants, to its knowledge, that the RESULTS
      and the TARGET PRODUCT and the use thereof, in whole or in part, does not
      constitute infringement or misappropriation of any patent, copyright,
      trade secret or other intellectual property of any third party. This
      representation by ZYGO does not extend to the use or incorporation solely
      of any Confidential Information of CANON or a portion of RESULTS provided
      by CANON. Notwithstanding the foregoing, ZYGO's representation will be
      limited to the case were such infringement or misappropriation is
      judicially determined, if both PARTIES cannot agree, to relate solely and
      directly to the use and application of the intellectual property developed
      by ZYGO specifically in connection with and for use in the PROJECT. This
      representation shall not extend to modifications, additions or alterations
      to the TARGET PRODUCT made by CANON or other third parties.

8.2   In the event that any claim, action, suit or proceeding is brought by any
      third party in any country of the world against CANON, any of its
      subsidiaries or affiliates, or against any distributor, dealer, agent or
      customer of any of them, DESIGNEES, or THIRD PARTY MANUFACTURER (each
      referred to as an "INDEMNIFIED PARTY"), alleging that the RESULTS, TARGET
      PRODUCT or any derivative product manufactured with use of the RESULTS, or
      the use thereof, in whole or in part, constitute at least a part of
      infringement or misappropriation of any patent, copyright, trade secret or
      other intellectual property of such party, ZYGO shall hold the INDEMNIFIED
      PARTY harmless and shall, at its own expense, defend or settle such claim,
      action, suit or proceeding. ZYGO shall pay for all losses, damages and all
      reasonable expenses and costs, including attorney fees and royalties,
      incurred by the INDEMNIFIED PARTY relating to such claim, action, suit or
      proceeding, provided that CANON:

      (a)   notifies ZYGO in writing of any such claim, action, suit or
            proceeding after CANON itself received written notice of it;

      (b)   reasonably cooperates in the defense thereof at ZYGO's expense; and

      (c)   authorizes ZYGO to defend against or settle such claim, action, suit
            or proceeding on behalf of CANON or on behalf of INDEMNIFIED PARTY
            to the extent that CANON has the right to grant such authorization.

      Notwithstanding the foregoing, ZYGO's indemnification will be limited to
      the case were such infringement or misappropriation is judicially
      determined, if both PARTIES cannot agree, to relate solely and directly to
      the use and application of the intellectual property developed by ZYGO
      specifically in connection with and for use in the PROJECT. This



      liability shall not extend to modifications, additions or alterations to
      TARGET PRODUCT made by CANON or other third parties.

8.3   Notwithstanding the foregoing, in the event CANON desires, CANON may
      defend and settle the claim, action, suit or proceeding as set forth in
      Section 8.2 above, receiving full authority therefor from ZYGO, or may
      participate in the defense and/or settlement thereof to whatever extent
      CANON desires, including controlling said defense and/or settlement. In
      any case, all expenses for such defense and/or settlement shall be borne
      by ZYGO; provided, however, that CANON agrees to discuss with ZYGO and
      obtain ZYGO's consent, before taking any decisive action on material
      issues of the defense and/or settlement. If said defense and/or settlement
      is conducted by CANON, ZYGO shall assist CANON at ZYGO's expense upon
      CANON's request.

8.4   If any of the RESULTS, TARGET PRODUCT or any product manufactured with use
      of the RESULTS, in whole or in part, are or, in the opinion of ZYGO or
      CANON, may become the subject of any claim, action, suit or proceeding for
      constituting at least a part of infringement or misappropriation of, or if
      it is judicially determined that the RESULTS, TARGET PRODUCT or any
      product manufactured with use of the RESULTS, in whole or in part,
      constitute at least a part of infringement or misappropriation of, any
      patent, copyright, trade secret or other intellectual property of a third
      party, or if the use of the RESULTS, TARGET PRODUCT or any product
      manufactured with use of the RESULTS, in whole or in part, is as a result
      enjoined, then, ZYGO shall perform either of the following:

      (a)   procure for INDEMNIFIED PARTY the right under such patent,
            copyright, trade secret or other intellectual property right to
            continue to use or sell or otherwise dispose of the RESULTS, TARGET
            PRODUCT or such product manufactured with use of the RESULTS; or

      (b)   alter, change or modify the RESULTS, TARGET PRODUCT or such product
            manufactured with use of the RESULTS so as not to infringe such
            third party's intellectual property, or replace the RESULTS, TARGET
            PRODUCT or such product manufactured with use of the RESULTS with
            non-infringing alternatives, while conforming, as closely as
            possible, to the FINAL SPECIFICATIONS.

      The foregoing remedial actions shall not relieve ZYGO from its obligations
      under Section 8.2 hereof.

8.5   The provisions of this Article 8 shall supersede any contradicting
      provisions provided in the PURCHASE AGREEMENT.

ARTICLE 9. NO LICENSE AND RIGHTS

      Except as expressly provided herein, no license or right, express or
      implied, is hereby conveyed or granted by either PARTY to the other PARTY
      under any patents, utility models, design patents, design registrations,
      copyrights, mask works and trademarks.



ARTICLE 10. TERM AND TERMINATION

10.1  This AGREEMENT shall become effective on the EFFECTIVE DATE and continue
      to be effective until the date of completion of the PROJECT as set forth
      in Sections 2.6 and 2.7 above unless earlier terminated pursuant to
      Section 10.2, 10.3 or 10.4 below.

10.2  In the event CANON determines DELIVERABLES of ZYGO under PHASE 1 of the
      PROJECT does not meet the SPECIFICATIONS provided from CANON, CANON shall
      have the right to terminate this AGREEMENT upon written notice to ZYGO.

10.3  In the event that either PARTY materially breaches any of its obligations
      hereunder, the other PARTY shall have the right to terminate this
      AGREEMENT by giving a written notice thereof to be effective thirty (30)
      days after the receipt of such notice, unless such breaching PARTY cures
      such breach within thirty (30) days of the receipt of such notice. In the
      event that such breaching PARTY cures such breach within such thirty (30)
      day period, there shall be no termination.

10.4  In the event either PARTY becomes insolvent or bankrupt or makes an
      assignment for the benefit of creditors, or a receiver or similar officer
      is appointed to take charge of all or part of such PARTY's assets, the
      other PARTY may terminate this AGREEMENT immediately by giving written
      notice thereof to such PARTY.

10.5  Notwithstanding anything contained herein to the contrary, Sections 4.3
      and Articles 5 through 8 shall survive any termination or expiration of
      this AGREEMENT.

ARTICLE 11. MISCELLANEOUS

11.1  Each PARTY shall comply with all applicable export control laws and
      regulations. In the event that the export of any commodity, software,
      technical data or information by ZYGO to CANON hereunder requires a
      license set forth in the US Export Administration Regulations, as amended
      ("EAR"), ZYGO shall take all necessary steps to obtain such a license and
      shall promptly notify CANON thereof. In the event that the export of any
      commodity, software, technical data or information by ZYGO to CANON
      hereunder requires a written assurance set forth in the EAR, ZYGO shall
      request CANON to issue such written assurance, providing CANON with
      sufficient information therefor. Upon CANON's request, ZYGO shall furnish
      CANON with all necessary assistance, information and documentation,
      including without limitation ECCN (Export Control Classification Number)
      on the Commerce Control List.

11.2  No amendment or change hereof or addition hereto shall be effective or
      binding on the PARTIES unless set forth in writing and executed by a duly
      authorized representative of each of the PARTIES.

11.3  Neither PARTY may assign this AGREEMENT and any of its rights or under
      this AGREEMENT without the prior written consent of the other PARTY, and
      purported assignment without such consent shall have no force or effect.
      Subject to the foregoing,



      this AGREEMENT shall bind and inure to the benefit of the respective
      PARTIES and their successors and assigns.

11.4  In the event that any of the provision of this AGREEMENT shall be held by
      a court or other tribunal of competent jurisdiction to be invalid or
      unenforceable, the remaining portions of this AGREEMENT shall remain in
      full force and effect. The PARTIES shall then endeavor to replace such
      invalid or unenforceable provision with a clause which is the closest to
      the contents of such invalid or unenforceable provision.

11.5  No delay or omission in exercising any right or remedy hereunder shall
      operate as a waiver thereof or of any other right or remedy, and no single
      or partial exercise thereof shall preclude any other or further exercise
      thereof or the exercise of any other right or remedy.

11.6  Neither PARTY shall be liable to the other PARTY for any failure or delay
      in the performance of any of its obligations under this AGREEMENT for the
      period and to the extent such failure or delay is caused by riots, civil
      commotion, wars, hostilities, actions of any government, Act of God,
      earthquakes, floods, storms, fires, accidents, explosions, epidemics, acts
      of public enemy, invasion, strikes, labor disputes, lockouts or other
      similar or different contingencies beyond the reasonable control of the
      respective PARTY. The PARTY affected shall notify the other PARTY in
      writing of the circumstances of force majeure as soon as possible.

11.7  Headings to Articles hereof are to facilitate reference only, do not form
      a part thereof, and shall not in any way affect the interpretation or
      construction hereof.

11.8  Neither PARTY shall be deemed to be an agent of the other PARTY as a
      result of or in any transaction under or relating to this AGREEMENT, and
      neither PARTY shall in any way pledge the other PARTY's credit or incur
      any obligation in or on behalf of such PARTY.

11.9  Any notice which either PARTY desires or is obligated to give to the other
      PARTY hereunder shall be in writing and sent by registered air mail or
      courier, postage prepaid and addressed to the last known address of such
      PARTY which the notice is intended. As of the date hereof, any notice to
      be given to ZYGO shall be addressed to:

          Zygo Corporation:
          21 Laurel Brook Road
          Middlefield, Connecticut 06455-0448, U.S.A
          Attention:  Bruce Robinson
                      President and CEO
                      Facsimile Number: +1-860-347-8372



      As of the date hereof, any notice to be given to CANON shall be addressed
      to:

            Canon Inc.
            30-2, Shimomaruko 3-chome
            Ohta-ku, Tokyo 146-8501, Japan
            Attention: For any provision of this AGREEMENT:
                             Senior General Manager
                             Contracts and Licensing Center
                             Corporate Intellectual Property and
                             Legal Headquarters
                             Facsimile Number: +81-3-3758-8163

                       For all other matters:
                             Masao Kosugi
                             Senior General Manager
                             Semiconductor Production Equipment Group
                             Optical Products Operations
                             Facsimile Number: +81-28-670-5301

      Except as otherwise expressly provided herein, notice shall be deemed to
      have been received on the date when actually received by the receiving
      PARTY. Notice hereunder may be given via facsimile; provided, however,
      that such notice shall be promptly confirmed in writing and sent to the
      receiving PARTY in accordance with procedures set forth above in this
      Section 11.9.

11.10 This AGREEMENT constitutes the entire agreement and understanding between
      the PARTIES on the subject matter hereof, and supersedes and replaces all
      prior written or oral discussions and negotiations between the PARTIES
      regarding such subject matter, including NON-DISCLOSURE AGREEMENT as of
      June 6, 2001 between the PARTIES. Neither PARTY shall be bound by any
      conditions, definitions, warranties and representations, other than as
      expressly provided in this AGREEMENT.

11.11 IN NO EVENT SHALL EITHER PARTY BE LIABLE FOR LOSS OF PROFITS, INDIRECT,
      INCIDENTAL OR CONSEQUENTIAL DAMAGES, WHETHER IN THE EVENT OF TERMINATION,
      BREACH, REPUDIATION OR OTHER EVENT, UNDER ANY THEORY OF LIABILITY, WHETHER
      BASED ON TORT, CONTRACT OR OTHER CAUSE OF ACTION, EVEN IF A PARTY HAS BEEN
      ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.



IN WITNESS WHEREOF, the PARTIES have caused this AGREEMENT to be executed in
duplicate originals by their duly authorized representatives as of the date
first above written.

CANON INC.                                        ZYGO CORPORATION

BY:  /s/ AKIRA TAJIMA                             BY:  /s/ BRUCE ROBINSON
   --------------------------                        ---------------------------
         Akira Tajima                                      Bruce Robinson

TITLE:  Group Executive                           TITLE:  President and CEO
        Optical Products Operations                       ----------------------
        ---------------------------

DATE:  September 11, 2002                         DATE:  September 11, 2002
       ----------------------------                      -----------------------