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      <link:roleType roleURI="http://www.inradoptics.com/role/ScheduleIiValuationAndQualifyingAccountsDetails" id="ScheduleIiValuationAndQualifyingAccountsDetails">
        <link:definition>175 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Details)</link:definition>

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  <element name="AssetHeldAsSecurityPurchasePriceInstallmentPayment" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="inrd_AssetHeldAsSecurityPurchasePriceInstallmentPayment" />

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  <element name="AffiliateOfClarexMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_AffiliateOfClarexMember" />

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  <element name="UsSmallBusinessAdministrationNotePayableMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_UsSmallBusinessAdministrationNotePayableMember" />

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  <element name="ScheduleOfIncomeTaxTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="inrd_ScheduleOfIncomeTaxTable" />

  <element name="DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventory" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="inrd_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsInventory" />

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  <element name="March2012PlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_March2012PlanMember" />

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  <element name="DefinedContributionPlanEmployerMatchingContributionInShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_DefinedContributionPlanEmployerMatchingContributionInShares" />

  <element name="DefinedContributionPlanEmployerMatchingContributionInCash" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="inrd_DefinedContributionPlanEmployerMatchingContributionInCash" />

  <element name="OpticalComponentsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_OpticalComponentsMember" />

  <element name="LaserSystemDevicesAndInstrumentationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_LaserSystemDevicesAndInstrumentationMember" />

  <element name="CustomersInEuropeAsiaJapanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_CustomersInEuropeAsiaJapanMember" />

  <element name="MajorCustomersOneMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_MajorCustomersOneMember" />

  <element name="MajorCustomersTwoMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_MajorCustomersTwoMember" />

  <element name="MajorCustomersThreeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_MajorCustomersThreeMember" />

  <element name="TopFiveCustomersMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_TopFiveCustomersMember" />

  <element name="EquityCompensationPlan2010Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_EquityCompensationPlan2010Member" />

  <element name="EquityCompensationPlan2000Member" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_EquityCompensationPlan2000Member" />

  <element name="WarrantsIssuableOnConversionOfSubordinatedConvertibleNotesMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_WarrantsIssuableOnConversionOfSubordinatedConvertibleNotesMember" />

  <element name="ScheduleOfFinancialInstrumentsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="inrd_ScheduleOfFinancialInstrumentsTable" />

  <element name="ScheduleOfWorkforceReductionTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="inrd_ScheduleOfWorkforceReductionTable" />

  <element name="WorkforceReductionDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_WorkforceReductionDisclosureLineItems" />

  <element name="PercentageReductionInWorkForce" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_PercentageReductionInWorkForce" />

  <element name="AnnualizedSavingsDueToReductionInWorkForce" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" xbrli:balance="credit" substitutionGroup="xbrli:item" id="inrd_AnnualizedSavingsDueToReductionInWorkForce" />

  <element name="ScheduleOfQuarterlyFinancialInformationTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="inrd_ScheduleOfQuarterlyFinancialInformationTable" />

  <element name="DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_DocumentAndEntityInformationAbstract" />

  <element name="NatureOfBusinessAndOperationsAndSummaryOfSignificantAccountingPoliciesAndEstimatesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_NatureOfBusinessAndOperationsAndSummaryOfSignificantAccountingPoliciesAndEstimatesLineItems" />

  <element name="April2013PlanMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_April2013PlanMember" />

  <element name="FinancialInstrumentsDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_FinancialInstrumentsDisclosureLineItems" />

  <element name="OperatingLossCarryforwardsExpirationDateDescription" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_OperatingLossCarryforwardsExpirationDateDescription" />

  <element name="ExercisePriceRangeTheeMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_ExercisePriceRangeTheeMember" />

  <element name="QuarterlyFinancialInformationLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_QuarterlyFinancialInformationLineItems" />

  <element name="OffsetPayrollSavingsAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="inrd_OffsetPayrollSavingsAmount" />

  <element name="IncreaseDecreaseInAccruedInterestOnRelatedPartyConvertibleNotesPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" xbrli:balance="debit" substitutionGroup="xbrli:item" id="inrd_IncreaseDecreaseInAccruedInterestOnRelatedPartyConvertibleNotesPayable" />

  <element name="TerminationAndRelocationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_TerminationAndRelocationMember" />

  <element name="NorthvaleFacilityExpendituresMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_NorthvaleFacilityExpendituresMember" />

  <element name="MovingAndOtherCostsMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_MovingAndOtherCostsMember" />

  <element name="GoodwillDisclosureLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_GoodwillDisclosureLineItems" />

  <element name="AccountsPayableAndAccruedLiabilitiesLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="inrd_AccountsPayableAndAccruedLiabilitiesLineItems" />
</schema>

