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	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/EarningsPerShareDetails" id="EarningsPerShareDetails">
	  <link:definition>00000056 - Disclosure - Earnings Per Share (Details)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/DefinedContributionPlanDetailsNarrative" id="DefinedContributionPlanDetailsNarrative">
	  <link:definition>00000057 - Disclosure - Defined Contribution Plan (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/LeaseCommitmentsDetailsNarrative" id="LeaseCommitmentsDetailsNarrative">
	  <link:definition>00000058 - Disclosure - Lease Commitments (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/LeaseCommitmentsDetails" id="LeaseCommitmentsDetails">
	  <link:definition>00000059 - Disclosure - Lease Commitments (Details)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/ForeignOperationsDetailsNarrative" id="ForeignOperationsDetailsNarrative">
	  <link:definition>00000060 - Disclosure - Foreign Operations (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/SignificantSuppliersAndCustomersDetailsNarrative" id="SignificantSuppliersAndCustomersDetailsNarrative">
	  <link:definition>00000061 - Disclosure - Significant Suppliers and Customers (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
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	  <link:definition>00000062 - Disclosure - Convertible Debentures (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/ConvertibleDebenturesDetails" id="ConvertibleDebenturesDetails">
	  <link:definition>00000063 - Disclosure - Convertible Debentures (Details)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
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	<link:roleType roleURI="http://lightpath.com/role/DerivativeFinancialInstrumentsWarrantLiabilityDetailsNarrative" id="DerivativeFinancialInstrumentsWarrantLiabilityDetailsNarrative">
	  <link:definition>00000064 - Disclosure - Derivative Financial Instruments (Warrant Liability) (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/DerivativeFinancialInstrumentsWarrantLiabilityDetails" id="DerivativeFinancialInstrumentsWarrantLiabilityDetails">
	  <link:definition>00000065 - Disclosure - Derivative Financial Instruments (Warrant Liability) (Details)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/DerivativeFinancialInstrumentsWarrantLiabilityDetails1" id="DerivativeFinancialInstrumentsWarrantLiabilityDetails1">
	  <link:definition>00000066 - Disclosure - Derivative Financial Instruments (Warrant Liability) (Details 1)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
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	<link:roleType roleURI="http://lightpath.com/role/DeferredRevenuecostsInExcesOfBillingsDetailsNarrative" id="DeferredRevenuecostsInExcesOfBillingsDetailsNarrative">
	  <link:definition>00000067 - Disclosure - Deferred Revenue/Costs in Exces of Billings (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/CreditFacilityAndLoanPayableDetailsNarrative" id="CreditFacilityAndLoanPayableDetailsNarrative">
	  <link:definition>00000068 - Disclosure - $2,000,000 Credit Facility and Loan Payable (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/PudongPrivatePlacementDetailsNarrative" id="PudongPrivatePlacementDetailsNarrative">
	  <link:definition>00000069 - Disclosure - Pudong Private Placement  (Details Narrative)</link:definition>
	  <link:usedOn>link:presentationLink</link:usedOn>
	  <link:usedOn>link:calculationLink</link:usedOn>
	  <link:usedOn>link:definitionLink</link:usedOn>
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	<link:linkbaseRef xlink:type="simple" xlink:href="lpth-20140630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Calculation Links" />
	<link:linkbaseRef xlink:type="simple" xlink:href="lpth-20140630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Definition Links" />
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    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValueAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonvestedWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNonvestedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="instant" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardsGrantsInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardsGrantsInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_TotalSharesAbstract" name="TotalSharesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_SharebasedCompensationArrangementBySharebasedPaymentAwardSharesNonvestedNumberOfShares" name="SharebasedCompensationArrangementBySharebasedPaymentAwardSharesNonvestedNumberOfShares" nillable="true" xbrli:periodType="instant" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesGrantsInPeriodGross" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesGrantsInPeriodGross" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodGross" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestedInPeriodGross" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedNumberOfShares" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedNumberOfShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_DefinedContributionPlanDetailsNarrativeAbstract" name="DefinedContributionPlanDetailsNarrativeAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_LeaseCommitmentsDetailsNarrativeAbstract" name="LeaseCommitmentsDetailsNarrativeAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_IncreaseInSquareFootage" name="IncreaseInSquareFootage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_DecreaseInRentExpense" name="DecreaseInRentExpense" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_LeaseCommitmentsDetailsAbstract" name="LeaseCommitmentsDetailsAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_CapitalLeaseImputedInterest" name="CapitalLeaseImputedInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_AmendedPercentageOfDebenturesAllowedToBeConvertedByDebtHolders" name="AmendedPercentageOfDebenturesAllowedToBeConvertedByDebtHolders" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_DebenturesHoldingRelatedParty" name="DebenturesHoldingRelatedParty" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ConversionIncentiveShares" name="ConversionIncentiveShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_PeriodWarrantsExerciseable" name="PeriodWarrantsExerciseable" nillable="true" xbrli:periodType="duration" type="xbrli:durationItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ProbabilityPriceStrike" name="ProbabilityPriceStrike" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_Level3InputsActivityAbstract" name="Level3InputsActivityAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ManufacturingProgramRaytheonVisionSystems" name="ManufacturingProgramRaytheonVisionSystems" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_CreditFacilityAndLoanPayableDetailsNarrativeAbstract" name="CreditFacilityAndLoanPayableDetailsNarrativeAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_BorrowingCapacityEligibleAccountsPercentage" name="BorrowingCapacityEligibleAccountsPercentage" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_MinimumAmountOfEquipmentAdvance" name="MinimumAmountOfEquipmentAdvance" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_PaymentToBankOnDefaultPlusBankExpenses" name="PaymentToBankOnDefaultPlusBankExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_LateFeePercent" name="LateFeePercent" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_DefaultDebtBasisSpreadOnVariableRate" name="DefaultDebtBasisSpreadOnVariableRate" nillable="true" xbrli:periodType="instant" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_DescriptionOfSaleOfStockPricePerShare" name="DescriptionOfSaleOfStockPricePerShare" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
</schema>
