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	<link:roleType roleURI="http://lightpath.com/role/SignificantSuppliersAndCustomersDetailsNarrative" id="SignificantSuppliersAndCustomersDetailsNarrative">
	  <link:definition>00000056 - 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>
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	<link:roleType roleURI="http://lightpath.com/role/DerivativeFinancialInstrumentsWarrantLiabilityDetailsNarrative" id="DerivativeFinancialInstrumentsWarrantLiabilityDetailsNarrative">
	  <link:definition>00000057 - 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>00000058 - 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>00000059 - 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>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/LoanPayableDetailsNarrative" id="LoanPayableDetailsNarrative">
	  <link:definition>00000060 - Disclosure - 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>00000061 - 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>
	</link:roleType>
	<link:roleType roleURI="http://lightpath.com/role/TechnologyTransferAndLicenseAgreementDetailsNarrative" id="TechnologyTransferAndLicenseAgreementDetailsNarrative">
	  <link:definition>00000062 - Disclosure - Technology Transfer and License Agreement (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/SubsequentEvents-IspOpticsCorporationAcquisitionDetailsNarrative" id="SubsequentEvents-IspOpticsCorporationAcquisitionDetailsNarrative">
	  <link:definition>00000063 - Disclosure - Subsequent Events - ISP Optics Corporation Acquisition (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-20160630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:title="Presentation Links" />
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	<link:linkbaseRef xlink:type="simple" xlink:href="lpth-20160630_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-20160630_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_TotalSharesAbstract" name="TotalSharesAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedNumberOfShares" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedNumberOfShares" nillable="true" xbrli:periodType="duration" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValueAbstract" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValueAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedWeightedAverageGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedCancelledForfeitedWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" type="num:perShareItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_WeightedAverageCommonSharesOutstandingAbstract" name="WeightedAverageCommonSharesOutstandingAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_EarningsLossPerCommonShareAbstract" name="EarningsLossPerCommonShareAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_AnnualRentalIncreasePercent" name="AnnualRentalIncreasePercent" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_IncreaseInSquareFootage" name="IncreaseInSquareFootage" nillable="true" xbrli:periodType="duration" type="num:percentItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_CapitalLeaseFiscalYearEndingJuneAbstract" name="CapitalLeaseFiscalYearEndingJuneAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" 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_TransferOfDebtToAmendedDebt" name="TransferOfDebtToAmendedDebt" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_PudongPrivatePlacementDetailsNarrativeAbstract" name="PudongPrivatePlacementDetailsNarrativeAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_TechnologyTransferAndLicenseAgreementDetailsNarrativeAbstract" name="TechnologyTransferAndLicenseAgreementDetailsNarrativeAbstract" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrli:item" />
    <element id="lpth_PaymentArrangementAxis" name="PaymentArrangementAxis" abstract="true" nillable="true" xbrli:periodType="duration" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" />
    <element id="lpth_PaymentArrangementDomain" name="PaymentArrangementDomain" abstract="true" nillable="true" xbrli:periodType="duration" type="nonnum:domainItemType" substitutionGroup="xbrli:item" />
</schema>
