"You are an auditor for XBRL filings. \nGiven two concepts and the provided filing (schema, presentation, calculation, definition, label, instance, and US GAAP taxonomy),\ndetermine which one of the following erroneous relationship types best describes the relationship between the two concepts:\n\n(1) Reversal  \n    Definition: A relationship is flagged as Reversal when the filer\u2019s extension taxonomy redefines element hierarchy inconsistently with the US GAAP taxonomy. Specifically, this occurs when an element that should be a sibling in the US GAAP taxonomy is instead defined as a child of another element (or vice versa, a child element is incorrectly redefined as a sibling).\n\n(2) Inappropriateness  \n    Definition: A relationship is flagged as Inappropriateness when elements appear under an abstract category where they do not belong, contrary to the US GAAP taxonomy.\n\n(3) CombinationErr  \n    Definition: A relationship is flagged as CombinationErr when an axis in the filer\u2019s extension taxonomy is associated with inappropriate members not permitted by the US GAAP taxonomy.\n\nYou must reference the US GAAP taxonomy to retrieve and check the two concepts across the entire filing.\nOutput only one of the following labels exactly, chosen strictly from:\n[\"Reversal\", \"Inappropriateness\", \"CombinationErr\"].\n\nNo explanations. No extra text. Only the label.\n\n    \n##Schema document\nNone\n\n##Presentation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://lpth.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:href=\"lpth-20231231.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:type=\"simple\"/>\n  <link:presentationLink xlink:type=\"extended\" xlink:role=\"http://lpth.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:title=\"000006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)\">\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfCashFlowsAbstract\" 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preferredLabel=\"http://www.xbrl.org/2003/role/totalLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:label=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_bd2f55\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesAbstract_c67737\" xlink:to=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_bd2f55\" order=\"32\" preferredLabel=\"http://www.xbrl.org/2003/role/periodStartLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:label=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ee7c62\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesAbstract_c67737\" xlink:to=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_ee7c62\" order=\"33\" preferredLabel=\"http://www.xbrl.org/2003/role/periodEndLabel\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SupplementalCashFlowInformationAbstract\" xlink:label=\"loc_us-gaapSupplementalCashFlowInformationAbstract_f28958\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivitiesAbstract_c67737\" xlink:to=\"loc_us-gaapSupplementalCashFlowInformationAbstract_f28958\" order=\"34\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InterestPaidNet\" xlink:label=\"loc_us-gaapInterestPaidNet_e9de9b\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaapSupplementalCashFlowInformationAbstract_f28958\" xlink:to=\"loc_us-gaapInterestPaidNet_e9de9b\" order=\"35\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncomeTaxesPaidNet\" xlink:label=\"loc_us-gaapIncomeTaxesPaidNet_6d0ed2\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaapSupplementalCashFlowInformationAbstract_f28958\" xlink:to=\"loc_us-gaapIncomeTaxesPaidNet_6d0ed2\" order=\"36\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"lpth-20231231.xsd#lpth_SupplementalDisclosureOfNoncashInvestingFinancingActivitiesNewAbstract\" xlink:label=\"loc_lpthSupplementalDisclosureOfNoncashInvestingFinancingActivitiesNewAbstract_fcff52\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_us-gaapSupplementalCashFlowInformationAbstract_f28958\" xlink:to=\"loc_lpthSupplementalDisclosureOfNoncashInvestingFinancingActivitiesNewAbstract_fcff52\" order=\"37\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AirlineCapacityPurchaseArrangements\" xlink:label=\"loc_us-gaapAirlineCapacityPurchaseArrangements_00a646\"/>\n    <link:presentationArc xlink:type=\"arc\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/parent-child\" xlink:from=\"loc_lpthSupplementalDisclosureOfNoncashInvestingFinancingActivitiesNewAbstract_fcff52\" xlink:to=\"loc_us-gaapAirlineCapacityPurchaseArrangements_00a646\" order=\"38\"/>\n  </link:presentationLink>\n  </link:linkbase>\n\n\n##Calculation linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef roleURI=\"http://lpth.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:href=\"lpth-20231231.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:type=\"simple\"/>\n  <link:calculationLink xlink:type=\"extended\" xlink:role=\"http://lpth.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:title=\"000006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)\">\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities\" xlink:label=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss\" xlink:label=\"loc_us-gaapNetIncomeLoss\"/>\n    <link:calculationArc order=\"2\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapNetIncomeLoss\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationAndAmortization\" xlink:label=\"loc_us-gaapDepreciationAndAmortization\"/>\n    <link:calculationArc order=\"3\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapDepreciationAndAmortization\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfDebtDiscountPremium\" xlink:label=\"loc_us-gaapAmortizationOfDebtDiscountPremium\"/>\n    <link:calculationArc order=\"4\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapAmortizationOfDebtDiscountPremium\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment\" xlink:label=\"loc_us-gaapGainLossOnSaleOfPropertyPlantEquipment\"/>\n    <link:calculationArc order=\"5\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapGainLossOnSaleOfPropertyPlantEquipment\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation\" xlink:label=\"loc_us-gaapShareBasedCompensation\"/>\n    <link:calculationArc order=\"6\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapShareBasedCompensation\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProvisionForDoubtfulAccounts\" xlink:label=\"loc_us-gaapProvisionForDoubtfulAccounts\"/>\n    <link:calculationArc order=\"7\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapProvisionForDoubtfulAccounts\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"lpth-20231231.xsd#lpth_IncreaseDecreaseInOperatingLeaseAssetsAndLiabilities\" xlink:label=\"loc_lpthIncreaseDecreaseInOperatingLeaseAssetsAndLiabilities\"/>\n    <link:calculationArc order=\"8\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_lpthIncreaseDecreaseInOperatingLeaseAssetsAndLiabilities\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWriteDown\" xlink:label=\"loc_us-gaapInventoryWriteDown\"/>\n    <link:calculationArc order=\"9\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapInventoryWriteDown\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits\" xlink:label=\"loc_us-gaapDeferredIncomeTaxesAndTaxCredits\"/>\n    <link:calculationArc order=\"10\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapDeferredIncomeTaxesAndTaxCredits\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable\" xlink:label=\"loc_us-gaapIncreaseDecreaseInAccountsReceivable\"/>\n    <link:calculationArc order=\"11\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapIncreaseDecreaseInAccountsReceivable\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInInventories\" xlink:label=\"loc_us-gaapIncreaseDecreaseInInventories\"/>\n    <link:calculationArc order=\"12\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapIncreaseDecreaseInInventories\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets\" xlink:label=\"loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets\"/>\n    <link:calculationArc order=\"13\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities\" xlink:label=\"loc_us-gaapIncreaseDecreaseInAccountsPayableAndAccruedLiabilities\"/>\n    <link:calculationArc order=\"14\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapIncreaseDecreaseInAccountsPayableAndAccruedLiabilities\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets\" xlink:label=\"loc_us-gaapIncreaseDecreaseInOtherCurrentAssets\"/>\n    <link:calculationArc order=\"15\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:to=\"loc_us-gaapIncreaseDecreaseInOtherCurrentAssets\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities\" xlink:label=\"loc_us-gaapNetCashProvidedByUsedInInvestingActivities\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment\" xlink:label=\"loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment\"/>\n    <link:calculationArc order=\"16\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInInvestingActivities\" xlink:to=\"loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"lpth-20231231.xsd#lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired\" xlink:label=\"loc_lpthAcquisitionOfVisimidTechnologiesNetOfCashAcquired\"/>\n    <link:calculationArc order=\"17\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInInvestingActivities\" xlink:to=\"loc_lpthAcquisitionOfVisimidTechnologiesNetOfCashAcquired\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSaleOfFlightEquipment\" xlink:label=\"loc_us-gaapProceedsFromSaleOfFlightEquipment\"/>\n    <link:calculationArc order=\"18\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInInvestingActivities\" xlink:to=\"loc_us-gaapProceedsFromSaleOfFlightEquipment\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities\" xlink:label=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivities\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans\" xlink:label=\"loc_us-gaapProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans\"/>\n    <link:calculationArc order=\"19\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivities\" xlink:to=\"loc_us-gaapProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfDebt\" xlink:label=\"loc_us-gaapProceedsFromIssuanceOfDebt\"/>\n    <link:calculationArc order=\"20\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivities\" xlink:to=\"loc_us-gaapProceedsFromIssuanceOfDebt\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfDebt\" xlink:label=\"loc_us-gaapRepaymentsOfDebt\"/>\n    <link:calculationArc order=\"21\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivities\" xlink:to=\"loc_us-gaapRepaymentsOfDebt\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfDebtAndCapitalLeaseObligations\" xlink:label=\"loc_us-gaapRepaymentsOfDebtAndCapitalLeaseObligations\"/>\n    <link:calculationArc order=\"22\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivities\" xlink:to=\"loc_us-gaapRepaymentsOfDebtAndCapitalLeaseObligations\" xlink:type=\"arc\" weight=\"-1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:label=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\"/>\n    <link:calculationArc order=\"23\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:to=\"loc_us-gaapNetCashProvidedByUsedInOperatingActivities\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:calculationArc order=\"24\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:to=\"loc_us-gaapNetCashProvidedByUsedInInvestingActivities\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:calculationArc order=\"25\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:to=\"loc_us-gaapNetCashProvidedByUsedInFinancingActivities\" xlink:type=\"arc\" weight=\"1\"/>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:label=\"loc_us-gaapEffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\"/>\n    <link:calculationArc order=\"26\" xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/summation-item\" xlink:from=\"loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:to=\"loc_us-gaapEffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:type=\"arc\" weight=\"1\"/>\n  </link:calculationLink>\n  </link:linkbase>\n\n\n##Definition linkbase document\n<?xml version='1.0' encoding='US-ASCII'?>\n<link:linkbase xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xmlns:xbrldt=\"http://xbrl.org/2005/xbrldt\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:arcroleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension\" arcroleURI=\"http://xbrl.org/int/dim/arcrole/hypercube-dimension\"/>\n  <link:arcroleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain\" arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-domain\"/>\n  <link:arcroleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member\" arcroleURI=\"http://xbrl.org/int/dim/arcrole/domain-member\"/>\n  <link:arcroleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#all\" arcroleURI=\"http://xbrl.org/int/dim/arcrole/all\"/>\n  <link:arcroleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#notAll\" arcroleURI=\"http://xbrl.org/int/dim/arcrole/notAll\"/>\n  <link:arcroleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default\" arcroleURI=\"http://xbrl.org/int/dim/arcrole/dimension-default\"/>\n  <link:roleRef roleURI=\"http://lpth.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:href=\"lpth-20231231.xsd#CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:type=\"simple\"/>\n  <link:definitionLink xlink:type=\"extended\" xlink:role=\"http://lpth.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited\" xlink:title=\"000006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)\"/>\n  </link:linkbase>\n\n\n##Label linkbase document\n<?xml version='1.0' encoding='UTF-8'?>\n<link:linkbase xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" xsi:schemaLocation=\"http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd\"><link:roleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel\" roleURI=\"http://www.xbrl.org/2009/role/negatedLabel\"/>\n  <link:roleRef xlink:type=\"simple\" roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodEndLabel\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel\"/>\n  <link:roleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel\" roleURI=\"http://www.xbrl.org/2009/role/negatedPeriodStartLabel\"/>\n  <link:roleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel\" roleURI=\"http://www.xbrl.org/2009/role/negatedTotalLabel\"/>\n  <link:roleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel\" roleURI=\"http://www.xbrl.org/2009/role/negatedNetLabel\"/>\n  <link:roleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel\" roleURI=\"http://www.xbrl.org/2009/role/negatedTerseLabel\"/>\n  <link:roleRef xlink:type=\"simple\" xlink:href=\"http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel\" roleURI=\"http://www.xbrl.org/2009/role/netLabel\"/>\n  <link:labelLink xlink:type=\"extended\" xlink:role=\"http://www.xbrl.org/2003/role/link\"><link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities\" xlink:label=\"us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities\" xlink:to=\"us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl_13d6f2\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl_13d6f2\" xml:lang=\"en-US\">Accounts payable and accrued liabilities</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"lpth-20231231.xsd#lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired\" xlink:label=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired\" xlink:to=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired_lbl_90990b\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired\" xlink:to=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired_lbl_22\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:label=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired_lbl_90990b\" xml:lang=\"en-US\">Acquisition of Visimid Technologies, net of cash acquired</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"lpth_AcquisitionOfVisimidTechnologiesNetOfCashAcquired_lbl_22\" xml:lang=\"en-US\">[Acquisition of Visimid Technologies, net of cash acquired]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets\" xlink:label=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets\" xlink:to=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl_2c4740\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets\" xlink:to=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl_15\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:label=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl_2c4740\" xml:lang=\"en-US\">Other current assets</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_IncreaseDecreaseInOtherCurrentAssets_lbl_15\" xml:lang=\"en-US\">[Increase (Decrease) in Other Current Assets]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AmortizationOfDebtDiscountPremium\" xlink:label=\"us-gaap_AmortizationOfDebtDiscountPremium\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_AmortizationOfDebtDiscountPremium\" xlink:to=\"us-gaap_AmortizationOfDebtDiscountPremium_lbl_eb4f66\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_AmortizationOfDebtDiscountPremium_lbl_eb4f66\" xml:lang=\"en-US\">Interest from amortization of debt costs</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetIncomeLoss\" xlink:label=\"us-gaap_NetIncomeLoss\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetIncomeLoss\" xlink:to=\"us-gaap_NetIncomeLoss_lbl_c8c51f\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetIncomeLoss\" xlink:to=\"us-gaap_NetIncomeLoss_lbl_18\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetIncomeLoss\" xlink:to=\"us-gaap_NetIncomeLoss_lbl_43a45b\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetIncomeLoss\" xlink:to=\"us-gaap_NetIncomeLoss_lbl_19ad8e\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:label=\"us-gaap_NetIncomeLoss_lbl_c8c51f\" xml:lang=\"en-US\">Net loss</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_NetIncomeLoss_lbl_18\" xml:lang=\"en-US\">[Net Income (Loss) Attributable to Parent]</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:label=\"us-gaap_NetIncomeLoss_lbl_43a45b\" xml:lang=\"en-US\">Net loss</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/terseLabel\" xlink:label=\"us-gaap_NetIncomeLoss_lbl_19ad8e\" xml:lang=\"en-US\">Net loss</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_InventoryWriteDown\" xlink:label=\"us-gaap_InventoryWriteDown\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_InventoryWriteDown\" xlink:to=\"us-gaap_InventoryWriteDown_lbl_3fca15\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_InventoryWriteDown_lbl_3fca15\" xml:lang=\"en-US\">Inventory write-offs to allowance</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"lpth-20231231.xsd#lpth_LPOIZMember\" xlink:label=\"lpth_LPOIZMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"lpth_LPOIZMember\" xlink:to=\"lpth_LPOIZMember_lbl_c1772f\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"lpth_LPOIZMember\" xlink:to=\"lpth_LPOIZMember_lbl_4ad145\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"lpth_LPOIZMember_lbl_c1772f\" xml:lang=\"en-US\">L P O I Z</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:label=\"lpth_LPOIZMember_lbl_4ad145\" xml:lang=\"en-US\">L P O I Z</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract\" xlink:label=\"us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract\" xlink:to=\"us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl_edd5cb\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl_edd5cb\" xml:lang=\"en-US\">Cash flows from operating activities:</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:label=\"us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:to=\"us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_3196ab\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_3196ab\" xml:lang=\"en-US\">Effect of exchange rate on cash and cash equivalents</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract\" xlink:label=\"us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract\" xlink:to=\"us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl_00b044\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl_00b044\" xml:lang=\"en-US\">Adjustments to reconcile net loss to net cash provided by (used in) operating activities:</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract\" xlink:label=\"us-gaap_IncreaseDecreaseInOperatingCapitalAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_IncreaseDecreaseInOperatingCapitalAbstract\" xlink:to=\"us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl_0ecdd6\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl_0ecdd6\" xml:lang=\"en-US\">Changes in operating assets and liabilities:</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities\" xlink:label=\"us-gaap_NetCashProvidedByUsedInOperatingActivities\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetCashProvidedByUsedInOperatingActivities\" xlink:to=\"us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_429d6e\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetCashProvidedByUsedInOperatingActivities\" xlink:to=\"us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_19\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:label=\"us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_429d6e\" xml:lang=\"en-US\">Net cash provided by (used in) operating activities</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl_19\" xml:lang=\"en-US\">[Net Cash Provided by (Used in) Operating Activities]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RetainedEarningsMember\" xlink:label=\"us-gaap_RetainedEarningsMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_RetainedEarningsMember\" xlink:to=\"us-gaap_RetainedEarningsMember_lbl_032981\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_RetainedEarningsMember_lbl_032981\" xml:lang=\"en-US\">Retained Earnings (Accumulated Deficit)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AdditionalPaidInCapitalMember\" xlink:label=\"us-gaap_AdditionalPaidInCapitalMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_AdditionalPaidInCapitalMember\" xlink:to=\"us-gaap_AdditionalPaidInCapitalMember_lbl_7ea863\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_AdditionalPaidInCapitalMember_lbl_7ea863\" xml:lang=\"en-US\">Additional Paid-In Capital</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable\" xlink:label=\"us-gaap_IncreaseDecreaseInAccountsReceivable\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_IncreaseDecreaseInAccountsReceivable\" xlink:to=\"us-gaap_IncreaseDecreaseInAccountsReceivable_lbl_e208ac\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_IncreaseDecreaseInAccountsReceivable_lbl_e208ac\" xml:lang=\"en-US\">Trade accounts receivable</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment\" xlink:label=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment\" xlink:to=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl_0280c8\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment\" xlink:to=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl_21\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:label=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl_0280c8\" xml:lang=\"en-US\">Purchase of property and equipment</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl_21\" xml:lang=\"en-US\">[Payments to Acquire Property, Plant, and Equipment]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AirlineCapacityPurchaseArrangements\" xlink:label=\"us-gaap_AirlineCapacityPurchaseArrangements\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_AirlineCapacityPurchaseArrangements\" xlink:to=\"us-gaap_AirlineCapacityPurchaseArrangements_lbl_477f5a\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_AirlineCapacityPurchaseArrangements_lbl_477f5a\" xml:lang=\"en-US\">Purchase of equipment through finance lease arrangements</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_BusinessAcquisitionAxis\" xlink:label=\"us-gaap_BusinessAcquisitionAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_BusinessAcquisitionAxis\" xlink:to=\"us-gaap_BusinessAcquisitionAxis_lbl_40fda2\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_BusinessAcquisitionAxis_lbl_40fda2\" xml:lang=\"en-US\">Business Acquisition Axis</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits\" xlink:label=\"us-gaap_DeferredIncomeTaxesAndTaxCredits\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_DeferredIncomeTaxesAndTaxCredits\" xlink:to=\"us-gaap_DeferredIncomeTaxesAndTaxCredits_lbl_1a7eda\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_DeferredIncomeTaxesAndTaxCredits_lbl_1a7eda\" xml:lang=\"en-US\">Deferred taxes</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromSaleOfFlightEquipment\" xlink:label=\"us-gaap_ProceedsFromSaleOfFlightEquipment\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_ProceedsFromSaleOfFlightEquipment\" xlink:to=\"us-gaap_ProceedsFromSaleOfFlightEquipment_lbl_e883e0\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_ProceedsFromSaleOfFlightEquipment_lbl_e883e0\" xml:lang=\"en-US\">Proceeds from sale-leaseback of equipment</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:label=\"us-gaap_AccumulatedOtherComprehensiveIncomeMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_AccumulatedOtherComprehensiveIncomeMember\" xlink:to=\"us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl_567da5\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl_567da5\" xml:lang=\"en-US\">Accumulated other comprehensive loss</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_DepreciationAndAmortization\" xlink:label=\"us-gaap_DepreciationAndAmortization\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_DepreciationAndAmortization\" xlink:to=\"us-gaap_DepreciationAndAmortization_lbl_06d854\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_DepreciationAndAmortization_lbl_06d854\" xml:lang=\"en-US\">Depreciation and amortization</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment\" xlink:label=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment\" xlink:to=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl_521739\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment\" xlink:to=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl_7\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:label=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl_521739\" xml:lang=\"en-US\">Loss on disposal of property and equipment</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_GainLossOnSaleOfPropertyPlantEquipment_lbl_7\" xml:lang=\"en-US\">[Gain (Loss) on Disposition of Property Plant Equipment]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_SupplementalCashFlowInformationAbstract\" xlink:label=\"us-gaap_SupplementalCashFlowInformationAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_SupplementalCashFlowInformationAbstract\" xlink:to=\"us-gaap_SupplementalCashFlowInformationAbstract_lbl_a9dd4f\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_SupplementalCashFlowInformationAbstract_lbl_a9dd4f\" xml:lang=\"en-US\">Supplemental disclosure of cash flow information:</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:to=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_7dc80e\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:to=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_33\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:to=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_eddcb6\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents\" xlink:to=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_f8ecd6\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/periodStartLabel\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_7dc80e\" xml:lang=\"en-US\">Cash, cash equivalents and restricted cash, beginning of period</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_33\" xml:lang=\"en-US\">[Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents]</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/periodEndLabel\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_eddcb6\" xml:lang=\"en-US\">Cash, cash equivalents and restricted cash, end of period</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl_f8ecd6\" xml:lang=\"en-US\">Cash And Cash Equivalents</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProvisionForDoubtfulAccounts\" xlink:label=\"us-gaap_ProvisionForDoubtfulAccounts\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_ProvisionForDoubtfulAccounts\" xlink:to=\"us-gaap_ProvisionForDoubtfulAccounts_lbl_3dee25\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_ProvisionForDoubtfulAccounts_lbl_3dee25\" xml:lang=\"en-US\">Provision for doubtful accounts receivable</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementOfCashFlowsAbstract\" xlink:label=\"us-gaap_StatementOfCashFlowsAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_StatementOfCashFlowsAbstract\" xlink:to=\"us-gaap_StatementOfCashFlowsAbstract_lbl_3bbb56\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_StatementOfCashFlowsAbstract_lbl_3bbb56\" xml:lang=\"en-US\">Condensed Consolidated Statements of Cash Flows (Unaudited)</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract\" xlink:label=\"us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract\" xlink:to=\"us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl_d85667\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl_d85667\" xml:lang=\"en-US\">Cash flows from investing activities:</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_StatementEquityComponentsAxis\" xlink:label=\"us-gaap_StatementEquityComponentsAxis\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_StatementEquityComponentsAxis\" xlink:to=\"us-gaap_StatementEquityComponentsAxis_lbl_bf531a\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_StatementEquityComponentsAxis_lbl_bf531a\" xml:lang=\"en-US\">Equity Components [Axis]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:to=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl_5a5e92\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect\" xlink:to=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl_32\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl_5a5e92\" xml:lang=\"en-US\">Change in cash, cash equivalents and restricted cash</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl_32\" xml:lang=\"en-US\">[Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans\" xlink:label=\"us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans\" xlink:to=\"us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans_lbl_fcba11\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans_lbl_fcba11\" xml:lang=\"en-US\">Proceeds from sale of common stock from Employee Stock Purchase Plan</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"lpth-20231231.xsd#lpth_ClassACommonStockMember\" xlink:label=\"lpth_ClassACommonStockMember\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"lpth_ClassACommonStockMember\" xlink:to=\"lpth_ClassACommonStockMember_lbl_974772\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"lpth_ClassACommonStockMember\" xlink:to=\"lpth_ClassACommonStockMember_lbl_ac1597\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"lpth_ClassACommonStockMember_lbl_974772\" xml:lang=\"en-US\">Class A Common Stock</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/verboseLabel\" xlink:label=\"lpth_ClassACommonStockMember_lbl_ac1597\" xml:lang=\"en-US\">Class A common stock</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_ShareBasedCompensation\" xlink:label=\"us-gaap_ShareBasedCompensation\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_ShareBasedCompensation\" xlink:to=\"us-gaap_ShareBasedCompensation_lbl_862031\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_ShareBasedCompensation_lbl_862031\" xml:lang=\"en-US\">Stock-based compensation on stock options, RSUs &amp; RSAs, net</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_RepaymentsOfDebt\" xlink:label=\"us-gaap_RepaymentsOfDebt\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_RepaymentsOfDebt\" xlink:to=\"us-gaap_RepaymentsOfDebt_lbl_a8cec3\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_RepaymentsOfDebt\" xlink:to=\"us-gaap_RepaymentsOfDebt_lbl_28\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2009/role/negatedLabel\" xlink:label=\"us-gaap_RepaymentsOfDebt_lbl_a8cec3\" xml:lang=\"en-US\">Payments on loans payable</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_RepaymentsOfDebt_lbl_28\" xml:lang=\"en-US\">[Repayments of Debt]</link:label>\n    <link:loc xlink:type=\"locator\" xlink:href=\"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities\" xlink:label=\"us-gaap_NetCashProvidedByUsedInInvestingActivities\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetCashProvidedByUsedInInvestingActivities\" xlink:to=\"us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl_51d47a\" xlink:type=\"arc\"/>\n    <link:labelArc xlink:arcrole=\"http://www.xbrl.org/2003/arcrole/concept-label\" xlink:from=\"us-gaap_NetCashProvidedByUsedInInvestingActivities\" xlink:to=\"us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl_24\" xlink:type=\"arc\"/>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/totalLabel\" xlink:label=\"us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl_51d47a\" xml:lang=\"en-US\">Net cash used in investing activities</link:label>\n    <link:label xlink:type=\"resource\" xlink:role=\"http://www.xbrl.org/2003/role/label\" xlink:label=\"us-gaap_NetCashPr\n\n##Instance document\n<?xml version='1.0' encoding='UTF-8'?>\n<xbrl xmlns=\"http://www.xbrl.org/2003/instance\" xmlns:dei=\"http://xbrl.sec.gov/dei/2023\" xmlns:iso4217=\"http://www.xbrl.org/2003/iso4217\" xmlns:link=\"http://www.xbrl.org/2003/linkbase\" 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unitRef=\"USD\">142853</us-gaap:ProceedsFromIssuanceOfDebt>\n\t<us-gaap:ProceedsFromIssuanceOfDebt contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_502\" unitRef=\"USD\">0</us-gaap:ProceedsFromIssuanceOfDebt>\n\t<us-gaap:RepaymentsOfDebt contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_503\" unitRef=\"USD\">407510</us-gaap:RepaymentsOfDebt>\n\t<us-gaap:RepaymentsOfDebt contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_504\" unitRef=\"USD\">405498</us-gaap:RepaymentsOfDebt>\n\t<us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_505\" unitRef=\"USD\">58785</us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations>\n\t<us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_506\" unitRef=\"USD\">57140</us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations>\n\t<us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_507\" unitRef=\"USD\">-303723</us-gaap:NetCashProvidedByUsedInFinancingActivities>\n\t<us-gaap:NetCashProvidedByUsedInFinancingActivities contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_508\" unitRef=\"USD\">-442768</us-gaap:NetCashProvidedByUsedInFinancingActivities>\n\t<us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_509\" unitRef=\"USD\">32698</us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_510\" unitRef=\"USD\">-107994</us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_511\" unitRef=\"USD\">-1262288</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_512\" unitRef=\"USD\">-1714039</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"AsOf2023-06-30\" decimals=\"0\" id=\"fid_513\" unitRef=\"USD\">7144490</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"AsOf2022-06-30\" decimals=\"0\" id=\"fid_514\" unitRef=\"USD\">5507891</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"AsOf2023-12-31\" decimals=\"0\" id=\"fid_515\" unitRef=\"USD\">5882202</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"AsOf2022-12-31\" decimals=\"0\" id=\"fid_516\" unitRef=\"USD\">3793852</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents contextRef=\"AsOf2023-12-31_lpth_LPOIZMember\" decimals=\"-5\" id=\"fid_891\" unitRef=\"USD\">5900000</us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents>\n\t<us-gaap:InterestPaidNet contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_518\" unitRef=\"USD\">110774</us-gaap:InterestPaidNet>\n\t<us-gaap:InterestPaidNet contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_519\" unitRef=\"USD\">106394</us-gaap:InterestPaidNet>\n\t<us-gaap:IncomeTaxesPaidNet contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_520\" unitRef=\"USD\">114953</us-gaap:IncomeTaxesPaidNet>\n\t<us-gaap:IncomeTaxesPaidNet contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_521\" unitRef=\"USD\">218367</us-gaap:IncomeTaxesPaidNet>\n\t<us-gaap:AirlineCapacityPurchaseArrangements contextRef=\"From2023-07-01to2023-12-31\" decimals=\"0\" id=\"fid_523\" unitRef=\"USD\">61654</us-gaap:AirlineCapacityPurchaseArrangements>\n\t<us-gaap:AirlineCapacityPurchaseArrangements contextRef=\"From2022-07-01to2022-12-31\" decimals=\"0\" id=\"fid_524\" unitRef=\"USD\">83921</us-gaap:AirlineCapacityPurchaseArrangements>\n\t</xbrl>\n\n\n\n##US GAAP Taxonomy\n[Concept Core]\nID: us-gaap:InterestPaidNet\nLabel: Interest Paid, Excluding Capitalized Interest, Operating Activities\nType: xbrli:monetaryItemType | Balance: credit | PeriodType: duration | Abstract: False\nStatus: None | DeprecatedLabel: None | DeprecatedDate: None\nDocumentation:\nAmount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.\n\nProvenance: file=GAAP_Taxonomy_2024.xlsx | sheet=Concepts | row=1434\n\n\n[Concept Relations]\nID: us-gaap:InterestPaidNet\n\nPresentation:\n- Role: http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsDirect\n  Path: Payments for Operating Activities [Abstract] > Interest Paid, Excluding Capitalized Interest, Operating Activities\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsSupplementalDisclosures\n  Path: Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] > Interest Paid, Excluding Capitalized Interest, Operating Activities\n  PreferredLabel: None\n- Role: http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsIndirectAdditionalElements\n  Path: Interest Paid, Including Capitalized Interest, Operating and Investing Activities [Abstract] > Interest Paid, Excluding Capitalized Interest, Operating Activities\n  PreferredLabel: None\nProvenance: sheets include Presentation-like sheets\n\n\n[Concept Relations]\nID: us-gaap:InterestPaidNet\n\nCalculation:\n- As Child:\n  parent=us-gaap:InterestPaid | weight=1 | role=http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsIndirect\n  parent=us-gaap:PaymentsForOperatingActivities | weight=1 | role=http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsDirect\nProvenance: sheets include Calculation-like sheets\n\n\n[Concept Relations]\nID: us-gaap:InterestPaidNet\n\nDefinition (Dimensions/Domain/Hypercube):\n- http://xbrl.org/int/dim/arcrole/domain-member: from=us-gaap:PaymentsForOperatingActivitiesAbstract -> to=us-gaap:InterestPaidNet (role=http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsDirectStatementTable)\nProvenance: sheets include Definition-like sheets\n\n\n[Concept Relations]\nID: us-gaap:InterestPaidNet\n\nReferences:\n- None | None | Element is intended to be used in supplemental disclosure for statement of cash flows when indirect method is used. Element is intended to be used in operating activities in statement of cash flows when direct method is used.\nProvenance: sheets include Reference-like sheets\n\nQuestion: What erroneous relationship type exists between us-gaap:InterestPaidNet and NetCashProvidedByUsedInInvestingActivitiesAbstract, based on the provided XBRL filing and the US GAAP taxonomy?\nAnswer:\n\n    "

Answer: "Inappropriateness"