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  <xs:element id="oust_InTheEventOfDebtDefaultMember" abstract="true" name="InTheEventOfDebtDefaultMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_PromissoryNoteMember" abstract="true" name="PromissoryNoteMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_PrivatePlacementWarrantLiabilityMember" abstract="true" name="PrivatePlacementWarrantLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOptionsToPurchaseCommonStockMember" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOptionsToPurchaseCommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_CustomerAMember" abstract="true" name="CustomerAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ExercisePriceRangeSixMember" abstract="true" name="ExercisePriceRangeSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_SeriesBRedeemableConvertiblePreferredStockWarrantsMember" abstract="true" name="SeriesBRedeemableConvertiblePreferredStockWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedExercisesInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedExercisesInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_VestingPeriodDomain" abstract="true" name="VestingPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_AggregateIntrinsicValueRollForward" abstract="true" name="AggregateIntrinsicValueRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="oust_ExercisePriceRangeFiveMember" abstract="true" name="ExercisePriceRangeFiveMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_SponsorMember" abstract="true" name="SponsorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_TemporaryEquityConversionOfTemporaryEquityToCommonStockValue" abstract="false" name="TemporaryEquityConversionOfTemporaryEquityToCommonStockValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_AmericasExcludingUnitedStatesMember" abstract="true" name="AmericasExcludingUnitedStatesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_NumberOfLettersOfCredit" abstract="false" name="NumberOfLettersOfCredit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="oust_EquityAndTemporaryEquityTextBlock" abstract="false" name="EquityAndTemporaryEquityTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="oust_CLAWarrantsMember" abstract="true" name="CLAWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ProductWarrantyTerm" abstract="false" name="ProductWarrantyTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="oust_InterestRateScenarioDomain" abstract="true" name="InterestRateScenarioDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ManagementAndEmployeeMember" abstract="true" name="ManagementAndEmployeeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_StockIssuedDuringPeriodValueReverseRecapitalization" abstract="false" name="StockIssuedDuringPeriodValueReverseRecapitalization" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageOfStockUnits" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageOfStockUnits" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="oust_CustomerDMember" abstract="true" name="CustomerDMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCanceledInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCanceledInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_DeferredCompensationArrangementWithIndividualRecordedLiabilityRelatedToEarlyExercisedOptions" abstract="false" name="DeferredCompensationArrangementWithIndividualRecordedLiabilityRelatedToEarlyExercisedOptions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_VestingPeriodOneMember" abstract="true" name="VestingPeriodOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_SeriesARedeemableConvertiblePreferredStockMember" abstract="true" name="SeriesARedeemableConvertiblePreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentageMonthlyAfterYearOne" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsPercentageMonthlyAfterYearOne" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="oust_SaleOfWarrantPricePerShare" abstract="false" name="SaleOfWarrantPricePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="oust_ExercisePriceRangeOneMember" abstract="true" name="ExercisePriceRangeOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_CommonStockVotingRightsNumberOfVotesPerShare" abstract="false" name="CommonStockVotingRightsNumberOfVotesPerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="oust_LIBORRateNotAvailableOrApplicableMember" abstract="true" name="LIBORRateNotAvailableOrApplicableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ConversionOfClassBCommonStockToClassACommonStockMember" abstract="true" name="ConversionOfClassBCommonStockToClassACommonStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ConversionOfCanceledCLAUnitsToPublicWarrantMember" abstract="true" name="ConversionOfCanceledCLAUnitsToPublicWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_OusterTechnologiesIncMember" abstract="true" name="OusterTechnologiesIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_PublicWarrantsMember" abstract="true" name="PublicWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantRollForward" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="oust_AdjustmentsToAdditionalPaidInCapitalRecapitalizationOfferingCosts" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalRecapitalizationOfferingCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_StockConvertedReversedRecapitalization" abstract="false" name="StockConvertedReversedRecapitalization" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedExercisesInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsUnvestedExercisesInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_PreferredStockWarrantsMember" abstract="true" name="PreferredStockWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_WarrantsAcquiredInMerger" abstract="false" name="WarrantsAcquiredInMerger" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_CommonStockAndTemporaryEquityParOrStatedValuePerShare" abstract="false" name="CommonStockAndTemporaryEquityParOrStatedValuePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsRepurchasesInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsRepurchasesInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAcquiredAsPartOfTheMerger" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAcquiredAsPartOfTheMerger" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantOptionsRepurchasesInPeriod" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantOptionsRepurchasesInPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_ExercisePriceRangeFourMember" abstract="true" name="ExercisePriceRangeFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ExercisePriceRangeThreeMember" abstract="true" name="ExercisePriceRangeThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_DenominatorAbstract" abstract="true" name="DenominatorAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="oust_ShareBasedPaymentArrangement10ShareholderMember" abstract="true" name="ShareBasedPaymentArrangement10ShareholderMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_ScheduleOfPrepaidExpensesAndOtherCurrentAssetsTableTextBlock" abstract="false" name="ScheduleOfPrepaidExpensesAndOtherCurrentAssetsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="oust_ScheduleOfReverseRecapitalizationLineItems" abstract="true" name="ScheduleOfReverseRecapitalizationLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="oust_PreferredStockConvertibleConversionRatio" abstract="false" name="PreferredStockConvertibleConversionRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="oust_SeveralMembersOfTheBoardOfDirectorsMember" abstract="true" name="SeveralMembersOfTheBoardOfDirectorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_UninvoicedReceiptsOtherCurrentLiabilities" abstract="false" name="UninvoicedReceiptsOtherCurrentLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="oust_ClassOfWarrantOrRightExercisableThresholdTradingDayPeriod" abstract="false" name="ClassOfWarrantOrRightExercisableThresholdTradingDayPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="oust_ApplicableInterestRateAtTheTimeOfDefaultMember" abstract="true" name="ApplicableInterestRateAtTheTimeOfDefaultMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="oust_PrivatePlacementWarrantsMember" abstract="true" name="PrivatePlacementWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_RedeemableConvertiblePreferredStockWarrantsMember" abstract="true" name="RedeemableConvertiblePreferredStockWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="oust_NotesReceivableRelatedPartiesStatedInterestRate" abstract="false" name="NotesReceivableRelatedPartiesStatedInterestRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="oust_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancellationsWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancellationsWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:perShareItemType"/>
  <xs:element id="oust_StockIssuedDuringPeriodSharesReverseRecapitalization" abstract="false" name="StockIssuedDuringPeriodSharesReverseRecapitalization" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
</xs:schema>
