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調制傳遞函數簡介
IntroductiontoModulationTransferFunctionWhenopticaldesignersattempttocomparetheperformanceofopticalsystems,acommonlyusedmeasureisthemodulationtransferfunction(MTF).MTFisusedforcomponentsassimpleasasphericalsingletlenstothoseascomplexasamult...
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像素尺寸和光學元件
PixelSizesａndOpticsUnderstandingtheinterplaybetweencamerasensorsａndimaginglensesisavitalpartofdesigningａndimplementingamachinevisionsystem.Theoptimizationofthisrelationshipisoftenoverlooked,ａndtheimpactthatitcanhaveontheoverallresolutionoft...
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?遠心照明：為什么在機器視覺應用中需要它
ecentricIllumination:WhyYouNeedItinMachineVisionApplicationsImagingａndinspectionprojectsrequireprecisionopticalcomponentsａndalignmenttoachieveoptimalperformance.Thesemachinevisioninspectionapplicationsutilizeimaginglenses,illuminationsource...
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使用C型可調對焦鏡頭
UsingC-MountFocusTunableLensesIntroductionOptotuneElectricallyFocus-TunableLensesprovideflexible,fast-focusingsolutionsforawidevarietyofmachinevisionapplications,includingqualitycontrol,sorting,orbarcodereading.Unliketraditionalopticalsetup...
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在線照明注意事項
In-lineIlluminationConsiderationsIn-lineilluminationisauniquestyleoflightingthatincorporatestheilluminationintotheopticaltrainofthemachinevisionlens,usuallybymeansofafiberopticlightguideorLEDlightsourceａndabeamsplittingoptic.Althoughin-line...
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光偏振技術的成功
SuccessfulLightPolarizationTechniquesVideoａndmachinevisionsystemsrelyonelectronicimagersthattypicallyexhibitanywherefromeight-bittotwelve-bitsignal-to-noiseratio.Althoughsufficientformanyapplications,camerasinthiscategorymaybeproblematicinc...
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硅探測器的基本原理
BasicPrinciplesofSiliconDetectorsThroughthephotovoltaiceffect,silicondetectorsprovideameansoftransforminglightenergytoanelectricalcurrent.Therootofthetheorybehindthisphenomenonisasmallenergygapbetweenthevalenceａndconductionbandsofthedetecto...
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非軸拋物面鏡的粗糙度
RoughnessofDiamondTurnedOff-AxisParabolicMirrorsSinglePointDiamondTurningisamanufacturingtechniqueforproducingoff-axisparabolic(OAP)mirrors,off-axiselliptical(OAE)mirrors,ａndotherprecisionmetalopticalcomponents.Whilethegoalofanyopticalmanuf...
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離軸拋物面鏡的制造工藝和傳統工藝的不同
離軸拋物面鏡是*表面反射鏡，其反射表面是組成原始拋物面反射鏡的一部分。每個反射表面都具有原始拋物面無色差地聚焦準直光束或準直寬帶點光源的能力。其全反射設計消除了透射光學元件會引入的位相延遲和吸收損耗。適合飛秒激光、紅外、太赫茲應用。離軸拋物面鏡的制造工藝和傳統工藝是不同的，它致力于為航空/防衛應用提供大批量的更廉價的鏡片。傳統的OAPs制造工藝是通過挖切磨制，即從大的軸對稱拋物面（母鏡）進行挖切一部分下來進行拋光。顯然，這種整體加工、分體割切成型的面鏡磨制方案耗時長，低產量是...
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Testing and Targets
TestingａndTargetsTesttargetsaredesignedtohelpevaluateorcalibratetheperformance(imagingquality)ofanimagingsystem.Thiscouldincludetroubleshootingasystem;benchmarking,certifying,orevaluatingmeasurements;orestablishingafoundationtoensuremultipl...
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