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机器视觉过滤
FilteringinMachineVisionTherearemanydifferenttypesoffiltersinmachinevisionthatcanbeutilizedtoimproveorchangetheimageoftheobjectunderinspection.Itisimportanttounderstandthedifferenttechnologiesbehindthevarioustypesoffiltersinordertounderstan...
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如何测量您的成像系统中的景深
GaugingDepthofFieldinYourImagingSystemOvertheyears,wehaveansweredcountlessquestionsregardinglensperformance.Ofthosequestions,nonehavebeenmoredifficulttodefinethanrequestsfordepthoffield.Thereasonforthisdifficultyhasmoretodowiththevaguenesso...
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调制传递函数简介
IntroductiontoModulationTransferFunctionWhenopticaldesignersattempttocomparetheperformanceofopticalsystems,acommonlyusedmeasureisthemodulationtransferfunction(MTF).MTFisusedforcomponentsassimpleasasphericalsingletlenstothoseascomplexasamult...
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像素尺寸和光学元件
PixelSizesａndOpticsUnderstandingtheinterplaybetweencamerasensorsａndimaginglensesisavitalpartofdesigningａndimplementingamachinevisionsystem.Theoptimizationofthisrelationshipisoftenoverlooked,ａndtheimpactthatitcanhaveontheoverallresolutionoft...
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远心照明：为什么在机器视觉应用中需要它
ecentricIllumination:WhyYouNeedItinMachineVisionApplicationsImagingａndinspectionprojectsrequireprecisionopticalcomponentsａndalignmenttoachieveoptimalperformance.Thesemachinevisioninspectionapplicationsutilizeimaginglenses,illuminationsource...
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使用C型可调对焦镜头
UsingC-MountFocusTunableLensesIntroductionOptotuneElectricallyFocus-TunableLensesprovideflexible,fast-focusingsolutionsforawidevarietyofmachinevisionapplications,includingqualitycontrol,sorting,orbarcodereading.Unliketraditionalopticalsetup...
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在线照明注意事项
In-lineIlluminationConsiderationsIn-lineilluminationisauniquestyleoflightingthatincorporatestheilluminationintotheopticaltrainofthemachinevisionlens,usuallybymeansofafiberopticlightguideorLEDlightsourceａndabeamsplittingoptic.Althoughin-line...
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光偏振技术的成功
SuccessfulLightPolarizationTechniquesVideoａndmachinevisionsystemsrelyonelectronicimagersthattypicallyexhibitanywherefromeight-bittotwelve-bitsignal-to-noiseratio.Althoughsufficientformanyapplications,camerasinthiscategorymaybeproblematicinc...
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硅探测器的基本原理
BasicPrinciplesofSiliconDetectorsThroughthephotovoltaiceffect,silicondetectorsprovideameansoftransforminglightenergytoanelectricalcurrent.Therootofthetheorybehindthisphenomenonisasmallenergygapbetweenthevalenceａndconductionbandsofthedetecto...
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非轴抛物面镜的粗糙度
RoughnessofDiamondTurnedOff-AxisParabolicMirrorsSinglePointDiamondTurningisamanufacturingtechniqueforproducingoff-axisparabolic(OAP)mirrors,off-axiselliptical(OAE)mirrors,ａndotherprecisionmetalopticalcomponents.Whilethegoalofanyopticalmanuf...
