施耐德镜头介绍

LensesforhighresolutionmachinevisionSchneiderOptics,Inc.|NewYork&CPO|LosAngeles,USAPentaconGmbH|Dresden,GermanyIt’sallaboutconfidenceandcooperationSchneider1group8companieslocalpartnernetworkJos.SchneiderOptischeWerkeGmbH|GermanySchneiderBandoLtd.|Seoul,KoreaSchneiderAsiaPacificLtd.|HongKongSchneiderOpticalTechnologies(Shenzhen)Co.Ltd.|ChinaSchneiderKreuznachISCODivisionGmbH&Co.KG|Göttingen,GermanyIt’sallaboutfocusonsegmentsB+WFilterProjectionLensesIndustrialOpticsDigitalProjectionServoHydraulicsPhotoOpticsIndustryPhotoCinemaOphthalmicLensesSchneiderBusinessUnitsPhotoCinemaIndustrySchneider’sBusinessUnitIndustrialOpticsOurVision:Wewanttoimprovevisionsystemtechnologyforindustrialandnon-manufacturingimageprocessingapplications.OurMission:Providinghighqualityopticalsolutionsforimageprocessingapplicationshelpssystemintegratorsandequipmentmanufacturerstoenhancetheirvisionsystems.Ourengineeringandproductdevelopmentsaredrivenbytherequirementsderivedfromlong-termpartnershipswithourcustomers.Ouremployeesarethefundamentalsuccessfactorandwetrustintheircommitmenttosolveourcustomer’sproblems.Our90-yearsofexpertiseinopticaldesignandmanufacturingallowsustoproducesuperiorproductsandprovideaprofessionalconsultancyandsupporttocontributetothesuccessofourcustomers.1.Howtochoosethecorrectlens2.WhatcanwedowiththeSchneiderlens2fff2fobjectImageWhichcameraisused?•Sizeofthesensor?–Thatdefinestherequiredimagecircleofthelens:e.g.a2/3inchformatCCDrequiresalenswithimagecircle11mmdiagonale.g.a8k7µmlinescanCCDrequiresaalenswithimagecircle58mm•Pixelsize?–Thatdefinestherequiredimagesideresolutionofthelens:e.g.a7µmpixelsizemeansaNyquistfrequencyof72lp/mme.g.a5µmpixelsizemeansaNyquistfrequencyof100lp/mm•Lensinterface?–Thatdefinesthemechanicaladaptationandforsomeinterfacesthedistancebetweenflangeandsensor:e.g.C-mount(flange–sensordistance17.52mm)e.g.F-mount(flange–sensordistance46.5mm)forotherinterfacesuchasM42orM72,youneedtoknowthecameraspecificdistance•Youmayspecifythemanufacturerandmodelofthecamera.Tochoosetherightlensyoumustknow…GaussianOpticsmagnificationbeta’=imageheighty’/objectheightyOO'=totaltrack(objecttoimagedistance)F-NumberF#=f'/EP=1/2N.A.’effectiveF-NumberF#eff=(1-beta’)·F#infinityyObjectHeighty'ImageHeightF'FHH'∆XS'f'S'HH'∑dOO'SfSf'EP:entrancepupiln’=refractiveindex(imageplane)u’=apertureangle(imageplane)numericalapertureN.A.’=n'sinu'ForourMakroandUnifocSystem:UseourXLS-CalculatortocheckthepossibleconfigurationswithourCPNlensessuchasrequiredlengthofextensiontubesNoteforMakroandUnifocSystem:Magnificationratiostowardsstrongerreductionneedanincreasingminimumdistancebetweenthelensandthesensor,soforinterfaceswithlargedistancestothesensor,thereisaminimumfocallengthrequired:example:F-mountinterface,magnificationß’=0.1requiresafocallengthf80mmIngeneral:trytoavoidF-mount,betteruseM42instead相机型号：P3-8x-12K分辨率：12k，Sensorsize：61.44pixelsize:5μMount:M72Depth：9.4mm拍摄视野:620mm拍摄高度控制在:500-700之间caseMK-CPN-S4.0/6014802Ext.tube10mmV/V2017810mmAdapterV/leica200546.5mmUnifoc7613048AdapterM58/M72*0.75130522mmGeneralMarket&TechnologyTrendsDrivingfactorsforsurfaceandwebinspectioninQAofmanufacturing:•Detectionofsmallerdefectsizes(10microns)•Betterreliabilityofinspectionprocess(‘zerodefect’)•Reducedcostbymoreefficientcomponentuse(fasterscanforincreasedthroughput)Impactonmachinevisioncomponents:•increasingresolutionoflinescancameras(4k,8k,12k,16k,…)•smallerpixelsizesoflinescansensors(7microns,5microns,3.5microns)•highperformanceopticsformacroimagingRequirementsonOpticsImagingattributescharacterizingahighqualitylens:•imagesharpnessandcontrastovertheentirefield•geometricallyaccuratereproductionovertheentirefield•uniformhighperformanceforanypointinthefield•homogeneousbrightnessdistributionovertheentireimagefield•highanduniformspectraltransmission•colorfringesassmallaspossible•aslittlestraylightaspossibleNyquistFrequencyTheNyquistfrequencyisthelimitofthenumberoflinepairspermm,forexampledeterminedbythepixelsizeofthesensor.Itisthemaximumpossibleresolution.11RN===100Lp/mm2xp0,005x2Forapixelsize(p)of5microns(0.005mm),theNyquistfrequencyis:16MTFBrightnessDistribution:1=white0=blackModulation(MTF)=DifferenceinBrightnessModulationasafunctionofthefinenessoflines(No.oflinepairs/mm)TheMTF(ModulationTransferFunction)describesthequalityofanimagingsystemwithrespecttosharpnessandcontrast.I(MAX)–I(MIN)Modulation=------------------------I(MAX)+I(MIN)ModulationInImageMTF=--------------------------------ModulationInObjectIntensity/BrightnessSphericalcoordinatesLensparametersareusuallyexpressedinsphericalcoordinates:-Alensistheoreticallyfullyrotationallysymmetric-Sameperformanceonspheresofsameradius-parameterisgraphedoverimageheight(radius)Imagecircle:maximumimagesizeofthelensOpticalaxisparameterImageheightResolutionofLensesIdeal:100%contrastuptotheNyquistfrequency0%contrastaboveNyquistfrequencyReality:HighcontrastatlowfrequenciesLowercontrastathighfrequenciesTypicalcriteriaforalensselectionprocess:30%contrastat0.67*NyquistfrequencyNote:Thetotalsystem’sMTFistheproductofthelens’