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大视场空间可见光相机的杂散光分析与抑制 Title:AnalysisandSuppressionofStrayLightinLargeField-of-ViewVisibleLightCameras Abstract: Withtheadvancementofimagingtechnology,largefield-of-viewvisiblelightcamerasarebecomingincreasinglypopularinvariousapplications,suchassurveillanceandremotesensing.However,thesecamerasareoftensusceptibletostraylight,whichcanhaveadetrimentaleffectonimagequality.Thispaperpresentsananalysisofstraylightinlargefield-of-viewvisiblelightcamerasandproposeseffectivestrategiestosuppressit. Keywords:straylight,largefield-of-view,visiblelightcamera,analysis,suppression 1.Introduction Largefield-of-viewvisiblelightcamerasarewidelyusedinapplicationsthatrequireabroadperspective,suchaspanoramicphotographyandsurveillancesystems.However,thepresenceofstraylightcansignificantlydegradeimagequalityandaffecttheaccuracyofimageanalysisalgorithms.Therefore,itiscrucialtounderstandthesourcesofstraylightanddevelopmethodstomitigateitsimpact. 2.SourcesofStrayLight Severalfactorscontributetostraylightinlargefield-of-viewvisiblelightcameras,includinglensflare,internalreflections,scattering,andsurfaceimperfections.Itisessentialtoanalyzethesesourcesindividuallytodevelopeffectivestrategiesforsuppressingstraylight. 3.LensFlareAnalysis Lensflareoccurswhenlightscatterswithinalenssystem,leadingtoghosting,reducedcontrast,andlensartifacts.Analyzingthelensdesign,coating,andflareindexcanhelpidentifypotentialissues.Inaddition,theadoptionoflenshoodsandanti-reflectioncoatingscansignificantlyreducelensflareinlargefield-of-viewvisiblelightcameras. 4.InternalReflectionsAnalysis Internalreflectionsoccurwhenlightraysbouncebetweendifferentopticalelementswithinthecamera,resultinginunwantedstraylight.Athoroughanalysisofthecamera'sinternalstructure,choiceofopticalmaterials,andcoatingpropertiescanhelpidentifyareaspronetointernalreflections.Utilizingbafflesandopticalfilterscanminimizeinternalreflectionsandenhancestraylightsuppression. 5.ScatteringAnalysis Scatteringreferstothediffusionoflightcausedbyirregularitiesorp