球差补偿板深入了解

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1、.AnIn-DepthLookatSphericalAberrationCompensationPlatesAnIn-DepthLookatSphericalAberrationCompensationPlateshttp://www.edmundoptics.com/technical-resources-center/optics/an-in-depth-look-at-spherical-aberration-compensation-plates/EdmundOpticsInc.http://www.edmundoptics.comFigure1:Illustr

2、ationofSphericalAberrationOpticalaberrationsaredeviationsfromaperfect,mathematicalmodel.Itisimportanttonotethattheyarenotcausedbyanyphysical,optical,ormechanicalflaws.Rather,theycanbecausedbythelensshapeitself,orplacementofopticalelementswithinasystem,duetothewavenatureoflight.Opticalabe

3、rrationsarenamedandcharacterizedinseveraldifferentways.Forsimplicity,consideraberrationsdividedintotwogroups:chromaticaberrations(presentwhenusingmorethanonewavelengthoflight)andmonochromaticaberrations(presentwithasinglewavelengthoflight).Formoreinformationonaberrations,viewChromaticand

4、MonochromaticOpticalAberrationsandComparisonofOpticalAberrations.Oneofthemostcommontypesofmonochromaticaberrationsissphericalaberration.Sphericalaberrationistheresultoflightfocusingatdifferentlocationsbasedonitsradialdistancefromthelenscenterresultinginpoorsystemperformance(Figure1).Thou

5、ghsphericalaberrationispresentinallsphericaloptics,aninnovativewaytocorrectforitisbyemployingsphericalaberrationcompensationplatestoreduceorremoveknownquantitiesofsphericalaberrationinasystem.WHATARESPHERICALABERRATIONCOMPENSATIONPLATES?Bycompensatingandcorrectingforaknownamountofspheric

6、alaberration,sphericalaberrationcompensationplatesaresingle-elementopticalcomponentsthatcanbeeasilyinsertedintoasystem,reducingspotsizeanddrasticallyimprovingimagequality(Figures2a–2b).Thesecorrectorplatessignifyachangeinthewayaberrationcorrectioncan...behandled.Bycorrectingforknownamoun

7、tsofsphericalaberration,theysaveindesigntime,reductionofsystemweightaswellasmanufacturingcosts.Sphericalaberrationcompensationplatesaredesignedtobeusedincollimatedspacenearapupil.Theyshouldbeusedforsystemsthathavesmallfieldsofviewsuchaslasersystemsorapplicationsimagingpoi