基于眼模型的数字眼底相机设计

16920089OpticsandPrecisionEngineeringVol.16No.9Sep.2008:2008201211;:2008203213.:(No.60438030);(No.60577015)10042924X(2008)0921567205,(,300071):Gullstrand2LeGrand30,2106pixel;,,,,120lp/mm,0.86mm,7.2%,3.5m,,-10m-17m-1:;;:TB853.9;TH702:ADesignofdigitalretinacamerabasedoneyemodelWANGZhao2qi,XUYan(KeyLaboratoryofOptoelectronicInformationScienceandTechnology,MinistryofEducation,InstituteofModernOptics,NankaiUniversity,Tianjin300071,China)Abstract:Aportablenonmydriaticdigitalretinacamerain30fieldofviewwasdesignedbasedonGullstrand2LeGrandeyemodel.Byconsideringtheaberrationsofbothhumaneyeandcamera,thisdesignrealizedthehighlyclearimagewith2megapixelsinallfieldsofview.Andaneyemodelwasusedinthisdesigntodiminishthechromaticaberrationcausedbythehumaneyesthemselves,sothatthecameracouldbeusedinavisibleband.Meanwhile,theilluminatingsystemwithanannularstopandcoaxialilluminationwasspeciallydesignedtoremovethestraylightcausedbyacornea.Thetest2edresultshowsthattheresolutionofthissystemishigherthan120lp/mm,andthedistortionvalueisonly7.2%,thefieldcurvevalueandthechromaticvaluearelessthan0.86mmand3.5m,respec2tively.Itcomestoaconclutionthatthiscamerahasstrongfocusingabilities,andadaptstodifferenteyesfrom-10m-1to7m-1.Keywords:opticaldesign;retinacamera;eyemodel1,,,,,,,Zeiss1925,,,:,,,,,,,,,,,,,[122],,,[3][4],,[324],,Gullstrand2LeGrand[526],,,,,,23CCD;;:,,,,,,,,,;[728]:,,,,,,,Gullstrand-LeGrand,4,,11Gullstrand2LeGrandFig.1Gullstrand2LeGrandeyemodel:CCDLCD,,33.1:37mm,865116:100lp/mm;120lp/mm:250mm,:30:1.27cm2106pixelCCD,8mm,8mm:,420580nm3.23.2.1,,,,,,,,,,45Petzval4[9],2,,,;,,,303,33.2.2(1),ZEMAX,(2),,250mm;8mm(3),,MTF120lp/mm(4),,,,Petzval,,44Fig.4Configurationofphotographicsystem3.2.3,,,,,,:,,CCD,CCD,,ZEMAX,CCD-10m-17m-1,96519,:CCD3.67mm,-0.06+0.24mmCCD,3.345,,,37mm,4mm;,7.4mm,,,,,:6mm,20mm;5.2mm,11mm55Fig.5Configurationofilluminatingsystem3.4159.3mm,27mm,58.7g98.1mm,176.2mm162.1g200mm(H)60mm(W)250mm(D),1.2kg,250g,CCD100g,LCD400g,50g,400g1.5kg4,,2106pixelCCD,120lp/mm6MTF,7,0.86mm,7.2%,,87mm,3.5m,5m,CCD3.9m(H)3.9m(V),,0751168Fig.8Curvesoflateralcolor5,,,,Gullstrand2LeGrand,,,,,:[1]LIANGJZH,WILLIAMSDR.Aberrationsandretinalimagequalityofthenormalhumaneye[J].J.Opt.Soc.Am.A,1997,14(11):287322883.[2],,,.[J].,2005,34(11):166621669.GUOHQ,WANGZHQ,ZHAOQL,etal..Eyemodelbasedonwavefrontaberrationmeasuredsubjectively[J].ActaPhotonicaSinica,2005,34(11):166621669.(inChinese)[3]LIANGJZH,WILLIAMSDR,MILLERDT.Supernormalvisionandhigh-resolutionretinalimagingthrougha2daptiveoptics[J].J.Opt.Soc.Am.A,1997,14(11):288422892.[4],,,.[J].,2004,24(9),115321158.LINGN,ZHANGYD,RAOXJ,etal..Asmalladaptiveopticalimagingsystemforcellsoflivinghumanretina[J].ActaOpticaSinica,2004,24(9):115321158.(inChinese)[5]MOUROULISP.VisualInstrumentation[M].NewYork:McGraw-Hill,1999:1062110.[6]BLAKERJW.Towardanadaptivemodelofthehumaneye[J].J.Opt.Soc.Am.A,1980,70(2):2202223.[7],,.[J].,2007,15(4):4862491.YANGHM,WANGLJ,FENGXH.Designofanewcompleximagingobjectlens[J].Opt.PrecisionEng.,2007,15(4):4862491.(inChinese)[8],,,.[J].,2007,15(7):102621031.YANGHM,ZHANGX,FANGZHL,etal..Designofaphotographicobjectiveusingcubicphaseplate[J].Opt.PrecisionEng.,2007,15(7):102621031.(inChinese)[9],,,./Petzval[J].,2005,13(1):124.WANGZHQ,ZHANGYN,FURL,etal..Designofhybridrefractive/diffractivepetzvalobjectiveinvisibleband[J].Opt.PrecisionEng.,2005,13(1):124.(inChinese):(1944-),,,,,E2mail:[e-mail](1983-),,,,E2mail:[e-mail]17519,: