Cylindricallensisusedtocorrectastigmati***(散光)intheeye,and,inrangefinders(测距仪),toproduceastigmati***,stretchingapointoflightintoaline.Theyare***ailableineitherplanoconc***eorplanoconvexconfigurati***.Plano-Conc***eCylindricallensesh***eanegativefocallengthandareusedforimagereductionortospreadlight.Plano-ConvexCylindricallensesh***eapositivefocallength,whichmakesthemidealforcollectingandfocusinglightformanyimagingapplicati***.Plano-convexcylindricallens,plano-conc***ecylindricallens,bi-convexcylindricallens,bi-conc***ecylindricallens,meniscuscylindricallens,longcylindricallens,specialcylindricallensetc..Specifictionofourcylindericallensasfollow:*MaterialBK7orotheropticalmaterials*DimensionTolerance+0.0---0.1mm*CenterThickness+/-0.1mm*FocalLengthTolerance+/-1%*SurfaceQuality:20/10*SurfaceFigurelambda/2at633nmonplanoside*ClearAperture>90%*Chamfer0.25mmat45degreetypical*CoatingOptional)