Basic Info.

Product Description

Cylindrical lens is used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line.they are available in either plano concave or plano convex configurations. plano-concave cylindrical lenses have a negative focal length and are used for image reduction or to spread light. plano-convex cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications. plano-convex cylindrical lens,plano-concave cylindrical lens,bi-convex cylindrical lens,bi-concave cylindrical lens,meniscus cylindrical lens,long cylindrical lens,special cylindrical lens etc.. specifiction of our cylinderical lens as follow: *material bk7 or other optical materials *dimension tolerance +0.0 -- -0.1mm *center thickness +/-0.1mm *focal length tolerance+/-1% *surface quality:20/10 *surface figure lambda/2 at 633nm on plano side *clear aperture >90% *chamfer 0.25mm at 45 degree typical *coating optional