Specification of our plano-convex spherical lenses as follow:
*Material:Bk7,fused silica,CaF2,MgF2,BaF2,ZnSe infrared optical crystals.
*Focal length:+/-1%
*Length tolerance:+0.0 - -0.1mm
*Width tolerance:+0.0 - -0.1mm
*Center thickness tolerance:+/-0.1mm
*Surface Figure:lambda/2 at 633nm on plano side
*Surface quality:60-40 stratch/dig
*Clear Apenture>90%
*Chamfer:0.25mm at 45 degree typical
*Coating:optional
Plano-Convex Lens is widely use in optical display systems, projection optics systems, imaging optical systems, and laser measurement systems. It is best use where conjugate point-- object distance, S or image distance S' is more than five times of the other. This lens is almost the most super form for both collimating a point source and focusing collimated light.