Description
We supply optical BK7 glass spherical lens, mainly include plano-convex spherical lens, plano-concave spherical lens, bi-convex spherical lens, bi-concave spherical lens, meniscus spherical lens, special spherical lens etc..
Specification of our plano-convex spherical lenses as follow:
*Material:BK7 or other materials
*Focal length:+/-1%
*Center thickness tolerance:+/-0.01mm
*Centration:1 arc minutes
*Surface Figure:lambda/2 at 633nm on plano side
*Surface quality:40/20 stratch/dig
*Clear Apenture>90%
*Chamfer Protective:0.25mm at 45 degree typical
*Coating:optional