Bk7 Bi-convex Spherical Lenses

We are offering bk7 bi-convex spherical lenses. bk7 bi-convex spherical lenses size and coating of the lenses can be customized according to usersã¢ï¿½ï¿½ needs specification material schott bk7 design wavelength 632.8nm focal length tolerance ã�â±1% diameter tolerance +0/-0.1mm thickness tolerance ã�â±0.1mm surface accuracy ã�â»/4@632.8nm surface quality 40-20 centration 90% bevelling