parameter | lens standard specification |
material | glass, fused silica etc. |
diameter | 2~180mm |
diameter tolerance | /-0.01mm |
decenter | 3' |
flatness(in 25mm area) | n=3, △n=0.1 |
surface quality | 40-20 |
chamfer | c0.1mm, 45° |
coating | ar film, reflection film, splitter film etc. |
* remark:customized is available |