Material:H-K9L (CDGM) | Surface Figure:λ/4@633nm |
Centration:<3' | Surface Quality:60/40 |
Dimension Tolerance:+0.0/-0.1mm | Thickness Tolerance:±0.2mm |
EFL Tolerance:±2% | Bevel:0.2~0.5mmX45° |
Coating:See details in the list | |
Rear Surface:Fine ground or commerical polished |