| parameter | aspherical lens standard specification |
| material | low tg glass, like d-zk3 etc. tg<600℃ |
| diameter | 1.5-120mm |
| diameter tolerance | /-0.003mm |
| decenter | 40"-120" |
| pv | 0.2-3.5μm |
| surface quality | 20-10 |
| coating | ar film, reflection film, splitter film etc. |
* remark：customized is available | |