General Specifications | |||||
Material | F2a | N-F2a | N-SF11a | CaF2a | ZnSea |
Clear Aperture | 70% | ||||
Surface Quality (Scratch-Dig) | 40-20 | 60-40 | |||
Angular Tolerance | 5 arcmin | 10 arcmin | |||
Number of Polished Faces | 2b | 3c |
1.Material | N-BK7,FS or based on clients' requirements |
2.Dimensional tolerances | 0/-0.1mm |
3.Surface flatness | Lambda/8@633nm |
4.Clear aperture | 90% |
5.Angle accuracy | <3' / <10" |
6.Perpendicularity | <2' |
7.Surface quality | US Standard 40-20, ISO Standard 3X0.16 |
8.Edge chip | <0.1mm |
9.Bevel | <0.3mmx45° |
10.Coating | Based on client requests |