The optical hexahedron of precision is used as a cooperative target for calibration.
Optical hexahedron specification or based on clients' requirements | |
1.Material | N-BK7,FS or based on clients' requirements |
2.Dimensional tolerances | 0/-0.1mm |
3.Surface flatness | 人/8@633nm |
3.Clear aperture | >95% |
4.Angle accuracy | 2 arc minutes |
5.Surface Quality | US Military Standard 40-20,ISO Standard 3X0.16 |
6.Edge Chip | <0.1mm |
7.Bevel | Based on clients' requests |
8.Coating | Metal reflective coating or based on clients' requests |