1.Material | Domestic or foreign materials are selected based on clients' requests |
2.Diameter tolerance | 0/-0.01mm |
3.Clear aperture | 90%-100% |
4.Tolerance of CT or ET | ±0.02mm |
5.Vector Tolerance | ±0.015mm |
6.Aperture Tolerance | ±0.02mm |
7.Surface Quality | US Standard 10-5,ISO Standard 3X0.063 |
8.Curvature Tolerance | ±1.5Lambda |
9.Surface Flatness | Lambda/6@633nm |
10.Centration | 3 Arc minutes |
11.Focal Length | ±1% |
12.Edge Chip | <0.1mm |
13.Bevel | Based on clients' requests |
14.Coating | Apply AR or based on client requests |