Perforated lens: Match with optical design, holes are punched in the lens to allow light to pass through the lens, such as the hole punched in the center of the main mirror of a cassette telescope
Perforated lens specification or based on clients' requirements | |
1.Material | Domestic or foreign materials are selected based on clients' requests |
2.Diameter tolerance | 0/-0.05mm |
3.Aperture tolerance | 90%-100% |
4.Aperture tolerance | ±0.05mm |
5.Tolerance of CT or ET | ±0.05mm |
6.Vector Tolerance | ±0.015mm |
7.Aperture Tolerance | ±0.05mm |
8.Surface Quality | US Military Standard 20-10 or ISO Standard 3X0.063 |
9.Curvature Tolerance | ±1.5入 |
10.Surface Flatness | 入/4@633nm |
11.Centration | 1分 |
12.Focal Length | ±1% |
13.Edge Chip | <0.1mm |
14.Bevel | Based on clients' requests |
15.Coating | Apply reflecting coating or based on client requests |