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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
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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