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Meniscus lens consists of two spherical lenses with smaller curvature radius and almost similar dimensions. When chosen in appropriate thickness, they will hold the achromatic capacity and produce the negative optical power as well as the negative spherical aberration.
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Meniscus lens consists of two spherical lenses with smaller curvature radius and almost similar dimensions. When chosen in appropriate thickness, they will hold the achromatic capacity and produce the negative optical power as well as the negative spherical aberration.


Meniscus lens specification or based on clients' requirements


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 Military Standard 10-5，ISO Standard 3X0.063

8.Curvature Tolerance

±1.5入

9.Surface Flatness

入/10@633nm

10.Centration

1分

11.Focal Length

±1%

12.Edge Chip

＜0.1mm

13.Bevel

Based on clients' requests

14.Coating

Apply AR or based on client requests