Meniscus lenses are divided into positive meniscus and negative meniscus lenses. One side of the meniscus lens is convex and the other side is concave. It can be a converging lens or a diverging lens, which is determined by the refractive index and the radius of curvature. Widely used in camera systems, projection systems, imaging systems, optical viewfinders, and laser measurement systems.
| Material |
CDGM
optical glass, CORNING, SCHOTT, HOYA, OHARA, and other specified materials |
|
Outer
diameter
|
φ4-φ80mm
|
|
Surface
Figure
|
≤1（0.5）
|
|
Machining
Tolerance
|
Center
thickness tolerance: ±0.05mm, outer diameter tolerance: ±0.05mm, sagittal
height tolerance: ±0.05mm
|
|
Eccentricity
|
1 arc minute
|
|
Surface
Quality
|
40/20
|
| Material |
CDGM
optical glass, CORNING, SCHOTT, HOYA, OHARA, and other specified materials |
|
Outer
diameter
|
φ4-φ80mm
|
|
Surface
Figure
|
≤1（0.5）
|
|
Machining
Tolerance
|
Center
thickness tolerance: ±0.05mm, outer diameter tolerance: ±0.05mm, sagittal
height tolerance: ±0.05mm
|
|
Eccentricity
|
1 arc minute
|
|
Surface
Quality
|
40/20
|
