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Map Optics, specializing in aspheric optics manufacturing.

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605, No. 89, Jilong road, China (Shanghai) Pilot Free Trade Zone CN 200131

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Positive crescent shaped lens-HY-W0022

¥130.00

A crescent shaped lens is a special type of lens with a curved crescent shape. Curved crescent lenses are commonly used in optical systems to adjust the focusing, scattering, or direction of light propagation.

SKU: HY-W0022
Category:

Bent moon lenses are commonly used in multi-component optical systems to modify focal length without introducing significant spherical aberration. The optical performance of multi-element lens systems is usually significantly better than that of single lens systems. In these systems, aberrations introduced by one component can be corrected by subsequent optical components. These lenses have a convex surface and a concave surface, and they can be positive or negative lenses.

Positive crescent lens:

A positive meniscus lens is typically used in conjunction with another lens in composite optical assemblies. When used in this structure, a positive meniscus lens will shorten the focal length, increase the numerical aperture (NA) of the system, and will not introduce significant spherical aberration.

Negative crescent lens:

Negative crescent lenses are usually used together with another lens in composite optical assemblies. When used in this structure, a negative meniscus lens will increase the focal length and decrease the numerical aperture (NA) of the system.

Key Specifications
Material Optical glass Optical crystal
Diameter 3-650mm
Shape tolerance ±0.015
Surface Quality 20-10
Surface Flatness λ/10
Angle tolerance <30″
Effective aperture 85%
Diameter (mm)

25.6

Coating specifications

AR@440-780nm

material

H-LAF50B

Curvature R1 (mm)

14.7

Curvature R2 (mm)

18.72

Effective focal length (mm)

56.98

Center thickness Tc (mm)

5.12

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