.

Positive Meniscus Lens

These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.

Capability

Material:

Optical glass, Fused silica, CaF2, Si, Ge, etc.

Diameter:

1-500mm

Diameter tolerance:

+0/-0.05mm

Clear aperture:

> 90% of diameter

Center thickness:

Thickness tolerance:

+/-0.05mm

Radius:

2 - 50000mm

Radius tolerance:

+/-0.1%

Centration:

30 arc seconds

Surface quality:

20-10 scratch and dig

Power:

Irregularity:

Coating:

with or without AR coating

Bevel:

Protective bevel

l Capability is subject to the change of material used and dimension.


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