Double convex lens

Like Plano-convex lens, double convex lenses have positive focal lengths and form both real and virtual images. Symmetry is assured by finishing both surfaces with the same tool. Because of symmetry, aberrations including coma, distortion and lateral chromatic aberration almost exactly canceled at unit conjugate radio. Double convex lenses have shorter focal lengths than Plano-convex lenses of equal diameter and surface radius.

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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