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:

0.5 Fringe

Irregularity:

0.2 Fringe

Coating:

With Or Without Ar Coating

Bevel:

Protective Bevel