Material
Silicon, Molybdenum mirror reflecting
Diameter Tolerance
+0.0/-0.1mm
Thickness Tolerance
±0.1mm
Clear Aperture
>= 90% Diameter
Surface Flatness
lamda/4 at 632.8nm
Scratch/Dig
S1:40-20,S2:
Parallelism
<1'
Bevelling
<0.2×45°