26 Sep 2023 specification:
Material |
BK7, Fused Silica,Ge,Si, CaF2. |
Diameter |
2-300mm |
Flatness |
1/4lambda or better |
Diameter Tolerance |
+0.01, -0.01 mm |
Thickness Tolerance |
±0.1 mm |
Paraxial Focal Length |
±2% |
Centration |
<3 arc minutes |
Clear Aperture |
>85% |
Surface Quality |
60-40 scratch and dig or better |
Protective Bevel |
0.25 mm x 45° |
Coating: |
Specified by customers |
Angle tolerance |
+/-30 seconds |
|