Calcium fluoride window
|
Material |
CaF2 |
|
Irregularity (fringe) |
l/4 |
|
Diameter Tolerance |
±0.05mm |
|
Thickness Tolerance |
±0.2mm |
|
Clear Aperture |
>85% |
|
Parallelism |
5 arc min |
|
Surface Quality |
40-20 |
|
Wavefront Distortion |
l/4 per 25mm |
|
Coating |
none or according to customer’s specifications |
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