|
| RMI Standard Specifications |
| Materials: |
BK7, UVFS, FS,
CaF2, IR grade CaF2, MgF2, BaF2,
ZnSe, ZnS, Ge, Si, Cleartran, Chalcogenide glass,
Sapphire
|
Surface Figure:
BK7, UVFS, FS:
CaF2, IR grade CaF2, MgF2, BaF2:
ZnSe, ZnS, Ge, Si, Cleartran, Chalcogenide glass:
Sapphire: |
Both Surfaces
λ/20 at 633 nm
λ/4 at 633 nm
λ/40 at 10.6 µm
λ/4 at 633 nm |
Surface Quality:
BK7, UVFS, FS:
CaF2, IR grade CaF2, MgF2, BaF2:
ZnSe, ZnS, Ge, Si, Cleartran, Chalcogenide glass:
Sapphire: |
Both Surfaces
10-5
20-10
40-20
20-10 |
| Diameter Tolerance: |
+ 0.000", – 0.010" |
| Thickness Tolerance: |
± 0.010" |
| Wedge: |
≤ 5 arc minutes |
| Bevels: |
0.02"at 45º typical
|
| Clear Aperture: |
Exceeds central 85% of diameter |
|
