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 |
|