| Material |
Lithium Fluoride  |
| Flatness |
Lambda/2 at 633 nm per inch |
| Scratch-Dig |
60 - 40 |
| Size tolerance |
± 0.1 mm |
| Parallelism |
less than 5 arc minutes |
| Clear aperture |
90 % |
| Bevels |
(0.2-0.5)mm x 45° | |
|
|
|
|
 |
Diameter, mm |
Thickness, mm |
Part Number |
| 12.7 |
2 |
W4-05 |
| 25.4 |
3 |
W4-10 |
| 38.1 |
4 |
W4-15 |
| 50.8 |
6 |
W4-20 |
| 76.2 |
8 |
W4-30 |
| |
|
|
| Sizes up to 150 mm diameter x 15 mm thickness are available by special order. | | |
|
