Standard Specifications
| Material |
BK7, FS, UVFS, CaF2, ZnSe, Si, Ge |
| Centration |
<3 arc minutes |
| Focal Length Tolerance |
+/- 3% |
| Thickness Tolerance |
+/-1.0 mm |
| Diameter Tolerance |
+0.0, -0.15 mm |
| Clear Aperture |
>90% |
| Chamfer |
0.25 mm @ 45o |
| Surface Quality |
40-20 scratch & dig |
| AR coatings |
None. Please refer to the Coatings section. |
| Design wavelength |
632.8 nm |
| Surface Figure |
L/4@632.8 nm |
|
Properties (Diameter D, Focal length L)
| D, mm |
D, Inches |
L Minimal, mm |
L Maximal, mm |
| 10 x 10 |
0,5 x 0,5 |
20 |
1.000 |
| 20 x 40 |
0,75 x 1,5 |
30 |
2.000 |
|
