Standard Specifications
| Material
|
BK7, FS, UVFS, CaF2, ZnSe, Si, Ge
|
| Diameter Tolerance
|
+0.0, -0.15 mm
|
| Thickness Tolerance
|
+/-1.0 mm
|
| Focal Length Tolerance |
+/- 3% |
| Centration
|
<3 arc minutes
|
| Clear Aperture
|
>90%
|
| Chamfer
|
0.25 mm @ 45o
|
| Surface Figure
|
L/4@632.8 nm
|
| Surface Quality
|
40-20 scratch & dig
|
| Design wavelength
|
632.8 nm
|
| AR coatings |
None. Please refer to the Coatings section.
|
|
Properties (Diameter D, Focal length L)
| D, mm |
D, Inches |
L Minimal, mm |
L Maximal, mm |
| 12,7 |
0.5 |
+/- 25 |
+/- 10.000 |
| 25,4 |
1 |
+/- 30 |
+/- 10.000 |
| 38,1 |
1.5 |
+/- 50 |
+/- 10.000 |
| 50,8 |
2 |
+/- 80 |
+/- 10.000 |
| 76,2 |
3 |
+/- 100 |
+/- 10.000 |
|
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