Glass substrates and windows
|
|
| Material |
BK7 |
Fused silica |
| Refraction index, ne |
1,51872 |
1,4601 |
| Spectral range |
0,4 – 1,5 |
0,18 – 3,5 |
| Ñïåêòð Spectral characteristics |
 |
 |
Standard items
|
Standard dimensions,
mm |
Surface quality |
Surface accuracy |
Wave front distortion |
Parallelism |
| Substrates |
Diameter |
Thickness |
S/D
20/10 |
Flatness: λ/4
Irregularity: λ /2
|
- |
30'' |
| 50-0.1 |
10±0.1 |
| 30-0.1 |
6±0.1 |
| 25-0.1 |
| 20-0.1 |
| 15-0.1 |
| 10-0.1 |
| Windows |
50-0.1 |
3±0.1 |
60/40 |
Flatness: λ
Irregularity: λ /2
|
1l |
3' |
| 1±0.1 |
| 30-0.1 |
3±0.1 |
| 1±0.1 |
| 25-0.1 |
3±0.1 |
| 1±0.1 |
| 20-0.1 |
3±0.1 |
| 1±0.1 |
| 15-0.1 |
3±0.1 |
| 1±0.1 |
| 10-0.1 |
3±0.1 |
| 1±0.1 |
|
