Windows are frequently used in optical systems to separate the environment in one part of the system from another, such as to seal vacuum or high-pressure cells. Because the infrared transmitting material has a high index of refraction, an anti-reflection coating is typically applied to windows to minimize losses due to reflections. Standard ZnSe Windows
Dia(mm) |
Thickness(mm) |
Wavefront Distortion |
Surface Quality |
8.0 |
2.0 |
Lambda/4 |
40-20 |
10.0 |
2.0 |
Lambda/4 |
40-20 |
12.7 |
2.0 |
Lambda/4 |
40-20 |
15.0 |
2.0 |
Lambda/4 |
40-20 |
25.4 |
3.0 |
Lambda/2 |
40-20 |
38.10 |
3.0 |
Lambda/2 |
40-20 |
|