Windows are used to isolate different physical environments while allowing light to pass. When selecting windows, you should consider materials, transmission, scattering, wavefront distortion, parallelism and resistance to certain environments.
We offer a wide range of different materials and different degree of precision windows. Special materials are available upon requirement.
A broad range of single layer or multilayer antireflective coatings on optical windows are available. Please refer to coatings for more information.
| ATTRIBUTE | SPECIFICATIONS |
| material | N-BK7, Fused Silica, Sapphire or Specified |
| DIAMETER TOLERANCE | +0.0, -0.1mm |
| thickness TOLERANCE | +0.1, -0.1mm |
| parallelism | <1 arc minute |
| CLEAR APERTURE | >90% |
| SURFACE QUALITY | 40/20 scratch and dig |
| BEVEL | < 0.2 mm x 45° |
| COATING | With AR coating on outside surfaces |
