Optical windows are optical glass with ground and polished faces that are relatively parallel. They are used as a protective element between two environments and their impact on the passage of visible light is neutral.
| Specifications | |
| Material | Optical Filter |
| Dimension Tolerance | +/-0.05mm |
| Parallelism | 10 are Seconds |
| Surface accuracy | λ/10 per 25mm |
| Surface Quality | 10-5 scratch and dig |
| Bevel | 0.1 X 45 degree |
| Coating | None, AR, Mirror |
