| Materials | Illustration | Property and Application | |
| Windows | Sapphire YAG BK7 UVFS CaF2 MgF2 |
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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 environment. |
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| Flatness: | l /10@632.8nm |
| Diameter Tolerance: | +0.0, -0.15mm |
| Thickness tolerance : | ±0.2mm |
| Clear Aperture: | >80% |
| Surface Quality: | 20-10 scratch and dig |
| Bevel: | 0.25 mm x 45° |
| Coat: | uncoated |
| Bevel | :Propective Bevel |
