Aistana offers a wide range of different materials and different degree of precision windows. Special materials are available upon request.
- Laser grade optical substrates, flat, spherical and cylindrical
- Fused silica windows offer the broadest transmission range available
- Glass windows are an ideal choice for high quality visible applications
- Master flats are stable, precision optical surface reference standards
Surfaces are polished up to 10-5 and could hold parallel < 5 arc sec. Flatness of 10 is recommended but some less expensive 4 glass windows are offered for situations where flatness is not so critical.
| maximum | minimum | |
| Diameter | 200 | 2 |
| Diameter tolerance | - | 0.02 |
| Clear aperture | 95% | - |
| Thickness | 200 | 0.1 |
| Thickness tolerance | - | 0.02 |
| Surface Figure | - | 0.1 |
| Surface Quality | 120-80 | 10-5 |
| Parallelism | - | 2 sec |
| Chamfer edges | - | 0.2 |
| Chips | - | 0.2 |
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