Sapphire window is the most common type of window. It has good performance over visible and near infrared wavelength region. At the same time,BK7 window is ideal for applications require minimal transmitted beam deviation. It is suitable for coating AR film.
Material | Sapphire/BK7 or other material |
Diameter | 2-300mm |
Surface Figure | λ/[email protected] |
Diameter Tolerance | +0.0,/-0.15 mm |
Thickness Tolerance | ±0.1 mm |
Parallelism | <3 arc minute |
Clear Aperture | >90% |
Surface Quality | 60-40 scratch and dig or better |
Bevel | 0.25 mm x 45° |
Coating: | Specified by customers |