sapphire optical windows

sapphire optical windows
Windows are applied to isolate different physical environments while allowing light to pass.When selecting windows you should consider materials,transmisson,scattering, wavefront distortion,parallelism and resistance to certain environment.DND-OPTICS offers a wide range of different materials and different degree of precision windows.

Materials:BK7,UV Fused silica,CaF2,BaF2 typically,also Borofloat 33,Pyrex.Other glasses are available according to customers' requirement.

*Single crystal sapphire possesses a unique combination of excellent optical, physical and chemical properties. The hardest of the oxide crystals, sapphire retains its high strength at high temperatures, has good thermal properties and excellent transparency. It is chemically resistant to common acids and alkali at temperatures up to 1000 °C as well as to HF below 300 °C . These properties encourage its wide use in hostile environments where optical transmission in the range from the vacuum ultraviolet to the near infrared is required. Sapphire is anisotropic hexagonal crystal. Its properties depend on crystallographic direction (relative to the optical C-axis).

*Specifications:
Material: Sapphire
Dimension Tolerance: +0.0, -0.1mm
Thickness Tolerance: ± 0.1mm
Surface quality: 80/50
Clear Aperture: >85%
Flatness: λper 25mm
Parallelism: 3'
Bevel: <0.25mm X 45°
Coating: Upon requirement

Please feel free to contact with us.Your specific requirements will be satisfied in professional service.Please refer to http://www.dnd-optics.com