Zinc selenide (ZnSe) optical window

K9 optical window


  • Zinc selenide is a very good infrared material. It has a wide light transmission range from 0.5 microns to 19 microns. Because of its good imaging and thermal shock characteristics, it is often used as the lens and window of carbon dioxide laser.

  • light transmission range: 500nm ~ 19000nm.

  • coefficient of thermal expansion: 7.6×10-6/k.

  • density: 5.27g/cm3

Technical parameters
Items Parameters
Material Zinc selenide (ZnSe)
Radius of curvature ± 1mm - ± 50000mm ± 1%
Diameter 3mm-300mm ± 0.1mm
Center thickness tolerance ± 0.05mm (we can process to ± 0.01mm with high precision)
Center deviation 3′(we can process to 30 ″with high precision)
Surface accuracy λ/ 2
Surface quality 60/40
Effective caliber ≥90%
Coating According to the custom requirements
spectral curve

In addition, We can customize the optical window according to customer requirements or drawings.

For details, please consult:

Related Products