Europe, UK, Asia & RoW: [email protected] +44 (0)1622 859444 | USA & Canada: [email protected] +1 401-583-7846

BREXIT UPDATE: Knight Optical will continue to provide quality assured service for all your optical requirements both custom & stock. We will handle all requirements caused by the new regulations.

My Cart

Zinc Selenide (ZnSe) Window 20mmdia x 5mmthk

Ships within 1-2 weeks
SKU: WZN2005
More Information
Diameter (mm) 20
Material Zinc Selenide
Coating Uncoated
Thickness (mm) 5
Type Standard

Zinc Selenide is used in the form of optical windows in FLIR (Forward Looking Infrared) systems, as meniscus, spherical or cylindrical lenses and as resonator windows in CO2 lasers.

Knight Optical supply a range of quality Zinc Selenide windows either from stock or custom made to your specification. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards. Our stock windows are available from 13mm diameter up to 50mm and down to 1mm thick and cover the requirements for both laser and infrared grade CVD ZnSe.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality Zinc Selenide optical components and service can improve your instrumentation and supply chain experience.


Surface Quality:
Zinc Selenide/Zinc Sulphide
± 0.2mm
<60-40 scratch/dig

Mounting into cells.
Edging down to smaller sizes.