Zinc Selenide – ZnSe

lenses, windows, mirrors, filters and prisms

Zinc Selenide – ZnSe is used for Infrared windows, lenses, mirrors and prisms in the region 0.5 microns to 22 microns, major uses being laser optics and Forward Looking IR systems (FLIR).

Transmission Range 0.5 – 22.0 µ
Crystal Structure Polycrystalline Cubic
Cleavage Plane None
Colour Yellow
Density 5.27
Melting Point (°) 1525
Reflection Loss 29% (10.6µ) for 2 surfaces
Solubility index Insoluble
Hardness (Knoop) 120/50gm indenter
Thermal Conductivity (cal/cm sec°C) 18Wm-1 °K-1 (25°C)
Thermal Expansion coefficient (/°C) 7.57×10-6/°K

Zinc Selenide has very low absorption of energy making it extremely useful for optical components in high power laser window applications. ZnSe is also valuable in high resolution thermal imaging systems, where it can correct for colour distortion, often inherent in other lenses used in the process.

We tend to sell more Zinc Selenide windows and Zinc Selenide lenses than mirrors, filters or prisms.

Zinc Selenide (ZnSe) windows and Zinc Selenide (ZnSe) lenses

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