Zinc Selenide – ZnSe
lenses, windows, mirrors, filters and prisms
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|
|Melting Point (°)||1525|
|Reflection Loss||29% (10.6µ) for 2 surfaces|
|Hardness (Knoop)||120/50gm indenter|
|Thermal Conductivity (cal/cm sec°C)||18Wm-1 °K-1 (25°C)|
|Thermal Expansion coefficient (/°C)||7.57x10-6/°K|
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