Description
zinc selenide
zinc selenide (ZnSe) is a very good infrared material. It has a wide range of light transmission, from 0.5 microns to 19 microns. Because zinc selenide has an extremely low absorption coefficient in the 1064nm band, and has good imaging characteristics and thermal shock characteristics, it is often used as a lens and window for carbon dioxide lasers. At the same time, the excellent optical properties of zinc selenide lenses are also widely used as windows, optical lenses and optical prisms of high-definition forward-looking infrared systems.Zinc selenide products can be used in a wide range of laser systems and infrared thermal imaging systems, as well as many optoelectronic applications. Its wider bandgap properties make it suitable for detectors and emitters, and its refractive index, homogeneity and homogeneity provide superior optical properties for use as a protective window or optical element in high-resolution forward-looking infrared (FLIR) thermal imaging equipment.
Advantage
Optical properties.
Maximum transmittance 1 μm 69.2%
Maximum transmittance 10 μm 70.9%
Physical properties.
Density (20°C) 5.27 g/cm3
Hardness (20°C) 105 kg/mm2
Young’s modulus (20°C) 10.2 Mpsi
Young’s modulus (260°C) 8.9 Mpsi
Wavelength (μm) 10
Refractive index 2.40707
Specification
Material
ZnSe
Parallelism
<3'
Surface accuracy
λ/2
Diameter tolerance
+0.0mm/-0.01mm
Thickness tolerance
+0.1mm/-0.1mm
Surface Quality
60/40；40/20
Regular Size
12.7；⌀25.4；⌀50.8
