Zinc Sulfide Window (ZnS) Description
Zinc Sulfide Window (ZnS) is an infrared optical window/substrate material with excellent performance. It has a transmission range of 3-13um and is not easy to deflect. It is the most commonly used mid- and far-infrared window material. Zinc Sulfide (ZnS) has good refractive index uniformity and consistency and has good image transmission performance in the 8-12μm band, but some parts begin to absorb after 10um. The transmittance is higher in the mid-infrared band, and as the wavelength becomes shorter, absorption and scattering increase. Zinc sulfide (ZnS) has strong resistance to harsh environments, high hardness, and twice the breaking strength of zinc selenide (ZnS).
Zinc Sulfide Window (ZnS) Specifications
Material
|
ZnS
|
Index of Refraction nd
|
2.371
|
Clear Aperture (%)
|
85
|
Coefficient of Thermal Expansion CTE (10-6/℃)
|
6.8
|
Edges
|
Fine Ground
|
Knoop Hardness (kg/mm2)
|
210
|
Poisson's Ratio
|
0.27
|
Surface Quality
|
60-40
|
Young's Modulus (GPa)
|
74.5
|
Density (g/cm3)
|
4.08
|
Parallelism (arcmin)
|
<3
|
Surface Flatness (P-V)
|
λ/20 @ 10.6μm
|
Wavelength Range (nm)
|
400-12000
|
Zinc Sulfide Window (ZnS) Application
Zinc Sulfide Window (ZnS) is widely used in spectroscopic prisms, transmission windows and lenses of Fourier transform infrared spectrometers, infrared spectrophotometers and infrared devices.
Zinc Sulfide Window (ZnS) Packaging
Our Zinc Sulfide Window (ZnS) is carefully handled during storage and transportation to preserve the quality of our product in its original condition.