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Infrared Optics
BaF2 Crystal
CaF2 Crystal
CVD ZnS
CVD Multi-Spectral ZnS
CVD ZnSe
Ge Crystal
Hot Press ZnS
Hot Press MgF2
Hot-Pressed Polycrystalline Zinc Sulfide (HP ZnS)

Hot-Pressed Polycrystalline Zinc Sulfide (HP ZnS) has a 70% average transmittance at 3-5µm and 8-12µm, and can reach over 90% transmittance after coated. The transmittance keeps no change under 400 °C. HP ZnS has not only stable optical performance, but also higher hardness, fracture toughness and good rain erosion resistance. Those makes HP ZnS one of the best infrared window materials with comprehensively high performance used in infrared imaging and guiding systems.

Main Properties:

Transmission Wavelength (m)
112
Knoop's Hardness (kg/mm2)
300
Bending Strength (MPa)
>120
Density (g/cm3)
4.09
Transmittance
70% (810m); 95% after coated

Main Specification:

Dome: less than 270mm 10mm
Window: less than 360mm 15mm

Transmission Spectrum:

 

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