Zinc Sulphide (ZnS)
Zinc Sulphide (ZnS) is used for manufacturing of infrared optics in spectral range 0.4m - 13.5m where maximum transmission and lowest absorption are required,. ZnS CVD (the chemical vapor deposition process) material, is often used in the 3 to 5 micron and 8 to 12 micron region. Its high resistance to rain erosion and high-speed dust and particulate abrasion makes it particularly suitable for exterior IR windows on aircraft frames. ZnS has a lower cost relative to ZnSe and ZnS MS, and has potential wherever a tough and strong IR transmitting material is required.
Lightkey Technology can provide Spherical Lenses, Aspherical Lenses, Diffraction Mirrors except standard Windows, Mirrors and lenses. Also, blanks are available here

1. CVD laser grade
2. High transmission and low absorption.
3. Remarkable fracture strength and hardness.
4. High resistance to erosion and abrasion.

Clear Aperture                                  90%
Dimensionl Tolerance                       +0.0/-0.1mm
Thickness Tolerance                         0.1mm
Center Thickness Tolerance              0.2mm
Surface Quality                                10/5
Centering                                         3 arcminutes
Surface Accuracy                             1/10 lambda @ 10.6m
Parallelism                                       <30 second
Coating:                                           As per the request


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