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
 
 
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Properties

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


 
Specifications
 
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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