issue date：2016-3-31 15:35:44 visit frequency：3038
Zinc Sulfide (ZnS) is a chemically inert material, has high purity, insoluble in water,moderate density, easy processing characteristics,.It widely application in the making of fairing and infrared optical element. As zinc selenide (ZnSe) materials, zinc sulfide(ZnS) is too a kind of refractive index homogeneity and consistency of good material, with good Image transmission performance in the 8-12u M wavelength, but it has part absorption after 10um. The material in the mid infrared band also has higher transmittance, but the absorption and scattering will enhancement with shorter wavelength .Compared with zinc selenide(ZnSe), zinc sulfide (ZnS) has low price, high hardness, twice fracture strength than the ZnSe (ZnSe), resistance to harsh environment capability.
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Material |
ZnS |
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Shape |
Circular, Square, Spherical |
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Sizes |
3 to 150mm or custom |
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Tolerant |
±0.2mm(General Precision),±0.01(High Precision) |
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Surface Quality |
60-40(General Precision), 20-10(High Precision) |
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Surface Flatness |
λ/2(General Precision),λ/8(High Precision) |
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Parallelism |
3 arc min(General Precision), 1 arc sec(High Precision) |
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Clear Aperture |
>90% |
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Centration |
3 arc min(General Precision), 30 arc sec(High Precision) |
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Angles/Deviation |
+/-3 arc min(General Precision), +/-5 arc sec(High Precision) |
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Bevels |
0.2–0.3mm x 45deg |
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Coatings |
Uncoated, AR, HR, PR Coating, etc |
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