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Zinc Sulfide Multispectral |
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Zinc Sulfide Mutilspectral s a water-free form of Zinc Sulfide. A Chemically Vapor Deposited (CVD) material , multi-spectral ZnS has low absorption and scatter properties over its relatively broad transmission range. Due to its good transmission in the visible and infrared, ZnS multi-spectral grade is an ideal choice for systems utilizing a visible camera, and various infrared detectors or an infrared camera in the infrared region. It is about one third harder than ZnSe and about 2/3 the hardness of ZnS, regular. The cost is about 1/3 more than ZnS regular and about the same as ZnSe. This type of ZnS does not have absorption in the 6µm region as found in regular CVD-type material. It is also a good choice for IR-visible systems. |
| Optical property |
| Density,g/cm3 |
4.09 |
| Young's Modulus,GPa |
65X10-6 |
| Dielectric Constant for 35Hz at 25°C |
8.993 |
| Specific Heat,cal/(gK) |
0.527 |
| Knoop Hardness,kg/mm2 |
210-240 |
| Poisson's Ratio |
0.27 |
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| Refractive Index |
Wevelength (µm) |
n |
Wevelength (µm) |
n |
1 |
2.292 |
8 |
2.223 |
2 |
2.265 |
9 |
2.212 |
3 |
2.257 |
10 |
2.200 |
4 |
2.552 |
11 |
2.186 |
5 |
2.246 |
12 |
2.170 |
6 |
2.240 |
13 |
2.141 |
7 |
2.232 |
14 |
2.130 |
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MS ZnS Plano convex lens |
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Material |
Multispectral Zinc Sulfide |
General |
Precise |
| Dimension Tolerance |
+/-0.1mm |
+/-0.05mm |
| Claer Aperture |
80% |
90% |
| Deviation |
3min |
1min |
| Surface Faltness |
1/4L@
633nm |
1/8L@633nm |
| Surface Quality |
40-20 |
10-5 |
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