ZnS MultiSpectral is Infrared's zinc sulfide materialwith minimal scatter and high transmission
characteristics from 0.4 to 12 microns. This material is particularly well suited for high-performance
common aperture systems that must perform across a broad wavelength spectrum.We offer ZnS MS material
to exacting specifications of dimensional shape and tolerances. ZnS material is also available in random
sizes and shapes for use as evaporative source material.
Property of ZnS
|
Density |
4.08g/cm3 |
|
Hardness |
105Kg/mm2 |
|
Bulk Absorption Coefficient @10.6µm |
¡Ü0.15cm-1 |
|
Max.Transmission @7-12um |
>70% |
|
Temperature Change of Refractive Index @10.6µm |
54 x 10-6/¡ãC |
|
Refractive IndexInhomogeneity @10.6µm |
< 20 x 10-6 |
|
Thermal Conductivity @ 20¡ã C |
0.27 W/cm/¡ãC |
|
Specific Heat |
0.527 J/g/¡ãC |
|
Linear Expansion Coefficient @ 20¡ã C |
6.5 x10-6/¡ãC |
|
Young¡¯s Modulus |
85.5 GPa (12.4 x 106 psi) |
|
Knoop Hardness |
210kg/mm2 |
|
Poisson¡¯s Ratio |
0.27 |
Main specification
|
Material |
ZnS |
|
Diameter Tolerance |
+0.0/-0.05-0.1 |
|
Tolerance of center thickness |
+/-0.05-0.1 |
|
Variation of edge thickness |
+/-0.05-0.1 |
|
Clear Aperture |
¡Ý90% |
|
Flatness @633nm |
¦Ë/4 |
|
Surface Quality |
40/20 S/D for Plano
60/40 S/D for CV/CX |
|
Parallelism |
¡Ü3¡¯ |
|
Coating |
AR coating | |
