ZnS optical components

SINOPTIX supplies various optical components made of optical grade Zinc Sulfide. ZnS is a clear to slightly yellowish material, partially transparent in the visible, with two main grades : multispectral or FLIR.

Zinc Sulfide characteristics

Zinc Sulfide substrates used by SINOPTIX  are manufactured by CVD (Chemical Vacuum Deposition) technology in China.

ZnS properties chart

Material denomination Zinc Sulfide
Chemical elements ZnS
Refractive index 2.2 in the visible  (2.89 @ FLIR)
Transmission range 0.37 µm to 14µm
Density 4.09 g/cm3
Hardness 210-240 kg/mm2
Young’s modulus 74.5 GPa
Thermal expansion 6.8*10-6 °K-1
Thermal conductivity 16.7 W/(m*°K)
Melting point 1293 °K  (1020°C)

Please visit our complete guide on ZnS optics to know more.

Note

2 grades of ZnS are available, be sure to ask for the one you need.

Zinc Sulfide optical components capabilities

Manufacturing capabilities

Properties Values
Available dimensions Diam 3 to D200mm
Dimensional tolerances +/-0.05mm
Thickness up to 100mm
Surface quality S&D : 40/20
Flatness lambda/2
Roughness Lambda/20 nm
Parallelism better than 5″
Thickness tolerance +/- 0.02mm
Centration 30 to 60 arcsec
Coatings multispectral AR or 7.5-12µm (thermal) AR

SINOPTIX ZnS optical components references:

Available Zinc Sulfide components

Below components are commonly used in the field of thermal imaging, medicine, night vision or defence.

We can propose below kinds of optical components :

Zinc Sulfide as an solution for IR applications

ZnS has a good optical transmission in the thermal IR (8 to 12µm) and mid-IR. Optical transmission can also be enhanced on the visible range with the multrispectral ZnS grade. It is therefore a very interesting material for IR / Thermal cameras and sensors.

Moreover the material can resist to harsh working conditions, which is an advantage for outdoor applications.

Request for a quote of ZnS components