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Silicon Germanium CVD ZnS ZnSe Sapphire Crystal

Infrared Optics

CVD ZnS

ZnS is grown by chemical vapor deposition (CVD) method, for windows,domes and lenses for thermal-imaging system. CVD ZnS, which appears orange, mainly works in Far-infrared region Multi-spectrum. ZnS..

产品说明

ZnS is grown by chemical vapor deposition (CVD) method, for windows,domes and lenses for thermal-imaging system.

CVD ZnS, which appears orange, mainly works in Far-infrared region Multi-spectrum. ZnS (M-ZnS) shows excellent optical properties across the full band of 0.4-12μm, can be used in Far-, Mid-, Near-infrared and visible regions. CVD ZnS windows, lenses and domes with size up to Ø250×16mm. For M-ZnS, the maximum size is 300×200×15mm.

Physical and Optical Properties:

Growing Method	Chemical Vapor Deposition(CVD)
Melting Point	1700℃
Transmission Band	3-12μm
Bulk Absorption Coefficient	<0.24cm^-1@10.6μm
Density	4.08g/cm3
Refractive Index	2.200 at 10.6μm
Mohs Hardness	3
Young's Modulus	74.5 GPa
Thermal Conductivity	0.167W/cm/℃ @20℃
Specific Heat	0.112cal/g/℃
Thermal Expansion	7.85x10^-6/℃ at 20℃

Specifications:

Material:	ZnS
Dimension Tolerance:	+0.0/-0.1mm
Thickness Tolerance:	±0.1mm
Surface quality:	60/40
Clear Aperture:	>85%
Flatness:	λ/2@633nm
Parallelism (Centration):	3'

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