取扱商品紹介

CVD ZnS

  • For  windows, domes and lenses for therma-imaging system
  • Standard ZnS, which appears orange, mainly works in Far-infrared region
  • Multi-spectrum ZnS (M-ZnS) shows excellent opticaproperties across the fulband of 0.4-12μm, can be used in Far-, Mid-, Near-infrared and visible regions.
  • Standard ZnS windows, lenses and domes with size up to Ø250×16mm. For M-ZnS, the maximum size is 300×200×15mm

Product Properties

Appellation Standard CVD ZnS Multi-SpectraZns
Maximum dimensions (mm) Ø250×16 300×200×15
Transmission Range,(μm) 0.6--12 0.35--12
Refractive Index 2.1998 2.2008
Temperature Change of refractive Index
@ 10.6μm, (10-6℃-1)
50 50
Bulk absorption coefficient@10.6μm,(cm-1) ≦0.2 ≦0.2
Rupture modulus,(MPa) 103.4 68

Technical Index

Appellation Standard CVD ZnS Multi-SpectraZnS
Homogeneity of refractive index <3×10-5 @0.6328μm <3×10-5 @0.6328μm
Hardness(knoop),(kg/mm2) 210-230 160
Rupture modulus,(Mpa) 103.4 68
Young's Modulus,(GPa) 74.5 74.5
Posson ratio 0.29 0.28
Melting point ,(℃) 1830 1830
Density, (g/cm3) 4.09 4.09
Thermaconductivity, (W/cm.K) 0.19 0.272
Thermaexpansion coefficient, (10-6 ,℃-1 ) 7.85 7.85
Specific heat (Ca/g.k.) 0.112 0.124
Dielectric constant 8.35 8.35

the listed index are from reference book, may be different from our products, more speciarequirements should be discussed individually. Specification

Specification

window CVD ZnS Multi-SpectraZnS
Maximum dimensions(mm) 200×300 200×300
Tolerance on these dimensions(mm) 0.1 0.1
Minimum thickness(mm) 15 15
Tolerance on thickness(mm) 0.1 0.1
dome CVD ZnS Multi-SpectraZnS
Caliber(mm) Ф300 Ф300
Tolerance on caliber(mm) 0.1 0.1
lens CVD ZnS Multi-SpectraZnS
Diameter(mm) 15-200 15-200
Tolerance on diameter(mm) Standard: 0.1
Specia: 0.03
Standard:0.1
Specia:0.03
Tolerance on curvatures(mm) Standard:0.5%
Specia:0.05%
Standard:0.5%
Specia:0.05%
Tolerance on center thickness(mm) Standard:0.1
Specia:0.05
Standard:0.1
Specia:0.05
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