40mm Diameter Uncoated, Zinc Sulfide (ZnS) Multispectral Window

Product Details Multispectral Grade Zinc Sulfide (ZnS) Substrate Low Absorption and Low Scatter from 0.4 – 12μm Available Uncoated or 3 – 12μm Broadband AR Coated Option TECHSPEC Zinc Sulfide (ZnS) Multispectral Windows are manufactured from a water-free, multi-spectral grade of zinc sulfide (ZnS) that has low absorption and scatter properties over its broad transmission range of 0.4 – 12μm. Like our TECHSPEC Zinc Selenide Windows, Zinc Sulfide (ZnS) Multispectral is a chemical vapor deposited material which is commonly used in thermal imaging. With its excellent transmission properties in the visible and infrared, Zinc Sulfide (ZnS) Multispectral is the material of choice for systems that have both visible and mid-wave or long-wave infrared sensors. It is slightly harder and more chemically resistant than zinc selenide. TECHSPEC Zinc Sulfide (ZnS) Multispectral Windows are offered uncoated or in a 3 – 12μm Broadband AR Coated Option. These windows are available in diameters ranging from 12.5 to 50.80mm with a 2, 3, or 4mm thickness. Note: Although special handling is required, acetone may be used to remove particles or debris from the windows. Specifications General Type: Protective Window Type of Window: Crystal Physical & Mechanical Properties Clear Aperture CA (mm): 36.00 Diameter (mm): 40.00 +0.0/-0.1 Thickness (mm): 4.00 ±0.1 Parallelism (arcmin): <1 Dimensional Tolerance (mm): +0.0/-0.1 Bevel: Protective as needed Clear Aperture (%): 90.00 Edges: Fine Ground Poisson's Ratio: 0.27 Young's Modulus (GPa): 74.5 Knoop Hardness (kg/mm 2 ): 210.00 Optical Properties Coating: Uncoated Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Zinc Sulfide Multispectral Index of Refraction (n d ): 2.371 Surface Quality: 60-40 Wavelength Range (nm): 400 - 12000 Surface Flatness (P-V): λ/10 @ 10.6μm Material Properties Density (g/cm 3 ): 4.08 Coefficient of Thermal Expansion CTE (10 -6 /°C): 6.8 Regulatory Compliance RoHS 2015: Compliant × Reach 224: Compliant × Certificate of Conformance: View ×