| Place of Origin: | Wuhan,China |
|---|---|
| Brand Name: | Wuhan Siwer Optics |
| Minimum Order Quantity: | 4 pieces |
| Price: | 1200 USD/piece |
| Packaging Details: | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler |
| Delivery Time: | 5-7weeks |
| Payment Terms: | T/T, Western Union |
| Supply Ability: | 300 pieces/month |
| Material: | CVD Zinc Selenide | Size Tolerance: | +/-0.1mm |
|---|---|---|---|
| Chamfer: | 0.2-0.5mm | Surface Quality: | 60/40 |
| Surface Flatness: | Lambda/2 In 25.4mm | Angle Tolerance: | 6 Arc Min |
| Standard Coating: | Customized | Size Range: | 5-150mm |
| Usage: | Infared System | ||
| High Light: | right angle prism,ir prism |
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Zinc Sulphide (ZnS) is a widely used IR transmitting material in windows, lenses and prisms. The material transmits at about 50% between 0.4 -12μm before dropping off to zero transmission around 15μm. Its low absorbance in the IR spectrum makes it desirable for CO2 lasers operating at 10.6μm. Zinc Sulphide has a pale yellow to clear appearance and a hardness of HK160. Although the material is resistant to thermal shock, it is not recommended for harsh environments.
| Material | CVD Zinc Selenide |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Surface Quality | 40/20 Scratch-Dig |
| Surface Flatness (Plano Side) |
λ/2 at 633nm |
| Surface Irregularity (Peak to Valley) |
λ/4 at 633nm |
| Angle tolerance | 3 arcmin (5 seconds according to customer requirements) |
| Chemical Formula | ZnSe |
| Molecular Weight | 144.33 |
| Crystal Class | Cubic, hexagonal |
| Crystal Structure | Polycrystalline |
| Density, g/cm3 at 293 K | 5.27 |
| Melting Temperature, K | 1790 |
| Thermal Conductivity, W/(m K) at 300 K | 18 |
| Thermal Expansion, 1/K | |
| at 173 K | 5.6 x 10-6 |
| at 273 K | 7.1 x 10-6 |
| at 473 K | 8.3 x 10-6 |
| Specific Heat, cal/(g K) at 296 K | 0.081 |
| Debye Temperature, K | 246 |
| Bandgap, eV | 2.7 |
| Solubility in water at 298 K | 0.001 g/100 g H2O |
| Knoop Hardness, kg/mm2(100 g load) | 105 |
| Young's Modulus, GPa | 70 |
| Bulk Modulus, GPa | 40 |
| Poisson's Ratio | 0.28 |
