Wuhan Siwer Optics Co.,Ltd
| Payment Terms | T/T, Western Union |
| Supply Ability | 1000 pieces/month |
| Delivery Time | 3-5 weeks |
| Packaging Details | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler |
| Material | Calcium Fluoride(CaF2) |
| Size tolerance | +/-0.1mm |
| Chamfer | 0.2-0.5mm |
| Surface quality | 60/40 |
| Surface flatness | Lambda/4 in 25.4mm |
| Parallelism | 0.01mm |
| Standard coating | uncoated or customized |
| Size range | 3-120mm |
| Usage | Infrared system |
| Brand Name | Wuhan Siwer Optics |
| Place of Origin | Wuhan,China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 1000 pieces/month |
| Delivery Time | 3-5 weeks | Packaging Details | 1.Tissue paper. 2.Plastic foam packaging film. 3.Hard carton box with quakeproof filler |
| Material | Calcium Fluoride(CaF2) | Size tolerance | +/-0.1mm |
| Chamfer | 0.2-0.5mm | Surface quality | 60/40 |
| Surface flatness | Lambda/4 in 25.4mm | Parallelism | 0.01mm |
| Standard coating | uncoated or customized | Size range | 3-120mm |
| Usage | Infrared system | Brand Name | Wuhan Siwer Optics |
| Place of Origin | Wuhan,China | ||
| High Light | optical window ，infrared system protectd window | ||
Calcium Fluoride (CaF₂) is commonly used for optics looking at the IR and UV spectrums and has a very low change in refractive index with wavelength.
Our CaF2 window is selected by many flame detector manufacturers, and we keep long-term cooperation. According to the design requirements of each customer, we continuously supply windows of different specifications.
| Material | Calcium Fluoride |
| Diameter Tolerance | +0.0/-0.1 mm |
| Thickness Tolerance | ±0.1 mm |
| Parallelism | 1 arc min |
| Surface Quality | 60-40 Scratch-Dig |
| Surface Flatness (Plano Side) | λ/2 at 633nm |
| Surface Irregularity (Peak to Valley) | λ/2 at 633nm |
| Clear Aperture | 90% |
| Chemical Formula | CaF2 |
| Crystal Class | Cubic, cleaves [111] plane |
| Lattice Constant, Å | 5.46 |
| Density, g/cm3 (20 °C) | 3.18 |
| Molecular Weight | 78.08 |
| Reflection Loss | 5.4% at 5 μm |
| Absorption Coefficient | 7.8 x 10-4 cm-1 @ 2.7 μm |
| Dielectric Constant for 105 Hz | 6.76 |
| Melting Temperature, K | 1630 |
| Thermal Conductivity, W/(m K) at 273 K | 10 |
| Thermal Expansion, 1/K at 300 K | 18.9 x 10-6 |
| Specific Heat, cal/(g K) at 273 K | 0.204 |
| Debye Temperature, K | 510 |
| Young's Modulus, GPa | 75.79 |
| Rupture Modulus, GPa | 0.0365 |
| Shear Modulus, GPa | 33.76 |
| Bulk Modulus, GPa | 83.03 |
| Poisson's Ratio | 0.28 |
| Knoop Hardness, kg/mm2 | 178 [100], 160 [110] |
Production process
Company Details
Business Type:
Manufacturer,Exporter,Seller
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Company profile Wuhan Siwer Optics is a professional manufacturer of various optical components.We focuses on production of optical interference filters,infrared and visible optical components. The company has optical optimization design, precision optical processing and optical coating technolo... Company profile Wuhan Siwer Optics is a professional manufacturer of various optical components.We focuses on production of optical interference filters,infrared and visible optical components. The company has optical optimization design, precision optical processing and optical coating technolo...
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