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 | 0.02mm |
| Standard coating | uncoated or customized |
| Size range | 3-120mm |
| Usage | UV and IR optica viewport windows |
| Brand Name | Wuhan Siwer Optics |
| Model Number | Plano surface window |
| 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 | 0.02mm |
| Standard coating | uncoated or customized | Size range | 3-120mm |
| Usage | UV and IR optica viewport windows | Brand Name | Wuhan Siwer Optics |
| Model Number | Plano surface window | Place of Origin | Wuhan,China |
| High Light | ir window ，infrared system protectd window | ||
Calcium Fluoride is used for optical windows, drilled discs, lenses and prisms in transmision range 0.15-9µm. Degradation due to to moisture in the atmosphere is minimal, and polished surfaces of the CaF2 windows may be expected to withstand several years exposure to normal atmospheric conditions.
Since they are nonaxial, CaF2 crystals do not require consideration of axial direction. Because of CaF2 low refractive index, Calcium Fluoride windows can be used without an anti-reflection coating.
Typical applications: VUV - UV - IR imaging systems, excimer laser windows, CaF2 viewport, Spectroscopic windows and lenses.We produce CaF2 windows and mirrors for European manufacturers of gas detectors and gas analyzers.
| 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
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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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