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Calcium fluoride window plate with a circular aperture is a high-performance optical component known for its excellent ultraviolet and infrared transmission, superior chemical stability, and resistance to thermal fluctuations. Manufactured from high-purity CaF₂, it provides outstanding optical clarity, durability, and minimal optical distortion, making it an essential material for spectroscopy, infrared imaging, laser optics, and precision scientific instruments. Its ability to withstand harsh environments ensures reliable performance in advanced optical systems.
Product Overview
The Calcium Fluoride circular aperture window plate is a high-performance optical component commonly used as a protective window for electronic sensors or environmental detectors. Its circular aperture design allows specific wavelengths of light to pass through while effectively protecting optical instruments from external environmental influences. Calcium Fluoride (CaF₂) material boasts excellent optical properties, such as high transparency and low reflectivity, making it highly versatile in various optical systems.
Key Features
- High Transparency: Calcium Fluoride provides exceptional transparency, allowing effective transmission of ultraviolet, visible, and infrared wavelengths, ensuring superior optical performance.
- Low Reflectivity: With a low refractive index, Calcium Fluoride significantly reduces light reflection losses, thereby improving the transmission efficiency of optical systems.
- High Thermal Stability and Corrosion Resistance: The material's excellent thermal and chemical stability makes it suitable for high-temperature and corrosive environments, ensuring reliable performance in harsh conditions.
- Precision Processing: Advanced precision grinding and polishing techniques ensure smooth surface quality and high accuracy, meeting the specific demands of different applications.
Applications
- Optical Sensor Protection: Widely used to protect optical sensors or external environment detectors, preventing damage from external environmental factors.
- Laser Technology: Due to its high transparency and low scattering, Calcium Fluoride is an ideal material for resonator mirrors, output mirrors, and other components in laser systems.
- Optical Instruments: Suitable for various optical system components such as windows, lenses, and prisms, particularly in the ultraviolet, visible, and infrared wavelength ranges.
- Environmental Monitoring: Used in environmental monitoring equipment to ensure stable light transmission while minimizing interference and reflection.
| Optical Property | Value |
| Transmission Range | 0.13-10 μm |
| Transmittance | >94%@193nm-7.87μm |
| Refractive Index | 1.4288@2.5μm, 1.39908@5μm |
| Reflection Loss | 5.4%@5μm (both surfaces) |
| Absorption Coefficient | 7.8×10⁻⁴@2.7μm |
| Structure | Cubic Crystal System |
| Cleavage Planes | <111 |
| Physical Property | Value |
| Density | 3.18 g/cm³ |
| Melting Point | 1420 ℃ |
| Thermal Conductivity | 9.71 W/(m·K) @ 293K |
| Thermal Expansion | 18.5×10⁻⁶/K @ 273K |
| Knoop Hardness | 158.3 kg/mm² |
| Specific Heat Capacity | 854 J/(kg·K) |
| Dielectric Constant | 6.76 @ 1 MHz |
| Young's Modulus | 75.8 GPa |
| Shear Modulus | 33.77 GPa |
| Bulk Modulus | 82.71 GPa |
| Poisson's Coefficient | 0.26 |
| Chemical Property | Value |
| Solubility | 0.016 g/L @ 20℃ |
| Molecular Weight | 78.0748 g/mol |
| Parameter | Range |
| Diameter Range | 2-300 mm |
| Thickness | 0.12-60 mm |
| Surface Finish | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Accuracy | λ/2, λ/4, λ/8, λ/10 |
| Parallelism | <3' - 30" |
| Aperture Transmission | >90% |
| Coating | Customizable |
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