new material
Barium fluoride double-concave lens is a high-performance optical component designed for controlled beam expansion, minimized spherical aberration, and superior ultraviolet and infrared transmission. Manufactured from high-purity BaF₂, it offers exceptional optical clarity, strong resistance to environmental degradation, and excellent thermal stability. This precision lens is widely used in laser systems, spectroscopy, aerospace applications, and scientific instrumentation, ensuring optimal light manipulation and performance for advanced optical systems.
Product Overview
The Barium Fluoride (BaF₂) double-concave lens is an optical element with a double-concave shape, typically made from high-purity barium fluoride material. Both sides of the lens are concave, allowing it to effectively refract light, causing beam expansion or divergence. BaF₂ is known for its high melting point, excellent chemical stability, and relatively high light transmission, making it ideal for optical systems operating in the ultraviolet, visible, and infrared spectrum ranges. This lens is widely used in laser optical systems, low-temperature imaging systems, aerospace optical systems, and more.
Key Features
- High Hardness: Barium fluoride has a high hardness, making it capable of withstanding strong mechanical and thermal shocks, ensuring durability.
- Excellent Light Transmission: BaF₂ lenses exhibit high light transmission in the ultraviolet, visible, and infrared ranges, ensuring optimal optical performance.
- Wide Spectral Range: The lens can transmit a wide range of light, making it adaptable for multiple optical applications.
- High Refractive Index: The high refractive index of BaF₂ allows it to effectively adjust the propagation direction of light, optimizing the performance of optical systems.
- Outstanding Chemical Stability: BaF₂ offers excellent chemical stability, allowing the lens to perform reliably in various environmental conditions for long-term use.
- Coating Treatment: To improve transmission and reduce reflections, the BaF₂ double-concave lens is often coated with anti-reflective films.
Applications
- Low-Temperature Imaging Systems: The BaF₂ double-concave lens is widely used in low-temperature imaging systems, where it effectively expands and collimates beams, enhancing imaging quality.
- Aerospace Optical Systems: Used in optical systems aboard spacecraft, ensuring stable beam transmission and enhancing overall system performance.
- Laser Optical Systems: In laser systems, the BaF₂ double-concave lens is essential for beam expansion, improving the laser output and system efficiency.
- Infrared Optical Systems: In infrared optical systems, BaF₂ lenses are used to adjust beams, collimate light, and project sources, with applications in infrared imaging and detection.
| Optical Property | Value |
| Transmission Range | 0.15-14 μm |
| Transmittance | >94%@0.35nm-10.8μm |
| Refractive Index | 1.462@2.58μm, 1.45@5μm |
| Reflection Loss | 6.8%@2.58μm (both surfaces) |
| 6.5%@5μm (both surfaces) | |
| 5.3%@10.35μm (both surfaces) | |
| Absorption Coefficient | 3.2×10⁻⁴@6μm |
| Structure | Cubic Crystal System |
| Cleavage Planes | <111 |
| Physical Property | Value |
| Density | 4.89 g/cm³ |
| Melting Point | 1386 ℃ |
| Thermal Conductivity | 11.72 W/(m·K) @ 286K |
| Thermal Expansion | 18.1×10⁻⁶/K @ 273K |
| Knoop Hardness | 82 kg/mm² |
| Specific Heat Capacity | 410 J/(kg·K) |
| Dielectric Constant | 7.33 @ 1 MHz |
| Young's Modulus | 53.07 GPa |
| Shear Modulus | 25.4 GPa |
| Bulk Modulus | 56.4 GPa |
| Poisson's Coefficient | 0.343 |
| Chemical Property | Value |
| Solubility | 1.7 g/L @ 20℃ |
| Molecular Weight | 175.3238 g/mol |
| Property | Value |
| Diameter Range | 2-300mm |
| Focal Length | 15-5000mm |
| Thickness | 0.12-60mm |
| Surface Quality | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Flatness | λ/2, λ/4, λ/8, λ/10 |
| Clear Aperture | >90% |
| Coating | Customizable |
