Lithium fluoride plano-concave lens is a high-performance optical component designed for superior ultraviolet and infrared transmission, excellent thermal stability, and precise beam divergence control. Manufactured from high-purity LiF, it offers outstanding optical clarity, minimal distortion, and resistance to environmental degradation. This lens is widely used in laser systems, spectroscopy, aerospace applications, and precision scientific instruments, ensuring optimal optical performance for advanced imaging and beam-shaping applications.
Product Overview
The lithium fluoride plano-concave lens is a high-performance optical element made from lithium fluoride crystal, featuring a plano-concave shape (one flat surface and one concave spherical surface). This lens is designed to introduce negative spherical aberration, commonly used for beam expansion, focal length extension, and optical system aberration correction. Due to its excellent optical properties, the lithium fluoride plano-concave lens provides good transmission and reflection in the ultraviolet, visible, and infrared bands, making it highly applicable in high-standard optical systems. The high hardness and excellent optical performance of lithium fluoride make this lens suitable for high-precision imaging systems such as microscopes, telescopes, and cameras.
Key Features
- High Optical Transparency: The lithium fluoride plano-concave lens offers excellent light transmission across the ultraviolet, visible, and infrared spectra, ensuring efficient light passage with minimal optical loss.
- Negative Spherical Aberration: The plano-concave design generates negative spherical aberration, which helps focus light and increase the focal length, commonly used for beam expansion and improving optical system imaging precision.
- Outstanding Optical Performance: Lithium fluoride provides lower reflectivity and higher transmission efficiency, ensuring the high-performance operation of optical systems.
- High Surface Quality: The lens surface is manufactured to achieve λ/4 surface accuracy to ensure excellent imaging quality.
- Precision Manufacturing: The lens is processed with high-precision machining and polishing to maintain accurate shape and dimension.
- High Temperature Resistance and Hardness: Lithium fluoride material possesses good hardness and heat resistance, making it suitable for high-temperature environments and high-power optical applications.
Applications
- Microscopes and Telescopes: Enhances imaging precision and focal length control, improving the performance of optical systems.
- Optical Instruments: Widely used in high-precision optical instruments such as cameras, projectors, etc., for beam expansion and focal length adjustment.
- Laser Systems: Utilized in laser systems for collimating and expanding beams, enhancing optical transmission efficiency.
- Scientific and Engineering Applications: Suitable for high-precision scientific experiments and engineering applications, providing high-quality imaging and beam control.
Optical Property | Value |
Transmission Range | 0.11-7 μm |
Transmittance | >94.8%@0.6μm |
Reflection Loss | 5.2%@0.6μm (both surfaces) |
Absorption Coefficient | 5.9×10⁻³@4.3μm |
Structure | Cubic Crystal System |
Cleavage Planes | <100 |
Physical Property | Value |
Density | 2.639 g/cm³ |
Melting Point | 848 ℃ |
Thermal Conductivity | 11.3 W/(m·K) @ 314K |
Thermal Expansion | 37.0×10⁻⁶/K @ 283K |
Knoop Hardness | 415 kg/mm² |
Specific Heat Capacity | 1562 J/(kg·K) |
Dielectric Constant | 7.33 @ 1 MHz |
Young's Modulus | 64.79 GPa |
Shear Modulus | 55.14 GPa |
Bulk Modulus | 62.03 GPa |
Poisson's Coefficient | 0.22 |
Chemical Property | Value |
Solubility | 2.7 g/L @ 20℃ |
Molecular Weight | 25.9394 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 |