new material
Lithium fluoride circular window is a high-performance optical component recognized for its exceptional ultraviolet and infrared transmission, superior chemical stability, and minimal optical distortion. Manufactured from high-purity LiF, it offers outstanding optical clarity, low refractive index, and excellent durability, making it an essential material for laser optics, spectroscopy, aerospace applications, and precision scientific instruments. Its resistance to moisture and environmental degradation ensures reliable performance in advanced optical systems.
Product Overview
Lithium fluoride circular windows are commonly used optical elements made from lithium fluoride crystals, offering excellent optical performance. They exhibit high transmission and low absorption in both ultraviolet and infrared wavelengths, making them ideal for systems requiring precise optical measurement and protective functions. Lithium fluoride is an inorganic compound with a high refractive index and chemical stability, allowing these windows to provide accurate light propagation and reflection, effectively isolating the internal components of the optical system from external environmental influences.
Key Features
- High Transparency: Exceptional transmission in both ultraviolet and infrared wavelengths, suitable for various optical applications.
- Chemical Stability: Lithium fluoride offers excellent chemical stability, effectively resisting corrosion and high temperatures, making it suitable for harsh environments.
- High Refractive Index: Ensures precise light propagation, maintaining the stability and efficiency of optical systems.
- Surface Quality: After fine processing and polishing, the windows are ensured to have excellent surface quality and optical performance.
- Protective Function: Effectively isolates the internal components of optical systems from the external environment, protecting optical elements from contamination and mechanical damage.
Applications
- Optical Instruments: Used as protective windows or mirrors in high-precision optical instruments, providing optical control and protection.
- Laser Systems: Serves as a protective window for lasers, ensuring the stability and efficiency of laser systems.
- Spectral Analysis: Suitable for spectrometers, assisting in precise light measurement and reflection.
- Optical Sensors: Widely used in optical sensor systems, protecting sensors from environmental contamination and mechanical damage.
- High-Precision Optical Systems: Used in various high-precision optical systems, providing optical control, transmission, and reflection functions.
| Optical Properties | Value |
| Transmission Range | 0.11-7μm |
| Transmittance | >94.8% @ 0.6μm |
| Reflection Loss | 5.2% @ 0.6μm (both surfaces) |
| Absorption Coefficient | 5.9×10<sup>-3</sup> @ 4.3μm |
| Structure | Cubic Crystal System |
| Cleavage Planes | <100> |
| Physical Properties | Value |
| Density | 2.639 g/cm<sup>3</sup> |
| Melting Point | 848 ℃ |
| Thermal Conductivity | 11.3 W/(m×K) @ 314K |
| Thermal Expansion | 37.0 × 10<sup>-6</sup>/K @ 283K |
| Knoop Hardness | 415 kg/mm<sup>2</sup> |
| Specific Heat | 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 Ratio | 0.22 |
| Chemical Properties | Value |
| Solubility | 2.7g @ 20℃ |
| Molecular Weight | 25.9394 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 |
