new material
Lithium fluoride window plate with a circular aperture is a high-performance optical component known 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
The Lithium Fluoride circular aperture window plate is a commonly used optical component, primarily designed to protect the internal components of optical instruments and isolate the internal system from the external environment. Lithium Fluoride exhibits excellent optical properties, particularly in the vacuum ultraviolet and visible to infrared wavelength ranges, providing high transmission. Its excellent chemical and thermal stability makes it ideal for complex optical systems, especially for high-precision instruments.
Key Features
- Wide Transmission Range: Lithium Fluoride has excellent transmission from vacuum ultraviolet to infrared wavelengths, making it suitable for various spectral applications.
- Superior Optical Performance: It offers high transmission and low absorption in the visible and infrared regions, ensuring high efficiency of optical systems.
- Chemical Stability: With strong chemical stability, Lithium Fluoride performs reliably in diverse environmental conditions without corrosion.
- Thermal Stability: Lithium Fluoride maintains excellent optical properties even under high-temperature conditions, ensuring stable performance.
- Uniformity and Stability: The crystal structure of Lithium Fluoride provides excellent optical uniformity and stability, making it ideal for manufacturing high-quality optical components.
Applications
- Optical Instrument Manufacturing: Widely used as a protective window in high-precision optical instruments, such as telescopes and microscopes, ensuring stable internal optical performance.
- Laser Systems: Used in laser systems as a window plate, offering reliable protection and maintaining system stability.
- Infrared Spectrometers: In infrared spectrometers, Lithium Fluoride window plates provide stable spectral transmission, improving optical system precision.
- High-Energy Physics Experiments: Due to its superior transmission properties, Lithium Fluoride is ideal for applications in the vacuum ultraviolet range, such as in lasers, light sources, and detector systems.
| 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 |
| 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 |
