Lithium Fluoride - LiF
lenses, windows, mirrors, filters and prisms
Click here to download PDF version of this page.This material is used for the maufacture of optical windows, lenses, prisms, x-ray monochromator plates, and refracting components in the vacuum ultraviolet, visible and infrared. Lithium Fluoride is attacked by atmospheric moisture and is sensitive to thermal shock.
| Transmission Range | 0.11 - 9.0 µ |
| Crystal Structure | Rock Salt |
| Cleavage Plane | 100 |
| Colour | colourless |
| Density | 2.639 (25°) |
| Melting Point (°) | 848 |
| Reflection Loss | 4.4% (4µ) for 2 surfaces |
| Solubility index | 0.27gm/100gm water 20°C |
| Hardness (Knoop) | 102 - 113 |
| Thermal Conductivity (cal/cm sec°C) | 2.7x10-2 (41°C) |
| Thermal Expansion coefficient (/°C) | 37x10-6(0-100°C) |
Whilst every effort has been made to verify the data provided, no responsibility can be accepted for its accuracy