Lithium Fluoride – LiF
lenses, windows, mirrors, filters and prisms
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|
|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)|
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