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Lithium Fluoride Window
  • Lithium Fluoride Window
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Product Details

Lithium fluoride window product

Lithium fluoride (LiF) crystal have good optical transmission properties and can be used as Ultraviolet and Infrared optical window in the spectral range of 0.11 μm~7.5 μm. Especially in deep Ultraviolet(VUV). 

Lithium fluoride (LiF) crystal has excellent scintillation properties and has become an important crystal material in the fields of high-energy physics and other fields.

Physical Properties

Crystal type cubic
Density, g/cm3 2.64
Melting point, °C 870
Refractive index @ 1.0, µm n = 1.387
Transmission band, µm 0.15-6
Lattice constant, Å a = 4.026


Specifications for LiF Windows

Material LiF
Surface quality 60-40 scratch & dig (MIL-PRF-13830B)
Clear aperture 90% of the diameter
Diameter tolerance ±0.02 mm
Thickness tolerance ±0.02 mm
Parallelism ±30 arc seconds
Flatness λ/10 @ 633 nm
Spectral range UV, VIS, IR


We can manufacture optical windows in any optical material required. Please contact us with your specific requirements.


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