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Barium Fluoride Lenses

  • Introduction

Barium fluoride (BaF2) crystal

Barium fluoride (BaF2 lens) crystal belongs to cubic crystal system with outstanding moisture resistance, melting point of 1280℃, which allows BaF2 components work under extreme high temperature, refractive index varies slightly in a broad wavelength range, wide transmission range, with great transmission 90% from 0.2 μm to 10 μm spectrum range.

With its stable optical properties and good mechanical properties, BaF2 is also considered as a suitable material for SWIR lens component manufacturing. In addition, BaF2 crystal has good scintillation properties (the crystal can simultaneously measure the energy spectrum and time spectrum, with high resolution), has a broad application prospect in high energy physics, nuclear physics and nuclear medicine.

Hyperion Optics provides various off-the-shelf BaF2 stock, diameter ranges from 10mm up to 39mm. Also we take custom specs. Please talk to our technicians today and find out what we can help you with.

Barium fluoride (BaF2) coating reflectanceBarium fluoride (BaF2)

Barium Fluoride




Diameter Tolerance(mm)




Center Thickness(mm)




Parallelism (Arc min)





100 - 80

40 - 20

10 - 5

Figure Tolerance inλ(Pow/irreg)

2.5 - 1.5

2 - 1


Coating (T% avg)

Depends on Different Working Wavelength


Barium Fluoride

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