BaF2 Lenses

Barium Fluoride or BaF2 crystals could be used in the ultraviolet, visible and infrared spectral regions. BaF2 has a good transmission above 90% between 0.25 and 9.5µm. Barium Fluoride is half as hard as Calcium Fluoride and also more susceptible to thermal shock. However, it is commonly used in cryogenically cooled thermal imaging systems, Hangzhou Shalom EO offer the BaF2 lenses used in MWIR (3-5 micro) thermal imaging applications.