CaF2 Lenses

Due to its high average transmission and low chromatic aberration relative to other IR materials, calcium fluoride (or CaF2 ) is an excellent choice for windows and lenses for spectroscopy applications in the deep UV to near IR wavelength range (180 nm-8 µm). For its good transmission properties at MWIR range, the CaF2 are often selected as the lenses for MWIR (3-5 micro)thermal imaging applications.