Optical grade Czochralski silicon (OCZ-Si) as a transmission grade material is widely used in the mid-infrared (3-5um) band, and the infrared transmittance exceeds 50%.
ZnSe lenses are precision optical components commonly used in thermal imaging, high power CO 2 laser systems and life sciences.
Sapphire material has good light transmission performance. Therefore, lens products made of sapphire material have a longer service life and a wide range of adaptive spectra. Compared with optical glass, they have obvious advantages.
Calcium fluoride (CaF2) has a high transmittance from ultraviolet to mid infrared (250nm~7um), so it is widely used to manufacture prisms, windows and lenses.