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%.
Zinc Selenide Lens is a kind of chemically inert material with high purity, strong adaptability and easy processing. It has low optical transmission loss and good transmittance. With low absorption coefficient and high resistance to thermal shock, it is the preferred material for high-power CO2 laser optical elements.
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.
