Calcium fluoride (CaF2)
ICC-Raman: No fluorescence at 193nm and above under 1W laser, widely used in fluorescence spectrometer.
ICC-E: High internal transmittance, low light energy loss, used in EXCIMER 193/248/355 excimer laser.
ICC-UV: applied to the 200-400nm ultraviolet lens.
ICC-VISIR: applied to the infrared and visible wavelength bands such as 400-10000nm.
ICC-LS: Low-stress and high-uniformity material. The average stress value is less than 2NM and the maximum stress value is less than 15NM. It is widely used in microscope objectives and precision imaging lenses.