Optical beam combiner

Beam combiners are partial reflectors that combine two or more wavelengths of light -- one in transmission and one in reflection -- onto a single beam path. Since the 10.6 micron laser is invisible, in the actual process of laser marking, we often need to know where the focus of the laser is, so as to determine if the position of marking is correct or not. By the beam combiner, we combine the red light of the visible 650nm emitted by the diode with the 10.6 micron laser into one beam of light, so that where the 650nm red light is pointing is the position of 10.6 micron laser, thus achieving the purpose of using the red light of 650nm to indicate the 10.6 micron laser Surface1: T>99%@10.6um,45AOI Surface 2: T>99%@10.6um R>85%@650nm,45AOI