Laser, abbreviated as LASER, or laser, refers to the process and instrument of a narrow frequency optical radiation line that generates a collimated, monochromatic, coherent beam through stimulated radiation amplification and necessary feedback resonance. Basically, generating laser requires three elements: "resonant structure", "gain medium" and "excitation source". In the process of R&D and debugging, we sometimes cannot determine the Laser pointer level of a certain part of the product. At this time, we cannot simply assume that its level is the same as the laser source level or a very low level because of the trouble. On the contrary, we generally want Assuming that it is Class 3B or even Class 4, take adequate safety protection measures, such as wearing laser protective glasses, protective gloves, etc., to avoid accidents.
