The quality of laser engraving and cutting mainly depends on the quality of the built-in laser path mirror and focusing lens, as well as the type of coating on the optical components. Generally speaking, the laser is composed of 3 or 4 mirrors, which transmit the laser beam from the laser tube to the working area at a 90 degree angle. The focusing lens built into the laser bracket concentrates the laser beam at the spot on the laser beam. Workspaces.
The special coating on the mirror of the optical system improves the reflectivity of the laser beam. The Chinese laser machine is equipped with an economy class mirror. The coating placed on this mirror will soon burn and fail. The laser power loss rate of the economy class mirror is very high. Due to this economy, the laser beam loses a significant amount of laser power before converging into the working area. The percentage of laser power loss in the optical path reaches 20-50%.
Focusing lenses are the main component of laser optical systems. The focusing lens is made of Zinc selenide, which has the highest laser beam transmittance. The special coating or coating on the focusing lens minimizes the refractive index of the laser beam on the surface of the lens and increases the ability of the laser beam to pass through the lens. The installation of economic grade focusing lenses on domestic laser machines results in distortion of the laser beam, significant loss of laser power in the working area, and poor quality of laser engraving and cutting.