The lens of the laser marking machine is made of arsenic zincate. It is inevitable that dust and slag splash will damage the focusing lens in the process of use, and the lens plays a very important role in the work of the laser marking machine. Once the lens is damaged, it will lead to inaccurate accuracy. Therefore, how to protect the lens of laser marking machine is very important.
1.The protective lens material is ZnSe (zinc arsenide), which is brittle and afraid of falling; Attention shall be paid during disassembly and assembly: do not use too much force or collide with hard objects. There is antireflective film on the surface, which is afraid of pollution, moisture, oil and scratch; Therefore, it is required to provide dry and degreased air during work. Never directly handle the lens of the laser marking machine to protect the lens by hand, because skin grease will cause permanent damage to the lens surface. On the contrary, you can operate with gloves and their special sets. For smaller lenses, it will be more convenient to use optical tweezers or vacuum tweezers. No matter what method is used to clamp the protective lens of the laser marking machine, it can only be clamped along the non-optical surface, such as the frosted edge of the plaque edge.
2.Generally, the protective lens of the laser marking machine needs to be checked before use and before and after cleaning. Because the size of most pollutants and surface defects is relatively small, we often need to use amplification equipment when checking lenses. In addition to the amplification equipment, sometimes we need to irradiate the optical surface with a relatively bright light to enhance the specular reflection intensity of surface pollutants and defects, so that pollutants and defects can be found more easily.
3.When cleaning the protective lens of a laser marking machine, always use clean wiping paper and optical grade solvent to prevent damage by other pollutants. The wiping paper must be wetted with a suitable solvent and must not be dried. In consideration of softness, the available wiping paper is pure cotton webril wiping paper or cotton ball, lens paper, cotton swab and other applicators.
