How to buy one of the protective lenses of the laser cutting machine: the outline size is matched, which is easy to understand;
How to buy the second protective lens of laser cutting machine: material. According to different laser power and considering the use cost, K9 and quartz can be selected. In the process of practical application, professional manufacturers divide these two types of materials into multiple grades, and customers can choose corresponding specifications according to actual needs
How to buy laser cutting machine protective lens 3: coating, laser antireflection film, different coating technical parameters according to the use environment.
Although the protective lens of the laser cutting machine is a vulnerable part, in order to improve its utilization rate and reduce the production cost, the protective lens can be cleaned regularly to achieve the purpose of reuse. There are three specific cleaning steps below:
1. The protective lens material is ZnSe (arsenic zinc oxide), which is relatively brittle and afraid of falling; Attention shall be paid during disassembly and assembly: do not use too much force and do not collide with hard objects. There is a 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 the work. Do not directly handle the lens of the laser cutting machine to protect the lens, because the skin grease will cause permanent damage to the lens surface. On the contrary, you can operate with gloves and special kits. For smaller lenses, it is more convenient to use optical tweezers or vacuum tweezers. No matter what method is used to clamp the protective lens of the laser cutting machine, it can only be clamped along the non optical surface, such as the frosted edge of the mirror plaque.
2. In general, it is necessary to check the protective lens of the laser cutting machine before use and before and after cleaning. Because most of the pollutants and surface defects are small in size, we often need to use magnifying equipment when inspecting 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 the surface pollutants and defects, so that the pollutants and defects can be found more easily.
3. When cleaning the protective lens of a laser cutting machine, always use clean wiping paper and optical grade solvent to prevent it from being damaged 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.