The focusing lens of the laser cutting machine is a kind of relatively precise optical element, and its cleanliness directly affects the processing performance and quality of the laser cutting machine. If the lens is improperly selected, it will cause large laser loss, frequent damage to the protective lens, unstable product quality, and serious losses to the enterprise. Although the protective lens of the laser cutting machine is a vulnerable part, in order to improve its utilization rate and reduce production costs, the purpose of reuse can be achieved by regularly cleaning the protective lens. The following is Xinquanli laser sharing and maintenance of laser lenses:

1. The focus lens material is ZnSe (arsenic zinc), which is 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 anti-reflective film on the surface, which is afraid of pollution, moisture, oil and scratching; Therefore, it is required to provide dry and degreased air during work. Never directly handle the lens of the laser cutting machine focus lens by hand, because skin grease will cause damage to the lens surface. On the contrary, you can operate with gloves and 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 focus 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. Generally, it is necessary to check the condition of the focusing lens of the laser cutting machine before and after use and cleaning. Because the size of most pollutants and surface defects is relatively small, we often need to use magnifying equipment when inspecting lenses. In addition to amplification equipment, sometimes we also 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 a laser cutting machine focus lens, clean wiping paper and optical-grade solvent are often used to prevent damage by other pollutants. Wiping paper must be wetted with appropriate solvent, and must not be used dry. In consideration of softness, the available wiping paper is pure cotton wiping paper or cotton ball, lens paper, cotton swab and other applicators.