Although the protective lens of God – painted laser cutting machine belongs to wearing parts, 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. Here are the three cleaning steps summarized by high-energy laser.
1. The protective lens material is ZnSe ( arsenic zincate ), which is brittle and afraid of falling. Attention should be paid when disassembling and assembling: Do not exert too much force and do not collide with hard objects. There is an antireflection film on the surface, which is afraid of pollution, moisture, oil and scratches. Therefore, it is required to provide dry and degreased air at work. Never handle the laser cutting machine directly to protect the lens, because skin grease will cause permanent damage to the lens surface. On the contrary, you can operate with gloves and their special sleeves. 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 cutting machine, it can only be clamped along non-optical surfaces, such as the frosted edge of the edge of the mirror plaque.
2. Under normal circumstances, it is necessary to check the protection of lens by laser cutting machine before use and before and after cleaning. Because most contaminants and surface defects are small in size, we often need magnification equipment when inspecting lenses. In addition to amplification equipment, sometimes we need to irradiate the optical surface with a relatively bright light to enhance the specular reflection intensity of surface contaminants and defects, so that contaminants and defects can be more easily found.
3. When cleaning a laser cutting machine to protect lenses, clean wiping paper and optical grade solvents are often used to prevent damage by other pollutants. Wipe paper must be wetted with a suitable solvent and must not be used dry. Considering the softness, the available wiping paper is pure cotton web RIL wiping paper or cotton ball, lens paper, cotton swab and other applicators.