As the name implies, the protective lens is used to prevent dust and slag splashing to damage the focusing lens. In addition to being used in fiber laser machines, it is also necessary in other laser equipment. There are many kinds of consumable parts for laser cutting machines. Today, I will mainly introduce the protective lens in the laser cutting machine.
Ⅰ.Function of Laser Cutting Machine Lens
The main function of the protective lens is to prevent dust and slag splashing from damaging the focusing lens. This lens is not only used in fiber laser machines, but also widely used in other laser equipment, including laser marking, laser welding and laser engraving. It can be seen that the application market for protective lenses is very large.
Ⅱ.Importance of Choosing Lenses
The prices of protective lenses on the market vary, ranging from tens of yuan to hundreds of yuan, and the quality is also different. Of course, the phenomenon of selling inferior products as good ones is also common. If the lens is not selected properly, it will cause large laser loss, frequent damage to the protective lens, and unstable product quality, which will cause serious losses to the company. Therefore, choosing a suitable protective lens is a very important thing.
Ⅲ.Three Steps to Choose the Protective Lens of Laser Cutting Machine
1. Matching the appearance size:
This is the most basic requirement. It is necessary to ensure that the size of the lens is consistent with the specifications of the equipment.
2. Material selection:
Depending on the laser power and cost of use, you can choose K9 glass or quartz material. Professional manufacturers will divide these two types of materials into multiple grades, and customers can choose the corresponding specifications according to actual needs.
3. Coating technology:
The choice of laser anti-reflection film needs to be determined according to the use environment. Different coating technology parameters can greatly affect the performance and life of the lens.
Ⅳ.Steps to Clean the Lens:
1.Precautions for disassembly and assembly of protective lenses:
The protective lens material is ZnSe (zinc arsenic), which is relatively brittle and afraid of falling. Be careful not to use too much force during disassembly and assembly, and do not collide with hard objects. There is an anti-reflection film on the surface, which is afraid of pollution, moisture, oiliness, and scratches. Therefore, dry and degreased air should be provided during work. Never touch the lens directly with your hands, because skin oils will cause permanent damage to the surface of the lens. It is recommended to use gloves and special sets for operation. 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 part of the edge of the lens.
2.Inspection before and after use:
The condition of the lens needs to checked before use and before and after cleaning. Most contaminants and surface defects are small in size, so a magnifying device needed when inspecting the lens. In addition to the magnifying device, sometimes a brighter light needed to illuminate the optical surface to enhance the mirror reflection intensity of contaminants and defects, which makes it easier to find problems.
3.Cleaning method:
When cleaning the protective lens of the laser cutting machine, clean wiping paper and optical grade solvents often used to prevent damage by other contaminants. The wiping paper must moistened with a suitable solvent and must not used dry. For softness considerations, pure cotton Webril wiping paper, cotton balls, lens paper and cotton swabs can used.
Final Thoughts
In short, the role of protective lenses in laser equipment cannot underestimated. Choosing suitable protective lenses and paying attention to maintenance and cleaning during use can effectively extend their service life and ensure the normal operation of the equipment. Through scientific and reasonable management, enterprises can reduce production costs and improve product quality, thereby occupying a favorable position in the fierce market competition. I hope the above content can help everyone in choosing and using protective lenses.