Laser cutter focus lens cleaning and selection
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The focusing lens of a laser cutting machine is the only lens that contacts the processing surface when the cutting machine is working. During cutting, dust and slag are affected, and dust easily adheres to the focusing lens. When the mirror is dirty, the light transmittance of the focusing lens becomes lower and the endothermic property becomes higher. If the cleaning work is not done well, the lens can easily burst. Keeping the lenses clean can keep the transmittance of the lenses at a high standard. If the optical lenses are contaminated or contaminated with dust, the transmittance of the lenses will continue to decrease, causing the lens to become hot and deformed, thus reducing the quality of laser cutting. Seriously, it may not be usable, and it will damage the machine.
Focusing lenses are generally convex structures, the role of the laser beam emitted by the laser focused on a small point. What are the selection techniques for focusing lenses in laser cutting machines? For a lens with a longer focal length than a lens with a shorter focal length, a lens with a longer focal length can obtain a relatively deep and large focal point, so the lens with the proper focal length should be selected according to the actual application needs. The smaller the size of the focusing lens, the smaller the diameter of the focused spot, the more concentrated the laser power, but the thinner the material that can be processed. The larger the size of the focusing lens, the greater the size of the material that can be machined.
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