Lens of the laser wavelength absorption increase will cause uneven heating leads to reflection of the lens, the refractive index changes when the laser wavelength transmitted or reflected from a high absorption of the laser power distribution of the lens so that the lens center high temperature non-uniformity, edge temperature is low, This change produces a lens effect, said optically. Due to the high absorption of lead pollution caused by the lens thermal lensing produces many problems. Lens substrate irreversible thermal stress, when the beam propagation power loss generated by the lens, the focusing spot position of partial movement, the plated layer and so can lead to premature failure of the destruction of the lens. For lenses exposed to the air, when we do the clean-up, clean-up lenses often do not follow the requirements and considerations, casually drawn, the results will cause new pollution even scratch the lens, causing irreparable damage. So based on years of experience that: no matter what kind of optical lenses clean is the most important, a good cleaning habits to carefully clean the lens laser marking card, you can reduce or eliminate the reasons related to pollution caused by man-made. Such as fingerprints and saliva flowers. As a common sense when operating a hand to the optical system, regardless of the cleaning, demolition, installation should bring finger or medical gloves, to always keep the lenses clean follow the requirements and precautions laser marking machine laser gathered today small and Houjie you on a laser marking card maintenance, relatively low-level knowledge, when "Laser gathered galvanometer should be completed before or after it." In fact, we usually use the laser marking machine or laser coders will not come into contact with knowledge, because this thing is only laser marking machine production personnel will be exposed to. Xiao Bian here just for everyone to just under science laser marking card dongle, you know it's going on the trip. Explain: only from the optical principle analysis, the focus should be after galvanometer, because then if before galvanometer, had the focus, the light is divergent light is not focused on the German laser marking card agent price, marking the effect is certainly not good . Also, if the focus falls on the galvanometer, then the film will galvanometer because the light intensity is too easy to be damaged, logically speaking, the focus falls on the target location is best. In addition there is a special request galvanometer: galvanometer special requirements and the wavelength, 1064 nm band if it is solid-state lasers, it is primarily higher reflectivity coatings, damage threshold must be high, easy to keep clean environment these. Dongguan laser marking card repair prices, laser marking card, a small family of laser provided by Dongguan Laser Equipment Co., a small family. Dongguan City, a small family Laser Equipment Co. (www.laser6000.com) strong, credible, in Dongguan, Guangdong and other welding equipment and equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead a small family of laser and you hand into the brilliant, for a better future!