We will encounter when using the laser cutting machine lenses pollution problem, pollution is inevitable, we should be how to reduce the longer life of the lens?
Lens caused by uneven heating lead to lens reflex increase in laser wavelength absorption, refractive index changes, the uneven distribution of laser power, laser wavelength from the high absorption of the lens through or reflection lens center high temperature, low temperature edge This said changes in the optical lens effect. Due to pollution caused by the lens of high absorption caused by the thermal lens effect may lead to many problems. The irreversible thermal stress of the lens substrate, the beam propagation through the lens when the power loss, the focus position of the optical partial move, the coating layer of premature failure can cause the lens destruction. Lenses exposed to the air, we do clean up, often do not follow the requirements and precautions on the lens clean-up, casually drawn, the result will cause new pollution or scratch the lens, causing irreparable damage. Concluded that based on years of experience: no matter what kind of optical lens is kept clean is the most important, a good cleaning habits to go carefully cleaning the lens can reduce or eliminate about man-made reasons caused by pollution. Such as fingerprints and saliva flowers. As a common sense, when the hand to operate the optical system, whether cleaning, demolition, installation should be put on the finger or medical gloves should always maintain the requirements and precautions to follow cleaning lenses during the cleaning process, only with the provisions of materials, such as optical lens cleaning paper, cotton swabs, reagent grade ethanol. Any lens cleaning, demolition, installation short cuts will lead to shortened life of the lens, or even permanent damage. Therefore, we have to use common sense to prevent lens contamination of other reasons, in case of anti-humidity, smoke, dust, and so on. Determine a lens contamination, we have to use ear wash ball blowing lens until the surface particles is better, do not mouth to blow. Because blowing the air most of the oil, water, etc. will further contamination of the lenses.







