The horizontal laser engraved chapter machine lens is composed of 3 pieces of mirror and 1 pieces of focus lens. The mirror is usually 20mm in diameter, and the focusing lens is divided into two kinds: diameter 12mm and 18mm.
Lenses have pollution or scratches will directly lead to the depth of the engraving is not enough, the effect of the decrease!
For exposure to the air in the lens, we do cleaning, often do not follow the requirements of the lens cleaning and attention matters, literally drawn, the results will cause new pollution and even scratch the lens, causing irreparable damage.
Therefore, we in the process of cleaning, to use common sense to prevent the lens from other causes of pollution, with the provisions of the material, such as the use of optical polishing mirror paper, cotton swab, reagent grade ethanol. In determining the pollution of a lens, we want to use the washing ear ball lens, until the surface no particles is better, do not use the mouth to blow. Because most of the air blowing air, water, etc. will further pollute the lens. If after washing ear ball handling its surface is still contaminated, we must use a special cotton swab dipped in laboratory grade acetone, ethanol to gently wipe. So you can remove most of the pollution thin layer.
Generally speaking, the lens is replaced once a year. But if we can keep the lens clean, it will be an extension of the service life of the machine.