In modern society, technical equipment such as imaging, laser, infrared, etc. have been widely used. These equipments all need to use optical glass to achieve their functions. In order to improve the performance of modern optical lenses, there are multiple layers of films made of polymer materials on the surface of the lens.
This layer of synthetic material provides rich nutrients for the growth and reproduction of molds. Molds grow and reproduce on the surface of the optical lens by decomposing the components of the film, and the mycelium spreads on the surface of the lens in a dendritic shape, which deteriorates the light transmission and imaging performance of the lens, until the mycelium covers the entire lens.
Molds can also use the inorganic salts in the vitreous of the lens to provide nutrients, so the mycelium also erodes longitudinally into the vitreous and penetrates and develops.
Optical lenses are generally composed of multiple lenses. Mold mycelium not only grows on the surface of the lens, but also spreads to the back of the lens through the edge of the lens, so that mold grows on both sides of the lens and cannot be removed.
Moreover, the mold spreads and spreads and shoots spores among multiple lenses, making the optical lens useless and irretrievable, resulting in scrap.
Nowadays, many optical lenses and precision instruments require high temperature and humidity requirements. This problem has been solved, that is, the use of dehumidifiers is reasonable and economical; it has also been widely used in various industries.
In the early stage of the propagation of mold on the lens surface, it is not easy to observe with the naked eye. When it can be seen with the naked eye, it has generally caused certain damage. If it is found in time, the surface of the lens can be cleaned with potion. If it is later, the mycelium has cut into the vitreous body of the lens. Even if it is cleaned, the damage caused by the cut can no longer be repaired.
For the lens that has invaded the back of the lens, although the optical lens can be disassembled for cleaning, the damage caused is still irreparable, and the optical lens has been precisely adjusted at the factory.
Generally, the repair shop has no technical conditions, and the performance of the lens that is disassembled and then reinstalled will be affected, and the cleaning cost of the lens is expensive. Taking the camera lens as an example, the cleaning cost is sometimes as high as 30% of the purchase cost of the lens itself.
In addition, if the cleaning is not thorough, it is not easy to find at the time, and it will recur in the future. To ensure the safety of the optical lens, the lens should be stored in an environment with a relative humidity of about 40%.
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