Explanation

It is a kind of optical coating deposited on the surface of metal or other soft and erodible materials or films to increase their firmness and stability and improve their optical properties. The most commonly used is a metal protective film. It can protect the metal mirror surface from external erosion and reduce quality, while also increasing the mechanical strength of the mirror surface. Common metal mirror protective film materials include SiO% 8 12 ():materials or film optically to improve its optical properties. The protective film of optical storage materials can not only isolate the air and matrix materials from the erosion of storage materials, but also improve the stability and life of optical disks? And through matching design, its writing sensitivity and carrier to noise ratio are improved. dielectric protective films are not only used for metals and semiconductors, but also for the dielectric film itself. The protective film in laser thin films can be used to improve the laser resistance of the film.

Classification