The Basic Principle Of Vacuum Coating And Optical Coating
Jun 25, 2021| The basic principle of vacuum coating and optical coating
1, vacuum coating is an important aspect of the field of vacuum application, it is based on the vacuum technology, the use of physical or chemical methods, and absorb electron beam, molecular beam, ion beam, isolation beam, radiofrequency and magnetic control and a series of new technology, for scientific research and practical production to provide a new technology of thin-film preparation. Simply, the evaporation or sputtering of metals, alloys, or compounds in a vacuum to solidify and deposit them on the coated object (called substrate, substrate, or matrix).
2. Light interference is widely used in thin-film optics. The common method of optical thin-film technology is to coat thin film on glass substrate by vacuum sputtering, which is generally used to control the reflectivity and transmittance of the substrate to the incident beam to meet different needs. In order to eliminate the reflection loss on the surface of optical parts and improve the imaging quality, a layer or multiple layers of the transparent medium film is coated, which is called anti-reflection film or anti-reflection film.
With the development of laser technology, there are different requirements for the reflectivity and transmittance of the film, which promote the development of multi-layer high reflection film and broadband anti-reflection film. For various applications, polarized reflective film, color dispersive film, cold light film, and interference filter are made of high reflective film. After the surface of optical parts is coated, the light is reflected and transmitted many times on the film layer, forming multi-beam interference, controlling the refractive index and thickness of the film layer, and obtaining different intensity distribution, which is the basic principle of interference coating.
IKS PVD company, decorative coating machine, tools coating machine, optical coating machine, PVD vacuum coating line, the turn-key project is available. Contact us now, E-mail: iks.pvd@foxmail.com