What is Optical Coating?
Optical coating is the process of plating one (or more) metal (or dielectric) film on the surface of optical parts. The purpose of coating on the surface of optical parts is to achieve to reduce or increase the light reflection, beam splitting, color separation, filtering, polarization and other requirements. Commonly used coating methods are vacuum coating (a kind of physical coating) and chemical coating. With physical or chemical methods on the surface of the material coated with a transparent electrolyte film, or plating a...