Optical CoatingOptical coating refers to the process of coating a layer (or multiple layers) of metal (or medium) thin film on the surface of optical parts. The purpose of coating the surface of optical parts is to reduce or increase light reflection, beam splitting, color separation, light filtering, polarization and other requirements. Commonly used coating methods include vacuum coating (a type of physical coating) and chemical coating.
In the range of visible light and infrared wavelengths, the reflectivity of most metals can reach 78% to 98%, but not higher than 98%. When it is for CO2 lasers, copper, molybdenum, silicon, germanium, etc. are used to make mirrors, germanium, gallium arsenide, zinc selenide are used as output window and transmission optical element materials, or when it is for YAG lasers, ordinary optical glass is used as mirrors, Output mirror and transmission optical element materials, all cannot meet the requirements of more than 99% of the total reflection mirror. The output mirror has different transmittance requirements in different applications, so optical coating methods must be adopted.
Our company can apply various optical coatings to glass products, including beam splitting film, reflective film, infrared film, laser film, AR film, filter film, ultraviolet film, metal film (gold, silver, aluminum)