Optical PET film is divided into reflective film, anti-reflection film, filter film, optical protective film, polarizing film, beam splitting film and phase film according to application. The first 4 are commonly used. Optical reflective films are used to increase specular reflectivity and are often used to manufacture reflective, refractive and resonant cavity devices. Optical anti-reflection coating is deposited on the surface of optical components to reduce surface reflection and increase optical system transmission, also known as anti-reflection coating

The application of optical PET film is ubiquitous, from the coating of glasses to the liquid crystal display of mobile phones, computers, TVs, and LED lighting, etc., it fills all aspects of our lives and makes our lives more colorful.