Optical coating index – absorption attenuation
1. What is the absorption loss of the film? Absorption loss is caused by electrical energy, electro-magnetic energy or acoustic energy being dissipated or converted into other forms of energy by interaction with the material medium. In the film, part of the light energy is converted into heat and dissipated. 2. What types of absorption losses are there? The absorption loss of the film layer is divided into two forms: Inherent absorption loss and External absorption. 2.1 Inherent absorption loss Inherent loss is the absorption of light energy by the material itself. Each material has its absorption band corresponding to …