Diffusion film products refer to the precision coating method on the PET substrate to cure the optical glue into a pre-designed optical structure diffusion coating, so that the light will diffuse through the diffusion coating, and the light distribution will be uniform. New high-performance optical materials that uniformly convert point light sources or line light sources into surface light sources.
At present, it is mainly used in the backlight light source part of the LCD module. As an important measurement parameter, the transmittance of the diffuser film needs to be measured with the diffuser film transmittance meter LS117.