Difference between light guide plate and diffusion plate in LED panel lamp
The information comes from:Internet Posted on:2021-06-08
First of all, the materials are different. The light guide plate is mostly PMMA, and the diffusion plate is mostly PC. Secondly, the function of the light guide plate is different. The purpose of the light guide plate is to guide the light source to spread evenly to the whole panel, mainly to control the layout and composition of the light source more efficiently; The diffusion plate is mainly used to disperse the light flux and protect the optical material from damage.
It can also be said that the diffusion plate is added to the light guide plate to make the luminous effect better.
PMMA material is much more expensive than PC material because of its good optical performance and better light transmission performance. The diffusion plate made of PC material mainly disperses the light and evenly distributes it on the panel. Of course, PC material also has advantages, that is, PC material is more moisture resistant than PMMA material, and PMMA material absorbs water and is easy to deform.
