Working principle of LED light guide plate

The reflection points close to the light sources located on both sides of the light guide plate are small and rounded and spaced apart, while the reflection points located in the middle part of the light guide plate are dense and roughly elliptical. When the light enters the light guide plate from the light sources on both sides and hits the reflection point, it is diffusely reflected to the surface of the light guide plate: the other part is that the light directly penetrates the light guide plate and reaches the surface. The closer the light guide plate to the light source is, the stronger the direct light, and the weaker the farther away; on the other hand, the reflection points close to the light source are small and distant, and the diffusely reflected light is less, on the contrary, those far away from the light source are thick and dense The light reflected from the point is more abundant. After the complex fusion of these lights, the effect of uniform brightness of the entire light guide plate is achieved.