When the incident light is in the conduction process of the Led Flat Panel Ceiling Lights, if the astigmatism point is encountered, the diffuse reflection light of each angle is formed, and the propagation of the light energy varies with the length of the light guide plate, so that the uniformity of the emitted light and the efficiency of the light output are ensured. It will increase with the length of the light guide plate, as shown in Figure 2 below. The intensity of the diffuse light is proportional to the intensity of the incident light at that location and is proportional to the area of the scattering point. Therefore, during the incident light propagation, the intensity of the incident light is gradually weakened due to the diffuse reflection. Therefore, in order to ensure uniform light emission on both sides of the light guide plate, the diameter of the scattering point near the end of the light source is smaller, and the diameter at the other end is smaller. Be bigger. There are many ways to change the light extraction efficiency: you can change the density of the light spot on the light guide, the size of the dot, and the spacing of the dots. The specific dot distribution on the bottom surface of the light guide plate is related to the actual light distribution curve of the LED, and is also related to the specific size of the backlight panel. The key to the design is to find a reasonable dot distribution to obtain a uniform brightness distribution.
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