Light utilization rate of 92%, new LED lampshade reduces light damage
Sun Qingcheng, a professor at the Department of Optoelectronics at the Central University, said: "The general diffusion film is to split a light into a long strip." In order to reduce the light damage and make the light more efficient, Professor Sun made a unique global design. Generally, the lampshade of the LED lamp uses a bulk scattering diffuser. When the light is irradiated from above, about 70% of the light is directed downward, but about 30% of the light is scattered to the sky, causing light damage. The brightness on the ground is not enough. In addition to controlling the refractive index and angle of the light, the microstructured diffuser can evenly distribute the light, and the utilization rate of the light is more than 92%. Just like the lighting of the Central University Badminton Hall is designed, the light will only be It falls on the ground and does not shine in the direction of the ceiling. Sun Qingcheng, professor of optoelectronics at the Central University: "It is the whole light. The whole light means that the light can be directed to the direction I want it to shine, and it can be controlled freely."
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The light source of a traditional lamp is too large, so it is difficult for an ordinary lampshade to shield the light source so well that it is bare outside, so it has a lot of light shining into the sky. When the light can be concentrated in the place where it needs to be illuminated, and the occurrence of light damage is reduced, the real function of the illumination can be exerted to illuminate the road home and a clean sky. 