Light utilization rate of 92%, a new type of LED lamp shade

General LED lampshade, light utilization rate is only about 70%, but professor at Centre College in Taipei, a new type of LED lamp, the utilization rate of light can reach up to 92%, not only will not waste energy, but also can reduce light pollution.

Sun Qingcheng, Professor of the Department of Optics and electronics, Centre College, said: "general diffusion film is a light, scattered into a long strip of direction. "In order to reduce light pollution, so that the light utilization rate is better, Professor Sun made a step in the global design, general LED lamp shade is using the scattering diffusion sheet when the light from above when irradiated, about 70% of the light fell, but there will be about 30% of the light to the sky scattered out, caused by light pollution, and the brightness is not on the ground.

Micro structure can control the light diffusion sheet through the refractive index and angle, let the light be evenly distributed, the light utilization rate is higher than 92%, like Centre College badminton hall lighting through the design, the light will fall on the ground, not toward the ceiling light. Sun Qingcheng, Professor of the Department of Optics and electronics, Centre College, said: "it is the whole light, the whole light means that you can let the light I want to let it shine in the direction of the light, you can freely control. "

Lighting greatly affected the development of human beings, but also bring the serious light pollution in the city, which was almost hard to see the night sky of stars. Centre College professor Sun Qingcheng: "light photoelectric traditional lamp is too big, so ordinary lampshade is difficult to shield light well, making it exposed, so it has a lot of light is taken into the sky. "When the light is able to focus on the need for lighting, and reduce the occurrence of light damage, play the real function of lighting, in order to illuminate the way home, but also the earth a clean sky.

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