The advent of new LED lighting system to make street lamps more energy-efficient

Although the city street lamp can illuminate the road, but at the same time it also brings a lot of light pollution and energy waste, but for a long time although the accused but no solution. However, according to the report, there is a group consisting of two words China Taiwan and Mexico researchers have developed a new lighting system, the system through the efficient use of LED, can ensure that the lamp illuminates only need light, without generating unnecessary light.

"A unique feature of this new LED system is that it can adapt to different street street layout, to provide efficient lighting for a variety of streets and roads," participate in the study of science and engineering, National Central University China photoelectric said Professor Sun qingcheng.

The new street lamp system consists of three parts. The first part consists of a string of LEDs, each equipped with a known as total internal reflection (TIR) lens device, its role is to bring together the light, precise control of the direction of the beam of light emitted in parallel without mutual cross.

These lenses are mounted in a reflective cavity, which is used to recover light and to ensure that they can be used more often to illuminate the target. This is the second part of the system. The third part is the outermost layer of the light filtering device, its role is to reduce excess glare. Through this unique structure, researchers can control the shape of the beam, the current design of the beam shape is rectangular, very suitable for road lighting.

The researchers use the light utilization rate (OUF) to quantify the performance of the street lamp, the higher the light utilization ratio, the better the performance of street lamp. The results of computer simulation show that the light utilization ratio of the new street lamp system can reach 51% to 81%, which is far more than that of the ordinary street lamp at present. The results show that this method can be used for more than 45%. In addition, compared with the traditional street lamp, the new street lamp has higher brightness, more energy saving, less glare and light pollution.