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On November 28th, the "Liaoyuan High Power LED Street Light Promotion Conference" was held at the Ramada Plaza Hotel in Guangzhou. The conference was jointly organized by renowned LED chip manufacturer Cree and Ningbo Liaoyuan Lighting Co., Ltd. The meeting invited leaders from various streetlights in Guangdong, some LED companies in Guangzhou, high-tech LEDs and other government and industry organizations. The top executives of Cree and Ebara were also present.
On the night before the meeting, the leaders of Liaoyuan Lighting led the guests to visit the LED streetlight project of the company in Guangzhou Avenue South. These lamps use Corti or Crystal's LED chips, and the lighting effect is in stark contrast to the high-pressure sodium lamps next to them. Under the LED street light of Ebara, the road surface has uniform illumination, no glare, and good visibility. Chen Haijun, director of the Institute of Optoelectronics, told reporters that the luminous efficacy of these street lamps is greater than 90 lm/W, the color rendering index is greater than 70, the overall luminous efficacy of the lamps is 65 lm/W, and the brightness uniformity is above 0.6.
At the promotion meeting, Dr. Shao Jiaping, the technical director of Cree, introduced the XLamp series products used by the original LED street lamps and the recent research and development progress of Cree. XLamp XP-G LED products have a luminous efficacy of up to 132lm/W. The Xlamp XP-E and XP-C products combine the proven illumination quality and light source reliability of the XR-E and XR-C, but the package size is only 20% of the latter. When talking about the research and development direction of Cree, Dr. Shao said that many photons will be converted into the internal energy of the chip due to the total reflection inside the chip. Cree will roughen the surface of the chip, improve the extraction rate of photons, and finally improve the light. The purpose of the effect.
Dr. Shao Jiaping, Technical Director of Career (China), introduced the company's products and research and development progress
Chen Haijun, director of the Institute of Optoelectronics, has made a report on the development of high-power LED street lamps. He pointed out that LED street lights can be customized according to the specific conditions of the road. At present, LED street lights have been applied to the secondary trunk roads and branch roads to achieve good lighting effects. At present, the two-way six-lane can achieve an average illumination of 20Lx, energy saving of 26%, and the price of LED street lamps is very fast, and the replacement of traditional street lamps has become a trend.
“Road lighting should not only consider central vision, but also important to consider the ability to detect surrounding targets. White light containing short-wavelength blue light is more conducive to the detection of surrounding objects by the human eye. Therefore, white LED street lights can be used to increase road lighting. Security." Chen Haijun pointed out.
Chen Haijun, director of the Institute of Ebara Optoelectronics, introduced the research and development results of the company's high-power LED street lamps
Ningbo Liaoyuan is one of the largest manufacturers of lamps in China. The company's leading products include high-power LEDs, outdoor lighting, high-power high-pressure sodium lamp street lamps, garden lights, landscape lights, power poles, etc. The company's "high-power LED light source module and main road lighting research and development and industrialization" project was included in the National 863 Program. In September this year, the company invested a total of 500 million yuan in Qingdao to build LED packaging production line, drive production line, optical lens production line and LED lighting production line, and plans to officially put into production in the first quarter of next year.
Cree is a US-listed manufacturer of compound semiconductor materials, epitaxial, chip, package and LED lighting solutions. Its advantages are unique in material technology and advanced white light technology in GaN, silicon carbide, etc., with 825 US patents and more than 1,800 international patents. The company is the only LED chip company in the world with a chip factory and a packaging factory in China. At present, the company holds nearly half of the market share in China's high-power LED chips.
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