Yang rectification of names is called LED R & D to do a little work
Aladdin Lighting Network invite leading experts, held in Shenzhen, “the rational behind calling hot?? 2009 results and trends of LED application products Seminar” for the LED lighting companies, designers and owners to share the end results of a high level of wisdom .
Former professor of Southeast University, Guangdong, Snow Light Optoelectronics Technology Co., Ltd. Senior Consultant, name the chief scientist Yang doing, “high-power white LED illumination of the road” theme of the report.
Interpretation of LED light-emitting process: carrier recombination
Name the interpretation presented by Mr. Jan LED light-emitting process several concepts, including: the internal quantum efficiency, quantum extraction rate. At the same time, he passed for example, describes the quantum efficiency of white LED light output estimates.
In street lighting, the high pressure sodium and high-power white LED contrast
Mr. Young introduced the name the high-pressure sodium road lighting as the advantages and disadvantages. Then, Mr. Yang introduced the name the high-power white LED lighting in the rapid development of the grounds: an LED is directional radiation, high light efficiency than the high-pressure sodium lamp; two entrepreneurs and experts claim: LED luminous efficiency as high as 90 ~ 160lm / W; 3 long life LED (50,000 ~ 100,000 hours), when used for street maintenance costs low; 4 LED light source for the latest and greatest, high pressure sodium lamp dark good vision is the best lamp lighting the election; five government energy task , built a number of prescriptive model for road lighting project and intends to actively promote. 6 “10 City 10 000 semiconductor lighting” applications play a significant role in promoting a promotion, everyone wants to share.
However, rectification of names, Mr. Young LED road lighting conditions that have not yet matured, should play its strengths, not Ying Peng. The following reasons: 1, LED indicators hard to meet their performance requirements; 2, LED optical system is not yet mature; 3, LED control circuit supporting the reliability of low; 4, LED’s cooling system is too expensive, inefficient; 5 , the LED lighting system is too costly and not promotion; 6, no uniform standards, various different non-interchangeable products, maintenance difficulties and high cost. Therefore, these problems cause LED to the promotion very difficult.
Then, Mr. Yang expressed his name the the white LED made a realistic assessment of: 1, LED is a very promising light source; 2, monochrome, and low-power white LED in the LED display lighting, decorative lighting, small power of local lighting has shown its superiority, and would play a stronger role, but much still to be improved. 3, on the high-power white LED’s over-exaggerated propaganda must be cautious.
View of the LED lighting
Mr. Young expressed his name the LED lighting on the view: 1, LED lighting model too much, too much damage, can not continue to go on such a practice. 2, to spend 5-10 years, when the light effect really achieve 80lm / W or more, single-grain power 5-10W, the cost per lumen to 3 cents, a year free basic maintenance, then the road will be able to lighting into. 3, many entrepreneurs have lamented down the drain. These entrepreneurs the money invested in it, but no market, no market for any thing, do not do.
Finally, Mr. Yang made a call rectification of names: the experts, professors, not spending your own capital to suspend the call to focus on road lighting to improve light efficiency and reliability, cost reduction, in order to do a little LED is solid in the research and development.
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