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本帖最后由 whg8633 于 2009-4-19 01:53 编辑
(请高手鉴别消息真伪)大功率LED新突破,Osram打破僵局!500流明@1.4安培
LED行业似乎已经沉默了太久了,在整个行业处于领先位置的CREE,日亚化工,lumileds(飞利浦旗下)最近都没有新的消息,首先打破寂静的竟然是Osram。
日前,Osram宣布了最新的研发成果,大功率LED在350mA驱动下,光输出达到了155流明,效率高达136流明/瓦,色温是5000k。这个记录远远超过目前市场上领先地位的CREE Q5 LED,Q5的光效是107流明@350mA
最难得的是,这款单核的LED能够使用高达1.4A的大电流进行驱动,这个时候,总的输出达到了500流明,这甚至超过很多多核封装的LED。
Osram把这个成果归功于高度优化的芯片技术,和先进的荧光粉技术,以及高效的封装技术完美结合。Osram已经把这些相关的技术申请专利。
尽管这仍旧是一个实验室记录,离真正的产品还有些距离,但是无论如何,这都是LED行业中一个振奋人心的消息,这意味着在迈向通用照明领域的路上,LED又迈出了坚实而有力的一步。
多年来,由于lumileds,CREE,以及日亚化工等LED行业巨头的突出位置,Osram在LED底层技术上罕见突破性的成果,这次的记录刷新打破了LED行业的格局,Osram继CREE之后,成为了LED行业中引人注目的新星。而在此之前,多数人眼中的Osram只是一个仅仅用普通的封装技术来“打包”LED芯片而获得大功率多核产品的“加工车间”。
期待这一领先的技术早日成为商业化的产品。
Osram reports 155 lm and 136 lm/W from R&D LED
21 Jul 2008
Osram is claiming a record for luminous flux and efficacy from an LED driven at 350 mA.
By improving all the technologies involved in the manufacture of LEDs, Osram says that its development engineers have achieved new records for the brightness and efficiency of white LEDs in the laboratory.
Under standard conditions with an operating current of 350 mA, brightness peaked at a value of 155 lm, and efficacy at 136 lm/W.
White prototype LEDs with 1 mm2 chips were used. The light produced had a color temperature of 5000 K, with color (x,y) coordinates at (0.349, 0.393).
As shown in the graph, the LEDs can be driven at 1.4 A, and produce up to 500 lm.
Osram says that the key to success was a perfectly matched system of optimized chip technology, a highly advanced and extremely efficient light converter (phosphor) and a special high-performance package.
Rüdiger Müller, CEO at Osram Opto Semiconductors, commented: "It was the successful combination of Osram know-how in different fields that led to these new records in efficiency and brightness. Starting with the light converter we will be gradually moving the new developments into production." Osram says it has already applied for patents for the technologies that lie behind these records. |
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