Osram Researchers Develop New LED Spotlight
Sep 16, 2011
Osram AG, the German-based division of Siemens AG, has revealed its record-breaking success of with the latest LED spotlight research. Developers in the laboratory have attained 124,000 cd for the lighting solution with a coverage angle of 7.5 degrees.
The spotlight is a combination of warm-white color temperature (3000K), good color rendering, and a power range ranking among HID lamps. In contrast, an average 70W HID spotlight (with reflector) is only capable of an 82,000 cd rating with a 9 degree coverage angle.
The LED would work well in construction applications, reaching 5000 lux at a distance of five meters. This is in addition to already meeting the minimum requirement of 3000 lux. It is also more energy-efficient, using 60W instead of the usual 70W.
To be able to produce these results, there were some changes made to the phosphors and the connection technology. Now, the LED can operated with a higher current which separates more light from the chip than typical spotlight technology. The power supply's position has also been moved from the chip's surface to within the chip itself. This causes light distribution to even out more and produces a better effect on the object.
As a result of the improved aesthetics of the spotlight, target applications for this spotlight will be architecture, studios and shop illumination. The long 50,000 hour lifespan and low maintenance quality further make it ideal for uses in displays.
Author: Rebecca Milne
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