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Press Release

OSRAM Opto Semiconductors GmbH

Release date: July 21, 2008

OSRAM Achieves Quantum Leap in Brightness and Efficiency of White LED

Santa Clara, CA (July 21, 2008) - By improving all the technologiesinvolved in the manufacture of LEDs, OSRAM development engineershave achieved new records for the brightness and efficiency ofwhite LEDs in the laboratory. Under standard conditions with anoperating current of 350 mA, brightness peaked at a value of 155lm, and efficiency at 136 lm/W. In generating these results,researchers used white prototype LEDs with 1 mm-square chips. Thelight produced had a color temperature of 5000K, with colorcoordinates at 0.349/0.393 (cx/cy).

The key to OSRAM's success was the efficient interplay among allthe advances made in materials and technologies. A perfectlymatched system of optimized chip technology, a highly advanced andextremely efficient light converter, and a special high-performancepackage all combined to produce the world record performanceresults.

Potential applications for this high-performance LED technologyinclude general illumination, the automotive sector, and anyapplication that calls for large, high-power LEDs. Thesesemiconductor light sources are also suitable for high operatingcurrents. At 1.4 A, they can produce up to 500 lm of white light.This means that in the future the LEDs can also be used forprojection applications as blue and green chip versions.