OSRAM Opto Semiconductors has carried out pioneering work in the development of thin-film LEDs – supported by Fraunhofer researchers from Jena. . . . the efficiency and luminosity of LEDs have never yet been sufficient to achieve a major breakthrough. Now, thanks to new technologies for chip manufacturing, structural design (OSTAR) and beam shaping . . . the light output of the low-price, energy-saving LEDs has been vastly improved. . . . The company took a major step forwards when it devised chip technology that permits the extraction of light in a single half sphere. A novel platform for the thin-film LEDs ensures efficient temperature management and allows all colors of LEDs to be combined. To use the light emitted by the LED chip as fully as possible, a special optic for the respective application is required and was accordingly designed and implemented by the Fraunhofer researchers. It consists of two parts: a primary and a secondary lens. The primary lens collects the light emitted by the LED close to the chip and combines it to form a beam. The secondary lens homogenizes the light beam. . . . OSTAR modules will be made standard equipment in car headlamps as of 2008. . . . more
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