LED prototype enables flexible headlight design

October 02, 2012 // By Christoph Hammerschmidt
Osram Opto Semiconductors announces the prototype of the Oslon Compact, currently the most compact high-power LED for the automotive market. Thanks to the flexible arrangement of these small LEDs it will be easier and more cost-effective to create unique, signature headlight designs. A prototype of this LED will be unveiled at the SIA Vision conference in Versailles.

Despite their high efficiency, luminous intensity and durability, LEDs have faced a major acceptance hurdles in its deployment as light sources in vehicle headlights: For different application areas, different LEDs have had to be used in order to achieve a uniform arrangement of the light-emitting surfaces. Sophisticated design concepts therefore involved a large amount of effort and high costs. The extremely small size of the new Oslon Compact – combined with its high light output – now enables a single LED type to be used as the default light source for all automotive forward lighting applications, Osram Opto Semiconductor promises. The light points in the headlight can be placed in any arrangement, for example, and customized designs can be developed to give different vehicles a unique appearance. The small size of these LEDs means they can be placed very close to each other so they can even be used for light guide solutions and adaptive frontlighting systems (AFS).

The compact design has been achieved by reducing the LED to its bare essentials. The entire LED package is not much larger than the actual light-emitting surface of the chip. Osram's successful UX:3 chip serves as technology platform for the new prototype. from Osram Opto Semiconductors which provides high luminous efficacy even at high currents. The prototype to be showcased at SIA-Vision measures only 1.5x1.9 mm2 and produces 200 lumen from 700 mA. The clear white light from the chips is achieved through Osram's C2 technology which converts blue light with the aid of ceramic conversion.

“The development of the Oslon Compact is a direct response to changing market requirements in the automotive sector. There is a need now for high-power LEDs that are more compact and more cost- effective than before”, said Peter Knittl, Director Marketing Automotive. “We have been able to adapt the reliable chip and package technologies that have proved so successful in the Oslon Black Flat and Ostar