Ultra-compact yellow LED opens headlamp design horizons

February 18, 2014 // By Paul Buckley
Osram has developed the yellow Oslon Compact LED which the company claims will open up new design options for turn indicators in vehicle forward lighting.

With package dimensions of 1.5 mm x 1.9 mm x 0.7 mm the LED is so small and yet so powerful that it is ideal for use in light guide applications. The high-power LED, based on indium gallium nitride (InGaN), offers an output of more than 120 lumen even at high currents and application temperatures of 100° C (Tj in the chip).

The yellow Oslon Compact is an addition to the company's two white versions and is ideal for front turn indicators. Thanks to its compact design it can be used to create light guide solutions. Light guides themselves measure less than 10 mm in diameter so the LEDs have to make full use of the available area by being packed very close together.

“For turn indicators or daytime running lights, the new Oslon Compact is suitable especially for light guide solutions, just like the other members of the product family”, said Andreas Geistreiter, Marketing LED Automotive at Osram Opto Semiconductors. “Thanks in particular to its high luminous efficacy and compact size it represents a further step in the direction of miniaturization and greater freedom of design, opening up such possibilities as quasi-3D effects. This special design element is of huge interest in the premium automotive segment, and thanks to the new Oslon Compact it is now easier for set makers to achieve.”

The yellow light from the LED is not generated directly but by ceramic conversion from a blue chip using C² technology. By combining C² technology with UX:3 chip technology, the Oslon Compact is capable of achieving high output and thermal stability  – especially at high currents and temperatures. At room temperature and 700 mA, the LED achieves a typical brightness of 140 lm. At application temperatures of 100°C (Tj in the chip) the Oslon Compact still achieves 120 lm.

Related articles and links:


News articles:

Audi to test laser headlight at Le Mans race

Osram makes