Osram reveals best headlamp LED yet

Osram Opto Semiconductors is unveiling a 2,000 lm prototype headlamp LED at next week’s ISAL 2015 automotive lighting symposium.

Called Oslon Black Flat S, the five-die surface-mount device has better chips and improved thermal management compared with its predecessor.

The linear arrangement, lens-less construction and anti-reflection package eases demands on associated optics when forming mandatory flat-topped glare-free beams, and 2,000 lm output means is can replace more than halogen incandescent bulbs.

“A single LED is sufficient as the light source for combined low-beam and high-beam systems, and the excellent thermal connection allows for passive cooling,” said the firm. “The Oslon Black Flat S is consequently a viable alternative to HID [high intensity discharge] lamps.

Larger contact pads are partly responsible for better cooling – at 3.75×7.9mm it is slightly larger than its predecessor.

When dissipating 12W (at 1A drive, 25°C ambient) the chip is at 69°C – the earlier LED ran at 83°C.

Operated at 2A (31W in, Vf=15.5V) optical output is 6.5W.

“The five chips can also be driven individually”, said Osram engineer Stefan Grötsch. “The future LED version will therefore be ideal for adaptive front lighting systems.”

Production devices will be added to the Osram automotive portfolio at the end of 2016.

steve bush

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via Yuichun