200 Lumen Light Output

July 1, 2005
Researchers at the German light specialist firm Osram Opto Semiconductors say they have produced the world's strongest white light-emitting diode (LED).

Researchers at the German light specialist firm Osram Opto Semiconductors say they have produced the world's strongest white light-emitting diode (LED). The “Ostar Lighting” has a light output of 200 lumen and, therefore, literally outshines filament bulbs and fluorescent tubes.

The researchers achieved the exceptional level of brightness by deflecting outward almost the entire light produced by the semiconductor chip at 700 milliamps. The coating of the chip — a special metallic mirror — and a specially structured chip surface with microprisms deflect the light rays directly upward. The chip gives off blue light, which is then converted into white light by a further yellow coating.

Sponsored Recommendations

Highly Integrated 20A Digital Power Module for High Current Applications

March 20, 2024
Renesas latest power module delivers the highest efficiency (up to 94% peak) and fast time-to-market solution in an extremely small footprint. The RRM12120 is ideal for space...

Empowering Innovation: Your Power Partner for Tomorrow's Challenges

March 20, 2024
Discover how innovation, quality, and reliability are embedded into every aspect of Renesas' power products.

Article: Meeting the challenges of power conversion in e-bikes

March 18, 2024
Managing electrical noise in a compact and lightweight vehicle is a perpetual obstacle

Power modules provide high-efficiency conversion between 400V and 800V systems for electric vehicles

March 18, 2024
Porsche, Hyundai and GMC all are converting 400 – 800V today in very different ways. Learn more about how power modules stack up to these discrete designs.

Comments

To join the conversation, and become an exclusive member of Electronic Design, create an account today!