Brightest LED Puts Light Bulbs in the Shade

Jun 14, 2005

Osram has developed the world’s brightest white light-emitting diode. Known as Ostar Lighting, this LED supplies 200 lumens, thus literally putting light bulbs and neon lamps in the shade. Previously, the brightest LED from the Siemens subsidiary Osram had an output of 120 lumens. As far as its luminosity is concerned, Ostar Lighting can therefore compete with conventional lamps. The system has an average service life of 50,000 hours, or almost 18 years if used for eight hours a day. The new LED is currently being prepared for series production and is scheduled for market launch in early 2006.

The researchers at Osram Opto Semiconductors in Regensburg achieved this extraordinary level of brightness by channeling almost all of the light that is generated by a semiconductor chip at 700 milliampères to the outside. A number of different techniques were used to accomplish this feat. The chip is coated with a metal reflector and a specially structured, microprismic surface that steer light rays directly upward. The chip radiates blue light that is changed into white light by a second, yellow coating.

Because LED technology is still expensive, the extremely bright light-emitting diode will initially be used for special lighting applications such as spotlights, reading lamps, designer lamps and safety lamps. Since the Ostar Lighting system measures only 1 x 3 cm and has an installation depth of six millimeters, it opens up new design opportunities for using LEDs in furniture or buildings, for example.

Explore further: Uber says outside review shows customer data safe, private

add to favorites email to friend print save as pdf

Related Stories

LG Chem ups bending radius in OLED lighting milestone

Jan 29, 2015

South Korea-based LG Chem continues to work on the potential of OLED technology. Tom Dawson, editor in chief of AndroidHeadlines, said, "LG has quickly become a name when it comes to flexible OLED displa ...

Rohinni's Lightpaper invites innovative lighting

Nov 30, 2014

Rohinni's Twitter statement on what this company is all about is quite simple: We print light. Print light? This Coeur d'Alene, Idaho-based company is introducing its Lightpaper, with a promotional video ...

Recommended for you

Aircraft set for minute-by-minute tracking

5 hours ago

All commercial flights worldwide could soon send out an automated signal every minute in times of distress to help rescuers find downed aircraft more easily.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.