news digest ♦ LEDs
are Howard University in Washington, Morgan State University in Baltimore, and Rose-Hulman Institute of Technology in Terre Haute, Indiana.
The ERC’s many industry partners, ranging from major lighting companies to small start-up firms, help guide strategic planning, spur innovation, and provide university students with first-hand experience in entrepreneurship as well as corporate research and development. This summer, four ERC graduate students have taken internships with ERC industrial partners, and two ERC students have started a new company based on ERC technology and will be supported this summer by a Boston- based venture capital firm.
Osram lights up Munich underground safely and in style
The luminaires from LI-EX employ 15,000 cold- white Golden Dragon Plus LEDs and 50,000 warm- white TopLEDs in the entrance area of the new “Stachus Passagen” in Munich.
For decades, Osram’s former slogan – “Hell wie der lichte Tag– As bright as broad daylight” has been gracing the facade of buildings at Munich’s Karlsplatz roundabout.
Now the light manufacturer is also represented in the underground area of this bustling city-centre square, in the form of its subsidiary Osram Opto Semiconductors. The challenge was to implement the lighting concept in the entrance area of the newly redesigned station (for the S-Bahn suburban network and U-Bahn city metro).
The new entrance area of the S-Bahn suburban- network and U-Bahn underground metro station at Munich’s Stachus is illuminated by LI-EX profiles, using thousands of LEDs from Osram Opto Semiconductors.
Schmidt-König, planning office for lighting, and light experts LI-EX constructed their plans based on LEDs from the Regensburg-based semiconductor manufacturer. The result is a Stachus with brilliant illumination and a low requirement for maintenance resources.
Since June 2010 the entrance area of the S-Bahn and U-Bahn station and the “Stachus Passagen” at Munich’s Karlsplatz has been reconstructed; in this process, a new lighting concept has been put into effect.
In its project management capacity, the Munich- based Schmidt-König planning office for lighting decided for several reasons in favour of using the LED lighting solutions provided by LI-EX, the Regensburg-based lighting specialist.
It was particularly important for Michael Schmidt and the team to get good longevity of the lamps, to keep service costs low. The lighting technology used also needed to save space and, at the same time, provide high output with defined light-radiating characteristics.
In the course of the eleven-month refurbishment project beneath the Stachus, a total of 65,000 LEDs sourced from Osram Opto were installed into the LI-EX profile. The latter is characterised by its flexibility; the distances between the LEDs are freely selectable, and lengths ranging up to three metres can be supplied.
Two different LED types were installed in the process: for the facade lighting and for the architectural upgrading of the entrance area, as well as for the backlighting of a bronze-coloured glass facade, 15,000 cold-white Golden Dragon Plus LEDs were used. They supply a bright and even illumination, without scattered light or dazzle, and with low power consumption. An additional factor is the good colour rendering index of the LED light sources. This provides a natural colour impression and thus a higher level of safety, due to a more clearly contoured environment.
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www.compoundsemiconductor.net July 2011
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