Telecoms ♦ news digest
The handrail, 700 metres long in total, is illuminated by 50,000 warm-white TopLEDs. The LI-EX profiles are outstandingly suitable for this application. As the stairs in the entrance area are different, the length of the luminaires also needs to be adapted individually: for this type of luminaire, this is not a problem.
Golden Dragon Plus LEDs are ideal”, notes Marco Friedrich, chief executive of LI-EX.
Thus visitors to Munich’s Stachus reap the benefit of an efficient lighting solution, merging style with safety.
The refurbishment of “Stachus Passagen” has been in progress since 2007, the project’s client is the Landesbank Baden-Württemberg. The architectural aspects of the project are run by Allmann Sattler Wappner Architekten GmbH, whose concept convinced the decision-makers during the initial architectural competition.
The stairs are illuminated via the handrails, providing a high level of brightness accompanied by low energy consumption.
For construction reasons, the stairs were only able to be illuminated via the handrail – however, the latter was supposed to brightly illuminate the whole surface of the steps. As the lighting for the stairs also simultaneously serves as emergency lighting, powered by a battery in the event of a shutdown in electricity, the need was for lamps with low power consumption.
Thanks to TopLED, 18 metres of handrail illumination requires a mere 100 Watt. In this way, the project in the underground area at Stachus saw the realisation of not only an optically appealing, but also an energy-efficient lighting concept.
The glass facade presented another challenge. Here, there was a need to guarantee an even back- lighting with a high level of brightness and without visible LED light points. However, the short distance between wall and glass facade made challenging demands, both on the light-radiation characteristics of the LEDs and on the interplay with the external lens.
Nevertheless, the LED profiles from LI-EX were able to meet this precondition: “The LED profile sits below at the glass wall and needs to supply a homogeneous brightness across several metres, despite the stray power due to the glass area. For these conditions, the highly-efficient, compact
LI-EX is a part of “LED-Light for you”, a network for lighting technology, initiated by Osram, which works jointly with customers on implementing new solutions based on the efficient and multi-faceted light diodes; since the launch of the Stachus project, the network has been providing specialist advice to the architects, Allmann Sattler Wappner.
Telecoms
Infinera swoops in to support services following Japan earthquakes
The firm is using its indium phosphide based PICs to provide critical support to Pacnet to restore 400Gb/s of capacity in four weeks.
Following the earthquakes and tsunami which devastated northeast Japan earlier this year, Infinera has delivered technology to support Pacnet’s restoration of damaged terrestrial and subsea optical networks.
Pacnet is one of Asia’s leading independent telecommunications service providers and an operator of a regional network providing connectivity among Japan, Hong Kong, China, the United States and other countries throughout the Pacific Rim.
Days after the disaster, Infinera was given the task to deliver 400Gb/s of capacity over Pacnet’s
July 2011
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