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Optoelectronics/Displays??

Multi-chip LED boasts luminous flux of 500lm at 200mA

Posted: 16 Aug 2013 ?? ?Print Version ?Bookmark and Share

Keywords:Osram? LED? retrofits? directional lighting?

Osram Opto Semiconductors recently unveiled a new high power multi-chip member of its Duris "S" LED series. Duris S 8 boasts closely grouped LEDs, permitting very good colour consistency in combination with a high luminous flux. The new Duris S is primarily used in directional and omnidirectional retrofits, as well as in LED spots in indoor lighting. It is particularly suitable for directional lighting in office and business premises.

The very good colour consistency (colour binning) in the directional retrofits is achieved through the close grouping of the LEDs, which corresponds to the coverage of a 5-step MacAdam ellipse. 3-step MacAdam grouping is additionally available for applications requiring very good colour homogeneity. The Duris S 8 is grouped by colour coordinates at the junction temperature of 100C instead of at room temperature, as is customary. "In terms of colour rendering, the Duris S 8 has a CRI of more than 80. An even higher CRI will be the next step," says Janick Ihringer, the responsible Product Manager SSL at Osram Opto Semiconductors.

The new Duris S also emits a great deal of light from a small surface, permitting efficient optical solutions. It measures 5.8x5.2mm and is available in six and eight chip versions. Thanks to the luminous flux of 500lm at 200mA, a directional retrofit is possible even with the 8-chip version. "Compact, low-cost driver modules are available on the market for the forward voltage between 20 and 30V. Moreover, their technical characteristics, such as a longer service life of 25,000 hours or operating temperatures of 110C, are perfectly tailored to the target applications," continues Ihringer.

The Duris S 8 can also reduce the system costs of lighting systems: The Duris S package consists of an innovative plastic housing material that is not only particularly resistant to ageing at high temperatures and in short-wave light, but also costs less than the ceramic housings frequently used.





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