Thursday, November 3, 2011

OSRAM Developers Reach New Milestone in LED Technology

OSRAM developers have achieved a milestone in LED technology by producing a 124,000 candelas rating for an LED flashlight with 7.5 degrees as the coverage angle. So, by combining a warm white colour temperature and an excellent colour rendering, LED spotlights can now achieve a power range that has been achieved till now only by high-intensity discharge lamps. 

 This type of spotlight is of special interest for shop illumination and architecture, where they can be used for novel applications. This breakthrough achieved by OSRAM has changed the focus of the lighting market towards semiconductor-based technologies.

Breakthrough for the researchers at OSRAM: for the first time ever an LED spot has achieved a rating of 124,000 candelas in a coverage angle of 7.5 degrees. Credit: OSRAM

Thus far, high-intensity discharge lamps have been predominant, however, the new OSRAM LED spotlight, when joined with a standard commercial reflector in continuous operation, can attain a rating of 124,000 candelas with a 7.5 ยบ coverage angle. Nevertheless power consumption is only 60 W. When compared, a reflector with coverage angle of 9 ° and one spotlight with a standard 70 W high-intensity discharge lamp can achieve a rating of roughly 82,000 candelas. The phosphors and the connection technology were modified for maximum results to achieve these high ratings.
OSRAM Opto Semiconductors’ new generation of chip technology, the UX3, enables the functioning of the LEDs at a higher current. Here, the power supply does not flow through the chip surface, but it is combined within the chip itself. Therefore, the light is beam is focused uniformly and reaches the illuminated object more uniformly compared to other methods.
The new LED module exceeds the minimum rating of 3,000 Lux for flashlight illumination and it reaches a rating of 124,000 Lux from a distance of 1 m and 5,000 Lux from a distance of 5 m. Therefore, constructions and exhibits can be lighted from a greater distance without disturbing the visual effect.

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