Long-life white LEDs

29 May 2013 Opto-Electronics

Duris S 5 is the latest high-tech addition to OSRAM Opto Semiconductors’ Duris LED family. This new component offers an impressive lifetime of more than 35 000 hours and can withstand temperatures up to 105°C. It is ideal for indoor lighting, in retrofits, in downlights or in panel luminaires.

The packaging is made from highly robust synthetic material that is resistant to ageing caused by high temperatures and shortwave blue light. The square footprint and the small round light-emitting surface translate into a compact arrangement in the lamp. This in turn means that the light can be efficiently coupled into secondary optics such as lenses and reflectors.

The new Duris is being launched in three versions with different chip surfaces and therefore three different brightness levels.

The ideal application for the first version is anywhere where a large amount of light has to be emitted from a small surface area, for example in downlights and LED retrofits. At 3000 K and a CRI of 80, it achieves a brightness of 97 lm and an efficacy of more than 100 lm/W at an operating current of 150 mA. Its optimised forward voltage of around 6 V means that efficient driver solutions can be used that have a beneficial effect on the cost-effectiveness of the overall system.

The second version is designed for high efficacy, achieving 125 lm/W at 65 mA with 24 lm at 3000 K. It is therefore designed for use in panel luminaires and linear retrofits in which individual light points should not be visible and low energy consumption is an important consideration.

Version three has only a slightly lower efficacy and is designed for optimum system costs. It achieves an efficacy of 113 lm/W with a brightness of 28 lm, also at 3000 K.

For more information contact Ryan Hunt, OSRAM Opto Semiconductors, +27 (0)79 525 1779, [email protected], www.osram-os.com

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