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  Date: 21/04/2013

Osram expands the Duris LED family for linear and area indoor lighting

Osram Opto Semiconductors has expanded its Duris LED family with "Duris S 5", which offers lifetime of more than 35,000 hours and can withstand much higher temperatures in the applications – up to 105 degrees Celsius (°C). Duris S 5 is suggested for indoor lighting – in retrofits, in downlights or in panel luminaires used in places such as offices, hotel lobbies and museums..

Osram says the package for Duris S 5 is made from robust synthetic material that is resistant to aging caused by high temperatures and short-wave blue light. “This innovative LED package makes the component robust and cost-effective. This is then reflected of course in the luminaire manufacturing costs for our customers”, said Janick Ihringer, Product Manager Marketing SSL at Osram Opto Semiconductors.
The new Duris is being launched in three versions with different chip surfaces and therefore three different brightness levels.
The first version is for large amount of light need to be emitted from a small surface area, for example in downlights and LED retrofits. At 3000 Kelvin (K) and a CRI of 80 the first version achieves very high brightness of 97 lumen (lm) and an efficacy of more than 100 lumen per watt (lm/W) at an operating current of 150 milliamps (mA). Its optimized forward voltage of around six volts (V) means that efficient driver solutions can be used that have a beneficial effect on the cost-effectiveness of the overall system, says Osram.

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.

The third version offers 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. “With Duris S 5 we can offer our customers the greatest possible choice. The right LED for the particular design of luminaire can be selected, depending on whether high brightness, high efficacy or a good average of the two is required", added Janick Ihringer.

The certification process for the high lifetime standard of LM-80 with 10,000 hour tests is already under way. An initial announcement is expected in early summer.

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