4 November 2011

Osram’s new InGaAlP chip technology boosts output and thermal stability of red, orange and yellow Oslon SSL LEDs

Osram Opto Semiconductors GmbH of Regensburg, Germany says that the latest developments in its indium gallium aluminium phosphide chip technology (InGaAlP) have boosted light output of its Oslon SSL LEDs by up to 20% compared with their predecessors and offer improved thermal stability, particularly in Hyperred (660nm wavelength). Energy-efficient applications such as commercial horticulture can therefore be much more efficient.

Picture: Increased output from colored Oslon SSL LEDs: up to 49% of the current is converted into light.

Powerful, efficient long-life light sources are key for lighting systems that are in operation for many hours day and night, such as those used in commercial horticulture, architainment and stage lighting, says Osram Opto. The latest chip developments enable the new generation of Oslon SSL LEDs to offer high efficiency and good thermal stability, combined with a low thermal resistance of 7K/W, making them more attractive as light sources that precisely meet such requirements.

Depending on the wavelength (590-660nm), the new LEDs achieve output increases of between 10% and (for the flagship 660nm Hyperred version) 20%. With a brightness of 400mW at an operating current of 400mA, the LED is much brighter than the predecessor model. It converts 46% of the current into light. At an operating current of 350mA it achieves an output of 355mW, corresponding to a conversion rate of 49%.

The LED also has a long life: at an operating current of 700mA and a temperature of 80°C it will last for more than 100,000 hours (L70/B50) so, in practical applications, fewer LEDs are needed to achieve a particular brightness level, or the same number of LEDs can be used to produce a higher brightness level.

“Our customers benefit from the large increase in brightness because it leads to much shorter payback times,” says marketing manager Martin Wittmann. “In commercial horticulture, for example, lighting systems with these LEDs can result in huge energy savings and low electricity costs.”

With their compact package size of just 3mm x 3mm and a choice of beam angles (80° and 150°), the Oslon SSL LEDs are particularly good for clustering, says Osram Opto, so high brightness can be achieved on a small footprint. When combined with LEDs in the Deepblue color (450nm), they create a light color that is tailor made for the requirements of commercial horticulture, the firm adds.

Tags: Osram Oslon SSL LEDs InGaAlP

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