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Boost in LED performance: Up to 20 percent more light and improved thermal stability

28th October 2011

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The latest Oslon SSL LEDs from OSRAM Opto Semiconductors provide up to 20 percent more output than their predecessors and offer improved thermal stability, particularly in Hyperred (660 nm). Eenergy-efficient applications such as commercial horticulture are therefore much more efficient. Behind this boost in performance lie the latest developments in Indium-Gallium-Aluminum-Phosphide chip technology (InGaAlP).

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

Depending on the wavelength (590 nm - 660 nm) the new LEDs achieve per increases of 10 to 20 percent. The flagship is the Hyperred version (660 nm) that hits this 20 percent mark. With a brightness of 400 mW at an operating current of 400 mA the LED is much brighter than the predecessor model. It converts 46 percent of the current into light. At an operating current of 350 mA it achieves an impressive 355 mW, which corresponds to a conversion rate of 49 percent. What’s more, the LED has a long life: At an operating current of 700 mA and at a temperature of 80°C it will last more than 100,000 hours (L70/B50).

Fewer LEDs needed for the same output

In practical applications this means that 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. Martin Wittmann, Marketing Manager at OSRAM Opto Semiconductors explains: Our customers benefit from the large increase in brightness because it leads to much shorter payback times. 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 3 mm x 3 mm and choice of beam angles (80° and 150°), the Oslon SSL LEDs are particularly good for clustering so high brightness can be achieved on a small footprint. When combined with LEDs in the Deepblue color (450 nm), they create a light color that is tailor made for the requirements of commercial horticulture.