OSRAM boosts LED performance
23 November 2011
Opto-Electronics
The latest Oslon SSL LEDs from OSRAM Opto Semiconductors provide higher output than their predecessors and offer improved thermal stability. Behind this boost in performance lie the latest developments in indium-gallium-aluminium-phosphide (InGaAlP) chip technology.
Powerful and efficient long-life light sources are vital for lighting systems that are in operation for many hours of the 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 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 output increases of 10% to 20%. The flagship is the hyperred version (660 nm) which hits the 20% mark. With a brightness of 400 mW at an operating current of 400 mA, the LED is much brighter than the predecessor model and converts 46% of the current into light. At an operating current of 350 mA it achieves 355 mW, which corresponds to a conversion rate of 49%. At an operating current of 700 mA and at a temperature of 80°C it will last more than 100 000 hours (L70/B50).
With their compact package size of 3 x 3 mm and choice of beam angles (80° and 150°), the Oslon SSL LEDs are particularly good for clustering to achieve high brightness on a small footprint. When combined with LEDs in the deepblue colour (450 nm), they create a light colour that is tailor made for the requirements of commercial horticulture.
For more information contact Ryan Hunt, OSRAM Opto Semiconductors, +27 (0)79 525 1779, [email protected], www.osram.co.za
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