Osram Opto Semiconductors GmbH of Regensurg, Germany has launched the Duris S 8, a new, multi-chip, high-power member of its Duris S LED series. The close grouping of the LED permits good color consistency in combination with high luminous flux, says the firm. The new Duris S is for use primarily in directional and omni-directional retrofits, as well as in LED spots in indoor lighting. It is particularly suitable for directional lighting in office and business premises, as well as in the home.
The color consistency (color binning) in the directional retrofits is achieved through the close grouping of the LEDs, which corresponds to the coverage of a 5-step MacAdam ellipse. Also available is 3-step MacAdam grouping for applications requiring very good color homogeneity. The Duris S 8 is grouped by color coordinates at the junction temperature of 100°C instead of at room temperature, as is customary. The Duris S 8 has a color rendering index (CRI) of more than 80. "An even higher CRI will be the next step," says Janick Ihringer, product manager SSL at Osram Opto.
The firm says that the new Duris S, which measures just 5.8mm x 5.2mm, emits a great deal of light from a small surface, permitting efficient optical solutions. The LED is available in two versions – GW P9LMS1.EM with six chips or GW P9LRS1.EM with eight chips. Due to the luminous flux at 200mA of 390lm (6-chip) or 500lm (8-chip), a directional retrofit is possible even with the 8-chip version. "Compact, low-cost driver modules are available on the market for the forward voltage between 20 and 30V," says Ihringer. "Moreover, their technical characteristics, such as a longer service life of 25,000 hours or operating temperatures of 110°C, are perfectly tailored to the target applications."
The Duris S 8 can also reduce the system costs of lighting systems, the firm claims: the Duris S package consists of an innovative plastic housing material that is not only particularly resistant to ageing at high temperatures and in short-wave light, but also costs less than the ceramic housings that are frequently used.
