Twice the output in a compact package


OSRAM AG, OSRAM Opto Semiconductors GmbH München: OSRAM Opto Semiconductors has added another LED to its portfolio for projection applications. The new OSRAM OSTAR Compact 2x2 is the brightest LED of its type on the market. With twice the brightness in all colors and near record-breaking green values this new version is an excellent addition to the existing Compact versions. Its high performance makes it ideal for high-power projectors for the commercial and domestic sectors. 
LEDs in the OSRAM OSTAR Compact series now offer even greater flexibility for projectors thanks to the new 2x2 version. With just one set of Red, Converted Green and Blue it is possible to achieve a luminous flux of 400 lm from the projector. The new version has been designed specifically for imager diagonals between 0.4 inches and 0.55 inches. If multiple sets of the LEDs are combined for larger imager diagonals the high projector brightness levels needed for office applications can be achieved. 
The compact LED offers the best ratio of light to size. With dimensions of 5.8 x 4.6 mm and an output of 85 lm per mm• of footprint it is the brightest LED in this package class on the projection market – measured in pulse mode for green at an operating current of 6 A. It contains two 2 mm2 chips and produces twice the output of the standard Compact LED with one chip. 
The package is available in Red, Converted Green and Blue. In Converted Green, for example, the LED has a typical luminous flux of 2400 lm in pulse mode at an operating current of 6 A. No other comparable LED has achieved this before. This enormous increase in output is based on the two integrated blue chips in state-of-the-art ThinGaN technology and the green phosphor converter. Since a greater proportion of green than red or blue is needed to produce white light, the increase in the brightness has a significant effect on the overall system brightness of the projector. 
Wolfgang Schnabel, who is responsible at OSRAM Opto Semiconductors for the Compact series, mentioned another major benefit: “Each chip in the new OSRAM OSTAR Compact 2x2 can be individually controlled, which means that the drivers can be individually designed – either for high voltage and low currents or vice versa. If high-voltage LED drivers are used the new LEDs not only provide greater system brightness but also greater system efficiency.”
Double the light output from the OSRAM OSTAR Compact 2x2 translates into better performance by the projectors. 
ABOUT OSRAM OPTO SEMICONDUCTORS OSRAM is part of the Industry sector of Siemens and one of the two leading lighting manufacturers in the world. Its subsidiary, OSRAM Opto Semiconductors GmbH in Regensburg (Germany), offers its customers solutions based on semiconductor technology for lighting, sensor and visualization applications. OSRAM Opto Semiconductors has production sites in Regensburg (Germany) and Penang (Malaysia). Its headquarters for North America is in Sunnyvale (USA), and for Asia in Hong Kong. OSRAM Opto Semiconductors also has sales offices throughout the world. (Press Release 27.09.2011)
Quelle: OSRAM AG | Foto: OSRAM AG
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