2013年12月8日星期日

the photometric benefits of both direct and indirect lighting

The luminaire has the appearance of a glass and metal sculpture in switched-off state and is transformed into a luminous element of design when switched on, reminiscent of a roller-coaster with its m?bius form. The 30 wide-area light sources within were developed as part of the research project supported by the German Federal Ministry of Education and Research, and each have a luminous surface of 18 x 6.5 centimetres. Efficiency of 20 lm/W with a transmission of 57% was achieved for the first time for transparent of led high bay light  "The next step for transparent OLEDs is industrial series production, and we'll be tackling that in 2014," remarked Ulrich Eisele, responsible for the OLED sector at Osram.

LEDs have no visible conducting path and feature secure encapsulation, until now a major deficiency with the transparent light source. New is also the possibility of defining a specific light distribution side with the transparent LEDs featuring distribution on both sides: in the one direction the light merely has a decorative function as it is weaker, but in the other it can be used functionally, for purposes of illumination. LEDs in this way unite the photometric benefits of both direct and indirect lighting. Panels and the luminaire itself were developed at the Osram location of Regensburg in Germany.

LEDs are expected to be the primary choice for transparent, wide-area light sources in the future, because in contrast to LED they emit wide-area light directly, so that efficiency losses from the conversion of 'point-sourced' to 'wide-area' light no longer occur. In addition,led flood light are not dim but absolutely brilliant and clear. They thus enable room partitions that when switched off are similar to transparent glass and in switched-on state light up opaquely. Mosaic windows that radiate without sunlight in the background also become possible. Another option might also be a luminous car canopy.

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