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Found 2 results

  1. The U.S. Department of Energy (DOE) has released CALiPER Report 24: Photometric Testing, Laboratory Teardowns, and Accelerated Lifetime Testing of OLED Luminaires, which is the first CALiPER report evaluating the performance of OLED luminaires based on independent procurement and testing. Among the findings: Overall, efficacy of the OLED luminaires was low compared to contemporary LED luminaires, ranging from 23 lm/W up to 45 lm/W. OLED panels range between 42 and 55 lm/W according to panel manufacturer data, and much of the efficacy reduction in the luminaire performance is due to very inefficient transformer and driver selections and combinations. The wider availability of dedicated OLED drivers should improve efficacies in the near future. Light distribution was consistent among the tested products – a soft, diffuse, roughly Lambertian emission, moderated only by the physical configuration of the luminaire hardware. This is expected to produce very soft shadows from objects in the path of the light, and patterns of light on surfaces with very soft gradients at the edges of the “beam.” The drivers for all four CALiPER luminaire types were different, with some luminaires using a single driver and others using a combination of electronic components for voltage transformation, conversion from AC to DC, and voltage/current control. The OLED luminaires performed very closely to the manufacturers’ published technical data, where available. OLED panels, drivers, and transformers are still in a steep curve of development. Goals are higher efficacy; longer life, before panel replacement on the jobsite is needed; better lumen maintenance over time; even better color quality and wider CCT options; higher-efficiency drivers; and robustness under high temperature, high humidity, and rough handling from shipping and installation. Improvements in these areas could make OLED luminaires more accepted in the architectural marketplace, and adopted as a trusted lighting solution. For a closer look at the findings, download the full report Testing of OLED Luminaires (3.68 MB).pdf Rubik from Mark Architectural Lighting Source: http://energy.gov, acuitybrands
  2. Carpetlight: State of the Art Lighting Technology combined with Textiles Carpetlight, founded by Götz Schmidt zur Nedden and Till Sadlowski and based in Hamburg, Germany, finally found a way to offer customized flexible lamps in any size with any combination of LEDs to lighting professionals. The brilliant product reaches brightness and color rendering indices that have never been achieved before. On the contrary to other smart-textile technologies currently used in design and fashion which are merely glimmering or decorative fabrics, Carpetlights´s novel product delivers a luminous output high enough to light whole objects and rooms. The lighting system comes in predefined packages for scene-, film- and stage lighting, but is even great for any custom architectural application, both in indoor and outdoor environments. Different groups from the lighting profession have been dreaming for a while of truly flexible light sources. Initially, OLED lighting was promoted as the best future solution, but meanwhile, quite a few alternatives such as flexible- and planar lighting solutions appeared on the market. The lighting system is lightweight, flexible, versatile, efficient and can be adapted to any desired form or function by folding, rolling, crumpling, hanging, wrapping, hooking or stretching it. The product is excellent for use at fashion shows, exhibitions, architectural applications, interior design or archeological excavations. More information: lighting-inspiration