Photonics Research at Boston research center, reported the progress of LED technology, claiming that luminous efficiency to achieve 330Lm / W. Known as photon-rectcling semiconductor light source, given the blue and yellow light of two wavelengths. The lights when people feel it is white. The light efficiency, and the LED on the market today is higher than the 10 times or more. However, it should be noted that from the laboratory to commercial products that may also be a very long road.
OSRAM OS has developed a slim LED, called the Market LED. This product is only 6mm high, along the border installation (side-mounted) LED will light launched into an optical material (light-guidemateria) surface of the light is evenly distributed. This module can be used in commercial lighting factory, built in the product for passageways, corridors, theaters or theater seat directional lighting. Energy consumption of the module from one watt to several watts, depending on the size of the module is basically cool.
OSRAM OS another LED products are mainly used in railway, has to take root. OSRAM has developed a small, narrow-beam unit, unit has 10 LED, the light from gathering in the lens, so you can see long distances. This unit has four different light angles. 24V ignition can be used. Amber and yellow colors, unit power consumption 1.2W, light intensity 750cd (blue, green unit is 1.5W, light intensity 55cd). The product is now into the market, the focus for lighting buildings and monuments (acent lighting).
BP, the company has chosen LED gas stations in the United States in 2000 (service stations) renewal Cards, BP will use Lemileds outline lighting system (contour-lighting system) "Chipstrip" instead of neon. Chipstrip is a colored plastic tubes, placing the inner colored LED, Lumileds company said, Chipstrip system life is 5 times the neon lights, energy efficiency is also higher.
Austria's lighting design company (Bartenbachg lightin laboratory) has completed a large-scale experiments, using the 14,000 white and color mixing LED lighting throughout the room. Light levels to achieve 600-700Lux, enough for a general office lighting. To compute white, blue, blue / green, amber and red diode mixing effect, to get the 2500-3000K in the warm temperature, its color index is very close to the best fluorescent lamps.
In Sweden, Swedish National Road Administration to continue to use LED for traffic lights to reduce heat large demand for traditional traffic lights. LED traffic lights follow the first root pole, along the 30Km road to experiment with the car accident rate. Security is the implementation of this project the main factor. High heat signal light in the often fog, snow, rain and to make visible environmental deterioration, which should be reduced. Reduce heat large signal light also resulted in substantial energy savings (some exceptions).
U.S. Lightin Research Center (LRC) reported that the life of white LED than the hoped for much lower. LED manufacturers about long-life LED, it is already carefully together. Because, unless application LED cold ambient temperature can be maintained. Even so, LRC trial found that a number of LED is also used in 4000 hours after the light output was reduced to 65% and dropped to 45% after 6000 hours. Manufacturers and researchers have pointed out, the problem is because the epoxy resin caused by the LED package. Sent a small amount of epoxy resin exposed to ultraviolet LED (UV) will turn black.
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