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The coupling of evanescence waves is key to obtaining higher-efficiency LEDs

One of the biggest challenges in creating a better light-emitting diode (LED) is the search for a way to efficiently extract the light generated in the semiconductor device into the surrounding air, while avoiding the internal light reflection that is cause for a considerable waste of energy. A team of Japanese researchers have recently managed to achieve just that, in what is believed to be a huge step toward significantly more energy-efficient LEDs. Read More

ORNL's James Klett with his LED-cooling graphite foam

LED lamps may soon be able to go much longer between fixture replacements thanks to a new graphite foam cooling system developed at the US Department of Energy's Oak Ridge National Laboratory (ORNL). The graphite foam works by passively wicking heat away from the lamp via its lightly-packed, open skeletal structure – and given that a ten-degree decrease in operating temperature can double the lifespan of LED lighting components, the benefits of keeping them cool are clear. Read More

Sony Bravia KDL-NX810

Sony has added to its range of 3D BRAVIA HDTVs with the announcement of the availability of three new NX810 LCD models. In screen sizes of 46-, 55- and 60-inches the sets all feature Full HD (1080p) resolution and 3D capability. DynamicEdge LED Backlighting with local dimming is employed for improved contrast while Sony’s Motionflow PRO 240Hz Technology is on board to ensure smooth motion for fast moving images. Read More

The Integrascope's LED (left) shines light through a drop of blood (center), and the refra...

When bodily fluids such as blood are tested for infectious diseases and unhealthy protein levels, they’re typically mixed with antibodies or other biological reactants to produce a positive or negative reaction. Researchers from Arizona State University (ASU) have now come up with an alternative testing system that they claim is just as accurate, but much simpler, quicker and cheaper. It utilizes LED lights and simple microelectronic amplifiers, and actually uses the sample itself as a diagnostic tool. Because it integrates the sample into the process, inventors Antonia Garcia and John Schneider call their device the Integrascope. Read More

Lighting Science Group's PROLIFIC Series Roadway LED streetlight

It would seem kind of strange if you were driving on a back road at night, far from any known source of electricity, when you suddenly came across a working streetlight. Such a thing is possible, however, and could even become a common occurrence. That’s because Lighting Science Group now manufactures solar powered LED streetlights, that can run entirely independent of local power grids. Even if the availability of electricity isn’t an issue, Lighting Science states they are also brighter, more efficient, and require less maintenance than regular HID streetlights. Those claims obviously impressed somebody, as the company’s PROLIFIC Series Roadway streetlights are now being installed on a 23-kilometer (14-mile) stretch of Mexico City’s elevated Viaducto Bicentenario superhighway. Read More

The six new models of LED ceiling lights from Sharp

Low-voltage halogen downlights are among the most commonly used globes in the world. Despite the low voltage moniker they aren’t very energy efficient, generally producing around the same amount of greenhouse gas as a 60-watt incandescent globe. While there are plenty of environmentally friendly alternatives to incandescent globes, finding a greener alternative for recessed lighting offers less options. Sharp is providing another, however, with its thin design LED ceiling lights. Read More

The Dualplex Display uses the same principle as ye olde time 3D glasses

With the advent of 3D glasses with polarizing filters and LCD shutters you’d be forgiven for thinking we’d seen the last of the archetypal numbers with different colored filters. Well, think again because European researchers have come up with technology they say can display 3D images at a monitor’s full resolution, with no darkening of the ambient light, no restrictions on viewing angle and with less strain on the eyes than other 3D technologies – and yes, it relies on glasses with different colored filters. Read More

The Cyglo bike tire embedded with LED lights

We’ve covered a number of products designed to light up a bicycle to increase the safety of nighttime riding. Such devices usually involve adding lights to the pedals or spokes of a bicycle but a new invention from Night Bright Tyre Ltd. adds LED lighting to an altogether new part of the bike – the tires themselves. The Cyglo bike tires feature tough and durable LED bulbs that are built into the tread or wall of the tire to form a perfect ring of light when the wheel turns. Read More

Read time on a map with the Kisai Traffic watch

TokyoFlash, the maker of creative LED watches such as the "Broke" stained glass watch, the Retsu and the Round Trip Pocket Watch, is at it again. Always on the lookout for wacky new ways to display the time with LEDs, the company has just released the "Traffic" watch. Read More

Acer has unveiled a trio of eco-friendly, ultra-thin LED computer displays

A bunch of space-saving, ultra-thin LED monitors has just been announced by Acer. The trio of stylish LED displays benefit from a huge contrast range, brisk response times and a movie-friendly aspect ratio. The S1 series also has the green check-box covered with low power credentials and a manufacturing process which the company says does not use harmful substances. Read More

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