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Saturday, August 19, 2017

Low-powered LED light in the works

From Newsatlas: A new flat-panel LED light could reduce power use tremendously. Scientists at Tohoku University in Japan have made a cheaper LED lighting device in the form of a flat panel that gets efficiency of 60 lumens per watt, which is pretty darn good for their simple device that has not been tweaked. It uses nanotubes to get this kind of efficiency.

Each carbon nanotube acts similar to a cathode ray tube when a strong electric field is applied. The electric field requires 5kv to work but the device itself uses very little power.

People have been working on other ways for LEDs to use less power. Some pulse power so fast the human eye cannot detect the LED going off and on. One project is the TritiLED which aims to light a dim LED to be used as a marker, for about 10 years. There is also the Decade Flashlight.

Update Nov 2018: My Tritiled, acquired in July 2016, has been running for 2 years straight with no problem. It's never been turned off.

Review of Scientific Instruments.
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