The common LCD screen is highly inefficient. Less than 10% of the light from the backlit screen actually works its way through the various layers, with the polarizing layer alone absorbing half. Now, using optics more akin to something found in a telescope, researchers have discovered a way to reduce the wasted energy. Anna Pyayt, from the University of Washington, along with two Microsoft engineers, think they can achieve 75% efficiency. In the new display technology each pixel is comprised of two mirrors. Light from a backlit display hits the primary donut shape mirror, which then - with the help of an applied voltage - reflects the light onto a secondary mirror. The light travels back towards the first mirror and through the hole, onto the screen. The budding technology has potential to achieve wide spread consumer...
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