Scarlett Johansen Legs

Glasses that change from graduation with a button and motion sensors

electronic goggles, according to their developers change their graduation with a button and motion sensors.

* Use an electric current that allows the crystals change the focal length.
* The goal, 'Jubilee' progressive lenses.
* May go on sale in Europe in 2011.

met a few months ago the existence of novel assays with glasses that allowed to improve or change its focal length by simply touching them. How do they work? The developer is the U.S. company PixelOptics, a company that began a decade ago to develop them and, back in February, a controlled test of the performance of these glasses (which operates explained in this PDF ), which apparently do not differ none of the conventional and try to become the progressive lens market. It will on sale this year in the U.S. and in 2011 is expected to begin shipping in Europe.

The novelty is that graduation may change thanks to a small electrical current. A thin layer of liquid crystal in the center of each lens, can alter the properties of these and the degree of refraction, depending on the amount of power received, and thus alter the focal length to each situation.

To generate this power, the frames are built of a button and motion sensors, allowing changing focal length is determined by the user or the lenses themselves, depending on the movements of the head.

"These liquid crystals can change its focal length by a small electric current passes through them (...) do so in the blink of an eye time, so do not feel the dizziness of the traditional progressive glasses "Telegraph explains, the director of PixelOptics in Europe, Peter Zieman, who share the motion sensors of these lenses with employees, for example, in the iPhone. "The glasses, in essence, have not changed much since it was invented, ours will involve a new concept, especially for people who use more progressive than adults are aged from 45 years," he concludes.