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A Projector Smaller than a Credit Card

Written on September 15, 2010 by Charles Bass

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You would have thought to make a projector the size of the thumb? Genius, indeed.

A device from the Ecole Polytechnique Federale de Lausanne (EPFL) shows a product called Lemoptix that has a projection head with the size of one centimeter cube and smaller that the regular credit card.

It can be integrated in a laptop, mobile phone and even on MP3 player. The size of the image is adjusted by modifying the distance between the beamer and the projection surface. It works on a 30% less current than Led or Matrix projectors. The distance is atleast 50 cm and the images can be viewed on a 15 inch screen.

“This micro-projector functions using tiny mirrors of less than a millimeter’s thickness. Positioned on a silicon (wafer) disc, they reflect red, blue and green laser beams,” says EPFL research director Maher Kayal.

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