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Category: Gadgets

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- 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.

“The micro-components used can be manufactured in thousands, even tens of thousands, at low cost,” says Nicolas Abelé, Lemoptix technical director.

The applications are quite industrial. It could be used by automobile manufacturers to give information directly on the windshield.

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