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Projector in a fist

25.11.2006

German engineers have almost assembled a projector the size of a sugar cube. Current projectors, which allow the presenter to show files with graphics and pictures on a large screen, have two drawbacks: large size and considerable price. The reason is that the heart of the projector is an array of millions of micromirrors that form the image using a powerful lamp.

Scientists from the Fraunhofer Institute for Applied Optics and Precision Mechanics (Germany) proved that both disadvantages can be overcome by designing a projector that is slightly larger than a one euro coin. This mini-projector does not have a million mirrors, but a single one, but capable of rotating in two planes. The light source is semiconductor microlasers, like those used in pointers. These are the lasers that do not allow you to make the projector very small.

The fact is that while the blue and red lasers have already "reduced" to the required size, such a transformation has not yet been possible with the green one, despite the many years of efforts by scientists around the world. And when luck finally smiles on them, then there will be unprecedented devices like a cell phone, capable of receiving a TV program and independently displaying an image on a large screen.

Well, the speaker will be relieved of the problems of docking with the equipment of the host: his own laptop will show everything. At its best.

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