It may be a few years before it makes its way into commercially-available phones
If you were using a smartphone projector to shine an image onto an uneven surface, or onto a flat surface but at a diagonal angle, parts of the image would end up out of focus … unless, that is, your phone featured a new prototype LED projector developed by Germany’s Fraunhofer Institute for Applied Optics and Precision Engineering. Inspired by the compound eyes of insects, the device can reportedly display crisp, bright, distortion-free visuals onto irregular surfaces, and at non-perpendicular angles. Additionally, users can manipulate that display by reaching in and touching the projection surface.
The secret to the system is that it incorporates not just one projector, but an array of 200 microprojectors. Each one of those projects the same complete image, their shots all superimposed on top of one another on the wall – or whatever surface is being used. However, each microprojector can independently adjust the focus of its image, based on how far it is from the surface. If integrated into a smartphone, the phone’s position sensor and camera could be used to provide the necessary data.
What it all boils down to is that even if the picture were being projected onto a curved surface, every part of that surface would be reflecting an image that was custom-focused to its own unique distance from the array.
via Gizmag – Ben Coxworth
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