Join Date: May 2000
Location: Walnut, CA, USA
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The article is a bit brief on how the light is spread over the planar acrylic. I don't quite get it.
A few years ago, I remember seeing an article in Popular Science that was similar but easier to see how it works. You take a bundle of two million fiber optic strands, one per pixel. This had a flat cross section of rectangular shape that was relatively small -- say 4" x 3". You project onto it. the other ends of the fibers are arranged behind a glass or acrylic plate -- but spaced out behind microlenses such that they "project" a pixel that is larger than the fiber. End result is an image whose size is related to very slight changes in distance from microlense to faceplate. The length of the fiber optic strands is just long enough to reach the proper position behind the faceplate, and has nothing to do with "throw". And the fiber is flexible and can snake its way in from the side, bottom or wherever. So the end result was a display device a few inches thick.
This was purely a conceptual article. No working demonstration. I have no idea if anyone is actually working on it. But I think the basic idea is the same as this planar device -- the light-pipe spreads the image and it is not necessary to have a projector form the image long-and-skinny.
Of course, 20 million feet of fiber optic cable seems like it might be expensive !
[This message has been edited by dreamer (edited 01-04-2001).]