Half a croissant, on a plate, with a sign in front of it saying '50c'
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There goes my teleportation concept.

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polyhedral crystal display

surface display with polyhedral crystals and shine lasers on them
 
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This 3-D (like a window) display has a huge array of many, many, many tiny lasers behind it. Here's how it works:

Each crystal on the surface will vector light in many, predictable directions depending on where the light is coming from. To show a 2-D display one would shine light such that all of each pixel/crystal have the same color on all facets. To show a 3-D display, like a window, the color shown on facets the same direction show one image. A facet, say, half a degree off show a slightly different image.

By refracting three lasers in each facet of each crystal you'll have a clear, bright, three dimensional display.

Voice, Oct 18 2011

Like this http://en.wikipedia...ki/Parallax_barrier
but with 358x358 barriers [Voice, Oct 18 2011]

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