Hi. The Sony prototype has been covered here recently. Its still a physical moving screen, and more importantly has no vertical parallax (ie, you cant change the view by looking from above or below). This is really just a toy version of what Cspace could do.
The NASA proposal is pretty much what Cspace is trying to do as well. (As well as 3DTL). Whomever successfully develops the material on which the light is projected first, wins, imo.
The have a completely different approach to the problem. Whereas 3dicon is looking for a chemistry/material solution, xigen is using a physical layout approach.
"Within a block of glass, a large amount of tiny dots of voxels are created by using a recently available machining technique called laser subsurface engraving (LSE). The LSE is able to produce tiny physical crack points (as small as 0.05 mm in diameter) at any (x,y,z) location within the cube of transparent material. The crack dots, when illuminated by a light source, scatter the light around and form visible voxels within the 3D volume. The locations of these tiny voxels are strategically determined such that each can be illuminated by a light ray from a high-resolution digital mirror device (DMD) light engine. The distribution of these voxels occupies the full display volume within the static 3D glass screen. This design eliminates any moving screen seen in previous approaches, so there is no image jitter, and has an inherent parallel mechanism for 3D voxel addressing. High spatial resolution is possible with a full color display being easy to implement. The system is low-cost and low-maintenance."
Thats interesting. Though Im highly confused how they could place enough of these cracks to fill the volume and *not* obscure each other. Has anyone downloaded the brief??
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