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Title:
Voxel-based spatial display
Authors:
MacFarlane, Duncan L.; Schultz, George R.; Higley, Paul D.; Meyer, Jon
Affiliation:
AA(University of Texas/Dallas and Ctr. for Applied Optics), AB(Specialty Devices Inc)
Publication:
Proc. SPIE Vol. 2177, p. 196-202, Stereoscopic Displays and Virtual Reality Systems, Scott S. Fisher; John O. Merritt; Mark T. Bolas; Eds. (SPIE Homepage)
Publication Date:
04/1994
Origin:
SPIE
Bibliographic Code:
1994SPIE.2177..196M

Abstract

We describe a 3-D monitor for the direct display of 3-D information. The general concept for this volumetric display is a fairly straightforward extension of a 2-D screen composed of an array of picture-elements, or `pixels.' Here, a 3-D stack of pixels (actually, volume-elements, or `voxels') that, when off, are completely transparent. When addressed, a voxel becomes optically active and emits light. In this way, a 3-D pattern may be directly built up from a set of activated voxels. In our prototypes built to date, we have made the voxels from a nugget of UV-curved optical resin doped with an organic dye. The void between voxels is filled with an index matching fluid formulated to eliminate ghost images due to Fresnel reflections off the voxel surfaces. Each voxel is addressed by an optical fiber that pipes light to the voxel. This optical energy pumps the embedded dye causing it to fluoresce at an appropriate color that depends on the choice of dye. The fibers emerge from the 3-D array of voxels and are addressed using a flat array of liquid crystals.
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