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US 7,604,354 B1Granted
Three-dimensional projection apparatus using coaxial optical alignment
OwnerThomas R. Ligoninventor
Life of this patent
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Abstract
A projection apparatus comprising a three-dimensional screen, a convex mirror, two or more projectors, and an assemblage of flat mirrored surfaces that share at least one common edge or apex that faces the convex mirror. The flat mirrored surfaces fold the images from separate projectors into a common image that has single optical axis aligned with principal axis of the convex mirror so that the combined image is reflected from the convex mirror onto the three dimensional screen.
Claims20
A projection display apparatus comprising:
- a screen having an inner surface substantially enclosing a three-dimensional space;
- a mirror assemblage further comprising a first reflective face and a second reflective face, with said reflective faces sharing an apex edge;
- a first projector for projecting a first image onto said first reflective face such that said first image is folded, said first projector being capable of focusing so that said first image is rendered in sharp focus on said inner surface;
- a second projector for projecting a second image onto said second reflective face such that said second image is folded, said second projector being capable of focusing so that said second image is rendered in sharp focus on said inner surface;
- a convex mirror positioned within said three-dimensional space to receive the first image and second image folded by said mirror assemblage and to disperse said images onto the inner surface of said screen.
2 more elements
A projection display apparatus comprising:
- a screen having an inner surface substantially enclosing a three-dimensional space;
- a mirror assemblage further comprising a first reflective face, a second reflective face, and a third reflective face, with said reflective faces sharing a common apex;
- a first projector for projecting a first image onto said first reflective face such that said first image is folded, said first projector being capable of focusing so that said first image is rendered in sharp focus on said inner surface;
- a second projector for projecting a second image onto said second reflective face such that said second image is folded, said second projector being capable of focusing so that said second image is rendered in sharp focus on said inner surface;
- a third projector for projecting a third image onto said third reflective face such that said third image is folded, said third projector being capable of focusing so that said third image is rendered in sharp focus on said inner surface;
- a convex mirror positioned within said three-dimensional space to receive the first image, second image, and third image folded by said mirror assemblage and to disperse said images onto the inner surface of said screen.
3 more elements
A projection display apparatus comprising:
- a screen having an inner surface substantially enclosing a three-dimensional space;
- a mirror assemblage further comprising a first reflective face, a second reflective face, a third reflective face, and a fourth reflective face with said reflective faces sharing a common apex;
- a first projector for projecting a first image onto said first reflective face such that said first image is folded, said first projector being capable of focusing so that said first image is rendered in sharp focus on said inner surface;
- a second projector for projecting a second image onto said second reflective face such that said second image is folded, said second projector being capable of focusing so that said second image is rendered in sharp focus on said inner surface;
- a third projector for projecting a third image onto said third reflective face such that said third image is folded, said third projector being capable of focusing so that said third image is rendered in sharp focus on said inner surface;
- a fourth projector for projecting a fourth image onto said fourth reflective face such that said third image is folded, said fourth projector being capable of focusing so that said fourth image is rendered in sharp focus on said inner surface;
- a convex mirror positioned within said three-dimensional space to receive the first image, second image, third image, and fourth image folded by said mirror assemblage and to disperse said images onto the inner surface of said screen.
4 more elements
Dependencies are inferred from the claim text.