Optics: image projectors – Stereoscopic
Reexamination Certificate
2005-08-30
2009-02-17
Lee, Diane I (Department: 2851)
Optics: image projectors
Stereoscopic
C353S033000, C353S081000, C353S050000, C353S122000, C359S014000, C359S015000, C359S023000, C349S030000
Reexamination Certificate
active
07490941
ABSTRACT:
The present invention relates to a three-dimensional (3D) hologram display system. The 3D hologram display system includes a projector device for projecting an image upon a display medium to form a 3D hologram. The 3D hologram is formed such that a viewer can view the holographic image from multiple angles up to 360 degrees. Multiple display media are described, namely a spinning diffusive screen, a circular diffuser screen, and an aerogel. The spinning diffusive screen utilizes spatial light modulators to control the image such that the 3D image is displayed on the rotating screen in a time-multiplexing manner. The circular diffuser screen includes multiple, simultaneously-operated projectors to project the image onto the circular diffuser screen from a plurality of locations, thereby forming the 3D image. The aerogel can use the projection device described as applicable to either the spinning diffusive screen or the circular diffuser screen.
REFERENCES:
patent: 6195184 (2001-02-01), Chao et al.
patent: 6844948 (2005-01-01), Lieberman
Bryant Nevin
Chao Tien-Hsin
Mintz Frederick
Tsou Peter
California Institute of Technology
Cruz Magda
Lee Diane I
Tope-McKay & Associates
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