Three dimensional virtual and augmented reality display system
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United States of America Patent
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Oct 18, 2022
Grant Date -
Jul 23, 2020
app pub date -
Apr 9, 2020
filing date -
Nov 23, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A system may comprise a selectively transparent projection device for projecting an image toward an eye of a viewer from a projection device position in space relative to the eye of the viewer, the projection device being capable of assuming a substantially transparent state when no image is projected; an occlusion mask device coupled to the projection device and configured to selectively block light traveling toward the eye from one or more positions opposite of the projection device from the eye of the viewer in an occluding pattern correlated with the image projected by the projection device; and a zone plate diffraction patterning device interposed between the eye of the viewer and the projection device and configured to cause light from the projection device to pass through a diffraction pattern having a selectable geometry as it travels to the eye.
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