Retroreflective light field display
First Claim
Patent Images
1. A projected head mounted display system comprising:
- a head mounted frame including at least one image projector arranged to project images out of and forward away from, said frame, said projector or projectors having an adjustable projected focal plane distance;
at least one controller to vary the focal plane distance of an image scene in a sequence selected to simulate a light field for projected images reflected back from a retroreflective screen or retroreflective surface; and
a retroreflective screen or retroreflective surface having an effectively high ratio of retroreflected rays to diffused reflected rays so as to return to the eyes of the wearer of said projected head mounted display system, said projected images from said forward projecting image projector or projectors over said adjustable focal plane distance range of said image scene;
wherein said head mounted display further comprises a tracking module to track the movement and position of a user and provide tracking data to a computing element to produce computer generated images (CGI) of objects having positions or perceived focal plane distances aligned with one or more real objects in view of the user;
wherein each of said at least one image projectors comprises an electrically adjustable optical element to modulate the focal plane distances through a sequence that matches the visual distances of the generated image to the user at a rate sufficient to merge images in the visual perception of the user to simulate a light field.
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Abstract
A projected head mounted display system is disclosed that projects images onto a retroreflective screen, which are then reflected back for view by a user. The projected head mounted display system displays computer generated images at multiple focal distances to simulate a light field so as to match eye accommodation to vergence.
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Citations
19 Claims
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1. A projected head mounted display system comprising:
a head mounted frame including at least one image projector arranged to project images out of and forward away from, said frame, said projector or projectors having an adjustable projected focal plane distance;
at least one controller to vary the focal plane distance of an image scene in a sequence selected to simulate a light field for projected images reflected back from a retroreflective screen or retroreflective surface; and
a retroreflective screen or retroreflective surface having an effectively high ratio of retroreflected rays to diffused reflected rays so as to return to the eyes of the wearer of said projected head mounted display system, said projected images from said forward projecting image projector or projectors over said adjustable focal plane distance range of said image scene;
wherein said head mounted display further comprises a tracking module to track the movement and position of a user and provide tracking data to a computing element to produce computer generated images (CGI) of objects having positions or perceived focal plane distances aligned with one or more real objects in view of the user;
wherein each of said at least one image projectors comprises an electrically adjustable optical element to modulate the focal plane distances through a sequence that matches the visual distances of the generated image to the user at a rate sufficient to merge images in the visual perception of the user to simulate a light field.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of displaying visual images with a plurality of focal planes comprising:
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a) providing a head mounted frame with one or more image projectors arranged to project images out of and forward away from, said frame, said projector or projectors having an electrically adjustable focal plane distance of projected images; b) providing a retroreflective screen or retroreflective surface, said retroreflective screen or retroreflective surface having an effectively high ratio of retroreflected rays to diffused reflected rays so as to display images over said adjustable focal plane distance, by return of projected images from said image projectors to the eyes of a user; c) tracking the movement and position of a user and providing tracking data to a computing element to produce computer generated images (CGI) of objects having positions or perceived focal plane distances aligned with one or more real objects in view of the user; and d) stepping the focal plane distances through a sequence that matches the visual distances of the generated image to the user at a rate sufficient to merge images in the visual perception of the user to simulate a light field. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification