DYNAMIC APERTURED WAVEGUIDE FOR NEAR-EYE DISPLAY
First Claim
1. A waveguide system for a near-eye display comprisinga transmissive waveguide for conveying image information in the form of a plurality of different angle beams for forming a virtual image,an input aperture for receiving the plurality of different angle beams and for directing the plurality of different angle beams along the transmissive waveguide,a controllable output aperture for ejecting the plurality of different angle beams from the waveguide toward an eyebox from which the virtual image can be viewed and for providing a view of an ambient environment from the eyebox through the controllable output aperture and the waveguide, andthe controllable output aperture including a transformable diffraction grating that is switchable between a first state for diffracting the plurality of different angle beams from the waveguide toward the eyebox from which the virtual image can be viewed and a second state for restoring the view of the ambient environment from the eyebox through the controllable output aperture and the waveguide.
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Abstract
A near-eye display of a type having an image generator for generating a succession of angularly related beams and waveguide for propagating the angularly related beams to an eyebox within which a virtual image is visible includes a controllable output aperture for such purposes as reconstructing a better defined pupil within the eyebox while also preserving the possibility for viewing the ambient environment from the eyebox through the controllable output aperture.
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Citations
16 Claims
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1. A waveguide system for a near-eye display comprising
a transmissive waveguide for conveying image information in the form of a plurality of different angle beams for forming a virtual image, an input aperture for receiving the plurality of different angle beams and for directing the plurality of different angle beams along the transmissive waveguide, a controllable output aperture for ejecting the plurality of different angle beams from the waveguide toward an eyebox from which the virtual image can be viewed and for providing a view of an ambient environment from the eyebox through the controllable output aperture and the waveguide, and the controllable output aperture including a transformable diffraction grating that is switchable between a first state for diffracting the plurality of different angle beams from the waveguide toward the eyebox from which the virtual image can be viewed and a second state for restoring the view of the ambient environment from the eyebox through the controllable output aperture and the waveguide.
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9. A near-eye display comprising:
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an image generator for generating a succession of angularly related beams, a waveguide for propagating the succession of angularly related beams having an input aperture for receiving the succession of angularly related beams from the image generator and a controllable output aperture or ejecting the angularly related beams from the waveguide toward an eyebox, and the controllable output aperture having a plurality of independently controllable sections, and a controller that synchronizes the image generator with the controllable output aperture for ejecting different angularly related beams from different sections of the controllable output aperture for overlapping the angularly related beams within the eyebox. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification