VIRTUAL IMAGE DEVICE
First Claim
Patent Images
1. A virtual image device comprising:
- a projector configured to output light rays;
a lens configured to receive the light rays from the projector and to generate a virtual image; and
two diffraction gratings, positioned proximate the lens, to increase a field-of-view of the virtual image, the two diffraction gratings substantially orthogonally-oriented to each other.
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0 Petitions
Accused Products
Abstract
This document describes various apparatuses embodying, and techniques for implementing, a virtual image device. The virtual image device includes a projector and a lens configured to generate a virtual image as well as two diffraction gratings, substantially orthogonally-oriented to each other, that act to increase a field-of-view of the virtual image. The virtual image device can be implemented as a pair of eyeglasses and controlled to generate the virtual image in front of lenses of the eyeglasses so that a wearer of the eyeglasses, looking through the lenses of the eyeglasses, sees the virtual image.
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Citations
20 Claims
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1. A virtual image device comprising:
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a projector configured to output light rays; a lens configured to receive the light rays from the projector and to generate a virtual image; and two diffraction gratings, positioned proximate the lens, to increase a field-of-view of the virtual image, the two diffraction gratings substantially orthogonally-oriented to each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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receiving data corresponding to a virtual image; receiving positions of pupils of a viewer; and controlling a projector to inject light rays into a lens positioned proximate two liquid crystal diffraction gratings, substantially orthogonally-oriented to each other, effective to generate the virtual image with a wide field-of-view based on the positions of the pupils of the viewer. - View Dependent Claims (14, 15, 16)
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17. A head-mounted display device comprising:
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a pupil tracker configured to locate a position of a first pupil and a position of a second pupil of a wearer of the head-mounted display device; a first projector configured to inject light rays into a first wedge light guide effective to generate a first virtual image based on the position of the first pupil; a second projector configured to inject light rays corresponding to the virtual image into a second wedge light guide effective to generate a second virtual image based on the position of the second pupil; two liquid crystal diffraction gratings, substantially orthogonally-oriented to each other, comprising; a horizontal liquid crystal diffraction grating configured to increase a vertical field-of-view of the first virtual image and the second virtual image; and a vertical liquid crystal diffraction grating configured to increase a horizontal field-of-view of the first virtual image and the second virtual image. - View Dependent Claims (18, 19, 20)
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Specification