Virtual/augmented reality system having reverse angle diffraction grating
First Claim
1. A display subsystem for a virtual image generation system for use by an end user, comprising:
- a planar waveguide apparatus;
an optical fiber;
at least one light source configured for emitting light from a distal end of the optical fiber;
a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever, the drive assembly configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light initially diverges from a longitudinal axis coincident with the fulcrum from each of a plurality of off-axis scanning positions of the optical fiber;
an optical modulation apparatus configured for converging the emitted light from the optical fiber at each of the off-axis scanning positions towards the longitudinal axis; and
an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user.
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Accused Products
Abstract
A display subsystem for a virtual image generation system comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever. The drive assembly is configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum. The display subsystem further comprises an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis, and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to an end user.
82 Citations
20 Claims
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1. A display subsystem for a virtual image generation system for use by an end user, comprising:
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a planar waveguide apparatus; an optical fiber; at least one light source configured for emitting light from a distal end of the optical fiber; a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever, the drive assembly configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light initially diverges from a longitudinal axis coincident with the fulcrum from each of a plurality of off-axis scanning positions of the optical fiber; an optical modulation apparatus configured for converging the emitted light from the optical fiber at each of the off-axis scanning positions towards the longitudinal axis; and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A display subsystem for a virtual image generation system for use by an end user, comprising:
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a planar waveguide apparatus; an optical fiber; at least one light source configured for emitting light from a distal end of the optical fiber; a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever, the drive assembly configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum; an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis; and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to the end user, wherein the optical modulation apparatus comprises two orthogonal diffraction gratings in series, such that one of the diffraction gratings diffracts light along a first axis, and another one of the diffraction gratings diffracts light along a second axis orthogonal to the first axis.
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Specification