NZ755270B2 - Virtual and augmented reality systems and methods - Google Patents

Virtual and augmented reality systems and methods

Info

Publication number
NZ755270B2
NZ755270B2 NZ755270A NZ75527014A NZ755270B2 NZ 755270 B2 NZ755270 B2 NZ 755270B2 NZ 755270 A NZ755270 A NZ 755270A NZ 75527014 A NZ75527014 A NZ 75527014A NZ 755270 B2 NZ755270 B2 NZ 755270B2
Authority
NZ
New Zealand
Prior art keywords
light rays
user
waveguide
eye
bit depth
Prior art date
Application number
NZ755270A
Other versions
NZ755270A (en
Inventor
Brian Schowengerdt
Original Assignee
Magic Leap Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magic Leap Inc filed Critical Magic Leap Inc
Priority claimed from NZ720610A external-priority patent/NZ720610A/en
Publication of NZ755270A publication Critical patent/NZ755270A/en
Publication of NZ755270B2 publication Critical patent/NZ755270B2/en

Links

Classifications

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Abstract

Disclosed is a system for displaying virtual content to a user. The system includes a plurality of waveguides to receive light rays associated with image data and to transmit the light rays toward the user's eyes, a first lens coupled to a first waveguide of the plurality of waveguides, a second lens coupled to a second waveguide of the plurality of waveguides, and a combined volumetric display subsystem including the first lens, the first waveguide, the second lens, and the second waveguide. The plurality of waveguides are stacked about a direction pointing to at least one eye of the user. The first lens modifies light rays transmitted from the first waveguide, thereby delivering first light rays having a first wavefront curvature and a first bit depth to the at least one eye of the user. The second lens modifies light rays transmitted from the second waveguide, thereby delivering second light rays having a second wavefront curvature and a second bit depth to the at least one eye of the user. The first bit depth is lower than the second bit depth. The combined volumetric display subsystem is configured to project light rays that have a variable wavefront curvature and a higher bit depth than the first bit depth and a higher frame rate than a lower frame rate at which the first light rays or the second light rays are presented. s coupled to a second waveguide of the plurality of waveguides, and a combined volumetric display subsystem including the first lens, the first waveguide, the second lens, and the second waveguide. The plurality of waveguides are stacked about a direction pointing to at least one eye of the user. The first lens modifies light rays transmitted from the first waveguide, thereby delivering first light rays having a first wavefront curvature and a first bit depth to the at least one eye of the user. The second lens modifies light rays transmitted from the second waveguide, thereby delivering second light rays having a second wavefront curvature and a second bit depth to the at least one eye of the user. The first bit depth is lower than the second bit depth. The combined volumetric display subsystem is configured to project light rays that have a variable wavefront curvature and a higher bit depth than the first bit depth and a higher frame rate than a lower frame rate at which the first light rays or the second light rays are presented.

Description

In one embodiment, a system of displaying virtual content to a user, comprises an image-generating source to provide one or more frames of image data, a multicore assembly comprising a plurality of multicore fibers to project light associated with the one or more frames of image data, a multicore fiber of the plurality of multicore fibers emitting light in a wavefront, such that the multicore assembly produces an aggregate wavefront of the projected light, and a phase modulator to induce phase delays between the multicore fibers in a manner such that the aggregate wavefront emitted by the multicore assembly is varied, thereby varying a focal distance at which the user perceives the one or more frames of image data.
In another embodiment, a system for displaying virtual content to a user comprises an array of microprojectors to project light beams associated with one or more frames of image data to be presented to the user, wherein the microprojector is configurable to be movable relative to one or more microprojectors of the array of the microprojectors, a frame to house the array of microprojectors, a processor operatively coupled to the one or more microprojectors of the array of microprojectors to control one or more light beams transmitted from the one or more projectors in a manner such that the one or more light beams are modulated as a function of a position of the one or more microprojectors relative to the array of microprojectors, thereby enabling delivery of a lightfield image to the user. [00265A] In another embodiment, there is provided a system for displaying virtual content.
The system comprises: a plurality of waveguides to receive light rays associated with image data and to transmit the light rays toward the user's eyes, wherein the plurality of waveguides are stacked about a direction pointing to at least one eye of the user; a first lens coupled to a first waveguide of the plurality of waveguides to modify light rays transmitted from the first waveguide, thereby delivering first light rays having a first wavefront curvature and a first bit depth to the at least one eye of the user; a second lens coupled to a second waveguide of the plurality of waveguides to modify light rays transmitted from the second waveguide, thereby delivering second light rays having a second wavefront curvature and a second bit depth to the at least one eye of the user; and a combined volumetric display subsystem including the first lens, the first waveguide, the second lens, and the second waveguide and configured to project, to the at least one eye of the user, light rays that have a variable wavefront curvature and a higher bit depth than the first bit depth and a higher frame rate than a lower frame rate at which the first light rays or the second light rays are presented, and wherein the first bit depth is lower than the second bit depth.
Additional and other objects, features, and advantages of the invention are described in the detail description, figures and claims.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 illustrates a user's view of augmented reality (AR) through a wearable AR user device, in one illustrated embodiment.
Figs. 2A-2E illustrate various embodiments of wearable AR devices.
Fig. 3 illustrates a cross-sectional view of the human eye, in one illustrated embodiment.
Figs. 4A -4D illustrate one or more embodiments of various internal processing components of the wearable AR device.
Figs. 5A-5H illustrate embodiments of transmitting focused light to a user through a transmissive beamsplitter substrate.
Figs. 6A and 6B illustrate embodiments of coupling a lens element with the transmissive beamsplitter substrate of Figs. 5A-5H.
Figs. 7A and 7B illustrate embodiments of using one or more waveguides to transmit light to a user.
Figs. 8A-8Q illustrate embodiments of a diffractive optical element (DOE).

Claims (12)

The claims defining the invention are as follows:
1. A system for displaying virtual content to a user, comprising: a plurality of waveguides to receive light rays associated with image data and to transmit the light rays toward the user's eyes, wherein the plurality of waveguides are stacked about a direction pointing to at least one eye of the user; a first lens coupled to a first waveguide of the plurality of waveguides to modify light rays transmitted from the first waveguide, thereby delivering first light rays having a first wavefront curvature and a first bit depth to the at least one eye of the user; a second lens coupled to a second waveguide of the plurality of waveguides to modify light rays transmitted from the second waveguide, thereby delivering second light rays having a second wavefront curvature and a second bit depth to the at least one eye of the user; and a combined volumetric display subsystem including the first lens, the first waveguide, the second lens, and the second waveguide and configured to project, to the at least one eye of the user, light rays that have a variable wavefront curvature and a higher bit depth than the first bit depth and a higher frame rate than a lower frame rate at which the first light rays or the second light rays are presented, and wherein the first bit depth is lower than the second bit depth.
2. The system of claim 1, further comprising a third waveguide of the plurality of waveguides to deliver collimated light to the at least one eye of the user, such that the user perceives the image data as coming from an optical infinity plane and producing three-dimensional perception with a combination of at least the first light rays and the second light rays respectively sent to the at least one eye of the user.
3. The system of claim 1 or 2, wherein the first waveguide is configured to transmit collimated light to the first lens.
4. The system of any one of claims 1 to 3, further comprising a compensating lens layer to compensate for an aggregate power of the lenses stacked in the direction facing the at least one eye of the user, wherein the compensating lens layer is stacked farthest from the at least one eye of the user.
5. The system of any one of claims 1 to 4, wherein the plurality of waveguides comprise a plurality of reflectors configured to reflect the first light rays injected into the first waveguide toward the at least one eye of the user.
6. The system of any one of claims 1 to 5, wherein at least one of the first waveguide and the second waveguide is electro-active.
7. The system of any one of claims 1 to 6, wherein at least one of the first waveguide and the second waveguide includes diffractive elements that are switchable.
8. The system of any one of claims 1 to 7, wherein the first light rays having the first wavefront curvature and the second light rays having the second wavefront curvature are delivered simultaneously to the at least one eye of the user.
9. The system of any one of claims 1 to 7, wherein the first light rays having the first wavefront curvature and the second light rays having the second wavefront curvature are delivered sequentially to the at least one eye of the user.
10. The system of claim 8, wherein the second wavefront curvature corresponds to a margin of the first wavefront curvature, thereby providing a focal range in which the user accommodates.
11. The system of any one of claims 1 to 10, further comprising an accommodation module configured to track an accommodation of the at least one eye of the user, wherein a variable focus element varies the focal distance of light patterns based at least in part on the accommodation of the at least one eye of the user.
12. The system of any one of claims 1 to 11, wherein the second lens is configured to create a convex wavefront curvature for the second wavefront curvature.
NZ755270A 2013-11-27 2014-11-27 Virtual and augmented reality systems and methods NZ755270B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361909774P 2013-11-27 2013-11-27
US61/909,774 2013-11-27
NZ720610A NZ720610A (en) 2013-11-27 2014-11-27 Virtual and augmented reality systems and methods

Publications (2)

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NZ755270A NZ755270A (en) 2021-06-25
NZ755270B2 true NZ755270B2 (en) 2021-09-28

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