NZ755268B2 - Virtual and augmented reality systems and methods - Google Patents
Virtual and augmented reality systems and methodsInfo
- Publication number
- NZ755268B2 NZ755268B2 NZ755268A NZ75526814A NZ755268B2 NZ 755268 B2 NZ755268 B2 NZ 755268B2 NZ 755268 A NZ755268 A NZ 755268A NZ 75526814 A NZ75526814 A NZ 75526814A NZ 755268 B2 NZ755268 B2 NZ 755268B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- waveguide
- light
- image data
- user
- waveguide component
- Prior art date
Links
- 230000003190 augmentative effect Effects 0.000 title description 2
- 239000000758 substrate Substances 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
Classifications
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Abstract
Disclosed is a system for displaying virtual content to a user. The system includes an image-generating source, a light source, a waveguide assembly and one or more variable focusing elements optically coupled to the waveguide assembly. The image-generating source provides one or more frames of image data in a time-sequential manner. The light source projects light associated with the one or more frames of image data. The waveguide assembly receives the light and delivers the light towards at least one eye of a user with multiple wavefront curvatures for a focus level corresponding to a focal distance. The waveguide assembly comprises at least a first waveguide component operatively coupled to a first weak lens to modify first light associated with a first frame of the image data such that the light is perceived as coming from a first focal plane, and a second waveguide component operatively couples to a second weak lens to modify second light associated with a second frame of the image data such that the second light is perceived as coming from a second focal plane. The first waveguide component and the second waveguide component sandwich the first weak lens or the second weak lens and are stacked along a thickness direction in which respective thicknesses of the first and second waveguide components are defined. e data in a time-sequential manner. The light source projects light associated with the one or more frames of image data. The waveguide assembly receives the light and delivers the light towards at least one eye of a user with multiple wavefront curvatures for a focus level corresponding to a focal distance. The waveguide assembly comprises at least a first waveguide component operatively coupled to a first weak lens to modify first light associated with a first frame of the image data such that the light is perceived as coming from a first focal plane, and a second waveguide component operatively couples to a second weak lens to modify second light associated with a second frame of the image data such that the second light is perceived as coming from a second focal plane. The first waveguide component and the second waveguide component sandwich the first weak lens or the second weak lens and are stacked along a thickness direction in which respective thicknesses of the first and second waveguide components are defined.
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 to a
user, comprising: an image-generating source to provide one or more frames of image data in a
time-sequential manner; a light source to project light associated with the one or more frames of
image data; a waveguide assembly to receive the light and deliver the light towards at least one eye
of a user with multiple wavefront curvatures for a focus level corresponding to a focal distance,
wherein the waveguide assembly comprises at least a first waveguide component operatively
coupled to a first weak lens to modify first light associated with a first frame of the image data such
that the light is perceived as coming from a first focal plane, and a second waveguide component
operatively couples to a second weak lens to modify second light associated with a second frame of
the image data such that the second light is perceived as coming from a second focal plane, and
wherein the first waveguide component and the second waveguide component sandwich the first
weak lens or the second weak lens and are stacked along a thickness direction in which respective
thicknesses of the first and second waveguide components are defined; and one or more variable
focusing elements optically coupled to the waveguide assembly.
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 (19)
1. A system for displaying virtual content to a user, comprising: an image-generating source to provide one or more frames of image data in a time-sequential manner; a light source to project light associated with the one or more frames of image data; a waveguide assembly to receive the light and deliver the light towards at least one eye of a user with multiple wavefront curvatures for a focus level corresponding to a focal distance, wherein the waveguide assembly comprises at least a first waveguide component operatively coupled to a first weak lens to modify first light associated with a first frame of the image data such that the light is perceived as coming from a first focal plane, and a second waveguide component operatively couples to a second weak lens to modify second light associated with a second frame of the image data such that the second light is perceived as coming from a second focal plane, and wherein the first waveguide component and the second waveguide component sandwich the first weak lens or the second weak lens and are stacked along a thickness direction in which respective thicknesses of the first and second waveguide components are defined; and one or more variable focusing elements optically coupled to the waveguide assembly.
2. The system of claim 1, wherein the first waveguide component is configured to distribute the first light across a length of the first waveguide component, and the waveguide assembly further comprises a lens to modify the light in a manner such that a wavefront curvature is created, wherein the created wavefront curvature corresponds to a focal plane when viewed by the user.
3. The system of claim 1 or 2, wherein the waveguide assembly comprises a diffractive optical element (DOE).
4. The system of claim 3, wherein the DOE is switchable between an on and off state.
5. The system of any one of claims 1 to 4, wherein the waveguide assembly comprises a refractive lens.
6. The system of any one of claims 1 to 5, wherein the waveguide assembly comprises a Fresnel zone plate.
7. The system of any one of claims 1 to 6, wherein the waveguide assembly comprises a substrate guided optics (SGO) element.
8. The system of any one of claims 1 to 7, wherein the first waveguide component or the second waveguide component is switchable between an on and off state.
9. The system of any one of claims 1 to 7, wherein the waveguide assembly comprises static diffractive elements or lenses.
10. The system of any one of claims 1 to 9, wherein the first frame of image data and second frame of image data are delivered to the at least one eye of the user simultaneously.
11. The system of any one of claims 1 to 9, wherein the first frame of image data and second frame of image data are delivered to the at least one eye of the user sequentially.
12. The system of any one of claims 1 to 11, further comprising a plurality of angled reflectors to deliver light to the at least one eye of the user, wherein the first waveguide component and the second waveguide component direct light to the one or more angled reflectors.
13. The system of any one of claims 1 to 12, further comprising a beam distribution waveguide optic, the beam distribution waveguide optic coupled to the waveguide assembly, wherein the beam distribution waveguide optic is configured to spread the light across the waveguide assembly, such that a light ray injected into the beam distribution waveguide optic is cloned and injected into waveguide components of the waveguide assembly.
14. The system of claim 1, wherein a waveguide component of the waveguide assembly comprises a reflector configurable to reflect the projected light at a desired angle toward the user's eye.
15. The system of any one of claims 1 to 13, wherein the first waveguide component comprises a first reflector configured to reflect the light at a first angle, and wherein the second waveguide component comprises a second reflector configured to reflect the light at a second angle.
16. The system of any one of claims 1 to 15, wherein the first reflector is staggered in relation to the second reflector, thereby expanding a field of view of the image as viewed by the user.
17. The system of any one of claims 1 to 15, wherein the first reflector and the second reflector are positioned in a manner to form a continuous curved reflection surface across the waveguide assembly.
18. The system of claim 17, wherein the continuous curved reflection surface comprises a parabolic curve.
19. The system of claim 17, wherein the continuous curved reflection surface comprises an elliptical curve.
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)
Publication Number | Publication Date |
---|---|
NZ755268A NZ755268A (en) | 2021-06-25 |
NZ755268B2 true NZ755268B2 (en) | 2021-09-28 |
Family
ID=
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