IP Library › Granted Patent US 12,313,852
Granted Patent B2
US 12,313,852 · App. 18/661,157 · Granted May 27, 2025

Time-multiplexed display of virtual content at various depths

Inventors: Ravi Kumar Komanduri (Austin, TX); Lionel Ernest Edwin (Hollywood, FL); Chulwoo Oh (Sammamish, WA)
Assignee: Magic Leap, Inc.
G02B27/0172G02B5/3083G02B27/4261G02B27/4272G06T19/006H04N13/279H04N13/344G02B2027/0118G02B2027/0127G02B2027/0138G02B2027/014
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Quick Facts
Patent No.
US 12,313,852
App. No.
18/661,157
Filed
May 10, 2024
Granted
May 27, 2025
Kind
B2
Art Unit
2623
USPC
345/8
Abstract

Techniques for operating an optical system are disclosed. World light may be linearly polarized along a first axis. When the optical system is operating in accordance with a first state, a polarization of the world light may be rotated by 90 degrees, the world light may be linearly polarized along a second axis perpendicular to the first axis, and zero net optical power may be applied to the world light. When the optical system is operating in accordance with a second state, virtual image light may be projected onto an eyepiece of the optical system, the world light and the virtual image light may be linearly polarized along the second axis, a polarization of the virtual image light may be rotated by 90 degrees, and non-zero net optical power may be applied to the virtual image light.

Claims (28)

1. An optical system comprising:

a projector configured to emit light;

at least one waveguide optically coupled to the projector and configured to receive and redirect light therefrom toward a user;

a shutter assembly comprising at least one component positioned adjacent to the at least one waveguide, wherein the shutter assembly is selectively switchable between different states in which the shutter assembly is configured to allow different amounts of ambient light from an environment of the user to pass therethrough toward the user, respectively;

an adaptive lens assembly positioned between the at least one waveguide and the user, wherein the adaptive lens assembly is selectively switchable between different states in which the adaptive lens assembly is configured to impart different amounts of wavefront divergence to light passing therethrough toward the user, respectively; and

control circuitry communicatively coupled to the projector, the shutter assembly, and the adaptive lens assembly, wherein the control circuitry is configured to cause the shutter assembly and the adaptive lens assembly to synchronously switch between two or more states at a particular rate, the two or more states comprising:

a first state in which the shutter assembly is configured to allow a first amount of ambient light from the environment of the user to pass therethrough toward the user and the adaptive lens assembly is configured to impart a first amount of wavefront divergence to light passing therethrough; and

a second state in which the shutter assembly is configured to allow a second amount of ambient light from the environment of the user to pass therethrough toward the user and the adaptive lens assembly is configured to impart a second amount of wavefront divergence to light passing therethrough, wherein the second amount of ambient light is different from the first amount of ambient light and the second amount of wavefront divergence is different from the first amount of wavefront divergence.

2. The optical system of claim 1 , wherein the second amount of ambient light is less than the first amount of ambient light and the second amount of wavefront divergence is greater than the first amount of wavefront divergence.

3. The optical system of claim 1 , wherein the particular rate at which to cause the shutter assembly and the adaptive lens assembly to synchronously switch between the two or more states comprises a rate greater than or equal to a minimum switching frequency.

4. The optical system of claim 1 , wherein in the second state, the control circuitry is configured to cause the projector to emit light representing virtual content that is to be perceived by the user as being positioned at a first depth in front of the user, and wherein the control circuitry is configured to determine at least one of the second amount of ambient light and the second amount of wavefront divergence based on the first depth in front of the user at which virtual content is to be perceived by the user.

5. The optical system of claim 1 , wherein the at least one component of the shutter assembly comprises at least one component positioned between the at least one waveguide and the user.

6. The optical system of claim 1 , wherein the optical system is an augmented reality (AR) device.

7. The optical system of claim 1 , wherein the at least one waveguide includes a plurality of waveguides forming an eyepiece of the optical system.

8. A method of operating an optical system, the method comprising:

emitting light at a projector;

receiving and redirecting, by at least one waveguide optically coupled to the projector, light therefrom toward a user;

selectively switching, by a shutter assembly comprising at least one component positioned adjacent to the at least one waveguide, between different states in which the shutter assembly allows different amounts of ambient light from an environment of the user to pass therethrough toward the user, respectively;

selectively switching, by an adaptive lens assembly positioned between the at least one waveguide and the user, between different states in which the adaptive lens assembly is configured to impart different amounts of wavefront divergence to light passing therethrough toward the user, respectively; and

causing, by control circuitry, the shutter assembly and the adaptive lens assembly to synchronously switch between two or more states at a particular rate, the two or more states comprising:

a first state in which the shutter assembly is configured to allow a first amount of ambient light from the environment of the user to pass therethrough toward the user and the adaptive lens assembly is configured to impart a first amount of wavefront divergence to light passing therethrough; and

a second state in which the shutter assembly is configured to allow a second amount of ambient light from the environment of the user to pass therethrough toward the user and the adaptive lens assembly is configured to impart a second amount of wavefront divergence to light passing therethrough, wherein the second amount of ambient light is different from the first amount of ambient light and the second amount of wavefront divergence is different from the first amount of wavefront divergence.

9. The method of claim 8 , wherein the second amount of ambient light is less than the first amount of ambient light and the second amount of wavefront divergence is greater than the first amount of wavefront divergence.

10. The method of claim 8 , wherein the particular rate at which to cause the shutter assembly and the adaptive lens assembly to synchronously switch between the two or more states comprises a rate greater than or equal to a minimum switching frequency.

11. The method of claim 8 , wherein in the second state, the control circuitry causes the projector to emit light representing virtual content that is to be perceived by the user as being positioned at a first depth in front of the user, and wherein the control circuitry determines at least one of the second amount of ambient light and the second amount of wavefront divergence based on the first depth in front of the user at which virtual content is to be perceived by the user.

12. The method of claim 8 , wherein the at least one component of the shutter assembly comprises at least one component positioned between the at least one waveguide and the user.

13. The method of claim 8 , wherein the optical system is an augmented reality (AR) device.

14. The method of claim 8 , wherein the at least one waveguide includes a plurality of waveguides forming an eyepiece of the optical system.

Assignments (3)
SECURITY INTEREST Recorded Oct 31, 2025
From: MAGIC LEAP, INC.; MENTOR ACQUISITION ONE, LLC; MOLECULAR IMPRINTS, INC.
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 073439/0168 →
SECURITY INTEREST Recorded Oct 24, 2025
From: MAGIC LEAP, INC.; MENTOR ACQUISITION ONE, LLC; MOLECULAR IMPRINTS, INC.
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 073255/0581 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2024
From: KOMANDURI, RAVI KUMAR; EDWIN, LIONEL ERNEST; OH, CHULWOO
To: MAGIC LEAP, INC.
Reel/Frame 067378/0115 →
Continuity (4)
Division 17370882 · Jul 8, 2021
Continuation PCTUS2020013130 · Jan 10, 2020
Provisional Application 62791441 · Jan 11, 2019
Related Publication 20240295739A1 · Sep 5, 2024
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