# US 2025/0164818 A1 · Methods and systems for augmented reality display with dynamic field of view

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- Number: US 2025/0164818 A1
- Document ID: US20250164818A1
- Status: Published application
- Kind: A1
- Application number: 19/028,036
- Filed: 2025-01-17
- Published: 2025-05-22
- Earliest claimed: 2019-07-12
- Assignees: Magic Leap, Inc.
- Applicants: Magic Leap, Inc.
- Inventors: Chieh Chang; Victor Kai Liu; Samarth Bhargava; Ling Li; Sharad D. Bhagat; Christophe Peroz; Jason Donald Mareno
- Web page: https://patentgrep.com/patent/US20250164818A1

## CPC

- G02B 30/52: the three-dimensional [3D] volume being constructed from a stack or sequence of two-dimensional [2D] planes, e.g. depth sampling systems
- G02B 27/0075: {with means for altering, e.g. increasing, the depth of field or depth of focus}
- G02B 27/0081: {with means for altering, e.g. enlarging, the entrance or exit pupil}
- G02B 27/0172: {characterised by optical features}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A foveated display for projecting an image to an eye of a viewer is provided. The foveated display includes a first projector and a dynamic eyepiece optically coupled to the first projector. The dynamic eyepiece comprises a waveguide having a variable surface profile. The foveated display also includes a second projector and a fixed depth plane eyepiece optically coupled to the second projector.

## Claims

### Claim 1

A foveated display comprising:
a first projector;
a dynamic eyepiece optically coupled to the first projector, wherein the dynamic eyepiece comprises a waveguide having a variable surface profile;
a second projector; and
a fixed depth plane eyepiece optically coupled to the second projector.

### Claim 2 (depends on 1)

The foveated display of claim 1 wherein the foveated display is characterized by a field of view, the dynamic eyepiece overlaps with a central portion of the field of view, and the fixed depth plane eyepiece overlaps with a peripheral portion of the field of view.

### Claim 3 (depends on 1)

The foveated display of claim 1 wherein the dynamic eyepiece comprises:
a waveguide layer having an input surface, an output surface opposing the input surface, and a periphery; and
a mechanical structure coupled to at least a portion of the periphery of the waveguide layer, wherein the mechanical structure is operable to apply a first mechanical force to the at least a portion of the periphery of the waveguide layer to modify a surface profile of the output surface of the waveguide layer.

### Claim 4 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure is operable to modify an angle associated the periphery of the waveguide layer.

### Claim 5 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure comprises one or more mechanically mobile joints between the waveguide layer and a second waveguide layer.

### Claim 6 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure is operable to apply a shear strain to the waveguide layer.

### Claim 7 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure is operable to apply a stretching and or compressive force to the waveguide layer.

### Claim 8 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure comprises a fixed frame and an actuator.

### Claim 9 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure comprises an electroactive polymer (EAP) system that further includes a voltage source electrically coupled to an EAP film.

### Claim 10 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure comprises a vacuum chuck mechanism.

### Claim 11 (depends on 3)

The foveated display of claim 3 wherein the first mechanical force is applied to the waveguide layer continuously.

### Claim 12 (depends on 3)

The foveated display of claim 3 wherein the mechanical structure comprises a top disk and a bottom disk, wherein the top disk and the bottom disk have slots operable to receive support posts.

### Claim 13 (depends on 3)

The foveated display of claim 3 wherein the first mechanical force is applied in a direction that is normal to the input surface and the output surface opposing the input surface.

### Claim 14 (depends on 3)

The foveated display of claim 3 wherein the periphery has a top surface and a bottom surface, wherein the mechanical structure is in contact with both the top surface and the bottom surface.

### Claim 15 (depends on 3)

The foveated display of claim 3 wherein the periphery has a top surface and a bottom surface, wherein the mechanical structure is in contact with the bottom surface.

### Claim 16 (depends on 1)

The foveated display of claim 1 wherein the variable surface profile comprises a first, planar surface profile and a second, non-planar surface profile.

### Claim 17 (depends on 1)

The foveated display of claim 1 wherein the variable surface profile comprises a first surface profile having a positive curvature and a second surface profile having a negative curvature.

### Claim 18 (depends on 1)

The foveated display of claim 1 wherein the fixed depth plane eyepiece is characterized by a planar surface profile.

### Claim 19 (depends on 1)

The foveated display of claim 1 wherein the fixed depth plane eyepiece abuts a first side of the dynamic eyepiece.

### Claim 20 (depends on 1)

The foveated display of claim 1 wherein the fixed depth plane eyepiece abuts more than one side of the dynamic eyepiece thereby partially surrounding the dynamic eyepiece.