Zonal lenses for a head-mounted display (HMD) device

Patent metadata

Field	Value
Publication number	US-12352973-B2
Application number	US-202217831066-A
Country	US
Kind code	B2
Filing date	Jun 2, 2022
Priority date	Jun 2, 2022
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

An optical element may include two or more zones to perform functions in a head-mounted display (HMD) device. An optical component may include a first optical zone characterized by a first sag profile to correct a refractive error of an eye of a user and a second optical zone characterized by a second sag profile to redirect a path of an illumination light beam. A transition zone located between the first optical zone and the second optical zone may provide a smooth transition between the first optical zone and the second optical zone.

First claim

The invention claimed is:

1. A near-eye display device comprising:
a light source to generate a light beam;
a camera; and
an optical component comprising:
a first optical zone characterized by a first sag profile to correct a refractive error of an eye of a user;
a second optical zone characterized by a second sag profile to redirect a path of the light beam from the light source to the eye of the user, wherein the light source is oriented with a view only through the second optical zone; and
a third optical zone characterized by a third sag profile to provide viewing window for the camera, wherein the camera is oriented to view through the third optical zone.

2. The near-eye display device of claim 1 , wherein the optical component further comprises:
a first transition zone located between the first optical zone and the second optical zone and providing a smooth transition between the first optical zone and the second optical zone; and
a second transition zone located between the third optical zone and one of the first optical zone or the second optical zone and providing a smooth transition between the third optical zone and the one of the first optical zone or the second optical zone.

3. The near-eye display device of claim 2 , wherein the third sag profile of the third optical zone is substantially flat.

4. The near-eye display device of claim 2 , wherein the first optical zone, the second optical zone, and the first transition zone define annular boundary zones.

5. The near-eye display device of claim 2 , wherein the first optical zone, the second optical zone, and the first transition zone define rectilinear boundary zones.

6. The near-eye display device of claim 2 , wherein the first optical zone, the second optical zone, and the first transition zone define sparse boundary zones.

7. The near-eye display device of claim 1 , wherein the first sag profile of the first optical zone has a curvature that corrects at least one of myopia, hyperopia, astigmatism, or presbyopia of the eye of the user.

8. A head-mounted display (HMD) device, comprising:
a light source to emit a light beam; and
an optical component comprising:
a first optical zone characterized by a first sag profile to correct a refractive error of an eye of a user;
a second optical zone characterized by a second sag profile to redirect a path of the light beam from the light source toward the eye of the user, wherein the light source is oriented with a view only through the second optical zone of the optical component; and
a first transition zone located between the first optical zone and the second optical zone and providing a smooth transition between the first optical zone and the second optical zone.

9. The head-mounted display (HMD) device of claim 8 , further comprising:
a camera,
wherein the optical component further comprises:
a third optical zone characterized by a third sag profile to provide a viewing window for the camera, wherein the camera is oriented with a view only through the third optical zone; and
a second transition zone located between the third optical zone and one of the first optical zone or the second optical zone and providing a smooth transition between the third optical zone and the one of the first optical zone or the second optical zone.

10. The head-mounted display (HMD) device of claim 9 , wherein the third sag profile of the third optical zone is substantially flat.

11. The head-mounted display (HMD) device of claim 8 , wherein the first optical zone, the second optical zone, and the first transition zone define annular boundary zones.

12. The head-mounted display (HMD) device of claim 8 , wherein the first optical zone, the second optical zone, and the first transition zone define rectilinear boundary zones.

13. The head-mounted display (HMD) device of claim 8 , wherein the first optical zone, the second optical zone, and the first transition zone define sparse boundary zones.

14. A method of manufacturing a head-mounted display (HMD) device, the method comprising:
manufacturing an optical component to be placed in the head-mounted display (HMD) device, comprising:
forming a first optical zone of the optical component characterized by a first sag profile to correct a refractive error of an eye of a user;
forming a second optical zone of the optical component characterized by a second sag profile to redirect a path of a light beam from a light source toward the eye of the user; and
forming a first transition zone located between the first optical zone and the second optical zone and providing a smooth transition between the first optical zone and the second optical zone,
wherein the light source is oriented with a view only through the second optical zone of the optical component.

15. The method of claim 14 , wherein manufacturing the optical component further comprises:
forming a third optical zone of the optical component characterized by a third sag profile to provide a viewing window for a camera to view through the third optical zone; and
forming a second transition zone located between the third optical zone and one of the first optical zone or the second optical zone and providing a smooth transition between the third optical zone and the one of the first optical zone or the second optical zone,
wherein the camera is oriented with a view only through the third optical zone.

16. The method of claim 15 , wherein the third sag profile of the third optical zone is substantially flat.

17. The method of claim 14 , wherein the first sag profile of the first optical zone has a curvature that corrects at least one of myopia, hyperopia, astigmatism, or presbyopia of the eye of the user.

18. The method of claim 14 , wherein the first optical zone, the second optical zone, and the first transition zone define annular boundary zones.

19. The method of claim 14 , wherein the first optical zone, the second optical zone, and the first transition zone define rectilinear boundary zones.

20. The method of claim 14 , wherein the first optical zone, the second optical zone, and the first transition zone define sparse boundary zones.

Assignees

• Meta Platforms Tech Llc

Inventors

• Odom Garret
• Sharma Robin
• Naples Neil
• Zhang Qi

Classifications

• G02B27/0093 Primary

  with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking · CPC title

• G02B2027/011

  comprising device for correcting geometrical aberrations, distortion · CPC title

• G02B2027/0178

  Eyeglass type (eyeglass details G02C) · CPC title

• G02B27/0172 Primary

  characterised by optical features · CPC title