公开(公告)号：US20250164668A1

公开(公告)日：2025-05-22

申请号：US18930901

申请日：2024-10-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Yang Zhao ,  Ying Geng ,  Jacques Gollier ,  Douglas Robert Lanman

IPC: G02B3/08 ,  G02B27/42

Abstract: An optical assembly includes a Fresnel lens and a diffractive optical element. The Fresnel lens includes a high-refractive-index material having a refractive index greater than 1.9. The diffractive optical element is optically coupled with the Fresnel lens to compensate for chromatic aberration caused by the Fresnel lens. A method for imaging light with the optical assembly is also disclosed.

公开(公告)号：US12287484B2

公开(公告)日：2025-04-29

申请号：US18129620

申请日：2023-03-31

Applicant: Meta Platforms Technologies, LLC

Inventor： Yang Zhao ,  Afsoon Jamali ,  Junren Wang ,  Wai Sze Tiffany Lam ,  Lu Lu ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G02F1/137 ,  G03B13/36

Abstract: A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.

公开(公告)号：US11733734B1

公开(公告)日：2023-08-22

申请号：US17323701

申请日：2021-05-18

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Joyce S Fang ,  Nicholas Colonnese ,  Bruce A Cleary, III ,  Ryan Michael Ebert ,  Douglas Robert Lanman

IPC: G06F1/16 ,  G06F3/01 ,  G02B27/01

CPC classification number: G06F1/163 ,  G02B27/0172 ,  G06F3/012 ,  G06F3/013

Abstract: A head mounted display (HMD) includes a set of one or more lenses defining an optical axis, a display configured to project light through the set of the one or more lenses, a voice coil actuator coupled with the display and configured to move the display along the optical axis, and a first guide that is separate from the first voice coil actuator and coupled with the first display to guide the movement of the first display. The HMD additionally includes a set of one or more position sensors configured to determine a position of the display long the optical axis and an electronic controller configured to receive information identifying a reference position of the display along the optical axis and generate one or more electrical signals for initiating a movement of the first display toward the first reference point along the optical axis.

公开(公告)号：US11686942B2

公开(公告)日：2023-06-27

申请号：US16730293

申请日：2019-12-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Yang Zhao ,  Afsoon Jamali ,  Junren Wang ,  Wai Sze Tiffany Lam ,  Lu Lu ,  Douglas Robert Lanman

IPC: G02F1/137 ,  G02B27/01 ,  G03B13/36

CPC classification number: G02B27/0172 ,  G02F1/13718 ,  G03B13/36

Abstract: A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.

公开(公告)号：US12130450B1

公开(公告)日：2024-10-29

申请号：US17163150

申请日：2021-01-29

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Yang Zhao ,  Ying Geng ,  Jacques Gollier ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G02B3/08 ,  G02B27/42

CPC classification number: G02B3/08 ,  G02B27/4211

Abstract: An optical assembly includes a Fresnel lens and a diffractive optical element. The Fresnel lens includes a high-refractive-index material having a refractive index greater than 1.9. The diffractive optical element is optically coupled with the Fresnel lens to compensate for chromatic aberration caused by the Fresnel lens. A method for imaging light with the optical assembly is also disclosed.

公开(公告)号：US11982862B1

公开(公告)日：2024-05-14

申请号：US17954234

申请日：2022-09-27

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Joyce S Fang ,  Nicholas Colonnese ,  Bruce A. Cleary, III ,  Ryan Michael Ebert ,  Douglas Robert Lanman

IPC: G02B7/04 ,  G06F3/01

CPC classification number: G02B7/04 ,  G06F3/012 ,  G06F3/013

Abstract: A head-mounted display device includes a first set of one or more lenses and a first display configured to provide visual data through the first set of one or more lenses. The head-mounted display device further includes a first stepper motor mechanically coupled to the first display, and the first stepper motor is configured to move the first display along a first axis by rotating a rotatable component of the first stepper motor. The head-mounted display device further includes a first electronic controller configured to (i) determine a first position of the first display, (ii) receive information identifying a second position of the first display, and (iii) generate one or more electrical signals that cause the first stepper motor to move the first display from the first position to the second position along the first axis.

公开(公告)号：US11880113B2

公开(公告)日：2024-01-23

申请号：US17736085

申请日：2022-05-03

Applicant: Meta Platforms Technologies, LLC

Inventor： Lu Lu ,  Fenglin Peng ,  Douglas Robert Lanman

IPC: G02F1/29 ,  G02B30/36

CPC classification number: G02F1/29 ,  G02B30/36 ,  G02F1/294

Abstract: A device includes a first-type liquid crystal (LC) lens configured to provide a first optical power that is variable in a first step resolution. The device also includes a second-type LC lens coupled with the first-type LC lens, and configured to provide a second optical power that is variable in a second step resolution. The first step resolution is smaller than the second step resolution. A total optical power of the device is a sum of the first optical power and the second optical power, and is variable in the first step resolution.

公开(公告)号：US11846779B2

公开(公告)日：2023-12-19

申请号：US17495750

申请日：2021-10-06

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Afsoon Jamali ,  Wai Sze Tiffany Lam ,  Brian Wheelwright ,  Lu Lu ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G02B5/18 ,  G02B5/30 ,  G02B26/10 ,  G02B27/00 ,  G02F1/29

CPC classification number: G02B27/0172 ,  G02B5/1828 ,  G02B5/1842 ,  G02B5/3083 ,  G02B26/106 ,  G02B27/0093 ,  G02F1/29 ,  G02B2027/0123 ,  G02B2027/0178 ,  G02F1/294 ,  G02F2203/07

Abstract: An optical assembly includes a plurality of successive optical stages that are configured to transmit light at a variable overall optical power by configuring one or more stages of the successive optical stages. A respective optical stage of the successive optical stages includes an active optical element that is configurable to be in a first state at a first time and a second state at a second time that is distinct from the first time. The active optical element, in the first state, has a first respective optical power for light of a first polarization and a second respective optical power, that is different from the first respective optical power, for light of a second polarization that is orthogonal to the first polarization. The active optical element, in the second state, has a third optical power for light of the first polarization and light of the second polarization.

公开(公告)号：US11714254B1

公开(公告)日：2023-08-01

申请号：US17104962

申请日：2020-11-25

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Joyce S. Fang ,  Nicholas Colonnese ,  Bruce A. Cleary, III ,  Ryan Michael Ebert ,  Douglas Robert Lanman

IPC: G06F3/01 ,  G02B7/04

CPC classification number: G02B7/04 ,  G06F3/012 ,  G06F3/013

Abstract: A head-mounted display device includes one or more lenses and a display configured to provide visual data through the one or more lenses. The head-mounted display device also includes a direct-current (DC) motor mechanically coupled to the display, and the DC motor is configured to move the display along an axis by rotating a rotatable component of the DC motor. The head-mounted display device further includes: position sensor(s) configured to determine a position of the display, and electronic controller(s) in communication with the position sensor(s). The electronic controller(s) are configured to: (i) receive, from the position sensor(s), the determined position of the display as a first position of the display, (ii) receive information identifying a second position of the display, and (iii) generate electrical signal(s) that cause the DC motor to move the display from the first position to the second position along the axis.

公开(公告)号：US11567326B1

公开(公告)日：2023-01-31

申请号：US17085654

申请日：2020-10-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Afsoon Jamali ,  Yang Zhao ,  Brian Wheelwright ,  Douglas Robert Lanman ,  Marina Zannoli ,  Ian Erkelens ,  Yusufu Njoni Bamaxam Sulai ,  Lu Lu ,  Jacques Gollier

IPC: G02B27/01 ,  G02C7/08 ,  G02F1/1343 ,  G02B27/00

Abstract: A device includes a light source configured to emit an image light. The device also includes an optical assembly configured to direct the image light to an eye-box of the device. The optical assembly includes a first optical element portion configured to focus a first portion of the image light propagating through the first optical element portion. The optical assembly also includes a second optical element portion configured to focus a second portion of the image light propagating through the second optical element portion. The second optical element portion includes a liquid crystal (“LC”) lens having an adjustable optical power.