公开(公告)号：US12169273B2

公开(公告)日：2024-12-17

申请号：US17411647

申请日：2021-08-25

Applicant: Facebook Technologies, LLC

Inventor： Babak Amirsolaimani ,  Yusufu Njoni Bamaxam Sulai ,  Kieran Connor Kelly ,  Spencer Allan Wells

IPC: G02B26/00 ,  G02B17/08 ,  G02B26/08 ,  G02B27/01 ,  G02B27/28 ,  G02C7/08

Abstract: A varifocal ocular lens is disclosed. The varifocal ocular lens is based on a pancake lens having a polarization-folded optical path formed by two reflectors, e.g. one polarization-selective reflector and one partial reflector. By placing at least one of the reflectors onto a flexible deformable membrane, the shape e.g. radius of curvature and/or cylindricity of the reflector(s) may be dynamically changed to vary focal length and/or astigmatism of the ocular lens. Viewer's visual prescription and eye vergence may be dynamically and/or statically accommodated by the varifocal lens.

公开(公告)号：US20240141128A1

公开(公告)日：2024-05-02

申请号：US17847821

申请日：2022-06-23

Applicant: Facebook Technologies, LLC

Inventor： Kenneth Alexander Diest ,  Andrew John Ouderkirk ,  Renate Eva Klementine Landig ,  Spencer Allan Wells ,  Katherine Marie Smyth

IPC: C08J9/28 ,  C08J9/00 ,  C08J9/04 ,  G02B1/04 ,  G02B27/01 ,  G06F3/01 ,  H02N1/00

CPC classification number: C08J9/286 ,  C08J9/0061 ,  C08J9/04 ,  G02B1/041 ,  G02B27/0172 ,  G06F3/014 ,  G06F3/016 ,  H02N1/006 ,  C08J2201/05 ,  C08J2205/042 ,  C08J2333/00 ,  C08J2475/04 ,  G02B3/12 ,  G02B2027/0178

Abstract: A nanovoided polymer-based material may include a bulk polymer material defining a plurality of nanovoids and an interfacial film disposed at an interface between each of the plurality of nanovoids and the bulk polymer material. The interfacial film may include one or more layers of material. A method of forming a nanovoided polymer-based material may include (1) forming a bulk polymer material defining a plurality of nanovoids and (2) forming an interfacial film at an interface between each of the plurality of nanovoids and the bulk polymer material. Various other methods, systems, and materials are also disclosed.

公开(公告)号：USD1009867S1

公开(公告)日：2024-01-02

申请号：US29842705

申请日：2022-06-15

Applicant: Facebook Technologies, LLC

Designer： Peter Wesley Bristol ,  Quintin Morris ,  Mauricio Romano ,  Scott Andrew Dallmeyer ,  Brett Delainey Christie ,  Shane Michael Ellis

Abstract: FIG. 1 is a top perspective view of a head-mounted display;
FIG. 2 is a front view of the head-mounted display;
FIG. 3 is a rear view of the head-mounted display;
FIG. 4 is a right side view of the head-mounted display;
FIG. 5 is a left side view of the head-mounted display;
FIG. 6 is a top view of the head-mounted display; and,
FIG. 7 is a bottom view of the head-mounted display.

公开(公告)号：US20230375410A1

公开(公告)日：2023-11-23

申请号：US17749410

申请日：2022-05-20

Applicant: Facebook Technologies, LLC

Inventor： Aiqing Chen ,  Chandra Sekhar Kakani ,  Evan Michael Pollard ,  Ashvath Sharma

IPC: G01J4/00

CPC classification number: G01J4/00 ,  G01J2004/002

Abstract: The disclosed apparatus may include a holding affordance that is configured to hold an optical element, a beam emitter, and a beam sensor, where the holding affordance is positioned, along a first dimension, between the beam emitter and the beam sensor; a first linear stage that supports the beam emitter and that, when actuated, moves the beam emitter along a second dimension; a first rotational stage that supports the beam emitter and that, when actuated, rotates the beam emitter in a staging plane defined by the first dimension and the second dimension; a second linear stage that supports the beam sensor and that, when actuated, moves the beam sensor along the second dimension; and a second rotational stage that supports the beam sensor and that, when actuated, rotates the beam sensor in the staging plane. Various other systems and methods are also disclosed.

公开(公告)号：US20230341684A1

公开(公告)日：2023-10-26

申请号：US17727658

申请日：2022-04-22

Applicant: Facebook Technologies, LLC

Inventor： Jilin Yang ,  Hee Yoon Lee

IPC: G02B27/01 ,  G02B6/293 ,  G02B6/35

CPC classification number: G02B27/0172 ,  G02B6/29316 ,  G02B6/3532

Abstract: A pupil-replicating lightguide includes an in-coupling grating structure, an out-coupling grating structure, and a phase compensation layer. The out-coupling grating structure has a spatially varying parameter such as grating duty cycle or grating thickness for evening out out-coupled distribution of light. The spatially varying out-coupling grating parameter disturbs the phase of the propagating image light. The phase compensation layer has a spatially varying optical thickness that compensates that disturbed phase to planarize an optical phase profile of out-coupled light, thereby improving a modulation transfer function of the pupil-replicating lightguide.

公开(公告)号：US20230176377A1

公开(公告)日：2023-06-08

申请号：US17671446

申请日：2022-02-14

Applicant: Facebook Technologies, LLC

Inventor： Sihui He ,  Jacques Gollier ,  Maxwell Parsons ,  Babak Amirsolaimani ,  Wanli Guenther Chi ,  Daniel Guenther Grief ,  Renate Eva Klementine Landig ,  Xiayu Feng ,  Zhimin Shi ,  Nicholas John Diorio ,  Yang Yang ,  Giuseppe Calafiore ,  Fenglin Peng ,  Tanya Malhotra ,  Andrew John Ouderkirk

IPC: G02B27/01 ,  G02B27/00 ,  G02F1/1335 ,  G02B26/08

CPC classification number: G02B27/0172 ,  G02B26/0816 ,  G02B27/0093 ,  G02F1/133504 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: A directional illuminator for a display apparatus includes a switchable diffuser for tuning a divergence of a light beam illuminating a display panel of the display apparatus. The tunable divergence of the illuminating light beam translates into a tunable exit pupil size at the eyebox of the display apparatus, which may be matched to a pupil size of a user’s eye, thus providing a configurable illumination of the eye pupil. A tiltable reflector in an optical path of the illuminating light beam may be used to shift the location of the exit pupil at the eyebox of the display apparatus.

公开(公告)号：US20230176368A1

公开(公告)日：2023-06-08

申请号：US17701558

申请日：2022-03-22

Applicant: Facebook Technologies, LLC

Inventor： Sihui He ,  Maxwell Parsons ,  Babak Amirsolaimani ,  Wanli Chi ,  Daniel Guenther Greif ,  Renate Eva Klementine Landig ,  Xiayu Feng ,  Zhimin Shi ,  Nicholas John Diorio ,  Yang Yang ,  Giuseppe Calafiore ,  Fenglin Peng ,  Tanya Malhotra ,  Andrew John Ouderkirk

IPC: G02B27/00 ,  G02B27/42 ,  G02B27/01 ,  G02F1/29 ,  G02F1/33 ,  H04N5/232 ,  G06F3/01 ,  G06T3/40 ,  G01B11/22 ,  G01S17/10 ,  G01S7/4865

CPC classification number: G02B27/0081 ,  G02B27/4205 ,  G02B27/0172 ,  G02B27/0093 ,  G02F1/292 ,  G02F1/33 ,  H04N5/23238 ,  G06F3/013 ,  G06T3/4038 ,  G01B11/22 ,  G01S17/10 ,  G01S7/4865 ,  G02B2027/0178 ,  G02B2027/0138 ,  G02B2027/0174 ,  H04N9/04

Abstract: A field of view of an imaging or ranging device may be increased multiple times by providing a switchable diffraction grating structure upstream of an imaging camera or ranging light source. The switchable diffraction grating changes the angle of propagating of incoming light by a fixed step, enabling the device to switch between several portions of a compound field of view. The switchable diffraction grating structure may be supported by a lightguide that guides the image light or ranging light by a series of reflections from opposed surfaces of the lightguide.

公开(公告)号：US20230176274A1

公开(公告)日：2023-06-08

申请号：US17699012

申请日：2022-03-18

Applicant: Facebook Technologies, LLC

Inventor： Sihui He ,  Jacques Gollier ,  Maxwell Parsons ,  Babak Amirsolaimani ,  Wanli Chi ,  Daniel Guenther Greif ,  Renate Eva Klementine Landig ,  Xiayu Feng ,  Zhimin Shi ,  Nicholas John Diorio ,  Yang Yang ,  Giuseppe Calafiore ,  Fenglin Peng ,  Tanya Malhotra ,  Andrew John Ouderkirk

IPC: F21V8/00 ,  G02F1/29

CPC classification number: G02B6/005 ,  G02B6/0031 ,  G02F1/294

Abstract: An illuminator for a display panel includes a slab of transparent material for propagating illuminating light between outer surfaces of the slab, an out-coupler supported by the slab for out-coupling portions of the illuminating light along one of the outer surfaces of the slab, and a tunable microlens array for forming an array of light spots from the out-coupled illuminating light portions downstream of the focusing element for illuminating pixels of the display panel. The array of light spots may be repeated at a distance from the tunable microlens array due to Talbot effect. The display panel may be illuminated in a color-sequential manner, and the tunable microlens array may be used to adjust the focal plane position for each color channel individually.

公开(公告)号：US20230090315A1

公开(公告)日：2023-03-23

申请号：US17481170

申请日：2021-09-21

Applicant: Facebook Technologies, LLC

Inventor： Sarmad Aziz Malik ,  Nils Thomas Fritiof Lunner

IPC: H04R3/02 ,  H04R1/02

Abstract: An audio system for artificial reality systems is configured to reduce feedback and mitigate entrainment in audio content presented to the user. The audio system utilizes adaptive feedback cancellation processes to reduce feedback. The audio system processes reference signals in a hybrid of the time domain and the frequency domain to achieve rapid convergence with decreased entrainment. The audio system may pre-whiten reference signals and speaker signals and separate the pre-whitened signals into frequency bands using a filter bank. The audio system uses a state space algorithm to generate adaptive filters in each frequency band. The adaptive filters may be applied to the speaker signal to generate a feedback cancelation signal which may be subtracted from the reference signal to decrease feedback.

公开(公告)号：US20230064143A1

公开(公告)日：2023-03-02

申请号：US17461605

申请日：2021-08-30

Applicant: Facebook Technologies, LLC

Inventor： Carlos Horacio ALDANA ,  Abhishek Kumar AGRAWAL

IPC: G01S1/08 ,  G01S13/02

Abstract: Disclosed herein are related to a system and a method for determining an Angle of Approach (AoA) of a device. A first device may receive a report from a second device having a plurality of ultra-wideband (UWB) devices. The report may include a plurality of values comprising an elevation component and an azimuth component of the AoA from the first device. At least some of the plurality of values may be obtained according to measurements between the plurality of UWB devices of the second devices and the at least one UWB device of the first device. The first device may determine an AoA from the second device, using the plurality of values from the report received from the second device.