公开(公告)号：US12022054B2

公开(公告)日：2024-06-25

申请号：US17649436

申请日：2022-01-31

Applicant: Meta Platforms Technologies, LLC

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

IPC: H04N13/388 ,  G02F1/01 ,  G09G3/00 ,  H04N13/332 ,  H04N13/398

CPC classification number: H04N13/388 ,  G09G3/003 ,  H04N13/332 ,  H04N13/398 ,  G02F1/0136

Abstract: A volumetric display may include a two-dimensional display; a varifocal optical system configured to receive image light from the two-dimensional display and focus the image light; and at least one processor configured to: control the two-dimensional display to cause a plurality of sub-frames associated with an image frame to be displayed by the display, wherein each sub-frame of the plurality of sub-frames includes a corresponding portion of image data associated with the image frame; and control the varifocal optical system to a corresponding focal state for each respective sub-frame.

公开(公告)号：US11953796B2

公开(公告)日：2024-04-09

申请号：US17745854

申请日：2022-05-16

Applicant: Meta Platforms Technologies, LLC

Inventor： Lu Lu ,  Xiayu Feng ,  Hsien-Hui Cheng

IPC: G02F1/137 ,  G02B27/01 ,  G02F1/1333 ,  G02F1/1337 ,  G02F1/1343

CPC classification number: G02F1/137 ,  G02B27/0172 ,  G02F1/133345 ,  G02F1/133738 ,  G02F1/134309 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02F2203/07

Abstract: A device is provided. The device includes a first Pancharatnam-Berry phase (“PBP”) lens, and a second PBP lens stacked with the first PBP lens. Each of the first PBP lens and the second PBP lens includes a liquid crystal (“LC”) layer. Each side of the LC layer is provided with a continuous electrode and a plurality of patterned electrodes. The patterned electrodes in the first PBP lens are arranged non-parallel to the patterned electrodes in the second PBP lens.

公开(公告)号：US11815729B2

公开(公告)日：2023-11-14

申请号：US17229852

申请日：2021-04-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Stephen Choi ,  Mengfei Wang ,  Junren Wang ,  Lu Lu ,  Kyle Justin Curts

IPC: G03H1/26 ,  G02B7/00 ,  G02B5/32 ,  G02B5/18 ,  G03H1/02 ,  G02B27/28 ,  G02B27/42

CPC classification number: G02B7/003 ,  G02B5/1823 ,  G02B5/32 ,  G02B27/286 ,  G02B27/4233 ,  G03H1/0248 ,  G02B2005/1804

Abstract: A system includes a diffractive optical element configured to receive a first beam and a second beam interfering with one another to generate a first interference pattern. The diffractive optical element is also configured to forwardly diffract the first beam and the second beam to output a third beam and a fourth beam. The third beam and the fourth beam interfere with one another to generate a second interference pattern. The system also includes a detector configured to detect the second interference pattern.

公开(公告)号：US11733445B2

公开(公告)日：2023-08-22

申请号：US17083370

申请日：2020-10-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Junren Wang ,  Mengfei Wang ,  Babak Amirsolaimani ,  Lu Lu ,  Scott Charles McEldowney

IPC: G02B5/30 ,  G02B27/01 ,  F21V8/00

CPC classification number: G02B5/3083 ,  G02B5/3016 ,  G02B6/005 ,  G02B27/0172

Abstract: An optical element includes a first birefringent medium layer with orientations of directors of first optically anisotropic molecules spatially varying with a first in-plane pitch and a first vertical pitch. The optical element also includes a second birefringent medium layer with orientations of directors of second optically anisotropic molecules spatially varying with a second in-plane pitch and a second vertical pitch. The second birefringent medium layer is optically coupled with the first birefringent medium layer and configured to reduce a diffraction of a light by the first birefringent medium layer. The first in-plane pitch is substantially the same as the second in-plane pitch, and the second vertical pitch is smaller than the first vertical pitch.

公开(公告)号：US11624864B2

公开(公告)日：2023-04-11

申请号：US17209205

申请日：2021-03-22

Applicant: Meta Platforms Technologies, LLC

Inventor： Junren Wang ,  Lu Lu ,  Hyunmin Song ,  Yun-Han Lee

IPC: G02F1/1337 ,  G02F1/1335 ,  G02B5/30 ,  G02B5/02

Abstract: An optical element is provided. The optical element includes an optical film including a birefringent material having a chirality. Optically anisotropic molecules of the birefringent material disposed adjacent a first surface of the optical film are configured with a first pretilt angle in a range of greater than 10° and less than 80°, or in a range of greater than −80° and less than −10°. Optically anisotropic molecules of the birefringent material disposed adjacent a second surface of the optical film opposing the first surface are configured with a second pretilt angle in the range of greater than 10° and less than 80°, or in the range of greater than −80° and less than −10°.

公开(公告)号：US20220382080A1

公开(公告)日：2022-12-01

申请号：US17330422

申请日：2021-05-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Hsien-Hui Cheng ,  Yang Zhao ,  Hannah Noble ,  Fenglin Peng ,  Lu Lu

IPC: G02F1/01 ,  G02F1/1347 ,  G02F1/139 ,  G02B27/01

Abstract: A polarization modulator includes a first liquid crystal cell and a second liquid crystal cell. The first liquid crystal cell has a first type of liquid crystals configured to rotate an optical axis of light parallel to a first plane of the first liquid crystal cell. The second liquid crystal cell is configured to receive the light from the first liquid crystal cell. The second liquid crystal cell has a second type of liquid crystals configured to rotate the optical axis of the light perpendicular to a second plane of the second liquid crystal cell.

公开(公告)号：US12253428B2

公开(公告)日：2025-03-18

申请号：US18086638

申请日：2022-12-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Yiyang Wu ,  Hsien-Hui Cheng ,  Xuan Wang ,  Lu Lu

IPC: G01M11/02

Abstract: A system for measuring a satellite ghost efficiency of a diffractive lens is provided. The system includes a light source configured to output a first probing beam, and a beam tweaking assembly disposed between the light source and the diffractive lens, and configured to convert the first probing beam into a second probing beam that is a non-collimated beam. The diffractive lens diffracts the second probing beam into a plurality of diffracted beams including a first diffracted beam of a parent diffraction order and a second diffracted beam of a satellite ghost diffraction order. The beam tweaking assembly includes one or more optical lenses, and an adjustable optical power. The system also includes a detector configured to generate a beam spot pattern including a first beam spot corresponding to the first diffracted beam and a second beam spot corresponding to the second diffracted beam.

公开(公告)号：US20240353532A1

公开(公告)日：2024-10-24

申请号：US18642484

申请日：2024-04-22

Applicant: Meta Platforms Technologies, LLC

Inventor： John Ho ,  Jiang Zhu ,  Boon Shiu ,  Paurakh Rajbhandary ,  Yuge Huang ,  Lu Lu ,  Junren Wang ,  Mengfei Wang ,  Xiayu Feng ,  Zhexin Zhao ,  Steven Alexander-Boyd Hickman ,  Tingling Rao ,  Kimberly Kay Childress ,  Amir Shariffar ,  Sadegh Aghaei ,  Zhaoyu Nie ,  Prathmesh Deshmukh ,  Zhaocheng Liu ,  Raymond Smith, II ,  Andrew John Ouderkirk ,  Sawyer Miller ,  Hsien-Hui Cheng ,  Xuan Wang ,  Ali Altaqui ,  Zhuoliang Ni

IPC: G01S7/41 ,  A61B5/024 ,  G02B27/01 ,  G03H1/02

CPC classification number: G01S7/412 ,  A61B5/024 ,  G01S7/415 ,  G02B27/0172 ,  G03H1/0248 ,  G02B2027/0174 ,  G02B2027/0178 ,  G03H2001/026 ,  G03H2250/38

Abstract: A computer-implemented method may include (1) causing a radar component to emit one or more radar signals and (2) causing the radar component to analyze one or more return signals. Also disclosed is a method for forming a 3D liquid crystal polarization hologram optical element and a method for characterizing diffractive waveguides includes directing light onto a structure and measuring the diffracted light to capture at least one image of the structure. Lastly, disclosed is a method of pattering organic solid crystals and a method directing a beam of input light to a surface of an optical material to determine crystallographic and optical parameters of the optical material. Various other methods, systems, and computer-readable media are also disclosed.

公开(公告)号：US12092850B2

公开(公告)日：2024-09-17

申请号：US17073249

申请日：2020-10-16

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Lu Lu ,  Xiayu Feng ,  Mengfei Wang ,  Hao Yu ,  Ryan Li ,  Yun-Han Lee ,  Junren Wang ,  Barry David Silverstein

IPC: G02B5/32 ,  G02B5/20 ,  G02B5/30 ,  G03H1/02 ,  G03H1/04

CPC classification number: G02B5/32 ,  G02B5/203 ,  G02B5/3016 ,  G03H1/0248 ,  G03H1/0402 ,  G03H2001/0413 ,  G03H2001/0439 ,  G03H2260/12

Abstract: A first layer of anisotropic material extends along a first plane and includes anisotropic components being parallel to a second plane non-parallel and non-perpendicular to the first plane. The anisotropic components are arranged in cycloidal or helical patterns. The cycloidal or helical patterns define one or more Bragg planes that are non-parallel and non-perpendicular to the first plane and either substantially parallel or substantially perpendicular to the second plane.

公开(公告)号：US11874474B1

公开(公告)日：2024-01-16

申请号：US17018579

申请日：2020-09-11

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Mengfei Wang ,  Junren Wang ,  Lu Lu ,  Robin Sharma ,  Gregory Olegovic Andreev ,  Garam Young ,  Andrew John Ouderkirk ,  Babak Amirsolaimani ,  Fenglin Peng ,  Barry David Silverstein

IPC: G02B27/01 ,  G02B27/42 ,  G02B27/28 ,  G02F1/31 ,  H04N23/55 ,  H04N23/75

CPC classification number: G02B27/0179 ,  G02B27/0172 ,  G02B27/283 ,  G02B27/286 ,  G02B27/4205 ,  G02F1/31 ,  H04N23/55 ,  H04N23/75 ,  G02B2027/011 ,  G02B2027/0138 ,  G02B2027/0187 ,  G02F2203/01 ,  G02F2203/07 ,  G02F2203/24

Abstract: A system includes a diffractive optical element including at least one substrate and a grating structure. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range, and the at least one substrate is configured to reflect a second light. The system also includes a polarization selective mechanism configured to generate images based on the first light and the second light, respectively.