公开(公告)号：US20240184124A1

公开(公告)日：2024-06-06

申请号：US18237332

申请日：2023-08-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Ali Altaqui ,  Xuan Wang ,  Lu Lu ,  Michael Escuti ,  Chulwoo Oh ,  Hsien-Hui Cheng ,  Jihwan Kim ,  Yuge Huang ,  Yun-Han Lee ,  Brian Wheelwright

IPC: G02B27/01 ,  G02B5/30 ,  G02B27/09 ,  G02F1/01

CPC classification number: G02B27/0179 ,  G02B5/3083 ,  G02B27/0172 ,  G02B27/0922 ,  G02B27/0955 ,  G02F1/0136 ,  G02B2027/0185

Abstract: A multi-focal system includes a display pixel array, a pixelated polarization array, and a Pancharatnam-Berry phase (PBP) lens. The display pixel array includes a first display pixels generating first display light and a second display pixels generating second display light. The pixelated polarization array has first pixels and second pixels. The first pixels are aligned with the first display pixels to generate a first polarized light having a first polarization orientation. The second pixels are aligned with the second display pixels to generate a second polarized light having a second polarization orientation different from the first polarization orientation. The PBP lens is configured to focus the first polarized light having the first polarization orientation to a first focal length and focus the second polarized light having the second polarization orientation to a second focal length that is greater than the first focal length.

公开(公告)号：US12259616B1

公开(公告)日：2025-03-25

申请号：US18498001

申请日：2023-10-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Nicholas John Diorio, Jr. ,  Mengfei Wang ,  Yuge Huang ,  Kai-Han Chang ,  Lu Lu ,  Xiayu Feng

IPC: G02F1/13363 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343

Abstract: A device includes a plurality of electrode layers. The device also includes a birefringent medium layer disposed between the plurality of electrode layers. The device also includes at least one alignment structure disposed at a surface of the birefringent medium layer. The birefringent medium layer includes liquid crystal molecules arranged in a plurality of helical twist structures having a helical axis. The plurality of electrode layers are configured to generate an electric field within the birefringent medium layer, and the liquid crystal molecules are aligned via the electric field to be titled with respect to the helical axis.

公开(公告)号：US11754870B2

公开(公告)日：2023-09-12

申请号：US17944183

申请日：2022-09-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Junren Wang ,  Yuge Huang ,  Yun-Han Lee ,  Lu Lu

IPC: G02F1/1334 ,  G02F1/1337 ,  G02F1/13363

CPC classification number: G02F1/13342 ,  G02F1/13363 ,  G02F1/133707

Abstract: A device is provided. The device includes a polarization hologram polymer layer having a wavy surface, an optic axis of the polarization hologram polymer layer being configured with a spatially varying orientation in a first predetermined in-plane direction. The device also includes a compensation layer disposed at the wavy surface of the polarization hologram polymer layer and configured to compensate for the wavy surface in shape.

公开(公告)号：US11889717B2

公开(公告)日：2024-01-30

申请号：US17559212

申请日：2021-12-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Zhimin Shi ,  Yuge Huang ,  Fenglin Peng ,  Anurag Tyagi

IPC: H10K50/852 ,  G09G3/00 ,  G09G3/32 ,  H10K50/822 ,  H10K59/12

CPC classification number: H10K50/852 ,  G09G3/002 ,  G09G3/32 ,  H10K50/822 ,  G09G2320/0295 ,  H10K59/12

Abstract: Various embodiments set forth light emission display elements, and display devices that include such display elements. In some embodiments, a display element includes an electroluminescent light source and a pair of reflective elements that form a resonant cavity for a particular range of wavelengths and/or a particular polarization of light. One or both of the reflective elements can include meta-reflectors, such as anisotropic meta-reflectors or chiral meta-reflectors. An optional waveplate can be placed between the reflective elements to adjust the polarization state of light emitted by the display element.

公开(公告)号：US11796881B2

公开(公告)日：2023-10-24

申请号：US18157060

申请日：2023-01-19

Applicant: Meta Platforms Technologies, LLC

Inventor： Yuge Huang ,  Nicholas John Diorio, Jr. ,  Lu Lu

IPC: G02F1/137 ,  C09K19/02 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/139 ,  G02B27/00 ,  C09K19/58 ,  C09K19/54

CPC classification number: G02F1/13775 ,  C09K19/0275 ,  C09K19/542 ,  C09K19/586 ,  G02B27/0093 ,  G02F1/1337 ,  G02F1/1398 ,  G02F1/13793 ,  G02F1/133365 ,  G02F1/133526 ,  C09K2019/546

Abstract: A device includes a polymer stabilized blue phase liquid crystal (“PS-BPLC”) layer. The device also includes an alignment structure coupled with the PS-BPLC layer. LC molecules disposed in contact with the alignment structure are configured to have a spatially varying in-plane orientation pattern that is at least partially defined by the alignment structure. The PS-BPLC layer is configured to forwardly deflect a polarized light having a predetermined handedness, and transmit a polarized light having a handedness that is orthogonal to the predetermined handedness.

公开(公告)号：US11573357B2

公开(公告)日：2023-02-07

申请号：US17093609

申请日：2020-11-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Fenglin Peng ,  Junren Wang ,  Yuge Huang ,  Lu Lu ,  Yusufu Njoni Bamaxam Sulai ,  Ying Geng ,  Jacques Gollier ,  Barry David Silverstein

IPC: G02F1/1335 ,  G02B5/30 ,  G02B5/08 ,  G02B7/02

Abstract: A device includes a light source configured to generate an image light. The device also includes a lens assembly coupled with the light source. The lens assembly includes a mirror configured to transmit a first portion of the image light and reflect a second portion of the image light. The lens assembly also includes a reflective polarizer including a birefringent medium with a chirality and configured to substantially reflect the first portion of the image light output from the mirror as a polarized light having a predetermined handedness toward the mirror. The lens assembly further includes a lens disposed between the mirror and the reflective polarizer and configured to provide an optical power to the image light.

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：US11656500B2

公开(公告)日：2023-05-23

申请号：US16898091

申请日：2020-06-10

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Yuge Huang ,  Fenglin Peng ,  Lu Lu ,  Junren Wang

IPC: G02F1/13357 ,  G02F1/1335 ,  G02B5/30

CPC classification number: G02F1/13362 ,  G02B5/3016 ,  G02F1/133526 ,  G02F1/133543 ,  G02F2201/343

Abstract: An optical device includes a light source and a polarization selective optical element. The polarization selective optical element includes a stack of a plurality of cholesteric liquid crystal layers. The plurality of cholesteric liquid crystal layers includes a first cholesteric liquid crystal layer with liquid crystal molecules arranged in a first helical configuration having a first pitch range for light of a first wavelength range and a second cholesteric liquid crystal layer with liquid crystal molecules arranged in a second helical configuration having a second pitch range for light of a second wavelength range. The second wavelength range is different from the first wavelength range.

公开(公告)号：US11650429B2

公开(公告)日：2023-05-16

申请号：US17671348

申请日：2022-02-14

Applicant: Meta Platforms Technologies, LLC

Inventor： Junren Wang ,  Mengfei Wang ,  Yun-Han Lee ,  Yuge Huang ,  Lu Lu ,  Barry David Silverstein

IPC: G02B27/28 ,  G02B27/30 ,  G02B27/01 ,  G02B5/18 ,  G02B5/30

CPC classification number: G02B27/286 ,  G02B5/1814 ,  G02B5/1833 ,  G02B5/3016 ,  G02B27/0172 ,  G02B27/30 ,  G02B2027/0123 ,  G02B2027/0138 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A polarization conversion device includes a geometric phase grating and an angular selective waveplate. The geometric phase grating includes a first liquid crystal layer and is configured to diffract a unpolarized or partially polarized incident light beam into a first light beam and a second light beam (e.g., in two different diffraction orders). The first light beam is characterized by a first polarization state and propagates in a first direction. The second light beam is characterized by a second polarization state and propagates in a second direction. The angular selective waveplate includes a second liquid crystal layer, and functions as a zero or full-wave plate for the first light beam incident in the first direction and a half-wave plate for the second light beam incident in the second direction.

公开(公告)号：US20220350065A1

公开(公告)日：2022-11-03

申请号：US17582580

申请日：2022-01-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Tingling Rao ,  Yuge Huang ,  Lafe Joseph Purvis, II ,  Kimberly Kay Childress ,  Arman Boromand ,  Tanya Malhotra ,  Andrew John Ouderkirk ,  Lu Lu ,  Poer Sung

IPC: G02B5/30 ,  C30B29/54 ,  C30B7/14 ,  B29D11/00

Abstract: A multilayer organic thin film includes a plurality of biaxially-oriented layers, where each layer is characterized by mutually orthogonal refractive indices, n1≠n2≠n3. In example structures, the corresponding in-plane refractive indices of adjacent layers may be rotated with respect to each other by a predetermined angle. Such a multilayer may be incorporated into a circular reflective polarizer, for example, which may be used in display systems to provide high broadband efficiency and high off-axis contrast. In an example process, individual organic thin films may be molded, and then oriented and stacked to form a multilayer.