公开(公告)号：US20250164695A1

公开(公告)日：2025-05-22

申请号：US18785679

申请日：2024-07-26

Applicant: Meta Platforms Technologies, LLC

Inventor： Prathmesh Deshmukh ,  Tingling Rao ,  Zhaoyu Nie ,  Andrew John Ouderkirk ,  Jie Li ,  Yuanrui Li ,  Jianji Yang ,  Zhenye Li ,  Sawyer Miller ,  Xuan Wang ,  Joshua Cobb ,  Hsien-Hui Cheng ,  Eugene Cho ,  Robin Sharma ,  Eric Stratton ,  Ajit Ninan ,  Zhexin Zhao ,  Xiayu Feng ,  Yun-Han Lee ,  Michael Escuti ,  Steven John Robbins ,  Babak Amirsolaimani ,  Lu Lu ,  Barry David Silverstein

IPC: G02B6/27 ,  G02B6/34 ,  G02B27/01 ,  G06F1/16

Abstract: An optical element includes a waveguide body that is configured to guide light by total internal reflection from an input end to an output end, an input coupling element located at the input end for coupling light into the waveguide body, and an output coupling element located at the output end for coupling light out of the waveguide body, where the waveguide body includes an organic solid crystal. The organic solid crystal may be a single crystal having principal axes rotated with respect to the dimensions of the waveguide body. Such an optical element may have low weight and exhibit good color uniformity while providing polarization scrambling of the guided light.

公开(公告)号：US12117687B1

公开(公告)日：2024-10-15

申请号：US18302556

申请日：2023-04-18

Applicant: Meta Platforms Technologies, LLC

Inventor： Hsien-Hui Cheng ,  Michael Escuti ,  Xiayu Feng ,  Mengfei Wang ,  Steven John Robbins ,  Zhexin Zhao ,  Lu Lu

IPC: G02F1/1335 ,  G02F1/13363 ,  G02F1/1337 ,  G02F1/137 ,  G03H1/02

CPC classification number: G02F1/133524 ,  G02F1/133507 ,  G02F1/13355 ,  G02F1/133636 ,  G02F1/133757 ,  G02F1/13706 ,  G03H1/0248

Abstract: A device is provided. The device includes a light guide configured to guide a first light propagating therein. The device also includes an optical film coupled with the light guide, optically anisotropic molecules in the optical film being configured with an in-plane orientation pattern having an in-plane pitch along the predetermined in-plane direction. Within the in-plane pitch of the in-plane orientation pattern, azimuthal angles of the optically anisotropic molecules are configured to vary nonlinearly along the predetermined in-plane direction. The optical film is configured to diffract the first light as a plurality of second lights at a plurality of locations of the optical film, with a plurality of predetermined, different diffraction efficiencies.

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：US20230393322A1

公开(公告)日：2023-12-07

申请号：US17834760

申请日：2022-06-07

Applicant: Meta Platforms Technologies, LLC

Inventor： Xiayu Feng ,  Zhexin Zhao ,  Xuan Wang ,  Hekun Huang ,  Gang Li ,  Lu Lu

IPC: F21V8/00 ,  G02B27/42 ,  G02B5/32 ,  G02B27/01

CPC classification number: G02B6/0023 ,  G02B27/4222 ,  G02B6/005 ,  G02B5/32 ,  G02B27/0172

Abstract: A display apparatus includes a lightguide for conveying images to an eyebox. The lightguide includes a substrate, a diffractive optical element (DOE) configured to couple the image light into the substrate. The DOE has a spatially variable pitch configured to provide the DOE with a positive optical power. The lightguide further includes a grating out-coupler supported by the substrate for out-coupling portions of the image light from the substrate toward the eyebox.