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：US20250164682A1

公开(公告)日：2025-05-22

申请号：US18409194

申请日：2024-01-10

Applicant: Meta Platforms Technologies, LLC

Inventor： Ali Altaqui ,  Xiayu Feng ,  Jihwan Kim ,  Sihui He ,  Yun-Han Lee ,  Steven John Robbins ,  Michael Escuti ,  Lu Lu

IPC: F21V8/00 ,  G02B5/30 ,  G02B5/32

Abstract: The disclosed device may include a waveguide; an output coupler that couples electromagnetic radiation from within the waveguide to outside of the waveguide; and a reflector positioned on an opposite side of the waveguide from the output coupler, where the reflector reflects electromagnetic radiation that leaks from the waveguide through the opposite side of the waveguide back toward the output coupler. Various other devices, systems, and methods are also disclosed.

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：US12001088B2

公开(公告)日：2024-06-04

申请号：US17174714

申请日：2021-02-12

Applicant: Meta Platforms Technologies, LLC

Inventor： Steven John Robbins ,  Michael James Escuti

IPC: G02F1/01 ,  G02F1/1335 ,  G02F1/137 ,  H04N23/11

CPC classification number: G02F1/0136 ,  G02F1/133504 ,  G02F1/133536 ,  G02F1/137 ,  H04N23/11 ,  G02F2203/01 ,  G02F2203/07 ,  G02F2203/11

Abstract: A multi-spectral optical imaging device includes a switchable element configured to be switched between first and second states, one of which alters a polarization of light, and a geometric phase element arranged to receive the light from the switchable element. The geometric phase element is configured to diffract a first wavelength band of the light to alter a direction of propagation thereof based on the polarization and without substantially altering a direction of propagation of a second wavelength band of the light, responsive to the first state of the switchable element. Related optical shutters and multi-spectral optical detectors are also discussed.