The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2025
Filed:
Jun. 22, 2021
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Steven John Robbins, Redmond, WA (US);
Michael James Escuti, Redmond, WA (US);
Jihwan Kim, Cary, NC (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
A diffractive waveguide device includes an optical waveguide and a diffractive element optically coupled to the optical waveguide. The diffractive element is configured to alter a polarization and propagation direction of light of a first polarization, and is configured to transmit light of a second polarization without substantially altering a polarization or propagation direction thereof. A polarizing film assembly is configured to provide the light of the second polarization to the optical waveguide, and/or is configured to block the light of the second polarization from the optical waveguide. The polarizing film assembly includes a polarizer and an optical retarder that is positioned between the polarizer and the optical waveguide. Related devices and methods of operation are also discussed.