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:
Sep. 30, 2025
Filed:
Dec. 06, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Renate Eva Klementine Landig, Kirkland, WA (US);
Sihui He, Sunnyvale, CA (US);
Miaomiao Xu, Redmond, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
A waveguide for conveying image light in a display device is disclosed. The waveguide comprises a waveguide body, an input coupler configured to couple the image light into the waveguide body for propagating the image light within the waveguide body along a zigzag light path, and a plurality of slanted bulk mirrors disposed along the zigzag light path within the waveguide body and having a tunable reflectivity parameter for controlling a spatial distribution of image light portions out-coupled from the waveguide body by the plurality of slanted bulk mirrors. The waveguide may include a plurality of slanted polarization-selective bulk mirrors, and a liquid crystal layer configured to alter the polarization of the image light, the liquid crystal layer being disposed between a backplane electrode and a pixelated electrode configured to control the liquid crystal layer by application of a spatially-varying voltage profile.