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:
Aug. 26, 2025
Filed:
Nov. 06, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Zhexin Zhao, Redmond, WA (US);
Xiayu Feng, Kirkland, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
A device is provided. The device includes a light guide having a curved surface. The device also includes an out-coupling element coupled with the light guide at an output portion of the light guide. The device further includes a reflective layer disposed at the output portion of the light guide. The out-coupling element is configured to couple a first ray propagating inside the light guide out of the light guide as a plurality of second rays propagating in non-parallel directions toward the reflective layer. The reflective layer is configured to reflect the plurality of second rays as a plurality of third rays propagating in parallel directions toward the out-coupling element and the light guide.