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. 18, 2022
Filed:
Dec. 18, 2019
Applicant:
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Inventors:
Tanya Malhotra, Redmond, WA (US);
Liangyu Qiu, Rochester, NY (US);
Andrew John Ouderkirk, Kirkland, WA (US);
Assignee:
META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/13 (2006.01); G02F 1/13363 (2006.01); C08L 67/00 (2006.01); G02B 5/18 (2006.01); G02B 27/01 (2006.01); F21V 8/00 (2006.01);
U.S. Cl.
CPC ...
G02F 1/13363 (2013.01); C08L 67/00 (2013.01); G02B 5/18 (2013.01); G02B 27/0172 (2013.01); G02B 6/0016 (2013.01);
Abstract
A waveguide display includes a substrate transparent to at least one of visible or near infrared light, and a grating on the substrate. The grating includes ridges formed using a birefringent material and is configured to selectively couple incident light in a first polarization state into or out of the substrate. The birefringent material in the ridges is characterized by an optic axis parallel to a plane that includes a grating vector of the grating.