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:
Jan. 17, 2023
Filed:
Nov. 12, 2021
Facebook Technologies, Llc, Menlo Park, CA (US);
Alexander Koshelev, Redmond, WA (US);
Giuseppe Calafiore, Redmond, WA (US);
Ying Geng, Bellevue, WA (US);
Fenglin Peng, Redmond, WA (US);
Jacques Gollier, Sammamish, WA (US);
Meta Platforms Technologies LLC, Menlo Park, CA (US);
Abstract
A waveguide illuminator for illuminating a display panel includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. The out-coupled beam portions undergo optical interference and form a Talbot pattern of illumination correlated with pixel array of the display panel, enabling an optical throughput increase by centering individual Talbot peaks on the display panel pixels.