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:
Apr. 04, 2023
Filed:
Jul. 22, 2021
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Jacques Gollier, Sammamish, WA (US);
Fenglin Peng, Redmond, WA (US);
Alexander Koshelev, Redmond, WA (US);
Giuseppe Calafiore, Redmond, WA (US);
Lu Lu, Kirkland, WA (US);
Ying Geng, Bellevue, WA (US);
Yun-Han Lee, Redmond, WA (US);
Meta Platforms Technologies LLC, Menlo Park, CA (US);
Abstract
An illuminator for a display panel includes a light source for providing a light beam and a lightguide coupled to the light source for receiving and propagating the light beam along the substrate. The lightguide includes an array of out-coupling gratings that runs parallel to the array of pixels for out-coupling portions of the light beam from the lightguide such that the out-coupled light beam portions propagate through the substrate and produce an array of optical power density peaks at the array of pixels due to Talbot effect. A period of the array of peaks is an integer multiple of a pitch of the array of pixels.