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:
Mar. 25, 2025
Filed:
Feb. 07, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Miaomiao Xu, Redmond, WA (US);
Brian Wheelwright, Sammamish, WA (US);
Fenglin Peng, Redmond, WA (US);
Ying Geng, Bellevue, WA (US);
Changwon Jang, Bellevue, WA (US);
Maxwell Parsons, Seattle, WA (US);
Sihui He, Sunnyvale, CA (US);
Jacques Gollier, Sammamish, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
An illuminator for illuminating a display panel includes a lightguide with an array of buried slanted bulk reflectors that out-couple portions of the light beam propagating in the lightguide through one of the lightguide surfaces. Polarization beam-splitting slanted surfaces may be used to provide polarized output. Such an illuminator may be used with a reflective display panel operating by polarization. The beam-splitting slanted surfaces operate as a polarizer, providing polarized illuminating light. The light reflected by the reflective panel may propagate back through the illuminator, and the polarization beam-splitting slanted surfaces may operate also as analyzer.