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. 20, 2020
Filed:
Dec. 21, 2018
Facebook Technologies, Llc, Menlo Park, CA (US);
Dong Chen, Suzhou, CN;
Shizhe Shen, San Mateo, CA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A headset includes a display block and an optics block. The display block includes a waveguide configured to receive light from a light source assembly, a plurality of extraction features that have a spatial distribution across one or more surfaces of the waveguide, wherein the plurality of extraction features out-couple light from the waveguide, and the spatial distribution is such that out-coupled light has a first non-uniform brightness distribution, and a display panel configured to modulate the out-coupled light to form image light, wherein the image light has a brightness distribution based in part on the first non-uniform brightness distribution. The optics block includes optical elements configured to direct the image light to an eyebox, and the optics block adds a second non-uniform brightness distribution that is offset by the first non-uniform brightness distribution, such that the image light directed to the eyebox has a target brightness distribution.