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:
Sep. 01, 2020
Filed:
Dec. 04, 2018
Facebook Technologies, Llc, Menlo Park, CA (US);
Hee Yoon Lee, Kirkland, WA (US);
Ningfeng Huang, Redmond, WA (US);
Eric Fest, Seattle, WA (US);
Pasi Saarikko, Kirkland, WA (US);
Erik Shipton, Kenmore, WA (US);
Giuseppe Calafiore, Redmond, WA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A waveguide display includes a first substrate and one or more grating layers on a first surface of the first substrate. The one or more grating layers are configured to cause destructive interference between ambient light diffracted by at least two grating layers or between ambient light diffracted by different portions of one grating layer. In some embodiments, the waveguide display also includes an angular-selective transmissive layer. The angular-selective transmissive layer is configured to reflect, diffract, or absorb ambient light incident on the angular-selective reflective layer with an incidence angle greater than a threshold value.