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. 11, 2023
Filed:
Apr. 03, 2020
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Wanli Chi, Sammamish, WA (US);
Dominic Meiser, Issaquah, WA (US);
Yang Yang, Redmond, WA (US);
Wai Sze Tiffany Lam, Redmond, WA (US);
Pasi Saarikko, Kirkland, WA (US);
META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US);
Abstract
A waveguide display includes a waveguide and a grating coupler configured to couple display light into or out of the waveguide. The grating coupler includes at least a first grating layer and a second grating layer arranged in a stack. The first grating layer is characterized by a first thickness and includes a first transmission VBG configured to diffract display light of a first wavelength from a first field of view. The second grating layer is characterized by a second thickness greater than the first thickness and includes a second transmission VBG configured to diffract display light of the first wavelength from a second field of view greater than the first field of view.