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:
Jan. 21, 2025
Filed:
Sep. 02, 2022
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Yun-Han Lee, Redmond, WA (US);
Lu Lu, Kirkland, WA (US);
Mengfei Wang, Woodinville, WA (US);
Fenglin Peng, Redmond, WA (US);
Junren Wang, Kirkland, WA (US);
Oleg Yaroshchuk, Kyiv, UA;
Yingfei Jiang, Fremont, CA (US);
Babak Amirsolaimani, Redmond, WA (US);
Scott Charles McEldowney, Redmond, WA (US);
META PLATFORMS TECHNOLOGIES, LLC, Menlo Park, CA (US);
Abstract
A device includes a display configured to generate an image light. The device also includes a waveguide optically coupled with the display and configured to guide the image light to an exit pupil of the device. The waveguide includes a grating including a birefringent material, and a birefringence of the grating is configured to increase along a pupil-expanding direction of the device.