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. 12, 2021
Filed:
Feb. 19, 2019
Facebook Technologies, Llc, Menlo Park, CA (US);
Weichuan Gao, Redmond, WA (US);
Marina Zannoli, Redmond, WA (US);
Yusufu Njoni Bamaxam Sulai, Bothell, WA (US);
Kara Emery, Redmond, WA (US);
FACEBOOK TECHNOLOGIES, LLC, Menlo Park, CA (US);
Abstract
A near-eye display assembly includes an electronic display for providing image light, a circular polarizer disposed downstream of the electronic display for circularly polarizing the image light, and a pancake lens disposed downstream of the circular polarizer for conveying the image light to an eyebox of the near-eye display. The circular polarizer includes a quarter-wave waveplate disposed between the electronic display and the pancake lens, and spaced apart from the electronic display and the pancake lens, to additionally defocus ghost image artifacts at the eyebox.