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:
Jul. 07, 2020
Filed:
Dec. 18, 2018
Facebook Technologies, Llc, Menlo Park, CA (US);
Andrew Maimone, Duvall, WA (US);
Andrew Ouderkirk, Redmond, WA (US);
Hee Yoon Lee, Redmond, WA (US);
Ningfeng Huang, Redmond, WA (US);
Maxwell Parsons, Berkley, CA (US);
Scott Charles McEldowney, Redmond, WA (US);
Babak Amirsolaimani, Redmond, WA (US);
Pasi Saarikko, Kirkland, WA (US);
Wanli Chi, Sammamish, WA (US);
Giuseppe Calafiore, Redmond, WA (US);
Alexander Koshelev, Redmond, WA (US);
Barry David Silverstein, Kirkland, WA (US);
Lu Lu, Kirkland, WA (US);
Wai Sze Tiffany Lam, Redmond, WA (US);
Gang Li, Seattle, WA (US);
Stephan Lutgen, Dresden, DE;
Francois Olivier, Cork, IE;
David Massoubre, Cork, IE;
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A pupil-replicating waveguide suitable for operation with a coherent light source is disclosed. A waveguide body has opposed surfaces for guiding a beam of image light. An out-coupling element is disposed in an optical path of the beam for out-coupling portions of the beam at a plurality of spaced apart locations along the optical path. Electrodes are coupled to at least a portion of the waveguide body for modulating an optical path length of the optical path of the beam to create time-varying phase delays between the portions of the beam out-coupled by the out-coupling element.