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. 29, 2020
Filed:
Oct. 03, 2017
Facebook Technologies, Llc, Menlo Park, CA (US);
Ying Geng, Sammamish, WA (US);
Yusufu Njoni Bamaxam Sulai, Bothell, WA (US);
Andrew John Ouderkirk, Redmond, WA (US);
Brian Wheelwright, Sammamish, WA (US);
Jacques Gollier, Redmond, WA (US);
Alexander Sohn, Bellevue, WA (US);
Robin Sharma, Redmond, WA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
A head-mounted device (HMD) comprises a display element, a Fresnel assembly, an illumination source, and a camera assembly. The display element outputs image light in a first band of light through a display surface. The optics block directs light from the display element to a target region (e.g., includes a portion of a user's face, eyes, etc.). The Fresnel assembly transmits light in the first band and directs light in a second band different than the first band to a first position. The source illuminates the target area with light in the second band. The camera is located in the first position and captures light in the second band corresponding to light reflected from the target area that is then reflected by the Fresnel assembly toward the camera. A controller may use the captured light to determine tracking information for areas of a user's face (e.g., eyes).