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:
Dec. 27, 2022
Filed:
Feb. 03, 2021
Meta Platforms Technologies, Llc, Menlo Park, CA (US);
Maik Andre Scheller, Redmond, WA (US);
Liliana Ruiz Diaz, Redmond, WA (US);
Marc Aurele Gilles, Redmond, WA (US);
Andrew John Ouderkirk, Redmond, WA (US);
Robert Dale Cavin, Seattle, WA (US);
Meta Platforms Technologies, LLC, Menlo Park, CA (US);
Abstract
Self-mixed interferometer (SMI) devices and techniques are described for measuring depth and/or velocity of objects. The SMI devices and techniques may be used for eye-tracking. A light source of an SMI sensor emits coherent light that is directed to a target location with a scanning module. One or more SMI signals are measured. The one or more SMI signals are generated by the SMI sensor in response to feedback light received from the target location. The feedback light is a portion of the coherent light that illuminated the target location.