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:
Aug. 18, 2020
Filed:
May. 24, 2018
Oculus Vr, Llc, Menlo Park, CA (US);
Erik Shipton, Kenmore, WA (US);
Alireza Moheghi, Redmond, WA (US);
Giuseppe Calafiore, Redmond, WA (US);
Hee Yoon Lee, Bellevue, WA (US);
Facebook Technologies, LLC, Menlo Park, CA (US);
Abstract
An apparatus may include a projector that switches from emitting monochromatic light of a first color to emitting monochromatic light of a second color that is different from the first color. The apparatus may also include one or more variable-pitch diffraction gratings that diffract monochromatic light emitted from the projector. The apparatus may further include a controller that changes a pitch of at least one of the one or more variable-pitch diffraction gratings from a first pitch used when the projector is emitting monochromatic light of the first color to a second pitch used when the projector is emitting monochromatic light of the second color.