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. 04, 2018
Filed:
Sep. 01, 2015
Apple Inc., Cupertino, CA (US);
Richard Ruh, Cupertino, CA (US);
Prashanth S. Holenarsipur, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
An optical encoder having diffuser members, and methods for detecting the rotational movement of the cylinder of the optical encoder are disclosed. The optical encoder may include a rotatable cylinder configured to reflect light. The rotatable cylinder may include an encoding pattern of alternating reflective stripes having distinct light-reflective properties. The optical encoder may also include a light source positioned adjacent the rotatable cylinder, and an array of optical sensors positioned adjacent the rotatable cylinder. The array of optical sensors may receive the reflected light from the rotatable cylinder. The optical encoder may include a diffuser member positioned on the rotatable cylinder, the light source, and the array of optical sensors.