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. 08, 2020
Filed:
Mar. 01, 2019
Applicant:
Michael Naor, Rehovot, IL;
Inventor:
Michael Naor, Rehovot, IL;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/34 (2006.01); G01D 5/347 (2006.01); G01D 5/38 (2006.01); G01M 15/06 (2006.01); G11B 7/0065 (2006.01); G11B 7/007 (2006.01); G11B 7/08 (2006.01); G11B 7/09 (2006.01); G11B 7/131 (2012.01); G11B 7/1353 (2012.01); G11B 7/1374 (2012.01);
U.S. Cl.
CPC ...
G01D 5/34715 (2013.01); G01D 5/34707 (2013.01); G01D 5/34746 (2013.01); G01D 5/34792 (2013.01); G01D 5/38 (2013.01); G01M 15/06 (2013.01); G11B 7/0065 (2013.01); G11B 7/00772 (2013.01); G11B 7/083 (2013.01); G11B 7/093 (2013.01); G11B 7/131 (2013.01); G11B 7/1353 (2013.01); G11B 7/1374 (2013.01);
Abstract
An improved optical encoder uses an optical pick-up unit that provides for degrees of freedom in the tracking and focus axes that are unavailable in conventional optical encoders thereby improving the encoders' performance. In an embodiment the encoder employs an optical disc marked with pits and lands which may be arranged in a spiral pattern. The optical disc is mounted on the shaft whose motion is to be monitored by the optical encoder. The encoder may be arranged to read the markings on the optical disc using the three-beam pickup method.