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:
Apr. 03, 2018
Filed:
Jan. 17, 2017
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/14 (2006.01); G01B 11/00 (2006.01); G03B 21/20 (2006.01); G02B 26/06 (2006.01); H04N 9/31 (2006.01); G01B 11/26 (2006.01); G01B 11/27 (2006.01); G02B 7/00 (2006.01); G02B 27/28 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2073 (2013.01); G01B 11/26 (2013.01); G01B 11/272 (2013.01); G02B 7/00 (2013.01); G02B 26/06 (2013.01); G02B 27/283 (2013.01); G03B 21/204 (2013.01); H04N 9/3105 (2013.01); H04N 9/3158 (2013.01); H04N 9/3167 (2013.01); H04N 9/3194 (2013.01); G03B 2205/0053 (2013.01);
Abstract
A position detection device includes: a sensor that includes a light emission unit and a light reception unit receiving light emitted from the light emission unit; a driving unit; a gear (transmission gear) that is disposed at a position facing the sensor and is rotated by power from the driving unit; and a control unit that drives the driving unit based on an amount of light received by the light reception unit and detected by the sensor.