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. 02, 2014
Filed:
Aug. 03, 2012
Applicants:
Soichiro Katsumata, Tokyo, JP;
Naoyuki Ohno, Tokyo, JP;
Inventors:
Soichiro Katsumata, Tokyo, JP;
Naoyuki Ohno, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/262 (2006.01); H04N 5/232 (2006.01); H04N 5/225 (2006.01); G01D 5/244 (2006.01); G02B 7/10 (2006.01); G01D 1/00 (2006.01);
U.S. Cl.
CPC ...
G01D 5/24485 (2013.01); G03B 2205/0046 (2013.01); H04N 5/225 (2013.01); G02B 7/10 (2013.01); G01D 1/00 (2013.01);
Abstract
There is provided a position detection device including a first detection sensor that operates in a predetermined direction, outputs a continuously increasing or decreasing signal, and detects an absolute position of a movable lens moved in an optical axis direction, and a second detection sensor that operates in the predetermined direction, outputs a periodically and continuously changing signal, and detects a relative position of the movable lens. The first detection sensor and the second detection sensor operate at different operation speeds.