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:
Oct. 22, 2019
Filed:
Jul. 12, 2017
Applicant:
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Inventors:
Woo Young Choi, Suwon-si, KR;
Soo Woong Lee, Suwon-si, KR;
Jong Woo Lee, Suwon-si, KR;
Joo Yul Ko, Suwon-si, KR;
Assignee:
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 7/09 (2006.01); G02B 7/105 (2006.01); G02B 3/10 (2006.01); H04N 5/235 (2006.01); G03B 3/10 (2006.01); G02B 13/00 (2006.01); H04N 5/225 (2006.01); H04N 5/232 (2006.01);
U.S. Cl.
CPC ...
G02B 7/09 (2013.01); G02B 7/105 (2013.01); G02B 13/001 (2013.01); G03B 3/10 (2013.01); H04N 5/2357 (2013.01); G03B 2205/0007 (2013.01); G03B 2205/0038 (2013.01); G03B 2205/0069 (2013.01); H04N 5/2254 (2013.01); H04N 5/2257 (2013.01); H04N 5/23287 (2013.01);
Abstract
An actuator of a camera module includes a magnet, a coil facing the magnet, a driver configured to apply a driving signal to the coil to move the magnet in a direction, and a position estimator. The position estimator is configured to convert an oscillation signal into a digital signal in a delta sigma modulation scheme, and estimate the position of the magnet from the digital signal. A frequency of the oscillation signal varies based on a position of the magnet.