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. 15, 2020
Filed:
Jul. 17, 2017
Samsung Electro-mechanics Co., Ltd., Suwon-si, KR;
Jong Woo Lee, Suwon-si, KR;
Joo Hyoung Lee, Suwon-si, KR;
Je Hyuk Ryu, Suwon-si, KR;
Woo Young Choi, Suwon-si, KR;
Yong Woon Ji, Suwon-si, KR;
Soo Woong Lee, Suwon-si, KR;
Byung Joo Hong, Suwon-si, KR;
Joo Yul Ko, Suwon-si, KR;
Samsung Electro-Mechanics Co., Ltd., Suwon-si, KR;
Abstract
An actuator includes a magnet, a driving coil, a driver, and a position detector. The magnet is disposed on one surface of a lens barrel. The driving coil is disposed at a proximity of the magnet. The driver is configured to apply a driving signal to the driving coil to move the lens barrel along an optical axis. The position detector is configured to generate an oscillation signal of which a frequency is changed based on movement of the magnet and configured to compare oscillation signals generated in a first position and a second position of the lens barrel to detect a present position of the lens barrel.