Title:
LENS DRIVING APPARATUS, AND CAMERA MODULE AND OPTICAL DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2019/066400
Kind Code:
A1
Abstract:
An embodiment comprises: a housing; a bobbin which is placed inside the housing and moves along an optical axis; a coil which is placed on the bobbin and to which a driving signal and a sensing signal are provided; magnets which are placed on the housing; and a position sensor which is placed on the housing. The position sensor senses the position of the bobbin by means of a magnetic field generated by means of the coil. The magnets comprise a first magnet and a second magnet. The position sensor is placed adjacent to the first magnet and/or the second magnet. The position sensor and the first magnet and/or the second magnet do not overlap in the direction from the position sensor to the optical axis.
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Inventors:
PARK SANG OK (KR)
Application Number:
PCT/KR2018/011223
Publication Date:
April 04, 2019
Filing Date:
September 21, 2018
Export Citation:
Assignee:
LG INNOTEK CO LTD (KR)
International Classes:
G03B13/36; G02B7/02; G02B7/28; G03B3/02; G03B17/12
Foreign References:
| KR20150051097A | 2015-05-11 | |||
| KR100918816B1 | 2009-09-25 | |||
| KR20170050946A | 2017-05-11 | |||
| JP2012256017A | 2012-12-27 | |||
| KR20070120260A | 2007-12-24 |
Attorney, Agent or Firm:
LEE, Seung Chan (KR)
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