Title:
A lens drive, a camera module, and a personal digital assistant with a camera
Document Type and Number:
Japanese Patent JP6056883
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lens drive device that enables reduction in size more than before.SOLUTION: A lens drive device includes: a lens holder that holds a first coil; a lens holder movement part that supports the lens holder; drive magnets that are disposed at four corners of the lens holder movement part, and moves the lens holder in a first direction in cooperation with the first coil; a second coil that moves a movable part including the lens holder, the lens holder movement part and the drive magnet in a second direction and a third direction in cooperation with the drive magnet; a stationary part that has the second coil; a support part that movably supports the movable part with respect to the stationary part; and a position detection part that detects a position of the lens holder movement part. The position detection part is configured to have a first hole element that is disposed to face the first direction with respect to a first drive magnet, and a second hole element that is disposed to face the first direction with respect to a second drive magnet.
Inventors:
Ichiro Hayashi
Youhei Toda
Youhei Toda
Application Number:
JP2015011649A
Publication Date:
January 11, 2017
Filing Date:
January 23, 2015
Export Citation:
Assignee:
MITSUMI ELECTRIC CO.,LTD.
International Classes:
G02B7/04; G02B7/02; G03B5/00; H02K33/02; H04N5/225; H04N5/232
Domestic Patent References:
| JP2011065140A | ||||
| JP2008090023A | ||||
| JP2012008379A | ||||
| JP2011113009A |
Attorney, Agent or Firm:
Koichi Washida
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