Title:
LENS DRIVE DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/032467
Kind Code:
A1
Abstract:
A lens drive device which can be downsized and which is constructed such that, even if the number of spring members is reduced to one in the downsizing, the lens drive device prevents a movable body from being displaced in the direction of a lens’s optical axis a distance greater than or equal to a predetermined distance, from being displaced in the radial direction, from being rotationally displaced about the lens's optical axis, and from tilting relative to the lens’s optical axis. In a lens drive device (1), a gimbal spring-shaped spring member (14) provided with an arm section (14c) is provided only to that end of the movable body (3) which is on the imaging element side in the direction (L) of the lens's optical axis. On that end of the movable body (3) which is on the object side, there are arranged a projection (117) projecting in the direction (L) of the lens’s optical axis, and also a displacement preventing mechanism (1a) for preventing, by means of the projection (117) and a recess (137) fitted over the projection (117), the movable body (3) from being displaced in the direction (L) of the lens’s optical axis a distance greater than or equal to a predetermined distance, from being displaced in the radial direction, from being rotationally displaced about the lens's optical axis, and from being tilting relative to the lens’s optical axis.
Inventors:
FURUYA YUKIO (JP)
SUE TAKESHI (JP)
MORI AKIRA (JP)
SUE TAKESHI (JP)
MORI AKIRA (JP)
Application Number:
PCT/JP2009/004680
Publication Date:
March 25, 2010
Filing Date:
September 17, 2009
Export Citation:
Assignee:
NIDEC SANKYO CORP (JP)
FURUYA YUKIO (JP)
SUE TAKESHI (JP)
MORI AKIRA (JP)
FURUYA YUKIO (JP)
SUE TAKESHI (JP)
MORI AKIRA (JP)
International Classes:
G02B7/04
Foreign References:
| JP2008203719A | 2008-09-04 | |||
| JP2007046561A | 2007-02-22 | |||
| JP2008122470A | 2008-05-29 |
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