US 12,111,460 B2
Lens driving device, camera module, and camera-mounted apparatus
Tomohiko Osaka, Tokyo (JP); Ichiro Hayashi, Tokyo (JP); and Atsushi Kikuchi, Tokyo (JP)
Assigned to MITSUMI ELECTRIC CO., LTD., Tokyo (JP)
Appl. No. 17/595,524
Filed by Tomohiko Osaka, Tokyo (JP); Ichiro Hayashi, Tokyo (JP); and Atsushi Kikuchi, Tokyo (JP)
PCT Filed May 22, 2020, PCT No. PCT/JP2020/020217
§ 371(c)(1), (2) Date Nov. 18, 2021,
PCT Pub. No. WO2020/235667, PCT Pub. Date Nov. 26, 2020.
Claims priority of application No. 2019-096197 (JP), filed on May 22, 2019.
Prior Publication US 2022/0206287 A1, Jun. 30, 2022
Int. Cl. G02B 26/08 (2006.01); G02B 3/14 (2006.01); G02B 26/00 (2006.01); G02B 27/64 (2006.01); G03B 13/36 (2021.01); G03B 30/00 (2021.01); H02K 41/035 (2006.01)
CPC G02B 26/0875 (2013.01) [G02B 3/14 (2013.01); G02B 26/004 (2013.01); G03B 13/36 (2013.01); G03B 30/00 (2021.01); H02K 41/0356 (2013.01); G02B 27/646 (2013.01); G03B 2205/0007 (2013.01); G03B 2205/0069 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A lens driving device that applies a force to the liquid lens to change a focal length and an optical axis of the liquid lens, the lens driving device comprising:
a fixed part;
a movable part disposed apart from the fixed part;
a first elastic support member and a second elastic support member that elastically connect the movable part and the fixed part to each other and supports the movable part with respect to the fixed part;
a driving part including a voice coil motor that includes a coil and a magnet, the driving part being for moving the movable part with respect to the fixed part in a direction of the optical axis; and
a lens deforming part connected to the movable part, the lens deforming part being for applying a force to the liquid lens in the direction of the optical axis in accordance with a movement of the movable part, wherein:
the movable part includes a plurality of movable units,
the coil is disposed in each of the plurality of movable units,
the magnet is disposed at each of positions in the fixed part, the positions corresponding to the plurality of movable units,
the plurality of movable units each includes a control Integrated Circuit (IC) that controls energization of the coil,
the first elastic support member is electrically connected to a wiring disposed at the fixed part and a power supply terminal of the control IC, and connects the power supply terminals in adjacent movable units of the plurality of movable units to each other,
the second elastic support member is electrically connected to a wiring disposed at the fixed part and a signal terminal of the control IC, and connects the signal terminals in the adjacent movable units to each other, and
the driving part drives the plurality of movable units independently in such a way that a curvature of the liquid lens changes or the optical axis of the liquid lens changes.