Actuator, camera module, and camera-mounted device

Patent metadata

Field	Value
Publication number	US-10944909-B2
Application number	US-201716321478-A
Country	US
Kind code	B2
Filing date	Jul 27, 2017
Priority date	Jul 29, 2016
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

An actuator is provided with: the fixed part being formed by arranging either a coil part or a magnet part on a base member on the external peripheral side of the driven part; a movable part having a frame-like holding member for arranging and holding the other of the coil part or the magnet part on the base-member-side surface on the external peripheral side of the driven part; and a support part for inclinably supporting the movable part in relation to the fixed part, the support part being disposed on the base member. The holding member has, on the surface on the opposite side from the base member and farther inward than the arrangement area of either the coil part or the magnet part, a mounting surface part on which a first capturing module and a second capturing module are mounted as driven parts.

First claim

The invention claimed is:

1. An actuator that tilts a driven part for shake correction by using a driving force of a voice coil motor including a coil part and a magnet part, the actuator comprising:
a fixing body that includes a base member and is provided with one of the coil part or the magnet part on the base member on an outer peripheral side of the driven part;
a movable body that includes a frame-shaped holding member that is provided with and holds the other of the coil part or the magnet part on a surface on a side of the base member surface on an outer peripheral side of the driven part; and
a support part that is disposed on the base member and tiltably supports the movable body with respect to the fixing body, wherein
the driven part is a first capturing module and a second capturing module each including a lens part and a capturing device, and
the holding member includes a mounting surface part on which the first capturing module and the second capturing module are mounted on a surface on a side opposite from the base member and more inside than a provided location of one of the coil part or the magnet part.

2. The actuator according to claim 1 , wherein the holding member includes a step that makes the mounting surface part closer to the base member than the provided location of one of the coil part or the magnet part is.

3. The actuator according to claim 1 , wherein the holding member is a yoke made of a magnetic material.

4. The actuator according to claim 1 , wherein the magnet part is disposed in the holding member and the coil part is disposed on the base member.

5. The actuator according to claim 1 , wherein
the mounting surface part is provided in a flat frame shape to which bottom surfaces of the first capturing module and the second capturing module are firmly fixed,
the holding member is provided on an outer peripheral side from an outer edge of the frame-shaped mounting surface part and is formed in a recessed shape opened to a side of the base member, and a bottom surface of this recessed shape includes a holding part body located at a position separated more from the base member than the mounting surface part, and
the holding body fixes and holds, on the bottom surface, one of the coil part or the magnet part.

6. The actuator according to claim 1 , wherein
the support part is made of an elastic support part having a two-axis gimbal mechanism with two rotary shafts orthogonal to each other,
the elastic support member is disposed in an opening inside the holding member such that the two rotary shafts are orthogonal to directions of optical axes of the first and the second capturing modules, the elastic support member being fixed to the holding member by a connection part extending along one of the shafts from a gimbal portion, the elastic support member being fixed to the base member in a central portion connected by a connection part extending along the other shaft from the gimbal portion, and
the first capturing module and the second capturing module are disposed in proximity from the central portion at an equal interval.

7. The actuator according to claim 6 , wherein the coil part and the magnet part are disposed on the outer peripheral side of the elastic support member.

8. The actuator according to claim 1 , wherein
the fixing body further includes a frame-shaped cover member fixed to a peripheral edge of the base member, and
the movable body is placed to be held between the base member and the cover member.

9. The actuator according to claim 1 , wherein
the coil part is provided with a winding shaft of a coil of the coil part oriented in a direction in which the base member and the holding member face each other, and
the magnet part is provided to project in a central part of the coil part.

10. A camera module, comprising:
the actuator according to claim 1 ;
the first capturing module and the second capturing module bonded to the holding member as the driven part; and
a shake detection part that detects shake of the capturing module.

11. The camera module according to claim 10 , wherein at least one of the first capturing module or the second capturing module has an autofocus function.

12. A camera-mounted device that is an information device or a transporting device, the device comprising the camera module according to claim 10 .

Assignees

• Enta Yohei
• Mitsumi Electric Co Ltd

Inventors

• Enta Yohei

Classifications

• H04N23/687 Primary

  by shifting the lens or sensor position · CPC title

• H04N23/6812

  based on additional sensors, e.g. acceleration sensors · CPC title

• H04N23/67

  Focus control based on electronic image sensor signals · CPC title

• H04N23/54 Primary

  Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils · CPC title

• H04N23/45

  for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images · CPC title