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WO-2026094569-A1 - DRIVE DEVICE, CAMERA MODULE, AND CAMERA-EQUIPPED DEVICE

WO2026094569A1WO 2026094569 A1WO2026094569 A1WO 2026094569A1WO-2026094569-A1

Abstract

This drive device comprises a holding part, an accommodation part, and a driving part which has a magnet and a coil and which moves the holding part with respect to the accommodation part, wherein the holding part has a first wall to which the magnet or the coil is provided and a second wall which sandwiches an optical element holding portion of the holding part, wherein the second wall is configured to be the same weight as the first wall to which the magnet or the coil is provided.

Inventors

  • ARIJI, MAKOTO

Assignees

  • ミツミ電機株式会社

Dates

Publication Date
20260507
Application Date
20251007
Priority Date
20241030

Claims (6)

  1. A holding part capable of holding an optical element, A housing section for housing the aforementioned holding section, A drive unit having a magnet provided in one of the holding portion and the housing portion, and a coil provided in the other of the holding portion and the housing portion, which moves the holding portion relative to the housing portion, Equipped with, The holding portion has a first wall on which the magnet or coil is provided, and a second wall that sandwiches the holding portion of the optical element in the holding portion. The second wall is configured to have the same weight as the first wall on which the magnet or coil is provided. Drive unit.
  2. The second wall includes a weight, The drive device according to claim 1.
  3. The system further includes a support portion that supports the holding portion so that the holding portion floats above the housing portion. The drive device according to claim 1.
  4. The drive device is attached to a device having another drive unit that drives another optical element into which light from the optical element is introduced. At least a portion of the other drive unit is located on one of the pair of walls that sandwich the other optical element, The drive unit is aligned with the one side wall in the direction of introducing light to the other optical element. The drive device according to claim 1.
  5. The drive device according to claim 1, The lens part, The system includes an imaging unit that captures an image of a subject formed by the aforementioned lens unit, Camera module.
  6. A camera-equipped device which is an information device or a transport device, The camera module according to claim 5, The camera module comprises an image processing unit that processes image information obtained by the camera module, A device equipped with a camera.

Description

Drive unit, camera module, and camera mounting device This invention relates to a drive unit, a camera module, and a camera-mounted device. Generally, mobile devices such as smartphones are equipped with a small camera module. Such camera modules utilize a lens drive device that includes an autofocus function (hereinafter referred to as "AF function," or Auto Focus) for automatically focusing on the subject when photographing, and an optical image stabilization (hereinafter referred to as "OIS function," or Optical Image Stabilization) function for optically correcting image distortion caused by camera shake (vibration) during shooting. A lens drive device having AF and OIS functions comprises an autofocus drive unit (hereinafter referred to as the "AF drive unit") for moving the lens portion in the optical axis direction, and a shake correction drive unit (hereinafter referred to as the "OIS drive unit") for oscillating the lens portion in a plane perpendicular to the optical axis direction. Such drive units are known to have a configuration that includes a coil and a magnet for operating a movable part (holding part) that holds an optical element. For example, Patent Document 1 discloses a configuration in which a magnet is provided in the central part of the holding part, and a coil is provided in the part of the housing that houses the holding part that corresponds to the central part. This figure shows a smartphone equipped with a camera module according to one embodiment of the present invention.This figure shows a smartphone equipped with a camera module according to one embodiment of the present invention.Figure 2 is an external perspective view of the camera module.This is an exploded perspective view of the housing, optical path bending module, and lens module.This is an exploded perspective view of the housing and circuit board.This is a view of the camera module from the positive Z-axis.This is a perspective view of the circuit board.This is a perspective view of the optical path bending module.This is a perspective view of the optical path bending module.This is a cross-sectional view of an optical path bending module.This is an exploded perspective view of the prism holder, ball guide, ball, and biasing spring.This is a perspective view of the lens module.This is a perspective view of the lens module.This diagram illustrates the positional relationship between the first groove, the second groove, and the support shaft.This is a cross-sectional view of the lens module.This is a diagram illustrating a variation.This is a diagram illustrating a variation.This is a diagram illustrating a variation.This is a diagram illustrating a variation.This diagram shows an automobile as a camera-mounted device equipped with an in-vehicle camera module.This diagram shows an automobile as a camera-mounted device equipped with an in-vehicle camera module. The embodiments of the present invention will be described in detail below with reference to the drawings. Note that the camera module and camera mounting device described later are examples of the drive device, camera module, and camera mounting device according to the present invention, and the present invention is not limited by these embodiments. Furthermore, the drive device, camera module, and camera mounting device according to the present invention may include all of the configurations described later, or may omit some of the configurations. The camera module 1 is installed in, for example, a smartphone M (see Figures 1A and 1B), a mobile phone, a digital camera, a notebook computer, a tablet device, a portable game console, and a thin camera-equipped device (such as an in-vehicle camera). The smartphone M has a dual camera consisting of two rear cameras OC1 and OC2. In this embodiment, the camera module 1 is applied to the rear camera OC2. The following descriptions of the components constituting the camera module 1 of this embodiment will be based on their assembled state within the camera module 1. Furthermore, the Cartesian coordinate system (X, Y, Z) shown in each figure will be used to describe the structure of the camera module 1 of this embodiment. The camera module 1 is mounted such that, when actual shooting is performed by the camera-mounted device, the X direction corresponds to the left-right direction of the camera-mounted device, the Y direction corresponds to the up-down direction of the camera-mounted device, and the Z direction corresponds to the front-back direction of the camera-mounted device. As shown in Figure 2, the camera module 1 comprises a housing 2, an optical path bending module 3, a lens module 4, an image sensor module 5, and a substrate 6. The housing 2 is a housing that accommodates the optical path bending module 3 and the lens module 4. The housing 2 is configured as a box shape with an opening on the positive side in the Z direction, by which the wall portion 331 (see Figure 3, etc.) described later is attached, allo