CN-121986300-A - Lens driving device, camera device and optical apparatus

Abstract

The embodiment relates to a lens driving apparatus including a base, an AF carrier provided on the base, an OIS carrier provided in the AF carrier, a first driving unit for moving the AF carrier in an optical axis direction, a second driving unit for moving the OIS carrier in a direction perpendicular to the optical axis direction, and a substrate including an outer portion provided on the base, an inner portion provided on the AF carrier, and a connection portion connecting the outer portion and the inner portion, wherein the connection portion of the substrate is integrally formed with the outer portion of the substrate and the inner portion of the substrate, and the second driving unit includes a first coil provided on the substrate and a first magnet provided on the OIS carrier.

Inventors

• Quan Duixun
• Lu Yangao
• Zhang Xianzhun
• JIN YINGHAO

Assignees

• LG伊诺特有限公司

Dates

Publication Date

20260505

Application Date

20241004

Priority Date

20231010

Claims (10)

1. 1. A lens driving apparatus, the lens driving apparatus comprising: A base; an AF carrier provided on the base; An OIS carrier disposed in the AF carrier; A first driving unit configured to move the AF carrier in an optical axis direction; A second driving unit configured to move the OIS carrier in a direction perpendicular to the optical axis direction, and A substrate including an outer portion provided on the base, an inner portion provided on the AF carrier, and a connection portion connecting the outer portion and the inner portion, Wherein the connection portion of the substrate is integrally formed with the outer portion of the substrate and the inner portion of the substrate, and Wherein the second drive unit comprises a first coil disposed on the substrate and a first magnet disposed on the OIS carrier.
2. 2. The lens driving apparatus according to claim 1, wherein the first driving unit includes a third coil provided on the substrate and a third magnet provided on the base.
3. 3. The lens driving apparatus of claim 1, wherein the second driving unit comprises a second coil disposed on the substrate and a second magnet disposed on the OIS carrier.
4. 4. A lens driving apparatus according to claim 3, wherein the first driving unit includes a third coil provided on the substrate and a third magnet provided on the base.
5. 5. The lens driving apparatus according to claim 1, wherein the connection portion of the substrate may include a first bending portion bent from the outer portion of the substrate, a second bending portion bent from the inner portion of the substrate, and a third bending portion formed between the first and second bending portions.
6. 6. The lens driving apparatus according to claim 5, wherein the first bending portion of the substrate is bent around a first axis, Wherein the second bending part of the substrate is bent around a second axis, Wherein the third bending portion of the substrate is bent around a third axis, and Wherein the first axis, the second axis and the third axis are parallel to each other.
7. 7. The lens driving apparatus according to claim 5, wherein a radius of curvature of the third bending portion is larger than a radius of curvature of the first bending portion, and Wherein the radius of curvature of the third bending part is larger than the radius of curvature of the second bending part.
8. 8. The lens driving apparatus according to claim 5, wherein the third bending portion is provided at the same height as the first bending portion.
9. 9. The lens driving apparatus according to claim 5, wherein the third bending portion is provided at a position higher than the first bending portion when the AF carrier is moved.
10. 10. The lens driving apparatus according to claim 5, wherein the third bending portion is provided at a position lower than the first bending portion when the AF carrier is moved.

Description

Lens driving device, camera device and optical apparatus Technical Field The present embodiment relates to a lens driving device, a camera device, and an optical apparatus. Background The camera device is a device that takes a picture or video of an object, and is mounted in an optical device such as a smart phone, a drone, and a vehicle. An auto-focusing function of automatically adjusting a focus according to a distance of an object is applied to a camera device. In addition, a hand shake correction function driven to compensate for the hand shake of the user is applied. At this time, a ball may be provided between the moving unit and the fixed unit to guide the moving unit to move in the optical axis direction. However, in the lens driving apparatus of the related art, there is a problem in that a height relationship between the OIS coil and the OIS magnet in the optical axis direction varies according to the AF driving in accordance with the position of the moving unit, thereby complicating control of the OIS driving. (Patent document 1) KR 10-2015-018005A. Disclosure of Invention Subject matter of the technology The present embodiment aims to provide a lens driving apparatus in which a height relationship between an OIS coil and an OIS magnet in an optical axis direction is kept unchanged even when a position of a mobile unit is changed according to AF driving. In addition, the present embodiment aims to provide a lens driving apparatus that improves a phenomenon in which hall resolution deteriorates as the distance between a position detection sensor and a magnet increases during OIS driving. In addition, the present embodiment aims to provide a lens driving apparatus including a substrate for conducting current of a coil provided in a moving unit. In addition, the present embodiment aims to provide a lens driving apparatus that minimizes the product size by optimizing the arrangement structure in the fixed unit, the moving unit, the balls, the elastic member, and the wires inside the actuator. That is, the present invention aims to provide a lens driving device having at least a partial mismatch structure in the optical axis, the central axis of the ball, the central axis of the driving unit and the central axis of the wire, and the central axis of the outer periphery of the lens driving unit. In addition, the present embodiment aims to provide a lens driving apparatus that minimizes the thickness of an injection molded product by a reinforcing member, thereby minimizing the product size. Technical proposal The lens driving apparatus according to the present embodiment may include a base, an AF carrier disposed on the base, an OIS carrier disposed inside the AF carrier, a first driving unit moving the AF carrier in an optical axis direction, a second driving unit moving the OIS carrier in a direction perpendicular to the optical axis direction, and a substrate including an outer portion disposed on the base, an inner portion disposed on the AF carrier, and a connection portion connecting the outer portion and the inner portion, wherein the connection portion of the substrate is integrally formed with the outer portion of the substrate and the inner portion of the substrate, and wherein the second driving unit includes a first coil disposed in the substrate and a first magnet disposed in the OIS carrier. The first driving unit may include a third coil disposed in the substrate and a third magnet disposed in the base. The second driving unit may include a second coil disposed on the substrate and a second magnet disposed on the OIS carrier. The connection portion of the substrate may include a first bending portion bent from an outer portion of the substrate, a second bending portion bent from an inner portion of the substrate, and a third bending portion formed between the first and second bending portions. The first bending portion of the substrate is bent around the first axis, the second bending portion of the substrate is bent around the second axis, the third bending portion of the substrate is bent around the third axis, and the first axis, the second axis, and the third axis may be parallel to each other. The radius of curvature of the third bending portion may be greater than the radius of curvature of the first bending portion, and the radius of curvature of the third bending portion may be greater than the radius of curvature of the second bending portion. The third bending portion may be disposed at the same height as the first bending portion. As the AF carrier moves, the third bending portion may be disposed at a higher position than the first bending portion. As the AF carrier moves, the third bending portion may be disposed at a lower position than the first bending portion. The third bending portion may overlap the second bending portion in the optical axis direction. The third bending portion may overlap the inner portion in the optical axis direction. The connection portion of the su