Camera module

Patent metadata

Field	Value
Publication number	US-12298531-B2
Application number	US-201917277057-A
Country	US
Kind code	B2
Filing date	Oct 7, 2019
Priority date	Oct 8, 2018
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

A camera module may comprise a first camera module and a second camera module spaced apart from the first camera module, wherein: the first camera module comprises a cover, a housing, a bobbin, a first coil, a first magnet, a second coil, a second magnet, and a first sensor; the first magnet comprises a first-first magnet disposed at a position corresponding to a second lateral plate, a first-second magnet disposed at a position corresponding to a third lateral plate, and a first-third magnet disposed at a position corresponding to a fourth lateral plate; and a first dummy member and the first sensor are disposed at a position corresponding to a first lateral plate of the cover.

First claim

The invention claimed is:

1. A camera module comprising:
a first camera module and a second camera module spaced apart from the first camera module, wherein the first camera module comprises:
a cover;
a housing disposed in the cover;
a bobbin disposed in the housing;
a first coil disposed on the bobbin;
a first magnet disposed on the housing;
a second coil facing the first magnet;
a second magnet disposed on the bobbin;
a first sensor detecting the second magnet; and
a balancing member disposed on the bobbin and disposed opposite to the second magnet,
wherein the cover comprises a first lateral plate disposed adjacent to the second camera module, a second lateral plate disposed opposite to the first lateral plate, and a third lateral plate and a fourth lateral plate disposed opposite to each other between the first lateral plate and the second lateral plate,
wherein the first magnet comprises a first-first magnet disposed at a position corresponding to the second lateral plate, a first-second magnet disposed at a position corresponding to the third lateral plate, and a first-third magnet disposed at a position corresponding to the fourth lateral plate,
wherein a first dummy member is disposed at a position corresponding to the first lateral plate of the cover,
wherein the second coil comprises a second-first coil facing the first-first magnet, a second-second coil facing the first-second magnet, and a second-third coil facing the first-third magnet,
wherein a number of turns of a coil wound in the second-first coil is greater than a number of turns of a coil wound in the second-second coil,
wherein a yoke is disposed on the first-first magnet,
wherein the first dummy member comprises two dummy members spaced apart from each other,
wherein the first camera module comprises a first substrate,
wherein at least a portion of the first substrate is disposed between the two dummy members,
wherein the first sensor is disposed on an inner surface of the first substrate, and
wherein the first substrate has two distal ends, an outer lateral surface of each distal end of the first substrate contacting an inner lateral surface of each dummy member, respectively.

2. The camera module of claim 1 ,
wherein the first sensor is disposed between the two dummy members, and
wherein the bobbin comprises a cutout portion opened so that a portion of an outer surface of the second magnet is visible.

3. The camera module of claim 1 , wherein when viewed from below the second magnet is disposed between the two dummy members.

4. The camera module of claim 2 , wherein the first camera module comprises an upper elastic member coupled to an upper portion of the bobbin and an upper portion of the housing,
wherein the upper elastic member comprises four upper elastic units,
wherein the first substrate comprises four terminals formed on an upper portion of an outer surface of the first substrate, and
wherein the four upper elastic units are electrically connected with the four terminals, respectively.

5. The camera module of claim 4 , wherein the first camera module comprises a lower elastic member coupled to a lower portion of the bobbin and a lower portion of the housing,
wherein the lower elastic member comprises two lower elastic units,
wherein the first substrate comprises two terminals formed on a lower portion the first substrate, and
wherein the two lower elastic units electrically connect the first coil and the two terminals of the first substrate, respectively.

6. The camera module of claim 5 , wherein the first camera module comprises
a base disposed below the housing;
a second substrate disposed on an upper surface of the base; and
four wires connecting the four upper elastic units and the second substrate, respectively,
wherein the second coil is disposed on the second substrate, and
wherein a number of turns of a coil wound in the second-third coil corresponds to the number of turns of the coil wound in the second-second coil.

7. The camera module of claim 6 , wherein the first coil comprises a first-first coil facing the first-second magnet and a first-second coil facing the first-third magnet, and
wherein the first coil does not face the first-first magnet.

8. The camera module of claim 7 , wherein the first-first magnet is a two-pole magnet, an inner surface and an outer surface of the first-first magnet having different polarities, and
wherein each of the first-second magnet and the first-third magnet is a four-pole magnet in which an upper portion of an inner surface has a polarity different from that of a lower portion of the inner surface and an upper portion of an outer surface and has same polarity as that of a lower portion of the outer surface.

9. The camera module of claim 1 , wherein the first dummy member is a non-magnetic body,
wherein the first dummy member has a weight corresponding to a weight of the first-first magnet,
wherein the first magnet is not disposed at a position corresponding to the first lateral plate of the cover, and
wherein the yoke is disposed at a position opposite to the first dummy member with respect to the bobbin.

10. The camera module of claim 1 , wherein the first-second magnet is overlapped with the first-third magnet in a direction from the first-second magnet toward the first-third magnet.

11. The camera module of claim 1 , wherein the first-first magnet is overlapped with the first dummy member in a direction from the first-first magnet toward the first dummy member.

12. The camera module of claim 1 , wherein the second coil is not disposed at a position overlapped with the first dummy member in an optical axis direction.

13. The camera module of claim 1 , wherein the first dummy member is disposed on the housing to be opposite to the first-first magnet.

14. The camera module of claim 1 , wherein the second magnet is disposed on a lateral surface of the bobbin facing the first lateral plate of the cover.

15. An optical apparatus comprising:
a main body;
a display disposed on the main body; and
the camera module of claim 1 disposed on the main body.

16. A camera module comprising:
a first camera module and a second camera module,
wherein the first camera module comprises a cover, a bobbin disposed in the cover, a first coil disposed on the bobbin, a first magnet facing the first coil, a second coil disposed below the first magnet, a second magnet disposed on the bobbin, a first sensor detecting the second magnet, and a balancing member disposed on the bobbin and disposed opposite to the second magnet,
wherein the second camera module comprises a cover, a bobbin disposed in the cover of the second camera module, a first coil disposed on the bobbin of the second camera module, a first magnet facing the first coil of the second camera module, a second coil disposed below the first magnet of the second camera module, a second magnet disposed on the bobbin of the second camera module, and a second sensor for detecting the second magnet of the second camera module,
wherein each of the cover of the first camera module and the cover of the second camera module comprises a first lateral plate disposed adjacent to each other, a second lateral plate disposed opposite the first lateral plate, and a third lateral plate and a fourth lateral plate disposed opposite to each other between the first lateral plate and the second lateral plate,
wherein the first magnet of the first camera module comprises a first-first magnet disposed at a position corresponding to the second lateral plate of the first camera module, a f

Assignees

• Lg Innotek Co Ltd

Inventors

• Min Sang Jun
• Park Sang Ok

Classifications

• G03B30/00

  Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles · CPC title

• G03B2205/0069

  using electromagnetic actuators, e.g. voice coils · CPC title

• G03B19/22

  Double cameras · CPC title

• G03B3/10

  Power-operated focusing · CPC title

• G03B2205/0007

  Movement of one or more optical elements for control of motion blur · CPC title