Lens driving mechanism, camera module, and optical device

Patent metadata

Field	Value
Publication number	US-12405511-B2
Application number	US-202318524085-A
Country	US
Kind code	B2
Filing date	Nov 30, 2023
Priority date	Apr 28, 2016
Publication date	Sep 2, 2025
Grant date	Sep 2, 2025

Abstract

An embodiment of the present invention relates to a camera module comprising: a housing; a bobbin arranged inside the housing; a first magnet arranged on the bobbin; a first coil arranged in the housing and facing the first magnet; a plurality of lenses attached to the bobbin; and an iris unit coupled to the bobbin, wherein the plurality of lenses comprises a first lens and a second lens distanced from each other, and at least a portion of the iris unit is positioned between the first lens and the second lens.

First claim

The invention claimed is:

1. A camera module comprising:
a housing comprising a first lateral part;
a bobbin disposed in the housing;
a lens module coupled with the bobbin;
a driving coil facing a driving magnet;
first and second blades configured to move together with the bobbin;
a terminal part;
an iris magnet and an iris coil facing each other;
a support member electrically connected with the iris coil; and
an iris sensor configured to sense the iris magnet,
wherein the support member comprises: a first coupling part connected to the terminal part; a second coupling part connected to the iris sensor; and a connection part connecting the first coupling part to the second coupling part,
wherein the first coupling part is disposed on the housing, and the second coupling part is disposed on the bobbin,
wherein the connection part is configured to elastically deform in response to movement of the bobbin, and
wherein the driving magnet and the driving coil are configured to move the bobbin in an optical axis direction with respect to the housing.

2. The camera module of claim 1 , wherein the second coupling part comprises a mounting part disposed with the iris sensor,
wherein the mounting part of the second coupling part is disposed at a position corresponding to the first lateral part of the housing, and
wherein the mounting part of the second coupling part is disposed in a direction parallel with an optical axis.

3. The camera module of claim 1 , comprising:
a PCB (printed circuit board); and
an image sensor disposed on the PCB,
wherein the housing is disposed on the PCB.

4. The camera module of claim 3 , wherein the terminal part is electrically connected with the PCB,
wherein the housing comprises a second lateral part opposite to the first lateral part, and
wherein the terminal part is disposed at a position corresponding to the second lateral part of the housing.

5. The camera module of claim 4 , wherein the terminal part and the PCB are coupled by soldering.

6. The camera module of claim 4 ,
wherein the first coupling part comprises a body part coupled with an upper surface of a bottom plate of the housing, and the terminal part is downwardly bent from the body part, and
wherein the second coupling part comprises a body part coupled with the bobbin, and the mounting part is upwardly bent from the body part of the second coupling part.

7. The camera module of claim 3 , wherein the iris sensor comprises an inner surface facing an inner side and a lower surface facing the PCB, and
wherein an area of the inner surface of the iris sensor is greater than an area of the lower surface of the iris sensor.

8. The camera module of claim 1 , wherein the first and second blades are configured to adjust an amount of light by an interaction of the iris magnet and the iris coil.

9. The camera module of claim 1 , comprising an AF (Auto Focus) sensor configured to sense the driving magnet,
wherein the AF sensor is disposed in the driving coil.

10. The camera module of claim 9 , wherein the AF sensor is disposed in a space in a closed-curve shape of the driving coil.

11. The camera module of claim 1 , wherein the support member is a flexible printed circuit board.

12. The camera module of claim 1 , comprising a ball disposed between the housing and the bobbin.

13. The camera module of claim 12 , wherein the ball is configured to support a movement of the bobbin in an optical axis direction.

14. The camera module of claim 1 , wherein the connection part comprises a first extension part extending toward the second coupling part from the first coupling part, a second extension part extending toward the first coupling part by being bent from the first extension part, and a third extension part extending toward the second coupling part by being bent from the second extension part.

15. An optical device, comprising:
a body;
a camera module of claim 1 disposed on the body; and
a display part disposed on the body and configured to output an image photographed by the camera module.

16. The camera module of claim 1 , wherein a sensing area of the iris sensor is positioned to face the optical axis.

17. The camera module of claim 1 , wherein the iris coil and the iris magnet are configured to move together with the lens module.

18. A camera module comprising:
a housing comprising a first lateral part;
a bobbin disposed in the housing;
a lens module coupled with the bobbin;
a driving magnet and a driving coil configured to move the bobbin in an optical axis direction with respect to the housing;
an iris housing;
first and second blades;
a terminal part;
an iris magnet and an iris coil configured to move the first and second blades;
a support member electrically connected with the iris coil; and
an iris sensor configured to sense the iris magnet,
wherein the support member comprises: a first coupling part disposed on the housing; a second coupling part disposed on the bobbin; and a connection part connecting the first coupling part to the second coupling part,
wherein the connection part is configured to elastically deform in response to movement of the bobbin, and
wherein the first coupling part is connected to the terminal part.

19. The camera module of claim 18 , wherein the support member is a flexible printed circuit board.

20. The camera module of claim 18 , wherein the iris coil and the iris magnet are configured to move together with the lens module.

21. A camera module comprising:
a housing comprising a first lateral part;
a bobbin disposed in the housing;
a lens module coupled with the bobbin;
a driving coil facing a driving magnet;
first and second blades configured to move together with the bobbin;
a terminal part;
an iris magnet and an iris coil facing each other;
a support member electrically connected with the iris coil; and
an iris sensor configured to sense the iris magnet,
wherein the support member is electrically connected with the terminal part,
wherein the driving magnet and the driving coil are configured to move the bobbin in an optical axis direction with respect to the housing, and
wherein the iris coil and the iris magnet are configured to move together with the lens module.

22. The camera module of claim 21 , wherein a sensing area of the iris sensor is positioned to face the optical axis.

23. The camera module of claim 22 , wherein the support member comprises: a first coupling part connected to the terminal part; a second coupling part connected to the iris sensor; and a connection part connecting the first coupling part to the second coupling part, and
wherein the connection part is configured to elastically deform in response to movement of the bobbin.

24. The camera module of claim 23 , wherein the first coupling part is disposed on the housing and the second coupling part is disposed on the bobbin.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Jae Keun
• Ha Tae Min

Classifications

• G03B17/02

  Bodies · CPC title

• G03B13/36

  Autofocus systems · CPC title

• H04N23/75

  by influencing optical camera components · CPC title

• H04N23/55

  Optical parts specially adapted for electronic image sensors; Mounting thereof · CPC title

• H04N23/54

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