Camera apparatus having autofocus and optical image stabilization functions

Patent metadata

Field	Value
Publication number	US-12526523-B2
Application number	US-202218562417-A
Country	US
Kind code	B2
Filing date	May 13, 2022
Priority date	May 21, 2021
Publication date	Jan 13, 2026
Grant date	Jan 13, 2026

Abstract

The present embodiment relates to a camera device comprising: a fixed part; a first moving part comprising a lens and disposed inside the fixed part; a second moving part comprising an image sensor and disposed inside the fixed part; a first magnet and a second magnet disposed in the fixed part; a first coil disposed in the first moving part and disposed at a position corresponding to the first magnet; and a second coil disposed in the second moving part and disposed at a position corresponding to the second magnet, wherein the first coil moves the first moving part in an optical axis direction, wherein the first magnet is overlapped with the second magnet in the optical axis direction, and wherein the length of the first magnet in the optical axis direction is longer than the length of the second magnet.

First claim

The invention claimed is:

1 . A camera device comprising:
a fixed part; a first moving part comprising a bobbin and a lens coupled to the bobbin and disposed in the fixed part; a second moving part comprising an image sensor and disposed in the fixed part; a first magnet and a second magnet disposed on the fixed part; a first coil disposed on the first moving part and disposed at a position corresponding to the first magnet; and a second coil disposed on the second moving part and disposed at a position corresponding to the second magnet, wherein the first coil is configured to move the first moving part in an optical axis direction, wherein the first magnet is overlapped with the second magnet in the optical axis direction, wherein the first magnet comprises a first unit magnet and a second unit magnet disposed opposite to each other with respect to an optical axis, and a third unit magnet and a fourth unit magnet disposed opposite to each other with respect to the optical axis, wherein the first unit magnet comprises a part protruding to an outside of the bobbin in a x-axis direction perpendicular to the optical axis direction, and wherein the part of the first unit magnet is overlapped with the third unit magnet in a y-axis direction perpendicular to the optical axis direction and the x-axis direction.

2 . The camera device of claim 1 , wherein the first unit magnet comprises a first surface facing the first coil, and
wherein the first unit magnet is overlapped with the third unit magnet in a direction perpendicular to the first surface.

3 . The camera device of claim 2 , wherein, when viewed in a direction in which the first surface faces, a horizontal length of the second coil is greater than a horizontal length of the second magnet.

4 . The camera device of claim 2 , wherein, when viewed from above, the second coil is disposed on an outer side of the bobbin, and
wherein, when viewed in a direction in which the first surface faces, the second coil comprises a part disposed below the bobbin and protruding further than an edge of the bobbin.

5 . The camera device of claim 2 , wherein the third unit magnet is elongated in the direction perpendicular to the first surface.

6 . The camera device of claim 2 , wherein the first unit magnet is not overlapped with the second unit magnet in a direction in which the first surface faces.

7 . The camera device of claim 2 , wherein the fixed part comprises a first side portion between a first corner portion and a second corner portion,
wherein the first unit magnet is elongated on the first side portion in an arrangement direction of the first side portion, and wherein the first unit magnet is disposed closer to the first corner portion than to the second corner portion.

8 . The camera device of claim 7 , wherein the fixed part comprises a third side portion between the first corner portion and a fourth corner portion,
wherein the third unit magnet is elongated on the third side portion in an arrangement direction of the third side portion, and wherein the third unit magnet is disposed closer to the fourth corner portion than to the first corner portion.

9 . The camera device of claim 1 , wherein the part of the first magnet is overlapped with the second coil in the optical axis direction.

10 . The camera device of claim 1 , wherein the second magnet comprises a part not overlapped with the second coil in the optical axis direction.

11 . The camera device of claim 1 , wherein the first magnet comprises a first pole formed on a first surface facing the first coil, and a second pole formed on a second surface opposite to the first surface, and
wherein the second magnet comprises a second pole overlapped with the first pole of the first magnet in the optical axis direction, and a first pole overlapped with the second pole of the first magnet in the optical axis direction.

12 . The camera device of claim 1 , wherein, in the optical axis direction, a length of the first magnet is greater than a length of the second magnet.

13 . The camera device of claim 1 , wherein the first magnet is bonded with the second magnet by an adhesive.

14 . The camera device of claim 1 , comprising a yoke disposed between the first magnet and the second magnet.

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

16 . A camera device comprising:
a fixed part; a first moving part comprising a bobbin and configured to move in an optical axis direction; a second moving part comprising an image sensor and configured to move in a direction perpendicular to the optical axis direction; a first magnet and a second magnet disposed on the fixed part; a first coil disposed on the first moving part and disposed at a position corresponding to the first magnet; and a second coil disposed on the second moving part and disposed at a position corresponding to the second magnet, wherein the bobbin comprises first to fourth side surfaces, wherein the first magnet comprises a first unit magnet disposed to correspond to the first side surface of the bobbin, a second unit magnet disposed to correspond to the second side surface of the bobbin, and a third unit magnet disposed to correspond to the third side surface of the bobbin, wherein the first side surface of the bobbin and the second side surface of the bobbin are disposed opposite to each other in a y-axis direction perpendicular to the optical axis direction, wherein a portion of the first unit magnet is overlapped with the third unit magnet in the y-axis direction, and wherein the first unit magnet, the second unit magnet, and the third unit magnet are configured to move the first moving part in the optical axis direction.

17 . The camera device of claim 16 , wherein the first unit magnet is disposed between a first corner of the fixed part and a second corner of the fixed part and is disposed closer to the first corner than to the second corner.

18 . A camera device comprising:
an image sensor configured to move in a direction perpendicular to an optical axis direction; a housing disposed on the image sensor; a bobbin disposed in the housing; a lens coupled to the bobbin; a first magnet and a second magnet disposed on the housing, wherein the first magnet is configured to move the lens in the optical axis direction, wherein the second magnet is configured to move the image sensor in the direction perpendicular to the optical axis direction, wherein the housing comprises first to fourth side surfaces, wherein the second magnet comprises a first unit magnet disposed to correspond to the first side surface of the housing, a second unit magnet disposed to correspond to the second side surface of the housing, and a third unit magnet disposed to correspond to the third side surface of the housing, wherein the first side surface of the housing and the second side surface of the housing are disposed opposite to each other, wherein a part of the first unit magnet of the second magnet is overlapped with the third unit magnet of the second magnet in a y-axis direction perpendicular to the optical axis direction, and wherein the first magnet is overlapped with the second magnet in the optical axis direction.

19 . The camera device of claim 18 , comprising:
a first coil disposed at a position corresponding to the first magnet;

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Sang Ok
• Kim Jung Cheol
• Kim Hyun Soo

Classifications

• H04N23/55

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

• H04N23/57

  Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices · CPC title

• H04N23/54 Primary

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

• H04N23/51

  Housings · CPC title

• G03B2205/0007

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