Camera module having a moving frame

• US 9,832,383 B2
• Filed: 08/10/2016
• Issued: 11/28/2017
• Est. Priority Date: 08/19/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hwang, Young-jae, Byon, Kwang-seok, Lee, Seung-hwan, Jung, Bong-su
• Primary Examiner(s): CHEN, CHIA WEI A
• Application Number:
  US15/232,995
• Publication Number:
  US 20160353029A1
• Time in Patent Office: 475 Days
• Field of Search: 34820799
• CPC Class Codes: G02B 27/646 compensating for small deviations, e.g. due to vibration or shake movement of one or more optical elements for control of motion blur in cameras, projectors or printers G03B2205/0007; image stabilisation in cameras peculiar to the presence or use of an electronic image sensor H04N23/68
• CPC Class Codes: G02B 7/08 adapted to co-operate with a remote control mechanism
• CPC Class Codes: G02B 7/09 adapted for automatic focusing or varying magnification
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position

Abstract

A camera module includes a lens barrel including at least one lens group; a moving frame that includes the lens barrel and moves in an optical axis direction and in a first direction and a second direction that are perpendicular to the optical axis direction; a fixed frame that movably supports the moving frame and provides the moving frame with a driving force in the optical axis direction, a driving force in the first direction, and a driving force in the second direction; and a base that fixes the fixed frame and includes an image sensor that is spaced apart from the at least one lens group in the optical axis direction.

Claims

1. A camera module comprising:

a lens barrel including at least one lens;

a moving frame in which the lens barrel is mounted, the moving frame movable in an optical axis direction, a first direction, or a second direction perpendicular to the optical axis direction;

a fixed frame adapted to support the moving frame, the fixed frame including a flexible printed circuit board disposed on at least two sides of the fixed frame and adapted to provide a path for current to be used to move the moving frame in one or more directions of the optical axis direction, the first direction, or the second direction; and

a base on which the fixed frame is fixed, the base including an image sensor disposed thereon and spaced apart from the at least one lens in the optical axis direction;

wherein the fixed frame includes a plurality of driving coils adapted to move the moving frame in the optical axis direction, the first direction, or the second direction,

wherein the flexible printed circuit board includes the plurality of driving coils disposed thereon, the plurality of driving coils including a first driving coil, a second driving coil, or a third driving coil, the first driving coil adapted to move the moving frame in the optical axis direction, the second driving coil adapted to move the moving frame in the first direction, and the third driving coil adapted to move the moving frame in the second direction.

2. The camera module of claim 1, wherein the moving frame comprises a plurality of a first magnet corresponding to the first driving coil, a second magnet corresponding to the second driving coil, or a third magnet corresponding to the third driving coil.

3. The camera module of claim 2, wherein the first, second, and third driving coils are spaced apart from the first magnet, the second magnet, and the third magnet, respectively, in a direction perpendicular to the optical axis direction.

4. The camera module of claim 2, wherein the moving frame comprises a groove portion into which the first magnet, the second magnet, or the third magnet is inserted.

5. The camera module of claim 1, wherein the moving frame comprises:

a first moving frame that is movably supported by the fixed frame in the optical axis direction; and

a second moving frame that is movably supported by the first moving frame in the first direction or the second direction.

6. The camera module of claim 5, wherein the first moving frame comprises:

a first guide groove formed thereon and adapted to guide a first plurality of ball bearings disposed between the first moving frame and the fixed frame in the optical axis direction.

7. The camera module of claim 6, wherein the first moving frame comprises:

a second guide groove formed thereon and adapted to guide a second plurality of ball bearings disposed between the first moving frame and the second moving frame in the first direction or the second direction.

8. The camera module of claim 7, wherein the second moving frame comprises:

a first sub-moving frame adapted to move in the first direction; and

a second sub-moving frame adapted to move in the second direction, wherein the second magnet and the third magnet are disposed at a first side and a second side of the second sub-moving frame, respectively.

9. The camera module of claim 8, wherein the second sub-moving frame is movably supported by the first sub-moving frame in the second direction, and the first sub-moving frame is movably supported by the first moving frame in the first direction.

10. The camera module of claim 9, wherein the second sub-moving frame comprises:

a third guide groove formed thereon and adapted to guide a third plurality of ball bearings in the second axis direction.

11. An apparatus comprising:

a camera module to capture one or more images, the camera module including;

a lens barrel including at least one lens;

a moving frame in which the lens barrel is mounted, the moving frame movable in an optical axis direction, a first direction, or a second direction perpendicular to the optical axis direction;

a fixed frame adapted to support the moving frame, the fixed frame including a flexible printed circuit board disposed on at least two sides of the fixed frame and adapted to provide a path for current to be used to move the moving frame in one or more directions of the optical axis direction, the first direction, or the second direction; and

a base on which the fixed frame is fixed, the base including an image sensor disposed thereon and spaced apart from the at least one lens in the optical axis direction; and

a processor adapted to control the current to adjust movement of the moving frame;

wherein the fixed frame includes a driving coil adapted to move the moving frame in the second direction;

wherein the flexible printed circuit board includes the plurality of driving coils disposed thereon, the plurality of driving coils including a first driving coil, a second driving coil, or a third driving coil, the first driving coil adapted to move the moving frame in the optical axis direction, the second driving coil adapted to move the moving frame in the first direction, and the third driving coil adapted to move the moving frame in the second direction.

12. The apparatus of claim 11, wherein the moving frame comprises a plurality of a first magnet, a second magnet, or a third magnet, the first magnet to be used to move the moving frame in the optical axis direction, the second magnet to be used to move the moving frame in the first direction, and the third magnet to be used to move the moving frame in the second direction, and wherein the flexible printed circuit board comprises a plurality of a first sensor corresponding to the first magnet, a second sensor corresponding to the second magnet, or a third sensor corresponding to the third magnet.

13. The apparatus of claim 12, wherein the first sensor, the second sensor, or the third sensor is adapted to detect magnetic force caused by the first magnet, the second magnet, or the third magnet, respectively.

14. The apparatus of claim 12, wherein the processor is adapted to:

detect a first position of the first magnet in the optical axis direction, a second position of the second magnet in the first direction, or a third position of the third magnet in the second direction using the first sensor, the second sensor, or the third sensor, respectively.

15. The apparatus of claim 12, wherein the flexible printed circuit board comprises the driving coil disposed thereon, wherein the third magnet is disposed at one side of the moving frame, and wherein the third sensor is disposed in the driving coil.

16. An apparatus comprising:

a camera module to capture one or more images, the camera module including;

a lens barrel including at least one lens;

a moving frame in which the lens barrel is mounted, the moving frame movable in a first direction or a second direction perpendicular to an optical axis;

a fixed frame adapted to support the moving frame, the fixed frame including a flexible printed circuit board disposed on a plurality of sides of the fixed frame and adapted to provide a path for current to be used to move the moving frame in one or more directions of the first direction or the second direction;

a base on which the fixed frame is fixed, the base including an image sensor disposed thereon and spaced apart from the at least one lens; and

a processor adapted to control the current to control movement of the moving frame;

wherein the fixed frame includes a plurality of driving coils adapted to move the moving frame in the first direction or the second direction;

wherein the flexible printed circuit board comprises the plurality of driving coils disposed thereon, the plurality of driving coils including a first driving coil and a second driving coil, the first driving coil adapted to move the moving frame in the first direction and the second driving coil adapted to move the moving frame in the second direction.

17. The apparatus of claim 16, wherein the moving frame comprises a first magnet and a second magnet, the first magnet to be used to move the moving frame in the first direction, and the second magnet to be used to move the moving frame in the second direction, and wherein the flexible printed circuit board comprises a first sensor aligned with the first magnet and a second sensor aligned with the second magnet.

18. The apparatus of claim 17, wherein the processor is adapted to:

detect a first position of the first magnet in the first direction using the first sensor, or a second position of the second magnet in the second direction using the second sensor.