CAMERA MODULE

• US 20200137274A1
• Filed: 09/06/2019
• Published: 04/30/2020
• Est. Priority Date: 10/26/2018
• Status: Active Grant

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: LEE, Ta Kyoung, KWON, Young Hwan
• Granted Patent: US 11,102,387 B2
• Time in Patent Office: Days
• CPC Class Codes: G02B 13/001 Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras G02B23/243 takes precedence
• CPC Class Codes: G02B 13/0065 having a beam-folding prism or mirror
• 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 7/102 controlled by a microcomputer cameras with interchangeable lenses G03B17/14
• CPC Class Codes: G03B 17/17 with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
• CPC Class Codes: G03B 2205/0007 Movement of one or more optical elements for control of motion blur imaging systems in general using optical elements for stabilisation of the position of the image G02B27/64
• CPC Class Codes: G03B 2205/0046 Movement of one or more optical elements for zooming for optical zoom lenses in general G02B7/10
• CPC Class Codes: G03B 2205/0053 Driving means for the movement of one or more optical element
• CPC Class Codes: G03B 3/10 Power-operated focusing
• CPC Class Codes: G03B 5/00 Adjustment of optical system relative to image or object surface other than for focusing
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof

Abstract

A camera module includes a housing defining an internal space; a reflection module disposed in the internal space and including a reflective member and a holder movably supported by an inner wall of the housing; and a lens module provided in the internal space, and including lenses aligned in an optical axis direction so that light reflected by the reflective member is incident to the lenses. The lens module includes lens barrels accommodating the lenses, and the plurality of lens barrels move in an approximate optical axis direction in the internal space while being supported by ball bearings. At least two of the lens barrels share a guide groove to guide movements of the ball bearings.

Claims

1. A camera module comprising:

a housing defining an internal space;

a reflection module disposed in the internal space, and comprising a reflective member and a holder movably supported by an inner wall of the housing; and

a lens module provided in the internal space, and comprising lenses aligned in an optical axis direction so that light reflected by the reflective member is incident to the lenses,

wherein the lens module comprises a plurality of lens barrels accommodating the lenses, and the plurality of lens barrels are configured to move in an approximate optical axis direction in the internal space while being supported by ball bearings, and

at least two of the plurality of lens barrels share a guide groove configured to guide movements of the ball bearings.

2. The camera module of claim 1, wherein the guide groove is disposed in a surface of the housing that is parallel to the optical axis direction.

3. The camera module of claim 1, wherein the at least two lens barrels that share the guide groove are configured to implement a zoom function, and another one of the lens barrels is configured to implement an auto-focusing (AF) function.

4. The camera module of claim 1, wherein the at least two lens barrels that share the guide groove are configured to implement a zoom function, and remaining lens barrels, other than the at least two lens barrels, are configured to implement an auto-focusing (AF) function.

5. The camera module of claim 4, wherein the remaining lens barrels comprise one lens barrel.

6. The camera module of claim 1, wherein the plurality of lens barrels comprises a first lens barrel and a second lens barrel, and the first lens barrel and the second lens barrel share the guide groove.

7. The camera module of claim 6, wherein the ball bearings comprise first ball bearings disposed between the housing and the first lens barrel and second ball bearings disposed between the housing and the second lens barrel.

8. The camera module of claim 7, wherein the first lens barrel comprises a first magnet configured to interact with a first coil disposed in the housing, and the second lens barrel comprises a second magnet configured to interact with a second coil disposed in the housing.

9. The camera module of claim 1, wherein the ball bearings are disposed between a bottom surface of the housing and the plurality of lens barrels, and wherein a pulling yoke and a pulling magnet are selectively disposed on the bottom surface of the housing and a lower surface of the plurality of lens barrels.

10. The camera module of claim 9, wherein at least some of the plurality of lens barrels comprises a driving magnet disposed on only one side surface thereof, and wherein the pulling yoke or pulling magnet is biased toward the one side surface on which the driving magnet is disposed with respect to a center of the housing.

11. The camera module of claim 1, wherein the at least two lens barrels that share the guide groove have a same length in the optical axis direction.

12. The camera module of claim 11, wherein the at least two lens barrels that share the guide groove each comprise a lens seating portion and an extending portion extending in the optical axis direction.

13. The camera module of claim 12, wherein each of the extending portions comprises a driving magnet.

14. A camera module comprising:

a housing defining an internal space;

a reflection module disposed in the internal space, and comprising a reflective member and a holder movably supported by an inner wall of the housing; and

a lens module disposed in the internal space, and comprising lenses aligned in an optical axis direction so that light reflected by the reflective member is incident to the lenses,

wherein the lens module comprises a plurality of lens barrels accommodating the lenses, and the plurality of lens barrels are configured to move in an approximate optical axis direction by a driving magnet disposed in the housing and a driving coil disposed in one or more of the lens barrels, and

a pulling yoke and a pulling magnet are selectively disposed on a bottom surface of the housing and a lower surface of one or more of the lens barrels,

wherein the pulling yoke or pulling magnet is biased toward one side surface of the housing with respect to a center of the housing.

15. The camera module of claim 14, wherein some of the plurality of lens barrels comprise a driving magnet on only one side surface.