Camera module

Patent metadata

Field	Value
Publication number	US-11681202-B2
Application number	US-202016919420-A
Country	US
Kind code	B2
Filing date	Jul 2, 2020
Priority date	Aug 16, 2019
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A camera module includes a lens holder accommodating a lens module therein, a housing accommodating the lens module and the lens holder therein, a shake correction unit including first and second magnets, disposed in the lens holder, and first and second coils disposed to face the first and second magnets, a focusing unit including a third magnet, disposed in the lens module, and a third coil disposed on a first substrate disposed on the lens holder, and a plurality of ball members configured to support movement of the lens module in a direction perpendicular to an optical axis. The lens module, the lens holder, the third magnet, and the third coil are moved together in the direction perpendicular to the optical axis, by driving force of the shake correction unit.

First claim

What is claimed is:

1. A camera module comprising:
a lens holder accommodating a lens module therein;
a housing accommodating the lens module and the lens holder therein;
a shake correction unit comprising first and second magnets, disposed in the lens holder, and first and second coils disposed to face the first and second magnets;
a focusing unit comprising a third magnet, disposed in the lens module, and a third coil disposed on a first substrate disposed on the lens holder; and
a plurality of ball members configured to support movement of the lens module in a direction perpendicular to an optical axis,
wherein the lens module, the lens holder, the third magnet, and the third coil are moved together in the direction perpendicular to the optical axis, by driving force of the shake correction unit,
wherein the first substrate comprises a body portion, provided with the third coil, and an extension portion bent to extend from the body portion,
wherein the extension portion comprises a first extension portion, bent about a direction parallel to the optical axis direction to extend from one side of the body portion to be spaced apart from the body portion, and a second extension portion bent about another direction parallel to the optical axis direction to extend from the first extension portion, which is perpendicular to the first extension portion.

2. The camera module of claim 1 , wherein the first substrate is moved in the direction perpendicular to the optical axis, by the driving force of the shake correction unit in a state in which a portion of the first substrate is connected to the housing.

3. The camera module of claim 1 , wherein the second extension portion is disposed to be spaced apart from a side surface of the lens holder.

4. The camera module of claim 1 , wherein the second extension portion comprises a connection portion configured to receive an electrical signal from an external component, and the connection portion is disposed on the housing.

5. The camera module of claim 1 , wherein the first extension portion is moved in a second axis direction perpendicular to the optical axis, by driving force generated by the second magnet and the second coil.

6. The camera module of claim 5 , wherein the second extension portion is moved in a first axis direction perpendicular to the optical axis, by driving force generated by the first magnet and the first coil.

7. The camera module of claim 1 , wherein the lens module comprises a lens barrel and a carrier coupled to the lens barrel, and
wherein a rolling member is disposed between the carrier and the lens holder.

8. The camera module of claim 7 , wherein a stopper, covering at least a portion of an upper surface of the carrier, is disposed on the lens holder.

9. The camera module of claim 8 , wherein the stopper comprises a protrusion covering an upper portion of the rolling member.

10. The camera module of claim 1 , wherein the third coil is disposed closer to an optical axis of the lens module than the first and second coils.

11. The camera module of claim 1 , wherein the shake correction unit further comprises a frame for guiding the movement of the lens module,
wherein the frame, the lens holder, and the lens module are moved together in a first axis direction perpendicular to the optical axis, by driving force generated by the first magnet and the first coil, and
wherein the lens holder and the lens module are moved in a second axis direction perpendicular to the optical axis, by driving force generated by the second magnet and the second coil.

12. A camera module comprising:
a lens holder accommodating a lens module therein;
a housing accommodating the lens module and the lens holder therein;
a shake correction unit comprising first and second magnets, disposed in the lens holder, and first and second coils disposed to face the first and second magnets;
a focusing unit comprising a third magnet, disposed in the lens module, and a third coil disposed on a first substrate disposed on the lens holder; and
a plurality of ball members configured to guide movement of the lens module in a direction perpendicular to an optical axis,
wherein the first substrate is moved in the direction perpendicular to the optical axis, by driving force of the shake correction unit in a state in which a portion of the first substrate is connected to the housing,
wherein the first substrate comprises a body portion, provided with the third coil, and an extension portion bent to extend from the body portion,
wherein the extension portion comprises a first extension portion, bent about a direction parallel to the optical axis direction to extend from one side of the body portion to be spaced apart from the body portion, and a second extension portion bent about another direction parallel to the optical axis direction to extend from the first extension portion, which is perpendicular to the first extension portion.

13. The camera module of claim 12 , wherein the lens module, the lens holder, the third magnet, and the third coil are moved together in the direction perpendicular to the optical axis, by the driving force of the shake correction unit.

14. The camera module of claim 12 ,
wherein the first extension portion is moved in a second axis direction perpendicular to the optical axis, by driving force generated by the second magnet and the second coil.

15. The camera module of claim 14 , wherein the second extension portion is moved in a first axis direction perpendicular to the optical axis, by driving force generated by the first magnet and the first coil.

16. A camera module comprising:
a lens holder disposed in a housing and configured to move in first and second directions perpendicular to an optical axis direction relative to the housing;
a lens module disposed in the lens holder and configured to move in the optical axis direction relative to the lens holder;
a substrate disposed on the lens holder comprising a body portion configured to move with the lens holder and a connection portion connected to the housing; and
a driving coil disposed on the body portion to face a driving magnet on the lens module to drive the lens module in the optical axis direction,
wherein the substrate comprises a first extension portion extending from a first bent portion connected to a side of the body portion to a second bent portion, and a second extension portion extending from the second bent portion to the connection portion,
wherein the first bent portion is bent about a direction parallel to the optical axis direction, and
wherein the second bent portion is bent about another axis extending in a direction parallel to the optical axis direction.

17. The camera module of claim 16 ,
wherein the first extension portion is configured to move in the first direction relative to the body portion and the second extension portion in response to the lens holder movement in the first direction, and
wherein the second extension portion is configured to move in the second direction relative to the first extension portion and the connection portion in response to the lens holder movement in the second direction.

18. The camera module of claim 16 , further comprising first and second magnets, disposed in the lens holder, and first and second coils disposed to face the first and second magnets to drive the lens holder in the first and second directions.

Assignees

• Samsung Electro Mech

Inventors

• Jeong Bong Won
• Seo Bo Sung
• Lee Jae Hyuk
• Yoon Young Bok
• Kim Sung Hoon
• Lee Jung Seok
• Lim Soo Cheol

Classifications

• G03B13/34 Primary

  Power focusing · CPC title

• G02B27/646 Primary

  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 title

• G03B5/04 Primary

  Vertical adjustment of lens; Rising fronts · CPC title

• G03B2205/0015

  by displacing one or more optical elements normal to the optical axis · CPC title

• G03B2205/0069

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