IMAGE STABILIZATION DRIVING ASSEMBLY

• US 20100265343A1
• Filed: 03/30/2010
• Published: 10/21/2010
• Est. Priority Date: 04/20/2009
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Byon, Kwang-seok, Lee, Kyung-bae, Lee, Seung-hwan
• Granted Patent: US 8,269,840 B2
• Time in Patent Office: Days
• US Class Current: 348/208.700
• 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: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations

Abstract

An image stabilization driving assembly that corrects a shake of a digital camera includes a driving plate in which a correction lens is mounted and that operates in a direction perpendicular to an optical axis; a base plate that supports the driving plate at a rear of the driving plate; a tilt correction plate fastened at a rear of the base plate and that adjusts the fastening degree and corrects tilting of the driving plate; and a plurality of suspension wires having one end fixed to the driving plate, another end fixed to the tilt correction plate, and extending through the base plate. The plurality of suspension wires may be formed of an elastic material.

Claims

1. An image stabilization driving assembly for correcting a camera shake comprising:

a driving plate in which a correction lens is mounted and that operates in a direction perpendicular to an optical axis;

a base plate that supports the driving plate at a rear of the driving plate;

a tilt correction plate fastened at a rear of the base plate and that adjusts the fastening degree and corrects tilting of the driving plate; and

a plurality of suspension wires having one end fixed to the driving plate, another end fixed to the tilt correction plate, and extending through the base plate, the plurality of suspension wires formed of an elastic material.

2. The image stabilization driving assembly of claim 1, wherein the base plate and the tilt correction plate are screwed into each other.

3. The image stabilization driving assembly of claim 2, wherein the base plate and the tilt correction plate are screwed into each other in different first, second, and third positions.

4. The image stabilization driving assembly of claim 3, wherein two elastic members that apply an elastic bias in directions against the base plate and the tilt correction plate are disposed in the first and second positions.

5. The image stabilization driving assembly of claim 4, wherein at least one of the respective elastic members is a cylindrical hollow member that includes an assembly hole into which a screw member is inserted.

6. The image stabilization driving assembly of claim 4, wherein at least one of the elastic members comprises a plate member including the assembly hole into which the screw member is inserted and an elastically bent leg portion extending from the plate member.

7. The image stabilization driving assembly of claim 3, wherein a rigid boss member that secures a predetermined space between the base plate and the tilt correction plate is disposed in the third position.

8. The image stabilization driving assembly of claim 1, further comprising:

a voice coil motor (VCM) magnet and a VCM coil disposed on two surfaces where the driving plate and the tilt correction plate face each other and that perform an electromagnetic correlation.

9. The image stabilization driving assembly of claim 8, wherein the VCM magnet is disposed in the driving plate and the VCM coil is disposed in the base plate.

10. The image stabilization driving assembly of claim 8, wherein the VCM magnet is disposed in the base plate and the VCM coil is disposed in the driving plate.

11. The image stabilization driving assembly of claim 8, wherein the VCM magnet comprises a pair of first magnets and a pair of second magnets disposed on both sides of the optical axis, respectively,

wherein the first magnets are disposed to invert N-S polarity in a first direction, and the second magnets are disposed to invert the N-S polarity in a second direction.

12. The image stabilization driving assembly of claim 8, wherein the VCM magnet comprises a pair of unified magnets disposed on both sides of the optical axis,

wherein the unified magnets are magnetized to have a portion where the N-S polarity is inverted in a first direction and have another portion where the N-S polarity is inverted in a second direction.

13. The image stabilization driving assembly of claim 8, wherein the VCM coil comprises a pair of first coils and a pair of second coils disposed on both sides of the optical axis, respectively.

14. An image stabilization driving assembly for correcting a camera shake comprising:

a driving plate in which a correction lens is mounted and that operates in a direction perpendicular to an optical axis;

a base plate that supports the driving plate at a rear of the driving plate;

a plurality of suspension wires that elastically connect the driving plate and the base plate; and

a pair of driving units that provide a driving force to the driving plate and that are disposed on both sides of the optical axis.

15. The image stabilization driving assembly of claim 14, wherein the pair of driving units comprises a pair of first direction driving units and a pair of second direction driving units that produce a driving force in first and second directions, respectively, perpendicular to the optical axis,

wherein the pair of first direction driving units and the pair of second direction driving units are disposed on both sides of the optical axis, respectively.

16. The image stabilization driving assembly of claim 14, wherein the pair of driving units comprises a VCM magnet and a VCM coil disposed on two surfaces where the driving plate and the tilt correction plate face each other and that perform an electromagnetic correlation.

17. The image stabilization driving assembly of claim 16, wherein the VCM magnet is disposed in the driving plate and the VCM coil is disposed in the base plate.

18. The image stabilization driving assembly of claim 16, wherein the VCM magnet is disposed in the base plate and the VCM coil is disposed in the driving plate.

19. The image stabilization driving assembly of claim 16, wherein the VCM magnet comprises a pair of first magnets and a pair of second magnets disposed on both sides of the optical axis, respectively,

wherein the first magnets are disposed to invert N-S polarity in a first direction, and the second magnets are disposed to invert the N-S polarity in a second direction.

20. The image stabilization driving assembly of claim 16, wherein the VCM magnet comprises a pair of unified magnets disposed on both sides of the optical axis,

wherein the unified magnets are magnetized to have a portion where the N-S polarity is inverted in a first direction and have another portion where the N-S polarity is inverted in a second direction.

21. The image stabilization driving assembly of claim 16, wherein the VCM coil comprises a pair of first coils and a pair of second coils disposed on both sides of the optical axis, respectively.