Optical adjusting apparatus

Patent metadata

Field	Value
Publication number	US-9420183-B2
Application number	US-201313921390-A
Country	US
Kind code	B2
Filing date	Jun 19, 2013
Priority date	Dec 12, 2012
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

The present disclosure relates to an optical adjusting apparatus having an optical adjusting lens for image stabilization and auto focusing, which includes a lens holder that supports the optical adjusting lens; at least one image stabilization VCM actuator unit that moves the lens holder perpendicular to an optical axis of the optical adjusting lens, the image stabilization VCM actuator unit including a magnet with a neutral zone parallel to the optical axis; and an auto focusing VCM actuator unit that moves the lens holder in an optical axis direction, the auto focusing VCM actuator unit including a magnet with a neutral zone orthogonal to the optical axis.

First claim

What is claimed is:

1. An optical adjusting apparatus having an optical adjusting lens for image stabilization and auto focusing comprising:
a lens holder that supports the optical adjusting lens;
at least one image stabilization voice coil motor (VCM) actuator unit that moves the lens holder perpendicular to an optical axis of the optical adjusting lens;
a first base that supports the lens holder such that the lens holder moves in a direction perpendicular to the optical axis,
a second a base that supports the first base such that the first base moves in the optical axis direction; and
an auto focusing VCM actuator unit that moves the lens holder in an optical axis direction, the auto focusing VCM actuator comprises:
an auto focusing magnet that moves with the lens holder; and
an auto focusing coil disposed opposite to the auto focusing magnet,
wherein the auto focusing magnet is disposed between the lens holder and the auto focusing coil, and the auto focusing coil interacts with the auto focusing magnet to move the lens holder in the optical axis direction,

wherein a plurality of ball bearings are disposed between the first base and the lens holder and a plurality of ball bearing are disposed between the first base and the second base.

2. The optical adjusting apparatus of claim 1 , wherein the auto focusing VCM actuator unit is operated independently from the at least one image stabilization VCM actuator unit.

3. The optical adjusting apparatus of claim 2 , wherein the at least one image stabilization VCM actuator unit comprises:
at least one first image stabilization VCM actuator that moves the lens holder in a first direction perpendicular to the optical axis; and
at least one second image stabilization VCM actuator that moves the lens holder in a second direction perpendicular to both the optical axis and the first direction.

4. The optical adjusting apparatus of claim 3 , wherein
the at least one first image stabilization VCM actuator comprises:
a first image stabilization magnet disposed in the lens holder; and
a first image stabilization coil disposed to face the first image stabilization magnet so that the first image stabilization coil reacts with the first image stabilization magnet to move the lens holder in the first direction, and

the at least one second image stabilization VCM actuator comprises:
a second image stabilization magnet disposed in the lens holder; and
a second image stabilization coil disposed to the second image stabilization magnet so that the second image stabilization coil reacts with the second image stabilization magnet to move the lens holder in the second direction perpendicular to the first direction.

5. The optical adjusting apparatus of claim 4 , wherein the auto focusing magnet is disposed opposite to one of the first image stabilization magnet and the second image stabilization magnet.

6. The optical adjusting apparatus of claim 4 , wherein the first image stabilization magnet is disposed asymmetrically with respect to the second image stabilization magnet.

7. The optical adjusting apparatus of claim 4 , wherein the first image stabilization coil is disposed below the first image stabilization magnet, and the second image stabilization coil is disposed below the second image stabilization magnet.

8. The optical adjusting apparatus of claim 4 , wherein each of the first image stabilization coil and the second image stabilization coil comprises a printed coil.

9. The optical adjusting apparatus of claim 5 , wherein the auto focusing coil is disposed behind the auto focusing magnet on a basis of the lens holder.

10. The optical adjusting apparatus of claim 5 , wherein the first image stabilization coil and the second image stabilization coil are disposed on the first base.

11. The optical adjusting apparatus of claim 10 , wherein the auto focusing magnet is provided in the first base.

12. The optical adjusting apparatus of claim 11 , wherein the auto focusing coil is disposed on the second base.

13. The optical adjusting apparatus of claim 10 , further comprising:
a first detecting unit that is disposed in the first base and detects position movement of the lens holder in the first direction; and
a second detecting unit that is disposed in the first base and detects position movement of the lens holder in the second direction.

14. The optical adjusting apparatus of claim 12 , further comprising:
a third detecting unit that is disposed in the second base and detects position movement of the lens holder in the optical axis direction.

15. The optical adjusting apparatus of claim 3 , wherein the at least one first image stabilization VCM actuator comprises two first image stabilization VCM actuators disposed to face each other around the optical adjusting lens.

16. The optical adjusting apparatus of claim 15 , wherein the auto focusing VCM actuator unit is disposed opposite to the at least one second image stabilization VCM actuator.

17. The optical adjusting apparatus of claim 3 , wherein the at least one second image stabilization VCM actuator comprises two second image stabilization VCM actuators disposed opposite to each other on a basis of the optical adjusting lens.

18. The optical adjusting apparatus of claim 17 , wherein the auto focusing VCM actuator unit is disposed opposite to the at least one first image stabilization VCM actuator.

19. The optical adjusting apparatus of claim 1 , wherein a plurality of ball bearing are disposed between the first base and the second base.

20. An optical adjusting apparatus, comprising:
a lens holder that supports an optical adjusting lens;
an auto focusing voice coil motor (VCM) actuator unit that moves the lens holder along an optical axis of the optical adjusting lens;
at least one image stabilization VCM actuator that moves the lens holder perpendicular to the optical axis;
a first base that supports the lens holder such that the lens holder moves in a direction perpendicular to the optical axis; and
a second base that supports the first base such that the first base moves in the optical axis direction;
wherein the auto focusing VCM actuator unit comprises an auto focusing magnet fixed to the first base and an auto focusing coil fixed to the second base so that the auto focusing coil is disposed opposite to the auto focusing magnet,
wherein a plurality of ball bearings are disposed between the first base and the lens holder and a plurality of ball bearing are disposed between the first base and the second base.

21. The optical adjusting apparatus of claim 20 , wherein the image stabilization VCM actuator comprises:
at least one first image stabilization VCM actuator to move the lens holder in a first direction; and
at least one second image stabilization VCM actuator to move the lens holder in a second direction orthogonal to the first direction.

22. The optical adjusting apparatus of claim 21 , wherein:
the first image stabilization VCM actuator comprises:
a first image stabilization magnet disposed in the lens holder; and
a first image stabilization coil disposed opposite to the first image stabilization magnet to move the lens holder in the first direction; and

the second image stabilization VCM actuator comprises:
a second image stabilization magnet disposed on the lens holder; and
a second image stabilization coil disposed opposite to the second image stabilization magnet to move the lens holder in the second direction.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Hwang Young-Jae
• Byon Kwang-Seok
• Lee Kyung-Bae

Classifications

• H04N23/68 Primary

  for stable pick-up of the scene, e.g. compensating for camera body vibrations · CPC title

• H04N23/687

  by shifting the lens or sensor position · CPC title

• H04N23/55 Primary

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

• H02K3/26

  consisting of printed conductors · CPC title

• H02K2201/18

  Machines moving with multiple degrees of freedom · CPC title