WO2016137083A1

WO2016137083A1 - Stabilizing device for shaking of camera

Info

Publication number: WO2016137083A1
Application number: PCT/KR2015/011069
Authority: WO
Inventors: 이병철; 김영석; 박병찬; 김인현; 고재용
Original assignee: 자화전자 주식회사
Priority date: 2015-02-23
Filing date: 2015-10-20
Publication date: 2016-09-01
Also published as: KR101730010B1; KR20160102803A

Abstract

Disclosed is a stabilizing device for shaking of a camera. A stabilizing device for shaking of a camera, according to an embodiment of the present invention, comprises: a lower ball seat provided on a stator that has an image sensor mounted thereon; an upper ball seat provided on a mover that has a lens barrel installed thereon and performs a two-dimensional planar movement on the stator; and a ball formed from a magnetic material and rolling between the lower ball seat and upper ball seat, wherein a lower magnet and an upper magnet are attached, in correspondence with the ball, to the lower side of the lower ball seat and the upper side of the upper ball seat, respectively.

Description

Image stabilization device

The present invention relates to a camera shake correction apparatus, and more particularly, to a camera shake correction apparatus for compensating for hand shake caused when a still image is taken by a small camera of a portable mobile device so that an image without image shake can be taken. .

In recent years, portable terminals such as smartphones (hereinafter referred to as 'mobile') are being multi-converged and equipped with music, movies, TVs and games as well as simple telephone functions with the development of the technology. One of the factors driving the development of the furnace is the camera lens module.

The camera lens module mounted on the mobile is equipped with various additional functions such as auto focus function (AUTO FOCUS: AF), optical zoom function (OPTICAL ZOOM), etc. in order to meet the recent changes to high pixel and high function centered on user's request. Is changing. Recently, various attempts have been made to implement OPTICAL IMAGE STABILIZER in mobile size.

The image stabilization technology automatically maintains the resolution of the captured image by automatically controlling the focus of the correction lens constituting the camera module to move in a direction corresponding to the hand shake. The camera module applied to the mobile device to implement the image stabilization technology is equipped with an image stabilization actuator.

Among the vibration stabilization actuators, a VCM (Voice Coil Motor) type using a magnetic field and an electric field is well known. In the VCM type, a magnetic circuit is usually composed of a coil and a magnetic body disposed to face each other, and the moving part of the lens mounted plane is moved in a plane with respect to the fixed part by using the electromagnetic force generated by the magnetic circuit to cope with the tremor. Allow calibration to be implemented.

In general, four magnetic circuits, two pairs facing each other in the two axis directions, are adopted to move the driving parts in the X and Y biaxial directions so that correction can be performed. It is well known to use a suspension wire to support planar motion and generate a restoring force for the biaxial movement of the drive part so that it can be aligned in situ.

The conventional image stabilization device using a suspension wire is a camera shake correction device of Japanese Patent Application Laid-Open No. 2011-065140, an image pickup device with a camera shake correction function of Korea Patent Publication No. 2012-0045333 and Korea Patent Publication A number of techniques have been proposed in various forms, including the image pickup apparatus with image stabilization function of 2012-0047384.

However, in the conventional device for image stabilization of suspension wire type, durability problems such as the suspension wire is easily bent or broken due to external impact or the like have been pointed out. There is a disadvantage that it is not suitable for miniaturization because the size of the module must be large.

In addition, in the assembling work connecting the driving part and the fixed part with the suspension wire, both ends of the suspension wire are fixed to the fixed part and the driving part in a state in which the fixed part and the driving part are fixed to a separate dedicated jig apart from each other. Since each soldering (Soldering) had to be connected, there is a disadvantage that the assembly is remarkably inferior and takes a lot of time to assemble.

As another type of technology for supporting the planar motion of the driving part relative to the conventional fixed part, hand shake compensation is provided through a ball to support the biaxial movement of the driving part relative to the fixed part between the driving part and the fixed part. There is a technique to implement this. Unlike the suspension wire method, there is no fear of disconnection due to external impact, and thus has high durability.

However, the conventional ball-type image stabilization device includes a middle guide for guiding the planar movement of the driving part between the fixed part and the driving part, and generating a restoring force for the biaxial movement of the driving part. This requires a number of springs to implement centering (a technique for restoring the alignment of the optical axis).

In addition, as the middle guide and the springs (plates for restoring vibration or coil springs) are applied, the size of the camera module must be as large as the space occupied by the middle guide and the spring, making it difficult to miniaturize the product and cost a lot. In addition, various difficulties have been pointed out in securing the competitiveness of the product, such as lack of mass production because it is not easy to assemble.

The technical problem to be solved by the present invention is a method of the ball guides the two-dimensional plane motion of the movable part with respect to the drive part, a simple configuration that does not require a middle guide, yet stable and accurate image stabilization drive control is possible Is to provide.

Another technical problem to be solved by the present invention is to implement the centering by using the attraction between the permanent magnet (or permanent magnet and magnetic material) of the drive part and the movable part, the use of a separate component (restore spring) for the centering It is to provide a hand shake correction device that can eliminate the.

Another technical problem to be solved by the present invention, the ball for guiding the two-dimensional planar motion of the driving part to one side under the influence of the magnetic field of the upper and lower or upper or lower permanent magnet (or permanent magnet and yoke) It is possible to restore to a designated position at all times without bias, and therefore, to provide a hand shake correction device capable of minimizing driving interference by a ball.

According to one aspect of the present invention as a means for solving the problem,

A lower ball seat provided in a fixing part in which an image sensor is mounted;

An upper ball seat mounted on a lens barrel and provided on a movable part (MOVER) for performing a two-dimensional planar motion on the fixing part;

Includes; ball of the magnetic material to perform a rolling motion between the lower ball sheet and the upper ball sheet,

The lower ball seat and the upper ball seat upper surface is provided with a hand shake correction device, characterized in that attached to the lower magnet and the upper magnet, respectively.

In an embodiment according to an aspect of the present invention, the movable part may perform a two-dimensional planar motion on the fixed part by a vibration correction driver including a driving coil and a driving magnet.

In this case, the driving coil may be disposed in the fixed portion and the driving magnet may be disposed in the movable portion.

Alternatively, the driving coil and the driving magnet may be disposed in the movable part.

In addition, the yoke is installed on the movable portion to surround the side and the rear of the drive magnet; may further include a.

The ball, the lower magnet, and the upper magnet applied to an aspect of the present invention may be configured to be disposed on a coaxial line so that their centers coincide with each other.

In addition, at least one of the upper ball seat and the lower ball seat ball receiving portion surrounding the exposed portion of the ball; may be further provided.

Preferably, the upper and lower magnets opposed to each other with the ball interposed therebetween have polarities different from each other to form a attraction force.

In addition, the upper ball sheet and the lower ball sheet may be a nonmagnetic conductor or an injection molded product having a thin film thickness of the nonmagnetic conductor on the surface in contact with the ball.

In this case, an external power source is connected to the lower ball seat, and a current supplied by an external power source connected to the lower ball seat may be supplied as a current for driving the movable part through the ball and the upper ball seat.

According to another embodiment of the present invention as a means of solving the problem,

Provided is a hand shake correction device, characterized in that a magnet is attached to one of the lower surface of the lower ball seat and the upper surface of the upper ball sheet and a magnetic body is attached to the other surface to correspond to the magnet.

In another embodiment according to an aspect of the present invention, the movable part may perform a two-dimensional planar motion on the fixing part by a vibration correction driver including a driving coil and a driving magnet.

In another embodiment, the yoke is installed on the movable portion to surround the side and the rear of the drive magnet; may further include.

In addition, the ball, magnet, magnetic material may be configured to be arranged on the coaxial line so that the center thereof.

Preferably, at least one of the upper ball seat and the lower ball seat may further include a ball receiving portion surrounding the exposed portion of the ball.

The magnetic material applied in the present embodiment may be a sphere of a size corresponding to the ball, or may be a circular or polygonal three-dimensional structure having a predetermined thickness.

According to another aspect of the present invention as a means for solving the problem, it provides a camera lens module comprising a hand shake correction device according to the above aspect.

[Favorable effect]

According to an embodiment of the present invention, the ball guides the planar motion of the movable part with respect to the driving part, and since the middle guide is not required, the configuration is simple, and it is advantageous to miniaturization and light weight of the product, and unlike the wire suspension method, the drop impact Edo, there is no risk of breakage of the part supporting the planar movement of the movable part with respect to the driving part, thereby increasing the durability and reliability of the product.

In addition, permanent magnets (or permanent magnets and magnetic bodies) are mounted on each of the driving and movable parts around the ball, and centering is performed using a manpower acting therebetween to restore the driving part to the optical axis alignment position. As a method, unlike the conventional ball type, it is possible to exclude the use of a separate part (restoration spring) for centering, thereby improving the assemblability and securing the price competitiveness.

Also, the ball guiding the two-dimensional planar motion of the driving part can be restored to a designated position at all times without being biased to one side under the influence of the magnetic field of the upper and lower parts or the upper and lower permanent magnets (or permanent magnets and yokes). Accordingly, driving interference due to the bias of the ball can be avoided, thereby improving the dynamic characteristics of the driving part, and stable and accurate image stabilization can be achieved.

1 is a partially exploded perspective view according to a preferred embodiment of the hand shake correction device according to the present invention.

FIG. 2 is a partially exploded perspective view of the camera shake correction apparatus of FIG. 1 viewed from the bottom; FIG.

3 is a side view of the coupling of the image stabilization device shown in FIG.

Figure 4 is a schematic view showing a first preferred embodiment of the part for guiding the planar movement of the movable portion with respect to the fixing in Figures 1-3.

5 is a schematic view showing a second preferred embodiment of the part for guiding the planar motion of the movable part relative to the fixing part;

6 is a schematic view showing a third preferred embodiment of the part for guiding the planar motion of the movable part relative to the fixing part;

7 is a schematic view showing a fourth preferred embodiment of a part for guiding the planar motion of the movable part relative to the fixing part;

Hereinafter, preferred embodiments of the present invention will be described in detail. In the description of the present invention, a detailed description of known configurations will be omitted, and a detailed description thereof will be omitted for configurations that may unnecessarily obscure the subject matter of the present invention.

For convenience of description, a description will be given using a three-axis coordinate system, in which the Z-axis is defined as the optical axis direction, and the X-axis (first direction) with respect to the Z-axis is the optical axis direction. The orthogonal image stabilization direction and the Y axis (second direction) will be described by defining another image stabilization direction orthogonal to the X axis on the coplanar plane.

The image stabilization apparatus of the present invention is applied to a compact camera lens module for a mobile device. Specifically, the camera's lens module compensates for the hand shake caused when shooting still images, so that a clear picture without image shake can be obtained. A relative displacement is given to the lens or the image sensor in a direction perpendicular to the optical axis, respectively. To compensate for hand shake.

First, a preferred embodiment of a hand shake correction apparatus according to the present invention will be described with reference to FIGS. 1 to 3.

1 is a partially exploded perspective view according to a preferred embodiment of the hand shake correction device according to the present invention, Figure 2 is a partial exploded perspective view of the hand shake correction device of FIG. 3 is a side view of the coupling of the image stabilization device shown in FIG.

1 to 3, the image stabilization apparatus according to an exemplary embodiment of the present invention is largely comprised of a fixing part (STATOR) 1 on which an image sensor is mounted and a moving part (MOVER) 2 on which a lens barrel is mounted. . When the hand shake occurs, the movable part 2 on the fixing part 1 performs a two-dimensional planar motion in the direction corresponding to the hand shake with respect to the fixing part 1, thereby implementing correction corresponding to the hand shake.

The planar motion of the movable part 2 relative to the fixed part 1 may be implemented by the vibration correction driver 15 composed of the driving coil 10 and the driving magnet 20. In this case, the driving coil 10 and the driving magnet 20 are installed to form a pair corresponding to each of the fixed part 1 and the movable part 2 as shown in the drawing, or although not shown, a separate housing is provided in the movable part 2. There may be a variety of modifications, such as the configuration of mounting the drive coil 10 and the drive magnet 20 in the housing and the movable portion (2).

2D of the movable part 2 with respect to the fixed part 1 by the interaction between the electric field generated by the drive coil 10 and the magnetic field of the drive magnet 20 when a current is applied to the drive coil 10. Planar motion is realized, and centering is performed by magnets (or magnets and magnetic bodies, which will be described later) mounted on the guide part 3 for guiding the planar motion of the movable part 2 with respect to the fixed part 1 (aligning the movable part with the optical axis). Restoring in place) is implemented.

The fixing part 1 is a flexible substrate (not shown) in which an image sensor (not shown) is mounted in response to the coil 10 and the lens barrel 22 mounted on the movable part 2, and a flexible substrate. It may include a base 14 is mounted (not shown). The flexible substrate extends outside of the camera lens module to which the image stabilization apparatus of the present invention is applied and is electrically connected to the main substrate of the mobile device.

1 to 3, in the case where the driving coil is mounted on the fixing part 1, the driving coil 10 may have a first direction X perpendicular to the optical axis of the lens barrel 22 at the edge of the base upper surface. X-axis drive coil 10a mounted in the axial direction) and Y-axis drive coil 10b mounted in the second direction (Y-axis direction) orthogonal to the first direction, and two drive coils 10a X-axis, Y-axis driving magnets (20a, 20b) may be mounted on the side of the movable portion (2) corresponding to (10b), respectively.

On the base of the opposite side of the X-axis drive coil 10a and the opposite side-side fixing part 1 of the Y-axis drive coil 10b, the positional change of the movable part 2 in each of the first and second directions, Specifically, the first position detection detects a change in the position of the X-axis driving magnet 20a with respect to the X-axis driving coil 10a and a change in the position of the Y-axis driving magnet 20b with respect to the Y-axis driving coil 10b. The sensor 11a and the second position detection sensor 11b may be mounted, respectively.

The first position detection sensor 11a and the second position detection sensor 11b recognize in real time the position of the movable portion 2 with respect to the fixed portion 1 as a change in the magnetic field of the magnet corresponding to each sensor. Feedback control to the shake correction driver 15 is performed based on the recognized position value for the shake correction to be accurately implemented.

Each driving magnet 20 (X-axis driving magnet and Y-axis driving magnet) mounted on the movable part 2 has a yoke (Yoke) in the rear portion such that the magnetic force generated in the magnet is concentrated on the corresponding driving coil 10. 26) can be mounted. The yoke 26 is preferably provided in a form that surrounds both sides of the driving magnet 20 as well as the rear surface of the driving magnet 20 so that the magnetic force of each driving magnet 20 does not affect the magnet of the guide unit 3 to be described later. It also plays a role.

The lens barrel 22 in which the optical path is formed is mounted in the movable part MOVER 2. The movable part 2 preferably includes a shake correction carrier 24 mounted with the drive magnet 20 on a circumferential surface corresponding to the drive coil 10. In some cases, the lens barrel 22 may be mounted, and the shake correction carrier 24 may further include an auto focus carrier (not shown) that is retractably received along the optical axis direction of the lens barrel 22.

The lens barrel 22 is equipped with a lens group (not shown) made of a plurality of lenses, and the shake correction carrier 24 is provided with a hole having a diameter sufficient to stably accommodate the lens barrel 22. Although not shown, movement of the lens barrel in the shake correction carrier 24 may be implemented through an auto focus driver.

In addition to the VCM (Voice Coil Motor) method, which is composed of magnetic circuits using coils and magnets, the Auto Focusing Actuator uses a lens barrel like the ultrasonic motor method using piezo or the shape memory alloy method. It is possible to include all known form means for driving in the optical axis direction so that autofocus can be performed.

When the Carrera lens module is implemented, the shield cover 4 (not shown) is coupled to the structure surrounding the movable part 2, thereby protecting the components mounted on the movable part 2 and the fixing part 1 from the outside and protecting external electromagnetic waves. By blocking it, it is possible to prevent the electromagnetic force generated between the driving coil 10 mounted on the fixed part 1 and the driving magnet 20 mounted on the movable part 2 during driving for hand shake correction.

The planar movement of the movable part 2 with respect to the fixed part 1 by the vibration correction drive part 15 composed of the drive coil 10 and the drive magnet 20 corresponds to each other in the fixed part 1 and the movable part 2. A guide part 3 including at least two pairs of

ball seats

30 and 32 provided therebetween, and a ball 34 which is interposed between the corresponding ball seats 30 and 32 and performs a rolling motion. Can be implemented stably.

The ball seats 30 and 32 provided on each of the fixed part 1 and the movable part 2 are preferably the vibrations that constitute the base 14 and the movable part 2 constituting the fixed part 1. In forming the correction carrier 24, the base 14 and the vibration correction carrier 24 themselves may be configured as a sheet by insert injection.

The configuration of the guide unit 3 will be described by embodiments with reference to the accompanying drawings.

제1 실시 예First embodiment

Figure 4 is a schematic view showing a first preferred embodiment of the portion for guiding the planar movement of the movable portion with respect to the fixed portion in Figures 1-3.

Referring to FIG. 4, the guide part 3-1 according to the first embodiment includes the lower ball seat 30 and the upper ball seat provided to correspond to each other in the fixing part STATOR 1 and the movable part MOVER 2. 1 and 2, the lower ball seat 30 and the upper ball seat 32 include a magnetic material ball 34 which performs rolling motion between the lower ball seat 30 and the lower ball seat 30. A lower magnet 36 and an upper magnet 38 are respectively attached to the lower surface and the upper surface of the upper ball seat 32 in correspondence with the balls 34.

The ball 34, the lower magnet 36, and the upper magnet 38 may be disposed on a coaxial line (the same vertical line) so that their centers coincide with each other, and the upper ball seat 32 and the lower ball seat 30 At least one of the balls 34 to prevent the separation of the ball 34 interposed between the ball seats 30, 32 during the two-dimensional plane movement of the movable part 2 with respect to the fixing part 1 Ball receiving portion 39 surrounding the side of the ball 34 may be provided so that the top or bottom of the).

The polarities of the upper part of the lower magnet 36 and the lower part of the upper magnet 38 which are respectively installed on the upper surface of the lower ball sheet 30 and the lower surface of the upper ball sheet 32 with the ball 34 therebetween are different from each other. The attraction is configured to work with each other. That is, if the upper portion of the lower magnet 36 is the N pole, the lower portion of the upper magnet 38 becomes the S pole, and conversely, if the upper portion of the lower magnet 36 is the S pole, the lower portion of the upper magnet 38 becomes the N pole.

The

magnets

36 and 38 are mounted in a structure in which opposite magnetic poles face each other on the back surface of the ball seat of the fixed part 1 and the movable part 2, with the ball 34 interposed therebetween, thereby fixing the fixed part 1. Even if the distance between the two magnets moves away from within the tolerance of the magnetic flux due to the planar movement of the movable part 2 with respect to), the centering (the technique of restoring the movable part to the optical axis alignment position) is realized due to the attractive force between the two magnets. Can be.

In other words, the attraction force acting between the upper magnet 38 and the lower magnet 36 when the image stabilization is not performed causes the movable part 2 to be fixed at the correct optical axis alignment position on the fixing part 1. When a current is applied to the drive coil 10 and a relative displacement of the movable part 2 with respect to the fixed part 1 occurs, the attraction force is a restoring force to return the movable part 2 to its original position. Acts as

That is, as a structure for implementing the centering (technique for restoring the movable part to the optical axis alignment position) by using the attraction force between the fixed part 1 and the magnets mounted on each of the movable heads with respect to the ball 34, Unlike generally known ball-type image stabilization devices, the use of separate parts (plate or coiled springs or suspension wires) for centering implementation can be eliminated.

The ball 34 for guiding the two-dimensional planar motion between the upper ball seat 32 and the lower ball seat 30 is also moved to one side under the influence of the magnetic fields of the

magnets

36 and 38 disposed at the upper and lower parts thereof. It is always on the line coincident with the center of the magnet with the highest magnetic flux density. Therefore, performance degradation such as driving interference or incorrect correction due to one-way bias of the ball 34 can be avoided.

제2 실시 예Second embodiment

Fig. 5 is a schematic view showing a second preferred embodiment of the part for guiding the planar motion of the movable part with respect to the fixed part, wherein the auto-focus driving part (not shown) for lifting and lowering the lens barrel is separate from the shake correction driving part 15. The embodiment applied to the case of the camera lens module of the type provided in the movable part 2 is shown.

The lower ball seat 30 and the upper ball seat 32, and the lower ball seat 30 and the upper ball seat 32 when the auto-focus driving unit for driving the lens barrel is provided in the movable unit 2 separately from the shake correction driving unit 15. The autofocus driver provided in the flexible substrate (not shown) and the movable part 2, in which the guide part 3-2 composed of the balls 34 interposed therebetween, is mounted on the fixed part 1. It can also be configured to serve as a connector that connects to

In other words, in the structure in which the auto focus driver is provided in the movable part 2 separately from the shake correction driver 15, the flexible part and the movable part 2 side are fixed to the fixed part 1 side through the guide part 3. By configuring the auto focus driver to be electrically connected to each other, the current input through the flexible substrate 12 may be configured to be supplied to the auto focus driver of the movable part 2 through the guide part 3.

For this purpose, the upper ball seat 32 and the lower ball seat 30 are made of non-magnetic conductors (magnetically conductive objects, such as copper (Cu), SUS 316, SUS 304, etc.) or only on the surface where the ball contacts. The conductive material is formed in the form of an injection molded product having a thin film thickness, and as shown in FIG. 5, the power is connected to the lower ball seat 30 so that electric power is fixed from the fixed part 1 to the movable part 2 side without using additional electric parts. The configuration to be supplied may be implemented.

제3, 제4 실시 예Third and fourth embodiments

6 and 7 are schematic diagrams showing preferred third and fourth embodiments, respectively, of a part for guiding the planar motion of the movable part relative to the fixing part.

The guide parts 3-3 and 3-4 constituting the third and fourth embodiments of FIGS. 6 and 7 may be disposed on either of the lower surface of the lower ball sheet 30 and the upper surface of the upper ball sheet 32. The magnet 36 is attached to the ball 34, and the magnetic body 37 is attached to the other side of the magnet 36 to be identical to the first embodiment. That is, unlike the first embodiment in which the

magnets

36 and 38 are arranged on both the upper and lower sides of the ball, the difference is that the magnetic body 37 is attached to one of the upper and lower parts of the ball 34 instead of the magnet. have.

Of course, even if the magnetic body 37 in place of the magnet attached to either one of the upper and lower portions of the ball 34 as shown in FIGS. 6 and 7 between the magnet 36 and the magnetic body 37 attached to the opposite side of the magnetic body 37. The centering is implemented by the attraction force, which is the same as the first embodiment, but is advantageous in terms of unit cost as the magnetic material is used instead of the magnet, and the force that overcomes the attraction force during the vibration correction driving, that is, the driving load Compared to the embodiment 1 will be reduced.

The magnetic body may be a sphere 37-1 having a size corresponding to the ball 34 as shown in FIG. 6 or a circular or polygonal solid structure 37-2 having a predetermined thickness as shown in FIG. As in the first embodiment, the ball 34, the magnet 36, and the magnetic bodies 37-`1 and 37-2 are preferably arranged on the coaxial line so that their centers coincide with each other.

In the drawings, an example in which the magnetic body 37 is attached to the upper surface of the upper ball seat 32 and the magnet 36 is attached to the lower surface of the lower ball seat 30 is illustrated as an example, but the magnet 36 and the magnetic body 37 are illustrated. Even if the position of the) can be exerted in the same way, as in the second embodiment, the upper and

lower ball seats

30 and 32 are formed of a non-magnetic conductor so that the fixing part 1 and the movable part 2 are Of course, it can also be configured to be electrically connected.

According to the embodiment of the present invention as described above, the ball guides the planar motion of the movable part with respect to the drive part, there is no need for a middle guide, the configuration is simple and advantageous to the miniaturization and weight of the product, and the wire suspension method Unlike the drop impact, there is no fear that the part supporting the plane motion of the movable part relative to the driving part may be damaged, thereby increasing the durability and reliability of the product.

In the detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

[Description of the code]

1: STATOR 2: MOVER

3: guide part 10: driving coil

11a, 11b: first and second position detection sensors

14: Base 15: X axis shake correction drive unit

20: driving magnet 22: lens barrel

24: Shake Correction Carrier 26: Yoke

30: lower ball seat 32: upper ball seat

34: ball 36: lower magnet

37: magnetic material (third, fourth embodiment) 38: lower magnet

Claims

A lower ball seat provided in a fixing part in which an image sensor is mounted;

An upper ball seat mounted on a lens barrel and provided on a movable part (MOVER) for performing a two-dimensional planar motion on the fixing part;

A ball made of a magnetic material that performs rolling motion between the lower ball sheet and the upper ball sheet; And

And a lower magnet and an upper magnet attached to the lower ball seat lower surface and the upper ball seat upper surface corresponding to the ball, respectively.
A lower ball seat provided in a fixing part in which an image sensor is mounted;

An upper ball seat mounted on a lens barrel and provided on a movable part (MOVER) for performing a two-dimensional planar motion on the fixing part;

Includes; ball of the magnetic material to perform a rolling motion between the lower ball sheet and the upper ball sheet,

And a magnet is attached to one of the lower surface of the lower ball sheet and the upper surface of the upper ball sheet, and a magnetic material is attached to the other surface to correspond to the magnet.
The method according to claim 1 or 2,

The device for compensating for hand shake, characterized in that the movable part performs a two-dimensional planar motion on the fixing part by a shake compensating drive part composed of a driving coil and a driving magnet.
The method of claim 3, wherein

The drive coil is disposed in the fixed part and the drive magnet is characterized in that the movement is disposed in the movable part.
The method of claim 3, wherein

And the driving coil and the driving magnet are arranged in the movable part.
The method of claim 3, wherein

And a yoke installed on the movable part to surround the side and rear surfaces of the driving magnet.
The method according to claim 1 or 2,

And a ball receiving unit surrounding a portion of the ball to be exposed to at least one of the upper ball sheet and the lower ball sheet.
The method according to claim 1 or 2,

The upper ball seat and the lower ball sheet is a hand shake correction device, characterized in that the non-magnetic conductor or the injection molded material is deposited in a thin film on the surface in contact with the ball.
The method of claim 8,

An external power supply is connected to the lower ball seat, and a hand shake correction device, characterized in that a current supplied by an external power source connected to the lower ball seat is supplied as a current for driving the movable part through the ball and the upper ball sheet.
The method of claim 1,

And said ball, lower magnet, and upper magnet are aligned so that their centers coincide with each other.
The method of claim 1,

Hand shake correction apparatus, characterized in that the polarity of the upper and lower magnets opposing the lower side of the ball between the different.
The method of claim 2,

And said ball, magnet and magnetic body are aligned so that their respective centers coincide with each other.
The method of claim 2,

The magnetic body is a hand shake correction device, characterized in that the sphere of the size corresponding to the ball.
The method of claim 2,

The magnetic body is a hand shake correction device, characterized in that the circular or polygonal solid structure having a predetermined thickness.