KR102546101B1 - Lens driving device - Google Patents

Abstract

A lens driving device is disclosed. A lens driving device of the present invention includes a lens barrel accommodating a lens, comprising: a base, a shake compensation carrier positioned on the base, and a shake compensation driver for moving the shake compensation carrier in a direction perpendicular to an optical axis; An autofocus carrier positioned inside the shake compensation carrier, an autofocus driver for moving the autofocus carrier in the optical axis direction, and at least one supporting the shake compensation carrier to be movable in a direction perpendicular to the optical axis with respect to the base. Includes ball bearings.

Description

Lens driving device {LENS DRIVING DEVICE}

The present invention relates to a lens driving device mounted on a camera module and moving a lens barrel in at least one direction.

BACKGROUND As electronic communication technology develops, camera modules mounted in mobile electronic devices such as smart phones, tablet computers, and laptop computers are being upgraded. The advancement of camera modules is being realized by the installation of auto focus function, high-pixel function, and zoom function.

In addition, an optical image stabilizer (OIS) capable of compensating for hand shake has recently been installed. The optical shake correction device is a device that compensates for shake by moving the lens barrel relative to the sensor. Such an optical shake correction device is disclosed in Korean Patent Registration No. 10-1518825 (registered on May 4, 2015) and Japanese Patent Publication No. 2013-024944 (published on February 4, 2013).

Recently, a mobile electronic device equipped with a camera module has been miniaturized. Also, the pixels of the camera module tend to increase. Accordingly, there is a demand for a lens driving device capable of more precise stabilization while miniaturizing than before.

An object to be solved by the present invention is to provide a lens driving device capable of contributing to miniaturization and thinning of an electronic device to be mounted by minimizing a height in an optical axis direction.

Another problem to be solved by the present invention is to provide a lens driving device capable of precise stabilization of a lens barrel.

A lens driving device of the present invention for solving the above problems is a lens driving device including a lens barrel in which a lens is accommodated, a base, a shake compensation carrier positioned on the base, and a direction perpendicular to the optical axis of the shake compensation carrier. A shake compensation driver for moving the shake compensation carrier, an autofocus carrier located inside the shake compensation carrier, an autofocus driver for moving the autofocus carrier in the optical axis direction, and movement of the shake compensation carrier in a direction orthogonal to the optical axis with respect to the base. and at least one ball bearing for support.

In one embodiment of the present invention, at least one spring supporting the autofocus carrier to be movable in an optical axis direction with respect to the shake compensation carrier may be further included.

In one embodiment of the present invention, the spring may include an upper spring and a lower spring positioned lower than the upper spring.

In one embodiment of the present invention, the spring may be formed of a plate spring.

In one embodiment of the present invention, the spring includes an outer circumferential portion and an inner circumferential portion extending inwardly from the outer circumferential portion and elastically deformable in an optical axis direction with respect to the outer circumferential portion, wherein the outer circumferential portion is coupled to the shake compensation carrier, , The inner peripheral portion may be coupled to the autofocus carrier.

In one embodiment of the present invention, the vibration compensation carrier may be placed in close contact with the base with the ball bearing interposed therebetween.

In one embodiment of the present invention, the shake compensation driving unit may include at least one shake compensation coil coupled to at least one magnet coupled to the shake compensation carrier and the base, and at least a part of the shake compensation coil facing the magnet. can

In one embodiment of the present invention, the vibration compensation coil may be wound around an axis in a direction orthogonal to an optical axis.

In one embodiment of the present invention, the shake compensation coil may include two or more shake compensation coils oriented in two different directions orthogonal to the optical axis.

In one embodiment of the present invention, two or more vibration compensation coils oriented in two different directions may be oriented orthogonally to each other.

In one embodiment of the present invention, a flexible printed circuit board coupled to the base may be further included, and the vibration compensation coil may be coupled to the flexible printed circuit board to receive an electrical signal from a circuit formed on the flexible printed circuit board.

In one embodiment of the present invention, a position sensor coupled to the flexible circuit board to face the magnet may further include a position detection sensor for detecting movement in a direction orthogonal to the optical axis of the vibration compensation carrier.

In one embodiment of the present invention, the autofocus driving unit is coupled to the autofocus coil wound on the autofocus carrier and the vibration compensation carrier, at least one magnet that is at least partially opposed to the autofocus coil. can include

In one embodiment of the present invention, the autofocus coil may be wound around an optical axis.

In one embodiment of the present invention, a position detection sensor coupled to the autofocus carrier to face the magnet and detecting movement of the autofocus carrier in an optical axis direction may be further included.

In one embodiment of the present invention, the vibration compensation driving unit may include at least one vibration compensation coil coupled to the magnet and the base and at least partially opposed to the magnet.

In one embodiment of the present invention, the autofocus carrier may move in an optical axis direction relative to the shake compensation carrier.

In one embodiment of the present invention, when the shake compensation carrier moves in a direction orthogonal to the optical axis, the autofocus carrier may move in a direction orthogonal to the optical axis together with the shake compensation carrier.

In one embodiment of the present invention, the lens barrel moves in the optical axis direction according to the movement of the autofocus carrier in the optical axis direction, and in a direction perpendicular to the optical axis according to the movement in the direction perpendicular to the optical axis of the image stabilization carrier. can move to

A lens driving device according to an embodiment of the present invention can contribute to miniaturization and thinning of a mounted electronic device by minimizing a height in an optical axis direction.

In addition, the lens driving device according to an embodiment of the present invention is capable of precisely compensating for shaking of the lens barrel.

1 is a perspective view showing the appearance of a lens driving device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a lens driving device according to an embodiment of the present invention taken along line AA′ of FIG. 1 .
3 is a cross-sectional view of a lens driving device according to an embodiment of the present invention taken along line BB′ of FIG. 1 .
4 is an exploded perspective view of a lens driving device according to an embodiment of the present invention.
5 is a perspective view illustrating an exploded portion corresponding to a base portion of the lens driving device according to the present invention.
6 is a cross-sectional view of a portion corresponding to a base portion of the lens driving device of the present invention.
7 is a perspective view illustrating parts corresponding to a lens barrel, a lower plate, a shake compensation carrier, a shake compensation driving unit, an autofocus carrier, an autofocus driving unit, a ball bearing, and a spring of the lens driving device according to the present invention.
FIG. 8 is a perspective view illustrating each component of FIG. 7 in an exploded manner.
9 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line CC′ of FIG. 7 .
10 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line DD′ of FIG. 7 .
11 is a perspective view illustrating parts corresponding to a lens barrel, an autofocus carrier, an autofocus driver, and a shake compensation carrier of the lens driving device according to the present invention.
FIG. 12 is a perspective view illustrating each component of FIG. 11 in an exploded manner.
13 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line EE′ of FIG. 11 .
14 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line FF′ of FIG. 11 .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, if it is determined that adding a detailed description of a technology or configuration already known in the related field may obscure the gist of the present invention, some of them will be omitted from the detailed description. In addition, the terms used in this specification are terms used to properly express the embodiments of the present invention, which may vary depending on people or customs related to the field. Therefore, definitions of these terms will have to be made based on the content throughout this specification.

Hereinafter, a lens driving device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5 attached thereto.

1 is a perspective view showing the appearance of a lens driving device according to an embodiment of the present invention. 1 shows a three-axis coordinate system composed of x-axis, y-axis, and z-axis. In the lens driving device of the present invention, the lenses are disposed with the z-axis as an optical axis. The optical axis of the lens means a direction in which light passing through the center of the lens travels.

In the present invention, the positive (+) direction of the z-axis is defined as upward, and the negative (-) direction of the z-axis is defined as downward. In addition, the x-axis and y-axis directions are defined as lateral directions for explanation.

Referring to FIG. 1 , since the outside of the lens driving device is shielded by a shield case 210 , only a part of the internal structure is visible. The shield case 210 may be typically formed in a polyhedral shape. Specifically, the shield case 210 may be formed in a hexahedral shape. The shield case 210 forms a part of the base 200 of the lens driving device, which will be described later, and can accommodate various components of the lens driving device therein. The shield case 210 may be formed of a hard material to protect various components accommodated therein. In addition, the shield case 210 is formed of a metal material and may perform a function of shielding electromagnetic wave (EMI) noise introduced from the outside or generated from the inside and leaked to the outside.

The shield case 210 has an opening 211 through which the top surface of the lens barrel 100 can be exposed is formed on the top surface. And, although not shown, the lower surface of the shield case 210 is also formed in an open form. In the shield case 210, an open path of light traveling along the optical axis is secured by the open portion of the upper surface opening 211 and the lower surface.

The upper surface of the lens barrel 100 is exposed through the upper surface opening 211 of the shield case 210, and specifically, a lens accommodated in the lens barrel 100 is positioned to be exposed through the opening 211. The lens barrel 100 can be moved by an autofocus driving unit 600 and a stabilization driving unit 400, 700, which will be described later. The opening 211 of the shield case 210 prevents the movement of the lens barrel 100. In consideration of this, it may be formed to be larger than the upper surface of the lens barrel 100 .

FIG. 2 is a cross-sectional view of a lens driving device according to an embodiment of the present invention taken along line AA′ of FIG. 1 . 3 is a cross-sectional view of a lens driving device according to an embodiment of the present invention taken along line BB′ of FIG. 1 . 4 is an exploded perspective view of a lens driving device according to an embodiment of the present invention.

2 to 4, the lens driving device of the present invention includes a lens barrel 100, a base 200, a vibration compensation carrier 300, a vibration compensation driver 400, an autofocus carrier 500, an autofocus It includes a driving unit 600, a ball bearing 700, a spring 800, a flexible printed circuit board 240, and a position sensor.

Although not shown in the drawings, an image sensor unit may be coupled to a lower portion of the lens driving device of the present invention. The image sensor unit may include an image sensor, a circuit board on which the image sensor is mounted, and an optical filter covering the image sensor. This image sensor unit is combined in a form covering the lower surface of the base 200 and is located in the lower portion of the lens barrel 100 .

Light traveling in the direction of the optical axis passes through the lens barrel 100 and forms an image on the image sensor. The image sensor converts the irradiated optical signal into an electrical signal and outputs it.

5 to 17 are disassembled views of a part or all of the lens driving device according to the present invention. Hereinafter, each part of the lens driving device according to the present invention will be described in detail with reference to FIGS. 5 to 17 together with FIGS. 2 to 4 .

5 is a perspective view illustrating an exploded portion corresponding to a base portion of the lens driving device according to the present invention. 6 is a cross-sectional view of a portion corresponding to a base portion of the lens driving device of the present invention.

The base 200 is relatively fixed to the lens barrel 100 in the lens driving device. Specifically, the lens barrel 100 is accommodated inside the base 200 and moves in the optical axis direction together with the autofocus carrier 500, and moves in a direction orthogonal to the optical axis together with the vibration compensation carrier 300. Specifically, movement in the optical axis direction may be movement in the z-axis direction, and movement in a direction orthogonal to the optical axis may be movement in the x-axis or y-axis direction. Here, the movement of the lens barrel 100 corresponds to a relative movement with respect to the base 200 .

The base 200 may include a shield case 210 , a cover housing 220 and a lower plate 230 . The cover housing 220 is located inside the shield case 210 . Like the shield case 210, the cover housing 220 may have an opening through which the upper surface of the lens barrel 100 is exposed, and an open lower surface. The cover housing 220 is formed to have multiple sides. The cover housing 220 may be formed to have four sides, for example, as shown in the accompanying drawings.

The cover housing 220 may be coupled to the flexible printed circuit board 240 and the vibration compensation coil 420 . Specifically, a coupling part to which the flexible printed circuit board 240 can be coupled may be formed in the cover housing 220 . The coupling portion may be formed as a protrusion or the like, and may be coupled in a form inserted into a hole of the flexible printed circuit board 240 . The vibration compensation coil 420 may be coupled to a side surface of the cover housing 220 . One end of the flexible printed circuit board 240 may be exposed to the outside of the base 200 . An input/output terminal 241 is formed on the exposed portion of the flexible printed circuit board 240 so that signals can be transmitted and power can be supplied.

The lower plate 230 is coupled to the open lower surfaces of the shield case 210 and the cover housing 220 . An opening is formed in the center of the lower plate 230 . The opening of the lower plate 230 is formed at a position opposite to the opening of the upper surface of the shield case 210 and the cover housing 220 to secure a path of light traveling along the optical axis. The lens barrel 100 is positioned between the openings of the upper surfaces of the shield case 210 and the cover housing 220 and the opening of the lower plate 230 .

7 is a lens barrel 100, a lower plate 230, a shake compensation carrier 300, a shake compensation driver 400, an autofocus carrier 500, an autofocus driver 600, It is a perspective view showing parts corresponding to the ball bearing 700 and the spring 800. FIG. 8 is a perspective view illustrating each component of FIG. 7 in an exploded manner. 9 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line CC′ of FIG. 7 . 10 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line DD′ of FIG. 7 .

Referring to FIGS. 7 to 10 , the vibration compensation driving unit 400 driving the vibration compensation carrier 300 will be described.

The shake compensation carrier 300 has an upper surface and a lower surface, and is formed to have a plurality of side surfaces. The side of the shake compensation carrier 300 is preferably formed to face the side of the base 200 . For example, as shown in the accompanying drawings, the shake compensation carrier 300 may be formed to have four side surfaces opposite to the four side surfaces of the base 200 .

The shake compensation carrier 300 may include a magnet holder 310 . The magnet holder 310 may be formed to surround the side of the vibration compensation carrier 300 . The side of the magnet holder 310 is opposite to the side of the cover housing 220, and a magnet coupling part 311 to which the magnet 410 is coupled is formed. The magnet 410 is coupled to the magnet coupler 311, and at least a portion of the magnet 410 is disposed to face the vibration compensation coil 420 coupled to the cover housing 220.

The shake compensation carrier 300 is located on the lower plate 230 of the base 200 . At least one ball bearing 700 is positioned between the vibration compensation carrier 300 and the lower plate 230 . The ball bearing 700 supports the shake compensation carrier 300 so as to be movable with respect to the base 200 in a direction orthogonal to the optical axis.

The vibration compensation carrier 300 is placed in close contact with the lower plate 230 with the ball bearing 700 interposed therebetween. The vibration compensation carrier 300 and the lower plate 230 may be brought into close contact with each other by magnetic force. Specifically, a yoke 231 or a magnet 231 may be disposed on the lower plate 230 . The yoke 231 or the magnet 231 of the lower plate 230 is disposed at a position opposite to the magnet 410 coupled to the vibration compensation carrier 300, and mutual attraction may occur. By this attractive force, the vibration compensation carrier 300 may be in close contact with the lower plate 230 with the ball bearing 700 interposed therebetween. In addition, after the vibration compensation carrier 300 moves in a direction perpendicular to the optical axis by this attraction, it can return to its initial position by the attraction when the external force is removed.

The ball bearing 700 may include a ball 710 and a cavity 721 providing a limited space in which the ball may be accommodated and moved. The cavity 721 may be formed in a groove shape on the lower surface 320 of the vibration compensation carrier and the upper portion of the lower plate 230 . The cavity 721 may also be formed by an opening formed in the bearing plate 720 positioned between the lower surface 320 of the vibration compensation carrier and the upper surface of the lower plate 230 . The bearing plate 720 may be fixedly coupled to either the lower surface 320 of the vibration compensation carrier or the upper surface of the lower plate 230 . In the accompanying drawings, it is shown that the bearing plate 720 is fixedly coupled to the lower surface 320 of the vibration compensation carrier, but it is also possible that the bearing plate 720 is fixedly coupled to the upper surface of the lower plate 230. For fixed coupling, grooves and protrusions may be formed. Specifically, protrusions are formed on the lower surface 320 of the vibration compensation carrier or the upper surface of the lower plate 230, and the protrusions may be inserted into grooves formed in the bearing plate 720 and coupled thereto.

The cavity 721 is formed larger than the diameter of the ball 710 so that when the vibration compensation carrier 300 moves in a direction perpendicular to the optical axis by an external force, the ball 710 rolls inside the cavity 721 and functions as a bearing. do. A lubricant is applied around the ball 710 to minimize friction. A plurality of balls 710 are formed to stably support the vibration compensation carrier 300 . For example, a plurality of balls 710 are formed at positions symmetrical to the optical axis to stably support the vibration compensation carrier 300 .

An electrical signal may be transmitted through the ball 710 of the ball bearing 700 . Here, the electrical signal may be a signal applied from the outside to the autofocus coil 620 . Specifically, a conduction path of the lower plate 230 and a conduction path of the lower surface of the vibration compensation carrier 300 may be electrically connected through the ball 710 . Here, the conduction path extends near the cavity 721 of the ball bearing 700. To this end, the ball 710 may be formed of a conductive material. In addition, the lubricant applied around the ball 710 may be formed of a conductive material.

The shake compensation carrier 300 accommodates the lens barrel 100 and the autofocus carrier 500 therein. As the image stabilization carrier 300 moves in a direction orthogonal to the optical axis, the lens barrel 100 and the autofocus carrier 500 also move together with the image stabilization carrier 300 .

The shake compensation driver 400 includes a magnet 410 and a shake compensation coil 420 . The magnet 410 is coupled to the vibration compensation carrier 300 . Specifically, as described above, the magnet 410 may be coupled to the magnet holder 310 of the vibration compensation carrier 300 . The vibration compensation coil 420 is coupled to the base 200 . Specifically, as described above, the vibration compensation coil 420 may be coupled to the cover housing 220 . At least a portion of the magnet 410 and the vibration compensation coil 420 may be disposed to face each other.

A plurality of magnets 410 and vibration compensation coils 420 may be formed. The plurality of magnets 410 and the vibration compensation coil 420 are oriented in different directions orthogonal to the optical axis. For example, as shown in the accompanying drawings, the magnet 410 and the vibration compensation coil 420 may be coupled to four side surfaces and disposed to face each other. Here, the magnet 410 and the vibration compensation coil 420 may be disposed orthogonally to the neighboring magnet 410 and the vibration compensation coil 420 .

The vibration compensation coil 420 is formed in a winding form around an axis perpendicular to the optical axis. The vibration compensation coil 420 may be coupled to the flexible printed circuit board 240 coupled to the base 200 . The vibration compensation coil 420 may receive an electrical signal from a circuit formed on the flexible printed circuit board 240 . The circuit formed on the flexible printed circuit board 240 is connected to the input/output terminal 241 to receive electrical signals and power from the outside.

When current is applied to the vibration compensation coil 420, the vibration compensation carrier 300 is moved in a direction orthogonal to the optical axis by interaction with the magnet 410. The movement direction of the vibration compensation carrier 300 may be controlled by the direction of the current applied to the vibration compensation coil 420 .

A position sensor may be coupled to the flexible printed circuit board 240 coupled to the base 200 . The position detection sensor is coupled to face the magnet 410, and may detect movement of the vibration compensation carrier 300 in a direction orthogonal to the optical axis. The position detection sensor may be formed of, for example, a Hall element.

11 is a perspective view showing parts corresponding to the lens barrel 100, the autofocus carrier 500, the autofocus driver 600, and the shake compensation carrier 300 of the lens driving device according to the present invention. FIG. 12 is a perspective view illustrating each component of FIG. 11 in an exploded manner. 13 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line EE′ of FIG. 11 . 14 is a cross-sectional view of a part of the lens driving device according to an exemplary embodiment taken along line FF′ of FIG. 11 .

Referring to FIGS. 11 to 14 , the autofocus driver 600 driving the autofocus carrier 500 will be described.

The lens barrel 100 may be formed in a cylindrical shape. The lens barrel 100 has an open upper and lower surface, so that light can pass through the upper and lower surfaces. At least one lens is accommodated inside the lens barrel 100 . The lens moves along with the movement of the lens barrel 100 .

The autofocus carrier 500 is combined in a form accommodating the lens barrel 100 . The autofocus carrier 500 and the lens barrel 100 move integrally. The autofocus carrier 500 and the lens barrel 100 are located inside the stabilization carrier 300 .

The autofocus driver 600 includes a magnet 610 and a coil 620 for autofocus. The magnet 610 of the autofocus driver 600 is coupled to the vibration compensation carrier 300. The magnet 610 of the autofocus driver 600 may be the same as the magnet 410 of the shake compensation driver 400 . That is, one magnet 410 or 610 may be used both as the magnet 610 of the autofocus driver 600 and the magnet 410 of the shake compensation driver 400 .

The autofocus coil 620 is coupled to the autofocus carrier 500 . At least a portion of the autofocus coil 620 is opposed to the magnet 610 . The autofocus coil 620 is wound around the optical axis.

When current is applied to the autofocus coil 620, the autofocus carrier 500 is moved in the optical axis direction by interaction. The moving direction of the autofocus carrier 500 may be controlled by the direction of the current applied to the autofocus coil 620 .

A position detection sensor may be coupled to the autofocus carrier 500 . The position detection sensor may be coupled to face the magnet 610 and detect movement of the autofocus carrier 500 in the optical axis direction. The position detection sensor may be formed of, for example, a Hall element.

The autofocus carrier 500 may be supported to move in the optical axis direction by the spring 800 . The spring 800 may include an upper spring 810 coupled to an upper portion of the autofocus carrier 500 and a lower spring 820 coupled to a lower portion of the autofocus carrier 500 . The spring 800 may elastically support the movement of the autofocus carrier 500 in the optical axis direction.

The spring 800 is formed in the form of a plate spring, and may be composed of an inner circumferential portion, an outer circumferential portion, and an extension portion extending from the inner circumferential portion to the outer circumferential portion. An inner circumference of the spring 800 may be coupled to the autofocus carrier 500 . An outer circumference of the spring 800 may be coupled to the vibration compensation carrier 300 . The extension of the spring 800 is elastically deformed to support the movement of the autofocus carrier 500 in the optical axis direction with respect to the shake compensation carrier 300 .

An electrical signal may be transmitted through the spring 800 . Here, the electrical signal may be a signal applied from the outside to the autofocus coil 620 . Specifically, the conduction path of the stabilization carrier 300 and the conduction path of the autofocus carrier 500 may be electrically connected through the ball 710 . Here, the conduction path extends to the spring 800. Also, in some cases, the conduction path of the stabilization carrier 300 and the autofocus coil 620 may be directly connected. To this end, the spring 800 may be formed of a conductive material.

In summary of the above, the lens barrel 100 can move in the optical axis direction with respect to the base 200 and can move in a direction orthogonal to the optical axis. The autofocus carrier 500 may move the lens barrel 100 by moving in an optical axis direction relative to the stabilization carrier 300 . Also, the stabilization carrier 300 may move relative to the base 200 in a direction orthogonal to the optical axis to move the lens barrel 100 in a direction orthogonal to the optical axis.

In the above, the embodiments of the lens driving device of the present invention have been described. The present invention is not limited to the above-described embodiments and accompanying drawings, and various modifications and variations will be possible from the viewpoint of those skilled in the art to which the present invention belongs. Therefore, the scope of the present invention should be defined by the claims of this specification as well as those equivalent to these claims.

100: lens barrel
200: base 210: shield case
220: cover housing 230: lower plate
231: yoke 240: flexible circuit board
241: input/output terminal
300: shake compensation carrier 310: magnet holder
311: magnet coupling part 320: the lower surface of the shake compensation carrier
400: vibration compensation driving unit 410: magnet
420: vibration compensation coil
500: autofocus carrier
600: autofocus driving unit 620: coil for autofocus
700: ball bearing 710: ball
720: bearing plate 721: cavity
800: spring 810: upper spring
820: lower spring

Claims (19)

A lens driving device including a lens barrel accommodating a lens,
Base;
a shake compensation carrier positioned on the base;
a shake compensation driver for moving the shake compensation carrier in a direction orthogonal to an optical axis;
an autofocus carrier positioned inside the shake compensation carrier;
an autofocus driver moving the autofocus carrier in an optical axis direction;
at least one ball bearing supporting the vibration compensation carrier to be movable in a direction orthogonal to an optical axis with respect to the base, the ball bearing including a plurality of balls supporting the vibration compensation carrier; and
At least one spring supporting the autofocus carrier to be movable in an optical axis direction with respect to the shake compensation carrier;
The autofocus driver,
an autofocus coil wound around the autofocus carrier; and
At least one magnet coupled to the shake compensation carrier and at least partially opposed to the autofocus coil;
The ball, the autofocus coil, and the spring form an electrically connected conduction path;
The spring includes an outer circumferential portion and an inner circumferential portion extending inwardly from the outer circumferential portion and elastically deformable in an optical axis direction with respect to the outer circumferential portion,
The outer circumferential portion is coupled to the shake compensation carrier, and the inner circumferential portion is coupled to the autofocus carrier;
The spring includes an upper spring and a lower spring positioned lower than the upper spring,
The outer circumference of any one of the upper spring and the lower spring is connected as one, and the outer circumference of the other of the upper spring and the lower spring is separated into two.
lens drive unit. delete delete delete delete According to claim 1,
The vibration compensation carrier is positioned in close contact with the base with the ball bearing interposed therebetween.
According to claim 1,
The shake correction driving unit,
at least one magnet coupled to the stabilization carrier; and
A lens driving device including at least one vibration compensation coil coupled to the base and at least partially opposed to the magnet.
According to claim 7,
The lens driving device in which the shake correction coil is wound around an axis in a direction orthogonal to an optical axis.
According to claim 7,
The lens driving device comprising two or more shake correction coils oriented in two different directions orthogonal to an optical axis.
According to claim 9,
The two or more vibration compensation coils oriented in two different directions are oriented to be orthogonal to each other.
According to claim 7,
Further comprising a flexible circuit board coupled to the base,
The vibration correction coil is coupled to the flexible circuit board and receives an electric signal from a circuit formed on the flexible circuit board.
According to claim 11,
coupled to the flexible circuit board so as to face the magnet,
The lens driving device further comprises a position detection sensor for detecting movement in a direction orthogonal to the optical axis of the shake compensation carrier.
delete According to claim 1,
The lens driving device in which the autofocus coil is wound around an optical axis.
According to claim 1,
Coupled to the autofocus carrier to face the magnet,
The lens driving device further comprises a position detection sensor for detecting a movement of the autofocus carrier in an optical axis direction.
According to claim 1,
The shake correction driving unit,
the magnet; and
A lens driving device including at least one vibration compensation coil coupled to the base and at least partially opposed to the magnet.
According to claim 1,
The autofocus carrier is a lens driving device that moves in an optical axis direction relative to the shake compensation carrier.
According to claim 1,
When the stabilization compensation carrier moves in a direction orthogonal to the optical axis, the autofocus carrier moves in a direction orthogonal to the optical axis together with the shake compensation carrier.
According to claim 1,
The lens driving device of claim 1 , wherein the lens barrel moves in an optical axis direction according to movement of the autofocus carrier in the optical axis direction, and moves in a direction perpendicular to the optical axis according to movement of the image stabilization carrier in a direction perpendicular to the optical axis.

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