KR20210004320A - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

An embodiment provides a lens driving device comprising: a substrate; a housing disposed on the substrate; a bobbin disposed in the housing; a first coil disposed on the bobbin; a sensing magnet disposed on the bobbin; a magnet corresponding to the first coil; and a second coil corresponding to the magnet in the optical axis direction; and a first sensor and a second sensor disposed on the substrate. The first sensor corresponds to the magnet in the optical axis direction, the second sensor corresponds to the sensing magnet in the optical axis direction, and the magnet is disposed at a corner of the housing. According to the present invention, errors in AF or OIS operation due to magnetic field interference can be prevented.

Description

A lens driving device, and a camera module and optical device including the same TECHNICAL FIELD [0002] A LENS MOVING UNIT, AND CAMERA MODULE AND OPTICAL INSTRUMENT INCLUDING THE SAME}

The embodiment relates to a lens driving device, a camera module including the same, and an optical device.

Camera modules for ultra-compact and low power consumption are difficult to apply the technology of a voice coil motor (VCM) used in a conventional camera module, and related studies have been actively conducted.

Demand and production of electronic products such as smart phones and mobile phones equipped with cameras are increasing. Mobile phone cameras are trending toward higher pixel and smaller size, and accordingly, actuators are also becoming smaller, larger, and multifunctional. In order to implement a high-pixel mobile phone camera, additional functions such as improved performance of the mobile phone camera, auto focusing, improved shutter shake, and a zoom function are required.

The embodiment provides a lens driving device capable of preventing a decrease in AF operation performance due to sagging or movement of an OIS moving part due to gravity and improving resolution, and a camera module and an optical device including the same.

In addition, the embodiment provides a camera module and an optical device capable of preventing errors in AF or OIS operation due to magnetic field interference.

The lens driving apparatus according to the embodiment includes a substrate; A housing disposed on the substrate; A bobbin disposed in the housing; A first coil disposed on the bobbin; A sensing magnet disposed on the bobbin; A first magnet, a second magnet, and a third magnet disposed in the housing; A dummy member disposed in the housing; An elastic member coupled to the bobbin and the housing; A support member connecting the elastic member and the substrate; A first position sensor disposed on the substrate and corresponding to the sensing magnet; A second coil including first to third coil units corresponding to the first to third magnet units in an optical axis direction; And a first sensor disposed on the substrate and corresponding to the first magnet and a second sensor corresponding to the third magnet, wherein the first magnet and the second magnet are located opposite to each other, and the third magnet And the dummy member are located opposite to each other.

The sensing magnet may overlap with the first position sensor in the optical axis direction, the first sensor may overlap with the first magnet in the optical axis direction, and the second sensor may overlap with the third magnet in the optical axis direction. have.

The first coil may be disposed to surround an outer surface of the bobbin, and the sensing magnet may be disposed outside the first coil.

The bobbin may include a protrusion protruding from an outer surface, and the sensing magnet may be coupled to the protrusion.

The dummy member may include a groove corresponding to the protrusion, and at least a portion of the protrusion may be disposed in the groove of the dummy member.

The sensing magnet may protrude from a lower surface of the bobbin.

The dummy member may not overlap with the second coil in the optical axis direction.

The dummy member includes a first surface facing the first coil and a second surface opposite to the first surface, and the groove of the dummy member is the first surface or the second surface of the dummy member Can be formed in

The dummy member includes a first dummy and a second dummy spaced apart from each other,

At least a portion of the sensing magnet may be disposed between the first dummy and the second dummy.

The groove of the dummy member may include at least one of a first opening opened to a lower surface of the dummy member facing the substrate and a second opening open to an upper surface of the dummy member.

The dummy member may be a non-magnetic material.

The first position sensor outputs an output signal according to a result of detecting the strength of the magnetic field of the sensing magnet when the bobbin is moved in the direction of the optical axis, and when the housing is moved in a direction perpendicular to the optical axis, The first sensor may output an output signal according to a result of detecting the strength of the magnetic field of the first magnet, and the second sensor may output an output signal according to a result of detecting the strength of the magnetic field of the third magnet. have.

A lens driving device according to another embodiment includes a fixing unit; An AF movable part including a bobbin, and an OIS movable part including a housing; A first elastic part supporting the AF movable part with respect to the housing; A second elastic part supporting the OIS movable part with respect to the fixed part; A first coil disposed on the bobbin; A sensing magnet disposed on the bobbin; A first magnet and a second magnet disposed on the housing and positioned opposite to each other; A third magnet and a dummy member disposed in the housing and positioned opposite to each other; A second coil including first to third coil units corresponding to the first to third magnet units in an optical axis direction; An AF position sensor disposed on the fixing unit and corresponding to the sensing magnet; And a first sensor disposed on the fixing part and corresponding to the first magnet and a second sensor corresponding to the third magnet.

The embodiment may prevent a decrease in AF operation performance due to deflection or movement of the OIS moving part due to gravity, and improve resolution.

In addition, the embodiment may prevent an error in AF or OIS operation due to magnetic field interference.

1 is an exploded perspective view of a lens driving apparatus according to an embodiment.
FIG. 2 is a perspective view illustrating a lens driving apparatus other than the cover member of FIG. 1.
3A is a perspective view of a bobbin and a sensing magnet.
3B is a perspective view of a bobbin, a first coil, and a sensing magnet.
3C is a perspective view of a first coil and a sensing magnet coupled to a bobbin.
Figure 4a shows a perspective view of the housing shown in Figure 1;
4B is a perspective view of a housing, a magnet, and a dummy member.
4C is a perspective view illustrating a combination of a housing, a magnet, and a dummy member.
5A is a perspective view of an upper elastic member.
5B is a perspective view of a lower elastic member.
6 is a view for explaining an electrical connection relationship between an upper elastic member, a support member, and a circuit board.
7 is an exploded perspective view of a second coil, a circuit board, a second position sensor, and a base.
8A is a cross-sectional view of the lens driving device in the AB direction of FIG. 2.
8B is a cross-sectional view of the lens driving device in the CD direction of FIG. 2.
8C is a cross-sectional view of the lens driving device in the EF direction of FIG. 2.
9 is a bottom view of a bobbin in which a first coil and a sensing magnet are disposed, and a housing in which the magnet and dummy member are disposed.
10 is a view showing a second coil, a first position sensor, and first and second sensors in the bottom view of FIG. 9.
11 shows arrangements of first to third magnet units, a dummy member, and a sensing magnet.
12 shows arrangements of first to third magnet units, a dummy member, a sensing magnet, a first position sensor, a first sensor, and a second sensor.
13 is a graph showing frequency response characteristics of a lens driving device.
14 is a view for explaining the relationship between the stroke range in the direction perpendicular to the optical axis of the OIS movable unit, the size of the sensing magnet, and the arrangement of the first position sensor.
15A shows a dummy member according to another embodiment.
15B shows a dummy member according to another embodiment.
16 is a view for explaining a sensing operation of the first position sensor to compensate for the deflection of the OIS movable unit due to the influence of gravity.
17 is an exploded perspective view of a camera module according to an embodiment.
18 is a perspective view of a portable terminal according to an embodiment.
19 is a block diagram of the portable terminal shown in FIG. 18.
20 is a perspective view of a camera module according to another embodiment.
21A is an embodiment of a dual camera module mounted on a terminal.
21B is another embodiment of a dual camera module mounted on a terminal.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various different forms, and within the scope of the technical idea of the present invention, one or more of the constituent elements may be selectively selected. It can be combined with and substituted for use.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention have meanings that can be generally understood by those of ordinary skill in the technical field to which the present invention belongs, unless explicitly defined and described. It can be interpreted as, and generally used terms such as terms defined in a dictionary may be interpreted in consideration of the meaning of the context of the related technology.

In addition, terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention. In the present specification, the singular form may also include the plural form unless specifically stated in the phrase, and when described as "at least one (or more than one) of A and (and) B and C", it is combined with A, B, C. It may contain one or more of all possible combinations.

In addition, terms such as first, second, A, B, (a), and (b) may be used in describing the constituent elements of the embodiment of the present invention. These terms are only for distinguishing the component from other components, and are not limited to the nature, order, or order of the component by the term.

And, when a component is described as being'connected','coupled' or'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also the component and The case of being'connected','coupled' or'connected' due to another component between the other components may also be included. In addition, when it is described as being formed or disposed on the “top (top) or bottom (bottom)” of each component, the top (top) or bottom (bottom) is one as well as when the two components are in direct contact with each other. It also includes a case in which the above other component is formed or disposed between the two components. In addition, when expressed as "upper (upper) or lower (lower)", it may include not only an upward direction but also a downward direction based on one component.

Hereinafter, the lens driving device may be referred to as a lens driver, a voice coil motor (VCM), an actuator, or a lens moving device, and the term "coil" is referred to as a coil unit. The term "elastic member" may be replaced with an elastic unit or a spring.

In addition, in the following description, "terminal" may be represented by replacing it with a pad, an electrode, a conductive layer, or a bonding part.

For convenience of description, the lens driving apparatus according to the embodiment is described using a Cartesian coordinate system (x, y, z), but may be described using other coordinate systems, and the embodiment is not limited thereto. In each drawing, the x-axis and y-axis mean a direction perpendicular to the z-axis, which is the optical axis direction, the z-axis direction, which is the optical axis (OA) direction, is called the'first direction', and the x-axis direction is called the'second direction'. And the y-axis direction may be referred to as a'third direction'.

The lens driving apparatus according to the embodiment may perform an'auto focusing function'. Here, the auto-focusing function refers to automatically focusing the image of the subject on the image sensor surface.

In addition, the lens driving apparatus according to the embodiment may perform a'image stabilization function'. Here, the image stabilization function refers to preventing that the outline of the captured image is not formed clearly due to vibration caused by the user's hand shake when capturing a still image.

1 is an exploded perspective view of a lens driving apparatus 100 according to an embodiment, and FIG. 2 is a combined perspective view of a lens driving apparatus 100 excluding the cover member 300 of FIG. 1.

1 and 2, the lens driving device 100 includes a bobbin 110, a first coil 120, a magnet 130, a dummy member 135, a housing 140, and an upper elastic member ( 150), a lower elastic member 160, a first position sensor 170, a sensing magnet 180, and a second coil 230, and a circuit board 250.

In addition, the lens driving apparatus 100 may further include at least one of the support member 220, the second position sensor 240, the base 210, and the cover member 300.

First, the bobbin 110 will be described.

The bobbin 110 is disposed inside the housing 140, and in the optical axis (OA) direction or the first direction (eg, Z-axis direction) by an electromagnetic interaction between the first coil 120 and the magnet 130. Can be moved.

3A shows a perspective view of the bobbin 110 and the sensing magnet 180, FIG. 3B shows a perspective view of the bobbin 110, the first coil 120, and the sensing magnet 180, and FIG. 3C is a bobbin ( It shows a perspective view of the first coil 120 and the sensing magnet 180 coupled to 110).

3A to 3C, the bobbin 110 may have an opening for mounting a lens or a lens barrel. For example, the opening of the bobbin 110 may be a through hole penetrating the bobbin 110 in the optical axis direction, and the shape of the opening of the bobbin 110 may be circular, elliptical, or polygonal, but is not limited thereto. .

The lens may be directly mounted to the opening of the bobbin 110, but is not limited thereto. In another embodiment, a lens barrel for mounting or coupling at least one lens may be coupled or mounted to the opening of the bobbin 110. have. The lens or lens barrel may be coupled to the inner peripheral surface of the bobbin 110 in various ways.

The bobbin 110 may include first side portions 110b1 to 110b4 spaced apart from each other and second side portions 110c1 to 110c4 spaced apart from each other, and each of the second side portions 110c1 to 110c4 is two adjacent The first sides of the dog may be connected to each other. For example, the length of each of the first side portions 110b1 to 110b4 of the bobbin 110 in the horizontal direction or in the horizontal direction may be different from the length of each of the second side portions 110c1 to 110c4 in the horizontal direction or the horizontal direction. It is not limited, and in other embodiments, both may be the same.

The bobbin 110 may include a protrusion 115 provided on an outer surface. For example, the protrusion 115 may be disposed on an outer surface of at least one of the first and second side portions 110b1 to 110b4 and 110c1 to 110c4 of the bobbin 110, but is not limited thereto. The protrusion 115 may pass through the center of the opening of the bobbin 110 and protrude in a direction parallel to a straight line perpendicular to the optical axis, but is not limited thereto.

The protrusion 115 of the bobbin 110 corresponds to the groove 25a of the housing 140 and may be inserted or disposed in the groove 25a of the housing 140, and the bobbin 110 is constant around the optical axis. Rotation beyond the range can be suppressed or prevented.

In addition, even if the protrusion 115 moves beyond a prescribed range in the direction of the optical axis (eg, from the upper elastic member 150 to the lower elastic member 160) due to an external impact, the bobbin 110 The lower surface may act as a stopper for suppressing or preventing direct collision with the base 210, the second coil 230, or the circuit board 250.

In addition, the bobbin 110 may protrude from the outer surface of the bobbin 110 in a direction perpendicular to the optical axis, and may include a protrusion 116 through which the sensing magnet 180 is disposed.

Referring to FIG. 3B, for example, the protrusion 116 may be formed on the outer surface of the second side portion 110c4 of the bobbin 110.

The protrusion 116 may have a groove or hole 116A for placing or seating the sensing magnet 180. The shape of the hole 116A may correspond to or match the sensing magnet 180, but is not limited thereto, and a shape in which the sensing magnet 180 can be coupled is sufficient.

For example, the hole 116A may be formed on the lower surface of the protrusion 116, but is not limited thereto. In another embodiment, the hole may be formed on at least one of the upper surface or the side surface of the protrusion 116.

Since the sensing magnet 180 is mounted in the hole 116A of the protrusion 116, a process for coupling the sensing magnet 180 to the bobbin 110 after mounting the first coil 120 on the bobbin 110 is performed. It can be performed simply and easily.

Also, like the protrusion 115 of the bobbin 110, the protrusion 116 may suppress or prevent the bobbin 110 from rotating beyond a certain range around the optical axis.

A first escape groove 112a may be provided on the upper surface of the bobbin 110 to avoid spatial interference with the first frame connection part 153 of the upper elastic member 150, and a lower elasticity is provided on the lower surface of the bobbin 110. A second escape groove 112b for avoiding spatial interference with the second frame connecting portion 163 of the member 160 may be provided.

For example, the first and second escape grooves 112a and 112b may be disposed on the first side portions 110b1 to 110b4 of the bobbin 110, but are not limited thereto, and the first and second evacuation grooves 112a and 112b of the bobbin 110 It may be formed on at least one of the second sides.

A guide part 111 for guiding an installation position of the upper elastic member 150 may be provided on the upper surface of the bobbin 110. For example, as illustrated in FIG. 3A, the guide part 111 of the bobbin 110 is in the first escape groove 112a to guide the path through which the frame connection part 153 of the upper elastic member 150 passes. Can be placed. For example, the guide part 111 may protrude from the bottom surface of the first escape groove 112a in the optical axis direction.

The bobbin 110 may include a stopper 114 protruding from the upper surface.

The stopper 114 of the bobbin 110 is the upper surface of the bobbin 110 even if the bobbin 110 moves beyond a prescribed range due to an external impact or the like when the bobbin 110 moves in the first direction for the auto-focusing function. It may play a role of preventing direct collision with the inner side of the upper plate of the cover member 300.

The bobbin 110 may include a first coupling part 113 for coupling and fixing to the upper elastic member 150. For example, in FIG. 3A, the first coupling part 113 of the bobbin 110 has a protrusion shape, but is not limited thereto. In another embodiment, the first coupling part 113 of the bobbin 110 has a groove or a flat shape. I can.

In addition, the bobbin 110 may include a second coupling portion 117 for coupling and fixing to the lower elastic member 160, and in FIG. 3B, the second coupling portion 117 of the bobbin 110 has a protrusion shape. However, the present invention is not limited thereto, and in another embodiment, the second coupling portion of the bobbin 110 may have a groove or a planar shape.

A seating groove 105 in which the first coil 120 is seated, inserted, or disposed on the outer surface of the bobbin 110 may be provided. The seating groove 105 may have a groove structure recessed from the outer surface of the first and second side portions 110b1 to 110b4, 110c1 to 110c4 of the bobbin 110, and match the shape of the first coil 120 It may have a shape, a closed curve shape (eg, a ring shape).

In addition, when connecting the first coil 120 with the upper elastic members 150-1 and 150-2, in order to suppress the separation of the first coil 120 and guide both ends of the first coil 120, a bobbin ( Guide grooves 116a and 116b may be provided on the lower surfaces of the two side portions located opposite to each other of 110).

Although not shown in FIG. 3A, an additional protrusion having a shape corresponding to the protrusion 116 may be formed on the opposite side of the outer surface of the bobbin 110 on which the protrusion 116 is formed, and a sensing magnet 180 may be formed at the additional protrusion. A balancing magnet may be arranged to balance the weight and weight. In another embodiment, due to spatial interference with the magnet, an additional protrusion may be omitted in the bobbin, and the bobbin is a groove or hole for receiving the balancing magnet on the opposite side of the outer surface of the bobbin 110 on which the protrusion 116 is formed. It may be provided.

The effect of the AF driving force due to magnetic field interference between the magnet 130 and the sensing magnet 180 and the AF driving force due to the magnetic field interference between the magnet 130 and the balancing magnet may be canceled out from each other. Auto Focusing) Driving accuracy can be improved.

A screw wire for coupling with a lens or a lens barrel may be provided on the inner circumferential surface of the bobbin 110. A thread can be formed on the inner circumferential surface of the bobbin 110 while the bobbin 110 is fixed by a jig, etc., and grooves 15a and 15b for fixing a jig are provided on the upper surface of the bobbin 110 Can be. For example, the jig fixing grooves 15a and 15b may be provided on the upper surfaces of two side portions located opposite the bobbin 110, but are not limited thereto. The jig fixing grooves 15a and 15b may function as a foreign material collecting part for collecting foreign materials.

Next, the first coil 120 will be described.

The first coil 120 is disposed on the outer surface of the bobbin 110.

The first coil 120 may be disposed inside the sensing magnet 180, but is not limited thereto.

For example, the height of the upper end (or upper surface) of the first coil 120 may be located smaller than the lower surface of the protrusion 116 of the bobbin 110, but is not limited thereto, and in another embodiment, the first coil 120 The height of the lower end (or lower surface) of the bobbin 110 may be positioned higher than the upper surface of the protrusion 116 of the bobbin 110.

For example, the first coil 120 may overlap the sensing magnet 180 in a direction perpendicular to the optical axis.

For example, the height of the lower end or the lower surface of the sensing magnet 180 may be lower than the height of the lower end or the lower surface of the first coil 120, and thus the sensing magnet 180 is disposed on the base 210. It may be disposed close to the 170), thereby improving the sensitivity of the first position sensor 170.

In addition, for example, the lower or lower surface of the sensing magnet 180 may be positioned lower than the lower or lower surface of the bobbin 110. For example, at least a portion (eg, lower portion) of the sensing magnet 180 may protrude in a downward direction with respect to the lower surface of the bobbin 110.

3C and 8B, a lower or lower surface of the sensing magnet 180 may be positioned lower than a lower or lower surface of the first coil 120.

For example, the length of the sensing magnet 180 in the optical axis direction may be equal to or greater than the length of the magnet 130 in the optical axis direction.

The second coil 230 may not be disposed between the circuit board 250 and the sensing magnet 180.

For example, the upper surface of the sensing magnet 180 may be positioned higher than the upper surface of the dummy member 135, and the lower surface of the sensing magnet 180 may be positioned higher than the lower surface of the dummy member 135, but is limited thereto. no. In another embodiment, the upper surface of the sensing magnet 180 may be positioned lower than the upper surface of the dummy member 135 or the same height, and the lower surface of the sensing magnet 180 may be positioned lower than the lower surface of the dummy member 135 or the same height. May be.

Alternatively, in another embodiment, the sensing magnet is not disposed in the hole 116A of the bobbin 110, but may be attached to the bottom surface or the bottom surface of the bobbin 110 by an adhesive. That is, the magnet 130 may protrude downward from the lower surface of the housing 140 and may be spaced apart from the circuit board 250 and the second coil 230, and thus, the lower end of the bobbin 110 and the circuit board A sensing magnet may be disposed in the space between 250 and/or the base 210. This has the advantage of securing a space for arranging the sensing magnet even in an embodiment including the four driving magnet units. In an embodiment in which the sensing magnet is disposed on the lower surface of the multi-faceted bobbin 110, there may be a restriction on the length of the sensing magnet in the optical axis direction, and thus the sensitivity of the first position sensor 170 may be reduced. However, when the sensing magnet 180 is disposed in the hole 116A of the protrusion 116 as shown in FIGS. 3B and 3C, the length of the sensing magnet 180 in the optical axis direction can be sufficiently secured. The sensitivity of the position sensor 170 may be improved.

For example, the first coil 120 may be disposed in the seating groove 105 of the bobbin 110, and the sensing magnet 180 may be inserted or disposed in the hole 116A of the bobbin 110.

The sensing magnet 180 disposed on the bobbin 110 may be positioned outside the first coil 120 disposed on the bobbin 110. The outside of the first coil 120 may be the opposite side of the center of the bobbin 110 with respect to the first coil 120.

For example, the separation distance from the center of the bobbin 110 (or the center of the opening of the bobbin 110) to the sensing magnet 180 is the first coil from the center of the bobbin 110 (or the center of the opening of the bobbin 110). May be greater than the distance to 120.

In order to improve the sensitivity of the first position sensor 170 for sensing the magnetic field of the sensing magnet 180, the first position sensor 170 may overlap the sensing magnet 180 in the optical axis direction. Since the sensing magnet 180 is disposed outside the first coil 120, the restriction on the size of the opening of the bobbin 110 may be reduced, and accordingly, the embodiment is designed to mount a large-diameter lens. It is possible.

The sensing magnet 180 disposed on the bobbin 110 may contact the first coil 120, but is not limited thereto, and may be spaced apart from the first coil 120 in a direction perpendicular to the optical axis in another embodiment. .

In addition, the sensing magnet 180 may overlap the first coil 120 in a horizontal direction.

For example, the sensing magnet 180 has a first portion that overlaps the first coil 120 in a direction perpendicular to the optical axis OA, and a first portion that does not overlap the first coil 120 in a direction perpendicular to the optical axis OA. May contain 2 parts. The second portion of the sensing magnet 180 may be positioned below the first portion of the sensing magnet 180.

The first coil 120 may wrap the outer surface of the bobbin 110 in a direction rotating around the optical axis OA, but is not limited thereto.

The first coil 120 may be wound directly on the outer surface of the bobbin 110, but is not limited thereto. In another embodiment, the first coil may be wound around the bobbin 110 using a coil ring, or may be provided as coil blocks or coil units having an angled ring shape.

According to another embodiment, the first coil 120 may include a plurality of coil units corresponding to the magnet 130. For example, it may include two coil units corresponding to the two magnet units 130-1 and 130-2 of the first coil 120, and each of the coil units is a ring wound around an axis perpendicular to the optical axis. It may have a shape or a coil block shape.

Power or a driving signal may be provided to the first coil 120.

The power or driving signal provided to the first coil 120 may be a DC signal or an AC signal, or may include a DC signal and an AC signal, and may be in the form of voltage or current.

The first coil 120 may generate an electromagnetic force through an electromagnetic interaction with the magnet 130 when a driving signal (eg, a driving current) is supplied, and the bobbin 110 in the direction of the optical axis OA by the formed electromagnetic force Can be moved.

At the initial position of the AF movable part, the bobbin 110 may be moved upward or downward, which is referred to as bidirectional driving of the AF movable part. Alternatively, at the initial position of the AF movable part, the bobbin 110 may be moved upward, which is referred to as unidirectional driving of the AF movable part.

At the initial position of the AF movable part, the first coil 120 in a direction perpendicular to the optical axis OA and parallel to a straight line passing through the optical axis may be disposed to correspond to or overlap with the magnet 130 disposed in the housing 140. have.

For example, the AF movable unit may include a bobbin 110 and components coupled to the bobbin 110 (eg, a first coil 120 and a sensing magnet 180).

And the initial position of the AF movable part is the initial position of the AF movable part in the state that power is not applied to the first coil 120, or the upper and lower elastic members 150 and 160 are elastically deformed only by the weight of the AF movable part. It may be a position where the movable part is placed.

In addition, the initial position of the bobbin 110 is the position where the AF movable part is placed when gravity acts from the bobbin 110 to the base 210, or vice versa, when the gravity acts from the base 210 to the bobbin 110. Can be

Next, the sensing magnet 180 will be described.

The sensing magnet 180 provides a magnetic field for the first position sensor 170 to sense.

The sensing magnet 180 may be disposed on the protrusion 116 of the bobbin 110. For example, the sensing magnet 180 may be coupled to the protrusion 116 of the bobbin 110.

For example, at least a portion of the sensing magnet 180 may be disposed in the hole 116A of the protrusion 116 and may be coupled to the hole 116A by an adhesive or the like. The sensing magnet 180 may be disposed to correspond or face the first position sensor 170 in the optical axis OA direction.

At least a part of one surface (eg, lower surface) of the sensing magnet 180 corresponding to the first position sensor 170 may be exposed from the hole 116A of the bobbin 110, but is not limited thereto. In an embodiment, one surface of the sensing magnet 180 facing the first position sensor 170 may not be exposed from the bobbin 110.

For example, the sensing magnet 180 disposed on the bobbin 110 may have an N-pole and S-pole interface parallel to a direction perpendicular to the optical axis OA. For example, the N pole and the S pole of the sensing magnet 180 may face each other in the optical axis direction, but are not limited thereto.

In another embodiment, the sensing magnet may be disposed so that the N pole and the S pole face each other in a direction perpendicular to the optical axis. For example, in another embodiment, the boundary between the N and S poles of the sensing magnet 180 disposed on the bobbin 110 may be parallel to the optical axis OA.

For example, the sensing magnet 180 may be a single-pole magnetized magnet having one N-pole and one S-pole, but is not limited thereto. In another embodiment, the sensing magnet 180 may be an anode magnetized magnet or a 4-pole magnet including two N poles and two S poles.

The sensing magnet 180 may have a cylindrical, cylindrical, semi-circular, or polyhedral shape, but is not limited thereto.

For example, the sensing magnet 180 may have a cylindrical shape in which the length in the direction of the optical axis is longer than the length in the direction perpendicular to the optical axis, and thus, it can be easily inserted or coupled into the hole 116A of the bobbin 110. have.

When the sensing magnet 180 has a cylindrical or cylindrical shape, the magnetic field distribution of the sensing magnet 180 detected by the first position sensor 170 may be uniform, thereby improving the sensitivity of the first position sensor 170 Can be.

For example, the cross-sectional shape of the sensing magnet 180 cut in a direction perpendicular to the optical axis may be circular, elliptical, or polygonal (eg, triangular or square), but is not limited thereto.

In another embodiment, the sensing magnet 180 may be disposed on the circuit board 250 or the base 210, and the first position sensor 170 may be disposed on the bobbin 110.

Next, the housing 140 will be described.

The housing 140 may be disposed inside the cover member 300, and may be disposed between the cover member 300 and the bobbin 110. The housing 140 may accommodate the bobbin 110 inside, and supports the magnet 130 and the dummy member 135.

The outer surface of the housing 140 may be spaced apart from the inner surface of the side plate 302 of the cover member 300, and the housing 140 is OIS (Optical) by a space between the housing 140 and the cover member 300. Image Stabilizer) can be moved.

4A shows a perspective view of the housing 140 shown in FIG. 1, FIG. 4B shows a perspective view of the housing 140, the magnet 130, and the dummy member 135, and FIG. 4C shows the housing 140, the magnet 130, and a combined perspective view of the dummy member 135, FIG. 5A is a perspective view of the upper elastic member 150, FIG. 5B is a perspective view of the lower elastic member 160, and FIG. 6 is an upper elastic member 150 ), the support member 220, and the circuit board 250 are diagrams for explaining the electrical connection relationship, and FIG. 7 is a second coil 230, a circuit board 250, a second position sensor 240, and An exploded perspective view of the base 210, FIG. 8A is a cross-sectional view of the lens driving device 100 in the AB direction of FIG. 2, FIG. 8B is a cross-sectional view of the lens driving device 100 in the CD direction of FIG. 2, and FIG. 8C is A cross-sectional view of the lens driving device 100 in the EF direction of FIG. 2.

4A to 4C, the housing 140 may have a hollow pillar shape as a whole. For example, the housing 140 may have a polygonal (eg, quadrangular or octagonal) or circular opening, and the opening of the housing 140 may be in the form of a through hole penetrating the housing 140 in the optical axis direction.

The housing 140 may include a plurality of side portions 141-1 to 141-4 and corner portions 142-1 to 142-4.

For example, the housing 140 may include first to fourth side portions 141-1 to 141-4 and first to fourth corner portions 142-1 to 142-4 spaced apart from each other. have.

Each of the corner portions 142-1 to 142-4 of the housing 140 has two adjacent side portions 141-1 and 141-2, 141-2 and 141-3, 141-3 and 141-4, and 141 It may be disposed or positioned between -4 and 141-1), and the side portions 141-1 to 141-4 may be connected to each other.

For example, the corner portions 142-1 to 142-4 may be located at a corner or corner of the housing 140. For example, the number of side portions of the housing 140 is four, and the number of corner portions is four, but is not limited thereto, and may be five or more.

Each of the side portions 141-1 to 141-4 of the housing 140 may be disposed in parallel with any one of the side plates 302 of the cover member 300.

For example, the side portions 141-1 to 141-4 of the housing 140 may correspond to the first side portions 110b1 to 110b4 of the bobbin 110, and the corner portions 142-1 to 142-1 of the housing 140 142-4 may correspond to or face the second side portions 110c1 to 110c4 of the bobbin 110.

A magnet 130 and a dummy member 135 may be disposed or installed at the corner portions 142-1 to 142-4 of the housing 140.

For example, at the corners or corner portions 142-1 to 142-4 of the housing 140, a seating portion 141a for accommodating the magnet 130, and a seating portion 141a1 for accommodating the dummy member 135 ) May be provided.

The seating portions 141a and 141a1 of the housing 140 may be provided under or at the bottom of at least one of the corner portions 142-1 to 142-4 of the housing 140.

For example, the seating portion 141a of the housing 140 may be provided below or below each of the three corner portions 142-1 to 142-3 of the housing 140, and the seating portion ( 141a1 may be provided below or below one corner portion 142-4 of the housing 140.

The mounting portion 141a of the housing 140 may be formed as a groove having a shape corresponding to the magnet 130, for example, a groove, but is not limited thereto. In addition, the seating portion 141a1 of the housing 140 may be formed as a groove having a shape with the dummy member 135, for example, a groove, but is not limited thereto.

For example, a first opening may be formed on the side of the seating portion 141a of the housing 140 corresponding to or opposite to the first coil 120, and the housing 140 corresponding or opposite to the second coil 230 A second opening may be formed on the lower surface of the seating portion 141a, which is to facilitate mounting of the magnet 130.

In addition, a first opening may be formed on the side of the mounting portion 141a1 of the housing 140 that corresponds or faces the first coil 120, and the housing 140 faces the upper surface of the circuit board 250 A second opening may be formed on the lower surface of the portion 141a1.

For example, the first surface 11a of the magnet 130 fixed or disposed on the seating portion 141a of the housing 140 may be exposed through the first opening of the seating portion 141a. In addition, the lower surface 11c of the magnet 130 fixed or disposed on the seating portion 141a of the housing 140 may be exposed through the second opening of the seating portion 141a.

In addition, for example, one side of the dummy member 135 fixed or disposed on the mounting portion 141a of the housing 140 may be exposed through the first opening of the mounting portion 141a1. In addition, the lower surface of the dummy member 135 fixed or disposed on the seating portion 141a1 of the housing 140 may be exposed through the second opening of the seating portion 141a1.

In another embodiment, the mounting portions 141a and 141a1 of the housing 140 may not have at least one of the first opening and the second opening.

The housing 140 may include an escape groove 41 provided on the upper surface of the housing 140 in order to avoid spatial interference with the first frame connection portion 153 of the upper elastic member 150. For example, the escape groove 41 may be formed on the upper surfaces of the corner portions 142-1 to 142-4 of the housing 140, but is not limited thereto, and in another embodiment, the upper surfaces of the side portions of the housing 140 It may be formed in.

For example, the evacuation groove 41 of the housing 140 may be in a form recessed from the upper surface of the housing 140, and the center of the housing 140 than the stopper 145 or the adhesive injection hole 147 of the housing 140 May be located closer to For example, the escape groove 41 may be located in the center direction of the housing 140 with respect to the stopper 145 of the housing 140, and adhesive injection holes 146a and 146b are located on the outside opposite the stopper 145. Can be located.

A groove portion 25a may be provided in the corner portions 142-1 to 142-4 of the housing 140 to correspond to or face the protruding portion 115 of the bobbin 110. The groove portion 25a of the housing 140 may be positioned on the mounting portions 141a and 141a1 of the housing 140. For example, the groove portion 25a of the housing 140 may be formed on the bottom surface of the escape groove 41.

For example, the bottom surface of the groove portion 25a may be positioned lower than the bottom surface of the escape groove 41. In addition, the seating grooves 141a and 141a1 of the housing 140 are the bottom surface of the escape groove 41 and the groove portion 25a. It can be located lower than the bottom surface of.

The magnet 130 may be fixed or attached to the seating portion 141a by an adhesive, and the dummy member 135 may be fixed or attached to the seating portion 141a1 by an adhesive, but is not limited thereto.

For example, at least one adhesive injection hole 146a and 146b for injecting an adhesive may be provided in the corner portions 142-1 to 142-4 of the housing 140. At least one of the adhesive injection holes 146a and 146b may be recessed from the upper surfaces of the corner portions 142-1 to 142-4.

At least one of the adhesive injection holes 146a and 146b may include a through hole penetrating the corner portions 142-1 to 142-4, and the adhesive injection holes 146a and 146b are seating grooves of the housing 140 It may be connected or communicated with (141a, 141a1).

The adhesive injection holes 146a and 146b are at least a portion of the magnet 130 (eg, at least a portion of the upper surface of the magnet 130), and at least a portion of the dummy member 135 (eg, at least a portion of the upper surface of the dummy member 135). Some) can be exposed.

The adhesive injection holes 146a and 146b expose at least a portion of the magnet 130 and at least a portion of the derby member 135, so that the adhesive can be well applied to the magnet 130 and the dummy member 135, thereby Accordingly, the fixing force between the magnet 130 and the housing 140 and the fixing force between the dummy member 135 and the housing 140 may be improved.

In order to prevent the lower surface of the housing 140 from colliding with the base 210 and/or the circuit board 250, the housing 140 may further include a stopper (not shown) protruding from the lower surface.

Support members 220-1 to 220-4 may be disposed at the corner portions 142-1 to 142-4 of the housing 140.

Holes 147 forming a path through which the support members 220-1 to 220-4 pass may be provided in the corner portions 142-1 to 142-4 of the housing 140. For example, the housing 140 may include a hole 147 penetrating the upper portions of the corner portions 142-1 to 142-4.

In another embodiment, the holes provided in the corner portions 142-1 to 142-4 of the housing 140 may have a structure that is recessed from the outer surface of the corner portion of the housing 140, and at least a part of the hole is an outer surface of the corner portion It can also be opened. The number of holes 147 of the housing 140 may be the same as the number of support members.

One end of the support member 220 may pass through the hole 147 and be connected or bonded to the upper elastic member 150.

For example, in order to easily apply the damper, the diameter of the hole 147 may gradually increase from the upper surface to the lower surface of the housing 140, but is not limited thereto, and in other embodiments, the hole 147 has a diameter This may be constant.

Not only to form a path through which the support members 220-1 to 220-4 pass, but also corner portions 142-1 to 142-4 of the support members 220-1 to 220-4 and the housing 140 In order to avoid spatial interference therebetween, an escape groove 148a may be provided in the outer surface 148 of the corner portions 142-1 to 142-4. The escape groove 148a may be connected to the hole 147 of the housing 140 and may have a hemispherical or semi-elliptical shape, but is not limited thereto. The lower or lower end of the escape groove 148a may be connected to the lower surface of the housing 140.

For example, the diameter of the escape groove 148a may gradually decrease from the top to the bottom, but is not limited thereto.

In addition, in order to prevent the cover member 300 from directly colliding with the inner surface of the upper plate, a stopper 145 may be provided on the upper, upper, or upper surface of the housing 140.

For example, the stopper 145 may be disposed on at least one of the corner portions 142-1 to 142-4 of the housing 140, but is not limited thereto.

And in order to prevent the lower surface of the housing 140 from colliding with the base 210 and/or the circuit board 250, a stopper (not shown) provided at the lower, lower, or lower surface of the housing 140 is further provided. You may.

In addition, a guide protrusion 144 may be provided at the corners of the upper surface of the corner portions 142-1 to 142-4 of the housing 140 to prevent overflow of the damper.

For example, the hole 147 of the housing 140 may be located between the corners (eg, the guide protrusion 144) and the stopper 145 of the upper surface of the corner portions 142-1 to 142-4 of the housing 140. I can.

At least one first coupling portion 143 coupled to the first outer frame 152 of the upper elastic member 150 may be provided on the upper, upper, or upper surface of the housing 140.

The first coupling portion 143 of the housing 140 may be disposed on at least one of the side portions 141-1 to 141-4 or the corner portions 142-1 to 142-4 of the housing 140.

A second coupling portion 149 coupled to and fixed to the second outer frame 162 of the lower elastic member 160 may be provided at the lower, lower, or lower surface of the housing 140.

For example, each of the first and second coupling portions 143 and 149 of the housing 140 may have a protrusion shape, but is not limited thereto, and may have a groove or a flat shape in another embodiment.

For example, by using an adhesive member or thermal fusion bonding, the first coupling portion 143 of the housing 140 and the hole 152a of the first outer frame 152 of the upper elastic member 150 may be coupled, and the housing The second coupling portion 149 of 140 and the hole 162a of the second outer frame 162 of the lower elastic member 160 may be coupled.

Side portions 141-1 of the housing 140 to avoid spatial interference with a portion where the second outer frames 162-1 to 162-3 of the lower elastic member 160 and the second frame connection 163 meet. An escape groove 44a may be provided on at least one of the lower surfaces.

4A and 4B, in order to avoid spatial interference with the protrusion 116 of the bobbin 110, the housing 140 may have a groove 141b or an opening corresponding to or opposite to the protrusion 116.

For example, the groove 141b may be formed in the fourth corner portion 142-4 of the housing 140, and may be opened to the upper and lower surfaces of the fourth corner portion 142-4 of the housing 140, and , It may be opened to the inner side of the fourth corner portion 142-4 of the housing 140.

For example, the groove 141b may communicate with or be connected to the seating groove 141a1 of the housing 140.

The protrusion 116 of the bobbin 110 may be disposed or inserted into the groove 141b of the housing 140. For example, the sensing magnet 180 may be disposed in the groove 141b of the housing 140 and the seating groove 141a of the housing 140.

In addition, for example, at least a portion of the upper or upper portion of the sensing magnet 180 may be exposed from the upper surface of the housing 140 by the groove 141b, and at least a portion of the lower or lower end of the sensing magnet 180 may be a seating groove ( It may be exposed from the lower surface of the housing 140 by 141a). This is to improve the sensitivity of the first position sensor 170 that senses the strength of the magnetic field of the sensing magnet 180.

In another embodiment, the upper or lower portion of the sensing magnet 180 may not be exposed to the upper or lower surface of the housing 140.

Referring to FIG. 4C, the magnet 130 and the dummy member 135 may protrude downward from the lower surface of the housing 140, but are not limited thereto. In another embodiment, the magnet 130 and the dummy member 135 135) may not protrude downward from the lower surface of the housing 140. For example, the downward direction may be a direction from an upper surface to a lower surface of the housing 140.

Next, the magnet 130 and the dummy member 135 will be described.

The magnet 130 may include three magnet units 130-1 to 130-3 disposed at three corners (or corner portions 142-1 to 142-3) of the housing 140.

For example, the housing 140 may include an upper plate and a side plate, and the magnet 130 may be disposed on a side plate of the housing 140.

For example, the magnet 130 may include a first magnet unit 130-1, a second magnet unit 130-2, and a third magnet unit 130-3 that are spaced apart from each other and disposed in the housing 140. I can.

For example, each of the first to third magnet units 130-1 to 130-3 may be disposed between the bobbin 110 and the housing 140.

For example, the first magnet unit 130-1, the second magnet unit 130-2, and the third magnet unit 130-3 are three corner portions 1142-1 to 142-3 of the housing 140. ) Can be placed.

For example, the first magnet unit 130-1 and the second magnet unit 130-2 may be disposed on any two corner portions 142-1 and 142-2 located opposite to each other of the housing 140. have.

In addition, the third magnet unit 130-3 may be disposed in any one (eg, 142-3) of the other two corner portions 142-3 and 142-4 located opposite to each other of the housing 140. In addition, the dummy member 135 may be disposed on the other one (eg, 142-4) of the other two corner portions 142-3 and 142-4.

In the embodiment of FIG. 1, the first to third magnet units 130-1 to 130-3 and the dummy member 135 are disposed at the corners 142-1 to 142-4 in the housing 140. I can. The corner portion 142-4 of the housing 140 may provide a sufficient space in which the dummy member 135 and the protrusion 116 of the bobbin 110 on which the sensing magnet 180 is mounted may be disposed.

In another embodiment, each of the first to third magnet units may be disposed on a corresponding one of the three side portions 141-1 to 141-3 of the housing 140, and the dummy member is the housing 140 It may be disposed on the other side (141-4).

Another embodiment may include a magnet installation member. The magnet installation member may be provided separately from the housing 140, but is not limited thereto, and may be integrally configured with the housing 140 in other embodiments.

For example, the magnet installation member may be in the form of a frame, the frame may be coupled to the housing 140, and the magnet 130 may be installed or coupled to the frame.

At the initial position of the AF movable part, the magnet 130 is perpendicular to the optical axis OA and is disposed in the housing 140 so that at least a portion of the first coil 120 overlaps in a direction parallel to a straight line passing through the optical axis OA. I can.

Each of the first to third magnet units 130-1 to 130-3 may have a polyhedral shape that is easily seated in the corner portions 142-1 to 142-3 of the housing 140. In another embodiment, each of the first to third magnet units may have a polyhedral shape that is easily seated on the side of the housing 140.

Each of the first to third magnet units 130-1 to 130-3 is a first surface 11a corresponding or opposite to one surface of the first coil 120 (or the outer surface of the bobbin 110) , And a second surface 11b positioned on the opposite side of the first surface 11a.

For example, an area of the first surface 11a of each of the first to third magnet units 130-1 to 130-3 may be larger than the area of the second surface 11b. Alternatively, for example, the length in the horizontal direction of the second surface 11b of each of the first to third magnet units 130-1 to 130-3 may be smaller than the length in the horizontal direction of the first surface 11a.

For example, each of the first to third magnet units 130-1 to 130-3 may include a portion whose length in the horizontal direction decreases from the first surface 11a to the second surface 11b. For example, the length in the horizontal direction may be a length in a direction parallel to the first surface 11a of the magnet 130.

Each of the first to third magnet units 130-1 to 130-3 may be configured as one body, and the first to third magnet units 130-1 to 130 facing the first coil 120 -3) Each of the first surface 11a may be disposed so that the S pole and the second surface 11b may be the N pole. However, this is not limited thereto, and in other embodiments, each of the first to third magnet units 130-1 to 130-3 has an N pole in the first surface 11a and an S pole in the second surface 11b. It may be arranged as possible.

For example, a planar shape of each of the first to third magnet units 130-1 to 130-3 in a horizontal direction may be a polygon such as a triangle, a pentagon, a hexagon, a rhombus, or a trapezoid.

Each of the first to third magnet units 130-1 to 130-3 may be a single-pole magnetized magnet, but is not limited thereto. In another embodiment, each of the first to third magnet units 130-1 to 130-3 may be an anode magnetized magnet or a four-pole magnet including two N poles and two S poles.

8A to 8C, the sensing magnet 180 may not overlap the first coil 120 in the optical axis OA direction, but is not limited thereto. In another embodiment, the sensing magnet may overlap the first coil in the optical axis direction.

At the initial position of the AF movable part, the magnet 130 and the first coil 120 may overlap in a direction perpendicular to the optical axis OA or in a direction perpendicular to the optical axis OA and parallel to a straight line passing through the optical axis OA. have.

In addition, at the initial position of the AF movable part, the first position sensor 170 is in a direction perpendicular to the optical axis OA, or in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis, the sensing magnet 180 and the magnet 130 May not overlap.

The dummy member 135 may be disposed in the housing 140 to correspond or face the third magnet unit 130-3. The dummy member 135 may be represented by replacing a "weight balancing member", a "balancing member", a "weight compensating member", or a "weight member".

The dummy member 135 may be a material that is not affected by a magnet, may be made of a non-magnetic material, or may be a non-magnetic material, but is not limited thereto. In another embodiment, the dummy member 135 may be a magnetic material or may include a magnetic material.

The dummy member 135 is for balancing the weight of the three magnet units 130-1 to 130-4 disposed in the housing 140.

For example, the dummy member 135 may have the same mass as the third magnet unit 130-3, but is not limited thereto, and in another embodiment, within a range that does not cause an error in OIS operation due to weight imbalance. The weight of the dummy member 135 may have an error with the weight of the third magnet unit 130-3.

13 is a graph showing a frequency response characteristic of a relationship between a driving signal of the second coil 230 of the lens driving apparatus 100 and an output of the second position sensor 240. g1 is a frequency response characteristic with respect to gain, and g2 is a frequency response characteristic with respect to phase.

Referring to FIG. 13, a first peak of gain peak1 is shown at a first resonant frequency f1, and a second peak peak2 of gain is shown at a second resonant frequency f2. The dummy member 135 In the absence of ), the second peak (peak2) increases and the gain margin decreases, thereby increasing the possibility of oscillation. The embodiment can prevent oscillation by the dummy member 135.

For example, the dummy member 135 is the fourth of the housing 140 located opposite the third corner portion 142-3 of the housing 140 in which the third magnet unit 130-3 is disposed for weight balance. It may be disposed in the corner portion (142-4).

At the initial position of the AF movable part, the dummy member 135 may overlap the first coil 120 in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis, but is not limited thereto, and in other embodiments, both are It may not overlap.

The dummy member 135 is perpendicular to the optical axis and overlaps with the third magnet unit 130-3 in a direction from the third corner part 142-3 of the housing 140 toward the fourth corner part 142-4. I can.

For example, the dummy member 135 may not overlap with the sensing magnet 180 in the optical axis direction.

The dummy member 135 may not overlap with the second coil 230 in the optical axis direction. For example, since a coil unit may not be formed in a region corresponding to the dummy member 135 in the optical axis direction, spatial interference may not occur between the dummy member 135 and the second coil 230, and thereby The dummy member 135 may be designed to increase the length and weight of the member 135 in the optical axis direction.

As the dummy member 135 is designed to increase the length and weight in the optical axis direction, it is possible to design the dummy member 135 to shorten the length in the direction perpendicular to the optical axis, whereby the dummy member 135 and the The spatial distance between the sensing magnets 180 may be increased, and collisions between the two may be prevented to prevent damage or breakage of the sensing magnet 180 due to an impact.

When the dummy member 135 includes a magnetic material, the magnetic intensity of the dummy member 135 may be less than that of the third magnet unit 130-3.

For example, the dummy member 135 may include tungsten, and the tungsten may occupy 95% or more of the total weight, but is not limited thereto. For example, the dummy member 135 may be a tungsten alloy.

The dummy member 135 may have a polyhedral shape, for example, a rectangular parallelepiped shape, but is not limited thereto and may be formed in various shapes. For example, the dummy member 135 may include a rounded portion or a curved surface at a side edge.

The dummy member 135 may include a groove 135a capable of avoiding spatial interference with the sensing magnet 180. For example, the sensing magnet 180 may be disposed in the groove 135a of the dummy member 135.

For example, the dummy member 135 is located on the opposite side of the first surface 12a and the first surface 12a corresponding or opposite to one surface of the first coil 120 (or the outer surface of the bobbin 110) It may include a second surface (12b). In addition, the dummy member 135 may include a lower surface 12c and an upper surface 12d. For example, the lower surface 12c may connect the lower part of the first surface 12a and the lower part of the second surface 12b of the dummy member 135, and the upper surface 12d may be formed between the upper part and the first surface 12a. The upper part of the two sides 12b can be connected.

For example, the dummy member 135 may include a portion whose length in the horizontal direction decreases from the first surface 12a to the second surface 12b. For example, the length in the horizontal direction of the dummy member 135 may be a length in a direction parallel to the first surface 12a of the dummy member 135.

For example, the groove 135a may be formed on the first surface 12a of the dummy member 135 and may have a structure recessed from the first surface 12a.

Also, for example, the groove 135a may include a first opening that opens to the lower surface 12c of the dummy member 135. In addition, the groove 135a may include a second opening that opens to the upper surface 12d of the dummy member 135.

At least a part of the sensing magnet 180 may be disposed in the groove 135a of the dummy member 135. In addition, at least a part of the protrusion 116 of the bobbin 110 may be disposed in the groove 135a of the dummy member 135.

Next, the upper elastic member 150, the lower elastic member 160, and the support member 220 will be described.

5A, the upper elastic member 150 may be coupled to the upper, upper, or upper surface of the bobbin 110, and the lower elastic member 160 is coupled to the lower, lower, or lower surface of the bobbin 110. Can be.

For example, the upper elastic member 150 may be coupled to the upper, upper, or upper surface of the bobbin 110 and the upper, upper, or upper surface of the housing 140, and the lower elastic member 160 is The lower, lower, or lower surface and the lower, lower, or lower surface of the housing 140 may be combined.

The upper elastic member 150 and the lower elastic member 160 may elastically support the bobbin 110 with respect to the housing 140.

The support member 220 may support the housing 140 to be movable in a direction perpendicular to the optical axis with respect to the fixing part.

For example, the fixing unit may include at least one of the second coil 230, the circuit board 250, and the base 210. The fixed portion may be a non-moving or fixed portion as compared to the AF moving portion and the OIS moving portion.

The support member 220 may electrically connect at least one of the upper or lower elastic members 150 and 160 to the circuit board 250.

Referring to FIG. 5A, the upper elastic member 150 may include a plurality of upper elastic units 150-1 and 150-2 electrically separated from each other. In FIG. 5A, two electrically separated upper elastic units are shown, but the number is not limited thereto and may be three or more. Alternatively, in another embodiment, the upper elastic member 150 may be implemented as a single elastic unit integrally formed.

For example, the upper elastic member 150 may include first and second upper elastic units 150-1 and 150-2.

Each of the first and second upper elastic units 150-1 and 150-2 may include a first outer frame 152 coupled to the housing 140.

For example, at least one of the first and second upper elastic units 150-1 and 150-2 is the first inner frame 151 coupled to the bobbin 110, and the first inner frame 151 and the first A first frame connection part 153 connecting the outer frame 152 may be further included.

For example, a hole 151a for coupling with the first coupling part 113 of the bobbin 110 may be provided in the first inner frame 151 of the upper elastic unit 150, but is not limited thereto. For example, the hole 152a of the first inner frame 151 may have at least one cutout through which an adhesive member penetrates between the first coupling portion 113 of the bobbin 110 and the hole 151a.

The first outer frame 152 of the upper elastic unit 150 may be provided with a hole 152a for coupling with the first coupling portion 143 of the housing 140.

The first outer frame 151 of each of the first and second upper elastic units 150-1 and 150-2 is coupled to the first coupling portion 510 and the support member 220 coupled to the housing 140. It may include a second coupling portion 520 and a connection portion 530 connecting the first coupling portion 510 and the second coupling portion 520.

The first coupling part 510 may include at least one coupling region (for example, 5a, 5b) coupled to the housing 140 (for example, the corner parts 142-1 to 142-4).

For example, the coupling region (eg, 5a, 5b) of the first coupling portion 510 may include at least one hole 152a that is coupled to the first coupling portion 143 of the housing 140.

For example, each of the coupling regions 5a and 5b may have one or more holes, and one or more first coupling portions are provided corresponding to the corner portions 142-1 to 142-4 of the housing 140 Can be. In the embodiment of FIG. 5A, each of the coupling regions 5a and 5b of the first coupling portion 510 is implemented to include a hole 152a, but is not limited thereto, and in another embodiment, the coupling regions are the housing 140 ) May be implemented in various forms sufficient to be combined with, for example, a groove form.

The second coupling part 520 may include a hole 52 through which the support member 220 passes. One end of the support member 220 passing through the hole 52 may be directly coupled to the second coupling portion 520 by a conductive adhesive member or solder 901 (see FIG. 6), and the second coupling portion 520 And the support member 220 may be electrically connected.

For example, the second coupling part 520 is a region in which the solder 901 is disposed for coupling with the support member 220 and may include a hole 52 and a region around the hole 52.

For example, the first upper elastic unit 150-1 includes two first coupling portions disposed at two corner portions 142-2 and 142-4 of the housing 140 and two first coupling portions corresponding thereto. can do.

Also, for example, the second upper elastic unit 150-20 includes two first coupling portions disposed on the other two corner portions 142-1 and 142-3 of the housing 140 and two first coupling portions corresponding thereto. It may contain parts.

The support member 200 may include first to fourth support members 220-1 to 220-4.

One end of each of the first to fourth support members 220-1 to 220-4 by solder 901 or a conductive adhesive member is formed of the first and second upper elastic units 150-1 and 150-2. It may be coupled to a corresponding one of the second coupling portions.

The connection part 530 may connect the first coupling part 510 and the second coupling part 520 to each other.

For example, the connection portion 530 may connect the second coupling portion 520 and the coupling regions 5a and 5b of the first coupling portion 510.

For example, the connection part 530 includes a first connection part 530a that connects the first coupling region 5a and the second coupling part 520 of the first coupling part 510 of the upper elastic member 150, and a first A second connection portion 530b connecting the second coupling region 5b of the coupling portion 510 and the second coupling portion 520 may be included.

Each of the first and second connecting portions 530a and 530b may include a bent portion that is bent at least once or a curved portion that is bent at least once, but is not limited thereto, and may be a straight line in other embodiments.

For example, the first coupling portion 510 may contact the upper surface of the corner portions 142-1 to 142-4 of the housing 140, and the corner portions 142-1 to 142-4 of the housing 140 Can be supported by For example, the connection part 530 is not supported by the upper surface of the housing 140 and may be spaced apart from the housing 140.

In addition, in order to prevent oscillation due to vibration, a damper (not shown) may be filled in the empty space between the connection part 530 and the housing 140.

Referring to FIG. 5B, the lower elastic member 160 may be implemented as an integrally formed elastic unit, but is not limited thereto, and in another embodiment, a plurality of elastic units separated from each other may be included.

For example, the lower elastic member 160 is a second inner frame 161 that is coupled or fixed to the lower, lower, or lower end of the bobbin 110, the lower, lower, or lower portion of the housing 140. 2 It may include an outer frame 162 and a second frame connector 163 connecting the second inner frame 161 and the second outer frames 162-1 to 162-3 to each other.

The second inner frame 161 may be provided with a hole 161a for coupling with the second coupling portion 117 of the bobbin 110, and the second outer frame 162 is provided with a second coupling of the housing 140 A hole 162a to be coupled to the portion 149 may be provided.

In addition, for example, the second inner frame 161 may include a plurality of inner portions and an inner frame connecting portion connecting them, and the second outer frame 161 is a plurality of outer portions, and an outer frame connecting portion 164 connecting them. ) Can be included.

The upper elastic member 150 and the lower elastic member 160 may be formed of a leaf spring, but are not limited thereto, and may be implemented as a coil spring.

The "elastic unit (eg, 150-1, 150-2)" expressed above may be represented by replacing it with "spring", and the "outer frame (eg, 152, or 162)" is represented by replacing it with "outer part" The “inner frame (eg, 151 or 161)” may be replaced by “inner part”, and the support member 220 may be represented by replacing “wire”.

Next, the support member 220 will be described.

The support member 220 may be disposed at a corner portion of the housing 140.

For example, the support member 200 may include a plurality of support members 220-1 to 220-4.

Each of the plurality of support members 220-1 to 220-4 may be disposed in a corresponding one of the corner portions 142-1 to 142-4 of the housing 140, and the upper elastic units 150- 1, 150-2) and the circuit board 250 may be connected to each other.

In FIG. 2, one support member is disposed at one corner of the housing 140, but is not limited thereto. In another embodiment, two or more support members may be disposed at one corner of the housing 140. have.

For example, the two support members 220-1 and 220-3 may be coupled to the first upper elastic unit 150-1, and the two support members 220-2 and 220-4 are It may be combined with the upper elastic unit 150-2.

Each of the support members 220-1 to 220-4 may be coupled to a corresponding one of the second coupling portions of the upper elastic member 150.

Also, for example, the support members 220-1 to 220-4 may electrically connect the first and second upper elastic members 150-1 and 150-2 to terminals of the circuit board 250.

The support members 220-1 to 220-4 may be spaced apart from the housing 140 and are not fixed to the housing 140, but one end of the support members 220-1 to 220-4 is a second It may be directly connected or coupled to the coupling portion 520. In addition, the other ends of the support members 220-1 to 220-4 may be directly connected or coupled to the circuit board 250.

For example, the support member 220 may pass through the holes 147 provided in the corner portions 142-1 to 142-4 of the housing 140, but is not limited thereto. In another embodiment, the support member may be disposed adjacent to the boundary line between the side portions 141-1 to 141-4 and the corner portions 142-1 to 142-4 of the housing 140, or the corner of the housing 140 It may not pass through the parts 142-1 to 142-4.

One end of the first coil 120 may be connected to the first upper elastic unit 150-1, and the other end of the first coil 120 may be connected to the second upper elastic unit 150-2.

Any one support member (eg, 220-1) connected to the first upper elastic unit 150-1 and any one support member (eg, 220-3) connected to the second upper elastic unit 150-2 Accordingly, the first coil 120 may be electrically connected to the two terminals 251 of the circuit board 250.

For example, one end of the first coil 120 may be directly connected or coupled to the first inner frame of the first upper elastic unit 150-1, and the other end of the first coil 120 is a second upper elastic unit ( 150-2) may be directly connected or coupled to the first inner frame.

In order for the magnet 130 to be spaced apart from the second coil 230 and the circuit board 250, the other end of the support member 220 is lower than the lower surface 11c of the magnet 130 and the circuit board 250 (or It may be coupled to the circuit member 231 and the base 210.

The support member 220 is conductive and may be implemented as a member that can be supported by elasticity, for example, a suspension wire, a leaf spring, or a coil spring. In addition, in another embodiment, the support member 220 may be integrally formed with the upper elastic member 150.

In order to absorb and buffer the vibration of the bobbin 110, the lens driving device 100 is disposed between each of the upper elastic units 150-1 and 150-2 and the bobbin 110 (or the housing 140). A first damper (not shown) may be further provided.

For example, a first damper (not shown) may be disposed in a space between the first frame connection part 153 and the bobbin 110 of each of the upper elastic units 150-1 and 150-2.

In addition, for example, the lens driving device 100 may further include a second damper (not shown) disposed between the second frame connection portion 163 of the lower elastic member 160 and the bobbin 110 (or the housing 140). May be.

In addition, for example, the lens driving apparatus 100 may further include a third damper (not shown) disposed between the support member 220 and the hole 147 of the housing 140.

In addition, for example, the lens driving device 100 may further include a second coupling portion 520 and a fourth damper (not shown) disposed at one end of the support member 220, and the other end of the support member 220 A fifth damper (not shown) disposed on the circuit board 250 may be further included.

In addition, for example, a damper (not shown) may be further disposed between the inner surface of the housing 140 and the outer peripheral surface of the bobbin 110.

Next, the base 210, the circuit board 250, and the second coil 230 will be described.

Referring to FIG. 7, the base 210 is disposed under the bobbin 110 (or/or the housing 140 ).

The base 210 may have an opening or a hollow corresponding to the opening of the bobbin 110 or/and the opening of the housing 140, and may have a shape that matches or corresponds to the cover member 300, for example, a square shape. I can. For example, the opening of the base 210 may be in the form of a through hole penetrating the base 210 in the optical axis direction.

The base 210 may include a step 211 to which an adhesive may be applied when adhesively fixing the cover member 300. For example, the step 211 may be formed on the outer surface of the base 210. At this time, the stepped 211 may guide the side plate of the cover member 300 coupled to the upper side, and the lower end of the side plate of the cover member 300 may be in contact with the stepped 211. The step 211 of the base 210 and the lower end of the side plate of the cover member 300 may be adhered or fixed by an adhesive or the like.

A support part 255 or a support part may be provided in an area of the base 210 of the circuit board 250 facing the terminal surface 253 on which the terminals 251 are provided. The support part 255 of the base 210 may support the terminal surface 253 of the circuit board 250.

The base 210 may have a groove 212 in a corner region to avoid spatial interference with the other end of the support members 220-1 to 220-4 coupled to the circuit board 250. The recess 212 may be formed to correspond to the edge of the cover member 300.

In addition, a protrusion 19 for engaging the opening of the circuit board 250 and the opening of the circuit member 231 may be provided on the upper surface of the base 210 around the opening of the base 210.

A seating portion (not shown) on which the filter 610 of the camera module 200 is installed may be formed on the lower surface of the base 210.

At least one coupling protrusion 29b for coupling with the coupling groove 29a of the circuit board 250 may be formed on the upper surface of the base 210.

At least one coupling protrusion 29b of the base 210 may be formed on the upper surface of the base 210 or/and may be formed on the protrusion 19 of the base 210.

The base 210 is a first mounting groove (215-1) for placing, seating, or receiving the first position sensor 170, the first sensor 240a of the second position sensor 240 is arranged, seated or A second seating groove 215-2 for receiving, and a third seating groove 215-3 for arranging, seating or receiving the second sensor 240b of the second position sensor 240 may be included. .

The first to third seating grooves 215-1 to 215-3 may be recessed from the upper surface of the base 210.

The second coil 230 may be disposed on the circuit board 250, and the first position sensor 170 and the second position sensor 240 may be disposed under the circuit board 250.

For example, the second coil 230 may be disposed on the upper surface of the circuit board 250, and the first position sensor 170 and the second position sensor 240 are disposed and mounted on the lower surface of the circuit board 250 , Or can be combined.

The second coil 230 may be disposed under the housing 140 and the bobbin 110.

The second coil 230 may include a plurality of coil units 230-1 to 230-3.

Each of the first to third coil units 230-1 to 230-3 is connected to any one of the first to third magnet units 130-1 to 130-3 disposed in the housing 140 in the optical axis direction. They may be disposed on top of the circuit board 250 to correspond, oppose, or overlap.

Each of the first to third coil units 230-1 to 230-3 may have a closed curve having a central hole, for example, a ring shape, and the central hole may be formed to face the optical axis direction.

Each of the first to third coil units 230-1 to 230-4 may be in the form of a coil block formed of a fine pattern (FP) coil, but is not limited thereto.

In another embodiment, the second coil may include a circuit member and a plurality of coil units formed on the circuit member. Here, the circuit member may be expressed as a "substrate", a "circuit board", or a "coil board".

In an embodiment in which the first to third coil units are formed in the circuit member, the circuit member may include four corner regions, and each of the first to third coil units corresponds to one of the three corner regions of the circuit member. It may be formed in any one, and the coil unit may not be formed in the other corner area of the circuit member.

For example, the first coil unit 230-1 and the second coil unit 230-2 may be disposed on two corner regions of the circuit board 250 opposite to each other, and the third coil unit ( 230-3) may be disposed on any one of the other two corner regions located opposite to each other of the circuit board 250.

In another embodiment, the first to third coil units may not be implemented in the form of separate circuit members or FP coils, but may be implemented in the form of circuit patterns or wires formed on the circuit board 250.

The circuit board 250 is disposed on the upper surface of the base 210 and may have an opening corresponding to an opening of the bobbin 110, an opening of the housing 140, or/and an opening of the base 210. The opening of the circuit board 250 may be in the form of a through hole. The shape of the circuit board 250 may be a shape that matches or corresponds to the upper surface of the base 210, for example, a square shape.

The circuit board 250 may be bent from an upper surface and may include a plurality of terminals 251 receiving electrical signals from the outside, or at least one terminal surface 253 on which pins are provided. For example, the circuit board 250 may include two terminal surfaces disposed on two sides facing each other among the sides of the upper surface, but is not limited thereto.

The circuit board 250 may be provided as a flexible printed circuit board (FPCB), but is not limited thereto. In another embodiment, the terminals of the circuit board 250 may be directly formed on the surface of the base 210 by using a surface electrode method or the like.

The circuit board 250 may include a hole 250a through which the support members 220-1 to 220-4 pass in order to avoid spatial interference with the support members 220-1 to 220-4. In another embodiment, the circuit board 250 may have escape grooves at the corners instead of the holes 250a.

For example, the support members 220-1 to 220-4 may pass through the hole 250a of the circuit board 250 and be electrically connected through a circuit pattern disposed on the lower surface of the circuit board 250 and solder, etc. , But is not limited thereto.

In another embodiment, the circuit board 250 may not have a hole, and the support members 220-1 to 220-4 may be formed on a circuit pattern or pad formed on the upper surface of the circuit board 250 through solder, etc. It can also be electrically connected.

Alternatively, in an embodiment in which the second coil is formed on the circuit member, the support members may be electrically connected to the circuit member, and the circuit member may electrically connect the support members to the circuit board 250.

For example, the two coil units 230-1 to 230-3 may be disposed on corners or corner regions of the circuit board 250 having a polygonal shape (eg, a quadrangle).

For example, the second coil 230 is one of two coil units 230-1 and 230-2 for a second direction (eg, in the X-axis direction) and one for a third direction (eg, in the Y-axis direction). The number of coil units 230-3 may be included, but the present invention is not limited thereto.

For example, the second direction coil units 230-1 and 230-2 may be disposed on any two corner regions of the circuit board 250 that face each other in the first diagonal direction of the circuit board 250. In addition, the third direction coil unit 230-3 may be disposed in any one of two other corner regions of the circuit board 250 facing each other in the second diagonal direction of the circuit board 250. The first diagonal direction and the second diagonal direction may be perpendicular to each other.

The second coil 230 may be electrically connected to the circuit board 250, and power or a driving signal may be provided through the circuit board 250. The power or driving signal provided to the second coil 230 may be a DC signal or an AC signal, or may include a DC signal and an AC signal, and may be in the form of current or voltage.

Referring to FIG. 7, the circuit board 250 may include pads P1 to P6 to be electrically connected to the first to third coil units 230-1 to 230-3. Here, the pads P1 to P6 may be represented by replacing "terminals" or "bonding parts".

For example, one end of the first coil unit 230-1 may be connected to the first pad P1, and the other end of the first coil unit 230-1 may be connected to the second pad P2.

One end of the second coil unit 230-2 may be connected to the third pad P3, and the other end of the second coil unit 230-2 may be connected to the fourth pad P4. And any one of the first and second pads (for example, P2) and one of the third and fourth pads P3 and P4 (for example, P4) are formed by the first circuit pattern (or first wiring). Can be connected to each other. The two coil units 230-1 and 230-2 for the second direction may be connected in series with each other. And the other one of the first and second pads (eg, P1) and the other of the third and fourth pads P3 and P4 (eg, P3) is a second circuit pattern (or second wiring) The first and second terminals of the circuit board 250 may be electrically connected through. In addition, a first driving signal may be provided to the first and second coil units 230-1 and 230-2 through the first and second terminals of the circuit board 250.

Also, for example, one end of the third coil unit 230-3 may be connected to the fifth pad P5, and the other end of the third coil unit 230-3 may be connected to the sixth pad P6. The fifth and sixth pads P5 and P6 may be electrically connected to the third and fourth terminals of the circuit board 250 through a third circuit pattern (or third wiring). A second driving signal may be provided to the third coil unit 230-3 through the third and fourth terminals of the circuit board 250.

The first to third circuit patterns (or wirings) may be formed in the circuit board 250.

OIS by the interaction between the first to third magnet units (130-1 to 130-3) and the first to third coil units (230-1 to 230-3) provided with the first and second driving signals The movable part (eg, the housing 140) may move in the second and/or third direction, eg, in the x-axis and/or y-axis direction, and thus, camera shake correction may be performed.

The first and second sensors 240a and 240b of the first position sensor 170 and the second position sensor 240 may be disposed between the circuit board 250 and the base 210. For example, the first position sensor 170 and the first and second sensors 240a and 240b may be disposed or mounted on the lower surface of the circuit board 250.

In another embodiment, at least one of the first position sensor 170 and the first and second sensors 240a and 240b may be disposed on the upper surface of the circuit board 250.

Each of the first position sensor 170 and the first and second sensors 240a and 240b may be electrically connected to the circuit board 250. For example, the first position sensor 170 and each of the first and second sensors 240a and 240b may be electrically connected to terminals of the circuit board 250.

The first position sensor 170 may be an "AF position sensor", and the second position sensor 240 may be an OIS position sensor. The second position sensor 240 includes a first sensor 240a and a second position sensor. It may include a sensor (240b).

The AF movable unit (eg, the bobbin 110 and the sensing magnet 9180) may be moved in the optical axis direction by electromagnetic force due to the interaction between the first coil 120 and the magnet 130, and the first position sensor 170 May detect the strength or magnetic force of the magnetic field of the sensing magnet 180 moving in the direction of the optical axis, and may output an output signal according to the detected result.

For example, according to the displacement of the bobbin 110 in the optical axis direction, the strength or magnetic force of the magnetic field sensed by the first position sensor 170 may be changed, and the first position sensor 170 is proportional to the strength of the sensed magnetic field. An output signal of the first position sensor 170 may be output, and a displacement of the bobbin 110 in the optical axis direction may be sensed using the output signal of the first position sensor 170.

The OIS movable part (eg, the housing 140 and the magnet 130) may be moved in a direction perpendicular to the optical axis by the electromagnetic force caused by the interaction between the second coil 230 and the magnet 130, and the first and second 2 Each of the sensors 240a and 240b may detect the strength of the magnetic field of the magnet 130 that is moved in a direction perpendicular to the optical axis, and may output an output signal according to the detected result.

A displacement of the OIS movable part in a direction perpendicular to the optical axis, for example, a shift or a tilt of the OIS movable part, may be sensed by using the output signals of the first and second sensors 240a and 240b. Here, the OIS movable unit may include an AF movable unit and components mounted on the housing 140.

For example, the OIS movable unit may include an AF movable unit and a housing 140 and a magnet 130.

At least one of the first position sensor 170 and the first and second sensors 240a and 240b may be implemented as a Hall sensor alone.

Alternatively, at least one of the first position sensor 170 and the first and second sensors 240a and 240b may be implemented in the form of a driver integrated circuit (IC) including a Hall sensor.

In an embodiment in which the Hall sensor is implemented alone, the Hall sensor 170, 240a, or 240b may include two input terminals and two output terminals. The two input terminals of the Hall sensor may be electrically connected to the two terminals of the circuit board 250, through which a driving signal may be provided. In addition, the two output terminals of the Hall sensor may be electrically connected to the other two terminals of the circuit board 250, through which the output signal of the Hall sensor may be output.

In an embodiment implemented in the form of a driver integrated circuit (IC) including a Hall sensor, a driving signal may be directly provided to the first coil 120 from the first position sensor 170. For example, the first position sensor 170 may be electrically connected to the first and second upper elastic members 150-1 and 150-2 through two support members (eg, 220-1 and 220-3). Alternatively, a driving signal may be provided directly to the first coil 120. In addition, a first driving signal may be directly provided to the first and second coil units 2301 and 230-2 from the first sensor 240a, and the third coil unit 230-3 may be supplied from the second sensor 240b. ) May be provided directly to the second driving signal.

For example, the first sensor 240a is electrically connected to two pads (eg, P2, P4) of the circuit board 250 electrically connected to the first and second coil units 2301 and 230-2 connected in series. The second sensor 240b may be connected, and the second sensor 240b may be electrically connected to the two pads P5 and P6 of the circuit board 250 electrically connected to the third coil unit 230-3.

In addition, in an embodiment implemented in the form of a driver IC (Integrated Circuit) including a Hall sensor, signals for data communication with the driver IC may be transmitted and received through the terminals 251 of the circuit board 250. Signals for data communication may include a clock signal, a data signal, and a power signal.

The cover member 300 includes a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member in an accommodation space formed together with the base 210. 160, the first position sensor 170, the sensing magnet 180, the support member 220, the second coil 230, the second position sensor 240, and the circuit board 250 may be accommodated.

The cover member 300 has an open lower portion and may be in a box shape including an upper plate 301 and side plates 302, and a lower portion of the cover member 300 may be coupled to an upper portion of the base 210. The shape of the upper plate 301 of the cover member 300 may be a polygon, for example, a square or an octagon.

The cover member 300 may have an opening in the upper plate that exposes a lens (not shown) coupled to the bobbin 110 to external light. The material of the cover member 300 may be a nonmagnetic material such as SUS to prevent sticking to the magnet 130, but a yoke that improves the electromagnetic force between the first coil 120 and the magnet 130 by forming a magnetic material It can also function as (yoke).

9 is a bottom view of the bobbin 110 in which the first coil 120 and the sensing magnet 180 are disposed, and the housing 140 in which the magnet 130 and the dummy member 135 are disposed, and FIG. 10 is 9 is a view showing the second coil 230, the first position sensor 170, and the first and second sensors 240a and 240b in the bottom view.

9 to 10, the first position sensor 170 at an initial position of the OIS movable part may overlap the sensing magnet 180 in the optical axis direction. The first position sensor 170 may not overlap with the dummy member 135 in the optical axis direction, but is not limited thereto. In another embodiment, at least a part of the first position sensor 170 may be a dummy member ( 135) and may overlap.

Here, the initial position of the OIS movable part may be the initial position of the OIS movable part supported by the support member 220 and the elastic members 150 and 160 in a state in which no driving signal is provided to the second coil 230. In addition, the initial position of the OIS movable part may be a position where the OIS movable part is placed when gravity acts from the bobbin 110 to the base 210, or vice versa, when the gravity acts from the base 210 to the bobbin 110. have.

Each of the first to third magnetic units 130-1 to 130-3 may overlap with any one of the first to third coil units 230-1 to 230-3 in the optical axis direction.

The first sensor 240a may overlap with the first magnet unit 130-1 in the optical axis direction, and the second sensor 240b may overlap with the third magnet unit 130-3 in the optical axis direction.

In addition, the first sensor 240a may not overlap with the first coil unit 230-1 in the optical axis direction, and the second sensor 240b may not overlap with the third coil unit 230-3 in the optical axis direction. However, the present invention is not limited thereto, and in another embodiment, at least a part of the first sensor (or the second sensor) may overlap the first coil unit (or the third coil unit) in the optical axis direction.

Also, for example, the second frame connection portion 163 of the lower elastic member 160 may overlap the first coil 120 in the optical axis direction.

In addition, the first cross-sectional area of the sensing magnet 180 in a direction perpendicular to the optical axis may be larger than the second cross-sectional area of the first position sensor 170 in a direction perpendicular to the optical axis, but is not limited thereto. The first cross-sectional area may be the same as the second cross-sectional area or may be larger than the second cross-sectional area.

11 shows the arrangement of first to third magnet units, a dummy member, and a sensing magnet, and FIG. 12 is a first to third magnet unit, a dummy member, a sensing magnet, a first position sensor, a first sensor, And the arrangement of the second sensor.

11 and 12, the groove 135a of the dummy member 135 may be formed on the first surface 12a of the dummy member 135. For example, the groove 135a may be formed in a central region of the first surface 12a of the dummy member 135. For example, the dummy member 135 may be symmetrical left and right based on the groove 135a.

The length D1 of the groove 135a in the horizontal direction may be larger than the length or diameter R1 of the sensing magnet 180 in the horizontal direction (D1>R1).

The length or diameter R1 of the sensing magnet 180 in the vertical direction may be smaller than the distance or length D4 from the first surface 12a to the second surface 12b of the dummy member 135 (R1< D4).

The length D2 in the vertical direction of the groove 135a may be smaller than the length D4 from the first surface 12a to the second surface 12b of the dummy member 135 (D2<D4). For example, D2 may be a distance from the first surface 12a of the dummy member 135 to the bottom surface of the groove 135a.

For example, in FIG. 11, the horizontal direction may be a direction parallel to the first surface 12a of the dummy member 135, and the vertical direction may be a direction perpendicular to the horizontal direction.

For example, in another embodiment, at least one of the first opening of the groove 135a opened to the lower surface 12c of the dummy member 135 and the second opening open to the upper surface 12d of the dummy member 135 will be omitted. May be.

For example, the length H of the sensing magnet 180 in the optical axis direction may be less than or equal to the length D3 of the dummy member 135 in the optical axis direction (H≦D3). Alternatively, for example, the length H of the sensing magnet 180 in the optical axis direction may be less than or equal to the length of the groove 135a of the dummy member 135 in the optical axis direction.

In another embodiment, the length H of the sensing magnet 180 in the optical axis direction is the length D3 of the dummy member 135 in the optical axis direction or/and in the optical axis direction of the groove 135a of the dummy member 135 May be larger than the length of

Alternatively, for example, in another embodiment, a part of the sensing magnet 180 may protrude downward from the lower surface 12c of the dummy member 135. Alternatively, another part of the sensing magnet 180 may protrude upward from the upper surface 12d of the dummy member 135.

Referring to FIG. 12, for example, the first position sensor 170 may be disposed under the sensing magnet 180, and the first sensor 240a may be disposed under the first magnet unit 130-1. , The second sensor 240b may be disposed under the third magnet unit 130-3.

14 is a view for explaining the relationship between the stroke range in the direction perpendicular to the optical axis of the OIS movable unit, the size of the sensing magnet 180, and the arrangement of the first position sensor 170. Reference numeral 310 may be a sensing element or sensing area 310 of the first position sensor 170 that senses the strength of the magnetic field of the sensing magnet 180. 320 may be a stroke range 320 of the OIS movable part. Reference numeral 330 may be an area in which the sensing magnet 180 is disposed. In FIG. 14, it is indicated as a square, but is not limited thereto, and may be displayed as a circle, a polygon, or an ellipse according to the shape of the sensing magnet.

Referring to FIG. 14, in order to improve the sensitivity of the first position sensor 170, a sensing element 310 of the first position sensor 170 may overlap the sensing magnet 180 in the optical axis direction. .

For example, FIG. 14 may be an arrangement of the sensing magnet 180 and the first position sensor 170 at an initial position of the OIS movable unit.

At the initial position of the OIS movable part, the sensing element 310 of the first position sensor 170 may overlap the sensing magnet 180 in the optical axis direction.

For example, at the initial position of the OIS movable part, the sensing element 310 of the first position sensor 170 overlaps with the center 301 or the central region of the sensing magnet 180 in the optical axis direction, or the sensing magnet 180 It may be aligned in the center 301, but is not limited thereto.

Since the first position sensor 170 is disposed on a fixed part (eg, circuit board 250 and base 210), and the sensing magnet 180 is disposed on the OIS movable part, the OIS movable part is perpendicular to the optical axis with respect to the fixed part. When moving in one direction, the alignment or relative positional relationship in the optical axis direction between the sensing magnet 180 and the first position sensor 170 may be changed, and as a result, the sensitivity of the first position sensor 170 decreases or the first position The sensitivity of the sensor 170 may be affected.

The stroke range 320 of the OIS movable part in the direction perpendicular to the optical axis may overlap the sensing magnet 180, and thus, the movement of the OIS movable part in the direction perpendicular to the optical axis causes the first position sensor 170 to It can prevent the sensitivity from dropping.

For example, the stroke range 320 of the OIS movable part may be a circle having a maximum stroke of the OIS movable part as a radius. The maximum stroke of the OIS movable part may be a maximum stroke of the OIS movable part in either direction (eg, +X-axis direction or +Y-axis direction) perpendicular to the optical axis at the initial position of the OIS movable part.

That is, even if the OIS movable unit moves in the direction perpendicular to the optical axis, the first position sensor 170 and the sensing magnet 180 may maintain a state in which at least a portion of the first position sensor 170 and the sensing magnet 180 overlap in the optical axis direction. For example, the sensing element 310 of the first position sensor 170 and the sensing magnet 180 may maintain an overlapping state in the optical axis direction within the displacement in the direction perpendicular to the optical axis of the OIS movable part.

In addition, the sensing magnet 180 may have a size capable of covering the stroke range 320 of the OIS movable part.

For example, a cross-sectional area of the sensing magnet 180 in a direction perpendicular to the optical axis may be larger than an area of the stroke range 320 of the OIS movable part. In another embodiment, the cross-sectional area of the sensing magnet 180 in a direction perpendicular to the optical axis may be the same as the stroke range 320 of the OIS movable part.

15A illustrates a dummy member 135-1 according to another embodiment.

Referring to FIG. 15A, the dummy member 135-1 is a modified example of the dummy member 135, and may have a structure including portions divided into two portions without a groove.

For example, the dummy member 135-1 may include a first dummy 35A and a second dummy 35B spaced apart from each other.

For example, the protrusion 116 of the bobbin 110 may be disposed between the first dummy 35A and the second dummy 35B. Also, for example, the sensing magnet 180 may be disposed between the first dummy 35A and the second dummy 35B.

For example, the length or diameter R1 of the sensing magnet 180 in the horizontal direction may be smaller than the separation distance d1 between the first dummy 35A and the second dummy 35B (R1<d1).

In addition, for example, the length or diameter R1 of the sensing magnet 180 in the vertical direction is from the first surface 12a to the second surface 12b of the first dummy 35A (or the second dummy 35B). It can be less than or equal to the distance or length.

Further, for example, the length H of the sensing magnet 180 in the optical axis direction may be less than or equal to the length D3 of the first dummy 35A (or the second dummy 35B) in the optical axis direction ( H≤D3).

For example, the first dummy 35A and the second dummy 35B may have a shape symmetrical to each other, and may be symmetrically disposed with respect to the sensing magnet 180, but are not limited thereto.

The dummy member according to another embodiment may include only one of the first dummy 35A and the second dummy 35B.

15B illustrates a dummy member 135-2 according to another embodiment.

Referring to FIG. 15B, the dummy member 135-2 is a modified example of the dummy member 135, and a position where a groove is formed is different from the dummy member 135.

For example, the dummy member 135-2 may include a groove 135b formed in the second surface 12b.

Except for the arrangement of the grooves, the dummy member 135-2 may be substantially the same as the dummy member 135 of FIG. 11, and thus the relationship between the dummy member 135 and the sensing magnet 180 of FIG. 11 The description may be applied or applied mutatis mutandis to the dummy member 135-2.

In a dual or triple or more camera mounted on a mobile phone having functions such as zoom and wide vision, two or more lens driving devices are disposed adjacent to each other due to space constraints of the mobile phone. Due to such an adjacent arrangement, magnetic field interference may occur between magnet units included in two or more lens driving devices, and such magnetic field interference may cause malfunction in functions of the camera module such as AF operation and OIS operation.

In addition, due to the influence of gravity, the OIS movable unit may sag (or move) in the direction of the gravity, and due to this sag, the resolution of the camera module may deteriorate.

In order to realize high resolution, it is necessary to increase the size of the lens of the camera module and the size of the image sensor, and the weight of the AF movable part and the OIS movable part may increase due to the increase in the size of the lens. As the weight of the OIS movable part increases, the deflection of the OIS movable part in the gravitational direction due to the influence of gravity may become larger, and the resulting deterioration of the resolution may be worse.

Movement (or sagging) of the AF movable part in the direction of gravity may occur due to the influence of gravity, and movement (or sagging) of the OIS movable part in the gravitational direction may occur due to the influence of gravity. An error may occur in the AF operation of the camera module 200.

Generally, when the AF position sensor is placed on the OIS moving part (e.g., housing or bobbin), the AF position sensor can detect the displacement in the optical axis direction of the AF moving part through feedback operation, so the AF moving part is deflected by the influence of gravity. Can be automatically corrected or compensated.

However, since the AF position sensor placed on the OIS movable part cannot detect the displacement in the optical axis direction of the OIS movable part relative to the fixed part, the deflection or movement of the OIS movable part due to the influence of gravity is automatically corrected by the AF position sensor or It cannot be compensated.

In the embodiment, since the first position sensor 170 is disposed on the fixed part, the movement (or sagging) of the AF movable part caused by the movement (or sagging) of the OIS movable part due to the influence of gravity can be automatically compensated or corrected. have.

16 is a diagram for describing a sensing operation of the first position sensor 170 for compensating for sagging of the OIS movable unit due to the influence of gravity.

Referring to FIG. 16, the AF movable part 10A and the OIS movable part 10B of the lens driving apparatus 100 may be supported by the elastic part. For example, the elastic portion may include at least one of the upper elastic member 150, the lower elastic member 160, and the support member 220.

For example, the elastic portion has a first elastic portion 30A for elastically supporting the AF movable portion 10A with respect to the housing 140, and a second elastic portion for elastically supporting the OIS movable portion 10B with respect to the fixed portion 20 It may include an elastic portion (30B).

For example, the first elastic part 30A may include the upper elastic member 150 and the lower elastic member 160, and the second elastic part 30B may include the support member 220. The OIS movable part 10B supported with respect to the fixed part 20 by the first and second elastic parts 30A and 30B may sag or move in the direction of gravity due to the influence of gravity.

Also, depending on the difference in posture of the OIS movable part, the amount of deflection (k1) (or movement amount) of the OIS movable part due to the influence of gravity may be changed or affected. For example, the posture difference of the OIS movable part in FIG. 16 may correspond to a top view, and the posture difference may be 0 degrees. The difference in posture of the OIS movable part 10B is the optical axis OA (or reference axis 201) of the OIS movable part 10B at the reference position and the optical axis OA (or reference axis) of the OIS movable part 10B at the current position. It may be a slope or an angle between 201)). For example, the reference axis 201 may be a linear axis perpendicular to the sensor surface (eg, active area AR or effective area) of the image sensor 810.

In an embodiment, the first position sensor 170 is disposed on the fixing part 20. Compared with the case where the first position sensor is disposed on the OIS movable part, since the separation distance between the first position sensor 170 and the sensing magnet 180 may be increased, the first position sensor 170 is a hall sensor with high sensitivity. , Or may be implemented as a TMR (Tunnel Magnetoresistance) sensor. For example, when power (or configuration signal) provided to the first position sensor 170 is 1 mA, the sensitivity of the first position sensor 170 may be 0.3 [mV/mT] or more.

Even if the OIS movable part 10B moves or sags in the gravitational direction 301 due to the influence of gravity, a calibration between the output value of the AF position sensor 170 disposed on the fixed part 20 and the displacement of the AF movable part 10A ) Can be used to obtain information on the current displacement of the AF movable part 10A in the optical axis direction, so that the AF movable part 10A in the optical axis direction due to the deflection of the OIS movable part 10B due to the influence of gravity. Movement or sag can be automatically compensated.

17 is an exploded perspective view of the camera module 200 according to the embodiment.

Referring to FIG. 17, the camera module 200 includes a lens barrel 400, a lens driving device 100, an adhesive member 710, a filter 610, a first holder 600, a second holder 800, An image sensor 810, a motion sensor 820, a controller 830, and a connector 840 may be included.

The lens barrel 400 may be mounted on the bobbin 110 of the lens driving device 100.

The first holder 600 may be disposed under the base 210 of the lens driving device 100. The filter 610 is mounted on the first holder 600, and the first holder 600 may include a protrusion 500 on which the filter 610 is mounted.

The adhesive member 612 may couple or attach the base 210 of the lens driving device 100 to the first holder 600. In addition to the above-described adhesive role, the adhesive member 710 may serve to prevent foreign substances from flowing into the lens driving apparatus 100.

For example, the adhesive member 612 may be an epoxy, a thermosetting adhesive, or an ultraviolet curable adhesive.

The filter 610 may serve to block light of a specific frequency band in the light passing through the lens barrel 400 from entering the image sensor 810. The filter 610 may be an infrared cut filter, but is not limited thereto. In this case, the filter 610 may be disposed parallel to the x-y plane.

An opening may be formed at a portion of the first holder 600 on which the filter 610 is mounted so that light passing through the filter 610 can enter the image sensor 810.

The second holder 800 may be disposed under the first holder 600, and an image sensor 810 may be mounted on the second holder 600. The image sensor 810 is a portion where the light that has passed through the filter 610 is incident and an image including the light is formed.

The second holder 800 may be provided with various circuits, elements, control units, etc. to convert an image formed by the image sensor 810 into an electrical signal and transmit it to an external device.

The second holder 800 may be implemented as a circuit board on which an image sensor may be mounted, a circuit pattern may be formed, and various elements are coupled.

The first holder 600 may be expressed as a “holder” or a “sensor base”, and the second holder 800 may be expressed as a “substrate” or a “circuit board”.

The image sensor 810 may receive an image included in light incident through the lens driving device 100 and convert the received image into an electrical signal.

The filter 610 and the image sensor 810 may be disposed to be spaced apart to face each other in the first direction.

The motion sensor 820 is mounted on the second holder 800 and may be electrically connected to the controller 830 through a circuit pattern provided on the second holder 800.

The motion sensor 820 outputs rotational angular velocity information due to the movement of the camera module 200. The motion sensor 820 may be implemented as a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

The control unit 830 is mounted on the second holder 800 and may be electrically connected to the first position sensor 170 and the second position sensor 240 of the lens driving device 100. In addition, the control unit 830 may be electrically connected to the first coil 170 and the second coil 230.

For example, the second holder 800 may be electrically connected to the circuit board 250 of the lens driving apparatus 100, and the control unit 830 mounted on the second holder 800 is controlled through the circuit board 250. The first position sensor 170 and the second position sensor 240 may be electrically connected. In addition, the control unit 830 may be electrically connected to the first coil 120 and the second coil 230 through the circuit board 250.

The controller 830 may provide a driving signal to each of the first position sensor 170, the first sensor 240a, and the second sensor 240b.

For example, the control unit 830 may provide a power signal to at least one of the first position sensor 170, the first sensor 240a, and the second sensor 240b, and the clock signal and data for I2C communication The signal may be transmitted/received to at least one of the first position sensor 170, the first sensor 240a, and the second sensor 240b.

Also, the controller 830 may perform a feedback auto focusing operation on the AF movable unit of the lens driving apparatus based on the output provided from the first position sensor 170.

In addition, the controller 830 may perform a camera shake correction operation for the OIS movable part of the lens driving apparatus 100 based on the output of the first sensor 240a and the output of the second sensor 240b.

The connector 840 is electrically connected to the second holder 800 and may include a port for electrically connecting to an external device.

In addition, the lens driving apparatus 100 according to the embodiment forms an image of an object in space by using reflection, refraction, absorption, interference, diffraction, etc., which are characteristics of light, and aims to increase the visual power of the eye, or It may be included in an optical instrument for the purpose of recording and reproducing images by means of or for optical measurement, propagation or transmission of images, etc. For example, optical devices according to the embodiment include mobile phones, mobile phones, smart phones, portable smart devices, digital cameras, laptop computers, digital broadcasting terminals, personal digital assistants (PDAs), and portable multimedia players (PMPs). ), navigation, etc., but is not limited thereto, and any device for capturing an image or photo may be used.

18 is a perspective view of a portable terminal 200A according to an embodiment, and FIG. 19 is a configuration diagram of the portable terminal shown in FIG. 18.

17 and 18, the portable terminal 200A (hereinafter referred to as "terminal") includes a body 850, a wireless communication unit 710, an A/V input unit 720, a sensing unit 740, and An output unit 750, a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790 may be included.

The body 850 shown in FIG. 18 is in the form of a bar, but is not limited thereto, and a slide type, a folder type, and a swing type in which two or more sub-bodies are coupled to enable relative movement. , Swirl type, etc. may have various structures.

The body 850 may include a case (casing, housing, cover, etc.) forming an exterior. For example, the body 850 may be divided into a front case 851 and a rear case 852. Various electronic components of the terminal may be embedded in a space formed between the front case 851 and the rear case 852.

The wireless communication unit 710 may include one or more modules that enable wireless communication between the terminal 200A and a wireless communication system or between the terminal 200A and a network in which the terminal 200A is located. For example, the wireless communication unit 710 may be configured to include a broadcast reception module 711, a mobile communication module 712, a wireless Internet module 713, a short-range communication module 714, and a location information module 715. have.

The A/V (Audio/Video) input unit 720 is for inputting an audio signal or a video signal, and may include a camera 721 and a microphone 722.

The camera 721 may be the camera 200 including the camera module 200 according to the embodiment.

The sensing unit 740 monitors the current state of the terminal 200A, such as the open/closed state of the terminal 200A, the position of the terminal 200A, the presence of user contact, the orientation of the terminal 200A, and acceleration/deceleration of the terminal 200A. By sensing, a sensing signal for controlling the operation of the terminal 200A may be generated. For example, when the terminal 200A is in the form of a slide phone, it is possible to sense whether the slide phone is opened or closed. In addition, it is responsible for a sensing function related to whether the power supply unit 790 supplies power and whether the interface unit 770 is coupled to an external device.

The input/output unit 750 is for generating an input or output related to visual, auditory, or tactile sense. The input/output unit 750 may generate input data for controlling the operation of the terminal 200A, and may also display information processed by the terminal 200A.

The input/output unit 750 may include a keypad unit 730, a display module 751, an audio output module 752, and a touch screen panel 753. The keypad unit 730 may generate input data by inputting a keypad.

The display module 751 may include a plurality of pixels whose color changes according to an electrical signal. For example, the display module 751 includes a liquid crystal display, a thin film transistor-liquid crystal display, an organic light-emitting diode, a flexible display, and a three-dimensional display. It may include at least one of 3D displays.

The sound output module 752 outputs audio data received from the wireless communication unit 710 in a call signal reception, a call mode, a recording mode, a voice recognition mode, or a broadcast reception mode, or stored in the memory unit 760. Audio data can be output.

The touch screen panel 753 may convert a change in capacitance caused by a user's touch to a specific area of the touch screen into an electric input signal.

The memory unit 760 may store a program for processing and control of the controller 780, and store input/output data (eg, a phone book, a message, an audio, a still image, a picture, a video, etc.). Can be stored temporarily. For example, the memory unit 760 may store an image captured by the camera 721, for example, a photo or a video.

The interface unit 770 serves as a passage for connecting to external devices connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power, and transmits the data to each component inside the terminal 200A, or transmits data inside the terminal 200A to an external device. For example, the interface unit 770 includes a wired/wireless headset port, an external charger port, a wired/wireless data port, a memory card port, a port connecting a device equipped with an identification module, and an audio input/output (I/O) port. Output) port, video input/output (I/O) port, and earphone port.

The controller 780 may control the overall operation of the terminal 200A. For example, the controller 780 may perform related control and processing for voice calls, data communication, and video calls.

The controller 780 may include a multimedia module 781 for playing multimedia. The multimedia module 781 may be implemented in the controller 180 or may be implemented separately from the controller 780.

The controller 780 may perform pattern recognition processing capable of recognizing a handwriting input or a drawing input performed on the touch screen as characters and images, respectively.

20 is a perspective view of a camera module 1000 according to another embodiment.

Referring to FIG. 20, the camera module 1000 includes a first camera module 100-1 including a first lens driving device and a second camera module 100-2 including a second lens driving device. It may be a dual camera module.

For example, each of the first camera module 100-1 and the second camera module 100-2 may be one of a camera module for auto focus (AF) and a camera module for optical image stabilizer (OIS).

The AF camera module means that only the auto focus function can be performed, and the OIS camera module means that the auto focus function and the OIS (Optical Image Stabilizer) function can be performed.

For example, the first lens driving device may be the embodiment 100 shown in FIG. 1, and the second lens driving device may be the embodiment shown in FIG. 1 or the AF lens driving device.

The camera module 1000 may further include a circuit board 1100 for mounting the first camera module 100-1 and the second camera module 100-2. In FIG. 19, the first camera module 100-1 and the second camera module 100-2 are arranged side by side on one circuit board 1100, but the present invention is not limited thereto. In another embodiment, the circuit board 1100 may include a first circuit board and a second circuit board separated from each other, and the first camera module 100-1 may be disposed on the first circuit board, and the second The camera module may be disposed on the second circuit board.

21A is an embodiment of a dual camera module mounted on the terminal 200A.

Referring to FIG. 21A, each of the first lens driving device 100-1 and the second lens driving device 100-2 of the dual camera module 1000 may be a lens driving device 100 according to an exemplary embodiment.

The dummy member 135 of the first lens driving device 100-1 and the dummy member 135 of the second lens driving device 100-2 may be disposed to be adjacent to each other.

For example, when looking at the front or rear of the terminal 200A, the dummy member 135 of the first lens driving device 100-1 and the dummy member of the second lens driving device 100-2 are symmetrically left and right. Can be placed.

In addition, a speaker 201 or a receiver may be disposed at one end (eg, top) of the front or rear side of the terminal, and the first to third magnets of the first and second lens driving devices 100-1 and 100-2 respectively When the units 130-1 to 130-3 are disposed adjacent to the speaker 201, the first to third magnetic units 130-1 to 130-3 are included in the speaker 201 (or receiver). This is because it can be greatly influenced by the magnetic field of the magnet, which can degrade the accuracy of the AF operation and OIS operation.

In order to reduce the influence of magnetic field interference caused by the magnet included in the speaker 201, in the embodiment, the dummy member 135 of the first lens driving device 100-1 and the second lens driving device 100-2 are Each of the dummy members 135 may be disposed to be closer to the speaker 201 than the first to third magnet units 130-1 to 130-3. Since the influence of the magnetic field interference by the speaker 201 can be reduced, the degree of freedom in the arrangement and design of the speaker 201 or the receiver can be improved in the embodiment.

21B is another embodiment of a dual camera module mounted on a terminal.

Referring to FIG. 21B, when looking at the front or rear of the terminal 200A, the dummy member 135 of the first lens driving device 100-1 and the dummy member of the second lens driving device 100-2 are It can be placed symmetrically in origin.

For example, the dummy member 135 of any one of the first and second lens driving devices 100-1 and 100-2 (eg, 100-2) is the first and second lens driving devices 100-1 , 100-2), the other dummy member 135 of the other (eg, 100-1) may be disposed adjacent to the speaker 201. Through this arrangement, the magnet units 130-1 to 130-3 of the first lens driving device 100-1 and the magnet units 130-1 to 130-3 of the second lens driving device 100-2 ) Can reduce the effect of magnetic field interference.

Features, structures, effects, and the like described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment may be combined or modified for other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Accordingly, contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

Claims (17)

Board;
A housing disposed on the substrate;
A bobbin disposed in the housing;
A first coil disposed on the bobbin;
A sensing magnet disposed on the bobbin;
A magnet corresponding to the first coil;
A second coil corresponding to the magnet in the optical axis direction; And
Including a first sensor and a second sensor disposed on the substrate,
The first sensor corresponds to the magnet in the optical axis direction,
The second sensor corresponds to the sensing magnet in the optical axis direction,
The magnet is a lens driving device disposed at a corner of the housing. The method of claim 1,
The first sensor and the second sensor are disposed on a lower surface of the substrate. The method of claim 1,
The second sensor is a lens driving device disposed on the upper surface of the substrate. Board;
A housing disposed on the substrate;
A bobbin disposed in the housing;
A first coil disposed on the bobbin;
A sensing magnet disposed on the bobbin;
A magnet and a dummy member disposed in the housing;
A second coil corresponding to the magnet in the optical axis direction;
Including a first sensor and a second sensor disposed on the substrate,
The first sensor corresponds to the magnet in the optical axis direction,
The second sensor corresponds to the sensing magnet in the optical axis direction,
The magnet includes first to third magnet units respectively disposed at first to third corners of the housing,
The dummy member is a lens driving device disposed at a fourth corner of the housing. The method of claim 4,
An elastic member coupled to the bobbin and the housing; And
A support member connecting the elastic member and the substrate,
The second coil includes the first to third magnet units and first to third coil units corresponding to the optical axis direction,
The first magnet unit and the second magnet unit are positioned opposite to each other, and the third magnet unit and the dummy member are positioned opposite to each other. The method of claim 5,
The first sensor includes a first OIS sensor overlapping with the first magnet unit in the optical axis direction and a second OIS sensor overlapping with the third magnet unit in the optical axis direction,
The sensing magnet is a lens driving device that overlaps with the second sensor in an optical axis direction. The method of claim 4,
The first coil is disposed to surround the outer surface of the bobbin,
The sensing magnet is a lens driving device disposed outside the first coil. The method of claim 1,
The bobbin includes a protrusion protruding from an outer surface,
The sensing magnet is a lens driving device coupled to the protrusion. The method of claim 8,
The dummy member includes a groove corresponding to the protrusion,
At least a portion of the protrusion is disposed in the groove of the dummy member. The method of claim 8,
The sensing magnet is a lens driving device protruding from the lower surface of the bobbin. The method of claim 1,
The dummy member does not overlap with the second coil in the optical axis direction. The method of claim 9,
The dummy member includes a first surface facing the first coil, and a second surface opposite to the first surface,
The groove of the dummy member is formed on the first surface or the second surface of the dummy member. The method of claim 4,
The dummy member includes a first dummy and a second dummy spaced apart from each other,
At least a portion of the sensing magnet is disposed between the first dummy and the second dummy. The method of claim 12,
The groove of the dummy member includes at least one of a first opening that opens to a lower surface of the dummy member facing the substrate and a second opening that opens to an upper surface of the dummy member. The method of claim 4,
The dummy member is a non-magnetic lens driving device. The method of claim 6,
When the bobbin is moved in the direction of the optical axis, the second sensor outputs an output signal according to a result of detecting the strength of the magnetic field of the sensing magnet,
When the housing is moved in a direction perpendicular to the optical axis, the first OIS sensor outputs an output signal according to a result of detecting the strength of the magnetic field of the first magnet, and the second OIS sensor A lens driving device that outputs an output signal according to the result of detecting the strength of the magnetic field of. Fixed part;
An AF movable part including a bobbin, and an OIS movable part including a housing;
A first elastic part supporting the AF movable part with respect to the housing;
A second elastic part supporting the OIS movable part with respect to the fixed part;
A first coil disposed on the bobbin;
A sensing magnet disposed on the bobbin;
A first magnet and a second magnet disposed on the housing and positioned opposite to each other;
A third magnet and a dummy member disposed in the housing and positioned opposite to each other;
A second coil including first to third coil units corresponding to the first to third magnet units in an optical axis direction;
An AF position sensor disposed on the fixing unit and corresponding to the sensing magnet; And
A lens driving device disposed on the fixing unit and including a first OIS sensor corresponding to the first magnet and a second OIS sensor corresponding to the third magnet.

Images