KR20200076131A - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

An embodiment provides a lens driving device, which comprises: a housing; a bobbin disposed in the housing; a first coil coupled to the bobbin; a magnet disposed in the housing and facing the first coil; a base disposed spaced apart from the bobbin; a lower elastic member including a first elastic member and a second elastic member coupled to the bobbin and disposed on the base; a second coil including a first sensing coil disposed in the housing and a second sensing coil disposed in the base, and generating an induced voltage by interaction with the first coil; and a first terminal, a second terminal, and a third terminal coupled to the base and spaced apart from the first and second elastic members. One end of the first coil is coupled with the first elastic member and the other end of the first coil is coupled with the second elastic member. One end of the first sensing coil is coupled to the first terminal, the other end of the first sensing coil is coupled to the third terminal, one end of the second sensing coil is coupled to the second terminal, and the other end of the second sensing coil is coupled to the third terminal.

Description

Lens driving device, and camera module and optical device including same{A LENS MOVING UNIT, AND CAMERA MODULE AND OPTICAL INSTRUMENT INCLUDING THE SAME}

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

The camera module for ultra-small and low power consumption is difficult to apply the technology of the voice coil motor (VCM) used in the existing general camera module, and research on this has been actively conducted.

Demand and production of electronic products such as smartphones and mobile phones equipped with cameras are increasing. Cameras for mobile phones are trending toward high pixel size and miniaturization, and accordingly, actuators are also becoming miniaturized, large caliber, and multi-functional. In order to realize a high-resolution camera for mobile phones, additional functions such as performance improvement and auto focusing, shutter shake improvement, and zoom function of the mobile phone camera are required.

An embodiment may increase the inductance of the sensing coil, increase the magnitude of the induced voltage generated in the sensing coil, and improve the sensing sensitivity of the sensing coil, a lens driving device, and a camera module and optics including the same Provide the device.

The lens driving apparatus according to the embodiment includes a housing; A bobbin disposed in the housing; A first coil coupled with the bobbin; A magnet disposed in the housing and facing the first coil; A base spaced apart from the bobbin; A lower elastic member coupled to the bobbin and including a first elastic member and a second elastic member disposed on the base; A second coil including a first sensing coil disposed in the housing and a second sensing coil disposed in the base, and generating an induced voltage by interaction with the first coil; And a first terminal, a second terminal, and a third terminal coupled to the base and spaced apart from the first and second elastic members, wherein one end of the first coil is coupled to the first elastic member and , The other end of the first coil is coupled to the second elastic member, one end of the first sensing coil is coupled to the first terminal, the other end of the first sensing coil is coupled to the third terminal, the One end of the second sensing coil is coupled to the second terminal, and the other end of the second sensing coil is coupled to the third terminal.

The induction voltage of the second coil may be output through the first and second terminals.

The first coil has a ring shape surrounding the outer surface of the bobbin, the first sensing coil has a ring shape surrounding the outer surface of the housing, the base includes an opening, and the second sensing coil is the It may have a ring shape surrounding the opening of the base.

The housing includes a first corner portion, a second corner portion, a first side portion connecting the first corner portion and the second corner portion, a first guide groove formed on an outer surface of the first corner portion, and the second corner portion. It includes a second guide groove formed on the outer surface of the corner portion, the base includes a first protrusion facing the first guide groove and a second protrusion facing the second guide groove, the first to the first The three terminals may be disposed on the first side of the base facing the first side of the housing.

The first terminal includes a first body disposed on the first side of the base and a first extension extending from the first body to the first protrusion of the base, and the second terminal is the base It includes a second body disposed on a second side, and the third terminal includes a third body disposed on the first side of the base and a second extension extending from the third body to the second protrusion of the base. It may contain wealth.

The end of the first extension is exposed from the top surface of the first protrusion of the base, the end of the second extension is exposed from the top surface of the second protrusion of the base, and one end of the first sensing coil is the Is coupled to the end of the first extension, the other end of the first sensing coil is coupled to the end of the second extension, one end of the second sensing coil is coupled to the second body of the second terminal, the The other end of the second sensing coil may be coupled to the third body of the third terminal.

Each of the first and second terminals may include a first portion exposed from an upper surface of the base, and a second portion connected to the first portion and bent in an outer surface direction of the first side of the base. Wherein, each of the first and second elastic members is an inner portion coupled to the lower portion of the bobbin, an outer portion coupled to the lower portion of the housing, a connecting portion connecting the inner portion and the outer portion, and the outer portion connected to the outer portion of the base It may include a connection terminal disposed on the outer surface of the first side.

The winding direction of the first sensing coil when proceeding from the one end of the first sensing coil to the other end of the first sensing coil is when proceeding from the other end of the second sensing coil to the one end of the second sensing coil It may be the same as the winding direction of the second sensing coil of.

A driving signal is provided to the first coil through the connecting terminal of the first elastic member and the connecting terminal of the second elastic member, and the driving signal includes an AC signal or an AC signal and a DC signal. can do.

In the initial position of the bobbin, the first separation distance in the optical axis direction between the first coil and the first sensing coil is less than or equal to the second separation distance in the optical axis direction between the first coil and the second sensing coil. Can.

In an embodiment, the inductance of the sensing coil may be increased, the magnitude of the induced voltage generated in the sensing coil may be increased, and the sensing sensitivity of the sensing coil may be improved.

1 shows an exploded perspective view of a lens driving device.
FIG. 2 is a perspective view showing a combination of the lens driving device except the cover member of FIG. 1.
3A is a first perspective view of the bobbin shown in FIG. 1.
3B is a combined perspective view of the bobbin and the first coil shown in FIG. 1.
4A shows a perspective view of the housing shown in FIG. 1.
4B shows a perspective perspective view of the housing, the first sensing coil, and the magnet.
5 is an exploded perspective view of the base to which the first to third terminals are coupled, the second sensing coil, and the lower elastic member.
6 is a plan view of the second sensing coil, the base, and the first to third terminals.
7 is a partially enlarged view of the base of FIG. 6.
8 is a perspective view of the first to third terminals.
9 is a combined perspective view of the first to third terminals, the base, the second sensing coil, and the lower elastic member.
10A shows perspective views of the first sensing coil and the first to third terminals disposed in the housing.
10B shows perspective views of first sensing coils disposed in a housing and first to third terminals disposed in a base.
11 is a plan view of the first coil, the second coil, and the first to third terminals.
FIG. 12 shows the bottom view of FIG. 9.
13 shows a cross-sectional view of the lens driving device 100 in the AB direction of FIG. 2.
14 shows a separation distance between the first sensing coil, the first coil, and the second sensing coil.
15 is a circuit diagram for explaining an induced voltage according to the interaction between the first coil and the second coil.
16 is an exploded perspective view of a camera module according to an embodiment.
17 is a perspective view of a portable terminal according to an embodiment.
18 shows a configuration diagram of the portable terminal illustrated in FIG. 17.

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

However, the technical spirit of the present invention is not limited to some embodiments described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of its components between embodiments may be selectively selected. It can be used by bonding and substitution.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention, unless explicitly defined and specifically defined, meanings that can be generally understood by those skilled in the art to which the present invention pertains It can be interpreted as, and commonly used terms such as predefined terms may be interpreted by considering the contextual meaning of the related technology.

In addition, the 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, a singular form may also include a plural form unless specifically stated in the phrase, and when described as "at least one (or more than one) of A and B, C", A, B, and C may be combined. It can include one or more of all possible combinations.

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

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 to the component It may also include a case of'connected','coupled' or'connected' due to another component between the other components. Further, when described as being formed or disposed in 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 another component described above is formed or disposed between two components. In addition, when expressed as "up (up) or down (down)", it may include the meaning of the downward direction as well as the upward direction based on one component.

'Auto focusing' means to automatically focus the image of the subject on the image sensor surface. The lens driving apparatus according to the embodiment may perform an auto-focusing operation of moving an optical module composed of at least one lens in a first direction.

Hereinafter, the lens driving device may be referred to as a lens driving unit, a VCM (Voice Coil Motor), or an actuator, and hereinafter, the term "coil" may be expressed by replacing a coil unit, The term "elastic member" can be expressed by replacing it with an elastic unit, or a spring.

Also, in the following description, “terminal” may be expressed by replacing a pad, an electrode, a conductive layer, or a bonding portion.

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 another coordinate system, 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, and the z-axis direction, which is the optical axis (OA) direction, is referred to as a'first direction', and the x-axis direction is referred to as a'second direction'. And the y-axis direction may be referred to as a'third direction'.

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

1 and 2, the lens driving device 100 includes a bobbin (Bobbin, 110), a first coil 120, a magnet (Magnet, 130), a housing (Housing, 140), a base 210, a product It may include two coils 170, a first terminal 81, a second terminal 82, and a third terminal 83.

In addition, the lens driving apparatus 100 may further include at least one of the upper elastic member 150, the lower elastic member 160, and the cover member 300.

First, the cover member 300 will be described.

The cover member 300 is a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, a lower elastic member ( 160), the second coil 170, and the first to third terminals 81 to 83.

The cover member 300 may be in the form of a box with a lower opening and a top plate 301 and side plates 302, and a lower end of the side plates 302 of the cover member 300 may be a stepped side of the base 210 It can be combined with (211). When viewed from the top, the shape of the top plate 301 of the cover member 300 may be a polygon, for example, a square or an octagon.

The top plate 301 of the cover member 300 may be provided with an opening (or hollow) for exposing a lens (not shown) coupled with the bobbin 110 to external light.

The material of the cover member 300 may be a non-magnetic material such as SUS or the like to prevent the magnet 130 from sticking, but may also be formed of a magnetic material to function as a yoke.

Next, the bobbin 110 will be described.

3A is a first perspective view of the bobbin 110 shown in FIG. 1, and FIG. 3B is a combined perspective view of the bobbin 110 and the first coil 120 shown in FIG. 1.

Referring to FIGS. 3A and 3B, the bobbin 110 is disposed inside the housing 140, and the optical axis (OA) direction or optical axis is formed by electromagnetic interaction between the first coil 120 and the magnet 130. It can move in a parallel direction.

The bobbin 110 may have an opening or a hollow for mounting a lens or lens barrel. The shape of the opening (or hollow) of the bobbin 110 may match the shape of the lens or lens barrel to be mounted, and may be, for example, circular, elliptical, or polygonal, but is not limited thereto. For example, the opening of the bobbin 110 may be in the form of a hole penetrating the bobbin 110 in the optical axis direction.

A lens or a lens module may be directly coupled to the inner surface of the bobbin 110, but is not limited thereto. For example, the bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed therein, and the lens barrel may be coupled to the inner surface of the bobbin 110 in various ways. For example, a thread for coupling with a lens or a lens module may be formed on the inner surface of the bobbin 110.

At least one first coupling portion 113 for coupling and fixing to the inner frame 151 of the upper elastic member 150 may be provided on an upper surface, an upper portion, or an upper portion of the bobbin 110.

At least one second coupling portion 117 for coupling and fixing to the inner frame 161 of the lower elastic member 160 may be provided on a lower surface, a lower surface, or a lower surface of the bobbin 110.

For example, in FIGS. 3A and 3B, each of the first coupling portion 113 and the second coupling portion 117 of the bobbin 110 is in a protruding shape, but is not limited thereto, and in other embodiments, the bobbin 110 is made of At least one of the first and second coupling portions may have a coupling groove or a flat shape.

A first escape groove 112a may be provided in one region of the upper surface of the bobbin 110 that is aligned or corresponds to the first frame connecting portion 153 of the upper elastic member 150.

In addition, a second escape groove 112b may be provided in one region of the lower surface of the bobbin 110 that is aligned or corresponds to the second frame connecting portion 163 of the lower elastic member 160.

When the bobbin 110 is moved in the first direction, the first and second frame connecting parts 153 and 163 and the bobbin by the first escape groove 112a and the second escape groove 112b of the bobbin 110 Spatial interference with each other 110 can be avoided, whereby the first and second frame connecting portions 153 and 163 of the upper and lower elastic members 150 and 160 can be elastically deformed more easily.

In another embodiment, the first frame connecting portion of the upper elastic member and the bobbin may be designed such that they do not interfere with each other, and the bobbin may not have a first escape groove and/or a second escape groove.

The outer surface of the bobbin 110 may include at least one groove 105 for disposing the first coil 120.

The first coil 120 may be disposed or seated in the groove 105 of the bobbin 110. For example, the first coil 120 may be wound or wound directly around the groove 105 of the bobbin 110 so as to rotate clockwise or counterclockwise relative to the optical axis OA.

The shape and number of the grooves 105 of the bobbin 110 may correspond to the shape and number of coils disposed on the outer surface of the bobbin 110. In another embodiment, the bobbin 110 may not have a groove for seating the coil, and the first coil 120 may be wound or wound directly on the outer surface of the bobbin 110 without groove to be fixed.

A groove 106 for passing a line of sight (eg, one end) or a line (eg, the other end) of the first coil 120 may be formed at a lower end of the outer surface of the bobbin 110.

Next, the first coil 120 will be described.

The first coil 120 may be disposed on the bobbin 110 or coupled or connected to the bobbin 110 or supported by the bobbin 110. For example, the first coil 120 may be disposed on the outer surface of the bobbin 110, and electromagnetically interacts with the magnet 130 disposed on the housing 140.

A power supply or a driving signal may be applied to the first coil 120 to generate electromagnetic force by interacting with the magnet 130.

In order to generate an induced voltage by mutual induction with the second coil 170, the driving signal provided to the first coil 120 may include an AC signal or an AC signal and a DC signal.

For example, the AC signal provided to the first coil 120 may be a sinusoidal wave or a pulse signal (eg, PWM signal). For example, the driving signal may be in the form of current or voltage.

For example, the direct current signal of the drive signal can move the AF moving part in the optical axis direction by interaction with the magnet, and the alternating current signal of the drive signal is provided for generating an induced voltage by interaction with the second coil 170 It may be, but is not limited thereto.

The bobbin 110 elastically supported by the upper and lower elastic members 150 and 160 by electromagnetic force due to electromagnetic interaction between the first coil 120 and the magnet 130 may move in the optical axis direction or the first direction. .

By controlling the driving signal provided to the first coil 120, it is possible to control the movement of the bobbin 110 in the first direction, thereby performing an auto focusing function.

The first coil 120 may be arranged to surround the outer surface of the bobbin 110 to rotate clockwise or counterclockwise around the optical axis. For example, the first coil 120 may be disposed or wound in the groove 105 provided on the outer surface of the bobbin 110.

For example, the first coil 120 may have a closed curve or a ring shape.

In another embodiment, the first coil 120 may be implemented in the form of a coil ring wound in a clockwise or counterclockwise direction around an axis perpendicular to the optical axis, and the number of coil rings may be the same as the number of magnets 130. However, it is not limited thereto.

The first coil 120 may be electrically connected to at least one of the upper or lower elastic members 150 and 160. A driving signal may be applied to the first coil 120 through at least one of the upper or lower elastic members 150 and 160. For example, a driving signal may be provided to the first coil 120 through the first and second elastic members 160-1 and 160-2.

Next, the housing 140 will be described.

4A shows a perspective view of the housing 140 shown in FIG. 1, and FIG. 4B shows a combined perspective view of the housing 140, the first sensing coil 170a of the second coil 170, and the magnet 130. .

4A and 4B, the housing 140 supports the magnet 130 and accommodates the bobbin 110 inside so that the bobbin 110 can move in the first direction.

The housing 140 may have a hollow pillar shape as a whole.

The housing 140 may have an opening (or hollow) for accommodating the bobbin 110, and the opening of the housing 140 may be a through hole penetrating the housing 140 in the optical axis direction.

The housing 140 may include sides 141-1 to 141-4 (or “first sides”) and corner portions 142-1 to 142-4 (or “second sides”).

For example, the housing 140 includes a plurality of sides (141-1 to 141-4) and corner portions (142-1 to 142-4) forming a polygonal (eg, square or octagonal) or circular opening. can do. At this time, the corner portions of the housing 140 may be expressed as “pillars”.

For example, the side portions 141-1 to 141-4 of the housing 140 may be disposed at positions corresponding to the side plates 302 of the cover member 300, and the side portions of the housing 140 corresponding to each other. The side plates of the cover member 300 may be parallel.

For example, the side portions 141-1 to 141-4 of the housing 140 may be portions corresponding to sides of the housing 140, and the corner portions 142-1 to 142-4 of the housing 140 may be It may be a portion corresponding to the edge of the housing 140.

The inner surface of each of the corner portions 142-1 to 142-4 of the housing 140 may be a flat surface, a chamfer, or a curved surface.

The magnet 130 may be disposed or installed on at least one of the side parts 141-1 to 141-4 of the housing 140. For example, the first to fourth side portions 141-1 to 141-4 of the housing 140 are provided with seating portions 141a in which the magnets 130-1 to 130-4 are seated, arranged, or fixed. Can be.

In FIG. 4A, the seating portion 141a may be in the form of an opening or a through hole penetrating the side portions 141-1 to 141-4 of the housing 140, but is not limited thereto. It may be.

The housing 140 may include a support portion 18 adjacent to the seating portion 141a to support the edge of the first surface of the magnet 130 facing the first coil 120.

The support portion 18 may be positioned adjacent to the inner surface of the housing 140, and may have a shape protruding in the horizontal direction based on the side surface of the seating portion 141a. Also, for example, the support portion 18 may include a tapered portion or an inclined surface. In other embodiments, the housing 140 may not include the support 18.

The housing 140 may include a seating groove 141b for arranging or accommodating or winding the first sensing coil 170a of the second coil 120.

The seating groove 141b may be provided on the top of at least one outer surface of the side portions 141-1 to 141-4 and the corner portions 142-1 to 142-4 of the housing 140.

For example, the seating groove 141b may be provided at an upper end of the outer surfaces of the side parts 141-1 to 141-4 and the corner parts 142-1 to 142-4, spaced apart from the upper surface of the housing 140. , But is not limited thereto.

The depth of the seating groove 141b may be greater than or equal to the ring thickness of the first sensing coil 170a to be wound. For example, the first sensing coil 170a disposed in the seating groove 141b is from the outer surfaces of the side parts 141-1 to 141-4 of the housing 140 and the corner parts 142-1 to 142-4. It may not protrude. This is to prevent the first sensing coil 170a disposed in the seating groove 141b from escaping out of the seating groove 141b.

The seating groove 141b may be provided on the seating portion 141a on which the magnet 130 is seated. For example, the seating groove 141b may not overlap the seating portion 141a in a direction perpendicular to the optical axis OA, but is not limited thereto.

In addition, a guide groove 148 for inserting, fastening, or engaging protrusions (for example, 216a to 216d) of the base 210 at the lower portion of the outer surface of the corner portions 142-1 to 142-4 of the housing 140 This may be provided.

The housing 140 may include a first groove 45a formed in the first corner portion 142-1 and a second groove 45b formed in the second corner portion 142-2.

For example, the first groove 45a may be formed on the outer surface of the first corner portion 142-1 of the housing 140, and the second groove 45b is the second corner portion 142 of the housing 140. -2).

For example, the first groove 45a of the housing 140 may be disposed on one side of the seating portion 141a provided on the first side 141-1 of the housing 140 for the placement of the magnet 130-1. The second groove 45b may be disposed on the other side of the seating portion 141a provided on the first side portion 141-1 of the housing 140.

The first groove 45a and the second groove 45b to prevent the third portion 17c and the fifth portion 17e of the first sensing coil 170a from deviating from the outer side of the side of the housing 140 Each depth may be greater than the thickness of one strand of the first sensing coil 170a.

Each of the first groove 45a and the second groove 45b may communicate with the seating groove 141b of the housing 140, and the first and second corner portions of the housing 140 in the seating groove 141b ( 142-1, 142-2) may extend to each guide groove 148.

In addition, the housing 140 is a guide groove 148 formed in the first projection 47a and the second corner portion 142-2 formed on one surface of the guide groove 148 formed in the first corner portion 142-1. ) May have a second projection 47b formed on one surface. For example, one surface of the guide groove 148 may be a surface located at an upper portion among the surfaces forming the guide groove 148.

The first and second protrusions 47a and 47b may protrude into the guide groove 148. Alternatively, the first and second protrusions 47a and 47b may protrude from one surface of the guide groove 148 toward the lower surface or the lower surface of the housing 140, and wind and fix both ends of the first sensing coil 170a. It can serve as a fixing part.

In order to prevent the inner surface of the top plate of the cover member 300 from directly colliding, the housing 140 may include a stopper 143 formed on the top, top, or top of the housing 140. Here, the stopper 143 may be expressed by replacing it with a "boss" or "protrusion".

For example, the stopper 143 may be formed on corner portions of the housing 140, but is not limited thereto. In another embodiment, the stopper 143 is formed on at least one of the side portions and the corner portions of the housing 140. Can be.

For example, the top surface of the stopper 143 of the housing 140 may contact the inner surface of the top plate 301 of the cover member 300, but is not limited thereto. In other embodiments, both may or may not contact.

In addition, at least one first coupling portion 144 for coupling the outer frame 152 of the upper elastic member 150 may be provided on an upper surface, an upper side, or an upper side of the housing 140. In addition, at least one second coupling portion 147 for coupling the outer frame 162 of the lower elastic member 160 may be provided on a lower surface, a lower surface, or a lower surface of the housing 140.

In FIGS. 4A and 4B, the first and second coupling portions 144 and 147 of the housing 140 are each protruding, but are not limited thereto, and in other embodiments, the first and second coupling portions 144 and 147 ) May be in the form of a groove or a flat surface.

The guide groove 148 of the housing 140 and the protrusions (for example, 216a to 216d) of the base 210 may be combined by an adhesive (not shown) such as silicone or epoxy, and the housing 140 may include the base 210 ).

Next, the magnet 130 will be described.

In the initial position of the AF movable unit (eg, bobbin 110), the magnet 130 may be disposed on the sides 141-1 to 141-4 of the housing 140 to correspond to or align with the first coil 120. have.

Here, the initial position of the AF movable part (eg, bobbin 110) is the first position of the AF movable part without applying power to the first coil 120, or the upper and lower elastic members 150 and 160 are merely the AF movable part As it is elastically deformed only by weight, it may be a position where the AF movable part is placed.

In addition, the initial position of the AF movable unit (eg, bobbin 110) is when gravity acts from bobbin 110 to base 210, or vice versa when gravity acts from base 210 to bobbin 110. It may be a position in which the AF moving part is placed.

For example, the AF movable unit may include components mounted on the bobbin 110 and the bobbin 110. For example, the AF movable unit may include a bobbin 110 and a coil 120, and may also include a lens or a lens barrel when mounted.

According to an embodiment of the present invention, an interaction between the first coil 120 and the magnet 130 may enable bidirectional driving in which the AF movable unit can move forward (or upper) and rear (or lower) at the initial position of the AF movable unit. Alternatively, in another embodiment, the interaction between the first coil 120 and the magnet 130 may perform bidirectional driving, in which the AF movable unit can move only forward (or upward) at the initial position of the AF movable unit.

In the initial position of the AF movable unit, the magnet 130 may be disposed on the seating portion 141a of the housing 140 to overlap the first coil 120 in a second direction or a third direction perpendicular to the optical axis direction.

In another embodiment, the seating portion 141a may not be formed on the side portions 141-1 to 141-4 of the housing 140, and the magnet 130 may have side portions 141-1 to of the housing 140. 141-4).

In an embodiment, the magnet 130 includes first to fourth magnets 130-1 to 130-4 disposed on first to fourth sides 141-1 to 141-4 of the housing 140. Including, but not limited to, the number of magnet 130 may be two or more. For example, another embodiment may include two magnets disposed on two sides of the housing 140 facing each other.

Each of the magnets 130-1 to 130-4 has a shape corresponding to the outer surfaces of the sides 141-1 to 141-4 of the housing 140, for example, a polyhedron (eg, a cuboid) shape as a whole. It may have, but is not limited to this.

Each of the magnets 130-1 to 130-4 may be a single-pole magnetized magnet having a boundary surface naturally formed between two different polarities and different polarities.

For example, each of the magnets 130-1 to 130-4 is a single-pole magnetized magnet that is disposed such that the first surface facing the first coil 120 is an N-pole, and the second surface opposite to the first surface is an S-pole. It may be, but is not limited thereto, and the N pole and the S pole may be opposite.

In another embodiment, in order to improve the electromagnetic force, each of the magnets 130-1 to 130-4 may be an anode magnetization magnet divided into two in a direction perpendicular to the optical axis. In this case, each of the magnets 130-1 to 130-4 may be implemented with ferrite, alnico, rare earth magnet, etc., but is not limited thereto.

When the magnets 130-1 to 130-4 are positive magnetizers, each of the magnets 130-1 to 130-4 includes a first magnet portion, a second magnet portion, and a first magnet portion and a second magnet portion It may include a partition wall disposed between.

The first magnet portion may include an N pole, an S pole, and a first interface between the N pole and the S pole. At this time, the first interface may be a portion having substantially no magnetism and may include a section having little polarity, and may be a portion naturally generated to form a magnet composed of one N-pole and one S-pole.

The second magnet portion may include an N pole, an S pole, and a second interface between the N pole and the S pole. At this time, the second interface may include a section having substantially no polarity as a portion having substantially no magnetism, and may be a portion naturally generated to form a magnet composed of one N pole and one S pole.

The partition wall separates or isolates the first magnet portion and the second magnet portion, and may be a portion having substantially no polarity as a portion having substantially no magnetism. For example, the partition wall may be a non-magnetic material, air, or the like. For example, the partition wall may be expressed as a “Neutral Zone” or a “neutral zone”.

The partition wall is a portion artificially formed when magnetizing the first magnet portion and the second magnet portion, and the width of the partition wall may be greater than the width of each of the first and second interface surfaces. Here, the width of the partition wall may be the length of the partition wall in a direction from the first magnet portion to the second magnet portion.

The first surface of each of the magnets 130-1 to 130-2 may be formed in a plane, but is not limited thereto, and the first surface of each of the magnets 130-1 to 130-2 is curved or inclined. Or, it may include a tapered portion. For example, the first surface of each of the magnets 130-1 to 130-4 may be an outer surface of the bobbin 110 or/and a surface facing the first coil 120.

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

5 is an exploded perspective view of the base 210 to which the first to third terminals 81, 82, and 83 are coupled, the second sensing coil 170b of the second coil 170, and the lower elastic member 160. 6 is a plan view of the second sensing coil 170b, the base 210, and the first to third terminals 81 to 83, and FIG. 7 is a partially enlarged view of the base 210 of FIG. , FIG. 8 is a perspective view of the first to third terminals 81 to 83, and FIG. 9 is the first to third terminals 81 to 83, the base 210, the second sensing coil 170b, and It is a combined perspective view of the lower elastic member 160.

2 and 5 to 9, the upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140 and elastically support the bobbin 110.

For example, the upper elastic member 150 may be combined with the top (or top, or top) of the bobbin 110 and/or the top (or top, or top) of the housing 140.

The lower elastic member 160 may be coupled to the lower (or lower, or lower) of the bobbin 110 and/or the lower (or lower, or lower) of the housing 140.

In FIG. 2, the upper elastic member 150 is not separated into a plurality, but is not limited thereto. In another embodiment, the upper elastic member 150 may include a plurality of elastic units spaced apart from each other.

Referring to FIG. 2, the upper elastic member 150 includes a first inner frame 151 coupled with an upper portion of the bobbin 110, a first outer frame 152 coupled with an upper portion of the housing 140, and a first A first frame connection part 153 connecting the inner frame 151 and the second outer frame 152 may be included. Hereinafter, the inner frame may be represented by replacing the “inner side”, the outer frame may be represented by replacing the “outer portion”, and the frame connecting portion may be represented by replacing the “connecting portion”.

The first inner frame 151 of the upper elastic member 150 may be provided with a hole 151a for coupling with the first coupling portion 113 of the bobbin 110 by soldering or a conductive adhesive member, and the first A hole 152a for coupling with the first coupling portion 144 of the housing 140 may be provided in the outer frame 152.

Referring to FIG. 5, the lower elastic member 160 may include elastic members divided or separated into two or more, and may be combined with the bobbin 110. For example, the elastic members may be expressed as “lower elastic members”, “elastic units” or “springs”.

For example, the lower elastic member 160 may include first and second elastic members 160-1 and 160-2 spaced apart from each other, and the first and second elastic members 160-1 and 160- 2) can be electrically separated from each other.

The first coil 120 may be electrically connected to the first and second elastic members 160-1 to 160-2. For example, one end (or the first end) of the first coil 120 may be combined with the first elastic member 160-1, and the other end (or the second end) of the second coil 120 may have the second elasticity. It may be combined with the member 160-2.

Each of the first and second elastic members 160-1 and 160-2 includes a second inner frame 161 coupled with a lower portion of the bobbin 110, and a second outer frame coupled with a lower portion of the housing 140 ( 162), and a second frame connecting portion 163 connecting the second inner frame 161 and the second outer frame 162.

The second inner frame 161 of the lower elastic member 160 may be provided with a hole 161a for coupling with the second coupling portion 117 of the bobbin 110 by soldering or a conductive adhesive member, and the second The outer frame 162 may be provided with a hole 162a for engaging with the second coupling portion 147 of the housing 140.

For example, at one end of the second inner frame 161 of the first elastic member 160-1, a first bonding portion 15a (or “first bonding region”) to which one end of the first coil 120 is coupled is provided. A second bonding portion 15b, or a "second bonding region," to which the other end of the first coil 120 is coupled to one end of the second inner frame 161 of the second elastic member 160-2. ") can be provided.

For example, by soldering or a conductive member, one end of the first coil 120 may be coupled to the first bonding portion 15a of the inner frame 161 of the first elastic member 160-1, and the first coil The other end of 120 may be coupled to the second bonding portion 15b of the inner frame 161 of the second elastic member 160-2.

The reason why the first and second bonding portions 15a and 15b are provided on the second inner frame 161 is that the second inner frame 161 is closer to the bobbin 110 than the second outer frame 163, This is to make bonding with the first coil 120 easier.

For example, guide grooves for guiding one end and the other end of the first coil 120 may be provided in the first and second bonding portions 15a and 15b.

For the above-described first and second bonding portions 15a and 15b, the term “bonding portion” may be used interchangeably with the term pad portion, connection terminal portion, solder portion, or electrode portion.

The upper elastic member 150 and the lower elastic member 160 may be implemented as leaf springs, but are not limited thereto, and may be implemented as a coil spring, suspension wire, or the like.

Each of the first and second frame connection parts 153 and 163 may be formed to be bent or curved (or curved) at least once to form a pattern having a predetermined shape. The bobbin 110 may be elastically (or elastically) supported in the first direction and/or the downward movement through the position change and the micro-deformation of the first and second frame connection parts 153 and 163.

For example, in order to prevent the oscillation phenomenon when the bobbin 110 moves, a damper (between the first frame connecting portion 153 of the upper elastic member 150 and the upper surface of the bobbin 110 (for example, the first escape groove 112a)) damper). Alternatively, a damper (not shown) may also be disposed between the second frame connecting portion 163 of the lower elastic member 160 and the lower surface of the bobbin 110 (eg, the second escape groove 112b).

Or, for example, a damper may be applied to a coupling portion of each of the bobbin 110 and the housing 140 and the upper elastic member 150, or a coupling portion of each of the bobbin 110 and the housing 140 and the lower elastic member 160. Can. For example, the damper may be silicone in the form of a gel.

For example, the first and second elastic members 160-1 and 160-2 may be separated or separated from each other at the first side 141-1 and the second side 141-2 of the housing 140. .

The first elastic member 160-1 is connected to the outer surface of the second outer frame 162 of the first elastic member 160-1, and the second outer frame 163 of the first elastic member 160-1 ) May include a first connection terminal 164-1 bent and extended in a direction toward the base 210.

In addition, the second elastic member 160-2 is connected to the outer surface of the second outer frame 162 of the second elastic member 160-2, and the second outer frame of the second elastic member 160-2 ( It may include a second connection terminal (164-2) bent in the direction toward the base 210 in 163 extends.

For example, the first connection terminal 164-1 of the first elastic member 160-1 is from the second outer frame 162 of the first elastic member 160-1 to the first outer surface of the base 210. Can be extended. In addition, the second connection terminal 164-2 of the second elastic member 160-2 extends from the second outer frame 162 of the second elastic member 160-2 to the first outer surface of the base 210. Can be.

For example, the first and second connection terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 are spaced apart from each other on the first outer surface of the base 210. It can be arranged, it can be in contact with the first outer surface of the base 210.

For example, the first connection terminal 164-1 of the first elastic member 160-1 may be disposed, seated, or inserted into the first depression 52a provided in the base 210. In addition, the second connection terminal 164-2 of the second elastic member 160-2 may be disposed, seated, or inserted into the second depression 52b provided in the base 210. Here, the depression may be expressed by replacing it with "home".

The first and second connection terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 may be exposed from the base 210, and the first and second The two connection terminals 164-1 and 164-2 may be electrically separated from each other.

For example, an inner surface of the first connection terminal 164-1 disposed in the first recessed portion 52a of the base 210 may contact one surface (eg, a bottom surface) of the first recessed portion 52a, The outer surface of the first connection terminal 164-1 may be exposed from the outer surface of the base 210 (eg, the first outer surface). The outer surface of the first connection terminal 164-1 may be an opposite surface to the inner surface of the first connection terminal 164-1.

In addition, the inner surface of the second connection terminal 164-2 disposed in the second recessed portion 52b of the base 210 may contact one surface (eg, a bottom surface) of the second recessed portion 52b, and 2 The outer surface of the connection terminal 164-2 may be exposed from the outer surface of the base 210 (eg, the first outer surface). The outer surface of the second connection terminal 164-2 may be an opposite surface to the inner surface of the second connection terminal 164-2.

For example, the lower end of each of the first and second connection terminals 164-1 and 164-2 may be exposed from the lower surface of the base 210.

The depth of the depressions 52a, 52b may be greater than the thickness of the connection terminals 164-1, 164-2, and the depths of the connection terminals 164-1, 164-2 disposed in the depressions 52a, 52b. The outer surface may not protrude out of the recesses 52a and 52b, but is not limited thereto, and in other embodiments, the outer surface of the connection terminals 164-1 and 164-2 is out of the recesses 52a and 52b. It may protrude.

4A and 5, the first elastic member 160-1 and the second elastic member 160-2 may be disposed to face each other in the first axis direction (eg, the X axis direction).

For example, the first elastic member 160-1 includes one side of the first side 218a of the base 210, one side of the second side of the base 210, and a third side of the base 210, the base 210. ) May be disposed on the first corner portion 218b1 and the third corner portion of the base 210.

For example, the second side of the base 210 may face the first side 218a of the base 210 in a second axis direction (eg, Y-axis direction), and the third side of the base 210 may be a base. It may be disposed between the first side portion 218a and the second side portion 210, and the first corner portion 218b1 of the base 210 may include a first side portion 218a and a third side portion of the base 210. One side may be connected, and the third corner portion of the base 210 may connect the second side of the base 210 and the other side of the third side of the base 210. The second axis direction may be perpendicular to the first axis direction.

For example, the second elastic member 160-2 includes the other side of the first side 218a of the base 210, the other side of the second side of the base 210, the fourth side of the base 210, and the base 210 ) May be disposed on the second corner portion 218b2 and the fourth corner portion of the base 210.

For example, the fourth side of the base 210 may face the third side of the base 210 in the first axis direction, and the second corner portion 218b2 of the base 210 may be the first side of the base 210. The side 218a and one side of the fourth side of the base 210 may be connected, and the fourth corner portion of the base 210 may connect the second side of the base 210 and the other side of the fourth side of the base 210. Can.

For example, the first and second connection terminals 164-1 and 164-2 and the first to third terminals 81a and 81b may be disposed on the first side 218a of the base 210. The first terminal 81 may be disposed to extend to the first corner portion 218b1 of the base 210, and the third terminal 83 may be disposed to extend to the second corner portion 218b2 of the base 210. Can be.

The first and second connection terminals 164-1 and 164-2 may be electrically connected to external wirings or external elements by a conductive adhesive member (eg, soldering) in order to supply power or a driving signal from the outside. have.

If the solder bonded to the first and second connection terminals 164-1 and 164-2 protrudes outside the outer surface of the base 210, the first and second connection terminals 164-1 , 164-2) may prevent contact or collision between the solder bonded to the cover member 300, and thereby may cause an electrical short circuit or disconnection. In the embodiment, the depths of the depressions 52a and 52b are sufficiently secured so that the solder bonded to the connection terminals 164-1 and 164-2 does not protrude out of the outer surface of the base 210. Short circuit or disconnection can be prevented.

Also, the first and second connection terminals 164-1 and 164-2 are corners of the housing 140 adjacent to the first side 141-1 of the housing 140 and/or the first side 141-1 of the housing 140. It may be disposed on the second outer frame 162 of the first and second elastic members 160-1 and 160-2 disposed under the portions 142-1 and 142-2. And the first and second bonding portions 15a and 15b to which the first coil 120 is coupled are disposed under the side of the bobbin 110 corresponding to the second side 141-2 of the housing 140. The first and second elastic members 160-1 and 160-2 may be disposed on the first inner frame 151.

As such, the first and second bonding portions 15a and 15b may be arranged to be spaced apart from the first and second connection terminals 164-1 and 164-2. When soldering is performed to the first and second connection terminals 164-1 and 164-2 for electrical connection with the outside, the first coil 120 and the first and second bonding parts due to heat caused by soldering The solder connecting the 15a and 15b can be prevented from melting, and the electrical connection between the first coil 120 and the first and second elastic members 160-1 and 160-2 can be prevented from being broken. have.

For the above-described first and second connection terminals 164-1 and 164-2, the term “connection terminal” may be used interchangeably with the terms pad portion, bonding portion, solder portion, or electrode portion.

The first and second connection terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2 may be electrically connected to the first coil 120, and the first and second Power or driving signals for driving the first coil 120 may be provided to the second connection terminals 164-1 and 164-2.

In FIG. 5, the first connection terminal 164-1 is formed integrally with the first elastic member 160-1, and the second connection terminal 164-2 is integrally formed with the second elastic member 160-2. It is formed, but is not limited thereto. In another embodiment, the first connection terminal may be disposed on the first outer surface of the base 210 in a separate configuration from the first elastic member, and the second connection terminal may be disposed on the base 210 in a separate configuration from the first elastic member. ), the first elastic member and the first connection terminal may be connected by solder, and the second elastic member and the second connection terminal may be connected by solder.

Next, the base 210 will be described.

The base 210 is coupled to the housing 140 and may form an accommodating space of the bobbin 110 and the housing 140 together with the cover member 300. The base 210 may have an opening 21 corresponding to an opening of the bobbin 110, and/or an opening of the housing 140, and a shape matching or corresponding to the cover member 300, for example, a rectangular shape Can be

When the base 210 is adhesively fixed to the cover member 300, the step 210 may be provided at the bottom of the outer surface of the base 210 to which the adhesive can be applied. At this time, the stepped 211 may guide the cover member 300 coupled to the upper side, and may face the lower end of the side plate 302 of the cover member 300. An adhesive member or/and a sealing member may be disposed or applied between the lower end of the side plate 302 of the base 210 and the stepped 211 of the base 210.

The base 210 may be disposed under the bobbin 110 and the housing 140.

For example, the base 210 may be disposed under the lower elastic member 160.

The base 210 may include protrusions 216a to 216d protruding a predetermined height in each of the four corners or corner portions. The protrusions 216a to 216d of the base 210 may have a polygonal column shape protruding from the upper surface 211a of the base 210 so as to be perpendicular to the upper surface 211a of the base 210, but are not limited thereto.

The protrusions 216a to 216d of the base 210 may be inserted, fastened, or coupled to the guide groove 148 of the housing 140 by an adhesive member such as epoxy or silicone.

When an external impact occurs, in order to prevent the bottom or bottom of the bobbin 210 from directly colliding with the top surface 211a of the base 210, the base 210 may include a stopper 23 protruding from the top surface 211a. May be, the stopper 23 of the base 210 may be disposed corresponding to the protrusions 216a to 216d of the base 210, but is not limited thereto.

In order to avoid spatial interference between the bobbin 110 and the lower elastic member 160, the stopper 23 of the base 210 includes first and second elastic members 160-1 and 160- coupled to the base 210. 2) (for example, may be positioned higher than the second frame connecting portion 163).

The base 210 may include a seating portion 25 provided between the opening 21 and the outer surface of the base 210 to arrange the second sensing coil 170b.

The seating portion 25 of the base 210 may be a groove shape recessed from the upper surface 211a of the base 210, but is not limited thereto, and the second sensing coil surrounding the opening 21 of the base 210 A form in which the 170 can be arranged (for example, a groove or projection) is sufficient.

Referring to FIG. 7, a first groove 31a for disposing at least a portion of the first terminal 81 and a second groove for disposing at least a portion of the second terminal 82 are disposed on an upper surface of the base 210 ( 31b), and a third groove 31c in which at least a portion of the third terminal 83 is disposed may be formed.

For example, the first to third grooves 31a to 31c may be formed between the opening 21 of the base 210 and the outer surface of the base 210, where the outer surface of the base 210 is in the optical axis direction or It may be an outer surface of the first side of the base 210 corresponding to the first side 141-1 of the housing 140 in the first direction. Alternatively, the outer surface of the base 210 corresponds to the first side portion 141-1 of the housing 140 in the optical axis direction or the first direction, and the bases corresponding to the first and second corner portions 142-1 and 142-2 ( It may be an outer side surface of the first side portion 218a of 210 and the first and second corner portions 218b1 and 218b2.

The base 210 includes sides corresponding to the sides 141-1 to 141-4 of the housing 140 and corner portions corresponding to the corner portions 142-1 to 142-4 of the housing 140. can do.

For example, the base 210 may be a side (eg, 218a) corresponding to or opposite to a side (eg, 141-1) of the housing 140, and a corner (eg, 142-1, 142-2) of the housing 140. ), or corner portions (eg, 218b1, 218b2) corresponding to or facing each other.

For example, first and second depressions 52a and 52b may be formed on the outer side 208 of the first side (eg, 218a) of the base 210.

For example, each of the first and second depressions 52a and 52b may include an upper opening that opens to the upper surface of the base 210 and a lower opening that opens to the lower surface of the base 210.

Next, the first terminal 81 and the second terminal 82 will be described.

Referring to FIG. 9, the first terminal 81 may be disposed on the base 210, or coupled or connected to the base 210, or supported by the base 210. For example, the first terminal 81 may be disposed on the first side portion 218a and the first corner portion 218b1 of the base 210.

The first terminal 81 may include a body 81a and an extension portion 8c1 extending from the body 81a.

The body 81a may include a first portion 8a1 and a second portion 8b1.

A portion of the body 81a may be exposed from the top surface of the base 210, and another portion of the body 81a may be bent from a portion of the body 81a. Also, at least one region of the other portion of the body 81a may be exposed to the side surface of the base 210 (or the first outer surface 208).

The first portion 8a1 of the first terminal 81 may be exposed from the top surface of the base 210.

The second portion 8b1 of the first terminal 81 is connected to one end of the first portion 8a1, and at one end of the first portion 8a1, the bottom direction of the base 210 or the side surface of the base 210 ( Or a first outer surface). The width W2 of the other end of the first portion 8a1 of the first terminal 81 may be smaller than the width W11 of one end of the first portion 8a1 (W2<W11).

Further, for example, the body 81a of the first terminal 81 may include a bent portion 8a11 connecting the first portion 8a1 and the second portion 8b1. The bent portion 8a11 may have a rounded shape, but is not limited thereto, and may have an angular shape in other embodiments.

The bent portion 8a11 may be disposed inside the base 210 and may not be exposed from the base 210.

For example, the cabinet between the first portion 8a1 and the second portion 8b1 may be a right angle, but is not limited thereto, and in other embodiments, the cabinet may be an acute angle or an obtuse angle.

For example, the second portion 8b1 of the first terminal 81 may be extended in a downward direction in one region of the first portion 8a1.

The extension portion 8c1 may extend in a direction from one side of the body 81a toward the first corner portion 218b1 of the base 210.

For example, the extension portion 8c1 may extend in a direction from the first portion 81a of the body 81a toward the first corner portion 218b1 of the base 210.

The extension portion 8c1 includes at least one of horizontal extension portions Q1, Q3, Q4, and Q6 extending in the horizontal direction, vertical extension portions Q2, Q5 extending in the optical axis direction, and bending portions B1 to B5. It can contain. Here, the horizontal direction is parallel to a plane perpendicular to the optical axis OA and the first horizontal direction Y1 toward the first corner portion 218b1 of the base 210 from the first portion 8a1 of the first terminal 81 It can contain as. In addition, the horizontal direction may further include a second horizontal direction Y2 parallel to a plane perpendicular to the optical axis OA, perpendicular to the first horizontal direction Y1, and toward the outer surface 208 of the base 210. have. In addition, the horizontal direction may further include a direction (not shown) that is parallel to a plane perpendicular to the optical axis OA and inclined by a predetermined angle with the first horizontal direction Y1.

For example, the extension portion 8c1 of the first terminal 81 is a first extension portion Q1 extending in a first horizontal direction from one side of the first portion 8a1, and a downward direction from the first extension portion Q1. The first bending part (B1) is bent, the second extension part (Q2) extending in the downward direction from the first bending part (B1), the second bending part is bent in the first horizontal direction in the second extension part (Q2) The outer surface of the first side portion 218a of the base 210 in the third extension portion Q3, the third extension portion Q3 extending in the first horizontal direction from the second portion B2, the second bending portion B2, The third bent portion (B3) bent to, the fourth bent portion (Q4) extending in the second horizontal direction from the third bent portion (B3), the fourth bent in the upward direction from the fourth extension portion (Q4) The fifth extension portion B5 is bent in the third horizontal direction Y3 from the fifth extension portion Q5, the fifth extension portion Q5 extending in the upward direction from the fourth portion B4 and the fourth bending portion B4. ), and a sixth extension Q6 extending from the fifth bent portion B5 in the third horizontal direction Y3. The third horizontal direction Y3 may be opposite to the second horizontal direction Y2.

The extension 8c1 may be disposed inside the base 210, and at least a portion of the extension 8c1 may be exposed from the base 210. For example, the extension portion 8c1 may be disposed inside the base 210, and the end (or one end) Q6 of the extension portion 8c1 may be exposed from the base 210. For example, the extension portion 8c1 may be disposed in the first side portion 218a and the first corner portion 218b1 of the base 210, and a portion of the extension portion 8c1 may be a first corner portion of the base 210 (218b1)) may be disposed within the first protrusion 216a, and the end (or one end) Q6 of the extension 8c1 may be exposed from the top surface of the protrusion 216a.

An end (or one end) Q6 of the extension portion 8c1 exposed from the base 210 by soldering or a conductive adhesive member may be coupled to one end 170a1 of the first sensing coil 170a (see FIG. 10A ). .

The extension 8c1 of the first terminal 81 extends for electrical coupling with one end 170a1 of the first sensing coil 170a, and is disposed in the first protrusion 216a of the base 210, thereby making the base ( 210) can be improved, and the extension can be protected by impact or pressure.

The first portion 8a1 of the first terminal 81 is connected to the first region S1 connected to the second portion 8b1 and one side of the first region S1 and spaced apart from the second portion 8b1 It may include a second region (S2).

For example, the second region S2 of the first portion 8a1 as viewed from above may be a quadrangular shape, but is not limited thereto, and may have a trapezoidal shape, but is not limited thereto.

The width W2 of the second region S2 may be smaller than the width W11 of the first region S1. Also, for example, the width W11 of the first region S1 may be the same as the width W12 of the second portion 8b1 (W11=W12). In another embodiment, W11>W12 or W11<W12.

The first portion 8a1 of the first terminal 81 may include a second region S2 whose width decreases as it moves away from the first region S1.

The width W3 of the extension 8c1 of the first terminal 81 may be smaller than the width W11 of the first region S1 of the first portion 8a1 (W3<W11). Also, the width W3 of the extension 8c1 of the first terminal 81 may be greater than or equal to the width W2 of the second area S2 of the first portion 8a1 (W3≥W2).

The contact area or the coupling area between the first terminal 81 and the base 210 may be increased by the second region S2 of the first terminal 81, and thereby the first terminal 81 and the base 210 ) Can be improved.

The second terminal 82 may be spaced apart from the first terminal 81 and disposed on the base 210 or coupled or connected to the base 210 or supported by the base 210. For example, the second terminal 82 may be disposed on the first side 218a of the base 210, and may be disposed between the first terminal 81 and the third terminal 83.

The second terminal 82 may include a first portion 8a2 and a second portion 8b2.

At least a portion of the upper surface of the first portion 8a2 of the second terminal 82 may be exposed from the upper surface of the base 210. At least a portion of the upper surface of the first portion 8a2 of the second terminal 82 exposed to the upper surface of the base 210 by soldering or a conductive adhesive member, one end 170b1 of the second sensing coil 170b, see FIG. 10A ) May be combined.

The second portion 8b2 of the second terminal 82 is connected to the first portion 8a2, and in the first portion 8a2, the lower surface direction of the base 210 or the side surface of the base 210 (or other than the first) Side).

Also, for example, the second terminal 82 may include a bent portion 8b11 connecting the first portion 8a2 and the second portion 8b2. The bent portion 8b11 may have a rounded shape, but is not limited thereto, and may have an angular shape in other embodiments.

The bent portion 8b11 may be disposed inside the base 210 and may not be exposed from the base 210.

For example, the cabinet between the first portion 8a2 and the second portion 8b2 may be a right angle, but is not limited thereto, and in other embodiments, the cabinet between the first portion and the second portion of the second terminal is an acute angle. Or it may be an obtuse angle.

For example, the second portion 8b2 of the second terminal 82 may be extended in a downward direction in one region of the first portion 8a2.

The first portion 8a2 of the second terminal 82 may include a first region having a width equal to the width of the second portion 8b2.

For example, the width of the first region S3 of the second terminal 82 may be the same as the width of the second portion 8b2. In another embodiment, the width of the first region S3 of the second terminal 82 may be larger or smaller than the width of the second portion 8b2 of the second terminal 82. The first region S3 of the second terminal 82 may be a region adjacent to or in contact with the second portion 81b.

The second terminal 82 may further include a second region S4 whose width gradually decreases as it moves away from the first region S3. The second region S4 may be spaced apart from the second portion 8b2. For example, the width of the second region S4 of the second terminal 82 may be smaller than the width of the first region S3 of the second terminal 82.

For example, the second region S4 of the first portion 8a2 as viewed from above may be a quadrangular shape, but is not limited thereto, and may have a trapezoidal shape, but is not limited thereto.

For example, the width of the first region S3 of the second terminal 82 may be the same as the width of the first region S1 of the first terminal 81, but is not limited thereto. May be different.

The contact area or the coupling area between the second terminal 82 and the base 210 may be increased by the second region S4 of the second terminal 82, and thereby the second terminal 82 and the base 210 ) Can be improved.

The third terminal 81 may be disposed on the base 210, or coupled or connected to the base 210, or supported by the base 210. For example, the third terminal 81 may be disposed on the first side portion 218a and the second corner portion 218b2 of the base 210.

The third terminal 83 may include a body 83a and an extension portion 8c2 extending from the body 83a. For example, the extension 8c2 may extend from the first side (or first side) of the body 83a.

At least a portion of the upper surface of the body 83a of the third terminal 83 may be exposed from the upper surface of the base 210, and soldered or at least part of the upper surface of the body 83a of the exposed third terminal 83 The other end (170b2, see FIG. 10A) of the second sensing coil 170b may be coupled by a conductive adhesive member.

In FIG. 8, the body 83a of the third terminal 83 does not include a portion bent toward the side (or first outer surface) of the base 210, but in another embodiment, the body 83a of the body of the third terminal 83 At least a portion of the base 210 may be bent to a side (or first outer surface 208).

The upper surface of the body 83a may include a first region 8a3 exposed from the upper surface of the base 210.

In addition, the third terminal 81 extends from the second side (or the second side) of the body 83a toward the inner surface of the base 210 and protrudes from the first protrusion R1 and the body 83a. A second protrusion extending from the third side (or third side) of the body 83a located on the opposite side of the two side (or second side) toward the first outer side 208 of the base 210 ( R2).

The first protrusion R1 may be exposed from the base 210, and the second protrusion R2 may be disposed inside the base 210. The second protrusion R2 increases the contact area between the body 83a of the third terminal 83 and the base 210 to improve the bonding force between the two. To this end, the width of the second protrusion R2 may be smaller than the width W4 of the first area 8a3 of the body 83a and larger than the width of the first protrusion R1, but is not limited thereto.

The extension 8c3 of the third terminal 83 may extend in a direction from the first side (or first side) of the body 83a toward the second corner portion 218b2 of the base 210.

The extension 8c3 of the third terminal 83 is one of the horizontal extensions P1, P2, and P4 extending in the horizontal direction, the vertical extension P3 extending in the optical axis direction, and the bent portions B6 to B8. It may include at least one.

Here, the horizontal direction is parallel to the plane perpendicular to the optical axis OA, and the second corner portion 218b2 of the base 210 is disposed on the first side (or first side) of the body 83a of the third terminal 83. It may be included in the fourth horizontal direction Y4. In addition, the horizontal direction may further include the second horizontal direction Y2 described above.

For example, the extension portion 8c2 of the third terminal 83 may include a first extension portion P1, a first extension portion extending from the first side (or first side surface) of the body 83a in the fourth horizontal direction Y4. The first bent portion B6 bent from the extension portion P1 to the first outer surface 208 of the first side portion 218a of the base 210, and the second horizontal direction Y2 from the first bent portion B6 ) Extending from the second extension portion (P2), the second extension portion (P2), the second bending portion (B7) bent in the upward direction, the second bending portion (B7) extending from the third extension portion (P3), a third bent portion (B8) bent in the second horizontal direction (Y2) in the third extension portion (P3), and a third bent portion (B8) extending in the second horizontal direction (Y2) 4 may include an extension (P4).

For example, the sixth extension Q6 which is the end of the first terminal 81 and the fourth extension P4 that is the end of the third terminal 83 may extend in opposite directions.

For example, the first terminal 81 includes at least one horizontal extension (Q1, Q3, Q4, Q6) extending in a horizontal direction and at least one vertical extension (Q2, Q5) extending in a vertical direction (or an optical axis direction). ).

In addition, for example, the third terminal 83 includes at least one horizontal extension P1, P2, and P4 extending in a horizontal direction and at least one vertical extension P3 extending in a vertical direction (or an optical axis direction). can do.

For example, the end Q6 of the first terminal 81 may be bent at one end of the at least one vertical extension and extend in the horizontal direction Y3, and the end (eg, P4) of the third terminal 83 may be at least. One end of the vertical extension (eg, P3) may be bent to extend in the opposite direction (Y2) to the horizontal direction (Y3) where the end (Q6) of the first terminal 81 extends.

The extension 8c2 of the third terminal 83 may be disposed inside the base 210, and at least a portion of the extension 8c2 may be exposed from the base 210. For example, the extension portion 8c2 of the third terminal 83 may be disposed inside the base 210, and the end (or one end) P4 of the extension portion 8c2 may be exposed from the base 210. have.

For example, the extension portion 8c2 of the third terminal 83 may be disposed within the first side portion 218a and the second corner portion 218b2 of the base 210, and a portion of the extension portion 8c2 may be disposed on the base ( 210 may be disposed within the second protrusion 216b disposed at the second corner portion 218b2, and the end (or one end) P4 of the extension 8c2 may be exposed from the top surface of the protrusion 216b. have.

The other end 170a2 of the first sensing coil 170a is shown at the end (or one end) P4 of the extension 8c2 of the third terminal 83 exposed from the base 210 by soldering or a conductive adhesive member. 10a).

The extension 8c2 of the third terminal 83 extends for electrical coupling with the other end 170a2 of the first sensing coil 170a, and is disposed in the protrusion 216 of the base 210, thereby making the base 210 It is possible to improve the bonding force with, and the extension portion 8c2 may be protected by impact or pressure.

The width W5 of the extension 8c2 of the third terminal 83 may be smaller than the width W4 of the body 83a (or the first region 8a3. Also, the extension of the third terminal 83) The width W5 of (8c2) may be the same as the width (W3) of the extension 8c1 of the first terminal 81, but is not limited thereto, and in other embodiments, both may be different.

For example, the first portion 8a1 of the first terminal 81, the first portion 8a2 of the second terminal 82, and the body 8a3 of the third terminal 83 are the second sensing coil 170b. And in the optical axis direction. In another embodiment, at least one of the first portion 8a1 of the first terminal 81, the first portion 8a2 of the second terminal 82, and the body 8a3 of the third terminal 83 is second. The sensing coil 170b may overlap the optical axis direction.

In addition, the extension portion 8c1 of the first terminal 81 and the extension portion 8c2 of the third terminal 83 may overlap the second sensing coil 170b in the optical axis direction.

Also, the second portion 8b1 of the first terminal 81 and the second portion 8b2 of the second terminal 82 may not overlap with the second sensing coil 170b in the optical axis direction.

Also, for example, the first and second connection terminals 164-1 and 164-2 may not overlap the second sensing coil 170b in the optical axis direction.

For example, the second portion 8b1 of the first terminal 81, the second portion 8b2 of the second terminal 82, and the first and second connection terminals 164-1 and 164-2 are the second It may be located on the outside of the sensing coil (170b). Here, the outer side of the second sensing coil 170b may be the other side of the side where the center of the base 210 is located based on the second sensing coil 170b.

The thickness of the first portion 8a1 of the first terminal 81, the thickness of the second portion 8b1, and the thickness of the extension portion 8c1 may be the same, but are not limited thereto, and the first terminal ( At least one of the thickness of the first portion 8a1 of 81, the thickness of the second portion 8b1, and the thickness of the extension 8c1 may be different.

In addition, the thickness of the first portion 8a2 of the second terminal 82, the thickness of the second portion 8b2, and the thickness of the third portion 8c2 may be the same, but are not limited thereto, and the second At least one of the thickness of the first portion 8a2 of the terminal 82, the thickness of the second portion 8b2, and the thickness of the third portion 8c2 may be different.

In addition, the thickness of the body 83a of the third terminal 83 and the thickness of the extension portion 8c2 may be the same, but are not limited thereto, and in other embodiments, both may be different.

In addition, the thickness of the first terminal 81, the second terminal 82, and the third terminal 83 may be the same, but is not limited thereto.

6 and 10A, the first solder 71 may couple the upper surface of the body 82a of the second terminal 82 with one end 170b1 of the second sensing coil 170b. For example, one end 170b1 of the second sensing coil 170b by the first solder 71 may include a first region S1 and a second region S2 of the first portion 8a1 of the second terminal 82. It can be combined with at least one of.

Also, for example, the second solder 72 may combine the upper surface of the body 83a of the third terminal 83 with the other end 170b2 of the second sensing coil 170b. In another embodiment, conductive adhesive may be used instead of the first and second solders 71 and 72.

The base 210 may be made of an injection material, and at least a portion of each of the first terminal 81, the second terminal 82, and the third terminal 83 may be located inside the base 210 by an insert injection process. Can. In this sense, each of the first to third terminals 81 to 83 may be referred to as an “insert terminal”.

However, at least a part of the upper surface of each body 82a, 83a of the second and third terminals 82, 83 is exposed from the upper surface of the base 210 to be coupled with the second sensing coil 170b through soldering. Can be.

In addition, the end (Q6) of the extension portion (8c1) of the first terminal (81) of the first projection (216a) of the base (210) to engage with one end (170a1) of the first sensing coil (170a) through soldering It can be exposed to the top. In addition, the end (P4) of the extension portion (8c2) of the third terminal (83) of the second projection (216b) of the base (210) to engage with the other end (170a2) of the first sensing coil (170a) through soldering It can be exposed to the top.

Also, at least a portion of each of the second portions 8b1 and 8b2 of the first and second terminals 81 and 82 has an outer surface 208 of the base 210 for electrical connection (eg soldering) with the outside. Can be exposed from.

Each of the first to third terminals 81, 82, and 83 may be made of a conductor, for example, metal. For example, each of the first to third terminals 81, 82, and 83 may be made of copper, gold, silver, or nickel, and an alloy including at least one of them.

In addition, in the first to third terminals, the terminal may be used interchangeably with the terms "pad", "pad portion", "connection terminal portion", "solder portion", or "electrode portion".

6 to 9, the center of the opening 21 of the base 210 is based on the bottom of the first and second depressions 52a and 52b on the first outer surface 208 of the base 210. In the projecting portion 51 protruding in the direction of the first outer surface 208 of the base 210 may be provided.

For example, the protrusion 51 may be disposed between the first depression 52a and the second depression 52b.

For example, the bent portion 8a11 of the first terminal 81 and the bent portion 8b11 of the second terminal 82 may be located in the protrusion 51a of the base 210. Since the bent portions 8a11 and 8b11 are located in the protruding portion 51, the bent portions 8a11 and 8b11 of the first and second terminals 81 and 82 can be protected from external impact, and the bent portions 8a11, 8b11) and the base 210 may improve the bonding force.

Also, for example, a region of the second portion 8b1, 8b2 of each of the first and second terminals 81, 82 exposed from the first outer surface 208 of the base 210 is below the protrusion 51. Can be located. Due to this, it is possible to facilitate delivery between the terminals of the circuit board of the camera module and the first and second terminals 81 and 82 of the lens driving apparatus 100 according to the embodiment.

The first connection terminal 164-1 of the first elastic member 160-1, the second connection terminal 164-2 of the second elastic member 160-2, and the second portion of the first terminal 81 8b1 and the second portion 8b2 of the second terminal 82 may be disposed on one side (eg, 218a) of the base 210.

For example, the first connection terminal 164-1, the second connection terminal 164-2, the second portion 8b1 of the first terminal 81, and the second portion 8b2 of the second terminal 82 Silver may be disposed on the first outer surface 208 of the base 210. Due to this, for the electrical connection between the first connection terminal 164-1, the second connection terminal 164-2, and the first and second terminals 81a, 81b and an external device (eg, a circuit board) When soldering, soldering can be facilitated.

For example, the second portion 8b1 of the first terminal 81 and the second portion 8b2 of the second terminal 82 are between the first connection terminal 164-1 and the second connection terminal 164-2. Can be arranged in space.

For example, when the first outer surface of the base 210 is viewed from the front, the first connection terminal 164-1 in the direction of the second corner portion 216b from the first corner portion 216a of the base 210, The second portion 8b1 of the first terminal 81, the second portion 8b2 of the second terminal 82, and the second connection terminal 164-2 may be sequentially disposed.

Next, the second coil 170 will be described.

The second coil 170 is located on the upper side of the first coil 120, the first sensing coil 170a is disposed on the housing 140, and the first coil 120 is located on the lower side, and is disposed on the base 210. A second sensing coil 170b may be included.

10A shows a perspective view of the first sensing coil 170a and the first to third terminals 81,82,83 disposed in the housing 140, and FIG. 10B shows the first sensing disposed in the housing 140. Shows a perspective view of the first to third terminals 81, 82, 83 disposed on the coil 170a and the base 210, and FIG. 11 shows the first coil 120, the second coil 170, and the first The first to third terminals 81, 82, 83 show a plan view, FIG. 12 shows a bottom view of FIG. 9, FIG. 13 shows a cross-sectional view of the lens driving apparatus 100 in the AB direction of FIG. 2, 14 shows a separation distance between the first sensing coil 170a, the first coil 120, and the second sensing coil 170a, and FIG. 15 shows the mutual relationship between the first coil 120 and the second coil 120. It is a circuit diagram for explaining the induced voltage VL according to the action.

10A to 15, the first sensing coil 170a may be disposed below the upper elastic member 150 and may be disposed above the first coil 120.

Also, the second sensing coil 170b may be disposed under the lower elastic member 160.

For example, the second sensing coil 170b may be disposed between the lower elastic member 160 and the base 210. For example, the second sensing coil 170b may be disposed in the seating portion 25 of the base 210. In another embodiment, the second sensing coil may be arranged to wind on the outer surface of the base, and a groove or mounting groove for winding the second sensing coil may be provided on the outer surface of the base.

For example, at least a portion of the second sensing coil 170b includes a first portion 8a1 of the body 81 of the first terminal 81, a first portion 8a2 of the second terminal 82, and a third terminal It may be in contact with the body (83a) of (83), but is not limited thereto. In another embodiment, the second sensing coil 170b includes a first portion 8a1 of the body 81 of the first terminal 81, a first portion 8a2 of the second terminal 82, and a third terminal ( 83) may not be in contact with the body 83a, and may be spaced apart.

The second coil 170 may generate an induced voltage by mutual induction with the first coil 120 provided with a driving signal. The second coil 170 is for detecting the displacement of the AF moving part and may be expressed by replacing it with a “sensing coil”.

For example, the first sensing coil 170a may be disposed under the circumference of the bobbin 110. For example, the ring portion of the first sensing coil 170a in the optical axis direction may not overlap with the bobbin 110, but is not limited thereto, and in other embodiments, a portion of the ring portion of the first sensing coil 170a is It may overlap with the bobbin 110 in the optical axis direction.

Referring to FIG. 11, for example, a ring portion of the first sensing coil 170a in the optical axis direction may not overlap with a ring portion of the first coil 120. In another embodiment, the ring portion of the first sensing coil 170a in the optical axis direction may overlap the ring portion of the first coil 120.

The ring portion of the first sensing coil 170a in the optical axis direction may overlap at least a portion of the magnets 130-1 to 130-4, but is not limited thereto, and in other embodiments, both are not overlapped in the optical axis direction. It may not.

The first sensing coil 170a may have a closed curve shape surrounding the outer surface of the housing 140, for example, a ring shape, and the second sensing coil 170b is disposed around the opening 21 of the base 210. It may have a closed curve shape, for example, a ring shape.

For example, each of the first sensing coil 170a and the second sensing coil 170b may have a ring shape wound to rotate clockwise or counterclockwise with respect to the optical axis OA.

4B and 10A, a part 170a1 of the first sensing coil 170a disposed on the side of the housing 140 is wound at least once on the first protrusion 47a of the housing 140, and It may include a first extension line (17f) extending to the end (Q6) of the extension portion (8c1) of the terminal (81).

A conductive adhesive 61a may be disposed on the ends Q6 of the first extension line 17f and the extension 8c1 of the first terminal 81. The first extension line 17f of the first sensing coil 170a and the first terminal 81 may be electrically connected to each other by the conductive adhesive 61a.

In addition, the other part 170a2 of the first sensing coil 170a disposed in the housing 140 is wound at least once on the second protrusion 47b of the housing 140, and the extension portion of the third terminal 83 is 8c2) may include a second extension line 17g extending to the end P4.

A conductive adhesive 61b may be disposed on the end P4 of the extension 8c2 of the second extension line 17g and the third terminal 83. The second extension line 17g of the first sensing coil 170a and the third terminal 83 may be electrically connected to each other by the conductive adhesive 61b.

For example, the conductive adhesive 61a may be spaced apart from the second portion 17b of the first sensing coil 170a, and the conductive adhesive 61b may be spaced apart from the fourth portion 17d of the first sensing coil 170a. Can be. Due to this, the length of the first sensing coil 170a may be further increased.

For example, the conductive adhesive 61a, 61b may be a conductive resin, such as Ag epoxy or solder.

The first sensing coil 170a may include a conductive wire (eg, a copper wire) and a covering (eg, an insulating portion) surrounding the conductive wire, and the first extension line 17f and the second of the first sensing coil 170a The conductive wire of the extension line 17g may be exposed from the coating. Also, the conductive wires of the third and fifth portions 17c and 17e of the first sensing coil 170a may be exposed from the coating. This is for electrical connection by soldering between the extensions 8c1 and 8c2 of each of the first and third terminals 81 and 83 and the first sensing coil 170a.

The first sensing coil 170a includes a first portion 17a disposed in a seating groove 141b of the housing 140, a second portion 17b wound around the first projection 47a of the housing 140, and a first The third part 17c connecting one end of the first part 17a and the second part 17b, the fourth part 17d wound around the second protrusion 47b of the housing 140, and the first part 17a ) Connecting the other end of the fourth portion and the fourth portion 17d, the fifth portion 17e, the sixth portion 17f extending from one end of the second portion 17b, and the one extending from one end of the fourth portion 17d It may include a seventh portion (17g).

For example, the sixth portion of the first sensing coil 170a may be the first extension line 17f described above, and the seventh portion of the second coil 170-1 may be the second extension line 17g described above. .

The first portion 17a, which is the main body of the first sensing coil 170a, may be a portion that generates an induced voltage by mutual induction action with the first coil 120.

The second to seventh portions 17b to 17g of the first sensing coil 170a may be a single strand extending from the first portion 17a that is the main body of the first sensing coil 170a.

The reason why the part of the first sensing coil 170a is wound around the first protrusion 147a and the other part of the first sensing coil 170a is wound around the second protrusion 147b is the first sensing coil (without additional line arrangement). For soldering a part of 170a) and the extension 8c1 of the first terminal 81, and soldering another part of the first sensing coil 170a and the extension 8c2 of the third terminal 83 to be. In addition, by moving the first and second portions of the first sensing coil 170a to the first and second protrusions 47a and 47b of the housing 140 stably and securely during soldering, the movement of the first sensing coil 170a or This is to improve the solderability by preventing shaking.

Referring to FIG. 14, in the initial position of the AF movable unit (for example, the bobbin 110 ), the first sensing coil 170a is spaced apart from the first coil 120 in the upward direction by a predetermined first distance d1. The second sensing coil 170b at the initial position of the AF movable unit (for example, the bobbin 110) may be positioned spaced apart from the first coil 120 in a downward direction by a predetermined second distance d2. have. For example, each of d1 and d2 may be a distance in an optical axis (OA) direction or in a direction parallel to the optical axis.

For the accuracy of AF feedback driving and the ease of calibration for coordinate coding of the displacement of the bobbin, the induced voltage (VL) of the second coil 170 according to the displacement of the AF moving part (eg, bobbin 110) ) Requires linearity.

In order to improve this linearity, the following conditions need to be met. First, when a lens or a lens module is mounted on the bobbin 110, in the initial position of the AF movable unit (eg, the bobbin 110), the ratio (d1) of the first distance (d1) and the second distance (d2) d2) may be 1:1 to 1:1.5. Alternatively, the ratio d2:d1 of the second distance d2 and the first distance d1 may be 1:1 to 1:1.5.

For example, when a lens or a lens module is not mounted on the bobbin 110, in the initial position of the AF movable unit (eg, bobbin 110), the first distance d1 may be equal to or less than the second distance d2. have.

Second, the first number of turns N1 of the first sensing coil 170a may be the same as the second number of turns N2 of the second sensing coil 170b. Here, the number of turns may be the number of times the sensing coil is wound based on the optical axis.

For example, the ratio (N1:N2) of the first turn number N1 and the second turn number N2 may be 1:1 to 1:1.5. Alternatively, the ratio (N2:N1) of the second turn number N2 and the first turn number N1 may be 1:1 to 1:1.5.

At least a portion of the first sensing coil 170a at the initial position of the AF movable unit may overlap with at least one of the first to fourth magnets 130-1 to 130-4 in the optical axis direction, but is not limited thereto. In other embodiments, the two may not overlap each other in the optical axis direction. In addition, at least a portion of the second sensing coil 170b at the initial position of the AF movable unit may overlap with at least one of the first to fourth magnets 130-1 to 130-4 in the optical axis direction, but is not limited thereto. In other embodiments, the two may not overlap each other in the optical axis direction.

Referring to FIGS. 6 and 11, for example, the lens driving apparatus 100 includes one end 170b1 (or line of sight) of the second sensing coil 170b and a first portion 8a2 of the second terminal 82. A first solder 71 to be coupled may be included. For example, the first solder 71 may be coupled to at least one of the first region S3 and the second region S4 of the second terminal 82.

In addition, the lens driving apparatus 100 may include a second solder 72 coupling the other end 170b2 (or vertical line) of the second sensing coil 170b and the body 83a of the third terminal 83. . For example, the second solder 72 may be coupled to the first region 8a3 of the third terminal 83.

The first sensing coil 170a and the second sensing coil 170b may be connected in series by the third terminal 83, and in this sense, the third terminal 83 may be expressed by replacing it with a “connection terminal”. .

At least a portion of the second sensing coil 170b includes a first portion 8a1 of the first terminal 81, a first portion 8a2 of the second terminal 82, and a body 83a of the third terminal 83 ).

For example, at least a portion of the second sensing coil 170b is a first portion 8a1 of the first terminal 81 in the optical axis direction, a first portion 8a2 of the second terminal 82, and a third terminal 83 ) May overlap the body 83a.

Also, for example, at least a portion of the first coil 120 may include a first portion 8a1 of the first terminal 81 in the optical axis direction, a first portion 8a2 of the second terminal 82, and a third terminal 83 ) May overlap the body 83a, but is not limited thereto. In another embodiment, the first coil 120 may not overlap with the first to third terminals 81, 82, 83 in the optical axis direction.

The second sensing coil 170b may be disposed under the bobbin 110.

Each of the first and second sensing coils 170 and a 170b may include a shape corresponding to the first coil 120.

For example, the first coil 120 may include a ring portion having a circular, elliptical, or polygonal shape (eg, a square, pentagon, octagon, etc.). Each of the first and second sensing coils 170a and 170b may include a ring portion having a circular, elliptical, or polygonal shape (eg, square, pentagon, octagon, etc.).

The diameter R2 of the ring portion of the second sensing coil 170b may be larger than the diameter R1 of the ring portion of the first coil 120 (R2>R1), but is not limited thereto. R2=R1.

In addition, the diameter R3 of the ring portion of the first sensing coil 170a may be larger than the diameter R2 of the ring portion of the second sensing coil 170b, but is not limited thereto. In another embodiment, R3=R3 It may be.

For example, the diameter R1 may be the largest diameter of the inner diameter made of the inner surface of the first coil 120, and the diameter R2 may be the largest diameter of the inner diameter consisting of the inner surface of the second sensing coil 170b. , Diameter (R3) may be the maximum diameter of the inner diameter consisting of the inner surface of the first sensing coil (170b).

For example, the outer diameter of the ring portion of the second sensing coil 170b may be larger than the outer diameter of the bobbin 110, but is not limited thereto. Here, the outer diameter of the ring portion of the second sensing coil 170b may be the outer diameter of the second sensing coil 170b.

Also, when viewed from above, the first and second solders 71 and 72 may be located inside the second sensing coil 170b, and the second portion of the first and second terminals 81 and 82 The fields 8b1 and 8b2 may be located outside the second sensing coil 170b.

Also, for example, when viewed from above, the first coil 120 may include first sides 4a and first corners 4b, and the second sensing coil 170b may include second sides 5a and Two edges 5b may be included, and the first sensing coil 170a may include third sides 6a and third edges 6b.

For example, the first sides 4a of the first coil 120 and the third sides 6a of the first sensing coil 170a are the sides 141-1 to 141-4 of the housing 140 or the housing ( It may be a portion corresponding to or opposite to the magnets 130-1 to 130-4 disposed in 140). In addition, for example, the first corners 4b of the first coil 120 and the third corners 6b of the first sensing coil 170a may include corner portions 142-1 to 142-4 of the housing 140. It may be a part corresponding to or opposite to.

In addition, for example, the second sides 5a of the second sensing coil 170b correspond to or face the side of the base 210, the side of the housing 140, or the first sides 4a of the first coil 120. It can be a part. In addition, for example, the second corners 5b of the second sensing coil 170b may include corners of the base 210, corners of the housing 140, or first corners 4b of the first coil 120. It may be a part corresponding to or opposite to.

For example, when viewed from above, at least one of the second sides 5a of the second sensing coil 170b may be disposed outside or outside the first coil 120. Alternatively, when viewed from above, at least one of the second corners 5b of the second sensing coil 170b may be disposed inside the first coil 120.

For example, when viewed from a position, the first coil 120 and the second sensing coil 170b may be located inside the first sensing coil 170a.

Alternatively, for example, a portion of the second sensing coil 170b overlapping the first and second terminals 81 and 82 in the optical axis direction may overlap the portion of the first coil 120 in the optical axis direction.

In order to increase the AF driving force, the length of the first coil 120 in the optical axis direction (H1, see FIG. 14) is the length of the first sensing coil 170a in the optical axis direction (H2, see FIG. 14) and the second sensing. The length of the coil 170b in the optical axis direction (H3, see FIG. 14) may be greater. In another embodiment, the length of the first coil 120 in the optical axis direction is the same as at least one of the length in the optical axis direction of the first sensing coil 170a and the length in the optical axis direction of the second sensing coil 170b, or It may be small.

The second coil 170 may be an AF moving part, for example, an induction coil for detecting the position or displacement of the bobbin 110. For example, the second coil 170 may be implemented in a wire form, but is not limited thereto. In another embodiment, the second coil 170 may be implemented in an FPCB form or a FP (Fine Pattern) coil form.

For example, when the AF movable unit is moved by the interaction between the first coil 120 and the magnet 130 provided with a driving signal, the induced voltage due to the interaction of the first coil 120 and the second coil 170 is generated. Can occur.

The induced voltage is the first induced voltage caused by the interaction between the first coil 120 and the first sensing coil 170a, and the first induced voltage caused by the interaction between the first coil 120 and the second sensing coil 170b. It can be the sum of 2 induced voltages.

The magnitude of the induced voltage generated in the first coil 120 may be based on the displacement of the AF moving part, and the induced voltage of the first coil 120 thus generated is the first terminal 81 and the second terminal 82. It can be output through.

According to an embodiment, as the first sensing coil 170a and the second sensing coil 170b are provided, the inductance of the second coil 170 may be increased, and the magnitude of the induced voltage generated in the second coil 170 may be increased. It can be increased, thereby improving the sensing sensitivity of the second coil 170 according to the displacement of the AF moving part. As described above, the embodiment may detect the magnitude of the induced voltage generated in the second coil 170, detect the displacement of the AF moving part, and perform the AF feedback operation using the detected displacement of the AF moving part. , Due to this, it is possible to perform an accurate AF operation.

In general, the resistance value of the second coil 170, which is the sensing coil, is influenced by the temperature change around the lens driving device 100 or the lens driving device 100, and the resistance value of the sensing coil may be affected. The sensing current according to mutual induction with one coil 120 may be changed. Since the influence of the sensing current of the second coil 170 due to the temperature change may cause malfunction of AF driving, temperature compensation is necessary.

In order to facilitate this temperature compensation, it is necessary to make the resistance of the second coil 170 to be equal to or greater than a predetermined resistance value (eg, 30 Hz).

When the sensing coil is disposed only in the housing or the sensing coil is disposed only in the base, there may be limitations on the number of windings of the sensing coil and the resistance value of the sensing coil obtained accordingly due to space limitations.

According to an embodiment, as the first sensing coil 170a and the second sensing coil 170b are provided, the resistance of the second coil 170 may be increased, thereby causing the temperature of the induction voltage of the second coil 120. Compensation can be easily performed. For example, the resistance value of the second coil 170 according to the embodiment may be 1.1 to 3 times when compared with the resistance value of the first sensing coil (or the resistance value of the second sensing coil).

In general, AF (Auto Focus) feedback control requires an AF moving part, for example, a position sensor capable of detecting the displacement of the bobbin, and a separate power connection structure for driving the position sensor, thereby increasing the price of the lens driving device And manufacturing difficulties.

In addition, the linear section of the graph between the moving distance of the bobbin and the magnetic flux of the magnet sensed by the position sensor (hereinafter referred to as "first linear section") may be limited by the positional relationship between the magnet and the position sensor.

Since the embodiment does not require a separate position sensor for detecting the displacement of the bobbin 110, it is possible to reduce the cost of the lens driving device, it is possible to improve the ease of manufacturing operation.

In addition, since the induction voltage by mutual induction between the first coil 120 and the first sensing coil 170a and mutual induction between the first coil 120 and the second sensing coil 170b are used, the first Compared to the linear section, the linear section of the graph between the displacement of the bobbin 110 and the induced voltage of the second coil 170 may increase. Due to this, the embodiment can secure a wide range of linearity, improve a process defect rate, and perform more accurate AF feedback control.

If a driving signal is provided to the first coil 120 using the lower elastic member, and the voltage of the second coil 170 is received or input, the lower elastic member must include at least four elastic members separated from each other. . In addition, the four elastic members should include connection terminals for external and electrical connections, and these connection terminals may be disposed on two different outer surfaces of the base. Due to this, when soldering for electrical connection with the outside, soldering cannot be performed in one direction, and the amount of work may increase. In addition, since the lower elastic member is divided into four pieces, the work change difficulty may increase due to an increase in spring change defects.

The lens driving apparatus 100 according to the embodiment may include first and second terminals 81 and 82 which are separate components from the lower elastic member 160 in order to receive the induced voltage of the second coil 170. In addition, a third terminal 83 for connecting the first sensing coil 170a and the second sensing coil 170b in series may be provided.

And by placing the first and second terminals 81 and 82 and the connection terminals 164-1 and 164-2 of the elastic members 160-1 and 160-2 on any one outer surface 208 of the base 210, , It can reduce the amount of soldering work and improve the convenience of soldering. In addition, in the embodiment, since the lower elastic member does not need to be divided into 4 pieces, the defective rate of spring change can be improved.

Referring to FIG. 12, the first to third terminals 81, 82 and 83 and the first and second connection terminals 164-1a and 164-2a of the lower elastic member 160 are reference lines 207. It can be located inside or inside.

For example, the second portions bb1 and bb2 of the first and second terminals 81 and 82, the body 83a of the third terminal 83, and the first and second connection terminals 164-1a , 164-2a) may be located inside or inside the reference line 207.

Here, the reference line 207 is a base on which the second portions 9b1 and 9b2 of the first and second terminals 85a and 85b and the first and second connection terminals 164-1 and 164-2 are disposed. It may be an imaginary straight line connecting two corners BC1 and BC2 of the lower surface of the base 210 adjacent to the outer surface 208 of (210-1).

For example, the inside or the inside of the reference line 207 may be a side where the opening 21 of the base 210 is positioned with respect to the reference line 207.

The first to third terminals 81, 82 and 83 and the first and second connection terminals 164-1 and 164-2 may not deviate or protrude outside the reference line 207. Here, the outside of the reference line may be the inside or the opposite side of the inside of the reference line 207.

The second portions 8b1 and 8b2 of the first and second terminals 81 and 82 with respect to the reference line 207 are more inward than the first and second connection terminals 164-1 and 164-2. However, the present invention is not limited thereto, and in other embodiments, the first and second connection terminals 164-1 and 164-2 from the reference line 207 are the first and second terminals 81 and 82. ) May be located farther inward than the second portions 8b1 and 8b2. In another embodiment, the first and second connection terminals 164-1 and 164-2 from the reference line 207 and the second portions 8b1 and 8b2 of the first and second terminals 81 and 82 May be located spaced inward by the same distance.

9 or 12, the second portions 8b and 1 8b2 of the first and second terminals 81 and 82 are located between the first and second connection terminals 164-1 and 164-2. However, the present invention is not limited thereto, and in other embodiments, the first and second connection terminals 164-1 and 164-2 are second portions 8b1 of the first and second terminals 12, 82. 8b2).

In FIG. 12, the second portions 8b1 and 8b2 of the first and second terminals 81 and 82 and the first and second connection terminals 164-1 and 164-2 are the lower surface of the base 210. It does not protrude downward, but is not limited thereto.

For example, in other embodiments, a portion of the second portions 8b1 and 8b2 of the first and second terminals 81 and 82 may be exposed or protruded below the lower surface of the base 210. For example, in other embodiments, some of the first and second connection terminals 164-1 and 164-2 may be exposed or projected below the lower surface of the base 210. At this time, a part of the second portions 8b1 and 8b2 protruding downward from the lower surface of the base 210 and a part of the first and second connection terminals 164-1 and 164-2 are soldered to the camera module 200 ) May be combined with the terminals of the circuit board 800.

Referring to FIG. 15, the first sensing coil 170a may be positioned above the first coil 120, and the second sensing coil 170b may be positioned below the first coil 120. One coil 120 may be provided with a driving signal Id for generating an induced voltage.

As the first coil 120 mounted on the bobbin 110 moves upward or downward, a first induction voltage V1 may be generated in the first sensing coil 170a, and at the same time, the second sensing coil ( In 170b), a second induced voltage V2 may be generated. In addition, the induced voltage VL induced by the second coil 170 and output to the first terminal 81 and the second terminal 82 may be the sum of the first induced voltage V1 and the second induced voltage V2. have.

For example, induction voltages having polarities in the same direction may be generated in the first sensing coil 170a and the second sensing coil 170b.

For example, the winding direction of the first sensing coil 170a when proceeding from one end 170a1 of the first sensing coil 170a to the other end 170a2 of the first sensing coil 170a is the second sensing coil 170b. It may be the same as the winding direction of the second sensing coil 170b when proceeding from the other end 170b2 to the one end 170b1 of the second sensing coil 170b. For example, the winding direction of the first sensing coil 170a and the winding direction of the second sensing coil 170b may be clockwise (or counterclockwise) based on the optical axis.

This can increase the magnitude of the induced voltage according to the displacement of the bobbin 110, thereby improving the sensing sensitivity of the second coil 170.

In the above-described embodiment, both ends of the first coil 120 are connected to the first and second connection terminals 164-1 and 164-2 of the first and second elastic members 160-1 and 160-2. Electrically connected, both ends of the first sensing coil 170a are electrically connected to the first and third terminals 81,83, and both ends of the second sensing coil 170b are second and third terminals (82,83), but is not limited to this.

In another embodiment, any one of the first and second elastic members may serve as a connection terminal for connecting the first sensing coil and the second sensing coil in series.

For example, one end of the first sensing coil and one end of the second sensing coil may be coupled to the second elastic member, and the first sensing coil and the second sensing coil may be electrically connected in series. Also, one end of the first coil, the other end of the first coil, the other end of the first sensing coil, and the other end of the second sensing coil are coupled to any one of the first to third terminals, and the second elastic members. It can be electrically connected.

For example, one end of the first coil may be electrically connected to the first elastic member, the other end of the first coil may be electrically connected to the third terminal, and the other end of the first sensing coil may be electrically connected to the first terminal. The other end of the second sensing coil may be electrically connected to the second terminal, but is not limited thereto.

Meanwhile, the lens driving apparatus according to the above-described embodiment may be used in various fields, for example, a camera module or an optical device.

For example, the lens driving apparatus 100 according to the embodiment forms an image of an object in space using reflection, refraction, absorption, interference, diffraction, etc., which are characteristics of light, and aims to increase the visual power of the eye, It may be included in an optical instrument for the purpose of recording and reproducing an image by a lens, or for optical measurement, propagation or transmission of an image. For example, the optical device according to the embodiment includes a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, PDA (Personal Digital Assistants), PMP (Portable Multimedia Player) ), navigation, and the like, but is not limited thereto, and any device for taking an image or picture is possible.

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

Referring to FIG. 16, the camera module includes a lens module 400, a lens driving device 100, an adhesive member 612, a filter 610, a circuit board 800, an image sensor 810, and a connector, 840).

The lens module 400 may include a lens or a lens barrel, and may be mounted or coupled to the bobbin 110 of the lens driving device 100.

For example, the lens module 400 may include one or more lenses and a lens barrel accommodating one or more lenses. However, one configuration of the lens module is not limited to the lens barrel, and any holder structure capable of supporting one or more lenses may be used. The lens module is coupled to the lens driving device 100 and can move together with the lens driving device 100.

For example, the lens module 400 may be screwed with the lens driving device 100 as an example. The lens module 400 may be combined by the lens driving device 100 and an adhesive (not shown) as an example. Meanwhile, light passing through the lens module 400 may pass through the filter 610 and be irradiated to the image sensor 810.

The adhesive member 612 may attach or attach the base 210 of the lens driving device 100 to the circuit board 800. For example, the adhesive member 612 may be an epoxy, a thermosetting adhesive, an ultraviolet curable adhesive, or the like.

The filter 610 may serve to block light of a specific frequency band from 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. At this time, the filter 610 may be arranged to be parallel to the x-y plane.

At this time, the infrared cut filter may be formed of a film material or a glass material. As an example, the infrared filter may be formed by coating an infrared ray blocking coating material on a plate-shaped optical filter such as a cover glass for protecting an imaging surface and a cover glass.

The filter 610 may be disposed under the base 210 of the lens driving device 100.

For example, the base 210 of the lens driving apparatus 100 may be provided on the lower surface of the seating portion for the filter 610 to be seated. In another embodiment, a separate sensor base for seating the filter 610 may be provided.

The circuit board 800 may be disposed under the lens driving apparatus 100, and an image sensor 810 may be mounted on the circuit board 800. The image sensor 810 may receive an image included in light incident through the lens driving apparatus 100 and convert the received image into an electrical signal.

The image sensor 810 may be positioned such that the lens module 400 and the optical axis coincide. Through this, the image sensor may acquire light passing through the lens module 400. The image sensor 810 may output the irradiated light as an image.

The circuit board 800 may be electrically connected to the first coil 120 and the second coil 170 of the lens driving device 100.

For example, the circuit board 800 is a terminal electrically connected to the first and second connection terminals 164-1 and 164-2 of the lens driving apparatus 100 and the first and second terminals 81 and 82. It can be provided.

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

The connector 840 is electrically connected to the circuit board 800 and may have a port for electrically connecting to an external device.

Although not shown in FIG. 16, the camera module 200 further includes a motion sensor for outputting rotation angular velocity information due to movement of the camera module 200, and a control unit for controlling AF driving of the lens driving apparatus 100 You may.

17 shows a perspective view of a portable terminal 200A according to an embodiment, and FIG. 18 shows a configuration diagram of the portable terminal shown in FIG. 17.

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

The body 850 shown in FIG. 17 is a bar shape, but is not limited thereto, and two or more sub-bodies are slide-type, folder-type, and swing-type in which relative movement is possible. , It can be of various structures such as swivel type.

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 the wireless communication system or between the terminal 200A and the network where the terminal 200A is located. For example, the wireless communication unit 710 may 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 include the camera module 200 according to the embodiment.

The sensing unit 740 displays the current state of the terminal 200A, such as an open/closed state of the terminal 200A, a location of the terminal 200A, presence or absence of user contact, orientation of the terminal 200A, acceleration/deceleration of the terminal 200A, and the like. Sensing may be generated to sense and control the operation of the terminal 200A. For example, when the terminal 200A is in the form of a slide phone, it can sense whether the slide phone is opened or closed. In addition, it is responsible for sensing functions related to whether the power supply unit 790 is powered or not, and whether the interface unit 770 is coupled to an external device.

The input/output unit 750 is for generating input or output related to vision, hearing, 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 key pad 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 the 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 the display (3D display).

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

The touch screen panel 753 may convert a change in capacitance generated due to a user's touch on a specific area of the touch screen into an electrical input signal.

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

The interface unit 770 serves as a passage connecting to an external device connected to the terminal 200A. The interface unit 770 receives data from an external device, receives power, transfers it to each component inside the terminal 200A, or allows data inside the terminal 200A to be transmitted to the 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 audio I/O (Input/ Output) port, a video input/output (I/O) port, and an earphone port.

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

The control unit 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 to recognize handwriting input or picture drawing input performed on a touch screen as text and images, respectively.

The power supply unit 790 may receive external power or internal power under the control of the control unit 780 to supply power required for the operation of each component.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, and the like exemplified 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. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

Claims (10)

housing;
A bobbin disposed in the housing;
A first coil coupled with the bobbin;
A magnet disposed in the housing and facing the first coil;
A base spaced apart from the bobbin;
A lower elastic member coupled to the bobbin and including a first elastic member and a second elastic member disposed on the base;
A second coil including a first sensing coil disposed in the housing and a second sensing coil disposed in the base, and generating an induced voltage by interaction with the first coil; And
It includes a first terminal, a second terminal, and a third terminal coupled to the base and spaced apart from the first and second elastic members,
One end of the first coil is coupled to the first elastic member, the other end of the first coil is coupled to the second elastic member, one end of the first sensing coil is coupled to the first terminal, and the first 1 The other end of the sensing coil is coupled to the third terminal, one end of the second sensing coil is coupled to the second terminal, and the other end of the second sensing coil is coupled to the third terminal. According to claim 1,
The induction voltage of the second coil is a lens driving device that is output through the first and second terminals. According to claim 1,
The first coil has a ring shape surrounding the outer surface of the bobbin,
The first sensing coil has a ring shape surrounding the outer surface of the housing,
The base includes an opening, and the second sensing coil has a ring shape surrounding the opening of the base. According to claim 1,
The housing includes a first corner portion, a second corner portion, a first side portion connecting the first corner portion and the second corner portion, a first guide groove formed on an outer surface of the first corner portion, and the second corner portion. A second guide groove formed on the outer surface of the corner portion,
The base includes a first protrusion facing the first guide groove and a second protrusion facing the second guide groove,
The first to third terminals are lens driving devices disposed on the first side of the base facing the first side of the housing. According to claim 4,
The first terminal includes a first body disposed on the first side of the base and a first extension extending from the first body to the first protrusion of the base,
The second terminal includes a second body disposed on the second side of the base, and the third terminal comprises the third body disposed on the first side of the base and the third body from the third body. A lens driving device including a second extension extending to the second protrusion. The method of claim 5,
The end of the first extension is exposed from the top surface of the first protrusion of the base, and the end of the second extension is exposed from the top surface of the second protrusion of the base,
The one end of the first sensing coil is coupled to the end of the first extension, the other end of the first sensing coil is coupled to the end of the second extension,
One end of the second sensing coil is coupled to the second body of the second terminal, and the other end of the second sensing coil is coupled to the third body of the third terminal. According to claim 1,
Each of the first and second terminals includes a first portion exposed from an upper surface of the base, and a second portion connected to the first portion and bent in an outer surface direction of the first side of the base,
Each of the first and second elastic members is an inner portion coupled to a lower portion of the bobbin, an outer portion coupled to a lower portion of the housing, a connecting portion connecting the inner portion and the outer portion, and the first portion of the base connected to the outer portion. A lens driving device including a connection terminal disposed on the outer surface of one side. According to claim 1,
The winding direction of the first sensing coil when proceeding from the one end of the first sensing coil to the other end of the first sensing coil is when proceeding from the other end of the second sensing coil to the one end of the second sensing coil The same lens driving device of the winding direction of the second sensing coil. According to claim 1,
A driving signal is provided to the first coil through the connecting terminal of the first elastic member and the connecting terminal of the second elastic member, and the driving signal includes an AC signal or an AC signal and a DC signal. Lens driving device. According to claim 1,
In the initial position of the bobbin, the first separation distance in the optical axis direction between the first coil and the first sensing coil is less than or equal to the second separation distance in the optical axis direction between the first coil and the second sensing coil. Lens drive.

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