KR20200020325A - A lens moving unit, and camera module and optical instrument including the same - Google Patents

Abstract

An embodiment comprises: a housing including a first corner unit, a second corner unit, a third corner unit, and a fourth corner unit; a bobbin disposed in the housing; a coil disposed at the bobbin; a magnet facing the coil and disposed at the housing; a circuit board disposed at one side surface of the housing and comprising a position sensor; and a sensing magnet facing the position sensor and disposed at the bobbin. The magnet comprises a first magnet disposed at the first corner unit of the housing, and a second magnet disposed at the second corner unit facing the first corner unit of the housing. The position sensor is disposed closer to the third corner unit than the first corner unit. The magnet is not disposed at the third corner unit of the housing.

Description

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

Embodiments relate to a lens driving device, a camera module and an 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 the related research has been actively conducted.

The demand and production of electronic products such as smartphones and mobile phones with cameras is increasing. Mobile phone cameras are on the trend of high pixel size and miniaturization, and accordingly, actuators are also miniaturized, large diameter, and multi-functionalized. In order to implement a high resolution mobile phone camera, additional functions such as performance improvement and auto focusing, shutter shake improvement, and zoom function of the mobile phone camera are required.

The embodiment can be equipped with a large-diameter lens while reducing the size of the product, it is possible to secure a space for mounting the position sensor in the form of a driver, a lens driving device that can improve the degree of freedom of design, and including the same Provides a camera module and an optical device.

The lens driving apparatus according to the embodiment may include a housing including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion; A bobbin disposed in the housing; A coil disposed on the bobbin; A magnet disposed in the housing facing the coil; And a circuit board disposed on one side of the housing and including a position sensor; And a sensing magnet disposed in the bobbin facing the position sensor, wherein the magnet has a first magnet disposed at the first corner of the housing and the second corner facing the first corner of the housing. And a second magnet disposed in the portion, wherein the position sensor is disposed closer to the third corner portion than the first corner portion, and the magnet is not disposed at the third corner portion of the housing.

The coil may include a first coil unit facing the first magnet and a second coil unit facing the second magnet.

The lens driving device may include a first lower elastic unit, a second lower elastic unit, and a third lower elastic unit coupled to the housing and spaced apart from each other, wherein one end of the first coil unit is the first lower elastic unit. Is electrically connected to a unit, the other end of the first coil unit is electrically connected to one end of the third lower elastic unit, and one end of the second coil unit is electrically connected to one end of the second lower elastic unit, The other end of the second coil unit may be electrically connected to the other end of the third lower elastic unit.

The circuit board may be disposed between the first corner portion and the third corner portion of the housing.

The lens driving apparatus may include a lower elastic member disposed below the housing, wherein the lower elastic member includes a first lower elastic unit coupled to the third corner portion of the housing; A second lower elastic unit coupled to the third corner portion of the housing; And a third lower elastic unit coupled to the fourth corner portion of the housing facing the third corner portion of the housing, wherein the circuit board is electrically connected to the first lower elastic unit. It may include a terminal and a second terminal electrically connected to the second lower elastic unit.

The lower elastic member may not overlap at least one of the first magnet and the second magnet in an optical axis direction.

One side of the bobbin facing the one side of the housing is formed with a protrusion protruding in the direction toward the one side of the housing, the sensing magnet may be disposed on the protrusion.

A groove portion for arranging the protrusion of the bobbin may be provided at one side of the housing.

At least a portion of the sensing magnet in the one side direction of the housing in the one side of the bobbin may be reduced in width.

The bobbin may include an opening for mounting a lens, and a distance from the other side of the housing facing the one side of the housing to the center of the opening of the bobbin is at the center of the opening of the bobbin. It may be less than the distance to one side of the.

The housing is disposed between a first side portion disposed between the first corner portion and the third corner portion, a second side portion facing the first side portion of the housing, and disposed between the second corner portion and the third corner portion. A third side portion and a fourth side portion disposed between the first corner portion and the fourth corner portion, wherein a thickness of each of the third and fourth sides of the housing is greater than that of the second side portion of the housing. It may be larger than the thickness.

In another embodiment, a lens driving apparatus includes a housing including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion; A bobbin disposed in the housing; A coil disposed on the bobbin; And a magnet facing the coil and disposed in the housing, wherein the magnet has a first magnet disposed in the first corner portion of the housing and the second corner portion facing the first corner portion of the housing. And a second magnet disposed in the virtual body, wherein the third corner portion of the housing is adjacent to the first corner portion and faces the fourth corner portion, and a virtual straight line connecting the third corner portion and the fourth corner portion. Does not overlap with the magnet and the coil.

In another embodiment, a lens driving apparatus includes a housing including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion; A bobbin disposed in the housing; A coil disposed on the bobbin; A magnet disposed in the housing facing the coil; And an elastic member coupled to the bobbin and the housing, wherein the magnet has a first magnet disposed at the first corner portion of the housing and the second corner portion facing the first corner portion of the housing. And a second magnet disposed therein, wherein the third corner portion of the housing is adjacent to the first corner portion and faces the fourth corner portion, and the elastic member is coupled to the inner portion of the housing and coupled to the bobbin. An imaginary straight line connecting an outer side portion, the inner side portion and the outer side portion, and connecting the third corner portion and the fourth corner portion may not overlap the inner portion of the elastic member.

The virtual straight line connecting the third corner portion and the fourth corner portion may not overlap the connection portion.

In another embodiment, a lens driving apparatus includes a circuit board disposed between the first corner portion and the third corner portion of the housing; And a position sensor disposed on the circuit board, wherein the position sensor is disposed closer to the third corner portion than to the first corner portion of the housing, and wherein the position sensor is disposed on the third corner portion of the housing. The magnet may not be placed.

In another embodiment, a lens driving apparatus includes a cover member including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion; A bobbin disposed in the cover member; A coil disposed on the bobbin; A magnet facing the coil and disposed on the cover member; A circuit board disposed on one inner side of the cover member and including a position sensor; And a sensing magnet disposed on the bobbin facing the position sensor, wherein the magnet faces a first magnet disposed at the first corner of the cover member and the first corner of the cover member. And a second magnet disposed at a second corner portion, wherein the position sensor is disposed closer to the third corner portion than the first corner portion, and the magnet is not disposed at the third corner portion of the cover member. Can be.

The embodiment can be equipped with a large diameter lens while reducing the size of the product, it is possible to secure a space for mounting the position sensor in the form of a driver, it is possible to improve the degree of freedom of design.

1 is an exploded perspective view of a lens driving apparatus according to an embodiment.
FIG. 2 is a perspective view of the lens driving apparatus except for the cover member of FIG. 1.
3A shows a perspective view of the bobbin, first coil, and sensing magnet shown in FIG. 1.
3B shows the coupling of the bobbin, the first coil, and the sensing magnet.
4 is an enlarged view of the sensing magnet shown in FIG. 1.
5A shows a perspective view of the housing.
5B shows a perspective view of the housing and the first and second magnets.
5C shows a perspective view of a housing, first and second magnets, a position sensor, a circuit board, and a capacitor.
6A is a perspective view of a circuit board.
6B shows a position sensor and a capacitor disposed on a circuit board.
6C is a block diagram illustrating an example of the position sensor of FIG. 6B.
FIG. 7A is a cross-sectional view in the AB direction of the lens driving device shown in FIG. 2.
FIG. 7B is a cross-sectional view in the CD direction of the lens driving device shown in FIG. 2.
8A shows the upper elastic member shown in FIG. 1.
8B illustrates the lower elastic member shown in FIG. 1.
FIG. 9 is a bottom view of the lens driving apparatus except for the base in FIG. 2.
10 shows a lower elastic member, a base, and a circuit board.
11 is a conceptual diagram of an optical apparatus including a lens driving apparatus according to an embodiment.
12 is an exploded perspective view of a camera module according to an embodiment.
13 is a perspective view of a portable terminal according to an embodiment.
14 is a block diagram of the portable terminal shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

However, the technical idea of the present invention is not limited to some embodiments described, but may be embodied in various forms, and within the technical idea of the present invention, one or more of the components between the embodiments may be selectively selected. Can be combined and substituted.

In addition, the terms used in the embodiments of the present invention (including technical and scientific terms) are meanings that can be generally understood by those skilled in the art to which the present invention pertains unless clearly defined and described. Terms commonly used, such as terms defined in advance, may be interpreted in consideration of the contextual meaning of the related art.

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 this specification, the singular may also include the plural unless specifically stated otherwise, and may be combined as A, B, C when described as "at least one (or more than one) of A and B, C". It may include one or more of all possible combinations.

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

And when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only connected, coupled or connected directly to the other component, Another component between the other components may include 'connected', 'coupled' or 'connected'. In addition, when described as being formed or disposed on the "top" or "bottom" of each component, the top (bottom) or the bottom (bottom) is not only one when the two components are in direct contact with each other, but also one. It also includes a case where the above-described further components are formed or disposed between two components. In addition, when expressed as "up (up) or down (down)" may include the meaning of the down direction as well as the up direction based on one component.

Hereinafter, a lens driving apparatus according to an exemplary embodiment, a camera module and an optical device including the same will be described with reference to the accompanying drawings. For convenience of description, the Cartesian coordinate system (x, y, z) will be described, but may be described using other coordinate systems, and the embodiment is not limited thereto. In each of the drawings, the x-axis and the 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 direction, is called a 'first direction', and the x-axis direction is called a 'second direction', and y The axial direction may be referred to as a 'third direction'.

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

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

1 and 2, the lens driving apparatus 100 includes a bobbin 110, a coil 120, a first magnet 130-1, a second magnet 130-2, a housing, 140, an upper elastic member 150, a lower elastic member 160, a position sensor 170, a circuit board 190, and a sensing magnet 180.

In addition, the lens driving apparatus 100 may further include a balance magnet (not shown), a base 210, and a cover member 300.

In addition, the lens driving apparatus 100 may further include a capacitor 195 mounted on the circuit board 190.

Hereinafter, the term "coil" may be expressed by replacing a coil unit, and the term "elastic member" may be expressed by replacing an elastic unit or a spring.

First, the bobbin 110 will be described.

The bobbin 110 is disposed inside the housing 140, and is disposed in the direction of the optical axis OA by the electromagnetic interaction between the coil 120 and the first and second magnets 130-1 and 130-2. It may be moved in one direction (eg, Z-axis direction).

3A illustrates a perspective view of the bobbin 110, the first coil 120, and the sensing magnet 180 illustrated in FIG. 1, and FIG. 3B illustrates the bobbin 110, the first coil 120, and the sensing magnet ( The degree of binding of 180) is shown.

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

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

For example, a screw thread 110-1 may be provided on the inner circumferential surface of the bobbin 110 to be coupled to the lens or the lens barrel.

The bobbin 110 may include a plurality of sides, or a plurality of sides.

For example, the bobbin 10 may include first sides 110b-1 to 110b-4 spaced apart from each other and second sides 110c-1 to 110c-4 spaced apart from each other. Each of 110c-1 to 110c-4 may connect two adjacent first sides to each other.

For example, the first sides 110b-1-110b-4 may be referred to as "first side 110b-1", "second side 110b-2", "third side 110b-3", and It may be expressed as "fourth side part 110b-4", and the second side parts 110c-1 to 110c-4 may be "first corner part 110c-1" and "second corner part 110c-". 2) "," third corner portion 110c-3 ", and" fourth corner portion 110c-4 ".

Alternatively, the first sides 110b-1 to 110b-4 may correspond to the "first-first side 110b-1", the "first-second side 110b-2", and the "first-3 side 110b-" 4) ", and" first-4 side 110b-4 ", and the second sides 110c-1 to 110c-4 are" second-1 side 110c-1 ", "2-2 side 110c-2", "2-3 side 110c-3", and 2-4 side "110c-4".

For example, the horizontal or horizontal length of each of the first sides 110b-1 to 110b-4 of the bobbin 110 may be a horizontal or horizontal direction of each of the second sides 110c-1 to 110c-4. May be different from, but is not limited thereto, and in another embodiment, the two may be the same.

The bobbin 110 may have a protrusion 115a provided on an outer surface thereof. For example, the protrusion 115a may be disposed on an outer surface of at least one of the first side parts 110b-1 to 110b-4 of the bobbin 110. The protrusion 115a may protrude in a direction parallel to a straight line that passes through the center of the opening of the bobbin 110 and is perpendicular to the optical axis, but is not limited thereto.

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

In addition, even if the protrusion 115a is moved beyond the range defined in the optical axis direction (for example, the direction from the lower elastic member 160 to the upper elastic member 160) by the external impact or the like, the bobbin 110 The upper surface of the may serve as a stopper for suppressing or preventing the direct collision with the cover member 300.

A first escape groove 112a may be provided on the upper, upper, or upper surface of the bobbin 110 to avoid spatial interference with the first frame connecting portion 153 of the upper elastic member 150. For example, the first escape groove 112a may be disposed on at least one of the first sides 110b-1 to 110b-4 of the bobbin 110, but the present invention is not limited thereto. The groove may be provided in at least one of the first and second sides of the bobbin 110.

In addition, a second escape groove 112b may be provided on the lower, lower, or lower surface of the bobbin 110 to avoid spatial interference with the second frame connector 163 of the lower elastic member 160.

The bobbin 110 may include at least one stopper 116a and 116b protruding from the top, top, or top surface of the bobbin 110.

At least one stopper 116a, 116b of the bobbin 110, even if the bobbin 110 is moved beyond the prescribed range by an external impact or the like when the bobbin 110 moves in the first direction for the auto focusing function. The upper surface of the 110 may serve to prevent a direct collision with the inner side of the upper plate of the cover member 300.

The stopper of the bobbin 110 because of the small size of the bobbin 110, the arrangement of the first and second coil units 120-1, 120-2, and the coupling relationship between the upper elastic member 150 and the bobbin 110. May be constrained by the design and layout of the system.

In consideration of this point, the first stopper 116a and the second stopper 116a having different heights may be formed on the upper, upper, or upper surfaces of the bobbin 110.

The first stopper 116a of the bobbin 110 may be disposed on at least one of the second sides 110c-1 to 110c-4 of the bobbin 110 and the second stopper 116b of the bobbin 110. May be disposed on at least one of the second sides 110c-1 to 110c-4 of the bobbin 110.

For example, the first stopper 116a of the bobbin 110 may be disposed at the second sides 110c-1 and 110c-2 of the bobbin 110 to which the upper elastic member 150 is not coupled.

Also, for example, the second stopper 116b of the bobbin 110 may be disposed on the second sides 110c-3 and 110c-4 of the bobbin 110 to which the upper elastic member 150 is coupled.

An upper surface of the first stopper 116a of the bobbin 110 may be higher than an upper surface of the second stopper 116b of the bobbin 110. Since the height of the first stopper 116a of the bobbin 110 is higher than the height of the second stopper 116b, the first shock is received by the first stopper 116a and the second stopper 116b serves as a stopping function. Can be in charge of

For example, the difference in height between the top surface of the first stopper 116a of the bobbin 110 and the top surface of the second stopper 116b may be 10 [μm] to 30 [μm].

When the difference in height between the top surface of the first stopper 116a of the bobbin 110 and the top surface of the second stopper 116b is less than 10 [μm], the injection tolerance for forming the stopper of the bobbin 110 (about 5 [μm) )), A difference in height between the first stopper 116a and the second stopper 116b may not occur.

On the other hand, when the difference in height is more than 30 [μm], the first stopper 116a of the bobbin 110 may serve as both a shock absorber and a stopper, and the second stopper 116b may not serve as a stopping role. have.

For example, the horizontal length L3 of the upper surface of the second stopper 116b may be greater than the horizontal length L1 of the upper surface of the first stopper 116a (L3> L1). Also, for example, the length L4 in the vertical direction of the upper surface of the second stopper 116b may be equal to or smaller than the length L2 in the horizontal direction of the upper surface of the first stopper 116a (L4 ≦ L2). In another embodiment, L3 ≦ L1 or L4> L2.

In FIG. 3A, one first stopper 116a is disposed at one second side portion 110c-1 or 110-c-2 of the bobbin 110, but is not limited thereto. In FIG. 2, two or more first stoppers may be formed at one second side portion 110c-1 or 110-c-2 of the bobbin 110.

The number of second stoppers 116b disposed on one other second side portion 110c-3 or 110c-4 of the bobbin 110 illustrates three, but is not limited thereto. One, two, or four or more second stoppers may be formed on one other second side of 110.

The bobbin 110 may include a first coupling part 113 to be coupled to and fixed to the first inner frame 151 of the upper elastic member 150. For example, in FIG. 3A, the first coupling part 113 of the bobbin 110 is a protrusion, but is not limited thereto. In another embodiment, the first coupling part 113 of the bobbin 110 may be a groove or a planar shape. Can be.

For example, the first coupling part 113 may be formed at the second side parts 110-3 and 110-4 of the bobbin 110 in which the second stopper 116b of the bobbin 110 is disposed.

Referring to FIG. 3B, the bobbin 110 may include a second coupling part 117 to be coupled to and fixed to the lower elastic member 160, and the second coupling part 117 of the bobbin 110 may be referred to in FIG. 3B. ) Is a protrusion shape, but is not limited thereto. In another embodiment, the second coupling part of the bobbin 110 may be a groove or a planar shape.

For example, the second coupling part 117 may be formed at a lower surface, a lower surface, or a lower surface of the first side parts 110b-1 to 110b-4 of the bobbin 110, and the second side parts of the bobbin 110. It may be disposed adjacent to (110c-1,110c-2).

The bobbin 110 may include at least one stopper 118a and 118b protruding from the bottom, bottom, or bottom of the bobbin 110.

At least one stopper (118a, 118b) of the bobbin 110, even when the bobbin 110 moves in the first direction for the auto focusing function, even if the bobbin 110 is moved beyond the prescribed range by an external impact, etc. The lower surface of the 110 may serve to prevent a direct collision with the upper surface of the base 210.

For example, a third stopper 118a and a fourth stopper 118b having different heights may be formed on the lower, lower, or lower surface of the bobbin 110.

The third stopper 118a of the bobbin 110 may be disposed on at least one of the second sides 110c-1-110c-4 of the bobbin 110, and the fourth stopper 118b of the bobbin 110. May be disposed on at least one of the first sides 110c-1 to 110c-4 of the bobbin 110.

For example, the third stopper 118a of the bobbin 110 may be disposed at the second sides 110c-3 and 110c-4 of the bobbin 110.

Also, for example, the fourth stopper 118b of the bobbin 110 may be disposed on the first side parts 110b-1 to 110b-4 of the bobbin 110 to which the lower elastic member 160 is coupled.

The lower surface of the third stopper 118a of the bobbin 110 may be lower than the lower surface of the fourth stopper 118b of the bobbin 110. By lowering the height of the third stopper 118a of the bobbin 110 than the height of the fourth stopper 118b, the primary shock is received by the third stopper 118a and the second stopper 118b stops. Can play a role.

For example, the difference in height between the bottom surface of the third stopper 118a of the bobbin 110 and the bottom surface of the fourth stopper 118b may be 10 [μm] to 30 [μm].

When the difference in height between the bottom surface of the third stopper 118a of the bobbin 110 and the bottom surface of the fourth stopper 118b is less than 10 [μm], the injection tolerance for forming the stopper of the bobbin 110 (about 5 [μm) )), A difference in height between the third stopper 118a and the fourth stopper 118b may not occur.

On the other hand, when the difference in height between the lower surface of the third stopper 118a of the bobbin 110 and the lower surface of the fourth stopper 118b exceeds 30 [μm], the third stopper 118a of the bobbin 110 is impacted. Both the absorption and the stopper roles, and the fourth stopper 118b may not serve as the stopping role.

For example, the horizontal length L7 of the bottom surface of the fourth stopper 118b may be smaller than the horizontal length L5 of the bottom surface of the third stopper 118a (L7> L5). Further, for example, the length L6 in the longitudinal direction of the lower surface of the fourth stopper 118b may be greater than the length L8 in the horizontal direction of the lower surface of the third stopper 118a (L6> L8). In another embodiment, L7 ≦ L5 or L6 ≦ L8.

In FIG. 3B, one third stopper 118a is disposed on one second side portion 110c-3 or 110c-4 of the bobbin 110, but the present invention is not limited thereto. Two or more third stoppers may be formed on one second side 110c-3 or 110c-4 of 110.

In addition, in FIG. 3B, the number of fourth stoppers 118b disposed on each of the first side parts 110b-1 to 110b-4 of the bobbin 110 is illustrated as one example, but is not limited thereto. In FIG. 2, two or more fourth stoppers may be formed on each of the first side parts 110b-1 to 110b-4 of the bobbin 110.

The first and second coil units 120-1 and 120-2 are seated, inserted, or disposed on the outer surfaces of the second sides 110c-1 and 110c-2 of the bobbin 110 facing each other. A seating groove 105 may be provided. The mounting groove 105 of the bobbin 110 may have a groove structure recessed from an outer surface of the second side portions 110c-1 and 110c-2 of the bobbin 110, and may include first and second coil units ( It may have a shape that matches the shape of 120-1, 120-2.

The bobbin 110 has at least one protrusion provided on an outer surface of the second side parts 110c-1 and 110c-2 for fixing the first and second coil units 120-1 and 120-2. It may include.

For example, the bobbin 110 may include protrusions 5a, 5b and 5c. For example, the protrusions 5a, 5b and 5c may be perpendicular to the optical axis OA and protrude in a direction perpendicular to the outer surfaces of the second sides 110c-1 and 110c-2 of the bobbin 110.

For example, the protrusions 5a, 5b, 5c of the bobbin 110 may be formed at the bottom of the seating groove 105 or the seating groove 105.

For example, the bobbin 110 may include the first protrusions 5a, the second protrusions 5b, and the first protrusions 5a and the first protrusions formed on the outer surfaces of the second side portions 110c-1 and 110c-2, respectively. It may include a third projection (5c) disposed between the two projection (5b). For example, the protruding length of each of the first and second protrusions 5a and 5b may be greater than the protruding length of the third protrusion 5c, but is not limited thereto. In other embodiments, the first and second protrusions The protruding length of each of the fields 5a and 5b may be the same as or smaller than the protruding length of the third protrusion 5c.

The first coil unit 120-1 may have a closed curve or a ring shape wound around the protrusions 5a, 5b, and 5c provided on the second side portion 110c-1 of the bobbin 110, and the second coil unit 120 may be used. -2) may be a closed curve or a ring shape wound around the protrusions 5a, 5b, and 5c provided on the second side portion 110c-2 of the bobbin 110.

The protrusions 5a, 5b, and 5c may be winding protrusions for directly winding the first and second coil units 120-1 and 120-2, but are not limited thereto. And a mounting protrusion (or coupling protrusion) for mounting or coupling the second coil units.

In another embodiment, the bobbin 110 may not include the protrusions 5a, 5b, and 5c in the seating groove 105.

Suppression of separation of the first and second coil units 120-1 and 120-2 when the first and second coil units 120-1 and 120-2 are connected to the lower elastic units 160a and 160b. And to guide both ends of each of the first and second coil units 120-1 and 120-2, a bottom surface, a bottom, or each of the second sides 110c-1 and 110c-2 of the bobbin 110. At least one guide groove 16a or 16b may be provided at a lower end thereof.

The bobbin 110 may include a protrusion 115b protruding from an outer surface of the first side portion 110b-1 of the bobbin 110. The protrusion 115b may be positioned adjacent to the second side portion 110c-4 of the bobbin 110.

The protrusion 115b has no first and second coil units 120-1 and 120-2 disposed therein than the second side portion 110c-1 of the bobbin 110 in which the first coil unit 120-1 is disposed. It may be located closer to the second side (110c-4) of the bobbin 110.

The protrusion 115b of the bobbin 110 may be provided with a mounting recess 180a for mounting, inserting, fixing, or placing the sensing magnet 180.

The mounting groove 180a of the bobbin 110 may have a structure recessed from an upper surface of the protrusion 115b of the bobbin 110, and may be at least one of an upper surface, a lower surface, or an outer surface of the protrusion 115b of the bobbin 110. It may have an open opening.

For example, the mounting groove 180a of the bobbin 110 may include a first opening that opens to the top surface of the protrusion 115b of the bobbin 110 and a second opening that opens to the outside surface of the protrusion 115b of the bobbin 110. It may include.

The mounting groove 180a of the bobbin 110 may have a shape corresponding to or corresponding to the sensing magnet 180.

In another embodiment, the first side portion (110b-3) of the bobbin 110 may be provided with a seating groove for mounting the balancing magnet.

By providing the mounting groove 180a in the protrusion 115b of the bobbin 110, the separation distance between the sensing magnet 180 and the position sensor 170 may be reduced, thereby increasing the output of the position sensor 170. The sensitivity of the position sensor 170 can be improved.

Next, the coil 120 will be described.

The coil 120 is disposed on the first coil unit 120-1 disposed on the second side portion 110c-1 of the bobbin 110 and the second coil disposed on the second side portion 110c-2 of the bobbin 110. Unit 120-2.

The first coil unit 120-1 may be disposed on the second side portion 110c-1 of the bobbin 110 to correspond to or oppose the first magnet 130-1, and the second coil unit 120-2 may be disposed on the second coil unit 120-2. ) May be disposed on the second side portion 110c-2 of the bobbin 110 to correspond to or face the second magnet 130-2.

The first coil unit 120-1 and the second coil unit 120-2 move the bobbin 110 in the optical axis direction through electromagnetic interaction with the first and second magnets 130-1 and 130-2. It may be a coil for the AF driving to move to.

The first coil unit 120-1 may be disposed on the second side portion 110c-1 of the bobbin 110 to have a closed loop shape, and the second coil unit 120-2 may have a closed loop shape. It may be disposed on the second side portion 110c-2 of 110.

Each of the first and second coil units 120-1 and 120-2 may be wound directly on the protrusions 5a, 5b and 5c of the second sides 110c-1 and 110c-2 of the bobbin 110. However, the present invention is not limited thereto, and according to another exemplary embodiment, each of the first and second coil units 120-1 and 120-2 may have protrusions of the bobbin 110 using a coil block having a coil ring or an angled ring shape. Or (5a, 5b, 5c).

For example, each of the first and second coil units 120-1 may be clockwise or counterclockwise with respect to an axis perpendicular to the outer surfaces of the second sides 110c-1 and 110c-2 of the bobbin 110. It may have a wound ring shape.

The first coil unit 120-1 and the second coil unit 120-2 may be electrically connected in series. For example, the first coil unit 120-1 and the second coil unit 120-2 may be electrically connected in series through the third lower elastic unit 160c.

In order to generate an electromagnetic force by interacting with the first and second magnets 130-1 and 130-2, a power or driving signal may be provided to the coil 120. The power or driving signal provided to the coil 120 may be a direct current signal or an alternating current signal, or may include a direct current signal and an alternating current signal, and may be in the form of voltage or current.

When a driving signal (eg, a driving current) is supplied to the first and second coil units 120-1 and 120-2, the first and second coil units 120-1 and 120-2 and the first and second coil units 120-1 and 120-2 are provided. The electromagnetic force may be formed by electromagnetic interaction between the second magnets 130-1 and 130-2, and the bobbin 110 may be moved in the direction of the optical axis OA by the electromagnetic force.

According to the embodiment, at the initial position of the AF movable unit, the bobbin 110 may be moved upward or downward, which is referred to as bidirectional driving of the AF movable unit.

For example, the stroke in the upward direction at the initial position of the AF movable part of the lens driving apparatus according to the embodiment may be greater than the stroke in the downward direction at the initial position. For example, the stroke in the upward direction of the lens driving apparatus according to the embodiment may be 160 [μm] to 260 [μm], and the stroke in the downward direction is 75 [μm based on the initial position of the AF movable part. ] To 175 [μm].

In another embodiment, the bobbin 110 may be moved upward in the initial position of the AF movable part, which is referred to as unidirectional driving of the AF movable part.

At the initial position of the AF movable portion, the first coil unit 120-1 and the first magnet 130-1 in a direction perpendicular to the optical axis OA and parallel to a straight line passing through the optical axis may correspond, oppose, or overlap with each other. The second coil unit 120-2 and the second magnet 130-2 may correspond to, oppose, or overlap with each other.

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

And the initial position of the AF movable portion (eg, the bobbin 110) is the initial position of the AF movable portion without applying power to the coil 120, or the upper and lower elastic members 150 and 160 are merely placed on the weight of the AF movable portion. Only by being elastically deformed may be the position where the AF movable portion is placed.

In addition, the initial position of the AF movable portion may be a position where the AF movable portion is placed when gravity acts in the direction of the bobbin 110 from the bobbin 110 or vice versa. have.

The first and second coil units 120-may be controlled by controlling the intensity or / or polarity (eg, a current flow direction) of the driving signal applied to the first and second coil units 120-1 and 120-2. 1, 120-2 and the first and second magnets (130-1, 130-2) by adjusting the intensity or / and the direction of the electromagnetic force due to the interaction, it is possible to control the movement of the AF movable portion, Therefore, the auto focusing function can be performed.

Next, the sensing magnet 180 will be described.

The sensing magnet 180 is disposed on the bobbin 110 to face the position sensor 170 and may provide a magnetic field for sensing by the position sensor 170.

For example, the sensing magnet 180 may be disposed on the first side portion 110b-1 of the bobbin 110 and adjacent to the second side portion 110b-4 of the bobbin 110.

For example, in order to reduce magnetic interference with the first magnet 130-1, the sensing magnet 180 is disposed on the second side 110c-4 of the bobbin 110 rather than the second side 110c-1 of the bobbin 110. May be arranged closer to each other.

The sensing magnet 180 may be disposed in the mounting recess 180a of the bobbin 110 and may be disposed to face the position sensor 170.

A portion of one surface of the sensing magnet 180 facing the position sensor 170 may be exposed from the seating groove 180a, but is not limited thereto. In another embodiment, the sensing magnet 180 may face the position sensor 170. A portion of one side of the magnet 180 may not be exposed from the mounting groove 180a.

4 is an enlarged view of the sensing magnet 180 illustrated in FIG. 1.

Referring to FIG. 4, the sensing magnet 180 disposed on the bobbin 110 may be parallel to a direction in which an interface between the N pole and the S pole is perpendicular to the optical axis OA. For example, a surface of the sensing magnet 180 facing the position sensor 170 may be divided into an N pole and an S pole, but is not limited thereto. For example, in another embodiment, the sensing magnet 180 disposed on the bobbin 110 may have an interface between the N pole and the S pole with the optical axis OA.

The sensing magnet 180 may be a single-pole magnetized magnet having one N pole and one S pole, but is not limited thereto.

In another embodiment, the sensing magnet 180 may be a bipolar magnet or a quadrupole magnet including two N poles and two S poles.

For example, the sensing magnet 180 includes a first magnet portion 17a, a second magnet portion 17b, and a partition wall 17c disposed between the first magnet portion 17a and the second magnet portion 17b. can do. In this case, the partition wall 17c may be represented by replacing the “nonmagnetic partition wall”.

The first magnet portion 17a may include a first boundary between the N pole, the S pole, and the N pole and the S pole. The first boundary may include a section having substantially no polarity as a portion having substantially no magnetism, and may be a portion naturally occurring to form a magnet including one N pole and one S pole.

The second magnet portion 17b may include a second boundary between the N pole, the S pole, and the N pole and the S pole. The second boundary may include a section having substantially no polarity as a portion having substantially no magnetism, and may be a portion naturally occurring to form a magnet including one N pole and one S pole.

The partition wall 17c separates or isolates the first magnet part 17a and the second magnet part 17b, and may be a part having substantially no magnetic properties and having almost no polarity. For example, the partition may be a nonmagnetic material, air or the like. Nonmagnetic partitions may be referred to as "neutral zones" or "neutral zones."

The partition wall 17c is artificially formed when the first magnet part 17a and the second magnet part 17b are magnetized, and the width of the partition wall 17c is the width of the first boundary part (or the second boundary part). Width). The width of the partition wall 17c may be a length from the first magnet part 17a toward the second magnet part 17b. The width of the first boundary portion (or the second boundary portion) may be the length of the first boundary portion from the N pole to the S pole direction of each of the first and second magnet portions 17a and 17b.

The length t1 in the optical axis direction of the sensing magnet 180 disposed on the bobbin 110 may be greater than the length of the sensing magnet 180 in the direction perpendicular to the optical axis. This is to prevent the bobbin size from increasing in the direction perpendicular to the optical axis in order to mount the sensing magnet, and at the same time, the strength of the magnetic field of the sensing magnet detected by the position sensor is weakened.

At least a portion of the sensing magnet 180 may decrease in a direction from the first side portion 110b-1 of the bobbin 110 toward the first side portion 141-1 of the housing 140.

For example, the sensing magnet 180 may include a first portion P1 including a first surface facing the position sensor 170 and a second portion P2 including a second surface opposite to the first surface. can do.

For example, the first portion P1 of the sensing magnet 180 may be located between the position sensor 170 and the second portion P2 of the sensing magnet 180.

For example, the width W12 of the first portion P1 of the sensing magnet 180 is directed toward the first side portion 141-1 of the housing 140 from the first side portion 110b-1 of the bobbin 110. Can be reduced. Also, for example, the width W11 of the second portion P2 of the sensing magnet 180 may be constant, but is not limited thereto. In another embodiment, the second portion P2 of the sensing magnet 180 may be used. The width W11 may decrease in a direction from the first side portion 110b-1 of the bobbin 110 toward the first side portion 141-1 of the housing 140.

In another embodiment, the second portion P2 of the sensing magnet 180 is disposed in a direction from the first side portion 110b-1 of the bobbin 110 toward the first side portion 141-1 of the housing 140. The width W11 may be decreased, and the width of the first portion P1 of the sensing magnet 180 may be constant.

The width of the sensing magnet 180 may be a length in a direction perpendicular to the direction from the first surface to the second surface of the sensing magnet 180. Alternatively, the width of the sensing magnet 180 may be a length in the horizontal direction of the sensing magnet 180 disposed on the bobbin 110.

The mounting groove 105 formed in the bobbin 110 may have a shape that matches the shape of the sensing magnet 180 described with reference to FIG. 4. By having a structure in which the width of a portion of the sensing magnet 180 is reduced, the sensing magnet 180 disposed in the seating recess 105 may be prevented from being separated or dropped from the seating recess 105. In addition, since the sensing magnet 180 has the shape described with reference to FIG. 4, the influence of the magnetic interference with the first and second magnets 130-1 and 130-2 can be reduced, thereby improving the accuracy of the AF operation. You can.

 The sensing magnet 180 may move in the optical axis direction together with the bobbin 110, and the position sensor 170 may detect the strength or magnetic force of the magnetic field of the sensing magnet 180 moving in the optical axis direction, and the detected result. It can output the output signal according to.

For example, the intensity or magnetic force of the magnetic field detected by the position sensor 170 may change according to the displacement of the bobbin 110 in the optical axis direction, and the position sensor 170 may output an output signal proportional to the intensity of the detected magnetic field. It may be output, the displacement of the bobbin 110 in the optical axis direction using the output signal of the position sensor 170 can be detected.

In order to cancel the influence of the magnetic interference of the sensing magnet 180 on the first and second magnets 130-1 and 130-2 and to balance the weight with the sensing magnet 180, the lens driving according to the embodiment is performed. The device 100 may further comprise a balancing magnet disposed on the first side of the bobbin 110.

Description of the structure, shape, and the like of the sensing magnet 180 may be equally applied to the balancing magnet.

Next, the housing 140 will be described.

The housing 140 accommodates the bobbin 110 inside, and supports the first magnet 130-1, the second magnet 130-2, the position sensor 170, and the circuit board 190.

FIG. 5A shows a perspective view of the housing 140, FIG. 5B shows a perspective view of the housing 140 and the first and second magnets 130-1 and 130-2, and FIG. 5C shows the housing 140, the first view. A perspective view of the first and second magnets 130-1 and 130-2, the position sensor 170, the circuit board 190, and the capacitor 195 are shown.

5A to 5B, the housing 140 may have a hollow pillar shape as a whole. For example, the housing 140 may have a polygonal (eg, rectangular or octagonal) or circular opening, and the opening of the housing 140 may be in the form of a through hole penetrating the housing 140 in the optical axis direction.

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

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

Each of the corner portions 142-1 to 142-4 of the housing 140 may be disposed or positioned between two adjacent sides, and may connect the sides 141-1 to 141-4 to each other. .

For example, the first and second corner portions 142-1 and 142-2 of the housing 140 may face each other, and the third corner portion 142-3 of the housing 140 may be formed of the housing 140. It may be adjacent to the first corner portion 142-1 and may face the fourth corner portion 142-4.

For example, the corner parts 142-1 to 142-4 may be located at a corner or a corner of the housing 140 or may include a corner or a corner of the housing 140.

For example, the number of sides of the housing 140 is four, the number of corners is four, but is not limited thereto, and may be five or more.

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

For example, the sides 141-1 to 141-4 of the housing 140 may correspond to the first sides 110b-1 to 110b-4 of the bobbin 110, and the corners ( 142-1 to 142-4 may correspond to or opposite the second sides 110c-1 to 110c-4 of the bobbin 110.

The first and second magnets 130-1 and 130-2 are accommodated in two opposite corners 141-1 and 141-2 of the corners 142-1 to 142-4 of the housing 140. Seating parts (141a, 141b) or for receiving may be provided.

The seating parts 141a and 141b of the housing 140 may be provided at the bottom or bottom of each of the two corner parts 142-1 and 141-2 facing each other of the housing 140.

For example, the seating portion 141a of the housing 140 may be provided inside or below the first corner portion 142-1 of the housing 140, and the seating portion 141b of the housing 140 may be provided. It may be provided inside the lower or lower end of the second corner portion 142-2 of the housing 140.

The seating parts 141a and 141b of the housing 140 may be formed as grooves having a shape corresponding to each of the first and second magnets 130-1 and 130-2, for example, grooves, but are not limited thereto. It is not.

The seating portions 141a and 141b of the housing 140 may have any one side (eg, 141- 1) of the housing 140 adjacent to each of the first and second corner portions 141-1 and 141-2 of the housing 140. 2, 141-3, and / or 141-4, which may include openings (eg, 14a, 14b, 14c).

For example, the seating portion 141a of the housing 140 opens to the fourth side portion 141-4 of the housing 140 adjacent to the first corner portion 141-1 of the housing 140. It may be provided.

In FIG. 5B, the seating portion 141a of the housing 140 includes one opening that opens to one side of the housing 140, but is not limited thereto. In another embodiment, the seating portion 141a of the housing 140 may be provided. 141a may include two openings that open to two sides of the housing adjacent to first corner portion 141-1.

Also, for example, the seating portion 141b of the housing 140 may include an opening 14b that opens to the side portion 141-2 of the housing 140 adjacent to the second corner portion 141-2 of the housing 140, And an opening 14c that opens to the side portion 141-3 of the housing 140.

For example, one side of the first magnet 130-1 may be exposed to the outer side of the fourth side portion 141-4 of the housing 140 through the opening 14a of the seating portion 141a, and the first side of the first magnet 130-1 may be exposed. The other side of the magnet 130-1 may be supported by the support surface or the support wall of the seating portion 141a.

Also, for example, one side of the second magnet 130-2 may be exposed to the outer side of the second side portion 141-2 of the housing 140 through the opening 14b of the seating portion 141b. The other side surface of the two magnets 130-2 may be exposed to the outer side surface of the third side portion 141-3 of the housing 140 through the opening 14c of the seating portion 141b.

That is, the first magnet 130-1 has a support wall or a support surface on only one side of the seating portion 141a of the first corner portion of the housing 140, and the support of the housing 140 on the other side of the seating portion 141a. There may be a wall or side plate of the cover member 300 (or a wall of the cover member 300).

On the other hand, with respect to the second magnet 130-2, there is no support wall or support surface of the housing on both sides of the seating portion 141b of the second corner portion of the housing 140, and the second corner portion of the housing 140 is provided. There may be side plates (or walls of cover member 300) of cover member 300 on both sides of seating portion 141b.

The openings 14a, 14b, 14c of the seating portions 141a, 141b of the housing 140 may have corners of the first and second magnets 130-1, 130-2. The first and second magnets 130-1 and 130-2 are supported by the seating portions 141a and 141b by being supported by the side portions 141-1 to 141-3 of the housing 140 in which the 14c is formed. It can be stably supported.

In addition, for example, openings may be formed in side surfaces of the seating portions 141a and 141b of the housing 140 facing the first and second coil units 120-1 and 120-2, respectively, and the seating portion 141a. The first surfaces 11a of the first and second magnets 130-1 and 130-2 disposed in the second and second magnets 130-1 and 130-2 may be exposed through openings formed in the side surfaces of the seating parts 141a and 141b. In another embodiment, an opening may not be formed in the side surfaces of the seating parts 141a and 141b.

Also, for example, openings may be formed in lower surfaces of the seating portions 141a and 141b of the housing 140 facing the upper surface of the base 210, and the first and second magnets disposed in the seating portions 141a and 141b. Lower surfaces 11c of 130-1 and 130-2 may be exposed through openings formed in lower surfaces of the seating portions 141a and 141b. The first and second magnets 130-1 and 130-2 may be easily mounted to the seating parts 141 and 141b by openings on the lower surfaces of the seating parts 141a and 141b of the housing 140.

The housing 140 may include at least one of the sides 141-1 to 141-4 (eg, 141- 1) of the housing 140 to avoid spatial interference with the first frame connecting portion 153 of the upper elastic member 150. 2 to 141-3 may be provided with the escape groove (41). For example, the escape groove 41 of the housing 140 may be recessed from the top surface of the housing 140.

The side portion of the housing 140 may be provided with a groove portion 25a or a groove corresponding to or opposed to the protrusion 115a of the bobbin 110.

For example, the groove portion 25a of the housing 140 may be provided at the bottom, bottom, or bottom surface of the side portions 141-3 and 141-4 of the housing 140.

For example, the groove portion 25a of the housing 140 may include an opening that opens to the inner and outer surfaces of the side portions 141-3 and 141-4 of the housing 140, respectively.

The groove portion 25a of the housing 140 formed on the side portion 141-3 of the housing 140 may be formed adjacent to the corner portion 142-3 of the housing 140, and the side portion of the housing 140 The groove portion 25a of the housing 140 formed in the 141-4 may be formed adjacent to the corner portion 142-4 of the housing 140.

When a thread is formed on the inner circumferential surface of the bobbin 110 by the protrusion 115a of the bobbin 110 disposed in the groove of the housing 140, the bobbin 110 may be prevented from moving or rotating.

The first magnet 130-1 may be fixed to the seating portion 141a by an adhesive such as epoxy, and the second magnet 130-2 may be fixed to the seating portion 141b by an adhesive.

Each of the first and second corner portions 142-1 and 142-2 of the housing 140 may be provided with a hole 148 for injecting an adhesive and preventing the injected adhesive from overflowing.

The hole 148 of the housing 140 may be recessed from the bottom surface of each of the first and second corner portions 142-1 and 142-2. For example, the hole 148 of the housing 140 may be formed on either side of the seating portions 141a and 141b of the housing 140.

For example, the hole 148 of the housing 140 may be any of the seating portions 141a and 141b of the housing 140 facing the second surface 11b of the first and second magnets 130-1 and 130-2. It may be formed on one side.

For example, the hole 148 may include an opening that opens to the seating portions 141a and 141b, and the seating portions 141 and 141b and the hole 148 may be connected or communicated with each other.

The shape of the hole 148 may be a semi-circle or semi-elliptic shape, but is not limited thereto and may be implemented in various forms.

In order to prevent the upper surface of the housing 140 from directly colliding with the inner surface of the upper plate of the cover member 300, the stopper 146 may be formed on the upper, upper, or upper surfaces of the housing 140.

The stopper 146 of the housing 140 is at least one of the sides 141-1 to 141-4 of the housing 140, and / or of the corners 142-1 to 142-4 of the housing 140. It may be arranged in at least one.

For example, the stopper 146 may be disposed at the corners 142-1 to 142-4 of the housing 140 and the top, top, or top surface of the first side 141-1 of the housing 140. .

In addition, for example, in order to prevent the lower surface of the housing 140 from colliding with the base 210, the housing 140 may further include a stopper (not shown) protruding from the lower surface.

The housing 140 has a first mounting groove 15a (or groove, seating groove) for accommodating the circuit board 190, and a second mounting groove 15b (or groove, for accommodating the position sensor 170). Seating groove) can be provided.

The first mounting groove 15a of the housing 140 may be provided at one side portion (eg, 141-1) of the housing 140. For example, the first mounting groove 15a of the housing 140 may have a first corner portion 142-1 adjacent to the first side portion 141-1 and the first side portion 141-1 of the housing 140. It may be provided in the third corner portion (142-3).

In order to facilitate mounting of the circuit board 190, the first mounting groove 15a of the housing 140 may be in the form of a groove recessed from a lower surface of the first side portion 141-1 of the housing 140. It may have a shape corresponding to or corresponding to the shape of the substrate 190.

The second mounting groove 15b of the housing 140 may be provided on an inner side surface of the first side portion 141-1 of the housing 140, and may include an opening that is opened inwardly of the housing 140. . The second mounting groove 15b of the housing 140 may be connected to or communicate with the first mounting groove 15a.

In addition, in order to facilitate mounting of the position sensor 170, the second mounting groove 15b of the housing 140 may be recessed from the lower surface of the first side of the housing 140, and the lower portion thereof may be opened. . In addition, in order to increase the sensing sensitivity of the position sensor 170, the second mounting groove 15b of the housing 140 may have an opening that opens to an inner side surface of the first side portion 141-1 of the housing 140. The second mounting groove 15b of the housing 140 may have a shape corresponding to or corresponding to that of the position sensor 170.

For example, the circuit board 190 may be fixed to the first mounting groove 15a of the housing 140 by the adhesive member. For example, the adhesive member may be an epoxy or a double-sided tape, but is not limited thereto.

An evacuation groove 45 may be formed in the first side 141-1 of the housing 140 to avoid spatial interference with the protrusion 115b of the bobbin 110.

The escape groove 45 of the housing 140 may be connected to or communicate with the second mounting groove 15b of the housing 140. For example, at least a portion of the sensing magnet 180 may be disposed in the escape groove 45 of the housing 140, and at least a part of the position sensor 170 may be opened by the escape groove 45 of the housing 140. Can be.

 At least one first coupling part 143 coupled to the first outer frame 152 of the upper elastic member 150 may be provided on the upper, upper, or upper surface of the housing 140. The first coupling part 143 of the housing 140 may be disposed on at least one of the side parts 141-1 to 141-4 or the corner parts 142-1 to 142-4 of the housing 140.

For example, the first coupling part 140 may be disposed on the top, top, or top surface of the first to fourth corner parts 142-1 to 142-4 of the housing 140.

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

For example, the second coupling portion 149 may be disposed on the lower, lower, or lower surface of each of the third corner portion 142-3 and the fourth corner portion 142-4 of the housing 140.

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

For example, the first coupling portion 143 of the housing 140 and the hole 152a of the first outer frame 152 of the upper elastic member 150 are coupled using an adhesive member (eg, solder) or thermal welding. The second coupling part 149 of the housing 140 and the hole 162a of the second outer frame 162 of the lower elastic member 160 may be coupled to each other.

A groove 147 for engaging with the protrusion 51 of the base 210 in the lower, lower, or lower surface of each of the first corner portion 142-1 and the third corner portion 142-3 of the housing 140. Or it may be provided with a coupling groove.

Each of the first corner portion 142-1 and the third corner portion 142-3 of the housing 140 protrudes downward from the lower surfaces of the side portions 141-1 to 141-4 of the housing 140. 47a, 47b can be provided.

For example, the heights of the lower surfaces of the protrusions 47a and 47b may be lower than the heights of the lower surfaces 11c of the first and second magnets 130-1 130-2 disposed in the housing 140.

Also, for example, the height of the lower surface of the protrusion 47a of the housing 140 may be lower than the height of the lower surface of each of the second corner portion 142-2 and the fourth corner portion 142-4 of the housing 140.

For example, the groove 147 of the housing 147 may be formed on the bottom surface of the protrusions 47a and 47b of the housing 140.

Next, the first and second magnets 130-1 and 130-2 will be described.

The first magnet 130-1 may be disposed at the first corner portion 142-1, or the first corner of the housing 140, and the second magnet 130-2 may be disposed at the second corner of the housing 140. It may be disposed at the corner portion 142-2, or the second corner.

At the initial position of the AF movable portion (eg, bobbin 110), the first magnet 130-1 is perpendicular to the optical axis OA and the first corner portion 142-1 of the housing 140 at the optical axis OA. The first coil unit 120-1 may be disposed in the housing 140 to overlap at least a portion of the coil unit 120-1 in a direction parallel to the straight line.

At the initial position of the AF movable portion (eg, bobbin 110), the second magnet 130-2 is perpendicular to the optical axis OA and the second corner portion 142-2 of the housing 140 at the optical axis OA. At least a portion of the second coil unit 120-2 may be disposed in the housing 140 in a direction parallel to a straight line toward the housing 120.

For example, the first and second magnets 130-1 and 130-2 may be inserted into or disposed in the seating portions 141a and 141b of the housing 140.

Each of the first and second magnets 130-1 and 130-2 may have a polyhedron shape that is easy to be seated on the first and second corner portions 142-1 and 142-2 of the housing 140.

For example, an area of the first surface 11a of each of the first and second magnets 130-1 and 130-2 may correspond to an area of the second surface 11b of each of the first and second magnets 130-1 and 130-2. It may be larger than the area.

In order to increase the linearity of the displacement of the bobbin 110 due to the electromagnetic force, the length L1 of the transverse direction of the first surface 11a of the magnet 130-1 or 130-2 is changed to the coil units 120-1 and 120. It may be greater than the length in the horizontal direction of -2), but is not limited thereto. In another embodiment, the length L1 in the horizontal direction of the first surface 11a of the magnet 130-1 or 130-2 is the same as the length in the horizontal direction of the coil units 120-1 and 120-2. It may be small.

The first surface 11a of each of the first and second magnets 130-1 and 130-2 faces the first and second coil units 120-1 and 120-2 (or the outer surface of the bobbin 110). It may be a viewing surface, and the second surface 11b may be an opposite surface of the first surface 11a.

For example, the horizontal length of the second surface 11b of each of the first and second magnets 130-1 and 130-2 may correspond to a first surface of each of the first and second magnets 130-1 and 130-2. It may be less than the length of the transverse direction of 11a).

For example, the transverse direction of the first surface 11a of each of the first and second magnets 130-1 and 130-2 may correspond to the first surface 11a of the first and second magnets 130-1 and 130-2. Orthogonal to the direction from the lower surface of the first and second magnets 130-2 to the upper surface or perpendicular to the optical axis direction on the first surface 11a of the first and second magnets 130-1 and 130-2. It may be in one direction.

For example, the horizontal direction of the second surface 11b of the first and second magnets 130-1 and 130-2 may be formed in the second surface 11b of the first and second magnets 130-1 and 130-2. Orthogonal to the direction from the lower surface of the first and second magnets 130-1 and 130-2 to the upper surface or the optical axis direction from the second surface 11b of the first and second magnets 130-1 and 130-2. It may be in a direction perpendicular to.

For example, the first and second magnets 130-1 and 130-2 each move in a horizontal direction toward a direction from the center of the opening of the housing 140 toward the corner portions 142-1 and 142-2 of the housing 140. It may include a portion where the length of L1 gradually decreases.

For example, each of the first and second magnets 130-1 and 130-2 may move from the first surface 11a of the first and second magnets 130-1 and 130-2 to the second surface 11b. The first and second magnets 130-1 and 130-2 may include portions in which the length L1 in the horizontal direction decreases. For example, the horizontal directions of the first and second magnets 130-1 and 130-2 may be parallel to the first surface 11a of the first and second magnets 130-1 and 130-2.

Each of the first and second magnets 130-1 and 130-2 may be a positive electrode magnetizing magnet or a four-pole magnet including two N poles and two S poles. For example, each of the first and second magnets 130-1 and 130-2 may include a first magnet part, a second magnet part, and a partition wall disposed between the first magnet part and the second magnet part. . In this case, the partition may be expressed as being replaced with "nonmagnetic partition".

According to the embodiment, the lens driving apparatus includes two magnets 130-1 and 130-2 in order to reduce a product size, but the first and second magnets 130-1 and 130-2 are implemented by using a bipolar magnet. The electromagnetic force with the first and second coil units 120-1 and 120-2 can be increased to ensure sufficient electromagnetic force for the AF driving.

In another embodiment, each of the first and second magnets 130-1 and 130-2 may be a single-pole magnetized magnet having one N-pole and one S-pole, and face the first coil unit 120-1. The first surface 11a may be disposed to be the S pole, and the second surface 11b may be the N pole, but is not limited thereto. In another embodiment, the first and second magnets 130-1 and 130-may be disposed. 2) Each of the first surface 11a may be arranged to have an N pole and the second surface 11b to have an S pole.

The planar shape in the horizontal direction of each of the first and second magnets 130-1 and 130-2 may be a polygon such as a triangle, a pentagon, a hexagon, or a rhombus, but is not limited thereto.

5C, the bottom surface of each of the first and second magnets 130-1 and 130-2 disposed on the seating portions 141a and 141b of the housing 140 may be a bottom surface, a bottom surface, or a bottom surface of the housing 140. It can be located below the bottom (or end).

 For example, the bottom surfaces of the first and second magnets 130-1 and 130-2 disposed on the seating portions 141a and 141b of the housing 140 may be the bottom surfaces of the first and second corner portions of the housing 140. It may be located below or below the bottom (or tip).

That is, for example, the first and second magnets 130-1 and 130-2 disposed on the seating portions 141a and 141b of the housing 140 are lower than the bottom, bottom, or bottom (or end) of the housing 140. It may be a more protruding or extended structure.

Next, the circuit board 190 and the position sensor 170 will be described.

The circuit board 190 may be disposed on either side of the housing 140 (eg, the first side 141-1), and the position sensor 170 may be disposed or mounted on the circuit board 190. .

For example, the circuit board 190 may include a first side portion 141-1 of the housing 140, a first corner portion 142-1 and a third portion of the housing 140 adjacent to the first side portion 141-1. It may be disposed at the corner portion 142-3. For example, the circuit board 190 may be disposed in the first mounting groove 15a of the housing 140.

For example, the circuit board 190 may be disposed between the first corner portion 142-1 and the third corner portion 142-3 of the housing 140 and the first to sixth portions of the circuit board 190. The terminals 90-1 to 90-6 may be electrically connected to the position sensor 170.

FIG. 6A is a perspective view of a circuit board 190, FIG. 6B shows a position sensor 170 and a capacitor 195 disposed on the circuit board 190, and FIG. 6C shows one embodiment of the position sensor 170 of FIG. 6B. The structural diagram which concerns on an example is shown.

6A through 6C, the circuit board 190 may include terminals B1, B2, or pads for providing a driving signal to the first and second coil units 120-1 and 120-2. ) And terminals 91-1 to 91-6 for electrically connecting to an external terminal (or an external device).

The position sensor 170 may be disposed on the first surface 19b of the circuit board 190.

In order to facilitate electrical connection with the lower elastic member 160, the terminals B1 and B2 of the circuit board 190 may be disposed on the first surface 19b of the circuit board 190.

For example, the terminals B1 and B2 of the circuit board 190 may be disposed below the position sensor 170 in order to shorten an electrical connection path with the lower elastic member 160, but is not limited thereto.

In addition, the terminals 90-1 to 90-6 of the circuit board 190 may be disposed on the second surface 19a of the circuit board 190 to facilitate electrical connection with an external terminal (or an external device). have.

The second surface 19a of the circuit board 190 may be an opposite surface of the first surface 19b of the circuit board 190. For example, the second surface 19a of the circuit board 190 may be one surface of the circuit board 190 facing the bobbin 110.

The circuit board 190 includes a circuit pattern or wires (not shown) for electrically connecting the position sensor 190 and the terminals B1, B2 and 90-1 to 90-6 of the circuit board 190. can do.

The circuit board 190 may include a body portion S1 and an extension portion S2 positioned below the body portion S1. Body portion S1 may be represented by replacing the "upper end", extension portion S2 may be represented by replacing the "lower end".

The extension part S2 may extend downward from the body part S1. For example, the body portion S1 may include a portion protruding based on the side surface of the extension portion S2. For example, the terminals 90-1 to 90-4 of the circuit board 190 may be arranged in line with the extension S2 of the circuit board 190, and the terminals 90-5 and 90-6 May be disposed on the body portion S1 of the circuit board 190, but is not limited thereto.

For example, the circuit board 190 may be a printed circuit board, or an FPCB.

The position sensor 170 may detect the strength of the magnetic field or the magnetic field of the sensing magnet 180 mounted on the bobbin 110 as the bobbin 110 moves, and may output an output signal according to the detected result. .

The position sensor 170 may be mounted on the circuit board 190 disposed in the housing 140 and may be fixed to the housing 140. For example, the position sensor 170 may be disposed in the second mounting groove 15b of the housing 190.

For example, the position sensor 170 may be disposed closer to the third corner portion 142-3 than the first corner portion 142-1 of the housing 140, and located at the third corner portion of the housing 140. The magnets 130-1 and 130-2 may not be disposed.

The position sensor 170 may be implemented in the form of a driver including a hall sensor.

For example, the position sensor 170 may include a Hall sensor 61 and a driver 62.

For example, the hall sensor 61 may be formed of silicon, and as the ambient temperature increases, the output VH of the hall sensor 61 may increase. For example, the ambient temperature may be a temperature of the lens driving apparatus, for example, a temperature of the circuit board 190, a temperature of the hall sensor 61, or a temperature of the driver 62.

In another embodiment, the Hall sensor 61 may be made of GaAs, and the output VH of the Hall sensor 61 may be reduced with respect to the ambient temperature. For example, in other embodiments, the output of the Hall sensor 61 may have a slope of about −0.06% / ° C. with respect to ambient temperature.

The position sensor 170 may further include a temperature sensing element 63 capable of sensing an ambient temperature. The temperature sensing element 63 may output the temperature sensing signal Ts according to the result of measuring the temperature around the position sensor 170 to the driver 62.

For example, the Hall sensor 61 of the position sensor 190 may generate an output VH according to a result of sensing the strength of the magnetic force of the sensing magnet 180. For example, the magnitude of the output of the position sensor 190 may be proportional to the strength of the magnetic force of the sensing magnet 180.

The driver 62 may output a driving signal dV for driving the hall sensor 61 and a driving signal Id1 for driving the first and second coil units 120-1 and 120-2. have.

For example, using data communication using a protocol, for example, I2C communication, the driver 62 receives a clock signal SCL, a data signal SDA, and a power signal VDD and GND from the controllers 830 and 780. Can be received.

Here, the first power signal GND may be a ground voltage or 0 [V], and the second power signal VDD may be a predetermined voltage for driving the driver 62, and may be a DC voltage and / or an AC voltage. It may be, but is not limited thereto.

The driver 62 uses the clock signal SCL, the data signal SDA, and the power signals VDD and GND to drive signals dV for driving the hall sensor 61, and first and second coils. The driving signal Id1 for driving the units 120-1 and 120-2 may be generated.

The position sensor 170 may include first to fourth terminals and first and second coil units 120-1 to transmit and receive a clock signal SCL, a data signal SDA, and a power signal VDD and GND. And fifth and sixth terminals for providing a driving signal to 120-2).

The driver 62 also receives the output VH of the hall sensor 61 and relates to the output VH of the hall sensor 61 using data communication using a protocol, for example, I2C communication. The clock signal SCL and the data signal SDA may be transmitted to the controllers 830 and 780.

In addition, the driver 62 receives the temperature sensing signal Ts measured by the temperature sensing element 63, and controls the temperature sensing signal Ts using data communication using a protocol, for example, I2C communication. 830, 780 may be transmitted.

The controllers 830 and 780 may perform temperature compensation on the output VH of the hall sensor 61 based on the ambient temperature change measured by the temperature sensing element 63 of the position sensor 170.

For example, when the drive signal dV of the hall sensor 61 or the bias signal is 1 [mA], the output VH of the hall sensor 61 of the position sensor 170 is -20 [mV] to +20. [mV].

And in the case of temperature compensation for the output VH of the hall sensor 61 having a negative slope with respect to the ambient temperature change, the output VH of the hall sensor 61 of the position sensor 170 is 0 [mV]. It may be ~ +30 [mV].

When displaying the output of the Hall sensor 61 of the position sensor 170 in the xy coordinate system, the output range of the Hall sensor 61 of the position sensor 170 is set in the first quadrant (for example, 0 [mV] to +30 [). mV]) is as follows.

Since the output of the Hall sensor 61 in the first quadrant of the xy coordinate system and the output of the Hall sensor 61 in the third quadrant move in opposite directions according to the change in the ambient temperature, both the first and third quadrants are AF. When used as a driving control section, the accuracy and reliability of the Hall sensor may be degraded. Therefore, in order to accurately compensate for the change in ambient temperature, the predetermined range of the first quadrant may be set as the output range of the hall sensor 61 of the position sensor 170.

The first to fourth terminals of the position sensor 170 may be electrically connected to any one of the terminals 90-1 to 90-4 of the circuit board 190.

The fifth and sixth terminals of the position sensor 170 may be electrically connected to any one of the terminals B1 and B2 of the circuit board 190. In addition, the terminals 90-5 and 90-6 of the circuit board 190 may be test terminals.

The terminals B1 and B2 of the circuit board 190 may be combined with a corresponding one of the lower elastic units 160a and 160b, and the position sensor 170 is provided by the lower elastic units 160a and 160b. May be electrically connected to the first and second coil units 120-1 and 120-2, and may provide a driving signal to the first and second coil units 120-1 and 120-2.

For example, the fifth terminal B5 of the circuit board 190 may be coupled to the first lower elastic unit 160a, and the sixth terminal B6 of the circuit board 190 may be connected to the second lower elastic unit 160b. Can be combined.

FIG. 7A is a sectional view in the AB direction of the lens driving apparatus 100 shown in FIG. 2, and FIG. 7B is a sectional view in the CD direction of the lens driving apparatus 100 shown in FIG. 2.

7A and 7B, each of the second magnets 180 may be coil units 120-1 and 120-2 in a direction perpendicular to the optical axis OA or in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis. It may not overlap with, but is not limited thereto. In another embodiment, the second magnet 180 may overlap the coil units 120-1 and 120-2.

In addition, at the initial position of the AF movable part (eg, the bobbin 110), the position sensor 170 may move the second magnet 180 in a direction perpendicular to the optical axis OA or in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis. ) May overlap.

In addition, the position sensor 170 may not overlap the first and second magnets 130-1 and 130-2 in a direction perpendicular to the optical axis OA or in a direction perpendicular to the optical axis and parallel to a straight line passing through the optical axis. .

For example, the position sensor 170 may be connected to the first magnet 130 in a direction from the position sensor 170 toward the coil 120 or in a direction perpendicular to the outer surface of the first side 141-1 of the housing 140. It may not overlap.

Next, the upper elastic member 150, the lower elastic member 160, and the base 210 will be described.

8A shows the upper elastic member 150 shown in FIG. 1, FIG. 8B shows the lower elastic member 160 shown in FIG. 1, and FIG. 9 shows the lens driving apparatus except for the base 210 in FIG. 2. A bottom view of 100 is shown, and FIG. 10 shows the lower elastic member 160, the base 210, and the circuit board 190.

8A, 8B, 9, and 10, the upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110 and the housing 140 and support the bobbin 110. .

The upper elastic member 150 may be coupled to the upper, upper, or upper surface of the bobbin 110, and the lower elastic member 160 may be coupled to the lower, lower, or lower surface of the bobbin 110.

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

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

In FIG. 8A, the upper elastic member 150 includes one upper elastic unit (or upper spring), but in another embodiment, the upper elastic member may include a plurality of upper elastic units spaced apart from each other.

The upper elastic member 150 may include a first inner frame coupled to an upper, upper surface, or upper end of the bobbin 110, a first outer frame coupled to an upper, upper surface, or upper end of the housing 140, and a first inner frame. It may include a first frame connecting portion connecting the 151 and the first outer frame 152. The inner frame can be represented by replacing "inside" and the outer frame can be expressed by replacing "outside".

For example, the first outer frame of the upper elastic member 150 may be a first-first outer frame 152-1 coupled to the upper, upper surface, or upper end of the first corner portion 142-1 of the housing 140, and The first-first outer frame 152-1 may be coupled to an upper portion, an upper surface, or an upper end of the second corner portion 142-2 of the housing 140.

For example, the first outer frame of the upper elastic member 150 may be spaced apart from the third corner portion 142-3 and the fourth corner portion 142-4 of the housing 140 and may not be coupled.

Also, for example, the first inner frame of the upper elastic member 150 may be an upper portion of the second side portion 110c-3 of the bobbin 110 that corresponds to or opposes the third corner portion 142-3 of the housing 140. The first side inner frame 151-1 coupled to the upper surface or the upper side, and the second side portion 110c-corresponding to or opposite to the fourth corner portion 142-4 of the housing 140. It may include a first-second inner frame (151-2) that is coupled to the top, top, or top of 4).

For example, the first inner frame of the upper elastic member 150 may have the second sides 110c-of the bobbin 110 corresponding or opposing the first and second corner portions 142-1, 142-2 of the housing 140. 1 and 110c-2) may be spaced apart from each other and not coupled to each other.

However, in another embodiment, the first outer frame of the upper elastic member 150 may be coupled to at least one of the third corner portion 142-3 and the fourth corner portion 142-4 of the housing 140. In another embodiment, the first inner frame of the upper elastic member 150 may be coupled to at least one of the second sides 110c-1 and 110c-2 of the bobbin 110.

The first inner frames 151-1 and 151-2 of the upper elastic member 150 may be provided with holes 151a for engaging with the first coupling part 113 of the bobbin 110. In addition, the first outer frames 152-1 and 152-2 of the upper elastic member 150 may be provided with holes 152a for engaging with the first coupling part 143 of the housing 140, and the holes 152a. At least one cutout 51a may be formed between the first coupling part 143 and the hole 151a to penetrate the adhesive.

For example, the upper elastic member 150 may include four first frame connectors 153, but the number thereof is not limited thereto. The first frame connectors may be positioned to correspond to the sides 142-1 to 142-4 of the housing 140.

Referring to FIG. 8B, the lower elastic member 160 may include a first lower elastic unit 160a, a second lower elastic unit 160b, and a third lower elastic unit 160c. The lower elastic unit can be represented by substituting "lower spring".

 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 coil springs and suspension wires.

The first to third lower elastic units 160a to 160c may be coupled to the bobbin 110. At least one of the first to third lower elastic units 160a to 160a may be coupled to the bobbin 110 and the housing 140.

The first to third lower elastic units 160a to 160c may be disposed between the bobbin 110 and the base 210. For example, the lower elastic member 160 may not overlap at least one of the first magnet and the second magnet in the optical axis direction. For example, the first to third lower elastic units 160a to 160c may not overlap the first magnet 130-1 and / or the second magnet 130-2 in the optical axis direction.

At least one of the first to third lower elastic units 160a to 160c may include a second inner frame 161, a lower portion, a lower surface, or a second inner frame 161 coupled to a lower portion, a lower surface, or a lower portion of the bobbin 110. It may include a second outer frame 162 coupled to the bottom, and a second frame connecting portion 163 connecting the second inner frame 161 and the second outer frame 162.

For example, the inner frame of the first lower elastic unit 160a may be disposed under one side of the bobbin 110, and the inner frame of the second lower elastic unit 160b may be on the other side of the bobbin 110. It may be disposed below, and the inner frame of the third lower elastic unit 160c may be disposed below the other two sides of the bobbin 110.

In addition, the second inner frame 161 of at least one of the first to third lower elastic units 160a to 160c may be coupled to the second coupling part 117 of the bobbin 110 by soldering or a conductive adhesive member. The hole 161a may be provided.

The second outer frame 162 of at least one of the first to third lower elastic units 160a to 160c may be provided with a hole 162a for engaging with the second coupling part 149 of the housing 140. have. An opening may be formed in the holes 161a and 162a of the first to third lower elastic units 160a to 160c to infiltrate the adhesive.

For example, the first lower elastic unit 160a may be coupled to the third corner portion 142-2 of the housing 140 and electrically connected to the terminal B1 of the circuit board 190.

For example, the second lower elastic unit 160b may be coupled to the third corner portion 142-2 of the housing 140 and electrically connected to the terminal B2 of the circuit board 190.

For example, the third lower elastic unit 160c may be coupled to the fourth corner portion 142-4 of the housing 140 facing the third corner portion 142-3 of the housing 140.

Referring to FIG. 9, for example, the second outer frame 162 of the first lower elastic unit 160a may be coupled to the lower, lower, or lower surface of the third corner portion 142-2 of the housing 140. have.

Also, for example, the second inner frame 161 of the first lower elastic unit 160a may be formed on the first side portion 110b-1 of the bobbin 110 opposite the first side portion 141-1 of the housing 140. It can be combined with the bottom, bottom, or bottom surface.

In addition, a first bonding part 61a (or first) is coupled to the second inner frame 161 of the first lower elastic unit 160a to couple one end of the first coil unit 120-1 to each other by a conductive adhesive member or soldering. 1 coupling portion) may be provided. For example, the first bonding portion 61a may be disposed on the second side portion 110c-1 of the bobbin 110 in which the first coil unit 120-1 is disposed.

In addition, the second outer frame 162 of the first lower elastic unit 160a extends from the third corner portion 142-3 of the housing 140 to the terminal B1 of the circuit board 190. 61b may be included.

The first extension portion 61b is connected to the circuit board 190 from one region of the second outer frame 162 of the first lower elastic unit 160a coupled with the third corner portion 142-3 of the housing 140. It may extend toward the terminal (B1) of.

At one end of the first extension part 61b, a pad part Q1 or a bonding part may be formed to be electrically connected to the terminal B1 of the circuit board 190 by a conductive adhesive or solder. In order to facilitate soldering, the width of the pad portion Q1 may be larger than the width of the first extension portion 61b. The width of the first extension part 61b may be a length in a direction perpendicular to the length direction of the first extension part 61b.

In addition, the first extension part 61b may be bent or curved at least once, but is not limited thereto. In another embodiment, the first extension part 61b may have a straight line shape.

For example, the second outer frame 162 of the second lower elastic unit 160b may be coupled to the lower, lower, or lower surface of the third corner portion 142-2 of the housing 140.

Also, for example, the second inner frame 161 of the second lower elastic unit 160b may be formed on the first side portion 110b-3 of the bobbin 110 opposite the third side portion 141-3 of the housing 140. It can be combined with the bottom, bottom, or bottom surface.

In addition, a second bonding part 62a (or first) is coupled to the second inner frame 161 of the second lower elastic unit 160b to couple one end of the second coil unit 120-2 by a conductive adhesive member or solder. 2 coupling portion) may be provided. For example, the second bonding part 62a may be disposed on the second side part 110c-2 of the bobbin 110 in which the second coil unit 120-2 is disposed.

In addition, the second outer frame 162 of the second lower elastic unit 160b extends from the third corner portion 142-3 of the housing 140 to the terminal B2 of the circuit board 190. 62b.

The second extension part 62b is formed from the circuit board 190 from one region of the second outer frame 162 of the second lower elastic unit 160b coupled with the third corner part 142-3 of the housing 140. It may extend toward the terminal (B2) of.

At one end of the second extension part 62b, a pad part Q2 or a bonding part may be formed to be electrically connected to the terminal B2 of the circuit board 190 by a conductive adhesive or solder. In order to facilitate soldering, the width of the second pad part Q2 may be larger than the width of the second extension part 62b. The width of the second extension part 62b may be a length in a direction perpendicular to the length direction of the second extension part 62b.

In addition, the second extension part 62b may be bent or curved at least once, but is not limited thereto. In another embodiment, the second extension part 62b may have a straight line shape.

For example, the second outer frame 162 of the third lower elastic unit 160c may be coupled to the lower, lower, or lower surface of the fourth corner portion 142-4 of the housing 140.

Also, for example, the second inner frame 161 of the third lower elastic unit 160b may be formed by the bobbin 110 opposite the second side portion 141-2 and the fourth side portion 141-4 of the housing 140. It may be combined with the lower, lower, or lower surface of the first side portion (110b-2, 110b-4).

In addition, a third bonding part 64a (or a second) for coupling the other end of the first coil unit 120-1 to the second inner frame 161 of the third lower elastic unit 160b by a conductive adhesive member or soldering. 2 coupling portion) and a fourth bonding portion 64b for coupling the other end of the second coil unit 120-2 may be provided.

For example, the third bonding portion 64a may be disposed on the second side portion 110c-1 of the bobbin 110 in which the first coil unit 120-1 is disposed, and the fourth bonding portion 64b is formed of the third bonding portion 64b. The second coil unit 120-2 may be disposed on the second side portion 110c-2 of the bobbin 110.

At least one guide groove may be formed in each of the first to fourth bonding parts 61a, 62a, 64a, and 64b to guide one end and the other end of the first and second coil units.

The third lower elastic unit 160c includes, but is not limited to, one second outer frame 162, two second inner frames 161, and two second frame connectors 163.

The first coil unit 120-1 and the second coil unit 120-2 may be connected in series by the third lower elastic unit 160-3, and the terminals B1 and B2 of the circuit board 190 may be connected. Through one driving signal may be provided to the first coil unit 120-1 and the second coil unit 120-2.

The first to third lower elastic units 160a to 160c may be spaced apart from the first corner portion 142-1 and the second corner portion 142-2 of the housing 140.

The first to third lower elastic units 160a to 160c in the optical axis direction may not overlap with the first and second magnets 130-1 and 130-2, but are not limited thereto.

In another embodiment, the first to third lower elastic units may overlap the first and second magnets 130-1 and 130-2 in the optical axis direction. In another embodiment, at least one of the first to third lower elastic units is coupled to at least one of the first corner portion 142-1 or the second corner portion 142-2 of the housing 140. It may also include an outer frame.

Referring to FIG. 9, the virtual straight lines 508a connecting the third corner portion 142-3 and the fourth corner portion 142-4 of the housing 140 may include magnets 130-1 and 130-2 and coils ( May not overlap with 120-1 and 120-2).

For example, one region of the third corner portion 142-3 of the housing 140 coupled with the first and second lower elastic units 160a and 160b and the housing 140 coupled with the third lower elastic unit 160c. The virtual straight lines 508a connecting one region of the fourth corner portion 142-4 may not overlap with the magnets 130-1 and 130-2 and the coils 120-1 and 120-2.

In addition, the virtual straight line 508a may not overlap the second inner frame (or the second inner part 161) of the lower elastic member 160. In addition, the virtual straight line 508 may not overlap the second frame connection portion (or connection portion 163) of the lower elastic member 160.

In addition, the virtual straight line 508a may overlap the second outer frame (or the second outer portion 162) of the lower elastic member 160.

In addition, the imaginary straight line 508b connecting the first corner portion 142-1 and the second corner portion 142-2 of the housing 140 may include the magnets 130-1 and 130-2 and the coils 120-1 and 120. May overlap with -2).

On the other hand, the virtual straight line 508b may not overlap with the second outer frame (or the second outer portion 162) of the lower elastic member 160.

In another embodiment, the imaginary straight line may be a lower portion, a lower surface, or a lower edge of the third corner portion 142-3 of the housing 140, and a lower portion of the fourth corner portion 142-4 of the housing 140. If it is, or may be a straight line connecting the lower edge.

In order to absorb and cushion the vibration of the bobbin 110, the lens driving apparatus 100 may include a damper (not shown) disposed between the upper elastic member 150 and the housing 140.

For example, a damper (not shown) may be disposed in a space between the first frame connector 153 and the housing 140 of the upper elastic member 150.

Also, for example, the lens driving apparatus 100 may further include a damper (not shown) disposed between the second frame connecting portion 163 and the housing 140 of each of the first to third lower elastic units 160a to 160c. You may.

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

Next, the base 210 will be described.

Referring to FIG. 10, the base 210 may have an opening corresponding to an opening of the bobbin 110, and / or an opening of the housing 140, and may be shaped or matched with or correspond to the cover member 300. It may have a rectangular shape.

When the base 210 is adhesively fixed to the cover member 300, the base 210 may include a step 211 at a lower end of a side to which an adhesive may be applied. In this case, the step 211 may guide the cover member 300 coupled to the upper side, and may face the lower end of the side plate of the cover member 300. An adhesive member or a sealing member may be disposed or applied between the lower end of the side plate of the base 210 and the step 211 of the base 210.

The base 210 may be disposed below the bobbin 110 and the housing 140. For example, the base 210 may be disposed below the lower elastic member.

Protrusions 216 corresponding to or opposite to the first and second corner portions 142-1 and 142-2 of the housing 140 may be provided at the corners of the upper surface of the base 210. For example, the protrusion 216 may have a polygonal column shape protruding from the top surface of the base 210 to be perpendicular to the top surface of the base 210, but is not limited thereto.

The protrusion 216 may be in contact with the bottom or bottom of the first and second corner portions 142-1 and 142-2 of the housing 140, and may be contacted with an adhesive member (not shown) such as epoxy or silicone. It may be combined with the bottom or the bottom of the first and second corner portions (142-1, 142-2) of.

The base 210 may include a seating groove 210a on which the lower end of the circuit board 190 is seated on an outer surface corresponding to the circuit board 190. For example, the mounting groove 210a may be provided at one side of the base 210 corresponding to the first side portion 141-1 of the housing 140.

For example, the extension S2 of the circuit board 190 may be disposed in the mounting groove 210a of the base 210.

The base 210 may include a first escape groove 22a and a second escape groove 22b formed on an upper surface of the base 210 adjacent to an outer surface corresponding to the circuit board 190.

The first escape groove 22a is to avoid spatial interference with the pad portion Q1 of the first lower elastic unit 160a, and the second escape groove 22b is the pad portion of the second lower elastic unit 160b. This is to avoid spatial interference with (Q2).

The base 210 may include a protrusion 38 protruding in a direction perpendicular to the optical axis from outer surfaces of corners of the base corresponding to the first and third corner portions 142-1 and 142-3 of the housing 140. have.

Corners of the base 210 opposite the first and third corner portions 142-1 and 142-3 of the housing 140 have first and third corner portions 142-1 and 142 of the housing 140. A protrusion 51 may be formed to be coupled to the groove 147 reflected at -3). For example, the groove 147 of the housing 140 and the protrusion 51 of the base 210 may be coupled to each other by an adhesive. For example, the protrusion 51 may be disposed on the protrusion 38 of the base 210.

The cover member 300 includes a bobbin 110, a coil 120, first and second magnets 130-1 and 130-2, a housing 140, and an upper elastic member in an accommodation space formed together with the base 210. 150, the lower elastic member 160, the position sensor 170, the sensing magnet 180, and the circuit board 190 may be accommodated.

The cover member 300 may be in the form of a box having an open bottom and a top plate and side plates, and a lower portion of the cover member 300 may be coupled to an upper portion of the base 210. The shape of the top plate of the cover member 300 may be polygonal, for example, square or octagonal.

The cover member 300 may include an opening on the upper plate for exposing a lens (not shown) coupled to the bobbin 110 to external light. The material of the cover member 300 may be a non-magnetic material such as SUS to prevent sticking with the first and second magnets 130-1 and 130-2, but is not limited thereto. The coil may be formed of a magnetic material. It may also function as a yoke to improve the electromagnetic force between the 120 and the first and second magnets 130-1 and 130-2.

In general, the planar shape of the AF lens driving device may be square, and may have a structure in which magnets are disposed on four or two surfaces of the housing at intervals of 90 degrees. In products requiring specifications in which the outer diameter of the lens becomes large and the size of the lens driving device becomes small, when the lens driving device has the above-described square structure, constraints on the arrangement of position sensors or circuit boards, and / or magnets, etc. May exist.

In particular, the design of mounting a driver IC type position sensor with a function of temperature compensation and the like inside the lens driving device has been increasing. In contrast to the horizontal and vertical size and thickness of a single Hall sensor, the position sensor in the form of a driver IC has a larger horizontal and vertical size and thickness. Therefore, when specifications of a large lens aperture size and a small size lens driving device are required, there may be a spatial constraint for mounting the position sensor in the form of a driver IC.

Referring to FIG. 9, in order to secure a space for arranging the position sensor in the form of a driver IC, the length L11 of the longitudinal direction of the housing 140 according to the embodiment is the length L12 of the horizontal direction of the housing 140. (L11> L12). For example, L12: L11 = 1: 1.1 to 1: 1.5, but is not limited thereto.

The longitudinal direction of the housing 140 may be a direction from the first side portion 141-1 of the housing 140 to the second side portion 141-2. The horizontal direction of the housing 140 may be a direction from the third side portion 141-3 of the housing 140 to the fourth side portion 141-4.

For example, the center 501 of the housing 140 and the center 502 of the bobbin 110 may not coincide with each other. For example, the middle 502 of the bobbin 110 may be the center of the opening of the bobbin 110.

For example, the center 502 of the bobbin 110 may be located closer to the second side 141-2 of the housing 140 than to the first side 141-1 of the housing 140.

For example, the center 501 of the housing 140 may be a point where the first horizontal center line 201a of the housing 140 meets the first vertical center line 201b of the housing 140.

For example, the first horizontal center line 201a is parallel to the direction from the third side portion 141-3 to the fourth side portion 141-4 of the housing 140 and passes through the center 501 of the housing 140. It may be straight. For example, the first vertical center line 201b is parallel to the direction from the first side portion 141-1 to the second side portion 141-2 of the housing 140, and passes through the center 501 of the housing 140. It may be straight.

For example, the center 502 of the bobbin 110 may be a point where the second horizontal centerline 202a of the bobbin 110 and the second vertical centerline 202b of the bobbin 110 meet each other.

For example, the second horizontal center line 202a is parallel to the direction from the third side portion 141-3 of the housing 140 toward the fourth side portion 141-4, and has a center 502 of the opening of the bobbin 110. It may be a straight line passing through. For example, the second vertical center line 202b may be a straight line parallel to the first vertical center line 201b and passing through the center 502 of the opening of the bobbin 110.

The distance from the center 502 of the bobbin 110 to the second side 141-2 of the housing 140 is from the center 502 of the bobbin 110 to the first side 141-1 of the housing 140. It may be less than the distance of.

For example, the second side portion 141-2 of the housing 140 in a direction from the second side portion 141-2 of the housing 140-1 toward the first side portion 141-1 of the housing 140-1. Distance D1 between the outer surface of the bobbin 110 and the center 502 of the bobbin 110 is the distance D2 between the outer surface of the first side 141-1 of the housing 140 and the center 502 of the bobbin 110. ) May be smaller (D1 <D2).

Also, for example, the thickness T1 of the second side portion 141-2 of the housing 140 may be smaller than the thickness T2 of the third side portion 141-3 of the housing 140 (T1 <T2). Also, for example, the thickness T1 of the second side 141-2 of the housing 140 may be smaller than the thickness T3 of the fourth side 141-4 of the housing 140 (T1 <T3). For example, T2 may be the same as T3, but is not limited thereto, and the two may be different from each other.

By making T1 smaller than T2, D1 can be reduced. In addition, since T2 is larger than T1, the third side portion 141-3 and the fourth side portion 14-4 of the housing 140 stabilize the corner portions of the first and second magnets 130-1 and 130-2. I can support it.

Also, for example, the thickness T4 of the first side portion 141-1 of the housing 140 may be, for example, the thickness T1 of the second side portion 141-2 of the housing 140, and the thickness T2 of the third side portion. ) And the thickness T3 of the fourth side portion 140-4 (T4> T1, T4> T2, T4> T3).

Since T4 is larger than T1, T2, and T3, it is possible to secure a sufficient space for disposing the circuit board 190 and the position sensor 170 while reducing the opening size of the bobbin 100.

11 illustrates a conceptual diagram of an optical device 200A including a lens driving apparatus according to an embodiment.

Referring to FIG. 11, the camera module including the lens driving apparatus 100 may be mounted on the front surface 403 of the optical device 200A. In this case, in order to improve the degree of freedom in design of the front surface 403 of the optical device, the lens driving device 100 may be positioned adjacent to an edge of the optical device 200A, for example, the upper or upper surface 405.

For example, the lens driving device 100 is disposed in the optical device 200A such that the second side 141-2 of the housing 140 shown in FIG. 9 is adjacent to the top or top surface 405 of the optical device 200A. Can be.

The customer also requires certain specifications for D1 in FIG. 9 to improve the degree of freedom of design of the front surface 403 of the optical device. For example, D1 may be 3 [mm] to 4 [mm], but is not limited thereto.

Since the lens 412 mounted to the lens driving apparatus 100 needs to receive light, it should be opened from the front surface 403 of the optical device. As shown in FIG. 9, when D2 <D1, the camera module including the lens driving apparatus 100 according to the embodiment is applied to the optical device 200A, the lens 412 is formed on the upper end of the optical device 200A. Alternatively, it may be disposed adjacent to the upper surface 405, thereby improving the degree of freedom of design for the front surface of the optical device (200A).

In addition, the magnets 130-1 and 130-2 are disposed at the first and second corners 142-1 and 142-2 of the housing 140, and the first and second corners 142-1 and 142-of the housing 140 are disposed. Coil units 120-1 and 120-2 are disposed on the second sides 110c-1 and 110c-2 of the bobbin 110 corresponding to 2), and the position sensor 170 is disposed in the first portion of the housing 140. The corner part 142-1, the first side part 141-1, and the third corner part 142-3 are disposed, and the sensing magnet 180 has a third corner part 142-3 in the housing 140. It may be disposed on the first side portion (110b-1) of the bobbin 110 adjacent to the. As a result, the embodiment can mount a large-diameter lens desired by the customer while reducing the size of the product, and can improve the degree of freedom of design of the front surface of the optical device to which the lens driving device is mounted.

1 to 11 illustrate that the first and second magnets 130-1 and 130-2 are disposed in the housing 140, but embodiments of the present disclosure are not limited thereto, and in other embodiments, the first and second magnets are illustrated. May be disposed at the first and second corner portions of the cover member.

For example, the cover member may include first to fourth sides corresponding to the first to fourth sides of the housing 140, and first to fourth corners corresponding to the first to fourth corners of the housing 140. It may include parts.

The bobbin 110 may be disposed in the cover member, the coil 120 may be disposed in the bobbin, the circuit board may be disposed on one inner side of the cover member, the position sensor may be disposed on the circuit board, The sensing magnet may be arranged in the bobbin opposite the position sensor.

In addition, the first magnet 130-1 may be disposed at the first corner portion of the cover member, and the second magnet 130-2 may be disposed at the second corner portion facing the first corner portion of the cover member. have.

In addition, the position sensor 170 may be disposed closer to the third corner portion than the first corner portion, and the magnet may not be disposed at the third corner portion of the cover member. Also, for example, the circuit board 190 may be located between the first corner portion and the third corner portion of the cover member 300. In the embodiment of FIG. 1, the placement relationship between the housing 140 and the first and second magnets 130-1 and 130-2, the placement relationship between the housing 140 and the circuit board 190, and the housing 140. For the description of the position sensor 170 and the capacitor 195, the cover member and the first and second magnets 130-1 and 130-2, the circuit board 190, and the position sensor 170 according to the above-described other embodiments are described. , And capacitor 195. In addition, in other embodiments, the upper and lower elastic members 150 and 160 may be coupled to the cover member, and the description of the housing 140 and the lower elastic member 160 of FIG. 9 is a cover member according to another embodiment. And the lower elastic member 160.

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

Referring to FIG. 12, the camera module 200 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. (connector, 840).

The lens module 400 may include a lens or / and a lens barrel, and may be mounted 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 that accommodates one or more lenses. However, one configuration of the lens module is not limited to the lens barrel, and any structure may be used as long as the holder structure can support one or more lenses. The lens module may be coupled to the lens driving apparatus 100 and move together with the lens driving apparatus 100.

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

The adhesive member 612 may couple or attach the base 210 of the lens driving apparatus 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. In this case, the filter 610 may be disposed to be parallel to the x-y plane.

In this case, 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 blocking coating material on a plate-shaped optical filter such as a cover glass or a cover glass for protecting an imaging surface.

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

For example, the base 210 may be provided on a lower surface of the mounting portion for mounting the filter 610. In another embodiment, a separate sensor base for mounting the filter 610 may be provided.

The circuit board 800 may be disposed under the lens driving device 100, and the 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 may convert the received image into an electrical signal.

The image sensor 810 may be positioned to coincide with the lens module 400 and the optical axis. 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 image sensor 810 may be, for example, a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID. However, the type of image sensor is not limited thereto.

The filter 610 and the image sensor 810 may be spaced apart from each other in a 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.

In addition, the lens driving apparatus 100 according to the embodiment forms an image of an object in a space using reflection, refraction, absorption, interference, diffraction, etc., which are characteristics of light, and aims to increase the visual power of the eye, or It may be included in an optical instrument for the purpose of recording and reproducing the image by or for the purpose of optical measurement, propagation or transmission of the image. For example, the optical device according to the embodiment may be a mobile phone, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP). ), Navigation, etc., but is not limited thereto. Any device for taking an image or a picture may be used.

13 is a perspective view of a portable terminal 200A according to an embodiment, and FIG. 14 is a block diagram of the portable terminal illustrated in FIG. 13.

13 and 14, the portable terminal 200A (hereinafter referred to as a “terminal”) includes a body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, and input / output. The output unit 750 may include a memory unit 760, an interface unit 770, a control unit 780, and a power supply unit 790.

The body 850 shown in FIG. 13 is in the form of a bar, but is not limited thereto. A slide type, a folder type, and a swing type in which two or more sub-bodies are coupled to be movable relative to each other. It may have various structures, such as a swivel type.

The body 850 may include a case (casing, housing, cover, etc.) forming an appearance. 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 built 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 in which the terminal 200A is located. For example, the wireless communication unit 710 may include a broadcast receiving 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 input unit 720 is for inputting an audio signal or a video signal, and may include a camera 721 and a microphone 722.

The camera 721 may be a camera including the camera module 200 according to the embodiment shown in FIG. 12.

The sensing unit 740 detects the current state of the terminal 200A, such as the open / closed state of the terminal 200A, the position of the terminal 200A, the presence or absence of user contact, the orientation of the terminal 200A, the acceleration / deceleration of the terminal 200A, and the like. Sensing may generate a sensing signal for controlling the operation of the terminal 200A. For example, when the terminal 200A is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, the power supply unit 790 is responsible for the sensing function associated with whether or not the power supply, the interface unit 770 is coupled to the external device.

The input / output unit 750 is for generating an input or output related to sight, hearing, or touch. 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, a sound output module 752, and a touch screen panel 753. The keypad 730 may generate input data by a keypad input.

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

The sound output module 752 may output 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 may be 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 a program for processing and controlling the control unit 780 and stores input / output data (for example, a phone book, a message, an audio, a still image, a picture, a video, etc.). Can be stored temporarily. For example, the memory unit 760 may store an image captured by the camera 721, for example, a picture or a video.

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

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

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

The controller 780 may perform a pattern recognition process for recognizing a writing input or a drawing input performed on a touch screen as text and an image, respectively.

Instead of the control unit 830 of the camera module 200, the control unit 780 of the optical device 200A uses a clock signal SCL, a data signal SDA, and a power signal VDD to perform I2C communication with the position sensor 120. , GND) and a clock signal SCL and a data signal SDA from the position sensor 170.

The power supply unit 790 may be supplied with an external power source or an internal power source under the control of the controller 780 to supply power for 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, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be interpreted that the contents related to such a combination and modification are included in the scope of the present invention.

Claims (16)

A housing including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion;
A bobbin disposed in the housing;
A coil disposed on the bobbin;
A magnet disposed in the housing facing the coil;
A circuit board disposed on one side of the housing and including a position sensor;
A sensing magnet disposed on the bobbin facing the position sensor;
The magnet includes a first magnet disposed in the first corner portion of the housing and a second magnet disposed in the second corner portion facing the first corner portion of the housing,
The position sensor is disposed closer to the third corner than the first corner,
The magnet driving device is not disposed in the third corner portion of the housing. The method of claim 1,
The coil driving apparatus includes a first coil unit facing the first magnet and a second coil unit facing the second magnet. The method of claim 2,
Further comprising a first lower elastic unit, a second lower elastic unit, and a third lower elastic unit coupled to the housing and spaced apart from each other,
One end of the first coil unit is electrically connected to the first lower elastic unit, and the other end of the first coil unit is electrically connected to one end of the third lower elastic unit,
One end of the second coil unit is electrically connected to one end of the second lower elastic unit, the other end of the second coil unit is a lens driving device electrically connected to the other end of the third lower elastic unit. The method of claim 1,
And the circuit board is disposed between the first corner portion and the third corner portion of the housing. The method of claim 2,
A lower elastic member disposed under the housing,
The lower elastic member,
A first lower elastic unit coupled to the third corner portion of the housing;
A second lower elastic unit coupled to the third corner portion of the housing; And
A third lower elastic unit coupled to the fourth corner portion of the housing facing the third corner portion of the housing,
The circuit board includes a first terminal electrically connected to the first lower elastic unit and a second terminal electrically connected to the second lower elastic unit. The method of claim 5,
The lower elastic member does not overlap at least one of the first magnet and the second magnet in the optical axis direction. The method of claim 1,
One side of the bobbin facing the one side of the housing is formed with a protrusion protruding in the direction toward the one side of the housing, the sensing magnet is disposed on the protrusion. The method of claim 7, wherein
And a groove portion on the side of the housing for arranging the protrusion of the bobbin. The method of claim 8,
And at least a portion of the sensing magnet is reduced in width in the one side direction of the housing at the one side of the bobbin. The method of claim 1,
The bobbin includes an opening for mounting the lens,
And a distance from the other side of the housing facing the one side of the housing to the center of the opening of the bobbin is less than the distance from the center of the opening of the bobbin to the one side of the housing. The method of claim 10,
The housing is disposed between a first side portion disposed between the first corner portion and the third corner portion, a second side portion facing the first side portion of the housing, and disposed between the second corner portion and the third corner portion. A third side portion and a fourth side portion disposed between the first corner portion and the fourth corner portion,
And a thickness of each of the third and fourth sides of the housing is greater than a thickness of the second side of the housing. A housing including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion;
A bobbin disposed in the housing;
A coil disposed on the bobbin; And
A magnet disposed facing the coil and disposed in the housing;
The magnet includes a first magnet disposed in the first corner portion of the housing and a second magnet disposed in the second corner portion facing the first corner portion of the housing,
The third corner portion of the housing is adjacent to the first corner portion and faces the fourth corner portion,
The virtual straight line connecting the third corner portion and the fourth corner portion does not overlap the magnet and the coil. A housing including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion;
A bobbin disposed in the housing;
A coil disposed on the bobbin;
A magnet disposed in the housing facing the coil; And
An elastic member coupled to the bobbin and the housing,
The magnet includes a first magnet disposed in the first corner portion of the housing and a second magnet disposed in the second corner portion facing the first corner portion of the housing,
The third corner portion of the housing is adjacent to the first corner portion and faces the fourth corner portion,
The elastic member includes an inner portion coupled to the bobbin, an outer portion coupled to the housing and a connecting portion connecting the inner portion and the outer portion,
And a virtual straight line connecting the third corner portion and the fourth corner portion does not overlap with the inner portion of the elastic member. The method of claim 13,
The virtual straight line connecting the third corner portion and the fourth corner portion does not overlap with the connecting portion. The method of claim 13,
A circuit board disposed between the first corner portion and the third corner portion of the housing; And
Further comprising a position sensor disposed on the circuit board,
The position sensor is disposed adjacent to the third corner portion than the first corner portion of the housing, the lens driving device that the magnet is not disposed in the third corner portion of the housing. A cover member including a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion;
A bobbin disposed in the cover member;
A coil disposed on the bobbin;
A magnet facing the coil and disposed on the cover member;
A circuit board disposed on one inner side of the cover member and including a position sensor;
A sensing magnet disposed on the bobbin facing the position sensor;
The magnet includes a first magnet disposed on the first corner portion of the cover member and a second magnet disposed on the second corner portion facing the first corner portion of the cover member,
The position sensor is disposed closer to the third corner than the first corner,
The magnet driving device is not disposed in the third corner portion of the cover member.

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