KR102568371B1 - Lens moving apparatus - Google Patents

Abstract

The embodiment includes a housing, a bobbin disposed in the housing, a coil disposed on the bobbin, a first magnet disposed so as to overlap the bobbin in a direction perpendicular to the optical axis, an inner frame coupled to the bobbin, an outer frame coupled to the housing, and an inner frame. And an elastic member including a connecting portion connecting the outer frame, and a damper disposed between the housing and the connecting portion, wherein the connecting portion includes a first end coupled to the outer frame and a second end coupled to the inner frame. It includes a connecting portion, and the damper includes a first damper disposed at a position closer to the first end of the first connecting portion than to the second end of the first connecting portion and spaced apart from the inner frame.

Description

Lens driving device {LENS MOVING APPARATUS}

This embodiment relates to a lens driving device.

In recent years, the development of IT products such as mobile phones, smart phones, tablet PCs, and laptops with built-in micro digital cameras has been actively conducted.

In the case of an IT product in which a conventional subminiature digital camera is built-in, a lens driving device that aligns the focal length of the lens by adjusting the distance between an image sensor that converts external light into a digital image or a digital image and a lens is built-in.

The lens driving device includes an upper elastic member and a lower elastic member. The upper elastic member and the lower elastic member may include an inner frame coupled to the bobbin, an outer frame coupled to the housing, and a connecting portion connecting the inner frame and the outer frame. there is.

At this time, the connecting portion may be bent at least once to form a pattern having a predetermined shape, and the bobbin is elastically supported in a rising and/or lowering motion in the first direction in the optical axis direction through a positional change and fine deformation of the connecting portion. It can be.

However, the conventional lens driving device has the following problems.

As described above, when a plurality of constant patterns are formed in the connection part, the above-described patterns may vibrate at a constant frequency when the connection part vibrates, and thus noise or oscillation may occur.

The embodiment aims to reduce noise and eliminate oscillation when driving a motor in a lens driving device.

A lens driving device according to an embodiment includes a housing; a bobbin disposed within the housing; a coil disposed on the bobbin; a first magnet disposed to overlap the bobbin in a direction perpendicular to the optical axis; an elastic member including an inner frame coupled to the bobbin, an outer frame coupled to the housing, and a connecting portion connecting the inner frame and the outer frame; and a damper disposed between the housing and the connection part, wherein the connection part includes a first connection part including a first end coupled to the outer frame and a second end coupled to the inner frame, wherein the damper comprises and a first damper disposed at a position closer to the first end of the first connection part than the second end of the first connection part and spaced apart from the inner frame.

The first damper may be disposed between the first end and the second end of the first connection part. The connection part includes a second connection part including a first end coupled to the outer frame and a second end coupled to the inner frame, and the damper is more than the second end of the second connection part. and a second damper disposed closer to the first end, and the second damper may be disposed closer to the outer frame than to the inner frame.

The first damper may contact the first connection part, and the second damper may contact the second connection part.

The first connection part may include a first bent part and a second bent part, and a width of a bent region of the first bent part may be different from a width of a bent region of the second bent part.

The first bent part may be disposed closer to the outer frame than the second bent part, and a width of a bent area of the first bent part may be greater than a width of a bent area of the second bent part.

The first connection portion includes a first bent portion and a first portion, the first bent portion includes a portion having a greater width than the first portion, and the first portion of the first connection portion includes the first portion. 1 may be disposed between the first end of the connection part and the first bent part.

The first connecting portion includes a second portion having a width smaller than the width of the portion of the first bent portion, and the second portion of the first connecting portion includes the second end of the first connecting portion and the first portion. It can be placed between the bends.

The second bent portion of the first connection portion may include a portion having a smaller width than the first bent portion. The width of the first portion of the first connection portion may be the same as the width of the second portion of the first connection portion.

The outer frame includes a first hole adjacent to the first end of the first connection portion, the inner frame includes a second hole adjacent to the first end of the first connection portion, and the first damper comprises the It may be more adjacent to the first hole than the second hole.

The lens driving device may include a circuit board electrically connected to the elastic member; a position sensor electrically connected to the cirque circuit board; and a second magnet facing the position sensor, and the coil may be electrically connected to the elastic member.

The first connection part may be disposed opposite to the second connection part based on an optical axis. The width of the portion of the first bent portion is at least 1.2 times the width of the first portion of the first connecting portion, and the width of the first portion of the first connecting portion is 30 micrometers to 60 micrometers. can

A lens driving device according to another embodiment includes a housing; a bobbin disposed within the housing; a coil disposed on the bobbin; a magnet facing the coil; an elastic member including an inner frame coupled to the bobbin, an outer frame coupled to the housing, and a connecting portion connecting the inner frame and the outer frame; and a damper disposed between the housing and the connecting portion, wherein the damper is disposed closer to the outer frame than the inner frame and spaced apart from the inner frame. The damper may contact the connection part and the housing.

A lens driving device according to another embodiment includes a housing; a bobbin disposed within the housing; a magnet disposed in the housing; a coil disposed on the bobbin; an elastic member including an inner frame coupled to the bobbin, an outer frame coupled to the housing, and a connecting portion connecting the inner frame and the outer frame; and a damper disposed between the housing and the connection part, wherein the outer frame includes a first hole adjacent to one end of the connection part, and the inner frame includes a second hole adjacent to the other end of the connection part. The damper is disposed closer to the first hole of the outer frame than to the second hole of the inner frame.

In the lens driving device according to the embodiment, a parasitic region in a connection portion of a damper and an upper elastic member or a lower elastic member may be provided, so that noise may be suppressed and an oscillation phenomenon may be prevented when a vibration motor or the like is driven.

1 is a schematic perspective view of a lens driving device according to an embodiment of the present invention;
2 is a schematic exploded perspective view of a lens driving device according to an embodiment of the present invention;
3 is a schematic perspective view of the lens driving device in FIG. 1 from which the cover member is removed;
Figure 4 is a schematic plan view of Figure 3,
5 is a schematic perspective view of a housing according to one embodiment of the present embodiment;
6 is a schematic perspective view of the housing viewed from an angle different from that of FIG. 5;
7 is a schematic bottom perspective view of a housing according to one embodiment of the present embodiment;
8 is a schematic exploded perspective view of a housing according to one embodiment of the present embodiment;
9a to 9c are schematic plan views of an upper elastic member according to embodiments of the present embodiment,
10A and 10B are schematic plan views of a lower elastic member according to embodiments of the present embodiment,
11a to 11c are views schematically showing the arrangement of dampers according to embodiments of the present embodiment,
12 is a schematic perspective view of a bobbin according to one embodiment of the present embodiment,
13 is a schematic bottom perspective view of the bobbin according to one embodiment of the present embodiment,
14 is a schematic exploded perspective view of a bobbin according to an embodiment of the present embodiment;
15 is a partially enlarged perspective view of FIG. 14;
16 is a partially enlarged bottom view of FIG. 14;
17 is a schematic partially enlarged perspective view of a receiving groove according to an embodiment of the present embodiment;
18 is a schematic longitudinal cross-sectional view of a bobbin according to one embodiment of the present embodiment,
19 is a diagram showing the relationship between gain and phase in a lens driving device according to an embodiment;
20A to 20C are diagrams illustrating an oscillation phenomenon that occurs when a gain is gradually increased in a lens driving device;
FIG. 21 is a diagram showing that the oscillation phenomenon is prevented because the frequency characteristics are different in the lens driving device according to the exemplary embodiment.

Hereinafter, a preferred embodiment of the present embodiment may be described so that those skilled in the art can easily implement it with reference to the accompanying drawings. In the accompanying drawings, it may be noted that the same reference numbers are used as much as possible when indicating the same configuration in other drawings.

In addition, in describing the present embodiment, if it is determined that a detailed description of a related known function or known configuration may unnecessarily obscure the gist of the present embodiment, the detailed description may be omitted. And certain features presented in the drawings are enlarged, reduced, or simplified for ease of explanation, and the drawings and their components are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

For reference, an orthogonal coordinate system (x, y, z) may be used in drawings to be described later. In the drawing, the x-axis and the y-axis mean planes perpendicular to the optical axis, and for convenience, the optical axis direction (z-axis direction) can be referred to as a first direction, an x-axis direction as a second direction, and a y-axis direction as a third direction. . And, hereinafter, the inner or inner direction or inner portion refers to a direction or portion relatively toward the center of the lens drive device based on the plan view of the lens drive device, and the outer or outer direction or outer portion refers to a plan view of the lens drive device. It may refer to a direction or part relatively away from the center of the lens driving device based on .

1 is a schematic perspective view of a lens driving device according to an embodiment of the present invention, FIG. 2 is a schematic exploded perspective view of a lens driving device according to an embodiment of the present embodiment, and FIG. 3 is a cover member in FIG. 1 A schematic perspective view of the removed lens driving device, FIG. 4 is a schematic plan view of FIG. 3, FIG. 5 is a schematic perspective view of a housing according to one embodiment of this embodiment, and FIG. 6 is a housing viewed from a different angle than FIG. is a schematic perspective view of, Figure 7 is a schematic bottom perspective view of the housing according to one embodiment of the present embodiment, Figure 8 is a schematic exploded perspective view of the housing according to one embodiment of the present embodiment, Figures 9a to 9c It is a schematic plan view of an upper elastic member according to one embodiment of this embodiment, FIGS. 10A and 10B are a schematic plan view of a lower elastic member according to one embodiment of this embodiment, and FIGS. 11A to 11C are this embodiment. It is a diagram schematically showing the arrangement of dampers according to example embodiments.

A lens driving device according to the present embodiment is a device that adjusts a distance between a lens and an image sensor in a camera module so that the image sensor is positioned at a focal length of the lens. That is, the lens driving device is a device that performs an auto focusing function.

As shown in FIGS. 1 to 4, the lens driving device 1000 according to the present embodiment is provided in the cover member 300, the upper elastic member 150, the bobbin 110, and the bobbin 110. The coil 120, the housing 140, the driving magnet 130 and the printed circuit board 170 provided in the housing 140, the lower elastic member 160, the base 210, and the bobbin 110 It may include a displacement sensor that determines the amount of displacement in the optical axis direction (ie, the first direction) and a damping unit 410 that serves as an attenuator.

The cover member 300 may have a box shape as a whole and be coupled to the upper portion of the base 210 . The cover member 300 includes an upper elastic member 150, a bobbin 110, a coil 120 provided on the bobbin 110, a housing 140, and the housing in an accommodation space formed together with the base 210. The driving magnet 130 and the printed circuit board 170 provided in the 140 can be accommodated. The driving magnet 130 described above may be referred to as a first magnet, and the sensing magnet 190 described later may be referred to as a second magnet.

The cover member 300 may have an opening on an upper surface through which a lens coupled to the bobbin 110 may be exposed to external light. Further, additionally, a window made of a light-transmitting material may be provided in the opening, thereby preventing foreign matter such as dust or moisture from penetrating into the camera module.

The cover member 300 may include a first groove portion 310 at a lower portion. At this time, as will be described later, when the cover member 300 and the base are coupled, the base 210 is located at a portion in contact with the first groove portion 310 (ie, a position corresponding to the first groove portion 310). 2 grooves 211 may be provided. When the cover member 300 and the base are coupled, a concave portion having a predetermined area may be formed through the coupling of the first groove portion 310 and the second groove portion 211 . An adhesive member having a viscosity may be applied to the concave portion. That is, the adhesive member applied to the concave portion fills the gap between the surfaces of the cover member 300 and the base 210 facing each other through the concave portion, so that the cover member 300 is attached to the base 210 While being coupled with, it is possible to seal between the cover member 300 and the base 210, and also, as the cover member and the base are coupled, the side surface can be sealed.

In addition, a third groove 320 may be formed on a surface of the cover member 300 corresponding to the terminal surface of the printed circuit board 170 so as not to interfere with a plurality of terminals formed on the terminal surface. The third groove portion 320 may be concavely formed on the entire surface facing the terminal surface, and the adhesive member is applied to the inside of the third groove portion to form a cover member 300, a base 210, and a printed circuit board ( 170) can be sealed, and side surfaces can be sealed while the cover member and the base are coupled.

Meanwhile, the first groove portion 310 to the third groove portion 320 are formed on the base 210 and the cover member 300, respectively, but are not limited thereto, and are formed only on the base 210 in a similar shape or , It may be configured to be formed only on the cover member 300.

The base 210 may be provided in a rectangular shape as a whole, and may be combined with the cover member 300 to form an accommodation space for the bobbin 110 and the housing 140 .

A stepped portion protruding outward by a predetermined thickness may be provided to surround the lower rim of the base 210 . The predetermined thickness of the stepped portion is the same as the side thickness of the cover member 300, and when the cover member 300 is coupled to the base 210, the side surface of the cover member 300 is the upper portion of the stepped portion. Or it can be seated or contacted or placed or coupled to the side. Due to this, it is possible to guide the cover member 300 coupled to the upper side of the stepped part, and also, the end of the cover member 300 can be coupled so as to be in surface contact, and the end of the cover member faces the bottom or side surface. can include At this time, the stepped portion and the end of the cover member 300 may be adhesively fixed and sealed with an adhesive or the like.

A second groove part 211 may be formed at a position corresponding to the first groove part 310 of the cover member 300 in the stepped part. As described above, the second groove portion 211 may be combined with the first groove portion 310 of the cover member 300 to form a concave portion and form a space filled with an adhesive member.

The base 210 may have an opening near the center. The opening may be formed at a position corresponding to a position of an image sensor disposed in the camera module.

In addition, the base 210 may include four guide members 216 protruding at right angles to a predetermined height in an upward direction from four corner portions. The guide member may have a polygonal columnar shape. The guide member 216 may be inserted into, fastened to, or coupled to a lower guide groove 148 of the housing 140 to be described later. In this way, due to the guide member 216 and the lower guide groove 148, when the housing 140 is seated or placed on the upper part of the base 210, the housing 140 on the base 210 is coupled. The position can be guided, and at the same time, it is possible to prevent the housing 140 from being deviated from the reference position to be mounted due to vibration during the operation of the lens driving device 100 or due to a worker's mistake during the assembly process.

As shown in FIGS. 4 to 8 , the housing 140 may have a hollow column shape as a whole (for example, a hollow rectangular column shape as shown in the drawings). The housing 140 is configured to support at least two or more driving magnets 130 and the printed circuit board 170, and the bobbin 110 therein is movable in a first direction with respect to the housing 140. The bobbin 110 may be accommodated.

The housing 140 may have four flat sides. A side surface of the housing 140 may have an area corresponding to or larger than that of the driving magnet 130 .

As shown in FIG. 8, each of the opposite side surfaces of the four side surfaces 141 of the housing 140 is provided with a through-hole 141a or a groove for a magnet in which the driving magnet 130 is seated, placed, or fixed. It can be. The magnet through hole 141a or groove may have a size and shape corresponding to that of the driving magnet 130, and may also have a shape capable of guiding. A first driving magnet 131 and a second driving magnet 132, that is, a total of two driving magnets 130 may be mounted in each of the magnet through holes 141a.

And, among the four side surfaces 141 of the housing 140, one side perpendicular to the both side surfaces or a side other than the both side side surfaces has a through-hole for a sensor into which a position sensor 180 to be described later is inserted or disposed or fixed or seated. (141b) may be provided. The sensor through hole 141b preferably has a size and shape corresponding to the position sensor 180 to be described later. In addition, on the one side, at least one mounting protrusion 149 may be provided to allow the printed circuit board 170 to be mounted or placed or temporarily fixed or fixed. The mounting protrusion 149 is inserted into a mounting through-hole 173 formed in a printed circuit board 170, which will be described later. At this time, the mounting through-hole 173 and the mounting protrusion 149 form a form-fit It may be desirable to be combined in a method or an interference fit method, but may also perform only a simple guide function.

Here, among the four side surfaces 141 of the housing 140, the other side facing the one side may be configured as a flat plane, but is not limited thereto.

As a further embodiment of the housing 140, each of the opposite side surfaces facing each other among the four side surfaces 141 of the housing 140 has through-holes for the first and second magnets in which the driving magnet 130 is seated, placed, or fixed. (141a, 141a') may be provided. In addition, among the four side surfaces 141 of the housing 140, one side perpendicular to the both side surfaces or a side other than the both side surfaces is a third magnet through-hole and a sensor formed by being spaced apart from the third magnet through-hole by a predetermined distance. A through hole 141b may be provided. In addition, among the four side surfaces 141 of the housing 140, a through hole for a fourth magnet may be provided on the other side facing the one side.

That is, four through-holes for magnets and one through-hole 141b for sensors may be provided on the four side surfaces 141 of the housing 140 .

At this time, the through-hole 141a for the first magnet and the through-hole 141a' for the second magnet have the same size and shape, and are (almost) identical over the entire lateral length of the side surface of the housing 140. It has a lateral length. On the other hand, the through-hole for the third magnet and the through-hole for the fourth magnet have the same size and shape, and are larger than the through-hole 141a for the first magnet and the through-hole 141a' for the second magnet. The lateral length may be formed small. This is to secure a space for the through-hole 141b for the sensor since the through-hole 141b for the sensor must be formed on one side where the through-hole for the third magnet is formed.

Naturally, each of the first driving magnets 131 to the fourth driving magnets may be seated, disposed, or fixed to each of the through holes for the first magnet through the through hole for the fourth magnet. At this time, similarly, the first driving magnet 131 and the second driving magnet 132 have the same size and shape, and have substantially the same lateral length over the entire lateral length of the side surface of the housing 140. have The third driving magnet and the fourth driving magnet have the same size and shape, and have a smaller lateral length than the first driving magnet 131 and the second driving magnet 132 . can be formed

Here, preferably, the third magnet through-hole and the fourth magnet through-hole may be disposed symmetrically on a straight line with respect to the center of the housing 140 . That is, the third driving magnet 130 and the fourth driving magnet 130 may be disposed symmetrically on a straight line with respect to the center of the housing 140 . If the third driving magnet 130 and the fourth driving magnet 130 are disposed facing each other while being biased to one side regardless of the center of the housing 140, the coil 120 of the bobbin 110 This is because there is a possibility that the bobbin 110 is tilted because the electromagnetic force acts biasedly on the one side. In other words, the third driving magnet 130 and the fourth driving magnet 130 are arranged symmetrically on a straight line with respect to the center of the housing 140, so that the bobbin 110 and the coil 120 ), it is possible to apply unbiased electromagnetic force to guide the movement of the bobbin 110 in the first direction easily and accurately.

In addition, as shown in FIGS. 3 to 6 and 8 , a plurality of first stoppers 143 may protrude from the upper surface of the housing 140 . The first stopper 143 is to prevent a collision between the cover member 300 and the body of the housing 140, and when an external impact occurs, the upper surface of the housing 140 is directly attached to the upper inner surface of the cover member 300. collision can be avoided. In addition, the first stopper 143 may also serve to guide the installation position of the upper elastic member 150. To this end, as shown in FIG. 9A, etc., the first stopper of the upper elastic member 150 A guide groove 155 having a corresponding shape may be formed at a position corresponding to the stopper 143 .

In addition, a plurality of upper frame support protrusions 144 coupled to the outer frame 152 of the upper elastic member 150 may protrude from the upper side of the housing 140 . Meanwhile, as will be described later, a first through hole 152a or a groove having a corresponding shape may be formed in the outer frame 152 of the upper elastic member 150 corresponding to the upper frame support protrusion 144, where It may be fixed with an adhesive or fusion, and the fusion may include thermal fusion or ultrasonic fusion.

In addition, as shown in FIG. 7 , a plurality of lower frame support protrusions 147 coupled to the outer frame 162 of the lower elastic member 160 may protrude from the lower side of the housing 140 . On the other hand, the outer frame 162 of the lower elastic member 160 corresponding to the lower frame support protrusion 147 may be formed with an insertion groove 162a or a hole having a corresponding shape, where adhesive or fusion is used. It may be fixed, and fusion may include thermal fusion or ultrasonic fusion.

The driving magnet 130 may be fixed to the magnet through hole 141a with an adhesive, but is not limited thereto, and an adhesive member such as double-sided tape may be used. Alternatively, as a modified embodiment, a concave-shaped magnet seat may be formed on the inner surface of the housing 140 instead of the through hole 141a for the magnet, and the magnet seat may be formed in a size and shape of the driving magnet 130. It may have a corresponding size and shape.

The driving magnet 130 may be installed at a position corresponding to the coil 120 provided on the bobbin 110 . In addition, the driving magnet 130 may be composed of one body, and in the case of the present embodiment, the side facing the coil 120 of the bobbin 110 may be arranged to have the N pole and the outer side to have the S pole. there is. However, it is not limited thereto, and a converse configuration is also possible. In addition, the driving magnet 130 may be divided into two planes perpendicular to the optical axis.

The driving magnet 130 is composed of a rectangular parallelepiped shape having a certain width, and is seated in the magnet through hole 141a or groove so that the wide surface of the driving magnet 130 is part of the side surface of the housing 140. can form At this time, driving magnets 130 facing each other may be installed parallel to each other. In addition, the driving magnet 130 may be disposed to face the coil 120 of the bobbin 110 . At this time, surfaces of the driving magnet 130 and the coil 120 of the bobbin 110 facing each other may be flatly arranged so as to be parallel to each other. However, it is not limited thereto, and depending on the design, only one of the driving magnet 130 and the coil 120 of the bobbin 110 may be a flat surface, and the other may be a curved surface. Alternatively, the facing surfaces of the coil 120 of the bobbin 110 and the driving magnet 130 may all be curved surfaces, and at this time, the facing surfaces of the coil 120 of the bobbin 110 and the driving magnet 130 The curvature of the surface may be formed to be the same.

As described above, one side of the housing 140 is provided with a through-hole 141b or a groove for a sensor, and a position sensor 180 is inserted, placed, or seated in the through-hole 141b for a sensor, The position detection sensor 180 is electrically coupled to one surface of the printed circuit board 170 by soldering or soldering. In other words, the printed circuit board 170 may be fixed, supported, or disposed on an outer surface of one of the four side surfaces 141 of the housing where the sensor through-hole 141b or groove is provided.

The position sensor 180 may be a displacement sensor that determines a first displacement value of the bobbin 110 in the first direction together with a sensing magnet 190 of the bobbin 110 to be described later. To this end, the position sensor 180 and the sensor through hole 141b or groove may be disposed at a position corresponding to the position of the sensing magnet 190 .

The position detection sensor 180 may be a sensor that detects a change in magnetic force emitted from the sensing magnet 190 of the bobbin 110 . Also, the position detection sensor 180 may be a Hall sensor. However, this is an example, and this embodiment is not limited to the Hall sensor, and any sensor capable of detecting a change in magnetic force can be used, and any sensor capable of detecting a position other than magnetic force can be used. For example, a method using a photo reflector or the like is also possible.

The printed circuit board 170 is coupled to or disposed on one side of the housing 140, and may have a mounting through hole 173 or a groove as described above. Due to this, the installation position of the printed circuit board 170 may be guided by the mounting protrusion 149 provided on one side of the housing 140 .

In addition, the printed circuit board 170 is provided with a plurality of terminals 171, and receives external power to supply current to the coil 120 and the position sensor 180 of the bobbin 110. The number of terminals 171 formed on the printed circuit board 170 may be increased or decreased according to the types of components requiring control. On the other hand, according to this embodiment, the printed circuit board 170 may be provided with FPCB.

The printed circuit board 170 may include a controller that readjusts the amount of current applied to the coil 120 based on the first displacement value sensed by the displacement sensor, that is, the controller controls the printed circuit board It is mounted on (170). In addition, in another embodiment, the control unit may be mounted on a separate board without mounting on the printed circuit board 170, which may be a board on which an image sensor of a camera module is mounted or may be a separate board. .

The actuator driving distance may be further calibrated based on the Hall voltage difference for the change in magnet flux (ie, magnetic flux density) detected by the Hall sensor.

The bobbin 110 may be configured to reciprocate in the first axial direction with respect to the housing 140 fixed in the first axial direction. An auto focusing function may be executed due to movement of the bobbin 110 in the first axial direction.

Regarding the bobbin 110, it may be described in more detail with reference to the drawings below.

Meanwhile, the upper elastic member 150 and the lower elastic member 160 may elastically support an upward and/or downward motion of the bobbin 110 in the optical axis direction. The upper elastic member 150 and the lower elastic member 160 may be provided as leaf springs.

As shown in FIGS. 2 to 4 and 9A to 11C, the upper elastic member 150 and the lower elastic member 160 are coupled to the bobbin 110, the inner frames 151 and 161 and the housing 140 It may include connecting parts 153 and 163 connecting the outer frames 152 and 162 coupled with the inner frames 151 and 161 and the outer frames 152 and 162 .

The connection parts 153 and 163 may be bent at least once to form a pattern having a predetermined shape. The bobbin 110 may be elastically (or elastically) supported in an upward and/or downward motion in the first direction in the optical axis direction through a change in position and fine deformation of the connecting parts 153 and 163 .

According to this embodiment, as shown in FIG. 9A , the upper elastic member 150 has a plurality of first through-holes 152a in the outer frame 152 and a plurality of second through-holes in the inner frame 151. (151a) may be provided.

The first through hole 152a is coupled to an upper frame support protrusion 144 provided on the upper surface of the housing 140, and the second through hole 151a or groove is formed on the upper surface of the bobbin 110 to be described later. It may be combined with the provided upper support protrusion. That is, the outer frame 152 is fixed and coupled to the housing 140 through the first through hole 152a, and the inner frame 151 is fixed to the bobbin 110 through the second through hole 151a or groove. and may be combined.

The connection part 153 may connect the inner frame 151 and the outer frame 152 such that the inner frame 151 is elastically deformable in a first direction within a predetermined range with respect to the outer frame 152. . That is, the connection part 153 elastically connects the inner frame 151 fixed or coupled to the upper surface of the bobbin 110 and the outer frame 152 fixed or coupled to the upper surface of the housing 140. , so that the bobbin 110 and the housing 140, which are separated as separate parts, can be elastically connected at the top by the upper elastic member 150.

At least one of the inner frame 151 and the outer frame 152 of the upper elastic member 150 has a terminal portion electrically connected to at least one of the coil 120 of the bobbin 110 and the printed circuit board 170. At least one may be provided.

The connection part 153 may have an irregular width rather than a constant width. In FIG. 9A , the connection part 153 may include a second area 153a having a wider width than other areas. The remaining area of the connecting portion 153 excluding the second area 153a may be referred to as a first area, and the above-described second area 153a and the second area 163a described later may be referred to as a parasitic area. there is.

In FIG. 9A , the width W ₁ of the first region of the connection part 153 may be 30 micrometers to 60 micrometers, and the width W ₂ of the second region 153a is the width W ₁ of the first region 153a. ) may be more than 1.2 times but less than 2 times.

A plurality of connecting parts 153 may be provided. In FIG. 9A, four connecting parts 153 connecting the inner frame 151 and the outer frame 152 are provided, and the shapes of the four connecting parts 153 are the same. It may be symmetrical with respect to the center of the inner frame 151 or the outer frame 152 .

In the illustrated embodiments, each of the connecting portions 153 is formed with a pattern bent three times. In FIG. 9A, one pattern forms the second area 153a and is wider than the other area, and in FIG. 9B, two patterns are formed. This second area 153a is wider than other areas, and three patterns form the second area 153a in FIG. 9C.

As shown in FIG. 10A and the like, the lower elastic member 160 has a plurality of insertion grooves 162a or holes in the outer frame 162, and a plurality of third through holes 161a or grooves can be provided.

The insertion groove 162a or hole is coupled with the lower frame supporting protrusion 147 provided on the lower surface of the housing 140, and the third through hole 161a or groove is the lower surface of the bobbin 110 to be described later. It can be coupled with the lower support protrusion 114 provided in. That is, the outer frame 162 is fixed and coupled to the housing 140 through the insertion groove 162a or hole, and the inner frame 161 is attached to the bobbin 110 through the third through hole 161a or groove. Can be fixed and combined.

The connecting portion 163 may connect the inner frame 161 and the outer frame 162 such that the inner frame 161 is elastically deformable in a first direction within a predetermined range with respect to the outer frame 162. . That is, the connection part 163 elastically connects the inner frame 161 fixed or coupled to the lower surface of the bobbin 110 and the outer frame 162 fixed or coupled to the lower surface of the housing 140. , and thus, the bobbin 110 and the housing 140, which are separated as separate parts, can be elastically connected at the bottom by the lower elastic member 160.

As shown in FIG. 10A , the lower elastic member 160 may include a first lower elastic member 160a and a second lower elastic member 160b separated from each other. Through this two-part structure, the lower elastic member 160 can receive power of different polarity or different power from each other to the first lower elastic member 160a and the second lower elastic member 160b. That is, after the inner frame 161 and the outer frame 162 are coupled to the bobbin 110 and the housing 140, respectively, the inner frame corresponding to both end lines of the coil 120 disposed on the bobbin 110. By providing a solder part at the position of the solder part, it is possible to receive power of different polarities or different powers by performing a conductive connection such as soldering in the solder part. In addition, the first lower elastic member is electrically connected to one of both end lines of the coil, and the other of the both end lines of the coil and the second lower elastic member are electrically connected to apply current and/or voltage from the outside. can receive

Meanwhile, the upper elastic member 150 and the lower elastic member 160, the bobbin 110, and the housing 140 may be assembled through thermal fusion and/or bonding using an adhesive. At this time, it is possible to finish the fixing work by bonding using an adhesive after fixing by thermal fusion according to the assembly sequence.

As a modified embodiment, the upper elastic member 150 may be configured as a two-part structure, and the lower elastic member 160 may be configured as an integral structure.

At least one of the inner frame 161 and the outer frame 162 of the lower elastic member 160 has a terminal portion electrically connected to at least one of the coil 120 of the bobbin 110 and the printed circuit board 170. At least one may be provided.

The damping unit 410 may serve as an attenuator for absorbing vibration in an optical axis direction generated during lens driving of the lens driving device 100 or auto focusing operation. The damping unit 410 is between a stationary body fixed in its original position without moving during the auto focusing operation of the lens driving device 100 and/or a moving body moving in the optical axis direction during the auto focusing operation of the lens driving device 100. can be provided in The fixed body may be, for example, the outer frame of the cover member 300, the housing 140, the base 210, or the upper elastic member 150 and/or the lower elastic member 160, etc., and the mobile body may be the bobbin 110, or a lens, or a coil, or an inner frame of the upper elastic member 150 and/or the lower elastic member 160.

In FIG. 10A , the width (d ₁ ) of the first region of the connection portion 163 may be 30 micrometers to 60 micrometers, and the width (d ₂ ) of the second region 163a is the width (d _{1 )} of the first region. ) may be more than 1.2 times but less than 2 times.

A plurality of connecting parts 163 may be provided. In FIG. 10A , four connecting parts 163 connecting the inner frame 161 and the outer frame 162 are provided, and the shape of the four connecting parts 163 is the same. It may be symmetrical with respect to the center of the inner frame 161 or the outer frame 162 .

In the illustrated embodiments, each of the connecting portions 163 is formed with a pattern bent twice. In FIG. 10A, one pattern forms the second area 163a and is wider than the other area, and in FIG. 10B, two patterns are formed. This second area 163a is formed.

11A to 11C are diagrams schematically illustrating the arrangement of dampers according to exemplary embodiments of the present invention.

In FIGS. 11A and 11B, a damper 158 is disposed while connecting the housing and the connection part 153. The damper 158 is made of silicon and is disposed in contact with one pattern constituting the connection part 153, or FIG. 11C As such, it may be placed in contact with all three patterns constituting the connecting portion 153.

And, in FIGS. 11A to 11C , the dampers 158 are all disposed at each connection part 153 and may be disposed symmetrically with respect to the center of the inner frame 151 or the outer frame 152 .

12 is a schematic perspective view of a bobbin according to an embodiment of the present embodiment, FIG. 13 is a schematic bottom perspective view of a bobbin according to an embodiment of the present embodiment, and FIG. 14 is a bobbin according to an embodiment of the present embodiment. A schematic exploded perspective view, Figure 15 is a partially enlarged perspective view of Figure 14, Figure 16 is a partially enlarged bottom view of Figure 14, Figure 17 is a schematic partial enlarged perspective view of a receiving groove according to one embodiment of this embodiment, 18 is a schematic longitudinal cross-sectional view of a bobbin according to one embodiment of the present embodiment.

As shown in FIGS. 12 to 18 , the bobbin 110 may be installed in the inner space of the housing 140 to be reciprocally movable in the optical axis direction. A coil 120, which will be described later, is installed on the outer circumferential surface of the bobbin 110 to enable electromagnetic interaction with the driving magnet 130 of the housing 140, so that the electrons of the coil 120 and the driving magnet 130 The mechanical interaction may cause the bobbin 110 to reciprocate in the first direction. In addition, the bobbin 110 is elastically (or elastically) supported by the upper elastic member 150 and the lower elastic member 160, and moves in the first direction, which is the optical axis direction, to perform an auto focusing function. .

Although not shown, the bobbin 110 may include a lens barrel (not shown) in which at least one lens is installed, but the lens barrel is a component of a camera module to be described later and is an essential component of the lens driving device. may not be an element. The lens barrel can be coupled to the inside of the bobbin 110 in various ways. For example, a female screw thread may be formed on an inner circumferential surface of the bobbin 110 and a male screw thread corresponding to the screw thread may be formed on an outer circumferential surface of the lens barrel, and the lens barrel may be coupled to the bobbin 110 by screwing of the female screw thread. However, this is not limited thereto, and the lens barrel may be directly fixed to the inside of the bobbin 110 by a method other than screw coupling without forming a thread on the inner circumferential surface of the bobbin 110 . Alternatively, the one or more lenses may be integrally formed with the bobbin 110 without a lens barrel. The lens coupled to the lens barrel may be composed of one sheet, or two or more lenses may form an optical system.

In addition, a plurality of upper support protrusions 113 and a plurality of lower support protrusions 114 may protrude from the upper and lower surfaces of the bobbin 110 .

As shown in FIG. 12 , the upper support protrusion may be provided in a cylindrical shape or a prismatic shape, and may couple and fix the inner frame 151 of the upper elastic member 150 and the bobbin 110 . According to the present embodiment, a second through hole 151a or a groove may be formed at a position corresponding to the upper support protrusion of the inner frame 151 of the upper elastic member 150 . In this case, the upper support protrusion and the second through hole 151a or the groove may be fixed by thermal fusion or by an adhesive material such as epoxy. In addition, a plurality of upper support protrusions may be provided. At this time, the distance between each of the upper support protrusions may be appropriately arranged within a range in which interference with neighboring parts can be avoided. That is, each upper support protrusion may be arranged at regular intervals symmetrically with respect to the center of the bobbin 110, and their intervals are not constant, but are symmetrical with respect to a specific imaginary line passing through the center of the bobbin 110. may be formed.

As shown in FIG. 13, the lower support protrusion 114 may be provided in a cylindrical shape or a prismatic shape like the upper support protrusion, and the inner frame 161 and the bobbin 110 of the lower elastic member 160 are provided. Can be combined and fixed. According to this embodiment, a third through hole 161a or a groove may be formed at a position corresponding to the lower support protrusion 114 of the inner frame 161 of the lower elastic member 160 . At this time, the lower support protrusion 114 and the third through hole 161a or groove may be fixed by thermal fusion or by an adhesive material such as epoxy. In addition, a plurality of lower support protrusions 114 as shown in FIG. 13 may be provided. At this time, the distance between each of the lower support protrusions 114 may be appropriately arranged within a range in which interference with neighboring parts can be avoided. That is, each of the lower support protrusions 114 may be arranged at regular intervals symmetrically with respect to the center of the bobbin 110 .

And, on the upper and lower surfaces of the bobbin 110, upper escape grooves 112 and A lower escape groove 118 is formed.

Since the upper escape groove 112 and the lower escape groove 118 are provided, when the bobbin 110 moves in the first direction with respect to the housing 140, the connection parts 153 and 163 and the bobbin 110 have a spatial relationship. By removing the interference, the elastic deformation of the connecting parts 153 and 163 can be more easily performed. In addition, the location of the upper escape groove may be disposed at the corner of the housing as in the embodiment, but may also be disposed at the side depending on the shape and/or position of the connecting portion of the elastic member.

In addition, the outer circumferential surface of the bobbin 110 may be provided with a seating groove 116 for a coil in which the coil 120 is installed, but only a seating portion may be provided.

The coil 120 may be provided as a ring-shaped coil block inserted into and coupled to the outer circumferential surface of the bobbin 110 or the seating groove 116 for the coil or the seating portion, but is not limited thereto, and the coil 120 It is also possible to directly wind the outer circumferential surface of the bobbin 110 or the seating groove 116 for the coil or the seating portion.

According to this embodiment, the coil 120 may be formed in an approximately octagonal shape as shown in FIG. 14 . This corresponds to the shape of the outer circumferential surface of the bobbin 110, and the bobbin 110 may also be provided in an octagonal shape. In addition, at least four sides of the coil 120 may be provided in straight lines, and corner portions connecting these sides may be formed in round or straight lines. At this time, the portion formed as a straight line may be formed to be a surface corresponding to the driving magnet 130 . Also, a surface of the driving magnet 130 corresponding to the coil 120 may have the same curvature as that of the coil 120 . That is, if the coil 120 is straight, the corresponding side of the driving magnet 130 may be a straight line, and if the coil 120 is curved, the corresponding side of the driving magnet 130 may be curved. and may have the same curvature. Also, even if the coil 120 is curved, the corresponding side of the driving magnet 130 may be straight or vice versa.

The coil 120 is for moving the bobbin 110 in the direction of the optical axis to perform an autofocus function, and when current is supplied, it can form electromagnetic force through electromagnetic interaction with the driving magnet 130. The electromagnetic force may move the bobbin 110.

On the other hand, the coil 120 may be configured to correspond to the driving magnet 130. As shown, the driving magnet 130 is composed of a single body and the entire surface facing the coil 120 has the same polarity. , the coil 120 may also be configured such that a surface corresponding to the driving magnet 130 has the same polarity. On the other hand, although not shown, if the driving magnet 130 is divided into two on a plane perpendicular to the optical axis and the plane facing the coil 120 is divided into two or more, the coil 120 is also divided It is also possible to be divided into a number corresponding to the driving magnet 130 .

Also, the bobbin 110 may include a sensing magnet 190 included in a displacement sensor together with the position sensor 180 of the housing 140 described above. The magnet 190 for sensing may be fixed, arranged, or coupled to the bobbin 110 . Due to this, the sensing magnet 190 may move in the first direction by the same displacement as the bobbin 110 when the bobbin 110 moves in the first direction. In addition, the sensing magnet 190 may be configured as one body, and may be arranged so that the upper direction of the bobbin 110 is the N pole and the lower direction of the bobbin 110 is the S pole. However, it is not limited thereto, and a converse configuration is also possible. In addition, the sensing magnet 190 may be divided into two in a plane perpendicular to the optical axis.

Here, as shown in FIGS. 14 to 18 , the bobbin 110 may have an accommodation groove 117 for accommodating the sensing magnet 190 on an outer circumferential surface of the bobbin 110 .

The receiving groove 117 may be formed from an outer surface of the bobbin 110 to an inner direction of the bobbin 110 at a predetermined depth.

Specifically, the accommodating groove 117 may be formed on one side of the bobbin 110 such that at least a portion of the accommodating groove 117 is located inside the coil 120 . In addition, at least a portion of the accommodating groove 117 may be formed to be recessed to a predetermined depth in the inner direction of the bobbin 110 more than the seating groove 116 for the coil. In this way, by forming the accommodating groove 117 toward the inside of the bobbin 110, the sensing magnet 190 can be accommodated inside the bobbin 110, and as a result, a separate sensor for the sensing magnet 190 can be accommodated. Since there is no need to secure an installation space, space efficiency of the bobbin 110 can be improved.

In particular, the accommodation groove 117 may be disposed at a position corresponding to the position of the position detection sensor 180 of the housing 140 (or a position opposite to the position detection sensor 180). Due to this, the distance between the sensing magnet 190 and the position sensor 180 is the thickness of the coil 120 and the separation distance between the coil 120 and the position sensor 180, or here the coil and the position sensor Since the distance can be further included and minimized to the distance, the magnetic force detection accuracy of the position sensor 180 can be improved.

The accommodating groove 117 may have an opening 119 communicating with the accommodating groove 117 on one of the lower surface and the upper surface of the bobbin 110 . For example, as shown in FIG. 18, in the receiving groove 117, a part of the lower surface of the bobbin 110 is opened to form an opening 119, and the opening 119 is the receiving groove 117 can form the entrance of A magnet 190 for sensing may be inserted, disposed, or fixed through the opening 119 and separated through the opening 119 .

More specifically, as shown in FIGS. 16 to 18, the receiving groove 117 has an inner surface on which one surface of the sensing magnet 190 is supported, and a predetermined distance from the inner surface so that an adhesive can be injected. It may include an adhesive groove 117b concavely formed deeper inward.

The inner surface is one surface located in an inward direction toward the center of the bobbin 110, and when the sensing magnet 190 has a rectangular parallelepiped shape, the wide surface of the sensing magnet 190 is contacted or seated. am.

The bonding groove 117b may be a groove formed by deeply concave a portion of the inner surface in an inward direction toward the center of the bobbin 110 . Preferably, the bonding groove 117b may be formed from the opening 119 to an inner surface of the bobbin 110 on which one surface of the sensing magnet 190 is in contact with or seated on or disposed.

As shown in FIG. 18, the bonding groove 117b may further include a first additional groove 117c formed longer than the length of the sensing magnet 190 in the vertical thickness direction of the bobbin 110. can That is, the first additional groove 117c is an extension of the adhesive groove 117b which is formed to be more deeply concave than the inner surface of the bobbin 110 on which the back surface of the sensing magnet 190 is contacted, seated or disposed. am. By providing the first additional groove 117c, when the adhesive is injected into the adhesive groove 117b through the opening 119, the adhesive is filled from the first additional groove 117c to cover the inside of the adhesive groove 117b. Since it is filled, it is possible to prevent the adhesive from overflowing in the bonding groove 117b and flowing to the coil 120 along the gap between the sensing magnet 190 and the receiving groove 117, so the sensing magnet 190 ) It is possible to reduce the defect rate of the lens driving device 100 during the coupling process.

The adhesive groove 117b may further include a second additional groove 117a formed at a predetermined depth in an inward direction from the opening 119 toward the center of the bobbin 110 . That is, the second additional groove 117a may be formed deeper in an inward direction toward the center of the bobbin 110 than the inner surface in the vicinity of the opening 119 . The second additional groove 117a communicates with the bonding groove 117b. In other words, the second additional groove 117a is an extension of the bonding groove 117b. In this way, by providing the second additional groove 117a, since the adhesive can be injected into the bonding groove 117b through the second additional groove 117a, the adhesive overflows near the opening 119 to form a coil ( 120) and other elements of the bobbin 110 can be prevented from being adhered to, thus reducing the occurrence rate of defects in the lens driving device 100 during the coupling process of the sensing magnet 190.

As a modified embodiment, the second additional groove 117a may be provided on the bobbin 110 alone without the adhesive groove 117b. In this case, the bobbin 110 and the sensing magnet 190 may be combined and fixed by injecting the adhesive into the second additional groove 117a.

Also, the bonding groove 117b may include at least one of the first additional groove 117c and the second additional groove 117a. That is, the bonding groove 117b may include only the first additional groove 117c or only the second additional groove 117a.

As a modified embodiment, in the receiving groove, the depth between the inner surface on which one surface (ie, wide surface) of the sensing magnet is supported and the outer circumferential surface (ie, the surface of the seating groove for coil) provided with the coil is It may be less than or equal to the thickness of the dragon magnet. Due to this, the magnet for sensing may be fixed in the receiving groove by the inner pressing force of the coil due to winding of the coil. In this case, there is no need to use adhesive.

As an additional embodiment, although not shown in the drawing, the bobbin 110 is symmetrical to the receiving groove 117 with respect to the center of the bobbin 110 on the outer circumferential surface facing the outer circumferential surface on which the receiving groove 117 is formed. It may further include an additional accommodation groove 117 formed on the outer circumferential surface of the bobbin 110 at the position, and a weight balance member accommodated in the additional accommodation groove 117.

That is, the additional receiving groove 117 is a bobbin with a predetermined depth at a position symmetrical to the receiving groove 117 in a straight line based on the center of the bobbin 110 on the outer circumferential surface facing the outer circumferential surface where the receiving groove 117 is formed. It may be formed in the inward direction of (110). And, the weight balance member is fixed and coupled in the additional receiving groove 117, and has the same weight as the magnetic force sensing member.

In this way, by providing the additional accommodating groove 117 and the weight balancing member, the weight imbalance in the horizontal direction of the bobbin 110 due to the provision of the accommodating groove 117 and the sensing magnet 190 is reduced by mounting the weight balancing member. can compensate

Also, the additional receiving groove 117 may include at least one of the adhesive groove 117b, the first additional groove 117c, and the second additional groove 117a.

19 is a diagram showing a relationship between gain and phase in a lens driving device according to an embodiment. In the embodiment, when a parasitic region in a connection part between a damper and an upper elastic member or a lower elastic member is provided, ' In regions indicated by 'A' and 'B', a peak value may be lowered and a frequency change may occur, so that noise may be suppressed and an oscillation phenomenon may be prevented when a vibration motor or the like is driven.

20a to 20c show an oscillation phenomenon that occurs when the gain is gradually increased in the lens driving device, and in FIG. 21, as in the embodiment, a parasitic region in the connection part of the damper and the upper elastic member or the lower elastic member is provided, and the frequency characteristics It is shown that the oscillation phenomenon is prevented by changing.

In addition, it may include a lens driving device configured as described above, a lens barrel coupled to the bobbin, an image sensor, and a printed circuit board. In this case, the printed circuit board is mounted with an image sensor, and may form a bottom surface of the camera module.

The bobbin may include a lens barrel in which at least one lens is installed, and the lens barrel may be formed to be screwed into the bobbin. However, this is not limited, and although not shown, the lens barrel may be directly fixed to the inside of the bobbin by a method other than screw coupling, or the one or more lenses may be integrally formed with the bobbin without the lens barrel. The lens may be composed of one sheet, or two or more lenses may form an optical system.

In the base, an infrared cut filter may be additionally installed at a position corresponding to the image sensor, and may be combined with the housing. In addition, the lower side of the housing may be supported. A separate terminal member may be installed on the base to conduct electricity with the printed circuit board, or the terminal may be integrally formed using a surface electrode or the like. Meanwhile, the base may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed downward along a side surface of the base. However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed under the base to perform its role.

Although illustrated and described as a specific embodiment to illustrate the technical idea of the present embodiment above, this embodiment is not limited to the same configuration and operation as the specific embodiment as described above, and various modifications do not deviate from the scope of the present embodiment. can be carried out within Accordingly, such modifications should be regarded as belonging to the scope of the present embodiment, and the scope of the present embodiment may be determined by the claims described later.

Although illustrated and described as a specific embodiment to illustrate the technical idea of the present embodiment above, this embodiment is not limited to the same configuration and operation as the specific embodiment as described above, and various modifications do not deviate from the scope of the present embodiment. can be carried out within Accordingly, such modifications should be regarded as belonging to the scope of the present embodiment, and the scope of the present embodiment may be determined by the claims described later.

100: lens driving device 110: bobbin
120: coil 130: driving magnet
140: housing 150: upper elastic member
153, 163: connection part 160: lower elastic member
170: printed circuit board 180: position detection sensor
190: magnet for sensing 210: base
300: cover member 410: damping unit

Claims (17)

housing;
a bobbin disposed within the housing;
a coil disposed on the bobbin;
a magnet arranged to overlap the bobbin in a direction perpendicular to the optical axis; and
an elastic member coupled to the bobbin and the housing, including an inner frame coupled to the bobbin, an outer frame coupled to the housing, and a connecting portion connecting the inner frame and the outer frame;
a damper disposed between the housing and the connection part;
A position sensor for detecting the position of the bobbin and
Including a magnet for sensing facing the position sensor,
The connection part includes a first connection part and a second connection part adjacent to the first connection part,
The first connection part includes a first end directly connected to the outer frame and a second end directly connected to the inner frame,
The second connection part includes a first end directly connected to the outer frame and a second end directly connected to the inner frame,
The magnet for sensing is disposed in a first region of a side surface of the bobbin,
The damper includes a first damper in contact with the first connection portion and a second damper in contact with the second connection portion,
the first damper is in contact with a region of the first connection portion that is closer to the outer frame than the inner frame and is closer to the first end of the first connection portion than to the second end of the first connection portion;
The first damper is spaced apart from the inner frame and the outer frame,
The second damper is a lens driving device spaced apart from the inner frame and the outer frame. According to claim 1,
The first damper is a lens driving device disposed between the first end and the second end of the first connection part. According to claim 1,
The first damper is a lens driving device spaced apart from the second connection portion. According to claim 1,
The second connection part includes one end coupled to the outer frame of the elastic member and the other end coupled to the inner frame of the elastic member,
The second damper is disposed closer to the first end of the second connection than the second end of the second connection,
The second damper is disposed closer to the outer frame of the elastic member than to the inner frame of the elastic member,
The second damper is a lens driving device spaced apart from the first connecting portion. According to claim 1,
The inner frame is coupled to an upper portion of the bobbin, and the outer frame is coupled to an upper portion of the housing. According to claim 1,
The second damper is a lens driving device disposed between the housing and the second connecting portion. According to claim 1,
The first connecting portion includes a first portion spaced apart from the first end and the second end. According to claim 1,
The second damper is closer to the outer frame than to the inner frame, and the lens drive contacts a region of the second connection portion that is more adjacent to the first end of the second connection portion than to the second end of the second connection portion. Device. According to claim 1,
The outer frame includes a first hole adjacent to the first end of the first connection portion, and the inner frame includes a second hole adjacent to the first end of the first connection portion;
The first damper is a lens driving device that is more adjacent to the first hole than the second hole. According to claim 9,
The lens driving apparatus of claim 1 , wherein the first hole of the outer frame is disposed closer to the first end than to the second end of the first connecting portion. According to claim 9,
The first damper is disposed closer to the first end of the first connecting portion than to the second hole. According to claim 1,
a circuit board electrically connected to the elastic member;
a position sensor electrically connected to the circuit board; and
And a second magnet facing the position sensor,
The coil is a lens driving device electrically connected to the elastic member. According to claim 1,
The first connection unit is disposed on the opposite side of the second connection unit with respect to an optical axis. According to claim 1,
The first connection part includes a first area and a second area having a width greater than the width of the first area, and the first damper is disposed in the second area of the first connection part. delete delete housing;
a bobbin disposed within the housing;
a coil disposed on the bobbin;
a magnet disposed in the housing;
an upper elastic member coupled to an upper side of the bobbin;
a lower elastic member coupled to the lower side of the bobbin;
a damper disposed between the housing and the upper elastic member;
a sensing magnet disposed on a side surface of the bobbin;
a position sensor facing the sensing magnet; and
Including a substrate on which the position sensor is disposed,
The upper elastic member includes an inner frame coupled to the bobbin, an outer frame coupled to the housing, and a connecting portion connecting the inner frame and the outer frame,
The connection part of the upper elastic member includes a first connection part and a second connection part spaced apart from the first connection part,
The outer frame of the upper elastic member includes a first hole closest to one end of the first connection part and a second hole closest to one end of the second connection part,
The inner frame includes a third hole closest to the other end of the first connection part and a fourth hole closest to the other end of the second connection part,
The damper includes a first damper and a second damper,
The first damper is in contact with a partial area of the first connection portion closer to the third hole of the outer frame than the first hole of the inner frame and is spaced apart from the inner frame;
The second damper contacts a partial area of the second connection portion closer to the fourth hole of the outer frame than the second hole of the inner frame and is spaced apart from the inner frame;
the substrate is disposed on a side surface of the housing and includes a plurality of terminals;
The lower elastic member is soldered and electrically connected to at least one of the plurality of terminals of the coil and the substrate.