KR20220054773A - Lens moving unit and camera module having the same - Google Patents

Abstract

In accordance with the present embodiment, a lens driving device includes: a base; a circuit board installed on an upper side of the base, and having a first coil installed on an upper side thereof; a bobbin having a second coil wound on the outer circumference surface thereof, and installed to be moved up and down with respect to an optic axis; a holder member in which a magnet is placed to be opposed to the first and second coils on different sides; a support member having one end connected with the base, and having the other end connected with the holder member to support a motion in a direction vertical to the optic axis of the holder member; upper and lower elastic members having one end connected to the bobbin and having the other end connected to the holder member to elastically support the bobbin in an optic axis direction; and a damping member applied to the periphery of a corner of the lower elastic member to be exposed to the periphery of a corner of the holder member. Therefore, the present invention is capable of mitigating an increase in the instability of feedback control.

Description

A lens driving device and a camera module having the same {Lens moving unit and camera module having the same}

The present embodiment relates to a lens driving device and a camera module having the same.

The camera module includes an image sensor and a printed circuit board on which an image sensor that transmits electrical signals is mounted, an infrared cut-off filter that blocks light in an infrared region to the image sensor, and at least one or more lenses that transmit an image to the image sensor. It may include an optical system consisting of. In this case, a lens driving device capable of performing an auto-focusing function and a hand-shake correction function may be installed in the optical system.

The lens driving device can be configured in various ways, and a voice coil unit motor is generally used a lot. The voice coil unit motor operates by electromagnetic interaction of the coil unit wound on the outer circumferential surface of the bobbin in which the magnet fixed to the housing and the lens barrel are coupled to perform the auto-focusing function. Such an actuator module of the voice coil motor type may reciprocate in a direction parallel to the optical axis while the bobbin moving up and down is elastically supported by the lower and upper elastic members.

During auto-focusing and hand-shake correction of the camera module, a problem may occur in the control of the lens driving device depending on the vibration frequency of the elastic member.

As such, the lens driving device requires a means for controlling the oscillation phenomenon of the driver, and when excessive, the setting time becomes slow, and a problem of lowering the auto-focusing speed may occur.

(Patent Document 1) US 2013-0050828 A1

The present embodiment provides a lens driving device having auto-focusing and hand-shake correction functions capable of accurately receiving feedback on position information of a bobbin and a holder member, and a camera module having the same.

The lens driving device according to the present embodiment includes a base; a circuit board installed on the upper side of the base and having a first coil installed on the upper surface; a bobbin having a second coil wound on the outer circumferential surface, and installed so as to be able to rise and fall with respect to the optical axis; a holder member on which magnets are disposed to face the first and second coils on different surfaces; a support member having one end connected to the base and the other end connected to the holder member to support movement of the holder member in a direction perpendicular to the optical axis; upper and lower elastic members having one end connected to the bobbin and the other end connected to the holder member to elastically support the bobbin in the optical axis direction; and a damping member applied near the edge of the lower elastic member and exposed near the edge of the holder member.

The damping member may be symmetrically applied to the vicinity of four corners of the circuit board and the holder member.

The damping member may be applied at two locations in the vicinity of the four corners of the circuit board, respectively.

According to the first embodiment, the damping member may be applied so as not to interfere with the support member.

According to the second embodiment, the damping member may be applied to connect the support member and the lower elastic member.

The lower elastic member may have a concave groove formed at an end facing the support member.

The concave groove portion may surround the circumferential surface of the support member, and may be spaced apart from each other by a predetermined distance.

The damping member may be applied to both the concave groove portion and the support member to connect the lower elastic member to the support member.

The support member is composed of a wire member, and may be installed in two pieces at each corner of the circuit board and the holder member.

The camera module according to the present embodiment includes an image sensor; a printed circuit board on which the image sensor is mounted; and a lens driving device configured as described above.

According to the present embodiment as described above, the gain is suppressed through the addition of the damping member, or the Q value is lowered so that the phase change becomes gentle. It is possible to improve the point that the instability of control increases, and it is possible to reduce the peak of the resonant frequency and suppress the second, third, and fourth resonant frequencies.

1 is a perspective view of a lens driving device according to the present embodiment;
Figure 2 is an enlarged view of the main part of Figure 1;
3 is a plan view showing a lower elastic member according to the present embodiment;
4 and 5 are perspective views showing a damping member arrangement position according to the first and second embodiments, and
FIG. 6 is a graph showing the resonant frequency gain change rate before and after applying the damping member according to the present embodiment.

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

Fig. 1 is a perspective view of a lens driving device according to this embodiment, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3 is a plan view showing a lower elastic member according to this embodiment, and Figs. 4 and 5 are first and second A perspective view showing the arrangement position of the damping member according to the second embodiment, and FIG. 6 is a graph showing the resonant frequency gain change rate before and after the damping member according to the present embodiment is applied.

Hereinafter, either one of the “first coil 21” and the “second coil” may be referred to as a “first coil” and the other may be referred to as a “second coil”.

The lens driving device according to this embodiment may include first and second lens driving units, the first lens driving unit may be a lens driving unit for autofocus, and the second lens driving unit may be a lens driving unit for image stabilization. there is.

The first lens driving unit may include a base 10 , a bobbin 30 , and a holder member 40 .

At least one circuit board 20 may be installed on the upper side of the base 10 , and a first coil 21 for operating the second lens driving unit may be installed on the circuit board 20 . The first coil 21 may have a coil pattern formed directly on the circuit board 20 , or may be formed on a separate FP coil and stacked on the circuit board 20 . According to the present embodiment, the first coil 21 may include a pattern coil or the like. In addition, forming the outer periphery of the camera module, as shown, may further include a cover member so that the holder member 40 for supporting a plurality of magnets can be disposed inside. In addition, the base 10 may be coupled to the cover member.

The bobbin 30 may be installed to be reciprocally movable in the optical axis direction in the inner space of the cover member. The bobbin 30 may have a second coil installed in a coil seating portion formed on the outer circumferential surface, and the second coil moves the bobbin 30 to the optical axis by electromagnetic interaction with a plurality of magnets 41 to be described later. It can be raised and lowered in a parallel direction.

The bobbin 30 may have upper and lower elastic members 60 and 70 installed at upper and lower portions, respectively. One end of the upper elastic member 60 may be connected to the bobbin 30 , and the other end may be coupled to the holder member 40 . However, the present invention is not limited thereto, and may be coupled to the cover member if necessary. When coupled to the holder member 40 , it may be coupled to the upper surface or the lower surface of the holder member 40 . One end of the lower elastic member 70 may be connected to the bobbin 30 , and the other end may be coupled to the upper surface of the base 10 or the lower surface of the holder member 40 . In addition, a protrusion for coupling the lower elastic member 70 may be formed on the lower side of the base 10 , and a hole or a recess is formed at a corresponding position of the lower elastic member 70 so that their The lower elastic member 70 may be fixed by coupling, and rotation may be prevented. In addition, an adhesive member or the like may be added for rigid fixation, and the projection and the elastic member may be coupled by thermal fusion or the like.

On the other hand, the lower elastic member 70 is provided with two leaf springs in a two-part structure, and the upper elastic member 60 is composed of one body, and may serve as a terminal to receive current. That is, the current applied through the terminal 21a of FIG. 1 is transmitted through the two springs of the lower elastic member 70 , and this current may be applied to the second coil wound around the bobbin 30 . To this end, the lower elastic member 70 and the second coil may be electrically connected to each other by soldering or the like. Here, the upper elastic member includes an outer portion coupled to the holder member 40, an inner portion coupled to the bobbin, and a connection portion connecting the inner portion and the outer portion, and the inner portion is electrically connected to both ends of the second coil through soldering, etc. can be connected That is, the two springs and both ends of the second coil may be electrically connected to each other by soldering, Ag epoxy, welding, conductive epoxy, or the like. However, the present invention is not limited thereto, and on the contrary, the lower elastic member 70 is formed in a two-part structure, and it is also possible that the upper elastic member 60 is integrally configured. Alternatively, the upper elastic member 60 may be formed to be divided into four or more.

Bidirectional movement of the bobbin 30 in the optical axis direction may be elastically supported by the upper and lower elastic members 60 and 70 . That is, since the bobbin 30 is spaced apart from the holder member 40 by a predetermined distance, the movement of the bobbin 30 in the upper and lower directions can be controlled based on the initial position of the bobbin 30 . In addition, the initial position of the bobbin 30 may be brought into contact with the lower or upper portion of the holder member 40 to control movement only upward based on the initial position of the bobbin 30 .

3 is a plan view showing the shape of the lower elastic member 70 according to the present embodiment.

As shown, the lower elastic member 70 may have a fixing piece 71 formed near the corners of four places. The fixing piece 71 may be provided in a plate shape, and may be provided at each corner, and a pair of extensions may be extended to be perpendicular to each other at the ends to form an opening. Interference with the support member 50 can be prevented through the configuration of the opening.

A concave groove portion 1000 may be formed at an end of the extension portion of the fixing piece 71 . The concave groove portion 1000 may be provided in a semicircular shape, but is not limited thereto, and is spaced apart from the support member 50 by a certain distance so as not to contact the support member 50 and may be formed to wrap a part or the circumference of the support member 50 . can Alternatively, although not shown, a through hole is provided instead of the concave groove portion 1000, and it is also possible for the support member 50 to be described later to be coupled therethrough. In this case, the diameter of the through hole is formed to be relatively larger than that of the support member 50, so that the support member 50 and the inner circumferential surface of the through hole may be spaced apart from each other by a certain distance or more.

Meanwhile, the second coil may be provided as a ring-shaped coil block coupled to the outer circumferential surface of the bobbin 30 . However, the present invention is not limited thereto, and the coil may be directly wound on the outer circumferential surface of the bobbin 30 . The second coil may be installed at a position close to the lower surface of the bobbin 30 , and may include a straight surface and a curved surface according to the shape of the bobbin 30 .

Alternatively, the second coil formed of the coil block may have an angular shape or an octagonal shape. That is, all of the straight surfaces may be formed without a curved surface. This is in consideration of the electromagnetic action with the magnet 41 disposed to face each other. If the corresponding surface of the magnet 41 is flat, the electromagnetic force can be maximized when the face of the facing second coil is flat. However, the present invention is not limited thereto, and the surface of the magnet 41 and the surface of the second coil may be all curved, all flat, or one curved surface and the other flat surface according to design specifications.

In addition, the bobbin 30 includes a first surface formed flat on a surface corresponding to the straight surface and a second surface formed to be rounded on a surface corresponding to the curved surface so that the second coil can be coupled to the outer peripheral surface. may be included, but the second surface may be a flat surface.

The holder member 40 may be configured as a frame having a substantially hexahedral shape, and a through hole is formed in the upper part and the lower part. A coupling structure for coupling the upper and lower elastic members 60 and 70 may be provided on the upper and lower surfaces of the holder member 40, respectively, and magnets 41 are provided on the bottom surfaces of the four side walls or the four corners. can be installed. At this time, the magnet 41 may be disposed at a position facing the first coil 21 to be described later. In the present embodiment, the lower elastic member 70 from the base 10 is greater than the distance from the base to the magnet 41 . ), the lower elastic member 70 may be coupled to the holder member 40 at a greater distance. The distance from the base 10 to the holder member 40 is greater than the distance from the base 10 to the lower elastic member 70 , and the lower elastic member 70 is coupled to the lower surface of the holder member 40 . can be In this case, the magnet 41 may be fixed or coupled to the holder member 40 .

On the other hand, in the case of an auto focusing unit, not a hand shake correction unit, unlike the embodiment, there may be only a cover member without a separate holder member 40 . The cover member (not shown) may be formed of a metal material, which is a ferromagnetic material such as iron. In addition, the cover member may be provided in a rectangular shape when viewed from the upper side so as to cover all of the bobbin 30 . In this case, the cover member may have a quadrangular shape or may be provided in an octagonal shape although not shown.

The first lens driving unit may be configured as described above, and may be replaced with an optical system that implements other types of auto-focusing functions in addition to the above-described configuration. That is, it is also possible to configure an optical module using a single-lens moving actuator or a refractive index variable actuator instead of using a voice coil motor-type auto-focusing actuator. That is, any optical actuator capable of performing an auto-focusing function may be used as the first lens driving unit.

Meanwhile, the second lens driving unit is a lens driving unit for hand-shake correction, and may include a first lens driving unit, a base 10 , a support member 50 , a circuit board 20 , and a damping member 2000 .

The base 10 may be configured as described above, and the circuit board 20 may be mounted thereon.

The circuit board 20 may include a first circuit board on which a position detection sensor can be installed, and a second circuit board 22 on which the first coil 21 is disposed. However, the present invention is not limited thereto, and the first and second circuit boards may be configured as a single circuit board. In this embodiment, the first circuit board and the second circuit board 22 are configured separately, and the second circuit board 22 may be formed of an FP coil that is a pattern coil. In this case, the second circuit board 22 on which the first coil 21 is disposed is disposed on the first circuit board, and the first circuit board and the second circuit board 22 are fixed to each other so as to be energized by soldering. can In this case, the circuit board 20 may be provided as an FPCB, and may be installed on the upper surface of the base 10 . The first coil 21 may shift and/or tilt or horizontally move the entire first lens driving unit in a plane direction perpendicular to the optical axis through interaction with the magnet 41 . The first coil 21 is disposed at a position corresponding to the bottom surface of the magnet 41 in a patterned coil manner on the circuit board 20 . For example, the magnet 41 is disposed on each wall portion of the holder member 40 . When installed, the first coil 21 may be disposed on each side of the circuit board 20 corresponding to each other. In this embodiment, four first coils 21 may be disposed to face the magnets 41 . However, this is not limited thereto, and two may be disposed to face each other, or at least four or more may be disposed. In addition, the first coil 21 facing the magnet 41 may be composed of two instead of one.

In addition, although not shown, at least one position sensor is installed on the surface facing the base 10 on the circuit board 20 , and the X-axis direction (or first direction) movement of the holder member 40 and the Y An axial (or second direction) movement may be detected. In this case, the first and second directions mean a diagonal direction orthogonal to the above-described X-axis and Y-axis directions. The position sensor is not limited to being installed on the circuit board 20 as described above. That is, the position sensor may be disposed or mounted directly on the base 10 , and in this case, a circuit pattern may be formed on the surface of the base 10 to be electrically connected to a camera circuit board to be described later. The position sensor detects the magnetic field of the magnet 41 to detect a direction perpendicular to the optical axis of the holder member 40 in which the magnet 41 is installed.

Meanwhile, in the lens driving device according to the present embodiment, a stopper 100 may be disposed on the upper surface of the holder member 40 to minimize damage to the support member 50 when a sudden external shock occurs.

A plurality of stoppers 100 may protrude from the upper surface of the holder member 40 as shown in FIG. 1 . According to the present embodiment, the stopper 100 may be disposed approximately in the vicinity of the center of each surface of the holder member 40 . However, this is not limited thereto, and if necessary, it is possible to arrange two on each side. The stopper 100 may be provided in a hexahedral shape, and the upper surface may be configured to be flat.

The support member 50 is composed of a wire member, and may be installed two at each corner of the circuit board 20 and the holder member 40 . One end of the support member 50 is coupled to the outer side of the upper elastic member, and the other end may be coupled to the second circuit board 22 or the circuit board 20 or the base 10, and in some cases, a combination is also possible. . In addition, when the other end of the support member 50 is coupled, electrically coupled, or soldered to the second circuit board 22 , a separate hole may not be formed in the second circuit board 22 . On the other hand, the upper elastic member to which the support member 50 is connected is provided in a two-part structure, and receives power through the support member 50 to perform auto-focusing driving. In this case, the support member 50 may be electrically connected to the circuit board 20 and the second circuit board 22 , or electrically connected to a printed circuit board (not shown) to supply power to the auto-focusing unit. .

As shown in FIG. 4 or 5 , the damping member 2000 may be applied near the edge of the lower elastic member 70 to be exposed near the edge of the holder member 40 . At this time, the damping member 2000 may be applied to the corners of the circuit board 20 and the holder member 40 symmetrically. It can be applied so as to be symmetrical in two places, respectively. In another embodiment, if there are four support members, it may be applied in each of the four places in the vicinity of the corners. Alternatively, even if there are 8 support members, only 4 places may be applied. Also, although not shown, the damping member 2000 may be applied to the upper elastic member 60 side.

According to the first embodiment, the damping member 2000 may be applied so as not to interfere with the support member 50 as shown in FIG. 4 . In this case, one end may contact the bottom surface of the fixing piece 71 of the lower elastic member 70 , and the other end may contact the circuit board 20 and/or the upper surface of the base. In this case, the support member 50 and the damping member 2000 may be spaced apart from each other by a predetermined distance. Meanwhile, although not shown, the concave groove portion 1000 may be provided in the form of a through hole, and in this case, the support member 50 may be disposed to pass through the through hole.

In addition, the fixing piece 71 may not form the concave groove portion 1000 , or in order to exclude interference with the support member 50 , the separation distance between the fixing piece 71 and the support member 50 is sufficiently spaced apart. can do it In addition, the separation distance between the fixing piece 71 and the second circuit board 22 on which the first coil 21 is disposed may be formed within 0.08 mm to 5 mm, more preferably from 0.1 mm to 0.4 mm. may be, and more preferably 0.2 mm to 0.3 mm. If the separation distance is less than 0.08 mm, the movement time of the holder member 40 by the damping member 2000 is delayed, and the driving time may be prolonged, If it is larger than 5 mm, it is difficult to move the holder member 40 and control the amount of the damping member, so that the damper effect may be greatly reduced. In this case, the vertical distance between the magnet and the second circuit board 22 on which the first coil 21 is disposed may be 0.03 mm to 4.95 mm, and in the embodiment, the second circuit board 22 on which the first coil 21 is disposed is disposed. The separation distance between the fixing piece 71 and the second circuit board 22 on which the first coil 21 is disposed may be greater than the vertical distance between the circuit board 22 and the magnet.

According to the present embodiment as described above, when the damping member 2000 is applied between the magnet and the fixing part, since the damper dispersion control is good, it is possible to more easily control the gain during feedback control. In addition, when the lower elastic member 70 is positioned on the upper side compared to the magnet 41 and the magnet 41 protrudes downward with respect to the holder member 40, the lower elastic member 70 is the holder member 40 ), so that the application position of the damping member 2000 is formed in the exposed space between the holder member 40 and the base 10, the damping member 2000 workability is improved In particular, during curing using ultraviolet rays, ultraviolet rays are sufficiently supplied to the damping member 2000 to prevent curing failure. In addition, since the gap between the parts during the impact test is small, the damper properties of the damping member 2000 change or the damper amount changes very little compared to the initial stage, so the resonance frequency (1,2, It is possible to prevent an oscillation phenomenon from occurring at the 3rd and 4th resonant frequencies).

In addition, since the space in which the damping member 2000 is applied is a narrow space, the displacement amount of the hand shake correcting unit is similar to the displacement amount of the damping member 2000 , so the possibility of deformation of the damping member 2000 is small.

According to the second embodiment, the damping member 2000 may be applied to connect the support member 50 and the lower elastic member 70 as shown in FIG. 5 . That is, the damping member 2000 may be applied to both the concave groove portion 1000 and the support member 50 to connect the lower elastic member to the support member.

Meanwhile, in common with the first and second embodiments, eight support members 50 are provided, and two damping members 2000 are paired at each edge of the holder member 40 and the circuit board 20 side. However, each may be applied to form a symmetry. In another embodiment, when there are four support members 50, each may be applied one at a time in the vicinity of the corners of the four places. Alternatively, even if there are 8 support members, only 4 places may be applied.

Through such a configuration, it is possible to suppress the resonance component of the frequency. The above first and second embodiments are independent and either one may be used, or may be applied at the same time.

Meanwhile, although not shown, in another embodiment, it is also possible to apply the damping member 2000 using a structure such as a plate spring or plate member or a yoke separate from the lower elastic member 70 . For example, in the second embodiment, the support member 50 and the damping member 2000 are applied using a structure such as a plate spring, a plate member, or a yoke instead of the lower elastic member 70 . Alternatively, it is also possible to apply the damping member 2000 between the holder member 40 and the support member by forming a partial shape of the holder member like the shape of the fixing piece 71 of the lower elastic member 70 described above. . In this case, other configurations may be the same as those of the existing lens driving device.

The damping member 2000 may be disposed below the holder member 40 and the support member 50 , and may be applied at a location spaced apart from the end of the support member 50 by a predetermined distance.

6 is a graph showing the resonant frequency gain change rate before and after applying the damping member according to the present embodiment.

As shown in the graph, in the graph (a) of FIG. 6 showing the frequency analysis of the lens driving device when the damping member 2000 according to the present embodiment is not used, it can be confirmed that a peak according to vibration occurs. However, when the damping member 2000 according to the present embodiment is applied, it can be seen that the peak is reduced in the curve of the graph of FIG. .

According to such a configuration, it is possible to solve problems such as insufficient gap during application of the damping member 2000 or increased dispersion for each product due to a failure in adjusting the amount of application of the damping member 2000 .

In particular, since the damping member 2000 is applied to the fixing piece 71 side of the lower elastic member 70, the work is performed on the exposed surface of the lens driving device, so that workability can be improved. That is, while protruding the fixing piece 71 to the outside of the corner portion of the lower elastic member 70 and/or the holder member 40, the upper side of the circuit board 20 and/or the base 10 as a fixing part. By applying the damping member 2000 therebetween, it is possible to easily control the damper effect and dispersion of the damping member 2000 . Alternatively, by applying the damping member 2000 between the fixing piece 71 of the lower elastic member 70 and the supporting member, the damper effect and dispersion of the damping member 2000 can be easily performed.

In addition, by adding the damping member 2000, the gain is suppressed or the Q value is lowered so that the phase change becomes gentle. It is possible to improve the increase in instability, and it is possible to suppress the peak reduction of the resonant frequency and the occurrence of oscillations at the 1st, 2nd, 3rd, and 4th resonant frequencies as much as possible.

Meanwhile, in the first lens driving device configured as described above, the base 10 and the bobbin 30 may be disposed to be spaced apart from each other by a predetermined distance from the initial position. In this case, the upper and lower elastic members may be formed in a flat state in which no preload is applied, or may be formed in a state in which a predetermined preload is applied. In this case, in an initial state in which the bobbin 30 is spaced apart from the base 10 by a predetermined distance, when power is applied, it may rise based on the initial position depending on the direction of the applied current, for example, when a constant current is applied. Also, when a reverse current is applied, it may descend based on the initial position.

In this way, in performing the auto-focusing function by controlling the lifting of the bobbin 30, the present embodiment can confirm the position of the bobbin 30 more accurately by using the sensing magnet, thereby reducing the time required for the auto-focusing operation. can be minimized

The camera module may include a lens driving device configured as described above, a lens barrel coupled to the bobbin 30 , an image sensor, and a printed circuit board. In this case, the printed circuit board may have an image sensor mounted thereon and form a bottom surface of the camera module.

The bobbin 30 may include a lens barrel in which at least one lens is installed, and the lens barrel may be formed to be screw-coupled inside the bobbin 30 . However, the present invention is not limited thereto, and although not shown, the lens barrel may be directly fixed to the inside of the bobbin 30 by a method other than screwing, or the one or more lenses may be integrally formed with the bobbin without a lens barrel. . The lens may be configured as one sheet, or two or more lenses may be configured to form an optical system.

In the base 10 , an infrared cut-off filter may be additionally installed at a position corresponding to the image sensor 11 , and may be coupled to the holder member 40 . In addition, the lower side of the holder member 40 may be supported. A separate terminal member may be installed on the base 10 to conduct electricity with the printed circuit board 10 , and it is also possible to integrally form the terminal using a surface electrode or the like. Meanwhile, the base 10 may function as a sensor holder to protect the image sensor, and in this case, a protrusion may be formed in a downward direction along the side surface of the base 10 . However, this is not an essential configuration, and although not shown, a separate sensor holder may be disposed under the base 10 to perform its role.

Although the embodiments according to the present embodiment have been described above, it will be understood that this is merely an example, and a person skilled in the art will understand that various modifications and equivalent ranges of the embodiments are possible therefrom. Accordingly, the true technical protection scope of this embodiment should be defined by the following claims.

10; base 20; circuit board
21; first coil 30; bobbin
40; holder member 50; support member
60; upper elastic member 70; lower elastic member
71; batten 1000; concave groove
2000; damping member

Claims (15)

a substrate including a second coil;
a holder member disposed on the substrate;
a bobbin disposed in the holder member;
a first coil disposed on the bobbin;
a first magnet disposed on the holder member;
a lower elastic member coupled to the lower side of the bobbin and the holder member; and
a damping member disposed between the lower elastic member and the substrate;
The damping member is a lens driving device in direct contact with the lower elastic member. Base;
a holder member disposed on the base;
a bobbin disposed in the holder member;
a first coil disposed on the bobbin;
a first magnet disposed on the holder member;
a substrate disposed between the base and the holder member and including a second coil;
an elastic member coupled to the bobbin and the holder member;
a support member coupled to the elastic member and the substrate or the elastic member and the base; and
a damping member disposed on the substrate;
The elastic member includes an upper elastic member coupled to an upper side of the bobbin and the support member, and a lower elastic member coupled to a lower side of the bobbin,
The damping member is at least partially disposed between the substrate and the lower elastic member, and is in direct contact with the lower elastic member and the supporting member. Base;
a holder member disposed on the base;
a bobbin disposed in the holder member;
a first coil disposed on the bobbin;
a first magnet disposed on the holder member;
a substrate disposed between the base and the holder member and including a second coil;
an upper elastic member coupled to an upper side of the bobbin and an upper side of the holder member;
a lower elastic member coupled to a lower side of the bobbin and a lower side of the holder member;
a support member coupled to the upper elastic member and the substrate or the upper elastic member and the base; and
a damping member disposed between the lower elastic member and the substrate;
A lower portion of the edge region of the holder member includes an open area in which the damping member and a portion of the upper surface of the substrate are exposed from the holder member,
The damping member includes a first area in direct contact with the lower elastic member and a second area in direct contact with the support member. 4. The method according to any one of claims 1 to 3,
The damping member is a lens driving device in direct contact with the upper surface of the substrate. 4. The method according to any one of claims 1 to 3,
The damping member is a lens driving device in direct contact with a lower surface of the lower elastic member. 4. The method according to any one of claims 1 to 3,
The damping member is disposed on at least two corner regions of the substrate. 4. The method according to any one of claims 1 to 3,
The damping member is a lens driving device respectively disposed in two corner regions positioned on a diagonal line of the substrate. 4. The method according to any one of claims 1 to 3,
The damping member overlaps the holder member in the optical axis direction. According to claim 1,
a support member for supporting the holder member;
The damping member is a lens driving device spaced apart from the support member. 4. The method according to any one of claims 1 to 3,
The first magnet overlaps the first coil in a direction perpendicular to the optical axis direction and the second coil overlaps the optical axis direction in the optical axis direction. 4. The method of claim 2 or 3,
The lower elastic member includes an inner portion coupled to the bobbin, an outer portion coupled to the holder member, and a connection portion connecting the inner portion and the outer portion,
The damping member is a lens driving device in direct contact with the outer portion of the lower elastic member. 12. The method of claim 11,
The outer portion of the lower elastic member includes a fixing piece extending from the holder member toward the support member,
The damping member is a lens driving device connected to the fixing piece. 4. The method of claim 2 or 3,
The damping member is a lens driving device spaced apart from the upper elastic member. 4. The method according to any one of claims 1 to 3,
The damping member is a lens driving device spaced apart from the holder member. printed circuit board;
an image sensor disposed on the printed circuit board;
The lens driving device of any one of claims 1 to 3; and
A camera module including a lens coupled to the bobbin of the lens driving device.

Images