KR102638228B1 - Lens driving unit and camera module including the same - Google Patents

Abstract

One embodiment of the lens driving device includes a bobbin with a first coil installed on the outer peripheral surface; a first magnet facing the first coil; a housing supporting the first magnet; Upper and lower elastic members coupled to the bobbin and the housing; a base disposed at a predetermined distance from the housing; a second coil disposed opposite the first magnet; a circuit board on which the second coil is installed; a plurality of support members movably supporting the housing in second and third directions with respect to the base and connecting at least one of the upper or lower elastic members to the circuit board; And it may include a current conducting member that electrically connects the upper and lower elastic members.

Description

Lens driving unit and camera module including the same}

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

The content described in this section simply provides background information on the embodiments and does not constitute prior art.

Since it is difficult to apply the voice coil motor (VCM) technology used in existing general camera modules to camera modules for ultra-small size and low power consumption, related research has been actively conducted.

In the case of camera modules mounted on small electronic products such as smartphones, the camera module may frequently receive shock during use, and the camera module may slightly shake due to the user's hand tremors during filming. In consideration of this, there has recently been a demand for the development of a technology for additionally installing a camera module to correct image stabilization.

Various means for preventing camera shake are being studied, and there is a need to reduce driving force during camera shake correction and improve the durability of the lens driver and camera module.

Accordingly, the purpose of the embodiment is to provide a lens driving device that can reduce driving force during camera shake correction and has improved durability, and a camera module including the same.

The technical problems to be achieved by the embodiment are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below.

One embodiment of the lens driving device includes a bobbin with a first coil installed on the outer peripheral surface; a first magnet facing the first coil; a housing supporting the first magnet; Upper and lower elastic members coupled to the bobbin and the housing; a base disposed at a predetermined distance from the housing; a second coil disposed opposite the first magnet; a circuit board on which the second coil is installed; a plurality of support members movably supporting the housing in second and third directions with respect to the base and connecting at least one of the upper or lower elastic members to the circuit board; And it may include a current conducting member that electrically connects the upper and lower elastic members.

The upper elastic member may include at least four first to fourth upper elastic members separated from each other, and the energizing member may be provided in at least two pieces so as to be electrically connected to at least two of the upper elastic members separated from each other. there is.

Each of the first to fourth upper elastic members includes a first inner frame coupled to the bobbin; a first outer frame coupled to the housing and connected to the support member; And it may include a first frame connection part connecting the first inner frame and the first outer frame.

The lower elastic member may include at least two first and second lower elastic members that are separated from each other, and the at least two energizing members may be connected to the first and second lower elastic members, respectively.

The first coil may be connected to the plurality of support members through the first and second lower elastic members.

Each of the first and second lower elastic members includes at least one second inner frame coupled to the bobbin; at least one second outer frame coupled to the housing; And it may include a second frame connector connecting the at least one second inner frame and the at least one second outer frame.

The at least one second outer frame includes a plurality of second outer frames, and each of the first and second lower elastic members further includes a 2-2 frame connection portion connecting the plurality of second outer frames. It could be.

The at least four upper elastic members further include fifth and sixth upper elastic members that are separated from each other, each of the fifth and sixth upper elastic members is formed in a direction perpendicular to the first direction, and the energizing member It may include a first protruding frame connected to.

Each of the first and second lower elastic members may be formed at a position opposite to the first protruding frame and may include a second protruding frame connected to the energizing member.

The electricity-conducting member may have an upper end fixedly coupled to the first protruding frame and a lower end fixedly coupled to the second protruding frame.

The lower end of the support member may be fixedly coupled to the circuit board.

The lower end of the support member may be fixedly coupled to the second coil.

The first length corresponding to the length of the current conducting member measured from the lower surface of the upper elastic member to the upper surface of the lower elastic member is the second length corresponding to the length of the support member measured from the lower surface of the upper elastic member to the upper surface of the circuit board. It may be provided shorter than 2 length.

The first length may be 0.3 mm to 0.5 mm.

One embodiment of the lens driving device includes a first sensor that detects displacement of the bobbin in a first direction, and the upper elastic member includes at least four first to fourth upper elastic members separated from each other, , the first sensor may be connected to the plurality of support members through the first to fourth upper elastic members.

The lower elastic member may include at least two first and second lower elastic members separated from each other, and the first coil may be connected to the plurality of support members through the first and second lower elastic members. .

The first sensor may be placed, coupled, or mounted on the bobbin and move together.

One embodiment of the lens driving device includes a sensor substrate coupled to the bobbin, and the first sensor may have a shape that can be placed, coupled, or mounted on the sensor substrate.

One embodiment of the lens driving device includes: a first sensor that detects displacement of the bobbin in a first direction; and a second magnet disposed to face the first sensor, and the first and second magnets may be integrated.

The first sensor and the first magnet may be arranged to face each other so that an imaginary central horizontal line passing through the center of the first sensor and perpendicular to the optical axis coincides with the upper tip of the first magnet.

The bobbin may move up and down in the optical axis direction based on a point where the virtual central horizontal line coincides with the upper tip of the first magnet.

One embodiment of the lens driving device includes: a first sensor that detects displacement of the bobbin in a first direction; and a second magnet disposed to face the first sensor, and the first and second magnets may be separate.

The shape and number of the plurality of support members may be symmetrical to each other in the second and third directions.

The lower elastic member may include at least four first to fourth lower elastic members separated from each other, and the first sensor may be connected to the plurality of support members through the first to fourth lower elastic members. .

One embodiment of the camera module includes the lens driving device described above; and an image sensor mounted on the circuit board.

In an embodiment, the lens driving device and the camera module including the same can accurately detect the displacement of the bobbin by using a sensor for detecting the displacement of the bobbin, and can improve responsiveness by reducing the weight of the housing.

In addition, the lens driving device has the effect of reducing the driving force required when the bobbin is driven in the second and third directions due to the above-described structure. Therefore, the lens driving device has the effect of performing camera shake correction with a small driving force.

Additionally, since excessive driving force is not applied to the support member, the durability of the lens driving device including the support member can be improved.

Figure 1 shows a schematic perspective view of a lens driving device according to an embodiment.
Figure 2 shows an exploded perspective view of the lens driving device illustrated in Figure 1.
FIG. 3 shows a perspective view of a lens driving device according to an embodiment in which the cover member illustrated in FIGS. 1 and 2 is removed.
Figure 4 shows an exploded perspective view of a bobbin, a first coil, a magnet, a first sensor, and a sensor board in a lens driving device according to an embodiment.
FIG. 5A is a plan view of the bobbin and magnet shown in FIG. 4, FIG. 5B is a perspective view of another embodiment of the sensor substrate shown in FIG. 4, and FIG. 5C is an embodiment of the first sensor and sensor substrate shown in FIG. 4. Shows a rear perspective view by .
Figure 6 shows a plan perspective view of a housing according to an embodiment.
Figure 7 shows an exploded perspective view of the bottom of the housing and magnet according to an embodiment.
Figure 8 shows a cross-sectional view taken along line II' shown in Figure 3.
Figure 9 is a graph showing precision according to the optimal position of the first sensor.
Figure 10 shows a plan perspective view of a bobbin, a housing, an upper elastic member, a first sensor, a sensor substrate, and a plurality of support members combined.
Figure 11 shows a bottom perspective view of a bobbin, a housing, a lower elastic member, and a plurality of support members combined.
Figure 12 shows a perspective view of a combination of an upper elastic member, a lower elastic member, a support member, an electric current member, and a circuit board according to an embodiment.
Figure 13 shows a front view of the combination of the upper elastic member, the lower elastic member, the support member, the current conducting member, the circuit board, the bobbin, and the first coil according to the embodiment.
Figure 14 shows an exploded perspective view of the base, second coil, and circuit board.

Hereinafter, the embodiment will be described in detail with reference to the attached drawings. Since the embodiments can be subject to various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the embodiment to a specific disclosed form, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the embodiment. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

Terms such as “first”, “second”, etc. may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. Additionally, terms specifically defined in consideration of the configuration and operation of the embodiment are only for explaining the embodiment and do not limit the scope of the embodiment.

In the description of the embodiment, in the case where each element is described as being formed "on or under", ) includes two elements that are in direct contact with each other or one or more other elements that are formed (indirectly) between the two elements. Additionally, when expressed as “up” or “on or under,” it can include not only the upward direction but also the downward direction based on one element.

In addition, relational terms such as "top/top/top" and "bottom/bottom/bottom" used below do not necessarily require or imply any physical or logical relationship or order between such entities or elements, It may be used only to distinguish one entity or element from another entity or element.

In addition, relational terms such as “first” and “second,” “upper/upper/above” and “lower/lower/bottom” used below refer to any physical or logical relationship or relationship between such entities or elements. It may be used solely to distinguish one entity or element from another, without necessarily requiring or implying order.

In the drawings, the thickness or size of each layer is exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Additionally, the size of each component does not entirely reflect the actual size.

Hereinafter, a lens driving device according to an embodiment will be described as follows with reference to the attached drawings. For convenience of explanation, the lens driving device according to the embodiment is described using a Cartesian coordinate system (x, y, z), but it can also be described using another coordinate system, and the embodiment is not limited to this. In each drawing, the x-axis and y-axis refer to directions perpendicular to the z-axis, which is the optical axis direction. The z-axis direction, which is the optical axis direction, is called the 'first direction', the x-axis direction is called the 'second direction', and the y The axial direction may be referred to as the 'third direction'.

An 'image stabilization device' applied to small camera modules of mobile devices such as smartphones or tablet PCs is a device that prevents the outline of the captured image from being clearly formed due to vibration caused by the user's hand shaking when shooting still images. It may refer to a device configured to do so.

Additionally, an 'autofocusing device' is a device that automatically focuses an image of a subject onto the image sensor surface. Such image stabilization devices and auto-focusing devices can be configured in various ways. The lens driving device according to the embodiment moves the optical module composed of at least one lens in a first direction parallel to the optical axis, or moves the optical module composed of at least one lens in a first direction parallel to the optical axis. An image stabilization operation and/or an auto-focusing operation may be performed by moving about a surface formed by the second and third directions perpendicular to the .

Here, the second and third directions may include directions substantially close to the x-axis and y-axis directions as well as the x-axis and y-axis directions. That is, from the driving aspect of the embodiment, the housing 140 may move parallel to the x-axis and y-axis, but may also move slightly inclined to the x-axis and y-axis when moved while supported by the support member 220. there is.

Figure 1 shows a schematic perspective view of a lens driving device according to an embodiment, and Figure 2 shows an exploded perspective view of the lens driving device illustrated in Figure 1.

Referring to FIGS. 1 and 2 , a lens driving device according to an embodiment may include a first lens driving unit, a second lens driving unit, and a cover member 300.

The first lens driving unit may perform the role of the auto focusing device described above. That is, the first lens driving unit may serve to move the bobbin 110 in the first direction by the interaction between the magnet 130 and the first coil 120.

The second lens driving unit may perform the role of the above-described image stabilization device. That is, the second lens driving unit may serve to move all or part of the first lens driving unit in the second and/or third directions by the interaction between the magnet 130 and the second coil 230. .

The cover member 300 may be provided in a substantially box shape and may surround the first and second lens driving units.

FIG. 3 shows a perspective view of a lens driving device according to an embodiment in which the cover member 300 illustrated in FIGS. 1 and 2 is removed.

The first lens driving unit includes a bobbin 110, a first coil 120, a magnet 130, a housing 140, an upper elastic member 150, and a lower elastic member. (160), it may include a first sensor 170 and a sensor substrate 180.

4 shows a bobbin 110, a first coil 120, a magnet (130; 130-1, 130-2, 130-3, 130-4), and a first sensor 170 in the lens driving device according to the embodiment. ) and an exploded perspective view of the sensor substrate 180.

FIG. 5A shows a top view of the bobbin 110 and magnets 130:130-1, 130-2, 130-3, and 130-4 shown in FIG. 4, and FIG. 5B shows the sensor substrate 180 shown in FIG. 4. ) shows a perspective view according to another embodiment, and FIG. 5C shows a rear perspective view of the first sensor 170 and the sensor substrate 180 shown in FIG. 4 according to an embodiment.

Referring to the above-mentioned drawings, the bobbin 110 may be installed in the internal space of the housing 140 to be movable in a first direction, which is the optical axis direction, or in a direction parallel to the first direction. The first coil 120 is installed on the outer peripheral surface of the bobbin 110 as illustrated in FIG. 4, so that the first coil 120 and the magnet 130 can interact electromagnetically. To this end, the magnet 130 may be disposed around the bobbin 110 to face the first coil 120.

In addition, when the bobbin 110 performs the auto-focusing function by rising and/or falling in the first direction parallel to the optical axis or in the direction parallel to the first direction, the bobbin 110 is elastically moved by the upper and lower elastic members 150 and 160. can be supported. To this end, the upper and lower elastic members 150 and 160 may be combined with the bobbin 110 and the housing 140, as will be described later.

Although not shown, the lens driving device may include a lens barrel (not shown) on which at least one lens can be installed on the inner side (ie, inner side) of the bobbin 110. The lens barrel may be installed inside the bobbin 110 in various ways. For example, the lens barrel may be directly fixed to the inside of the bobbin 110, or a single lens may be formed integrally 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 be configured to form an optical system.

According to another embodiment, although not shown, a female thread is formed on the inner peripheral surface of the bobbin 110, and a male thread corresponding to the female thread is formed on the outer peripheral surface of the lens barrel, and the lens barrel is connected to the bobbin ( 110), but the examples are not limited thereto.

The bobbin 110 may include first and second protrusions 111 and 112.

The first protrusion 111 may include a guide portion 111a and a first stopper 111b. The guide portion 111a may serve to guide the installation position of the upper elastic member 150. For example, as illustrated in FIG. 3 , the guide portion 111a may guide the path along which the first frame connection portion 153 of the upper elastic member 150 passes. To this end, according to an embodiment, a plurality of guide parts 111a may be formed to protrude in second and third directions perpendicular to the first direction. In addition, as illustrated, the guide portion 111a may be provided in a symmetrical structure with respect to the center of the bobbin 110 on the plane formed by the x-axis and y-axis, and unlike the example, interference with other parts is excluded. It may also be provided with an asymmetric structure.

The second protrusion 112 may be formed to protrude in second and third directions perpendicular to the first direction. Additionally, the upper surface 112a of the second protrusion 112 may have a shape on which the first inner frame 151 of the upper elastic member 150, which will be described later, can be seated.

FIG. 6 shows a plan perspective view of the housing 140 according to an embodiment, and FIG. 7 shows an exploded bottom perspective view of the housing 140 and the magnet 130 according to an embodiment.

Referring to FIG. 6, the housing 140 may include a first seating groove 146 formed at a position corresponding to the first and second protrusions 111 and 112.

In addition, the first stopper 111b and the second protrusion 112 of the first protrusion 111 are configured to allow the bobbin 110 to move in a first direction parallel to the optical axis or in a direction parallel to the first direction for the auto-focusing function. When moving, even if the bobbin 110 moves beyond the specified range due to external shock, etc., the bottom surface of the body of the bobbin 110 is prevented from directly colliding with the upper surface of the base 210 and the circuit board 250. can perform its role. To this end, the first stopper 111b may be formed to protrude further than the guide portion 111a in the second or third direction in the circumferential direction from the outer peripheral surface of the bobbin 110, and the second protrusion 112 may also be formed as an upper elastic member. (150) may be formed to protrude further laterally than the upper surface (112a) on which it is seated.

Referring to FIG. 6, when the initial position is set to the state in which the bottom surface of the first and second protrusions 111 and 112 and the bottom surface 146a of the first seating groove 146 are in contact, the auto focusing function operates in the existing position. It can be controlled like one-way control in a voice coil motor (VCM). That is, when current is supplied to the first coil 120, the bobbin 110 rises, and when the supply of current is cut off, the bobbin 120 falls, so that an auto-focusing function can be implemented.

However, if the initial position is set at a position where the bottom surfaces of the first and second protrusions 111 and 112 and the bottom surface 146a of the first seating groove 146 are spaced apart by a certain distance, the auto focusing function is similar to that of the existing voice coil. It can be controlled according to the direction of the current, like bidirectional control in a motor. That is, the auto-focusing function may be implemented by moving the bobbin 110 in an upward or downward direction parallel to the optical axis. For example, when a forward current is applied, the bobbin 110 may move upward, and when a reverse current is applied, the bobbin 110 may move downward.

The third protrusion 148 of the housing 140 may be formed convexly at a position of the housing 140 corresponding to the space having the first width W1 between the first and second protrusions 111 and 112. . The surface of the third protrusion 148 facing the bobbin 110 may have the same shape as the side shape of the bobbin 110. At this time, the first width W1 between the first and second protrusions 111 and 112 shown in FIG. 4 and the second width W2 of the third protrusion 148 shown in FIG. 6 have a certain tolerance. It can be formed as follows. Because of this, rotation of the third protrusion 148 between the first and second protrusions 111 and 112 can be restricted. Then, even if the bobbin 110 receives force in a direction that rotates around the optical axis rather than in the optical axis direction, the third protrusion 148 can prevent the bobbin 110 from rotating.

Meanwhile, according to the embodiment, the first sensor 170 is disposed, coupled, or mounted on the bobbin 110 and can move together with the bobbin 110. The first sensor 170 may detect the displacement of the bobbin 110 in a first direction parallel to the optical axis or in a direction parallel to the first direction, and output the detected result as a feedback signal. Using the result of detecting the displacement in the first direction or a direction parallel to the first direction of the bobbin 110 using a feedback signal, the displacement in the first direction or a direction parallel to the first direction of the bobbin 110 is used. Displacement can be adjusted.

The first sensor 170 may be placed, coupled, or mounted on the bobbin 110 or the housing 140 in various forms. Depending on the form in which the first sensor 170 is placed, coupled, or mounted, the first sensor ( 170) can receive current in various ways.

According to one embodiment, the first sensor 170 may be fastened to the housing 140, and a separate sensor magnet (not shown) facing the first sensor 170 may be placed on the bobbin 110. The first sensor 170 is disposed, coupled, or mounted on the side surface or corner (e.g., the surface of the third protrusion 148) of the first seating groove 146 of the housing 140 illustrated in FIG. 6. It could be. In this case, due to the magnetic force exerted by the separate sensor magnet on the magnet 130, a tilt is caused in the bobbin 110 moving in the first direction, which is the optical axis direction, or in a direction parallel to the first direction, and the accuracy of the feedback signal is reduced. may deteriorate. In consideration of this, a separate sensor magnet may be placed, combined, or mounted at a location on the bobbin 110 where the interaction between the separate sensor magnet and the magnet 130 is minimized.

According to another embodiment, the first sensor 170 may be placed, coupled, or mounted directly on the outer peripheral surface of the bobbin 110. In this case, a surface electrode (not shown) is formed on the outer peripheral surface of the bobbin 110, and the first sensor 170 can receive current through the surface electrode.

According to another embodiment, as shown, the first sensor 170 may be indirectly disposed, coupled, or mounted on the bobbin 110. For example, the first sensor 170 may be disposed, coupled, or mounted on the sensor substrate 180, and the sensor substrate 180 may be coupled to the bobbin 110. That is, the first sensor 170 may be indirectly placed, coupled, or mounted on the bobbin 110 through the sensor board 180.

When the first sensor 170 is placed directly or indirectly on the bobbin 110 as in the above-described other and further embodiments, the sensor magnet may be placed separately from the magnet 130, and the magnet ( 130) can also be used as a magnet for a sensor.

Hereinafter, the first sensor 170 is indirectly placed, coupled, or mounted on the bobbin 110 through the sensor substrate 180, and the magnet 130 is described as being used as a sensor magnet, but the embodiment does not apply to this. It is not limited.

Referring to FIGS. 4 and 5A , a support groove 114 is provided on the side of the bobbin 110, and the sensor substrate 180 can be inserted into the support groove 114 and coupled to the bobbin 110. For example, the sensor substrate 180 may have a ring shape as shown, but the embodiment is not limited to the shape of the sensor substrate 180. The support groove 114 may be provided between the outer peripheral surface of the bobbin 110 and the first and second protrusions 111 and 112. At this time, the first sensor 170 may have a shape that can be placed, coupled, or mounted on the sensor substrate 180. For example, as illustrated in FIGS. 4 and 5B, the first sensor 170 is arranged in various shapes on the upper (A1), middle (A2), or lower (A3) side of the outer peripheral surface of the sensor substrate 180, Can be combined or mounted. At this time, the first sensor 170 may receive current from the outside through the circuit of the sensor board 180. For example, as illustrated in FIG. 5B, a mounting groove 183 is formed on the outer peripheral surface of the sensor substrate 180, and the first sensor 170 can be placed, coupled, or mounted in the mounting groove 183. there is. A tapered inclined surface (not shown) can be formed on at least one side of the mounting groove 183 so that epoxy injection for assembling the first sensor 170 can be performed more smoothly. In addition, separate epoxy, etc. may not be injected into the mounting groove 183, but epoxy, etc. may be injected to increase the placement force, coupling force, or mounting force of the first sensor 170.

Alternatively, as illustrated in FIG. 4 , the first sensor 170 may be supported by being attached to the front of the sensor substrate 180 using an adhesive member such as epoxy or double-sided tape. As illustrated in FIG. 4 , the first sensor 170 may be placed, coupled, or mounted in the center of the sensor substrate 180.

The bobbin 110 may include a receiving groove 116 suitable for receiving the first sensor 170 disposed, coupled, or mounted on the sensor substrate 180. Additionally, the receiving groove 116 may be formed in the space between the first and second protrusions 111 and 112.

The sensor substrate 180 may include a body 182, elastic member contact portions 184-1, 184-2, 184-3, and 184-4, and circuit patterns L1, L2, L3, and L4.

When the support groove 114 formed between the outer peripheral surface of the bobbin 110 and the first and second protrusions 111 and 112 has the same shape as the outer peripheral surface of the bobbin 110, the body inserted into the support groove 114 ( 182) may have a shape that can be inserted into and fixed to the support groove 114. As illustrated in FIGS. 3 to 5A, the support groove 114 and the body 182 may have a circular planar shape, but the embodiment is not limited thereto. According to another embodiment, the support groove 114 and the body 182 may have a polygonal planar shape.

The body 182 of the sensor substrate 180 may include a first segment on which the first sensor 170 is disposed, coupled, or mounted on its outer peripheral surface, and a second segment extending in contact with the first segment. In addition, the sensor substrate 180 can be easily inserted into the support groove 114 by providing an opening 181 in the portion facing the first segment, but the embodiment has a specific shape of the sensor substrate 180. is not limited to

In addition, the elastic member contact portions 184-1, 184-2, 184-3, and 184-4 may contact the first inner frame 151 from the body 182 in a direction, for example, a first direction that is the optical axis direction or It may protrude in a direction parallel to the first direction. The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 are parts connected to the first inner frame 151 of the upper elastic member 150, which will be described later.

The circuit patterns (L1, L2, L3, L4) are formed on the body 182 and electrically connect the first sensor 170 and the elastic member contact portions 184-1, 184-2, 184-3, and 184-4. You can. For example, the first sensor 170 may be a Hall sensor, and any sensor that can detect changes in magnetic force may be used.

If the first sensor 170 is implemented as a Hall sensor, the Hall sensor 170 may have a plurality of pins. For example, the plurality of pins may include first and second pins. For example, referring to FIG. 5C, the first pin may include a 1-1 pin (P11) and a 1-2 pin (P12) connected to voltage and ground, respectively, and the second pin may include the sensed It may include a 2-1 pin (P21) and a 2-2 pin (P22) that output the result. Here, the sensed result, which is a feedback signal output through the 2-1 and 2-2 pins (P21 and P22), may be in the form of a current, but the embodiment is not limited to the form of the feedback signal.

The 1-1, 1-2, 2-1, and 2-2 pins (P11, P12, P21, and P22) of the first sensor 170 are connected through the circuit patterns (L1, L2, L3, and L4). The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 may be electrically connected to each other. For example, referring to FIG. 5C, 1-1, 1-2, and 2-1 are formed by the first, second, third, and fourth lines (L1, L2, L3, and L4), which are circuit patterns. And the 2-2 pins (P11, P12, P21, and P22) are connected to the fourth, third, second, and first elastic member contact portions (184-4, 184-3, 184-1, and 184-2), respectively. You can. According to one embodiment, the first to fourth lines (L1, L2, L3, L4) may be formed to be visible to the naked eye, and according to another embodiment, these (L1, L2, L3, L4) may be visible to the naked eye. It may be formed on the body 182 so that it is not visible.

Figure 8 shows a cross-sectional view taken along line II' shown in Figure 3.

Referring to FIG. 8, the virtual central horizontal line 172 passing through the center of the optical axis direction of the first sensor 170 and formed in the second direction orthogonal to the optical axis coincides with the upper tip 131 of the magnet 130, The first sensor 170 may be placed opposite the magnet 130.

At this time, using the point where the virtual central horizontal line 172 coincides with the upper tip 131 of the magnet 130 as a reference point, the bobbin 110 may move up and down in the first direction, which is the optical axis direction, or in a direction parallel to the first direction. However, the embodiment is not limited to this.

FIG. 9 is a graph showing precision according to the optimal position of the first sensor 170, where the horizontal axis indicates the position of the first sensor 170 and the vertical axis indicates the precision of the first sensor 170.

Referring to FIGS. 8 and 9 , it can be seen that when the virtual central horizontal line 172 is located at the upper tip 131 of the magnet 130, the sensing efficiency of the first sensor 170 is maximized.

Figure 10 shows a plan perspective view of the bobbin 110, the housing 140, the upper elastic member 150, the first sensor 170, the sensor substrate 180, and a plurality of support members 220 combined.

Figure 11 shows a bottom perspective view of the bobbin 110, the housing 140, the lower elastic member 160, and the plurality of support members 220 combined.

Meanwhile, after the first coil 120 is wound on the outer peripheral surface of the bobbin 110 by a worker or a machine, the line of sight and longitudinal lines at both ends of the first coil 120 are respectively oriented in the first direction from the bottom of the bobbin 110. It can be fixed by wrapping around a pair of protruding winding protrusions (119). At this time, the position of the end of the first coil 120 wound around the winding protrusion 119 may vary depending on the operator. As illustrated in FIG. 11, a pair of winding protrusions 119 may be disposed in positions symmetrical with respect to the center of the bobbin 110, but the embodiment is not limited thereto.

As illustrated in FIG. 8 , the first coil 120 may be inserted and coupled to the coil groove 118 formed on the outside of the bobbin 110. Additionally, as illustrated in FIG. 2, the first coil 120 may be provided as an angled ring-shaped coil block, but is not limited thereto. According to another embodiment, the first coil 120 may be wound directly on the outer peripheral surface of the bobbin 110, or may be wound using a coil ring (not shown). Here, the coil ring can be coupled to the bobbin 110 in the same way that the sensor substrate 180 is fixed by being inserted into the support groove 114, and the first coil 120 is wound around the outside of the bobbin 110. Instead of being placed, it can be wound into a coil ring. In either case, the line of sight and longitudinal line of the first coil 120 can be wound and fixed around the winding protrusion 119, and other configurations are the same.

The first coil 120 may be formed into an approximately octagonal shape as shown in FIG. 2 . This corresponds to the shape of the outer peripheral surface of the bobbin 110, because the bobbin 110 has an octagonal shape as illustrated in FIG. 5A. In addition, at least four sides of the first coil 120 may be provided as straight lines, and edge portions connecting these sides may also be provided as straight lines, but this is not limited and may also be formed in a round shape.

The straight portion of the first coil 120 may be formed to be a surface corresponding to the magnet 130. Additionally, the surface of the magnet 130 corresponding to the first coil 120 may have the same curvature as that of the first coil 120. That is, if the first coil 120 is a straight line, the surface of the corresponding magnet 130 may be straight, and if the first coil 120 is curved, the surface of the corresponding magnet 130 may be curved. Additionally, even if the first coil 120 is curved, the surface of the corresponding magnet 130 may be straight, or vice versa.

The first coil 120 is used to perform an autofocus function by moving the bobbin 110 in a first direction parallel to the optical axis or in a direction parallel to the first direction, and interacts with the magnet 130 when current is supplied. Electromagnetic force can be formed through, and the formed electromagnetic force can move the bobbin 110 in the first direction or a direction parallel to the first direction.

The first coil 120 may be configured to correspond to the magnet 130. If the magnet 130 is composed of a single body and the entire surface facing the first coil 120 is provided to have the same polarity, the first coil 120 may be configured to correspond to the magnet 130. 1 The coil 120 may also be configured so that the surface corresponding to the magnet 130 has the same polarity.

Alternatively, if the magnet 130 is divided into 2 or 4 on a side perpendicular to the optical axis and the side facing the first coil 120 is divided into two or more, the first coil 120 is also a divided magnet. It is also possible to divide it into numbers corresponding to (130).

The magnet 130 may be installed at a location corresponding to the first coil 120. For example, referring to FIG. 8 , the magnet 130 may be arranged to face the first sensor 170 and also face the first coil 120. As described above, according to one embodiment, this is a case where the magnet for the first sensor 170 is not separately disposed and the magnet 130 is used as a magnet for the first sensor 170.

In this case, the magnet 130 may be accommodated and supported in the first side 141 of the housing 140, as shown in FIG. 7. The shape of the magnet 130 corresponds to the first side 141 of the housing 140 and may be approximately a rectangular parallelepiped shape, and the surface facing the first coil 120 corresponds to the first coil 120. It can be formed to correspond to the curvature of the surface.

The magnet 130 may be composed of one body. Referring to FIG. 5A in the embodiment, the surface facing the first coil 120 is the S pole 132, and the outer surface is the N pole 134. It can be placed. However, this is not limited, and it is also possible to configure it in the opposite way.

At least two magnets 130 may be installed, and according to the embodiment, four magnets may be installed. At this time, as illustrated in FIG. 5A, the magnet 130 may have a substantially square shape, or alternatively, it may have a triangular or diamond shape.

However, the surface of the magnet 130 facing the first coil 120 may be formed as a straight line, but this is not limited. If the corresponding surface of the first coil 120 is curved, it is a curve having a corresponding curvature. It may be prepared as follows. With this configuration, the distance from the first coil 120 can be kept constant. In the case of the embodiment, one may be installed on each of the four first sides 141 of the housing 140. However, this is not limited, and depending on the design, one of the magnet 130 and the first coil 120 may be flat, and the other may be curved. Alternatively, all facing surfaces of the first coil 120 and the magnet 130 may be curved surfaces, and in this case, the curvatures of the facing surfaces of the first coil 120 and the magnet 130 may be formed to be the same.

As illustrated in FIG. 5A, if the plane of the magnet 130 has a square shape, one pair of the plurality of magnets 130 may be arranged in parallel in the second direction, and the other pair may be arranged in parallel in the third direction. . According to this arrangement structure, it may be possible to control the movement of the housing 140 for hand shake correction, which will be described later.

Meanwhile, the housing 140 may have a polygonal planar shape. According to the embodiment, the outer upper side of the housing 140 has a square planar shape as illustrated in FIG. 6, but as illustrated in FIGS. 6 and 7. Likewise, the lower side of the inner enclosure may have an octagonal plan shape. Accordingly, the housing 140 may include a plurality of sides, for example, four first sides 141 and four second sides 142.

The first side 141 may correspond to a portion where the magnet 130 is installed, and the second side 142 may correspond to a portion where a support member 220, which will be described later, is disposed. The first side portion 141 connects the plurality of second side portions 142 to each other and may include a plane of a certain depth.

According to an embodiment, the first side portion 141 may have an area corresponding to that of the magnet 130 or may be formed to be larger than that of the magnet 130 . Referring to FIG. 7 , the magnet 130 may be fixed to the magnet seating portion 141a formed at the inner lower portion of the first side portion 141. The magnet seating portion 141a may be formed as a groove corresponding to the size of the magnet 130, and may be arranged to face the magnet 130 on at least three sides, that is, both side surfaces and the top surface. An opening may be formed on the bottom surface of the magnet seating portion 141a, that is, on the surface facing the second coil 230, which will be described later, so that the bottom surface of the magnet 130 directly faces the second coil 230. .

The magnet 130 may be fixed to the magnet seating portion 141a with adhesive, but this is not limited, and an adhesive member such as double-sided tape may be used. Alternatively, instead of forming the magnet seating portion 141a as a concave groove as shown in FIG. 7, a portion of the magnet 130 may be formed as a mounting hole into which a part can be exposed or inserted.

The first side 141 may be arranged parallel to the side of the cover member 300. Additionally, the first side 141 may be formed to have a larger surface than the second side 142. The second side 142 may form a path along which the support member 220 passes. The upper portion of the second side 142 may include a first through hole 147 . The support member 220 may pass through the first through hole 147 and be connected to the upper elastic member 150.

Additionally, the housing 140 may further include a second stopper 144. The second stopper 144 can prevent the upper side of the body of the housing 140 from directly colliding with the inner side of the cover member 300 shown in FIG. 1.

Additionally, a plurality of first upper support protrusions 143 may be protruding from the upper surface of the second side 142 of the housing 140. The plurality of first upper support protrusions 143 may have a hemispherical shape as illustrated, or alternatively, may have a cylindrical or prismatic shape, but the embodiment is not limited to the shape of the first upper support protrusion 143. No.

In addition, referring to FIGS. 6 and 7, the reason the first groove 142a is formed in the second side 142 of the housing 140 is not only to form a path through which the support member 220 passes, but also to provide damping. This is to secure space to fill the damping member that can play a role. That is, the groove 142a may be filled with a damping member.

The damping member may be made of photocurable resin. Suitably, the damping member may be made of UV-curable resin, and more suitably, the damping member may be made of UV-curable silicone, and the damping member may be formed in a gel form.

Figure 12 shows a perspective view of the upper elastic member 150, the lower elastic member 160, the support member 220, the current conducting member 154, and the circuit board 250 combined according to an embodiment.

In an embodiment, the lower elastic member 160 may be formed in a two-part structure to apply power to the first coil 120, and the upper elastic member 150 outputs a feedback signal from the first sensor 170. and may be formed in a four-part structure to apply power to the first sensor 170.

In addition, in the embodiment, the first coil 120 is electrically connected to the upper elastic member 150, the lower elastic member 160, and the circuit board 250 and can receive power from the circuit board 250. The specific structure is as follows.

According to the embodiment, the upper elastic member 150 may include at least four first to fourth upper elastic members 150; 150-1, 150-2, 150-3, and 150-4 that are electrically divided from each other. You can. The elastic member contact portions 184-1, 184-2, 184-3, and 184-4 connected to the first sensor 170 include first to fourth upper elastic members 150-1, 150-2, 150-3, It may be connected to a plurality of support members 220 through 150-4). That is, the first upper elastic member 150-1 connected to the elastic member contact portion 184-4 is the first support member 220-1, which is the 1-1 and 1-2 support members 220-1a, 220. The second upper elastic member 150-2 connected to -1b) and connected to the elastic member contact portion 184-3 is connected to the second support member 220-2 and is connected to the elastic member contact portion 184-2. The connected third upper elastic member 150-3 is connected to the 3-1 and 3-2 support members 220-3a and 220-3b, which are the third support member 220-3, and has an elastic member contact portion ( The fourth upper elastic member 150-4 connected to 184-1) may be connected to the fourth support member 220-4.

Each of the first and third upper elastic members 150-1 and 150-3 (150a) includes a first inner frame 151, a 1-1 outer frame 152a, and a first frame connection portion 153. , each of the second and fourth upper elastic members 150-2 and 150-4 (150b) includes a first inner frame 151, a 1-1 outer frame 152b, and a first frame connection portion 153. can do. The first inner frame 151 may be coupled to the bobbin 110 and the corresponding elastic member contact portions 184-1, 184-2, 184-3, and 184-4. As shown in FIG. 4 , when the upper surface 112a of the second protrusion 112 is flat, the first inner frame 151 may be placed on the upper surface 112a and then fixed by an adhesive member. According to another embodiment, when a support protrusion (not shown) is formed on the upper surface 112a as shown in FIG. 4, the support protrusion is formed in the 2-1 through hole 151a formed in the first inner frame 151. After being inserted, it can be fixed by heat fusion or can be fixed with an adhesive member such as epoxy.

The 1-1 outer frames 152a and 152b may be coupled to the housing 140 and connected to the support member 220, and the first frame connection portion 153 may be connected to the first inner frame 151 and the 1-1 outer frame. Frames 152a and 152b can be connected. The 1-1 outer frame 152b has a shape that bisects the 1-1 outer frame 152a, but the embodiment is not limited thereto. That is, according to another embodiment, the 1-1 outer frame 152a may be bisected into the same shape as the 1-1 outer frame 152b.

The first frame connection portion 153 may be bent at least once to form a pattern of a certain shape. Through a change in position and slight deformation of the first frame connector 153, the bobbin 110 can be elastically supported to rise and/or fall in the first direction parallel to the optical axis.

The plurality of first upper support protrusions 143 in the housing 140 can couple and secure the housing 140 with the 1-1 outer frames 152a and 152b of the upper elastic member 150 illustrated in FIG. 12. there is. According to the embodiment, the 2-2 through hole 157 may be formed in the 1-1 outer frames 152a and 152b with a shape corresponding to a position corresponding to the first upper support protrusion 143. At this time, the first upper support protrusion 143 and the 2-2 through hole 157 may be fixed by heat fusion or an adhesive member such as epoxy. In order to fix the plurality of first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4, a sufficient number of first upper support protrusions 143 may be provided. Accordingly, it is possible to prevent the first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4 from being imperfectly coupled to the housing 140.

Additionally, the distance between the plurality of first upper support protrusions 143 may be appropriately arranged within a range that avoids interference with surrounding components. That is, each of the first upper support protrusions 143 may be disposed on the corner side of the housing 140 at regular intervals symmetrically with respect to the center of the bobbin 110, and although their spacing is not constant, the bobbin 110 ) may be arranged to be symmetrical with respect to a specific virtual line passing through the center.

After the first inner frame 151 is coupled to the bobbin 110 and the 1-1 outer frames 152a and 152b are coupled to the housing 140, the elastic member contact portion 184-1 of the sensor substrate 180 , 184-2, 184-3, 184-4) and conductive connections (CP11, CP12, CP13, CP14), such as soldering, to the first inner frame 151 as shown in FIG. 10, thereby forming the first sensor. Power of different polarities is applied to two of the four pins (P11, P12, P21, P22) of (170), and the remaining two pins of the four pins of the first sensor 170 Feedback signals from (P21, P22) can be sent. In order to receive power of different polarities and output feedback signals of different polarities, the upper elastic member 150 includes first to fourth upper elastic members 150-1, 150-2, 150-3, 150-4) can be divided into four.

The first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4 are connected to the circuit board 250 through the support member 220. That is, the first upper elastic member 150-1 is connected to the circuit board 250 through at least one of the 1-1 or 1-2 support members 220-1a and 220-1b, and the second upper elastic member 150-1 The elastic member 150-2 is connected to the circuit board 250 through the second support member 220-2, and the third upper elastic member 150-3 is connected to the 3-1 or 3-2 support member. It is connected to the circuit board 250 through at least one of (220-3a, 220-3b), and the fourth upper elastic member 150-4 is connected to the circuit board 250 through the fourth support member 220-4. can be connected to Accordingly, the first sensor 170 receives power provided from the circuit board 250 through the support member 220 and the upper elastic member 150, or provides a feedback signal output from itself to the circuit board 250. It may be possible.

Meanwhile, the lower elastic member 160 may include first and second lower elastic members 160-1 and 160-2 that are electrically separated from each other. The first coil 120 may be connected to the plurality of support members 220 through the first and second lower elastic members 160-1 and 160-2.

Each of the first and second lower elastic members 160-1 and 160-2 includes at least one second inner frame 161-1 and 161-2 and at least one second outer frame 162-1 and 162-2. 2) and at least one second frame connection part 163-1, 163-2.

The second inner frames 161-1 and 161-2 may be coupled to the bobbin 110, and the second outer frames 162-2 and 162-2 may be coupled to the housing 140. The 2-1 frame connection part 163-1 connects the second inner frame 161-1 and the second outer frame 162-1, and the 2-2 frame connection part 163-2 connects the two second frame connection parts 163-2. 2 The outer frames 162-1 and 162-2 can be connected, and the 2-3 frame connection part 163-3 can connect the second inner frame 161-2 and the second outer frame 162-2. You can.

In addition, the first lower elastic member 160-1 further includes a first coil frame 164-1, and the second lower elastic member 160-2 further includes a second coil frame 164-2. can do. Referring to FIG. 11, the first and second coil frames 164-1 and 164-2 are located on the upper surface at a position close to a pair of winding protrusions 119 where both end lines of the first coil 120 are wound. The end of the first coil 120 is electrically connected by a conductive connecting member such as solder, so that the first and second lower elastic members 160-1 and 160-2 receive power of different polarities to It can be delivered to 1 coil (120). In this way, in order to receive power of different polarities and transmit it to the first coil 120, the lower elastic member 160 is divided into first and second lower elastic members 160-1 and 160-2. It can be.

Additionally, each of the first and second lower elastic members 160-1 and 160-2 may further include a 2-4 frame connection portion 163-4. The 2-4th frame connection part 163-4 may connect the coil frame 164 and the second inner frame 161-2.

At least one of the 2-1st to 2-4th frame connection parts 163-1, 163-2, 163-3, and 163-4 described above may be bent at least once to form a pattern of a certain shape. . In particular, the bobbin 110 moves upward and/or downward in the first direction parallel to the optical axis through a change in position and slight deformation of the 2-1 and 2-3 frame connectors 163-1 and 163-3. It can be supported elastically.

According to one embodiment, as shown, each of the first and second lower elastic members 160-1 and 160-2 may further include a second protruding frame 165. The second protruding frame 165 protrudes from the 2-2 frame connection portion 163-2 and is a portion to which the electricity-conducting member 154 can be fixedly coupled. The upper elastic member 160 may further include fifth and sixth upper elastic members 150-5 and 150-6 that are electrically separated from each other.

Each of the fifth and sixth upper elastic members 150-5 and 150-6 may include a first protruding frame 155 to which the energizing member 154 is fixedly coupled. Meanwhile, the electricity-conducting member 154 is connected to the second protruding frame 165, and its longitudinal direction may be arranged in the first direction.

In addition, the first and second protruding frames 155 and 165 are disposed at positions corresponding to each other in the first direction so that both ends of the energizing member 154 are coupled and the longitudinal direction thereof can be disposed in the first direction. It can be.

Meanwhile, the fifth and sixth upper elastic members 150-5 and 150-6 may be connected to the support member 220, respectively. That is, the fifth upper elastic member 150-5 may be connected to the fifth support member 220-5, and the sixth upper elastic member 150-6 may be connected to the sixth support member 220-6. .

At this time, the second protruding frame 165 may be formed integrally with the first and second lower elastic members 160-1 and 160-2, and similarly, the fifth and sixth upper elastic members 150-5 , 150-6), the first protruding frame 155 may be formed integrally. Additionally, the upper end of the energizing member 154 may be fixedly coupled to the first protruding frame 155, and the lower end of the energizing member 154 may be fixedly coupled to the second protruding frame 165.

At this time, the first and second protruding frames 155 and 165 and the conductive member 154 may be fixedly coupled to each other using soldering, an electrically conductive adhesive, or the like. At this time, in order to firmly couple and facilitate the coupling operation of the first and second protruding frames 155 and 165 and the energizing member 154, each of the first and second protruding frames 155 and 165 is provided with an energizing member 154. A hole or groove into which a can be inserted may be provided.

In this way, each of the first and second lower elastic members 160-1 and 160-2 and the fifth and sixth upper elastic members 150-5 and 150-6 are arranged with their longitudinal direction in the first direction. It can be mechanically and electrically connected by the current conducting member 154.

Meanwhile, the current conducting member 154 is preferably made of a flexible material or an elastic material that can be bent in a direction perpendicular to the longitudinal direction as the bobbin 110 moves in the second and third directions.

At this time, the lower ends of the plurality of support members 220 may be fixedly coupled to the circuit board 250. Alternatively, the lower ends of the plurality of support members 220 may be fixedly coupled to the second coil. Accordingly, even when the bobbin moves in the second or third directions, the lower end may be fixed to the circuit board 250 or the second coil 230 so as not to move.

Additionally, according to another embodiment, unlike what is shown in FIG. 12, a metal piece (not shown) inserted or attached to the housing 140 may be further provided. In this case, for example, the 1-2 outer frame 158 and the 2-2 frame connection part 163-2 may be connected to each other by a metal piece. In this case, the first and second protruding frames 155 and 165 and the energizing member 154 shown in FIG. 12 may be omitted.

Meanwhile, the 1-2 outer frame 158 may further include a 2-2 through hole 157 like the 1-1 outer frame 152b.

According to one embodiment, the 1-1 outer frame (152a, 152b) of the first to sixth upper elastic members (150-1, 150-2, 150-3, 150-4, 150-5, 150-6) ) may be arranged to face each other diagonally, and the first and second outer frames 158 may be arranged to face each other diagonally. That is, the 1-1 outer frame 152a of the first upper elastic member 150-1 and the 1-1 outer frame 152a of the third upper elastic member 150-3 face each other diagonally. can be placed. In addition, the 1-1 outer frame 152b of the second upper elastic member 150-2 and the 1-1 outer frame 152b of the fourth upper elastic member 150-4 face each other diagonally. can be placed. In addition, the 1-2 outer frame 158 of the fifth upper elastic member 150-5 and the 1-2 outer frame 158 of the sixth upper elastic member 150-6 face each other diagonally. can be placed.

Meanwhile, the first and second lower elastic members 160-1 and 160-2 are connected to a plurality of support members 220, and the fifth and sixth upper elastic members 150-5 and 150-6, the first and Power is supplied from the circuit board 250 through the conductive member 154 connecting the second lower elastic members 160-1 and 160-2 and the fifth and sixth upper elastic members 150-5 and 150-6. It can be seen that it is received and provided to the first coil 120. That is, the first lower elastic member 160-1 is connected to the circuit board 250 through the energizing member 154, the sixth upper elastic member 160-6, and the sixth support member 220, and the second lower elastic member 160-1 The lower elastic member 160-2 may be connected to the circuit board 250 through the conductive member 154, the fifth upper elastic member 160-5, and the fifth support member 220-5.

Referring to FIG. 11, a plurality of first lower support protrusions 117 are protruding from the lower surface of the bobbin 110 to support the second inner frames 161-1 and 161-2 of the lower elastic member 160 and the bobbin. (110) can be combined and fixed. A plurality of second lower support protrusions 145 are protruding from the lower surface of the housing 140 to couple the second outer frames 162-1 and 162-2 of the lower elastic member 160 and the housing 140. It can be fixed.

At this time, the number of second lower support protrusions 145 may be greater than that of the first lower support protrusions 117 . This is because the length of the second frame connection part 163-2 of the lower elastic member 160 is longer than the length of the first frame connection part 163-1.

As described above, since the lower elastic member 160 has a structure divided into two, the number of the first and second lower support protrusions 117 and 145 is sufficient, as is the number of the first upper support protrusions 143. By forming a large number, it is possible to prevent a lifting phenomenon that may occur when the lower elastic member 160 is separated.

If the lower elastic member 160 is composed of one body rather than a divided structure, it is not necessary to form as many first and second lower support protrusions 117 and 145 as the first upper support protrusion 143. This is because the lower elastic member 160 can be stably coupled to the housing 140 with only a small number of the first and second lower support protrusions 117 and 145.

However, as in the embodiment, when the lower elastic member 160 is separated into first and second lower elastic members 160-1 and 160-2 so as not to be electrically connected to each other, the separated first and second lower elastic members 160-1 and 160-2 In order to fix the lower elastic members 160-1 and 160-2, a sufficient number of first and second lower support protrusions 117 and 145 may be provided. Accordingly, it is possible to prevent the first and second lower elastic members 160-1 and 160-2 from being imperfectly coupled to the housing 140.

Referring to FIG. 12, according to the embodiment, the first lower support protrusion ( The third through hole 161a may be formed in a shape corresponding to the position corresponding to 117). At this time, the first lower support protrusion 117 and the third through hole 161a may be fixed by heat fusion or an adhesive member such as epoxy.

In addition, the fourth lower support protrusion 145 is located at a position corresponding to the second lower support protrusion 145 in the second outer frames 162-1 and 162-2 of each of the first and second lower elastic members 160-1 and 160-2. A through hole 162a may be formed. At this time, the second lower support protrusion 145 and the fourth through hole 162a may be fixed by heat fusion or an adhesive member such as epoxy.

Additionally, the distance between the plurality of first and second lower support protrusions 117 and 145 may be appropriately arranged within a range that avoids interference with surrounding components. That is, each of the first and second lower support protrusions 117 and 145 may be arranged symmetrically with respect to the center of the bobbin 110 at regular intervals.

Each of the above-described upper and lower elastic members 150 and 160 may be provided as a leaf spring, but the embodiment is not limited to the materials of the upper and lower elastic members 150 and 160.

Meanwhile, the bobbin 110, the housing 140, and the upper and lower elastic members 150 and 160 may be assembled through heat fusion and/or bonding using an adhesive. At this time, the fixing work can be completed by heat fusion fixation according to the assembly sequence and then bonding using an adhesive.

For example, first, the bobbin 110 and the second inner frames 161-1 and 161-2 of the lower elastic member 160 are assembled, and second, the housing 140 and the lower elastic member 160 are assembled. 2 When assembling the outer frames 162-1 and 162-2, the first lower support protrusion 117 of the bobbin 110 and the third through hole 161a coupled to this 117 and the first lower support protrusion 117 of the housing 140 2 The lower support protrusion 145 and the fourth through hole 162a coupled with this 145 may be fixed by heat fusion. Third, when assembling the first inner frame 151 of the upper elastic member 150 first, the elastic member contact portions 184-1, 184-2, 184-3, and 184-4 of the sensor substrate 180 and The first inner frame 151 of each of the first to fourth upper elastic members 150-1, 150-2, 150-3, and 150-4 may be fixed by heat fusion. After that, when fixing the 1-1st and 1-2nd outer frames 152a, 152b, 158 of the housing 140 and the upper elastic member 150 for the fourth and final time, the first upper support of the housing 140 The 2-2 through hole 157 coupled to the protrusion 143 may be bonded by applying an adhesive such as epoxy. However, this assembly sequence can be changed, that is, the first to third assembly processes can be heat fused, and the last fourth step can be fixed by bonding. This can be accompanied by deformation such as distortion during heat fusion, so this can be compensated for through bonding in the final step.

In the case of the above-described embodiment, power is supplied to the first sensor 170 using two electrically separated upper elastic members 160, and the feedback signal output from the first sensor 170 is transmitted to another electrically separated upper elastic member 160. Power can be transmitted to the circuit board 250 using the two upper elastic members 150, and power can be supplied to the first coil 120 using the two electrically separated lower elastic members 160. However, the embodiment is not limited thereto.

That is, according to another embodiment, the roles of the plurality of upper elastic members 150 and the roles of the plurality of lower elastic members 160 may be interchanged. That is, power is supplied to the first coil 120 using the two electrically separated upper elastic members 150, and the first sensor 170 is supplied using the two electrically separated lower elastic members 160. Power may be supplied to and the feedback signal output from the first sensor 170 may be transmitted to the circuit board 250 using the other two lower elastic members 160 that are electrically separated. Although not shown, this is apparent from the foregoing drawings.

Meanwhile, referring to FIGS. 3, 6, 7, 10, and 11, a plurality of third stoppers 149 may be protruding from the side of the housing 140. The third stopper 149 is to prevent collision between the cover member 300 and the body of the housing 140 when the first lens driving unit moves in the second and third directions, and the third stopper 149 is used to prevent the housing 140 from colliding with the body of the housing 140 when an external impact occurs. It is possible to prevent the side surface from colliding directly with the inner surface of the cover member 300. As shown, two third stoppers 149 are arranged at regular intervals on each outer surface of the housing 140, but the embodiment is not limited to the location and number of third stoppers 149.

Although not shown, a fourth stopper may be additionally disposed on the lower side of the housing 140. The fourth stopper may be formed to protrude from the lower surface of the housing 140. The fourth stopper can prevent the bottom surface of the housing 140 from colliding with the base 210 and/or the circuit board 250, which will be described later. Additionally, the fourth stopper may be maintained at a certain distance from the base 210 and/or the circuit board 250 during the initial state and normal operation. Through this configuration, the housing 140 is spaced apart from the base 210 at the bottom and the cover member 300 at the top, so that the height in the optical axis direction can be maintained without vertical interference. Accordingly, the housing 140 may perform a shifting operation in the second and third directions.

The first lens driving unit according to the embodiment uses the first sensor 170 to sense the position of the bobbin 110 in the first direction or a direction parallel to the first direction, which is the optical axis direction of the bobbin 110. Movement can be controlled precisely. This may be possible by returning the position sensed by the first sensor 170 to the outside through the circuit board 250.

Meanwhile, according to one embodiment, a magnet 130 (hereinafter referred to as 'AF In addition to the 'magnet'), a magnet (hereinafter 'sensing magnet') (not shown) facing the first sensor 170 may be placed separately. At this time, the interaction between the AF magnet 130 and the first coil 120 may be interrupted by the sensing magnet. This is because magnetic fields may be generated by the sensing magnet. Therefore, the first sensor ( 170) may be arranged to face a separate sensing magnet. In this case, the first sensor 170 may be placed, coupled, or mounted on the bobbin 110, and the sensing magnet may be placed, coupled, or mounted on the housing 140. Alternatively, the first sensor 170 may be placed, coupled, or mounted on the housing 140, and the sensing magnet may be placed, coupled, or mounted on the bobbin 110.

According to another embodiment, instead of separately arranging the sensing magnet, the AF magnet may be used as a sensing magnet to move the bobbin 110 in the first direction, which is the optical axis direction, or in a direction parallel to the first direction. . For example, so that the AF magnet 130 can also serve as a sensing magnet, the first sensor 170 is not placed in the housing 140 but is placed, coupled, or mounted on the bobbin 110 to connect the first sensor 170 to the bobbin 110. You can make it move with (110). Therefore, when the AF magnet and the sensing magnet coexist, problems caused by the interaction of the two magnets can be fundamentally resolved. For example, the need for magnetic field compensation metal (not shown) to minimize interaction between the AF magnet and the sensing magnet can be eliminated.

Meanwhile, the first lens driving unit may further include various devices to improve the auto focusing function of the first lens driving unit in addition to the first sensor 170. In this case, the method or process of receiving power through the arrangement position of the device or the circuit board 250 and supplying a feedback signal to the circuit board 250 may be the same as that of the first sensor 170.

Meanwhile, referring again to FIG. 2, the second lens driving unit is a lens driving unit for image stabilization as described above, and includes a first lens driving unit, a base 210, a plurality of support members 220, and a second coil 230. ), a second sensor 240, and a circuit board 250.

The first lens driving unit may have the same configuration as described above, but may be replaced with an optical system that implements another type of auto-focusing function in addition to the above-described configuration. That is, instead of using a voice coil motor type auto focusing actuator, it may be composed of an optical module that uses a single lens moving actuator or a variable refractive index type actuator. That is, the first lens driving unit can use any optical actuator that can perform an autofocusing function. However, the magnet 130 needs to be installed at a location corresponding to the second coil 230, which will be described later.

13 shows the upper elastic member 150, the lower elastic member 160, the support member 220, the current conducting member 154, the circuit board 250, the bobbin 110, and the first coil 120 according to the embodiment. Shows the front view of the combination.

The electricity-conducting member 154 may be formed to have a shorter length than the support member 220. That is, the first length L1 corresponding to the length of the current conducting member 154 measured from the lower surface of the upper elastic member 150 to the upper surface of the lower elastic member 160 is from the lower surface of the upper elastic member 150. It may be shorter than the second length corresponding to the length of the support member 220 measured up to the top surface of the circuit board 250.

This means that the lower end of the conductive member 154 is fixedly coupled to the lower elastic member 160, the lower end of the support member 220 is inserted or coupled to the circuit board, and a constant distance is provided between the lower elastic member 160 and the circuit board. This is because there is a separation distance.

Meanwhile, the first length L1 can be appropriately selected considering the ease of assembly of the lens driving device, the size of the bobbin 110, etc. Accordingly, the first length L1 may be 0.1 mm to 1 mm, and more preferably 0.3 mm to 0.5 mm.

In an embodiment, the upper elastic member 150 and the lower elastic member 160 are mechanically and electrically connected to each other by the current conducting member 154, so that the lower elastic member 160 has a structure in which current is applied from the circuit board 250. has

When the lower elastic member 160 is directly connected to the support member 220, the lower elastic member 160 is adjacent to the bottom of the support member 220, which is a portion fixed to the circuit board 250 or the second coil 230. is positioned, and when the bobbin 110 is driven in the second and third directions, the support member 220, in which both the upper elastic member 150 and the lower elastic member 160 are combined, moves in the second and third directions. In order to bend, a strong driving force is required.

However, in the embodiment, the support member 220 is coupled only to the upper elastic member 150, and the coupling portion is also from the bottom of the support member 220, which is the portion fixed to the circuit board 250 or the second coil 230. Since it is located at a relatively long distance, in order to bend the support member 220 in the second and third directions, a significantly smaller driving force is sufficient compared to the case where the lower elastic member 160 is directly connected to the support member 220. do.

Therefore, in the embodiment, the above-described structure has the effect of reducing the driving force required when the bobbin 110 is driven in the second and third directions.

Therefore, in the embodiment, the lens driving device has the effect of performing camera shake correction with a small driving force. Additionally, since excessive driving force is not applied to the support member 220, the durability of the lens driving device including the support member 220 can be improved.

Figure 14 shows an exploded perspective view of the base 210, the second coil 230, and the circuit board 250.

First, the base 210 of the second lens driving unit may have a substantially rectangular planar shape, as illustrated in FIGS. 2 and 14 . A step 211 may be formed on the base 210 as illustrated in FIG. 14 so that adhesive can be applied when fixing the cover member 300 by adhesive. At this time, the step 211 may guide the cover member 300 coupled to the upper side, and the end of the cover member 300 may be coupled so as to make surface contact. The ends of the step 211 and the cover member 300 may be adhesively fixed and sealed using an adhesive or the like.

The base 210 may be arranged to be spaced apart from the first lens driving unit at a certain distance. A support portion 255 of a corresponding size may be formed on the surface of the base 210 facing the portion of the circuit board 250 where the terminals 251 are formed. The support portion 255 is formed from the outer surface of the base 210 with a constant cross-section without steps 211, so that the terminal surface 253 on which the terminal 251 is formed can be supported.

The edge of the base 210 has a second groove 212. When the edge of the cover member 300 has a protruding shape, the protrusion of the cover member 300 may be fastened to the base 210 in the second groove 212.

Additionally, second seating grooves 215-1 and 215-2 in which the second sensor 240 can be placed may be provided on the upper surface of the base 210. According to the embodiment, a total of two second seating grooves 215-1 and 215-2 are provided, and the second sensor 240 is disposed in the second seating grooves 215-1 and 215-2, respectively, so that the housing The degree to which 140 moves in the second and third directions can be detected. For this purpose, two second seating grooves (215-1, 215-2) are formed so that the angle formed by the virtual lines connecting the second seating grooves (215-1, 215-2) and the center of the base 210 is 90°. ) can be placed.

A tapered inclined surface (not shown) may be formed on at least one side of the second seating grooves 215-1 and 215-2. It can be configured so that epoxy injection for assembling the second sensor 240 can be performed more smoothly. In addition, separate epoxy, etc. may not be injected into the second seating grooves 215-1 and 215-2, but epoxy, etc. may be injected to fix the second sensor 240. The second seating grooves 215-1 and 215-2 may be located at or near the center of the second coil 230. Alternatively, the center of the second coil 230 and the center of the second sensor 240 may be aligned. According to the embodiment, the second seating grooves 215-1 and 215-2 may be installed on the sides of the base 210.

A groove is formed at a position corresponding to the step 211 of the cover member 300, and adhesive, etc. can be injected through this groove. At this time, the viscosity of the injected adhesive is set to be low, so that the adhesive injected through the groove may penetrate into the surface contact positions of the end portions of the step 211 and the cover member 300. In this way, the adhesive member applied to the groove fills the gap between the opposing surfaces of the cover member 300 and the base 210 through the groove, so that the cover member 300 is coupled to the base 210. It can be configured to enable sealing.

Additionally, a seating portion (not shown) where a filter is installed may be formed on the lower surface of the base 210. These filters may be infrared blocking filters. However, this is not limited, and a filter may be placed in a separate sensor holder below the base 210. Additionally, as will be described later, a sensor board on which an image sensor is mounted may be combined with the lower surface of the base 210 to form a camera module.

Meanwhile, the plurality of support members 220 may be respectively disposed on the second side 142 of the housing 140. For example, as described above, when the housing 140 has a polygonal planar shape, the number of second sides 142 of the housing 140 may be plural. If the inner lower side of the housing 140 has an octagonal bottom shape, the plurality of support members 220 may be disposed on the second side 142 among the eight sides. For example, two support members 220 may be disposed on each of the four second side portions 142, providing a total of eight support members 220.

Alternatively, in the housing 140, only one support member 220 is disposed on each of two second sides 142 among the four second sides 142, and two support members 220 are disposed on each of the remaining two second sides 142. The support members 220 may be disposed, so that a total of six support members 220 may be provided.

As described above, the support member 220 forms a path for transmitting the power required by the first sensor 170 and the first coil 120, and transmits the feedback signal output from the first sensor 170 to the circuit board ( 250) can be formed.

In addition, the support members 220 serve to restore the housing 140 to its original position after it moves in the second and third directions in the first lens driving unit, so the same number of support members 220 in the diagonal direction ) is placed, the modulus of elasticity (K) can be balanced. That is, when the housing 140 moves in the second and/or third directions, which are planes perpendicular to the optical axis, the support member 220 moves slightly in the direction in which the housing 140 moves or in the longitudinal direction of the support member 220. Can be elastically deformed. Here, the longitudinal direction may be a direction connecting the upper and lower ends of each wire of the support member 220. Then, the housing 140 can move in the second and third directions, which are planes substantially perpendicular to the optical axis, with almost no change in position in the first direction, which is parallel to the optical axis, thereby improving the accuracy of hand shake correction. This takes advantage of the characteristic that the support member 220 can be extended in the longitudinal direction.

For example, as illustrated in FIG. 12, the four first to fourth support members 220-1, 220-2, 220-3, and 220-4 are located on four of the eight sides of the housing 140. Two are individually arranged on the second side 142, so that the housing 140 can be supported at a certain distance from the base 210.

The first to fourth support members 220-1, 220-2, 220-3, and 220-4 according to the embodiment are each disposed on the second side 142 of the housing 140 and are installed symmetrically to each other. It can be. However, this is not limited. That is, the shape and number of the plurality of support members 220 may be determined to be symmetrical to each other in directions perpendicular to the first direction, for example, in the second and third directions. Considering the elastic modulus described above, the number of support members 220 may be eight as described above.

In the above-described example, the support member 220 was implemented in the form of a suspension wire without a certain pattern, but the embodiment is not limited to this. That is, according to another embodiment, the support member 200 may be formed in a plate shape with an elastic deformation portion (not shown).

Meanwhile, referring to FIG. 14 , the second coil 230 may include a fifth through hole 230a penetrating an edge portion of the circuit member 231. The support member 220 may be connected to the circuit board 250 through the fifth through hole 230a.

At this time, the support member 220 may be inserted into the fifth through hole 230a and fixedly coupled to the second coil 230 by soldering, conductive adhesive, etc. Meanwhile, as described above, the support member 220 may be fixedly coupled to the circuit board 250.

The second coil 230 may be arranged to face the magnet 130 fixed to the housing 140. As an example, the second coil 230 may be disposed outside the magnet 130. Alternatively, the second coil 230 may be installed on the lower side of the magnet 130 at a certain distance apart.

According to the embodiment, as illustrated in FIG. 14, a total of four second coils 230 may be installed on the four sides of the circuit board 250, but this is not limited, and one for the second direction and one for the second direction. It is possible to install only two, such as one for three directions, or four or more can be installed. In an embodiment, a circuit pattern may be formed in the shape of a second coil 230 on the circuit board 250, and additionally, a separate second coil 230 may be disposed on the circuit board 250, but the present invention is not limited to this. Instead of forming a circuit pattern in the shape of the second coil 230 on the circuit board 250, only a separate second coil 230 may be disposed on the circuit board 250. Alternatively, it is also possible to form the second coil 230 by winding a wire in a donut shape, or by forming the second coil 230 in the form of an FP coil and electrically connecting it to the circuit board 250.

The circuit member 231 including the second coil 230 may be installed on the upper surface of the circuit board 250 disposed on the upper side of the base 210. However, this is not limited, and the second coil 230 may be placed in close contact with the base 210, may be placed at a certain distance apart, or may be formed on a separate board and connected to the circuit board 250 by lamination. there is.

As described above, hand shake correction may be performed by moving the housing 140 in the second and/or third directions due to the interaction between the magnet 130 and the second coil 230 arranged to face each other. To this end, the above-described first to fourth support members 220 may support the housing 140 movably in the second and third directions perpendicular to the first direction with respect to the base 210.

Meanwhile, the second sensor 240 may detect the displacement of the first lens driving unit with respect to the base 210 in the second and third directions perpendicular to the optical axis. To this end, the second sensor 240 is disposed at the center of the second coil 230 with the circuit board 250 in between and can detect the movement of the housing 140. That is, the second sensor 240 is not directly connected to the second coil 230, and the second coil 230 is located on the upper surface and the second sensor 240 is located on the lower surface based on the circuit board 250. can be installed. According to an embodiment, the second sensor 240, the second coil 230, and the magnet 130 may be arranged on the same axis.

The second sensor 240 may be a Hall sensor, and any sensor that can detect changes in magnetic force can be used. As shown in FIG. 14, a total of two second sensors 240 may be installed on the sides of the base 210 disposed on the lower side of the circuit board 250, and the mounted second sensors 240 may be It may be inserted into the second seating grooves 215-1 and 215-2 formed in the base 210.

The circuit board 250 may include sixth through holes 250a1 and 250a2 through which the support member 220 can pass. The support member 220 may be electrically connected to a corresponding circuit pattern that may be placed on the bottom of the circuit board 250 through the sixth apertures 250a1 and 250a2 of the circuit board 250, such as through soldering.

The circuit board 250 may further include a seventh through hole 250b. The second upper support protrusion 217 and the seventh through hole 250b of the base 210 may be coupled and fixed by heat fusion as shown in FIG. 14, or may be fixed with an adhesive member such as epoxy.

The circuit board 250 may further include a plurality of terminals 251. A bent terminal surface 253 may be formed on the circuit board 250. According to an embodiment, at least one terminal 251 may be installed on one bent terminal surface 253 of the circuit board 250.

According to the embodiment, external power is applied through a plurality of terminals 251 installed on the terminal surface 253 to supply power to the first and second coils 120 and 230 and the first and second sensors 170 and 240. may be supplied, and the feedback signal output from the first sensor 170 may be output to the outside. The number of terminals formed on the terminal surface 253 where the terminal 251 is installed may increase or decrease depending on the types of components that require control.

According to the embodiment, the circuit board 250 may be provided as an FPCB, but this is not limited, and the terminal configuration of the circuit board 250 is directly formed on the surface of the base 210 using a surface electrode method, etc. It is also possible.

As described above, the circuit board 250 supplies the necessary power (or current) from the first coil 120 and the first sensor 170, and receives a feedback signal from the first sensor 170 to operate the bobbin. The displacement of (110) can be adjusted.

Meanwhile, the lens driving device according to the above-described embodiment can be used in various fields, such as camera modules. For example, camera modules can be applied to mobile devices such as mobile phones.

The camera module according to the embodiment may include a lens barrel coupled to the bobbin 110, an image sensor (not shown), a circuit board 250, and an optical system.

The lens barrel is as described above, and the circuit board 250 may form the bottom surface of the camera module from the portion where the image sensor is mounted.

Additionally, the optical system may include at least one lens that transmits an image to the image sensor. At this time, an actuator module capable of performing an auto-focusing function and an image stabilization function may be installed in the optical system. The actuator module that performs the auto-focusing function can be configured in various ways, and voice coil unit motors are commonly used. The lens driving device according to the above-described embodiment can function as an actuator module that performs both an auto-focusing function and an image stabilization function.

Additionally, the camera module may further include an infrared blocking filter (not shown). The infrared cut-off filter serves to block light in the infrared range from entering the image sensor. In this case, in the base 210 illustrated in FIG. 2, an infrared cut-off filter may be installed at a position corresponding to the image sensor and may be combined with a holder member (not shown). Additionally, the base 210 may support the lower side of the holder member.

A separate terminal member may be installed on the base 210 to conduct electricity with the circuit board 250, and it is also possible to form the terminal integrally using surface electrodes, etc. Meanwhile, the base 210 may function as a sensor holder that protects the image sensor. In this case, a protrusion may be formed in the downward direction along the side of the base 210. However, this is not an essential configuration, and although not shown, a separate sensor holder may be placed at the bottom of the base 210 to perform its role.

According to the above configuration, the auto focusing operation and the hand shake correction operation of the first and second lens driving units can be implemented by using the magnet 130 in common.

In the case of the lens driving device and the camera module including the same according to the above-described embodiment, the first sensor 170 is arranged, coupled, or mounted on the housing 140 or the bobbin 110, and the magnet 130 for AF is used. It can be shared as a sensor magnet or a sensor magnet can be placed separately. If the AF magnet 130 is used as a sensor magnet or the sensor magnet is arranged so as not to interact with the AF magnet 130, the sensor magnet will not affect the AF magnet 130. Tilt is not caused in the bobbin 110, the accuracy of the feedback signal is improved, the number of parts is not increased, and the weight of the housing 140 is reduced, thereby improving responsiveness. Of course, the magnet for auto focusing and the magnet for image stabilization may be configured separately.

Although only a few examples have been described as described above in relation to the embodiments, various other forms of implementation are possible. The technical contents of the above-described embodiments can be combined in various forms unless they are incompatible technologies, and through this, can be implemented as a new embodiment.

110: Bobbin
120: first coil
130: Magnet
140: housing
150: upper elastic member
154: Absence of electricity
155: first protruding frame
160: lower elastic member
165: second protruding frame
170: first sensor
180: sensor substrate
210: base
220: support member
230: second coil
240: second sensor
250: circuit board
300: Cover member

Claims (20)

A coil and a first magnet arranged to face each other;
a housing supporting the first magnet;
A bobbin with the coil wound on its outer circumferential surface;
an upper elastic member disposed on the bobbin;
At least one support member connected to the upper elastic member;
a sensor detecting displacement of the bobbin in a first direction;
A damping member disposed on the housing; and
Includes a second magnet disposed on the bobbin to face the sensor,
The bobbin includes a protrusion protruding from the outer peripheral surface toward the housing in a circumferential direction intersecting the first direction,
The housing includes a groove formed at a position corresponding to the protrusion,
The sensor is disposed on one side of the housing where the groove is formed,
The at least one support member extends through a hole formed in the housing,
The housing includes a groove disposed below the aperture,
A lens driving device wherein at least a portion of the damping member is disposed in the groove. According to claim 1,
a lower elastic member disposed below the bobbin; and
A lens driving device including a circuit board electrically connected to the sensor and the coil, respectively. According to clause 2,
The lower elastic member includes first and second lower elastic members spaced apart from each other,
A lens driving device wherein the coil is electrically connected to the circuit board through the first and second lower elastic members. According to clause 3,
The housing includes first and second sides facing each other in a second direction crossing the first direction;
third and fourth sides facing each other in a third direction intersecting the first and second directions, respectively;
a fifth side disposed between the first side and the third side;
a sixth side disposed between the second side and the fourth side;
a seventh side disposed between the third side and the second side; and
an eighth side disposed between the fourth side and the first side,
The lens driving device wherein the through hole is formed in at least one of the fifth to eighth sides. According to clause 4,
The first magnet is disposed on the first to fourth sides, respectively,
The sensor is a lens driving device disposed on one of the fifth to eighth sides. According to clause 4,
The upper elastic member includes a plurality of upper elastic members spaced apart from each other,
The lens driving device wherein the plurality of upper elastic members are respectively disposed on the first to fourth sides. According to clause 4,
Each of the fifth to eighth sides includes the groove formed on the side,
The at least one support member includes first to fourth support members disposed on the fifth to eighth sides, respectively. The lens driving device of claim 4, wherein the fifth to eighth sides are disposed at corners of the housing. The method of claim 7, wherein the circuit board is
A lens driving device electrically connected to at least one of the coil, the first and second lower elastic members, and the first to fourth support members. The method of claim 3, wherein each of the first and second lower elastic members
At least one inner frame coupled to the bobbin;
At least one outer frame coupled to the housing; and
A lens driving device comprising a frame connector connecting the at least one inner frame and the at least one outer frame. The lens driving device of claim 1, wherein the sensor and the first magnet are disposed to face each other so that an imaginary central horizontal line passing through the center of the sensor and perpendicular to the optical axis coincides with the upper tip of the first magnet. The lens driving device of claim 6, comprising a sensor substrate on which the sensor is disposed. The method of claim 12, wherein the sensor substrate is
a body on which the sensor is placed;
a plurality of elastic member contact portions that protrude from the body and each contact the plurality of upper elastic members; and
A lens driving device including a circuit pattern disposed on the body and electrically connecting the sensor and the plurality of elastic member contact parts. According to claim 1,
a base spaced apart from the bottom of the housing; and
A lens driving device including a cover member spaced apart above the housing. According to clause 7,
The first to third directions are orthogonal to each other. According to clause 3,
When viewed from the top, the first and second lower elastic members are symmetrically disposed in a direction perpendicular to the first direction with respect to the center of the bobbin. The lens driving device of claim 1, wherein the first magnet and the second magnet are integrated. delete A lens driving device according to any one of claims 1 to 17; and
A camera module containing an image sensor. A mobile device including the camera module according to claim 19.

Images