Lens driving device, camera module, and optical apparatus

Abstract

To provide a lens driving apparatus, a camera module, and an optical device.SOLUTION: The present embodiment relates to a lens driving apparatus, a camera module and an optical device, which comprise: a first housing; a second housing; a bobbin; an aperture; a first coil, a second coil, a third coil and a fourth coil; and a first magnet, a second magnet, a third magnet and a fourth magnet. The first coil, the second coil, the third coil and the fourth coil are spaced. The first coil and the third coil are disposed opposite each other with the first magnet and the third magnet interposed therebetween. The second coil and the fourth coil are disposed opposite each other with the second magnet and the fourth magnet interposed therebetween.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This embodiment relates to a lens driving device, a camera module, and an optical apparatus.

Background Art

[0002] The following description provides only background information for this embodiment and does not describe the prior art.

[0003] With the widespread popularization of various portable terminals and the commercialization of wireless Internet services, consumer requirements related to portable terminals have diversified, and various additional devices have been attached to portable terminals.

[0004] Among them, a typical one is a camera module that captures a subject in a photo or video. In recent years, there have emerged camera modules equipped with an autofocus function, which is a function of automatically adjusting the focus according to the distance of the subject, and an anti-shake function that moves or tilts the lens module in a direction perpendicular to the optical axis so as to cancel out vibrations (movements) generated in the image sensor by an external force.

[0005] On the other hand, a diaphragm is a device that adjusts the amount of light transmitted through the lens module by adjusting the size of the hole.

[0006] In a normal camera module, there is a problem that the autofocus function, the anti-shake function, and the driving of the diaphragm are performed by separate driving members, resulting in a complicated structure.

Summary of the Invention

Problems to be Solved by the Invention

[0007] In this embodiment, it is intended to provide a lens driving device, a camera module, and an optical apparatus having a compact structure, capable of driving the focus function, the anti-shake function, and the diaphragm by a single driving member.

Means for Solving the Problems

[0008] The lens driving device of this embodiment includes a first housing, a second housing disposed inside the first housing, a bobbin disposed inside the second housing, a diaphragm disposed on or in the bobbin, a first coil, a second coil, a third coil, and a fourth coil disposed in the first housing, a first magnet disposed in the second housing and arranged to correspond to the first coil, a second magnet disposed in the bobbin and arranged to correspond to the second coil, a third magnet disposed in the bobbin and arranged to correspond to the third coil, and a fourth magnet disposed in the diaphragm and arranged to correspond to the fourth coil. The first coil, the second coil, the third coil, and the fourth coil are arranged at intervals from each other. The first coil and the third coil can be arranged to face each other via the first magnet and the third magnet, and the second coil and the fourth coil can be arranged to face each other via the second magnet and the fourth magnet.

[0009] The first housing includes a first corner, a second corner, a third corner, and a fourth corner arranged at intervals from each other, a first connecting portion connecting the first corner and the second corner, a second connecting portion connecting the second corner and the third corner, a third connecting portion connecting the third corner and the fourth corner, and a fourth connecting portion connecting the fourth corner and the first corner. The first coil can be disposed on the first connecting portion, the second coil can be disposed on the second connecting portion, the third coil can be disposed on the third connecting portion, and the fourth coil can be disposed on the fourth connecting portion.

[0010] It further includes a substrate on the inner surface of which the first coil, the second coil, the third coil, and the fourth coil are disposed, and the substrate can be disposed on the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion.

[0011] The substrate may include a first substrate disposed at the first connection portion with the first coil disposed on the inner surface thereof, a second substrate disposed at the second connection portion with the second coil disposed on the inner surface thereof, a third substrate disposed at the third connection portion with the third coil disposed on the inner surface thereof, and a fourth substrate disposed at the fourth connection portion with the fourth coil disposed on the inner surface thereof.

[0012] One or more magnetic sensors may be further included, which are disposed on the inner surface of the substrate, spaced apart from the first coil, the second coil, the third coil, and the fourth coil, and sense the magnetic force of at least one of the first magnet, the second magnet, the third magnet, and the fourth magnet.

[0013] The second housing moves in the optical axis direction due to the electromagnetic interaction between the first magnet and the first coil. The bobbin moves in a first direction perpendicular to the optical axis or tilts in a first direction perpendicular to the optical axis due to the electromagnetic interaction between the second magnet and the second coil. The bobbin moves in a second direction perpendicular to both the optical axis and the first direction or tilts in a second direction perpendicular to both the optical axis and the first direction due to the electromagnetic interaction between the third magnet and the third coil. The aperture includes a stator including a first guide and a second guide, a mover disposed on the stator and on which the fourth magnet is disposed, a connecting rod rotatably connected to the mover at one side, a rotor rotatably connected to the other side of the connecting rod and rotatably connected to the stator at the center, a first blade disposed on one side of the rotor, and a second blade disposed on the other side of the rotor. One side of the first blade is rotatably connected to one side of the rotor and includes a first connecting rod that moves along the first guide, and a first blocking plate disposed on the other side of the first connecting rod and having a first groove formed therein. One side of the second blade is rotatably connected to the other side of the rotor and includes a second connecting rod that moves along the second guide, and a second blocking plate disposed on the other side of the second connecting rod and having a second groove formed therein. At least a part of the first groove and the second groove overlap in the optical axis direction, and the area of the hole formed by the first groove and the second groove can be adjusted by the electromagnetic interaction between the fourth magnet and the fourth coil.

[0014] One or more first ball bearings disposed between the first housing and the second housing, a moving member disposed between the second housing and the bobbin, one or more second ball bearings disposed between the moving member and the bobbin, and one or more third ball bearings disposed between the second housing and the moving member may be further included.

[0015] The cover in which the first housing, the second housing, the bobbin, the aperture, the first coil, the second coil, the third coil, the fourth coil, the first magnet, the second magnet, the third magnet, and the fourth magnet are disposed inside can be further included.

[0016] The camera module of this embodiment includes a lens driving device, a lens module disposed in the lens driving device and including a plurality of lenses, a main board disposed under the lens driving device, and an image sensor mounted on the main board and disposed on the optical axis of the lens module. The lens driving device includes a first housing, a second housing disposed inside the first housing, a bobbin disposed inside the second housing, an aperture disposed on or in the bobbin, first, second, third, and fourth coils disposed in the first housing, a first magnet disposed in the second housing and disposed to correspond to the first coil, a second magnet disposed in the bobbin and disposed to correspond to the second coil, a third magnet disposed in the bobbin and disposed to correspond to the third coil, and a fourth magnet disposed in the aperture and disposed to correspond to the fourth coil. The first, second, third, and fourth coils are disposed spaced apart from each other. The first coil and the third coil can be disposed facing each other via the first magnet and the third magnet. The second coil and the fourth coil can be disposed facing each other via the second magnet and the fourth magnet.

[0017] The optical device of this embodiment includes a frame, a display disposed on one surface of the frame, and a camera module disposed inside the frame and electrically connected to the display. The camera module includes a lens module disposed in the lens driving device and including a plurality of lenses, a main board disposed under the lens driving device, and an image sensor mounted on the main board and disposed on the optical axis of the lens module. The lens driving device includes a first housing, a second housing disposed inside the first housing, a bobbin disposed inside the second housing, a diaphragm disposed on or in the bobbin, a first coil, a second coil, a third coil, and a fourth coil disposed in the first housing, a first magnet disposed in the second housing and arranged to correspond to the first coil, a second magnet disposed in the bobbin and arranged to correspond to the second coil, a third magnet disposed in the bobbin and arranged to correspond to the third coil, and a fourth magnet disposed in the diaphragm and arranged to correspond to the fourth coil. The first coil, the second coil, the third coil, and the fourth coil are disposed separately from each other. The first coil and the third coil are disposed opposite to each other via the first magnet and the third magnet. The second coil and the fourth coil can be disposed opposite to each other via the second magnet and the fourth magnet.

Advantages of the Invention

[0018] The lens driving device of this embodiment can perform the focusing function, the anti-shake correction function, and the driving of the diaphragm together by the electromagnetic interaction between the coil disposed in the first housing and the magnets disposed in the second housing, the bobbin, and the diaphragm respectively. As a result, it can have a compact structure. Furthermore, this embodiment provides a camera module including the lens driving device and an optical device including the camera module.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0020] Hereinafter, some embodiments of the present invention will be described with reference to exemplary drawings. When assigning reference numerals to the components of each drawing, the same components are denoted by the same reference numerals as much as possible even if they are shown on other drawings. Further, in describing the embodiments of the present invention, when it is determined that a detailed description of a related known configuration or function hinders the understanding of the embodiments of the present invention, the detailed description thereof is omitted.

[0021] Also, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. can be used. Such terms are for distinguishing the components from other components, and the essence, order, or sequence of the corresponding components is not limited by such terms. When a component is described as being "connected", "coupled", or "joined" to another component, that component can be directly connected, coupled, or joined to that other component, but it should be understood that another component can be "connected", "coupled", or "joined" between that component and that other component.

[0022] The "optical axis" used hereinafter can be the optical axis of the lens module in a state coupled to the lens driving device. The "optical axis direction" can be parallel to the z-axis. The "first direction" can be perpendicular to the optical axis. The "first direction" can be parallel to the x-axis. The "second direction" can be a direction perpendicular to both the optical axis direction and the first direction. The "second direction" can be parallel to the y-axis.

[0023] However, it is not limited that the "optical axis", the "first direction", and the "second direction" are arranged perpendicular to each other. For example, the "optical axis" and the "first direction" can be arranged to be inclined at an angle other than 90°, and the "second direction" can be arranged to be inclined at an angle other than 90° together with the "optical axis" and the "first direction".

[0024] The "auto-focus function" used hereinafter is defined as a function of adjusting the focus on the subject by moving the lens module in the optical axis direction to adjust the distance from the image sensor according to the distance of the subject so that the image sensor can obtain a clear image of the subject. On the other hand, the "auto-focus function" is used interchangeably with the "AF (Auto Focus) function".

[0025] The "shake correction function" used hereinafter is defined as a function of moving or tilting the lens module in a direction perpendicular to the optical axis direction (the first direction or the first direction) so as to cancel the vibration (movement) generated in the image sensor by an external force. On the other hand, the "shake correction function" is used interchangeably with the "OIS (Optical Image Stabilization) function".

[0026] Hereinafter, the configuration of the "optical device" of this embodiment will be described. The optical device according to this embodiment includes, but is not limited to, a mobile phone, a smart phone, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and a navigation device, etc., and can be any device for shooting video or photos.

[0027] The "optical device" of this embodiment can include a frame which is an exterior member, a display panel arranged on one surface of the frame for displaying information, and a camera module arranged inside the frame. The camera module can shoot video or photos and be electrically connected to the display panel. The video shot by the camera module can be played on the display panel.

[0028] Hereinafter, the configuration of the "camera module" of this embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view conceptually showing the camera module of this embodiment, FIG. 2 is an exploded perspective view conceptually showing the camera module of this embodiment, FIG. 3(a) is a perspective view conceptually showing the first housing of this embodiment, the upper part of FIG. 3(b) is a view of the developed view of the substrate of this embodiment seen from the inside, the lower part of FIG. 3(b) is a view of the developed view of the substrate of this embodiment seen from the outside, FIG. 4 is a plan view conceptually showing the first housing, the second housing, the bobbin, the aperture, the coil, and the magnet of this embodiment, and FIG. 5 is a plan view conceptually showing the aperture of this embodiment.

[0029] The camera module 1000 can include a cover 100, a first housing 200, a coil 210, a substrate 220, a magnetic sensor 230, a yoke 240, a second housing 300, a first ball bearing 310, a bobbin 400, a lens module 410, a moving member 500, a second ball bearing 510, a third ball bearing 520, a magnet 600, a diaphragm 700, a base 800, a main substrate 900, an image sensor 910, an infrared cut filter (not shown), and a control unit (not shown).

[0030] The cover 100, the first housing 200, the coil 210, the substrate 220, the magnetic sensor 230, the yoke 240, the second housing 300, the first ball bearing 310, the bobbin 400, the lens module 410, the moving member 500, the second ball bearing 510, the third ball bearing 520, the magnet 600, the diaphragm 700, and the base 800 can be components of the "lens driving device".

[0031] The cover 100 can be an exterior member of the "camera module 1000" and the "lens driving device".

[0032] Inside the cover 100, the first housing 200, the coil 210, the substrate 220, the magnetic sensor 230, the yoke 240, the second housing 300, the first ball bearing 310, the bobbin 400, the lens module 410, the moving member 500, the second ball bearing 510, the third ball bearing 520, the magnet 600, the diaphragm 700, and the base 800 can be arranged. Under the cover 100, the main substrate 900 and the image sensor 910 can be arranged.

[0033] The cover 100 can include a metal material. The cover 100 can block the inflow of electromagnetic waves from the outside to the inside and the discharge of electromagnetic waves from the inside to the outside. Therefore, the cover 100 can be referred to as a "shield can". However, the material of the cover 100 is not limited thereto. For example, the cover 100 can include a plastic material.

[0034] The cover 100 can be in the form of a square plate and include an upper plate with a hole formed at the center and aligned with the optical axis, and four side plates extending downward from each side of the upper plate. The cover 100 can form an internal space with a hole aligned with the optical axis on the upper surface and an open lower surface by the upper plate of the cover 100 and the side plates of the cover 100. External light reflected by the subject through the hole in the upper plate of the cover 100 can be transmitted.

[0035] The cover 100 can be supported by the main substrate 900. The lower surface of the side plate of the cover 100 can be coupled to the upper surface of the main substrate 900. An adhesive can be applied to the coupling portion between the cover 100 and the main substrate 900. However, in a modified example (not shown), the cover 100 can be supported by the base 800. In this case, the coupling relationship between the cover 100 and the base 800 can be analogously applied to the coupling relationship between the cover 100 and the main substrate 900 in this embodiment.

[0036] The first housing 200 can be disposed inside the cover 100. Inside the first housing 200, a second housing 300, a first ball bearing 310, a bobbin 400, a lens module 410, a moving member 500, a second ball bearing 510, a third ball bearing 520, a magnet 600, and a diaphragm 700 can be disposed. A coil 210, a substrate 220, a magnetic sensor 230, and a yoke 240 can be disposed on the first housing 200. Below the first housing 200, a base 800 and a main substrate 900 can be disposed.

[0037] The first housing 200 can include a plastic material. The first housing 200 can be a plastic injection product. However, the material of the first housing 200 is not limited thereto.

[0038] The first housing 200 can include a first corner (C1), a second corner (C2), a third corner (C3), and a fourth corner (C4) that are arranged at intervals from each other, a first connecting portion 201 that connects the first corner (C1) and the second corner (C2), a second connecting portion 202 that connects the second corner (C2) and the third corner (C3), a third connecting portion 203 that connects the third corner (C3) and the fourth corner (C4), and a fourth connecting portion 204 that connects the fourth corner (C4) and the first corner (C1).

[0039] The first corner (C1) and the third corner (C3) can be arranged symmetrically with respect to the optical axis. The second corner (C2) and the fourth corner (C4) can be arranged symmetrically with respect to the optical axis at a distance from the first corner (C1) and the third corner (C3). The first corner (C1) can be located between the first connecting portion 201 and the second connecting portion 202. The second corner (C2) can be located between the second connecting portion 202 and the third connecting portion 203. The third corner (C3) can be located between the third connecting portion 203 and the fourth connecting portion 204. The fourth corner (C4) can be located between the fourth connecting portion 204 and the first connecting portion 201.

[0040] The first connecting portion 201 and the third connecting portion 203 can be arranged symmetrically with respect to the optical axis. The first connecting portion 201 and the third connecting portion 203 can be arranged so as to correspond (oppose, overlap) in the "second direction".

[0041] The second connecting portion 202 and the fourth connecting portion 204 can be arranged between the first connecting portion 201 and the third connecting portion 203 and symmetrically with respect to the optical axis. The second connecting portion 202 and the fourth connecting portion 204 can be arranged so as to correspond (oppose, overlap) in the "first direction".

[0042] The first connecting portion 201 and the third connecting portion 203 can be arranged to be parallel to each other. The second connecting portion 202 and the fourth connecting portion 204 can be arranged to be parallel to each other. The first connecting portion 201 and the third connecting portion 203 can be arranged to be perpendicular to the second connecting portion 202 and the fourth connecting portion 204.

[0043] The first coil 211, the first substrate 221, the first magnetic sensor 231, and the first yoke 241 can be arranged on the first connecting portion 201. The second coil 212, the second substrate 222, the second magnetic sensor 232, and the first yoke 242 can be arranged on the second connecting portion 202. The third coil 213, the third substrate 223, the third magnetic sensor 233, and the third yoke 243 can be arranged on the third connecting portion 203. The fourth coil 214, the fourth substrate 224, the fourth magnetic sensor 234, and the fourth yoke 244 can be arranged on the fourth connecting portion 204.

[0044] The connecting portion of the housing 200 can be a support member that functions to support the coil 210, the substrate 220, the magnetic sensor 230, and the yoke 240.

[0045] There can be a plurality of coils 210. The coil 210 can be arranged in the first housing 200. The coil 210 can be arranged on the substrate 220. The coil 210 can be electrically connected to the substrate 220. The plurality of coils 210 can be positioned so as to respectively correspond (oppose, overlap) to the plurality of magnets 600 in the "first direction" and the "second direction". When power is applied to the coil 210, the coil 210 can interact electromagnetically with the magnet 600. Thereby, the focusing function, the shake correction function, and the driving of the aperture 700 can be performed.

[0046] The plurality of coils 210 can include the first coil 211, the second coil 212, the third coil 213, and the fourth coil 214.

[0047] The first coil 211 can be a coil block around which a conductive wire is wound or a pattern coil formed on a substrate. The first coil 211 can be disposed at the first connection portion 201 of the first housing 200. The first coil 211 can be disposed on the first substrate 221. The first coil 211 can be arranged to correspond (oppose, overlap) with the first magnet 610 in the "second direction". The first coil 211 can interact electromagnetically with the first magnet 610.

[0048] The second coil 212 can be a coil block around which a conductive wire is wound or a pattern coil formed on a substrate. The second coil 212 can be disposed at the second connection portion 202 of the first housing 200. The second coil 212 can be disposed on the second substrate 222. The second coil 212 can be arranged to correspond (oppose, overlap) with the second magnet 620 in the "first direction". The second coil 212 can interact electromagnetically with the second magnet 620.

[0049] The third coil 213 can be a coil block around which a conductive wire is wound or a pattern coil formed on a substrate. The third coil 213 can be disposed at the third connection portion 203 of the first housing 200. The third coil 213 can be disposed on the third substrate 223. The third coil 213 can be arranged to correspond (oppose, overlap) with the third magnet 630 in the "second direction". The third coil 213 can interact electromagnetically with the third magnet 630.

[0050] The fourth coil 214 can be a coil block around which a conductive wire is wound or a pattern coil formed on a substrate. The fourth coil 214 can be disposed at the fourth connection portion 204 of the first housing 200. The fourth coil 214 can be disposed on the fourth substrate 224. The fourth coil 214 can be arranged to correspond (oppose, overlap) with the fourth magnet 640 in the "first direction". The fourth coil 214 can interact electromagnetically with the fourth magnet 640.

[0051] The first coil 211 and the third coil 213 can be arranged to face each other via the first magnet 610 and the third magnet 630. The second coil 212 and the fourth coil 214 can be arranged to face each other via the second magnet 620 and the fourth magnet 640.

[0052] The first coil 211, the second coil 212, the third coil 213, and the fourth coil 214 can be arranged to be similar to being arranged along each side of a quadrilateral. Also, the first coil 211 can face the first magnet 610, the second coil 212 can face the second magnet 620, the third coil 213 can face the third magnet 630, and the fourth coil 214 can face the fourth magnet 640.

[0053] The above-described arrangement is an advantageous arrangement for the plurality of coils 210 to interact electromagnetically with the opposing magnets among the plurality of magnets 600, and at the same time, it is also an arrangement that can minimize electromagnetic interference between adjacent coils 210 and adjacent magnets 600. Therefore, in the camera module 1000 of the present embodiment, an accurate autofocus function, an anti-shake function, and driving of the aperture 700 can be performed.

[0054] The substrate 220 can be disposed in the first housing 200. A coil 210, a magnetic sensor 230, and a yoke 240 can be disposed on the substrate 220. The substrate 220 can be electrically connected to the coil 210 to supply power to the coil 210. The substrate 220 can be electrically connected to the magnetic sensor 230 to transmit the sensing signal of the magnetic sensor 230. The substrate 220 can be electrically connected to the main substrate 900 to receive power and various control signals from the main substrate 900 and transmit the sensing signal of the magnetic sensor 230.

[0055] The substrate 220 can include a first substrate 221, a second substrate 222, a third substrate 223, a fourth substrate 224, a first connection substrate 225, a second connection substrate 226, a third connection substrate 227, and a fourth connection substrate 228.

[0056] The first substrate 221 can be a printed circuit board (PCB). The first substrate 221 can be disposed at the first connection portion 201 of the housing 200. A first coil 211 and a first magnetic sensor 231 can be disposed on the inner surface of the first substrate 221. A first yoke 241 can be disposed on the outer surface of the first substrate 221.

[0057] The second substrate 222 can be a printed circuit board (PCB). The second substrate 222 can be disposed at the second connection portion 202 of the housing 200. A second coil 212 and a second magnetic sensor 232 can be disposed on the inner surface of the second substrate 222. A second yoke 242 can be disposed on the outer surface of the second substrate 222.

[0058] The third substrate 223 can be a printed circuit board (PCB). The third substrate 223 can be disposed at the third connection portion 203 of the housing 200. The third coil 213 and the third magnetic sensor 233 can be disposed on the inner surface of the third substrate 223. The third yoke 243 can be disposed on the outer surface of the third substrate 223.

[0059] The fourth substrate 224 can be a printed circuit board (PCB). The fourth substrate 224 can be disposed at the fourth connection portion 204 of the housing 200. The fourth coil 214 and the fourth magnetic sensor 234 can be disposed on the inner surface of the fourth substrate 224. The fourth yoke 244 can be disposed on the outer surface of the fourth substrate 224.

[0060] The first connection substrate 225 can be a flexible printed circuit board (FPCB). The first connection substrate 225 can electrically connect the first substrate 221 and the second substrate 222. In a modified example (not shown), the first connection substrate 225 can be changed to various conductive lines (for example, wires).

[0061] The second connection substrate 226 can be a flexible printed circuit board (FPCB). The second connection substrate 226 can electrically connect the second substrate 222 and the third substrate 223. In a modified example (not shown), the second connection substrate 226 can be changed to various conductive lines (for example, wires).

[0062] The third connection substrate 227 can be a flexible printed circuit board (FPCB). The third connection substrate 227 can electrically connect the third substrate 223 and the fourth substrate 224. In a modified example (not shown), the third connection substrate 227 can be changed to various conductive lines (for example, wires).

[0063] The fourth connection substrate 228 can be a flexible printed circuit board (FPCB). The fourth connection substrate 228 can electrically connect the fourth substrate 224 and the first substrate 221. In a modified example (not shown), the fourth connection substrate 228 can be changed to various conductive lines (for example, wires).

[0064] There can be one or more magnetic sensors 230. The magnetic sensors 230 can be arranged on the substrate 220. The magnetic sensors 230 can be electrically connected to the substrate 220. The magnetic sensors 230 can be positioned corresponding (opposing, overlapping) to the magnet 600. The magnetic sensors 230 can be positioned so as to correspond (oppose, overlap) to the magnet 600 in the "first direction" and the "second direction".

[0065] One or more magnetic sensors 230 can sense the magnetic force of at least one of a plurality of magnets 600. The magnetic sensors 230 can sense the magnetic force of the magnet 600 and output a sensed signal. On the main board 900, the magnetic signal of the magnetic sensors 230 can be processed to identify the position of the magnet 600. Based on this, an accurate autofocusing function, a shake correction function, and driving of the aperture 500 can be performed (feedback control).

[0066] One or more magnetic sensors 230 can include a first magnetic sensor 231, a second magnetic sensor 232, a third magnetic sensor 233, and a fourth magnetic sensor 234.

[0067] The first magnetic sensor 231 can be a "hall sensor". The first magnetic sensor 231 can be disposed at the first connecting portion 201 of the first housing 200. The first magnetic sensor 231 can be disposed on the first substrate 221, separated from the first coil 211. The first magnetic sensor 231 can be arranged to correspond (oppose, overlap) with the first magnet 610 in the "second direction". The first magnetic sensor 231 can sense the magnetic force of the first magnet 610 and thereby output a first sensing signal.

[0068] The second magnetic sensor 232 can be a "hall sensor". The second magnetic sensor 232 can be disposed at the second connecting portion 202 of the first housing 200. The second magnetic sensor 232 can be disposed on the second substrate 222, separated from the second coil 212. The second magnetic sensor 232 can be arranged to correspond (oppose, overlap) with the second magnet 620 in the "first direction". The second magnetic sensor 232 can sense the magnetic force of the second magnet 620 and thereby output a second sensing signal.

[0069] The third magnetic sensor 233 can be a "hall sensor". The third magnetic sensor 233 can be disposed at the third connecting portion 203 of the first housing 200. The third magnetic sensor 233 can be disposed on the third substrate 223, separated from the third coil 213. The third magnetic sensor 233 can be arranged to correspond (oppose, overlap) with the third magnet 630 in the "second direction". The third magnetic sensor 233 can sense the magnetic force of the third magnet 630 and thereby output a third sensing signal.

[0070] The fourth magnetic sensor 234 can be a "hall sensor". The fourth magnetic sensor 234 can be disposed at the fourth connecting portion 204 of the first housing 200. The fourth magnetic sensor 234 can be disposed on the fourth substrate 224, separated from the fourth coil 214. The fourth magnetic sensor 234 can be arranged to correspond (oppose, overlap) with the fourth magnet 640 in the "first direction". The fourth magnetic sensor 234 can sense the magnetic force of the fourth magnet 640 and thereby output a fourth sensing signal.

[0071] There can be a plurality of yokes 240. The yokes 240 can be disposed on the substrate 220. The yokes 240 can be arranged to correspond (oppose, overlap) with the coils 210 and the magnets 600. The plurality of yokes 240 can each be arranged to correspond (oppose, overlap) with the plurality of coils 210 and the plurality of magnets 600 in the "first direction" and the "second direction". The yokes 240 focus the electromagnetic force of the coils 210 and the magnetic force of the magnets 600 so that the electromagnetic interaction between the coils 210 and the magnets 600 occurs smoothly.

[0072] The plurality of yokes 240 can include a first yoke 241, a second yoke 242, a third yoke 243, and a fourth yoke 244.

[0073] The first yoke 241 can be a magnetic body in a flat plate form. The first yoke 241 can be disposed at the first connecting portion 201 of the first housing 200. The first yoke 241 can be disposed on the first substrate 221. The first yoke 241 can be arranged to correspond (oppose, overlap) with the first coil 211 and the first magnet 610 in the "second direction". The first yoke 241 can focus the electromagnetic force of the first coil 211 and the magnetic force of the first magnet 610.

[0074] The second yoke 242 can be a magnetic body in a flat plate form. The second yoke 242 can be disposed at the second connecting portion 202 of the first housing 200. The second yoke 242 can be disposed on the second substrate 222. The second yoke 242 can be arranged so as to correspond (oppose, overlap) with the second coil 212 and the second magnet 620 in the "first direction". The second yoke 242 can focus the electromagnetic force of the second coil 212 and the magnetic force of the second magnet 612.

[0075] The third yoke 243 can be a magnetic body in a flat plate form. The third yoke 243 can be disposed at the third connecting portion 203 of the first housing 200. The third yoke 243 can be disposed on the third substrate 223. The third yoke 243 can be arranged so as to correspond (oppose, overlap) with the third coil 213 and the third magnet 630 in the "second direction". The third yoke 243 can focus the electromagnetic force of the third coil 213 and the magnetic force of the third magnet 630.

[0076] The fourth yoke 244 can be a magnetic body in a flat plate form. The fourth yoke 244 can be disposed at the fourth connecting portion 204 of the first housing 200. The fourth yoke 244 can be disposed on the fourth substrate 224. The fourth yoke 244 can be arranged so as to correspond (oppose, overlap) with the fourth coil 214 and the fourth magnet 640 in the "first direction". The fourth yoke 244 can focus the electromagnetic force of the fourth coil 214 and the magnetic force of the fourth magnet 640.

[0077] The second housing 300 can be disposed inside the first housing 200. Inside the second housing 300, a bobbin 400, a lens module 410, a moving member 500, a second ball bearing 510, a third ball bearing 520, a magnet 600, and a diaphragm 700 can be disposed. Under the second housing 300, a base 800 and a substrate 900 can be disposed.

[0078] The second housing 300 can include a lower plate in the form of a square plate with a hole formed in the center along the optical axis, and four side plates extending upward from each side of the lower plate. The second housing 300 can form a hole along the optical axis on the lower surface by the lower plate and the side plates of the second housing 300, and an internal space with an open upper surface can be formed. The light transmitted through the lens module 410 can pass through the hole in the lower plate of the second housing 300.

[0079] A plurality of first ball bearings 310 can be arranged between the second housing 300 and the first housing 200. The second housing 300 can move in the "optical axis direction" by the first ball bearings 310. That is, the second housing 300 can be movably connected to the first housing 200 in the "optical axis direction".

[0080] A first magnet 610 can be arranged in the second housing 300. The first magnet 610 can be arranged on the side plate of the second housing 300 that is arranged to correspond (oppose, overlap) to the first connecting portion 201 in the "second direction". When power is applied to the first coil 211 and the first coil 211 and the first magnet 610 interact electromagnetically, a driving force for the second housing 300 to move in the "optical axis direction" can be generated.

[0081] When the second housing 300 moves in the "optical axis direction", the lens module 410 can move in the "optical axis direction" together with the second housing 300. The focusing function (AF) can be performed by such a process.

[0082] The second housing 300 can include a plastic material. The second housing 300 can be a plastic injection molding. However, the material of the second housing 300 is not limited to this.

[0083] The bobbin 400 can be disposed inside the second housing 300. A lens module 410 can be disposed inside the bobbin 400. A diaphragm 500 can be disposed inside or on the bobbin 400. A moving member 500, a second ball bearing 510, and a third ball bearing 520 can be disposed below the bobbin 400.

[0084] The bobbin 400 can be in a hollow form with a hole formed along the optical axis. Light passing through the hole in the upper plate of the cover 100 can pass through the hole in the bobbin 400.

[0085] A plurality of second ball bearings 510 can be disposed between the bobbin 400 and the moving member 500. The bobbin 400 can move in the "first direction" or tilt in the "first direction" by the second ball bearing 510. That is, the bobbin 400 can be connected to the moving member 500 so as to move in the "first direction" or be tilted in the "first direction".

[0086] A second magnet 620 and a third magnet 630 can be disposed on the bobbin 400. The second magnet 620 can be disposed on a side portion of the bobbin 400 arranged to correspond (oppose, overlap) to the second connecting portion 202 of the housing 200 in the "first direction". The third magnet 630 can be disposed on a side portion of the bobbin 400 arranged to correspond (oppose, overlap) to the third connecting portion 203 of the housing 200 in the "second direction".

[0087] When power is applied to the second coil 212 and the second coil 212 and the second magnet 620 interact electromagnetically, a driving force can be generated to move the bobbin 400 in the "first direction" or tilt the bobbin 400 in the "first direction".

[0088] When power is applied to the third coil 213 and the third coil 213 and the third magnet 630 interact electromagnetically, a driving force can be generated to move the bobbin 400 in the "second direction" or tilt it in the "second direction".

[0089] When the bobbin 400 moves in the "first direction" or tilts in the "first direction", the lens module 410 can move in the "first direction" or tilt in the "first direction" together with the bobbin 400. Through such a process, the shake correction function (OIS(x)) can be performed with respect to the "first direction (x-axis).

[0090] When the bobbin 400 moves in the "second direction" or tilts in the "second direction", the lens module 410 can move in the "second direction" or tilt in the "second direction" together with the bobbin 400. Through such a process, the shake correction function (OIS(y)) can be performed with respect to the "second direction (y-axis).

[0091] The bobbin 400 can include a plastic material. The bobbin 400 can be a plastic injection molding. However, the material of the bobbin 400 is not limited thereto.

[0092] The lens module 410 can be disposed inside the bobbin 400. The lens module 410 can include a plurality of lenses and a lens barrel. However, the configuration of the lens module 410 is not limited to a lens barrel, and any structure that can support one or more lenses is possible. The light that has passed through the lens module can be irradiated onto the image sensor 910.

[0093] The moving member 500 can be disposed under the bobbin 400. The moving member 500 can be disposed on the lower plate of the second housing. The moving member 500 can be disposed between the second housing 300 and the bobbin 400.

[0094] The moving member 500 can be in the form of a square plate with a hole formed in the center along the optical axis. The light passing through the hole of the bobbin 400 can pass through the hole of the moving member 500.

[0095] The moving member 500 can include a plastic material. The moving member 500 can be a plastic injection molding. However, the material of the moving member 500 is not limited thereto.

[0096] A plurality of second ball bearings 510 can be arranged between the moving member 500 and the bobbin 400. The bobbin 400 can move in the "first direction" or tilt in the "first direction" by the second ball bearings 510. That is, the bobbin 400 can be connected to the moving member 500 so as to be movable in the "first direction" or tiltable in the "first direction".

[0097] A plurality of third ball bearings 520 can be arranged between the moving member 500 and the second housing 300. The moving member 500 can move in the "second direction" or tilt in the "second direction" by the third ball bearings 520. That is, the moving member 500 can be connected to the second housing 300 so as to be movable in the "second direction" or tiltable in the "second direction". The bobbin 400 can move in the "second direction" or tilt in the "second direction" by the moving member 500.

[0098] There can be a plurality of magnets 600. The plurality of magnets 600 can be respectively distributed and arranged between the second housing 300, the bobbin 400, and the aperture 700. The plurality of magnets 600 can be respectively arranged so as to correspond (oppose, overlap) to the plurality of coils 210 in the "first direction" or the "second direction".

[0099] The magnet 600 can interact electromagnetically with the coil 210 to provide a driving force to the second housing 300 and the bobbin 400. Due to the electromagnetic interaction between the magnet 600 and the coil 210, the second housing 300 can move in the "optical axis direction", and the autofocus function (AF) can be performed. Due to the electromagnetic interaction between the magnet 600 and the coil 210, the bobbin 400 can move in the "first direction (x-axis)" or be tilted in the "first direction (x-axis)", and the shake correction function (OIS(x)) can be performed based on the "first direction (x-axis)". Due to the electromagnetic interaction between the magnet 600 and the coil 210, the bobbin 400 can move in the "second direction (y-axis)" or be tilted in the "second direction (y-axis)", and the shake correction function (OIS(y)) can be performed based on the "second direction (y-axis)".

[0100] The plurality of magnets 600 can include a first magnet 610, a second magnet 620, a third magnet 630, and a fourth magnet 600.

[0101] The first magnet 610 and the third magnet 630 can be arranged symmetrically with respect to the "optical axis". The first magnet 610 and the third magnet 630 can be arranged parallel to each other with respect to the "first direction". The first magnet 610 and the third magnet 630 can be arranged such that their inner surfaces correspond (face each other, overlap) in the "second direction".

[0102] The second magnet 620 and the fourth magnet 640 can be separated from the first magnet 610 and the third magnet 630. The second magnet 620 and the fourth magnet 640 can be arranged symmetrically with respect to the "optical axis". The second magnet 620 and the fourth magnet 640 can be arranged parallel to each other with respect to the "second direction". The second magnet 620 and the fourth magnet 640 can be arranged such that their inner surfaces correspond (face each other, overlap) in the "first direction".

[0103] The first magnet 610 can be arranged to correspond (oppose, overlap) with the first coil 211 in the "second direction". The first magnet 610 can be in the form of a flat magnet whose outer surface corresponds (opposes, overlaps) with the inner surface of the first coil 211 in the "second direction". The first magnet 610 can interact electromagnetically with the first coil 211 to perform an autofocus function (AF). The first magnet 610 can be arranged on the side plate of the second housing 300 that is arranged to correspond (oppose, overlap) with the first connecting portion 201 in the "second direction".

[0104] The second magnet 620 can be arranged to correspond (oppose, overlap) with the second coil 212 in the "first direction". The second magnet 620 can be in the form of a flat magnet whose outer surface corresponds (opposes, overlaps) with the inner surface of the first coil 211 in the "first direction". The second magnet 620 can interact electromagnetically with the second coil 212 to perform a shake correction function (OIS(x)) with respect to the "first direction (x-axis)". The second magnet 620 can be arranged on the side portion of the bobbin 400 that is arranged to correspond (oppose, overlap) with the second connecting portion 202 in the "first direction".

[0105] The third magnet 630 can be arranged to correspond (oppose, overlap) with the third coil 213 in the "second direction". The third magnet 630 can be a flat magnet whose outer surface corresponds (opposes, overlaps) with the inner surface of the third coil 213 in the "second direction". The third magnet 630 can interact electromagnetically with the third coil 213 to perform a shake correction function (OIS(y)) with respect to the "second direction (y-axis)". The third magnet 630 can be arranged on the side portion of the bobbin 400 that is arranged to correspond (oppose, overlap) with the third connecting portion 203 in the "second direction".

[0106] The fourth magnet 640 can be arranged to correspond (oppose, overlap) with the fourth coil 214 in the "first direction". The fourth magnet 640 can be a flat magnet whose outer surface corresponds (opposes, overlaps) with the inner surface of the fourth coil 214 in the "second direction". The fourth magnet 640 can drive the aperture 700 by interacting electromagnetically with the fourth coil 214.

[0107] The aperture 700 can be arranged on or in the bobbin 400. When the aperture 700 is arranged in the bobbin 400 (not shown), the aperture 700 can be arranged between a plurality of lenses of the lens module 410. The fourth magnet 640 can be arranged on the aperture 700.

[0108] The aperture 700 can include a stator 710 including a first guide 711 and a second guide 712, a mover 720 arranged on the stator 710 on which the fourth magnet 640 is arranged, a connecting rod 730 rotatably connected to the mover 720 at one side, a rotor 740 rotatably connected to the other side of the connecting rod 730 and rotatably connected to the stator 710 at the center, a first blade 750 arranged on one side of the rotor 740, and a second blade 760 arranged on the other side of the rotor 740.

[0109] Due to the electromagnetic interaction between the fourth coil 214 and the fourth magnet 640, the mover 720 can move in the "first direction". In order to smooth the movement of the mover 720, a plurality of fourth ball bearings (not shown) can be arranged between the stator 710 and the mover 720.

[0110] By the movement of the mover 720 in the "first direction", the driving force can be transmitted to the rotor 740 via the connecting rod 730. The rotor 740 can rotate in the forward or reverse direction, and due to the rotation of the rotor 740, the first blade 750 and the second blade 750 can move in the "second direction".

[0111] The first blade 750 can include a first connecting rod 751 rotatably connected to one side of the rotor 740 so as to move along the first guide 711, and a first blocking plate 752 disposed on the other side of the first connecting rod 751 and having a first groove 752-1 formed therein.

[0112] The second blade 760 can include a second connecting rod 761 rotatably connected to the other side of the rotor 740 so as to move along the second guide 712, and a second blocking plate 762 disposed on the other side of the second connecting rod 761 and having a second groove 762-1 formed therein.

[0113] At least a part of the first groove 752-1 and the second groove 762-1 overlap in the optical axis direction, and the first groove 752-1 and the second groove 762-1 can form a hole 770. The area of the hole 770 formed by the first groove 752-1 and the second groove 762-1 can be adjusted by the movement of the first blade 750 and the second blade 750 in the "second direction". That is, the area of the hole 770 formed by the first groove 752-1 and the second groove 762-1 can be adjusted by the electromagnetic interaction between the fourth coil 214 and the fourth magnet 640.

[0114] The aperture 700 can adjust the amount of light irradiated onto the image sensor 910.

[0115] The base 800 can be disposed on the main substrate 900. The base 800 can be disposed under the first housing 200, the second housing 300, the bobbin 400, and the moving member 500. The upper surface of the base 800 can be in contact with the lower surface of the first housing 200 and the lower surface of the lower plate of the second housing 300. That is, the base 800 can be a member that supports and fixes the first housing 200, the second housing 300, the bobbin 400, and the moving member 500.

[0116] The base 800 can be in the form of a square plate with a hole formed in the center in the optical axis direction. The hole in the base 800 can transmit the light that has passed through the hole 770 of the lens module 410 and the aperture 700. The light that has passed through the hole in the base 800 can be irradiated onto the image sensor 910.

[0117] The main board 900 can be a printed circuit board (PCB). The main board 900 can be disposed under the cover 100, the first housing 200, the coil 210, the substrate 220, the magnetic sensor 230, the yoke 240, the second housing 300, the first ball bearing 310, the bobbin 400, the lens module 410, the moving member 500, the second ball bearing 510, the third ball bearing 520, the magnet 600, the aperture 700, and the base 800. An image sensor 910 can be disposed on the main board 900 along the optical axis. The image sensor 910 can be mounted on the main board 900. For example, the image sensor 910 can be located inside the upper surface of the main board 900, and the cover 100 and the base 800 can be located outside the upper surface of the main board 900. With such a structure, the light that has passed through the hole of the lens module 410, the hole 770 of the aperture 700, and the hole of the base 800 can be irradiated onto the image sensor. The main board 900 can supply power to the camera module 1000 (for example, supply power to the coil). A control unit for controlling the camera module 1000 can be mounted on the main board 900.

[0118] The image sensor 910 can output the irradiated light as an image signal. The image signal output to the image sensor can be transferred to the display unit (display panel) of the optical device via the main board 910. The image sensor 910 can be a CCD (charge coupled device), MOS (metal oxide semi-conductor), CPD, or CID. However, the type of the image sensor 910 is not limited thereto.

[0119] The infrared cut-off filter can block the light in the infrared region from being incident on the image sensor 910. The infrared cut-off filter can be located, for example, between the lens module 410 and the image sensor 910. The infrared cut-off filter can be located on a holder member (not shown) provided separately from the base 800. However, the infrared filter may be attached to a hole formed in the central portion of the base 800. The infrared filter can be formed of, for example, a film material or a glass material. The infrared filter can be formed by coating an infrared cut-off coating substance on a flat optical filter such as an imaging surface protection cover glass or a cover glass.

[0120] The control unit can be mounted on the main board 900. However, the position of the control unit is not limited thereto. The control unit can be located outside the camera module 1000. The control unit can control the direction, strength, amplitude, etc. of the current supplied to each component constituting the camera module 1000. The control unit can control the camera module 1000 to perform an autofocus function, an anti-shake function, and the driving of the aperture 700.

[0121] As described above, all the components constituting the embodiments of the present invention have been described as being combined or combined and operating together, but the present invention is not necessarily limited to such embodiments. That is, within the scope of the object of the present invention, one or more of all the components can also be selectively combined and operate. Further, terms such as "including", "comprising" or "constituting" described above should be construed to mean that the corresponding components may be inherent, and thus should not exclude other components but rather be construed to further include other components, unless otherwise stated to the contrary. All terms, including technical and scientific terms, have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention pertains, unless otherwise defined. Commonly used terms together with pre-defined terms should be construed to be consistent with the meaning in the context of the related art, and should not be construed in an ideal or overly formal sense unless clearly defined in the present invention.

[0122] The above description merely exemplarily illustrates the technical idea of the present invention. Those of ordinary skill in the technical field to which the present invention pertains can make various modifications and variations without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are for the purpose of explanation rather than for limiting the technical idea of the present invention, and the scope of the technical idea of the present invention is not limited by such embodiments. The protection scope of the present invention should be construed according to the scope of the claims, and all technical ideas within the equivalent scope should be construed to be included in the scope of the rights of the present invention.

Claims

1. a first housing, a bobbin disposed within the first housing, a lens coupled to the bobbin, a diaphragm fixed to the bobbin, a substrate disposed in the first housing, a second coil and a fourth coil disposed on the substrate, a second magnet disposed on the bobbin and arranged to correspond to the second coil, a fourth magnet disposed on the diaphragm and arranged to correspond to the fourth coil, a fourth sensor disposed on the substrate and configured to sense the fourth magnet, comprising a lens driving device, the fourth coil overlaps the second coil in a first direction perpendicular to the optical axis direction of the lens, the bobbin is moved in the first direction by the second magnet and the second coil, the diaphragm includes a first blade and a second blade, the size of the hole formed by the first blade and the second blade is adjusted by the fourth magnet and the fourth coil, a lens driving device.

2. including a cover disposed on the first housing, the cover includes an upper plate and a plurality of side plates, the plurality of side plates of the cover include a first side plate and a third side plate disposed on opposite sides of each other, and a second side plate and a fourth side plate disposed on opposite sides of each other, the fourth coil is disposed between the fourth magnet and the fourth side plate of the cover, the lens driving device according to claim 1.

3. the second coil is disposed between the second magnet and the second side plate of the cover, the lens driving device according to claim 2.

4. the second coil, the second magnet, the fourth magnet and the fourth coil overlap each other in the first direction, the lens driving device according to any one of claims 1 to 3.

5. the fourth sensor is disposed within the fourth coil, the lens driving device according to any one of claims 1 to 4.

6. including a second sensor disposed on the substrate and configured to sense the second magnet, the lens driving device according to any one of claims 1 to 5.

7. the fourth sensor overlaps the second sensor in the first direction, the lens driving device according to claim 6.

8. a second housing disposed between the first housing and the bobbin, a first coil and a third coil disposed on the substrate, a first magnet disposed on the second housing and corresponding to the first coil, and, The lens driving device according to any one of claims 1 to 7, including a third magnet arranged on the bobbin and corresponding to the third coil.

9. The first to fourth coils are separated from each other. The first coil and the third coil are arranged on opposite sides of each other. The second coil and the fourth coil are arranged on opposite sides of each other. The second housing moves in the optical axis direction by the first magnet and the first coil. The lens driving device according to claim 8, wherein the bobbin moves in a second direction perpendicular to both the optical axis direction and the first direction by the third magnet and the third coil.

10. The substrate includes first to fourth substrates and a connecting substrate connecting the first to fourth substrates. The first coil is arranged on the first substrate. The second coil is arranged on the second substrate. The third coil is arranged on the third substrate. The fourth coil is arranged on the fourth substrate. The lens driving device according to claim 8 or 9.

11. A first sensor arranged on the substrate for sensing the first magnet, and The lens driving device according to any one of claims 8 to 10, including a third sensor arranged on the substrate for sensing the third magnet.

12. The first housing First corners, second corners, third corners, and fourth corners that are separated from each other. A first connecting portion connecting the first corner and the second corner. A second connecting portion connecting the second corner and the third corner. A third connecting portion connecting the third corner and the fourth corner, and The lens driving device according to any one of claims 8 to 11, including a fourth connecting portion connecting the fourth corner and the first corner. The first coil is arranged on the first connecting portion. The second coil is arranged on the second connecting portion. The third coil is arranged on the third connecting portion. The fourth coil is arranged on the fourth connecting portion.

13. The aperture A stator including a first guide and a second guide, and A mover arranged on the stator and on which the fourth magnet is arranged. A connecting rod whose one side is rotatably connected to the mover. The lens driving device includes a rotor rotatably connected to the other side of the connecting rod and whose center is rotatably connected to the stator. The first blade is arranged on one side of the rotor. The lens driving device according to claim 9, wherein the second blade is disposed on the other side of the rotor.

14. The first blade includes a first connecting rod rotatably connected to one side of the rotor and moving along the first guide, and a first blocking plate disposed on the other side of the first connecting rod and having a first groove formed therein. The second blade includes a second connecting rod rotatably connected to the other side of the rotor and moving along the second guide, and a second blocking plate disposed on the other side of the second connecting rod and having a second groove formed therein. The lens driving device according to claim 13, wherein at least a part of the first groove and the second groove overlap in the optical axis direction.

15. The lens driving device according to claim 14, wherein the hole formed by the first blade and the second blade is the hole formed by the first groove and the second groove.

16. The lens driving device according to any one of claims 8 to 15, including at least one first ball bearing disposed between the first housing and the second housing.

17. A first housing, a cover disposed on the first housing, a bobbin disposed in the first housing, a lens coupled to the bobbin, a diaphragm fixed to the bobbin, a substrate disposed on the first housing, a second coil and a fourth coil disposed on the substrate, a second magnet disposed on the bobbin and corresponding to the second coil, a fourth magnet disposed on the diaphragm and corresponding to the fourth coil, and a fourth sensor disposed on the substrate and sensing the fourth magnet. The cover includes an upper plate and a plurality of side plates. The plurality of side plates of the cover include a first side plate and a third side plate disposed on opposite sides of each other, and a second side plate and a fourth side plate disposed on opposite sides of each other. The fourth coil is disposed between the fourth magnet and the fourth side plate of the cover. The bobbin moves in a first direction perpendicular to the optical axis direction of the lens by the second magnet and the second coil. The diaphragm includes a first blade and a second blade. A lens driving device, wherein the size of the hole formed by the first blade and the second blade is adjusted by the fourth magnet and the fourth coil.

18. A printed circuit board, an image sensor disposed on the printed circuit board, and A camera module including the lens driving device according to any one of claims 1 to 17 disposed on the printed circuit board.

19. A frame, A display disposed on one surface of the frame, and An optical device including the camera module according to claim 18 disposed on the frame and electrically connected to the display.

Images