Lens driving device, camera module, and optical apparatus

Abstract

The present invention relates to a lens driving device including a first housing, a coil holder disposed in the first housing, an iris disposed on the coil holder, a plate disposed on the first housing, a second coil and a fourth coil disposed on the plate, a second magnet disposed on the coil holder and facing the second coil, a fourth magnet disposed on the iris and facing the fourth coil, and a fourth sensor disposed on the plate and configured to sense the fourth magnet, wherein the fourth coil overlaps the second coil in a first direction perpendicular to an optical axis direction.

Description

[0001] This application is a divisional application of Chinese Patent Application No. 201880051607.9, filed on February 7, 2020, with the title of "Lens Driving Apparatus, Camera Module, and Optical Equipment". The parent application has an international filing date of August 7, 2018, an international application number of PCT / KR2018 / 008966, and a priority date of August 7, 2017. TECHNICAL FIELD

[0002] The present embodiment relates to a lens driving apparatus, a camera module, and an optical equipment. BACKGROUND

[0003] This section provides background information relating to the present application and is not necessarily prior art.

[0004] With the popularization of the widespread use of various mobile terminals and the commercialization of wireless Internet services, consumer demand related to mobile terminals has also become diversified to allow various types of peripheral devices to be installed on mobile terminals.

[0005] A camera module is one of representative items that capture an object in a picture or a video. Recently, there has been a rise in camera modules having an auto focus function, which is a function of automatically adjusting a focus in response to a distance from an object, and an OIS function of moving or tilting a lens module in a direction perpendicular to an optical axis to offset a vibration (movement) on an image sensor caused by an external force.

[0006] Meanwhile, an aperture is a device that adjusts the amount of light passing through a lens module by adjusting the size of a hole.

[0007] A conventional camera module has a disadvantage in that since an auto focus function, an OIS (Optical Image Stabilization) function, and an aperture driving function are performed by separate driving members, the structure of the camera module is complicated. SUMMARY

[0008] Technical subject

[0009] The present embodiment provides a lens driving apparatus, a camera module, and an optical equipment configured to perform an auto focus function, an OIS function, and an aperture driving using a single driving member, which are compact in structure.

[0010] Technical solution

[0011] A lens driving device according to an exemplary embodiment of the present application includes a first housing, a second housing disposed at an inside of the first housing, a bobbin disposed at an inside of the second housing, an iris disposed on or at the bobbin, a first coil, a second coil, a third coil, and a fourth coil disposed on the first housing, a first magnet disposed on the second housing and disposed opposite the first coil, a second magnet disposed on the bobbin and disposed opposite the second coil, a third magnet disposed on the bobbin and disposed opposite the third coil, and a fourth magnet disposed on the iris and disposed opposite the fourth coil, wherein the first coil, the second coil, the third coil, and the fourth coil are disposed spaced apart from each other, the first coil and the third coil are disposed opposite each other with the first magnet and the third magnet interposed therebetween, and the second coil and the fourth coil are disposed opposite each other with the second magnet and the fourth magnet interposed therebetween.

[0012] The first housing can include a first corner, a second corner, a third corner, and a fourth corner spaced apart 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, wherein 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.

[0013] The lens driving device can further include a plate disposed at the inside with the first coil, the second coil, the third coil, and the fourth coil, wherein the plate can be disposed on the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion.

[0014] The plate can include a first plate disposed on the first connecting portion and disposed at the inside with the first coil, a second plate disposed on the second connecting portion and disposed at the inside with the second coil, a third plate disposed on the third connecting portion and disposed at the inside with the third coil, and a fourth plate disposed on the fourth connecting portion and disposed at the inside with the fourth coil.

[0015] The lens driving device can further include one or more magnetic sensors disposed at the inside of the plate and spaced apart from the first coil, the second coil, the third coil, and the fourth coil to detect at least one magnetic force of the first magnet, the second magnet, the third magnet, and the fourth magnet.

[0016] The second housing can move in the optical axis direction by electromagnetic interaction between the first magnet and the first coil, the coil holder can move or tilt in a first direction perpendicular to the optical axis by electromagnetic interaction between the second magnet and the second coil, the coil holder can move or tilt in a second direction perpendicular to both the optical axis and the first direction by electromagnetic interaction between the third magnet and the third coil, the diaphragm can include a stator including first and second guides, a mover disposed on the stator and provided with a fourth magnet, a connecting rod rotatably connected to the mover on 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 vane disposed on one side of the rotor, and a second vane disposed on the other side of the rotor, wherein the first vane can include a first connecting rod rotatably connected to one side of the rotor on one side and moving along the first guide, and a first blocking plate disposed on the other side of the first connecting rod and formed with a first slot, and the second vane can include a second connecting rod rotatably connected to the other side of the rotor on one side and moving along the second guide, and a second blocking plate disposed on the other side of the second connecting rod and formed with a second slot, and wherein at least a portion of the second slot and the first slot can overlap in the optical axis direction, and the area of a hole formed by the first and second slots can be adjusted by electromagnetic interaction between the fourth magnet and the fourth coil.

[0017] The lens driving device can further include one or more first ball bearings interposed between the first housing and the second housing, a moving member interposed between the second housing and the coil holder, one or more second ball bearings interposed between the moving member and the coil holder, and one or more third ball bearings interposed between the second housing and the moving member.

[0018] The lens driving device can further include a cover provided with the first housing, the second housing, the coil holder, the diaphragm, 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 at the inside.

[0019] A camera module according to an exemplary embodiment of the present application can include a lens driving device, a lens module disposed on the lens driving device and including a plurality of lenses, a main board disposed below the lens driving device, and an image sensor mounted on the main board and disposed on an optical axis of the lens module, wherein the lens driving device can include a first housing, a second housing disposed at an inside of the first housing, a coil holder disposed at an inside of the second housing, an iris disposed on or at the coil holder, a first coil, a second coil, a third coil, and a fourth coil disposed on the first housing, a first magnet disposed on the second housing and disposed opposite the first coil, a second magnet disposed on the coil holder and disposed opposite the second coil, a third magnet disposed on the coil holder and disposed opposite the third coil, and a fourth magnet disposed on the iris and disposed opposite the fourth coil, wherein the first coil, the second coil, the third coil, and the fourth coil are disposed spaced apart from each other, the first coil and the third coil are disposed opposite each other with the first magnet and the third magnet interposed therebetween, and the second coil and the fourth coil are disposed opposite each other with the second magnet and the fourth magnet interposed therebetween.

[0020] An optical device according to an exemplary embodiment of the present application can include a frame, a display disposed at one surface of the frame, and a camera module disposed at an inside of the frame to be electrically connected with the display, wherein the camera module can include a lens module disposed on a lens driving device to include a plurality of lenses, a main board disposed below the lens driving device, and an image sensor mounted on the main board and disposed on an optical axis of the lens module, and wherein the lens driving device can include a first housing, a second housing disposed at an inside of the first housing, a coil holder disposed at an inside of the second housing, an iris disposed on or at the coil holder, a first coil, a second coil, a third coil, and a fourth coil disposed on the first housing, a first magnet disposed on the second housing and disposed opposite the first coil, a second magnet disposed on the coil holder and disposed opposite the second coil, a third magnet disposed on the coil holder and disposed opposite the third coil, and a fourth magnet disposed on the iris and disposed opposite the fourth coil, wherein the first coil, the second coil, the third coil, and the fourth coil are disposed spaced apart from each other, the first coil and the third coil are disposed opposite each other with the first magnet and the third magnet interposed therebetween, and the second coil and the fourth coil are disposed opposite each other with the second magnet and the fourth magnet interposed therebetween.

[0021] A lens driving apparatus according to an exemplary embodiment of the present application can include a first housing, a coil holder disposed in the first housing, an iris disposed on the coil holder, a plate disposed on the first housing, a second coil and a fourth coil disposed on the plate, a second magnet disposed on the coil holder and facing the second coil, a fourth magnet disposed on the iris and facing the fourth coil, and a fourth sensor disposed on the plate and configured to sense the fourth magnet, wherein the fourth coil overlaps the second coil in a first direction perpendicular to an optical axis direction.

[0022] A lens driving apparatus according to an exemplary embodiment of the present application can include a first housing, a cover disposed on the first housing, a coil holder disposed in the first housing, an iris disposed on the coil holder, a plate disposed on the first housing, a second coil and a fourth coil disposed on the plate, a second magnet disposed on the coil holder and facing the second coil, a fourth magnet disposed on the iris and facing the fourth coil, and a fourth sensor disposed on the plate and configured to sense the fourth magnet, wherein the cover includes an upper plate and a plurality of side plates, wherein the plurality of side plates of the cover include a first side plate and a third side plate facing each other, and a second side plate and a fourth side plate facing each other, and wherein the fourth coil is disposed between the fourth magnet and the fourth side plate of the cover.

[0023] A camera module according to an exemplary embodiment of the present application can include a printed circuit board (PCB), an image sensor disposed on the printed circuit board, a lens driving apparatus according to the above disposed above the printed circuit board, and a lens coupled to the coil holder of the lens driving apparatus.

[0024] An optical device according to an exemplary embodiment of the present application can include a frame, a display disposed on one surface of the frame, and a camera module according to the above disposed on the frame and electrically connected with the display.

[0025] A lens driving apparatus according to an exemplary embodiment of the present application can include a first housing, a coil holder disposed in the first housing, a plate disposed on the first housing, a coil disposed on the plate, and a magnet disposed on the coil holder.

[0026] A lens driving apparatus according to an exemplary embodiment of the present application can include a first housing, a second housing disposed in the first housing, a bobbin disposed in the second housing, an iris disposed on the bobbin, a plate disposed on the first housing, first to fourth coils disposed on the plate, a first magnet disposed on the second housing and facing the first coil, a second magnet disposed on the bobbin and facing the second coil, a third magnet disposed on the bobbin and facing the third coil, and a fourth magnet disposed on the iris and facing the fourth coil, wherein the second housing is configured to move in an optical axis direction by the first magnet and the first coil, and wherein the bobbin and the iris are configured to move together with the second housing when the second housing moves in the optical axis direction.

[0027] Beneficial effects

[0028] A lens driving apparatus according to an exemplary embodiment can perform all of an auto focus function, an OIS function, and an iris driving function in response to electromagnetic interaction between a coil disposed on a first housing and magnets disposed on a second housing, a bobbin, and an iris, respectively, to achieve a compact structure. Furthermore, embodiments of the present application provide a camera module including the lens driving apparatus and an optical apparatus including the camera module. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 FIG. 1 is a conceptual cross-sectional view schematically illustrating a camera module according to an exemplary embodiment of the present application.

[0030] Figure 2 FIG. 2 is a conceptual exploded perspective view schematically illustrating a camera module according to an exemplary embodiment of the present application.

[0031] Figure 3 (a) is a perspective view schematically illustrating a first housing according to an exemplary embodiment of the present application, in Figure 3 (b) is a plan view of a plate according to an exemplary embodiment of the present application, viewed from the inside, and in Figure 3 (b) is a plan view of a plate according to an exemplary embodiment of the present application, viewed from the outside.

[0032] Figure 4 FIG. 6 is a plan view schematically illustrating a first housing, a second housing, a bobbin, an iris, coils, and magnets according to an exemplary embodiment of the present application.

[0033] Figure 5 FIG. 7 is a plan view schematically illustrating an iris according to an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0034] Some example embodiments of the present application will be described in detail with reference to the accompanying drawings. In describing the drawings, the same reference numerals will be assigned to the same elements, if possible, even on different drawings, and a repeated description of the same elements will be omitted. In addition, well-known features or functions can be omitted or simplified in order not to obscure the embodiments being described.

[0035] In describing the elements in the example embodiments of the present application, first, second, A, B, (a), (b), and the like terms can be used. These terms can be used only to distinguish one element from another element, and the nature, order, or sequence is not limited by these terms. When one element is referred to as being "accessed," "coupled to," or "connected to" another element, it should be understood that the element can be directly accessed, connected to, or coupled to the other element, or there can be intervening elements between the element and the other element.

[0036] The term "optical axis" used hereinafter can be defined as an optical axis of a lens module coupled to a lens driving device. The "optical axis direction" can be parallel to the z-axis. The term "first direction" used hereinafter can be defined as being perpendicular to the optical axis. The "first direction" can be parallel to the x-axis. The term "second direction" used hereinafter can be defined as being perpendicular to both the optical axis direction and the first direction. The "second direction" can be defined as being parallel to the y-axis.

[0037] However, it should be noted that the "optical axis," the "first direction," and the "second direction" are not limited to being perpendicular to each other. For example, the "optical axis" and the "first direction" can be obliquely disposed at an angle other than 90°, and the "second direction" can be obliquely disposed at an angle other than 90° with respect to both the "optical axis" and the "first direction."

[0038] The term "autofocus function" used hereinafter can be defined as a function of matching the focal point of an object by adjusting the distance to the image sensor by moving the lens module in the optical axis direction according to the distance to the object to allow a clear image of the object to be obtained from the image sensor. Meanwhile, the "autofocus function" can be used interchangeably with the "AF (Auto Focus) function."

[0039] The term "hand-shake correction function" used hereinafter can be defined as a function of moving or tilting the lens module in a direction perpendicular to the optical axis (the first direction or the second direction) to offset the vibration (movement) generated on the image sensor by an external force. Meanwhile, the "hand-shake correction function" can be used interchangeably with the "OIS (Optical Image Stabilization)" function.

[0040] Hereinafter, a configuration of an "optical device" according to an exemplary embodiment of the present application will be described. The optical device can be a handset, a mobile phone, a smart phone, a portable smart device, a digital camera, a notebook computer (laptop), a digital broadcast terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), and a navigation device. However, the present application is not limited thereto, and any device capable of capturing an image or a photo can be the optical device.

[0041] An "optical device" according to an exemplary embodiment of the present application can include a frame as an external member, a display panel disposed at one surface of the frame to display information, and a camera module disposed at an inside of the frame. The camera module can photograph an image or a photo, and can be electrically connected to the display panel. The image photographed by the camera module can be reproduced by the display panel.

[0042] Now, a configuration of a "camera module" according to an exemplary embodiment of the present application will be described with reference to the accompanying drawings. Figure 1 FIG. 1 is a cross-sectional view conceptually illustrating a camera module according to an exemplary embodiment of the present application, Figure 2 FIG. 2 is an exploded perspective view conceptually illustrating a camera module according to an exemplary embodiment of the present application, Figure 3 (a) is a perspective view conceptually illustrating a first housing according to an exemplary embodiment of the present application, in Figure 3 (b) is a plan view of a plate according to an exemplary embodiment of the present application, viewed from the inside, and in Figure 3 (b) is a plan view of a plate according to an exemplary embodiment of the present application, viewed from the outside, Figure 4 FIG. 4 is a plan view conceptually illustrating a first housing, a second housing, a coil holder, an aperture, a coil, and a magnet according to an exemplary embodiment of the present application, and Figure 5 FIG. 5 is a plan view conceptually illustrating an aperture according to an exemplary embodiment of the present application.

[0043] The camera module (1000) can include a cover (100), a first housing (200), a coil (210), a plate (220), a magnetic sensor (230), a yoke (240), a second housing (300), a first ball bearing (310), a coil holder (400), a lens module (410), a moving member (500), a second ball bearing (510), a third ball bearing (520), a magnet (600), an aperture (700), a base (800), a main board (900), an image sensor (910), an IR (Infrared) cut filter (not shown), and a controller (not shown).

[0044] The cover (100), the first housing (200), the coil (210), the plate (220), the magnetic sensor (230), the yoke (240), the second housing (300), the first ball bearing (310), the coil holder (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) can be constituent elements of a "lens driving device".

[0045] The cover (100) can be an external member of the "camera module (1000)" and the "lens driving device". The inside of the cover (100) can be provided with the first housing (200), the coil (210), the plate (220), the magnetic sensor (230), the yoke (240), the second housing (300), the first ball bearing (310), the coil holder (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). The cover (100) can be provided with the main board (900) and the image sensor (910) below it.

[0046] The cover (100) can include a metal material. The cover (100) can prevent electromagnetic waves from being introduced from the outside, or can prevent electromagnetic waves from being released to the outside from the inside. Accordingly, the cover (100) can be referred to as a "protective cover". However, the material of the cover (100) is not limited thereto, and the material of the cover (100) can include, for example, a plastic material.

[0047] The cover (100) can have a square plate shape, and can include an upper plate in which a hole aligned with an optical axis is formed at the center, and four side plates extending downward from each side of the upper plate. The cover (100) can be formed of the upper plate of the cover (100) having the hole aligned with the optical axis at the upper surface, and the side plates of the cover (100), and can form an internal space with the lower surface open. External light reflected by an object can pass through the hole of the upper plate at the cover (100).

[0048] The cover (100) can be supported by the main board (900). The lower surface of the side plate at the cover (100) can be coupled with the upper surface of the main board (900). The portion coupled by the cover (100) and the main board (900) can be coated with an adhesive. However, in a variation (not shown), the cover (100) can be supported by the base (800). In this case, using the coupling relationship between the cover (100) and the main board (900) of the present exemplary embodiment, the coupling relationship between the cover (100) and the base (800) can be applied by analogy.

[0049] The first housing (200) can be disposed at the inside of the cover (100). The inside of the first housing (200) can be provided with 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), and the diaphragm (700). The first housing (200) can be provided with the coil (210), the plate (220), the magnetic sensor (230), and the yoke (240). The first housing (200) can be provided with the base (800) and the main board (900) under the same.

[0050] The first housing (200) can include a plastic material. The first housing (200) can be plastic injection molded. However, the material of the first housing (200) can not be limited thereto.

[0051] The first housing (200) can include: a first corner (C1), a second corner (C2), a third corner (C3), and a fourth corner (C4) each spaced apart from each other; a first connecting portion (201) connecting the first corner (C1) and the second corner (C2); a second connecting portion (202) connecting the second corner (C2) and the third corner (C3); a third connecting portion (203) connecting the third corner (C3) and the fourth corner (C4); and a fourth connecting portion (204) connecting the fourth corner (C4) and the first corner (C1).

[0052] The first corner (C1) and the third corner (C3) can be symmetrically disposed about the optical axis. The second corner (C2) and the fourth corner (C4) can be spaced apart from the first corner (C1) and the third corner (C3), and can be symmetrically disposed about the optical axis. The first corner (C1) can be interposed between the first connecting portion (201) and the second connecting portion (202). The second corner (C2) can be interposed between the second connecting portion (202) and the third connecting portion (203). The third corner (C3) can be interposed between the third connecting portion (203) and the fourth connecting portion (204). The fourth corner (C4) can be interposed between the fourth connecting portion (204) and the first connecting portion (201).

[0053] The first connecting portion (201) and the third connecting portion (203) can be symmetrically disposed about the optical axis. The first connecting portion (201) and the third connecting portion (203) can be disposed to correspond (face, overlap) in the "second direction".

[0054] The second connecting portion (202) and the fourth connecting portion (204) can be interposed between the first connecting portion (201) and the third connecting portion (203), and can be symmetrically disposed about the optical axis. The second connecting portion (202) and the fourth connecting portion (204) can be disposed to correspond (face, overlap) in the "first direction".

[0055] The first connection part 201 and the third connection part 203 can be disposed in parallel to each other. The second connection part 202 and the fourth connection part 204 can be disposed in parallel to each other. The first connection part 201 and the third connection part 203 can be disposed perpendicularly to the second connection part 202 and the fourth connection part 204.

[0056] The first connection part 201 can be provided with a first coil 211, a first plate 221, a first magnetic sensor 231, and a first yoke 241. The second connection part 202 can be provided with a second coil 212, a second plate 222, a second magnetic sensor 232, and a second yoke 242. The third connection part 203 can be provided with a third coil 213, a third plate 223, a third magnetic sensor 233, and a third yoke 243. The fourth connection part 204 can be provided with a fourth coil 214, a fourth plate 224, a fourth magnetic sensor 234, and a fourth yoke 244.

[0057] The connection parts of the housing 200 can be support members that support the coils 210, the plates 220, the magnetic sensors 230, and the yokes 240.

[0058] The coils 210 can be formed in plural. The coils 210 can be disposed on the first housing 200. The coils 210 can be disposed on the plates 220. The coils 210 can be electrically connected with the plates 220. Each of the plurality of coils 210 can be disposed to correspond to (face, overlap) each of the magnets 600 in the "first direction" and the "second direction". When power is applied to the coils 210, the coils 210 can electromagnetically interact with the magnets 600. Accordingly, an auto focus function, an OIS function, and driving of the aperture 700 can be implemented.

[0059] The plurality of coils 210 can include a first coil 211, a second coil 212, a third coil 213, and a fourth coil 214.

[0060] The first coil 211 can be a coil block in which a conductive wire is wound or a pattern coil formed on a plate. The first coil 211 can be disposed on the first connection part 201 of the first housing 200. The first coil 211 can be disposed on the first plate 221. The first coil 211 can be disposed to correspond to (face, overlap) the first magnet 610 in the "second direction". The first coil 211 can electromagnetically interact with the first magnet 610.

[0061] The second coil (212) can be a coil block in which a conductive wire is wound or a pattern coil formed on a plate. The second coil (212) can be disposed on the second connection portion (202) of the first housing (200). The second coil (212) can be disposed on the second plate (222). The second coil (212) can be disposed to correspond to (face, overlap) the second magnet (620) in the "first direction". The second coil (212) can electromagnetically interact with the second magnet (620).

[0062] The third coil (213) can be a coil block in which a conductive wire is wound or a pattern coil formed on a plate. The third coil (213) can be disposed on the third connection portion (203) of the first housing (200). The third coil (213) can be disposed on the third plate (223). The third coil (213) can be disposed to correspond to (face, overlap) the third magnet (630) in the "second direction". The third coil (213) can electromagnetically interact with the third magnet (630).

[0063] The fourth coil (214) can be a coil block in which a conductive wire is wound or a pattern coil formed on a plate. The fourth coil (214) can be disposed on the fourth connection portion (204) of the first housing (200). The fourth coil (214) can be disposed on the fourth plate (224). The fourth coil (214) can be disposed to correspond to (face, overlap) the fourth magnet (640) in the "first direction". The fourth coil (214) can electromagnetically interact with the fourth magnet (640).

[0064] The first coil (211) and the third coil (213) can face each other across the first magnet (610) and the third magnet (630). The second coil (212) and the fourth coil (214) can face each other across the second magnet (620) and the fourth magnet (640).

[0065] The first coil (211), the second coil (212), the third coil (213), and the fourth coil (214) can be similarly disposed to be disposed along each side of a square. 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).

[0066] The above-described arrangement can be an arrangement in which each of the plurality of coils (210) advantageously electromagnetically interacts with a facing magnet of the plurality of magnets (600), and at the same time can be an arrangement that minimally reduces electromagnetic interference between adjacent magnets (600) and adjacent coils (210). Accordingly, the camera module (1000) according to the exemplary embodiment can perform an accurate auto-focusing function, OIS, and driving of the aperture (700).

[0067] The plate (220) can be disposed on the first housing (200). The plate (220) can be provided with the coil (210), the magnetic sensor (230), and the yoke (240). The plate (220) can be electrically connected to the coil (210) and can supply power to the coil (210). The plate (220) can be electrically connected to the magnetic sensor (230) and can receive a detection signal of the magnetic sensor (230). The plate (220) can be electrically connected to the main board (900) to receive power and various control signals from the main board (900) and to deliver the detection signal of the magnetic sensor (230).

[0068] The plate (220) can include a first plate (221), a second plate (222), a third plate (223), a fourth plate (224), a first connection plate (225), a second connection plate (226), a third connection plate (227), and a fourth connection plate (228).

[0069] The first plate (221) can be a PCB (Printed Circuit Board). The first plate (221) can be disposed on the first connection portion (201) of the housing (200). An inner surface of the first plate (221) can be provided with the first coil (211) and the first magnetic sensor (231). An outer surface of the first plate (221) can be provided with the first yoke (241).

[0070] The second plate (222) can be a PCB (Printed Circuit Board). The second plate (222) can be disposed on the second connection portion (202) of the housing (200). An inner surface of the second plate (222) can be provided with the second coil (212) and the second magnetic sensor (232). An outer surface of the second plate (222) can be provided with the second yoke (242).

[0071] The third plate (223) can be a PCB (Printed Circuit Board). The third plate (223) can be disposed on the third connection portion (203) of the housing (200). An inner surface of the third plate (223) can be provided with the third coil (213) and the third magnetic sensor (233). An outer surface of the third plate (223) can be provided with the third yoke (243).

[0072] The fourth plate (224) can be a PCB (Printed Circuit Board). The fourth plate (224) can be disposed on the fourth connecting portion (204) of the housing (200). An inner surface of the fourth plate (224) can be provided with the fourth coil (214) and the fourth magnetic sensor (234). An outer surface of the fourth plate (224) can be provided with the fourth yoke (244).

[0073] The first connecting plate (225) can be an FPCB (Flexible Printed Circuit Board). The first connecting plate (225) can electrically connect the first plate (221) and the second plate (222). In a variant (not shown), the first connecting plate (225) can be changed to various conductive wires (e.g., wiring).

[0074] The second connecting plate (226) can be an FPCB (Flexible Printed Circuit Board). The second connecting plate (226) can electrically connect the second plate (222) and the third plate (223). In a variant (not shown), the second connecting plate (226) can be changed to various conductive wires (e.g., wiring).

[0075] The third connecting plate (227) can be an FPCB (Flexible Printed Circuit Board). The third connecting plate (227) can electrically connect the third plate (223) and the fourth plate (224). In a variant (not shown), the third connecting plate (227) can be changed to various conductive wires (e.g., wiring).

[0076] The fourth connecting plate (228) can be an FPCB (Flexible Printed Circuit Board). The fourth connecting plate (228) can electrically connect the fourth plate (224) and the first plate (221). In a variant (not shown), the fourth connecting plate (228) can be changed to various conductive wires (e.g., wiring).

[0077] The magnetic sensor (230) can be more than one. The magnetic sensor (230) can be disposed on the plate (220). The magnetic sensor (230) can be electrically connected to the plate (220). The magnetic sensor (230) can be disposed to correspond to (face, overlap) the magnet (600). The magnetic sensor (230) can be disposed to correspond to (face, overlap) the magnet (600) in the "first direction" and the "second direction".

[0078] The one or more magnetic sensors (230) can detect at least one magnetic force of the plurality of magnets (600). The magnetic sensor (230) can detect the magnetic force of the magnet (600) and output a detection signal. The main board (900) can process the magnetic signal of the magnetic sensor (230) and recognize the position of the magnet (600), and can perform a precise auto focus function, OIS, and driving (feedback control) of the aperture (700) based on the above processing and recognition.

[0079] The 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).

[0080] The first magnetic sensor (231) can be a "Hall sensor". The first magnetic sensor (231) can be disposed on the first connecting portion (201) of the first housing (200). The first magnetic sensor (231) can be spaced apart from the first coil (211) and can be disposed on the first plate (221). The first magnetic sensor (231) can correspond to (face, overlap) the first magnet (610) in the "second direction". The first magnetic sensor (231) can detect a magnetic force of the first magnet (610) and can output a first detection signal in response thereto.

[0081] The second magnetic sensor (232) can be a "Hall sensor". The second magnetic sensor (232) can be disposed on the second connecting portion (202) of the first housing (200). The second magnetic sensor (232) can be spaced apart from the second coil (212) and can be disposed on the second plate (222). The second magnetic sensor (232) can correspond to (face, overlap) the second magnet (620) in the "first direction". The second magnetic sensor (232) can detect a magnetic force of the second magnet (620) and can output a second detection signal in response thereto.

[0082] The third magnetic sensor (233) can be a "Hall sensor". The third magnetic sensor (233) can be disposed on the third connecting portion (203) of the first housing (200). The third magnetic sensor (233) can be spaced apart from the third coil (213) and can be disposed on the third plate (223). The third magnetic sensor (233) can correspond to (face, overlap) the third magnet (630) in the "second direction". The third magnetic sensor (233) can detect a magnetic force of the third magnet (630) and can output a third detection signal in response thereto.

[0083] The fourth magnetic sensor (234) can be a "Hall sensor". The fourth magnetic sensor (234) can be disposed on the fourth connecting portion (204) of the first housing (200). The fourth magnetic sensor (234) can be spaced apart from the fourth coil (214) and can be disposed on the fourth plate (224). The fourth magnetic sensor (234) can correspond to (face, overlap) the fourth magnet (640) in the "first direction". The fourth magnetic sensor (234) can detect a magnetic force of the fourth magnet (640) and can output a fourth detection signal in response thereto.

[0084] The yoke (240) can be formed in plural. The yoke (240) can be disposed on the plate (220). The yoke (240) can be disposed to correspond (face, overlap) to the coil (210) and the magnet (600). Each of the plurality of yokes (240) can correspond (face, overlap) to each of the plurality of coils (210) and each of the plurality of magnets (600) in the "first direction" and the "second direction". The yoke (240) can concentrate or gather the electromagnetic force of the coil (210) and the magnetic force of the magnet (600) to enable smooth execution of electromagnetic interaction between the coil (210) and the magnet.

[0085] The plurality of yokes (240) can include a first yoke (241), a second yoke (242), a third yoke (243), and a fourth yoke (244).

[0086] The first yoke (241) can be a plated magnetic substance. The first yoke (241) can be disposed on the first connecting portion (201) of the first housing (200). The first yoke (241) can be disposed on the first plate (221). The first yoke (241) can correspond (face, overlap) to the first coil (211) and the first magnet (610) in the "second direction". The first yoke (241) can concentrate or gather the electromagnetic force of the first coil (211) and the magnetic force of the first magnet (610).

[0087] The second yoke (242) can be a plated magnetic substance. The second yoke (242) can be disposed on the second connecting portion (202) of the first housing (200). The second yoke (242) can be disposed on the second plate (222). The second yoke (242) can correspond (face, overlap) to the second coil (212) and the second magnet (620) in the "first direction". The second yoke (242) can concentrate or gather the electromagnetic force of the second coil (212) and the magnetic force of the second magnet (620).

[0088] The third yoke (243) can be a plated magnetic substance. The third yoke (243) can be disposed on the third connecting portion (203) of the first housing (200). The third yoke (243) can be disposed on the third plate (223). The third yoke (243) can correspond (face, overlap) to the third coil (213) and the third magnet (630) in the "second direction". The third yoke (243) can concentrate or gather the electromagnetic force of the third coil (213) and the magnetic force of the third magnet (630).

[0089] The fourth yoke (244) can be a plated magnetic substance. The fourth yoke (244) can be disposed on the fourth connecting portion (204) of the first housing (200). The fourth yoke (244) can be disposed on the fourth plate (224). The fourth yoke (244) can correspond to (face, overlap) the fourth coil (214) and the fourth magnet (640) in the "first direction". The fourth yoke (244) can concentrate or gather the electromagnetic force of the fourth coil (214) and the magnetic force of the fourth magnet (640).

[0090] The second housing (300) can be disposed at the inside of the first housing (200). The inside of the second housing (300) can be provided with the coil holder (400), the lens module (410), the moving member (500), the second ball bearing (510), the third ball bearing (520), the magnet (600), and the aperture (700). The second housing (300) can be provided with the base (800) and the plate (900) below thereof.

[0091] The second housing (300) can be in a square plate shape, and can be formed with a lower plate in which a hole aligned with an optical axis is formed at the center, and four side plates extending upward from each side of the lower plate. The second housing (300) can be formed of the lower plate of the second housing (300) having a hole aligned with an optical axis at a lower surface and the side plates of the second housing (300), and can form an inside space with an upper surface open. Light that has passed through the lens module (410) can pass through the hole of the lower plate at the second housing (300).

[0092] A plurality of first ball bearings (310) can be disposed between the second housing (300) and the first housing (200). The second housing (300) can move along the "optical axis direction" by the first ball bearings (310). That is, the second housing (300) can be movably connected with the first housing (200) along the "optical axis direction".

[0093] The second housing (300) can be provided with the first magnet (610). The side plate of the second housing (300) disposed to correspond to (face, overlap) the first connecting portion (201) in the "second direction" can be provided with the first magnet (610). When power is applied to the first coil (211) to allow the first coil (211) and the first magnet (610) to electromagnetically interact with each other, a driving force for moving the second housing (300) in the "optical axis direction" can be generated.

[0094] When the second housing (300) moves in the "optical axis direction", the lens module (410) can move in the "optical axis direction" along with the second housing (300). AF (auto focus) function can be achieved by this process.

[0095] The second housing (300) can include a plastic material. The second housing (300) can be plastic injection molded. However, the material of the second housing (300) is not limited thereto.

[0096] The coil holder (400) can be disposed at the inside of the second housing (300). The inside of the coil holder (400) can be provided with the lens module (410). The aperture (700) can be disposed at the inside or above the coil holder (400). The coil holder (400) can be provided with the moving member (500), the second ball bearing (510), and the third ball bearing (520) below thereof.

[0097] The coil holder (400) can have a hollow shape formed with a hole aligned with the optical axis. Light that has passed through the hole at the upper plate of the cover (100) can pass through the hole of the coil holder (400).

[0098] The plurality of second ball bearings (510) can be interposed between the coil holder (400) and the moving member (500). The coil holder (400) can be moved in the "first direction" by the second ball bearings (510), or can be tilted in the "first direction". That is, the coil holder (400) can be connected to the moving member (500) to allow movement in the "first direction" or tilting in the "first direction".

[0099] The coil holder (400) can be provided with the second magnet (620) and the third magnet (630). The side surface of the coil holder (400) disposed in correspondence with (facing, overlapping) the second connection portion (202) of the housing (200) in the "first direction" can be provided with the second magnet (620). The side surface of the coil holder (400) disposed in correspondence with (facing, overlapping) the third connection portion (203) of the housing (200) in the "second direction" can be provided with the third magnet (630).

[0100] When power is applied to the second coil (212) to allow the second coil (212) and the second magnet (620) to electromagnetically interact, a driving force that moves the coil holder (400) in the "first direction" or tilts the coil holder (400) in the "first direction" can be generated.

[0101] When power is applied to the third coil (213) to allow the third coil (213) and the third magnet (630) to electromagnetically interact, a driving force that moves the coil holder (400) in the "second direction" or tilts the coil holder (400) in the "second direction" can be generated.

[0102] When the coil holder 400 moves or tilts in the "first direction", the lens module 410 can move or tilt in the "first direction" along with the coil holder 400. Through this process, an OIS function (OIS(x)) based on the "first direction (x-axis)" can be implemented.

[0103] When the coil holder 400 moves or tilts in the "second direction", the lens module 410 can move or tilt in the "second direction" along with the coil holder 400. Through this process, an OIS function (OIS(y)) based on the "second direction (y-axis)" can be implemented.

[0104] The coil holder 400 can include a plastic material. The coil holder 400 can be plastic injection-molded. However, the material of the coil holder 400 is not limited thereto.

[0105] The lens module 410 can be disposed at the inside of the coil holder 400. The lens module 410 can include a plurality of lenses and a lens barrel. However, one element of the lens module 410 is not limited to the lens barrel, and any holder structure capable of supporting one or more lenses can be sufficient. Light that has passed through the lens module can be irradiated on the image sensor 910.

[0106] The moving member 500 can be disposed below the coil holder 400. The moving member 500 can be disposed above the lower plate of the second housing. The moving member 500 can be interposed between the second housing 300 and the coil holder 400.

[0107] The moving member 500 can have a square plate shape in which a hole aligned with the optical axis is formed at the center. Light that has passed through the hole of the coil holder 400 can pass through the hole of the moving member 500.

[0108] The moving member 500 can include a plastic material. The moving member 500 can be plastic injection-molded. However, the material of the moving member 500 is not limited thereto.

[0109] A plurality of second ball bearings 510 can be interposed between the moving member 500 and the coil holder 400. The coil holder 400 can move or tilt in the "first direction" by the second ball bearings 510. That is, the coil holder 400 can be movably or tiltably connected with the moving member 500 in the "first direction".

[0110] A plurality of third ball bearings (520) may be interposed between the movable member (500) and the second housing (300). The movable member (500) may be moved or tilted in the "second direction" by the third ball bearings (520). In other words, the movable member (500) may be movably or tiltably connected to the second housing (300) in the "second direction". The coil bobbin (400) may be moved or tilted in the "second direction" by the movable member (500).

[0111] The magnet (600) may be formed in a plurality. Each of the plurality of magnets (600) may be distributed and arranged on the second housing (300), the coil frame (400), and the aperture (700). Each of the plurality of magnets (600) may be arranged corresponding to (facing, overlapping) each of the plurality of coils (210) in the "first direction" or in the "second direction."

[0112] The magnet (600) can electromagnetically interact with the coil (210) to provide a driving force to the second shell (300) and the coil frame (400). The second shell (300) can move along the "optical axis direction" through the electromagnetic interaction between the magnet (600) and the coil (210) to perform the AF function. The coil frame (400) can move or tilt along the "first direction (x-axis)" through the electromagnetic interaction between the magnet (600) and the coil (210) to perform the OIS function based on the "first direction (x-axis)". The coil frame (400) can move or tilt along the "second direction (y-axis)" through the electromagnetic interaction between the magnet (600) and the coil (210) to perform the OIS function (OIS(y)) based on the "second direction (y-axis)".

[0113] The plurality of magnets (600) may include a first magnet (610), a second magnet (620), a third magnet (630), and a fourth magnet (600).

[0114] The first magnet (610) and the third magnet (630) may be symmetrically arranged about the optical axis. The first magnet (610) and the third magnet (630) may be arranged in parallel about the first direction. The first magnet (610) and the third magnet (630) may be arranged correspondingly (facing, overlapping) on ​​each other's inner surfaces in the second direction.

[0115] The second magnet 620 and the fourth magnet 640 can be spaced apart from the first magnet 610 and the third magnet 630. The second magnet 620 and the fourth magnet 640 can be symmetrically disposed about the "optical axis". The second magnet 620 and the fourth magnet 640 can be disposed in parallel about the "second direction". The second magnet 620 and the fourth magnet 640 can be correspondingly (facingly, overlappingly) disposed at inner surfaces of each other in the "first direction".

[0116] The first magnet 610 can be correspondingly (facingly, overlappingly) disposed with the first coil 211 in the "second direction". The first magnet 610 can be in the shape of a plate magnet disposed correspondingly (facingly, overlappingly) with an inner surface of the first coil 211 in the "second direction" at an outer surface. The first magnet 610 can electromagnetically interact with the first coil 211 to perform an AF (auto focus) function. The first magnet 610 can be formed on a side plate disposed correspondingly (facingly, overlappingly) with the first connecting portion 201 in the "second direction" in a side plate of the second housing 300.

[0117] The second magnet 620 can be correspondingly (facingly, overlappingly) disposed with the second coil 212 in the "first direction". The second magnet 620 can be in the shape of a plate magnet disposed correspondingly (facingly, overlappingly) with an inner surface of the first coil 211 in the "first direction" at an outer surface. The second magnet 620 can electromagnetically interact with the second coil 212 to perform OIS based on the "first direction (x-axis)" (OIS(x)). The second magnet 620 can be disposed at a side surface of the coil holder 400 disposed correspondingly (facingly, overlappingly) with the second connecting portion 202 in the "first direction".

[0118] The third magnet 630 can be correspondingly (facingly, overlappingly) disposed with the third coil 213 in the "second direction". The third magnet 630 can be a plate magnet disposed correspondingly (facingly, overlappingly) with an inner side surface of the third coil 213 in the "second direction" at an outer surface. The third magnet 630 can electromagnetically interact with the third coil 213 to perform OIS based on the "second direction" (OIS(y)). The third magnet 630 can be formed on a side surface of the coil holder 400 disposed correspondingly (facingly, overlappingly) with the third connecting portion 203 in the "second direction".

[0119] The fourth magnet (640) can be disposed in correspondence with (facing, overlapping) the fourth coil (214) in a "first direction". The fourth magnet (640) can be a plate magnet disposed in correspondence with (facing, overlapping) the inner side surface of the fourth coil (214) in a "second direction" at the outer surface. The fourth magnet (640) can perform driving of the aperture (700) by electromagnetically interacting with the fourth coil (214).

[0120] The aperture (700) can be disposed on or at the coil holder (400). When the aperture (700) is disposed at the coil holder (400) (not shown), the aperture (700) can be disposed between the plurality of lenses of the lens module (410). The aperture (700) can be provided with the fourth magnet (640).

[0121] The aperture (700) can include a stator (710) including a first guide (711) and a second guide (712), a mover (720) disposed on the stator (710) and provided with the fourth magnet (640), a connecting rod (730) rotatably connected to one side of the mover (720), 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 vane (750) disposed at one side of the rotor (740), and a second vane (760) disposed at the other side of the rotor (740).

[0122] The mover (720) can move in a "first direction" in response to electromagnetic interaction between the fourth coil (214) and the fourth magnet (640). To facilitate the movement of the mover (720), a plurality of fourth ball bearings (not shown) can be interposed between the stator (710) and the mover (720).

[0123] The driving force can be transmitted to the rotor (740) through the connecting rod (730) by the movement of the mover (720) in the "first direction". The rotor (740) can rotate in a forward direction or in a backward direction, and the first vane (750) and the second vane (760) can move in a "second direction" by the rotation of the rotor (740).

[0124] The first vane (750) can include a first connecting rod (751) rotatably connected to one side of the rotor (740) on one side and moving along the first guide (711), and a first blocking plate (752) disposed at the other side of the first connecting rod (751) and formed with a first groove (752-1).

[0125] The second vane (760) can include a second connecting bar (761) rotatably connected to the other side of the rotor (740) on one side and moving along the second guide (712), and a second blocking plate (762) disposed on the other side of the second connecting bar (761) and formed with a second slot (762-1).

[0126] At least a portion of the first slot (752-1) and the second slot (762-1) can overlap in the optical axis direction, and the first slot (752-1) and the second slot (762-1) can form a hole (770). The area of the hole (770) formed by the first slot (752-1) and the second slot (762-1) can be adjusted by moving the first vane (750) and the second vane (760) in the "second direction". That is, the area of the hole (770) formed by the first slot (752-1) and the second slot (762-1) can be adjusted by the electromagnetic interaction between the fourth coil (214) and the fourth magnet (640).

[0127] The aperture (700) can adjust the amount of light irradiated on the image sensor (910).

[0128] The base (800) can be disposed on the main board (900). The base (800) can be disposed below the first housing (200), the second housing (300), the coil holder (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 coil holder (400), and the moving member (500).

[0129] The base (800) can have a square plate shape in which a hole is formed in the center in the optical axis direction. Light that has passed through the hole (770) of the aperture (700) and the lens module (410) can pass through the hole of the base (800). Light that has passed through the hole of the base (800) can be irradiated on the image sensor (910).

[0130] The main board (900) can be a PCB (printed circuit board). The main board (900) can be disposed below the cover (100), the first housing (200), the coil (210), the plate (220), the magnetic sensor (230), the yoke (240), the second housing (300), the first ball bearing (310), the coil holder (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). The main board (900) can be provided with the image sensor (910) by being aligned with the optical axis. The main board (900) can be mounted with the image sensor (910). For example, the inner upper surface of the main board (900) can be provided with the image sensor (910), and the outer upper surface of the main board (900) can be provided with the cover (100) and the base (800). Through this structure, light that has passed through the lens module (410), the aperture (770) of the aperture, and the hole of the base (800) can be irradiated on the image sensor. The main board (900) can supply power (for example, supply power to the coil) to the camera module (1000). The main board (900) can be mounted with a controller to control the camera module (1000).

[0131] The image sensor (910) can output the irradiated light as an image signal. The image signal output by the image sensor can be delivered to the display part (display panel) of the optical device through the main board (900). The image sensor (910) can be a CCD (charge-coupled device), a MOS (metal-oxide-semiconductor), a CPD, and a CID. However, the kind of the image sensor (910) is not limited thereto.

[0132] The IR cut filter can cut light in the infrared region to prevent it from being incident on the image sensor (910). The IR cut filter can be, for example, interposed between the lens module (410) and the image sensor (910). The IR cut filter can be disposed on a holder member (not shown) separately formed away from the base (800). However, the IR cut filter can be mounted on a hole formed at the central portion of the base (800). The IR cut filter can be formed, for example, of a film material or a glass material. The IR cut filter can be formed, for example, by coating an IR cut coating material on a plate-shaped optical filter, such as a cover glass and a cover glass for protecting the surface of an image pickup device.

[0133] The controller can be mounted on the main board (900). However, the location of the controller is not limited thereto. The controller can be disposed at the outside of the camera module (1000). The controller can control the direction, intensity, and magnitude of the current supplied to each element forming the camera module (1000). The controller can control the camera module (1000) to perform an AF function, an OIS function, and driving of the aperture (700).

[0134] Although the present disclosure has been described using all the constituent elements combined or operated in one embodiment forming an exemplary embodiment of the present disclosure, the present disclosure is not limited thereto. That is, as long as within the scope of the object of the present invention, all elements can be operated by allowing one or more elements to be selectively combined. Also, the terms such as "include", "have", and / or "comprise" used herein mean that the mentioned elements are embedded unless otherwise stated, such that the mentioned elements are not excluded but can be additionally included. Unless otherwise defined, all terms used herein including technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. It will also be understood that the terms such as those defined in a generally used dictionary should be interpreted as having meanings consistent with the meanings in the context of the relevant art and the present disclosure, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0135] The above description is merely intended to illustrate the technical idea of the present invention, and thus, those skilled in the art should understand that various modifications and changes can be made to the above examples without departing from the scope of the present invention. The exemplary embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the present invention, and thus, the technical idea of the present invention is not limited by the exemplary embodiments. The scope of the present invention should be interpreted by the appended claims, and all technical ideas within the equivalent scope should be interpreted as included in the scope of the right of the present invention.

[0136] The present technology can also employ the following configurations.

[0137] (1) A lens driving device comprising:

[0138] a first housing;

[0139] a second housing disposed in the first housing;

[0140] a coil holder disposed in the second housing;

[0141] an aperture disposed on the coil holder;

[0142] a plate disposed on the first housing;

[0143] a first coil to a fourth coil disposed on the board;

[0144] a first magnet disposed on the second housing and facing the first coil;

[0145] a second magnet disposed on the coil holder and facing the second coil;

[0146] a third magnet disposed on the coil holder and facing the third coil; and

[0147] a fourth magnet disposed on the diaphragm and facing the fourth coil,

[0148] wherein the first coil to the fourth coil are spaced apart from each other, the first coil and the third coil are disposed to face each other, and the second coil and the fourth coil are disposed to face each other,

[0149] wherein the second housing is configured to move in an optical axis direction by the first magnet and the first coil,

[0150] wherein the coil holder is configured to move in a first direction perpendicular to the optical axis direction by the second magnet and the second coil,

[0151] wherein the coil holder is configured to move in a second direction perpendicular to both the optical axis direction and the first direction by the third magnet and the third coil,

[0152] wherein the diaphragm includes a first leaf and a second leaf, and

[0153] wherein an area of a hole defined by the first leaf and the second leaf is configured to be adjusted by the fourth magnet and the fourth coil.

[0154] (2) The lens driving device according to (1), wherein the first coil and the third coil are disposed to face each other based on an optical axis.

[0155] (3) The lens driving device according to (2), wherein the second coil and the fourth coil are disposed to face each other based on the optical axis.

[0156] (4) The lens driving device according to (1), wherein the first coil, the first magnet, the third magnet, and the third coil overlap.

[0157] (5) The lens driving device according to (4), wherein the second coil, the second magnet, the fourth magnet, and the fourth coil overlap.

[0158] (6) The lens driving device according to (1), wherein the plates include first to fourth plates and a connection plate connecting the first to fourth plates,

[0159] wherein the first coil is provided on the first plate,

[0160] wherein the second coil is provided on the second plate,

[0161] wherein the third coil is provided on the third plate, and

[0162] wherein the fourth coil is provided on the fourth plate.

[0163] (7) The lens driving device according to (4), wherein the plates include first to fourth plates, wherein the lens driving device includes:

[0164] a first sensor provided on the first plate and sensing the first magnet;

[0165] a second sensor provided on the second plate and sensing the second magnet;

[0166] a third sensor provided on the third plate and sensing the third magnet; and

[0167] a fourth sensor provided on the fourth plate and sensing the fourth magnet.

[0168] (8) The lens driving device according to (1), wherein the first housing includes:

[0169] a first corner, a second corner, a third corner, and a fourth corner which are mutually spaced apart from each other;

[0170] a first connecting portion connecting the first corner and the second corner;

[0171] a second connecting portion connecting the second corner and the third corner;

[0172] a third connecting portion connecting the third corner and the fourth corner; and

[0173] a fourth connecting portion connecting the fourth corner and the first corner,

[0174] wherein the first coil is provided on the first connecting portion, the second coil is provided on the second connecting portion, the third coil is provided on the third connecting portion, and the fourth coil is provided on the fourth connecting portion.

[0175] (9) The lens driving device according to (8), wherein the first to fourth coils are provided on an inner side surface of the plate.

[0176] (10) The lens driving apparatus according to (9), wherein the plate is provided on the first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion.

[0177] (11) The lens driving apparatus according to (1), wherein the aperture is configured to adjust an amount of light passing through the aperture by the fourth magnet and the fourth coil.

[0178] (12) The lens driving apparatus according to (1), wherein the aperture includes: a stator including a first guide and a second guide; a mover provided on the stator and provided with the fourth magnet; a connecting rod rotatably connected to the mover at one side; and a rotor rotatably connected to the other side of the connecting rod and rotatably connected to the stator at the center,

[0179] wherein the first vane is provided at one side of the rotor, and

[0180] wherein the second vane is provided at the other side of the rotor.

[0181] (13) The lens driving apparatus according to (12), wherein the first vane includes: a first connecting rod rotatably connected to one side of the rotor at one side and moving along the first guide; and a first blocking plate provided at the other side of the first connecting rod and formed with a first slot,

[0182] wherein the second vane includes: a second connecting rod rotatably connected to the other side of the rotor at one side and moving along the second guide; and a second blocking plate provided at the other side of the second connecting rod and formed with a second slot, and

[0183] wherein at least a portion of the second slot and the first slot overlap in an optical axis direction.

[0184] (14) The lens driving apparatus according to (13), wherein an aperture defined by the first vane and the second vane is an aperture formed by the first slot and the second slot.

[0185] (15) The lens driving apparatus according to (1), comprising one or more first ball bearings provided between the first housing and the second housing.

[0186] (16) The lens driving apparatus according to (1), comprising:

[0187] a moving member provided between the second housing and the coil holder;

[0188] one or more second ball bearings disposed between the moving member and the coil holder; and

[0189] one or more third ball bearings disposed between the second housing and the moving member.

[0190] (17) A lens driving device comprising:

[0191] a first housing;

[0192] a second housing disposed in the first housing;

[0193] a coil holder disposed in the second housing;

[0194] an iris disposed on the coil holder;

[0195] a plate disposed on the first housing;

[0196] first to fourth coils disposed on the plate;

[0197] a first magnet disposed on the second housing and facing the first coil;

[0198] a second magnet disposed on the coil holder and facing the second coil;

[0199] a third magnet disposed on the coil holder and facing the third coil; and

[0200] a fourth magnet disposed on the iris and facing the fourth coil,

[0201] wherein the first to fourth coils are spaced apart from each other, the first and third coils are disposed opposite to each other, and the second and fourth coils are disposed opposite to each other,

[0202] wherein the second housing is configured to move in an optical axis direction by the first magnet and the first coil,

[0203] wherein the coil holder is configured to move in a first direction perpendicular to the optical axis direction by the second magnet and the second coil,

[0204] wherein the coil holder is configured to move in a second direction perpendicular to both the optical axis direction and the first direction by the third magnet and the third coil,

[0205] wherein the iris includes a first vane including a first slot and a second vane including a second slot, and

[0206] wherein an area of a hole formed by the first slot and the second slot is configured to be adjusted by the fourth magnet and the fourth coil.

[0207] (18) The lens driving device according to (17), wherein the first coil and the third coil are disposed opposite to each other based on an optical axis, and

[0208] wherein the second coil and the fourth coil are disposed opposite to each other based on the optical axis.

[0209] (19) A camera module comprising:

[0210] a printed circuit board (PCB);

[0211] an image sensor disposed on the printed circuit board;

[0212] the lens driving device according to any one of (1) to (18) disposed above the printed circuit board; and

[0213] a lens coupled to the coil holder of the lens driving device.

[0214] (20) An optical device comprising:

[0215] a frame;

[0216] a display disposed on one surface of the frame; and

[0217] the camera module according to (19) disposed on the frame and electrically connected with the display.

Claims

1. A lens driving apparatus comprising: a first housing; a coil holder disposed in the first housing; a second housing disposed between the first housing and the coil holder; a first vane and a second vane disposed on the coil holder; a plate disposed on the first housing; a fourth coil disposed on the plate; a second magnet disposed on the coil holder; a second coil facing the second magnet; a fourth magnet configured to adjust an area of a hole defined by the first vane and the second vane by electromagnetically interacting with the fourth coil, wherein a shortest distance between an optical axis and the fourth magnet is less than a shortest distance between the optical axis and the second magnet.

2. The lens driving apparatus according to claim 1, wherein The fourth coil overlaps the second coil in a first direction perpendicular to an optical axis direction. 3.The lens driving apparatus of claim 1, comprising a cover disposed on the first housing, wherein the cover including an upper plate and a plurality of side plates, wherein the plurality of side plates of the cover include a first side plate and a third side plate facing each other, and a second side plate and a fourth side plate facing each other, and wherein the fourth coil is disposed between the fourth magnet and the fourth side plate of the cover.

4. The lens driving apparatus according to claim 3, wherein The second coil is disposed between the second magnet and the second side plate of the cover.

5. The lens driving apparatus according to claim 2, wherein The second coil, the second magnet, the fourth magnet, and the fourth coil overlap each other in the first direction.

6. The lens driving apparatus according to claim 2, wherein An outer side surface of the second magnet facing the second coil has a length in a second direction perpendicular to each of the first direction and the optical axis direction that is greater than a length of an outer side surface of the fourth magnet facing the fourth coil in the second direction. 7.The lens driving apparatus of claim 6, comprising a fourth sensor configured to sense the fourth magnet, wherein the fourth sensor being disposed in the fourth coil. 8.The lens driving apparatus of claim 7, comprising a second sensor disposed on the plate and configured to sense the second magnet.

9. The lens driving apparatus according to claim 8, wherein The fourth sensor overlaps the second sensor in the first direction. 10.The lens driving apparatus of claim 1, comprising: a first coil and a third coil disposed on the plate; a first magnet disposed on the second housing and facing the first coil; and a third magnet disposed on the coil holder and facing the third coil. The first coil to the fourth coil are spaced apart from each other, the first coil and the third coil are disposed to face each other, and the second coil and the fourth coil are disposed to face each other, 11. The lens driving apparatus according to claim 10, wherein wherein the second housing is configured to move in an optical axis direction by the first magnet and the first coil, wherein the coil holder is configured to move in a first direction perpendicular to the optical axis direction by the second magnet and the second coil, and wherein the coil holder is configured to move in a second direction perpendicular to each of the optical axis direction and the first direction by the third magnet and the third coil. ​ 12. The lens driving apparatus according to claim 10, wherein The plate includes first to fourth plates and a connection plate connecting the first to fourth plates, wherein the first coil is disposed on the first plate, wherein the second coil is disposed on the second plate, wherein the third coil is disposed on the third plate, and wherein the fourth coil is disposed on the fourth plate. 13.The lens driving apparatus of claim 10, comprising: a first sensor disposed on the plate and configured to sense the first magnet; and a third sensor disposed on the plate and configured to sense the third magnet.

14. The lens driving apparatus according to claim 10, wherein The first housing includes: first, second, third, and fourth corners spaced apart 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, wherein the first coil is disposed on the first connecting portion, the second coil is disposed on the second connecting portion, the third coil is disposed on the third connecting portion, and the fourth coil is disposed on the fourth connecting portion. 15.The lens driving apparatus according to claim 1, comprising: a stator including first and second guides; a mover disposed on the stator and provided with the fourth magnet; a connecting rod rotatably connected to the mover on one side; and a rotor rotatably connected to the other side of the connecting rod and rotatably connected to the stator at the center, wherein the first vane is disposed on one side of the rotor, and wherein the second vane is disposed on the other side of the rotor.

16. The lens driving apparatus according to claim 15, wherein The first vane includes a first connecting rod rotatably connected to one side of the rotor on one side and moving along the first guide, and a first blocking plate disposed on the other side of the first connecting rod and formed with a first slot, wherein the second vane includes a second connecting rod rotatably connected to the other side of the rotor on one side and moving along the second guide, and a second blocking plate disposed on the other side of the second connecting rod and formed with a second slot, and wherein at least a portion of the second slot and the first slot overlap in an optical axis direction.

17. The lens driving apparatus according to claim 16, wherein The aperture defined by the first vane and the second vane is an aperture formed by the first slot and the second slot. 18.The lens driving apparatus of claim 1, comprising one or more first ball bearings disposed between the first housing and the second housing. 19.The lens driving apparatus of claim 1, comprising: a moving member disposed between the second housing and the coil holder; one or more second ball bearings disposed between the moving member and the coil holder; and one or more third ball bearings disposed between the second housing and the moving member. ​ 20. The lens driving apparatus according to claim 2, wherein A length of an inner side surface of the fourth coil facing the fourth magnet in a second direction perpendicular to each of the first direction and the optical axis direction is smaller than a length of an inner side surface of the second coil facing the second magnet in the second direction.

21. The lens driving apparatus according to claim 2, wherein A length of an inner side surface of the fourth coil facing the fourth magnet in the optical axis direction is greater than a length of an inner side surface of the second coil facing the second magnet in the optical axis direction.

22. The lens driving apparatus according to claim 2, wherein A length of an inner side surface of the fourth coil facing the fourth magnet in a second direction perpendicular to each of the first direction and the optical axis direction is smaller than a length of the inner side surface of the fourth coil in the optical axis direction.

23. A lens driving apparatus comprising: a first housing; a cover disposed on the first housing; a coil holder disposed in the first housing; a second housing disposed between the first housing and the coil holder; a first vane and a second vane disposed on the coil holder; a plate disposed on the first housing; a fourth coil disposed on the plate; a second magnet disposed on the coil holder; a second coil facing the second magnet; a fourth magnet configured to adjust an area of a hole defined by the first vane and the second vane by electromagnetically interacting with the fourth coil, wherein the cover includes an upper plate and a plurality of side plates, wherein the plurality of side plates of the cover includes a first side plate and a third side plate opposite each other, and a second side plate and a fourth side plate opposite each other, wherein the fourth coil is disposed between the fourth magnet and one of the plates of the cover, and wherein a shortest distance between an optical axis and the fourth magnet is smaller than a shortest distance between the optical axis and the second magnet.

24. A camera module comprising: a printed circuit board; an image sensor disposed on the printed circuit board; the lens driving apparatus according to any one of claims 1 to 23 disposed above the printed circuit board; and a lens coupled to the coil holder of the lens driving apparatus.

25. An optical device comprising: a frame; a display disposed on one surface of the frame; and the camera module according to claim 24 disposed on the frame and electrically connected with the display. ​ ​

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