Lens drive device, camera device, and optical device

Abstract

This embodiment relates to a lens driving device including a base, a housing arranged on the base, a guide frame arranged in the housing, a bobbin arranged in the guide frame, a first ball arranged between the base and the housing, a second ball arranged between one side of the guide frame and a side of the housing, and a third ball arranged between a side of the bobbin and the other side of the guide frame.

Description

[Technical Field]

[0001] The present embodiment relates to a lens driving device, a camera device, and an optical device. [Background technology]

[0002] A camera device is a device that takes a photograph or video of a subject, and is attached to optical devices such as smartphones, drones, vehicles, etc.

[0003] The camera device is equipped with an autofocus function that automatically adjusts the focus depending on the distance to the subject, and an image stabilization function that prevents the focus from being shaken by the user's hand.

[0004] The autofocus and image stabilization functions may be achieved by electromagnetic interaction between the magnet and the coil.

[0005] However, in conventional lens driving devices, the magnet and coil for performing the autofocus function are arranged in a moving part, and the coil is arranged in a fixed part, since the magnet, which does not require electrical connection, is arranged in the moving part. In this case, the magnet, which is heavier than the coil, is arranged in the moving part, which causes a problem of large current consumption when performing the autofocus function.

[0006] In particular, in recent years, the problem has become more serious as the lens diameter has increased due to the increase in the number of pixels in image sensors, and the weight of the lens has also increased accordingly.

[0007] Furthermore, in order to arrange components such as magnets and coils for performing the autofocus and image stabilization functions, a size larger than the thickness of the smartphone is required in the optical axis direction, which poses a problem that the camera device attached to the smartphone protrudes from other parts of the smartphone. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Korean Patent Publication No. 10-2015-0118005 Summary of the Invention [Problem to be solved by the invention]

[0009] This embodiment aims to provide a lens driving device that reduces current consumption for performing the autofocus function by arranging a coil, which is lighter than a magnet, in the moving part.

[0010] This embodiment also aims to provide a camera device that has an autofocus function and an image stabilization function, while minimizing the size in the optical axis direction. [Means for solving the problem]

[0011] The lens driving device of this embodiment may include a base, a housing arranged on the base, a guide frame arranged in the housing, a bobbin arranged in the guide frame, a first ball arranged between the base and the housing, a second ball arranged between one side of the guide frame and a side of the housing, and a third ball arranged between a side of the bobbin and the other side of the guide frame.

[0012] The lens driving device of this embodiment may include a fixed section, a first moving section arranged on the fixed section, a second moving section arranged within the first moving section and including a bobbin and a guide frame, a first driving section that moves the first moving section in the optical axis direction, a second driving section that moves the second moving section in a direction perpendicular to the optical axis direction, a first support member arranged between the first moving section and the fixed section, a second support member arranged between the first moving section and a side of the second moving section, and a third support member arranged between a side of the bobbin and a side of the guide frame.

[0013] The lens driving device may include a first driving unit that moves the guide frame in a first direction perpendicular to the optical axis direction, and a second driving unit that moves the bobbin in a second direction perpendicular to the optical axis direction and the first direction.

[0014] The lens driving device of this embodiment may include a fixed section, a first moving section arranged on the fixed section, a second moving section arranged within the first moving section and including a bobbin and a guide frame, a first driving section that moves the first moving section in the optical axis direction, a second driving section that is arranged on the first moving section and the second moving section and moves the second moving section in the x-axis, and a third driving section that moves the bobbin in the y-axis.

[0015] The first moving portion may bring the bobbin into close contact with the guide frame.

[0016] The first moving portion may include a yoke that brings the bobbin into close contact with the guide frame.

[0017] The first moving portion may include a first yoke that brings the first moving portion into close contact with the fixed portion, and a second yoke that brings the guide frame into close contact with the first moving portion.

[0018] The first moving portion may include a third yoke that brings the bobbin into close contact with the guide frame.

[0019] The first moving portion may include a housing, and the first to third yokes may be coupled to the housing.

[0020] The third driving unit may include a first magnet disposed on the bobbin and a first coil interacting with the first magnet, and the first coil may move together with the first moving unit.

[0021] The second driving unit may include a second magnet disposed on the guide frame and a second coil interacting with the second magnet, and the second coil may move together with the first moving unit.

[0022] The first driving unit may include a third magnet disposed on the fixed unit and a third coil that interacts with the third magnet, and the third coil may move together with the first moving unit.

[0023] The lens driving device may include a fourth magnet disposed on the bobbin, and a yoke disposed on the second moving part so as to exert an attractive force on the fourth magnet.

[0024] When the second moving part is moved in the x-axis direction by the second driving part, the spacing between the fourth magnet and the yoke in the x-axis direction may be maintained, and the distance between the first magnet and the first coil in the x-axis direction may vary.

[0025] The fourth magnet may be spaced apart from the first magnet, and the fourth magnet may not face the first coil.

[0026] Each of the first magnet, the second magnet, and the fourth magnet may include a first magnet portion including a north pole and a south pole, a second magnet portion including a south pole and a north pole, and a neutral portion disposed between the first magnet portion and the second magnet portion.

[0027] When viewed from above, the third magnet, the third coil, the first magnet, and the first coil may be arranged in this order on an imaginary first line parallel to the x-axis.

[0028] When viewed from above, the third magnet, the third coil, the fourth magnet, and the yoke may be arranged in this order on an imaginary second line parallel to the x-axis.

[0029] The camera device according to this embodiment may include a printed circuit board, an image sensor disposed on the printed circuit board, a lens driving device disposed on the printed circuit board, and a lens coupled to the lens driving device.

[0030] The optical device according to this embodiment may include a main body, a camera device disposed on the main body, and a display disposed on the main body and configured to output one or more of a video and an image captured by the camera device. [Effects of the Invention]

[0031] According to this embodiment, the coil, which is lighter in weight than the magnet, is disposed in the moving part, so that the current consumption for executing the autofocus function can be reduced.

[0032] Furthermore, the autofocus function and the image stabilization function can be performed in a camera device that is minimized in size in the optical axis direction.

[0033] That is, according to this embodiment, the camera device does not protrude from the smartphone, but can still perform both the autofocus function and the image stabilization function. [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a conceptual diagram of a lens driving device according to an embodiment of the present invention.

[0035] [Figure 2] FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention.

[0036] [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2.

[0037] [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. 2.

[0038] [Figure 5] FIG. 3 is a cross-sectional view taken along CC in FIG. 2.

[0039] [Figure 6]1 is a cross-sectional view of a lens driving device according to an embodiment of the present invention taken along a direction perpendicular to an optical axis and viewed from above.

[0040] [Figure 7] FIG. 2 is an exploded perspective view of the lens driving device according to the embodiment.

[0041] [Figure 8] 8 is an exploded perspective view of the lens driving device according to the present embodiment, seen from a different direction from that in FIG. 7. FIG.

[0042] [Figure 9] FIG. 2 is a perspective view showing a state in which the cover is omitted from the lens driving device according to the embodiment.

[0043] [Figure 10] FIG. 2 is a perspective view showing a fixing portion and related configuration of the lens driving device according to the embodiment.

[0044] [Figure 11] FIG. 2 is a perspective view showing a moving portion and related configuration of the lens driving device according to the embodiment.

[0045] [Figure 12] 12 is a perspective view of a moving part of the lens driving device and related components, seen from a different direction from that in FIG. 11. FIG.

[0046] [Figure 13] 13 is a bottom perspective view of the moving part of the lens driving device and related components, as seen from a direction different from that of FIGS. 11 and 12. FIG.

[0047] [Figure 14] 2 is a perspective view showing an AF moving unit and related configurations of the lens driving device according to the present embodiment. FIG.

[0048] [Figure 15] 15 is a perspective view of an AF moving unit and related components of the lens driving device, as seen from a different direction from that in FIG. 14.

[0049] [Figure 16] 2 is a perspective view showing an OIS moving unit and related configurations of the lens driving device according to the present embodiment. FIG.

[0050] [Figure 17] 17 is a perspective view showing an OIS moving unit and related configuration of the lens driving device, seen from a different direction from that in FIG. 16.

[0051] [Figure 18] FIG. 2 is a perspective view showing an OIS-x moving unit and related configurations of the lens driving device according to the present embodiment.

[0052] [Figure 19] 19 is a perspective view showing the OIS-x moving unit of the lens driving device and related configurations, seen from a direction different from that in FIG. 18.

[0053] [Figure 20] FIG. 2 is a perspective view showing an OIS-y moving unit and related configurations of the lens driving device according to the present embodiment.

[0054] [Figure 21] FIG. 2 is a bottom view showing a drive unit and related components of the lens drive device according to the embodiment.

[0055] [Figure 22] 2 is a cross-sectional view showing an AF guide ball and related components of the lens driving device according to the present embodiment. FIG.

[0056] [Figure 23] FIG. 2 is a side view showing the AF guide ball and related configurations with the base omitted.

[0057] [Figure 24] FIG. 2 is a cross-sectional view showing the AF guide ball and related configurations with the AF carrier omitted.

[0058] [Figure 25] FIG. 2 is a perspective view showing the AF guide ball and related configurations with the AF carrier omitted.

[0059] [Figure 26] FIG. 26 is a perspective view showing the AF guide ball and related configurations in a state where the AF carrier is omitted, as seen from a different direction from that in FIG. 25.

[0060] [Figure 27] FIG. 10 is a cross-sectional view illustrating the state of the moving part in the initial state where no current is applied to the AF coil, for explaining autofocus driving of the lens driving device according to the embodiment. [Figure 28] FIG. 10 is a cross-sectional view illustrating the autofocus drive of the lens drive device according to the present embodiment, showing a state in which a forward current is applied to the AF coil and the moving part moves upward in the optical axis direction. [Figure 29] FIG. 10 is a cross-sectional view illustrating the autofocus drive of the lens drive device according to the present embodiment, showing a state in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction.

[0061] [Figure 30] FIG. 10 is a cross-sectional view illustrating the state of the OIS moving part in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil, for explaining the image stabilization driving of the lens driving device according to the present embodiment. [Figure 31] FIG. 10 is a cross-sectional view illustrating the image stabilization drive of the lens driving device according to the present embodiment, showing a state in which a current is applied to the OIS-x coil and the OIS moving section moves in the x-axis direction perpendicular to the optical axis. [Figure 32] FIG. 10 is a cross-sectional view illustrating the image stabilization drive of the lens driving device according to the present embodiment, showing a state in which a current is applied to the OIS-y coil and the OIS-y moving part moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0062] [Figure 33] FIG. 2 is an exploded perspective view of the camera device according to the embodiment.

[0063] [Figure 34] FIG. 1 is a perspective view of an optical device according to an embodiment of the present invention.

[0064] [Figure 35] FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0065] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0066] However, the technical concept of the present invention is not limited to the described embodiments, but may be embodied in various other forms, and one or more of the components may be selectively combined or substituted between the embodiments within the scope of the technical concept of the present invention.

[0067] Furthermore, unless otherwise clearly defined, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a way that would be generally understood by a person of ordinary skill in the art to which the present invention belongs, and commonly used terms, such as dictionary-defined terms, may be interpreted in light of their meaning in the context of the relevant art.

[0068] Furthermore, the terms used in the embodiments of the present invention are intended to explain the embodiments and are not intended to limit the present invention.

[0069] In this specification, unless otherwise specified in the phrase, the singular form also includes the plural form, and when it says "at least one (or one or more) of A, B, and C," it may include one or more of all combinable combinations of A, B, and C.

[0070] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. are used only to distinguish the component from other components, and the terms do not limit the essence, order, or sequence of the components.

[0071] In addition, when it is described that one component is "coupled," "coupled," or "connected" to another component, this may include not only the case where one component is "coupled," "coupled," or "connected" directly to the other component, but also the case where one component is "coupled," "coupled," or "connected" by yet another component between the one component and the other component.

[0072] Furthermore, when described as being formed or disposed "above (above)" or "below (below)" each component, "above (above)" or "below (below)" includes not only the case where two components are in direct contact with each other, but also the case where one or more other components are formed or disposed between the two components. Furthermore, when described as "above (above)" or "below (below)," it may mean not only the upper direction but also the lower direction based on one component.

[0073] The "optical axis direction (see OA in FIG. 29)" used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0074] The "vertical direction" used below may be a direction parallel to or the same as the optical axis direction. The vertical direction may correspond to the "z-axis direction." The "horizontal direction" used below may be a direction perpendicular to the vertical direction. That is, the horizontal direction may be a direction perpendicular to the optical axis. Therefore, the horizontal direction may include the "x-axis direction" and the "y-axis direction."

[0075] The term "autofocus (AF) function" used below is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens along the optical axis depending on the distance to the subject so that a clear image of the subject can be obtained on the image sensor. Also, "autofocus feedback (CLAF, closed-loop autofocus) control" is defined as sensing the distance between the image sensor and lens and controlling the lens position in real time with feedback to improve the accuracy of focus adjustment.

[0076] The term "optical image stabilization (OIS) function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset camera shake in order to prevent shaking of images or videos caused by the user's camera shake. Also, the term "closed-loop auto focus (CLAF) control" is defined as sensing the position of the lens relative to the image sensor and providing feedback to control the lens position in real time to improve the accuracy of camera shake correction.

[0077] In the following, one of the "AF movement unit 200," "OIS-x movement unit 300," and "OIS-y movement unit 400" may be referred to as the "first movement unit," one of the other may be referred to as the "second movement unit," and the remaining one may be referred to as the "third movement unit."

[0078] In the following, one of the "AF driving unit 500," "OIS-x driving unit 600," and "OIS-y driving unit 700" may be referred to as the "first driving unit," one of the other may be referred to as the "second driving unit," and the remaining one may be referred to as the "third driving unit."

[0079] In the following, one of the "AF magnet 510," "OIS-x magnet 610," "OIS-y magnet 710," and "magnet 910" may be referred to as the "first magnet," any other may be referred to as the "second magnet," any still further may be referred to as the "third magnet," and the remaining one may be referred to as the "fourth magnet."

[0080] In the following, one of the "AF coil 520," "OIS-x coil 620," and "OIS-y coil 720" may be referred to as the "first coil," one of the other may be referred to as the "second coil," and the remaining one may be referred to as the "third coil."

[0081] Hereinafter, either the "outer substrate 860" or the "inner substrate 870" may be referred to as the "first substrate", and the other may be referred to as the "second substrate".

[0082] In the following, one of the "AF guide ball 810," "OIS-x guide ball 820," and "OIS-y guide ball 830" may be referred to as the "first ball," one of the other may be referred to as the "second ball," and the remaining one may be referred to as the "third ball."

[0083] In the following, one of the "AF sensor 530," "OIS-x sensor 630," and "OIS-y sensor 730" may be referred to as the "first sensor," one of the other may be referred to as the "second sensor," and the remaining one may be referred to as the "third sensor."

[0084] In the following, one of the "AF yoke 540," "OIS-x yoke 640," "OIS-y yoke 740," "yoke 915," "yoke 920," and "yoke 950" may be referred to as the "first yoke," the other may be referred to as the "second yoke," another may be referred to as the "third yoke," another may be referred to as the "fourth yoke," another may be referred to as the "fifth yoke," and the remaining one may be referred to as the "sixth yoke."

[0085] Hereinafter, the "AF carrier 210" may be referred to as the "housing."

[0086] Hereinafter, the "OIS-x carrier 310" may be referred to as the "guide frame."

[0087] Hereinafter, the "OIS-y carrier 410" may be referred to as the "bobbin."

[0088]

[0089] The configuration of the lens driving device according to this embodiment will be described below with reference to the drawings.

[0090] 1 is a conceptual diagram of the lens driving device according to this embodiment, FIG. 2 is a perspective view of the lens driving device according to this embodiment, FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a cross-sectional view taken along line BB in FIG. 2, FIG. 5 is a cross-sectional view taken along line CC in FIG. 2, FIG. 6 is a cross-sectional view of the lens driving device according to this embodiment cut in a direction perpendicular to the optical axis and viewed from above, FIG. 7 is an exploded perspective view of the lens driving device according to this embodiment, FIG. 8 is an exploded perspective view of the lens driving device according to this embodiment viewed from a different direction than FIG. 7, and FIG. 9 is a cross-sectional view of the lens driving device according to this embodiment. 10 is a perspective view showing a fixed portion and related components of the lens driving device according to this embodiment, FIG. 11 is a perspective view showing a moving portion and related components of the lens driving device according to this embodiment, FIG. 12 is a perspective view of the moving portion and related components of the lens driving device as seen from a direction different from that of FIG. 11, FIG. 13 is a bottom perspective view of the moving portion and related components of the lens driving device as seen from a direction different from that of FIGS. 11 and 12, FIG. 14 is a perspective view showing the AF moving portion and related components of the lens driving device according to this embodiment, and FIG. 15 is a perspective view of the AF moving portion and related components of the lens driving device according to this embodiment, 16 is a perspective view showing an OIS moving section and related configuration of the lens driving device according to this embodiment, FIG. 17 is a perspective view showing an OIS moving section and related configuration of the lens driving device according to this embodiment, FIG. 18 is a perspective view showing an OIS-x moving section and related configuration of the lens driving device according to this embodiment, FIG. 19 is a perspective view showing an OIS-x moving section and related configuration of the lens driving device according to this embodiment, FIG. 20 is a perspective view showing an OIS-x moving section and related configuration of the lens driving device according to this embodiment, 21 is a bottom view showing the drive unit and related configuration of the lens drive device according to this embodiment; FIG. 22 is a cross-sectional view showing the AF guide ball and related configuration of the lens drive device according to this embodiment; FIG. 23 is a side view showing the AF guide ball and related configuration with the base omitted; FIG. 24 is a cross-sectional view showing the AF guide ball and related configuration with the AF carrier omitted; FIG. 25 is a perspective view showing the AF guide ball and related configuration with the AF carrier omitted;FIG. 26 is a perspective view showing the AF guide ball and related configurations with the AF carrier omitted, seen from a different direction than in FIG. 25.

[0091] The lens driving device 10 may be a voice coil motor (VCM). The lens driving device 10 may be a lens driving motor. The lens driving device 10 may be a lens driving actuator. The lens driving device 10 may include an AF module. The lens driving device 10 may include an OIS module.

[0092] The lens driving device 10 may include a fixed part 100. The fixed part 100 may be a part that is fixed relative to the moving part when the moving part moves. The moving part may move relative to the fixed part 100.

[0093] The lens driving device 10 may include a base 110. The fixed unit 100 may include the base 110. The base 110 may be disposed below the AF carrier 210. The base 110 may be disposed below the OIS-x carrier 310. The base 110 may be disposed below the OIS-y carrier 410. The base 110 may be coupled to the cover 120. The AF carrier 210, the OIS-x carrier 310, and the OIS-y carrier 410 may be disposed on the base 110. The AF carrier 210, the OIS-x carrier 310, and the OIS-y carrier 410 may be disposed on a lower plate portion 111 of the base 110. The AF carrier 210, the OIS-x carrier 310, and the OIS-y carrier 410 may be disposed within the base 110. The AF carrier 210 , the OIS-x carrier 310 , and the OIS-y carrier 410 may be disposed within the side wall portion 112 of the base 110 .

[0094] The base 110 may include a lower plate portion 111. The base 110 may include a side wall portion 112. The side wall portion 112 may be a "side portion." The side wall portion 112 may be a "side plate." The side wall portion 112 may be a "side wall." The side wall portion 112 of the base 110 may extend from the upper surface of the lower plate portion 111.

[0095] The side wall portion 112 of the base 110 may include a plurality of side walls. The side wall portion 112 of the base 110 may include four side walls. The side wall portion 112 of the base 110 may include first to fourth side walls. The side wall portion 112 of the base 110 may include a first side wall and a second side wall arranged opposite to each other, and a third side wall and a fourth side wall arranged opposite to each other. In this case, the AF magnet 510 may be disposed on the first side plate of the base 110. The OIS-x magnet 610 may be disposed at a position corresponding to the third side plate of the base 110. The OIS-y magnet 710 may be disposed at a position corresponding to the second side plate of the base 110.

[0096] The base 110 may include a groove 113. The groove 113 may be an "AF guide ball receiving groove." The AF guide ball 810 may be disposed in the groove 113. The groove 113 may be in direct contact with the AF guide ball 810. The groove 113 may be disposed in the optical axis direction. The groove 113 may include a plurality of grooves. The groove 113 may include two grooves. The two grooves may be disposed parallel to each other. The groove 113 may include a first groove that contacts the AF guide ball 810 at two points and a second groove that contacts the AF guide ball 810 at one point. As a variant, both the first groove and the second groove may contact the AF guide ball 810 at two points.

[0097] The base 110 may include a protrusion 114. The protrusion 114 may protrude outward. The connecting portion 712 of the outer substrate 710 may be disposed above and below the protrusion 114. A groove may be formed in the protrusion 114 to prevent interference when the connecting portion 712 of the outer substrate 710 moves.

[0098] The base 110 may include a step. The step may be formed at a lower end of an outer surface of the base 110. The step may protrude from the outer surface of the base 110. The side plate 122 of the cover 120 may be disposed on the step of the base 110.

[0099] The lens driving device 10 may include a cover 120. The fixed part 100 may include the cover 120. The cover 120 may be disposed on the base 110. The cover 120 may be coupled to the base 110. The cover 120 may be fixed to the base 110. The cover 120 may house the AF carrier 210 therein. The cover 120 may house the OIS-x carrier 310 and the OIS-y carrier 410 therein. The cover 120 may be a shielding member. The cover 120 may be a shielding can.

[0100] The cover 120 may include an upper plate 121. The upper plate 121 may be disposed on the moving part. The upward movement of the moving part may be restricted by the moving part coming into contact with the upper plate 121. The upper plate 121 may include a hole through which light passes.

[0101] The cover 120 may include side plates 122. The side plates 122 may extend from the top plate 121. The side plates 122 may be disposed on the base 110. The side plates 122 may be disposed on stepped portions formed to protrude from the lower end of the outer surface of the base 110. The side plates 122 may include a plurality of side plates. The side plates 122 may include four side plates. The side plates 122 may include a first side plate and a second side plate disposed opposite to each other, and a third side plate and a fourth side plate disposed opposite to each other.

[0102] The lens driving device 10 may include a moving unit. The moving unit may be arranged on the fixed unit 100. The moving unit may be arranged inside the fixed unit 100. The moving unit may be arranged on the fixed unit 100. The moving unit may be arranged movably on the fixed unit 100. The moving unit may be moved relative to the fixed unit 100 by a driving unit. The moving unit may move during AF driving. The moving unit may move during OIS driving. A lens may be coupled to the moving unit.

[0103] The lens driving device 10 may include an AF moving unit 200. The moving unit may include the AF moving unit 200. The AF moving unit 200 may be arranged on the fixed unit 100. The AF moving unit 200 may be arranged inside the fixed unit 100. The AF moving unit 200 may be arranged on the fixed unit 100. The AF moving unit 200 may be arranged between the fixed unit 100 and the OIS moving unit. The AF moving unit 200 may be movably arranged on the fixed unit 100. The AF moving unit 200 may be moved in the optical axis direction relative to the fixed unit 100 by an AF driving unit 500. The AF moving unit 200 may move during AF driving.

[0104] The lens driving device 10 may include an AF carrier 210. The AF movement unit 200 may include an AF carrier 210. The AF carrier 210 may be an "AF holder." The AF carrier 210 may be a "housing." The AF carrier 210 may be disposed within the base 110. The AF carrier 210 may be disposed on the base 110. The AF carrier 210 may be disposed within the cover 120. The AF carrier 210 may be disposed between the base 110 and the OIS-x carrier 310. The AF carrier 210 may be disposed between the base 110 and the OIS-y carrier 410. The AF carrier 210 may be disposed so as to be movable in the optical axis direction.

[0105] The AF carrier 210 may include a groove 211. The holder member 220 may include a groove 211. The groove 211 may be an "AF guide ball receiving groove." The AF guide ball 810 may be disposed in the groove 211. The groove 211 may be in direct contact with the AF guide ball 810. The groove 211 may be disposed in the optical axis direction. The groove 211 can guide the AF guide ball 810 to move in the optical axis direction. The groove 211 may include a plurality of grooves. The groove 211 may include two grooves. The two grooves may be disposed parallel to each other. The groove 211 may include a first groove that contacts the AF guide ball 810 at two points and a second groove that contacts the AF guide ball 810 at one point. As a variant, both the first groove and the second groove may contact the AF guide ball 810 at two points.

[0106] AF carrier 210 may include groove 212. Groove 212 may be an "OIS-x guide ball accommodating groove." Groove 212 may be formed in a side wall of AF carrier 210. Groove 212 may be formed on the inner surface of the side wall of AF carrier 210. Groove 212 may be formed on the inner circumferential surface of AF carrier 210. Groove 212 may be arranged in the x-axis direction. OIS-x guide ball 820 may be arranged in groove 212. Groove 212 can guide OIS-x guide ball 820 so that it moves in the x-axis direction. Groove 212 may be in direct contact with OIS-x guide ball 820. Groove 212 may include multiple grooves. Groove 212 may include four grooves.

[0107] The AF carrier 210 may include a protrusion 213. The protrusion 213 may be formed on an outer surface of the AF carrier 210. The protrusion 213 may protrude outward from the AF carrier 210. The connecting portions 862 of the outer substrate 860 may be disposed on the upper and lower surfaces of the protrusion 213.

[0108] In the following description, either the "groove 211" or the "groove 212" of the AF carrier 210 may be referred to as a "first groove," and the other may be referred to as a "second groove."

[0109] The lens driving device 10 may include an OIS moving unit. The moving unit may include an OIS moving unit. The OIS moving unit may be arranged in the fixed unit 100. The OIS moving unit may be arranged within the fixed unit 100. The OIS moving unit may be arranged on the fixed unit 100. The OIS moving unit may be arranged within the AF moving unit 200. The OIS moving unit may be arranged movably. The OIS moving unit may be moved in a direction perpendicular to the optical axis relative to the fixed unit 100 and the AF moving unit 200 by the OIS driving unit. The OIS moving unit may move when the OIS is driven.

[0110] The lens driving device 10 may include an OIS-x moving unit 300. The OIS moving unit may include the OIS-x moving unit 300. The OIS-x moving unit 300 may be arranged on the fixed unit 100. The OIS-x moving unit 300 may be arranged within the fixed unit 100. The OIS-x moving unit 300 may be arranged on the fixed unit 100. The OIS-x moving unit 300 may be arranged within the AF moving unit 200. The OIS-x moving unit 300 may be arranged between the fixed unit 100 and the OIS-y moving unit 400. The OIS-x moving unit 300 may be arranged between the AF moving unit 200 and the OIS-y moving unit 400. The OIS-x moving unit 300 may be arranged movably. The OIS-x moving unit 300 may be moved by an OIS-x driving unit 600 in the x-axis direction perpendicular to the optical axis relative to the fixed unit 100 and the AF moving unit 200. The OIS-x moving section 300 may move when the OIS is driven.

[0111] Lens driving device 10 may include OIS-x carrier 310. OIS-x movement unit 300 may include OIS-x carrier 310. OIS-x carrier 310 may be an "OIS-x holder." OIS-x carrier 310 may be disposed within AF carrier 210. OIS-x carrier 310 may be disposed within base 110. OIS-x carrier 310 may be disposed on base 110. OIS-x carrier 310 may be disposed within cover 140. OIS-x carrier 310 may be disposed between base 110 and OIS-y carrier 410. OIS-x carrier 310 may be disposed between AF carrier 210 and OIS-y carrier 410. OIS-x carrier 310 may be disposed to be movable in the x-axis direction perpendicular to the optical axis.

[0112] OIS-x carrier 310 may include grooves 311. Grooves 311 may be "OIS-x guide ball receiving grooves." OIS-x guide balls 820 may be arranged in grooves 311. Grooves 311 may be in direct contact with OIS-x guide balls 820. Grooves 311 may be arranged in a direction perpendicular to the optical axis. Grooves 311 may be arranged in the x-axis direction. Grooves 311 can guide OIS-x guide balls 820 so that they move in the x-axis direction. Grooves 311 may include multiple grooves. Grooves 311 may include four grooves. Grooves 311 may include a first groove that contacts OIS-x guide ball 820 at two points and a second groove that contacts OIS-x guide ball 820 at one point. As a variant, both the first groove and the second groove may contact OIS-x guide ball 820 at two points.

[0113] The OIS-x carrier 310 may include a groove 312. The groove 312 may be an "OIS-y guide ball receiving groove." The OIS-y guide ball 830 may be arranged in the groove 312. The groove 312 may be in direct contact with the OIS-y guide ball 830. The groove 312 may be arranged in a direction perpendicular to the optical axis. The groove 312 may be arranged in the y-axis direction. The groove 312 can guide the OIS-y guide ball 830 to move in the y-axis direction. The groove 312 may include a plurality of grooves. The groove 312 may include four grooves. The groove 312 may include a first groove that contacts the OIS-y guide ball 830 at two points and a second groove that contacts the OIS-y guide ball 830 at one point. As a variant, both the first groove and the second groove may contact the OIS-y guide ball 830 at two points.

[0114] The OIS-x carrier 310 may include a groove. The groove may be a "magnet receiving groove." The groove may be formed on the outer surface of the OIS-x carrier 310. The OIS-x magnet 610 may be disposed in the groove. The groove may be formed in a shape corresponding to the OIS-x magnet 610.

[0115] In the following, one of "groove 311," "groove 312," and "magnet accommodating groove" of OIS-x carrier 310 may be referred to as the "first groove," one of the other may be referred to as the "second groove," and the remaining one may be referred to as the "third groove."

[0116] The lens driving device 10 may include an OIS-y moving unit 400. The OIS moving unit may include the OIS-y moving unit 400. The OIS-y moving unit 400 may be arranged on the fixed unit 100. The OIS-y moving unit 400 may be arranged within the fixed unit 100. The OIS-y moving unit 400 may be arranged on the fixed unit 100. The OIS-y moving unit 400 may be arranged within the AF moving unit 200. The OIS-y moving unit 400 may be arranged within the OIS-x moving unit 300. The OIS-y moving unit 400 may be arranged to be movably disposed. The OIS-y moving unit 400 may be moved in the y-axis direction, which is perpendicular to both the optical axis and the x-axis, relative to the fixed unit 100, the AF moving unit 200, and the OIS-x moving unit 300 by an OIS-y driving unit 700. The OIS-y moving unit 400 may move when the OIS is driven.

[0117] The lens driving device 10 may include an OIS-y carrier 410. The OIS-y moving unit 400 may include an OIS-y carrier 410. The OIS-y carrier 410 may be a "bobbin." The OIS-y carrier 410 may be an "OIS-y holder." The OIS-y carrier 410 may be arranged inside the OIS-x carrier 310. The OIS-y carrier 410 may be arranged inside the AF carrier 210. The OIS-y carrier 410 may be arranged inside the base 110. The OIS-y carrier 410 may be arranged on the base 110. The OIS-y carrier 410 may be arranged inside the cover 140. The OIS-y carrier 410 may be arranged to be movable in the y-axis direction, which is perpendicular to both the optical axis and the x-axis.

[0118] The OIS-y carrier 410 may include a groove 411. The groove 411 may be an "OIS-y guide ball receiving groove." The OIS-y guide ball 830 may be arranged in the groove 411. The groove 411 may be in direct contact with the OIS-y guide ball 830. The groove 411 may be arranged in a direction perpendicular to the optical axis. The groove 411 may be arranged in the y-axis direction. The groove 411 can guide the OIS-y guide ball 830 to move in the y-axis direction. The groove 411 may include multiple grooves. The groove 411 may include four grooves. The groove 411 may include a first groove that contacts the OIS-y guide ball 830 at two points and a second groove that contacts the OIS-y guide ball 830 at one point. As a variant, both the first groove and the second groove may contact the OIS-y guide ball 830 at two points.

[0119] The OIS-y carrier 410 may include a groove. The groove may be a "magnet accommodating groove." The groove may be formed on the outer surface of the OIS-y carrier 410. The OIS-y magnet 710 may be disposed in the groove. The groove may be formed in a shape corresponding to the OIS-y magnet 710.

[0120] In the following, either the "groove 411" or the "magnet accommodating groove" of the OIS-y carrier 410 may be referred to as the "first groove," and the other may be referred to as the "second groove."

[0121] The lens driving device 10 may include a driving unit. The driving unit can move the moving unit relative to the fixed unit 100. The driving unit may include an AF driving unit 500. The driving unit may include an OIS driving unit. The driving unit may include an OIS-x driving unit 600. The driving unit may include an OIS-y driving unit 700. The driving unit may include a coil and a magnet.

[0122] The lens driving device 10 may include an AF driving unit 500. The AF driving unit 500 can move the AF movement unit 200 in the optical axis direction. The AF driving unit 500 can move the AF carrier 210 in the optical axis direction. The AF driving unit 500 can move the AF carrier 210 in the optical axis direction by electromagnetic force. The AF driving unit 500 may include a coil and a magnet.

[0123] In this embodiment, the AF carrier 210, the OIS-x carrier 310, and the OIS-y carrier 410 may move in the optical axis direction due to the interaction between the AF coil 520 and the AF magnet 510. The AF coil 520, the AF carrier 210, the OIS-x carrier 310, and the OIS-y carrier 410 may move together in the optical axis direction. The AF coil 520, the OIS-x coil 620, the OIS-y coil 720, the AF carrier 210, the OIS-x carrier 310, and the OIS-y carrier 410 may move together in the optical axis direction.

[0124] The lens driving device 10 may include an AF magnet 510. The AF driving unit 500 may include an AF magnet 510. The AF magnet 510 may be an "AF magnet." The AF magnet 510 may be a permanent magnet. The AF magnet 510 may be disposed on the fixed unit 100. The AF magnet 510 may be disposed on the base 110. The AF magnet 510 may be disposed on the cover 120. The AF magnet 510 may be disposed on a side plate 122 of the cover 120. The AF magnet 510 may be disposed on an outer surface of the base 110. The AF magnet 510 may be disposed on an inner surface of the base 110. The AF magnet 510 may be disposed on a side wall portion 112 of the base 110. The AF magnet 510 may be fixed to the base 110. The AF magnet 510 may be coupled to the base 110. The AF magnet 510 may be adhered to the base 110 with an adhesive. The AF magnet 510 may be disposed within the cover 120. The AF magnet 510 may interact with the AF coil 520. The AF magnet 510 may electromagnetically interact with the AF coil 520. The AF magnet 510 may be disposed at a position corresponding to the AF coil 520. The AF magnet 510 may face the AF coil 520. The AF magnet 510 may face the AF coil 520. The AF magnet 510 may overlap with the AF coil 520 in a direction perpendicular to the optical axis. The AF magnet 510 may overlap with the AF coil 520 in the x-axis direction.

[0125] The AF magnet 510 may be a four-pole magnet. The AF magnet 510 may include a four-pole magnetized magnet. The AF magnet 510 may include a first magnet portion including a north pole and a south pole and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a vertical direction. The first magnet portion and the second magnet portion may be spaced apart in a vertical direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0126] The lens driving device 10 may include an AF coil 520. The AF driving unit 500 may include an AF coil 520. The AF coil 520 may interact with the AF magnet 510. The AF coil 520 may face the AF magnet 510. The AF coil 520 may be disposed at a position corresponding to the AF magnet 510. The AF coil 520 may overlap the AF magnet 510 in a direction perpendicular to the optical axis. The AF coil 520 may be disposed on the inner substrate 720. The AF coil 520 may be disposed on the AF carrier 210. The AF coil 520 may be disposed on the AF carrier 210 via the inner substrate 720. The AF coil 520 may move integrally with the AF carrier 210.

[0127] In this embodiment, the AF coil 520 may move in the optical axis direction. The AF coil 520 may move in the optical axis direction due to interaction with the AF magnet 510. The AF coil 520 may move together with the AF movement unit 200. The AF coil 520 may move in the optical axis direction together with the AF movement unit 200. During the AF driving process, the AF coil 520 may move in the optical axis direction together with the AF movement unit 200. The AF coil 520 may be disposed on the AF movement unit 200. The AF coil 520 may be fixed to the AF movement unit 200. The AF coil 520 may be coupled to the AF movement unit 200.

[0128] The lens driving device 10 may include an AF sensor 530. The AF driving unit 500 may include the AF sensor 530. The AF sensor 530 may be a Hall sensor. The AF sensor 530 may be disposed on the inner substrate 720. The AF sensor 530 can sense the AF magnet 510. The AF sensor 530 can sense movement of the AF magnet 510. The movement amount or position of the AF magnet 510 sensed by the AF sensor 530 may be used as feedback for autofocus driving. The AF sensor 530 may be disposed on the AF movement unit 200. The AF sensor 530 may be disposed on the AF carrier 210. The AF sensor 530 may be disposed on the AF carrier 210 via the inner substrate 720. The AF sensor 530 may move together with the AF movement unit 200.

[0129] The AF sensor 530 may be a driver IC. The driver IC may include a sensing unit. The sensing unit may include a Hall element (Hall IC). The driver IC may be electrically connected to the AF coil 520. The driver IC may supply current to the AF coil 520.

[0130] The AF sensor 530 may be disposed within the AF coil 520. The AF sensor 530 may overlap the neutral portion of the AF magnet 510 in a direction perpendicular to the optical axis. As a variant, the AF sensor 530 may be disposed outside the AF coil 520.

[0131] The lens driving device 10 may include an AF yoke 540. The AF yoke 540 may be disposed at a position corresponding to the AF magnet 510. The AF yoke 540 may be disposed on the AF magnet 510. The AF yoke 540 may be disposed between the AF magnet 510 and the side plate 122 of the cover 120. The AF yoke 540 may be disposed on the outer surface of the AF magnet 510. The inner surface of the AF magnet 510 may face the AF coil 520. Thus, the AF yoke 540 can minimize leakage magnetic flux of the AF magnet 510 and enhance electromagnetic interaction between the AF magnet 510 and the AF coil 520.

[0132] The lens driving device 10 may include an OIS driving unit. The OIS driving unit can move the OIS moving unit in a direction perpendicular to the optical axis direction. The OIS driving unit can move the OIS-x carrier 310 and the OIS-y carrier 410 in a direction perpendicular to the optical axis. The OIS driving unit can move the OIS-x carrier 310 and the OIS-y carrier 410 in a direction perpendicular to the optical axis by electromagnetic force. The OIS driving unit may include a magnet and a coil.

[0133] The lens driving device 10 may include an OIS-x driving unit 600. The OIS driving unit may include an OIS-x driving unit 600. The OIS-x driving unit 600 can move the OIS-x moving unit 300 in the x-axis direction, which is perpendicular to the optical axis direction. The OIS-x driving unit 600 can move the OIS-x carrier 310 in the x-axis direction. The OIS-x driving unit 600 can move the OIS-x carrier 310 and the OIS-y carrier 410 in the x-axis direction, which is perpendicular to the optical axis. The OIS-x driving unit 600 can move the OIS-x carrier 310 and the OIS-y carrier 410 in the x-axis direction, which is perpendicular to the optical axis, by electromagnetic force. The OIS-x driving unit 600 may include a coil and a magnet.

[0134] In this embodiment, the OIS-x magnet 610 and the OIS-x coil 620 can move the OIS moving unit in the x-axis direction, which is perpendicular to the optical axis direction. The OIS-x carrier 310 and the OIS-y carrier 410 may move in the x-axis direction, which is perpendicular to the optical axis direction, due to interaction between the OIS-x coil 620 and the OIS-x magnet 610. The OIS-x magnet 610, the OIS-x carrier 310, and the OIS-y carrier 410 may move together in the x-axis direction.

[0135] Lens driving device 10 may include an OIS-x magnet 610. The OIS driving unit may include an OIS-x magnet 610. The OIS-x magnet 610 may be an "OIS-x magnet." The OIS-x magnet 610 may be a permanent magnet. The OIS-x magnet 610 may be disposed in the OIS moving unit. The OIS-x magnet 610 may be spaced apart from the AF magnet 510. The OIS-x magnet 610 may be disposed in OIS-x moving unit 300. The OIS-x magnet 610 may be disposed in OIS-x carrier 310. The OIS-x magnet 610 may be disposed on the outer surface of OIS-x carrier 310. The OIS-x magnet 610 may be fixed to OIS-x carrier 310. The OIS-x magnet 610 may be coupled to OIS-x carrier 310. The OIS-x magnet 610 may be adhered to OIS-x carrier 310 with an adhesive. The OIS-x magnet 610 may be disposed within the cover 120. The OIS-x magnet 610 may interact with the OIS-x coil 620. The OIS-x magnet 610 may electromagnetically interact with the OIS-x coil 620. The OIS-x magnet 610 may be disposed at a position corresponding to the OIS-x coil 620. The OIS-x magnet 610 may face the OIS-x coil 620. The OIS-x magnet 610 may face the OIS-x coil 620. The OIS-x magnet 610 may overlap the OIS-x coil 620 in a direction perpendicular to the optical axis. The OIS-x magnet 610 may overlap the OIS-x coil 620 in the y-axis direction. The OIS-x magnet 610 may move in the x-axis direction.

[0136] The OIS-x magnet 610 may be a four-pole magnet. The OIS-x magnet 610 may include a four-pole magnetized magnet. The OIS-x magnet 610 may include a first magnet portion including a north pole and a south pole and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be spaced apart in a horizontal direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0137] The lens driving device 10 may include an OIS-x coil 620. The OIS driving unit may include an OIS-x coil 620. The OIS-x coil 620 may interact with the OIS-x magnet 610. The OIS-x coil 620 can move the OIS-x magnet 610 in the x-axis direction, which is perpendicular to the optical axis. The OIS-x coil 620 can move the OIS-x magnet 610 in the x-axis direction by interacting with the OIS-x magnet 610. The OIS-x coil 620 may face the OIS-x magnet 610. The OIS-x coil 620 may be disposed at a position corresponding to the OIS-x magnet 610. The OIS-x coil 620 may overlap the OIS-x magnet 610 in the direction perpendicular to the optical axis. The OIS-x coil 620 may overlap the OIS-x magnet 610 in the y-axis direction. OIS-x coil 620 may be disposed on inner substrate 720. OIS-x coil 620 may be disposed on AF carrier 210. OIS-x coil 620 may be disposed on AF carrier 210 via inner substrate 720. OIS-x coil 620 may move integrally with AF moving section 200.

[0138] In this embodiment, OIS-x coil 620 may move together with AF shifter 200. OIS-x coil 620 may move in the optical axis direction together with AF shifter 200. During the AF driving process, OIS-x coil 620 may move in the optical axis direction together with AF shifter 200. OIS-x coil 620 may be disposed on AF shifter 200. OIS-x coil 620 may be fixed to AF shifter 200. OIS-x coil 620 may be coupled to AF shifter 200.

[0139] Lens driving device 10 may include OIS-x sensor 630. The OIS driving unit may include OIS-x sensor 630. OIS-x sensor 630 may be disposed on inner substrate 720. OIS-x sensor 630 may be disposed on AF carrier 210. OIS-x sensor 630 may be disposed on OIS moving unit 200. OIS-x sensor 630 may include a Hall sensor. OIS-x sensor 630 can sense OIS-x magnet 610. OIS-x sensor 630 can sense the magnetic force of OIS-x magnet 610. OIS-x sensor 630 may be disposed below OIS-magnet 520. OIS-x sensor 630 may overlap OIS-magnet 520 in the optical axis direction. As a variant, OIS-x sensor 630 may be disposed inside OIS-x coil 620. In this case, OIS-x sensor 630 may overlap OIS-x coil 620 in the optical axis direction. OIS-x sensor 630 may face OIS-x magnet 610. OIS-x sensor 630 may be disposed at a position corresponding to OIS-x magnet 610. OIS-x sensor 630 can sense the movement of OIS-x magnet 610. The amount of movement or position of OIS-x magnet 610 sensed by OIS-x sensor 630 may be used as feedback for driving image stabilization in the x-axis direction.

[0140] The lens driving device 10 may include an OIS-x yoke 640. The OIS-x yoke 640 may be disposed on the OIS-x magnet 610. The OIS-x yoke 640 may be disposed between the OIS-x magnet 610 and the OIS-x carrier 310. The OIS-x yoke 640 can prevent magnetic flux leakage from the OIS-x magnet 610 and improve the interaction force with the OIS-x coil 620.

[0141] The lens driving device 10 may include an OIS-y driving unit 700. The OIS driving unit may include an OIS-y driving unit 700. The OIS-y driving unit 700 can move the OIS-y moving unit 400 in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y driving unit 700 can move the OIS-y carrier 410 in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y driving unit 700 can move the OIS-y carrier 410 in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction, by electromagnetic force. The OIS-y driving unit 700 may include a coil and a magnet.

[0142] In this embodiment, the OIS-y magnet 710 and the OIS-y coil 720 can move the OIS moving unit in the y-axis direction, which is perpendicular to the optical axis direction and the x-axis direction. The OIS-y carrier 410 may move in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction, due to interaction between the OIS-y coil 720 and the OIS-y magnet 710. The OIS-y magnet 710 and the OIS-y carrier 410 may move together in the y-axis direction. The OIS-y magnet 710 may overlap the AF magnet 510 in the x-axis direction.

[0143] The lens driving device 10 may include an OIS-y magnet 710. The OIS-y driving unit 700 may include an OIS-y magnet 710. The OIS-y magnet 710 may be an "OIS-y magnet." The OIS-y magnet 710 may be a permanent magnet. The OIS-y magnet 520 may be arranged in the OIS moving unit. The OIS-y magnet 710 may be spaced apart from the OIS-x magnet 610. The OIS-y magnet 710 may be spaced apart from the AF magnet 510. The OIS-y magnet 710 may be arranged in the OIS-y moving unit 400. The OIS-y magnet 710 may be arranged in the OIS-y carrier 410. The OIS-y magnet 710 may be arranged on the outer surface of the OIS-y carrier 410. The OIS-y magnet 710 may be fixed to the OIS-y carrier 410. The OIS-y magnet 710 may be coupled to the OIS-y carrier 410. The OIS-y magnet 710 may be glued to the OIS-y carrier 410. The OIS-y magnet 710 may be disposed within the cover 120. The OIS-y magnet 710 may interact with the OIS-y coil 720. The OIS-y magnet 710 may electromagnetically interact with the OIS-y coil 720. The OIS-y magnet 710 may be disposed at a position corresponding to the OIS-y coil 720. The OIS-y magnet 710 may face the OIS-y coil 720. The OIS-y magnet 710 may face the OIS-y coil 720. The OIS-y magnet 710 may overlap the OIS-y coil 720 in a direction perpendicular to the optical axis. The OIS-y magnet 710 may overlap the OIS-y coil 720 in the x-axis direction. The OIS-y magnet 710 may move in the y-axis direction.

[0144] The OIS-y magnet 710 may be a four-pole magnet. The OIS-y magnet 710 may include a four-pole magnetized magnet. The OIS-y magnet 710 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be spaced apart in a horizontal direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0145] The lens driving device 10 may include an OIS-y coil 720. The OIS-y driving unit 700 may include an OIS-y coil 720. The OIS-y coil 720 may interact with the OIS-y magnet 710. The OIS-y coil 720 may be arranged on the opposite side of the AF coil 520 with respect to the optical axis. The OIS-y coil 720 can move the OIS-y magnet 710 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis. The OIS-y coil 720 can move the OIS-y magnet 710 in the y-axis direction by interacting with the OIS-y magnet 710. The OIS-y coil 720 may face the OIS-y magnet 710. The OIS-y coil 720 may be arranged at a position corresponding to the OIS-y magnet 710. The OIS-y coil 720 may overlap the OIS-y magnet 710 in a direction perpendicular to the optical axis. The OIS-y coil 720 may overlap the OIS-y magnet 710 in the x-axis direction. The OIS-y coil 720 may be disposed on the inner substrate 720. The OIS-y coil 720 may be disposed on the inner substrate 720. The OIS-y coil 720 may be disposed on the AF carrier 200. The OIS-y coil 720 may be disposed on the AF carrier 210 via the inner substrate 720. The OIS-y coil 720 may move integrally with the AF moving unit 200.

[0146] In this embodiment, the OIS-y coil 720 may move together with the AF shifter 200. The OIS-y coil 720 may move in the optical axis direction together with the AF shifter 200. During the AF driving process, the OIS-y coil 720 may move in the optical axis direction together with the AF shifter 200. The OIS-y coil 720 may be disposed on the AF shifter 200. The OIS-y coil 720 may be fixed to the AF shifter 200. The OIS-y coil 720 may be coupled to the AF shifter 200.

[0147] The lens driving device 10 may include an OIS-y sensor 730. The OIS-y driving unit 700 may include an OIS-y sensor 730. The OIS-y sensor 730 may be disposed on the inner substrate 720. The OIS-y sensor 730 may be disposed on the AF carrier 210. The OIS-y sensor 730 may be disposed on the OIS moving unit 200. The OIS-y sensor 730 may include a Hall sensor. The OIS-y sensor 730 can sense the OIS-y magnet 710. The OIS-y sensor 730 can sense the magnetic force of the OIS-y magnet 710. The OIS-y sensor 730 may be disposed below the OIS-y magnet 620. The OIS-y sensor 730 may overlap the OIS-y magnet 620 in the optical axis direction. As a variant, the OIS-y sensor 730 may be disposed inside the OIS-y coil 720. In this case, the OIS-y sensor 730 may overlap the OIS-y coil 720 in the optical axis direction. The OIS-y sensor 730 may face the OIS-y magnet 710. The OIS-y sensor 730 may be disposed at a position corresponding to the OIS-y magnet 710. The OIS-y sensor 730 can sense the movement of the OIS-y magnet 710. The amount of movement or position of the OIS-y magnet 710 sensed by the OIS-y sensor 730 may be used as feedback for driving the image stabilization in the y-axis direction.

[0148] The lens driving device 10 may include an OIS-y yoke 740. The OIS-y yoke 740 may be disposed on the OIS-y magnet 710. The OIS-y yoke 740 may be disposed between the OIS-y magnet 710 and the OIS-y carrier 410. The OIS-y yoke 740 can prevent magnetic flux leakage from the OIS-y magnet 710 and improve the interaction force with the OIS-y coil 720.

[0149] When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may be arranged in this order on an imaginary straight line. When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may be arranged in this order on an imaginary straight line. When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may be arranged in this order. When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may be arranged in this order in the x-axis direction. When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may overlap in the x-axis direction.

[0150] When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may be arranged in this order on an imaginary first straight line parallel to the x-axis direction. When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may be arranged in this order on an imaginary first straight line parallel to the x-axis direction. When viewed from above, the AF magnet 510, the AF coil 520, the OIS-y magnet 710, and the OIS-y coil 720 may overlap in this order on the imaginary first straight line parallel to the x-axis direction.

[0151] When viewed from above, the AF magnet 510, the AF coil 520, the magnet 910, and the yoke 920 may be arranged in this order on an imaginary second straight line parallel to the x-axis direction. When viewed from above, the AF magnet 510, the AF coil 520, the magnet 910, and the yoke 920 may be arranged in this order on an imaginary second straight line parallel to the x-axis direction. When viewed from above, the AF magnet 510, the AF coil 520, the magnet 910, and the yoke 920 may be overlapped in this order on the imaginary second straight line parallel to the x-axis direction.

[0152] In this embodiment, the cover 120 may include first and second side plates disposed on opposite sides, and third and fourth side plates disposed on opposite sides. An AF driver 500 may be disposed at a position corresponding to the first side plate of the cover 120, an OIS-x driver 600 may be disposed at a position corresponding to the third side plate of the cover 120, and an OIS-y driver 700 may be disposed at a position corresponding to the second side plate of the cover 120.

[0153] The lens driving device 10 may include a guide member. The guide member may include a ball. The guide member may include a pin. The guide member may include a cylindrical member. The guide member can guide the movement of the movable part relative to the fixed part 100 in a specific direction.

[0154] The lens driving device 10 may include an AF guide ball 810. The AF guide ball 810 can guide the movement of the AF carrier 210 relative to the base 110 in the optical axis direction. The AF guide ball 810 may be disposed between the fixed unit 100 and the AF movement unit 200. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210 in the x direction. The AF guide ball 810 may include a ball disposed in the groove 113 of the base 110. The AF guide ball 810 may include a ball disposed in a metal member 940. The AF guide ball 810 may be disposed in the groove 211 of the AF carrier 210. The AF guide ball 810 may be spherical. The AF guide ball 810 may be made of metal. Grease may be applied to the surface of the AF guide ball 810.

[0155] The AF guide balls 810 may be arranged at a first corner of the base 110. The AF guide balls 810 may be arranged at a second corner of the base 110 opposite the first corner. The AF guide balls 810 may be arranged at the first and second corners of the base 110. Two sets of AF guide balls 810 may be arranged at each of the first and second corners of the base 110. In this case, one set may include four balls. The two sets may be arranged on opposite sides of the pillar portion of the AF carrier 210.

[0156] The AF guide balls 810 may include a plurality of balls. The AF guide balls 810 may include eight balls. The eight balls may be arranged in two sets of four on one side. The four balls may be different sizes. Two larger balls may be arranged at the top and bottom, with two smaller balls arranged between them. Four AF guide balls 810 may be arranged on one side of the AF magnet 510, and the remaining four AF guide balls 810 may be arranged on the other side of the AF magnet 510.

[0157] Two of the four sets of AF guide balls 810 may be in direct contact with the base 110 and the AF carrier 210. The remaining two of the four sets of AF guide balls 810 may be in direct contact with the AF carrier 210 and the metal member 940.

[0158] The lens driving device 10 may include an OIS-x guide ball 820. The OIS-x guide ball 820 can guide the movement of the OIS-x carrier 310 relative to the AF carrier 210 in the x-axis direction. The OIS-x guide ball 820 may be disposed between the AF movement unit 200 and the OIS-x movement unit 300. The OIS-x guide ball 820 may be disposed between the AF carrier 210 and the OIS-x carrier 310. The OIS-x guide ball 820 may be disposed between the AF carrier 210 and the OIS-x carrier 310 in the y-axis direction. The entire area of ​​the OIS-x guide ball 820 from its lower end to its upper end may overlap with both the AF carrier 210 and the OIS-x carrier 310 in the y-axis direction. The entire area of ​​the OIS-x guide ball 820 may overlap with the AF carrier 210 and the OIS-x carrier 310 in the y-axis direction. OIS-x guide ball 820 may be disposed between the inner surface of AF carrier 210 and the outer surface of OIS-x carrier 310. When viewed from the outside of OIS-x carrier 310, OIS-x guide ball 820 may overlap OIS-x magnet 610 in the horizontal direction.

[0159] The OIS-x guide ball 820 may be arranged in the groove 212 of the AF carrier 210. The OIS-x guide ball 820 may be arranged in the groove 311 of the OIS-x carrier 310. The OIS-x guide ball 820 may include a first ball that contacts the AF carrier 210 and the OIS-x carrier 310 at four points, and a second ball that contacts the AF carrier 210 and the OIS-x carrier 310 at three points. The OIS-x guide ball 820 may be spherical. The OIS-x guide ball 820 may be made of metal. Grease may be applied to the surface of the OIS-x guide ball 820.

[0160] The OIS-x guide balls 820 may include multiple balls. The OIS-x guide balls 820 may include four balls. Two OIS-x guide balls 820 may be arranged on one side of the OIS-x magnet 610, and the remaining two OIS-x guide balls 820 may be arranged on the other side of the OIS-x magnet 610.

[0161] The lens driving device 10 may include an OIS-y guide ball 830. The OIS-y guide ball 830 can guide the movement of the OIS-y carrier 410 relative to the OIS-x carrier 310 in the y-axis direction. The OIS-y guide ball 830 may be arranged between the OIS-x movement unit 300 and the OIS-y movement unit 400. The OIS-y guide ball 830 may be arranged between the OIS-x carrier 310 and the OIS-y carrier 410. The OIS-y guide ball 830 may be arranged between the OIS-x carrier 310 and the OIS-y carrier 410 in the x-axis direction. The entire region from the lower end to the upper end of the OIS-y guide ball 830 may overlap both the OIS-x carrier 310 and the OIS-y carrier 410 in the x-axis direction. The OIS-y guide ball 830 may be arranged between the inner surface of the OIS-x carrier 310 and the outer surface of the OIS-y carrier 410. When viewed from the outside of the OIS-y carrier 410, the OIS-y guide ball 830 may overlap the OIS-y magnet 710 in the horizontal direction, where the horizontal direction may be any direction perpendicular to the optical axis.

[0162] A portion of the OIS-y guide ball 830 may overlap with the OIS-x carrier 310 in the y-axis direction. Another portion of the OIS-y guide ball 830 may overlap with the OIS-y carrier 410 in the y-axis direction.

[0163] The OIS-y guide ball 830 may be disposed in the groove 312 of the OIS-x carrier 310. The OIS-y guide ball 830 may be disposed in the groove 411 of the OIS-y carrier 410. The OIS-y guide ball 830 may include a first ball that contacts the OIS-x carrier 310 and the OIS-y carrier 410 at four points, and a second ball that contacts the OIS-x carrier 310 and the OIS-y carrier 410 at three points. The OIS-y guide ball 830 may be spherical. The OIS-y guide ball 830 may be made of metal. Grease may be applied to the surface of the OIS-y guide ball 830.

[0164] The OIS-y guide balls 830 may include multiple balls. The OIS-y guide balls 830 may include four balls. Two OIS-y guide balls 830 may be arranged on one side of the OIS-y magnet 710, and the remaining two OIS-y guide balls 830 may be arranged on the other side of the OIS-y magnet 710.

[0165] The lens driving device 10 may include substrates 860 and 870. The substrates 860 and 870 may include flexible printed circuit boards (FPCBs). The substrates 860 and 870 may be electrically connected to the coils 520, 620, and 720. The substrates 860 and 870 may be electrically connected to the sensors 530, 630, and 730.

[0166] The lens driving device 10 may include an outer substrate 860. The outer substrate 860 may be disposed on the base 110. The outer substrate 860 may be electrically connected to the coils 520, 620, and 720. The outer substrate 860 may be electrically connected to the sensors 530, 630, and 730. The outer substrate 860 may connect the AF carrier 210 to the base 110. The outer substrate 860 may elastically connect the AF carrier 210 to the base 110. The outer substrate 860 may support the AF carrier 210 movably relative to the base 110. The outer substrate 860 may guide the AF carrier 210 to move in the optical axis direction relative to the base 110. The outer substrate 860 may include a flexible substrate. The outer substrate 860 may include a flexible printed circuit board (FPCB). The outer substrate 860 may include an elastic portion. The outer substrate 860 may include an elastic member. The outer substrate 860 may be disposed on the fixed portion 100. The outer substrate 860 may include an outer portion 861 disposed on the fixed portion 100, and a connecting portion 862 extending from the outer portion 861 and coupled to the inner substrate 870.

[0167] The outer substrate 860 may include an outer portion 861. The outer portion 861 may be disposed on the base 110. The outer portion 861 may be formed to surround the side surfaces of the base 110. The outer portion 861 may be disposed on three side surfaces of the base 110. The outer portion 861 may include two terminal portions. The two terminal portions may be disposed on opposite sides of the optical axis. The terminal portion may include a terminal 862-1.

[0168] The outer substrate 860 may include a terminal 861-1. An outer portion 861 of the outer substrate 860 may include a terminal 861-1. The terminal 861-1 may be electrically connected to a terminal 862-1. The terminal 861-1 may be disposed at a lower end of the base 110. The terminal 861-1 may be coupled to the printed circuit board 50. The terminal 861-1 may be coupled to a terminal of the printed circuit board 50 by solder. The terminal 861-1 may be coupled to a terminal of the printed circuit board 50 by a conductive member. The terminal 861-1 may be coupled to a terminal of the printed circuit board 50. The terminal 861-1 may be electrically coupled to a terminal of the printed circuit board 50.

[0169] The outer substrate 860 may include a connecting portion 862. The connecting portion 862 may be an "extension portion." The connecting portion 862 may be a "leg portion." The connecting portion 862 may extend from the outer portion 861. At least a portion of the connecting portion 862 may move together with the AF carrier 210. The extending portion may extend from the outer portion 861. At least a portion of the extending portion may move together with the AF carrier 210. At least a portion of the connecting portion 862 may be arranged perpendicular to the optical axis direction. As a variant, at least a portion of the connecting portion 862 may be arranged parallel to the optical axis direction. The connecting portion 862 of the outer substrate 860 may be coupled to the inner substrate 870 so that the inner substrate 870 is movable in the optical axis direction.

[0170] The connecting portion 862 may include a plurality of connecting portions. The connecting portion 862 may include a first connecting portion and a second connecting portion. The second connecting portion may be disposed below the first connecting portion.

[0171] The outer substrate 860 may include a terminal 862-1. The connecting portion 862 of the outer substrate 860 may include a terminal 862-1. The terminal 862-1 may be coupled to a terminal 871-1 of the inner substrate 870. The terminal 862-1 of the outer substrate 860 may be coupled to the terminal 871-1 of the inner substrate 870 by solder. The terminal 862-1 of the outer substrate 860 may be coupled to the terminal 871-1 of the inner substrate 870 by a conductive member. The terminal 862-1 of the outer substrate 860 may be coupled to the terminal 871-1 of the inner substrate 870. The terminal 862-1 of the outer substrate 860 may be electrically coupled to the terminal 871-1 of the inner substrate 870.

[0172] In the following description, one of the "terminal 861-1" and the "terminal 862-1" of the outer substrate 860 may be referred to as the "first terminal," and the other may be referred to as the "second terminal."

[0173] The lens driving device 10 may include an inner substrate 870. The inner substrate 870 may be electrically connected to the coils 520, 620, and 720. The inner substrate 870 may be electrically connected to the sensors 530, 630, and 730. The inner substrate 870 may be disposed in the AF movement unit 200. The inner substrate 870 may be disposed in the AF carrier 210. The inner substrate 870 may be fixed to the AF carrier 210. The inner substrate 870 may be bonded to the AF carrier 210. The inner substrate 870 may be adhered to the AF carrier 210 with an adhesive. The inner substrate 870 may include a flexible substrate. The inner substrate 870 may include a flexible printed circuit board (FPCB). The inner substrate 870 may include an elastic portion. The inner substrate 870 may include an elastic member.

[0174] The inner substrate 870 may include a side plate portion 871. The side plate portion 871 may be arranged on a side surface of the AF carrier 210. The side plate portion 871 may be arranged on an outer surface of the AF carrier 210. In another embodiment, the side plate portion 871 may be arranged on an inner surface of the AF carrier 210. The side plate portion 871 of the inner substrate 870 may include a plurality of portions. The side plate portion 871 may include first to fourth portions.

[0175] The inner substrate 870 may include a first portion. The first portion may be disposed on the AF carrier 210. The first portion may be disposed on a first side surface of the AF carrier 210. The AF coil 520 may be disposed on the first portion of the inner substrate 870. The AF sensor 530 may be disposed on the first portion of the inner substrate 870. The AF yoke 540 may be disposed on the first portion of the inner substrate 870.

[0176] The inner substrate 870 may include a second portion. The second portion may be arranged on the opposite side of the first portion. The second portion may be arranged on the AF carrier 200. The second portion may be arranged on a second side of the AF carrier 200. The OIS-y coil 720 may be arranged on the second portion of the inner substrate 870. The OIS-y sensor 730 may be arranged on the second portion of the inner substrate 870. More specifically, the OIS-y sensor 730 may be arranged on a lower plate portion 872 that is bent from below the second portion of the inner substrate 870. The OIS-y sensor 730 may be arranged on an upper surface of the lower plate portion 872.

[0177] Inner substrate 870 may include a third portion. The third portion may be disposed on AF carrier 200. The third portion may be disposed on a third side surface of AF carrier 200. OIS-x coil 620 may be disposed on the third portion of inner substrate 870. OIS-x sensor 630 may be disposed on the third portion of inner substrate 870. More specifically, OIS-x sensor 630 may be disposed on a lower plate portion 872 that is bent from the underside of the third portion of inner substrate 870. OIS-x sensor 630 may be disposed on the upper surface of lower plate portion 872.

[0178] The inner substrate 870 may include a fourth portion. The fourth portion may be disposed opposite the third portion. The fourth portion may be disposed on the AF carrier 200. The fourth portion may be disposed on a fourth side of the AF carrier 200.

[0179] The inner substrate 870 may include a terminal 871-1. The terminal 871-1 may be disposed on a fourth portion of the inner substrate 870. The terminal 871-1 may be electrically connected to the coils 520, 620, and 720. The terminal 871-1 may be electrically connected to the sensors 530, 630, and 730.

[0180] The lens driving device may include an AF guide ball pressing member. The AF guide ball pressing member can pressurize the AF guide ball 810. The AF guide ball pressing member can maintain the AF guide ball 810 in contact with the fixed unit 100 and the AF moving unit 200. The AF guide ball pressing member can maintain the AF guide ball 810 in contact with the base 110 and the AF carrier 210.

[0181] The AF guide ball pressure member may include a pressure member. The pressure member may include an elastic member 930. The pressure member may include an attractive member. The pressure member may include a repulsive member.

[0182] The lens driving device may include an elastic member 930. The elastic member 930 may be a spring. The elastic member 930 may be a tape player spring. The elastic member 930 may be disposed in the fixed part 100. The elastic member 930 may press the AF guide ball 810 toward the AF movement part 200. Alternatively, the elastic member 930 may be disposed in the AF movement part 200. In this case, the elastic member 930 may press the AF guide ball 810 toward the fixed part 100. The elastic member 930 may be disposed in either the fixed part 100 or the AF movement part 200, and may press the AF guide ball 810 toward the other of the fixed part 100 or the AF movement part 200. The elastic member 930 may press the metal member 940. The elastic member 930 may be disposed between the metal member 940 and the base 110. The elastic member 930 may be disposed between the AF guide ball 810 and the base 110. The elastic member 930 may be disposed in the base 110. The elastic member 930 can press the AF guide balls 810 toward the AF carrier 210. This allows the AF guide balls 810 to be maintained in contact with the metal member 940 and the AF carrier 210.

[0183] The lens driving device may include a metal member 940. The metal member 940 may be disposed between the elastic member 930 and the AF guide ball 810. The metal member 940 can press the AF guide ball 810 toward the AF carrier 210 via the elastic member 930.

[0184] The lens driving device may include a lid 945. The lid 945 may be disposed on the AF guide ball 810. The lid 945 may overlap the AF guide ball 810 in the optical axis direction. The lid 945 may be disposed on the groove 113 of the base 110 and the groove 211 of the AF carrier 210 so as to prevent the AF guide ball 810 from coming off upward.

[0185] As a modified example, the AF ball pressure member may include a yoke. The yoke can bring the first moving unit 200 into close contact with the fixed unit 100. The yoke can bring the first moving unit 200 into contact with the fixed unit 100. The yoke can press the first moving unit 200 toward the fixed unit 100. The yoke may be arranged so that an attractive force acts on the AF magnet 510. The yoke may be arranged on the inner substrate 870. The yoke may be arranged at a position corresponding to the AF magnet 510. The "yoke" in the modified example may also be referred to as a "first yoke," a "second yoke," etc. The yoke may be understood as one component of the first moving unit 200. Alternatively, the yoke may be coupled to the first moving unit 200 as a separate component.

[0186] The lens driving device may include an OIS-x guide ball pressure member. The OIS-x guide ball pressure member can apply pressure to OIS-x guide ball 820. The OIS-x guide ball pressure member can maintain OIS-x guide ball 820 in contact with AF movement unit 200 and OIS-x movement unit 300. The OIS-x guide ball pressure member can maintain OIS-x guide ball 820 in contact with AF carrier 210 and OIS-x carrier 310.

[0187] The lens driving device may include a yoke 950. The yoke 950 may be an "attractive yoke." The yoke 950 may be disposed at a position corresponding to the OIS-x magnet 610. An attractive force may act between the yoke 950 and the OIS-x magnet 610. The attractive force between the yoke 950 and the OIS-x magnet 610 may maintain the OIS-x guide ball 820 in contact with the AF carrier 210 and the OIS-x carrier 310. The yoke 950 may be disposed on the AF carrier 210. The yoke 950 may move integrally with the AF carrier 210. The yoke 950 may be disposed on the inner substrate 870. The yoke 950 may be disposed on the outer surface of the inner substrate 870. The yoke 950 may be disposed on the opposite side of the inner substrate 870 from the OIS-x coil 620. The yoke 950 may bring the OIS-x carrier 310 into close contact with the AF carrier 210. The yoke 950 can bring the guide frame into close contact with the first mover unit 200. The yoke 950 can bring the OIS-x carrier 310 into contact with the AF carrier 210. The yoke 950 can press the OIS-x carrier 310 toward the AF carrier 210. The yoke 950 may be understood as one component of the first mover unit 200. Alternatively, the yoke 950 may be coupled to the first mover unit 200 as a component separate from the first mover unit 200.

[0188] The lens driving device may include an OIS-y guide ball pressing member. The OIS-y guide ball pressing member can press the OIS-y guide ball 830. The OIS-y guide ball pressing member can maintain the OIS-y guide ball 830 in contact with the OIS-x movement unit 300 and the OIS-y movement unit 400. The OIS-y guide ball pressing member can maintain the OIS-y guide ball 830 in contact with the OIS-x carrier 310 and the OIS-y carrier 410.

[0189] The lens driver may include a magnet 910. The magnet 910 may be an "attractive magnet." The magnet 910 may be disposed in the OIS-y moving part 400. The magnet 910 may be spaced apart from the OIS-y magnet 710. The magnet 910 may not interact with the OIS-y coil 720.

[0190] The lens driving device may include a yoke 915. The yoke 915 may be disposed at a position corresponding to the magnet 910. The yoke 915 may be disposed on the magnet 910. The yoke 915 may be disposed between the magnet 910 and the OIS-y carrier 410. The yoke 915 may be disposed on the inner surface of the magnet 910. The outer surface of the magnet 910 may face the yoke 920. Thus, the yoke 915 can minimize leakage magnetic flux of the magnet 910 and increase the attractive force between the magnet 910 and the yoke 920.

[0191] The lens driving device may include a yoke 920. The yoke 920 may be an "attractive yoke." The yoke 920 may be disposed at a position corresponding to the magnet 910. An attractive force may act between the yoke 920 and the magnet 910. The attractive force between the yoke 920 and the magnet 910 may maintain the OIS-y guide ball 830 in contact with the OIS-x carrier 310 and the OIS-y carrier 410. The yoke 920 may be disposed on the OIS-x carrier 310. The yoke 920 may move integrally with the OIS-x carrier 310. The yoke 920 may be disposed on the OIS-x mover 300. The yoke 920 may be disposed on the OIS-x mover 300 so that an attractive force acts between the yoke 920 and the magnet 910. The yoke 920 can bring the OIS-y carrier 410 into close contact with the OIS-x carrier 310. The yoke 920 can bring the bobbin into close contact with the guide frame. The yoke 920 can bring the OIS-y carrier 410 into contact with the OIS-x carrier 310. The yoke 920 can press the OIS-y carrier 410 toward the OIS-x carrier 310.

[0192] As a modified example, the yoke 920 can bring the OIS-y carrier 410 into close contact with the AF carrier 210. The yoke 920 can bring the bobbin into close contact with the first mover unit 200. The yoke 920 can bring the OIS-y carrier 410 into contact with the AF carrier 210. The yoke 920 can press the OIS-y carrier 410 toward the AF carrier 210. In this case, the yoke 920 may be understood as one component of the first mover unit 200. Alternatively, the yoke 920 may be coupled to the first mover unit 200 as a component separate from the first mover unit 200.

[0193] In this embodiment, when OIS-x driving unit 600 moves OIS-x moving unit 300 in the x-axis direction, the distance in the x-axis direction between magnet 910 and yoke 920 may be maintained. At this time, the distance in the x-axis direction between OIS-y magnet 710 and OIS-y coil 720 may vary.

[0194]

[0195] Hereinafter, autofocus (AF) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0196] Fig. 27 to Fig. 29 are diagrams for explaining autofocus driving of the lens driving device according to this embodiment. Fig. 27 is a cross-sectional view showing the state of the moving part in the initial state when no current is applied to the AF coil, Fig. 28 is a cross-sectional view showing the state when a forward current is applied to the AF coil and the moving part has moved upward in the optical axis direction, and Fig. 29 is a cross-sectional view showing the state when a reverse current is applied to the AF coil and the moving part has moved downward in the optical axis direction.

[0197] 27, the moving unit may be disposed at positions spaced apart from both the upper plate 121 of the cover 120 and the base 110 in an initial position where no current is applied to the AF coil 520. In this case, the moving unit may be the AF moving unit 200. Alternatively, the moving unit may include the AF moving unit 200 and the OIS moving unit.

[0198] When a forward current is applied to the AF coil 520, the AF coil 520 may move upward in the optical axis direction due to electromagnetic interaction between the AF coil 520 and the AF magnet 510 (see A in FIG. 28 ). At this time, the AF carrier 210 may move upward in the optical axis direction together with the AF coil 520. Furthermore, the OIS-x carrier 310, the OIS-y carrier 410, and the lens may move upward in the optical axis direction together with the AF carrier 210. This changes the distance between the lens and the image sensor, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0199] When a reverse current is applied to the AF coil 520, the AF coil 520 may move downward in the optical axis direction due to electromagnetic interaction between the AF coil 520 and the AF magnet 510 (see B in FIG. 29 ). At this time, the AF carrier 210 may move downward in the optical axis direction together with the AF coil 520. Furthermore, the OIS-x carrier 310, the OIS-y carrier 410, and the lens may move downward in the optical axis direction together with the AF carrier 210. This changes the distance between the lens and the image sensor, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0200] Meanwhile, during the movement of the AF coil 520, the AF sensor 530 moves together with the AF coil 520 and can sense the amount of movement and position of the lens in the optical axis direction by sensing the strength of the magnetic field of the AF magnet 510. The amount of movement and position of the lens in the optical axis direction sensed by the AF sensor 530 may be used for autofocus feedback control.

[0201]

[0202] Hereinafter, optical image stabilization (OIS) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0203] 30 to 32 are diagrams illustrating the image stabilization drive of the lens driving device according to this embodiment. Fig. 30 is a cross-sectional view showing the state of the OIS moving section in the initial state when no current is applied to the OIS-x coil and the OIS-y coil, Fig. 31 is a cross-sectional view showing the state when current is applied to the OIS-x coil and the OIS moving section has moved in the x-axis direction perpendicular to the optical axis, and Fig. 32 is a cross-sectional view showing the state when current is applied to the OIS-y coil and the OIS moving section has moved in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0204] 30, the moving portion may be placed in an initial position where no current is applied to the OIS-x coil 620 and the OIS-y coil 720. At this time, the moving portion may be the OIS moving portion.

[0205] When a current is applied to the OIS-x coil 620, electromagnetic interaction between the OIS-x coil 620 and the OIS-x magnet 610 may cause the OIS-x magnet 610 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 31 ). At this time, the OIS-x carrier 310 may move in the x-axis direction together with the OIS-x magnet 610. Furthermore, the OIS-y carrier 410 and the lens may move in the x-axis direction together with the OIS-x carrier 310. More specifically, when a forward current is applied to the OIS-x coil 620, the OIS-x magnet 610, the OIS-x carrier 310, the OIS-y carrier 410, and the lens may move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 620, the OIS-x magnet 610, the OIS-x carrier 310, the OIS-y carrier 410, and the lens may move in the other direction on the x-axis.

[0206] When a current is applied to the OIS-y coil 720, electromagnetic interaction between the OIS-y coil 720 and the OIS-y magnet 710 may cause the OIS-y magnet 710 to move in the y-axis direction, which is perpendicular to the optical axis (see B in FIG. 32 ). At this time, the OIS-y carrier 410 may move in the y-axis direction together with the OIS-y magnet 710. Furthermore, the lens may move in the y-axis direction together with the OIS-y carrier 410. More specifically, when a forward current is applied to the OIS-y coil 720, the OIS-y magnet 710, the OIS-y carrier 410, and the lens may move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 720, the OIS-y magnet 710, the OIS-y carrier 410, and the lens may move in the other direction on the y-axis.

[0207] Meanwhile, the OIS-x sensor 630 can sense the strength of the magnetic field of the OIS-x magnet 610 to detect the amount of movement and position of the OIS-x magnet 610. The amount of movement and position detected by the OIS-x sensor 630 may be used for x-axis direction image stabilization feedback control. The OIS-y sensor 730 can sense the strength of the magnetic field of the OIS-y magnet 710 to detect the amount of movement and position of the OIS-y magnet 710. The amount of movement and position detected by the OIS-y sensor 730 may be used for y-axis direction image stabilization feedback control.

[0208]

[0209] Hereinafter, a camera device according to this embodiment will be described with reference to the drawings.

[0210] FIG. 35 is an exploded perspective view of the camera device according to this embodiment.

[0211] The camera device 10A may include a camera module.

[0212] The camera device 10A may include a lens module 20. The lens module 20 may include at least one lens. The lens may be disposed at a position corresponding to the image sensor 60. The lens module 20 may include a lens and a barrel. The lens module 20 may be coupled to an OIS-y carrier 410 of the lens driving device 10. The lens module 20 may be coupled to the OIS-y carrier 410 by a screw connection and / or an adhesive. The lens module 20 may move integrally with the OIS-y carrier 410.

[0213] The camera device 10A may include a filter 30. The filter 30 can block light of a specific frequency band from entering the image sensor 60, among light passing through the lens module 20. The filter 30 can be arranged parallel to the xy plane. The filter 30 can be arranged between the lens module 20 and the image sensor 60. The filter 30 can be arranged in the sensor base 40. Alternatively, the filter 30 can be arranged in the base 110. The filter 30 can include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 60.

[0214] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens driving device 10 and the printed circuit board 50. The sensor base 40 may include a protrusion 41 on which the filter 30 is disposed. An opening may be formed in the portion of the sensor base 40 where the filter 30 is disposed so that light passing through the filter 30 can enter the image sensor 60. An adhesive member may bond or adhere the base 110 of the lens driving device 10 to the sensor base 40. The adhesive member may also serve to prevent foreign matter from entering the interior of the lens driving device 10. The adhesive member may include one or more of epoxy, a heat-curing adhesive, and an ultraviolet-curing adhesive.

[0215] The camera device 10A may include a printed circuit board (PCB) 50. The printed circuit board 50 may be a substrate or a circuit board. The lens driver 10 may be disposed on the printed circuit board 50. A sensor base 40 may be disposed between the printed circuit board 50 and the lens driver 10. The printed circuit board 50 may be electrically connected to the lens driver 10. An image sensor 60 may be disposed on the printed circuit board 50. The printed circuit board 50 may include various circuits, elements, a controller, etc. for converting an image formed on the image sensor 60 into an electrical signal and transmitting the signal to an external device.

[0216] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured to form an image when light passing through a lens and a filter 30 is incident on the image sensor 60. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. For example, the image sensor 60 may be attached to the printed circuit board 50 using surface mounting technology (SMT). For another example, the image sensor 60 may be attached to the printed circuit board 50 using flip chip technology. The image sensor 60 may be disposed so that its optical axis coincides with that of a lens. That is, the optical axis of the image sensor 60 may be aligned with the optical axis of the lens. The image sensor 60 may convert light irradiated onto an effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 may be any one of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

[0217] The camera device 10A may include a motion sensor 70. The motion sensor 70 may be mounted on the printed circuit board 50. The motion sensor 70 may be electrically connected to the control unit 80 via a circuit pattern provided on the printed circuit board 50. The motion sensor 70 may output rotational angular velocity information according to the movement of the camera device 10A. The motion sensor 70 may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0218] The camera device 10A may include a control unit 80. The control unit 80 may be disposed on the printed circuit board 50. The control unit 80 may be electrically connected to the coils 330 of the lens driving device 10. The control unit 80 may individually control the direction, strength, and amplitude of the current supplied to the coils 330. The control unit 80 may control the lens driving device 10 to perform an autofocus function and / or an image stabilization function. Furthermore, the control unit 80 may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device 10.

[0219] The camera device 10A may include a connector 90. The connector 90 may be electrically connected to the printed circuit board 50. The connector 90 may include a port for electrically connecting to an external device.

[0220]

[0221] The optical device according to this embodiment will be described below with reference to the drawings.

[0222] FIG. 34 is a perspective view of the optical device according to this embodiment, and FIG. 35 is a perspective view of the optical device according to a modified example.

[0223] The optical device 1 may include one or more of a cellular phone, a mobile phone, a portable terminal, a mobile terminal, a smartphone, a smart pad, a portable smart device, a digital camera, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistant), a PMP (Portable Multimedia Player), and a navigation system. The optical device 1 may include any device for taking images or photographs.

[0224] The optical device 1 may include a main body 20. The optical device 1 may include a camera device 10A. The camera device 10A may be disposed in the main body 20. The camera device 10A may photograph a subject. The optical device 1 may include a display. The display may be disposed in the main body 20. The display may output one or more of a video and an image photographed by the camera device 10A. The display may be disposed on a first surface of the main body 20. The camera device 10A may be disposed on one or more of the first surface of the main body 20 and a second surface opposite the first surface. As shown in FIG. 34, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 35, the camera device 10A-1 may have triple cameras arranged horizontally.

[0225]

[0226] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics of the present invention. Therefore, it should be understood that the above-described embodiments are illustrative and not limiting in any respect.

Claims

1. A fixed portion; a first moving part disposed on the fixed part; a second moving section disposed within the first moving section and including a bobbin and a guide frame; a first driving unit that moves the first moving unit in the optical axis direction; a second driving unit disposed on the first moving unit and the second moving unit and configured to move the second moving unit in the x-axis direction; a third drive unit that moves the bobbin in the y-axis direction.

2. The lens driving device according to claim 1 , wherein the first moving portion brings the bobbin into close contact with the guide frame.

3. The lens driving device according to claim 1 , wherein the first moving portion includes a yoke that brings the bobbin into close contact with the guide frame.

4. The lens driving device according to claim 1 , wherein the first moving portion includes a first yoke that brings the first moving portion into close contact with the fixed portion, and a second yoke that brings the guide frame into close contact with the first moving portion.

5. The lens driving device according to claim 4 , wherein the first moving portion includes a third yoke that brings the bobbin into close contact with the guide frame.

6. 6. The lens driving device according to claim 5, wherein the first moving portion includes a housing, and the first to third yokes are coupled to the housing.

7. the third driving unit includes a first magnet disposed on the bobbin and a first coil interacting with the first magnet, The lens driving device according to claim 1 , wherein the first coil moves together with the first moving part.

8. the second driving unit includes a second magnet disposed on the guide frame and a second coil interacting with the second magnet, The lens driving device according to claim 7 , wherein the second coil moves together with the first moving part.

9. the first driving unit includes a third magnet disposed on the fixed unit and a third coil interacting with the third magnet, The lens driving device according to claim 8 , wherein the third coil moves together with the first moving part.

10. With the base, a housing disposed on the base; a guide frame disposed within the housing; a bobbin disposed within the guide frame; a first ball disposed between the base and the housing; a second ball disposed between one side surface of the guide frame and a side surface of the housing; a third ball disposed between the side surface of the bobbin and the other side surface of the guide frame.

Images