Lens drive device, camera device and optical equipment

Abstract

This embodiment relates to a lens driving device that includes a fixed part; a first moving part disposed within the fixed part; a second moving part disposed within the first moving part; a first driving part that moves the first moving part in the optical axis direction; a second driving part that moves the second moving part in a direction perpendicular to the optical axis direction; a plate member disposed between the fixed part and the first moving part; a first ball part disposed between the plate member and the first moving part; an elastic member disposed between the fixed part and the plate member; and a second ball part disposed between the fixed part and the first moving part, wherein the elastic member presses the second ball part so that it is supported by the fixed part.

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 photographs or videos 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 according to the distance of the subject, and an image stabilization function that prevents the focus from being shaken by the user's hand.

[0004] Autofocus and image stabilization functions may be performed through electromagnetic interactions 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 increased current consumption for performing the autofocus function.

[0006] In particular, in recent years, the lens diameter has increased due to the increased pixel count of image sensors, which has resulted in an increase in the weight of the lens, further exacerbating the problem.

[0007] Furthermore, in conventional lens driving devices, the guide structure for driving the OIS-x axis and the guide structure for driving the OIS-y axis are arranged on separate layers, which increases the height of the camera device in the optical axis direction.

[0008] On the other hand, the autofocus function is performed by moving the lens in the optical axis direction relative to the image sensor, and the movement of the lens in the optical axis direction can be guided by a ball. At this time, the attractive force between the magnet and the yoke can be used to sandwich the ball between the fixed part and the moving part.

[0009] However, in this case, there is a problem that a centering force exists in the optical axis direction, and furthermore, there is a possibility that the moving part may tilt due to the contact point of the ball.

[0010] Furthermore, when a ball is used to guide the movement of a moving part for the image stabilization function, there is a problem that the ball may come off from its fixed position due to an external impact or the like.

[0011] (Patent Document 1) KR 10-2015-0118005 A Summary of the Invention [Problem to be solved by the invention]

[0012] The embodiment of the present invention provides a lens driving device that reduces current consumption for performing an autofocus function by disposing a coil, which is lighter in weight than a magnet, in a moving part.

[0013] Furthermore, by integrally forming the guide structure for driving the OIS-x axis and the guide structure for driving the OIS-y axis, a lens driving device is provided in which the height in the optical axis direction is kept to a minimum.

[0014] This embodiment provides a lens driving device that presses the ball via an elastic member so that a centering force in the optical axis direction that is generated when the ball is pressed via a yoke and a magnet is not applied.

[0015] Furthermore, the present invention provides a lens driving device in which ball guide structures are arranged diagonally to prevent rotation and tilt of the moving part.

[0016] This embodiment provides a lens driving device that minimizes separation or damage caused by external impact to the structure that guides the movement of the moving part for the image stabilization function. [Means for solving the problem]

[0017] A lens driving device according to a first embodiment of the present invention includes a fixed section; a first moving section arranged within the fixed section; a second moving section arranged within the first moving section; 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; and a guide member arranged between the first moving section and the second moving section, wherein the guide member may include a protrusion fixed to the second moving section and in contact with the first moving section.

[0018] The guide member may include a plurality of guide members spaced apart from one another, and the protruding portion of each of the plurality of guide members may contact the first moving portion at one point.

[0019] The guide member may be made of a metal member.

[0020] The protrusion of the guide member may be formed by bending a metal plate, and the opposite side of the protrusion may have a corresponding groove shape.

[0021] The guide member may include a plate portion disposed on the second moving portion, the protrusion portion being integrally formed with the plate portion, and the protrusion portion protruding from the plate portion toward the second moving portion.

[0022] The plate portion of the guide member may be formed integrally with the second moving portion.

[0023] The first moving portion may include a plate member, and the protrusion of the guide member may contact the plate member.

[0024] The guide member may be formed of the same material as the plate member.

[0025] The lens driving device includes an elastic member that presses the guide member toward the first moving portion.

[0026] The lens driving device may include a first elastic member coupled to the first moving portion; a second elastic member coupled to the second moving portion; and a wire connecting the first elastic member and the second elastic member, and the protrusion of the guide member may overlap with the wire in a first direction perpendicular to the optical axis direction.

[0027] The protrusion of the guide member may overlap the second elastic member in a second direction perpendicular to the optical axis direction.

[0028] The first direction may be the same as the second direction.

[0029] The first driving unit may include a first magnet arranged on the fixed unit and a first coil arranged on the first moving unit, and in a direction perpendicular to the optical axis direction, the first coil may include a portion arranged between the first magnet and the protrusion of the guide member.

[0030] A lens driving device according to a first embodiment of the present invention includes a fixed section; a first moving section disposed within the fixed section; a second moving section disposed within the first moving section; a first driving section that moves the first moving section in an optical axis direction; a second driving section that moves the second moving section in a direction perpendicular to the optical axis direction; and a guide member disposed between the first moving section and the second moving section, wherein the guide member may include a protrusion fixed to the first moving section and in contact with the second moving section.

[0031] A lens driving device according to a first embodiment of the present invention includes a fixed portion; a moving portion disposed within the fixed portion; a driving portion that moves the moving portion in a direction perpendicular to the optical axis direction; and a guide member disposed between the fixed portion and the moving portion, and the guide member may include a protrusion that is fixed to the moving portion and contacts the fixed portion.

[0032] The camera device according to the first embodiment of the present invention may include a printed circuit board; an image sensor disposed on the printed circuit board; the lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0033] The optical device according to the first embodiment of the present invention 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.

[0034] A lens driving device according to a second embodiment of the present invention includes a fixed portion; a first moving portion disposed within the fixed portion; a second moving portion disposed within the first moving portion; a first driving portion that moves the first moving portion in the optical axis direction; a second driving portion that moves the second moving portion in a direction perpendicular to the optical axis direction; a plate member disposed between the fixed portion and the first moving portion; a first ball portion disposed between the plate member and the first moving portion; an elastic member disposed between the fixed portion and the plate member; and a second ball portion disposed between the fixed portion and the first moving portion, wherein the elastic member may apply pressure to the second ball portion so as to be supported by the fixed portion.

[0035] The fixed portion may include a base and a first protrusion and a second protrusion protruding from the base in the optical axis direction, the first movable portion may include a first carrier and a third protrusion protruding from the first carrier in a first direction perpendicular to the optical axis direction, the first ball portion may be disposed between the plate and the first protrusion, and the second ball portion may be disposed between the second protrusion and the third protrusion.

[0036] The first protrusion and the second protrusion may be disposed in a first corner region of the base.

[0037] A lens driving device according to a second embodiment of the present invention may include a fixed portion; a first moving portion disposed within the fixed portion; a second moving portion disposed within the first moving portion; a first driving portion that moves the first moving portion in the optical axis direction; a second driving portion that moves the second moving portion in a direction perpendicular to the optical axis direction; a first ball disposed between the fixed portion and the first moving portion; a plate member that contacts the first ball; and an elastic member that presses the plate member toward the first ball.

[0038] The lens driving device may include a second ball disposed between the first moving portion and the second moving portion.

[0039] The fixing part may include a first ball including the first ball portion and the second ball portion, and the first ball may include a first unit ball arranged in a first corner region of the fixing part when viewed from above, and a second unit ball arranged in a second corner region diagonally opposite the first corner region of the fixing part.

[0040] The second balls may include third and fourth unit balls spaced apart from each other when viewed from above and disposed between the first and second unit balls in the diagonal direction.

[0041] The first ball may include a ball that overlaps with the second ball in a direction perpendicular to the optical axis direction.

[0042] The first driving unit may include a first magnet disposed on the fixed unit and a first coil disposed on the first moving unit.

[0043] The lens driving device may include a first substrate disposed on the first moving portion; and a second substrate connecting the fixed portion and the first substrate, and the first coil may be disposed on the first substrate.

[0044] The second driving unit may include a second magnet and a second coil that move the second moving unit in a first direction perpendicular to the optical axis direction, and a third magnet and a third coil that move the second moving unit in a second direction perpendicular to the optical axis direction and the first direction, and the second coil and the third coil may be arranged on the first substrate.

[0045] The first driving unit may include a substrate disposed on the fixed unit, a first coil disposed on the substrate, and a first magnet disposed on the first moving unit.

[0046] The plate member may be disposed between the first ball portion and the fixed portion, and the elastic member may be disposed between the plate member and the fixed portion and pressurize the plate member in the opposite direction to the fixed portion.

[0047] The fixed portion may include an outer wall portion and a pillar portion arranged inside the outer wall portion, and the first ball may include a first unit ball arranged between the first moving portion and the pillar portion of the fixed portion, and a second unit ball arranged between the first moving portion and the outer wall portion of the fixed portion.

[0048] The plate member may be disposed between the first unit ball and the pillar portion of the fixed portion, and the elastic member may be disposed between the plate member and the pillar portion of the fixed portion.

[0049] The first ball portion may include a plurality of balls arranged in the optical axis direction, the plurality of balls including a first top cardboard ball arranged at the highest position and a first bottom cardboard ball arranged at the lowest position, and the height of the point at which the elastic member presses the plate member may be positioned between the height of the first top cardboard ball and the height of the first bottom cardboard ball.

[0050] A camera device according to a second embodiment of the present invention 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.

[0051] The optical device according to the second embodiment of the present invention may include a main body; the 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]

[0052] According to the first embodiment of the present invention, the coil, which is lighter in weight than the magnet, is disposed in the moving part, thereby reducing the current consumption for performing the autofocus function.

[0053] Furthermore, by integrally forming the guide structure for driving the OIS-x axis and the guide structure for driving the OIS-y axis, the height of the lens driving device in the optical axis direction can be minimized.

[0054] As a result, the height at which the camera device protrudes from the smartphone can be minimized, or the camera device can be prevented from protruding from the smartphone.

[0055] Furthermore, since there is no centering force in the optical axis direction that occurs when the ball is pressed via the yoke and magnet, i.e., there is no force returning to the centering position, the current consumed for AF drive is reduced, and the accuracy of AF drive can be improved.

[0056] Furthermore, in this embodiment, the ball guide structures are arranged diagonally, which can prevent the moving part from rotating and tilting.

[0057] Furthermore, in this embodiment, it is possible to minimize separation or damage caused by external impacts to the structure that guides the movement of the moving part for the image stabilization function. [Brief explanation of the drawings]

[0058] [Figure 1] 1 is a conceptual diagram of a lens driving device according to a first embodiment of the present invention. [Figure 2] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along the line BB in FIG. 2. [Figure 5] FIG. 5 is an enlarged view of a portion of FIG. 4. [Figure 6] FIG. 3 is a cross-sectional view taken along CC in FIG. 2. [Figure 7] FIG. 3 is a cross-sectional view taken along the line DD in FIG. 2. [Figure 8] 1 is a cross-sectional view of a lens driving device according to a first embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above. [Figure 9] 1 is an exploded perspective view of a lens driving device according to a first embodiment of the present invention. [Figure 10] 10 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention, seen from a different direction than FIG. 9. FIG. [Figure 11] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention, with a cover omitted. [Figure 12] FIG. 12 is a perspective view seen from a different direction than that of FIG. [Figure 13] 1 is a perspective view illustrating a fixing portion and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 14] 1 is a perspective view illustrating a moving unit and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 15] FIG. 15 is a bottom perspective view seen from a different direction than FIG. [Figure 16] 16 is a bottom perspective view of the state in which the cover of the AF moving unit is removed from FIG. 15. FIG. [Figure 17] FIG. 17 is a bottom perspective view of a state in which the OIS moving unit is removed from FIG. 16. [Figure 18] 18(a) is an enlarged view of a part of FIG. 17, and FIG. 18(b) is an exploded view of FIG. 18(a) with the plate member separated. [Figure 19] FIG. 17 is a bottom view of FIG. [Figure 20]1 is a perspective view illustrating an OIS moving unit and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 21] 21(a) is an enlarged view of a part of FIG. 20, and FIG. 21(b) is an exploded view of FIG. 21(a) with the guide member separated. [Figure 22] 21 is a bottom perspective view of FIG. 20 as seen from another direction. [Figure 23] FIG. 2 is a perspective view of an elastic member of the lens driving device according to the first embodiment of the present invention. [Figure 24] 1 is a plan view of a lens driving device according to a first embodiment of the present invention with a cover removed. [Figure 25] 25 is an enlarged plan view of a part of FIG. 24 with the cover omitted. [Figure 26] 1 is a cross-sectional perspective view illustrating a ball and related components of a lens driving device according to a first embodiment of the present invention. [Figure 27] 1 is a perspective view illustrating a ball and related components of a lens driving device according to a first embodiment of the present invention; [Figure 28] 1 is a perspective view illustrating a ball receiving structure of a base of a lens driving device according to a first embodiment of the present invention; [Figure 29] FIG. 29 is a perspective view illustrating the state in which the ball, the plate member, the elastic member, and the reinforcing member are arranged in FIG. 28. [Figure 30] FIG. 30 is a perspective view of FIG. 29 seen from another direction. [Figure 31] 1 is a perspective view illustrating a moving part and a ball of a lens driving device according to a first embodiment of the present invention. [Figure 32] FIG. 32 is a perspective view of FIG. 31 seen from another direction. [Figure 33] (a) is a diagram comparing the height of the ball and the pressure point when the moving part has moved upward, and (b) is a diagram comparing the height of the ball and the pressure point when the moving part has moved downward. [Figure 34] 1 is a cross-sectional perspective view illustrating an OIS guide member and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 35]1 is a cross-sectional perspective view illustrating an OIS guide member and related components that are part of a lens driving device according to a first embodiment of the present invention. FIG. [Figure 36] 36 is a diagram illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention, and is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil. [Figure 37] 37 is a diagram illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention, and is a cross-sectional view illustrating 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 38] 38 is a diagram illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention, and is a cross-sectional view illustrating a state in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction. [Figure 39] 39 is a cross-sectional view illustrating the state of the OIS moving part in the initial state where no current is applied to the OIS-x coil and the OIS-y coil, illustrating the image stabilization driving of the lens driving device according to the first embodiment of the present invention. [Figure 40] 40 is a cross-sectional view illustrating a state in which a current is applied to the OIS-x coil and the OIS moving part moves in the x-axis direction perpendicular to the optical axis, as a result of which the OIS moving part moves in the x-axis direction perpendicular to the optical axis, as a result of which the lens driving device according to the first embodiment of the present invention performs image stabilization driving. [Figure 41] 41 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil, causing the OIS moving part to move in the y-axis direction perpendicular to both the optical axis and the x-axis, when the OIS-y coil is turned on, and the image stabilization driving of the lens driving device according to the first embodiment of the present invention is performed. [Figure 42] 1 is an exploded perspective view of a camera device according to a first embodiment of the present invention. [Figure 43] 1 is a perspective view of an optical apparatus according to a first embodiment of the present invention. [Figure 44] FIG. 10 is a perspective view of an optical device according to a modified example. [Figure 45] FIG. 10 is a conceptual diagram of a lens driving device according to a second embodiment of the present invention. [Figure 46]FIG. 10 is a perspective view of a lens driving device according to a second embodiment of the present invention. [Figure 47] FIG. 47 is a cross-sectional view taken along line AA in FIG. 46. [Figure 48] FIG. 47 is a cross-sectional view taken along the line BB in FIG. 46. [Figure 49] FIG. 49 is an enlarged view of a portion of FIG. 48. [Figure 50] FIG. 47 is a cross-sectional view taken along CC in FIG. 46. [Figure 51] FIG. 47 is a cross-sectional view taken along the line DD in FIG. 46. [Figure 52] FIG. 10 is a cross-sectional view of a lens driving device according to a second embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above. [Figure 53] FIG. 10 is an exploded perspective view of a lens driving device according to a second embodiment of the present invention. [Figure 54] FIG. 54 is an exploded perspective view of the lens driving device according to the second embodiment of the present invention, seen from a direction different from that of FIG. 53. [Figure 55] FIG. 10 is a perspective view of a lens driving device according to a second embodiment of the present invention, with the cover omitted. [Figure 56] FIG. 56 is a perspective view seen from a different direction than FIG. 55. [Figure 57] FIG. 10 is a perspective view illustrating a fixing portion and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 58] FIG. 10 is a perspective view illustrating a moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 59] This is a bottom perspective view seen from a direction different from that of FIG. 58. [Figure 60] FIG. 60 is a bottom perspective view of the state in which the cover of the AF moving unit is removed from FIG. 59. [Figure 61] FIG. 61 is a bottom perspective view of a state in which the OIS moving unit is removed from FIG. 60. [Figure 62] FIG. 62 is an enlarged view of a portion of FIG. 61. [Figure 63] FIG. 61 is a bottom view of FIG. [Figure 64] FIG. 10 is a perspective view illustrating an OIS moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 65] FIG. 65 is an enlarged view of a portion of FIG. 64. [Figure 66] FIG. 65 is a bottom perspective view of FIG. 64 as seen from another direction. [Figure 67] FIG. 10 is a perspective view of an elastic member of a lens driving device according to a second embodiment of the present invention. [Figure 68] FIG. 10 is a plan view of a lens driving device according to a second embodiment of the present invention with the cover removed. [Figure 69] FIG. 69 is an enlarged plan view of a portion of FIG. 68 with the cover omitted. [Figure 70] FIG. 10 is a cross-sectional perspective view illustrating a ball and related components of a lens driving device according to a second embodiment of the present invention. [Figure 71] FIG. 10 is a perspective view illustrating a ball and related components of a lens driving device according to a second embodiment of the present invention. [Figure 72] FIG. 10 is a perspective view illustrating a ball receiving structure of a base of a lens driving device according to a second embodiment of the present invention. [Figure 73] FIG. 73 is a perspective view illustrating the state in which the ball, the plate member, the elastic member, and the reinforcing member are arranged in FIG. 72. [Figure 74] FIG. 74 is a perspective view of FIG. 73 seen from another direction. [Figure 75] FIG. 10 is a perspective view illustrating a moving part and a ball of a lens driving device according to a second embodiment of the present invention. [Figure 76] FIG. 76 is a perspective view of FIG. 75 seen from another direction. [Figure 77] (a) is a diagram comparing the height of the ball and the pressure point when the moving part has moved upward, and (b) is a diagram comparing the height of the ball and the pressure point when the moving part has moved downward. [Figure 78] FIG. 10 is a cross-sectional view of a lens driving device according to a modified example, cut in a direction perpendicular to the optical axis and viewed from above. [Figure 79] FIG. 10 is an exploded perspective view of a partial configuration of a lens driving device according to a modified example. [Figure 80]80 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, illustrating autofocus driving of the lens driving device according to the second embodiment of the present invention. [Figure 81] 81 is a cross-sectional view illustrating the state in which a forward current is applied to the AF coil and the moving part moves upward in the optical axis direction, illustrating the autofocus driving of the lens driving device according to the second embodiment of the present invention. [Figure 82] 82 is a cross-sectional view illustrating the state in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction, illustrating the autofocus driving of the lens driving device according to the second embodiment of the present invention. [Figure 83] 83 is a cross-sectional view illustrating the state of the OIS moving part in the initial state where no current is applied to the OIS-x coil and the OIS-y coil, illustrating the image stabilization driving of the lens driving device according to the second embodiment of the present invention. [Figure 84] 84 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil and the OIS moving part moves in the x-axis direction perpendicular to the optical axis, as a result of which the OIS moving part moves in the x-axis direction perpendicular to the optical axis, as a result of which the OIS moving part moves in the x-axis direction. [Figure 85] 85 is a diagram illustrating the image stabilization drive of the lens driving device according to the second embodiment of the present invention. Fig. 85 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the OIS moving part moves in the y-axis direction perpendicular to both the optical axis and the x-axis. [Figure 86] FIG. 10 is an exploded perspective view of a camera device according to a second embodiment of the present invention. [Figure 87] FIG. 10 is a perspective view of an optical apparatus according to a second embodiment of the present invention. [Figure 88] FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0059] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0060] However, the technical concept of the present invention is not limited to the described embodiments and can be realized in various different forms, and one or more of the components between the embodiments can be arbitrarily combined or substituted within the scope of the technical concept of the present invention.

[0061] Furthermore, unless otherwise clearly defined and described, terms (including technical and scientific terms) used in the examples of the present invention can be interpreted as meanings that are commonly understood by a person having ordinary knowledge in the technical field to which the present invention belongs, and commonly used terms, such as predefined terms, can be interpreted in light of the contextual meaning of the relevant technology.

[0062] Furthermore, the terms used in the examples of the present invention are intended to describe the examples and are not intended to limit the present invention.

[0063] In this specification, the singular can also include the plural unless otherwise specified in the context, and when it is stated as "A and at least one (or one or more) of B and C," it can include one or more of all possible combinations of A, B, and C.

[0064] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. are used to distinguish the components from other components, and the terms do not limit the nature, order, or sequence of the components.

[0065] It should be noted that when a component is described as being "coupled," "coupled," or "connected" to another component, it can include not only the case where the component is directly "coupled," "coupled," or "connected" to the other component, but also the case where the component is "coupled," "coupled," or "connected" by another component between the component and the other component.

[0066] Furthermore, when described as being formed or disposed "above" or "below" each component, "above" or "below" includes not only the case where the 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 expressed as "above" or "below," it can include not only the meaning of the upward direction but also the meaning of the downward direction relative to one component.

[0067] The "optical axis (see OA in FIG. 29) direction" used below is defined as the optical axis direction of the lens and / or image sensor connected to the lens driving device.

[0068] 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."

[0069] The "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 according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. Furthermore, the "autofocus feedback (CLAF, closed-loop autofocus) control" is defined as a function that senses the distance between the image sensor and the lens and controls the lens position in real time with feedback to improve the accuracy of focus adjustment.

[0070] As used below, "optical image stabilization (OIS) function" 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 camera shake. Furthermore, "closed-loop auto focus (CLAF) control" is defined as a function that senses the position of the lens relative to the image sensor and provides feedback (feedback) to control the lens position in real time to improve the accuracy of camera shake correction.

[0071] Hereinafter, one of the "AF movement section 200" and the "OIS movement section 300" may be referred to as a "first movement section" and the other as a "second movement section."

[0072] Hereinafter, one of the "AF driving section 400" and the "OIS driving section" may be referred to as the "first driving section" and the other as the "second driving section."

[0073] Hereinafter, the "AF driver 400," "OIS-x driver 500," and "OIS-y driver 600" may be referred to as the "first driver," "second driver," and "third driver," respectively.

[0074] Hereinafter, the "AF magnet 410," "OIS-x magnet 510," and "OIS-y magnet 610" may be referred to as the "first magnet," "second magnet," and "third magnet," respectively.

[0075] Hereinafter, the "AF coil 420," "OIS-x coil 520," and "OIS-y coil 620" may be referred to as the "first coil," "second coil," and "third coil," respectively.

[0076] Hereinafter, the "AF magnet 410," "OIS-x magnet 510," "OIS-y magnet 610," "AF coil 420," "OIS-x coil 520," and "OIS-y coil 620" may be referred to as the "first drive unit," "second drive unit," "third drive unit," "fourth drive unit," "fifth drive unit," and "sixth drive unit," respectively.

[0077] Hereinafter, one of the "inner substrate 710" and the "outer substrate 720" may be referred to as the "first substrate" and the other as the "second substrate."

[0078] Hereinafter, one of the "holder member 220" and the "preload member 230" may be referred to as the "first member," and the other as the "second member." Furthermore, hereafter, one of the "holder member 220" and the "preload member 230" may be referred to as the "first housing," and the other as the "second housing."

[0079] Hereinafter, one of the "upper elastic member 830" and the "lower elastic member 840" may be referred to as a "first elastic member" and the other as a "second elastic member."

[0080] Hereinafter, the "upper elastic member 830," the "lower elastic member 840," and the "wire 850" may be referred to as the "first support member," the "second support member," and the "third support member," respectively.

[0081] Hereinafter, the "AF sensor 430," "OIS-x sensor 530," and "OIS-y sensor 630" may be referred to as the "first sensor," "second sensor," and "third sensor," respectively.

[0082] Hereinafter, the "AF yoke 440," "OIS-x yoke 540," and "OIS-y yoke 640" may be referred to as the "first yoke," "second yoke," and "third yoke," respectively.

[0083] Hereinafter, the individual balls of the AF guide ball 810 may be referred to as the "first unit ball," the "second unit ball," the "third unit ball," and the "fourth unit ball," respectively. Furthermore, the term "nth unit ball" can be used to refer to individual balls such as the "fifth unit ball," the "sixth unit ball," etc.

[0084] Hereinafter, one of the "pillar portion 111" and the "external wall portion 112" may be referred to as the "first portion" and the other as the "second portion."

[0085] Hereinafter, one of the "inner groove 111-1" and the "outer groove 112-1" may be referred to as a "first groove," and the other may be referred to as a "second groove."

[0086] Hereinafter, one of the "inner groove 224-1" and the "outer groove 224-2" may be referred to as the "first groove" and the other as the "second groove."

[0087] Hereinafter, one of the "inner ball 811" and the "outer ball 812" may be referred to as a "first unit ball" and the other as a "second unit ball."

[0088] Hereinafter, one of the "inner top corrugated box 811-1" and the "outer top corrugated box 812-1" may be referred to as the "first top corrugated box" and the other may be referred to as the "second top corrugated box."

[0089] Hereinafter, one of the "inner lowest corrugated box 811-2" and the "outer lowest corrugated box 812-2" may be referred to as the "first lowest corrugated box" and the other as the "second lowest corrugated box."

[0090] Hereinafter, the "upper bent portion 921", the "lower bent portion 922", and the "connecting bent portion 923" may be referred to as the "first bent portion", the "second bent portion", and the "third bent portion", respectively.

[0091] Hereinafter, one of the "AF movement unit 1200" and the "OIS movement unit 1300" may be referred to as a "first movement unit" and the other as a "second movement unit."

[0092] Hereinafter, one of the "AF driver 1400" and the "OIS driver" may be referred to as the "first driver" and the other as the "second driver."

[0093] Hereinafter, the "AF driver 1400," "OIS-x driver 1500," and "OIS-y driver 1600" may be referred to as the "first driver," "second driver," and "third driver," respectively.

[0094] Hereinafter, the "AF magnet 1410," "OIS-x magnet 1510," and "OIS-y magnet 1610" may be referred to as the "first magnet," "second magnet," and "third magnet," respectively.

[0095] Hereinafter, the "AF coil 1420," "OIS-x coil 1520," and "OIS-y coil 1620" may be referred to as the "first coil," "second coil," and "third coil," respectively.

[0096] Hereinafter, the "AF magnet 1410," "OIS-x magnet 1510," "OIS-y magnet 1610," "AF coil 1420," "OIS-x coil 1520," and "OIS-y coil 1620" may be referred to as the "first drive unit," "second drive unit," "third drive unit," "fourth drive unit," "fifth drive unit," and "sixth drive unit," respectively.

[0097] Hereinafter, one of the "inner substrate 1710" and the "outer substrate 1720" may be referred to as the "first substrate" and the other as the "second substrate."

[0098] Hereinafter, one of the "AF guide ball 1810" and the "OIS guide ball 1820" may be referred to as the "first ball" and the other as the "second ball."

[0099] Hereinafter, one of the "holder member 1220" and the "preload member 1230" may be referred to as the "first member," and the other as the "second member." Furthermore, hereafter, one of the "holder member 1220" and the "preload member 1230" may be referred to as the "first housing," and the other as the "second housing."

[0100] Hereinafter, one of the "upper elastic member 1830" and the "lower elastic member 1840" may be referred to as the "first elastic member" and the other as the "second elastic member."

[0101] Hereinafter, the "upper elastic member 1830," "lower elastic member 1840," and "wire 1850" may be referred to as the "first support member," "second support member," and "third support member," respectively.

[0102] Hereinafter, the "AF sensor 1430," the "OIS-x sensor 1530," and the "OIS-y sensor 1630" may be referred to as the "first sensor," the "second sensor," and the "third sensor," respectively.

[0103] Hereinafter, the "AF yoke 1440," "OIS-x yoke 1540," and "OIS-y yoke 1640" may be referred to as the "first yoke," "second yoke," and "third yoke," respectively.

[0104] Hereinafter, the individual balls of the AF guide balls 1810 and the individual balls of the OIS guide balls 1820 may be referred to as the "first unit ball," the "second unit ball," the "third unit ball," the "fourth unit ball," the "fifth unit ball," the "sixth unit ball," etc., and the term "nth unit ball" can be used to refer to the individual balls.

[0105] Hereinafter, one of the "pillar portion 1111" and the "external wall portion 1112" may be referred to as the "first portion," and the other as the "second portion." Alternatively, hereafter, one of the "pillar portion 1111" and the "external wall portion 1112" may be referred to as the "first pillar," and the other as the "second pillar." Alternatively, hereafter, one of the "pillar portion 1111" and the "external wall portion 1112" may be referred to as the "first protrusion," and the other as the "second protrusion."

[0106] Hereinafter, one of the "inner groove 1111-1" and the "outer groove 1112-1" may be referred to as the "first groove" and the other as the "second groove."

[0107] Hereinafter, one of the "inner groove 1224-1" and the "outer groove 1224-2" may be referred to as the "first groove" and the other as the "second groove."

[0108] Hereinafter, one of the “inner ball 1811” and the “outer ball 1812” may be referred to as the “first unit ball,” and the other may be referred to as the “second unit ball.” Alternatively, hereafter, one of the “inner ball 1811” and the “outer ball 1812” may be referred to as the “first ball portion,” and the other may be referred to as the “second ball portion.”

[0109] Hereinafter, one of the "inner top corrugated cardboard 1811-1" and the "outer top corrugated cardboard 1812-1" may be referred to as the "first top corrugated cardboard" and the other may be referred to as the "second top corrugated cardboard."

[0110] Hereinafter, one of the "inner lowest corrugated box 1811-2" and the "outer lowest corrugated box 1812-2" may be referred to as the "first lowest corrugated box" and the other may be referred to as the "second lowest corrugated box."

[0111] Hereinafter, the "upper folding portion 1921," "lower folding portion 1922," and "connecting folding portion 1923" may be referred to as the "first folding portion," "second folding portion," and "third folding portion," respectively.

[0112] The configuration of a lens driving device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0113] FIG. 1 is a conceptual diagram of a lens driving device according to a first embodiment of the present invention. FIG. 2 is a perspective view of the lens driving device according to the first embodiment of the present invention. 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 an enlarged view of a partial area of ​​FIG. 4. FIG. 6 is a cross-sectional view taken along line CC in FIG. 2. FIG. 7 is a cross-sectional view taken along line DD in FIG. 2. FIG. 8 is a cross-sectional view of the lens driving device according to the first embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above. FIG. 9 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention. FIG. 10 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention, viewed from a direction different from that of FIG. 9. FIG. 11 is a perspective view of the lens driving device according to the first embodiment of the present invention, with the cover omitted. FIG. 12 is a perspective view viewed from a direction different from that of FIG. 11. FIG. 13 is a perspective view illustrating a fixed portion and related components of the lens driving device according to the first embodiment of the present invention. FIG. 14 is a perspective view illustrating a moving portion and related components of the lens driving device according to the first embodiment of the present invention. FIG. 15 is a bottom perspective view viewed from a direction different from that of FIG. 14. FIG. 16 is a bottom perspective view of FIG. 15 with the cover of the AF moving unit removed. FIG. 17 is a bottom perspective view of FIG. 16 with the OIS moving unit removed. FIG. 18(a) is an enlarged view of a portion of FIG. 17, and FIG. 18(b) is an exploded view of FIG. 18(a) with the plate member separated. FIG. 19 is a bottom view of FIG. 17 seen from below. FIG. 20 is a perspective view illustrating the OIS moving unit and related components of the lens driving device according to the first embodiment of the present invention. FIG. 21(a) is an enlarged view of a portion of FIG. 20, and FIG. 21(b) is an exploded view of FIG. 21(a) with the guide member separated. FIG. 22 is a bottom perspective view of FIG. 20 seen from another direction. FIG. 23 is a perspective view of the elastic member of the lens driving device according to the first embodiment of the present invention. FIG. 24 is a plan view of the lens driving device according to the first embodiment of the present invention with the cover removed. FIG. 25 is an enlarged plan view of a portion of FIG. 24 with the cover omitted. Fig. 26 is a cross-sectional perspective view illustrating a ball and related components of the lens driving device according to the first embodiment of the present invention. Fig. 27 is a perspective view illustrating a ball and related components of the lens driving device according to the first embodiment of the present invention.FIG. 28 is a perspective view illustrating the ball receiving structure of the base of the lens driving device according to the first embodiment of the present invention. FIG. 29 is a perspective view illustrating the arrangement of the ball, plate member, elastic member, and reinforcing member in FIG. 28. FIG. 30 is a perspective view of FIG. 29 seen from another direction. FIG. 31 is a perspective view illustrating the moving unit and ball of the lens driving device according to the first embodiment of the present invention. FIG. 32 is a perspective view of FIG. 31 seen from another direction. FIG. 33(a) is a diagram comparing the heights of the ball and the pressure point when the moving unit has moved upward, and FIG. 33(b) is a diagram comparing the heights of the ball and the pressure point when the moving unit has moved downward. FIG. 34 is a cross-sectional perspective view illustrating an OIS guide member and related components of the lens driving device according to the first embodiment of the present invention. FIG. 35 is a cross-sectional perspective view illustrating the OIS guide member and related components of a portion of the lens driving device according to the first embodiment of the present invention.

[0114] 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.

[0115] 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 can move relative to the fixed part 100.

[0116] The lens driving device 10 may include a base 110. The fixed portion 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 carrier 310. The base 110 can be coupled to a cover 120. The AF carrier 210 and the OIS carrier 310 may be disposed on the base 110. The AF carrier 210 and the OIS carrier 310 may be disposed on a bottom plate portion 111 of the base 110. The AF carrier 210 and the OIS carrier 310 may be disposed within the base 110. The AF carrier 210 and the OIS carrier 310 may be disposed within a side wall portion 112 of the base 110.

[0117] The base 110 may include a lower plate portion. The lower plate portion of the base 110 can support the lower surface of the AF moving unit 200. The lower plate portion of the base 110 can support the lower surface of the AF carrier 210.

[0118] The base 110 may include a post 111. The post 111 may extend from the upper surface of the lower plate. The post 111 may be disposed inside the outer wall 112.

[0119] The base 110 may include an inner groove 111-1. The pillar portion 111 may include an inner groove 111-1. The inner groove 111-1 may be formed on the pillar portion 111. The inner groove 111-1 may be an "AF guide ball receiving groove." The AF guide ball 810 may be arranged in the inner groove 111-1. The inner ball 811 may be arranged in the inner groove 111-1. The inner groove 111-1 may be in direct contact with the AF guide ball 810. The inner groove 111-1 may be arranged in the optical axis direction. The inner groove 111-1 may include multiple grooves. The inner groove 111-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis.

[0120] The base 110 may include a step portion 111-2. The step portion 111-2 may be formed on the column portion 111. A plate member 910 may be disposed on the step portion 111-2.

[0121] The base 110 may include an outer wall portion 112. The outer wall portion 112 may be a "side portion." The outer wall portion 112 may be a "side plate." The outer wall portion 112 may be a "side wall." The outer wall portion 112 of the base 110 may extend from the upper surface of the lower plate portion.

[0122] The base 110 may include an outer groove 112-1. The outer wall portion 112 may include an outer groove 112-1. The outer groove 112-1 may be formed to face the inner groove 111-1. The outer groove 112-1 may be arranged to face the inner groove 111-1. The outer groove 112-1 may be an "AF guide ball receiving groove." The AF guide ball 810 may be arranged in the outer groove 112-1. The outer ball 812 may be arranged in the outer groove 112-1. The outer groove 112-1 may be in direct contact with the AF guide ball 810. The outer groove 112-1 may be arranged in the optical axis direction. The outer groove 112-1 may include multiple grooves. The outer groove 112-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis. The outer groove 112-1 may be disposed on the opposite side of the inner groove 111-1. The outer groove 112-1 may be formed in a shape corresponding to the inner groove 111-1. The outer groove 112-1 and the inner groove 111-1 may be formed to have the same length in the optical axis direction.

[0123] The base 110 may include a protrusion 114. The protrusion 114 may protrude outward. The connecting portions 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 even when the connecting portions 712 of the outer substrate 710 move.

[0124] The base 110 may include a step. The step may be formed at a lower end of the 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.

[0125] 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 carrier 310 therein. The cover 120 may be a shielding member. The cover 120 may be a shielding can.

[0126] The cover 120 may include an upper plate 121. The upper plate 121 may be disposed on the moving portion. The upward movement of the moving portion may be restricted by the moving portion contacting the upper plate 121. The upper plate 121 may include holes through which light passes.

[0127] 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.

[0128] 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 can be moved with respect to the fixed unit 100 by a driving unit. The moving unit can move during AF driving. The moving unit can move during OIS driving. A lens may be coupled to the moving unit.

[0129] The lens driving device 10 may include an AF movement unit 200. The AF movement unit 200 may be disposed in the fixed unit 100. The AF movement unit 200 may be disposed within the fixed unit 100. The AF movement unit 200 may be disposed on the fixed unit 100. The AF movement unit 200 may be disposed between the fixed unit 100 and the OIS movement unit 300. The AF movement unit 200 may be disposed movably on the fixed unit 100. The AF movement unit 200 can be moved in the optical axis direction relative to the fixed unit 100 by an AF drive unit 400. The AF movement unit 200 can move during AF drive.

[0130] In a modified example, the AF movement unit 200 and the AF drive unit 400 may be omitted. That is, the OIS movement unit 300 may be disposed on the fixed unit 100. Alternatively, the OIS movement unit 300 may be disposed on the fixed unit 100, and the AF movement unit 200 may be disposed within the OIS movement unit 300.

[0131] The lens driving device 10 may include an AF carrier 210. The AF movement unit 200 may include the 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 carrier 310. The AF carrier 210 may be disposed so as to be movable in the optical axis direction.

[0132] The AF carrier 210 may include a frame, a first upper plate, and a second upper plate. In this case, the frame may be a main body. The frame may be a holder member 220. The first upper plate may be a metal member 225. The second upper plate may be a preload member 230. The AF carrier 210 may be a housing. The housing may include a first housing and a second housing. In this case, the first housing may include the holder member 220, and the second housing may include the preload member 230. The OIS carrier 310 may be a bobbin. The OIS guide member 820 may be disposed between the housing and the bobbin. The AF guide ball 810 may be disposed between a side surface of the housing and the cover 120. The AF guide ball 810 may be disposed between a side surface of the housing and the base or a pillar of the base.

[0133] The lens driving device 10 may include a holder member 220. The AF carrier 210 may include the holder member 220. The holder member 220 may be formed separately from the preload member 230. A lower elastic member 840 may be coupled to the holder member 220.

[0134] The AF carrier 210 may include an upper plate. The upper plate may be disposed on the OIS carrier 310. The upper plate may be disposed between the OIS carrier 310 and the upper plate 121 of the cover 120. The upper plate may be disposed on the OIS moving part 300.

[0135] The AF carrier 210 may include a hole. The holder member 220 may include a hole. The upper plate of the holder member 220 may include a hole. The hole may be formed in the upper plate of the holder member 220. The hole may be open inward. The preload member 230 may be inserted into the hole. The protrusion 231 of the preload member 230 may be inserted into the hole. The hole may be formed as a groove. The hole may be replaced by a groove. That is, as a modified example, the AF carrier 210 may include a groove into which the protrusion 231 of the preload member 230 is inserted.

[0136] The AF carrier 210 may include a sidewall. The sidewall may extend downward from the upper plate. An inner substrate 720 may be disposed on the sidewall. The AF coil 420 may be disposed on the sidewall. An OIS-x coil 520 may be disposed on the sidewall. An OIS-y coil 620 may be disposed on the sidewall. The sidewall may include a groove for avoiding the coil. The sidewall may include a plurality of sidewalls. The sidewall may include four sidewalls. The sidewalls may include a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall and a fourth sidewall disposed opposite to each other.

[0137] The AF carrier 210 may include an inner groove 224-1. The holder member 220 may include an inner groove 224-1. The inner groove 224-1 may be an "AF guide ball receiving groove." An AF guide ball 810 may be arranged in the inner groove 224-1. An inner ball 811 may be arranged in the inner groove 224-1. The inner groove 224-1 may be in direct contact with the AF guide ball 810. The inner groove 224-1 may be arranged in the optical axis direction. The inner groove 224-1 can guide the AF guide ball 810 to move in the optical axis direction. The inner groove 224-1 may include multiple grooves. The inner groove 224-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis.

[0138] The AF carrier 210 may include an outer groove 224-2. The holder member 220 may include an outer groove 224-2. The outer groove 224-2 may be an "AF guide ball receiving groove." An AF guide ball 810 may be disposed in the outer groove 224-2. An outer ball 812 may be disposed in the outer groove 224-2. The outer groove 224-2 may be in direct contact with the AF guide ball 810. The outer groove 224-2 may be disposed in the optical axis direction. The outer groove 224-2 can guide the AF guide ball 810 to move in the optical axis direction. The outer groove 224-2 may include multiple grooves. The outer groove 224-2 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally relative to each other with respect to the optical axis. The outer groove 224-2 may be disposed opposite the inner groove 224-1. The outer groove 224-2 may be formed to have a shape corresponding to that of the inner groove 224-1. The outer groove 224-2 and the inner groove 224-1 may be formed to have the same length in the optical axis direction.

[0139] The AF carrier 210 may include a metal member 225. The holder member 220 may include a metal member 225. The metal member 225 may be insert-injected into the holder member 220. At least a portion of the metal member 225 may be disposed on the upper surface of the holder member 220. The metal member 225 may be disposed to reinforce the strength of the holder member 220.

[0140] The AF carrier 210 may include a protrusion 226. The holder member 220 may include a protrusion 226. The protrusion 226 may be formed on an outer surface of the AF carrier 210. The protrusion 226 may protrude outward from the AF carrier 210. Connecting portions 712 may be arranged on the upper and lower surfaces of the protrusion 226.

[0141] The lens driving device 10 may include a preload member 230. The AF carrier 210 may include a preload member 230. The preload member 230 can be coupled to an upper surface of the holder member 220. The preload member 230 can be coupled to the holder member 220. The preload member 230 may be inserted into the holder member 220 from above and coupled to it. The preload member 230 can apply pressure to the OIS guide member 820. The preload member 230 may be in contact with the OIS guide member 820. The preload member 230 may be in direct contact with the OIS guide member 820. The preload member 230 can be coupled to the holder member 220 and apply pressure to the OIS guide member 820.

[0142] The AF carrier 210 may include a protrusion 231. The preload member 230 may include a protrusion 231. The protrusion 231 can be coupled to a hole in the holder member 220. The protrusion 231 of the preload member 230 may be inserted into the hole in the holder member 220 from above. The protrusion 231 of the preload member 230 may be disposed in the hole in the holder member 220. At least a portion of the protrusion 231 of the preload member 230 may be disposed in the hole in the holder member 220. The OIS guide member 820 may be disposed at a lower end of the protrusion 231 of the preload member 230. The protrusion 231 may include multiple protrusions. The protrusion 231 may include four protrusions.

[0143] The AF carrier 210 may include a groove 232. The preload member 230 may include a groove 232. The groove 232 may be a "plate member accommodating groove." The groove 232 may be formed in the protruding portion 231. The groove 232 may be formed on the lower surface of the protruding portion 231. The groove 232 may be formed at an end of the protruding portion 231. The groove 232 may be formed in a concave shape on the lower surface of the protruding portion 231. A plate member 825 may be disposed in the groove 232. The groove 232 may be in direct contact with the plate member 825. At this time, the OIS guide member 820 may be in contact with the plate member 825.

[0144] However, as a modified example, the plate member 825 may be omitted. In this case, the groove 232 may include a flat bottom surface. The OIS guide member 820 may contact the bottom surface of the groove 232 at one point. That is, the groove 232 may include a flat bottom surface, and the OIS guide member 820 may contact the flat surface at one point. Alternatively, the bottom surface of the groove 232 may include at least three flat surfaces that are arranged at an angle to one another. In this case, the OIS guide member 820 may contact the bottom surface of the groove 232 at three points.

[0145] The lens driving device 10 may include a cover 240. The AF movement unit 200 may include a cover 240. The cover 240 may be coupled to the AF carrier 210. The cover 240 may be coupled to the underside of the AF carrier 210. The cover 240 may be coupled to the underside of the AF carrier 210. The cover 240 may include a hook. The hook of the cover 240 may be coupled to the AF carrier 210. The hook of the cover 240 may protrude upward and be coupled to the side of the AF carrier 210.

[0146] The lens driving device 10 may include an OIS moving unit 300. The OIS moving unit 300 may be disposed in the fixed unit 100. The OIS moving unit 300 may be disposed within the fixed unit 100. The OIS moving unit 300 may be disposed on the fixed unit 100. The OIS moving unit 300 may be disposed within the AF moving unit 200. The OIS moving unit 300 may be movably disposed. The OIS moving unit 300 can be moved in a direction perpendicular to the optical axis relative to the fixed unit 100 and the AF moving unit 200 by an OIS driving unit. The OIS moving unit 300 can be moved in the x-axis direction by an OIS-x driving unit 500. The OIS moving unit 300 can be moved in the y-axis direction by an OIS-y driving unit 600. The OIS moving unit 300 can move when the OIS is driven.

[0147] The lens driving device 10 may include an OIS carrier 310. The OIS moving unit 300 may include an OIS carrier 310. The OIS carrier 310 may be an "OIS holder." The OIS carrier 310 may be a "bobbin." The OIS carrier 310 may be disposed within the AF carrier 210. The OIS carrier 310 may be disposed within the base 110. The OIS carrier 310 may be disposed on the base 110. The OIS carrier 310 may be disposed within the cover 120. The OIS carrier 310 may be disposed so as to be movable in a direction perpendicular to the optical axis.

[0148] The OIS carrier 310 may include an outer surface. The OIS carrier 310 may include multiple side surfaces. The OIS carrier 310 may include first and second side surfaces opposite each other, and third and fourth side surfaces opposite each other. The AF coil 420 may be disposed between the first side surface of the OIS carrier 310 and the AF magnet 410. The OIS-x magnet 510 may be disposed on the third side surface of the OIS carrier 310. The OIS-y magnet 610 may be disposed on the second side surface of the OIS carrier 310.

[0149] The OIS carrier 310 may include a groove. The groove may be an "upper elastic member interference prevention groove." The groove may be formed on the upper surface of the OIS carrier 310. The groove may be formed in a concave shape on the upper surface of the OIS carrier 310. The groove may be arranged at a position corresponding to the upper elastic member 830 so as to prevent the OIS carrier 310 and the upper elastic member 830 from interfering with each other.

[0150] The OIS carrier 310 may include a groove 311. The groove 311 may be an "insert groove." An OIS guide member 820 may be disposed in the groove 311. The groove 311 may be in direct contact with the OIS guide member 820. The groove 311 may be disposed in a direction perpendicular to the optical axis. The groove 311 may be recessed in the optical axis direction. The groove 311 may include a plurality of grooves. The groove 311 may include four grooves. The OIS guide member 820 can be coupled to the groove 311. The OIS guide member 820 may be disposed in the groove 311. The OIS guide member 820 can be coupled to the groove 311. The OIS guide member 820 can be coupled to the groove 311 through insert injection. The OIS guide member 820 may be fixed to the groove 311. The groove 311 may be formed on the upper surface of the OIS carrier 310.

[0151] The OIS carrier 310 may include side stoppers. The side stoppers can limit the lateral stroke of the OIS carrier 310. That is, when the OIS carrier 310 moves to its maximum extent, the side stoppers of the OIS carrier 310 may come into contact with one or more of the AF carrier 210 and the base 110. The side stoppers may be formed on the outer surface of the OIS carrier 310. The side stoppers may protrude outward from the side surfaces of the OIS carrier 310.

[0152] The OIS carrier 310 may include a protrusion 312. The protrusion 312 can be coupled to the upper elastic member 830. The protrusion 312 may be a "coupled protrusion." The upper elastic member 830 may include a hole into which the protrusion 312 of the OIS carrier 310 is inserted. The protrusion 312 may be formed on the upper surface of the OIS carrier 310.

[0153] OIS carrier 310 may include groove 313. Groove 313 may be a "lens adhesive receiving groove." Groove 313 may be formed on the inner circumferential surface of OIS carrier 310. Groove 313 may be formed in a concave shape on the inner circumferential surface of OIS carrier 310. An adhesive may be injected between the lens and OIS carrier 310 through groove 313. An adhesive for bonding the lens and OIS carrier 310 may be placed in groove 313.

[0154] The OIS carrier 310 may include a groove 314. The groove 314 may be formed in the lower surface of the OIS carrier 310. The groove 314 may be open outward.

[0155] The OIS carrier 310 may include a mounting portion 315. The mounting portion 315 may be a "magnet mounting portion." A magnet 510, 620 may be disposed in the mounting portion 315. The mounting portion 315 may be formed in a groove, for example.

[0156] The OIS carrier 310 may include a lower stopper 316. The lower stopper 316 may be formed on a lower surface of the OIS carrier 310. The lower stopper 316 may protrude downward from the lower surface of the OIS carrier 310. The lower stopper 316 can limit the downward movement of the OIS carrier 310 through contact with the AF carrier 210 or the base 110.

[0157] Hereinafter, the "groove 311," "groove 313," and "groove 314" of the OIS carrier 310 may be referred to as the "first groove," "second groove," and "third groove," respectively.

[0158] 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 400. The driving unit may include an OIS driving unit. The driving unit may include an OIS-x driving unit 500. The driving unit may include an OIS-y driving unit 600. The driving unit may include a coil and a magnet.

[0159] The lens driving device 10 may include an AF driving unit 400. The AF driving unit 400 may move the AF movement unit 200 in the optical axis direction. The AF driving unit 400 may move the AF carrier 210 in the optical axis direction. The AF driving unit 400 may move the AF carrier 210 in the optical axis direction via electromagnetic force. The AF driving unit 400 may include a coil and a magnet.

[0160] In the first embodiment of the present invention, the AF carrier 210 and the OIS carrier 310 can move in the optical axis direction due to the interaction between the AF coil 420 and the AF magnet 410. The AF coil 420, the AF carrier 210, and the OIS carrier 310 can move together in the optical axis direction.

[0161] The lens driving device 10 may include an AF magnet 410. The AF driving unit 400 may include an AF magnet 410. The AF magnet 410 may be an "AF magnet." The AF magnet 410 may be a permanent magnet. The AF magnet 410 may be disposed in the fixed unit 100. The AF magnet 410 may be disposed in the base 110. The AF magnet 410 may be disposed in the cover 120. The AF magnet 410 may be disposed on a side plate 122 of the cover 120. The AF magnet 410 may be disposed on an outer surface of the base 110. The AF magnet 410 may be disposed on an inner surface of the base 110. The AF magnet 410 may be fixed to the base 110. The AF magnet 410 may be coupled to the base 110. The AF magnet 410 may be adhered to the base 110 with an adhesive. The AF magnet 410 may be disposed within the cover 120. The AF magnet 410 can interact with the AF coil 420. The AF magnet 410 can electromagnetically interact with the AF coil 420. The AF magnet 410 may be disposed at a position corresponding to the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 may overlap with the AF coil 420 in a direction perpendicular to the optical axis.

[0162] The AF magnet 410 may be a four-pole magnet. The AF magnet 410 may include a four-pole magnetized magnet. The AF magnet 410 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 arranged spaced apart in the vertical direction, with a neutral portion being arranged between the first magnet portion and the second magnet portion.

[0163] The lens driving device 10 may include an AF coil 420. The AF driving unit 400 may include an AF coil 420. The AF coil 420 can interact with the AF magnet 410. The AF coil 420 can face the AF magnet 410. The AF coil 420 can face the AF magnet 410. The AF coil 420 may be disposed at a position corresponding to the AF magnet 410. The AF coil 420 may overlap the AF magnet 410 in a direction perpendicular to the optical axis. The AF coil 420 may be disposed on the inner substrate 720. The AF coil 420 may be disposed on the AF carrier 210. The AF coil 420 may be disposed on the AF movement unit 200.

[0164] In the first embodiment of the present invention, the AF coil 420 can move in the optical axis direction. The AF coil 420 can move in the optical axis direction through interaction with the AF magnet 410. The AF coil 420 can move together with the AF movement unit 200. The AF coil 420 can move in the optical axis direction together with the AF movement unit 200. During the AF driving process, the AF coil 420 can move in the optical axis direction together with the AF movement unit 200. The AF coil 420 may be disposed in the AF movement unit 200. The AF coil 420 may be fixed to the AF movement unit 200. The AF coil 420 can be coupled to the AF movement unit 200.

[0165] The lens driving device 10 may include an AF sensor 430. The AF driving unit 400 may include the AF sensor 430. The AF sensor 430 may be a hole sensor. The AF sensor 430 may be disposed on the inner substrate 720. The AF sensor 430 can sense the AF magnet 410. The AF sensor 430 can sense the movement of the AF magnet 410. The movement amount or position of the AF magnet 410 sensed by the AF sensor 430 can be used as feedback for autofocus driving.

[0166] The AF sensor 430 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 420. The driver IC may supply a current to the AF coil 420.

[0167] The AF sensor 430 may be disposed within the AF coil 420. The AF sensor 430 may overlap with the neutral portion of the AF magnet 410 in a direction perpendicular to the optical axis. As a modification, the AF sensor 430 may be disposed outside the AF coil 420. The AF sensor 430 may overlap with the AF coil 420 in the optical axis direction. The AF sensor 430 may overlap with the AF coil 420 in the direction perpendicular to the optical axis.

[0168] The lens driving device 10 may include an AF yoke 440. The AF yoke 440 may be disposed at a position corresponding to the AF magnet 410. An attractive force may act between the AF yoke 440 and the AF magnet 410. The attractive force between the AF yoke 440 and the AF magnet 410 may maintain the AF guide ball 810 in contact with the base 110 and the AF carrier 210. The AF yoke 440 may be disposed on the inner substrate 720. The AF yoke 440 may be disposed inside the AF coil 420.

[0169] The lens driving device 10 may include an OIS driving unit. The OIS driving unit may move the OIS moving unit 300 in a direction perpendicular to the optical axis direction. The OIS driving unit may move the OIS carrier 310 in a direction perpendicular to the optical axis. The OIS driving unit may move the OIS carrier 310 in a direction perpendicular to the optical axis via electromagnetic force.

[0170] The lens driving device 10 may include an OIS-x driving unit 500. The OIS driving unit may include the OIS-x driving unit 500. The OIS-x driving unit 500 may move the OIS carrier 310 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit 500 may move the OIS carrier 310 in the x-axis direction perpendicular to the optical axis via electromagnetic force. The OIS-x driving unit 500 may include a coil and a magnet.

[0171] In the first embodiment of the present invention, the OIS-x magnet 510 and the OIS-x coil 520 may move the OIS moving unit 300 in a first direction perpendicular to the optical axis direction. In this case, the first direction may be the x-axis direction. The interaction between the OIS-x coil 520 and the OIS-x magnet 510 allows the OIS carrier 310 to move in the x-axis direction perpendicular to the optical axis direction. The OIS-x magnet 510 and the OIS carrier 310 can move together in the x-axis direction.

[0172] The lens driving device 10 may include an OIS-x magnet 510. The OIS driving unit may include an OIS-x magnet 510. The OIS-x magnet 510 may be an "OIS-x magnet." The OIS-x magnet 510 may be a permanent magnet. The OIS-x magnet 510 may be disposed in the OIS moving unit 300. The OIS-x magnet 510 may be separated from the AF magnet 410. The OIS-x magnet 510 may be disposed in the OIS carrier 310. The OIS-x magnet 510 may be disposed on the outer surface of the OIS carrier 310. The OIS-x magnet 510 may be fixed to the OIS carrier 310. The OIS-x magnet 510 may be coupled to the OIS carrier 310. The OIS-x magnet 510 may be adhered to the OIS carrier 310 with an adhesive. The OIS-x magnet 510 may be disposed within the cover 120. The OIS-x magnet 510 can interact with the OIS-x coil 520. The OIS-x magnet 510 can electromagnetically interact with the OIS-x coil 520. The OIS-x magnet 510 may be disposed at a position corresponding to the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 may overlap with the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x magnet 510 may overlap with the OIS-x coil 520 in the x-axis direction. The OIS-x magnet 510 can move in the x-axis direction perpendicular to the optical axis.

[0173] The OIS-x magnet 510 may be a two-pole magnet. The OIS-x magnet 510 may include a two-pole magnetized magnet. The OIS-x magnet 510 may include a north pole and a south pole.

[0174] The OIS-x magnet 510 may be a two-pole magnet. The OIS-x magnet 510 may include a two-pole magnetized magnet. The OIS-x magnet 510 may include a north pole and a south pole.

[0175] The lens driving device 10 may include an OIS-x coil 520. The OIS driving unit may include an OIS-x coil 520. The OIS-x coil 520 may interact with the OIS-x magnet 510. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction perpendicular to the optical axis. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction through interaction with the OIS-x magnet 510. The OIS-x coil 520 may face the OIS-x magnet 510. The OIS-x coil 520 may be positioned corresponding to the OIS-x magnet 510. The OIS-x coil 520 may overlap the OIS-x magnet 510 in the direction perpendicular to the optical axis. The OIS-x coil 520 may be positioned on the inner substrate 720. The OIS-x coil 520 may be disposed in the AF carrier 210 .

[0176] In the first embodiment of the present invention, OIS-x coil 520 can move together with AF movement section 200. OIS-x coil 520 can move in the optical axis direction together with AF movement section 200. During the AF driving process, OIS-x coil 520 can move in the optical axis direction together with AF movement section 200. OIS-x coil 520 may be disposed in AF movement section 200. OIS-x coil 520 may be fixed to AF movement section 200. OIS-x coil 520 can be coupled to AF movement section 200.

[0177] The lens driving device 10 may include an OIS-x sensor 530. The OIS driving unit may include the OIS-x sensor 530. The OIS-x sensor 530 may be disposed on the inner substrate 720. The OIS-x sensor 530 may include a Hall sensor. The OIS-x sensor 530 can sense the OIS-x magnet 510. The OIS-x sensor 530 can sense the magnetic force of the OIS-x magnet 510. The OIS-x sensor 530 may be disposed above the OIS-x magnet 520. The OIS-x sensor 530 may overlap with the OIS-x magnet 520 in the optical axis direction. As a variant, the OIS-x sensor 530 may be disposed within the OIS-x coil 520. The OIS-x sensor 530 may overlap with the OIS-x coil 520 in the optical axis direction. OIS-x sensor 530 may overlap OIS-x coil 520 in a direction perpendicular to the optical axis. OIS-x sensor 530 may face OIS-x magnet 510. OIS-x sensor 530 may be disposed at a position corresponding to OIS-x magnet 510. OIS-x sensor 530 can sense movement of OIS-x magnet 510. The movement amount or position of OIS-x magnet 510 sensed by OIS-x sensor 530 can be used as feedback for image stabilization driving in the x-axis direction.

[0178] The lens driving device 10 may include an OIS-x yoke 540. The OIS-x yoke 540 may be disposed on the OIS-x magnet 510. The OIS-x yoke 540 may be disposed between the OIS-x magnet 510 and the OIS carrier 310. The OIS-x yoke 540 can prevent magnetic flux leakage from the OIS-x magnet 510 and improve the interaction force with the OIS-x coil 520.

[0179] The lens driving device 10 may include an OIS-y driving unit 600. The OIS driving unit may include the OIS-y driving unit 600. The OIS-y driving unit 600 may move the OIS carrier 310 in the y-axis direction perpendicular to both the optical axis and the x-axis direction. The OIS-y driving unit 600 may move the OIS carrier 310 in the y-axis direction perpendicular to both the optical axis and the x-axis direction via electromagnetic force. The OIS-y driving unit 600 may include a coil and a magnet.

[0180] In the first embodiment of the present invention, the OIS-y magnet 610 and the OIS-y coil 620 may move the OIS moving unit 300 in a second direction perpendicular to the optical axis direction and the first direction. In this case, the second direction may be the y-axis direction. The interaction between the OIS-y coil 620 and the OIS-y magnet 610 allows the OIS carrier 310 to move in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y magnet 610 and the OIS carrier 310 can move together in the y-axis direction. The OIS-y magnet 610 may overlap the AF magnet 410 in the second direction. The OIS-y magnet 610 may overlap the AF magnet 410 in the y-axis direction.

[0181] The lens driving device 10 may include an OIS-y magnet 610. The OIS-y driving unit 600 may include an OIS-y magnet 610. The OIS-y magnet 610 may be an "OIS-y magnet." The OIS-y magnet 610 may be a permanent magnet. The OIS-y magnet 520 may be disposed in the OIS moving unit 300. The OIS-y magnet 610 may be spaced apart from the OIS-x magnet 510. The OIS-y magnet 610 may be spaced apart from the AF magnet 410. The OIS-y magnet 610 may be disposed in the OIS carrier 310. The OIS-y magnet 610 may be disposed on the outer surface of the OIS carrier 310. The OIS-y magnet 610 may be fixed to the OIS carrier 310. The OIS-y magnet 610 may be coupled to the OIS carrier 310. The OIS-y magnet 610 may be adhered to the OIS carrier 310 with an adhesive. The OIS-y magnet 610 may be disposed within the cover 120. The OIS-y magnet 610 may interact with the OIS-y coil 620. The OIS-y magnet 610 may electromagnetically interact with the OIS-y coil 620. The OIS-y magnet 610 may be disposed at a position corresponding to the OIS-y coil 620. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may overlap with the OIS-y coil 620 in a direction perpendicular to the optical axis. The OIS-y magnet 610 may overlap with the OIS-y coil 620 in the y-axis direction. The OIS-y magnet 610 may move in the y-axis direction.

[0182] The OIS-y magnet 610 may be a two-pole magnet. The OIS-y magnet 610 may include a two-pole magnetized magnet. The OIS-y magnet 610 may include a north pole and a south pole.

[0183] The lens driving device 10 may include an OIS-y coil 620. The OIS-y driving unit 600 may include an OIS-y coil 620. The OIS-y coil 620 can interact with the OIS-y magnet 610. The OIS-y coil 620 may be disposed on the opposite side of the AF coil 420 with respect to the optical axis. The OIS-y coil 620 may move the OIS-y magnet 610 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis. The OIS-y coil 620 may move the OIS-y magnet 610 in the y-axis direction through interaction with the OIS-y magnet 610. The OIS-y coil 620 can face the OIS-y magnet 610. The OIS-y coil 620 may be disposed at a position corresponding to the OIS-y magnet 610. The OIS-y coil 620 may overlap the OIS-y magnet 610 in a direction perpendicular to the optical axis. The OIS-y coil 620 may be disposed on the inner substrate 720. The OIS-y coil 620 may be disposed on the AF carrier 200.

[0184] In the first embodiment of the present invention, the OIS-y coil 620 can move together with the AF movement section 200. The OIS-y coil 620 can move in the optical axis direction together with the AF movement section 200. During the AF driving process, the OIS-y coil 620 can move in the optical axis direction together with the AF movement section 200. The OIS-y coil 620 may be disposed in the AF movement section 200. The OIS-y coil 620 may be fixed to the AF movement section 200. The OIS-y coil 620 can be coupled to the AF movement section 200.

[0185] The lens driving device 10 may include an OIS-y sensor 630. The OIS-y driving unit 600 may include the OIS-y sensor 630. The OIS-y sensor 630 may be disposed on the inner substrate 720. The OIS-y sensor 630 may include a Hall sensor. The OIS-y sensor 630 can sense the OIS-y magnet 610. The OIS-y sensor 630 can sense the magnetic force of the OIS-y magnet 610. The OIS-y sensor 630 may be disposed above the OIS-y magnet 620. The OIS-y sensor 630 may overlap with the OIS-y magnet 620 in the optical axis direction. The OIS-y sensor 630 may overlap with the OIS-y magnet 620 in a direction perpendicular to the optical axis. In a modified example, the OIS-y sensor 630 may be disposed within the OIS-y coil 620. The OIS-y sensor 630 may overlap with the OIS-y coil 620 in the optical axis direction. The OIS-y sensor 630 may face the OIS-y magnet 610. The OIS-y sensor 630 may be disposed at a position corresponding to the OIS-y magnet 610. The OIS-y sensor 630 can sense the movement of the OIS-y magnet 610. The amount of movement or position of the OIS-y magnet 610 sensed by the OIS-y sensor 630 can be used as feedback for driving the image stabilization in the y-axis direction.

[0186] The lens driving device 10 may include an OIS-y yoke 640. The OIS-y yoke 640 may be disposed on the OIS-y magnet 610. The OIS-y yoke 640 may be disposed between the OIS-y magnet 610 and the OIS carrier 310. The OIS-y yoke 640 can prevent magnetic flux leakage from the OIS-y magnet 610 and improve the interaction force with the OIS-y coil 620.

[0187] When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged sequentially on an imaginary straight line. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged sequentially on an imaginary straight line. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged sequentially. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged sequentially in the y-axis direction. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may overlap in the y-axis direction.

[0188] The lens driving device 10 may include substrates 710 and 720. The substrates 710 and 720 may include flexible printed circuit boards (FPCBs). The substrates 710 and 720 may be electrically connected to the coils 420, 520, and 620. The substrates 710 and 720 may be electrically connected to the sensors 430, 530, and 630.

[0189] The lens driving device 10 may include an outer substrate 710. The outer substrate 710 may be disposed on the base 110. The outer substrate 710 may be electrically connected to the coils 420, 520, and 620. The outer substrate 710 may be electrically connected to the sensors 430, 530, and 630. The outer substrate 710 may connect the AF carrier 210 to the base 110. The outer substrate 710 may elastically connect the AF carrier 210 to the base 110. The outer substrate 710 may connect the fixed part 100 to the inner substrate 720. The outer substrate 710 may support the AF carrier 210 movably relative to the base 110. The outer substrate 710 may guide the AF carrier 210 to move in the optical axis direction relative to the base 110. The outer substrate 710 may include a flexible substrate. The outer substrate 710 may include a flexible printed circuit board (FPCB). The outer substrate 710 may include an elastic portion. The outer substrate 710 may include an elastic member. The outer substrate 710 may include an outer portion 711 disposed on the fixing portion 100 and a connecting portion 712 extending from the outer portion 711 and connecting to the inner substrate 720.

[0190] The outer substrate 710 may include an outer portion 711. The outer portion 711 may be disposed on the base 110. The outer portion 711 may be formed to wrap around the side surfaces of the base 110. The outer portion 711 may be disposed on three side surfaces of the base 110. The outer portion 711 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 711-1.

[0191] The outer substrate 710 may include a terminal 711-1. The outer portion 711 of the outer substrate 710 may include a terminal 711-1. The terminal 711-1 may be electrically connected to the terminal 712-1. The terminal 711-1 may be disposed at a lower end of the base 110. The terminal 711-1 may be coupled to the printed circuit board 50. The terminal 711-1 may be coupled to a terminal of the printed circuit board 50 via solder. The terminal 711-1 may be coupled to a terminal of the printed circuit board 50 via a conductive member. The terminal 711-1 may be coupled to a terminal of the printed circuit board 50. The terminal 711-1 may be electrically connected to a terminal of the printed circuit board 50.

[0192] The outer substrate 710 may include a connecting portion 712. The connecting portion 712 may be an "extension portion." The connecting portion 712 may be a "leg portion." The connecting portion 712 may extend from the outer portion 711. At least a portion of the connecting portion 712 can move together with the AF carrier 210. The extension portion may extend from the outer portion 711. At least a portion of the extension portion can move together with the AF carrier 210. At least a portion of the connecting portion 712 may be arranged perpendicular to the optical axis direction. The connecting portion 712 of the outer substrate 710 can be coupled to the inner substrate 720 so that the inner substrate 720 can move in the optical axis direction. At least a portion of the connecting portion 712 may be arranged parallel to the optical axis direction.

[0193] The linking portion 712 may include a plurality of linking portions. The linking portion 712 may include a first linking portion and a second linking portion. The second linking portion may be disposed below the first linking portion.

[0194] The outer substrate 710 may include a terminal 712-1. The connecting portion 712 of the outer substrate 710 may include a terminal 712-1. The terminal 712-1 may be coupled to a terminal 721-1 of the inner substrate 720. The terminal 712-1 of the outer substrate 710 may be coupled to the terminal 721-1 of the inner substrate 720 via solder. The terminal 712-1 of the outer substrate 710 may be coupled to the terminal 721-1 of the inner substrate 720 via an electrically conductive member. The terminal 712-1 of the outer substrate 710 may be coupled to the terminal 721-1 of the inner substrate 720. The terminal 712-1 of the outer substrate 710 may be electrically connected to the terminal 721-1 of the inner substrate 720.

[0195] The outer substrate 710 may include a bent portion 712-2. The bent portion 712-2 may be formed in the connecting portion 712. The bent portion 712-2 may be formed in each of the first connecting portion and the second connecting portion. The bent portion 712-2 may include a shape bent at least twice. The bent portion 712-2 may include a shape bent into a U-shape. The bent portion 712-2 may include a round shape. The bent portion 712-2 may include a portion arranged parallel to the optical axis.

[0196] Hereinafter, one of the "terminal 711-1" and the "terminal 712-1" of the outer substrate 710 may be referred to as the "first terminal" and the other as the "second terminal."

[0197] The lens driving device 10 may include an inner substrate 720. The inner substrate 720 may be electrically connected to the coils 420, 520, and 620. The inner substrate 720 may be electrically connected to the sensors 430, 530, and 630. The inner substrate 720 may be disposed in the AF movement unit 200. The inner substrate 720 may be disposed in the AF carrier 210. The inner substrate 720 may be fixed to the AF carrier 210. The inner substrate 720 can be coupled to the AF carrier 210. The inner substrate 720 may be adhered to the AF carrier 210 with an adhesive. The inner substrate 720 may include a flexible substrate. The inner substrate 720 may include a flexible printed circuit board (FPCB). The inner substrate 720 may include an elastic portion. The inner substrate 720 may include an elastic member.

[0198] The inner substrate 720 may include a side plate portion 721. The side plate portion 721 may be arranged on a side surface of the AF carrier 210. The side plate portion 721 may be arranged on an outer surface of the AF carrier 210. In another embodiment, the side plate portion 721 may be arranged on an inner surface of the AF carrier 210. The side plate portion 721 of the inner substrate 720 may include a plurality of portions. The side plate portion 721 may include first to fourth portions.

[0199] The inner substrate 720 may include a first portion. The first portion may be disposed on the AF carrier 210. The AF coil 420 may be disposed on the first portion of the inner substrate 720. The AF sensor 430 may be disposed on the first portion of the inner substrate 720. The AF yoke 440 may be disposed on the first portion of the inner substrate 720.

[0200] The inner substrate 720 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 620 may be arranged on the second portion of the inner substrate 720. The OIS-y sensor 630 may be arranged on the second portion of the inner substrate 720. More specifically, the OIS-y sensor 630 may be arranged on an upper plate portion 722 that is bent over and arranged above the second portion of the inner substrate 720. The OIS-y sensor 630 may be arranged on the lower surface of the upper plate portion 722.

[0201] Inner substrate 720 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 520 may be disposed on the third portion of inner substrate 720. OIS-x sensor 530 may be disposed on the third portion of inner substrate 720. More specifically, OIS-x sensor 530 may be disposed on an upper plate portion 722 that is bent over and disposed above the third portion of inner substrate 720. OIS-x sensor 530 may be disposed on the lower surface of upper plate portion 722.

[0202] The inner substrate 720 may include a fourth portion. The fourth portion may be disposed on the opposite side of 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.

[0203] The inner substrate 720 may include a terminal 721-1. The terminal 721-1 may be disposed on a fourth portion of the inner substrate 720. The terminal 721-1 may be electrically connected to the coils 420, 520, and 620. The terminal 721-1 may be electrically connected to the sensors 430, 530, and 630.

[0204] 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.

[0205] The lens driving device 10 may include an AF guide ball 810. The AF guide ball 810 can guide the movement of the AF movement unit 200 relative to the fixed unit 100 in the optical axis direction. 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. Alternatively, the AF guide ball 810 may be disposed between the base 110 and the AF carrier 210 in the y direction. The AF guide ball 810 may be disposed in a groove in the base 110. The AF guide ball 810 may be disposed in a groove in the AF carrier 210. The AF guide ball 810 may be spherical. The AF guide ball 810 may be made of metal. The surface of the AF guide ball 810 may be coated with grease.

[0206] 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 diagonally opposite the first corner of the base 110. The AF guide balls 810 may be arranged at each of the first and second corners of the base 110. The first and second corner regions of the fixed part 100 may be arranged diagonally opposite each other with respect to the optical axis. The AF guide balls 810 may be arranged at each of the first and second corner regions of the fixed part 100. 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 pillars of the AF carrier 210.

[0207] The AF guide ball 810 may include a first unit ball disposed in a first corner region of the fixed part 100 when viewed from above, and a second unit ball disposed in a second corner region diagonally opposite the first corner region of the fixed part 100. In this case, the OIS guide member 820 may include a first guide member and a second guide member spaced apart from each other when viewed from above and disposed between the first and second unit balls of the AF guide ball 810 in the diagonal direction.

[0208] When viewed from above, the AF guide balls 810 may include first and second unit balls arranged in a first corner region of the fixed part 100, and third and fourth unit balls arranged in a second corner region diagonally opposite the first corner region of the fixed part 100. Two sets of the AF guide balls 810 may be arranged in each corner.

[0209] The AF guide ball 810 may include a ball that overlaps with the OIS guide member 820 in a direction perpendicular to the optical axis direction. At least a portion of the AF guide ball 810 may overlap with the OIS guide member 820.

[0210] The AF guide ball 810 may include an inner ball 811. The inner ball 811 may be disposed on the pillar portion 111 of the base 110. The inner ball 811 may be disposed on the inner groove 111-1 of the base 110. The inner ball 811 may be disposed on the inner groove 224-1 of the AF carrier 210. The inner ball 811 may be disposed on the inner groove 224-1 of the AF moving unit 200. The inner ball 811 may be disposed on the inner groove 111-1 of the base 110 and the inner groove 224-1 of the AF carrier 210. The inner ball 811 may be disposed between the inner groove 111-1 of the base 110 and the inner groove 224-1 of the AF carrier 210. The inner ball 811 may be disposed between the AF moving unit 200 and the pillar portion 111 of the fixed unit 100.

[0211] The AF guide ball 810 may include an outer ball 812. The outer ball 812 may be disposed on the outer wall portion 112 of the base 110. The outer ball 812 may be disposed in the outer groove 112-1 of the base 110. The outer ball 812 may be disposed in the outer groove 224-2 of the AF carrier 210. The outer ball 812 may be disposed in the outer groove 112-1 of the base 110 and the outer groove 224-2 of the AF carrier 210. The outer ball 812 may be disposed between the outer groove 112-1 of the base 110 and the outer groove 224-2 of the AF carrier 210. The outer ball 812 may be disposed between the outer groove 112-1 of the fixed unit 100 and the outer groove 224-2 of the AF moving unit 200. The outer ball 812 may be disposed between the AF moving unit 200 and the outer wall portion 112 of the fixed unit 100.

[0212] The inner balls 811 may include a plurality of inner balls 811. The plurality of inner balls 811 may be arranged in the optical axis direction. The inner balls 811 may include four inner balls 811. The inner balls 811 may include first to fourth inner balls. Of the four inner balls 811, two may have large diameters and the remaining two may have small diameters. The two balls with large diameters may be arranged at the top and bottom. In other words, two balls with small diameters may be arranged between two balls with large diameters.

[0213] The inner balls 811 may include an inner top corrugated cardboard 811-1. The inner top corrugated cardboard 811-1 may be positioned highest among the inner balls 811. The inner top corrugated cardboard 811-1 may be positioned closest to the upper plate 121 of the cover 120 among the inner balls 811. The inner balls 811 may include an inner bottom corrugated cardboard 811-2. The inner bottom corrugated cardboard 811-2 may be positioned lowest among the inner balls 811. The inner bottom corrugated cardboard 811-2 may be positioned closest to the lower plate portion of the base 110 among the inner balls 811. The multiple inner balls 811 may include balls having a smaller diameter than each of the inner top corrugated cardboard 811-1 and the inner bottom corrugated cardboard 811-2.

[0214] The multiple inner balls 811 may include a ball arranged between the top inner cardboard box 811-1 and the bottom inner cardboard box 811-2. The outer balls 812 may include multiple outer balls 812. The multiple outer balls 812 may be arranged in the optical axis direction. The outer balls 812 may include four outer balls 812. The outer balls 812 may include first to fourth outer balls. Two of the four outer balls 812 may have large diameters and the remaining two may have small diameters. The two large diameter balls may be arranged at the top and bottom. In other words, two small diameter balls may be arranged between two large diameter balls.

[0215] The outer balls 812 may include a top outer corrugated cardboard 812-1. The top outer corrugated cardboard 812-1 may be positioned highest among the outer balls 812. The top outer corrugated cardboard 812-1 may be positioned closest to the top plate 121 of the cover 120 among the outer balls 812. The outer balls 812 may include a bottom outer corrugated cardboard 812-2. The bottom outer corrugated cardboard 812-2 may be positioned lowest among the outer balls 812. The bottom outer corrugated cardboard 812-2 may be positioned closest to the bottom plate portion of the base 110 among the outer balls 812. The multiple outer balls 812 may include balls having a smaller diameter than each of the top outer corrugated cardboard 812-1 and the bottom outer corrugated cardboard 812-2. The multiple outer balls 812 may include balls positioned between the top outer corrugated cardboard 812-1 and the bottom outer corrugated cardboard 812-2.

[0216] The AF guide ball 810 may include a plurality of balls arranged in the optical axis direction. In this case, the plurality of balls may include uppermost cardboard boxes 811-1 and 812-1 arranged at the highest position and lowermost cardboard boxes 811-2 and 812-2 arranged at the lowest position. The height of the point at which the elastic member 920 presses the plate member 910 may be located between the heights of the uppermost cardboard boxes 811-1 and 812-1 and the height of the lowermost cardboard boxes 811-2 and 812-2.

[0217] The lens driving device 10 may include an OIS guide member 820. The OIS guide member 820 may be a guide member. The OIS guide member 820 may be a guide portion. The OIS guide member 820 may be a guide plate. The OIS guide member 820 may be a guide plate. The OIS guide member 820 may be a guide structure.

[0218] The OIS guide member 820 can guide the movement of the OIS carrier 310 relative to the AF carrier 210 in a direction perpendicular to the optical axis. The OIS guide member 820 may be disposed between the AF movement unit 200 and the OIS movement unit 300. The OIS guide member 820 may be disposed between the AF carrier 210 and the OIS carrier 310. The OIS guide member 820 may be disposed between the AF carrier 210 and the OIS carrier 310 in the optical axis direction.

[0219] The OIS guide member 820 may be disposed between the preload member 230 of the AF carrier 210 and the OIS carrier 310. The OIS guide member 820 may be pressed between the AF carrier 210 and the OIS carrier 310 by the pressing forces of the elastic members 830, 840, and 850. The preload member 230 may press the OIS guide member 820 downward during the process of coupling to the holder member 220. The preload member 230 may press the OIS guide member 820 toward the OIS carrier 310 during the process of coupling to the holder member 220. At this time, the restoring forces of the elastic members 830, 840, and 850 allow the OIS carrier 310 to press the OIS guide member 820 toward the preload member 230. Thus, the OIS guide member 820 may be pressed between the preload member 230 and the OIS carrier 310.

[0220] The OIS guide member 820 can guide the movement of the OIS moving unit 300 in the x-axis and y-axis directions. The OIS guide member 820 can guide the OIS carrier 310 to move in the x-axis and y-axis directions, which are perpendicular to the optical axis direction, relative to the AF carrier 210. That is, the OIS guide member 820 can guide the OIS carrier 310 to move in the x-axis and y-axis directions. That is, the OIS guide member 820 can guide movement in both the x-axis and y-axis directions. For reference, compared to a comparative example having separate balls for guiding in the x-axis and y-axis directions, the size of the lens driving device 10 may be minimized in the first embodiment of the present invention, which has an integrated structure for guiding in the x-axis and y-axis directions. In particular, the height of the lens driving device 10 in the optical axis direction may be reduced. This may minimize the height protruding from the smartphone, i.e., shoulder height. The OIS guide member 820 may include multiple guide members. The OIS guide member 820 may include four guide members.

[0221] As a modified example, the OIS guide member 820 may be provided with a guide member for guiding the x-axis direction drive and a guide member for guiding the y-axis direction drive separately.

[0222] In the first embodiment of the present invention, the OIS guide member 820 can guide the movement of the OIS movement unit 300 in both the x-axis direction and the y-axis direction. However, in a modified example, the OIS guide member 820 may include a first member that guides the movement of the OIS movement unit 300 in the x-axis direction and a second member that guides the movement of the OIS movement unit 300 in the y-axis direction. In this case, the first member and the second member may be separated from each other. In a modified example, the OIS movement unit 300 may include an OIS-x movement unit and an OIS-y movement unit disposed within the OIS-x movement unit. The first member may be disposed between the AF movement unit 200 and the OIS-x movement unit. The second member may be disposed between the OIS-x movement unit and the OIS-y movement unit. Each of the first member and the second member may include a protrusion 822.

[0223] The OIS guide member 820 may be disposed between the AF movement unit 200 and the OIS movement unit 300. The OIS guide member 820 may be formed of a metal member. The OIS guide member 820 may be formed of metal. The OIS guide member 820 may be formed of a material such as a plate member 825. The OIS guide member 820 may be formed of a material such as a plate member 825. The OIS guide member 820 may be formed of a material such as a plate member 825. The OIS guide member 820 may have a point contact structure. The OIS guide member 820 may contact the AF movement unit 200 at one point. The OIS guide member 820 may be formed of brass. The OIS guide member 820 may be formed of phosphor bronze. The OIS guide member 820 may be formed of a copper material. The OIS guide member 820 may be formed of a material different from that of the cover 120.

[0224] The OIS guide member 820 may include a plate portion 821. The plate portion 821 may be disposed on the OIS movement portion 300. The plate portion 821 may be disposed on the OIS movement portion 300 via insert injection. The plate portion 821 may be formed integrally with the OIS movement portion 300.

[0225] The OIS guide member 820 may include a protrusion 822. The protrusion 822 may be fixed to the OIS movement section 300. The protrusion 822 may contact the AF movement section 200. The protrusion 822 may contact the AF movement section 200 at one point.

[0226] The OIS guide member 820 may include multiple OIS guide members. The OIS guide member 820 may include four OIS guide members. The OIS guide member 820 may include first to fourth OIS guide members. The four OIS guide members may be spaced apart from one another. The four OIS guide members may each include a protrusion 822. Each of the protrusions 822 of the four OIS guide members may contact the AF movement unit 200 at one point. As a result, the four OIS guide members may contact the AF movement unit 200 at four points. That is, the OIS guide member 820 and the AF movement unit 200 may contact at points corresponding to the number of OIS guide members. Furthermore, the single point of contact between the protrusion 822 of the OIS guide member 820 and the AF movement unit 200 can be recognized as a surface when enlarged. That is, the protrusion 822 of the OIS guide member 820 may contact the AF movement unit 200 in one area.

[0227] The protruding portion 822 may be formed by bending a metal plate. The protruding portion 822 may be formed integrally with the plate portion 821. The protruding portion 822 may protrude from the plate portion 821 toward the OIS moving portion 300. The protruding portion 822 may be in contact with the plate member 825. The protruding portion 822 may overlap with the wire 850 in a direction perpendicular to the optical axis direction. The protruding portion 822 may overlap with the upper elastic member 850 in a direction perpendicular to the optical axis direction. The AF coil 420 may include a portion that is disposed between the AF magnet 410 and the protruding portion 822 of the OIS guide member 820 in a direction perpendicular to the optical axis direction when viewed from above. Alternatively, when viewed in the cross-sectional view of FIG. 35, the AF coil 420 may include a portion that is disposed between the AF magnet 410 and the protruding portion 822 of the OIS guide member 820 in a direction perpendicular to the optical axis direction.

[0228] The protrusion 822 may include a curved surface. The protrusion 822 may protrude in a rounded shape. The protrusion 822 may have a curvature. The protrusion 822 may include a hemispherical shape. As a variation, the protrusion 822 may include a conical shape. As another variation, the protrusion 822 may include a trapezoidal cross-sectional shape. The protrusion 822 may be formed in an upwardly convex shape.

[0229] The opposite side of the protrusion 822 may have a corresponding groove shape. However, in a modified example, the opposite side of the protrusion 822 may be formed as a flat surface. That is, the opposite side of the protrusion 822 may have a tight shape without being recessed. Alternatively, the opposite side of the protrusion 822 may have a tight shape only partially. That is, the thickness of the protrusion 822 may be thicker than the thickness of the plate portion 821.

[0230] The lens driving device 10 may include a plate member 825. The AF movement unit 200 may include a plate member 825. The plate member 825 may be formed of a metal member. The plate member 825 may be formed of metal. The plate member 825 may be formed in a circular shape. The OIS guide member 820 may be arranged on the plate member 825. The protrusion 822 of the OIS guide member 820 may be arranged on the plate member 825. The plate member 825 may be in contact with the OIS guide member 820. The plate member 825 may be in contact with the protrusion 822 of the OIS guide member 820. The plate member 825 may be arranged on the preload member 230. The plate member 825 may be arranged on the protrusion 231 of the preload member 230. The plate member 825 may be arranged in the groove 232 of the preload member 230.

[0231] The plate member 825 may be made of brass. The plate member 825 may be made of phosphor bronze. The plate member 825 may be made of a copper material. The plate member 825 may be made of a material different from that of the cover 120.

[0232] In a modified example, the plate member 825 may be omitted. In this case, the OIS guide member 820 may be in direct contact with the preload member 230. The OIS guide member 820 may be in direct contact with the AF movement section 200.

[0233] However, when the plate member 825 is provided, the frictional force between the plate member 825 and the OIS guide member 820 can be minimized compared to the modified example. Furthermore, when the plate member 825 is provided, it can be advantageous for managing flatness. The plate member 825 may be formed of a material with which the frictional force is minimized.

[0234] In the first embodiment of the present invention, the OIS guide member 820 may be disposed in the OIS movement unit 300. In this case, the plate member 825 may be disposed in the AF movement unit 200. However, in a modified example, the OIS guide member 820 may be disposed in the AF movement unit 200. In this case, the plate member 825 may be disposed in the OIS movement unit 300. In a modified example, the OIS guide member 820 may include a protrusion 822 that is fixed to the AF movement unit 200 and comes into contact with the OIS movement unit 300. In a modified example, the OIS guide member 820 may include a protrusion 822 that is convex downward.

[0235] The lens driving device 10 may include an elastic member. The elastic member may be formed to support OIS drive. The elastic member can support movement of the OIS moving unit 300. The elastic member may be formed to pressurize the OIS guide member 820. The elastic member may be formed so that only the OIS guide member 820 guides both the OIS-x axis drive and the OIS-y axis drive. The elastic member may include a leaf spring. The elastic member may include a wire. The elastic member may have elasticity. The elastic member may be made of metal.

[0236] The elastic member can press the OIS guide member 820 toward the AF movement unit 200. The elastic member can press the OIS movement unit 300 toward the AF movement unit 200. In this case, the elastic member may include an upper elastic member 830, a lower elastic member 840, and a wire 850.

[0237] The first support member may be disposed between the fixed unit 100 and the AF moving unit 200. The first support member may guide the AF moving unit 200 to move in the optical axis direction. The second support member may be disposed between the AF moving unit 200 and the OIS moving unit 300. The second support member may guide the OIS moving unit 300 to move in a direction perpendicular to the optical axis direction. One side of the third support member may be coupled to the AF moving unit 200, and the other side may be coupled to the OIS moving unit 300.

[0238] The AF moving unit 200 may include a first elastic member. The OIS moving unit 300 may include a second elastic member. The third support member may connect the first elastic member and the second elastic member. The third support member may include a wire 850.

[0239] The lens driving device 10 may include an upper elastic member 830. The upper elastic member 830 may be an "upper spring." The upper elastic member 830 may be a leaf spring. The upper elastic member 830 may have elasticity. The upper elastic member 830 may be disposed on the OIS movement unit 300. The upper elastic member 830 can be coupled to the OIS movement unit 300. The upper elastic member 830 may be connected to the OIS movement unit 300. The upper elastic member 830 may be disposed on the upper surface of the OIS movement unit 300. The upper elastic member 830 may be disposed on the upper surface of the OIS carrier 310. The upper elastic member 830 may be disposed on the OIS carrier 310. The upper elastic member 830 may be disposed on the upper part of the OIS carrier 310. The upper elastic member 830 may be disposed on top of the OIS carrier 310. The upper elastic member 830 may be disposed perpendicular to the optical axis.

[0240] The upper elastic member 830 may include an inner portion 831. The inner portion 831 may be coupled to the OIS movement portion 300. The upper elastic member 830 may include an outer portion 832. The outer portion 832 may be coupled to the wire 850. The upper elastic member 830 may include a connecting portion 833. The connecting portion 833 may connect the inner portion 831 and the outer portion 832. The connecting portion 833 may elastically connect the inner portion 831 and the outer portion 832. The connecting portion 833 may have elasticity. The connecting portion 833 may be an elastic portion.

[0241] The inner portion 831 of the upper elastic member 830 may be positioned lower than the outer portion 832. The inner portion 831 of the upper elastic member 830 may be positioned lower than the outer portion 832 by a first distance. The reason why the inner portion 831 of the upper elastic member 830 is positioned lower than the outer portion 832 may be due to the pressure force of the preload member 230. With this configuration, the OIS guide member 820 may be maintained in contact with the preload member 230 of the AF carrier 210 and the OIS carrier 310.

[0242] The lens driving device 10 may include a lower elastic member 840. The lower elastic member 840 may be a "housing lower terminal" or a "housing lower plate." The lower elastic member 840 may be a leaf spring. The lower elastic member 840 may have elasticity. The lower elastic member 840 may be disposed on the AF movement unit 200. The lower elastic member 840 may be coupled to the AF movement unit 200. The lower elastic member 840 may be connected to the AF movement unit 200. The lower elastic member 840 may be disposed on the lower surface of the AF movement unit 200. The lower elastic member 840 may be disposed on the lower surface of the AF carrier 210. The lower elastic member 840 may be disposed on the AF carrier 210. The lower elastic member 840 may be disposed below the AF carrier 210. The lower elastic member 840 may be disposed perpendicular to the optical axis.

[0243] The lower elastic member 840 may include an outer portion 841. The outer portion 841 may be coupled to the AF moving portion 200. The lower elastic member 840 may include an inner portion 842. The inner portion 842 may be coupled to the wire 850. The lower elastic member 840 may include a connecting portion 843. The connecting portion 843 may connect the outer portion 841 and the inner portion 842. The connecting portion 843 may elastically connect the outer portion 841 and the inner portion 842. The connecting portion 843 may have elasticity. The connecting portion 843 may be an elastic portion.

[0244] The lens driving device 10 may include a wire 850. The wire 850 may be a "side elastic member". The wire 850 may be a wire. The wire 850 may be a wire spring. The wire 850 may be a suspension wire. The wire 850 may have elasticity. The wire 850 can connect the upper elastic member 830 and the lower elastic member 840. The wire 850 can elastically connect the upper elastic member 830 and the lower elastic member 840. The wire 850 may be arranged parallel to the optical axis. The wire 850 may be arranged in the optical axis direction.

[0245] The height of the point where the elastic member 920 presses the plate member 910 may be lower than the height of the lowermost ball among the inner top cardboard 811-1 and the outer top cardboard 812-1, and higher than the height of the highermost ball among the inner bottom cardboard 811-2 and the outer bottom cardboard 812-2. More specifically, when the AF moving unit 200 moves upward as shown in FIG. 33(a), the height b of the point where the elastic member 920 presses the plate member 910 may be higher than the height a of the highermost ball among the inner bottom cardboard 422 and the outer bottom cardboard 412. A gap c may exist between the heights of the two points. Furthermore, when the moving unit AF moving unit 200 moves downward as shown in FIG. 33(b), the height e of the point where the elastic member 920 presses the plate member 910 may be lower than the height d of the lowermost ball among the inner top cardboard 421 and the outer top cardboard 411. There may be a height gap f between the two points, which may prevent or minimize the generation of a moment caused by the elastic member 920 pressing the plate member 910. In other words, it may prevent the plate member 910 from tilting or coming off.

[0246] The lens driving device 10 may include a pressure member. The pressure member may be an "AF guide ball pressure member." The pressure member can pressurize the AF guide ball 810. The pressure member may be configured to pressurize the ball. The AF guide ball 810 pressed by the pressure member may be sandwiched between the fixed part 100 and the AF moving part 200. The AF guide ball 810 pressed by the pressure member may be sandwiched between the base 110 and the AF carrier 210.

[0247] The pressure member can maintain the AF guide balls 810 in contact with the fixed part 100 and the AF moving part 200. The pressure member can maintain the AF guide balls 810 in contact with the base 110 and the AF carrier 210.

[0248] The lens driving device 10 may include a plate member 910. The pressure member may include the plate member 910. The plate member 910 may be disposed on the AF guide balls 810. The plate member 910 may be in contact with the AF guide balls 810. The plate member 910 may be disposed on the elastic member 920. The plate member 910 may be disposed on the base 110. The plate member 910 may be disposed between the elastic member 920 and the AF guide balls 810. The plate member 910 can press the AF guide balls 810 toward the AF carrier 210 by the elastic member 920. The plate member 910 may be disposed between the AF guide balls 810 and the fixed part 100. The plate member 910 may be disposed between the inner ball 811 and the pillar part 111 of the fixed part 100.

[0249] The lens driving device 10 may include an elastic member 920. The pressure member may include the elastic member 920. The elastic member 920 may be a spring. The elastic member 920 may be a tapered spring. The elastic member 920 may be disposed in the fixed part 100. The elastic member 920 can press the AF guide ball 810 toward the AF moving part 200. The elastic member 920 can press the plate member 910 toward the AF guide ball 810. The elastic member 920 may be disposed between the plate member 910 and the fixed part 100. The elastic member 920 can push the plate member 910 toward the fixed part 100. The elastic member 920 can press the plate member 910 in the opposite direction to the fixed part 100. The elastic member 920 may be disposed between the plate member 910 and the pillar part 111 of the fixed part 100. The elastic member 920 may be disposed in the inner groove 111-1 of the fixed part 100.

[0250] As a modified example, the elastic member 920 may be disposed in the AF movement unit 200. In this case, the elastic member 920 can press the AF guide ball 810 toward the fixed unit 100. The elastic member 920 is disposed in one of the fixed unit 100 and the AF movement unit 200 and can press the AF guide ball 810 toward the other of the fixed unit 100 and the AF movement unit 200. The elastic member 920 can press the plate member 910. The elastic member 920 may be disposed between the plate member 910 and the base 110. The elastic member 920 may be disposed between the AF guide ball 810 and the base 110. The elastic member 920 may be disposed in the base 110. The elastic member 920 may be disposed in the inner groove 111-1 of the base 110. The elastic member 920 can press the AF guide ball 810 toward the AF carrier 210. This allows the AF guide balls 810 to maintain contact between the plate member 910 and the AF carrier 210.

[0251] The elastic member 920 may include a folded portion. The folded portion may include a folded shape. The folded portion may include a plurality of folded portions. The folded portion may include three folded portions. The elastic member 920 may be folded at least three times. The elastic member 920 may include an upper folded portion 921. The elastic member 920 may include a lower folded portion 922. The elastic member 920 may include a connecting folded portion 923. The connecting folded portion 923 may be disposed between the upper folded portion 921 and the lower folded portion 922. The upper folded portion 921 may form an obtuse angle. The lower folded portion 922 may form an obtuse angle. The connecting folded portion 923 may form an obtuse angle. The upper folded portion 921 may be disposed on the fixing portion 100. The lower folded portion 922 may be disposed on the fixing portion 100. The connecting bent portion 923 may be disposed on the plate member 910. Through such a structure, the elastic member 920 can push the plate member 910 toward the fixed part 100. The connecting bent portion 923 can come into contact with the plate member 910 and press the plate member 910 toward the AF guide ball 810.

[0252] The lens driving device 10 may include a reinforcing member 930. The reinforcing member 930 may be disposed on the base 110. The reinforcing member 930 may be disposed to reinforce the strength of the base 110. The reinforcing member 930 can prevent damage to the base 110. The reinforcing member 930 can prevent damage to the column portion 111 of the base 110. The reinforcing member 930 can prevent damage to the outer wall portion 112 of the base 110. The reinforcing member 930 may have elasticity. The reinforcing member 930 may be formed of metal. The reinforcing member 930 may have a shape that is bent at least twice. The reinforcing member 930 may be formed in a U-shape when viewed from above. The reinforcing member 930 can open inward.

[0253] The reinforcing member 930 may include an inner portion 931. The inner portion 931 may be arranged on the opposite side of the inner groove 111-1 of the pillar portion 111 of the fixed part 100. The reinforcing member 930 may include an outer portion 932. The outer portion 932 may be arranged on the opposite side of the outer groove 112-1 of the outer wall portion 112 of the fixed part 100. The reinforcing member 930 may include a connecting portion 933. The connecting portion 933 can connect the inner portion 931 and the outer portion 932.

[0254] The lens driving device 10 may include a cover 940. The cover 940 may be disposed on the AF guide ball 810. The cover 940 may overlap the AF guide ball 810 in the optical axis direction. The cover 940 may overlap the inner ball 811 in the optical axis direction. The cover 940 may overlap the outer ball 812 in the optical axis direction. The cover 940 may be disposed on the inner groove 224-1 and the outer groove 224-2 of the AF carrier 210 to prevent the AF guide ball 810 from coming off from the upper side.

[0255] Hereinafter, autofocus (AF) driving of a lens driving device according to a first embodiment of the present invention will be described with reference to the drawings.

[0256] 36 to 38 are diagrams illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention. Fig. 36 is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil. Fig. 37 is a cross-sectional view illustrating the state when a forward current is applied to the AF coil and the moving part has moved upward in the optical axis direction. Fig. 38 is a cross-sectional view illustrating the state when a reverse current is applied to the AF coil and the moving part has moved downward in the optical axis direction.

[0257] 36 , the moving unit may be disposed at a position spaced apart from both the upper plate 121 of the cover 120 and the base 110 from an initial position where no current is applied to the AF coil 420. In this case, the moving unit may be the AF moving unit 200. Furthermore, the moving unit may include the AF moving unit 200 and the OIS moving unit 300.

[0258] When a forward current is applied to the AF coil 420, the AF coil 420 can move upward in the optical axis direction due to electromagnetic interaction between the AF coil 420 and the AF magnet 410 (see A in FIG. 37). At this time, the AF carrier 210 can move upward in the optical axis direction together with the AF coil 420. Furthermore, the OIS carrier 310 and the lens can move upward in the optical axis direction together with the AF carrier 210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor via the lens may be adjusted.

[0259] When a reverse current is applied to the AF coil 420, the AF coil 420 can move downward in the optical axis direction due to electromagnetic interaction between the AF coil 420 and the AF magnet 410 (see B in FIG. 38). At this time, the AF carrier 210 can move downward in the optical axis direction together with the AF coil 420. Furthermore, the OIS carrier 310 and the lens can move downward in the optical axis direction together with the AF carrier 210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor via the lens may be adjusted.

[0260] Meanwhile, during the movement of the AF coil 420, the AF sensor 430 moves together with the AF coil 420 and senses the strength of the magnetic field of the AF magnet 410, thereby detecting the amount of movement and position of the lens in the optical axis direction. The amount of movement and position of the lens in the optical axis direction detected by the AF sensor 430 can be used for autofocus feedback control.

[0261] Hereinafter, optical image stabilization (OIS) driving of a lens driving device according to a first embodiment of the present invention will be described with reference to the drawings.

[0262] 39 to 41 are diagrams illustrating the image stabilization drive of the lens driving device according to the first embodiment of the present invention. Fig. 39 is a cross-sectional view illustrating the state of the OIS moving unit in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig. 40 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil and the OIS moving unit moves in the x-axis direction perpendicular to the optical axis. Fig. 41 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the OIS moving unit moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0263] 39, the moving section may be placed in the initial position with no current applied to the OIS-x coil 520 and the OIS-y coil 620. In this case, the moving section may be the OIS moving section 300.

[0264] When a current is applied to the OIS-x coil 520, electromagnetic interaction between the OIS-x coil 520 and the OIS-x magnet 510 causes the OIS-x magnet 510 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 40 ). At this time, the OIS carrier 310 moves in the x-axis direction together with the OIS-x magnet 510. Furthermore, the lens moves in the x-axis direction together with the OIS carrier 310. More specifically, when a forward current is applied to the OIS-x coil 520, the OIS-x magnet 510, OIS carrier 310, and lens move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 520, the OIS-x magnet 510, OIS carrier 310, and lens move in the other direction on the x-axis.

[0265] When a current is applied to the OIS-y coil 620, electromagnetic interaction between the OIS-y coil 620 and the OIS-y magnet 610 causes the OIS-y magnet 610 to move in the y-axis direction, which is perpendicular to the optical axis (see B in FIG. 41 ). At this time, the OIS carrier 310 can move in the y-axis direction together with the OIS-y magnet 610. Furthermore, the lens can move in the y-axis direction together with the OIS carrier 310. More specifically, when a forward current is applied to the OIS-y coil 620, the OIS-y magnet 610, OIS carrier 310, and lens can move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 620, the OIS-y magnet 610, OIS carrier 310, and lens can move in the other direction on the y-axis.

[0266] Meanwhile, the OIS-x sensor 530 senses the strength of the magnetic field of the OIS-x magnet 510 and can sense the amount of movement and position of the OIS-x magnet 510. The amount of movement and position sensed by the OIS-x sensor 530 can be used for x-axis direction image stabilization feedback control. The OIS-y sensor 630 senses the strength of the magnetic field of the OIS-y magnet 610 and can sense the amount of movement and position of the OIS-y magnet 610. The amount of movement and position sensed by the OIS-y sensor 630 can be used for y-axis direction image stabilization feedback control.

[0267] A camera device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0268] FIG. 42 is an exploded perspective view of the camera device according to the first embodiment of the present invention.

[0269] The camera device 10A may include a camera module.

[0270] 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 carrier 310 of the lens driving device 10. The lens module 20 may be coupled to the OIS carrier 310 by screw coupling and / or adhesive. The lens module 20 may move integrally with the OIS carrier 310.

[0271] The camera device 10A may include a filter 30. The filter 30 can block light of a specific frequency band from passing through the lens module 20 from entering the image sensor 60. The filter 30 may be arranged parallel to the xy plane. The filter 30 may be arranged between the lens module 20 and the image sensor 60. The filter 30 may be arranged on the sensor base 40. Alternatively, the filter 30 may be arranged on the base 110. The filter 30 may include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 60.

[0272] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens driver 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 driver 10 to the sensor base 40. The adhesive member may also serve to prevent foreign matter from entering the interior of the lens driver 10. The adhesive member may include one or more of epoxy, a heat-curable adhesive, and an ultraviolet-curable adhesive.

[0273] 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 driving device 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 driving device 10. The printed circuit board 50 may be electrically connected to the lens driving device 10. An image sensor 60 may be disposed on the printed circuit board 50. The printed circuit board 50 may have various circuits, elements, a control unit, etc. for converting an image formed on the image sensor 60 into an electrical signal and transmitting the signal to an external device.

[0274] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured to form an image by receiving light that has passed through a lens and a filter 30. 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 and the optical axis of the lens may be aligned. 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 semi-conductor (MOS), a CPD, and a CID.

[0275] 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.

[0276] 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, amplitude, etc. 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.

[0277] 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.

[0278] An optical apparatus according to a first embodiment of the present invention will now be described with reference to the drawings.

[0279] FIG. 43 is a perspective view of the optical apparatus according to the first embodiment of the present invention, and FIG. 44 is a perspective view of the optical apparatus according to a modified example.

[0280] The optical device 1 may include one or more of 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 also include any device for taking videos or photographs.

[0281] 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 can photograph a subject. The optical device 1 may include a display. The display may be disposed in the main body 20. The display can 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 and a second surface opposite the first surface of the main body 20. As shown in FIG. 43, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 44, the camera device 10A-1 may have triple cameras arranged horizontally.

[0282] The configuration of a lens driving device according to a second embodiment of the present invention will be described below with reference to the drawings.

[0283] FIG. 45 is a conceptual diagram of a lens driving device according to a second embodiment of the present invention. FIG. 46 is a perspective view of the lens driving device according to the second embodiment of the present invention. FIG. 47 is a cross-sectional view taken along line AA in FIG. 46. FIG. 48 is a cross-sectional view taken along line BB in FIG. 46. FIG. 49 is an enlarged view of a partial area of ​​FIG. 48. FIG. 50 is a cross-sectional view taken along line CC in FIG. 46. FIG. 51 is a cross-sectional view taken along line DD in FIG. 46. FIG. 52 is a cross-sectional view of the lens driving device according to the second embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above. FIG. 53 is an exploded perspective view of the lens driving device according to the second embodiment of the present invention. FIG. 54 is an exploded perspective view of the lens driving device according to the second embodiment of the present invention, viewed from a direction different from that of FIG. 53. FIG. 55 is a perspective view of the lens driving device according to the second embodiment of the present invention, with the cover omitted. FIG. 56 is a perspective view viewed from a direction different from that of FIG. 55. FIG. 57 is a perspective view illustrating a fixed portion and related components of the lens driving device according to the second embodiment of the present invention. FIG. 58 is a perspective view illustrating a moving portion and related components of the lens driving device according to the second embodiment of the present invention. FIG. 59 is a bottom perspective view seen from a direction different from that of FIG. 58. FIG. 60 is a bottom perspective view of FIG. 59 with the cover of the AF moving unit removed. FIG. 61 is a bottom perspective view of FIG. 60 with the OIS moving unit removed. FIG. 62 is an enlarged view of a partial area of ​​FIG. 61. FIG. 63 is a bottom view of FIG. 61 seen from below. FIG. 64 is a perspective view illustrating the OIS moving unit and related components of a lens driving device according to a second embodiment of the present invention. FIG. 65 is an enlarged view of a partial area of ​​FIG. 64. FIG. 66 is a bottom perspective view of FIG. 64 seen from another direction. FIG. 67 is a perspective view of an elastic member of a lens driving device according to a second embodiment of the present invention. FIG. 68 is a plan view of the lens driving device according to the second embodiment of the present invention with the cover removed. FIG. 69 is an enlarged plan view of a portion of FIG. 68 with the cover omitted. FIG. 70 is a cross-sectional perspective view illustrating the ball and related components of a lens driving device according to a second embodiment of the present invention. FIG. 71 is a perspective view illustrating the ball and related components of a lens driving device according to a second embodiment of the present invention. FIG. 72 is a perspective view illustrating a ball receiving structure of the base of the lens driving device according to the second embodiment of the present invention.Fig. 73 is a perspective view illustrating the state in which the ball, plate member, elastic member, and reinforcing member are arranged in Fig. 72. Fig. 74 is a perspective view of Fig. 73 seen from another direction. Fig. 75 is a perspective view illustrating the moving part and ball of a lens driving device according to a second embodiment of the present invention. Fig. 76 is a perspective view of Fig. 75 seen from another direction. Fig. 77(a) is a diagram comparing the heights of the ball and the pressure point when the moving part has moved upward, and Fig. 77(b) is a diagram comparing the heights of the ball and the pressure point when the moving part has moved downward.

[0284] The lens driving device 1010 may be a voice coil motor (VCM). The lens driving device 1010 may be a lens driving motor. The lens driving device 1010 may be a lens driving actuator. The lens driving device 1010 may include an AF module. The lens driving device 1010 may include an OIS module.

[0285] The lens driving device 1010 may include a fixed portion 1100. The fixed portion 1100 may be a portion that is fixed relative to the moving portion when the moving portion moves. The moving portion can move relative to the fixed portion 1100. The lens driving device 1010 may include a base 1110. The fixing portion 1100 may include the base 1110. The base 1110 may be disposed below the AF carrier 1210. The base 1110 may be disposed below the OIS carrier 1310. The base 1110 may be coupled to the cover 1120. The AF carrier 1210 and the OIS carrier 1310 may be disposed on the base 1110. The AF carrier 1210 and the OIS carrier 1310 may be disposed on a bottom plate portion of the base 1110. The AF carrier 1210 and the OIS carrier 1310 may be disposed within the base 1110. The AF carrier 1210 and the OIS carrier 1310 may be disposed within a side wall portion of the base 1110.

[0286] The base 1110 may include a lower plate portion. The lower plate portion of the base 1110 can support the lower surface of the AF movement portion 1200. The lower plate portion of the base 1110 can support the lower surface of the AF carrier 1210.

[0287] The fixing portion 1100 may include a post portion 1111. The base 1110 may include a post portion 1111. The post portion 1111 may extend from the upper surface of the lower plate portion. The post portion 1111 may be disposed inside the outer wall portion 1112.

[0288] The base 1110 may include an inner groove 1111-1. The pillar portion 1111 may include an inner groove 1111-1. The inner groove 1111-1 may be formed on the pillar portion 1111. The inner groove 1111-1 may be an "AF guide ball receiving groove." The AF guide ball 1810 may be arranged in the inner groove 1111-1. The inner ball 1811 may be arranged in the inner groove 1111-1. The inner groove 1111-1 may be in direct contact with the AF guide ball 1810. The inner groove 1111-1 may be arranged in the optical axis direction. The inner groove 1111-1 may include multiple grooves. The inner groove 1111-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis.

[0289] The base 1110 may include a step portion 1111-2. The step portion 1111-2 may be formed on the column portion 1111. A plate member 1910 may be disposed on the step portion 1111-2.

[0290] The fixing part 1100 may include an outer wall part 1112. The base 1110 may include the outer wall part 1112. The outer wall part 1112 may be a "side part". The outer wall part 1112 may be a "side plate". The outer wall part 1112 may be a "side wall". The outer wall part 1112 of the base 1110 may extend from the upper surface of the lower plate part. The fixing part 1100 may include a first protrusion and a second protrusion. In this case, the first protrusion may be a pillar part 1111, and the second protrusion may be the outer wall part 1112.

[0291] The base 1110 may include an outer groove 1112-1. The outer wall portion 1112 may include an outer groove 1112-1. The outer groove 1112-1 may be formed to face the inner groove 1111-1. The outer groove 1112-1 may be arranged to face the inner groove 1111-1. The outer groove 1112-1 may be an "AF guide ball receiving groove." The AF guide ball 1810 may be arranged in the outer groove 1112-1. The outer ball 1812 may be arranged in the outer groove 1112-1. The outer groove 1112-1 may be in direct contact with the AF guide ball 1810. The outer groove 1112-1 may be arranged in the optical axis direction. The outer groove 1112-1 may include multiple grooves. The outer groove 1112-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be disposed diagonally relative to each other with respect to the optical axis. The outer groove 1112-1 may be disposed on the opposite side of the inner groove 1111-1. The outer groove 1112-1 may be formed in a shape corresponding to that of the inner groove 1111-1. The outer groove 1112-1 and the inner groove 1111-1 may be formed to have the same length in the optical axis direction.

[0292] The base 1110 may include a protrusion 1114. The protrusion 1114 may protrude outward. The connecting portions 1712 of the outer substrate 1710 may be disposed above and below the protrusion 1114. A groove may be formed in the protrusion 1114 to prevent interference even when the connecting portions 1712 of the outer substrate 1710 move.

[0293] The base 1110 may include a step. The step may be formed at a lower end of the outer surface of the base 1110. The step may protrude from the outer surface of the base 1110. A side plate 1122 of the cover 1120 may be disposed on the step of the base 1110.

[0294] The lens driving device 1010 may include a cover 1120. The fixed part 1100 may include the cover 1120. The cover 1120 may be disposed on the base 1110. The cover 1120 may be coupled to the base 1110. The cover 1120 may be fixed to the base 1110. The cover 1120 may house the AF carrier 1210 therein. The cover 1120 may house the OIS carrier 1310 therein. The cover 1120 may be a shielding member. The cover 1120 may be a shielding can.

[0295] The cover 1120 may include an upper plate 1121. The upper plate 1121 may be disposed on the moving portion. The upward movement of the moving portion may be restricted by the moving portion contacting the upper plate 1121. The upper plate 1121 may include holes through which light passes.

[0296] The cover 1120 may include side plates 1122. The side plates 1122 may extend from the top plate 1121. The side plates 1122 may be disposed on the base 1110. The side plates 1122 may be disposed on a stepped portion formed to protrude from the lower end of the outer surface of the base 1110. The side plates 1122 may include a plurality of side plates. The side plates 1122 may include four side plates. The side plates 1122 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.

[0297] The lens driving device 1010 may include a moving unit. The moving unit may be disposed on the fixed unit 1100. The moving unit may be disposed within the fixed unit 1100. The moving unit may be disposed on the fixed unit 1100. The moving unit may be disposed movably on the fixed unit 1100. The moving unit can be moved with respect to the fixed unit 1100 by a driving unit. The moving unit can move during AF driving. The moving unit can move during OIS driving. A lens may be coupled to the moving unit.

[0298] The lens driving device 1010 may include an AF moving unit 1200. The AF moving unit 1200 may be arranged in the fixed unit 1100. The AF moving unit 1200 may be arranged inside the fixed unit 1100. The AF moving unit 1200 may be arranged on the fixed unit 1100. The AF moving unit 1200 may be arranged between the fixed unit 1100 and the OIS moving unit 1300. The AF moving unit 1200 may be arranged movably on the fixed unit 1100. The AF moving unit 1200 can be moved in the optical axis direction relative to the fixed unit 1100 by an AF driving unit 1400. The AF moving unit 1200 can move during AF driving.

[0299] The lens driving device 1010 may include an AF carrier 1210. The AF movement unit 1200 may include an AF carrier 1210. The AF carrier 1210 may be an "AF holder." The AF carrier 1210 may be a "housing." The AF carrier 1210 may be disposed within the base 1110. The AF carrier 1210 may be disposed on the base 1110. The AF carrier 1210 may be disposed within the cover 1120. The AF carrier 1210 may be disposed between the base 1110 and the OIS carrier 1310. The AF carrier 1210 may be disposed so as to be movable in the optical axis direction.

[0300] The AF carrier 1210 may include a frame, a first upper plate, and a second upper plate. In this case, the frame may be a main body. The frame may be a holder member 1220. The first upper plate may be a metal member 1225. The second upper plate may be a preload member 1230. The AF carrier 1210 may be a housing. The housing may include a first housing and a second housing. In this case, the first housing may include the holder member 1220, and the second housing may include the preload member 1230. The OIS carrier 1310 may be a bobbin. The OIS guide ball 1820 may be disposed between the housing and the bobbin. The AF guide ball 1810 may be disposed between a side surface of the housing and the cover 1120. The AF guide ball 1810 may be disposed between a side surface of the housing and a base or a base pillar.

[0301] The AF carrier 1210 may include a protrusion. The protrusion may protrude from the AF carrier 1210 in a first direction perpendicular to the optical axis direction. The protrusion of the AF carrier 1210 may be referred to as a "third protrusion" to distinguish it from the two protrusions of the base 1110, that is, the pillar portion 1111 and the outer wall portion 1112. The protrusion of the AF carrier 1210 may be disposed between the pillar portion 1111 and the outer wall portion 1112 of the base 1110. The inner ball 1811 may be disposed between the pillar portion 1111 of the fixed portion 1100 and the plate member 1910. The inner ball 1812 may be disposed between the pillar portion 1111 of the fixed portion 1100 and the protrusion of the AF moving portion 1200. The outer ball 1813 may be disposed between the outer wall portion 1112 of the fixed portion 1100 and the protrusion of the AF moving portion 1200. The post 1111 may include a post disposed in a corner region such as the outer wall 1112. That is, a first post and a first outer wall may be disposed in a first corner region of the base 1110.

[0302] The lens driving device 1010 may include a holder member 1220. The AF carrier 1210 may include a holder member 1220. The holder member 1220 may be formed separately from the preload member 1230. A lower elastic member 1840 may be coupled to the holder member 1220.

[0303] The AF carrier 1210 may include an upper plate. The upper plate may be disposed on the OIS carrier 1310. The upper plate may be disposed between the OIS carrier 1310 and the upper plate 1121 of the cover 1120. The upper plate may be disposed on the OIS moving part 1300.

[0304] The AF carrier 1210 may include a hole. The holder member 1220 may include a hole. The upper plate of the holder member 1220 may include a hole. The hole may be formed in the upper plate of the holder member 1220. The hole may be open inward. The preload member 1230 may be inserted into the hole. The protrusion 1231 of the preload member 1230 may be inserted into the hole. The hole may be formed as a groove. The hole may be replaced by a groove. That is, as a modified example, the AF carrier 1210 may include a groove into which the protrusion 1231 of the preload member 1230 is inserted.

[0305] The AF carrier 1210 may include side walls. The side walls may extend downward from the upper plate. An inner substrate 1720 may be disposed on the side walls. The AF coil 1420 may be disposed on the side walls. The OIS-x coil 1520 may be disposed on the side walls. The OIS-y coil 1620 may be disposed on the side walls. The side walls may include grooves to avoid the coils. The side walls may include multiple side walls. The side walls may include four side walls. The side walls may include a first side wall and a second side wall disposed opposite each other, and a third side wall and a fourth side wall disposed opposite each other.

[0306] The AF carrier 1210 may include an inner groove 1224-1. The holder member 1220 may include an inner groove 1224-1. The inner groove 1224-1 may be an "AF guide ball receiving groove." An AF guide ball 1810 may be arranged in the inner groove 1224-1. An inner ball 1811 may be arranged in the inner groove 1224-1. The inner groove 1224-1 may be in direct contact with the AF guide ball 1810. The inner groove 1224-1 may be arranged in the optical axis direction. The inner groove 1224-1 can guide the AF guide ball 1810 to move in the optical axis direction. The inner groove 1224-1 may include multiple grooves. The inner groove 1224-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis.

[0307] The AF carrier 1210 may include an outer groove 1224-2. The holder member 1220 may include an outer groove 1224-2. The outer groove 1224-2 may be an "AF guide ball receiving groove." An AF guide ball 1810 may be arranged in the outer groove 1224-2. An outer ball 1812 may be arranged in the outer groove 1224-2. The outer groove 1224-2 may be in direct contact with the AF guide ball 1810. The outer groove 1224-2 may be arranged in the optical axis direction. The outer groove 1224-2 can guide the AF guide ball 1810 to move in the optical axis direction. The outer groove 1224-2 may include multiple grooves. The outer groove 1224-2 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis. The outer groove 1224-2 may be disposed on the opposite side of the inner groove 1224-1. The outer groove 1224-2 may be formed in a shape corresponding to the inner groove 1224-1. The outer groove 1224-2 and the inner groove 1224-1 may be formed to have the same length in the optical axis direction.

[0308] The AF carrier 1210 may include a metal member 1225. The holder member 1220 may include a metal member 1225. The metal member 1225 may be insert-injected into the holder member 1220. At least a portion of the metal member 1225 may be disposed on the upper surface of the holder member 1220. The metal member 1225 may be disposed to reinforce the strength of the holder member 1220.

[0309] The AF carrier 1210 may include a protrusion 1226. The holder member 1220 may include a protrusion 1226. The protrusion 1226 may be formed on an outer surface of the AF carrier 1210. The protrusion 1226 may protrude outward from the AF carrier 1210. Connecting portions 1712 may be arranged on the upper and lower surfaces of the protrusion 1226.

[0310] The lens driving device 1010 may include a preload member 1230. The AF carrier 1210 may include a preload member 1230. The preload member 1230 can be coupled to an upper surface of the holder member 1220. The preload member 1230 can be coupled to the holder member 1220. The preload member 1230 may be inserted into the holder member 1220 from above and coupled to it. The preload member 1230 can pressurize the OIS guide balls 1820. The preload member 1230 may be in contact with the OIS guide balls 1820. The preload member 1230 may be in direct contact with the OIS guide balls 1820. The preload member 1230 can be coupled to the holder member 1220 and pressurize the OIS guide balls 1820.

[0311] The AF carrier 1210 may include a protrusion 1231. The preload member 1230 may include a protrusion 1231. The protrusion 1231 can be coupled to a hole in the holder member 1220. The protrusion 1231 of the preload member 1230 may be inserted into the hole in the holder member 1220 from above. The protrusion 1231 of the preload member 1230 may be disposed in the hole in the holder member 1220. At least a portion of the protrusion 1231 of the preload member 1230 may be disposed in the hole in the holder member 1220. The OIS guide ball 1820 may be disposed at a lower end of the protrusion 1231 of the preload member 1230. The protrusion 1231 may include multiple protrusions. The protrusion 1231 may include four protrusions.

[0312] The AF carrier 1210 may include a groove 1232. The preload member 1230 may include a groove 1232. The groove 1232 may be an "OIS guide ball receiving groove." The groove 1232 may be formed in the protruding portion 1231. The groove 1232 may be formed on the lower surface of the protruding portion 1231. The groove 1232 may be formed at an end of the protruding portion 1231. The groove 1232 may be formed as a concave on the lower surface of the protruding portion 1231. The OIS guide ball 1820 may be disposed in the groove 1232. The groove 1232 may be in direct contact with the OIS guide ball 1820. For example, the groove 1232 may include a flat bottom surface. In this case, the OIS guide ball 1820 may contact the bottom surface of the groove 1232 at one point. That is, the groove 1232 may include a flat bottom surface, and the OIS guide ball 1820 may contact the flat surface at one point. Alternatively, the bottom surface of the groove 1232 may include at least three flat surfaces that are arranged to be inclined relative to one another. In this case, the OIS guide ball 1820 may contact the bottom surface of the groove 1232 at three points.

[0313] The lens driving device 1010 may include a cover 1240. The AF movement unit 1200 may include a cover 1240. The cover 1240 may be coupled to the AF carrier 1210. The cover 1240 may be coupled to the underside of the AF carrier 1210. The cover 1240 may be coupled to the underside of the AF carrier 1210. The cover 1240 may include a hook. The hook of the cover 1240 may be coupled to the AF carrier 1210. The hook of the cover 1240 protrudes upward and may be coupled to a side surface of the AF carrier 1210.

[0314] The lens driving device 1010 may include an OIS moving unit 1300. The OIS moving unit 1300 may be disposed in the fixed unit 1100. The OIS moving unit 1300 may be disposed within the fixed unit 1100. The OIS moving unit 1300 may be disposed on the fixed unit 1100. The OIS moving unit 1300 may be disposed within the AF moving unit 1200. The OIS moving unit 1300 may be movably disposed. The OIS moving unit 1300 can be moved in a direction perpendicular to the optical axis relative to the fixed unit 1100 and the AF moving unit 1200 by an OIS driving unit. The OIS moving unit 1300 can be moved in the x-axis direction by an OIS-x driving unit 1500. The OIS moving unit 1300 can be moved in the y-axis direction by an OIS-y driving unit 1600. The OIS moving unit 1300 can move when the OIS is driven.

[0315] The lens driving device 1010 may include an OIS carrier 1310. The OIS moving unit 1300 may include an OIS carrier 1310. The OIS carrier 1310 may be an "OIS holder." The OIS carrier 1310 may be a "bobbin." The OIS carrier 1310 may be disposed within the AF carrier 1210. The OIS carrier 1310 may be disposed within the base 1110. The OIS carrier 1310 may be disposed on the base 1110. The OIS carrier 1310 may be disposed within the cover 1120. The OIS carrier 1310 may be disposed so as to be movable in a direction perpendicular to the optical axis.

[0316] The OIS carrier 1310 may include an outer surface. The OIS carrier 1310 may include multiple side surfaces. The OIS carrier 1310 may include first and second side surfaces opposite each other, and third and fourth side surfaces opposite each other. The AF coil 1420 may be disposed between the first side surface of the OIS carrier 1310 and the AF magnet 1410. The OIS-x magnet 1510 may be disposed on the third side surface of the OIS carrier 1310. The OIS-y magnet 1610 may be disposed on the second side surface of the OIS carrier 1310.

[0317] The OIS carrier 1310 may include a groove. The groove may be an "upper elastic member interference prevention groove." The groove may be formed on the upper surface of the OIS carrier 1310. The groove may be formed in a concave shape on the upper surface of the OIS carrier 1310. The groove may be arranged at a position corresponding to the upper elastic member 1830 so as to prevent the OIS carrier 1310 and the upper elastic member 1830 from interfering with each other.

[0318] The OIS carrier 1310 may include grooves 1311. The grooves 1311 may be "OIS guide ball receiving grooves." The OIS guide balls 1820 may be disposed in the grooves 1311. The grooves 1311 may be in direct contact with the OIS guide balls 1820. The grooves 1311 may be disposed in a direction perpendicular to the optical axis. The grooves 1311 may be recessed in the optical axis direction. The grooves 1311 may include multiple grooves. The grooves 1311 may include four grooves. The grooves 1311 may contact the OIS guide balls 1820 at one point. Alternatively, the grooves 1311 may contact the OIS guide balls 1820 at two points. The number of points at which the OIS carrier 1310 and the OIS guide balls 1820 contact each other may change depending on the movement of the OIS guide balls 1820. The grooves 1311 may be formed on the upper surface of the OIS carrier 1310. The groove 1311 can be open upwards.

[0319] The OIS carrier 1310 may include side stoppers. The side stoppers can limit the lateral stroke of the OIS carrier 1310. That is, when the OIS carrier 1310 moves to its maximum, the side stoppers of the OIS carrier 1310 may come into contact with one or more of the AF carrier 1210 and the base 1110. The side stoppers may be formed on the outer surface of the OIS carrier 1310. The side stoppers may protrude outward from the side surfaces of the OIS carrier 1310.

[0320] The OIS carrier 1310 may include a protrusion 1312. The protrusion 1312 can be coupled to the upper elastic member 1830. The protrusion 1312 may be a "coupling protrusion." The upper elastic member 1830 may include a hole into which the protrusion 1312 of the OIS carrier 1310 is inserted. The protrusion 1312 may be formed on the upper surface of the OIS carrier 1310.

[0321] The OIS carrier 1310 may include a groove 1313. The groove 1313 may be a "lens adhesive receiving groove." The groove 1313 may be formed on the inner circumferential surface of the OIS carrier 1310. The groove 1313 may be formed in a concave shape on the inner circumferential surface of the OIS carrier 1310. An adhesive may be injected between the lens and the OIS carrier 1310 through the groove 1313. An adhesive for bonding the lens and the OIS carrier 1310 may be placed in the groove 1313.

[0322] The OIS carrier 1310 may include a groove 1314. The groove 1314 may be formed in the lower surface of the OIS carrier 1310. The groove 1314 may be open outward.

[0323] The OIS carrier 1310 may include a mounting portion 1315. The mounting portion 1315 may be a "magnet mounting portion." Magnets 1510 and 1620 may be disposed in the mounting portion 1315. The mounting portion 1315 may be formed as a groove, for example.

[0324] The OIS carrier 1310 may include a lower stopper 1316. The lower stopper 1316 may be formed on a lower surface of the OIS carrier 1310. The lower stopper 1316 may protrude downward from the lower surface of the OIS carrier 1310. The lower stopper 1316 can limit the downward movement of the OIS carrier 1310 through contact with the AF carrier 1210 or the base 1110.

[0325] Hereinafter, the "groove 1311," "groove 1313," and "groove 1314" of the OIS carrier 1310 may be referred to as the "first groove," "second groove," and "third groove," respectively.

[0326] The lens driving device 1010 may include a driving unit. The driving unit may move the moving unit relative to the fixed unit 1100. The driving unit may include an AF driving unit 1400. The driving unit may include an OIS driving unit. The driving unit may include an OIS-x driving unit 1500. The driving unit may include an OIS-y driving unit 1600. The driving unit may include a coil and a magnet.

[0327] The lens driving device 1010 may include an AF driving unit 1400. The AF driving unit 1400 may move the AF movement unit 1200 in the optical axis direction. The AF driving unit 1400 may move the AF carrier 1210 in the optical axis direction. The AF driving unit 1400 may move the AF carrier 1210 in the optical axis direction via electromagnetic force. The AF driving unit 1400 may include a coil and a magnet.

[0328] In the second embodiment of the present invention, the AF carrier 1210 and the OIS carrier 1310 can move in the optical axis direction due to the interaction between the AF coil 1420 and the AF magnet 1410. The AF coil 1420, the AF carrier 1210, and the OIS carrier 1310 can move integrally in the optical axis direction.

[0329] The lens driving device 1010 may include an AF magnet 1410. The AF driving unit 1400 may include an AF magnet 1410. The AF magnet 1410 may be an "AF magnet." The AF magnet 1410 may be a permanent magnet. The AF magnet 1410 may be disposed on the fixed unit 1100. The AF magnet 1410 may be disposed on the base 1110. The AF magnet 1410 may be disposed on the cover 1120. The AF magnet 1410 may be disposed on a side plate 1122 of the cover 1120. The AF magnet 1410 may be disposed on an outer surface of the base 1110. The AF magnet 1410 may be disposed on an inner surface of the base 1110. The AF magnet 1410 may be fixed to the base 1110. The AF magnet 1410 can be coupled to the base 1110. The AF magnet 1410 may be adhered to the base 1110 with an adhesive. The AF magnet 1410 may be disposed within the cover 1120. The AF magnet 1410 may interact with the AF coil 1420. The AF magnet 1410 may electromagnetically interact with the AF coil 1420. The AF magnet 1410 may be disposed at a position corresponding to the AF coil 1420. The AF magnet 1410 may face the AF coil 1420. The AF magnet 1410 may face the AF coil 1420. The AF magnet 1410 may overlap with the AF coil 1420 in a direction perpendicular to the optical axis.

[0330] The AF magnet 1410 may be a four-pole magnet. The AF magnet 1410 may include a four-pole magnetized magnet. The AF magnet 1410 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 vertically. The first magnet portion and the second magnet portion may be arranged spaced apart in the vertical direction, with a neutral portion disposed between the first magnet portion and the second magnet portion.

[0331] The lens driving device 1010 may include an AF coil 1420. The AF driving unit 1400 may include an AF coil 1420. The AF coil 1420 may interact with the AF magnet 1410. The AF coil 1420 may face the AF magnet 1410. The AF coil 1420 may be disposed at a position corresponding to the AF magnet 1410. The AF coil 1420 may overlap the AF magnet 1410 in a direction perpendicular to the optical axis. The AF coil 1420 may be disposed on the inner substrate 1720. The AF coil 1420 may be disposed on the AF carrier 1210. The AF coil 1420 may be disposed on the AF movement unit 1200.

[0332] In the second embodiment of the present invention, the AF coil 1420 can move in the optical axis direction. The AF coil 1420 can move in the optical axis direction through interaction with the AF magnet 1410. The AF coil 1420 can move together with the AF movement unit 1200. The AF coil 1420 can move in the optical axis direction together with the AF movement unit 1200. During the AF driving process, the AF coil 1420 can move in the optical axis direction together with the AF movement unit 1200. The AF coil 1420 may be disposed in the AF movement unit 1200. The AF coil 1420 may be fixed to the AF movement unit 1200. The AF coil 1420 can be coupled to the AF movement unit 1200.

[0333] The lens driving device 1010 may include an AF sensor 1430. The AF driving unit 1400 may include an AF sensor 1430. The AF sensor 1430 may be a hole sensor. The AF sensor 1430 may be disposed on the inner substrate 1720. The AF sensor 1430 can sense the AF magnet 1410. The AF sensor 1430 can sense movement of the AF magnet 1410. The movement amount or position of the AF magnet 1410 sensed by the AF sensor 1430 can be used as feedback for autofocus driving.

[0334] The AF sensor 1430 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 1420. The driver IC may supply a current to the AF coil 1420.

[0335] The AF sensor 1430 may be disposed within the AF coil 1420. The AF sensor 1430 may overlap with the neutral portion of the AF magnet 1410 in a direction perpendicular to the optical axis. As a modification, the AF sensor 1430 may be disposed outside the AF coil 1420. The AF sensor 1430 may overlap with the AF coil 1420 in the optical axis direction.

[0336] The AF sensor 1430 may overlap the AF coil 1420 in a direction perpendicular to the optical axis. The lens driving device 1010 may include an AF yoke 1440. The AF yoke 1440 may be disposed at a position corresponding to the AF magnet 1410. An attractive force may act between the AF yoke 1440 and the AF magnet 1410. The attractive force between the AF yoke 1440 and the AF magnet 1410 may maintain the AF guide ball 1810 in contact with the base 1110 and the AF carrier 1210. The AF yoke 1440 may be disposed on the inner substrate 1720. The AF yoke 1440 may be disposed inside the AF coil 1420.

[0337] The lens driving device 1010 may include an OIS driving unit. The OIS driving unit may move the OIS moving unit 1300 in a direction perpendicular to the optical axis direction. The OIS driving unit may move the OIS carrier 1310 in a direction perpendicular to the optical axis. The OIS driving unit may move the OIS carrier 1310 in a direction perpendicular to the optical axis via electromagnetic force. The lens driving device 1010 may include an OIS-x driving unit 1500.

[0338] The OIS driver may include an OIS-x driver 1500. The OIS-x driver 1500 may move the OIS carrier 1310 in the x-axis direction perpendicular to the optical axis. The OIS-x driver 1500 may move the OIS carrier 1310 in the x-axis direction perpendicular to the optical axis using electromagnetic force. The OIS-x driver 1500 may include a coil and a magnet.

[0339] In the second embodiment of the present invention, the OIS-x magnet 1510 and the OIS-x coil 1520 may move the OIS moving unit 1300 in a first direction perpendicular to the optical axis direction. In this case, the first direction may be the x-axis direction. The interaction between the OIS-x coil 1520 and the OIS-x magnet 1510 allows the OIS carrier 1310 to move in the x-axis direction perpendicular to the optical axis direction. The OIS-x magnet 1510 and the OIS carrier 1310 can move together in the x-axis direction.

[0340] The lens driving device 1010 may include an OIS-x magnet 1510. The OIS driving unit may include the OIS-x magnet 1510. The OIS-x magnet 1510 may be an "OIS-x magnet." The OIS-x magnet 1510 may be a permanent magnet. The OIS-x magnet 1510 may be disposed in the OIS moving unit 1300. The OIS-x magnet 1510 may be separated from the AF magnet 1410. The OIS-x magnet 1510 may be disposed in the OIS carrier 1310. The OIS-x magnet 1510 may be disposed on the outer surface of the OIS carrier 1310. The OIS-x magnet 1510 may be fixed to the OIS carrier 1310. The OIS-x magnet 1510 may be coupled to the OIS carrier 1310. The OIS-x magnet 1510 may be adhered to the OIS carrier 1310 with an adhesive. The OIS-x magnet 1510 may be disposed within the cover 1120. The OIS-x magnet 1510 may interact with the OIS-x coil 1520. The OIS-x magnet 1510 may electromagnetically interact with the OIS-x coil 1520. The OIS-x magnet 1510 may be disposed at a position corresponding to the OIS-x coil 1520. The OIS-x magnet 1510 may face the OIS-x coil 1520. The OIS-x magnet 1510 may face the OIS-x coil 1520. The OIS-x magnet 1510 may overlap with the OIS-x coil 1520 in a direction perpendicular to the optical axis. The OIS-x magnet 1510 may overlap with the OIS-x coil 1520 in the x-axis direction. The OIS-x magnet 1510 may move in the x-axis direction perpendicular to the optical axis. The OIS-x magnet 1510 may be a two-pole magnet. The OIS-x magnet 1510 may include a two-pole magnetized magnet. The OIS-x magnet 1510 may include a north pole and a south pole.

[0341] The lens driving device 1010 may include an OIS-x coil 1520. The OIS driving unit may include an OIS-x coil 1520. The OIS-x coil 1520 may interact with the OIS-x magnet 1510. The OIS-x coil 1520 may move the OIS-x magnet 1510 in the x-axis direction, which is perpendicular to the optical axis. The OIS-x coil 1520 may move the OIS-x magnet 1510 in the x-axis direction through its interaction with the OIS-x magnet 1510. The OIS-x coil 1520 may face the OIS-x magnet 1510. The OIS-x coil 1520 may be positioned corresponding to the OIS-x magnet 1510. The OIS-x coil 1520 may overlap the OIS-x magnet 1510 in the direction perpendicular to the optical axis. The OIS-x coil 1520 may be disposed on the inner substrate 1720. The OIS-x coil 1520 may be disposed on the AF carrier 1210.

[0342] In the second embodiment of the present invention, OIS-x coil 1520 can move together with AF movement section 1200. OIS-x coil 1520 can move in the optical axis direction together with AF movement section 1200. During the AF driving process, OIS-x coil 1520 can move in the optical axis direction together with AF movement section 1200. OIS-x coil 1520 may be disposed in AF movement section 1200. OIS-x coil 1520 may be fixed to AF movement section 1200. OIS-x coil 1520 can be coupled to AF movement section 1200.

[0343] The lens driving device 1010 may include an OIS-x sensor 1530. The OIS driving unit may include the OIS-x sensor 1530. The OIS-x sensor 1530 may be disposed on the inner substrate 1720. The OIS-x sensor 1530 may include a Hall sensor. The OIS-x sensor 1530 can sense the OIS-x magnet 1510. The OIS-x sensor 1530 can sense the magnetic force of the OIS-x magnet 1510. The OIS-x sensor 1530 may be disposed above the OIS-x magnet 1520. The OIS-x sensor 1530 may overlap with the OIS-x magnet 1520 in the optical axis direction. As a variant, the OIS-x sensor 1530 may be disposed within the OIS-x coil 1520. The OIS-x sensor 1530 may overlap with the OIS-x coil 1520 in the optical axis direction. OIS-x sensor 1530 may overlap with OIS-x coil 1520 in a direction perpendicular to the optical axis. OIS-x sensor 1530 may face OIS-x magnet 1510. OIS-x sensor 1530 may be disposed at a position corresponding to OIS-x magnet 1510. OIS-x sensor 1530 can sense the movement of OIS-x magnet 1510. The amount of movement or position of OIS-x magnet 1510 sensed by OIS-x sensor 1530 can be used as feedback for image stabilization driving in the x-axis direction.

[0344] The lens driver 1010 may include an OIS-x yoke 1540. The OIS-x yoke 1540 may be disposed on the OIS-x magnet 1510. The OIS-x yoke 1540 may be disposed between the OIS-x magnet 1510 and the OIS carrier 1310. The OIS-x yoke 1540 can prevent magnetic flux leakage from the OIS-x magnet 1510 and improve the interaction force with the OIS-x coil 1520.

[0345] The lens driving device 1010 may include an OIS-y driving unit 1600. The OIS driving unit may include the OIS-y driving unit 1600. The OIS-y driving unit 1600 may move the OIS carrier 1310 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction. The OIS-y driving unit 1600 may move the OIS carrier 1310 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction, via electromagnetic force. The OIS-y driving unit 1600 may include a coil and a magnet.

[0346] In a second embodiment of the present invention, the OIS-y magnet 1610 and the OIS-y coil 1620 may move the OIS moving unit 1300 in a second direction perpendicular to the optical axis direction and the first direction. In this case, the second direction may be the y-axis direction. The interaction between the OIS-y coil 1620 and the OIS-y magnet 1610 allows the OIS carrier 1310 to move in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y magnet 1610 and the OIS carrier 1310 can move together in the y-axis direction. The OIS-y magnet 1610 may overlap the AF magnet 1410 in the second direction. The OIS-y magnet 1610 may overlap the AF magnet 1410 in the y-axis direction.

[0347] The lens driving device 1010 may include an OIS-y magnet 1610. The OIS-y driving unit 1600 may include an OIS-y magnet 1610. The OIS-y magnet 1610 may be an "OIS-y magnet." The OIS-y magnet 1610 may be a permanent magnet. The OIS-y magnet 1520 may be disposed in the OIS moving unit 1300. The OIS-y magnet 1610 may be spaced apart from the OIS-x magnet 1510. The OIS-y magnet 1610 may be spaced apart from the AF magnet 1410. The OIS-y magnet 1610 may be disposed in the OIS carrier 1310. The OIS-y magnet 1610 may be disposed on the outer surface of the OIS carrier 1310. The OIS-y magnet 1610 may be fixed to the OIS carrier 1310. The OIS-y magnet 1610 may be coupled to the OIS carrier 1310. The OIS-y magnet 1610 may be glued to the OIS carrier 1310. The OIS-y magnet 1610 may be disposed within the cover 1120. The OIS-y magnet 1610 may interact with the OIS-y coil 1620. The OIS-y magnet 1610 may electromagnetically interact with the OIS-y coil 1620. The OIS-y magnet 1610 may be disposed at a position corresponding to the OIS-y coil 1620. The OIS-y magnet 1610 may face the OIS-y coil 1620. The OIS-y magnet 1610 may face the OIS-y coil 1620. The OIS-y magnet 1610 may overlap with the OIS-y coil 1620 in a direction perpendicular to the optical axis. The OIS-y magnet 1610 may overlap with the OIS-y coil 1620 in the y-axis direction. The OIS-y magnet 1610 may move in the y-axis direction.

[0348] The OIS-y magnet 1610 may be a two-pole magnet. The OIS-y magnet 1610 may include a two-pole magnetized magnet. The OIS-y magnet 1610 may include a north pole and a south pole.

[0349] The lens driving device 1010 may include an OIS-y coil 1620. The OIS-y driving unit 1600 may include an OIS-y coil 1620. The OIS-y coil 1620 may interact with the OIS-y magnet 1610. The OIS-y coil 1620 may be disposed on the opposite side of the AF coil 1420 with respect to the optical axis. The OIS-y coil 1620 may move the OIS-y magnet 1610 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis. The OIS-y coil 1620 may move the OIS-y magnet 1610 in the y-axis direction through interaction with the OIS-y magnet 1610. The OIS-y coil 1620 may face the OIS-y magnet 1610. The OIS-y coil 1620 may be disposed at a position corresponding to the OIS-y magnet 1610. The OIS-y coil 1620 may overlap the OIS-y magnet 1610 in a direction perpendicular to the optical axis. The OIS-y coil 1620 may be disposed on the inner substrate 1720. The OIS-y coil 1620 may be disposed on the AF carrier 1200.

[0350] In the second embodiment of the present invention, the OIS-y coil 1620 can move together with the AF movement unit 1200. The OIS-y coil 1620 can move in the optical axis direction together with the AF movement unit 1200. During the AF driving process, the OIS-y coil 1620 can move in the optical axis direction together with the AF movement unit 1200. The OIS-y coil 1620 may be disposed in the AF movement unit 1200. The OIS-y coil 1620 may be fixed to the AF movement unit 1200. The OIS-y coil 1620 can be coupled to the AF movement unit 1200.

[0351] The lens driving device 1010 may include an OIS-y sensor 1630. The OIS-y driving unit 1600 may include an OIS-y sensor 1630. The OIS-y sensor 1630 may be disposed on the inner substrate 1720. The OIS-y sensor 1630 may include a Hall sensor. The OIS-y sensor 1630 can sense the OIS-y magnet 1610. The OIS-y sensor 1630 can sense the magnetic force of the OIS-y magnet 1610. The OIS-y sensor 1630 may be disposed above the OIS-y magnet 1620. The OIS-y sensor 1630 may overlap with the OIS-y magnet 1620 in the optical axis direction. The OIS-y sensor 1630 may overlap with the OIS-y magnet 1620 in a direction perpendicular to the optical axis. As a modification, the OIS-y sensor 1630 may be disposed within the OIS-y coil 1620. The OIS-y sensor 1630 may overlap the OIS-y coil 1620 in the optical axis direction. The OIS-y sensor 1630 may face the OIS-y magnet 1610. The OIS-y sensor 1630 may be disposed at a position corresponding to the OIS-y magnet 1610. The OIS-y sensor 1630 can sense movement of the OIS-y magnet 1610. The amount of movement or position of the OIS-y magnet 1610 sensed by the OIS-y sensor 1630 can be used as feedback for driving image stabilization in the y-axis direction.

[0352] The lens driving device 1010 may include an OIS-y yoke 1640. The OIS-y yoke 1640 may be disposed on the OIS-y magnet 1610. The OIS-y yoke 1640 may be disposed between the OIS-y magnet 1610 and the OIS carrier 1310. The OIS-y yoke 1640 can prevent magnetic flux leakage from the OIS-y magnet 1610 and improve the interaction force with the OIS-y coil 1620.

[0353] When viewed from above, the AF magnet 1410, the AF coil 1420, the OIS-y magnet 1610, and the OIS-y coil 1620 may be arranged sequentially on an imaginary straight line. When viewed from above, the AF magnet 1410, the AF coil 1420, the OIS-y magnet 1610, and the OIS-y coil 1620 may be arranged sequentially on an imaginary straight line. When viewed from above, the AF magnet 1410, the AF coil 1420, the OIS-y magnet 1610, and the OIS-y coil 1620 may be arranged sequentially. When viewed from above, the AF magnet 1410, the AF coil 1420, the OIS-y magnet 1610, and the OIS-y coil 1620 may be arranged sequentially in the y-axis direction. When viewed from above, the AF magnet 1410, the AF coil 1420, the OIS-y magnet 1610, and the OIS-y coil 1620 may overlap in the y-axis direction.

[0354] The lens driver 1010 may include substrates 1710 and 1720. The substrates 1710 and 1720 may include flexible printed circuit boards (FPCBs). The substrates 1710 and 1720 may be electrically connected to the coils 1420, 1520, and 1620. The substrates 1710 and 1720 may be electrically connected to the sensors 1430, 1530, and 1630.

[0355] The lens driving device 1010 may include an outer substrate 1710. The outer substrate 1710 may be disposed on the base 1110. The outer substrate 1710 may be electrically connected to the coils 1420, 1520, and 1620. The outer substrate 1710 may be electrically connected to the sensors 1430, 1530, and 1630. The outer substrate 1710 may connect the AF carrier 1210 to the base 1110. The outer substrate 1710 may elastically connect the AF carrier 1210 to the base 1110. The outer substrate 1710 may connect the fixed portion 1100 to the inner substrate 1720. The outer substrate 1710 may support the AF carrier 1210 so that it is movable relative to the base 1110. The outer substrate 1710 may guide the AF carrier 1210 to move in the optical axis direction relative to the base 1110. The outer substrate 1710 may include a flexible substrate. The outer substrate 1710 may include a flexible printed circuit board (FPCB). The outer substrate 1710 may include an elastic portion. The outer substrate 1710 may include an elastic member. The outer substrate 1710 may include an outer portion 1711 disposed on the fixed portion 1100, and a connecting portion 1712 extending from the outer portion 1711 and coupled to the inner substrate 1720.

[0356] The outer substrate 1710 may include an outer portion 1711. The outer portion 1711 may be disposed on the base 1110. The outer portion 1711 may be formed to wrap around the side surfaces of the base 1110. The outer portion 1711 may be disposed on three side surfaces of the base 1110. The outer portion 1711 may include two terminal portions. The two terminal portions may be disposed on opposite sides of the optical axis. The terminal portions may include a terminal 1711-1.

[0357] The outer substrate 1710 may include a terminal 1711-1. The outer portion 1711 of the outer substrate 1710 may include a terminal 1711-1. The terminal 1711-1 may be electrically connected to the terminal 1712-1. The terminal 1711-1 may be disposed at a lower end of the base 1110. The terminal 1711-1 may be coupled to the printed circuit board 1050. The terminal 1711-1 may be coupled to a terminal of the printed circuit board 1050 via solder. The terminal 1711-1 may be coupled to a terminal of the printed circuit board 1050 via an electrically conductive member. The terminal 1711-1 may be coupled to a terminal of the printed circuit board 1050. The terminal 1711-1 may be electrically connected to a terminal of the printed circuit board 1050.

[0358] The outer substrate 1710 may include a connecting portion 1712. The connecting portion 1712 may be an "extension portion." The connecting portion 1712 may be a "leg portion." The connecting portion 1712 may extend from the outer portion 1711. At least a portion of the connecting portion 1712 can move together with the AF carrier 1210. The extension portion may extend from the outer portion 1711. At least a portion of the extension portion can move together with the AF carrier 1210. At least a portion of the connecting portion 1712 may be arranged perpendicular to the optical axis direction. The connecting portion 1712 of the outer substrate 1710 may be coupled to the inner substrate 1720 so that the inner substrate 1720 can move in the optical axis direction. At least a portion of the connecting portion 1712 may be arranged parallel to the optical axis direction.

[0359] The link 1712 may include multiple linkages. The linkage 1712 may include a first linkage and a second linkage. The second linkage may be located below the first linkage.

[0360] The outer substrate 1710 may include a terminal 1712-1. The connecting portion 1712 of the outer substrate 1710 may include a terminal 1712-1. The terminal 1712-1 may be coupled to a terminal 1721-1 of the inner substrate 1720. The terminal 1712-1 of the outer substrate 1710 may be coupled to the terminal 1721-1 of the inner substrate 1720 via solder. The terminal 1712-1 of the outer substrate 1710 may be coupled to the terminal 1721-1 of the inner substrate 1720 via an electrically conductive member. The terminal 1712-1 of the outer substrate 1710 may be coupled to the terminal 1721-1 of the inner substrate 1720. The terminal 1712-1 of the outer substrate 1710 may be electrically connected to the terminal 1721-1 of the inner substrate 1720.

[0361] The outer substrate 1710 may include a folded portion 1712-2. The folded portion 1712-2 may be formed in the connecting portion 1712. The folded portion 1712-2 may be formed in each of the first connecting portion and the second connecting portion. The folded portion 1712-2 may include a shape folded at least twice. The folded portion 1712-2 may include a shape folded into a U-shape. The folded portion 1712-2 may include a round shape. The folded portion 1712-2 may include a portion arranged parallel to the optical axis.

[0362] Hereinafter, one of the "terminal 1711-1" and the "terminal 1712-1" of the outer substrate 1710 may be referred to as the "first terminal" and the other as the "second terminal."

[0363] The lens driving device 1010 may include an inner substrate 1720. The inner substrate 1720 may be electrically connected to the coils 1420, 1520, and 1620. The inner substrate 1720 may be electrically connected to the sensors 1430, 1530, and 1630. The inner substrate 1720 may be disposed in the AF movement unit 1200. The inner substrate 1720 may be disposed in the AF carrier 1210. The inner substrate 1720 may be fixed to the AF carrier 1210. The inner substrate 1720 can be coupled to the AF carrier 1210. The inner substrate 1720 may be adhered to the AF carrier 1210 with an adhesive. The inner substrate 1720 may include a flexible substrate. The inner substrate 1720 may include a flexible printed circuit board (FPCB). The inner substrate 1720 may include an elastic portion. The inner substrate 1720 may include an elastic member.

[0364] The inner substrate 1720 may include a side plate portion 1721. The side plate portion 1721 may be arranged on a side surface of the AF carrier 1210. The side plate portion 1721 may be arranged on an outer surface of the AF carrier 1210. In another embodiment, the side plate portion 1721 may be arranged on an inner surface of the AF carrier 1210. The side plate portion 1721 of the inner substrate 1720 may include a plurality of portions. The side plate portion 1721 may include first to fourth portions.

[0365] The inner substrate 1720 may include a first portion. The first portion may be disposed on the AF carrier 1210. The AF coil 1420 may be disposed on the first portion of the inner substrate 1720. The AF sensor 1430 may be disposed on the first portion of the inner substrate 1720. The AF yoke 1440 may be disposed on the first portion of the inner substrate 1720.

[0366] The inner substrate 1720 may include a second portion. The second portion may be disposed on the opposite side of the first portion. The second portion may be disposed on the AF carrier 1200. The second portion may be disposed on a second side of the AF carrier 1200. The OIS-y coil 1620 may be disposed on the second portion of the inner substrate 1720. The OIS-y sensor 1630 may be disposed on the second portion of the inner substrate 1720. More specifically, the OIS-y sensor 1630 may be disposed on an upper plate portion 1722 that is bent over and disposed above the second portion of the inner substrate 1720. The OIS-y sensor 1630 may be disposed on the lower surface of the upper plate portion 1722.

[0367] Inner substrate 1720 may include a third portion. The third portion may be disposed on AF carrier 1200. The third portion may be disposed on a third side surface of AF carrier 1200. OIS-x coil 1520 may be disposed on the third portion of inner substrate 1720. OIS-x sensor 1530 may be disposed on the third portion of inner substrate 1720. More specifically, OIS-x sensor 1530 may be disposed on an upper plate portion 1722 that is bent over and disposed above the third portion of inner substrate 1720. OIS-x sensor 1530 may be disposed on the lower surface of upper plate portion 1722.

[0368] The inner substrate 1720 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 1200. The fourth portion may be disposed on a fourth side of the AF carrier 1200.

[0369] The inner substrate 1720 may include a terminal 1721-1. The terminal 1721-1 may be disposed on a fourth portion of the inner substrate 1720. The terminal 1721-1 may be electrically connected to the coils 1420, 1520, and 1620. The terminal 1721-1 may be electrically connected to the sensors 1430, 1530, and 1630.

[0370] The lens driving device 1010 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 1100 in a specific direction.

[0371] The lens driving device 1010 may include an AF guide ball 1810. The AF guide ball 1810 can guide the movement of the AF moving unit 1200 relative to the fixed unit 1100 in the optical axis direction. The AF guide ball 1810 can guide the movement of the AF carrier 1210 relative to the base 1110 in the optical axis direction. The AF guide ball 1810 may be disposed between the fixed unit 1100 and the AF moving unit 1200. The AF guide ball 1810 may be disposed between the base 1110 and the AF carrier 1210. The AF guide ball 1810 may be disposed between the base 1110 and the AF carrier 1210 in the x direction. Alternatively, the AF guide ball 1810 may be disposed between the base 1110 and the AF carrier 1210 in the y direction. The AF guide ball 1810 may be disposed in a groove in the base 1110. The AF guide ball 1810 may be disposed in a groove in the AF carrier 1210. The AF guide ball 1810 may be spherical. The AF guide ball 1810 may be made of metal. Grease may be applied to the surface of the AF guide ball 1810.

[0372] The AF guide balls 1810 may be arranged at a first corner of the base 1110. The AF guide balls 1810 may be arranged at a second corner diagonally opposite the first corner of the base 1110. The AF guide balls 1810 may be arranged at each of the first and second corners of the base 1110. The first and second corner regions of the fixed part 1100 may be arranged diagonally opposite each other with respect to the optical axis. The AF guide balls 1810 may be arranged at each of the first and second corner regions of the fixed part 1100. Two sets of AF guide balls 1810 may be arranged at each of the first and second corners of the base 1110. 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 1210.

[0373] The AF guide balls 1810 may include a first unit ball disposed in a first corner region of the fixed part 1100 when viewed from above, and a second unit ball disposed in a second corner region diagonally opposite the first corner region of the fixed part 1100. In this case, the OIS guide balls 1820 may include a third unit ball and a fourth unit ball spaced apart from each other when viewed from above and diagonally opposite the first unit ball and the second unit ball of the AF guide balls 1810.

[0374] When viewed from above, the AF guide balls 1810 may include first and second unit balls arranged in a first corner region of the fixed part 1100, and third and fourth unit balls arranged in a second corner region diagonally opposite the first corner region of the fixed part 1100. Two sets of AF guide balls 1810 may be arranged at each corner.

[0375] The AF guide ball 1810 may include a ball that overlaps with the OIS guide ball 1820 in a direction perpendicular to the optical axis direction. At least a portion of the AF guide ball 1810 may overlap with the OIS guide ball 1820.

[0376] The AF guide ball 1810 may include an inner ball 1811. The inner ball 1811 may be disposed in the post portion 1111 of the base 1110. The inner ball 1811 may be disposed in the inner groove 1111-1 of the base 1110. The inner ball 1811 may be disposed in the inner groove 1224-1 of the AF carrier 1210. The inner ball 1811 may be disposed in the inner groove 1224-1 of the AF movement portion 1200. The inner ball 1811 may be disposed in the inner groove 1111-1 of the base 1110 and the inner groove 1224-1 of the AF carrier 1210. The inner ball 1811 may be disposed between the inner groove 1111-1 of the base 1110 and the inner groove 1224-1 of the AF carrier 1210. The inner ball 1811 may be disposed between the AF moving part 1200 and the post part 1111 of the fixed part 1100 .

[0377] The AF guide ball 1810 may include an outer ball 1812. The outer ball 1812 may be disposed on the outer wall portion 1112 of the base 1110. The outer ball 1812 may be disposed in the outer groove 1112-1 of the base 1110. The outer ball 1812 may be disposed in the outer groove 1224-2 of the AF carrier 1210. The outer ball 1812 may be disposed in the outer groove 1112-1 of the base 1110 and the outer groove 1224-2 of the AF carrier 1210. The outer ball 1812 may be disposed between the outer groove 1112-1 of the base 1110 and the outer groove 1224-2 of the AF carrier 1210. The outer ball 1812 may be disposed between the outer groove 1112-1 of the base 1110 and the outer groove 1224-2 of the AF carrier 1210. The outer ball 1812 may be disposed between the outer groove 1112-1 of the fixed portion 1100 and the outer groove 1224-2 of the AF moving portion 1200. The outer ball 1812 may be disposed between the AF moving part 1200 and the outer wall part 1112 of the fixed part 1100 .

[0378] The inner balls 1811 may include a plurality of inner balls 1811. The plurality of inner balls 1811 may be arranged in the optical axis direction. The inner balls 1811 may include four inner balls 1811. The inner balls 1811 may include first to fourth inner balls. Two of the four inner balls 1811 may have large diameters and the remaining two may have small diameters. The two large diameter balls may be arranged at the top and bottom. In other words, two small diameter balls may be arranged between two large diameter balls.

[0379] The inner balls 1811 may include an inner top cardboard box 1811-1. The inner top cardboard box 1811-1 may be positioned highest among the inner balls 1811. The inner top cardboard box 1811-1 may be positioned closest to the upper plate 1121 of the cover 1120 among the inner balls 1811. The inner balls 1811 may include an inner bottom cardboard box 1811-2. The inner bottom cardboard box 1811-2 may be positioned lowest among the inner balls 1811. The inner bottom cardboard box 1811-2 may be positioned closest to the lower plate portion of the base 1110 among the inner balls 1811. The multiple inner balls 1811 may include balls having a smaller diameter than each of the inner top cardboard box 1811-1 and the inner bottom cardboard box 1811-2. The plurality of inner balls 1811 may include balls disposed between an inner top cardboard 1811-1 and an inner bottom cardboard 1811-2.

[0380] The outer balls 1812 may include a plurality of outer balls 1812. The plurality of outer balls 1812 may be arranged in the optical axis direction. The outer balls 1812 may include four outer balls 1812. The outer balls 1812 may include first to fourth outer balls. Two of the four outer balls 1812 may have large diameters and the remaining two may have small diameters. The two balls with large diameters may be arranged at the top and bottom. In other words, two balls with small diameters may be arranged between two balls with large diameters.

[0381] The outer balls 1812 may include a top outer corrugated cardboard 1812-1. The top outer corrugated cardboard 1812-1 may be positioned highest among the outer balls 1812. The top outer corrugated cardboard 1812-1 may be positioned closest to the top plate 1121 of the cover 1120 among the outer balls 1812. The outer balls 1812 may include a bottom outer corrugated cardboard 1812-2. The bottom outer corrugated cardboard 1812-2 may be positioned lowest among the outer balls 1812. The bottom outer corrugated cardboard 1812-2 may be positioned closest to the bottom plate portion of the base 1110 among the outer balls 1812. The multiple outer balls 1812 may include balls having a smaller diameter than each of the top outer corrugated cardboard 1812-1 and the bottom outer corrugated cardboard 1812-2. The plurality of outer balls 1812 may include balls disposed between a top outer cardboard 1812-1 and a bottom outer cardboard 1812-2.

[0382] The AF guide ball 1810 may include a plurality of balls arranged in the optical axis direction. In this case, the plurality of balls may include uppermost cardboard boxes 1811-1 and 1812-1 arranged at the highest position and lowermost cardboard boxes 1811-2 and 1812-2 arranged at the lowest position. The height of the point at which the elastic member 1920 presses the plate member 1910 may be located between the heights of the uppermost cardboard boxes 1811-1 and 1812-1 and the height of the lowermost cardboard boxes 1811-2 and 1812-2.

[0383] The lens driving device 1010 may include an OIS guide ball 1820. The OIS guide ball 1820 can guide the movement of the OIS carrier 1310 relative to the AF carrier 1210 in a direction perpendicular to the optical axis. The OIS guide ball 1820 may be disposed between the AF movement unit 1200 and the OIS movement unit 1300. The OIS guide ball 1820 may be disposed between the AF carrier 1210 and the OIS carrier 1310. The OIS guide ball 1820 may be disposed between the AF carrier 1210 and the OIS carrier 1310 in the optical axis direction.

[0384] The OIS guide ball 1820 may be disposed between the preload member 1230 of the AF carrier 1210 and the OIS carrier 1310. The OIS guide ball 1820 may be pressed between the AF carrier 1210 and the OIS carrier 1310 by the pressing forces of the elastic members 1830, 1840, and 1850. The preload member 1230 may press the OIS guide ball 1820 downward during the process of coupling to the holder member 1220. The preload member 1230 may press the OIS guide ball 1820 toward the OIS carrier 1310 during the process of coupling to the holder member 1220. At this time, the OIS carrier 1310 can press the OIS guide ball 1820 toward the preload member 1230 due to the restoring forces of the elastic members 1830, 1840, and 1850. As a result, the OIS guide ball 1820 may be pressed between the preload member 1230 and the OIS carrier 1310.

[0385] The OIS guide ball 1820 can guide the movement of the OIS moving unit 1300 in the x-axis and y-axis directions. The OIS guide ball 1820 can guide the OIS carrier 1310 to move in the x-axis and y-axis directions, which are perpendicular to the optical axis direction, relative to the AF carrier 1210. That is, the OIS guide ball 1820 can guide the OIS carrier 1310 to move in the x-axis and y-axis directions. That is, the OIS guide ball 1820 can guide movement in both the x-axis and y-axis directions. For reference, compared to a comparative example in which a ball guiding in the x-axis direction and a ball guiding in the y-axis direction are separately provided, in the second embodiment of the present invention, which includes an integrated ball guiding in the x-axis direction and a ball guiding in the y-axis direction, the size of the lens driving device 1010 may be minimized. In particular, the height of the lens driving device 1010 in the optical axis direction may be reduced. This may minimize the height protruding from the smartphone, i.e., shoulder height. The OIS guide ball 1820 may include multiple balls. The OIS guide ball 1820 may include four balls.

[0386] Alternatively, the OIS guide ball 1820 may include separate balls for guiding x-axis direction drive and y-axis direction drive.

[0387] The lens driving device 1010 may include an elastic member. The elastic member may be formed to support OIS driving. The elastic member can support movement of the OIS moving unit 1300. The elastic member may be formed to pressurize the OIS guide ball 1820. The elastic member may be formed to guide both the OIS-x axis driving and the OIS-y axis driving using only the OIS guide ball 1820. The elastic member may include a leaf spring. The elastic member may include a wire. The elastic member may have elasticity. The elastic member may be made of metal.

[0388] The first support member may be disposed between the fixed unit 1100 and the AF moving unit 1200. The first support member may guide the AF moving unit 1200 to move in the optical axis direction. The second support member may be disposed between the AF moving unit 1200 and the OIS moving unit 1300. The second support member may guide the OIS moving unit 1300 to move in a direction perpendicular to the optical axis direction. One side of the third support member may be coupled to the AF moving unit 1200, and the other side may be coupled to the OIS moving unit 1300.

[0389] The AF moving unit 1200 may include a first elastic member. The OIS moving unit 1300 may include a second elastic member. The third support member may connect the first elastic member and the second elastic member. The third support member may include a wire 1850.

[0390] The lens driving device 1010 may include an upper elastic member 1830. The upper elastic member 1830 may be an "upper spring." The upper elastic member 1830 may be a leaf spring. The upper elastic member 1830 may have elasticity. The upper elastic member 1830 may be disposed on the OIS movement unit 1300. The upper elastic member 1830 may be disposed on an upper surface of the OIS movement unit 1300. The upper elastic member 1830 may be disposed on an upper surface of the OIS carrier 1310. The upper elastic member 1830 may be disposed on the OIS carrier 1310. The upper elastic member 1830 may be disposed on the upper part of the OIS carrier 1310. The upper elastic member 1830 may be disposed on top of the OIS carrier 1310. The upper elastic member 1830 may be disposed perpendicular to the optical axis.

[0391] The upper elastic member 1830 may include an inner portion 1831. The inner portion 1831 may be coupled to the OIS movement portion 1300. The upper elastic member 1830 may include an outer portion 1832. The outer portion 1832 may be coupled to the wire 1850. The upper elastic member 1830 may include a connecting portion 1833. The connecting portion 1833 may connect the inner portion 1831 and the outer portion 1832. The connecting portion 1833 may elastically connect the inner portion 1831 and the outer portion 1832. The connecting portion 1833 may have elasticity. The connecting portion 1833 may be an elastic portion.

[0392] The inner portion 1831 of the upper elastic member 1830 may be positioned lower than the outer portion 1832. The inner portion 1831 of the upper elastic member 1830 may be positioned lower than the outer portion 1832 by about a first distance. The reason why the inner portion 1831 of the upper elastic member 1830 is positioned lower than the outer portion 1832 may be due to the pressure force of the preload member 1230. With this configuration, the OIS guide ball 1820 may be maintained in contact with the preload member 1230 of the AF carrier 1210 and the OIS carrier 1310.

[0393] The lens driving device 1010 may include a lower elastic member 1840. The lower elastic member 1840 may be a "housing lower surface terminal" or a "housing lower surface plate." The lower elastic member 1840 may be a leaf spring. The lower elastic member 1840 may have elasticity. The lower elastic member 1840 may be disposed on the AF movement unit 1200. The lower elastic member 1840 may be disposed on the lower surface of the AF movement unit 1200. The lower elastic member 1840 may be disposed on the lower surface of the AF carrier 1210. The lower elastic member 1840 may be disposed on the AF carrier 1210. The lower elastic member 1840 may be disposed below the AF carrier 1210. The lower elastic member 1840 may be disposed perpendicular to the optical axis.

[0394] The lower elastic member 1840 may include an outer portion 1841. The outer portion 1841 may be coupled to the AF moving portion 1200. The lower elastic member 1840 may include an inner portion 1842. The inner portion 1842 may be coupled to the wire 1850. The lower elastic member 1840 may include a connecting portion 1843. The connecting portion 1843 may connect the outer portion 1841 and the inner portion 1842. The connecting portion 1843 may elastically connect the outer portion 1841 and the inner portion 1842. The connecting portion 1843 may have elasticity. The connecting portion 1843 may be an elastic portion.

[0395] The lens driving device 1010 may include a wire 1850. The wire 1850 may be a "side elastic member." The wire 1850 may be a wire. The wire 1850 may be a wire spring. The wire 1850 may be a suspension wire. The wire 1850 may have elasticity. The wire 1850 can connect the upper elastic member 1830 and the lower elastic member 1840. The wire 1850 can elastically connect the upper elastic member 1830 and the lower elastic member 1840. The wire 1850 may be arranged parallel to the optical axis. The wire 1850 may be arranged in the optical axis direction.

[0396] The height of the point at which the elastic member 1920 presses the plate member 1910 may be lower than the height of the lowermost ball among the inner top cardboard 1811-1 and the outer top cardboard 1812-1, and higher than the height of the highermost ball among the inner bottom cardboard 1811-2 and the outer bottom cardboard 1812-2. More specifically, when the AF moving unit 1200 moves upward as shown in (a) of Figure 77, the height b of the point at which the elastic member 1920 presses the plate member 1910 may be higher than the height a of the highermost ball among the inner bottom cardboard 1422 and the outer bottom cardboard 1412. A gap c may exist between the heights of the two points. 77(b), when the AF moving unit 1200 moves downward, the height e of the point at which the elastic member 1920 presses the plate member 1910 may be lower than the height d of the lower one of the inner top cardboard 1421 and the outer top cardboard 1411. A gap f may exist between the heights of the two points. This may prevent or minimize the generation of a moment caused by the elastic member 1920 pressing the plate member 1910. In other words, the phenomenon of the plate member 1910 tilting or coming off may be prevented.

[0397] The lens driving device 1010 may include a pressure member. The pressure member may be an "AF guide ball pressure member." The pressure member can pressurize the AF guide ball 1810. The pressure member may be configured to pressurize the ball. The AF guide ball 1810 pressed by the pressure member may be sandwiched between the fixed unit 1100 and the AF movement unit 1200. The AF guide ball 1810 pressed by the pressure member may be sandwiched between the base 1110 and the AF carrier 1210. The pressure member can maintain the AF guide ball 1810 in contact with the fixed unit 1100 and the AF movement unit 1200. The pressure member can maintain the AF guide ball 1810 in contact with the base 1110 and the AF carrier 1210.

[0398] The lens driving device 1010 may include a plate member 1910. The pressure member may include the plate member 1910. The plate member 1910 may be disposed on the AF guide ball 1810. The plate member 1910 may be in contact with the AF guide ball 1810. The plate member 1910 may be disposed on the elastic member 1920. The plate member 1910 may be disposed on the base 1110. The plate member 1910 may be disposed between the elastic member 1920 and the AF guide ball 1810. The plate member 1910 can press the AF guide ball 1810 against the AF carrier 1210 by the elastic member 1920. The plate member 1910 may be disposed between the AF guide ball 1810 and the fixed part 1100. The plate member 1910 may be disposed between the inner ball 1811 and the pillar portion 1111 of the fixed part 1100.

[0399] The lens driving device 1010 may include an elastic member 1920. The pressure member may include the elastic member 1920. The elastic member 1920 may be a spring. The elastic member 1920 may be a tapered spring. The elastic member 1920 may be disposed on the fixed portion 1100. The elastic member 1920 can press the AF guide ball 1810 toward the AF moving portion 1200. The elastic member 1920 can press the plate member 1910 toward the AF guide ball 1810. The elastic member 1920 may be disposed between the plate member 1910 and the fixed portion 1100. The elastic member 1920 can push the plate member 1910 against the fixed portion 1100. The elastic member 1920 can press the plate member 1910 in the opposite direction to the fixed portion 1100. The elastic member 1920 may be disposed between the plate member 1910 and the pillar portion 1111 of the fixed portion 1100. The elastic member 1920 may be disposed in the inner groove 1111-1 of the fixing portion 1100.

[0400] The elastic member 1920 can apply pressure to the AF guide ball 1810 so that it is supported by the fixed part 1100. The elastic member 1920 can apply pressure to the inner ball 1811 so that it is supported by the fixed part 1100. The elastic member 1920 can apply pressure to the outer ball 1812 so that it is supported by the fixed part 1100.

[0401] As a modified example, the elastic member 1920 may be disposed in the AF moving part 1200. In this case, the elastic member 1920 can press the AF guide ball 1810 toward the fixed part 1100. The elastic member 1920 is disposed in one of the fixed part 1100 and the AF moving part 1200 and can press the AF guide ball 1810 toward the other of the fixed part 1100 and the AF moving part 1200. The elastic member 1920 can press the plate member 1910. The elastic member 1920 may be disposed between the plate member 1910 and the base 1110. The elastic member 1920 may be disposed between the AF guide ball 1810 and the base 1110. The elastic member 1920 may be disposed in the base 1110. The elastic member 1920 may be disposed in the inner groove 1111-1 of the base 1110. The elastic member 1920 can press the AF guide balls 1810 toward the AF carrier 1210. This allows the AF guide balls 1810 to be maintained in contact with the plate member 1910 and the AF carrier 1210.

[0402] The elastic member 1920 may include a folded portion. The folded portion may include a folded shape. The folded portion may include multiple folded portions. The folded portion may include three folded portions. The elastic member 1920 may be folded at least three times. The elastic member 1920 may include an upper folded portion 1921. The elastic member 1920 may include a lower folded portion 1922. The elastic member 1920 may include a connecting folded portion 1923. The connecting folded portion 1923 may be disposed between the upper folded portion 1921 and the lower folded portion 1922. The upper folded portion 1921 may form an obtuse angle. The lower folded portion 1922 may form an obtuse angle. The connecting folded portion 1923 may form an obtuse angle. The upper folded portion 1921 may be disposed on the fixing portion 1100. The lower bent portion 1922 may be disposed on the fixed portion 1100. The connecting bent portion 1923 may be disposed on the plate member 1910. With such a structure, the elastic member 1920 can push the plate member 1910 against the fixed portion 1100. The connecting bent portion 1923 can come into contact with the plate member 1910 and press the plate member 1910 in the direction of the AF guide ball 1810.

[0403] The lens driving device 1010 may include a reinforcing member 1930. The reinforcing member 1930 may be disposed on the base 1110. The reinforcing member 1930 may be disposed to reinforce the strength of the base 1110. The reinforcing member 1930 can prevent damage to the base 1110. The reinforcing member 1930 can prevent damage to the column portion 1111 of the base 1110. The reinforcing member 1930 can prevent damage to the outer wall portion 1112 of the base 1110. The reinforcing member 1930 may have elasticity. The reinforcing member 1930 may be formed of metal. The reinforcing member 1930 may have a shape that is bent at least twice. The reinforcing member 1930 may be formed in a U-shape when viewed from above. The reinforcing member 1930 can open inward.

[0404] The reinforcing member 1930 may include an inner portion 1931. The inner portion 1931 may be arranged on the opposite side of the inner groove 1111-1 of the post portion 1111 of the fixing portion 1100. The reinforcing member 1930 may include an outer portion 1932. The outer portion 1932 may be arranged on the opposite side of the outer groove 1112-1 of the outer wall portion 1112 of the fixing portion 1100. The reinforcing member 1930 may include a connecting portion 1933. The connecting portion 1933 can connect the inner portion 1931 and the outer portion 1932.

[0405] The lens driving device 1010 may include a cover 1940. The cover 1940 may be disposed on the AF guide ball 1810. The cover 1940 may overlap the AF guide ball 1810 in the optical axis direction. The cover 1940 may overlap the inner ball 1811 in the optical axis direction. The cover 1940 may overlap the outer ball 1812 in the optical axis direction. The cover 1940 may be disposed on the inner groove 1224-1 and the outer groove 1224-2 of the AF carrier 1210 to prevent the AF guide ball 1810 from coming off upward.

[0406] The configuration of the lens driving device according to the modified example will be described below with reference to the drawings.

[0407] Fig. 78 is a cross-sectional view of a lens driving device according to a modified example cut in a direction perpendicular to the optical axis and viewed from above. Fig. 79 is an exploded perspective view of a portion of the configuration of a lens driving device according to a modified example.

[0408] A lens driving device according to a modified example may include an AF driving unit 1400. In this modified example, the positions of the AF coil 1420-1 and the AF magnet 1410-1 may be reversed compared to the second embodiment of the present invention. That is, in this modified example, the AF coil 1420-1 may be disposed in the fixed unit 1100, and the magnet 1410-1 may be disposed in the AF moving unit 1200.

[0409] The lens driving device may include an AF magnet 1410-1. The AF driving unit 1400 may include an AF magnet 1410-1. The AF magnet 1410-1 may be disposed in the AF movement unit 1200. The AF magnet 1410-1 may be disposed in the AF carrier 1210. The AF magnet 1410-1 may be disposed between the AF coil 1420-1 and the AF carrier 1210. The AF magnet 1410-1 may be disposed inside the AF coil 1420-1. The AF magnet 1410-1 may overlap with the AF coil 1420-1 in a direction perpendicular to the optical axis. The AF magnet 1410-1 may face the AF coil 1420-1. The AF magnet 1410-1 may face the AF coil 1420-1. The AF magnet 1410-1 may be disposed at a position corresponding to the AF coil 1420-1. The AF magnet 1410-1 can interact with the AF coil 1420-1. The AF magnet 1410-1 can electromagnetically interact with the AF coil 1420-1. The AF magnet 1410-1 can move. The AF magnet 1410-1 may be movably arranged. The AF magnet 1410-1 can move during AF driving. The AF magnet 1410-1 can move together with the AF carrier 1210. The AF magnet 1410-1 can move in the optical axis direction. The lens driving device may include the AF coil 1420-1.

[0410] The AF driving unit 1400 may include an AF coil 1420-1. The AF coil 1420-1 may be disposed on a substrate 1700-1. The AF coil 1420-1 may be disposed on the fixed unit 1100. The AF coil 1420-1 may be disposed on the base 1110. The AF coil 1420-1 may be disposed on the cover 1120. The AF coil 1420-1 may be disposed outside the AF magnet 1410-1. The AF coil 1420-1 may be disposed between a side plate 1122 of the cover 1120 and the AF magnet 1410-1. The AF coil 1420-1 may be fixed. The AF coil 1420-1 may be maintained in a fixed state even during AF driving.

[0411] The lens driving device may include an AF sensor 1430-1. The AF driving unit 1400 may include an AF sensor 1430-1. The AF sensor 1430-1 can sense the AF magnet 1410-1. The AF sensor 1430-1 may be disposed on the substrate 1700-1. The AF sensor 1430-1 may be disposed within the AF coil 1420-1. The AF sensor 1430-1 may be a hole sensor. The amount of movement or position of the AF magnet 1410-1 sensed by the AF sensor 1430-1 can be used as feedback for autofocus driving.

[0412] The lens driving device may include an AF yoke 1440-1. The AF driving unit 1400 may include an AF yoke 1440-1. The AF yoke 1440-1 may be disposed at a position corresponding to the AF magnet 1410-1. The AF yoke 1440-1 may be disposed on the AF magnet 1410-1. The AF yoke 1440-1 may be disposed between the magnet 1320 and the AF carrier 1210. The AF yoke 1440-1 may be disposed on the inner surface of the AF magnet 1410-1. The outer surface of the AF magnet 1410-1 may face the AF coil 1420-1. This allows the AF yoke 1440-1 to minimize magnetic flux leakage from the AF magnet 1410-1 and enhance the electromagnetic interaction force between the AF magnet 1410-1 and the AF coil 1420-1.

[0413] The lens driving device may include a substrate 1700-1. The substrate 1700-1 may be disposed on the fixed portion 1100. The substrate 1700-1 may be disposed on the base 1110. The substrate 1700-1 may be disposed on the cover 1120. The substrate 1700-1 may be disposed on the side plate 1122 of the cover 1120. The substrate 1700-1 may be disposed on the inner surface of the side plate 1122 of the cover 1120. The substrate 1700-1 may be disposed on the outer surface of the side plate 1122 of the cover 1120. The substrate 1700-1 may be disposed parallel to the optical axis. The AF coil 1420-1 and the AF sensor 1430-1 may be disposed on the substrate 1700-1. The substrate 1700-1 may include a printed circuit board. The substrate 1700-1 may include a flexible printed circuit board (FPCB).

[0414] The lens driving device according to the modified example may include one or more of a fixed portion 1100, an AF moving portion 1200, an OIS moving portion 1300, an OIS-x driving portion 1500, an OIS-y driving portion 1600, substrates 1710, 1720, balls 1810, 1820, elastic members 1830, 1840, 1850, a plate member 1910, an elastic member 1920, a reinforcing member 1930, and a cover 1940. In this case, the descriptions of the corresponding components in the second embodiment of the present invention can be similarly applied to the descriptions of the fixed unit 1100, the AF moving unit 1200, the OIS moving unit 1300, the OIS-x driving unit 1500, the OIS-y driving unit 1600, the substrates 1710, 1720, the balls 1810, 1820, the elastic members 1830, 1840, 1850, the plate member 1910, the elastic member 1920, the reinforcing member 1930, and the cover 1940.

[0415] The second embodiment and its modifications of the present invention have the advantage of eliminating centering force in the optical axis direction of the yoke, compared to the comparative example in which a tapered spring is used to pressurize the balls through the attractive force between the yoke and the magnet. Furthermore, by arranging the AF guide balls 1810 diagonally, it is possible to prevent the AF moving unit 1200 from rotating or tilting and ensure the necessary adhesion. However, as a modification, two sets of the AF guide balls 1810 may be arranged on one side of the fixed unit 1100, rather than diagonally. As another modification, the AF guide balls 1810 may be used as a shaft structure to minimize tilt of the module, i.e., the AF moving unit 1200.

[0416] Hereinafter, autofocus (AF) driving of a lens driving device according to a second embodiment of the present invention will be described with reference to the drawings.

[0417] Fig. 80 to Fig. 82 are diagrams illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention. Fig. 80 is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil. Fig. 81 is a cross-sectional view illustrating the state when a forward current is applied to the AF coil and the moving part has moved upward in the optical axis direction. Fig. 82 is a cross-sectional view illustrating the state when a reverse current is applied to the AF coil and the moving part has moved downward in the optical axis direction.

[0418] 80 , the moving unit may be disposed at a position separated from both the upper plate 1121 of the cover 1120 and the base 1110 from an initial position where no current is applied to the AF coil 1420. In this case, the moving unit may be the AF moving unit 1200. Furthermore, the moving unit may include the AF moving unit 1200 and the OIS moving unit 1300.

[0419] When a forward current is applied to the AF coil 1420, the AF coil 1420 can move upward in the optical axis direction due to electromagnetic interaction between the AF coil 1420 and the AF magnet 1410 (see A in FIG. 81 ). At this time, the AF carrier 1210 can move upward in the optical axis direction together with the AF coil 1420. Furthermore, the OIS carrier 1310 and the lens can move upward in the optical axis direction together with the AF carrier 1210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor via the lens may be adjusted.

[0420] When a reverse current is applied to the AF coil 1420, the AF coil 1420 can move downward in the optical axis direction due to electromagnetic interaction between the AF coil 1420 and the AF magnet 1410 (see B in FIG. 82). At this time, the AF carrier 1210 can move downward in the optical axis direction together with the AF coil 1420. Furthermore, the OIS carrier 1310 and the lens can move downward in the optical axis direction together with the AF carrier 1210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor via the lens may be adjusted.

[0421] Meanwhile, during the movement of the AF coil 1420, the AF sensor 1430 moves together with the AF coil 1420 and senses the strength of the magnetic field of the AF magnet 1410, thereby detecting the amount of movement and position of the lens in the optical axis direction. The amount of movement and position of the lens in the optical axis direction detected by the AF sensor 1430 can be used for autofocus feedback control.

[0422] Hereinafter, optical image stabilization (OIS) driving of a lens driving device according to a second embodiment of the present invention will be described with reference to the drawings.

[0423] Fig. 83 to Fig. 85 are diagrams illustrating the image stabilization drive of a lens driving device according to a second embodiment of the present invention. Fig. 83 is a cross-sectional view illustrating the state of the OIS moving section in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig. 84 is a cross-sectional view illustrating the 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. Fig. 85 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the OIS moving section moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0424] 83, the moving part may be placed in the initial position with no current applied to the OIS-x coil 1520 and the OIS-y coil 1620. At this time, the moving part may be the OIS moving part 1300.

[0425] When a current is applied to the OIS-x coil 1520, electromagnetic interaction between the OIS-x coil 1520 and the OIS-x magnet 1510 causes the OIS-x magnet 1510 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 84 ). At this time, the OIS carrier 1310 moves in the x-axis direction together with the OIS-x magnet 1510. Furthermore, the lens moves in the x-axis direction together with the OIS carrier 1310. More specifically, when a forward current is applied to the OIS-x coil 1520, the OIS-x magnet 1510, OIS carrier 1310, and lens move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 1520, the OIS-x magnet 1510, OIS carrier 1310, and lens move in the other direction on the x-axis.

[0426] When a current is applied to the OIS-y coil 1620, electromagnetic interaction between the OIS-y coil 1620 and the OIS-y magnet 1610 causes the OIS-y magnet 1610 to move in the y-axis direction, which is perpendicular to the optical axis (see B in FIG. 85 ). At this time, the OIS carrier 1310 moves in the y-axis direction together with the OIS-y magnet 1610. Furthermore, the lens moves in the y-axis direction together with the OIS carrier 1310. More specifically, when a forward current is applied to the OIS-y coil 1620, the OIS-y magnet 1610, the OIS carrier 1310, and the lens move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 1620, the OIS-y magnet 1610, the OIS carrier 1310, and the lens move in the other direction on the y-axis.

[0427] Meanwhile, the OIS-x sensor 1530 senses the strength of the magnetic field of the OIS-x magnet 1510 and can sense the amount of movement and position of the OIS-x magnet 1510. The amount of movement and position sensed by the OIS-x sensor 1530 can be used for x-axis direction image stabilization feedback control. The OIS-y sensor 1630 senses the strength of the magnetic field of the OIS-y magnet 1610 and can sense the amount of movement and position of the OIS-y magnet 1610. The amount of movement and position sensed by the OIS-y sensor 1630 can be used for y-axis direction image stabilization feedback control.

[0428] A camera device according to a second embodiment of the present invention will now be described with reference to the drawings.

[0429] FIG. 86 is an exploded perspective view of a camera device according to a second embodiment of the present invention.

[0430] The camera device 1010A may include a camera module.

[0431] The camera device 1010A may include a lens module 1020. The lens module 1020 may include at least one lens. The lens may be disposed at a position corresponding to the image sensor 1060. The lens module 1020 may include a lens and a barrel. The lens module 1020 may be coupled to the OIS carrier 1310 of the lens driving device 1010. The lens module 1020 may be coupled to the OIS carrier 1310 by a screw connection and / or an adhesive. The lens module 1020 may move integrally with the OIS carrier 1310.

[0432] The camera device 1010A may include a filter 1030. The filter 1030 can block light of a specific frequency band from passing through the lens module 1020 from entering the image sensor 1060. The filter 1030 may be arranged parallel to the xy plane. The filter 1030 may be arranged between the lens module 1020 and the image sensor 1060. The filter 1030 may be arranged on the sensor base 1040. Alternatively, the filter 1030 may be arranged on the base 1110. The filter 1030 may include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 1060.

[0433] The camera device 1010A may include a sensor base 1040. The sensor base 1040 may be disposed between the lens driver 1010 and the printed circuit board 1050. The sensor base 1040 may include a protrusion 1041 on which the filter 1030 is disposed. An opening may be formed in the portion of the sensor base 1040 where the filter 1030 is disposed so that light passing through the filter 1030 can enter the image sensor 1060. An adhesive member may bond or adhere the base 1110 of the lens driver 1010 to the sensor base 1040. The adhesive member may also serve to prevent foreign matter from entering the interior of the lens driver 1010. The adhesive member may include one or more of epoxy, a heat-curable adhesive, and an ultraviolet-curable adhesive.

[0434] The camera device 1010A may include a printed circuit board (PCB) 1050. The printed circuit board 1050 may be a substrate or a circuit board. The lens driving device 1010 may be disposed on the printed circuit board 1050. A sensor base 1040 may be disposed between the printed circuit board 1050 and the lens driving device 1010. The printed circuit board 1050 may be electrically connected to the lens driving device 1010. The image sensor 1060 may be disposed on the printed circuit board 1050. The printed circuit board 1050 may include various circuits, elements, a control unit, etc. for converting an image formed on the image sensor 1060 into an electrical signal and transmitting the signal to an external device.

[0435] The camera device 1010A may include an image sensor 1060. The image sensor 1060 may be configured to form an image by receiving light that has passed through a lens and a filter 1030. The image sensor 1060 may be mounted on a printed circuit board 1050. The image sensor 1060 may be electrically connected to the printed circuit board 1050. For example, the image sensor 1060 may be coupled to the printed circuit board 1050 using surface mounting technology (SMT). For another example, the image sensor 1060 may be coupled to the printed circuit board 1050 using flip chip technology. The image sensor 1060 may be disposed such that its optical axis coincides with that of a lens. That is, the optical axis of the image sensor 1060 and the optical axis of the lens may be aligned. The image sensor 1060 may convert light irradiated onto an effective image area of ​​the image sensor 1060 into an electrical signal. The image sensor 1060 may be any of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0436] The camera device 1010A may include a motion sensor 1070. The motion sensor 1070 may be mounted on the printed circuit board 1050. The motion sensor 1070 may be electrically connected to the control unit 1080 via a circuit pattern provided on the printed circuit board 1050. The motion sensor 1070 may output rotational angular velocity information according to the movement of the camera device 1010A. The motion sensor 1070 may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0437] The camera device 1010A may include a control unit 1080. The control unit 1080 may be disposed on the printed circuit board 1050. The control unit 1080 may be electrically connected to the coils 1330 of the lens driving device 1010. The control unit 1080 may individually control the direction, strength, amplitude, etc. of the current supplied to the coils 1330. The control unit 1080 may control the lens driving device 1010 to perform an autofocus function and / or an image stabilization function. Furthermore, the control unit 1080 may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device 1010.

[0438] The camera device 1010A may include a connector 1090. The connector 1090 may be electrically connected to the printed circuit board 1050. The connector 1090 may include a port for electrically connecting to an external device.

[0439] An optical apparatus according to a second embodiment of the present invention will now be described with reference to the drawings.

[0440] FIG. 87 is a perspective view of an optical apparatus according to a second embodiment of the present invention, and FIG. 88 is a perspective view of an optical apparatus according to a modified example.

[0441] The optical device 1001 may include one or more of a mobile terminal, 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 also include any device for taking videos or photos.

[0442] The optical device 1001 may include a main body 1020. The optical device 1001 may include a camera device 1010A. The camera device 1010A may be disposed in the main body 1020. The camera device 1010A may be capable of photographing an object. The optical device 1001 may include a display. The display may be disposed in the main body 1020. The display may output one or more of a video and an image photographed by the camera device 1010A. The display may be disposed on a first surface of the main body 1020. The camera device 1010A may be disposed on one or more of the first surface and a second surface opposite the first surface of the main body 1020. As shown in FIG. 87, the camera device 1010A may have triple cameras arranged vertically. As shown in FIG. 88, the camera device 1010A-1 may have triple cameras arranged horizontally.

[0443] Although the first and second embodiments have been described separately above, a portion of the configuration of the first embodiment and a portion of the configuration of the second embodiment may be mixed together. That is, a portion of the configuration of the first embodiment may be replaced with a corresponding portion of the second embodiment. Furthermore, a portion of the configuration of the second embodiment may be replaced with a corresponding portion of the first embodiment. Furthermore, a third embodiment of the present invention may include both a portion of the configuration of the first embodiment and a portion of the configuration of the second embodiment.

[0444] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and are not limiting.

Claims

1. Fixed part; a first movable portion disposed within the fixed portion; a second moving part disposed within the first moving part; a first drive unit that moves the first moving unit in the optical axis direction; a second drive unit that moves the second moving unit in a direction perpendicular to the optical axis direction; a plate member disposed between the fixed portion and the first movable portion; a first ball portion disposed between the plate member and the first moving portion; an elastic member disposed between the fixing portion and the plate member; and a second ball portion disposed between the fixed portion and the first moving portion; The elastic member applies pressure to the second ball portion so that the second ball portion is supported by the fixed portion.

2. the fixing portion includes a base, and a first protrusion and a second protrusion protruding from the base in the optical axis direction, the first moving portion includes a first carrier and a third protruding portion protruding from the first carrier in a first direction perpendicular to the optical axis direction, the first ball portion is disposed between the plate and the first protrusion, The lens driving device according to claim 1 , wherein the second ball portion is disposed between the second protrusion and the third protrusion.

3. The lens driving device according to claim 2 , wherein the first protrusion and the second protrusion are disposed in a first corner region of the base.

4. The lens driving device according to claim 1 , further comprising a second ball disposed between the first moving portion and the second moving portion.

5. a first ball including the first ball portion and the second ball portion; 5. The lens driving device of claim 4, wherein the first balls include, when viewed from above, a first unit ball arranged in a first corner region of the fixed portion and a second unit ball arranged in a second corner region diagonally opposite the first corner region of the fixed portion.

6. 6. The lens driving device according to claim 5, wherein the second balls include third and fourth unit balls that are spaced apart from each other when viewed from above and are disposed between the first and second unit balls in the diagonal direction.

7. The lens driving device according to claim 5 , wherein the first ball includes a ball that overlaps with the second ball in a direction perpendicular to the optical axis direction.

8. The lens driving device according to claim 1 , wherein the first driving section includes a first magnet arranged on the fixed section and a first coil arranged on the first moving section.

9. a first substrate disposed on the first moving part; and a second substrate connecting the fixing portion and the first substrate; The lens driving device according to claim 8 , wherein the first coil is disposed on the first substrate.

10. the second driving unit includes a second magnet and a second coil that move the second moving unit in a first direction perpendicular to the optical axis direction, and a third magnet and a third coil that move the second moving unit in a second direction perpendicular to the optical axis direction and the first direction, The lens driving device according to claim 9 , wherein the second coil and the third coil are disposed on the first substrate.

Images