Lens drive device, camera device and optical equipment

Abstract

A first embodiment of the present invention relates to a lens driving device including 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 a direction perpendicular to the optical axis; and a second driving section that moves the second moving section in the optical axis direction, wherein the second driving section includes a first magnet disposed in the second moving section and a first coil disposed in the fixed section, arranged opposite the first magnet.

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] Conventionally, an image stabilization module that performs an image stabilization function is located within an autofocus module that performs an autofocus function.

[0005] In this case, since the image stabilization module must be moved along with the lens for autofocusing, the size and weight of the magnet for autofocusing increases.

[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] In addition, in order to arrange components such as magnets and coils for performing the autofocus function and image stabilization function, a size larger than the thickness of the smartphone is required in the optical axis direction, which causes the camera device attached to the smartphone to protrude from other parts of the smartphone. [Prior art documents] [Patent documents]

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

[0009] A first embodiment of the present invention provides a lens driving device in which an autofocus module is disposed within an image stabilization module, that is, a lens driving device in which the image stabilization module does not move during autofocus driving.

[0010] A second embodiment of the present invention provides a camera device that has an autofocus function and an image stabilization function, but has a minimized size in the optical axis direction. [Means for solving the problem]

[0011] A lens driving device according to a first embodiment of the present invention includes a fixed portion; a first moving portion arranged within the fixed portion; a second moving portion arranged within the first moving portion; a first driving portion that moves the first moving portion in a direction perpendicular to the optical axis; and a second driving portion that moves the second moving portion in the optical axis direction, and the second driving portion can include a first magnet arranged in the second moving portion and a first coil arranged opposite the first magnet and arranged in the fixed portion.

[0012] A lens driving device according to a first embodiment of the present invention includes a fixed portion; a first movable portion including a first carrier movable in an x-axis perpendicular to the optical axis direction and a second carrier movable in a y-axis perpendicular to the optical axis direction; a second movable portion disposed within the first movable portion and movable in the optical axis direction; a first magnet disposed in the second movable portion; a second magnet disposed in the first carrier; a third magnet disposed in the second carrier; a first coil disposed opposite the first magnet; a second coil disposed opposite the second magnet in the optical axis direction; and a third coil disposed opposite the third magnet in the optical axis direction, wherein the first coil may be disposed on a first side surface of the fixed portion.

[0013] A lens driving device according to a first embodiment of the present invention includes a coil section; a housing arranged on the coil section; a first carrier movable in an x-axis perpendicular to the optical axis direction; a second carrier movable in a y-axis perpendicular to the optical axis direction; a bobbin arranged in the second carrier; a first magnet arranged on the bobbin; a second magnet arranged on the first carrier; a third magnet arranged on the second carrier; a first ball arranged between the housing and the first carrier; and a second ball arranged between the first carrier and the second carrier, and the coil section includes a second coil arranged to face the second magnet in the optical axis direction and a third coil arranged to face the third magnet in the optical axis direction.

[0014] The third magnet may be disposed between the second carrier and the third coil, and may be disposed lower than the second ball.

[0015] The housing may be stationary.

[0016] The lens driving device may include a first coil disposed in the housing and facing the first magnet.

[0017] The lens driving device may include a third ball disposed between the bobbin and the second carrier.

[0018] The second carrier may include a protrusion that protrudes in a direction of the third coil, and the third magnet may be disposed on the protrusion.

[0019] The first carrier may include a groove into which the protrusion is inserted.

[0020] The second magnet and the third magnet may overlap with an imaginary plane perpendicular to the optical axis direction.

[0021] The virtual plane and the first magnet do not have to overlap.

[0022] The lens driving device may include a first substrate disposed in the housing, and the first coil may be disposed on the first substrate.

[0023] The first coil may be disposed on an inner surface of the first substrate, a yoke may be disposed on an outer surface of the first substrate, and an attractive force may act between the first magnet and the yoke.

[0024] When the second carrier is moved by the third magnet and the third coil, the bobbin may also move together with the second carrier, and the distance between the first magnet and the first coil may change.

[0025] When the bobbin is moved by the first magnet and the first coil, the distance between the first magnet and the first coil in the y-axis direction may be maintained constant, and when the first carrier, the second carrier and the bobbin are moved together by the second magnet and the second coil, the distance between the first magnet and the first coil in the y-axis direction may be maintained constant.

[0026] The lens driving device may include a base, the coil section may include a second substrate disposed on the base, and the second coil and the third coil may be disposed on the second substrate.

[0027] The second coil and the third coil may be arranged on the upper surface of the second substrate, a yoke may be arranged on the lower surface of the second substrate at a position corresponding to the second coil and the third coil, and the base may include a groove formed concavely on the upper surface of the base in which the yoke is arranged.

[0028] The first magnet may include an outer surface facing the first coil, an inner surface opposite the outer surface, an upper surface, a lower surface, both side surfaces, and a chamber surface connecting the inner surface and both side surfaces.

[0029] 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; a lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0030] The optical device according to 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 at least one of a video and an image captured by the camera device.

[0031] A lens driving device according to a second embodiment of the present invention includes a fixed part; a second movable part arranged on the fixed part; a first movable part arranged within the second movable part; a first coil and a first magnet that move the first movable part in the optical axis direction; a second coil and a second magnet that move the second movable part in a first direction perpendicular to the optical axis direction; and a first yoke arranged at a position corresponding to the first magnet, wherein the first magnet may be arranged on the first movable part and the first yoke may be arranged on the second movable part.

[0032] The lens driving device includes a first ball disposed between the first moving part and the second moving part, and the first ball can be pressed between the first moving part and the second moving part by an attractive force between the first magnet and the first yoke.

[0033] The first magnet may overlap the first yoke in the first direction.

[0034] The first yoke may include a first unit yoke and a second unit yoke that are spaced apart from each other, and the first magnet may be disposed between the first unit yoke and the second unit yoke in the first direction.

[0035] The first magnet may include a first surface facing the first coil and a second surface opposite the first surface, and in the first direction, the width of the first surface of the first magnet may be smaller than the width of the second surface of the first magnet.

[0036] The lens driving device may include a third moving part arranged between the fixed part and the second moving part; and a third coil and a third magnet that move the third moving part in a second direction perpendicular to the optical axis direction and the first direction.

[0037] The first magnet may not overlap the first yoke in the second direction.

[0038] The first moving part may include a first surface, the second moving part may include a first surface facing in the same direction as the first surface, the first magnet may be disposed on the first surface of the first moving part, and the first yoke may be disposed on the first surface of the second moving part.

[0039] The second moving portion may include a groove formed in a concave shape on the first surface of the second moving portion, and the first yoke may be disposed in the groove of the second moving portion.

[0040] The second magnet may overlap the second coil in the optical axis direction.

[0041] The third magnet may overlap the third coil in the optical axis direction.

[0042] The lens driving device may include a second ball arranged between the second moving part and the third moving part; and a second yoke that exerts an attractive force on the second magnet, wherein the second magnet is arranged on the second moving part and the second yoke is arranged on the fixed part.

[0043] The lens driving device may include a third ball arranged between the fixed portion and the third moving portion; and a third yoke that exerts an attractive force on the third magnet, wherein the third magnet is arranged on the third moving portion and the third yoke is arranged on the second moving portion.

[0044] The magnet may further include a fourth yoke that acts on the third magnet with an attractive force, and the fourth yoke may be disposed on the fixed portion.

[0045] The lens driving device may include a fourth magnet disposed on the second moving portion; and a fifth yoke that exerts an attractive force on the fourth magnet, and the fifth yoke may be disposed on the fixed portion.

[0046] 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; the lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0047] The optical device according to the second 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 at least one of a video and an image captured by the camera device. [Effects of the Invention]

[0048] According to the first embodiment of the present invention, the autofocus module is disposed within the image stabilization module, so that the image stabilization module does not need to be moved during autofocus operation.

[0049] This reduces the electromagnetic force required for autofocus drive, allowing the size and weight of the magnet used for autofocus drive to be reduced, making it possible to mount a lens with a larger diameter and weight.

[0050] More specifically, since the length of the AF stroke is longer than the length of the OIS stroke, a reduction in the weight of the AF movement unit that moves over a relatively long AF stroke section can lead to a reduction in power consumption.

[0051] In addition, in the first embodiment of the present invention, the coil for image stabilization is located at the bottom, which reduces the size of the lens driving device in the direction perpendicular to the optical axis. The coil for image stabilization may be located below the magnet.

[0052] According to the second embodiment of the present invention, the autofocus function and the image stabilization function can be performed in a camera device that is minimized in size in the optical axis direction.

[0053] The camera device according to the second embodiment of the present invention may not protrude from the smartphone, or may protrude only minimally from the smartphone.

[0054] According to a second embodiment of the present invention, a camera device that does not protrude from a smartphone or that protrudes only minimally can perform both autofocus and image stabilization functions.

[0055] Furthermore, the second embodiment of the present invention may provide a camera device that is minimized in size in both the horizontal and vertical directions perpendicular to the optical axis.

[0056] In addition, since both the north and south pole areas of the magnet are used, the Hall sensor has the advantage of making the most of the linear section of the Hall output. [Brief explanation of the drawings]

[0057] [Figure 1] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 2 is a cross-sectional view taken along the line BB in FIG. [Figure 4] FIG. 2 is a cross-sectional view taken along CC in FIG. [Figure 5] FIG. 2 is a cross-sectional view taken along the line DD in FIG. [Figure 6]1 is a cross-sectional view of a lens driving device according to a first embodiment of the present invention, taken in a direction perpendicular to the optical axis. [Figure 7] 1A to 1C are exploded perspective views of a lens driving device according to a first embodiment of the present invention, as viewed from different directions. [Figure 8] 1A to 1C are exploded perspective views of a lens driving device according to a first embodiment of the present invention, as viewed from different directions. [Figure 9] 1A to 1C are exploded perspective views of a lens driving device according to a first embodiment of the present invention, as viewed from different directions. [Figure 10] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention, with a cover omitted. [Figure 11] 1 is an exploded perspective view illustrating the coupling structure of a base, an OIS board, and related components of a lens driving device according to a first embodiment of the present invention. FIG. [Figure 12] 1 is a perspective view illustrating a part of a fixing portion and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 13] 13 is a bottom perspective view illustrating the OIS-x carrier and related components mating with the fixture of FIG. 12. FIG. [Figure 14] 13 is a perspective view illustrating a state in which an OIS-x carrier is disposed in the lens driving device in the state of FIG. 12. FIG. [Figure 15a] 15 is a bottom perspective view illustrating an OIS-y carrier and related configuration mating with the OIS-x carrier of FIG. 14. FIG. [Figure 15b] FIG. 2 is an exploded perspective view of an OIS-x carrier and an OIS-y carrier of the lens driving device according to the first embodiment of the present invention. [Figure 15c] FIG. 2 is an exploded perspective view of the bottom of an OIS-x carrier and an OIS-y carrier of the lens driving device according to the first embodiment of the present invention. [Figure 16] FIG. 15 is a perspective view illustrating a state in which an OIS-y carrier is disposed in the lens driving device in the state of FIG. 14. [Figure 17] FIG. 2 is a perspective view illustrating an OIS-x carrier and an OIS-y carrier and related configurations of the lens driving device according to the first embodiment of the present invention. [Figure 18]1 is a perspective view illustrating an AF carrier and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 19] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention with a cover and a housing removed. [Figure 20] 20 is a front view of the lens driving device in the state shown in FIG. 19 with the AF board removed. [Figure 21] 20 is a side view of the lens driving device in the state of FIG. 19, seen from another direction. [Figure 22] 22 is a side view of the lens driving device in the state of FIG. 21, seen from the opposite direction to that of FIG. 20. [Figure 23] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention with a cover and a moving unit removed therefrom. [Figure 24] 1 is a perspective view illustrating a driving unit and related configuration of a lens driving device according to a first embodiment of the present invention. [Figure 25a] 25 is a perspective view of the lens driving device in the state of FIG. 24, seen from another direction. FIG. [Figure 25b] 10 is a perspective view illustrating the shape of an AF magnet and related configurations according to a modified example. FIG. [Figure 26] FIG. 2 is a cross-sectional view illustrating the state of a moving part in an initial state in which no current is applied to an AF coil, illustrating the autofocus driving of the lens driving device according to the first embodiment of the present invention. [Figure 27] FIG. 1 is a diagram for explaining 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 in which a forward current is applied to the AF coil and the moving part moves upward in the optical axis direction. [Figure 28] FIG. 1 is a diagram for explaining 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 in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction. [Figure 29]FIG. 1 is a diagram for explaining image stabilization 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 a moving part in an initial state in which no current is applied to the OIS-x coil and the OIS-y coil. [Figure 30] FIG. 10 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil, causing the OIS-x carrier and the OIS-y carrier to move in the x-axis direction perpendicular to the optical axis, for explaining the image stabilization drive of the lens driving device according to the first embodiment of the present invention. [Figure 31] FIG. 1 is a diagram for explaining image stabilization 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 a moving part in an initial state in which no current is applied to the OIS-x coil and the OIS-y coil. [Figure 32] FIG. 10 is a cross-sectional view illustrating the image stabilization drive of the lens driving device according to the first embodiment of the present invention, showing the state in which a current is applied to the OIS-y coil and the OIS-y carrier moves in the y-axis direction perpendicular to both the optical axis and the x-axis. [Figure 33] 1 is an exploded perspective view of a camera device according to a first embodiment of the present invention. [Figure 34] 1 is a perspective view of an optical apparatus according to a first embodiment of the present invention. [Figure 35] FIG. 10 is a perspective view of an optical device according to a modified example. [Figure 36] FIG. 10 is a perspective view of a lens driving device according to a second embodiment of the present invention. [Figure 37] 37 is a cross-sectional view taken along line aa in FIG. 36. [Figure 38] FIG. 37 is a cross-sectional view taken along the line bb in FIG. 36. [Figure 39] FIG. 37 is a cross-sectional view taken along the line cc in FIG. 36. [Figure 40] FIG. 37 is a cross-sectional view taken along the line dd in FIG. 36. [Figure 41] 37 is a cross-sectional view taken along the line ee in FIG. 36. [Figure 42] FIG. 10 is a cross-sectional perspective view illustrating a cross section of a lens driving device according to a second embodiment of the present invention taken along a direction perpendicular to the optical axis. [Figure 43a]FIG. 10 is an exploded perspective view of a lens driving device according to a second embodiment of the present invention. [Figure 43b] FIG. 10 is an exploded perspective view of a lens driving device according to a first modified example. [Figure 43c] FIG. 10 is an exploded perspective view of a lens driving device according to a second modified example. [Figure 43d] FIG. 11 is an exploded perspective view of a lens driving device according to a third modified example. [Figure 44] FIG. 43B 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. 43A. [Figure 45] FIG. 10 is a perspective view of a lens driving device according to a second embodiment of the present invention with the cover removed. [Figure 46] 46 is a perspective view showing a state in which the cover has been removed from the lens drive device according to the second embodiment of the present invention, as seen from a direction different from that of FIG. 45. FIG. [Figure 47] 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 48] FIG. 10 is a perspective view illustrating an OIS-x moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 49] FIG. 10 is a bottom perspective view illustrating an OIS-x moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 50] FIG. 10 is a perspective view illustrating an OIS-y moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 51] FIG. 10 is a bottom perspective view illustrating an OIS-y moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 52] FIG. 10 is a perspective view illustrating an AF moving unit and related configuration of a lens driving device according to a second embodiment of the present invention. [Figure 53] FIG. 10 is a bottom view of a lens driving device according to a second embodiment of the present invention with a base and a cover removed. [Figure 54] FIG. 10 is a perspective view showing a driving section, a guide member, and related configurations of a lens driving device according to a second embodiment of the present invention, together with a base. [Figure 55]FIG. 10 is a partially perspective plan view illustrating the arrangement of an AF magnet and an AF attractive force yoke in a lens driving device according to a second embodiment of the present invention. [Figure 56] FIG. 10 is a front view illustrating the arrangement of an AF magnet and an AF attractive force yoke in a lens driving device according to a second embodiment of the present invention. [Figure 57] FIG. 10 is a cross-sectional view illustrating the state of the AF moving part in the initial state in which no current is applied to the AF coil, illustrating the autofocus driving of the lens driving device according to the second embodiment of the present invention. [Figure 58] FIG. 10 is a cross-sectional view illustrating the autofocus drive of the lens driving device according to the second embodiment of the present invention, showing the state in which a forward current is applied to the AF coil and the AF moving part moves upward in the optical axis direction. [Figure 59] FIG. 10 is a cross-sectional view illustrating the autofocus drive of the lens driving device according to the second embodiment of the present invention, showing the state in which a reverse current is applied to the AF coil and the AF moving part moves downward in the optical axis direction. [Figure 60] FIG. 10 is a cross-sectional view illustrating the state of the moving part in the initial state in which 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 61] FIG. 10 is a cross-sectional view illustrating the image stabilization drive of a lens driving device according to a second embodiment of the present invention, showing the state in which a current is applied to the OIS-x coil, causing the OIS-x moving unit, OIS-y moving unit, and AF moving unit to move in the x-axis direction perpendicular to the optical axis. [Figure 62] FIG. 10 is a cross-sectional view illustrating the image stabilization drive of the lens driving device according to the second embodiment of the present invention, showing the state in which a current is applied to the OIS-y coil, causing the OIS-y moving unit and the AF moving unit to move in the y-axis direction perpendicular to the optical axis. [Figure 63] FIG. 10 is an exploded perspective view of a camera device according to a second embodiment of the present invention. [Figure 64] FIG. 10 is a perspective view of an optical apparatus according to a second embodiment of the present invention. [Figure 65]FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0058] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0059] However, the technical concept of the present invention is not limited to the described embodiments, but 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.

[0060] Furthermore, unless otherwise clearly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention may 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 terms defined in a dictionary, may be interpreted in light of the contextual meaning of the relevant art.

[0061] Furthermore, the terms used in the examples of the present invention are intended to explain the examples and are not intended to limit the present invention.

[0062] In this specification, the singular can include the plural unless otherwise specified in the context, and when it is stated as "A and at least one (or more) of B and C," it can include one or more of all possible combinations of A, B, and C.

[0063] 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 component from other components, and the terms do not limit the essence, order, or sequence of the components.

[0064] It should be noted that when a component is described as being "coupled," "coupled," or "connected" to another component, it does not only include cases where the component is directly "coupled," "coupled," or "connected" to the other component, but also cases where the component is "coupled," "coupled," or "connected" by yet another component that is between the component and the other component.

[0065] Furthermore, when it is stated that something is formed or disposed "above" or "below" a component, "above" or "below" refers not only to the case where the two components are in direct contact with each other, but also to the case where one or more other components are formed or disposed between the two components. Furthermore, when it is expressed as "above" or "below," it can mean not only the upward direction but also the downward direction based on one component.

[0066] The "optical axis (see OA in FIG. 26) direction" used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0067] 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."

[0068] The term "autofocus (AF) function" used below is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens along the optical axis according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. Also, the term "autofocus feedback (CLAF, closed-loop autofocus) control" is defined as sensing the distance between the image sensor and the lens and providing feedback (feedback) to control the position of the lens in real time to improve the accuracy of focus adjustment.

[0069] 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 hand tremors in order to prevent blurring of images or videos caused by the user's hand tremors. Also, "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 image stabilization.

[0070] Hereinafter, either the "OIS carrier 200" or the "AF carrier 300" may be referred to as the "first carrier," and the other may be referred to as the "second carrier."

[0071] Hereinafter, any one of the "OIS-x carrier 210," "OIS-y carrier 220," and "AF carrier 300" may be referred to as the "first carrier," the other may be referred to as the "second carrier," and the other may be referred to as the "third carrier."

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

[0073] Hereinafter, one of the "OIS substrate 130" and the "AF substrate 140" may be referred to as the "first substrate," and the other may be referred to as the "second substrate."

[0074] Hereinafter, one of the "OIS driving unit" and the "AF driving unit" may be referred to as the "first driving unit," and the other may be referred to as the "second driving unit."

[0075] Hereinafter, any one of the "OIS-x coil 410," "OIS-y coil 510," and "AF coil 610" may be referred to as the "first coil," the other may be referred to as the "second coil," and the other may be referred to as the "third coil."

[0076] Hereinafter, any one of the "OIS-x magnet 420," "OIS-y magnet 520," and "AF magnet 620" may be referred to as the "first magnet," the other may be referred to as the "second magnet," and the other may be referred to as the "third magnet."

[0077] Hereinafter, any one of the "OIS-x sensor 430," "OIS-y sensor 530," and "AF sensor 630" may be referred to as the "first sensor," the other may be referred to as the "second sensor," and the other may be referred to as the "third sensor."

[0078] Hereinafter, any one of the "OIS-x yoke 440," "OIS-y yoke 540," and "AF yoke 640" may be referred to as the "first yoke," the other may be referred to as the "second yoke," and the other may be referred to as the "third yoke."

[0079] Hereinafter, any one of the "OIS-x guide ball 710," "OIS-y guide ball 720," and "AF guide ball 730" may be referred to as the "first ball," another may be referred to as the "second ball," and another may be referred to as the "third ball."

[0080] Hereinafter, one of the “AF moving unit 1200,” “OIS-x moving unit 1300,” and “OIS-y moving unit 1400” may be referred to as the “first moving unit,” another as the “second moving unit,” and another as the “third moving unit.” Furthermore, “moving unit” may also be referred to as a “moving body” or a “moving person.”

[0081] Hereinafter, one of the “AF carrier 1210,” “OIS-x carrier 1310,” and “OIS-y carrier 1410” may be referred to as the “first carrier,” another as the “second carrier,” and another as the “third carrier.” Furthermore, the term “carrier” may be referred to as a “holder,” a “frame,” or a “spacer.”

[0082] Hereinafter, one of the "AF driving unit 1500," "OIS-x driving unit 1600," and "OIS-y driving unit 1700" may be referred to as the "first driving unit," another may be referred to as the "second driving unit," and another may be referred to as the "third driving unit."

[0083] Hereinafter, one of the “AF magnet 1510,” “OIS-x magnet 1610,” “OIS-y magnet 1710,” and “attractive magnet 1955” may be referred to as the “first magnet,” another as the “second magnet,” another as the “third magnet,” and the remaining one as the “fourth magnet.” Meanwhile, “magnet” may refer to a “magnet” or a “permanent magnet.”

[0084] Hereinafter, one of the "AF coil 1520," "OIS-x coil 1620," and "OIS-y coil 1720" may be referred to as the "first coil," another may be referred to as the "second coil," and another may be referred to as the "third coil."

[0085] Hereinafter, one of the "AF sensor 1530," "OIS-x sensor 1630," and "OIS-y sensor 1730" may be referred to as the "first sensor," another as the "second sensor," and yet another as the "third sensor."

[0086] Hereinafter, one of the "AF guide ball 1810," "OIS-x guide ball 1820," and "OIS-y guide ball 1830" may be referred to as the "first ball," another as the "second ball," and another as the "third ball." On the other hand, "ball" may be referred to as a "guide ball." For example, the "first ball" may be referred to as the "first guide ball."

[0087] Hereinafter, one of the "AF gravitational force yoke 1910," "OIS-x gravitational force yoke 1920," "OIS-y gravitational force yoke 1930," "first additional pressurizing gravitational force yoke 1940," and "second additional pressurizing gravitational force yoke 1950" may be referred to as the "first yoke," another as the "second yoke," another as the "third yoke," another as the "fourth yoke," and another as the "fifth yoke."

[0088] Hereinafter, one or more of “Groove 1111,” “Groove 1211,” “Groove 1311,” “Groove 1312,” “Groove 1411,” and “Groove 1412” may be referred to as the “first groove,” one or more of the others may be referred to as the “second groove,” one or more of the others may be referred to as the “third groove,” one or more of the others may be referred to as the “fourth groove,” one or more of the others may be referred to as the “fifth groove,” and one or more of the others may be referred to as the “sixth groove.” Alternatively, “Groove 1211” and “Groove 1211” in which the AF guide ball 1810 is disposed may be commonly referred to as the “first groove,” “Groove 1311” and “Groove” in which the OIS-y guide ball 1830 is disposed may be commonly referred to as the “second groove,” and “Groove 1111” and “Groove 1312” in which the OIS-x guide ball 1820 is disposed may be commonly referred to as the “third groove.”

[0089] Hereinafter, one of the "side substrate 1130" and the "lower substrate 1140" may be referred to as the "first substrate," and the other may be referred to as the "second substrate."

[0090] Hereinafter, one of the "x-axis direction" and the "y-axis direction" may be referred to as the "first direction," and the other may be referred to as the "second direction."

[0091] 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.

[0092] FIG. 1 is a perspective view of a lens driving device according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 1, FIG. 4 is a cross-sectional view taken along line CC in FIG. 1, FIG. 5 is a cross-sectional view taken along line DD in FIG. 1, FIG. 6 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, FIGS. 7 to 9 are exploded perspective views of the lens driving device according to the first embodiment of the present invention seen from different directions, and FIG. 10 is a perspective view of the lens driving device according to the first embodiment of the present invention with the cover omitted, 11 is an exploded perspective view illustrating the coupling structure of the base, OIS substrate, and related components of the lens driving device according to the first embodiment of the present invention; FIG. 12 is a perspective view illustrating a part of the fixing part of the lens driving device according to the first embodiment of the present invention and related components; FIG. 13 is a bottom perspective view illustrating the OIS-x carrier and related components coupled with the fixing part of FIG. 12; FIG. 14 is a perspective view illustrating the state in which the OIS-x carrier is disposed in the lens driving device in the state of FIG. 12; and FIG. 15a is a bottom perspective view illustrating the OIS-y carrier and related components coupled with the OIS-x carrier of FIG. 14. 15b is an exploded perspective view of the OIS-x carrier and the OIS-y carrier of the lens driving device according to the first embodiment of the present invention; FIG. 15c is an exploded perspective view of the bottom of the OIS-x carrier and the OIS-y carrier of the lens driving device according to the first embodiment of the present invention; FIG. 16 is a perspective view illustrating the state in which the OIS-y carrier is arranged in the lens driving device in the state of FIG. 14; FIG. 17 is a perspective view illustrating the OIS-x carrier and the OIS-y carrier of the lens driving device according to the first embodiment of the present invention and related configurations; 20 is a front view of the lens driving device in the state of FIG. 19 with the AF board removed; FIG. 21 is a side view of the lens driving device in the state of FIG. 19 as seen from another direction; FIG. 22 is a side view of the lens driving device in the state of FIG. 21 as seen from the opposite direction to FIG. 20; FIG. 23 is a perspective view of the lens driving device in the state of FIG. 19 with the cover and moving part removed; and FIG. 24 is a perspective view of the lens driving device in the state of FIG. 19 with the cover and moving part removed;25A is a perspective view illustrating the driving unit and related configuration of the lens driving device according to the first embodiment of the present invention, and FIG. 25B is a perspective view illustrating the shape of the AF magnet and related configuration according to a modified example.

[0093] 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 IS module.

[0094] 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.

[0095] The lens driving device 10 may include a base 110. The fixed part 100 may include a base 110. The base 110 may be disposed below the OIS carrier. The base 110 may be disposed below the AF carrier 300. The base 110 may be coupled to a cover 150. The AF carrier 300 and the OIS carrier 200 may be disposed on the base 110. The AF carrier 300 and the OIS carrier 200 may be disposed on a bottom plate of the base 110. The AF carrier 300 and the OIS carrier 200 may be disposed within the base 110. The AF carrier 300 and the OIS carrier 200 may be disposed within a side plate of the base 110. The description of the OIS carrier 200 may also apply to each of the OIS-x carrier 210 and the OIS-y carrier 220.

[0096] The base 110 may include a groove 111. The groove 111 may be a "yoke receiving groove." The groove 111 may be formed in a concave shape on the upper surface of the base 110. The groove 111 can receive the yoke 440, 540. The yoke 440, 540 may be disposed in the groove 111. The groove 111 may be formed in a shape corresponding to the yoke 440, 540. The groove 111 may include a plurality of grooves. The groove 111 may include four grooves. The groove 111 may include first to fourth grooves. The base 110 may include a groove 112.

[0097] The base 110 may include a groove 112. The groove 112 may be a "terminal accommodating groove." The groove 112 may be formed in a concave shape on the outer surface of the base 110. A terminal portion 131 of the OIS substrate 130 may be disposed in the groove 111. At least a portion of the AF substrate 140 may be disposed in the groove 111. A terminal portion of the AF substrate 140 may be disposed in the groove 111.

[0098] Either the groove 111 or the groove 112 of the base 110 can be referred to as a "first groove," and the other can be referred to as a "second groove."

[0099] The lens driving device 10 may include a housing 120. The fixed unit 100 may include the housing 120. The housing 120 may be disposed on the base 110. The housing 120 may be disposed on the base 110. The housing 120 may be disposed on the outside of the OIS carrier 200. The housing 120 may be disposed on the outside of the OIS-x carrier 210. The housing 120 may be disposed on the outside of the OIS-y carrier 220. The housing 120 may be disposed on the outside of the AF carrier 300. The housing 120 may be disposed between the cover 150 and the OIS carrier 200. The housing 120 may be disposed between the cover 150 and the AF carrier 300. The housing 120 may be disposed between the cover 150 and the base 110. The housing 120 may be disposed on the OIS substrate 130. The housing 120 may be disposed on the OIS substrate 130. The housing 120 does not have to move.

[0100] Alternatively, the housing 120 and the base 110 may be integrally formed, i.e., only the integral base 110 may be provided and the housing 120 may be omitted, or only the integral housing 120 may be provided and the base 110 may be omitted.

[0101] Alternatively, only the base 110 may be omitted. In this case, the OIS substrate 130 may be disposed between the sensor base 40 and the housing 120.

[0102] The housing 120 may include a stepped portion 121. The stepped portion 121 may be formed on an outer circumferential surface of the housing 120. The stepped portion 121 may be formed to protrude from a lower end of the outer circumferential surface of the housing 120. A side plate 152 of the cover 150 may be disposed on the stepped portion 121. The stepped portion 121 may overlap with the side plate 152 of the cover 150 in the optical axis direction.

[0103] The housing 120 may include a lower plate 122. The lower plate 122 may be disposed on the base 110. The lower plate 122 may be disposed below the OIS carrier 200. The lower plate 122 may be disposed below the AF carrier 300. The lower plate 122 may be disposed between the base 110 and the OIS carrier 200. The lower plate 122 may support the OIS carrier 200. The lower plate 122 may support the AF carrier 300.

[0104] Housing 120 may include groove 123. Groove 123 may be an "OIS-x guide ball receiving groove." Groove 123 may be formed in the upper surface of lower plate 122 of housing 120. Groove 123 may be formed in a concave shape in the upper surface of lower plate 122 of housing 120. Groove 123 can receive at least a portion of OIS-x guide ball 710. OIS-x guide ball 710 may be disposed in groove 123. Groove 123 may be formed as a V-groove having a V-shaped cross section. Groove 123 can contact OIS-x guide ball 710 at two points. Groove 123 may include a plurality of grooves. Groove 123 may include four grooves. Groove 123 may include first to fourth grooves.

[0105] The lens driving device 10 may include a substrate. The substrate may include an OIS substrate 130. The substrate may include an AF substrate 140. The OIS substrate 130 and the AF substrate 140 may be formed separately. Alternatively, the OIS substrate 130 and the AF substrate 140 may be formed integrally.

[0106] The lens driving device 10 may include an OIS substrate 130. The fixed unit 100 may include the OIS substrate 130. The OIS substrate 130 may be a flexible printed circuit board (FPCB). The OIS substrate 130 may be disposed on the base 110. An OIS-x coil 410 may be disposed on the OIS substrate 130. An OIS-y coil 510 may be disposed on the OIS substrate 130. An OIS-x sensor 430 may be disposed on the OIS substrate 130. An OIS-y sensor 530 may be disposed on the OIS substrate 130. An OIS-x yoke 440 may be disposed on the OIS substrate 130. An OIS-y yoke 540 may be disposed on the OIS substrate 130. The OIS-x coil 410, the OIS-y coil 510, the OIS-x sensor 430, and the OIS-y sensor 530 may be disposed on the upper surface of the OIS substrate 130. An OIS-x yoke 440 and an OIS-y yoke 540 may be disposed on the lower surface of OIS substrate 130. OIS substrate 130 may be electrically connected to OIS-x coil 410, OIS-y coil 510, OIS-x sensor 430, and OIS-y sensor 530.

[0107] The OIS substrate 130 may include a main body portion. The main body portion may be disposed on the upper surface of the base 110. The OIS-x coil 410, the OIS-y coil 510, the OIS-x sensor 430, the OIS-y sensor 530, the OIS-x yoke 440, and the OIS-y yoke 540 may be disposed in the main body portion. The main body portion may include a bore hole.

[0108] The OIS substrate 130 may include a terminal portion 131. The terminal portion 131 may extend from the main body portion. The terminal portion 131 may extend from the outer edge of the main body portion. The terminal portion 131 may extend downward from the outer edge of the main body portion. The terminal portion 131 may be bent from the main body portion. The terminal portion 131 may be disposed on a side surface of the base 110. A terminal may be disposed in the terminal portion 131. A plurality of terminals may be disposed on an outer surface of the terminal portion 131. The terminal of the OIS substrate 130 may be electrically connected to the OIS-x coil 410, the OIS-y coil 510, the OIS-x sensor 430, and the OIS-y sensor 530.

[0109] The lens driving device 10 may include an AF board 140. The fixed unit 100 may include the AF board 140. The AF board 140 may be a flexible printed circuit board (FPCB). The AF board 140 may be disposed in the housing 120. An AF coil 610 may be disposed on the AF board 140. An AF sensor 630 may be disposed on the AF board 140. An AF yoke 640 may be disposed on the AF board 140. The AF coil 610 and the AF sensor 630 may be disposed on an inner surface of the AF board 140. The AF yoke 640 may be disposed on an outer surface of the AF board 140. The AF board 141 may be electrically connected to the AF coil 610 and the AF sensor 630.

[0110] The AF substrate 140 may include a terminal 141. The terminal 141 of the AF substrate 141 may be electrically connected to the AF coil 610 and the AF sensor 630. The terminal 141 may be formed at a lower end of the outer surface of the AF substrate 140. The terminal 141 may include a plurality of terminals.

[0111] The lens driving device 10 may include a cover 150. The fixed part 100 may include the cover 150. The cover 150 may be disposed on the base 110. The cover 150 may be coupled to the base 110. The cover 150 may be fixed to the base 110. The cover 150 may be disposed on the housing 120. The cover 150 may be coupled to the housing 120. The cover 150 may be fixed to the housing 120. The cover 150 may house the AF carrier 300 therein. The cover 150 may house the OIS carrier 200 therein. The cover 150 may be a shield. The cover 150 may be a shield can.

[0112] The cover 150 may include an upper plate 151. The upper plate 151 may be disposed on the moving part. The upward movement of the moving part may be limited by the moving part contacting the upper plate 151. The upper plate 151 may include a hole through which light passes.

[0113] The cover 150 may include side plates 152. The side plates 152 may extend from the upper plate 151. The side plates 152 may be disposed on the housing 120. The side plates 152 may be disposed on a stepped portion 121 formed to protrude from a lower end of the outer surface of the housing 120. The side plates 152 may include a plurality of side plates. The side plates 152 may include four side plates. The side plates 152 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.

[0114] The lens driving device 10 may include a moving unit. The moving unit may be disposed on the fixed unit 100. The moving unit may be disposed within the fixed unit 100. The moving unit may be disposed on the fixed unit 100. The moving unit may be movably disposed on the fixed unit 100. The moving unit can be moved with respect to the fixed unit 100 by the driving unit. The moving unit can move during AF driving. The moving unit can move during OIS driving. A lens can be coupled to the moving unit.

[0115] The movement unit may include an OIS movement unit, an OIS-x movement unit, an OIS-y movement unit, or an AF movement unit.

[0116] The lens driving device 10 may include an OIS moving unit. The OIS moving unit may be disposed on the fixed unit 100. The OIS moving unit may be disposed within the fixed unit 100. The OIS moving unit may be disposed on the fixed unit 100. The OIS moving unit may be disposed between the fixed unit 100 and the AF moving unit. The OIS moving unit may be disposed movably. The OIS moving unit can be moved in a direction perpendicular to the optical axis by the OIS driving unit. The OIS moving unit can move when driving the image stabilization (OIS).

[0117] The lens driving device 10 may include an OIS carrier 200. The OIS carrier 200 may be an "OIS holder." The OIS carrier 200 may be disposed on the fixed unit 100. The OIS carrier 200 may be disposed within the fixed unit 100. The OIS carrier 200 may be disposed on the fixed unit 100. The OIS carrier 200 may be disposed between the fixed unit 100 and the AF moving unit. The OIS carrier 200 may be disposed movably. The OIS carrier 200 can be moved in a direction perpendicular to the optical axis by the OIS driving unit. The OIS carrier 200 can move when driving the image stabilization (OIS).

[0118] The lens driving device 10 may include an OIS-x moving unit. The OIS moving unit may include an OIS-x moving unit. The OIS-x moving unit may be arranged on the fixed unit 100. The OIS-x moving unit may be arranged within the fixed unit 100. The OIS-x moving unit may be arranged on the fixed unit 100. The OIS-x moving unit may be arranged between the fixed unit 100 and the OIS-y moving unit. The OIS-x moving unit may be arranged between the fixed unit 100 and the AF moving unit. The OIS-x moving unit may be arranged to be movably arranged. The OIS-x moving unit can be moved in the x-axis direction perpendicular to the optical axis by the OIS-x driving unit.

[0119] The lens driving device 10 may include an OIS-x carrier 210. The moving unit may include an OIS-x carrier 210. The OIS-x moving unit may include an OIS-x carrier 210. The OIS carrier 200 may include an OIS-x carrier 210. The OIS-x carrier 210 may be an "OIS-x holder." The OIS-x carrier 210 may be disposed on the fixed unit 100. The OIS-x carrier 210 may be disposed on the housing 120. The OIS-x carrier 210 may be disposed within the fixed unit 100. The OIS-x carrier 210 may be disposed within the housing 120. The OIS-x carrier 210 may be disposed on the fixed unit 100. The OIS-x carrier 210 may be disposed on the base 110. The OIS-x carrier 210 may be disposed on the housing 120. The OIS-x carrier 210 may be disposed between the fixed unit 100 and the OIS-y carrier 220. OIS-x carrier 210 may be arranged between fixed unit 100 and AF carrier 300. OIS-x carrier 210 may be arranged to be movably arranged. OIS-x carrier 210 can be moved in the x-axis direction perpendicular to the optical axis by an OIS-x drive unit.

[0120] The OIS-x carrier 210 may be movable on both sides in the x-axis direction until it contacts the housing 120. The point where the OIS-x carrier 210 and the housing 120 contact may be the maximum range of movement. The OIS-x carrier 210 may move within the maximum range of movement. That is, the movement distance of the OIS-x carrier 210 in the x-axis direction may be limited by contact with the housing 120. In other words, the OIS-x carrier 210 may contact the housing 120 without contacting the OIS-y carrier 220 or the like during movement in the x-axis direction. The OIS-x carrier 210 may include a stopper that contacts the housing 120. The housing 120 may include a stopper that contacts the stopper of the OIS-x carrier 210.

[0121] OIS-x carrier 210 may include groove 211. Groove 211 may be an "OIS-x guide ball accommodating groove." Groove 211 may be formed on the lower surface of OIS-x carrier 210. Groove 211 may be formed in a concave shape on the lower surface of OIS-x carrier 210. Groove 211 can accommodate at least a portion of OIS-x guide ball 710. OIS-x guide ball 710 may be arranged in groove 211. Groove 211 may be formed as a V-groove having a V-shaped cross section. Groove 211 can contact OIS-x guide ball 710 at two points. Groove 211 may include a plurality of grooves. Groove 211 may include four grooves. Groove 211 may include first to fourth grooves.

[0122] Groove 211 of OIS-x carrier 210 may be formed at a position corresponding to groove 123 of housing 120. Groove 211 of OIS-x carrier 210 may be formed at a position corresponding to groove 123 of housing 120 in the optical axis direction. Groove 211 of OIS-x carrier 210 may overlap groove 123 of housing 120 in the optical axis direction. Groove 211 of OIS-x carrier 210 may be arranged to face groove 123 of housing 120.

[0123] The OIS-x carrier 210 may include a groove 212. The groove 212 may be an OIS-y guide ball accommodating groove. The groove 212 may be formed in the upper surface of the OIS-x carrier 210. The groove 212 may be formed concavely in the upper surface of the OIS-x carrier 210. The groove 212 can accommodate at least a portion of the OIS-y guide ball 720. The OIS-y guide ball 720 may be disposed in the groove 212. The groove 212 may be formed as a V-groove having a V-shaped cross section. The groove 212 can contact the OIS-y guide ball 720 at two points. The groove 212 may include a plurality of grooves. The groove 212 may include four grooves. The groove 212 may include first to fourth grooves.

[0124] The OIS-x carrier 210 may include a groove 213. The groove 213 may be an "OIS-y carrier protrusion avoidance groove." The groove 213 may be formed in a corner area of the OIS-x carrier 210. The groove 213 may be formed in two of the four corner areas of the OIS-x carrier 210. The two corner areas may be arranged at a large angle from each other. A protrusion 223 of the OIS-y carrier 220 may be arranged in the groove 213. The groove 213 may be formed so that the OIS-x carrier 210 and the protrusion 223 of the OIS-y carrier 220 do not interfere with each other. The protrusion 223 of the OIS-y carrier 220 may be inserted into the groove 213. The groove 213 may be larger than the size of the protrusion 223. Even when the OIS-y carrier 220 moves, the protrusion 223 does not have to come into contact with the groove 213.

[0125] Any one of grooves 211, 212 and 213 of OIS-x carrier 210 can be referred to as a "first groove", another as a "second groove", and still another as a "third groove".

[0126] The lens driving device 10 may include an OIS-y moving unit. The OIS moving unit may include an OIS-y moving unit. The OIS-y moving unit may be arranged on the fixed unit 100. The OIS-y moving unit may be arranged within the fixed unit 100. The OIS-y moving unit may be arranged on the fixed unit 100. The OIS-y moving unit may be arranged between the OIS-x moving unit and the AF moving unit. The OIS-y moving unit may be arranged between the fixed unit 100 and the AF moving unit. The OIS-y moving unit may be arranged to be movably moved. The OIS-y moving unit can be moved in the y-axis direction perpendicular to the optical axis by the OIS-x driving unit.

[0127] The lens driving device 10 may include an OIS-y carrier 220. The moving unit may include the OIS-y carrier 220. The OIS-y moving unit may include the OIS-y carrier 220. The OIS carrier 200 may include the OIS-y carrier 220. The OIS-y carrier 220 may be an "OIS-y holder." The OIS-y carrier 220 may be disposed on the fixed unit 100. The OIS-y carrier 220 may be disposed within the fixed unit 100. The OIS-y carrier 220 may be disposed within the housing 120. The OIS-y carrier 220 may be disposed on the fixed unit 100. The OIS-y carrier 220 may be disposed on the base 110. The OIS-y carrier 220 may be disposed on the OIS-x carrier 210. The OIS-y carrier 220 may be disposed on the OIS-x carrier 210. The OIS-y carrier 220 may be disposed between the fixed unit 100 and the AF carrier 300. The OIS-y carrier 220 may be disposed between the OIS-x carrier 210 and the AF carrier 300. The OIS-y carrier 220 may be disposed movably. The OIS-y carrier 220 can be moved in the y-axis direction perpendicular to the optical axis by an OIS-y drive unit.

[0128] The OIS-y carrier 220 may include a groove 221. The groove 221 may be an "AF guide ball accommodating groove." The groove 221 may be formed on the inner surface of the OIS-y carrier 220. The groove 221 may be formed concavely on the inner surface of the OIS-y carrier 220. The groove 221 can accommodate at least a portion of the AF guide ball 730. The AF guide ball 730 may be disposed in the groove 221. The groove 221 may be formed as a V-groove having a V-shaped cross section. The groove 221 can contact the AF guide ball 730 at two points. The groove 221 may include multiple grooves. The groove 221 may include two grooves. The groove 221 may include first and second grooves. Three balls may be disposed in each of the two grooves.

[0129] The OIS-y carrier 220 may include a groove 222. The groove 222 may be an "OIS-y guide ball accommodating groove." The groove 222 may be formed in the lower surface of the OIS-y carrier 220. The groove 222 may be formed in a concave shape in the lower surface of the OIS-y carrier 220. The groove 222 can accommodate at least a portion of the OIS-y guide ball 720. The OIS-y guide ball 720 may be disposed in the groove 222. The groove 222 may be formed as a V-groove having a V-shaped cross section. The groove 222 can contact the OIS-y guide ball 720 at two points. The groove 222 may include multiple grooves. The groove 222 may include four grooves. The groove 222 may include first to fourth grooves.

[0130] The grooves 222 of the OIS-y carrier 220 may be formed at positions corresponding to the grooves 212 of the OIS-x carrier 210. The grooves 222 of the OIS-y carrier 220 may be formed at positions corresponding to the grooves 212 of the OIS-x carrier 210 in the optical axis direction. The grooves 222 of the OIS-y carrier 220 may overlap with the grooves 212 of the OIS-x carrier 210 in the optical axis direction. The grooves 222 of the OIS-y carrier 220 may be arranged to face the grooves 212 of the OIS-x carrier 210.

[0131] The OIS-y carrier 220 may include a protrusion 223. The protrusion 223 may be a "magnet placement portion." The protrusion 223 may be a "protrusion." The OIS-y magnet 520 may be placed in the protrusion 223. The protrusion 223 may include a groove in which the OIS-y magnet 520 is placed. The protrusion 223 may overlap the OIS-x carrier 210 in a direction perpendicular to the optical axis. The protrusion 223 may protrude toward the OIS-y coil 510. The protrusion 223 may protrude downward.

[0132] The OIS-y carrier 220 may include a protrusion 224. The protrusion 224 may be shaped to fit into a groove in the OIS-x carrier 210. However, the protrusion 224 does not have to contact the OIS-x carrier 210.

[0133] Either groove 221 or groove 222 of OIS-y carrier 220 can be referred to as the “first groove,” and the other can be referred to as the “second groove.” Either protrusion 223 or protrusion 224 of OIS-y carrier 220 can be referred to as the “first protrusion,” and the other can be referred to as the “second protrusion.”

[0134] The lens driving device 10 may include an AF moving unit. The moving unit may include an AF moving unit. The AF moving unit may be arranged on the fixed unit 100. The AF moving unit may be arranged within the fixed unit 100. The AF moving unit may be arranged on the fixed unit 100. The AF moving unit may be arranged on the OIS moving unit. The AF moving unit may be arranged within the OIS moving unit. The AF moving unit may be arranged on the OIS moving unit. The AF moving unit may be movably arranged on the fixed unit 100. The AF moving unit may be movably arranged on the OIS moving unit. The AF moving unit can be moved in the optical axis direction relative to the fixed unit 100 and the OIS moving unit by the AF driving unit. The AF moving unit can move during autofocus (AF) driving.

[0135] The lens driving device 10 may include an AF carrier 300. The moving unit may include the AF carrier 300. The AF carrier 300 may be an "AF holder." The AF carrier 300 may be a "bobbin." The AF carrier 300 may be disposed within the housing 120. The AF carrier 300 may be disposed on the base 110. The AF carrier 300 may be disposed within the cover 150. The AF carrier 300 may be disposed on the OIS carrier 200. The AF carrier 300 may be disposed within the OIS carrier 200. The AF carrier 300 may be disposed on the OIS-x carrier 210. The AF carrier 300 may be disposed on the OIS-y carrier 220. The AF carrier 300 may be disposed on the OIS-y carrier 220. The AF carrier 300 may be disposed to be movable in the optical axis direction.

[0136] The AF carrier 300 can move together with the OIS carrier 200. The AF carrier 300 can move together with the OIS-x carrier 210. The AF carrier 300 can move together with the OIS-y carrier 220. When the OIS carrier 200 is moved by the OIS driver, the AF carrier 300 can also move together with the OIS carrier 200.

[0137] The AF carrier 300 may include a groove 310. The groove 310 may be an "AF guide ball receiving groove." The groove 310 may be formed on the outer surface of the AF carrier 300. The groove 310 may be formed concavely on the outer surface of the AF carrier 300. The groove 310 can receive at least a portion of the AF guide ball 730. The AF guide ball 730 may be disposed in the groove 310. The groove 310 may be formed as a V-groove having a V-shaped cross section. The groove 310 can contact the AF guide ball 730 at two points. The groove 310 may include multiple grooves. The groove 310 may include two grooves. The groove 310 may include first and second grooves. Three balls may be disposed in each of the two grooves.

[0138] The grooves 310 of the AF carrier 300 may be formed at positions corresponding to the grooves 221 of the OIS-y carrier 220. The grooves 310 of the AF carrier 300 may be formed at positions corresponding to the grooves 221 of the OIS-y carrier 220 in a direction perpendicular to the optical axis. The grooves 310 of the AF carrier 300 may overlap with the grooves 221 of the OIS-y carrier 220 in a direction perpendicular to the optical axis. The grooves 310 of the AF carrier 300 may overlap with the grooves 221 of the OIS-y carrier 220 in the y-axis direction perpendicular to the optical axis. The grooves 310 of the AF carrier 300 may be disposed to face the grooves 221 of the OIS-y carrier 220.

[0139] The AF carrier 300 may include an upper plate 320. The upper plate 320 of the AF carrier 300 may be disposed on the OIS-y carrier 220. The upper plate 320 of the AF carrier 300 may overlap the OIS-y carrier 220 in the optical axis direction. The upper plate 320 of the AF carrier 300 may be disposed between the OIS-y carrier 220 and the upper plate 151 of the cover 150.

[0140] The lens driving device 10 may include a driving unit. The driving unit may move the moving unit relative to the fixed unit 100. The driving unit may include an AF driving unit. The driving unit may include an OIS driving unit. The driving unit may include a coil and a magnet.

[0141] The OIS driving unit can move the lens in a direction perpendicular to the optical axis. The OIS driving unit can move the OIS carrier 200 relative to the fixed unit 100 in a direction perpendicular to the optical axis. The OIS driving unit can include an OIS-x driving unit. The OIS driving unit can include an OIS-y driving unit.

[0142] The lens driving device 10 may include an OIS-x driving unit. The OIS-x driving unit may move the OIS-x carrier 210 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit may move the OIS-x carrier 210 in the x-axis direction perpendicular to the optical axis using electromagnetic force. The OIS-x driving unit may include a coil and a magnet. The OIS-x driving unit may include an OIS-x magnet 420 and an OIS-x coil 410 that move the OIS carrier 200 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit may include an OIS-x magnet 420 and an OIS-x coil 410 that move the OIS-x carrier 210 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit may include an OIS-x magnet 420 and an OIS-x coil 410 that move the OIS-x carrier 210 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit may include an OIS-x magnet 420 and an OIS-x coil 410 that move the OIS-x carrier 210 and the OIS-y carrier 220 in the x-axis direction perpendicular to the optical axis.

[0143] The lens driving device 10 may include an OIS-x coil 410. The OIS-x driving unit may include an OIS-x coil 410. The OIS-x coil 410 may interact with an OIS-x magnet 420. The OIS-x coil 410 may move the OIS-x magnet 420 in the x-axis direction perpendicular to the optical axis. The OIS-x coil 410 may move the OIS-x magnet 420 in the x-axis direction by interacting with the OIS-x magnet 420. The OIS-x coil 410 may face the OIS-x magnet 420. The OIS-x coil 410 may face the OIS-x magnet 420. The OIS-x coil 410 may be disposed at a position corresponding to the OIS-x magnet 420. The OIS-x coil 410 may overlap the OIS-x magnet 420 in the optical axis direction. The OIS-x coil 410 may be disposed on the OIS substrate 130. OIS-x coil 410 may be disposed on the upper surface of OIS substrate 130. OIS-x coil 410 may be disposed on the main body portion of OIS substrate 130. OIS-x coil 410 may be disposed on base 110. OIS-x coil 410 may be disposed on fixed portion 100.

[0144] The lens driving device 10 may include an OIS-x magnet 420. The OIS-x driving unit may include an OIS-x magnet 420. The OIS-x magnet 420 may be disposed in the OIS-x carrier 210. The OIS-x magnet 420 may be disposed on the lower surface of the OIS-x carrier 210. The OIS-x magnet 420 may be fixed to the OIS-x carrier 210. The OIS-x magnet 420 may be coupled to the OIS-x carrier 210. The OIS-x magnet 420 may be adhered to the OIS-x carrier 210 with an adhesive. The OIS-x magnet 420 may be disposed within the cover 150. The OIS-x magnet 420 may interact with the OIS-x coil 410. The OIS-x magnet 420 may electromagnetically interact with the OIS-x coil 410. The OIS-x magnet 420 may be disposed in a position corresponding to the OIS-x coil 410. OIS-x magnet 420 can face OIS-x coil 410. OIS-x magnet 420 can face OIS-x coil 410. OIS-x magnet 420 may overlap OIS-x coil 410 in the optical axis direction.

[0145] The OIS-x magnet 420 and the OIS-y magnet 520 can overlap with an imaginary plane perpendicular to the optical axis direction. In this case, the imaginary plane and the AF magnet 620 may not overlap. The OIS-x magnet 420 and the OIS-y magnet 520 may overlap with each other in the direction perpendicular to the optical axis. The OIS-x magnet 420 and the OIS-y magnet 520 do not have to overlap with the AF magnet 620 in the direction perpendicular to the optical axis.

[0146] The OIS-x magnet 420 may be a four-pole magnet. The OIS-x magnet 420 may include a four-pole magnetized magnet. The OIS-x magnet 420 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be spaced apart in the horizontal direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion. The neutral portion may be arranged parallel to the optical axis.

[0147] The lens driving device 10 may include an OIS-x sensor 430. The OIS-x driving unit may include the OIS-x sensor 430. The OIS-x sensor 430 may be disposed on the OIS board 130. The OIS-x sensor 430 may be disposed in a main body of the OIS board 130. The OIS-x sensor 430 may include a Hall sensor. The OIS-x sensor 430 may sense the OIS-x magnet 420. The OIS-x sensor 430 may sense the magnetic force of the OIS-x magnet 420. The OIS-x sensor 430 may be disposed within the OIS-x coil 410. The OIS-x sensor 430 may overlap the OIS-x coil 410 in a direction perpendicular to the optical axis. The OIS-x sensor 430 may face the OIS-x magnet 420. The OIS-x sensor 430 may be disposed at a position corresponding to the OIS-x magnet 420. The OIS-x sensor 430 can sense the movement of the OIS-x magnet 420. The amount of movement or the position of the OIS-x magnet 420 sensed by the OIS-x sensor 430 may be used as feedback for driving the image stabilization in the x-axis direction.

[0148] The lens driving device 10 may include an OIS-x yoke 440. The OIS-x yoke 440 may be disposed on the OIS substrate 130. The OIS-x yoke 440 may be disposed on the lower surface of the OIS substrate 130. The OIS-x yoke 440 may be disposed in the groove 111 of the base 110. The OIS-x yoke 440 may be disposed at a position corresponding to the OIS-x coil 410. The OIS-x yoke 440 may be disposed at a position corresponding to the OIS-x magnet 420.

[0149] An attractive force may act between the OIS-x magnet 420 and the OIS-x yoke 440. The OIS-x magnet 420 may be pressurized in a direction toward the OIS-x yoke 440. The OIS-x carrier 210 may be pressurized in a direction toward the bottom plate 122 of the housing 120. The OIS-x carrier 210 may place the OIS-x guide balls 710 between itself and the bottom plate 122 of the housing 120 and be pressurized in a direction toward the bottom plate 122 of the housing 120. In this way, the OIS-x guide balls 710 may be maintained in contact with the OIS-x carrier 210 and the bottom plate 122 of the housing 120.

[0150] The lens driving device 10 may include an OIS-y driving unit. The OIS-y driving unit may move the OIS-y carrier 220 in the y-axis direction perpendicular to the optical axis. The OIS-y driving unit may move the OIS-y carrier 220 in the y-axis direction perpendicular to the optical axis via electromagnetic force. The OIS-y driving unit may include a coil and a magnet. The OIS-y driving unit may include an OIS-y magnet 520 and an OIS-y coil 510 that move the OIS carrier 200 in the y-axis direction perpendicular to both the optical axis and the x-axis. The OIS-y driving unit may include an OIS-y magnet 520 and an OIS-y coil 510 that move the OIS-y carrier 220 in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0151] The lens driving device 10 may include an OIS-y coil 510. The OIS-y driving unit may include an OIS-y coil 510. The OIS-y coil 510 may interact with an OIS-y magnet 520. The OIS-y coil 510 may move the OIS-y magnet 520 in the y-axis direction perpendicular to the optical axis. The OIS-y coil 510 may move the OIS-y magnet 520 in the y-axis direction by interacting with the OIS-y magnet 520. The OIS-y coil 510 may face the OIS-y magnet 520. The OIS-y coil 510 may face the OIS-y magnet 520. The OIS-y coil 510 may be disposed at a position corresponding to the OIS-y magnet 520. The OIS-y coil 510 may overlap the OIS-y magnet 520 in the optical axis direction. The OIS-y coil 510 may be disposed on the OIS substrate 130. The OIS-y coil 510 may be disposed on the upper surface of the OIS substrate 130. The OIS-y coil 510 may be disposed on the main body portion of the OIS substrate 130. The OIS-y coil 510 may be disposed on the base 110. The OIS-y coil 510 may be disposed on the fixed portion 100.

[0152] The lens driving device 10 may include an OIS-y magnet 520. The OIS-y driving unit may include an OIS-y magnet 520. The OIS-y magnet 520 may be disposed on the OIS-y carrier 220. The OIS-y magnet 520 may be disposed on the lower surface of the OIS-y carrier 220. The OIS-y magnet 520 may be fixed to the OIS-y carrier 220. The OIS-y magnet 520 may be coupled to the OIS-y carrier 220. The OIS-y magnet 520 may be adhered to the OIS-y carrier 220 with an adhesive. The OIS-y magnet 520 may be disposed within the cover 150. The OIS-y magnet 520 may interact with the OIS-y coil 510. The OIS-y magnet 520 may electromagnetically interact with the OIS-y coil 510. The OIS-y magnet 520 may be disposed at a position corresponding to the OIS-y coil 510. The OIS-y magnet 520 can face the OIS-y coil 510. The OIS-y magnet 520 can face the OIS-y coil 510. The OIS-y magnet 520 may overlap the OIS-y coil 510 in the optical axis direction. The OIS-y magnet 520 may be disposed between the OIS-y carrier 220 and the OIS-y coil 510. The OIS-y magnet 520 may be disposed lower than the OIS-x guide ball 710.

[0153] The OIS-y magnet 520 may be a four-pole magnet. The OIS-y magnet 520 may include a four-pole magnetized magnet. The OIS-y magnet 520 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be spaced apart in the horizontal direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion. The neutral portion may be arranged parallel to the optical axis.

[0154] The lens driving device 10 may include an OIS-y sensor 530. The OIS-y driving unit may include the OIS-y sensor 530. The OIS-y sensor 530 may be disposed on the OIS board 130. The OIS-y sensor 530 may be disposed on the main body of the OIS board 130. The OIS-y sensor 530 may include a Hall sensor. The OIS-y sensor 530 can sense the OIS-y magnet 520. The OIS-y sensor 530 can sense the magnetic force of the OIS-y magnet 520. The OIS-y sensor 530 may be disposed within the OIS-y coil 510. The OIS-y sensor 530 may overlap the OIS-y coil 510 in a direction perpendicular to the optical axis. The OIS-y sensor 530 may face the OIS-y magnet 520. The OIS-y sensor 530 may be disposed at a position corresponding to the OIS-y magnet 520. The OIS-y sensor 530 can sense the movement of the OIS-y magnet 520. The amount of movement or the position of the OIS-y magnet 520 sensed by the OIS-y sensor 530 may be used as feedback for driving the image stabilization in the y-axis direction.

[0155] The lens driving device 10 may include an OIS-y yoke 540. The OIS-y yoke 540 may be disposed on the OIS substrate 130. The OIS-y yoke 540 may be disposed on the lower surface of the OIS substrate 130. The OIS-y yoke 540 may be disposed in the groove 111 of the base 110. The OIS-y yoke 540 may be disposed at a position corresponding to the OIS-y coil 510. The OIS-y yoke 540 may be disposed at a position corresponding to the OIS-y magnet 520.

[0156] An attractive force may act between the OIS-y magnet 520 and the OIS-y yoke 540. The OIS-y magnet 520 may be pressurized in a direction toward the OIS-y yoke 540. The OIS-y carrier 220 may be pressurized in a direction toward the OIS-x carrier 210. The OIS-y carrier 220 may be pressurized in a direction toward the OIS-x carrier 210, with an OIS-y guide ball 720 placed between the OIS-y carrier 220 and the OIS-x carrier 210. In this way, the OIS-y guide ball 720 may be maintained in contact with the OIS-y carrier 220 and the OIS-x carrier 210.

[0157] The lens driving device 10 may include an AF driving unit. The AF driving unit can move the AF carrier 300 in the optical axis direction relative to the fixed unit 100. The AF driving unit can move the AF carrier 300 in the optical axis direction. The AF driving unit can move the AF carrier 300 in the optical axis direction via electromagnetic force. The AF driving unit may include a coil and a magnet.

[0158] The lens driving device 10 may include an AF coil 610. The AF driving unit may include the AF coil 610. The AF coil 610 may interact with an AF magnet 620. The AF coil 610 may move the AF magnet 620 in the optical axis direction. The AF coil 610 may move the AF magnet 620 in the optical axis direction by interacting with the AF magnet 620. The AF coil 610 may face the AF magnet 620. The AF coil 610 may face the AF magnet 620. The AF coil 610 may be disposed at a position corresponding to the AF magnet 620. The AF coil 610 may overlap the AF magnet 620 in a direction perpendicular to the optical axis. The AF coil 610 may be disposed on the AF board 140. The AF coil 610 may be disposed on the inner surface of the AF board 140. The AF coil 610 may be disposed on the inner surface of the AF board 140. The AF coil 610 may be disposed in the housing 120.

[0159] In the first embodiment of the present invention, the AF coil 610 may be disposed on the fixed unit 100. The AF coil 610 may be disposed on the housing 120. That is, the AF coil 610 may be fixed. The AF coil 610 may be fixed and not move even during AF drive. The AF coil 610 may also be fixed and not move even during OIS drive. With such a structure, the distance between the AF coil 610 and the AF magnet 620 may change when the OIS is driven. When the OIS carrier 200 moves due to the OIS drive unit, the AF carrier 300 may also move together with the OIS carrier 200. When the OIS carrier 200 moves due to the OIS-y magnet 520 and the OIS-y coil 510, the AF carrier 300 may also move together with the OIS carrier 200, and the distance between the AF magnet 620 and the AF coil 610 may change. When the OIS carrier 200 is moved by the OIS-y magnet 520 and the OIS-y coil 510, the AF carrier 300 may also move together with the OIS carrier 200, and the distance between the AF magnet 620 and the AF coil 610 may be variable. When the OIS-y carrier 220 is moved by the OIS-y magnet 520 and the OIS-y coil 510, the AF carrier 300 may also move together with the OIS-y carrier 220, and the distance between the AF magnet 620 and the AF coil 610 may be variable. When the OIS-y carrier 220 is moved by the OIS-y magnet 520 and the OIS-y coil 510, the AF carrier 300 may also move together with the OIS-y carrier 220, and the distance in the y-axis direction between the AF magnet 620 and the AF coil 610 may be variable.

[0160] In the first embodiment of the present invention, even if the distance between the AF coil 610 and the AF magnet 620 changes, the AF function can be performed without any problems via the control unit that applies a current to the AF coil 610. For example, the control unit may have an AF drive current preset according to the distance between the AF coil 610 and the AF magnet 620, and the AF drive current may be separately controlled according to the distance between the AF coil 610 and the AF magnet 620.

[0161] When the AF carrier 300 moves in the optical axis direction, the distance between the AF magnet 620 and the AF coil 610 may be maintained. When the AF carrier 300 moves in the x-axis direction, the distance between the AF magnet 620 and the AF coil 610 may be maintained. When the AF carrier 300 moves in the y-axis direction, the distance between the AF magnet 620 and the AF coil 610 may be variable.

[0162] When AF carrier 300 is moved by AF magnet 620 and AF coil 610, the distance in the y-axis direction between AF magnet 620 and AF coil 610 may be maintained constant. When OIS carrier 200 and AF carrier 300 are moved together by OIS-x magnet 420 and OIS-x coil 410, the distance in the y-axis direction between AF magnet 620 and AF coil 610 may be maintained constant.

[0163] The lens driving device 10 may include an AF magnet 620. The AF driving unit may include the AF magnet 620. The AF magnet 620 may be disposed on the AF carrier 300. The AF magnet 620 may be disposed on the outer surface of the AF carrier 300. The AF magnet 620 may be fixed to the AF carrier 300. The AF magnet 620 may be coupled to the AF carrier 300. The AF magnet 620 may be adhered to the AF carrier 300 with an adhesive. The AF magnet 620 may be disposed within the cover 150. The AF magnet 620 may interact with the AF coil 610. The AF magnet 620 may electromagnetically interact with the AF coil 610. The AF magnet 620 may be disposed at a position corresponding to the AF coil 610. The AF magnet 620 may face the AF coil 610. The AF magnet 620 may face the AF coil 610. The AF magnet 620 may overlap the AF coil 610 in a direction perpendicular to the optical axis.

[0164] The AF magnet 620 may be a four-pole magnet. The AF magnet 620 may include a four-pole magnetized magnet. The AF magnet 620 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, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0165] Alternatively, the AF magnet 620 may have a shape that minimizes magnetic field interference with adjacent magnets. The AF magnet 620 may have an outer surface facing the AF coil 610, an inner surface opposite the outer surface, an upper surface, a lower surface, both side surfaces, and a chamfered surface 625 that connects the inner surface and both side surfaces. In this case, the chamfered surface 625 can minimize magnetic field interference with adjacent magnets. The chamfered surface 625 may be an inclined surface. Alternatively, the chamfered surface 625 may be formed on only one side of the AF magnet 620. The chamfered surface 625 can connect one side of the AF magnet 620 to the inner surface.

[0166] In another modified example, the AF magnet 620 may include a yoke disposed thereon. The AF magnet 620 may include an outer surface facing the AF coil 610, an inner surface opposite the outer surface, an upper surface, a lower surface, and both side surfaces. In this case, yokes may be disposed on both sides of the AF magnet 620. In this case, the yokes can minimize magnetic field interference between the AF magnet 620 and magnets disposed adjacent to the AF magnet 620. In a modified example, the yoke may be disposed on only one side of the AF magnet 620. The yoke may be formed to a size corresponding to one side of the AF magnet 620. The yoke may be fixed to one side of the AF magnet 620 with an adhesive.

[0167] The lens driving device 10 may include an AF sensor 630. The AF driving unit may include the AF sensor 630. The AF sensor 630 may be a Hall sensor. The AF sensor 630 may be disposed on the AF board 140. The AF sensor 630 may be disposed on an inner surface of the AF board 140. The AF sensor 630 may sense the AF magnet 620. The AF sensor 630 may sense movement of the AF magnet 620. The movement amount or position of the AF magnet 620 sensed by the AF sensor 630 may be used as feedback for autofocus driving.

[0168] The AF sensor 630 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 610. The driver IC may supply a current to the AF coil 610.

[0169] The AF sensor 630 may be disposed within the AF coil 610. The AF sensor 630 may overlap the neutral portion of the AF magnet 620 in a direction perpendicular to the optical axis. In a modified example, the AF sensor 630 may be disposed outside the AF coil 610.

[0170] The lens driving device 10 may include an AF yoke 640. The AF yoke 640 may be disposed on the AF substrate 140. The AF yoke 640 may be disposed on an outer surface of the AF substrate 140. An attractive force may act between the AF magnet 620 and the AF yoke 640. The AF magnet 620 may be pressed toward the AF yoke 640. The AF carrier 300 may be pressed toward a first side plate of the housing 120. In this case, the AF yoke 640 may be disposed at a position corresponding to the first side plate of the housing 120. The AF carrier 300 may place an AF guide ball 730 between the AF carrier 300 and the first side plate of the housing 120 and pressurize the AF guide ball 730 toward the first side plate of the housing 120. As a result, the AF guide ball 730 may be maintained in contact with the AF carrier 300 and the first side plate of the housing 120.

[0171] 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 may guide the movement of the movable part relative to the fixed part 100 in a specific direction.

[0172] The lens driving device 10 may include an OIS-x guide ball 710. The OIS-x guide ball 710 can guide the movement of the OIS-x carrier 210 relative to the housing 120 in the x-axis direction. The OIS-x guide ball 710 may be disposed between the housing 120 and the OIS-x carrier 210. The OIS-x guide ball 710 can be in contact with the housing 120 and the OIS-x carrier 210. The OIS-x guide ball 710 may be disposed between the groove 123 in the bottom plate 122 of the housing 120 and the groove 211 on the bottom surface of the OIS-x carrier 210. The OIS-x guide ball 710 can be in contact with the groove 123 in the bottom plate 122 of the housing 120 and the groove 211 on the bottom surface of the OIS-x carrier 210. OIS-x guide ball 710 may include a first ball that contacts OIS-x carrier 210 and housing 120 at four points, and a second ball that contacts OIS-x carrier 210 and housing 120 at three points. OIS-x guide ball 710 may be spherical. OIS-x guide ball 710 may be made of metal. Grease may be applied to the surface of OIS-x guide ball 710.

[0173] The OIS-x guide ball 710 can include multiple balls. The OIS-x guide ball 710 can include four balls. The OIS-x guide ball 710 can include four balls that are spaced apart from one another.

[0174] The lens driving device 10 may include an OIS-y guide ball 720. The OIS-y guide ball 720 can guide the movement of the OIS-y carrier 220 relative to the OIS-x carrier 210 in the y-axis direction. The OIS-y guide ball 720 may be disposed between the OIS-x carrier 210 and the OIS-y carrier 220. The OIS-y guide ball 720 can be in contact with the OIS-x carrier 210 and the OIS-y carrier 220. The OIS-y guide ball 720 may be disposed between the groove 212 on the upper surface of the OIS-x carrier 210 and the groove 222 on the lower surface of the OIS-y carrier 220. The OIS-y guide ball 720 can be in contact with the groove 212 on the upper surface of the OIS-x carrier 210 and the groove 222 on the lower surface of the OIS-y carrier 220. The OIS-y guide ball 720 may include a first ball that contacts the OIS-x carrier 210 and the OIS-y carrier 220 at four points, and a second ball that contacts the OIS-x carrier 210 and the OIS-y carrier 220 at three points. The OIS-y guide ball 720 may be spherical. The OIS-y guide ball 720 may be made of metal. Grease may be applied to the surface of the OIS-y guide ball 720.

[0175] The OIS-y guide ball 720 can include multiple balls. The OIS-y guide ball 720 can include four balls. The OIS-y guide ball 720 can include four balls that are spaced apart from one another.

[0176] In a variant, the OIS guide balls may include a common ball that guides in both the x-axis direction and the y-axis direction. The common ball may be disposed between the OIS-y carrier 220 and the housing 120. In this case, one of the four OIS-y guide balls 720 may be replaced with the common ball.

[0177] The lens driving device 10 may include an AF guide ball 730. The AF guide ball 730 can guide the movement of the AF carrier 300 relative to the OIS-y carrier 220 in the optical axis direction. The AF guide ball 730 may be disposed between the OIS-y carrier 220 and the AF carrier 300. The AF guide ball 730 may be disposed between the OIS-y carrier 220 and the AF carrier 300 in a direction perpendicular to the optical axis. The AF guide ball 730 may be disposed in a groove 221 of the OIS-y carrier 220. The AF guide ball 730 may be disposed in a groove 310 of the AF carrier 300. The AF guide ball 730 may include a first ball that contacts the OIS-y carrier 220 and the AF carrier 300 at four points and a second ball that contacts the OIS-y carrier 220 and the AF carrier 300 at three points. The AF guide ball 730 may be spherical. The AF guide ball 730 may be made of metal. The surface of the AF guide ball 730 may be coated with grease.

[0178] The AF guide balls 730 may include multiple balls. The AF guide balls 730 may include six balls. Three AF guide balls 730 may be arranged on one side of the AF magnet 620, and the remaining three AF guide balls 730 may be arranged on the other side of the AF magnet 620.

[0179] 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.

[0180] 26 to 28 are diagrams illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention. Fig. 26 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. 27 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. 28 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.

[0181] The moving part may be disposed at a position separated from both the upper plate 151 of the cover 150 and the base 110 in an initial position where no current is applied to the AF coil 610. In this case, the moving part may be an AF moving part. The moving part may include an AF carrier 300.

[0182] When a forward current is applied to the AF coil 610, the AF magnet 620 can move upward in the optical axis direction due to electromagnetic interaction between the AF coil 610 and the AF magnet 620 (see A in FIG. 27). At this time, the AF carrier 300 can move upward in the optical axis direction together with the AF magnet 620. Furthermore, the lens can move upward in the optical axis direction together with the AF carrier 300. Accordingly, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0183] When a reverse current is applied to the AF coil 610, the AF magnet 620 can move downward in the optical axis direction due to electromagnetic interaction between the AF coil 610 and the AF magnet 620 (see B in FIG. 28). At this time, the AF carrier 300 can move downward in the optical axis direction together with the AF magnet 620. Furthermore, the lens can move downward in the optical axis direction together with the AF carrier 300. Accordingly, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0184] Meanwhile, during the movement of the AF magnet 620, the AF sensor 630 can sense the strength of the magnetic field of the AF magnet 620 and detect 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 630 may be used for autofocus feedback control.

[0185] 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.

[0186] 29 to 32 are diagrams illustrating the image stabilization drive of the lens driving device according to the first embodiment of the present invention. Figs. 29 and 31 are cross-sectional views illustrating the state of the moving part in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig. 30 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil and the OIS-y carrier moves in the x-axis direction perpendicular to the optical axis. Fig. 32 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the OIS-y carrier moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0187] 29 and 31, the moving unit may be placed in an initial position where no current is applied to the OIS-x coil 410 and the OIS-y coil 510. At this time, the moving unit may be an OIS moving unit. Alternatively, the moving unit may include an OIS moving unit and an AF moving unit. The moving unit may include an OIS-x carrier 210, an OIS-y carrier 220, and an AF carrier 300.

[0188] When a current is applied to the OIS-x coil 410, electromagnetic interaction between the OIS-x coil 410 and the OIS-x magnet 420 causes the OIS-x magnet 420 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 30 ). At this time, the OIS-x carrier 210 moves in the x-axis direction together with the OIS-x magnet 420. Furthermore, the OIS-y carrier 220, AF carrier 300, and lens move in the x-axis direction together with the OIS-x carrier 210. When a positive current is applied to the OIS-x coil 410, the OIS-x magnet 420, OIS-x carrier 210, OIS-y carrier 220, AF carrier 300, and lens move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 410, the OIS-x magnet 420, the OIS-x carrier 210, the OIS-y carrier 220, the AF carrier 300, and the lens can move in the other direction on the x-axis.

[0189] When a current is applied to the OIS-y coil 510, electromagnetic interaction between the OIS-y coil 510 and the OIS-y magnet 520 causes the OIS-y magnet 520 to move in the y-axis direction, which is perpendicular to the optical axis (see A in FIG. 32). At this time, the OIS-y carrier 220 can move in the y-axis direction together with the OIS-y magnet 520. Furthermore, the AF carrier 300 and the lens can move in the y-axis direction together with the OIS-y carrier 220. When a forward current is applied to the OIS-y coil 510, the OIS-y magnet 520, the OIS-y carrier 220, the AF carrier 300, and the lens can move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 510, the OIS-y magnet 520, the OIS-y carrier 220, the AF carrier 300, and the lens can move in the other direction on the y-axis.

[0190] Meanwhile, the OIS-x sensor 430 can sense the strength of the magnetic field of the OIS-x magnet 420 and detect the movement amount and position of the OIS-x magnet 420. The movement amount and position sensed by the OIS-x sensor 430 may be used for image stabilization feedback control in the x-axis direction. The OIS-y sensor 530 can sense the strength of the magnetic field of the OIS-y magnet 520 and detect the movement amount and position of the OIS-y magnet 520. The movement amount and position sensed by the OIS-y sensor 530 may be used for image stabilization feedback control in the y-axis direction.

[0191] A camera device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0192] FIG. 33 is an exploded perspective view of the camera device according to the first embodiment of the present invention.

[0193] The camera device 10A may include a camera module.

[0194] 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 a holder 210 of the lens driving device 10. The lens module 20 may be coupled to the holder 210 by screws and / or adhesive. The lens module 20 may move integrally with the holder 210.

[0195] The camera device 10A may include a filter 30. The filter 30 can help block light of a specific frequency band from entering the image sensor 60, among the light passing through the lens module 20. 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 can include an infrared filter. The infrared filter can block light in the infrared range from entering the image sensor 60.

[0196] 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 be incident on the image sensor 60. An adhesive member may bond or adhere the base 310 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-curing adhesive, and an ultraviolet-curing adhesive.

[0197] The camera device 10A may include a printed circuit board (PCB) 50. The printed circuit board 50 may be a substrate or a circuit board. The lens driver 10 may be disposed on the printed circuit board 50. A sensor base 40 may be disposed between the printed circuit board 50 and the lens driver 10. The printed circuit board 50 may be electrically connected to the lens driver 10. An image sensor 60 may be disposed on the printed circuit board 50. The printed circuit board 50 may include various circuits, elements, a 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.

[0198] 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. In one example, the image sensor 60 may be attached to the printed circuit board 50 using surface mounting technology (SMT). In 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 of a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID.

[0199] 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.

[0200] 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. In addition, the control unit 80 may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device 10.

[0201] 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.

[0202] An optical apparatus according to a first embodiment of the present invention will now be described with reference to the drawings.

[0203] FIG. 34 is a perspective view of the optical device according to the first embodiment of the present invention, and FIG. 35 is a perspective view of the optical device according to a modified example.

[0204] The optical device 1 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 images or photographs.

[0205] The optical device 1 may include a main body 20. The optical device 1 may include a camera device 10A. The camera device 10A may be disposed in the main body 20. The camera device 10A may photograph an object. The optical device 1 may include a display. The display may be disposed in the main body 20. The display may output one or more of a video and an image photographed by the camera device 10A. The display may be disposed on a first surface of the main body 20. The camera device 10A may be disposed on one or more of the first surface and a second surface opposite the first surface of the main body 20. As shown in FIG. 34, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 35, the camera device 10A-1 may have triple cameras arranged horizontally.

[0206] 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.

[0207] FIG. 36 is a perspective view of a lens driving device according to a second embodiment of the present invention. FIG. 37 is a cross-sectional view taken along line aa in FIG. 36. FIG. 38 is a cross-sectional view taken along line bb in FIG. 36. FIG. 39 is a cross-sectional view taken along line cc in FIG. 36. FIG. 40 is a cross-sectional view taken along line dd in FIG. 36. FIG. 41 is a cross-sectional view taken along line ee in FIG. 36. FIG. 42 is a cross-sectional perspective view of a lens driving device according to a second embodiment of the present invention, taken along a direction perpendicular to the optical axis. FIG. 43a is an exploded perspective view of a lens driving device according to a second embodiment of the present invention. FIG. 44 is an exploded perspective view of a lens driving device according to a second embodiment of the present invention, viewed from a direction different from that of FIG. 43a. FIG. 45 is a perspective view of the lens driving device according to the second embodiment of the present invention with the cover removed. FIG. 46 is a perspective view of the lens driving device according to the second embodiment of the present invention with the cover removed, viewed from a direction different from that of FIG. 45. FIG. 47 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. 48 is a perspective view illustrating an OIS-x moving portion and related components of the lens driving device according to the second embodiment of the present invention. FIG. 49 is a bottom perspective view illustrating an OIS-x moving unit and related components of a lens driving device according to a second embodiment of the present invention. FIG. 50 is a perspective view illustrating an OIS-y moving unit and related components of a lens driving device according to a second embodiment of the present invention. FIG. 51 is a bottom perspective view illustrating an OIS-y moving unit and related components of a lens driving device according to a second embodiment of the present invention. FIG. 52 is a perspective view illustrating an AF moving unit and related components of a lens driving device according to a second embodiment of the present invention. FIG. 53 is a bottom view of the lens driving device according to the second embodiment of the present invention with the base and cover removed. FIG. 54 is a perspective view illustrating the driving unit, guide members, and related components of the lens driving device according to the second embodiment of the present invention, together with the base. FIG. 55 is a partially see-through plan view illustrating the arrangement of an AF magnet and an AF attractive force yoke of a lens driving device according to a second embodiment of the present invention. FIG. 56 is a front view illustrating the arrangement of an AF magnet and an AF attractive force yoke of a lens driving device according to a second embodiment of the present invention.

[0208] 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.

[0209] 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 may move relative to the fixed portion 1100. The fixed portion 1100 may be disposed outside the moving portion. The fixed portion 1100 may house the moving portion inside.

[0210] The lens driving device 1010 may include a base 1110. The fixing part 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-x carrier 1310. The base 1110 may be disposed below the OIS-y carrier 1410. The base 1110 may be coupled to the cover 1120. The AF carrier 1210, the OIS-x carrier 1310, and the OIS-y carrier 1410 may be disposed on the base 1110. The AF carrier 1210, the OIS-x carrier 1310, and the OIS-y carrier 1410 may be disposed on a bottom plate 1112 of the base 1110. The AF carrier 1210, the OIS-x carrier 1310, and the OIS-y carrier 1410 may be disposed within the base 1110. The AF carrier 1210 , the OIS-x carrier 1310 and the OIS-y carrier 1410 may be disposed within the side plate 1113 of the base 1110 .

[0211] The base 1110 may include a groove 1111. The groove 1111 may be an "OIS-x guide ball receiving groove." The groove 1111 may be formed in a concave shape in the base 1110. The groove 1111 may be formed by recessing one surface of the base 1110. The groove 1111 may be formed in the lower plate 1112 of the base 1110. The groove 1111 may be formed on the upper surface of the lower plate 1112 of the base 1110. The OIS-x guide ball 1820 may be disposed in the groove 1111. The groove 1111 may be in direct contact with the OIS-x guide ball 1820. The groove 1111 may be disposed in the x-axis direction perpendicular to the optical axis. The groove 1111 may include a plurality of grooves. The groove 1111 may include four grooves. The four grooves may be disposed parallel to one another. The grooves 1111 can include a first groove that contacts the OIS-x guide ball 1820 at two points and a second groove that contacts the OIS-x guide ball 1820 at one point. In an alternative embodiment, both the first groove and the second groove can contact the OIS-x guide ball 1820 at two points.

[0212] The base 1110 may include a lower plate 1112. The base 1110 may include side plates 1113. The side plates 1113 of the base 1110 may be "sides." The side plates 1113 of the base 1110 may extend from the upper surface of the lower plate 1112. The side plates 1113 of the base 1110 may include multiple side plates. The side plates 1113 of the base 1110 may include four side plates. The base 1110 may include a first side portion and a second side portion opposite each other, and a third side portion and a fourth side portion opposite each other. The AF coil 1520 may be disposed on the first side of the base 1110. The OIS-x coil 1620 may be disposed on the second side of the base 1110. The OIS-y coil 1720 may be disposed on the third side of the base 1110.

[0213] The base 1110 may include a groove. The groove may be a "yoke receiving groove." The groove may be formed in the bottom plate 1112 of the base 1110. The groove may be formed in the top surface of the bottom plate 1112 of the base 1110. An OIS-x gravity yoke 1920 and an OIS-y gravity yoke 1930 may be disposed in the groove.

[0214] The lens driving device 1010 may include a cover 1120. The fixing 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 be adhered to the base 1110 with an adhesive. The cover 1120 may house the AF carrier 1210 therein. The cover 1120 may house the OIS-x carrier 1310 therein. The cover 1120 may house the OIS-y carrier 1410 therein. The cover 1120 may be a shielding member. The cover 1120 may be a shielding can.

[0215] The cover 1120 may include an upper plate 1121. The upper plate 1121 may be disposed on the moving part. The upward movement of the moving part may be restricted by the moving part contacting the upper plate 1121. The upper plate 1121 may include a hole through which light passes.

[0216] 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 stepped portions 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 each other, and a third side plate and a fourth side plate disposed opposite each other.

[0217] The AF magnet 1510 may be disposed between the AF carrier 1210 and a first side plate of the cover 1120. The OIS-x magnet 1610 may be disposed between the AF carrier 1210 and a second side plate of the cover 1120. The OIS-y magnet 1710 may be disposed between the AF carrier 1210 and a third side plate of the cover 1120.

[0218] The lens driving device 1010 may include a side substrate 1130. The fixed unit 1100 may include a side substrate 1130. The side substrate 1130 may be disposed on the base 1110. The side substrate 1130 may be disposed on a side plate 1113 of the base 1110. The side substrate 1130 may be disposed on an outer surface of a side plate 1122 of the cover 1120. The side substrate 1130 may be disposed parallel to the optical axis. The side substrate 1130 may be a circuit board. The side substrate 1130 may be a printed circuit board. The side substrate 1130 may include a flexible printed circuit board (FPCB). The side substrate 1130 may be flexible. The side substrate 1130 may be bendable. The AF coil 1520 may be disposed on the side substrate 1130. The AF coil 1520 may be disposed on an inner surface of the side substrate 1130. The AF sensor 1530 may be disposed on the side substrate 1130. The AF sensor 1530 may be disposed on an inner surface of the side substrate 1130. The capacitor 1540 may be disposed on the side substrate 1130. The capacitor 1540 may be disposed on an inner surface of the side substrate 1130.

[0219] The side substrate 1130 may include a main body portion. The AF coil 1520 may be disposed in the main body portion. The side substrate 1130 may include a terminal 1131. The terminal 1131 may be disposed in a terminal portion extending downward from the main body portion. The terminal 1131 may be formed at a lower end portion of the side substrate 1130. The terminal 1131 may protrude below the base 1110.

[0220] The terminal 1131 may include a plurality of terminals. The terminal 1131 of the side substrate 1130 may be electrically connected to the AF coil 1520. The terminal 1131 of the side substrate 1130 may be electrically connected to the AF sensor 1530. The terminal 1131 may be coupled to the printed circuit board 1050. The terminal 1131 may be coupled to the printed circuit board 1050 via solder. The terminal 1131 may be coupled to the printed circuit board 1050 via an electrically conductive member.

[0221] The lens driving device 1010 may include a lower substrate 1140. The fixed part 1100 may include a lower substrate 1140. The lower substrate 1140 may be disposed on the base 1110. The lower substrate 1140 may be disposed on a lower plate 1112 of the base 1110. The lower substrate 1140 may be disposed on an upper surface of the lower plate 1112 of the base 1110. The lower substrate 1140 may be disposed perpendicular to the optical axis. The lower substrate 1140 may be a circuit board. The lower substrate 1140 may be a printed circuit board. The lower substrate 1140 may include a flexible printed circuit board (FPCB). The lower substrate 1140 may be flexible. The lower substrate 1140 may be bendable. The OIS-x coil 1620 may be disposed on the lower substrate 1140. The OIS-x coil 1620 may be disposed on an upper surface of the lower substrate 1140. The OIS-x sensor 1630 may be disposed on the lower substrate 1140. The OIS-x sensor 1630 may be disposed on the upper surface of the lower substrate 1140. The OIS-y coil 1720 may be disposed on the lower substrate 1140. The OIS-y coil 1720 may be disposed on the upper surface of the lower substrate 1140. The OIS-y sensor 1730 may be disposed on the lower substrate 1140. The OIS-y sensor 1730 may be disposed on the upper surface of the lower substrate 1140.

[0222] The lower substrate 1140 may include a main body portion. The OIS-x coil 1620 and the OIS-y coil 1720 may be disposed in the main body portion. The lower substrate 1140 may include a terminal 1141. The terminal 1141 may be disposed in a terminal portion that curves downward and extends from the main body portion. The terminal 1141 may be formed at a lower end portion of the lower substrate 1140. The terminal 1141 may protrude below the base 1110.

[0223] The terminal 1141 may include a plurality of terminals. The terminal 1141 of the lower substrate 1140 may include a first terminal electrically connected to the OIS-x coil 1620. The terminal 1141 of the lower substrate 1140 may include a second terminal electrically connected to the OIS-x sensor 1630. The terminal 1141 of the lower substrate 1140 may include a third terminal electrically connected to the OIS-y coil 1720. The terminal 1141 of the lower substrate 1140 may include a fourth terminal electrically connected to the OIS-y sensor 1730. The terminal 1141 may be coupled to the printed circuit board 1050. The terminal 1141 may be coupled to the printed circuit board 1050 via solder. The terminal 1141 may be coupled to the printed circuit board 1050 via a conductive member.

[0224] 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 movably disposed on the fixed unit 1100. The moving unit can be moved with respect to the fixed unit 1100 by the driving unit. The moving unit can move during AF driving. The moving unit can move during OIS driving. A lens can be coupled to the moving unit.

[0225] The lens driving device 1010 may include an AF moving unit 1200. The AF moving unit 1200 may be disposed in the fixed unit 1100. The AF moving unit 1200 may be disposed within the fixed unit 1100. The AF moving unit 1200 may be disposed on the fixed unit 1100. The AF moving unit 1200 may be disposed within the OIS-x moving unit 1300. The AF moving unit 1200 may be disposed on the OIS-x moving unit 1300. The AF moving unit 1200 may be disposed within the OIS-y moving unit 1400. The AF moving unit 1200 may be disposed on the OIS-y moving unit 1400. The AF moving unit 1200 may be disposed movably. The AF moving unit 1200 is capable of moving. The AF moving unit 1200 is capable of moving in the optical axis direction. The AF moving unit 1200 can be moved in the optical axis direction relative to the fixed unit 1100, the OIS-x moving unit 1300, and the OIS-y moving unit 1400 by the AF driving unit 1500. The AF moving unit 1200 can move during AF driving.

[0226] When a current is applied to the OIS-y coil 1720, the AF mover 1200 can move together with the OIS-y mover 1400. When a current is applied to the OIS-x coil 1620, the AF mover 1200 and the OIS-y mover 1400 can move together with the OIS-x mover 1300.

[0227] 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 a "bobbin." The AF carrier 1210 may be an "AF holder." 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 OIS-x carrier 1310. The AF carrier 1210 may be disposed on the OIS-x carrier 1310. The AF carrier 1210 may be disposed within the OIS-y carrier 1410. The AF carrier 1210 may be disposed on the OIS-y carrier 1410. The AF carrier 1210 may be disposed within the cover 1120. The AF carrier 1210 may be disposed so as to be movable in the optical axis direction. The AF carrier 1210 is movable. The AF carrier 1210 can move in the direction of the optical axis.

[0228] The AF carrier 1210 may include a groove 1211. The groove 1211 may be an "AF guide ball receiving groove." An AF guide ball 1810 may be disposed in the groove 1211. The groove 1211 may be in direct contact with the AF guide ball 1810. The groove 1211 may include a plurality of grooves. The groove 1211 may include four grooves. The number of grooves 1211 may be the same as the number of AF guide balls 1810. One AF guide ball 1810 may be disposed in each of the plurality of grooves. The groove 1211 may include a first groove that contacts the AF guide ball 1810 at two points and a second groove that contacts the AF guide ball 1810 at one point. In a modified example, both the first groove and the second groove may contact the AF guide ball 1810 at two points.

[0229] The AF carrier 1210 may include a groove 1212. The groove 1212 may be an "AF magnet accommodating groove." The groove 1212 may be formed on the outer surface of the AF carrier 1210. An AF magnet 1510 may be disposed in the groove 1212. The groove 1212 may be formed in a shape corresponding to the AF magnet 1510.

[0230] The lens driving device 1010 may include an OIS-x moving unit 1300. The OIS-x moving unit 1300 may be disposed in the fixed unit 1100. The OIS-x moving unit 1300 may be disposed within the fixed unit 1100. The OIS-x moving unit 1300 may be disposed on the fixed unit 1100. The OIS-x moving unit 1300 may be disposed below the OIS-y moving unit 1400. The OIS-x moving unit 1300 may be disposed between the fixed unit 1100 and the AF moving unit 1200. The OIS-x moving unit 1300 may be disposed between the fixed unit 1100 and the OIS-y moving unit 1400. The OIS-x moving unit 1300 may be disposed movably. The OIS-x moving unit 1300 can be moved in the x-axis direction relative to the fixed unit 1100 by the OIS-x driving unit 1600. The OIS-x movement unit 1300 can move when the OIS is driven. When the OIS-x movement unit 1300 moves in the x-axis direction, the OIS-y movement unit 1400 and the AF movement unit 1200 can also move together.

[0231] The lens driving device 1010 may include an OIS-x carrier 1310. The OIS-x moving unit 1300 may include an OIS-x carrier 1310. The OIS-x carrier 1310 may be an "OIS-x holder." The OIS-x carrier 1310 may be disposed within the base 1110. The OIS-x carrier 1310 may be disposed on the base 1110. The OIS-x carrier 1310 may be disposed below the OIS-y carrier 1410. The OIS-x carrier 1310 may be disposed within the cover 1120. The OIS-x carrier 1310 may be disposed between the base 1110 and the AF carrier 1210. The OIS-x carrier 1310 may be disposed between the base 1110 and the OIS-y carrier 1410. The OIS-x carrier 1310 may be disposed to be movable in the x-axis direction.

[0232] The OIS-x carrier 1310 may include a groove 1311. The groove 1311 may be an "OIS-y guide ball receiving groove." The groove 1311 may be formed on the upper surface of the OIS-x carrier 1310. The OIS-y guide ball 1830 may be disposed in the groove 1311. The groove 1311 may be in direct contact with the OIS-y guide ball 1830. The groove 1311 may be disposed in the y-axis direction. The groove 1311 may include a plurality of grooves. The groove 1311 may include four grooves. The groove 1311 may include a first groove that contacts the OIS-y guide ball 1830 at two points and a second groove that contacts the OIS-y guide ball 1830 at one point. In a variant, both the first groove and the second groove may contact the AF guide ball 1810 at two points.

[0233] The OIS-x carrier 1310 may include a groove 1312. The groove 1312 may be an "OIS-x guide ball receiving groove." The groove 1312 may be formed in the OIS-x carrier 1310. The groove 1312 may be formed on the lower surface of the OIS-x carrier 1310. The OIS-x guide ball 1820 may be disposed in the groove 1312. The groove 1312 may be in direct contact with the OIS-x guide ball 1820. The groove 1312 may be disposed in the x-axis direction. The groove 1312 may include multiple grooves. The groove 1312 may include four grooves. The groove 1312 may include a first groove that contacts the OIS-x guide ball 1820 at two points and a second groove that contacts the OIS-x guide ball 1820 at one point. In a variant, both the first groove and the second groove may contact the OIS-x guide ball 1820 at two points.

[0234] OIS-x carrier 1310 may include groove 1315. Groove 1315 may be an "OIS-x magnet accommodating groove." Groove 1315 may be formed on a side surface of OIS-x carrier 1310. OIS-x magnet 1610 may be disposed in groove 1315. Groove 1315 may include a shape corresponding to OIS-x magnet 1610.

[0235] The OIS-x carrier 1310 may include a groove 1316. The groove 1316 may be an "attraction magnet avoidance groove." The groove 1316 may be formed as a recess in the side surface of the OIS-x carrier 1310. The groove 1316 may be formed at a position corresponding to the protrusion 1415 of the OIS-y carrier 1410.

[0236] The lens driving device 1010 may include an OIS-y moving unit 1400. The OIS-y moving unit 1400 may be disposed on the fixed unit 1100. The OIS-y moving unit 1400 may be disposed within the fixed unit 1100. The OIS-y moving unit 1400 may be disposed on the fixed unit 1100. The OIS-y moving unit 1400 may be disposed on the OIS-x moving unit 1300. The OIS-y moving unit 1400 may be disposed between the fixed unit 1100 and the AF moving unit 1200. The OIS-y moving unit 1400 may be disposed between the fixed unit 1100 and the AF moving unit 1200 in a direction perpendicular to the optical axis. The OIS-y moving unit 1400 may be disposed between the fixed unit 1100 and the AF moving unit 1200 in the x-axis direction. The OIS-y movement unit 1400 may be movably disposed on the fixed unit 1100. The OIS-y movement unit 1400 can be moved in the y-axis direction relative to the fixed unit 1100 by an OIS-y drive unit 1700. The OIS-y movement unit 1400 can be moved in the y-axis direction relative to the OIS-x movement unit 1300 by the OIS-y drive unit 1700. The OIS-y movement unit 1400 can move when the OIS is driven. When the OIS-y movement unit 1400 moves, the AF movement unit 1200 can also move.

[0237] The lens driving device 1010 may include an OIS-y carrier 1410. The OIS-y moving unit 1400 may include an OIS-y carrier 1410. The OIS-y carrier 1410 may be an "OIS-y holder." The OIS-y carrier 1410 may be disposed in the base 1110. The OIS-y carrier 1410 may be disposed within the base 1110. The OIS-y carrier 1410 may be disposed on the base 1110. The OIS-y carrier 1410 may be disposed within the cover 1120. The OIS-y carrier 1410 may be disposed in the OIS-x carrier 1310. The OIS-y carrier 1410 may be disposed on the OIS-x carrier 1310. The OIS-y carrier 1410 may be disposed between the base 1110 and the AF carrier 1210. The OIS-y carrier 1410 may be disposed between the base 1110 and the AF carrier 1210 in a direction perpendicular to the optical axis. The OIS-y carrier 1410 may be disposed between the side plate 1113 of the base 1110 and the AF carrier 1210 in the x-axis direction. The OIS-y carrier 1410 may be disposed so as to be movable in the y-axis direction. The OIS-y carrier 1410 may be disposed between the base 1110 and the OIS-x carrier 1310.

[0238] The OIS-y carrier 1410 may include a groove 1411. The groove 1411 may be an "AF guide ball receiving groove." The groove 1411 may be formed in a concave shape in the OIS-y carrier 1410. The groove 1411 may be formed on the inner surface of the OIS-y carrier 1410. The AF guide ball 1810 may be disposed in the groove 1411. The groove 1411 may be in direct contact with the AF guide ball 1810. The groove 1411 may be disposed in the optical axis direction. The groove 1411 may include a plurality of grooves. The groove 1411 may include two grooves. The groove 1411 may include a first groove that contacts the AF guide ball 1810 at two points and a second groove that contacts the AF guide ball 1810 at one point. In a modified example, both the first groove and the second groove may contact the AF guide ball 1810 at two points.

[0239] The OIS-y carrier 1410 may include a groove 1412. The groove may be an "OIS-y guide ball receiving groove." The groove 1412 may be formed concavely in the OIS-y carrier 1410. The groove 1412 may be formed on the lower surface of the OIS-y carrier 1410. The OIS-y guide ball 1830 may be disposed in the groove 1412. The groove 1412 may be in direct contact with the OIS-y guide ball 1830. The groove 1412 may be disposed in the y-axis direction. The groove 1412 may include a plurality of grooves. The groove 1412 may include four grooves. The four grooves may be disposed parallel to one another. The groove 1412 may include a first groove that contacts the OIS-y guide ball 1830 at two points and a second groove that contacts the OIS-y guide ball 1830 at one point. In a variant, both the first groove and the second groove can contact the OIS-y guide ball 1830 at two points.

[0240] The OIS-y carrier 1410 may include a groove 1413. The groove 1413 may be an "OIS-y magnet accommodating groove." The groove 1413 may be formed on the outer surface of the OIS-y carrier 1410. An OIS-y magnet 1710 may be disposed in the groove 1413. The groove 1413 may include a shape corresponding to the OIS-y magnet 1710.

[0241] The OIS-y carrier 1410 may include a groove. The groove may be an "AF attraction yoke accommodating groove." The groove may be formed on the outer surface of the OIS-y carrier 1410. The AF attraction yoke 1910 may be disposed in the groove. The groove may have a shape corresponding to the AF attraction yoke 1910. The groove may include a plurality of grooves. The groove may include two grooves. The number of grooves may be formed corresponding to the number of AF attraction yokes 1910.

[0242] The OIS-y carrier 1410 may include a protrusion 1415. The protrusion 1415 may protrude downward. The protrusion 1415 of the OIS-y carrier 1410 may overlap the OIS-x carrier 1310 in a direction perpendicular to the optical axis. An attractive magnet 1955 may be disposed on the protrusion 1415 of the OIS-y carrier 1410.

[0243] The lens driving device 1010 may include a driving unit. The driving unit may move a moving unit relative to a fixed unit. The driving unit may include an AF driving unit 1500. The driving unit may include OIS driving units 1600 and 1700. The driving unit may include a coil and a magnet.

[0244] The lens driving device 1010 may include an AF driving unit 1500. The AF driving unit 1500 may move the AF movement unit 1200 in the optical axis direction. The AF driving unit 1500 may move the AF carrier 1210 in the optical axis direction. The AF driving unit 1500 may move the AF carrier 1210 in the optical axis direction using electromagnetic force. The AF driving unit 1500 may include a coil and a magnet. The AF driving unit 1500 may include a coil and a magnet that interact with each other. The AF coil 1520 and the AF magnet 1510 may move the AF movement unit 1200 in the optical axis direction.

[0245] When the OIS-x driver 1600 moves the OIS-x mover 1300, the OIS-y mover 1400, and the AF mover 1200, the distance between the mutually facing surfaces of the AF coil 1520 and the AF magnet 1510 can vary. When the OIS-y driver 1700 moves the OIS-y mover 1400 and the AF mover 1200, the distance between the mutually facing surfaces of the AF coil 1520 and the AF magnet 1510 does not vary, and the AF magnet 1510 can be eccentric with respect to the AF coil 1520.

[0246] The lens driving device 1010 may include an AF magnet 1510. The AF driving unit 1500 may include the AF magnet 1510. The AF magnet 1510 may be disposed in the AF movement unit 1200. The AF magnet 1510 may be disposed in the AF carrier 1210. The AF magnet 1510 may be disposed in a groove 1212 of the AF carrier 1210. The AF magnet 1510 may be disposed on an outer surface of the AF carrier 1210. The AF magnet 1510 may be fixed to the AF carrier 1210. The AF magnet 1510 may be coupled to the AF carrier 1210. The AF magnet 1510 may be adhered to the AF carrier 1210 with an adhesive. The AF magnet 1510 may be disposed within the cover 1120. The AF magnet 1510 may interact with an AF coil 1520. The AF magnet 1510 may electromagnetically interact with the AF coil 1520. The AF magnet 1510 may be disposed at a position corresponding to the AF coil 1520. The AF magnet 1510 can face the AF coil 1520. The AF magnet 1510 can face the AF coil 1520. The AF magnet 1510 may overlap the AF coil 1520 in a direction perpendicular to the optical axis. The AF magnet 1510 can overlap the AF coil 1520 in the x-axis direction. The AF magnet 1510 can overlap the OIS-x magnet 1610 in the x-axis direction.

[0247] The AF magnet 1510 may be C-cut to achieve a greater attractive force with the AF attractive yoke 1910. The AF magnet 1510 may be structured to send magnetic force in the direction of the AF attractive yoke 1910. The AF magnet 1510 may include a first surface facing the AF coil 1520 and a second surface opposite the first surface. In the y-axis direction, the width of the first surface of the AF magnet 1510 (see W1 in FIG. 55) may be smaller than the width of the second surface of the AF magnet 1510 (see W2 in FIG. 55). The AF magnet 1510 may include a shape with chamfered edges.

[0248] The AF magnet 1510 may be a two-pole magnet. The AF magnet 1510 may include a north pole and a south pole. The top surface of the AF magnet 1510 may have a north pole and the bottom surface of the AF magnet 1510 may have a south pole.

[0249] In a modified example, the AF magnet 1510 may be a four-pole magnet. The AF magnet 1510 may include a four-pole magnetized magnet. The AF magnet 1510 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 vertically spaced apart, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0250] The lens driving device 1010 may include an AF coil 1520. The AF driving unit 1500 may include an AF coil 1520. The AF coil 1520 may interact with the AF magnet 1510. The AF coil 1520 may move the AF magnet 1510 in the optical axis direction. The AF coil 1520 may move the AF magnet 1510 in the optical axis direction by interacting with the AF magnet 1510. The AF coil 1520 may face the AF magnet 1510. The AF coil 1520 may face the AF magnet 1510. The AF coil 1520 may be arranged at a position corresponding to the AF magnet 1510. The AF coil 1520 may overlap the AF magnet 1510 in the x-axis direction. The AF coil 1520 may be arranged on the side substrate 1130. The AF coil 1520 may be arranged on the side substrate 1130 at a position corresponding to the AF magnet 1510. The AF coil 1520 may be disposed on the base 1110. The AF coil 1520 may be disposed on a side plate 1122 of the cover 1120. The AF coil 1520 may be disposed between the AF magnet 1510 and the cover 1120. The AF coil 1520 may be disposed on the fixed part 1100. The AF coil 1520 may be disposed on a first side plate of the cover 1120. The AF coil 1520 may be disposed on a first side plate of the base 1110.

[0251] The lens driving device 1010 may include an AF sensor 1530. The AF driving unit 1500 may include the AF sensor 1530. The AF sensor 1530 may be disposed on the side substrate 1130. The AF sensor 1530 may include a Hall IC. The AF sensor 1530 may include a Hall sensor. The AF sensor 1530 may sense the AF magnet 1510. The AF sensor 1530 may sense the magnetic force of the AF magnet 1510. The AF sensor 1530 may sense the movement of the AF magnet 1510. The movement amount or position of the AF magnet 1510 sensed by the AF sensor 1530 may be used for autofocus (AF) feedback.

[0252] The AF sensor 1530 may be disposed within the AF coil 1520. The AF sensor 1530 may overlap the AF coil 1520 in the optical axis direction. The AF sensor 1530 may overlap the AF magnet 1510 in the x-axis direction. In a modified example, the AF sensor 1530 may be disposed outside the AF coil 1520. The AF sensor 1530 may face the AF magnet 1510. The AF sensor 1530 may be disposed at a position corresponding to the AF magnet 1510.

[0253] The AF sensor 1530 may include a drive IC. In this case, the drive IC may be electrically connected to the AF coil 1520. The drive IC may apply a current to the AF coil 1520.

[0254] The lens driving device 1010 may include a capacitor 1540. The capacitor 1540 may be disposed on the side substrate 1130. The capacitor 1540 may be disposed next to the AF sensor 1530. The capacitor 1540 may be disposed within the AF coil 1520. The capacitor 1540 can remove noise related to the data and current transmitted and received by the AF sensor 1530.

[0255] The lens driving device 1010 may include an OIS-x driving unit 1600. The OIS-x driving unit 1600 may move the OIS-x moving unit 1300 in the x-axis direction, which is perpendicular to the optical axis direction and the y-axis direction. The OIS-x driving unit 1600 may move the OIS-x carrier 1310 in the x-axis direction. The OIS-x driving unit 1600 may move the OIS-x carrier 1310 in the x-axis direction using electromagnetic force. The OIS-x driving unit 1600 may include a coil and a magnet. The OIS-x coil 1620 and the OIS-x magnet 1610 may move the OIS-x moving unit 1300 in the x-axis direction, which is perpendicular to the optical axis direction and the y-axis direction.

[0256] When the OIS-x movement unit 1300 is moved by the OIS-x driving unit 1600, the AF movement unit 1200 and the OIS-y movement unit 1400 can move together with the OIS-x movement unit 1300. The AF movement unit 1200 and the OIS-y movement unit 1400 can move together with the OIS-x movement unit 1300 in the x-axis direction.

[0257] The lens driver 1010 may include an OIS-x magnet 1610. The OIS-x driver 1600 may include an OIS-x magnet 1610. The OIS-x magnet 1610 may be disposed in the OIS-x mover 1300. The OIS-x magnet 1610 may be disposed in the OIS-x carrier 1310. The OIS-x magnet 1610 may be disposed in a groove 1315 of the OIS-x carrier 1310. The OIS-x magnet 1610 may be fixed to the OIS-x carrier 1310. The OIS-x magnet 1610 may be coupled to the OIS-x carrier 1310. The OIS-x magnet 1610 may be glued to the OIS-x carrier 1310 with an adhesive. The OIS-x magnet 1610 may be disposed within the cover 1120. The OIS-x magnet 1610 may interact with the OIS-x coil 1620. The OIS-x magnet 1610 can electromagnetically interact with the OIS-x coil 1620. The OIS-x magnet 1610 may be disposed at a position corresponding to the OIS-x coil 1620. The OIS-x magnet 1610 can face the OIS-x coil 1620. The OIS-x magnet 1610 can face the OIS-x coil 1620. The OIS-x magnet 1610 can overlap the OIS-x coil 1620 in the optical axis direction.

[0258] The OIS-x magnet 1610 may be a two-pole magnet. The OIS-x magnet 1610 may include a north pole and a south pole. The inner surface of the OIS-x magnet 1610 may have a north pole and the outer surface of the OIS-x magnet 1610 may have a south pole.

[0259] In a modified example, the OIS-x magnet 1610 may be a four-pole magnet. The OIS-x magnet 1610 may include a four-pole magnetized magnet. The OIS-x magnet 1610 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 horizontally. The first magnet portion and the second magnet portion may be arranged horizontally and spaced apart, with a neutral portion disposed between the first magnet portion and the second magnet portion.

[0260] In the second embodiment of the present invention, the distance between the OIS-x coil 1620 and the OIS-x magnet 1610 may be maintained constant even when the OIS-x magnet 1610 moves due to the interaction between the OIS-x coil 1620 and the OIS-x magnet 1610.

[0261] The lens driving device 1010 may include an OIS-x coil 1620. The OIS-x driving unit 1600 may include an OIS-x coil 1620. The OIS-x coil 1620 may interact with the OIS-x magnet 1610. The OIS-x coil 1620 may move the OIS-x magnet 1610 in the x-axis direction. The OIS-x coil 1620 may move the OIS-x magnet 1610 in the x-axis direction by interacting with the OIS-x magnet 1610. The OIS-x coil 1620 may face the OIS-x magnet 1610. The OIS-x coil 1620 may face the OIS-x magnet 1610. The OIS-x coil 1620 may be disposed at a position corresponding to the OIS-x magnet 1610. The OIS-x coil 1620 may be disposed on the lower substrate 1140. OIS-x coil 1620 may be disposed at a position corresponding to OIS-x magnet 1610 on lower substrate 1140. OIS-x coil 1620 may be disposed on base 1110. OIS-x coil 1620 may be disposed on fixed part 1100.

[0262] The lens driving device 1010 may include an OIS-x sensor 1630. The OIS-x driving unit 1600 may include an OIS-x sensor 1630. The OIS-x sensor 1630 may be disposed on the lower substrate 1140. The OIS-x sensor 1630 may include a Hall IC. The OIS-x sensor 1630 may include a Hall sensor. The OIS-x sensor 1630 may sense the OIS-x magnet 1610. The OIS-x sensor 1630 may sense the magnetic force of the OIS-x magnet 1610. The OIS-x sensor 1630 may sense the movement of the OIS-x magnet 1610. The movement amount or position of the OIS-x magnet 1610 sensed by the OIS-x sensor 1630 may be used as feedback for image stabilization driving (OIS) in the x-axis direction.

[0263] OIS-x sensor 1630 may be disposed within OIS-x coil 1620. OIS-x sensor 1630 may overlap OIS-x coil 1620 in a direction perpendicular to the optical axis. OIS-x sensor 1630 may overlap OIS-x magnet 1610 in the optical axis direction. In a modified example, OIS-x sensor 1630 may be disposed outside OIS-x coil 1620. OIS-x sensor 1630 may face OIS-x magnet 1610. OIS-x sensor 1630 may be disposed at a position corresponding to OIS-x magnet 1610.

[0264] The lens driving device 1010 may include an OIS-y driving unit 1700. The OIS-y driving unit 1700 may move the OIS-y moving unit 1400 in the y-axis direction, which is perpendicular to the optical axis direction and the x-axis direction. The OIS-y driving unit 1700 may move the OIS-y carrier 1410 in the y-axis direction. The OIS-y driving unit 1700 may move the OIS-y carrier 1410 in the y-axis direction using electromagnetic force. The OIS-y driving unit 1700 may include a coil and a magnet. The OIS-y coil 1720 and the OIS-y magnet 1710 may move the OIS-y moving unit 1400 in the y-axis direction, which is perpendicular to the optical axis direction.

[0265] When the OIS-y movement unit 1400 is moved by the OIS-y driving unit 1700, the AF movement unit 1200 can move together with the OIS-y movement unit 1400. The AF movement unit 1200 can move together with the OIS-y movement unit 1400 in the y-axis direction.

[0266] The lens driving device 1010 may include an OIS-y magnet 1710. The OIS-y driving unit 1700 may include an OIS-y magnet 1710. The OIS-y magnet 1710 may be arranged in the OIS-y moving unit 1400. The OIS-y magnet 1710 may be arranged in the OIS-y carrier 1410. The OIS-y magnet 1710 may be arranged in a groove 1413 of the OIS-y carrier 1410. The OIS-y magnet 1710 may be arranged on the outer surface of the OIS-y carrier 1410. The OIS-y magnet 1710 may be fixed to the OIS-y carrier 1410. The OIS-y magnet 1710 may be coupled to the OIS-y carrier 1410. The OIS-y magnet 1710 may be glued to the OIS-y carrier 1410 with an adhesive. The OIS-y magnet 1710 may be arranged within the cover 1120. The OIS-y magnet 1710 can interact with the OIS-y coil 1720. The OIS-y magnet 1710 can electromagnetically interact with the OIS-y coil 1720. The OIS-y magnet 1710 may be disposed at a position corresponding to the OIS-y coil 1720. The OIS-y magnet 1710 can face the OIS-y coil 1720. The OIS-y magnet 1710 can face the OIS-y coil 1720. The OIS-y magnet 1710 can overlap the OIS-y coil 1720 in the optical axis direction.

[0267] The OIS-y magnet 1710 may be a two-pole magnet. The OIS-y magnet 1710 may include a north pole and a south pole. The inner surface of the OIS-y magnet 1710 may have the north pole and the outer surface of the OIS-y magnet 1710 may have the south pole.

[0268] In a modified example, the OIS-y magnet 1710 may be a four-pole magnet. The OIS-y magnet 1710 may include a four-pole magnetized magnet. The OIS-y magnet 1710 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be arranged apart in the horizontal direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0269] The lens driving device 1010 may include an OIS-y coil 1720. The OIS-y driving unit 1700 may include an OIS-y coil 1720. The OIS-y coil 1720 may interact with the OIS-y magnet 1710. The OIS-y coil 1720 may move the OIS-y magnet 1710 in the y-axis direction. The OIS-y coil 1720 may move the OIS-y magnet 1710 in the y-axis direction by interacting with the OIS-y magnet 1710. The OIS-y coil 1720 may face the OIS-y magnet 1710. The OIS-y coil 1720 may face the OIS-y magnet 1710. The OIS-y coil 1720 may be disposed at a position corresponding to the OIS-y magnet 1710. The OIS-y coil 1720 may be disposed on the lower substrate 1140. The OIS-y coil 1720 may be disposed on the lower substrate 1140 at a position corresponding to the OIS-y magnet 1710. The OIS-y coil 1720 may be disposed on the base 1110. The OIS-y coil 1720 may be disposed on the fixed part 1100.

[0270] The lens driving device 1010 may include an OIS-y sensor 1730. The OIS-y driving unit 1700 may include an OIS-y sensor 1730. The OIS-y sensor 1730 may be disposed on the lower substrate 1140. The OIS-y sensor 1730 may include a Hall element (Hall IC). The OIS-y sensor 1730 may include a Hall sensor. The OIS-y sensor 1730 may sense the OIS-y magnet 1710. The OIS-y sensor 1730 may sense the magnetic force of the OIS-y magnet 1710. The OIS-y sensor 1730 may sense the movement of the OIS-y magnet 1710. The movement amount or position of the OIS-y magnet 1710 sensed by the OIS-y sensor 1730 may be used for feedback of the image stabilization drive (OIS) in the y-axis direction.

[0271] The OIS-y sensor 1730 may be disposed within the OIS-y coil 1720. The OIS-y sensor 1730 may overlap the OIS-y coil 1720 in a direction perpendicular to the optical axis. The OIS-y sensor 1730 may overlap the OIS-y magnet 1710 in the optical axis direction. In a variant, the OIS-y sensor 1730 may be disposed outside the OIS-y coil 1720. The OIS-y sensor 1730 may face the OIS-y magnet 1710. The OIS-y sensor 1730 may be disposed at a position corresponding to the OIS-y magnet 1710.

[0272] 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 may guide the movement of the moving part relative to the fixed part 1100 in a specific direction.

[0273] The lens driver 1010 may include a support member. The support member may include a ball.

[0274] The lens driving device 1010 may include an AF guide ball 1810. The AF guide ball 1810 may guide the movement of the AF movement unit 1200 in the optical axis direction. The AF guide ball 1810 may guide the movement of the AF carrier 1210 in the optical axis direction. The AF guide ball 1810 may guide the movement of the AF carrier 1210 relative to the OIS-y carrier 1410 in the optical axis direction. The AF guide ball 1810 may be disposed between the AF movement unit 1200 and the OIS-y movement unit 1400. The AF movement unit 1200 and the OIS-y movement unit 1400 may include grooves 1211, 1411 extending in the optical axis direction. The AF guide ball 1810 may be disposed between the groove 1211 of the AF movement unit 1200 and the groove 1411 of the OIS-y movement unit 1400. The AF guide ball 1810 may be disposed between the OIS-y carrier 1410 and the AF carrier 1210. The AF guide ball 1810 may be disposed between the OIS-y carrier 1410 and the AF carrier 1210 in the x-axis direction. The AF guide ball 1810 may be disposed between the inner surface of the OIS-y carrier 1410 and the outer surface of the AF carrier 1210. When viewed from the outside of the AF carrier 1210, the AF guide ball 1810 may overlap the AF magnet 1510 in the horizontal direction.

[0275] The AF guide ball 1810 may be disposed between the groove 1411 of the OIS-y movement unit 1400 and the groove 1211 of the AF movement unit 1200. At least one of the groove 1411 of the OIS-y movement unit 1400 and the groove 1211 of the AF movement unit 1200 can extend longer in the optical axis direction than the diameter of the AF guide ball 1810.

[0276] The AF guide balls 1810 may be disposed in grooves 1411 of the OIS-y carrier 1410. The AF guide balls 1810 may be disposed in grooves 1211 of the AF carrier 1210. The AF guide balls 1810 may include a 1-1 ball that contacts the OIS-y carrier 1410 and the AF carrier 1210 at four points, and a 1-2 ball that contacts the OIS-y carrier 1410 and the AF carrier 1210 at three points. The AF guide balls 1810 may be spherical. The AF guide balls 1810 may be made of metal. Grease may be applied to the surfaces of the AF guide balls 1810.

[0277] The AF guide ball 1810 may include a plurality of balls. The AF guide ball 1810 may include four balls. Two AF guide balls 1810 may be disposed on one side of the AF magnet 1510, and the remaining two AF guide balls 1810 may be disposed on the other side of the AF magnet 1510. The AF guide ball 1810 may include a plurality of unit balls. The AF guide ball 1810 may include a ball portion including a plurality of unit balls.

[0278] The lens driving device 1010 may include an OIS-x guide ball 1820. The OIS-x guide ball 1820 can guide the movement of the OIS-x movement unit 1300 in the x-axis direction. The OIS-x guide ball 1820 can guide the movement of the OIS-x carrier 1310 in the x-axis direction. The OIS-x guide ball 1820 can guide the movement of the OIS-x carrier 1310 relative to the base 1110 in the x-axis direction. The OIS-x guide ball 1820 may be disposed between the OIS-x movement unit 1300 and the fixed unit 1100. The OIS-x movement unit 1300 and the fixed unit 1100 may include grooves 1111 and 1312 extending in the x-axis direction. The OIS-x guide ball 1820 may be disposed between the groove 1312 of the OIS-x movement unit 1300 and the groove 1111 of the fixed unit 1100. OIS-x guide ball 1820 may be disposed between base 1110 and OIS-x carrier 1310. OIS-x guide ball 1820 may be disposed between base 1110 and OIS-x carrier 1310 in the optical axis direction.

[0279] The OIS-x guide ball 1820 may be disposed between the groove 1111 of the base 1110 and the groove 1312 of the OIS-x movement section 1300. At least one of the groove 1111 of the base 1110 and the groove 1312 of the OIS-x movement section 1300 may extend longer in the x-axis direction than the diameter of the OIS-x guide ball 1820.

[0280] The OIS-x guide ball 1820 may be disposed in the groove 1111 of the base 1110. The OIS-x guide ball 1820 may be disposed in the groove 1312 of the OIS-x carrier 1310. The OIS-x guide ball 1820 may include a first ball 1-1 that contacts the base 1110 and the OIS-x carrier 1310 at four points and a first ball 1-2 that contacts the base 1110 and the OIS-x carrier 1310 at three points. The OIS-x guide ball 1820 may be spherical. The OIS-x guide ball 1820 may be made of metal. Grease may be applied to the surface of the OIS-x guide ball 1820.

[0281] The OIS-x guide ball 1820 may include a plurality of balls. The OIS-x guide ball 1820 may include four balls. The four balls may be arranged in four corner areas of the upper surface of the base 1110. The OIS-x guide ball 1820 may include a plurality of unit balls. The OIS-x guide ball 1820 may include a ball portion including a plurality of unit balls.

[0282] The lens driving device 1010 may include an OIS-y guide ball 1830. The OIS-y guide ball 1830 may guide the movement of the OIS-y movement unit 1400 in the y-axis direction. The OIS-y guide ball 1830 may guide the movement of the OIS-y carrier 1410 in the y-axis direction. The OIS-y guide ball 1830 may guide the movement of the OIS-y carrier 1410 relative to the OIS-x carrier 1310 in the y-axis direction. The OIS-y guide ball 1830 may be disposed between the OIS-y movement unit 1400 and the OIS-x carrier 1310. The OIS-y guide ball 1830 may be disposed between the OIS-y movement unit 1400 and the OIS-x carrier 1310 in the optical axis direction. The OIS-y movement unit 1400 and the OIS-x movement unit 1300 may include grooves 1311, 1412 extending in the y-axis direction. The OIS-y guide ball 1830 may be arranged between the groove 1412 of the OIS-y mover 1400 and the groove 1311 of the OIS-x mover 1300. The OIS-y guide ball 1830 may be arranged between the OIS-x carrier 1310 and the OIS-y carrier 1410. The OIS-y guide ball 1830 may be arranged between the OIS-x carrier 1310 and the OIS-y carrier 1410 in the optical axis direction. The OIS-y guide ball 1830 may be arranged in the groove 1311 of the OIS-x carrier 1310. The OIS-y guide ball 1830 may be arranged between the upper surface of the OIS-x carrier 1310 and the lower surface of the OIS-y carrier 1410.

[0283] The OIS-y guide ball 1830 may be disposed between the groove 1311 of the OIS-x movement unit 1300 and the groove 1412 of the OIS-y movement unit 1400. At least one of the groove 1311 of the OIS-x movement unit 1300 and the groove 1412 of the OIS-y movement unit 1400 may extend in the y-axis direction longer than the diameter of the OIS-y guide ball 1830.

[0284] The OIS-y guide ball 1830 may be disposed in the groove 1311 of the OIS-x carrier 1310. The OIS-y guide ball 1830 may be disposed in the groove 1412 of the OIS-y carrier 1410. The OIS-y guide ball 1830 may include a first-first ball that contacts the OIS-x carrier 1310 and the OIS-y carrier 1410 at four points, and a first-second ball that contacts the OIS-x carrier 1310 and the OIS-y carrier 1410 at three points. The OIS-y guide ball 1830 may be spherical. The OIS-y guide ball 1830 may be made of metal. Grease may be applied to the surface of the OIS-y guide ball 1830.

[0285] The OIS-y guide ball 1830 may include a plurality of balls. The OIS-y guide ball 1830 may include four balls. The four balls may be arranged in four corner areas of the upper surface of the OIS-x carrier 1310. The OIS-y guide ball 1830 may include a plurality of unit balls. The OIS-y guide ball 1830 may include a ball portion including a plurality of unit balls.

[0286] The lens driving device 1010 may include a ball pressing member. The ball pressing member may include a yoke. The yoke may be an "attractive yoke." The yoke may be an "attractive member." The yoke may be made of metal. An attractive force may be generated between the yoke and the magnets 1510, 1610, and 1710. The attractive force between the yoke and the magnets 1510, 1610, and 1710 may pressurize the balls 1810, 1820, and 1830.

[0287] The lens driving device 1010 may include a magnetic member. The magnetic member may include a yoke.

[0288] The yoke can include multiple yokes. The yoke can include three yokes. The yoke can include an AF attraction yoke 1910, an OIS-x attraction yoke 1920, and an OIS-y attraction yoke 1930. The AF attraction yoke 1910, the OIS-x attraction yoke 1920, and the OIS-y attraction yoke 1930 can be isolated from one another.

[0289] The lens driving device 1010 may include an AF attractive force yoke 1910. The AF attractive force yoke 1910 may be disposed in the OIS-y moving unit 1400. The AF attractive force yoke 1910 may be disposed in the OIS-y carrier 1410. The AF attractive force yoke 1910 may be coupled to the OIS-y carrier 1410. The AF attractive force yoke 1910 may be fixed to the OIS-y carrier 1410. The AF attractive force yoke 1910 may be adhered to the OIS-y carrier 1410 with an adhesive. The AF attractive force yoke 1910 may be disposed on the outer surface of the OIS-y carrier 1410. The AF attractive force yoke 1910 may be disposed at a position corresponding to the AF magnet 1510. An attractive force may act between the AF attractive force yoke 1910 and the AF magnet 1510. An attractive force may be generated between the AF attractive force yoke 1910 and the AF magnet 1510. The AF guide ball 1810 may be pressed by the attractive force between the AF attractive yoke 1910 and the AF magnet 1510. The AF guide ball 1810 may be pressed between the AF carrier 1210 and the OIS-y carrier 1410 by the attractive force between the AF attractive yoke 1910 and the AF magnet 1510. The AF guide ball 1810 may be pressed between the AF mover 1200 and the OIS-y mover 1400 by the attractive force between the AF magnet 1510 and the AF attractive yoke 1910. The AF guide ball 1810 can be in close contact between the AF mover 1200 and the OIS-y mover 1400.

[0290] When viewed from the outside, the AF attraction yoke 1910 and the AF magnet 1510 may be visible. The AF attraction yoke 1910 and the AF magnet 1510 may be arranged on outer surfaces facing the same direction. When viewed from the outside, the AF magnet 1510 may be visible between the AF attraction yokes 1910.

[0291] The AF attractive force yoke 1910 may include a plurality of yokes. The AF attractive force yoke 1910 may include a first unit yoke 1911 and a second unit yoke 1912. The AF attractive force yoke 1910 may include the first unit yoke 1911 and the second unit yoke 1912 that are separated from each other. The first unit yoke 1911 and the second unit yoke 1912 may be disposed on both sides of the AF magnet 1510. The first unit yoke 1911 may be disposed on one side of the AF magnet 1510, and the second unit yoke 1912 may be disposed on the other side of the AF magnet 1510. The first unit yoke 1911 and the second unit yoke 1912 may be disposed to extend in the optical axis direction.

[0292] The AF magnet 1510 may overlap the AF attractive yoke 1910 in the y-axis direction. The AF magnet 1510 may be disposed between the first unit yoke 1911 and the second unit yoke 1912 in the y-axis direction. The AF magnet 1510 may be disposed between the first unit yoke 1911 and the second unit yoke 1912. When viewed from the outside, the AF magnet 1510 may be disposed between the first unit yoke 1911 and the second unit yoke 1912. The AF magnet 1510 does not have to overlap with the AF attractive yoke 1910 in the x-axis direction. However, in a modified example, the AF magnet 1510 may overlap with the AF attractive yoke 1910 in the x-axis direction. A space for disposing the AF attractive yoke 1910 may be provided by omitting the corner areas of the AF magnet 1510. In a modified example, the AF attractive yoke 1910 may be disposed outward of the AF magnet 1510 so as not to overlap with the AF magnet 1510 in the y-axis direction.

[0293] The upper end of the AF magnet 1510 may be disposed higher than the upper end of the AF attractive force yoke 1910. When the AF movement unit 1200 has moved to its maximum extent downward in the optical axis direction, the upper end of the AF magnet 1510 may be disposed at the same height as the upper end of the AF attractive force yoke 1910. In a modified example, when the AF movement unit 1200 has moved to its maximum extent downward in the optical axis direction, the upper end of the AF magnet 1510 may be disposed higher than the upper end of the AF attractive force yoke 1910. When the AF movement unit 1200 has moved to its maximum extent downward in the optical axis direction, the upper end of the AF magnet 1510 may be disposed lower than the upper end of the AF attractive force yoke 1910.

[0294] The lower end of the AF magnet 1510 may be arranged lower than the lower end of the AF attractive force yoke 1910. When the AF movement unit 1200 has moved to the maximum extent upward in the optical axis direction, the lower end of the AF magnet 1510 may be arranged at the same height as the lower end of the AF attractive force yoke 1910. In a modified example, when the AF movement unit 1200 has moved to the maximum extent upward in the optical axis direction, the lower end of the AF magnet 1510 may be arranged higher than the lower end of the AF attractive force yoke 1910. When the AF movement unit 1200 has moved to the maximum extent upward in the optical axis direction, the lower end of the AF magnet 1510 may be arranged lower than the lower end of the AF attractive force yoke 1910.

[0295] In the second embodiment of the present invention, the AF mover 1200 may include a first surface. The OIS-y mover 1400 may include a first surface facing the same direction as the first surface. The AF magnet 1510 may be disposed on the first surface of the AF mover 1200. The AF attractive yoke 1910 may be disposed on the first surface of the OIS-y mover 1400. In this case, the first surface of the AF mover 1200 may be an outer surface. The first surface of the OIS-y mover 1400 may be an outer surface. The OIS-y mover 1400 may include a groove formed in a concave shape on the first surface of the OIS-y mover 1400. The AF attractive yoke 1910 may be disposed in the groove 1414 of the OIS-y mover 1400.

[0296] In the second embodiment of the present invention, the OIS-x drive may not be affected because the AF attractive yoke 1910 is disposed on the OIS-y carrier 1410. If the AF attractive yoke 1910 were disposed on the side substrate 1130, i.e., the fixed part 1100, as in the comparative example, the attractive force between the AF attractive yoke 1910 and the AF magnet 1510 may interfere with the OIS-x drive.

[0297] The lens driving device 1010 may include an OIS-x gravitational force yoke 1920. The OIS-x gravitational force yoke 1920 may be disposed on the fixed part 1100. The OIS-x gravitational force yoke 1920 may be disposed on the base 1110. The OIS-x gravitational force yoke 1920 can be coupled to the base 1110. The OIS-x gravitational force yoke 1920 may be fixed to the base 1110. The OIS-x gravitational force yoke 1920 may be adhesively bonded to the base 1110. The OIS-x gravitational force yoke 1920 may be disposed on the lower substrate 1140. The OIS-x gravitational force yoke 1920 can be coupled to the lower substrate 1140. The OIS-x gravitational force yoke 1920 may be fixed to the lower substrate 1140. The OIS-x gravitational force yoke 1920 may be adhesively bonded to the lower substrate 1140. The OIS-x gravity yoke 1920 may be disposed between the base 1110 and the lower substrate 1140. The OIS-x gravity yoke 1920 may be disposed in a groove in the base 1110.

[0298] The OIS-x attractive force yoke 1920 may be disposed at a position corresponding to the OIS-x magnet 1610. An attractive force may be exerted between the OIS-x attractive force yoke 1920 and the OIS-x magnet 1610. An attractive force may be generated between the OIS-x attractive force yoke 1920 and the OIS-x magnet 1610. The attractive force between the OIS-x attractive force yoke 1920 and the OIS-x magnet 1610 may pressurize the OIS-x guide ball 1820. The attractive force between the OIS-x attractive force yoke 1920 and the OIS-x magnet 1610 may pressurize the OIS-x guide ball 1820 between the OIS-x carrier 1310 and the base 1110. The OIS-x guide ball 1820 may be in close contact with the OIS-x carrier 1310 and the base 1110.

[0299] The lens driving device 1010 may include an OIS-y gravitational force yoke 1930. The OIS-y gravitational force yoke 1930 may be disposed on the fixed portion 1100. The OIS-y gravitational force yoke 1930 may be disposed on the base 1110. The OIS-y gravitational force yoke 1930 can be coupled to the base 1110. The OIS-y gravitational force yoke 1930 may be fixed to the base 1110. The OIS-y gravitational force yoke 1930 may be adhesively bonded to the base 1110. The OIS-y gravitational force yoke 1930 may be disposed on the lower substrate 1140. The OIS-y gravitational force yoke 1930 can be coupled to the lower substrate 1140. The OIS-y gravitational force yoke 1930 may be fixed to the lower substrate 1140. The OIS-y gravitational force yoke 1930 may be adhesively bonded to the lower substrate 1140. The OIS-y gravity yoke 1930 may be disposed between the base 1110 and the lower substrate 1140. The OIS-y gravity yoke 1930 may be disposed in a groove in the base 1110.

[0300] The OIS-y attractive yoke 1930 may be disposed at a position corresponding to the OIS-y magnet 1710. An attractive force may act between the OIS-y attractive yoke 1930 and the OIS-y magnet 1710. An attractive force may be generated between the OIS-y attractive yoke 1930 and the OIS-y magnet 1710. The attractive force between the OIS-y attractive yoke 1930 and the OIS-y magnet 1710 may pressurize the OIS-y guide ball 1830. The attractive force between the OIS-y attractive yoke 1930 and the OIS-y magnet 1710 may pressurize the OIS-y guide ball 1830 between the OIS-y carrier 1410 and the OIS-x carrier 1310. The OIS-y guide ball 1830 may be in close contact between the OIS-y carrier 1410 and the OIS-x carrier 1310.

[0301] The lens driving device 1010 may include a first additional pressure and attraction yoke 1940. The first additional pressure and attraction yoke 1940 may exert an attractive force on the OIS-x magnet 1610. The first additional pressure and attraction yoke 1940 may be disposed on the OIS-y movement unit 1400. This may cause the OIS-y movement unit 1400 to be pressed downward. The first additional pressure and attraction yoke 1940 may be disposed on the opposite side of the OIS-x attraction yoke 1920. This may cause both sides of the OIS-y movement unit 1400 to be pressed downward.

[0302] The lens driving device 1010 may include a second additional pressure and attraction yoke 1950. The second additional pressure and attraction yoke 1950 may exert an attractive force on an attractive magnet 1955. The second additional pressure and attraction yoke 1950 may be disposed on the fixed unit 1100. The second additional pressure and attraction yoke 1950 may be disposed on the base 1110. The second additional pressure and attraction yoke 1950 may be disposed on the lower substrate 1140. The second additional pressure and attraction yoke 1950 may be disposed between the lower substrate 1140 and the base 1110. The second additional pressure and attraction yoke 1950 may attract the attractive magnet 1955 downward. As a result, the OIS-y moving unit 1400 in which the attractive magnet 1955 is disposed may be pressed downward.

[0303] The lens driving device 1010 may include an attractive magnet 1955. The attractive magnet 1955 may be disposed in the OIS-y movement unit 1400. The attractive magnet 1955 may be disposed in the protrusion 1415 of the OIS-y movement unit 1400. The attractive magnet 1955 may overlap with the second additional pressure and attraction yoke 1950 in the optical axis direction. The attractive magnet 1955 may be disposed at a position corresponding to the second additional pressure and attraction yoke 1950. The attractive magnet 1955 may be formed to be smaller in size than the driving magnets 1510, 1610, and 1710.

[0304] A lens driving device according to a modified example will be described below with reference to the drawings.

[0305] FIG. 43b is an exploded perspective view of the lens driving device according to the first modified example.

[0306] In the lens driving device according to the first modification, the second additional pressure-applying attractive force yoke 1950 and the attractive force magnet 1955 may be omitted.

[0307] FIG. 43c is an exploded perspective view of a lens driving device according to a second modified example.

[0308] In the lens driving device according to the second modification, the first additional pressure and attraction yoke 1940 may be omitted.

[0309] FIG. 43d is an exploded perspective view of a lens driving device according to a third modified example.

[0310] In the lens driving device according to the third modification, the first additional pressure and attraction yoke 1940, the second additional pressure and attraction yoke 1950, and the attraction magnet 1955 may be omitted.

[0311] 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.

[0312] 57 to 59 are diagrams illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention. Fig. 57 is a cross-sectional view illustrating the state of the AF moving unit in the initial state when no current is applied to the AF coil. Fig. 58 is a cross-sectional view illustrating the state when a forward current is applied to the AF coil and the AF moving unit has moved upward in the optical axis direction. Fig. 59 is a cross-sectional view illustrating the state when a reverse current is applied to the AF coil and the AF moving unit has moved downward in the optical axis direction.

[0313] The moving part may be disposed at a position separated from both the upper plate 1121 of the cover 1120 and the base 1110 in the initial position where no current is applied to the AF coil 1520. In this case, the moving part may be the AF moving part 1200.

[0314] When a forward current is applied to the AF coil 1520, the AF magnet 1510 can move upward in the optical axis direction due to electromagnetic interaction between the AF coil 1520 and the AF magnet 1510 (see A in FIG. 58). At this time, the AF carrier 1210 can move upward in the optical axis direction together with the AF magnet 1510. Furthermore, the lens can move upward in the optical axis direction together with the AF carrier 1210. Accordingly, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0315] When a reverse current is applied to the AF coil 1520, the AF magnet 1510 can move downward in the optical axis direction due to electromagnetic interaction between the AF coil 1520 and the AF magnet 1510 (see B in FIG. 59). At this time, the AF carrier 1210 can move downward in the optical axis direction together with the AF magnet 1510. Furthermore, the lens can move downward in the optical axis direction together with the AF carrier 1210. Accordingly, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0316] Meanwhile, during the movement of the AF magnet 1510, the AF sensor 1530 can sense the strength of the magnetic field of the AF magnet 1510 and detect the movement amount and position of the AF magnet 1510. The movement amount and position of the AF magnet 1510 sensed by the AF sensor 1530 may be used for autofocus feedback control.

[0317] 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.

[0318] 60 to 62 are diagrams illustrating the image stabilization drive of a lens driving device according to a second embodiment of the present invention. Fig. 60 is a cross-sectional view illustrating the state of the moving unit in the initial state when no current is applied to the OIS-x coil and the OIS-y coil. Fig. 61 is a cross-sectional view illustrating the state when a current is applied to the OIS-x coil, and the OIS-x moving unit, the OIS-y moving unit, and the AF moving unit move in the x-axis direction perpendicular to the optical axis. Fig. 62 is a cross-sectional view illustrating the state when a current is applied to the OIS-y coil, and the OIS-y moving unit and the AF moving unit move in the y-axis direction perpendicular to the optical axis.

[0319] 60, the moving unit may be placed in an initial position where no current is applied to the OIS-x coil 1620 and the OIS-y coil 1720. In this case, the moving unit may be an OIS-x moving unit 1300 and an OIS-y moving unit 1400. The moving unit may also include an AF moving unit 1200, an OIS-x moving unit 1300, and an OIS-y moving unit 1400.

[0320] When a current is applied to the OIS-x coil 1620, electromagnetic interaction between the OIS-x coil 1620 and the OIS-x magnet 1610 causes the OIS-x magnet 1610 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 61 ). At this time, the OIS-x carrier 1310 moves in the x-axis direction together with the OIS-x magnet 1610. Furthermore, the OIS-y carrier 1410, AF carrier 1210, and lens move in the x-axis direction together with the OIS-x carrier 1310. More specifically, when a positive current is applied to the OIS-x coil 1620, the OIS-x magnet 1610, OIS-x carrier 1310, OIS-y carrier 1410, AF carrier 1210, and lens move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 1620, the OIS-x magnet 1610, the OIS-x carrier 1310, the OIS-y carrier 1410, the AF carrier 1210, and the lens can move in the other direction on the x-axis.

[0321] When a current is applied to the OIS-y coil 1720, electromagnetic interaction between the OIS-y coil 1720 and the OIS-y magnet 1710 causes the OIS-y magnet 1710 to move in the y-axis direction, which is perpendicular to the optical axis (see B in FIG. 62 ). At this time, the OIS-y carrier 1410 moves in the y-axis direction together with the OIS-y magnet 1710. Furthermore, the AF carrier 1210 and the lens move in the y-axis direction together with the OIS-y carrier 1410. More specifically, when a forward current is applied to the OIS-y coil 1720, the OIS-y magnet 1710, the OIS-y carrier 1410, the AF carrier 1210, and the lens move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 1720, the OIS-y magnet 1710, the OIS-y carrier 1410, the AF carrier 1210, and the lens move in the other direction on the y-axis.

[0322] Meanwhile, the OIS-x sensor 1630 senses the strength of the magnetic field of the OIS-x magnet 1610 and can sense the movement amount and position of the OIS-x magnet 1610. The movement amount and position of the OIS-x magnet 1610 sensed by the OIS-x sensor 1630 may be used for image stabilization feedback control in the x-axis direction. The OIS-y sensor 1730 senses the strength of the magnetic field of the OIS-y magnet 1710 and can sense the movement amount and position of the OIS-y magnet 1710. The movement amount and position of the OIS-y magnet 1710 sensed by the OIS-y sensor 1730 may be used for image stabilization feedback control in the y-axis direction.

[0323] A camera device according to a second embodiment of the present invention will now be described with reference to the drawings.

[0324] FIG. 63 is an exploded perspective view of a camera device according to a second embodiment of the present invention.

[0325] The camera device 1010A may include a camera module.

[0326] 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 AF carrier 1210 of the lens driving device 1010. The lens module 1020 may be coupled to the AF carrier 1210 by screws and / or adhesive. The lens module 1020 may move integrally with the AF carrier 1210.

[0327] The camera device 1010A may include a filter 1030. The filter 1030 may help block light of a specific frequency band 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 may block light in the infrared range from entering the image sensor 1060.

[0328] 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 be incident on 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.

[0329] 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. to convert an image formed on the image sensor 1060 into an electrical signal and transmit the signal to an external device.

[0330] 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. In one example, the image sensor 1060 may be coupled to the printed circuit board 1050 using surface mounting technology (SMT). In 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.

[0331] 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.

[0332] 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 1520, 1620, and 1720 and the sensors 1530, 1630, and 1730 of the lens driving device 1010. The control unit 1080 may individually control the direction, strength, and amplitude of the current supplied to the coil 1330. The control unit 1080 may control the lens driving device 1010 to perform an autofocus function and / or an image stabilization function. In addition, the control unit 1080 may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device 1010.

[0333] 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.

[0334] An optical apparatus according to a second embodiment of the present invention will now be described with reference to the drawings.

[0335] FIG. 64 is a perspective view of an optical apparatus according to a second embodiment of the present invention, and FIG. 65 is a perspective view of an optical apparatus according to a modified example.

[0336] 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 1001 may also include any device for taking images or photographs.

[0337] 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 on the main body 1020. The camera device 1010A may photograph an object. The optical device 1001 may include a display. The display may be disposed on 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. 64, the camera device 1010A may have a triple camera disposed vertically. As shown in FIG. 65, the camera device 1010A-1 may have a triple camera disposed horizontally.

[0338] 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. Also, 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.

[0339] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and are not limiting.

Claims

1. Coil section; a housing disposed on the coil portion; a first carrier movable in an x-axis direction perpendicular to the optical axis direction; a second carrier movable in a y-axis direction perpendicular to the optical axis direction; a bobbin disposed within the second carrier; a first magnet disposed on the bobbin; a second magnet disposed on the first carrier; a third magnet disposed on the second carrier; a first ball disposed between the housing and the first carrier; and a second ball disposed between the first carrier and the second carrier; The coil section includes a second coil arranged to face the second magnet in the optical axis direction, and a third coil arranged to face the third magnet in the optical axis direction.

2. The lens driving device according to claim 1 , wherein the third magnet is disposed between the second carrier and the third coil and is disposed lower than the second ball.

3. The lens driving device according to claim 1 , wherein the housing does not move.

4. The lens driving device according to claim 1 , further comprising a first coil disposed in the housing and facing the first magnet.

5. The lens driving device according to claim 1 , further comprising a third ball disposed between the bobbin and the second carrier.

6. the second carrier includes a protrusion that protrudes in a direction toward the third coil, The lens driving device according to claim 1 , wherein the third magnet is disposed on the protrusion.

7. The lens driving device according to claim 6 , wherein the first carrier includes a groove into which the protrusion is inserted.

8. The lens driving device according to claim 1 , wherein the second magnet and the third magnet overlap with an imaginary plane perpendicular to the optical axis direction.

9. The lens driving device according to claim 8 , wherein the imaginary plane and the first magnet do not overlap.

10. 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 a direction perpendicular to the optical axis; and a second driving unit that moves the second moving unit in the optical axis direction; A lens driving device, wherein the second driving unit includes a first magnet arranged on the second moving unit, and a first coil arranged to face the first magnet and arranged on the fixed unit.

Images