Lens drive device, camera device and optical equipment

Abstract

A first embodiment of the present invention relates to a lens driving device including a base; a housing disposed on the base; a bobbin disposed within the housing; a first ball disposed between a side surface of the housing and the base; a second ball disposed between the housing and an upper side of the bobbin; a first elastic member coupled to an upper portion of the bobbin; a second elastic member coupled to a lower side of the housing; and a wire connecting the first elastic member and the second elastic member.

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] The autofocus and image stabilization functions can be performed through the electromagnetic interaction between the magnet and the coil.

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

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

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

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

[0009] However, in this case, there is a problem in that a centering force exists in the direction of the optical axis.

[0010] Furthermore, there is room for the moving part to tilt due to the contact point of the ball.

[0011] [Patent Document 1] Korean Patent Publication No. 10-2015-0118005 Summary of the Invention [Problem to be solved by the invention]

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

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

[0014] A second embodiment of the present invention provides a lens driving device that applies pressure to a ball via an elastic member.

[0015] Furthermore, a second embodiment of the present invention provides a lens driving device that presses the ball via an elastic member so that a centering force in the optical axis direction that is generated when the ball is pressed via a yoke and a magnet is not applied.

[0016] Furthermore, the second embodiment of the present invention provides a lens driving device in which ball guide structures are arranged diagonally to prevent rotation and tilt of the moving part. [Means for solving the problem]

[0017] A lens driving device according to a first embodiment of the present invention may include a base; a housing disposed on the base; a bobbin disposed within the housing; a first ball disposed between a side of the housing and the base; a second ball disposed between the housing and an upper side of the bobbin; a first elastic member coupled to an upper portion of the bobbin; a second elastic member coupled to a lower side of the housing; and a wire connecting the first elastic member and the second elastic member.

[0018] The base may include a first guide that guides the first ball to move.

[0019] The side surface of the housing may include a second guide that guides the first ball to move.

[0020] The first guide and the second guide may include a groove.

[0021] The housing may include a first housing including an upper plate having a metal member, and a second housing disposed on the first housing and having a protrusion for guiding the second ball.

[0022] A lens driving device according to a first embodiment of the present invention includes a fixed section; a first moving section arranged within the fixed section; a second moving section arranged within the first moving section; a first driving section that moves the first moving section in an optical axis direction; and a second driving section that moves the second moving section in a direction perpendicular to the optical axis direction, wherein the first driving section includes a first driving unit arranged on the first moving section and a second driving unit arranged on the fixed section, and the second driving section includes a third driving unit arranged on the second moving section and a fourth driving unit arranged on the first moving section.

[0023] The fourth drive unit may include a coil.

[0024] The coil can move together with the first moving part.

[0025] The first drive unit may include a first magnet, and the second drive unit may include a first coil.

[0026] The second driving unit may include a fifth driving unit disposed on the second moving unit and spaced apart from the third driving unit, and a sixth driving unit disposed on the first moving unit and spaced apart from the fourth driving unit.

[0027] When viewed from the above, the first drive unit, the second drive unit, the fifth drive unit and the sixth drive unit may be stacked in one direction.

[0028] The third drive unit and the fourth drive unit may move the second moving part in a first direction perpendicular to the optical axis direction, and the fifth drive unit and the sixth drive unit may move the second moving part in a second direction perpendicular to the optical axis direction and the first direction.

[0029] The coil may include a first substrate disposed on the fixed portion; and a second substrate disposed on the first moving portion, the coil being disposed on the second substrate, and the first substrate may include an outer portion disposed on the fixed portion and a connecting portion extending from the outer portion and connecting to the second substrate.

[0030] A lens driving device according to a first embodiment of the present invention may include a fixed portion; a first movable portion disposed within the fixed portion; a second movable portion disposed within the first movable portion; a first support member disposed between the fixed portion and the first movable portion and guiding the first movable portion to move in the optical axis direction; a second support member disposed between the first movable portion and the second movable portion and guiding the second movable portion to move in a direction perpendicular to the optical axis direction; and a third support member having one side connected to the first movable portion and the other side connected to the second movable portion.

[0031] The first moving part may include a first elastic member, the second moving part may include a second elastic member, and the third support member may be coupled to the first elastic member and the second elastic member.

[0032] The third support member may include a wire.

[0033] The actuator may include a first driving unit that moves the first moving unit and a second driving unit that moves the second moving unit, the first driving unit including a first coil and a first magnet, the second driving unit including a second coil and a second magnet, and the first coil and the second coil being disposed on the first moving unit.

[0034] The first magnet may be disposed on the fixed part, and the second magnet may be disposed on the second moving part.

[0035] 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.

[0036] 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.

[0037] A lens driving device according to a second embodiment of the present invention can include a fixed part; a moving part disposed within the fixed part; a coil and a magnet that move the moving part in the optical axis direction; a ball disposed between the fixed part and the moving part; a plate member that contacts the ball; and an elastic member that presses the plate member toward the ball.

[0038] The plate member is disposed between the ball and the fixed portion, and the elastic member is disposed between the plate member and the fixed portion and is capable of pushing the plate member toward the fixed portion.

[0039] The fixed portion may include a pillar portion and an outer wall portion, and the balls may include a first ball arranged between the moving portion and the pillar portion of the fixed portion, and a second ball arranged between the moving portion and the outer wall portion of the fixed portion.

[0040] The plate member may be disposed between the first ball and the pillar portion of the fixed portion, and the elastic member may be disposed between the plate member and the pillar portion of the fixed portion.

[0041] The first balls may include a plurality of first balls arranged in the optical axis direction, the plurality of first balls including a first uppermost ball arranged highest and a first lowermost ball arranged lowest, and a height of a point at which the elastic member presses the plate member may be located between the first uppermost ball and the first lowermost ball.

[0042] The second balls may include a plurality of second balls arranged in the optical axis direction, and the plurality of second balls may include a second uppermost ball arranged highest and a second lowermost ball arranged lowest.

[0043] The height of the point at which the elastic member presses the plate member may be lower than the height of the lower one of the first uppermost ball and the second uppermost ball.

[0044] The height of the point at which the elastic member presses the plate member may be higher than the height of the ball that is positioned higher among the first lowest ball and the second lowest ball.

[0045] The plurality of first balls may include a ball having a smaller diameter than the first uppermost ball and disposed between the first uppermost ball and the first lowermost ball.

[0046] The elastic member may include a first bending portion, a second bending portion, and a third bending portion disposed between the first bending portion and the second bending portion, and the first bending portion and the second bending portion of the elastic member may be disposed on the fixing portion, and the third bending portion of the elastic member may be disposed on the plate member.

[0047] The fixing part may include a first corner area and a second corner area arranged diagonally to each other with respect to an optical axis, and the ball may be arranged in the first corner area and the second corner area of ​​the fixing part.

[0048] The moving part may include a first groove and a second groove opposite the first groove, the fixed part may include a first groove formed in the pillar part and a second groove formed in the outer wall part to face the first groove, the elastic member may be disposed in the first groove of the fixed part, the first ball may be disposed in the first groove of the moving part, and the second ball may be disposed between the second groove of the fixed part and the second groove of the moving part.

[0049] The plate member may be disposed between the elastic member and the first ball.

[0050] The lens driving device may include a reinforcing member including an inner portion arranged on the opposite side of the first groove of the pillar portion of the fixed portion, an outer portion arranged on the opposite side of the second groove of the outer wall portion of the fixed portion, and a connecting portion connecting the inner portion and the outer portion.

[0051] The lens driving device may include a cover coupled to the moving part and overlapping with the first ball and the second ball in the optical axis direction.

[0052] The lens driving device may include a first substrate disposed on the moving part, the magnet may be disposed on the fixed part, and the coil may be disposed on the first substrate.

[0053] The lens driving device includes a second substrate including an outer portion arranged on the fixed portion, a connecting portion that connects to the first substrate, and a connecting portion that connects the outer portion and the connecting portion, and at least a portion of the connecting portion of the second substrate can move together with the first substrate.

[0054] The lens driving device may include a substrate disposed on the fixed portion, the magnet may be disposed on the moving portion, and the coil may be disposed on the substrate.

[0055] A camera device according to a second embodiment of the present invention may include a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0056] 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]

[0057] According to the first embodiment of the present invention, the coil, which is lighter in weight than the magnet, is disposed in the moving part, thereby reducing the current consumption for performing the autofocus function.

[0058] Furthermore, the guide structure for driving the OIS-x axis and the guide structure for driving the OIS-y axis are integrally formed, so that the height of the lens driving device in the optical axis direction can be minimized.

[0059] Accordingly, the height of the camera device protruding from the smartphone can be minimized.

[0060] A second embodiment of the present invention can replace the present ball pressing structure via the attractive force between the yoke and the magnet.

[0061] This eliminates the centering force in the optical axis direction that occurs when pressure is applied to the ball via the yoke and magnet, i.e., there is no force to return to the centering position, so the current consumed for AF drive is reduced and the accuracy of AF drive can be improved.

[0062] Furthermore, in the second embodiment of the present invention, the ball guide structures are arranged diagonally, making it possible to prevent the moving part from rotating and tilting.

[0063] Furthermore, in the second embodiment of the present invention, the coil, which is lighter in weight than the magnet, is disposed in the moving part, thereby reducing the current consumption for performing the autofocus function.

[0064] Furthermore, in the modified example, it is possible to provide a lens driving device with a simpler configuration and structure than the second embodiment of the present invention, and therefore it is possible to reduce manufacturing costs. [Brief explanation of the drawings]

[0065] [Figure 1] 1 is a conceptual diagram of a lens driving device according to a first embodiment of the present invention.

[0066] [Figure 2] 1 is a perspective view of a lens driving device according to a first embodiment of the present invention.

[0067] [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2.

[0068] [Figure 4] FIG. 3 is a cross-sectional view taken along the line BB in FIG. 2.

[0069] [Figure 5] FIG. 3 is a cross-sectional view taken along CC in FIG. 2.

[0070] [Figure 6] FIG. 3 is a cross-sectional view taken along the line DD in FIG. 2.

[0071] [Figure 7] 1 is a cross-sectional view of a lens driving device according to a first embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above.

[0072] [Figure 8] 1 is an exploded perspective view of a lens driving device according to a first embodiment of the present invention.

[0073] [Figure 9] 9 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention, seen from a different direction than FIG. 8. FIG.

[0074] [Figure 10] FIG. 2 is an exploded perspective view of a holder member and a preload member of the AF carrier according to the first embodiment of the present invention.

[0075] [Figure 11] 11 is an exploded perspective view of a holder member and a preload member of the AF carrier, seen from a direction different from that of FIG. 10. FIG.

[0076] [Figure 12] 10(a) and 10(b) are perspective views of the OIS moving part as seen from different directions.

[0077] [Figure 13]1 is a perspective view of a lens driving device according to a first embodiment of the present invention, with a cover omitted.

[0078] [Figure 14] 14 is a perspective view of the lens driving device with the cover omitted, seen from a different direction than in FIG. 13. FIG.

[0079] [Figure 15] 1 is a perspective view illustrating a fixing portion and related configuration of a lens driving device according to a first embodiment of the present invention.

[0080] [Figure 16] 1 is a perspective view illustrating a moving unit and related configuration of a lens driving device according to a first embodiment of the present invention.

[0081] [Figure 17] 17 is a bottom perspective view of the moving unit and related components of the lens driving device, seen from a different direction from that of FIG. 16.

[0082] [Figure 18] 1 is a perspective view illustrating an AF moving unit and related configuration of a lens driving device according to a first embodiment of the present invention.

[0083] [Figure 19] 19 is a perspective view illustrating an AF moving unit and related configuration of the lens driving device, seen from a direction different from that of FIG. 18.

[0084] [Figure 20] 1 is a bottom view illustrating an AF moving unit and related configuration of a lens driving device according to a first embodiment of the present invention.

[0085] [Figure 21] 1 is a perspective view illustrating an OIS moving unit and related configuration of a lens driving device according to a first embodiment of the present invention.

[0086] [Figure 22] 1 is a plan view illustrating an OIS moving unit and related configuration of a lens driving device according to a first embodiment of the present invention.

[0087] [Figure 23] 1 is a perspective view illustrating a substrate and a coil of a lens driving device according to a first embodiment of the present invention.

[0088] [Figure 24] FIG. 24 is a perspective view illustrating a substrate and coils of the lens driving device, seen from a direction different from that of FIG. 23.

[0089] [Figure 25] 2 is a perspective view illustrating a coil and a magnet of the lens driving device according to the first embodiment of the present invention. FIG.

[0090] [Figure 26] 1 is a side view illustrating a coil and a substrate of a lens driving device according to a first embodiment of the present invention.

[0091] [Figure 27] 1 is a side view illustrating a state of an OIS moving part pressurized via a preload member of a lens driving device according to a first embodiment of the present invention.

[0092] [Figure 28] 1 is a perspective view illustrating an upper elastic member, a lower elastic member, and a wire of a lens driving device according to a first embodiment of the present invention.

[0093] [Figure 29] 29 is a diagram illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention, and is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil. [Figure 30] 30 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, as a result of which the lens driving device according to the first embodiment of the present invention performs autofocus driving. [Figure 31]31 is a cross-sectional view illustrating the state in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction, illustrating the autofocus driving of the lens driving device according to the first embodiment of the present invention.

[0094] [Figure 32] 32 is a diagram illustrating the image stabilization drive of the lens driving device according to the first embodiment of the present invention, and is a cross-sectional view illustrating the state of the OIS moving part in the initial state when no current is applied to the OIS-x coil and the OIS-y coil. [Figure 33] 33 is a diagram illustrating the image stabilization drive 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 current is applied to the OIS-x coil and the OIS moving part moves in the x-axis direction perpendicular to the optical axis. [Figure 34] 34 is a diagram illustrating the image stabilization drive of the lens driving device according to the first embodiment of the present invention. Fig. 34 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the OIS moving part moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0095] [Figure 35] 1 is an exploded perspective view of a camera device according to a first embodiment of the present invention.

[0096] [Figure 36] 1 is a perspective view of an optical apparatus according to a first embodiment of the present invention.

[0097] [Figure 37] FIG. 10 is a perspective view of an optical device according to a modified example.

[0098] [Figure 38] FIG. 10 is a perspective view of a lens driving device according to a second embodiment of the present invention.

[0099] [Figure 39] FIG. 39 is a cross-sectional view taken along line AA in FIG. 38.

[0100] [Figure 40] FIG. 39 is a cross-sectional view taken along the line BB in FIG. 38.

[0101] [Figure 41] FIG. 39 is a cross-sectional view taken along CC in FIG. 38.

[0102] [Figure 42] FIG. 39 is a cross-sectional view taken along the line DD in FIG. 38.

[0103] [Figure 43] FIG. 10 is an exploded perspective view of a lens driving device according to a second embodiment of the present invention.

[0104] [Figure 44] FIG. 44 is an exploded perspective view of FIG. 43 as seen from another direction.

[0105] [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 omitted.

[0106] [Figure 46] FIG. 46 is a perspective view of FIG. 45 seen from another direction.

[0107] [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.

[0108] [Figure 48] FIG. 48 is a perspective view of FIG. 47 seen from another direction.

[0109] [Figure 49] FIG. 10 is a perspective view illustrating a moving unit and related configuration of a lens driving device according to a second embodiment of the present invention.

[0110] [Figure 50] FIG. 49 is a perspective view of FIG. 49 seen from another direction.

[0111] [Figure 51] FIG. 10 is a cross-sectional perspective view illustrating a driving unit and related configuration of a lens driving device according to a second embodiment of the present invention.

[0112] [Figure 52] FIG. 10 is a plan view of a lens driving device according to a second embodiment of the present invention, with the cover omitted.

[0113] [Figure 53] FIG. 53 is an enlarged plan view of a part of FIG. 52 with the cover omitted.

[0114] [Figure 54] FIG. 10 is a cross-sectional perspective view illustrating a ball and related components of a lens driving device according to a second embodiment of the present invention.

[0115] [Figure 55] FIG. 10 is a perspective view illustrating a ball and related components of a lens driving device according to a second embodiment of the present invention.

[0116] [Figure 56] FIG. 10 is a perspective view illustrating a ball receiving structure of a base of a lens driving device according to a second embodiment of the present invention.

[0117] [Figure 57] FIG. 57 is a perspective view illustrating the plate member, elastic member, and reinforcing member as seen in FIG. 56 in their arranged state.

[0118] [Figure 58] FIG. 58 is a perspective view of FIG. 57 seen from another direction.

[0119] [Figure 59] FIG. 10 is a perspective view illustrating a moving part and a ball of a lens driving device according to a second embodiment of the present invention.

[0120] [Figure 60] FIG. 59 is a perspective view of FIG. 59 seen from another direction.

[0121] [Figure 61] (a) is a diagram comparing the height of the ball and the pressure point when the moving part has moved upward, and (b) is a diagram comparing the height of the ball and the pressure point when the moving part has moved downward.

[0122] [Figure 62] FIG. 10 is a perspective view of a lens driving device according to a modified example.

[0123] [Figure 63] 63 is a cross-sectional view taken along line AA in FIG. 62.

[0124] [Figure 64] FIG. 63 is a cross-sectional view taken along the line BB in FIG. 62.

[0125] [Figure 65] FIG. 10 is an exploded perspective view of a lens driving device according to a modified example.

[0126] [Figure 66] FIG. 66 is an exploded perspective view of FIG. 65 as seen from another direction.

[0127] [Figure 67] 10A and 10B are a plan view and a partially enlarged view of a lens driving device according to a modified example in which a cover is omitted;

[0128] [Figure 68] 68 is a diagram illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention, and is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil. [Figure 69] 69 is a diagram illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention, and is a cross-sectional view illustrating a state in which a forward current is applied to the AF coil and the moving part moves upward in the optical axis direction. [Figure 70]70 is a diagram illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention, and is a cross-sectional view illustrating a state in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction.

[0129] [Figure 71] 71 is a diagram illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention, and is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil. [Figure 72] 72 is a diagram illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention, and is a cross-sectional view illustrating a state in which a forward current is applied to the AF coil and the moving part moves upward in the optical axis direction. [Figure 73] FIG. 73 is a cross-sectional view illustrating a state in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction.

[0130] [Figure 74] FIG. 10 is an exploded perspective view of a camera device according to a second embodiment of the present invention.

[0131] [Figure 75] FIG. 10 is a perspective view of an optical apparatus according to a second embodiment of the present invention.

[0132] [Figure 76] FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0133] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0134] 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.

[0135] 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 of ordinary skill in the art 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.

[0136] Furthermore, the terms used in the examples of the present invention are intended to describe the examples and are not intended to limit the present invention.

[0137] 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.

[0138] 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.

[0139] It should be noted that when a component is described as being "coupled," "coupled," or "connected" to another component, it can include not only the case where the component is directly "coupled," "coupled," or "connected" to the other component, but also the case where the component is "coupled," "coupled," or "connected" by another component between the component and the other component.

[0140] Furthermore, when described as being formed or disposed "above" or "below" each component, "above" or "below" includes not only the case where two components are in direct contact with each other, but also the case where one or more other components are formed or disposed between the two components. Furthermore, when described as "above" or "below," it can include not only the meaning of the upward direction but also the meaning of the downward direction based on one component.

[0141] The "optical axis (see OA in FIG. 29) direction" used below is defined as the optical axis direction of the lens and / or image sensor connected to the lens driving device.

[0142] 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."

[0143] 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. Furthermore, the term "autofocus feedback (CLAF, closed-loop autofocus) control" is defined as a function that senses the distance between the image sensor and the lens and controls the lens position in real time with feedback to improve the accuracy of focus adjustment.

[0144] As used below, "optical image stabilization (OIS) function" is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset camera shake in order to prevent shaking of images or videos caused by camera shake. Furthermore, "closed-loop autofocus (CLAF) control" is defined as a function that senses the position of the lens relative to the image sensor and provides feedback (feedback) to control the lens position in real time to improve the accuracy of camera shake correction.

[0145] Hereinafter, one of the "AF movement section 200" and the "OIS movement section 300" may be referred to as a "first movement section" and the other as a "second movement section."

[0146] Hereinafter, one of the "AF driving section" and the "OIS driving section" may be referred to as the "first driving section" and the other as the "second driving section."

[0147] Hereinafter, the "AF drive unit," "OIS-x drive unit," and "OIS-y drive unit" may be referred to as the "first drive unit," "second drive unit," and "third drive unit," respectively.

[0148] Hereinafter, one of the "AF magnet 410," "OIS-x magnet 510," and "OIS-y magnet 610" may be referred to as the "first magnet," another as the "second magnet," and another as the "third magnet."

[0149] Hereinafter, one of the "AF coil 420," "OIS-x coil 520," and "OIS-y coil 620" may be referred to as the "first coil," another as the "second coil," and another as the "third coil."

[0150] Hereinafter, one of the "AF magnet 410," "OIS-x magnet 510," "OIS-y magnet 610," "AF coil 420," "OIS-x coil 520," and "OIS-y coil 620" may be referred to as the "first drive unit," another as the "second drive unit," another as the "third drive unit," another as the "fourth drive unit," another as the "fifth drive unit," and another as the "sixth drive unit."

[0151] Hereinafter, one of the "inner substrate 710" and the "outer substrate 720" may be referred to as the "first substrate" and the other as the "second substrate."

[0152] Hereinafter, one of the "AF guide ball 810" and the "OIS guide ball 820" may be referred to as the "first ball" and the other as the "second ball."

[0153] Hereinafter, one of the "holder member 220" and the "preload member 230" may be referred to as the "first member" and the other as the "second member." Hereinafter, one of the "holder member 220" and the "preload member 230" may be referred to as the "first housing" and the other as the "second housing."

[0154] Hereinafter, one of the "upper elastic member 830" and the "lower elastic member 840" may be referred to as a "first elastic member" and the other as a "second elastic member."

[0155] Hereinafter, one of the "upper elastic member 830," "lower elastic member 840," and "wire 850" may be referred to as the "first support member," another as the "second support member," and another as the "third support member."

[0156] Hereinafter, one of the "AF sensor 430," "OIS-x sensor 530," and "OIS-y sensor 630" may be referred to as the "first sensor," another as the "second sensor," and another as the "third sensor."

[0157] Hereinafter, one of the "AF yoke 440," "OIS-x yoke 540," and "OIS-y yoke 640" may be referred to as the "first yoke," another as the "second yoke," and another as the "third yoke."

[0158] Hereinafter, one of the "inner groove 1111-1" and the "outer groove 1112-1" may be referred to as the "first groove" and the other as the "second groove."

[0159] Hereinafter, one of the "inner groove 1211" and the "outer groove 1212" may be referred to as the "first groove" and the other as the "second groove".

[0160] Hereinafter, one of the "inner ball 1410" and the "outer ball 1420" may be referred to as the "first ball" and the other as the "second ball."

[0161] Hereinafter, one of the "inner uppermost ball 1411" and the "outer uppermost ball 1421" may be referred to as the "first uppermost ball" and the other as the "second uppermost ball."

[0162] Hereinafter, one of the "inner lowest end ball 1412" and the "outer lowest end ball 1422" may be referred to as the "first lowest end ball" and the other as the "second lowest end ball."

[0163] Hereinafter, one of the "upper bending portion 1521," "lower bending portion 1522," and "connecting bending portion 1523" may be referred to as the "first bending portion," another as the "second bending portion," and another as the "third bending portion."

[0164] Hereinafter, one of the "inner substrate 1610" and the "outer substrate 1620" may be referred to as the "first substrate" and the other as the "second substrate."

[0165] 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.

[0166] 1 is a conceptual diagram of a lens driving device according to a first embodiment of the present invention, FIG. 2 is a perspective view of the lens driving device according to the first embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a cross-sectional view taken along line BB in FIG. 2, FIG. 5 is a cross-sectional view taken along line CC in FIG. 2, FIG. 6 is a cross-sectional view taken along line DD in FIG. 2, FIG. 7 is a cross-sectional view of the lens driving device according to the first embodiment of the present invention cut in a direction perpendicular to the optical axis and viewed from above, FIG. 8 is an exploded perspective view of the lens driving device according to the first embodiment of the present invention, and FIG. 9 is a cross-sectional view of the lens driving device according to the first embodiment of the present invention viewed from a direction different from that of FIG. 10 is an exploded perspective view of a holder member and a preload member of an AF carrier according to the first embodiment of the present invention, FIG. 11 is an exploded perspective view of the holder member and the preload member of the AF carrier as seen from a direction different from that of FIG. 10, FIGS. 12(a) and 12(b) are perspective views of an OIS moving part as seen from different directions, FIG. 13 is a perspective view of the lens driving device according to the first embodiment of the present invention with the cover omitted, and FIG. 14 is a perspective view of the lens driving device with the cover omitted as seen from a direction different from that of FIG. 15 is a perspective view illustrating a fixed portion and related components of the lens driving device according to the first embodiment of the present invention, FIG. 16 is a perspective view illustrating a moving portion and related components of the lens driving device according to the first embodiment of the present invention, FIG. 17 is a bottom perspective view of the moving portion and related components of the lens driving device as seen from a direction different from that of FIG. 16, FIG. 18 is a perspective view illustrating an AF moving portion and related components of the lens driving device according to the first embodiment of the present invention, and FIG. 19 is a perspective view illustrating the AF moving portion and related components of the lens driving device as seen from a direction different from that of FIG. 20 is a bottom view illustrating an AF moving unit and related components of the lens driving device according to the first embodiment of the present invention, FIG. 21 is a perspective view illustrating an OIS moving unit and related components of the lens driving device according to the first embodiment of the present invention, FIG. 22 is a plan view illustrating an OIS moving unit and related components of the lens driving device according to the first embodiment of the present invention, FIG. 23 is a perspective view illustrating a substrate and coils of the lens driving device according to the first embodiment of the present invention, FIG. 24 is a perspective view illustrating a substrate and coils of the lens driving device as viewed from a direction different from that of FIG. 23, and FIG. 25 is aFIG. 26 is a perspective view illustrating the coil and magnet of the lens driving device according to the first embodiment of the present invention, FIG. 27 is a side view illustrating the state of the OIS moving part pressurized via the preload member of the lens driving device according to the first embodiment of the present invention, and FIG. 28 is a perspective view illustrating the upper elastic member, lower elastic member, and wire of the lens driving device according to the first embodiment of the present invention.

[0167] The lens driving device 10 may be a voice coil motor (VCM). The lens driving device 10 may be a lens driving motor. The lens driving device 10 may be a lens driving actuator. The lens driving device 10 may include an AF module. The lens driving device 10 may include an OIS module.

[0168] 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.

[0169] The lens driving device 10 may include a base 110. The fixing part 100 may include the base 110. The base 110 may be disposed below the AF carrier 210. The base 110 may be disposed below the OIS carrier 300. The base 110 may be coupled to a cover 120. The AF carrier 210 and the OIS carrier 300 may be disposed on the base 110. The AF carrier 210 and the OIS carrier 300 may be disposed on a lower plate part 111 of the base 110. The AF carrier 210 and the OIS carrier 300 may be disposed within the base 110. The AF carrier 210 and the OIS carrier 300 may be disposed within a side wall part 112 of the base 110.

[0170] The base 110 may include a lower plate portion 111. The base 110 may include a side wall portion 112. The side wall portion 112 may be a "side portion." The side wall portion 112 may be a "side plate." The side wall portion 112 may be a "side wall." The side wall portion 112 of the base 110 may extend from an upper surface of the lower plate portion 111.

[0171] The side wall portion 112 of the base 110 may include a plurality of side walls. The side wall portion 112 of the base 110 may include four side walls. The side wall portion 112 of the base 110 may include first to fourth side walls. The side wall portion 112 of the base 110 may include a first side wall and a second side wall disposed opposite to each other, and a third side wall and a fourth side wall disposed opposite to each other. In this case, the AF magnet 410 may be disposed on the first side plate of the base 110. The OIS-x magnet 510 may be disposed at a position corresponding to the third side plate of the base 110. The OIS-y magnet 610 may be disposed at a position corresponding to the second side plate of the base 110.

[0172] The base 110 may include a groove 113. The groove 113 may be an "AF guide ball receiving groove." The AF guide ball 810 may be disposed in the groove 113. The groove 113 may be in direct contact with the AF guide ball 810. The groove 113 may be disposed in the optical axis direction. The groove 113 may include a plurality of grooves. The groove 113 may include two grooves. The two grooves may be disposed parallel to each other. The groove 113 may include a first groove that contacts the AF guide ball 810 at two points and a second groove that contacts the AF guide ball 810 at one point. As a variant, the first groove and the second groove may both contact the AF guide ball 810 at two points. The base 110 may include a first guide that guides the movement of the AF guide ball 810. The first guide may include the groove 113.

[0173] The base 110 may include a protrusion 114. The protrusion 114 may protrude outward. The connecting portion 712 of the outer substrate 710 may be disposed above and below the protrusion 114. A groove may be formed in the protrusion 114 to prevent interference even when the connecting portion 712 of the outer substrate 710 moves.

[0174] The base 110 may include a step. The step may be formed at a lower end of the outer surface of the base 110. The step may protrude from the outer surface of the base 110. The side plate 122 of the cover 120 may be disposed on the step of the base 110.

[0175] The lens driving device 10 may include a cover 120. The fixed part 100 may include the cover 120. The cover 120 may be disposed on the base 110. The cover 120 may be disposed on the base 110. The cover 120 may be coupled to the base 110. The cover 120 may be fixed to the base 110. The cover 120 may house the AF carrier 210 therein. The cover 120 may house the OIS carrier 300 therein. The cover 120 may be a shielding member. The cover 120 may be a shielding can.

[0176] The cover 120 may include an upper plate 121. The upper plate 121 may be disposed on the moving part. The upward movement of the moving part may be restricted by the moving part contacting the upper plate 121. The upper plate 121 may include a hole through which light passes.

[0177] The cover 120 may include side plates 122. The side plates 122 may extend from the top plate 121. The side plates 122 may be disposed on the base 110. The side plates 122 may be disposed on stepped portions formed to protrude from the lower end of the outer surface of the base 110. The side plates 122 may include a plurality of side plates. The side plates 122 may include four side plates. The side plates 122 may include a first side plate and a second side plate disposed opposite to each other, and a third side plate and a fourth side plate disposed opposite to each other.

[0178] 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 disposed so as to be movable relative to the fixed unit 100. The moving unit may be moved relative to the fixed unit 100 by a driving unit. The moving unit may move during AF driving. The moving unit may move during OIS driving. A lens may be coupled to the moving unit.

[0179] The lens driving device 10 may include an AF moving unit 200. The AF moving unit 200 may be disposed on the fixed unit 100. The AF moving unit 200 may be disposed within the fixed unit 100. The AF moving unit 200 may be disposed on the fixed unit 100. The AF moving unit 200 may be disposed between the fixed unit 100 and the OIS moving unit. The AF moving unit 200 may be disposed so as to be movable relative to the fixed unit 100. The AF moving unit 200 may be moved in the optical axis direction relative to the fixed unit 100 by the AF driving unit. The AF moving unit 200 may move during AF driving.

[0180] The lens driving device 10 may include an AF carrier 210. The AF movement unit 200 may include the AF carrier 210. The AF carrier 210 may be an "AF holder." The AF carrier 210 may be a "housing." The AF carrier 210 may be disposed within the base 110. The AF carrier 210 may be disposed on the base 110. The AF carrier 210 may be disposed within the cover 120. The AF carrier 210 may be disposed between the base 110 and the OIS carrier 300. The AF carrier 210 may be disposed so as to be movable in the optical axis direction.

[0181] The AF carrier 210 may include a frame, a first upper plate, and a second upper plate. In this case, the frame may be a main body. The frame may be a holder member 220. The first upper plate may be a metal member 225. The second upper plate may be a preload member 230. The AF carrier 210 may be a housing. The housing may include a first housing and a second housing. In this case, the first housing may include the holder member 220, and the second housing may include the preload member 230. The OIS carrier 300 may be a bobbin. The OIS guide ball 820 may be disposed between the housing and the bobbin. The AF guide ball 810 may be disposed between a side surface of the housing and the cover 120. The AF guide ball 810 may be disposed between a side surface of the housing and the base or a pillar of the base.

[0182] The lens driving device 10 may include a holder member 220. The AF carrier 210 may include the holder member 220. The holder member 220 may be formed separately from the preload member 230. A lower elastic member 840 may be coupled to the holder member 220.

[0183] The AF carrier 210 may include an upper plate 221. The upper plate 221 may be disposed on the OIS carrier 300. The upper plate 221 may be disposed between the OIS carrier 300 and the upper plate 121 of the cover 120. The upper plate 221 may be disposed on the OIS moving part.

[0184] The AF carrier 210 may include a groove 222. The holder member 220 may include a groove 222. The upper plate 221 of the holder member 220 may include the groove 222. The groove 222 may be formed in the upper plate 221 of the holder member 220. The groove 222 may be open to the inside. The preload member 230 may be inserted into the groove 222. The protrusion 231 of the preload member 230 may be inserted into the groove 222. The groove 222 may be formed as a hole. The groove 222 may be replaced with a hole. That is, as a modified example, the AF carrier 210 may include a hole into which the protrusion 231 of the preload member 230 is inserted.

[0185] The AF carrier 210 may include a sidewall 223. The sidewall 223 may extend downward from the upper plate 221. An inner substrate 720 may be disposed on the sidewall 223. An AF coil 420 may be disposed on the sidewall 223. An OIS-x coil 520 may be disposed on the sidewall 223. An OIS-y coil 620 may be disposed on the sidewall 223. The sidewall 223 may include a groove for avoiding the coil. The sidewall 223 may include a plurality of sidewalls. The sidewall 223 may include four sidewalls. The sidewall 223 may include a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall and a fourth sidewall disposed opposite to each other.

[0186] The AF carrier 210 may include a groove 224. The holder member 220 may include a groove 224. The groove 224 may be an "AF guide ball receiving groove." The AF guide ball 810 may be disposed in the groove 224. The groove 224 may be in direct contact with the AF guide ball 810. The groove 224 may be disposed in the optical axis direction. The groove 224 may include a plurality of grooves. The groove 224 may include two grooves. The two grooves may be disposed parallel to each other. The groove 224 may include a first groove that contacts the AF guide ball 810 at two points and a second groove that contacts the AF guide ball 810 at one point. As a variant, the first groove and the second groove may both contact the AF guide ball 810 at two points. A side surface of the AF carrier 210 may include a second guide that guides the AF guide ball 810 to move. The second guide may include the groove 224.

[0187] The AF carrier 210 may include a metal member 225. The holder member 220 may include a metal member 225. The metal member 225 may be insert-injected into the holder member 220. At least a portion of the metal member 225 may be disposed on an upper surface of the holder member 220. The metal member 225 may be disposed to reinforce the strength of the holder member 220.

[0188] The AF carrier 210 may include a protrusion 226. The holder member 220 may include a protrusion 226. The protrusion 226 may be formed on an outer surface of the AF carrier 210. The protrusion 226 may protrude outward from the AF carrier 210. Connection portions 712 may be disposed on the upper and lower surfaces of the protrusion 226.

[0189] The AF carrier 210 may include a hole 227. The hole 227 may be disposed adjacent to the upper surface of the protrusion 226.

[0190] The lens driving device 10 may include a preload member 230. The AF carrier 210 may include a preload member 230. The preload member 230 may be coupled to an upper surface of the holder member 220. The preload member 230 can be coupled to the holder member 220. The preload member 230 can be inserted into the holder member 220 from above and coupled to it. The preload member 230 can pressurize the OIS guide balls 820. The preload member 230 can contact the OIS guide balls 820. The preload member 230 can directly contact the OIS guide balls 820. The preload member 230 can be coupled to the holder member 220 and pressurize the OIS guide balls 820.

[0191] The AF carrier 210 may include a protrusion 231. The preload member 230 may include a protrusion 231. The protrusion 231 may be coupled to the groove 222 of the holder member 220. The protrusion 231 of the preload member 230 may be inserted into the groove 222 of the holder member 220 from above. The protrusion 231 of the preload member 230 may be disposed in the groove 222 of the holder member 220. At least a portion of the protrusion 231 of the preload member 230 may be disposed in the groove 222 of the holder member 220. The OIS guide ball 820 may be disposed at a lower end of the protrusion 231 of the preload member 230. The protrusion 231 may include a plurality of protrusions. The protrusion 231 may include four protrusions.

[0192] The AF carrier 210 may include a groove 232. The preload member 230 may include a groove 232. The groove 232 may be an "OIS guide ball receiving groove." The groove 232 may be formed in the protrusion 231. The groove 232 may be formed on a lower surface of the protrusion 231. The groove 232 may be formed at an end of the protrusion 231. The groove 232 may be formed as a concave on the lower surface of the protrusion 231. The OIS guide ball 820 may be disposed in the groove 232. The groove 232 may be in direct contact with the OIS guide ball 820.

[0193] The lens driving device 10 may include a cover 240. The AF movement unit 200 may include a cover 240. The cover 240 may be coupled to the AF carrier 210. The cover 240 may be coupled to the underside of the AF carrier 210. The cover 240 may be coupled to the underside of the AF carrier 210. The cover 240 may include a hook. The hook of the cover 240 may be coupled to the AF carrier 210. The hook of the cover 240 may protrude upward and be coupled to a side surface of the AF carrier 210.

[0194] Hereinafter, the "groove 222," "groove 224," and "groove 232" of the AF carrier 210 can be referred to as the "first groove," "second groove," and "third groove," respectively.

[0195] The lens driving device 10 may include an OIS moving unit. The OIS moving unit may be disposed in 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 within the AF moving unit 200. The OIS moving unit may be disposed so as to be movable. The OIS moving unit may be moved in a direction perpendicular to the optical axis relative to the fixed unit 100 and the AF moving unit 200 by the OIS driving unit. The OIS moving unit may move when the OIS is driven.

[0196] The lens driving device 10 can include an OIS carrier 300. The OIS moving unit can include the OIS carrier 300. The OIS carrier 300 may be an "OIS holder." The OIS carrier 300 may be a "bobbin." The OIS carrier 300 can be disposed in the AF carrier 210. The OIS carrier 300 can be disposed in the AF carrier 210. The OIS carrier 300 can be disposed in the base 110. The OIS carrier 300 can be disposed on the base 110. The OIS carrier 300 can be disposed in the cover 120. The OIS carrier 300 can be disposed so as to be movable in a direction perpendicular to the optical axis.

[0197] The OIS carrier 300 may include an outer surface. The OIS carrier 300 may include multiple side surfaces. The OIS carrier 300 may include first and second side surfaces opposite each other, and third and fourth side surfaces opposite each other. The AF coil 420 may be disposed between the first side surface of the OIS carrier 300 and the AF magnet 410. The OIS-x magnet 510 may be disposed on the third side surface of the OIS carrier 300. The OIS-y magnet 610 may be disposed on the second side surface of the OIS carrier 300.

[0198] The OIS carrier 300 may include a groove. The groove may be an "upper elastic member interference prevention groove." The groove 311 may be formed on the upper surface of the OIS carrier 300. The groove 311 may be formed in a concave shape on the upper surface of the OIS carrier 300. The groove 311 may be disposed at a position corresponding to the upper elastic member 830 so as to prevent the OIS carrier 300 and the upper elastic member 830 from interfering with each other.

[0199] The OIS carrier 300 may include a groove 310. The groove 310 may be an "OIS guide ball receiving groove." The OIS guide balls 820 may be disposed in the groove 310. The groove 310 may be in direct contact with the OIS guide balls 820. The groove 310 may be disposed in a direction perpendicular to the optical axis. The groove 310 may be recessed in the optical axis direction. The groove 310 may include multiple grooves. The groove 310 may include four grooves. The groove 310 may contact the OIS guide balls 820 at one point. Alternatively, the groove 310 may contact the OIS guide balls 820 at two points. The number of points at which the OIS carrier 300 and the OIS guide balls 820 contact each other may change depending on the movement of the OIS guide balls 820. The groove 310 may be formed on the upper surface of the OIS carrier 300. The groove 310 may be open at the top.

[0200] The OIS carrier 300 may include side stoppers. The side stoppers may limit the lateral stroke of the OIS carrier 300. That is, when the OIS carrier 300 moves to its maximum extent, the side stoppers of the OIS carrier 300 may come into contact with one or more of the AF carrier 210 and the base 110. The side stoppers may be formed on the outer surface of the OIS carrier 300. The side stoppers may protrude outward from the side surfaces of the OIS carrier 300.

[0201] The OIS carrier 300 may include a protrusion 320. The protrusion 320 may be coupled to the upper elastic member 830. The protrusion 320 may be a "coupling protrusion." The upper elastic member 830 may include a hole into which the protrusion 320 of the OIS carrier 300 is inserted. The protrusion 320 may be formed on the upper surface of the OIS carrier 300.

[0202] The OIS carrier 300 may include a groove 330. The groove 330 may be a "lens adhesive receiving groove." The groove 330 may be formed on the inner circumferential surface of the OIS carrier 300. The groove 330 may be formed in a concave shape on the inner circumferential surface of the OIS carrier 300. An adhesive may be injected between the lens and the OIS carrier 300 through the groove 330. An adhesive for bonding the lens and the OIS carrier 300 may be disposed in the groove 330.

[0203] The OIS carrier 300 may include a groove 340. The groove 340 may be formed on the lower surface of the OIS carrier 300. The groove 340 may be open to the outside.

[0204] The OIS carrier 300 may include a mounting portion 350. The mounting portion 350 may be a “magnet mounting portion.” Magnets 510 and 620 may be disposed in the mounting portion 350.

[0205] Hereinafter, one of the "grooves 310," "grooves 330," and "grooves 340" of the OIS carrier 300 may be referred to as the "first groove," another as the "second groove," and another as the "third groove."

[0206] 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 an OIS-x driving unit. The driving unit may include an OIS-y driving unit. The driving unit may include a coil and a magnet.

[0207] The lens driving device 10 may include an AF driving unit. The AF driving unit can move the AF moving unit 200 in the optical axis direction. The AF driving unit can move the AF carrier 210 in the optical axis direction. The AF driving unit can move the AF carrier 210 in the optical axis direction via electromagnetic force. The AF driving unit may include a coil and a magnet.

[0208] In the first embodiment of the present invention, the AF carrier 210 and the OIS carrier 300 can move in the optical axis direction due to the interaction between the AF coil 420 and the AF magnet 410. The AF coil 420, the AF carrier 210, and the OIS carrier 300 can move in the optical axis direction as a unit.

[0209] The lens driving device 10 may include an AF magnet 410. The AF driving unit may include the AF magnet 410. The AF magnet 410 may be an "AF magnet." The AF magnet 410 may be a permanent magnet. The AF magnet 410 may be disposed in the fixed unit 100. The AF magnet 410 may be disposed in the base 110. The AF magnet 410 may be disposed in the cover 120. The AF magnet 410 may be disposed on a side plate 122 of the cover 120. The AF magnet 410 may be disposed on an outer surface of the base 110. The AF magnet 410 may be disposed on an inner surface of the base 110. The AF magnet 410 may be fixed to the base 110. The AF magnet 410 may be coupled to the base 110. The AF magnet 410 may be adhered to the base 110 with an adhesive. The AF magnet 410 may be disposed within the cover 120. The AF magnet 410 may interact with the AF coil 420. The AF magnet 410 can electromagnetically interact with the AF coil 420. The AF magnet 410 can be disposed at a position corresponding to the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 can overlap with the AF coil 420 in a direction perpendicular to the optical axis.

[0210] The AF magnet 410 may be a four-pole magnet. The AF magnet 410 may include a four-pole magnetized magnet. The AF magnet 410 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a vertical direction. The first magnet portion and the second magnet portion may be arranged spaced apart in the vertical direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0211] The lens driving device 10 may include an AF coil 420. The AF driving unit may include the AF coil 420. The AF coil 420 may interact with the AF magnet 410. The AF coil 420 may face the AF magnet 410. The AF coil 420 may be disposed at a position corresponding to the AF magnet 410. The AF coil 420 may overlap the AF magnet 410 in a direction perpendicular to the optical axis. The AF coil 420 may be disposed on the inner substrate 720. The AF coil 420 may be disposed on the AF carrier 210. The AF coil 420 may be disposed on the AF movement unit 200.

[0212] In the first embodiment of the present invention, the AF coil 420 can move in the optical axis direction. The AF coil 420 can move in the optical axis direction through interaction with the AF magnet 410. The AF coil 420 can move together with the AF movement unit 200. The AF coil 420 can move in the optical axis direction together with the AF movement unit 200. During the AF driving process, the AF coil 420 can move in the optical axis direction together with the AF movement unit 200. The AF coil 420 can be disposed in the AF movement unit 200. The AF coil 420 can be fixed to the AF movement unit 200. The AF coil 420 can be coupled to the AF movement unit 200.

[0213] The lens driving device 10 may include an AF sensor 430. The AF driving unit may include the AF sensor 430. The AF sensor 430 may be a Hall sensor. The AF sensor 430 may be disposed on the inner substrate 720. The AF sensor 430 may sense the AF magnet 410. The AF sensor 430 may sense movement of the AF magnet 410. The amount of movement or position of the AF magnet 410 sensed by the AF sensor 430 may be used as feedback for autofocus driving.

[0214] The AF sensor 430 may be a driver IC. The driver IC may include a sensing unit. The sensing unit may include a Hall element (Hall IC). The driver IC may be electrically connected to the AF coil 420. The driver IC may supply a current to the AF coil 420.

[0215] The AF sensor 430 may be disposed within the AF coil 420. The AF sensor 430 may overlap with the neutral portion of the AF magnet 410 in a direction perpendicular to the optical axis. Alternatively, the AF sensor 430 may be disposed outside the AF coil 420. The AF sensor 430 may overlap with the AF coil 420 in the optical axis direction. The AF sensor 430 may overlap with the AF coil 420 in the direction perpendicular to the optical axis.

[0216] The lens driving device 10 may include an AF yoke 440. The AF yoke 440 may be disposed at a position corresponding to the AF magnet 410. An attractive force may act between the AF yoke 440 and the AF magnet 410. The attractive force between the AF yoke 440 and the AF magnet 410 may keep the AF guide ball 810 in contact with the base 110 and the AF carrier 210. The AF yoke 440 may be disposed on the inner substrate 720. The AF yoke 440 may be disposed inside the AF coil 420.

[0217] The lens driving device 10 may include an OIS driving unit. The OIS driving unit can move the OIS moving unit in a direction perpendicular to the optical axis direction. The OIS driving unit can move the OIS carrier 300 in a direction perpendicular to the optical axis. The OIS driving unit can move the OIS carrier 300 in a direction perpendicular to the optical axis via electromagnetic force.

[0218] The lens driving device 10 may include an OIS-x driving unit. The OIS driving unit may include an OIS-x driving unit. The OIS driving unit may move the OIS carrier 300 in the x-axis direction perpendicular to the optical axis. The OIS driving unit may move the OIS carrier 300 in the x-axis direction perpendicular to the optical axis via electromagnetic force. The OIS driving unit may include a coil and a magnet.

[0219] In the first embodiment of the present invention, the OIS-x magnet 510 and the OIS-x coil 520 can move the OIS moving unit in a first direction perpendicular to the optical axis direction. In this case, the first direction may be the x-axis direction. The interaction between the OIS-x coil 520 and the OIS-x magnet 510 can move the OIS carrier 300 in the x-axis direction perpendicular to the optical axis direction. The OIS-x magnet 510 and the OIS carrier 300 can move together in the x-axis direction.

[0220] The lens driving device 10 may include an OIS-x magnet 510. The OIS driving unit may include the OIS-x magnet 510. The OIS-x magnet 510 may be an "OIS-x magnet." The OIS-x magnet 510 may be a permanent magnet. The OIS-x magnet 510 may be disposed in the OIS moving unit. The OIS-x magnet 510 may be separated from the AF magnet 410. The OIS-x magnet 510 may be disposed in the OIS carrier 300. The OIS-x magnet 510 may be disposed on the outer surface of the OIS carrier 300. The OIS-x magnet 510 may be fixed to the OIS carrier 300. The OIS-x magnet 510 may be coupled to the OIS carrier 300. The OIS-x magnet 510 may be adhered to the OIS carrier 300 with an adhesive. The OIS-x magnet 510 may be disposed within the cover 120. The OIS-x magnet 510 may interact with the OIS-x coil 520. The OIS-x magnet 510 can electromagnetically interact with the OIS-x coil 520. The OIS-x magnet 510 can be disposed at a position corresponding to the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 can overlap with the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x magnet 510 can overlap with the OIS-x coil 520 in the x-axis direction. The OIS-x magnet 510 can move in the x-axis direction perpendicular to the optical axis. The second magnet 610 may be a two-pole magnet. The OIS-x magnet 510 may include a two-pole magnetized magnet. The OIS-x magnet 510 may include a north pole and a south pole.

[0221] The lens driving device 10 may include an OIS-x coil 520. The OIS driving unit may include an OIS-x coil 520. The OIS-x coil 520 may interact with the OIS-x magnet 510. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction, which is perpendicular to the optical axis. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction through its interaction with the OIS-x magnet 510. The OIS-x coil 520 may face the OIS-x magnet 510. The OIS-x coil 520 may be positioned at a position corresponding to the OIS-x magnet 510. The OIS-x coil 520 may overlap the OIS-x magnet 510 in the direction perpendicular to the optical axis. The OIS-x coil 520 may be disposed on the inner substrate 720. The OIS-x coil 520 can be disposed on the AF carrier 210 .

[0222] In the first embodiment of the present invention, OIS-x coil 520 can move together with AF shifter 200. OIS-x coil 520 can move in the optical axis direction together with AF shifter 200. During the AF driving process, OIS-x coil 520 can move in the optical axis direction together with AF shifter 200. OIS-x coil 520 can be disposed on AF shifter 200. OIS-x coil 520 can be fixed to AF shifter 200. OIS-x coil 520 can be coupled to AF shifter 200.

[0223] The lens driving device 10 may include an OIS-x sensor 530. The OIS driving unit may include the OIS-x sensor 530. The OIS-x sensor 530 may be disposed on the inner substrate 720. The OIS-x sensor 530 may include a Hall sensor. The OIS-x sensor 530 may sense the OIS-x magnet 510. The OIS-x sensor 530 may sense the magnetic force of the OIS-x magnet 510. The OIS-x sensor 530 may be disposed above the OIS-magnet 520. The OIS-x sensor 530 may overlap with the OIS-magnet 520 in the optical axis direction. Alternatively, the OIS-x sensor 530 may be disposed within the OIS-x coil 520. The OIS-x sensor 530 may overlap with the OIS-x coil 520 in the optical axis direction. The OIS-x sensor 530 may overlap the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x sensor 530 may face the OIS-x magnet 510. The OIS-x sensor 530 may be disposed at a position corresponding to the OIS-x magnet 510. The OIS-x sensor 530 may sense the movement of the OIS-x magnet 510. The amount of movement or position of the OIS-x magnet 510 sensed by the OIS-x sensor 530 may be used as feedback for image stabilization driving in the x-axis direction.

[0224] The lens driving device 10 may include an OIS-x yoke 540. The OIS-x yoke 540 may be disposed on the OIS-x magnet 510. The OIS-x yoke 540 may be disposed between the OIS-x magnet 510 and the OIS carrier 300. The OIS-x yoke 540 may prevent magnetic flux leakage from the OIS-x magnet 510 and improve the interaction force with the OIS-x coil 520.

[0225] The lens driving device 10 may include an OIS-y driving unit. The OIS driving unit may include an OIS-y driving unit. The OIS-y driving unit may move the OIS carrier 300 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction. The OIS-y driving unit may move the OIS carrier 300 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction, via electromagnetic force. The OIS-y driving unit may include a coil and a magnet.

[0226] In the first embodiment of the present invention, the OIS-y magnet 610 and the OIS-y coil 620 may move the OIS moving unit in a second direction perpendicular to the optical axis direction and the first direction. In this case, the second direction may be the y-axis direction. The interaction between the OIS-y coil 620 and the OIS-y magnet 610 allows the OIS carrier 300 to move in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y magnet 610 and the OIS carrier 300 can move together in the y-axis direction. The OIS-y magnet 610 can overlap the AF magnet 410 in the second direction. The OIS-y magnet 610 can overlap the AF magnet 410 in the y-axis direction.

[0227] The lens driving device 10 may include an OIS-y magnet 610. The OIS-y driving unit may include the OIS-y magnet 610. The OIS-y magnet 610 may be an "OIS-y magnet." The OIS-y magnet 610 may be a permanent magnet. The OIS-y magnet 520 may be disposed in the OIS moving unit. The OIS-y magnet 610 may be spaced apart from the OIS-x magnet 510. The OIS-y magnet 610 may be spaced apart from the AF magnet 410. The OIS-y magnet 610 may be disposed in the OIS carrier 300. The OIS-y magnet 610 may be disposed on the outer surface of the OIS carrier 300. The OIS-y magnet 610 may be fixed to the OIS carrier 300. The OIS-y magnet 610 may be coupled to the OIS carrier 300. The OIS-y magnet 610 may be adhered to the OIS carrier 300 with an adhesive. The OIS-y magnet 610 may be disposed within the cover 120. The OIS-y magnet 610 may interact with the OIS-y coil 620. The OIS-y magnet 610 may electromagnetically interact with the OIS-y coil 620. The OIS-y magnet 610 may be disposed at a position corresponding to the OIS-y coil 620. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may overlap with the OIS-y coil 620 in a direction perpendicular to the optical axis. The OIS-y magnet 610 may overlap with the OIS-y coil 620 in the y-axis direction. The OIS-y magnet 610 may move in the y-axis direction.

[0228] The OIS-y magnet 610 may be a two-pole magnet. The OIS-y magnet 610 may include a two-pole magnetized magnet. The OIS-y magnet 610 may include a north pole and a south pole.

[0229] The lens driving device 10 may include an OIS-y coil 620. The OIS-y driving unit may include an OIS-y coil 620. The OIS-y coil 620 may interact with the OIS-y magnet 610. The OIS-y coil 620 may be disposed on the opposite side of the AF coil 420 with respect to the optical axis. The OIS-y coil 620 may move the OIS-y magnet 610 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis. The OIS-y coil 620 may move the OIS-y magnet 610 in the y-axis direction through its interaction with the OIS-y magnet 610. The OIS-y coil 620 may face the OIS-y magnet 610. The OIS-y coil 620 may be disposed at a position corresponding to the OIS-y magnet 610. The OIS-y coil 620 can be overlapped with the OIS-y magnet 610 in a direction perpendicular to the optical axis. The OIS-y coil 620 can be disposed on the inner substrate 720. The OIS-y coil 620 can be disposed on the inner substrate 720. The OIS-y coil 620 can be disposed on the AF carrier (200).

[0230] In the first embodiment of the present invention, the OIS-y coil 620 can move together with the AF movement unit 200. The OIS-y coil 620 can move in the optical axis direction together with the AF movement unit 200. During the AF driving process, the OIS-y coil 620 can move in the optical axis direction together with the AF movement unit 200. The OIS-y coil 620 can be disposed in the AF movement unit 200. The OIS-y coil 620 can be fixed to the AF movement unit 200. The OIS-y coil 620 can be coupled to the AF movement unit 200.

[0231] The lens driving device 10 may include an OIS-y sensor 630. The OIS-y driving unit may include the OIS-y sensor 630. The OIS-y sensor 630 may be disposed on the inner substrate 720. The OIS-y sensor 630 may include a Hall sensor. The OIS-y sensor 630 may sense the OIS-y magnet 610. The OIS-y sensor 630 may sense the magnetic force of the OIS-y magnet 610. The OIS-y sensor 630 may be disposed above the OIS-y magnet 620. The OIS-y sensor 630 may overlap with the OIS-y magnet 620 in the optical axis direction. The OIS-y sensor 630 may overlap with the OIS-y magnet 620 in a direction perpendicular to the optical axis. As a variant, the OIS-y sensor 630 may be disposed within the OIS-y coil 620. The OIS-y sensor 630 may overlap with the OIS-y coil 620 in the optical axis direction. The OIS-y sensor 630 may face the OIS-y magnet 610. The OIS-y sensor 630 may be disposed at a position corresponding to the OIS-y magnet 610. The OIS-y sensor 630 may sense movement of the OIS-y magnet 610. The movement amount or position of the OIS-y magnet 610 sensed by the OIS-y sensor 630 may be used as feedback for image stabilization driving in the y-axis direction.

[0232] The lens driving device 10 may include an OIS-y yoke 640. The OIS-y yoke 640 may be disposed on the OIS-y magnet 610. The OIS-y yoke 640 may be disposed between the OIS-y magnet 610 and the OIS carrier 300. The OIS-y yoke 640 may prevent magnetic flux leakage from the OIS-y magnet 610 and improve the interaction force with the OIS-y coil 620.

[0233] When viewed from the side, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order on an imaginary straight line. When viewed from the top, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order on an imaginary straight line. When viewed from the side, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order. When viewed from the side, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order in the y-axis direction. When viewed from the side, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be overlapped in the y-axis direction.

[0234] The lens driving device 10 may include substrates 710 and 720. The substrates 710 and 720 may include flexible printed circuit boards (FPCBs). The substrates 710 and 720 may be electrically connected to the coils 420, 520, and 620. The substrates 710 and 720 may be electrically connected to the sensors 430, 530, and 630.

[0235] The lens driving device 10 may include an outer substrate 710. The outer substrate 710 may be disposed on the base 110. The outer substrate 710 may be electrically connected to the coils 420, 520, and 620. The outer substrate 710 may be electrically connected to the sensors 430, 530, and 630. The outer substrate 710 may connect the AF carrier 210 to the base 110. The outer substrate 710 may elastically connect the AF carrier 210 to the base 110. The outer substrate 710 may support the AF carrier 210 movably relative to the base 110. The outer substrate 710 may guide the AF carrier 210 to move in the optical axis direction relative to the base 110. The outer substrate 710 may include a flexible substrate. The outer substrate 710 may include a flexible printed circuit board (FPCB). The outer substrate 710 may include an elastic portion. The outer substrate 710 may include an elastic member. The outer substrate 710 may include an outer portion 711 disposed on the fixing portion 100 and a connecting portion 712 extending from the outer portion 711 and coupled to the inner substrate 720 .

[0236] The outer substrate 710 may include an outer portion 711. The outer portion 711 may be disposed on the base 110. The outer portion 711 may be formed to wrap around the side surfaces of the base 110. The outer portion 711 may be disposed on three side surfaces of the base 110. The outer portion 711 may include two terminal portions. The two terminal portions may be disposed on opposite sides of the optical axis. The terminal portion may include a terminal 712-1.

[0237] The outer substrate 710 may include a terminal 711-1. An outer portion 711 of the outer substrate 710 may include a terminal 711-1. The terminal 711-1 may be electrically connected to the terminal 712-1. The terminal 711-1 may be disposed at a lower end of the base 110. The terminal 711-1 may be coupled to the printed circuit board 50. The terminal 711-1 may be coupled to a terminal of the printed circuit board 50 via solder. The terminal 711-1 may be coupled to a terminal of the printed circuit board 50 through a conductive member. The terminal 711-1 may be coupled to a terminal of the printed circuit board 50. The terminal 711-1 may be electrically connected to a terminal of the printed circuit board 50.

[0238] The outer substrate 710 may include a connecting portion 712. The connecting portion 712 may be an "extension portion." The connecting portion 712 may be a "leg portion." The connecting portion 712 may extend from the outer portion 711. At least a portion of the connecting portion 712 may move together with the AF carrier 210. The extension portion may extend from the outer portion 711. At least a portion of the extension portion may move together with the AF carrier 210. At least a portion of the connecting portion 712 may be disposed perpendicular to the optical axis direction. The connecting portion 712 of the outer substrate 710 may be coupled to the inner substrate 720 such that the inner substrate 720 is movable in the optical axis direction. At least a portion of the connecting portion 712 may be disposed parallel to the optical axis direction.

[0239] The connecting portion 712 may include a plurality of connecting portions. The connecting portion 712 may include a first connecting portion and a second connecting portion. The second connecting portion may be disposed below the first connecting portion.

[0240] The outer substrate 710 may include a terminal 712-1. The connecting portion 712 of the outer substrate 710 may include a terminal 712-1. The terminal 712-1 may be coupled to a terminal 721-1 of the inner substrate 720. The terminal 712-1 of the outer substrate 710 may be coupled to the terminal 721-1 of the inner substrate 720 via solder. The terminal 712-1 of the outer substrate 710 may be coupled to the terminal 721-1 of the inner substrate 720 via an electrically conductive member. The terminal 712-1 of the outer substrate 710 may be coupled to the terminal 721-1 of the inner substrate 720. The terminal 712-1 of the outer substrate 710 may be electrically connected to the terminal 721-1 of the inner substrate 720.

[0241] Hereinafter, one of the "terminal 711-1" and the "terminal 712-1" of the outer substrate 710 may be referred to as the "first terminal" and the other as the "second terminal."

[0242] The lens driving device 10 may include an inner substrate 720. The inner substrate 720 may be electrically connected to the coils 420, 520, and 620. The inner substrate 720 may be electrically connected to the sensors 430, 530, and 630. The inner substrate 720 may be disposed in the AF movement unit 200. The inner substrate 720 may be disposed in the AF carrier 210. The inner substrate 720 may be fixed to the AF carrier 210. The inner substrate 720 may be coupled to the AF carrier 210. The inner substrate 720 may be adhered to the AF carrier 210 with an adhesive. The inner substrate 720 may include a flexible substrate. The inner substrate 720 may include a flexible printed circuit board (FPCB). The inner substrate 720 may include an elastic portion. The inner substrate 720 may include an elastic member.

[0243] The inner substrate 720 may include a side plate portion 721. The side plate portion 721 may be disposed on a side surface of the AF carrier 210. The side plate portion 721 may be disposed on an outer surface of the AF carrier 210. As another example, the side plate portion 721 may be disposed on an inner surface of the AF carrier 210. The side plate portion 721 of the inner substrate 720 may include a plurality of portions. The side plate portion 721 may include first to fourth portions.

[0244] The inner substrate 720 may include a first portion. The first portion may be disposed on the AF carrier 210. The AF coil 420 may be disposed on the first portion of the inner substrate 720. The AF sensor 430 may be disposed on the first portion of the inner substrate 720. The AF yoke 440 may be disposed on the first portion of the inner substrate 720.

[0245] The inner substrate 720 may include a second portion. The second portion may be disposed on the opposite side of the first portion. The second portion may be disposed on the AF carrier 200. The second portion may be disposed on a second side of the AF carrier 200. The OIS-y coil 620 may be disposed on the second portion of the inner substrate 720. The OIS-y sensor 630 may be disposed on the second portion of the inner substrate 720. More specifically, the OIS-y sensor 630 may be disposed on an upper plate portion 722 that is bent and disposed above the second portion of the inner substrate 720. The OIS-y sensor 630 may be disposed on a lower surface of the upper plate portion 722.

[0246] The inner substrate 720 may include a third portion. The third portion may be disposed on the AF carrier 200. The third portion may be disposed on a third side surface of the AF carrier 200. The OIS-x coil 520 may be disposed on the third portion of the inner substrate 720. The OIS-x sensor 530 may be disposed on the third portion of the inner substrate 720. More specifically, the OIS-x sensor 530 may be disposed on an upper plate portion 722 that is bent and disposed above the third portion of the inner substrate 720. The OIS-x sensor 530 may be disposed on a lower surface of the upper plate portion 722.

[0247] The inner substrate 720 may include a fourth portion. The fourth portion may be disposed on the opposite side of the third portion. The fourth portion may be disposed on the AF carrier 200. The fourth portion may be disposed on a fourth side of the AF carrier 200.

[0248] The inner substrate 720 may include a terminal 721-1. The terminal 721-1 may be disposed on a fourth portion of the inner substrate 720. The terminal 721-1 may be electrically connected to the coils 420, 520, and 620. The terminal 721-1 may be electrically connected to the sensors 430, 530, and 630.

[0249] The lens driving device 10 may include a guide member. The guide member may include a ball. The guide member may include a pin. The guide member may include a cylindrical member. The guide member can guide the movement of the movable part relative to the fixed part 100 in a specific direction.

[0250] The lens driving device 10 may include an AF guide ball 810. The AF guide ball 810 may guide the movement of the AF carrier 210 relative to the base 110 in the optical axis direction. The AF guide ball 810 may be disposed between the fixed part 100 and the AF moving part 200. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210. The AF guide ball 810 may be disposed between a side surface of the AF carrier 210 and the base 110. The AF guide ball 810 may be disposed between the cover 120 and a pillar of the base 110. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210 in the y-axis direction. The AF guide ball 810 may be disposed in the groove 113 of the base 110. The AF guide ball 810 may be disposed in the groove 224 of the AF carrier 210. The AF guide ball 810 may include a first ball that contacts the base 110 and the AF carrier 210 at four points and a second ball that contacts the base 110 and the AF carrier 210 at three points. The AF guide ball 810 may be spherical. The AF guide ball 810 may be made of metal. Grease may be applied to the surface of the AF guide ball 810.

[0251] The AF guide balls 810 may include a plurality of balls. The AF guide balls 810 may include eight balls. Four of the AF guide balls 810 may be disposed on one side of the AF magnet 410, and the remaining four AF guide balls 810 may be disposed on the other side of the AF magnet 410.

[0252] The lens driving device 10 may include an OIS guide ball 820. The OIS guide ball 820 can guide the movement of the OIS carrier 300 relative to the AF carrier 210 in a direction perpendicular to the optical axis. The OIS guide ball 820 can be disposed between the AF movement unit 200 and the OIS movement unit. The OIS guide ball 820 can be disposed between the AF carrier 210 and the OIS carrier 300. The OIS guide ball 820 can be disposed between the AF carrier 210 and the OIS carrier 300 in the optical axis direction.

[0253] The OIS guide ball 820 may be disposed between the preload member 230 of the AF carrier 210 and the OIS carrier 300. The OIS guide ball 820 may be pressed between the AF carrier 210 and the OIS carrier 300 by the pressing forces of the elastic members 830, 840, and 850. The preload member 230 may press the OIS guide ball 820 downward during the process of coupling to the holder member 220. The preload member 230 may press the OIS guide ball 820 toward the OIS carrier 300 during the process of coupling to the holder member 220. At this time, the OIS carrier 300 may press the OIS guide ball 820 toward the preload member 230 due to the restoring forces of the elastic members 830, 840, and 850. Therefore, the OIS guide ball 820 may be pressed between the preload member 230 and the OIS carrier 300.

[0254] The OIS guide ball 820 can guide the movement of the OIS moving unit in the x-axis and y-axis directions. The OIS guide ball 820 can guide the OIS carrier 300 to move in the x-axis and y-axis directions perpendicular to the optical axis direction relative to the AF carrier 210. That is, the OIS guide ball 820 can guide the OIS carrier 300 to move in the x-axis and y-axis directions. In other words, the OIS guide ball 820 can guide movement in both the x-axis and y-axis directions. For reference, compared to a comparative example in which a ball guiding the x-axis direction and a ball guiding the y-axis direction are separately provided, the size of the lens driving device 10 can be minimized in the first embodiment of the present invention in which a ball guiding the x-axis direction and a ball guiding the y-axis direction are integrated. In particular, the height of the lens driving device 10 in the optical axis direction can be reduced. As a result, the height protruding from the smartphone, i.e., the shoulder height, can be minimized. The OIS guide ball 820 can include multiple balls. The OIS guide ball 820 can include four balls.

[0255] Alternatively, OIS guide ball 820 may include separate balls for guiding x-axis direction drive and y-axis direction drive.

[0256] The lens driving device 10 may include an elastic member. The elastic member may be formed to press the OIS guide ball 820. The elastic member may be formed to guide both the OIS-x axis drive and the OIS-y axis drive using only the OIS guide ball 820. The elastic member may include a leaf spring. The elastic member may include a wire. The elastic member may have elasticity. The elastic member may be made of metal.

[0257] The first support member may be disposed between the fixed unit 100 and the AF movement unit 200. The first support member may guide the AF movement unit 200 to move in the optical axis direction. The second support member may be disposed between the AF movement unit 200 and the OIS movement unit 300. The second support member may guide the OIS movement unit 300 to move in a direction perpendicular to the optical axis direction. One side of the third support member may be coupled to the AF movement unit 200, and the other side may be coupled to the OIS movement unit 300.

[0258] The AF moving unit 200 may include a first elastic member. The OIS moving unit 300 may include a second elastic member. The third support member may connect the first elastic member and the second elastic member. The third support member may include a wire 850.

[0259] The lens driving device 10 may include an upper elastic member 830. The upper elastic member 830 may be an "upper spring." The upper elastic member 830 may be a leaf spring. The upper elastic member 830 may have elasticity. The upper elastic member 830 may be disposed on the OIS moving section. The upper elastic member 830 may be disposed on an upper surface of the OIS moving section. The upper elastic member 830 may be disposed on an upper surface of the OIS carrier 300. The upper elastic member 830 may be disposed on the OIS carrier 300. The upper elastic member 830 may be disposed on the OIS carrier 300. The upper elastic member 830 may be disposed on top of the OIS carrier 300. The upper elastic member 830 may be disposed perpendicular to the optical axis.

[0260] The upper elastic member 830 may include an inner portion 831. The inner portion 831 may be coupled to the OIS moving portion.

[0261] The upper elastic member 830 can include an outer portion 832. The outer portion 832 can be coupled to a wire 850.

[0262] The upper elastic member 830 may include a connecting portion 833. The connecting portion 833 may connect the inner portion 831 and the outer portion 832. The connecting portion 833 may elastically connect the inner portion 831 and the outer portion 832. The connecting portion 833 may have elasticity. The connecting portion 833 may be an elastic portion.

[0263] The inner portion 831 of the upper elastic member 830 may be positioned lower than the outer portion 832. As shown in FIG. 29, the inner portion 831 of the upper elastic member 830 may be positioned lower than the outer portion 832 by a first distance (see FIG. 29(a)). The reason the inner portion 831 of the upper elastic member 830 is positioned lower than the outer portion 832 may be due to the pressure of the preload member 230. Through this structure, the OIS guide ball 820 can be maintained in contact with the preload member 230 of the AF carrier 210 and the OIS carrier 300.

[0264] The lens driving device 10 may include a lower elastic member 840. The lower elastic member 840 may be a "housing lower terminal" or a "housing lower plate." The lower elastic member 840 may be a leaf spring. The lower elastic member 840 may have elasticity. The lower elastic member 840 may be disposed on the AF movement unit 200. The lower elastic member 840 may be disposed on the lower surface of the AF movement unit 200. The lower elastic member 840 may be disposed on the lower surface of the AF carrier 210. The lower elastic member 840 may be disposed on the AF carrier 210. The lower elastic member 840 may be disposed below the AF carrier 210. The lower elastic member 840 may be disposed perpendicular to the optical axis.

[0265] The lower elastic member 840 may include an outer portion 841. The outer portion 841 may be coupled to the AF moving portion 200.

[0266] The lower elastic member 840 may include an inner portion 842. The inner portion 842 may be coupled to a wire 850.

[0267] The lower elastic member 840 may include a connecting portion 843. The connecting portion 843 may connect the outer portion 841 and the inner portion 842. The connecting portion 843 may elastically connect the outer portion 841 and the inner portion 842. The connecting portion 843 may have elasticity. The connecting portion 843 may be an elastic portion.

[0268] The lens driving device 10 may include a wire 850. The wire 850 may be a "side elastic member." The wire 850 may be a wire. The wire 850 may be a wire spring. The wire 850 may be a suspension wire. The wire 850 may have elasticity. The wire 850 may connect the upper elastic member 830 and the lower elastic member 840. The wire 850 may elastically connect the upper elastic member 830 and the lower elastic member 840. The wire 850 may be arranged parallel to the optical axis. The wire 850 may be arranged in the optical axis direction.

[0269] 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.

[0270] Figures 29 to 31 are diagrams illustrating autofocus driving of the lens driving device according to the first embodiment of the present invention. Figure 29 is a cross-sectional view illustrating the state of the moving part in the initial state when no current is applied to the AF coil, Figure 30 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, and Figure 31 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.

[0271] 29, the moving unit can be disposed at a position spaced apart from both the upper plate 121 of the cover 120 and the base 110 from an initial position where no current is applied to the AF coil 420. In this case, the moving unit may be the AF moving unit 200. Furthermore, the moving unit may include the AF moving unit 200 and an OIS moving unit.

[0272] When a forward current is applied to the AF coil 420, the AF coil 420 can move upward in the optical axis direction due to electromagnetic interaction between the AF coil 420 and the AF magnet 410 (see A in FIG. 30). At this time, the AF carrier 210 can move upward in the optical axis direction together with the AF coil 420. Furthermore, the OIS carrier 300 and the lens can move upward in the optical axis direction together with the AF carrier 210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0273] When a reverse current is applied to the AF coil 420, the AF coil 420 can move downward in the optical axis direction due to electromagnetic interaction between the AF coil 420 and the AF magnet 410 (see B in FIG. 31). At this time, the AF carrier 210 can move downward in the optical axis direction together with the AF coil 420. Furthermore, the OIS carrier 300 and the lens can move downward in the optical axis direction together with the AF carrier 210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0274] Meanwhile, during the movement of AF coil 420, AF sensor 430 moves together with AF coil 420 and can sense the amount of movement and position of the lens in the optical axis direction by sensing the strength of the magnetic field of AF magnet 410. The amount of movement and position of the lens in the optical axis direction sensed by AF sensor 430 can be used for autofocus feedback control.

[0275] 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.

[0276] Figures 32 to 34 are diagrams illustrating the image stabilization drive of the lens driving device according to the first embodiment of the present invention. Figure 32 is a cross-sectional view illustrating the state of the OIS moving unit in the initial state when no current is applied to the OIS-x coil and the OIS-y coil, Figure 33 is a cross-sectional view illustrating the state when current is applied to the OIS-x coil and the OIS moving unit has moved in the x-axis direction perpendicular to the optical axis, and Figure 34 is a cross-sectional view illustrating the state when current is applied to the OIS-y coil and the OIS moving unit has moved in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0277] 32, the moving part may be placed in an initial position where no current is applied to the OIS-x coil 520 and the OIS-y coil 620. At this time, the moving part may be the OIS moving part.

[0278] When a current is applied to the OIS-x coil 520, electromagnetic interaction between the OIS-x coil 520 and the OIS-x magnet 510 causes the OIS-x magnet 510 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 33 ). At this time, the OIS carrier 300 moves in the x-axis direction together with the OIS-x magnet 510. Furthermore, the lens moves in the x-axis direction together with the OIS carrier 300. More specifically, when a forward current is applied to the OIS-x coil 520, the OIS-x magnet 510, OIS carrier 300, and lens move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 520, the OIS-x magnet 510, OIS carrier 300, and lens move in the other direction on the x-axis.

[0279] When a current is applied to the OIS-y coil 620, electromagnetic interaction between the OIS-y coil 620 and the OIS-y magnet 610 causes the OIS-y magnet 610 to move in the y-axis direction, which is perpendicular to the optical axis (see B in FIG. 34). At this time, the OIS carrier 300 can move in the y-axis direction together with the OIS-y magnet 610. Furthermore, the lens can move in the y-axis direction together with the OIS carrier 300. More specifically, when a forward current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS 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 620, the OIS-y magnet 610, the OIS carrier 300, and the lens can move in the other direction on the y-axis.

[0280] Meanwhile, the OIS-x sensor 530 senses the strength of the magnetic field of the OIS-x magnet 510 and can sense the amount of movement and position of the OIS-x magnet 510. The amount of movement and position sensed by the OIS-x sensor 530 can be used for x-axis direction image stabilization feedback control. The OIS-y sensor 630 senses the strength of the magnetic field of the OIS-y magnet 610 and can sense the amount of movement and position of the OIS-y magnet 610. The amount of movement and position sensed by the OIS-y sensor 630 can be used for y-axis direction image stabilization feedback control.

[0281] A camera device according to a first embodiment of the present invention will be described below with reference to the drawings.

[0282] FIG. 35 is an exploded perspective view of the camera device according to the first embodiment of the present invention.

[0283] The camera device 10A may include a camera module.

[0284] 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 the OIS carrier 300 of the lens driving device 10. The lens module 20 may be coupled to the OIS carrier 300 by screw coupling and / or adhesive. The lens module 20 may move integrally with the OIS carrier 300.

[0285] The camera device 10A may include a filter 30. The filter 30 may serve to block light of a specific frequency band, which is transmitted through the lens module 20, from entering the image sensor 60. The filter 30 may be disposed parallel to the xy plane. The filter 30 may be disposed between the lens module 20 and the image sensor 60. The filter 30 may be disposed on the sensor base 40. Alternatively, the filter 30 may be disposed on the base 110. The filter 30 may include an infrared filter. The infrared filter may block light in the infrared region from entering the image sensor 60.

[0286] 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 at least one of epoxy, a heat-curing adhesive, and an ultraviolet-curing adhesive.

[0287] 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 have various circuits, elements, a control unit, etc. for converting an image formed on the image sensor 60 into an electrical signal and transmitting the signal to an external device.

[0288] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured to receive light that has passed through the lens and the filter 30 and form an image. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. For example, the image sensor 60 may be attached to the printed circuit board 50 using surface mounting technology (SMT). For another example, the image sensor 60 may be attached to the printed circuit board 50 using flip chip technology. The image sensor 60 may be disposed so that its optical axis coincides with that of a lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens may be aligned. The image sensor 60 may convert light irradiated onto an effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 may be any of a charge coupled device (CCD), a metal oxide semi-conductor (MOS), a CPD, and a CID.

[0289] 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.

[0290] The camera device 10A may include a control unit 80. The control unit 80 may be disposed on the printed circuit board 50. The control unit 80 may be electrically connected to the coils 330 of the lens driving device 10. The control unit 80 may individually control the direction, strength, amplitude, etc. of the current supplied to the coils 330. The control unit 80 may control the lens driving device 10 to perform an autofocus function and / or an image stabilization function. Furthermore, the control unit 80 may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device 10.

[0291] 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.

[0292] An optical apparatus according to a first embodiment of the present invention will now be described with reference to the drawings.

[0293] FIG. 36 is a perspective view of the optical device according to the first embodiment of the present invention, and FIG. 37 is a perspective view of the optical device according to a modified example.

[0294] 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.

[0295] 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. 36, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 37, the camera device 10A-1 may have triple cameras arranged horizontally.

[0296] 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.

[0297] 38 is a perspective view of a lens driving device according to a second embodiment of the present invention, FIG. 39 is a cross-sectional view taken along line AA in FIG. 38, FIG. 40 is a cross-sectional view taken along line BB in FIG. 38, FIG. 41 is a cross-sectional view taken along line CC in FIG. 38, FIG. 42 is a cross-sectional view taken along line DD in FIG. 38, FIG. 43 is an exploded perspective view of the lens driving device according to the second embodiment of the present invention, FIG. 44 is an exploded perspective view of FIG. 43 taken from another direction, and FIG. 45 is a perspective view of the lens driving device according to the second embodiment of the present invention with the cover omitted. 46 is a perspective view of FIG. 45 as seen from another direction, FIG. 47 is a perspective view illustrating a fixed portion and related components of a lens driving device according to a second embodiment of the present invention, FIG. 48 is a perspective view of FIG. 47 as seen from another direction, FIG. 49 is a perspective view illustrating a moving portion and related components of a lens driving device according to a second embodiment of the present invention, FIG. 50 is a perspective view of FIG. 49 as seen from another direction, FIG. 51 is a cross-sectional perspective view illustrating a driving portion and related components of a lens driving device according to a second embodiment of the present invention, and FIG. 52 is a cross-sectional perspective view of the lens driving device according to the second embodiment of the present invention. 53 is a plan view of a lens driving device according to a second embodiment of the invention with the cover omitted, FIG. 54 is a cross-sectional perspective view illustrating the ball and related configuration of the lens driving device according to the second embodiment of the invention, FIG. 55 is a perspective view illustrating the ball and related configuration of the lens driving device according to the second embodiment of the invention, FIG. 56 is a perspective view illustrating the ball accommodating structure of the base of the lens driving device according to the second embodiment of the invention, and FIG. 57 is a cross-sectional perspective view illustrating the ball accommodating structure of the base of the lens driving device according to the second embodiment of the invention, 6 is a perspective view illustrating the state in which the ball plate member, elastic member, and reinforcing member are arranged in FIG. 58 is a perspective view of FIG. 57 seen from another direction, FIG. 59 is a perspective view illustrating the moving part and ball of the lens driving device according to the second embodiment of the present invention, FIG. 60 is a perspective view of FIG. 59 seen from another direction, and FIG. 61(a) is a diagram comparing the heights of the ball and the pressure point when the moving part has moved upward, and (b) is a diagram comparing the heights of the ball and the pressure point when the moving part has moved downward.

[0298] 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 AF actuator.

[0299] 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 1200 when the moving portion 1200 moves. The moving portion 1200 can move relative to the fixed portion 1100.

[0300] The lens driving device 1010 may include a base 1110. The fixing part 1100 may include a base 1110. The base 1110 may be disposed below a holder 1210. The base 1110 may be coupled to a cover 1120. The holder 1210 may be disposed on the base 1110. The holder 1210 may be disposed on a lower plate portion of the base 1110. The holder 1210 may be disposed within the base 1110. The holder 1210 may be disposed within an outer wall portion 1112 of the base 1110.

[0301] The base 1110 may include a lower plate portion. The lower plate portion of the base 1110 may support the lower surface of the moving portion 1200. The lower plate portion of the base 1110 may support the lower surface of the holder 1210.

[0302] The base 1110 may include a post 1111. The post 1111 may extend from the upper surface of the bottom plate.

[0303] The base 1110 may include an inner groove 1111-1. The pillar portion 1111 may include an inner groove 1111-1. The inner groove 1111-1 may be formed on the pillar portion 1111. The inner groove 1111-1 may be a "ball receiving groove." A ball 1400 may be disposed in the inner groove 1111-1. An inner ball 1410 may be disposed in the inner groove 1111-1. The inner groove 1111-1 may be in direct contact with the ball 1400. The inner groove 1111-1 may be disposed in the optical axis direction. The inner groove 1111-1 may include multiple grooves. The inner groove 1111-1 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally to each other with respect to the optical axis.

[0304] The base 1110 may include an outer wall portion 1112. The outer wall portion 1112 may be a "side portion." The outer wall portion 1112 may be a "side panel." The outer wall portion 1112 may be a "side wall." The outer wall portion 1112 of the base 1110 may extend from the upper surface of the lower panel portion.

[0305] The base 1110 may include an outer groove 1112-1. The outer wall portion 1112 may include an outer groove 1112-1. The outer groove 1112-1 may be formed to face the inner groove 1111-1. The outer groove 1112-1 may be arranged to face the inner groove 1111-1. The outer groove 1112-1 may be a "ball receiving groove." A ball 1400 may be arranged in the outer groove 1112-1. An outer ball 1420 may be arranged in the outer groove 1112-1. The outer groove 1112-1 may be in direct contact with the ball 1400. The outer groove 1112-1 may be arranged in the optical axis direction. The outer groove 1112-1 may include multiple grooves. The outer groove 1112-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis. The outer groove 1112-1 may be disposed on the opposite side of the inner groove 1111-1. The outer groove 1112-1 may be formed in a shape corresponding to the inner groove 1111-1. The outer groove 1112-1 and the inner groove 1111-1 may be formed to have the same length in the optical axis direction.

[0306] The base 1110 may include a protrusion. The protrusion may protrude outward. The connecting portion 1623 of the outer substrate 1620 may be disposed on the upper side of the protrusion. A groove may be formed in the protrusion to prevent interference even when the connecting portion 1623 of the outer substrate 1620 moves.

[0307] The base 1110 may include a step. The step may be formed at a lower end of an outer surface of the base 1110. The step may protrude from the outer surface of the base 1110. A side plate 1122 of the cover 1120 may be disposed on the step of the base 1110.

[0308] 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 house the holder 1210 inside. The cover 1120 may be a shielding member. The cover 1120 may be a shielding can.

[0309] The cover 1120 may include an upper plate 1121. The upper plate 1121 may be disposed on the moving part 1200. The upward movement of the moving part 1200 may be restricted by the moving part 1200 contacting the upper plate 1121. The upper plate 1121 may include a hole through which light passes.

[0310] 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.

[0311] The lens driving device 1010 may include a moving unit 1200. The moving unit 1200 may be disposed on the fixed unit 1100. The moving unit 1200 may be disposed within the fixed unit 1100. The moving unit 1200 may be disposed on the fixed unit 1100 so as to be movable relative to the fixed unit 1100. The moving unit 1200 may be moved with respect to the fixed unit 1100 by the driving unit 1300. The moving unit 1200 may be moved in the optical axis direction relative to the fixed unit 1100 by the driving unit 1300. The moving unit 1200 may move in the optical axis direction. The moving unit 1200 may move during AF driving. A lens may be coupled to the moving unit 1200.

[0312] The lens driving device 1010 may include a holder 1210. The moving unit 1200 may include a holder 1210. The holder 1210 may be an "AF holder". The holder 1210 may be a "bobbin". The holder 1210 may be a "carrier". The holder 1210 may be disposed in the base 1110. The holder 1210 may be disposed on the base 1110. The holder 1210 may be disposed in the cover 1120. The holder 1210 may be disposed so as to be movable. The holder 1210 may be disposed so as to be movable in the optical axis direction.

[0313] The holder 1210 may include an inner groove 1211. The inner groove 1211 may be a "ball receiving groove." A ball 1400 may be disposed in the inner groove 1211. An inner ball 1410 may be disposed in the inner groove 1211. The inner groove 1211 may be in direct contact with the ball 1400. The inner groove 1211 may be disposed in the optical axis direction. The inner groove 1211 may guide the ball 1400 to move in the optical axis direction. The inner groove 1211 may include a plurality of grooves. The inner groove 1211 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally to each other with respect to the optical axis.

[0314] The holder 1210 may include an outer groove 1212. The outer groove 1212 may be a "ball receiving groove." A ball 1400 may be disposed in the outer groove 1212. An outer ball 1420 may be disposed in the outer groove 1212. The outer groove 1212 may be in direct contact with the ball 1400. The outer groove 1212 may be disposed in the optical axis direction. The outer groove 1212 may guide the ball 1400 to move in the optical axis direction. The outer groove 1212 may include a plurality of grooves. The outer groove 1212 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally relative to each other with respect to the optical axis. The outer groove 1212 may be disposed opposite the inner groove 1211. The outer groove 1212 may be formed in a shape corresponding to that of the inner groove 1211. The outer groove 1212 and the inner groove 1211 may be formed to have the same length in the optical axis direction.

[0315] The holder 1210 may include a protrusion 1213. The protrusion 1213 may be formed on an outer surface of the holder 1210. The protrusion 1213 may protrude outward from the holder 1210. At least a portion of the connecting portion 1623 of the outer substrate 1620 may be disposed on an upper surface of the protrusion 1213. At least a portion of the coupling portion 1622 of the outer substrate 1620 may be disposed on an upper surface of the protrusion 1213.

[0316] The lens driving device 1010 may include a driving unit 1300. The driving unit 1300 may move the moving unit 1200 in the optical axis direction. The driving unit 1300 may move the holder 1210 in the optical axis direction. The driving unit 1300 may move the holder 1210 in the optical axis direction through electromagnetic force. The driving unit 1300 may include a coil 1310 and a magnet 1320. The coil 1310 and the magnet 1320 may move the moving unit 1200 in the optical axis direction.

[0317] The lens driving device 1010 may include a coil 1310. The driving unit 1300 may include a coil 1310. The coil 1310 may interact with a magnet 1320. The coil 1310 may face the magnet 1320. The coil 1310 may be disposed at a position corresponding to the magnet 1320. The coil 1310 may be coupled to the magnet 1320 in a direction perpendicular to the optical axis. The coil 1310 may be disposed on the inner substrate 1610. The coil 1310 may be disposed on a side plate portion 1612 of the inner substrate 1610. The coil 1310 may be disposed on the holder 1210. The coil 1310 may be disposed on the holder 1210 through the inner substrate 1610. The coil 1310 may move together with the holder 1210.

[0318] In the second embodiment of the present invention, the coil 1310 can move in the optical axis direction. The coil 1310 can move in the optical axis direction through interaction with the magnet 1320. The coil 1310 can move together with the moving part 1200. The coil 1310 can move in the optical axis direction together with the moving part 1200. In the AF driving process, the coil 1310 can move in the optical axis direction together with the moving part 1200. The coil 1310 can be disposed on the moving part 1200. The coil 1310 can be fixed to the moving part 1200. The coil 1310 can be coupled to the moving part 1200.

[0319] The lens driving device 1010 may include a magnet 1320. The driving unit 1300 may include the magnet 1320. The magnet 1320 may be a permanent magnet. The magnet 1320 may be disposed in the fixed unit 1100. The magnet 1320 may be disposed in the base 1110. The magnet 1320 may be disposed in the cover 1120. The magnet 1320 may be disposed on a side plate 1122 of the cover 1120. The magnet 1320 may be disposed on an outer surface of the base 1110. The magnet 1320 may be disposed on an inner surface of the base 1110. The magnet 1320 may be disposed on an outer wall 1112 of the base 1110. The magnet 1320 may be fixed to the base 1110. The magnet 1320 may be coupled to the base 1110. The magnet 1320 may be attached to the base 1110 with an adhesive. The magnet 1320 may be disposed within the cover 1120. The magnet 1320 may interact with the coil 1310. The magnet 1320 may electromagnetically interact with the coil 1310. The magnet 1320 may be disposed at a position corresponding to the coil 1310. The magnet 1320 may face the coil 1310. The magnet 1320 may face the coil 1310. The magnet 1320 may overlap with the coil 1310 in a direction perpendicular to the optical axis. The magnet 1320 may overlap with the coil 1310 in the x-axis direction. Alternatively, the magnet 1320 may overlap with the coil 1310 in the y-axis direction.

[0320] The magnet 1320 may be a four-pole magnet. The magnet 1320 may include a four-pole magnetized magnet. The magnet 1320 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 the optical axis direction. The first magnet portion and the second magnet portion may be spaced apart in the optical axis direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0321] The lens driving device 1010 may include a sensor 1330. The driving unit 1300 may include the sensor 1330. The sensor 1330 may be a Hall sensor. The sensor 1330 may be disposed on the inner substrate 1610. The sensor 1330 may sense the magnet 1320. The sensor 1330 may sense movement of the magnet 1320. The amount of movement or position of the magnet 1320 sensed by the sensor 1330 may be used for feedback of the autofocus driving. The sensor 1330 may be disposed on the moving unit 1200. The sensor 1330 may be disposed on the holder 1210. The sensor 1330 may be disposed on the holder 1210 via the inner substrate 1610. The sensor 1330 may move together with the moving unit 1200.

[0322] The sensor 1330 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 coil 1310. The driver IC may supply current to the coil 1310.

[0323] The sensor 1330 can be disposed within the coil 1310. The sensor 1330 can be coupled to the neutral part of the magnet 1320 in a direction perpendicular to the optical axis. Alternatively, the sensor 1330 can be disposed outside the coil 1310.

[0324] The lens driving device 1010 may include a yoke 1340. The yoke 1340 may be disposed at a position corresponding to the magnet 1320. The yoke 1340 may be disposed on the magnet 1320. The yoke 1340 may be disposed between the magnet 1320 and the side plate 1122 of the cover 1120. The yoke 1340 may be disposed on the outer surface of the magnet 1320. The inner surface of the magnet 1320 may face the coil 1310. Thus, the yoke 1340 may minimize leakage magnetic flux of the magnet 1320 and increase the electromagnetic interaction force between the magnet 1320 and the coil 1310.

[0325] The lens driving device 1010 may include a guide member. The guide member may include a ball 1400. The guide member may include a shaft. 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 1200 relative to the fixed part 1100 in a specific direction. In a modified example, the ball 1400 of the second embodiment of the present invention may be replaced with a shaft. In this case, tilt of the moving part 1200 may be prevented.

[0326] The lens driving device 1010 may include a ball 1400. The ball 1400 may guide the movement of the moving part 1200 relative to the fixed part 1100 in the optical axis direction. The ball 1400 may guide the movement of the holder 1210 relative to the base 1110 in the optical axis direction. The ball 1400 may be disposed between the fixed part 1100 and the moving part 1200. The ball 1400 may be disposed between the base 1110 and the holder 1210. The ball 1400 may be disposed between the base 1110 and the holder 1210 in the x direction. Alternatively, the ball 1400 may be disposed between the base 1110 and the holder 1210 in the y direction. The ball 1400 may be disposed in a groove in the base 1110. The ball 1400 may be disposed in a groove in the holder 1210. The ball 1400 may be spherical. The ball 1400 may be made of metal. The surface of the ball 1400 may be coated with grease.

[0327] The balls 1400 may be disposed at a first corner of the base 1110. The balls 1400 may be disposed at a second corner diagonally opposite the first corner of the base 1110. The balls 1400 may be disposed at each of the first and second corners of the base 1110. The first and second corner areas of the fixing part 1100 may be disposed diagonally opposite each other with respect to the optical axis. The balls 1400 may be disposed at each of the first and second corner areas of the fixing part 1100. Two sets of balls 1400 may be disposed at each of the first and second corners of the base 1110. In this case, one set may include four balls. The two sets may be disposed on opposite sides of the pillar portion of the holder 1210.

[0328] The ball 1400 may include an inner ball 1410. The inner ball 1410 may be disposed on a pillar portion 1111 of the base 1110. The inner ball 1410 may be disposed on an inner groove 1111-1 of the base 1110. The inner ball 1410 may be disposed on an inner groove 1211 of the holder 1210. The inner ball 1410 may be disposed on an inner groove 1211 of the moving part 1200. The inner ball 1410 may be disposed on the inner groove 1111-1 of the base 1110 and the inner groove 1211 of the holder 1210. The inner ball 1410 may be disposed between the inner groove 1111-1 of the base 1110 and the inner groove 1211 of the holder 1210. The inner ball 1410 may be disposed between the moving part 1200 and the pillar portion 1111 of the fixed part 1100.

[0329] The ball 1400 may include an outer ball 1420. The outer ball 1420 may be disposed on the outer wall portion 1112 of the base 1110. The outer ball 1420 may be disposed in the outer groove 1112-1 of the base 1110. The outer ball 1420 may be disposed in the outer groove 1212 of the holder 1210. The outer ball 1420 may be disposed in the outer groove 1112-1 of the base 1110 and the outer groove 1212 of the holder 1210. The outer ball 1420 may be disposed between the outer groove 1112-1 of the base 1110 and the outer groove 1212 of the holder 1210. The outer ball 1420 may be disposed between the outer groove 1112-1 of the fixed portion 1100 and the outer groove 1212 of the moving portion 1200. The outer ball 1420 can be disposed between the moving part 1200 and the outer wall part 1112 of the fixed part 1100 .

[0330] The inner balls 1410 may include a plurality of inner balls 1410. The plurality of inner balls 1410 may be arranged in the optical axis direction. The inner balls 1410 may include four inner balls 1410. The inner balls 1410 may include first to fourth inner balls. Two of the four inner balls 1410 may have a large diameter, and the remaining two may have a small diameter. The two balls with a large diameter may be arranged at the top and bottom. That is, two balls with a small diameter may be arranged between two balls with a large diameter.

[0331] The inner ball 1410 may include an inner uppermost ball 1411. The inner uppermost ball 1411 may be disposed at the highest position among the inner balls 1410. The inner uppermost ball 1411 may be disposed at a position among the inner balls 1410 closest to the upper plate 1121 of the cover 1120. The inner ball 1410 may include an inner lowermost ball 1412. The inner lowermost ball 1412 may be disposed at the lowest position among the inner balls 1410. The inner lowermost ball 1412 may be disposed at a position among the inner balls 1410 closest to the lower plate portion of the base 1110. The plurality of inner balls 1410 may include balls having a smaller diameter than the inner uppermost ball 1411 and the inner lowermost ball 1412. The plurality of inner balls 1410 may include balls disposed between the inner uppermost ball 1411 and the inner lowermost ball 1412.

[0332] The outer balls 1420 may include a plurality of outer balls 1420. The plurality of outer balls 1420 may be arranged in the optical axis direction. The outer balls 1420 may include four outer balls 1420. The outer balls 1420 may include first to fourth outer balls. Two of the four outer balls 1420 may have large diameters and the remaining two may have small diameters. The two balls with large diameters may be arranged at the top and bottom. That is, two balls with small diameters may be arranged between two balls with large diameters.

[0333] The outer ball 1420 may include an outer top ball 1421. The outer top ball 1421 may be disposed at the highest position among the outer balls 1420. The outer top ball 1421 may be disposed at a position of the outer balls 1420 closest to the upper plate 1121 of the cover 1120. The outer ball 1420 may include an outer bottom ball 1422. The outer bottom ball 1422 may be disposed at the lowest position among the outer balls 1420. The outer bottom ball 1422 may be disposed at a position of the outer balls 1420 closest to the lower plate portion of the base 1110. The plurality of outer balls 1420 may include balls having a smaller diameter than the outer top ball 1421 and the outer bottom ball 1422. The plurality of outer balls 1420 may include balls disposed between the outer top ball 1421 and the outer bottom ball 1422.

[0334] The height of the point where the elastic member 1520 presses the plate member 1510 may be lower than the height of the lowermost ball among the inner uppermost ball 1411 and the outer uppermost ball 1421, and higher than the height of the highermost ball among the inner lowermost ball 1412 and the outer lowermost ball 1422. More specifically, when the moving part 1200 moves upward as shown in (a) of Figure 61, the height (b) of the point where the elastic member 1520 presses the plate member 1510 may be higher than the height (a) of the highermost ball among the inner lowermost ball 1422 and the outer lowermost ball 1412. There may be a gap (c) in the height between the two points. 61(b), the height (e) of the point where the elastic member 1520 presses the plate member 1510 may be lower than the height (d) of the lower ball among the inner topmost ball 1421 and the outer topmost ball 1411. A gap (f) may exist between the heights of the two points. This can prevent or minimize the generation of a moment caused by the elastic member 1520 pressing the plate member 1510. In other words, it can prevent the plate member 1510 from tilting or coming off.

[0335] The lens driving device 1010 may include a pressure member. The pressure member may be a "ball pressure member." The pressure member can pressurize the ball 1400. The pressure member can be configured to pressurize the ball. The ball 1400 pressed by the pressure member can be sandwiched between the fixed part 1100 and the moving part 1200. The ball 1400 pressed by the pressure member can be sandwiched between the base 1110 and the holder 1210. The pressure member can bring the ball 1400 into contact with the fixed part 1100 and the moving part 1200. The pressure member can bring the ball 1400 into contact with the base 1110 and the holder 1210.

[0336] The lens driving device 1010 may include a plate member 1510. The pressing member may include the plate member 1510. The plate member 1510 may be disposed on the ball 1400. The plate member 1510 may be disposed on the elastic member 1520. The plate member 1510 may be disposed on the base 1110. The plate member 1510 may be disposed between the elastic member 1520 and the ball 1400. The plate member 1510 may press the ball 1400 toward the holder 1210 by the elastic member 1520. The plate member 1510 may be disposed between the ball 1400 and the fixed part 1100. The plate member 1510 may be disposed between the inner ball 1410 and the post portion 1111 of the fixed part 1100.

[0337] The lens driving device 1010 may include an elastic member 1520. The pressure member may include the elastic member 1520. The elastic member 1520 may be a spring. The elastic member 1520 may be a tapered spring. The elastic member 1520 may be disposed on the fixed part 1100. The elastic member 1520 may press the ball 1400 toward the moving part 1200. The elastic member 1520 may press the plate member 1510 toward the ball 1400. The elastic member 1520 may be disposed between the plate member 1510 and the fixed part 1100. The elastic member 1520 may push the plate member 1510 against the fixed part 1100. The elastic member 1520 may press the plate member 1510 in the opposite direction to the fixed part 1100. The elastic member 1520 may be disposed between the plate member 1510 and the post part 1111 of the fixed part 1100. The elastic member 1520 can be disposed in the inner groove 1111-1 of the fixing part 1100.

[0338] Alternatively, the elastic member 1520 may be disposed in the moving part 1200. In this case, the elastic member 1520 may press the ball 1400 toward the fixed part 1100. The elastic member 1520 may be disposed in one of the fixed part 1100 and the moving part 1200 and may press the ball 1400 toward the other of the fixed part 1100 and the moving part 1200. The elastic member 1520 may press the plate member 1510. The elastic member 1520 may be disposed between the plate member 1510 and the base 1110. The elastic member 1520 may be disposed between the ball 1400 and the base 1110. The elastic member 1520 may be disposed in the base 1110. The elastic member 1520 may be disposed in the inner groove 1111-1 of the base 1110. The elastic member 1520 may press the ball 1400 toward the holder 1210. This allows the ball 1400 to maintain contact with the plate member 1510 and the holder 1210.

[0339] The elastic member 1520 may include a folded portion. The folded portion may include a folded shape. The folded portion may include multiple folded portions. The folded portion may include three folded portions. The elastic member 1520 may be folded at least three times. The elastic member 1520 may include an upper folded portion 1521. The elastic member 1520 may include a lower folded portion 1522. The elastic member 1520 may include a connecting folded portion 1523. The connecting folded portion 1523 may be disposed between the upper folded portion 1521 and the lower folded portion 1522. The upper folded portion 1521 may form an obtuse angle. The lower folded portion 1522 may form an obtuse angle. The connecting folded portion 1523 may form an obtuse angle. The upper folded portion 1521 may be disposed on the fixing portion 1100. The lower folded portion 1522 may be disposed on the fixing portion 1100. The connecting bent portion 1523 can be disposed on the plate member 1510. Through this structure, the elastic member 1520 can push the plate member 1510 against the fixed portion 1100. The connecting bent portion 1523 can contact the plate member 1510 and press the plate member 1510 toward the ball 1400.

[0340] The lens driving device 1010 may include a substrate 1600. The substrate 1600 may include a flexible printed circuit board (FPCB). The substrate 1600 may be electrically connected to the coil 1310. The substrate 1600 may be electrically connected to the sensor 1330.

[0341] The lens driving device 1010 may include an inner substrate 1610. The inner substrate 1610 may be electrically connected to the coil 1310. The inner substrate 1610 may be electrically connected to the sensor 1330. The inner substrate 1610 may be disposed in the moving part 1200. The inner substrate 1610 may be disposed in the holder 1210. The inner substrate 1610 may be fixed to the holder 1210. The inner substrate 1610 may be coupled to the holder 1210. The inner substrate 1610 may be adhered to the holder 1210 with an adhesive. The inner substrate 1610 may include a flexible substrate. The inner substrate 1610 may include a flexible printed circuit board (FPCB). The inner substrate 1610 may include an elastic portion. The inner substrate 1610 may include an elastic member.

[0342] The inner substrate 1610 may include an upper plate portion 1611. The upper plate portion 1611 may be disposed on the moving part 1200. The upper plate portion 1611 may be disposed on an upper surface of the moving part 1200. The upper plate portion 1611 may be disposed on the holder 1210. The upper plate portion 1611 may be disposed on an upper surface of the holder 1210. The upper plate portion 1611 may be disposed between the holder 1210 and the upper plate 1121 of the cover 1120.

[0343] The inner substrate 1610 may include a terminal 1611-1. The terminal 1611-1 may be disposed on the upper plate portion 1611 of the inner substrate 1610. The terminal 1611-1 may be electrically connected to the coil 1310. The terminal 1611-1 may be electrically connected to the sensor 1330. The terminal 1611-1 of the inner substrate 1610 may be electrically connected to the terminal 1622-1 of the outer substrate 1620. The terminal 1611-1 of the inner substrate 1610 may be coupled to the terminal 1622-1 of the outer substrate 1620 via an electrically conductive member. The terminal 1611-1 of the inner substrate 1610 may be coupled to the terminal 1622-1 of the outer substrate 1620 via solder.

[0344] The inner substrate 1610 may include a side plate portion 1612. The side plate portion 1612 may be disposed on a side surface of the holder 1210. The side plate portion 1612 may be disposed on a side surface of the moving part 1200. The side plate portion 1612 may be disposed on an outer surface of the holder 1210. The side plate portion 1612 may be disposed on an outer surface of the moving part 1200. The side plate portion 1612 may extend from the upper plate portion 1611. The side plate portion 1612 may extend downward from the upper plate portion 1611. The side plate portion 1612 may be bent from the upper plate portion 1611. The coil 1310 may be disposed on the side plate portion 1612. The sensor 1330 may be disposed on the side plate portion 1612. The side plate portion 1612 may be disposed between the coil 1310 and the holder 1210.

[0345] Although the inner substrate 1610 has been described as being separate from the moving part 1200, the inner substrate 1610 may be included in the moving part 1200.

[0346] The lens driving device 1010 may include an outer substrate 1620. The outer substrate 1620 may be disposed on the base 1110. The outer substrate 1620 may be electrically connected to the coil 1310. The outer substrate 1620 may be electrically connected to the sensor 1330. The outer substrate 1620 may couple the holder 1210 to the base 1110. The outer substrate 1620 may elastically couple the holder 1210 to the base 1110. The outer substrate 1620 may support the holder 1210 movably relative to the base 1110. The outer substrate 1620 may guide the holder 1210 to move in the optical axis direction relative to the base 1110. The outer substrate 1620 may include a flexible substrate. The outer substrate 1620 may include a flexible printed circuit board (FPCB). The outer substrate 1620 may include an elastic portion. The outer substrate 1620 may include an elastic member. The outer substrate 1620 may be disposed on the fixed portion 1100.

[0347] The outer substrate 1620 may include an outer portion 1621. The outer portion 1621 may be disposed on the base 1110. The outer portion 1621 may be disposed on a side surface of the base 1110. The outer portion 1621 may be disposed on an outer surface of the base 1110.

[0348] The outer substrate 1620 may include a terminal 1621-1. An outer portion 1621 of the outer substrate 1620 may include a terminal 1621-1. The terminal 1621-1 may be electrically connected to the terminal 1622-1. The terminal 1621-1 may be disposed at a lower end of the base 1110. The terminal 1621-1 may be coupled to the printed circuit board 1050. The terminal 1621-1 may be coupled to the terminal of the printed circuit board 1050 via solder. The terminal 1621-1 may be coupled to the terminal of the printed circuit board 1050 via a conductive member. The terminal 1621-1 may be coupled to the terminal of the printed circuit board 1050. The terminal 1621-1 may be electrically connected to the terminal of the printed circuit board 1050.

[0349] The outer substrate 1620 can include a coupling portion 1622. The coupling portion 1622 can be coupled to the inner substrate 1610. The coupling portion 1622 can move with the inner substrate 1610. The coupling portion 1622 can move with the holder 1210.

[0350] The outer substrate 1620 may include a terminal 1622-1. The coupling portion 1622 of the outer substrate 1620 may include a terminal 1622-1. The terminal 1622-1 may be coupled to the terminal 1611-1 of the inner substrate 1610. The terminal 1622-1 of the outer substrate 1620 may be coupled to the terminal 1611-1 of the inner substrate 1610 via solder. The terminal 1622-1 of the outer substrate 1620 may be coupled to the terminal 1611-1 of the inner substrate 1610 via an electrically conductive member. The terminal 1622-1 of the outer substrate 1620 may be coupled to the terminal 1611-1 of the inner substrate 1610. The terminal 1622-1 of the outer substrate 1620 may be electrically connected to the terminal 1611-1 of the inner substrate 1610.

[0351] The outer substrate 1620 may include a connecting portion 1623. The connecting portion 1623 may be an "extension portion." The connecting portion 1623 may be a "leg portion." The connecting portion 1623 may extend from the outer portion 1621. The connecting portion 1623 may extend from the coupling portion 1622. The connecting portion 1623 may connect the outer portion 1621 and the coupling portion 1622. At least a portion of the connecting portion 1623 may move together with the holder 1210. At least a portion of the connecting portion 1623 may move together with the inner substrate 1610. At least a portion of the connecting portion 1623 may be disposed perpendicular to the optical axis direction. The connecting portion 1623 of the outer substrate 1620 may be coupled to the inner substrate 1610 so that the inner substrate 1610 is movable in the optical axis direction. The connecting portion 1623 may have a bent shape. The connecting portion 1623 may include a bent portion. The linking portion 1623 may include a U-shaped portion.

[0352] The lens driving device 1010 may include a reinforcing member 1710. The reinforcing member 1710 may be disposed on the base 1110. The reinforcing member 1710 may be disposed to reinforce the strength of the base 1110. The reinforcing member 1710 may prevent damage to the base 1110. The reinforcing member 1710 may prevent damage to the column portion 1111 of the base 1110. The reinforcing member 1710 may prevent damage to the outer wall portion 1112 of the base 1110. The reinforcing member 1710 may have elasticity. The reinforcing member 1710 may be made of metal. The reinforcing member 1710 may include a shape that is bent at least twice. In view of the above, the reinforcing member 1710 has the following features: JPEG2025531177000002.jpg1013 shape. The reinforcing member 1710 may be open on the inside.

[0353] The reinforcing member 1710 may include an inner portion 1711. The inner portion 1711 may be disposed on the opposite side of the inner groove 1111-1 of the post portion 1111 of the fixing portion 1100. The reinforcing member 1710 may include an outer portion 1712. The outer portion 1712 may be disposed on the opposite side of the outer groove 1112-1 of the outer wall portion 1112 of the fixing portion 1100. The reinforcing member 1710 may include a connecting portion 1713. The connecting portion 1713 may connect the inner portion 1711 and the outer portion 1712.

[0354] The lens driving device 1010 may include a cover 1720. The cover 1720 may be disposed on the ball 1400. The cover 1720 may overlap the ball 1400 in the optical axis direction. The cover 1720 may overlap the inner ball 1410 in the optical axis direction. The cover 1720 may overlap the outer ball 1420 in the optical axis direction. The cover 1720 may be disposed on the inner groove 1211 and the outer groove 1212 of the holder 1210 to prevent the ball 1400 from falling off upward.

[0355] The configuration of the lens driving device according to the modified example will be described below with reference to the drawings.

[0356] Figure 62 is an oblique view of a lens driving device according to a modified example, Figure 63 is a cross-sectional view seen from AA in Figure 62, Figure 64 is a cross-sectional view seen from BB in Figure 62, Figure 65 is an exploded oblique view of a lens driving device according to a modified example, Figure 66 is an exploded oblique view of Figure 65 seen from another direction, and Figure 67 is a plan view and a partially enlarged view of a lens driving device according to a modified example in which the cover has been omitted.

[0357] The lens driving device 110-1 according to the modified example may include a fixed portion 1100. The description of the fixed portion 1100 according to the second embodiment of the present invention can be inferentially applied to the description of the fixed portion 1100.

[0358] The lens driving device 110-1 according to the modified example may include a moving unit 1200. The description of the moving unit 1200 according to the second embodiment of the present invention may be inferentially applied to the description of the moving unit 1200.

[0359] The lens driving device 110-1 according to the modified example may include a driving unit. In the modified example, the positions of the coil and the magnet may be reversed compared to the second embodiment of the present invention. That is, in the modified example, the coil 1310-1 may be disposed in the fixed unit 1100, and the magnet 1320-1 may be disposed in the moving unit 1200.

[0360] The lens driving device 110-1 may include a coil 1310-1. The driving unit may include a coil 1310-1. The coil 1310-1 may be disposed on the substrate 1600-1. The coil 1310-1 may be disposed on the fixed unit 1100. The coil 1310-1 may be disposed on the base 1110. The coil 1310-1 may be disposed on the cover 1120. The coil 1310-1 may be disposed outside the magnet 1320-1. The coil 1310-1 may be disposed between the side plate 1122 of the cover 1120 and the magnet 1320-1. The coil 1310-1 may be fixed. The coil 1310-1 may be maintained in a fixed state even during AF driving.

[0361] The lens driving device 110-1 may include a magnet 1320-1. The driving unit may include the magnet 1320-1. The magnet 1320-1 may be disposed in the moving unit 1200. The magnet 1320-1 may be disposed in the holder 1210. The magnet 1320-1 may be disposed between the coil 1310-1 and the holder 1210. The magnet 1320-1 may be disposed inside the coil 1310-1. The magnet 1320-1 may overlap with the coil 1310-1 in a direction perpendicular to the optical axis. The magnet 1320-1 may face the coil 1310-1. The magnet 1320-1 may face the coil 1310-1. The magnet 1320-1 may be disposed at a position corresponding to the coil 1310-1. The magnet 1320-1 may interact with the coil 1310-1. The magnet 1320-1 can electromagnetically interact with the coil 1310-1. The magnet 1320-1 can move. The magnet 1320-1 can be arranged to be movable. The magnet 1320-1 can move during AF drive. The magnet 1320-1 can move together with the holder 1210. The magnet 1320-1 can move in the optical axis direction.

[0362] The lens driving device 110-1 may include a sensor 1330-1. The driving unit may include the sensor 1330-1. The sensor 1330-1 may sense the magnet 1320-1. The sensor 1330-1 may be disposed on the substrate 1600-1. The sensor 1330-1 may be disposed within the coil 1310-1. The sensor 1330-1 may be a Hall sensor. The amount of movement or position of the magnet 1320-1 sensed by the sensor 1330-1 may be used as feedback for autofocus driving.

[0363] The lens driving device 110-1 may include a yoke 1340-1. The driving unit may include a yoke 1340-1. The yoke 1340-1 may be disposed at a position corresponding to the magnet 1320-1. The yoke 1340-1 may be disposed on the magnet 1320-1. The yoke 1340-1 may be disposed between the magnet 1320 and the holder 1210. The yoke 1340-1 may be disposed on the inner surface of the magnet 1320-1. The outer surface of the magnet 1320-1 may face the coil 1310-1. Thus, the yoke 1340-1 may minimize leakage magnetic flux of the magnet 1320-1 and increase the electromagnetic interaction force between the magnet 1320-1 and the coil 1310-1.

[0364] The lens driving device 110-1 may include a substrate 1600-1. The substrate 1600-1 may be disposed on the fixed part 1100. The substrate 1600-1 may be disposed on the base 1110. The substrate 1600-1 may be disposed on the cover 1120. The substrate 1600-1 may be disposed on a side plate 1122 of the cover 1120. The substrate 1600-1 may be disposed on an inner surface of the side plate 1122 of the cover 1120. The substrate 1600-1 may be disposed on an outer surface of the side plate 1122 of the cover 1120. The substrate 1600-1 may be disposed parallel to the optical axis. The coil 1310-1 and the sensor 1330-1 may be disposed on the substrate 1600-1. The substrate 1600-1 may include a printed circuit board. The substrate 1600-1 may include a flexible printed circuit board (FPCB).

[0365] The lens driving device 110-1 according to the modified example may include a ball 1400. The description of the ball 1400 in the second embodiment of the present invention may be inferentially applied to the description of the ball 1400.

[0366] The second embodiment and its modifications of the present invention have the advantage of eliminating centering force in the optical axis direction of the yoke, compared to the comparative example in which a tapered spring is used to pressurize the balls through the attractive force between the yoke and the magnet. Furthermore, by arranging the balls 1400 diagonally, it is possible to prevent rotation or tilt of the moving part 1200 and ensure the necessary adhesion. However, as a modification, two sets of balls 1400 may be arranged on one side of the fixed part 1100, rather than diagonally. As another modification, the balls 1400 may be used as a shaft structure to minimize tilt of the module, i.e., the moving part 1200.

[0367] 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.

[0368] Fig. 68 to Fig. 70 are diagrams illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention. Fig. 68 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. 69 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. 70 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.

[0369] As shown in FIG. 68, the moving part 1200 can be positioned at a position separated from both the upper plate 1121 of the cover 1120 and the base 1110 from the initial position where no current is applied to the coil 1310 .

[0370] When a forward current is applied to the coil 1310, the coil 1310 can move upward in the optical axis direction due to electromagnetic interaction between the coil 1310 and the magnet 1320 (see FIG. 69(a)). At this time, the holder 1210 can move upward in the optical axis direction together with the coil 1310. Furthermore, the lens can move upward in the optical axis direction together with the holder 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 can be adjusted.

[0371] When a reverse current is applied to the coil 1310, the coil 1310 can move downward in the optical axis direction due to electromagnetic interaction between the coil 1310 and the magnet 1320 (see FIG. 70 b). At this time, the holder 1210 can move downward in the optical axis direction together with the coil 1310. Furthermore, the lens can move downward in the optical axis direction together with the holder 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 can be adjusted.

[0372] Meanwhile, during the movement of coil 1310, sensor 1330 moves together with coil 1310 and senses the strength of the magnetic field of magnet 1320, thereby detecting the amount of movement and position of the lens in the optical axis direction. The amount of movement and position of the lens in the optical axis direction detected by sensor 1330 can be used for autofocus feedback control.

[0373] Hereinafter, autofocus (AF) driving of a lens driving device according to a modified example will be described with reference to the drawings.

[0374] 71 to 73 are diagrams illustrating autofocus driving of a lens driving device according to a second embodiment of the present invention. Fig. 71 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. 72 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. 73 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.

[0375] As shown in FIG. 71, the moving part 1200 can be positioned at a position separated from both the upper plate 1121 of the cover 1120 and the base 1110 from the initial position where no current is applied to the coil 1310-1.

[0376] When a forward current is applied to the coil 1310-1, the magnet 1320-1 can move upward in the optical axis direction due to electromagnetic interaction between the coil 1310-1 and the magnet 1320-1 (see FIG. 72(a)). At this time, the holder 1210 can move upward in the optical axis direction together with the magnet 1320-1. Furthermore, the lens can move upward in the optical axis direction together with the holder 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 can be adjusted.

[0377] When a reverse current is applied to the coil 1310-1, the magnet 1320-1 moves downward in the optical axis direction due to electromagnetic interaction between the coil 1310-1 and the magnet 1320-1 (see FIG. 73 b). At this time, the holder 1210 moves downward in the optical axis direction together with the magnet 1320-1. Furthermore, the lens moves downward in the optical axis direction together with the holder 1210. As a result, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0378] Meanwhile, during the movement of magnet 1320-1, sensor 1330-1 can sense the strength of the magnetic field of magnet 1320-1 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 sensed by sensor 1330-1 can be used for autofocus feedback control.

[0379] A camera device according to a second embodiment of the present invention will now be described with reference to the drawings.

[0380] FIG. 74 is an exploded perspective view of a camera device according to a second embodiment of the present invention.

[0381] The camera device 1010A may include a camera module.

[0382] 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 a holder 1210 of the lens driving device 1010. The lens module 1020 may be coupled to the holder 1210 by a screw connection and / or an adhesive. The lens module 1020 may move integrally with the holder 1210.

[0383] The camera device 1010A may include a filter 1030. The filter 1030 may serve to block light of a specific frequency band from passing through the lens module 1020 from entering the image sensor 1060. The filter 1030 may be arranged parallel to the xy plane. The filter 1030 may be arranged between the lens module 1020 and the image sensor 1060. The filter 1030 may be arranged on the sensor base 1040. Alternatively, the filter 1030 may be arranged on the base 1110. The filter 1030 may include an infrared filter. The infrared filter may block light in the infrared range from entering the image sensor 1060.

[0384] 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 any one or more of epoxy, a thermosetting adhesive, and an ultraviolet curable adhesive.

[0385] 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.

[0386] The camera device 1010A may include an image sensor 1060. The image sensor 1060 may be configured to form an image by receiving light that has passed through a lens and a filter 1030. The image sensor 1060 may be mounted on a printed circuit board 1050. The image sensor 1060 may be electrically connected to the printed circuit board 1050. For example, the image sensor 1060 may be coupled to the printed circuit board 1050 using surface mounting technology (SMT). For another example, the image sensor 1060 may be coupled to the printed circuit board 1050 using flip chip technology. The image sensor 1060 may be disposed such that its optical axis coincides with that of a lens. That is, the optical axis of the image sensor 1060 and the optical axis of the lens may be aligned. The image sensor 1060 may convert light irradiated onto an effective image area of ​​the image sensor 1060 into an electrical signal. The image sensor 1060 may be any one of a CCD (charge coupled device), a MOS (metal oxide semi-conductor), a CPD, and a CID.

[0387] 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.

[0388] 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 1310 of the lens driving device 1010. The control unit 1080 may individually control the direction, strength, amplitude, etc. of the current supplied to the coils 1310. The control unit 1080 may control the lens driving device 1010 to perform an autofocus function and / or an image stabilization function. Furthermore, the control unit 1080 may perform autofocus feedback control and / or image stabilization feedback control for the lens driving device 1010.

[0389] 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.

[0390] An optical apparatus according to a second embodiment of the present invention will now be described with reference to the drawings.

[0391] FIG. 75 is a perspective view of an optical apparatus according to a second embodiment of the present invention, and FIG. 76 is a perspective view of an optical apparatus according to a modified example.

[0392] 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.

[0393] The optical device 1001 may include a main body 1020. The optical device 1001 may include a camera device 1010A. The camera device 1010A may be disposed in the main body 1020. The camera device 1010A may photograph an object. The optical device 1001 may include a display. The display may be disposed in the main body 1020. The display may output one or more of a video and an image photographed by the camera device 1010A. The display may be disposed on a first surface of the main body 1020. The camera device 1010A may be disposed on one or more of the first surface and a second surface opposite the first surface of the main body 1020. As shown in FIG. 75, the camera device 1010A may have triple cameras arranged vertically. As shown in FIG. 76, the camera device 1010A-1 may have triple cameras arranged horizontally.

[0394] Although the first and second embodiments have been described separately above, some components of the first embodiment and some components of the second embodiment can be mixed together. That is, some components of the first embodiment can be replaced with corresponding components of the second embodiment. Furthermore, some components of the second embodiment can be replaced with corresponding components of the first embodiment. Furthermore, a third embodiment of the present invention can include both some components of the first embodiment and some components of the second embodiment.

[0395] 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. Base; a housing disposed on the base; a bobbin disposed within the housing; a first ball disposed between a side surface of the housing and the base; a second ball disposed between the housing and an upper side of the bobbin; a first elastic member coupled to an upper portion of the bobbin; a second resilient member coupled to the underside of the housing; and The lens driving device includes a wire connecting the first elastic member and the second elastic member.

2. The lens driving device according to claim 1 , wherein the base includes a first guide that guides the first ball to move.

3. The lens driving device according to claim 2 , wherein the side surface of the housing includes a second guide that guides the first ball to move.

4. The lens driving device according to claim 3 , wherein the first guide and the second guide include grooves.

5. 2. The lens driving device according to claim 1, wherein the housing comprises a first housing including an upper plate having a metal member, and a second housing disposed on the first housing and having a protrusion for guiding the second ball.

6. Fixed part; a first movable portion disposed within the fixed portion; a second moving part disposed within the first moving part; a first drive unit that moves the first moving unit in the optical axis direction; and a second driving unit that moves the second moving unit in a direction perpendicular to the optical axis direction, the first driving section includes a first driving unit disposed on the first moving section and a second driving unit disposed on the fixed section, The lens driving device, wherein the second driving section includes a third driving unit disposed on the second moving section and a fourth driving unit disposed on the first moving section.

7. The lens driving device according to claim 6 , wherein the fourth driving unit includes a coil.

8. The lens driving device according to claim 7 , wherein the coil moves together with the first moving part.

9. the first drive unit includes a first magnet; The lens driving device according to claim 7 , wherein the second driving unit includes a first coil.

10. 8. The lens driving device according to claim 7, wherein the second driving section includes a fifth driving unit disposed on the second moving section and spaced apart from the third driving unit, and a sixth driving unit disposed on the first moving section and spaced apart from the fourth driving unit.

Images