Lens drive device, camera device and optical equipment

Abstract

This embodiment relates to a lens driving device that includes a base; a housing disposed on the base; a bobbin disposed within the housing; a first ball disposed between the housing and the base; a second ball disposed between the housing and the underside of the bobbin; an elastic member that couples with the upper side of the bobbin; and a wire that connects the elastic member to the underside of the housing.

Description

[Technical Field]

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

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

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

[0004] Autofocus and image stabilization functions can be performed through electromagnetic interactions between the magnet and the coil.

[0005] However, in conventional lens driving devices, the magnet and coil for performing the autofocus function are arranged in a moving part, and the coil is arranged in a fixed part, which does not require 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 separate 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 that a centering force exists in the optical axis direction, and furthermore, there is a possibility that the moving part may tilt due to the contact point of the ball.

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

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

[0012] This embodiment provides a lens driving device that reduces the amount of wear and tear required to perform the autofocus function by disposing a coil, which is lighter in weight than a magnet, in a moving part.

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

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

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

[0016] This embodiment provides a lens driving device in which the structure that guides the movement of the moving part for the image stabilization function is prevented from coming off or being damaged due to an external impact or the like to a minimum.

[0017] Furthermore, this embodiment provides a lens driving device in which the lamination direction during the assembly process is changed and a stable joint surface with the lens is ensured. [Means for solving the problem]

[0018] The lens driving device of this embodiment may include a base; a housing disposed on the base; a bobbin disposed within the housing; a first ball disposed between the housing and the base; a second ball disposed between the housing and the underside of the bobbin; an elastic member coupled to the upper side of the bobbin; and a wire connecting the elastic member to the underside of the housing.

[0019] The base may include a first guide that guides the first ball to move.

[0020] The housing may include a second guide on a side surface thereof for guiding the first ball to move.

[0021] The first guide and the second guide may include a groove.

[0022] The housing may include a first housing including a lower plate having a metal member, and a second housing having a protrusion coupled to the first housing to guide the second ball.

[0023] The device may include a first substrate disposed between the first housing and the second housing, the first substrate being coupled to a lower surface of the first housing, and the second housing being coupled to the first substrate.

[0024] The second housing can contact the second ball and apply pressure to a portion of the elastic member.

[0025] The elastic member may include an inner portion that is coupled to the bobbin, an outer portion that is coupled to the wire, and a connecting portion that connects the inner portion and the outer portion, and the inner portion of the elastic member may be located above the outer portion.

[0026] The bobbin may include a first region that couples with the elastic member, and the wire may include a second region that couples with the elastic member, and the first region of the bobbin may be located above the second region of the wire.

[0027] The lens driving device of this embodiment includes a fixed part; a first moving part arranged on the fixed part; a second moving part arranged within the first moving part; a first driving part that moves the first moving part in the optical axis direction; a second driving part that moves the second moving part in a direction perpendicular to the optical axis direction; a first ball arranged between the first moving part and the second moving part; an elastic member that connects to the upper surface of the second moving part; and a wire that is arranged in the optical axis direction, wherein the upper end of the wire is connected to the elastic member and the lower end of the wire can be connected to the lower surface of the first moving part.

[0028] The first moving part may include a holder member and a metal member disposed on the holder member, and the lower end of the wire may be coupled to the metal member.

[0029] The first moving part may include a holder member and a preload member coupled to the holder member, the preload member including a main body part coupled to the holder member and a protrusion part protruding upward from the main body part, and the first ball may be positioned on the protrusion part of the preload member.

[0030] The preload member may include a groove formed in a concave shape on an upper surface of the protrusion, and the first ball may be disposed in the groove of the protrusion.

[0031] The second moving part may include a groove formed in a concave shape on the lower surface of the second moving part, and the first ball may be positioned between the groove of the protrusion of the first moving part and the groove of the second moving part.

[0032] The fixed portion may include a base and a cover coupled to the base, and the preload member may be disposed between the first moving portion and the base in the optical axis direction.

[0033] The first driving unit may include a first magnet disposed on the fixed unit and a first coil disposed on the first moving unit.

[0034] The second driving unit may include a second magnet and a third magnet arranged on the second moving unit, and a second coil and a third coil arranged on the first moving unit, wherein the second magnet and the second coil move the second moving unit in a first direction perpendicular to the optical axis direction, and the third magnet and the third coil move the second moving unit in a second direction perpendicular to the optical axis direction and the first direction.

[0035] The first ball can guide the second moving part to move in the first direction and the second direction.

[0036] The device may include a second ball disposed between the fixed portion and the first moving portion; and an elastic member that presses the second ball between the fixed portion and the first moving portion.

[0037] The lens driving device may include a first buffer member arranged on an upper surface of the base, and at least a portion of the first buffer member may be arranged between the preload member and the base in the optical axis direction.

[0038] The lens driving device may include a second buffer member arranged on the cover, the cover including an upper plate and a side plate, and the second buffer member may be arranged on the upper plate of the cover so that at least a portion of the second buffer member is arranged between the upper plate of the cover and the first moving part in the optical axis direction.

[0039] The lens driving device may include a third buffer member arranged on the first moving section, the first moving section including a holder member and a lid connected to the upper side of the holder member, and the third buffer member may be arranged on the underside of the lid so that at least a portion of the third buffer member is arranged between the lid and the second moving section in the optical axis direction.

[0040] The camera device according to this embodiment may include a printed circuit board; an image sensor disposed on the printed circuit board; the lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0041] The optical device according to this embodiment may include a main body; a camera device disposed on the main body; and a display disposed on the main body and configured to output one or more of a video and an image captured by the camera device. [Effects of the Invention]

[0042] In this embodiment, 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.

[0043] Furthermore, by integrally forming the guide structure for driving the OIS-x axis and the guide structure for driving the OIS-y axis, the height of the lens driving device in the optical axis direction can be minimized.

[0044] This makes it possible to minimize the height at which the camera device protrudes from the smartphone, or it is not necessary for the camera device to protrude from the smartphone at all.

[0045] Furthermore, since there is no centering force in the optical axis direction that occurs when the ball is pressed via the yoke and the magnet, i.e., there is no force that tries to return to the centering position, the current consumption consumed in the AF drive is slightly reduced and the accuracy of the AF drive can be improved. In this case, the centering force may be replaced by any one or more of a force that returns to the initial position, a restoring force, a return force, and a return force.

[0046] Furthermore, in this embodiment, the ball guide structures are arranged diagonally, which can prevent the moving part from rotating and / or tilting.

[0047] Furthermore, in this embodiment, it is possible to minimize separation or damage caused by external impacts to the structure that guides the movement of the moving part for the image stabilization function.

[0048] Furthermore, in this embodiment, the stacking direction during the assembly process can be changed to ensure a stable bonding surface with the lens. More specifically, in this embodiment, the AF carrier 210 may be stacked on the upper side of the base 110, the OIS carrier 310 may be stacked on the upper side of the AF carrier 210, and the lens may be stacked on the upper side of the AF carrier 210. [Brief explanation of the drawings]

[0049] [Figure 1] 1 is a conceptual diagram of a lens driving device according to an embodiment of the present invention.

[0050] [Figure 2] FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention.

[0051] [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2.

[0052] [Figure 4] FIG. 3 is a cross-sectional view taken along the line BB in FIG. 2.

[0053] [Figure 5] FIG. 5 is an enlarged view of region F in FIG.

[0054] [Figure 6] FIG. 3 is a cross-sectional view taken along CC in FIG. 2.

[0055] [Figure 7] FIG. 7 is an enlarged view of region G in FIG. 6.

[0056] [Figure 8] FIG. 3 is a cross-sectional view taken along the line DD in FIG. 2.

[0057] [Figure 9] FIG. 9 is an enlarged view of region H in FIG. 8.

[0058] [Figure 10] FIG. 3 is a cross-sectional view taken along the line EE in FIG. 2.

[0059] [Figure 11] 1 is a cross-sectional view of a lens driving device according to an embodiment of the present invention, taken along a direction perpendicular to an optical axis and viewed from above.

[0060] [Figure 12] FIG. 2 is an exploded perspective view of the lens driving device according to the embodiment.

[0061] [Figure 13] 13 is an exploded perspective view of the lens driving device according to the present embodiment, seen from a direction different from that of FIG. 12. FIG.

[0062] [Figure 14] FIG. 2 is a perspective view of the lens driving device according to the embodiment, with the cover omitted.

[0063] [Figure 15] 2 is a perspective view illustrating a fixing portion and related configuration of the lens driving device according to the embodiment. FIG.

[0064] [Figure 16a]1 is a perspective view illustrating a moving unit and related configuration of a lens driving device according to an embodiment of the present invention.

[0065] [Figure 16b] 1 is a perspective view illustrating a coupling structure between an inner substrate and an outer substrate of a lens driving device according to an embodiment of the present invention.

[0066] [Figure 16c] 2 is a bottom perspective view illustrating a moving unit and related configuration of the lens driving device according to the embodiment. FIG.

[0067] [Figure 16d] 1 is a bottom perspective view illustrating a coupling structure between an inner substrate and an outer substrate of the lens driving device according to the present embodiment. FIG.

[0068] [Figure 17] FIG. 16b is a perspective view of FIG. 16a with the lid removed.

[0069] [Figure 18a] FIG. 18 is a perspective view of a state in which the OIS moving unit and related components have been removed from FIG. 17.

[0070] [Figure 18b] FIG. 18b is an exploded perspective view of FIG. 18a with the wires separated.

[0071] [Figure 19] 2 is a perspective view illustrating an OIS moving unit and related configuration of the lens driving device according to the present embodiment. FIG.

[0072] [Figure 20] FIG. 20 is a bottom perspective view seen from a different direction than FIG. 19.

[0073] [Figure 21] 16b is a bottom perspective view of FIG. 16a viewed from another direction.

[0074] [Figure 22] 22 is a bottom view of a state in which the preload member and the inner substrate are removed from FIG. 21. FIG.

[0075] [Figure 23] 1 is a perspective view illustrating a coupling structure of an elastic member, a wire, and a metal member of a lens driving device according to an embodiment of the present invention.

[0076] [Figure 24] FIG. 24 is an enlarged view of region I in FIG. 23.

[0077] [Figure 25] FIG. 2 is a bottom perspective view of a drive unit of the lens drive device according to the embodiment.

[0078] [Figure 26] 1 is a cross-sectional perspective view illustrating a connection structure between a wire and a preload member of a lens driving device according to an embodiment of the present invention.

[0079] [Figure 27] 4 is a cross-sectional view illustrating a connection structure between a wire and a preload member of the lens driving device according to the embodiment. FIG.

[0080] [Figure 28] FIG. 2 is a plan view of the lens driving device according to the embodiment with the cover removed.

[0081] [Figure 29] FIG. 29 is an enlarged plan view of a part of FIG. 28 with the cover omitted.

[0082] [Figure 30] FIG. 2 is a perspective view illustrating a ball and related configuration of the lens driving device according to the embodiment.

[0083] [Figure 31] 1 is a perspective view illustrating a ball receiving structure of a base of a lens driving device according to an embodiment of the present invention. FIG.

[0084] [Figure 32]32 is a perspective view illustrating a state in which the ball, the plate member, the elastic member, and the reinforcing member are arranged in FIG. 31. FIG.

[0085] [Figure 33] FIG. 33 is a perspective view of FIG. 32 seen from another direction.

[0086] [Figure 34] FIG. 2 is a perspective view illustrating a moving portion and a ball of the lens driving device according to the embodiment.

[0087] [Figure 35] FIG. 35 is a perspective view of FIG. 34 seen from another direction.

[0088] [Figure 36] (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.

[0089] [Figure 37] FIG. 10 is a cross-sectional view of a lens driving device according to a modified example.

[0090] [Figure 38] FIG. 10 is a perspective view illustrating a base and a base cushioning member of a lens driving device according to a modified example.

[0091] [Figure 39] FIG. 10 is a perspective view illustrating a cover and a cover cushioning member of a lens driving device according to a modified example.

[0092] [Figure 40] FIG. 10 is a perspective view illustrating a lid and a lid cushioning member of a lens driving device according to a modified example.

[0093] [Figure 41] 41 is a cross-sectional view illustrating the state of the moving part in the initial state where no current is applied to the AF coil, illustrating the autofocus driving of the lens driving device according to the present embodiment. [Figure 42] 42 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, illustrating the autofocus driving of the lens driving device according to the present embodiment. [Figure 43] 43 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, illustrating the autofocus driving of the lens driving device according to the present embodiment.

[0094] [Figure 44] 44 is a cross-sectional view illustrating the state of the OIS moving part in the initial state where no current is applied to the OIS-x coil and the OIS-y coil. [Figure 45] 45 is a cross-sectional view illustrating a state in which a current is applied to the OIS-x coil and the OIS moving part moves in the x-axis direction perpendicular to the optical axis, as a result of which the OIS moving part moves in the x-axis direction perpendicular to the optical axis, as shown in FIG. [Figure 46] 46 is a cross-sectional view illustrating a state in which a current is applied to the OIS-y coil, causing the OIS moving part to move in the y-axis direction perpendicular to both the optical axis and the x-axis, when the OIS-y coil is turned on and the OIS moving part moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0095] [Figure 47] FIG. 2 is an exploded perspective view of the camera device according to the embodiment.

[0096] [Figure 48] FIG. 1 is a perspective view of an optical device according to an embodiment of the present invention.

[0097] [Figure 49] FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0098] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0099] 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.

[0100] Furthermore, unless otherwise clearly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that are commonly understood by a person having ordinary knowledge in the technical field to which the present invention belongs, and commonly used terms, such as predefined terms, may be interpreted in light of the contextual meaning of the relevant art.

[0101] 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.

[0102] 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.

[0103] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. are used to distinguish the components from other components, and the terms do not limit the nature, order, or sequence of the components.

[0104] 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.

[0105] 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.

[0106] The "optical axis (see OA in FIG. 41) direction" used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0107] 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."

[0108] Hereinafter, one of the "x-axis direction" and the "y-axis direction" may be referred to as the "first direction," and the other may be referred to as the "second direction."

[0109] 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 provides feedback (feedback) to control the position of the lens in real time to improve the accuracy of focus adjustment.

[0110] As used below, "optical image stabilization (OIS) function" is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset hand tremors in order to prevent blurring of images or videos caused by the user's hand tremors. 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 image stabilization.

[0111] Hereinafter, one of the "AF movement unit 200" and the "OIS movement unit 300" may be referred to as the "first movement unit" and the other as the "second movement unit."

[0112] 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."

[0113] Hereinafter, the "AF drive unit," "OIS-x drive unit," and "OIS-y drive unit" may be arbitrarily referred to as the "first drive unit," "second drive unit," and "third drive unit," respectively.

[0114] Hereinafter, the "AF magnet 410," "OIS-x magnet 510," and "OIS-y magnet 610" may be arbitrarily referred to as the "first magnet," "second magnet," and "third magnet," respectively.

[0115] Hereinafter, the "AF coil 420," "OIS-x coil 520," and "OIS-y coil 620" may be arbitrarily referred to as the "first coil," "second coil," and "third coil," respectively.

[0116] Hereinafter, one of the "outer substrate 710" and the "inner substrate 720" may be referred to as the "first substrate" and the other as the "second substrate."

[0117] 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."

[0118] Hereinafter, one of the "holder member 220" and the "preload material 230" may be referred to as the "first member," and the other as the "second member." Alternatively, hereafter, one of the "holder member 220" and the "preload material 230" may be referred to as the "first housing," and the other as the "second housing."

[0119] Hereinafter, the "AF sensor 430," "OIS-x sensor 530," and "OIS-y sensor 630" may be arbitrarily referred to as the "first sensor," "second sensor," and "third sensor," respectively.

[0120] Hereinafter, the "AF yoke 440," "OIS-x yoke 540," and "OIS-y yoke 640" may be arbitrarily referred to as the "first yoke," "second yoke," and "third yoke," respectively.

[0121] Hereinafter, the "base cushioning member 960," "cover cushioning member 970," and "lid cushioning member 980" may be arbitrarily referred to as the "first cushioning member," "second cushioning member," and "third cushioning member," respectively.

[0122] Hereinafter, the individual balls of the AF guide ball 810 and the individual balls of the OIS guide ball 820 may be arbitrarily referred to as the "first unit ball," "second unit ball," "third unit ball," and "fourth unit ball," respectively. Furthermore, the term "nth unit ball" can be used to refer to individual balls such as the "fifth unit ball," "sixth unit ball," etc.

[0123] Hereinafter, one of the "pillar portion 111" and the "external wall portion 112" may be referred to as the "first portion" and the other as the "second portion."

[0124] Hereinafter, one of the "inner groove 111-1" and the "outer groove 112-1" may be referred to as the "first groove," and the other may be referred to as the "second groove."

[0125] Hereinafter, one of the "inner groove 224-1" and the "outer groove 224-2" may be referred to as the "first groove," and the other may be referred to as the "second groove."

[0126] Hereinafter, one of the "inner ball 811" and the "outer ball 812" may be referred to as the "first unit ball" and the other as the "second unit ball."

[0127] Hereinafter, one of the "inner uppermost ball 811-1" and the "outer uppermost ball 812-1" may be referred to as the "first uppermost ball," and the other may be referred to as the "second uppermost ball."

[0128] Hereinafter, one of the "inner lowest end ball 811-2" and the "outer lowest end ball 812-2" may be referred to as the "first lowest end ball," and the other may be referred to as the "second lowest end ball."

[0129] Hereinafter, one of the "upper bent portion 921," "lower bent portion 922," and "connecting bent portion 923" may be referred to as the "first bent portion," the other as the "second bent portion," and the other as the "third bent portion."

[0130] Hereinafter, the "AF carrier 210" may be referred to as the "housing." Hereinafter, the "OIS carrier 310" may be referred to as the "bobbin."

[0131] The configuration of the lens driving device according to this embodiment will be described below with reference to the drawings.

[0132] FIG. 1 is a conceptual diagram of a lens driving device according to this embodiment. FIG. 2 is a perspective view of the lens driving device according to this embodiment. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. FIG. 4 is a cross-sectional view taken along line BB in FIG. 2. FIG. 5 is an enlarged view of area F in FIG. 4. FIG. 6 is a cross-sectional view taken along line CC in FIG. 2. FIG. 7 is an enlarged view of area G in FIG. 6. FIG. 8 is a cross-sectional view taken along line DD in FIG. 2. FIG. 9 is an enlarged view of area H in FIG. 8. FIG. 10 is a cross-sectional view taken along line EE in FIG. 2. FIG. 11 is a cross-sectional view of the lens driving device according to this embodiment cut in a direction perpendicular to the optical axis and viewed from above. FIG. 12 is an exploded perspective view of the lens driving device according to this embodiment. FIG. 13 is an exploded perspective view of the lens driving device according to this embodiment seen from a direction different from that of FIG. 12. FIG. 14 is a perspective view of the lens driving device according to this embodiment with the cover omitted. FIG. 15 is a perspective view illustrating a fixed portion and related components of the lens driving device according to this embodiment. FIG. 16a is a perspective view illustrating a moving portion and related components of the lens driving device according to this embodiment. FIG. 16b is a perspective view illustrating the coupling structure between the inner substrate and the outer substrate of the lens driving device according to this embodiment. FIG. 16c is a bottom perspective view illustrating the moving unit and related components of the lens driving device according to this embodiment. FIG. 16d is a bottom perspective view illustrating the coupling structure between the inner substrate and the outer substrate of the lens driving device according to this embodiment. FIG. 17 is a perspective view of FIG. 16 with the cover removed. FIG. 18a is a perspective view of FIG. 17 with the OIS moving unit and related components removed. FIG. 18b is an exploded perspective view of FIG. 18a with the wire separated. FIG. 19 is a perspective view of the OIS moving unit and related components of the lens driving device according to this embodiment. FIG. 20 is a bottom perspective view seen from a different direction from FIG. 19. FIG. 21 is a bottom perspective view of FIG. 16a seen from another direction. FIG. 22 is a bottom view of FIG. 21 with the preload member and inner substrate removed. FIG. 23 is a perspective view illustrating the coupling structure of the elastic member, wire, and metal member of the lens driving device according to this embodiment. FIG. 24 is an enlarged view of area I of FIG. 23. Fig. 25 is a bottom perspective view of a driving unit of the lens driving device according to this embodiment. Fig. 26 is a cross-sectional perspective view illustrating the connection structure between the wire and the preload member of the lens driving device according to this embodiment.FIG. 27 is a cross-sectional view illustrating the connection structure between the wire and the preload member of the lens driving device according to this embodiment. FIG. 28 is a plan view of the lens driving device according to this embodiment with the cover removed. FIG. 29 is an enlarged plan view of a portion of FIG. 28 with the cover omitted. FIG. 30 is a perspective view illustrating the ball and related components of the lens driving device according to this embodiment. FIG. 31 is a perspective view illustrating the ball housing structure of the base of the lens driving device according to this embodiment. FIG. 32 is a perspective view illustrating the arrangement of the plate member, elastic member, and reinforcing member shown in FIG. 31. FIG. 33 is a perspective view of FIG. 32 from another direction. FIG. 34 is a perspective view of the moving unit and ball of the lens driving device according to this embodiment. FIG. 35 is a perspective view of FIG. 34 from another direction. FIG. 36(a) is a diagram comparing the heights of the ball and the pressure point when the moving unit is moved upward, and FIG. 36(b) is a diagram comparing the heights of the ball and the pressure point when the moving unit is moved downward.

[0133] 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.

[0134] 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.

[0135] The lens driving device 10 may include a base 110. The fixed portion 100 may include the base 110. The base 110 may be disposed below the AF carrier 210. The base 110 may be disposed below the OIS carrier 310. The base 110 may be coupled to a cover 120. The AF carrier 210 and the OIS carrier 310 may be disposed on the base 110. The AF carrier 210 and the OIS carrier 310 may be disposed on a bottom plate portion of the base 110. The AF carrier 210 and the OIS carrier 310 may be disposed within the base 110. The AF carrier 210 and the OIS carrier 310 may be disposed within a side wall portion of the base 110.

[0136] The base 110 may include a lower plate portion. The lower plate portion of the base 110 may support the lower surface of the AF moving unit 200. The lower plate portion of the base 110 may support the lower surface of the AF carrier 210.

[0137] The base 110 may include a post 111. The post 111 may extend from the upper surface of the lower plate. The post 111 may be disposed inside the outer wall 112.

[0138] The base 110 may include a first guide that guides the movement of the AF guide ball 810. The first guide may include an inner groove 111-1 of the base 110. The first guide may include an outer groove 112-1 of the base 110.

[0139] The base 110 may include an inner groove 111-1. The pillar portion 111 may include an inner groove 111-1. The inner groove 111-1 may be formed on the pillar portion 111. The inner groove 111-1 may be an "AF guide ball receiving groove." The AF guide ball 810 may be disposed in the inner groove 111-1. The inner ball 811 may be disposed in the inner groove 111-1. The inner groove 111-1 may be in direct contact with the AF guide ball 810. The inner groove 111-1 may be disposed in the optical axis direction. The inner groove 111-1 may include multiple grooves. The inner groove 111-1 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally to each other with respect to the optical axis.

[0140] The base 110 may include a step portion 111-2. The step portion 111-2 may be formed on the column portion 111. A plate member 910 may be disposed on the step portion 111-2.

[0141] The base 110 can include an outer wall portion 112. The outer wall portion 112 can be a "side portion." The outer wall portion 112 can be a "side panel." The outer wall portion 112 can be a "side wall." The outer wall portion 112 of the base 110 can extend from the upper surface of the lower panel portion.

[0142] The base 110 may include an outer groove 112-1. The outer wall portion 112 may include an outer groove 112-1. The outer groove 112-1 may be formed to face the inner groove 111-1. The outer groove 112-1 may be arranged to face the inner groove 111-1. The outer groove 112-1 may be an "AF guide ball receiving groove." The AF guide ball 810 may be arranged in the outer groove 112-1. The outer ball 812 may be arranged in the outer groove 112-1. The outer groove 112-1 may be in direct contact with the AF guide ball 810. The outer groove 112-1 may be arranged in the optical axis direction. The outer groove 112-1 may include multiple grooves. The outer groove 112-1 may include two grooves. The two grooves may be arranged parallel to each other. The two grooves may be arranged diagonally to each other with respect to the optical axis. The outer groove 112-1 may be disposed on the opposite side of the inner groove 111-1. The outer groove 112-1 may be formed in a shape corresponding to the inner groove 111-1. The outer groove 112-1 and the inner groove 111-1 may be formed to have the same length in the optical axis direction.

[0143] 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.

[0144] 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.

[0145] The lens driving device 10 may include a cover 120. The fixed part 100 may include the cover 120. The cover 120 may be disposed on the base 110. The cover 120 may be coupled to the base 110. The cover 120 may be fixed to the base 110. The cover 120 may house the AF carrier 210 therein. The cover 120 may house the OIS carrier 310 therein. The cover 120 may be a shielding member. The cover 120 may be a shielding can.

[0146] 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.

[0147] 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.

[0148] 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 movably on the fixed unit 100. The moving unit can be moved with respect to the fixed unit 100 by a driving unit. The moving unit can move during AF driving. The moving unit can move during OIS driving. A lens may be coupled to the moving unit.

[0149] The lens driving device 10 may include an AF moving unit 200. The AF moving unit 200 may be disposed in 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 300. The AF moving unit 200 may be disposed movably on the fixed unit 100. The AF moving unit 200 can be moved in the optical axis direction relative to the fixed unit 100 by an AF driving unit 400. The AF moving unit 200 can move during AF driving.

[0150] In a modified example, the AF movement unit 200 and the AF drive unit 400 may be omitted. That is, the OIS movement unit 300 may be disposed on the fixed unit 100. Alternatively, the OIS movement unit 300 may be disposed on the fixed unit 100, and the AF movement unit 200 may be disposed within the OIS movement unit 300.

[0151] The lens driving device 10 may include an AF carrier 210. The AF movement unit 200 may include the AF carrier 210. The AF carrier 210 may be an "AF holder." The AF carrier 210 may be a "housing." The AF carrier 210 may be disposed within the base 110. The AF carrier 210 may be disposed on the base 110. The AF carrier 210 may be disposed within the cover 120. The AF carrier 210 may be disposed between the base 110 and the OIS carrier 310. The AF carrier 210 may be disposed so as to be movable in the optical axis direction.

[0152] The AF carrier 210 may include a frame, a first upper plate, and a second upper plate. In this case, the frame may be a main body. The frame may be a holder member 220. The first upper plate may be a metal member 225. The second upper plate may be a preload member 230. The AF carrier 210 may be a housing. The housing may include a first housing and a second housing. In this case, the first housing may include the holder member 220, and the second housing may include the preload member 230. The OIS carrier 310 may be a bobbin. The OIS guide 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 a base or a pillar of the base.

[0153] 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 wire 850 may be coupled to the holder member 220.

[0154] The AF carrier 210 may include a bottom plate. The bottom plate may be disposed below the OIS carrier 310. The bottom plate may be disposed between the OIS carrier 310 and the base 110.

[0155] The AF carrier 210 may include a groove 222. The groove 222 may be a "preload member passing hole." The holder member 220 may include a groove 222. The lower plate of the holder member 220 may include the groove 222. The groove 222 may be formed in the lower plate 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 groove 222 into which the protrusion 231 of the preload member 230 is inserted.

[0156] The AF carrier 210 may include a sidewall. The sidewall may extend downward from the upper plate. An inner substrate 720 may be disposed on the sidewall. The AF coil 420 may be disposed on the sidewall. The OIS-x coil 520 may be disposed on the sidewall. The OIS-y coil 620 may be disposed on the sidewall. The sidewall may include a groove for avoiding the coil. The sidewall may include a plurality of sidewalls. The sidewall may include four sidewalls. The sidewalls may include a first sidewall and a second sidewall disposed opposite each other, and a third sidewall and a fourth sidewall disposed opposite each other.

[0157] The AF carrier 210 may include a second guide that guides the movement of the AF guide ball 810. The second guide may include an inner groove 224-1 of the AF carrier 210. The second guide may include an outer groove 224-2 of the AF carrier 210.

[0158] The AF carrier 210 may include an inner groove 224-1. The holder member 220 may include an inner groove 224-1. The inner groove 224-1 may be an "AF guide ball receiving groove." An AF guide ball 810 may be disposed in the inner groove 224-1. An inner ball 811 may be disposed in the inner groove 224-1. The inner groove 224-1 may be in direct contact with the AF guide ball 810. The inner groove 224-1 may be disposed in the optical axis direction. The inner groove 224-1 may guide the AF guide ball 810 to move in the optical axis direction. The inner groove 224-1 may include multiple grooves. The inner groove 224-1 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally to each other with respect to the optical axis.

[0159] The AF carrier 210 may include an outer groove 224-2. The holder member 220 may include an outer groove 224-2. The outer groove 224-2 may be an "AF guide ball receiving groove." An AF guide ball 810 may be disposed in the outer groove 224-2. An outer ball 812 may be disposed in the outer groove 224-2. The outer groove 224-2 may be in direct contact with the AF guide ball 810. The outer groove 224-2 may be disposed in the optical axis direction. The outer groove 224-2 may guide the AF guide ball 810 to move in the optical axis direction. The outer groove 224-2 may include multiple grooves. The outer groove 224-2 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed diagonally relative to each other with respect to the optical axis. The outer groove 224-2 may be disposed opposite the inner groove 224-1. The outer groove 224-2 may be formed to have a shape corresponding to the inner groove 224-1. The outer groove 224-2 and the inner groove 224-1 may be formed to have the same length in the optical axis direction.

[0160] The AF carrier 210 may include a metal member 225. The holder member 220 may include a metal member 225. The holder member 220 may include a lower plate having the metal member 225. The metal member 225 may be disposed in the holder member 220. The metal member 225 may be insert-injected into the holder member 220. At least a portion of the metal member 225 may be disposed on the upper surface of the holder member 220. The metal member 225 may be disposed to reinforce the strength of the holder member 220. The metal member 225 may include a hole.

[0161] The holes may be provided with wires 850. The wires 850 can pass through the holes in the metal member 225.

[0162] The metal member 225 may include a first hole 225-1. The first hole 225-1 may be disposed adjacent to the wire 850. The first hole 225-1 may be disposed adjacent to a hole through which the wire 850 passes. The first hole 225-1 may be disposed adjacent to a conductive member that connects the wire 850 to the metal member 225. The conductive member that connects the wire 850 to the metal member 225 may flow into the first hole 225-1. Solder that connects the wire 850 to the metal member 225 may flow into the first hole 225-1. The first hole 225-1 may be formed to have a curvature. The first hole 225-1 may be formed in a U-shape when viewed from below. The first hole 225-1 may have a curved shape when viewed from below.

[0163] The metal member 225 may include a second hole 225-2. The second hole 225-2 may be disposed adjacent to the wire 850. The second hole 225-2 may be disposed adjacent to a hole through which the wire 850 passes. The second hole 225-2 may be disposed adjacent to a conductive member that connects the wire 850 and the metal member 225. The conductive member that connects the wire 850 and the metal member 225 may flow into the second hole 225-2. The second hole 225-2 may be disposed on the opposite side of the wire 850 from the first hole 225-1. The second hole 225-2 may be disposed on the opposite side of the first hole 225-1 from the hole of the metal member 225 through which the wire 850 is disposed. Solder that connects the wire 850 and the metal member 225 may flow into the second hole 225-2. The second hole 225-2 may extend straight.

[0164] 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 arranged on the upper and lower surfaces of the protrusion 226.

[0165] 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 may be coupled to the holder member 220. The preload member 230 may be inserted into the holder member 220 from above and coupled thereto. The preload member 230 may pressurize the OIS guide balls 820. The preload member 230 may contact the OIS guide balls 820. The preload member 230 may be in direct contact with the OIS guide balls 820. The preload member 230 may be coupled to the holder member 220 and pressurize the OIS guide balls 820. The preload member 230 may contact the OIS guide balls 820 and pressurize a portion of the elastic member 830.

[0166] The preload material 230 may be disposed between the AF moving section 200 and the base 110 in the optical axis direction. The preload material 230 may be disposed between the AF moving section 200 and the base 110. The preload material 230 may be disposed between the AF carrier 210 and the base 110.

[0167] The AF carrier 210 may include a protrusion 231. The preload material 230 may include a protrusion 231. The protrusion 231 may be a "protrusion." The preload material 230 may have a protrusion 231 that guides the OIS guide ball 820. The protrusion 231 may be coupled to the groove 222 of the holder member 220. The protrusion 231 of the preload material 230 may be inserted into the groove 222 of the holder member 220 from below. The protrusion 231 of the preload material 230 may be disposed in the groove 222 of the holder member 220. At least a portion of the protrusion 231 of the preload material 230 may be disposed in the groove 222 of the holder member 220. The protrusion 231 may include a plurality of protrusions. The protrusion 231 may include four protrusions.

[0168] 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 accommodating groove." The groove 232 may be formed in the protruding portion 231. The groove 232 may be formed on the upper surface of the protruding portion 231. The groove 232 may be formed at an end of the protruding portion 231. The groove 232 may be formed in a concave shape on the upper surface of the protruding portion 231. An OIS guide ball 820 may be disposed in the groove 232. The OIS guide ball 820 can come into contact with the groove 232.

[0169] The preload member 230 may include a main body portion 233. The main body portion 233 may be coupled to the holder member 220. The main body portion 233 may be disposed on the lower surface of the holder member 220. The protrusion 231 may protrude upward from the main body portion 233.

[0170] The lens driving device 10 may include a lid 240. The AF movement unit 200 may include the lid 240. The lid 240 may be coupled to the AF carrier 210. The lid 240 may be coupled to an upper surface of the AF carrier 210. The lid 240 may be coupled to the AF carrier 210 from above. The lid 240 may be coupled to an upper side of the holder member 220. The lid 240 may include a hook. The hook of the lid 240 may be coupled to the AF carrier 210. The hook of the lid 240 may protrude downward and be coupled to a side surface of the AF carrier 210.

[0171] The lens driving device 10 may include an OIS moving unit 300. The OIS moving unit 300 may be disposed in the fixed unit 100. The OIS moving unit 300 may be disposed within the fixed unit 100. The OIS moving unit 300 may be disposed on the fixed unit 100. The OIS moving unit 300 may be disposed within the AF moving unit 200. The OIS moving unit 300 may be movably disposed. The OIS moving unit 300 can be moved in a direction perpendicular to the optical axis relative to the fixed unit 100 and the AF moving unit 200 by an OIS driving unit. The OIS moving unit 300 can be moved in the x-axis direction by an OIS-x driving unit 500. The OIS moving unit 300 can be moved in the y-axis direction by an OIS-y driving unit 600. The OIS moving unit 300 can move when the OIS is driven.

[0172] The lens driving device 10 may include an OIS carrier 310. The OIS moving unit 300 may include the OIS carrier 310. The OIS carrier 310 may be an "OIS holder." The OIS carrier 310 may be a "bobbin." The OIS carrier 310 may be disposed within the AF carrier 210. The OIS carrier 310 may be disposed within the base 110. The OIS carrier 310 may be disposed on the base 110. The OIS carrier 310 may be disposed within the cover 120. The OIS carrier 310 may be disposed so as to be movable in a direction perpendicular to the optical axis.

[0173] The OIS carrier 310 may include an outer surface. The OIS carrier 310 may include multiple side surfaces. The OIS carrier 310 may include first and second side surfaces opposite each other, and third and fourth side surfaces opposite each other. The AF coil 420 may be disposed between the first side surface of the OIS carrier 310 and the AF magnet 410. The OIS-x magnet 510 may be disposed on the third side surface of the OIS carrier 310. The OIS-y magnet 610 may be disposed on the second side surface of the OIS carrier 310.

[0174] The OIS carrier 310 may include a groove. The groove may be an "elastic member interference prevention groove." The groove may be formed on the upper surface of the OIS carrier 310. The groove may be formed in a concave shape on the upper surface of the OIS carrier 310. The groove may be arranged at a position corresponding to the elastic member 830 so as to prevent interference between the OIS carrier 310 and the elastic member 830.

[0175] The OIS carrier 310 may include a groove 311. The groove 311 may be an "OIS guide ball receiving groove." The OIS guide balls 820 may be arranged in the groove 311. The groove 311 may be in direct contact with the OIS guide balls 820. The groove 311 may be formed concavely on the lower surface of the OIS moving unit 300. The groove 311 may be formed concavely on the lower surface of the OIS carrier 310. The groove 311 may be arranged in a direction perpendicular to the optical axis. The groove 311 may be recessed in the optical axis direction. The groove 311 may include a plurality of grooves. The groove 311 may include four grooves. The groove 311 may be formed on the lower surface of the OIS carrier 310.

[0176] The OIS carrier 310 may include side stoppers. The side stoppers may limit the lateral stroke of the OIS carrier 310. That is, when the OIS carrier 310 moves to its maximum extent, the side stoppers of the OIS carrier 310 may come into contact with one or more of the AF carrier 210 and the base 110. The side stoppers may be formed on the outer surface of the OIS carrier 310. The side stoppers may protrude outward from the side surfaces of the OIS carrier 310.

[0177] The OIS carrier 310 may include a protrusion 312. The protrusion 312 may be coupled to an elastic member 830. The protrusion 312 may be a "coupling protrusion." The elastic member 830 may include a hole into which the protrusion 312 of the OIS carrier 310 is inserted. The protrusion 312 may be formed on the top surface of the OIS carrier 310.

[0178] OIS carrier 310 may include groove 313. Groove 313 may be a "lens adhesive receiving groove." Groove 313 may be formed on the inner circumferential surface of OIS carrier 310. Groove 313 may be formed in a concave shape on the inner circumferential surface of OIS carrier 310. An adhesive may be injected between the lens and OIS carrier 310 through groove 313. An adhesive that bonds the lens and OIS carrier 310 may be placed in groove 313.

[0179] The OIS carrier 310 may include a mounting portion. The mounting portion may be a "magnet mounting portion." The magnets 510 and 620 may be disposed in the mounting portion. The mounting portion may be formed as a groove, for example.

[0180] 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 400. The driving unit may include an OIS driving unit. The driving unit may include an OIS-x driving unit 500. The driving unit may include an OIS-y driving unit 600. The driving unit may include a coil and a magnet.

[0181] The lens driving device 10 may include an AF driving unit 400. The AF driving unit 400 may move the AF movement unit 200 in the optical axis direction. The AF driving unit 400 may move the AF carrier 210 in the optical axis direction. The AF driving unit 400 may move the AF carrier 210 in the optical axis direction via electromagnetic force. The AF driving unit 400 may include a coil and a magnet.

[0182] In this embodiment, the AF carrier 210 and the OIS carrier 310 can move in the optical axis direction due to the interaction between the AF coil 420 and the AF magnet 410. The AF coil 420, the AF carrier 210, and the OIS carrier 310 can move together in the optical axis direction.

[0183] The lens driving device 10 may include an AF magnet 410. The AF driving unit 400 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 may be disposed at a position corresponding to the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 can face the AF coil 420. The AF magnet 410 can overlap with the AF coil 420 in a direction perpendicular to the optical axis.

[0184] 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.

[0185] The lens driving device 10 may include an AF coil 420. The AF driving unit 400 may include an AF coil 420. The AF coil 420 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.

[0186] In this embodiment, the AF coil 420 can move in the optical axis direction. The AF coil 420 can move in the optical axis direction through interaction with the AF magnet 410. The AF coil 420 can move together with the AF movement unit 200. The AF coil 420 can move in the optical axis direction together with the AF movement unit 200. During the AF driving process, the AF coil 420 can move in the optical axis direction together with the AF movement unit 200. The AF coil 420 may be disposed in the AF movement unit 200. The AF coil 420 may be fixed to the AF movement unit 200. The AF coil 420 can be coupled to the AF movement unit 200.

[0187] The lens driving device 10 may include an AF sensor 430. The AF driving unit 400 may include the AF sensor 430. The AF sensor 430 may be a 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 the movement of the AF magnet 410. The movement amount or position of the AF magnet 410 sensed by the AF sensor 430 can be used as feedback for autofocus driving.

[0188] 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.

[0189] The AF sensor 430 may be disposed within the AF coil 420. The AF sensor 430 may overlap with the neutral portion of the AF magnet 410 in a direction perpendicular to the optical axis. As a modification, the AF sensor 430 may be disposed outside the AF coil 420. The AF sensor 430 may overlap with the AF coil 420 in the optical axis direction. The AF sensor 430 may overlap with the AF coil 420 in the direction perpendicular to the optical axis.

[0190] 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.

[0191] The lens driving device 10 may include an AF attractive force yoke 450. The AF attractive force yoke 450 can generate an attractive force with the AF magnet 410. The AF attractive force yoke 450 may be disposed inside the AF coil 420. The AF attractive force yoke 450 may be disposed on the inner surface of the side plate portion 721 of the inner substrate 720. The AF attractive force yoke 450 can attract the AF magnet 410 inward.

[0192] The lens driving device 10 may include an OIS driving unit. The OIS driving unit may move the OIS moving unit 300 in a direction perpendicular to the optical axis direction. The OIS driving unit may move the OIS carrier 310 in a direction perpendicular to the optical axis. The OIS driving unit may move the OIS carrier 310 in a direction perpendicular to the optical axis via electromagnetic force.

[0193] The lens driving device 10 may include an OIS-x driving unit 500. The OIS driving unit may include the OIS-x driving unit 500. The OIS-x driving unit 500 may move the OIS carrier 310 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit 500 may move the OIS carrier 310 in the x-axis direction perpendicular to the optical axis using electromagnetic force. The OIS-x driving unit 500 may include a coil and a magnet.

[0194] In this embodiment, the OIS-x magnet 510 and the OIS-x coil 520 may move the OIS moving unit 300 in a first direction perpendicular to the optical axis direction. In this case, the first direction may be the x-axis direction. The interaction between the OIS-x coil 520 and the OIS-x magnet 510 allows the OIS carrier 310 to move in the x-axis direction perpendicular to the optical axis direction. The OIS-x magnet 510 and the OIS carrier 310 can move together in the x-axis direction.

[0195] 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 300. The OIS-x magnet 510 may be separated from the AF magnet 410. The OIS-x magnet 510 may be disposed in the OIS carrier 310. The OIS-x magnet 510 may be disposed on the outer surface of the OIS carrier 310. The OIS-x magnet 510 may be fixed to the OIS carrier 310. The OIS-x magnet 510 may be coupled to the OIS carrier 310. The OIS-x magnet 510 may be adhered to the OIS carrier 310 with an adhesive. The OIS-x magnet 510 may be disposed within the cover 120. The OIS-x magnet 510 can interact with the OIS-x coil 520. The OIS-x magnet 510 can electromagnetically interact with the OIS-x coil 520. The OIS-x magnet 510 may be disposed at a position corresponding to the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 can face the OIS-x coil 520. The OIS-x magnet 510 may overlap with the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x magnet 510 may overlap with the OIS-x coil 520 in the x-axis direction. The OIS-x magnet 510 can move in the x-axis direction perpendicular to the optical axis.

[0196] The OIS-x magnet 510 may be a two-pole magnet. The OIS-x magnet 510 may include a two-pole magnetized magnet. The OIS-x magnet 510 may include a north pole and a south pole.

[0197] The lens driving device 10 may include an OIS-x coil 520. The OIS driving unit may include an OIS-x coil 520. The OIS-x coil 520 may interact with the OIS-x magnet 510. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction perpendicular to the optical axis. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction through 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 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 may be disposed in the AF carrier 210 .

[0198] In this embodiment, 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 may be disposed in AF shifter 200. OIS-x coil 520 may be fixed to AF shifter 200. OIS-x coil 520 can be coupled to AF shifter 200.

[0199] The lens driving device 10 may include an OIS-x sensor 530. The OIS driving unit may include the OIS-x sensor 530. The OIS-x sensor 530 may be disposed on the inner substrate 720. The OIS-x sensor 530 may include a Hall sensor. The OIS-x sensor 530 can sense the OIS-x magnet 510. The OIS-x sensor 530 can sense the magnetic force of the OIS-x magnet 510. The OIS-x sensor 530 may be disposed below the OIS-x magnet 510. The OIS-x sensor 530 may overlap with the OIS-x magnet 510 in the optical axis direction. As a variant, the OIS-x sensor 530 may be disposed within the OIS-x coil 520. The OIS-x sensor 530 may overlap with the OIS-x coil 520 in the optical axis direction. 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 can 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 can be used as feedback for driving the image stabilization in the x-axis direction.

[0200] The lens driving device 10 may include an OIS-x yoke 540. The OIS-x yoke 540 may be disposed on the OIS-x magnet 510. The OIS-x yoke 540 may be disposed between the OIS-x magnet 510 and the OIS carrier 310. The OIS-x yoke 540 can prevent magnetic flux leakage from the OIS-x magnet 510 and improve the interaction force with the OIS-x coil 520.

[0201] The lens driving device 10 may include an OIS-y driving unit 600. The OIS driving unit may include the OIS-y driving unit 600. The OIS-y driving unit 600 may move the OIS carrier 310 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction. The OIS-y driving unit 600 may move the OIS carrier 310 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis direction, via electromagnetic force. The OIS-y driving unit 600 may include a coil and a magnet.

[0202] In this embodiment, the OIS-y magnet 610 and the OIS-y coil 620 may move the OIS moving unit 300 in a second direction perpendicular to the optical axis direction and the first direction. In this case, the second direction may be the y-axis direction. The interaction between the OIS-y coil 620 and the OIS-y magnet 610 allows the OIS carrier 310 to move in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y magnet 610 and the OIS carrier 310 can move together in the y-axis direction. The OIS-y magnet 610 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.

[0203] The lens driving device 10 may include an OIS-y magnet 610. The OIS-y driving unit 600 may include an OIS-y magnet 610. The OIS-y magnet 610 may be an "OIS-y magnet." The OIS-y magnet 610 may be a permanent magnet. The OIS-y magnet 610 may be disposed in the OIS moving unit 300. The OIS-y magnet 610 may be spaced apart from the OIS-x magnet 510. The OIS-y magnet 610 may be spaced apart from the AF magnet 410. The OIS-y magnet 610 may be disposed in the OIS carrier 310. The OIS-y magnet 610 may be disposed on the outer surface of the OIS carrier 310. The OIS-y magnet 610 may be fixed to the OIS carrier 310. The OIS-y magnet 610 may be coupled to the OIS carrier 310. The OIS-y magnet 610 may be adhered to the OIS carrier 310 with an adhesive. The OIS-y magnet 610 may be disposed within the cover 120. The OIS-y magnet 610 may interact with the OIS-y coil 620. The OIS-y magnet 610 may electromagnetically interact with the OIS-y coil 620. The OIS-y magnet 610 may be disposed at a position corresponding to the OIS-y coil 620. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may overlap with the OIS-y coil 620 in a direction perpendicular to the optical axis. The OIS-y magnet 610 may overlap with the OIS-y coil 620 in the y-axis direction. The OIS-y magnet 610 may move in the y-axis direction.

[0204] 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.

[0205] The lens driving device 10 may include an OIS-y coil 620. The OIS-y driving unit 600 may include an OIS-y coil 620. The OIS-y coil 620 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 may overlap the OIS-y magnet 610 in a direction perpendicular to the optical axis. The OIS-y coil 620 may be disposed on the inner substrate 720. The OIS-y coil 620 may be disposed on the AF carrier 210.

[0206] In this embodiment, the OIS-y coil 620 can move together with the AF movement section 200. The OIS-y coil 620 can move in the optical axis direction together with the AF movement section 200. During the AF driving process, the OIS-y coil 620 can move in the optical axis direction together with the AF movement section 200. The OIS-y coil 620 may be disposed in the AF movement section 200. The OIS-y coil 620 may be fixed to the AF movement section 200. The OIS-y coil 620 can be coupled to the AF movement section 200.

[0207] The lens driving device 10 may include an OIS-y sensor 630. The OIS-y driving unit 600 may include an OIS-y sensor 630. The OIS-y sensor 630 may be disposed on the inner substrate 720. The OIS-y sensor 630 may include a Hall sensor. The OIS-y sensor 630 can sense the OIS-y magnet 610. The OIS-y sensor 630 can sense the magnetic force of the OIS-y magnet 610. The OIS-y sensor 630 may be disposed below the OIS-y magnet 610. The OIS-y sensor 630 may overlap with the OIS-y magnet 610 in the optical axis direction. The OIS-y sensor 630 may overlap with the OIS-y magnet 610 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 can sense the movement of the OIS-y magnet 610. The amount of movement or position of the OIS-y magnet 610 sensed by the OIS-y sensor 630 can be used as feedback for driving the image stabilization in the y-axis direction.

[0208] The lens driving device 10 may include an OIS-y yoke 640. The OIS-y yoke 640 may be disposed on the OIS-y magnet 610. The OIS-y yoke 640 may be disposed between the OIS-y magnet 610 and the OIS carrier 310. The OIS-y yoke 640 can prevent magnetic flux leakage from the OIS-y magnet 610 and improve the interaction force with the OIS-y coil 620.

[0209] When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order on an imaginary straight line. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order on an imaginary straight line. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in this order in the y-axis direction. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may overlap in the y-axis direction.

[0210] 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.

[0211] The lens driving device 10 may include an outer substrate 710. The outer substrate 710 may be disposed on the base 110. The outer substrate 710 may be electrically connected to the coils 420, 520, and 620. The outer substrate 710 may be electrically connected to the sensors 430, 530, and 630. The outer substrate 710 may connect the AF carrier 210 to the base 110. The outer substrate 710 may elastically connect the AF carrier 210 to the base 110. The outer substrate 710 may connect the fixed part 100 to the inner substrate 720. The outer substrate 710 may support the AF carrier 210 movably relative to the base 110. The outer substrate 710 may guide the AF carrier 210 to move in the optical axis direction relative to the base 110. The outer substrate 710 may include a flexible substrate. The outer substrate 710 may include a flexible printed circuit board (FPCB). The outer substrate 710 may include an elastic portion. The outer substrate 710 may include an elastic member. The outer substrate 710 may include an outer portion 711 disposed on the fixing portion 100, and a connecting portion 712 extending from the outer portion 711 and connecting to the inner substrate 720.

[0212] 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.

[0213] The terminal portion may include a terminal 711-1. The outer substrate 710 may include a terminal 711-1. The outer portion 711 of the outer substrate 710 may include a terminal 711-1. The terminal 711-1 may be electrically connected to the terminal 712-1. The terminal 711-1 may be disposed at a lower end of the base 110. The terminal 711-1 may be coupled to the printed circuit board 50. The terminal 711-1 may be coupled to the terminal of the printed circuit board 50 via solder. The terminal 711-1 may be coupled to the terminal of the printed circuit board 50 via a conductive member. The terminal 711-1 may be coupled to the terminal of the printed circuit board 50. The terminal 711-1 may be electrically connected to the terminal of the printed circuit board 50.

[0214] 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 arranged to move along the optical axis direction. The connecting portion 712 of the outer substrate 710 may be coupled to the inner substrate 720 so that the inner substrate 720 is movable along the optical axis direction. At least a portion of the connecting portion 712 may be arranged parallel to the optical axis direction.

[0215] The link 712 may include multiple linkages. The linkage 712 may include a first linkage and a second linkage. The second linkage may be located below the first linkage.

[0216] 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.

[0217] The outer substrate 710 may include a bent portion 712-2. The bent portion 712-2 may be formed in the connecting portion 712. The bent portion 712-2 may be formed in each of the first connecting portion and the second connecting portion. The bent portion 712-2 may include a shape bent at least twice. The bent portion 712-2 may include a shape bent into a U-shape. The bent portion 712-2 may include a round shape. The bent portion 712-2 may include a portion arranged parallel to the optical axis.

[0218] 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."

[0219] 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 outer substrate 720 may include an elastic portion. The outer substrate 720 may include an elastic member.

[0220] The inner substrate 720 can be coupled to the lower surface of the holder member 220. The preload member 230 can be coupled to the inner substrate 720.

[0221] The inner substrate 720 may include a side plate portion 721. The side plate portion 721 may be arranged on a side surface of the AF carrier 210. The side plate portion 721 may be arranged on an outer surface of the AF carrier 210. In another embodiment, the side plate portion 721 may be arranged on an inner surface of the AF carrier 210. The side plate portion 721 of the inner substrate 720 may include a plurality of portions. The side plate portion 721 may include first to fourth portions.

[0222] 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.

[0223] The inner substrate 720 may include a second portion. The second portion may be arranged on the opposite side of the first portion. The second portion may be arranged on the AF carrier 210. The second portion may be arranged on a second side of the AF carrier 210. The OIS-y coil 620 may be arranged on the second portion of the inner substrate 720. The OIS-y sensor 630 may be arranged on the second portion of the inner substrate 720. More specifically, the OIS-y sensor 630 may be arranged on the lower plate portion 722 that is bent and arranged above the second portion of the inner substrate 720. The OIS-y sensor 630 may be arranged on the lower surface of the lower plate portion 722.

[0224] Inner substrate 720 may include a third portion. The third portion may be disposed on AF carrier 210. The third portion may be disposed on a third side surface of AF carrier 210. OIS-x coil 520 may be disposed on the third portion of inner substrate 720. OIS-x sensor 530 may be disposed on the third portion of inner substrate 720. More specifically, OIS-x sensor 530 may be disposed on lower plate portion 722 that is bent and disposed above the third portion of inner substrate 720. OIS-x sensor 530 may be disposed on the lower surface of lower plate portion 722.

[0225] 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 210. The fourth portion may be disposed on a fourth side of the AF carrier 210.

[0226] 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. The terminal 721-1 may be coupled to a terminal 712-1 of the outer substrate 710.

[0227] The inner substrate 720 may include a terminal 722-1. The terminal 722-1 may be disposed on the lower plate portion 722 of the inner substrate 720. The terminal 722-1 may be electrically connected to the coils 420, 520, and 620. The terminal 722-1 may be electrically connected to the sensors 430, 530, and 630. The terminal 722-1 may be coupled to the terminal 712-1 of the outer substrate 710.

[0228] The inner substrate 720 may include a hole 722-2 through which a terminal 722-1 of the inner substrate 720 may be soldered to a terminal 712-1 of the outer substrate 710.

[0229] 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.

[0230] The lens driving device 10 may include an AF guide ball 810. The AF guide ball 810 can guide the movement of the AF movement unit 200 relative to the fixed unit 100 in the optical axis direction. The AF guide ball 810 can guide the movement of the AF carrier 210 relative to the base 110 in the optical axis direction. The AF guide ball 810 may be disposed between the fixed unit 100 and the AF movement unit 200. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210. The AF guide ball 810 may be disposed between the housing and the base 110. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210 in the x direction. Alternatively, the AF guide ball 810 may be disposed between the base 110 and the AF carrier 210 in the y direction. The AF guide ball 810 may be disposed in a groove in the base 110. The AF guide ball 810 may be disposed in a groove in the AF carrier 210. The AF guide ball 810 may be spherical. The AF guide ball 810 may be made of metal. Grease may be applied to the surface of the AF guide ball 810.

[0231] The AF guide balls 810 may be arranged at a first corner of the base 110. The AF guide balls 810 may be arranged at a second corner diagonally opposite the first corner of the base 110. The AF guide balls 810 may be arranged at both the first and second corners of the base 110. The first and second corner regions of the fixed part 100 may be arranged diagonally opposite each other with respect to the optical axis. The AF guide balls 810 may be arranged at both the first and second corner regions of the fixed part 100. Two sets of AF guide balls 810 may be arranged at each of the first and second corners of the base 110. In this case, one set may include four balls. The two sets may be arranged on opposite sides of the pillars of the AF carrier 210.

[0232] As a modification, the AF guide balls 810 may be arranged at the first and third corners, or the AF guide balls 810 may be arranged at the first and fourth corners. In other words, the AF guide balls 810 do not have to be arranged diagonally.

[0233] The AF guide ball 810 may include a first unit ball disposed in a first corner region of the fixed part 100 when viewed from above, and a second unit ball disposed in a second corner region diagonally disposed in the first corner region of the fixed part 100. In this case, the OIS guide ball 820 may include a first guide member and a second guide member spaced apart from each other when viewed from above and disposed between the first and second unit balls of the AF guide ball 810 in the diagonal direction.

[0234] The AF guide balls 810 may include, when viewed from above, first and second unit balls arranged in a first corner region of the fixed part 100, and third and fourth unit balls arranged in a second corner region diagonally opposite the first corner region of the fixed part 100. Two sets of the AF guide balls 810 may be arranged at each corner.

[0235] The AF guide ball 810 may include a ball that overlaps with the OIS guide ball 820 in a direction perpendicular to the optical axis direction. At least a portion of the AF guide ball 810 may overlap with the OIS guide ball 820.

[0236] The AF guide ball 810 may include an inner ball 811. The inner ball 811 may be disposed in the pillar portion 111 of the base 110. The inner ball 811 may be disposed in the inner groove 111-1 of the base 110. The inner ball 811 may be disposed in the inner groove 224-1 of the AF carrier 210. The inner ball 811 may be disposed in the inner groove 224-1 of the AF moving unit 200. The inner ball 811 may be disposed in the inner groove 111-1 of the base 110 and the inner groove 224-1 of the AF carrier 210. The inner ball 811 may be disposed between the inner groove 111-1 of the base 110 and the inner groove 224-1 of the AF carrier 210. The inner ball 811 may be disposed between the AF moving unit 200 and the pillar portion 111 of the fixed unit 100.

[0237] The AF guide ball 810 may include an outer ball 812. The outer ball 812 may be disposed on the outer wall portion 112 of the base 110. The outer ball 812 may be disposed in the outer groove 112-1 of the base 110. The outer ball 812 may be disposed in the outer groove 224-2 of the AF carrier 210. The outer ball 812 may be disposed in the outer groove 112-1 of the base 110 and the outer groove 224-2 of the AF carrier 210. The outer ball 812 may be disposed between the outer groove 112-1 of the base 110 and the outer groove 224-2 of the AF carrier 210. The outer ball 812 may be disposed between the outer groove 112-1 of the fixed portion 100 and the outer groove 224-2 of the AF moving portion 200. The outer ball 812 may be disposed between the outer wall portion 112 of the fixed portion 100.

[0238] The inner balls 811 may include a plurality of inner balls 811. The plurality of inner balls 811 may be arranged in the optical axis direction. The inner balls 811 may include four inner balls 811. The inner balls 811 may include first to fourth inner balls. Of the four inner balls 811, two may have large diameters and the remaining two may have small diameters. The two balls with large diameters may be arranged at the top and bottom. In other words, two balls with small diameters may be arranged between two balls with large diameters.

[0239] The inner balls 811 may include an inner uppermost ball 811-1. The inner uppermost ball 811-1 may be disposed highest among the inner balls 811. The inner uppermost ball 811-1 may be disposed closest to the upper plate 121 of the cover 120 among the inner balls 811. The inner balls 811 may include an inner lowermost ball 811-2. The inner lowermost ball 811-2 may be disposed lowest among the inner balls 811. The inner lowermost ball 811-2 may be disposed closest to the lower plate portion of the base 110 among the inner balls 811. The multiple inner balls 811 may include balls having diameters smaller than the inner uppermost ball 811-1 and the inner lowermost ball 811-2. The multiple inner balls 811 may include balls disposed between the inner uppermost ball 811-1 and the inner lowermost ball 811-2.

[0240] The outer balls 812 may include a plurality of outer balls 812. The plurality of outer balls 812 may be arranged in the optical axis direction. The outer balls 812 may include four outer balls 812. The outer balls 812 may include first to fourth outer balls. Of the four outer balls 812, two may have large diameters and the remaining two may have small diameters. The two balls with large diameters may be arranged at the top and bottom. In other words, two balls with small diameters may be arranged between two balls with large diameters.

[0241] The outer balls 812 may include an outer uppermost ball 812-1. The outer uppermost ball 812-1 may be disposed highest among the outer balls 812. The outer uppermost ball 812-1 may be disposed closest to the upper plate 121 of the cover 120 among the outer balls 812. The outer balls 812 may include an outer lowermost ball 812-2. The outer lowermost ball 812-2 may be disposed lowest among the outer balls 812. The outer lowermost ball 812-2 may be disposed closest to the lower plate portion of the base 110 among the outer balls 812. The multiple outer balls 812 may include balls having diameters smaller than the outer uppermost ball 812-1 and the outer lowermost ball 812-2. The multiple outer balls 812 may include balls disposed between the outer uppermost ball 812-1 and the outer lowermost ball 812-2.

[0242] The AF guide balls 810 may include a plurality of balls arranged in the optical axis direction. In this case, the plurality of balls may include uppermost balls 811-1 and 812-1 arranged at the highest position and lowermost balls 811-2 and 812-2 arranged at the lowest position. The height of the point at which the elastic member 920 presses the plate member 910 may be between the heights of the uppermost balls 811-1 and 812-1 and the height of the lowermost balls 811-2 and 812-2.

[0243] 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 310 relative to the AF carrier 210 in a direction perpendicular to the optical axis. The OIS guide ball 820 may be disposed between the AF movement unit 200 and the OIS movement unit 300. The OIS guide ball 820 may be disposed between the AF carrier 210 and the OIS carrier 310. The OIS guide ball 820 may be disposed between the AF carrier 210 and the lower side of the OIS carrier 310. The OIS guide ball 820 may be disposed between the housing and the bobbin. The OIS guide ball 820 may be disposed between the housing and the lower side of the bobbin. The OIS guide ball 820 may be disposed between the AF carrier 210 and the OIS carrier 310 in the optical axis direction.

[0244] The OIS guide ball 820 may be arranged in the protruding portion 231 of the preload member 230. The OIS guide ball 820 may be arranged in the groove 232 of the protruding portion 231. The OIS guide ball 820 may be arranged in the groove 311 of the OIS movement section 300. The OIS guide ball 820 may be arranged between the groove 232 of the protruding portion 231 of the AF movement section 200 and the groove 311 of the OIS movement section 300.

[0245] The OIS guide ball 820 may be disposed between the preload material 230 of the AF carrier 210 and the OIS carrier 310. The OIS guide ball 820 may be pressed between the AF carrier 210 and the OIS carrier 310 by the pressing force of the elastic members 830 and 850. The preload material 230 may press the OIS guide ball 820 upward during the process of coupling to the holder member 220. The preload material 230 may press the OIS guide ball 820 toward the OIS carrier 310 during the process of coupling to the holder member 220. At this time, the restoring force of the elastic members 830 and 850 allows the OIS carrier 310 to press the OIS guide ball 820 toward the preload material 230. As a result, the OIS guide ball 820 may be pressed between the preload material 230 and the OIS carrier 310.

[0246] The OIS guide ball 820 can guide the OIS moving unit 300 to move in the x-axis and y-axis directions. The OIS guide ball 820 can guide the movement of the OIS moving unit 300 in the x-axis and y-axis directions. The OIS guide ball 820 can guide the OIS carrier 310 to move in the x-axis and y-axis directions, which are perpendicular to the optical axis direction, relative to the AF carrier 210. That is, the OIS guide ball 820 can guide the OIS carrier 310 to move in the x-axis and y-axis directions. That is, 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 in the x-axis direction and a ball guiding in the y-axis direction are separately provided, this embodiment in which a ball guiding in the x-axis direction and a ball guiding in the y-axis direction are integrally provided may minimize the size of the lens driving device 10. In particular, the height of the lens driving device 10 in the optical axis direction may be reduced. This may minimize the height protruding from the smartphone, i.e., the shoulder height. The OIS guide ball 820 may include multiple balls. The OIS guide ball 820 can include four balls.

[0247] Alternatively, OIS guide ball 820 may include separate balls for guiding x-axis direction drive and y-axis direction drive.

[0248] The lens driving device 10 may include an elastic member. The elastic member may be formed to support OIS drive. The elastic member can support movement of the OIS moving unit 300. The elastic member may be formed to pressurize the OIS guide 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.

[0249] The elastic member can press the OIS guide ball 820 between the AF movement unit 200 and the OIS movement unit 300. The elastic member can press the OIS movement unit 300 toward the AF movement unit 200. The elastic member can press the OIS movement unit 300 toward the OIS movement unit 300. In this case, the elastic member can include an elastic member 830 and a wire 850.

[0250] The lens driving device 10 may include an elastic member 830. The elastic member 830 may be an "upper elastic member." The elastic member 830 may be an "upper spring." The elastic member 830 may be a leaf spring. The elastic member 830 may have elasticity. The elastic member 830 may be disposed on the OIS movement unit 300. The elastic member 830 may be coupled to the OIS movement unit 300. The elastic member 830 may be connected to the OIS movement unit 300. The elastic member 830 may be coupled to the upper surface of the OIS movement unit 300. The elastic member 830 may be disposed on the upper surface of the OIS movement unit 300. The elastic member 830 may be disposed on the upper part of the OIS carrier 310. The elastic member 830 may be disposed on the OIS carrier 310. The elastic member 830 may be disposed on the upper part of the OIS carrier 310. The elastic member 830 may be disposed on the OIS carrier 310. The elastic member 830 may be disposed perpendicular to the optical axis.

[0251] The elastic member 830 may include an inner portion 831. The inner portion 831 may be coupled to the OIS movement portion 300. The elastic member 830 may include an outer portion 832. The outer portion 832 may be coupled to the wire 850. The 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 include elasticity. The connecting portion 833 may be an elastic portion. The connecting portion 833 may be a "leg portion."

[0252] The inner portion 831 of the elastic member 830 may be disposed higher than the outer portion 832. The inner portion 831 of the elastic member 830 may be located higher than the outer portion 832. The inner portion 831 of the elastic member 830 may be disposed higher than the outer portion 832 by about a first distance. The reason why the inner portion 831 of the elastic member 830 is disposed higher than the outer portion 832 may be due to the pressure force of the preload material 230. With this structure, the OIS guide ball 820 can be maintained in contact with the preload material 230 of the AF carrier 210 and the OIS carrier 310.

[0253] OIS carrier 310 may include a first region coupled to elastic member 830. Wire 850 may include a second region coupled to elastic member 830. The first region of OIS carrier 310 may be located above the second region of wire 850. The first region of OIS carrier 310 may be located 0.2 to 0.6 mm above the second region of wire 850. The first region of OIS carrier 310 may be located 0.3 to 0.5 mm above the second region of wire 850.

[0254] 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 elastic member 830 and the AF carrier 210. The wire 850 may connect the elastic member 830 and the lower side of the AF carrier 210. The wire 850 may connect the elastic member 830 and the housing. The wire 850 may connect the elastic member 830 and the lower side of the housing. The wire 850 may elastically connect the elastic member 830 and the AF carrier 210. The wire 850 may connect the elastic member 830 and the metal member 225 of the AF carrier 210. The wire 850 may elastically connect the elastic member 830 and the metal member 225 of the AF carrier 210. The wire 850 may be arranged parallel to the optical axis. The wire 850 may be arranged in the direction of the optical axis.

[0255] An upper end of the wire 850 may be coupled to the elastic member 830. A first portion of the wire 850 may be coupled to the elastic member 830. A lower end of the wire 850 may be coupled to the AF moving unit 200. A lower end of the wire 850 may be coupled to the lower surface of the AF moving unit 200. A second portion of the wire 850 may be coupled to the AF moving unit 200. A lower end of the wire 850 may be coupled to the AF carrier 210. A lower end of the wire 850 may be coupled to the holder member 220. A lower end of the wire 850 may be coupled to the metal member 225. A lower end of the wire 850 may be soldered to the metal member 225. A lower end of the wire 850 may be welded to the metal member 225. A lower end of the wire 850 may be coupled to the metal member 225 with conductive epoxy. A lower end of the wire 850 may be coupled to the metal member 225 via a conductive material. The lower end of the wire 850 may be directly connected to the metal member 225. The wire 850 may connect the elastic member 830 and the AF movement unit 200. The wire 850 may connect the elastic member 830 and the AF carrier 210. The wire 850 may connect the elastic member 830 and the holder member 220. The wire 850 may connect the elastic member 830 and the metal member 225. The lens driving device 10 may include a pressure member. The pressure member may be an "AF guide ball pressure member." The pressure member may pressurize the AF guide ball 810. The pressure member may be configured to pressurize the ball. The AF guide ball 810 pressed by the pressure member may be sandwiched between the fixed unit 100 and the AF movement unit 200. The AF guide ball 810 pressed by the pressure member may be sandwiched between the base 110 and the AF carrier 210. The pressure member may be maintained in a state where the AF guide balls 810 are in contact with the fixed part 100 and the AF moving part 200. The pressure member may be maintained in a state where the AF guide balls 810 are in contact with the base 110 and the AF carrier 210.

[0256] The lens driving device 10 may include a plate member 910. The pressure member may include the plate member 910. The plate member 910 may be disposed on the AF guide ball 810. The plate member 910 can contact the AF guide ball 810. The plate member 910 may be disposed on the elastic member 920. The plate member 910 may be disposed on the base 110. The plate member 910 may be disposed between the elastic member 920 and the AF guide ball 810. The plate member 910 can press the AF guide ball 810 toward the AF carrier 210 by the elastic member 920. The plate member 910 may be disposed between the AF guide ball 810 and the fixed part 100. The plate member 910 may be disposed between the inner ball 811 and the pillar part 111 of the fixed part 100.

[0257] The lens driving device 10 may include an elastic member 920. The pressure member may include the elastic member 920. The elastic member 920 may be a spring. The elastic member 920 may be a tapered spring. The elastic member 920 may be disposed on the fixed part 100. The elastic member 920 may press the AF guide ball 810 toward the AF moving part 200. The elastic member 920 may press the plate member 910 toward the AF guide ball 810. The elastic member 920 may be disposed between the plate member 910 and the fixed part 100. The elastic member 920 may push the plate member 910 toward the fixed part 100. The elastic member 920 may press the plate member 910 in the opposite direction to the fixed part 100. The elastic member 920 may be disposed between the plate member 910 and the pillar part 111 of the fixed part 100. The elastic member 920 may be disposed in the inner groove 111-1 of the fixed part 100. The elastic member 920 can pressurize the AF guide ball 810 between the fixed part 100 and the AF moving part 200 .

[0258] As a modified example, the elastic member 920 may be disposed in the AF movement unit 200. In this case, the elastic member 920 can press the AF guide ball 810 toward the fixed unit 100. The elastic member 920 is disposed in one of the fixed unit 100 and the AF movement unit 200 and can press the AF guide ball 810 toward the other of the fixed unit 100 and the AF movement unit 200. The elastic member 920 can press the plate member 910. The elastic member 920 may be disposed between the plate member 910 and the base 110. The elastic member 920 may be disposed between the AF guide ball 810 and the base 110. The elastic member 920 may be disposed in the base 110. The elastic member 920 may be disposed in the inner groove 111-1 of the base 110. The elastic member 920 can press the AF guide ball 810 toward the AF carrier 210. As a result, the AF guide balls 810 can maintain contact between the plate member 910 and the AF carrier 210.

[0259] The elastic member 920 may include a bent portion. The bent portion may include a bent shape. The bent portion may include multiple bent portions. The bent portion may include three bent portions. The elastic member 920 may be bent at least three times. The elastic member 920 may include an upper bent portion 921. The elastic member 920 may include a lower bent portion 922. The elastic member 920 may include a connecting bent portion 923. The connecting bent portion 923 may be disposed between the upper bent portion 921 and the lower bent portion 922. The upper bent portion 921 may form an obtuse angle. The lower bent portion 922 may form an obtuse angle. The connecting bent portion 923 may form an obtuse angle. The upper bent portion 921 may be disposed on the fixing portion 100. The lower bent portion 922 may be disposed on the fixing portion 100. The connecting bent portion 923 may be disposed on the plate member 910. With this structure, the elastic member 920 can push the plate member 910 toward the fixed part 100. The connecting bent part 923 can come into contact with the plate member 910 and press the plate member 910 in the direction of the AF guide ball 810.

[0260] The height of the point where the elastic member 920 presses the plate member 910 may be lower than the height of the lowermost ball among the inner uppermost ball 811-1 and the outer uppermost ball 812-1, and higher than the height of the highermost ball among the inner lowermost ball 811-2 and the outer lowermost ball 812-2. More specifically, when the AF moving unit 200 moves upward as shown in FIG. 36 (a), the height (b) of the point where the elastic member 920 presses the plate member 910 may be higher than the height (a) of the highermost ball among the inner lowermost ball 422 and the outer lowermost ball 412. A gap (c) may exist between the heights of the two points. Furthermore, when the AF moving unit 200 moves downward as shown in FIG. 36 (b), the height (e) of the point where the elastic member 920 presses the plate member 910 may be lower than the height (d) of the lowermost ball among the inner uppermost ball 421 and the outer uppermost ball 411. There may be a height gap (f) between the two points, which may prevent or minimize the generation of a moment caused by the elastic member 920 pressing the plate member 910. In other words, the plate member 910 may be prevented from tilting or coming off.

[0261] The lens driving device 10 may include a reinforcing member 930. The reinforcing member 930 may be disposed on the base 110. The reinforcing member 930 may be disposed to reinforce the strength of the base 110. The reinforcing member 930 can prevent damage to the base 110. The reinforcing member 930 can prevent damage to the column portion 111 of the base 110. The reinforcing member 930 can prevent damage to the outer wall portion 112 of the base 110. The reinforcing member 930 may have elasticity. The reinforcing member 930 may be formed of metal. The reinforcing member 930 may have a shape that is bent at least twice. The reinforcing member 930 may be formed in a U-shape when viewed from above. The reinforcing member 930 may be open on the inside.

[0262] The reinforcing member 930 may include an inner portion 931. The inner portion 931 may be disposed on the opposite side of the inner groove 111-1 of the pillar portion 111 of the fixed portion 100. The reinforcing member 930 may include an outer portion 932. The outer portion 932 may be disposed on the opposite side of the outer groove 112-1 of the outer wall portion 112 of the fixed portion 100. The reinforcing member 930 may include a connecting portion 933. The connecting portion 933 may connect the inner portion 931 and the outer portion 932.

[0263] The lens driving device 10 may include a lid 940. The lid 940 may be disposed on the AF guide ball 810. The lid 940 may overlap the AF guide ball 810 in the optical axis direction. The lid 940 may overlap the inner ball 811 in the optical axis direction. The lid 940 may overlap the outer ball 812 in the optical axis direction. The lid 940 may be disposed on the inner groove 224-1 and the outer groove 224-2 of the AF carrier 210 to prevent the AF guide ball 810 from coming off upward.

[0264] In this embodiment, one side of the wire 850 is connected to the AF moving unit 200, which is fixed when the OIS is driven, so that the vibration characteristic of the wire 850 at the mass point can be reduced.

[0265] In this embodiment, the base 110, pre-load material 230, inner substrate 720, holder member 220, and OIS carrier 310 may be arranged in this order from bottom to top. In this embodiment, the base 110, pre-load material 230, inner substrate 720, holder member 220, and OIS carrier 310 may be stacked in this order from bottom to top. In this embodiment, a stable bonding surface with the lens module 20 can be ensured via the stacking direction. In this embodiment, as shown in FIG. 27 , the rib 21 of the lens module 20 may be arranged in the groove 313 of the OIS carrier 310.

[0266] The configuration of the lens driving device according to the modified example will be described below with reference to the drawings.

[0267] Fig. 37 is a cross-sectional view of a lens driving device according to a modified example. Fig. 38 is a perspective view illustrating a base and a base cushioning member of a lens driving device according to a modified example. Fig. 39 is a perspective view illustrating a cover and a cover cushioning member of a lens driving device according to a modified example. Fig. 40 is a perspective view illustrating a lid and a lid cushioning member of a lens driving device according to a modified example.

[0268] The lens driving device according to the modified example may include a base cushioning member 960. The base cushioning member 960 may be disposed on the base 110. The base cushioning member 960 may be fixed to the base 110. The base cushioning member 960 may be coupled to the base 110. The base cushioning member 960 may be adhered to the base 110 with an adhesive. The base cushioning member 960 may be disposed on the upper surface of the base 110. The base cushioning member 960 can minimize the impact of the AF moving unit 200 hitting the base 110.

[0269] At least a portion of the base cushioning member 960 may be disposed between the preload material 230 and the base 110 in the optical axis direction. At least a portion of the base cushioning member 960 may be disposed between the preload material 230 and the base 110. The base cushioning member 960 may include poron.

[0270] The lens driving device according to the modified example may include a cover buffer member 970. The cover buffer member 970 may be disposed on the cover 120. The cover buffer member 970 may be disposed on the upper plate 121 of the cover 120. The cover buffer member 970 may be fixed to the upper plate 121 of the cover 120. The cover buffer member 970 may be coupled to the upper plate 121 of the cover 120. The cover buffer member 970 may be adhered to the upper plate 121 of the cover 120 with an adhesive. The cover buffer member 970 may be disposed on the lower surface of the upper plate 121 of the cover 120. The cover buffer member 970 can minimize the impact when the AF moving unit 200 hits the cover 120.

[0271] At least a portion of the cover buffer member 970 may be disposed in the optical axis direction between the upper plate 121 of the cover 120 and the AF moving unit 200. At least a portion of the cover buffer member 970 may be disposed between the upper plate 121 of the cover 120 and the AF moving unit 200. The cover buffer member 970 may include poron.

[0272] The lens driving device according to the modified example may include a lid cushioning member 980. The lid cushioning member 980 may be disposed on the lid 240. The lid cushioning member 980 may be fixed to the lid 240. The lid cushioning member 980 may be coupled to the lid 240. The lid cushioning member 980 may be adhered to the lid 240 with an adhesive. The lid cushioning member 980 may be disposed on the underside of the lid 240. The lid cushioning member 980 can minimize the impact when the OIS moving unit 300 hits the lid 240.

[0273] At least a portion of the lid cushioning member 980 may be disposed in the optical axis direction between the lid 240 and the OIS movement unit 300. At least a portion of the lid cushioning member 980 may be disposed between the lid 240 and the OIS movement unit 300. The lid cushioning member 980 may include poron.

[0274] Hereinafter, autofocus (AF) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0275] 41 to 43 are diagrams illustrating autofocus driving of the lens driving device according to this embodiment. Fig. 41 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. 42 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. 43 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.

[0276] 41 , the moving unit may be disposed at a position spaced apart from both the upper plate 121 of the cover 120 and the base 110 from an initial position where no current is applied to the AF coil 420. In this case, the moving unit may be the AF moving unit 200. Furthermore, the moving unit may include the AF moving unit 200 and the OIS moving unit 300.

[0277] 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. 42). At this time, the AF carrier 210 can move upward in the optical axis direction together with the AF coil 420. Furthermore, the OIS carrier 310 and the lens can move upward in the optical axis direction together with the AF carrier 210. This changes the distance between the lens and the image sensor, and the focus of the image formed on the image sensor via the lens may be adjusted.

[0278] 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. 43). At this time, the AF carrier 210 can move downward in the optical axis direction together with the AF coil 420. Furthermore, the OIS carrier 310 and the lens can move downward in the optical axis direction together with the AF carrier 210. This changes the distance between the lens and the image sensor, and the focus of the image formed on the image sensor via the lens may be adjusted.

[0279] Meanwhile, during the movement of AF coil 420, AF sensor 430 moves together with AF coil 420 and senses the strength of the magnetic field of AF magnet 410, thereby detecting the amount of movement and position of the lens in the optical axis direction. The amount of movement and position of the lens in the optical axis direction detected by AF sensor 430 can be used for autofocus feedback control.

[0280] Hereinafter, optical image stabilization (OIS) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0281] 44 to 46 are diagrams illustrating the image stabilization drive of the lens driving device according to this embodiment. Fig. 44 is a cross-sectional view illustrating the state of the OIS moving unit in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig. 45 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil and the OIS moving unit moves in the x-axis direction perpendicular to the optical axis. Fig. 46 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the OIS moving unit moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0282] 44, the moving section may be placed in the initial position with no current applied to the OIS-x coil 520 and the OIS-y coil 620. In this case, the moving section may be the OIS moving section 300.

[0283] 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. 45 ). At this time, the OIS carrier 310 moves in the x-axis direction together with the OIS-x magnet 510. Furthermore, the lens moves in the x-axis direction together with the OIS carrier 310. More specifically, when a forward current is applied to the OIS-x coil 520, the OIS-x magnet 510, OIS carrier 310, and lens move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 520, the OIS-x magnet 510, OIS carrier 310, and lens move in the other direction on the x-axis.

[0284] 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. 46 ). At this time, the OIS carrier 310 can move in the y-axis direction together with the OIS-y magnet 610. Furthermore, the lens can move in the y-axis direction together with the OIS carrier 310. More specifically, when a forward current is applied to the OIS-y coil 620, the OIS-y magnet 610, OIS carrier 310, and lens can move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 620, the OIS-y magnet 610, OIS carrier 310, and lens can move in the other direction on the y-axis.

[0285] 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.

[0286] Hereinafter, a camera device according to this embodiment will be described with reference to the drawings.

[0287] FIG. 47 is an exploded perspective view of the camera device according to this embodiment.

[0288] The camera device 10A may include a camera module.

[0289] The camera device 10A may include a lens module 20. The lens module 20 may include at least one lens. The lens may be disposed at a position corresponding to the image sensor 60. The lens module 20 may include a lens and a barrel. The lens module 20 may be coupled to an OIS carrier 310 of the lens driving device 10. The lens module 20 may be coupled to the OIS carrier 310 by screws and / or adhesive. The lens module 20 may move integrally with the OIS carrier 310.

[0290] The camera device 10A may include a filter 30. The filter 30 may serve to block light of a specific frequency band from entering the image sensor 60, among light passing through the lens module 20. The filter 30 may be arranged parallel to the xy plane. The filter 30 may be arranged between the lens module 20 and the image sensor 60. The filter 30 may be arranged on the sensor base 40. Alternatively, the filter 30 may be arranged on the base 110. The filter 30 may include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 60.

[0291] 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 110 of the lens driver 10 to the sensor base 40. The adhesive member may also serve to prevent foreign matter from entering the interior of the lens driver 10. The adhesive member may include any one or more of epoxy, a heat-curable adhesive, and an ultraviolet-curable adhesive.

[0292] The camera device 10A may include a printed circuit board (PCB) 50. The printed circuit board 50 may be a substrate or a circuit board. The lens driver 10 may be disposed on the printed circuit board 50. A sensor base 40 may be disposed between the printed circuit board 50 and the lens driver 10. The printed circuit board 50 may be electrically connected to the lens driver 10. An image sensor 60 may be disposed on the printed circuit board 50. The printed circuit board 50 may include various circuits, elements, a control unit, etc. for converting an image formed on the image sensor 60 into an electrical signal and transmitting the signal to an external device.

[0293] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured to form an image by receiving light that has passed through a lens and a filter 30. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. For example, the image sensor 60 may be attached to the printed circuit board 50 using surface mounting technology (SMT). For another example, the image sensor 60 may be attached to the printed circuit board 50 using flip chip technology. The image sensor 60 may be disposed so that its optical axis coincides with that of a lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens may be aligned. The image sensor 60 may convert light irradiated onto an effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 may be any one of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

[0294] 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 through 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.

[0295] 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.

[0296] 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.

[0297] Hereinafter, an optical device according to this embodiment will be described with reference to the drawings.

[0298] FIG. 48 is a perspective view of the optical device according to this embodiment, and FIG. 49 is a perspective view of the optical device according to a modified example.

[0299] 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 videos or photos.

[0300] 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 of the main body 20 and a second surface opposite the first surface. As shown in FIG. 48, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 49, the camera device 10A-1 may have triple cameras arranged horizontally.

[0301] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and are not limiting.

Claims

1. Base; a housing disposed on the base; a bobbin disposed within the housing; a first ball disposed between the housing and the base; a second ball disposed between the housing and the underside of the bobbin; a resilient member coupled to the top side of the bobbin; and a wire connecting the elastic member to the underside of the housing;

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 housing includes a second guide on a side surface thereof for guiding the first ball so that the first ball moves.

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

5. The lens driving device according to claim 1 , wherein the housing comprises a first housing including a lower plate having a metal member, and a second housing having a protrusion coupled to the first housing to guide the second ball.

6. a first substrate disposed between the first housing and the second housing; the first substrate is coupled to a lower surface of the first housing; The lens driving device according to claim 5 , wherein the second housing is coupled to the first substrate.

7. The lens driving device according to claim 5 , wherein the second housing contacts the second ball and applies pressure to a portion of the elastic member.

8. the elastic member includes an inner portion coupled to the bobbin, an outer portion coupled to the wire, and a connecting portion connecting the inner portion and the outer portion, The lens driving device according to claim 1 , wherein the inner portion of the elastic member is positioned above the outer portion.

9. the bobbin includes a first region coupled to the elastic member; the wire includes a second region that couples with the elastic member; The lens driving device according to claim 1 , wherein the first region of the bobbin is located above the second region of the wire.

10. Fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a first drive unit that moves the first moving unit in the optical axis direction; a second drive unit that moves the second moving unit in a direction perpendicular to the optical axis direction; a first ball disposed between the first moving part and the second moving part; an elastic member coupled to the upper surface of the second moving portion; and a wire disposed in the optical axis direction; The upper end of the wire is connected to the elastic member, A lens driving device, wherein a lower end of the wire is coupled to a lower surface of the first moving part.

Images