Lens drive device, camera device and optical equipment

Abstract

This embodiment relates to a lens driving device that includes a fixed part; a first moving part arranged on the fixed part; a second moving part arranged within the first moving part; a third moving part arranged within the second moving part; a first driving part that moves the first moving part in a first direction perpendicular to the optical axis direction; a second driving part that moves the second moving part in a second direction perpendicular to the optical axis direction and the first direction; and a third driving part that moves the third moving part in the optical axis direction, wherein the first driving part includes a first magnet arranged on the fixed part and a first coil arranged on the first moving part, and the second driving part includes a second magnet arranged on the second moving part and a second coil arranged on the first moving part.

Description

[Technical Field]

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

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

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

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

[0005] However, in conventional lens driving devices, the magnet and coil for performing the image stabilization function are arranged in a moving part, and the coil, which does not require electrical connection, is arranged in a fixed part. In this case, the magnet, which is heavier than the coil, is arranged in the moving part, which causes a problem of increased current consumption for performing the image stabilization 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 order to arrange components such as magnets and coils for performing the autofocus function and image stabilization function, a size larger than the thickness of the smartphone is required in the optical axis direction, which causes a problem that the camera device attached to the smartphone protrudes from other parts of the smartphone. [Prior art documents] [Patent documents]

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

[0009] This embodiment provides a lens driving device that reduces current consumption by arranging a coil, which is lighter in weight than a magnet, in a moving part in a structure for performing an image stabilization function.

[0010] Furthermore, this embodiment provides a camera device that has an autofocus function and an image stabilization function, yet is minimized in size in the optical axis direction. [Means for solving the problem]

[0011] The lens driving device of this embodiment includes a fixed section; a first moving section arranged on the fixed section; a second moving section arranged within the first moving section; a third moving section arranged within the second moving section; a first driving section that moves the first moving section in a first direction perpendicular to the optical axis direction; a second driving section that moves the second moving section in a second direction perpendicular to the optical axis direction and the first direction; and a third driving section that moves the third moving section in the optical axis direction, wherein the first driving section may include a first magnet arranged on the fixed section and a first coil arranged on the first moving section, and the second driving section may include a second magnet arranged on the second moving section and a second coil arranged on the first moving section.

[0012] The third driving section may include a third magnet arranged on the third moving section, and a third coil arranged on the second moving section.

[0013] The lens driving device may include a first ball disposed between the fixed portion and the first moving portion in the second direction.

[0014] The lens driving device may include a second ball disposed between the first moving portion and the second moving portion in the first direction.

[0015] The lens driving device may include a third ball disposed between the second moving portion and the third moving portion in the second direction.

[0016] The fixed portion may include a lower plate and a protrusion protruding from the lower plate, the protrusion of the fixed portion being disposed within the first moving portion, and the first ball being disposed on the protrusion of the fixed portion.

[0017] The lens driving device may include a first substrate including an outer portion arranged on the fixed portion, an inner portion arranged on the first movable portion, and a connecting portion connecting the outer portion and the inner portion, and at least a portion of the connecting portion of the first substrate may be formed to be movable in the first direction.

[0018] The lens driving device may include a second substrate including an outer portion arranged on the fixed portion, an inner portion arranged on the second movable portion, and a connecting portion connecting the outer portion and the inner portion, and at least a portion of the connecting portion of the second substrate may be formed to be movable in the first direction and the second direction.

[0019] The lens driving device may include a first yoke disposed on the first moving portion and configured to have an attractive force acting on the first magnet.

[0020] The lens driving device may include a second yoke disposed on the first moving portion and configured to exert an attractive force on the second magnet.

[0021] The lens driving device may include a third yoke disposed on the second moving section and configured to generate an attractive force with the third magnet.

[0022] In the lens driving device, the fixed portion may include a base and a cover arranged on the base, the cover may include a first side plate and a second side plate arranged opposite each other, and a third side plate and a fourth side plate arranged opposite each other, and the outer surface of the third magnet may be arranged parallel to the second side plate.

[0023] In the lens driving device, the fixed part may include a base and a cover arranged on the base, the cover may include a first side plate and a second side plate arranged opposite each other, and a third side plate and a fourth side plate arranged opposite each other, and when viewed from above, the outer surface of the third magnet may be arranged at an angle between the second side plate and the fourth side plate.

[0024] 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 third moving part arranged within the second moving part; a first driving part that moves the first moving part in a first direction perpendicular to the optical axis direction; a second driving part that moves the second moving part in a second direction perpendicular to the optical axis direction and the first direction; and a third driving part that moves the third moving part in the optical axis direction, wherein the first moving part includes a first part arranged outside the fixed part, and a ball may be arranged between the first part of the first moving part and the fixed part.

[0025] 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.

[0026] 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]

[0027] In this embodiment, the coil, which is lighter than the magnet, is disposed in the moving part, so that the current consumption for performing the image stabilization function can be reduced.

[0028] Furthermore, the autofocus function and the image stabilization function can be performed with a camera device whose size is minimized in the optical axis direction.

[0029] That is, according to this embodiment, even though the camera device does not protrude from the smartphone, it is possible to perform both the autofocus function and the image stabilization function. [Brief explanation of the drawings]

[0030] [Figure 1] 1 is a conceptual diagram of a lens driving device according to an embodiment of the present invention. [Figure 2] FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along the line BB in FIG. 2. [Figure 5] FIG. 3 is a cross-sectional view taken along CC in FIG. 2. [Figure 6] FIG. 3 is a cross-sectional view taken along the line DD in FIG. 2. [Figure 7] FIG. 3 is a cross-sectional view taken along the line EE in FIG. 2. [Figure 8] FIG. 2 is an exploded perspective view of the lens driving device according to the embodiment. [Figure 9] 9 is an exploded perspective view of the lens driving device according to the present embodiment, seen from a different direction than that of FIG. 8. FIG. [Figure 10] 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. [Figure 11] 11 is a cross-sectional view of the lens driving device according to the present embodiment, taken in a direction perpendicular to the optical axis from above in FIG. 10, as viewed from above. [Figure 12] FIG. 2 is a perspective view of the lens driving device according to the embodiment, with the cover omitted. [Figure 13]FIG. 13 is a perspective view seen from a different direction than that of FIG. [Figure 14] 2 is a perspective view illustrating a fixing portion and related configuration of the lens driving device according to the embodiment. FIG. [Figure 15] 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. [Figure 16] FIG. 2 is a perspective view illustrating an OIS-x moving unit and related configuration of the lens driving device according to the present embodiment. [Figure 17] FIG. 2 is a perspective view illustrating an OIS-x carrier and related coils of the lens driving device according to the present embodiment. [Figure 18] 2 is a perspective view illustrating an outer substrate and associated coils of the lens driving device according to the present embodiment. FIG. [Figure 19] FIG. 2 is a perspective view illustrating an OIS-y moving unit and related configuration of the lens driving device according to the present embodiment. [Figure 20] 2 is a perspective view illustrating an outer substrate and related coils of the lens driving device according to the embodiment. FIG. [Figure 21] 2 is a perspective view illustrating an AF moving unit and related configuration of the lens driving device according to the embodiment. FIG. [Figure 22] FIG. 2 is an exploded perspective view of an OIS-x carrier of the lens driving device according to the present embodiment. [Figure 23] FIG. 2 is an exploded perspective view of the bottom of the OIS-y carrier of the lens driving device according to the embodiment. [Figure 24] FIG. 2 is a cross-sectional perspective view illustrating an OIS-x driving unit and related configuration of the lens driving device according to the present embodiment. [Figure 25] FIG. 2 is a cross-sectional perspective view illustrating an OIS-y driving unit and related configuration of the lens driving device according to the present embodiment. [Figure 26] FIG. 10 is a perspective view of a modified lens driving device with the cover omitted. [Figure 27] 27 is a cross-sectional view of FIG. 26 cut in a direction perpendicular to the optical axis and viewed from above. [Figure 28]FIG. 10 is a cross-sectional view illustrating the state of the moving part in the initial state where no current is applied to the AF coil, illustrating the autofocus drive of the lens driving device according to the present embodiment. [Figure 29] FIG. 10 is a cross-sectional view illustrating the state in which a forward current is applied to the AF coil and the moving part moves upward in the optical axis direction, illustrating the autofocus drive of the lens driving device according to the present embodiment. [Figure 30] FIG. 10 is a cross-sectional view illustrating the autofocus drive of the lens drive device according to the present embodiment, in which a reverse current is applied to the AF coil and the moving part moves downward in the optical axis direction. [Figure 31] FIG. 10 is a cross-sectional view illustrating the state of the moving part in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil, illustrating the image stabilization driving of the lens driving device according to the present embodiment. [Figure 32] FIG. 10 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil and the moving part moves in the x-axis direction perpendicular to the optical axis, for explaining the image stabilization driving of the lens driving device according to the present embodiment. [Figure 33] FIG. 10 is a cross-sectional view illustrating the image stabilization drive of the lens driving device according to the present embodiment, in which a current is applied to the OIS-y coil, causing the moving part to move in the y-axis direction perpendicular to both the optical axis and the x-axis. [Figure 34] FIG. 2 is an exploded perspective view of the camera device according to the embodiment. [Figure 35] FIG. 1 is a perspective view of an optical device according to an embodiment of the present invention. [Figure 36] FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0031] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0032] 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.

[0033] Furthermore, unless otherwise clearly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that are commonly understood by a person of ordinary skill in the art to which the present invention belongs, and commonly used terms, such as terms defined in a dictionary, may be interpreted in light of the contextual meaning of the relevant art.

[0034] 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.

[0035] 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 may include one or more of all possible combinations of A, B, and C.

[0036] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. are used to distinguish the component from other components, and the terms do not limit the essence, order, or sequence of the components.

[0037] It should be noted that when a component is described as being "coupled," "coupled," or "connected" to another component, this may 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.

[0038] 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.

[0039] The "optical axis (see OA in FIG. 28) direction" used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0040] 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."

[0041] The "autofocus (AF) function" used below is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens along the optical axis according to the distance of the subject so that a clear image of the subject can be obtained on the image sensor. Furthermore, the "autofocus feedback (CLAF, closed-loop autofocus) control" is defined as sensing the distance between the image sensor and the lens and controlling the lens position in real time with feedback to improve the accuracy of focus adjustment.

[0042] As used below, "optical image stabilization (OIS) function" is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset camera shake in order to prevent blurring of images or videos caused by the user's hand tremors. Furthermore, "closed-loop auto focus (CLAF) control" is defined as a function that senses the position of the lens relative to the image sensor and provides feedback (feedback) to control the lens position in real time to improve the accuracy of camera shake correction.

[0043] Hereinafter, the "OIS-x movement section 200," the "OIS-y movement section 300," and the "AF movement section 400" may be referred to as the "first movement section," the "second movement section," and the "third movement section," respectively.

[0044] Hereinafter, the "OIS-x driver 500," "OIS-y driver 600," and "AF driver 700" may be referred to as the "first driver," "second driver," and "third driver," respectively.

[0045] Hereinafter, the "OIS-x magnet 510," "OIS-y magnet 610," and "AF magnet 710" may be referred to as the "first magnet," "second magnet," and "third magnet," respectively.

[0046] Hereinafter, the "OIS-x coil 520," "OIS-y coil 620," and "AF coil 720" may be referred to as the "first coil," "second coil," and "third coil," respectively.

[0047] Hereinafter, the "AF sensor 530," the "OIS-x sensor 630," and the "OIS-y sensor 730" may be referred to as the "first sensor," the "second sensor," and the "third sensor," respectively.

[0048] Hereinafter, the "OIS-x guide ball 810," "OIS-y guide ball 820," and "AF guide ball 830" may be referred to as the "first ball," "second ball," and "third ball," respectively.

[0049] Hereinafter, one of the "outer substrate 910" and the "inner substrate 920" may be referred to as the "first substrate" and the other as the "second substrate."

[0050] Hereinafter, the "OIS-x yoke 540," "OIS-y yoke 640," "AF yoke 740," "OIS-x ball pressure yoke 860," "OIS-y ball pressure yoke 870," and "AF ball pressure yoke 880" may be referred to as the "first yoke," "second yoke," "third yoke," "fourth yoke," "fifth yoke," and "sixth yoke," respectively.

[0051] The configuration of the lens driving device according to this embodiment will be described below with reference to the drawings.

[0052] 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 a cross-sectional view taken along line CC in FIG. 2. FIG. 6 is a cross-sectional view taken along line DD in FIG. 2. FIG. 7 is a cross-sectional view taken along line EE in FIG. 2. FIG. 8 is an exploded perspective view of the lens driving device according to this embodiment. FIG. 9 is an exploded perspective view of the lens driving device according to this embodiment, seen from a direction different from that of FIG. 8. FIG. 10 is a cross-sectional view of the lens driving device according to this embodiment, cut in a direction perpendicular to the optical axis, as viewed from above. 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, as viewed from above FIG. 10. FIG. 12 is a perspective view of the lens driving device according to this embodiment without a cover. FIG. 13 is a perspective view taken from a direction different from that of FIG. 12. FIG. 14 is a perspective view illustrating a fixed portion and related components of the lens driving device according to this embodiment. FIG. 15 is a perspective view illustrating a moving portion and related components of the lens driving device according to this embodiment. FIG. 16 is a perspective view illustrating an OIS-x moving unit and related components of the lens driving device according to this embodiment. FIG. 17 is a perspective view illustrating an OIS-x carrier and related coils of the lens driving device according to this embodiment. FIG. 18 is a perspective view illustrating an outer substrate and related coils of the lens driving device according to this embodiment. FIG. 19 is a perspective view illustrating an OIS-y moving unit and related components of the lens driving device according to this embodiment. FIG. 20 is a perspective view illustrating an outer substrate and related coils of the lens driving device according to this embodiment. FIG. 21 is a perspective view illustrating an AF moving unit and related components of the lens driving device according to this embodiment. FIG. 22 is an exploded perspective view of the OIS-x carrier of the lens driving device according to this embodiment. FIG. 23 is an exploded perspective view of the bottom of the OIS-y carrier of the lens driving device according to this embodiment. FIG. 24 is a cross-sectional perspective view illustrating the OIS-x driving unit and related components of the lens driving device according to this embodiment. FIG. 25 is a cross-sectional perspective view illustrating the OIS-y driving unit and related components of the lens driving device according to this embodiment.

[0053] 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.

[0054] 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.

[0055] The lens driving device 10 may include a base 110. The fixed unit 100 may include the base 110. The base 110 may be disposed below the AF carrier 210. The base 110 may be disposed below the OIS-y carrier 310. The base 110 may be disposed below the AF carrier 410. The base 110 may be coupled to the cover 120. The OIS-x carrier 210, the OIS-y carrier 310, and the AF carrier 410 may be disposed on the base 110. The OIS-x carrier 210, the OIS-y carrier 310, and the AF carrier 410 may be disposed on a bottom plate 111 of the base 110. The OIS-x carrier 210, the OIS-y carrier 310, and the AF carrier 410 may be disposed within the base 110.

[0056] The base 110 may include a lower plate 111. The base 110 may include a protrusion 112. The protrusion 112 may be a "side portion." The protrusion 112 may be a "side plate." The protrusion 112 may be a "side wall." The protrusion 112 of the base 110 may extend from an upper surface of the lower plate 111. The protrusion 112 of the base 110 may protrude from the lower plate 111. The protrusion 112 of the base 110 may protrude upward from an upper surface of the lower plate 111. The protrusion 112 of the base 110 may be disposed within the OIS-x mover 200. The protrusion 112 of the base 110 may be disposed within the OIS-x carrier 210. The protrusion 112 of the base 110 may be disposed between the OIS-x carrier 210 and the OIS-y carrier 310. The protrusion 112 of the base 110 may be disposed between the OIS-x carrier 210 and the AF carrier 410. The OIS-x guide ball 810 may be disposed on the protrusion 112 of the fixed part 100. The OIS-x magnet 510 may be disposed on the protrusion 112 of the fixed part 100.

[0057] Base 110 may include groove 113. Groove 113 may be an "OIS-x guide ball receiving groove." OIS-x guide ball 810 may be disposed in groove 113. Groove 113 may be in direct contact with OIS-x guide ball 810. Groove 113 may be disposed in a direction perpendicular to the optical axis. Groove 113 may include a plurality of grooves. Groove 113 may include four grooves. The four grooves may be disposed parallel to one another. Groove 113 may include a first groove that contacts OIS-x guide ball 810 at two points and a second groove that contacts OIS-x guide ball 810 at one point. As a variation, both the first groove and the second groove may contact OIS-x guide ball 810 at two points.

[0058] 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.

[0059] The lens driving device 10 may include a cover 120. The fixed portion 100 may include the cover 120. The cover 120 may be disposed on the base 110. The cover 120 may be disposed on the base 110. The cover 120 may be coupled to the base 110. The cover 120 may be fixed to the base 110. The cover 120 can house the OIS-x carrier 210 therein. The cover 120 can house the OIS-y carrier 310 therein. The cover 120 can house the AF carrier 410 therein. The cover 120 may be a shielding member. The cover 120 may be a shielding can.

[0060] 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 holes through which light passes.

[0061] 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.

[0062] The lens driving device 10 may include a moving unit. The moving unit may be arranged on the fixed unit 100. The moving unit may be arranged inside the fixed unit 100. The moving unit may be arranged on the fixed unit 100. The moving unit may be arranged movably on the fixed unit 100. The moving unit may be moved by a driving unit with the fixed unit 100 as a reference. The moving unit may include an AF moving unit 400. The moving unit can move during AF driving. The moving unit may include an OIS moving unit. The moving unit can move during OIS driving. A lens may be coupled to the moving unit.

[0063] The lens driving device 10 may include an OIS moving unit. The moving unit may include an OIS moving unit. The OIS moving unit may be arranged on the fixed unit 100. The OIS moving unit may be arranged inside the fixed unit 100. The OIS moving unit may be arranged on the fixed unit 100. The OIS moving unit may be arranged between the fixed unit 100 and the AF moving unit 400. The OIS moving unit may be arranged to be movably arranged. The OIS moving unit can be moved in a direction perpendicular to the optical axis relative to the fixed unit 100 by the OIS driving unit. The OIS moving unit can move when the OIS is driven.

[0064] The lens driving device 10 may include an OIS-x moving unit 200. The OIS moving unit may include the OIS-x moving unit 200. The OIS-x moving unit 200 may be disposed on the fixed unit 100. The OIS-x moving unit 200 may be disposed within the fixed unit 100. The OIS-x moving unit 200 may be disposed on the fixed unit 100. The OIS-x moving unit 200 may be disposed between the fixed unit 100 and the AF moving unit 400. The OIS-x moving unit 200 may be disposed between the fixed unit 100 and the OIS-y moving unit 300. The OIS-x moving unit 200 may be disposed movably. The OIS-x moving unit 200 can be moved in the x-axis direction perpendicular to the optical axis relative to the fixed unit 100 by the OIS-x driving unit 500. The OIS-x moving unit 200 can move when the OIS is driven.

[0065] The lens driving device 10 may include an OIS-x carrier 210. The OIS-x movement unit 200 may include an OIS-x carrier 210. The OIS-x carrier 210 may be an "OIS-x holder." The OIS-x carrier 210 may be a "housing." The OIS-x carrier 210 may be disposed outside the AF carrier 410. The OIS-x carrier 210 may be disposed within the base 110. The OIS-x carrier 210 may be disposed on the base 110. The OIS-x carrier 210 may be disposed within the cover 140. The OIS-x carrier 210 may be disposed between the base 110 and the OIS-y carrier 310. The OIS-x carrier 210 may be disposed between the AF carrier 410 and the base 110. The OIS-x carrier 210 may be disposed between the AF carrier 410 and the cover 120. The OIS-x carrier 210 may be arranged to be movable in the x-axis direction perpendicular to the optical axis.

[0066] The first mover 200 may include a first portion disposed outside the fixed portion 100. At least a portion of the first mover 200 may be disposed outside the fixed portion 100. An AF guide ball 830 may be disposed between the first portion of the first mover 200 and the fixed portion 100. The OIS-x carrier 210 may include a first portion disposed outside the base 110. At least a portion of the OIS-x carrier 210 may be disposed outside a pillar portion of the base 110. The OIS-x carrier 210 may include a first portion disposed outside the pillar portion of the base 110. The pillar portion of the base 110 may extend upward from the lower plate 111 of the base 110.

[0067] The OIS-x carrier 210 may include a groove 211. The groove 211 may be an "OIS-x guide ball receiving groove." The groove 211 may be formed in a side plate of the OIS-x carrier 210. The groove 211 may be formed on the inner surface of the side plate of the OIS-x carrier 210. The OIS-x guide ball 810 may be arranged in the groove 211. The groove 211 may be in direct contact with the OIS-x guide ball 810. The groove 211 may be arranged in a direction perpendicular to the optical axis. The groove 211 may be arranged in the x-axis direction. The groove 211 can guide the OIS-x guide ball 810 to move in the x-axis direction. The groove 211 may include multiple grooves. The groove 211 may include four grooves. The groove 211 may include a first groove that contacts the OIS-x guide ball 810 at two points and a second groove that contacts the OIS-x guide ball 810 at one point. Alternatively, the first groove and the second groove may both contact the OIS-x guide ball 810 at two points.

[0068] The OIS-x carrier 210 may include a groove 212. The groove 212 may be an "OIS-y guide ball receiving groove." The groove 212 may be formed in a side plate of the OIS-x carrier 210. The groove 212 may be formed on the inner surface of the side plate of the OIS-x carrier 210. The OIS-y guide ball 820 may be arranged in the groove 212. The groove 212 may be in direct contact with the OIS-y guide ball 820. The groove 212 may be arranged in a direction perpendicular to the optical axis. The groove 212 may be arranged in the y-axis direction. The groove 212 can guide the OIS-y guide ball 820 to move in the y-axis direction. The groove 212 may include multiple grooves. The groove 212 may include four grooves. The groove 212 may include a first groove that contacts the OIS-y guide ball 820 at two points and a second groove that contacts the OIS-y guide ball 820 at one point. Alternatively, the first groove and the second groove may both contact the OIS-y guide ball 820 at two points.

[0069] The OIS-x carrier 210 may include a first side plate on which the OIS-x guide balls 810 are disposed and a second side plate on which the OIS-y guide balls 820 are disposed.

[0070] OIS-x carrier 210 may include metal plate 213. Metal plate 213 may be a "reinforcing member." Metal plate 213 may be provided to reinforce the strength of OIS-x carrier 210. Metal plate 213 may be disposed on the upper surface of OIS-x carrier 210. Metal plate 213 may be disposed in OIS-x carrier 210 by insert injection.

[0071] OIS-x carrier 210 may include groove 214. Groove 214 may be a "metal plate receiving groove." Metal plate 213 may be placed in groove 214. Groove 214 may be formed in a concave shape on the top surface of OIS-x carrier 210. Groove 214 may include a shape corresponding to metal plate 213.

[0072] OIS-x carrier 210 may include groove 215. Groove 215 may be a "coil-receiving groove." Groove 215 may be formed in a side plate of OIS-x carrier 210. A coil may be disposed in groove 215. OIS-x coil 520 may be disposed in groove 215. OIS-y coil 620 may be disposed in groove 215.

[0073] OIS-x carrier 210 may include holes 216. Holes 216 may be "sensor receiving holes." Holes 216 may be formed in the top plate of OIS-x carrier 210. A sensor may be disposed in holes 216. OIS-x sensor 530 may be disposed in holes 216. OIS-y sensor 630 may be disposed in holes 216.

[0074] Hereinafter, "groove 211," "groove 212," "groove 214," and "groove 215" of OIS-x carrier 210 may be referred to as "first groove," "second groove," "third groove," and "fourth groove," respectively.

[0075] The lens driving device 10 may include an OIS-y moving unit 300. The OIS moving unit may include the OIS-y moving unit 300. The OIS-y moving unit 300 may be arranged on the fixed unit 100. The OIS-y moving unit 300 may be arranged inside the fixed unit 100. The OIS-y moving unit 300 may be arranged on the fixed unit 100. The OIS-y moving unit 300 may be arranged outside the AF moving unit 400. The OIS-y moving unit 300 may be arranged between the AF moving unit 400 and the OIS-x moving unit 200. The OIS-y moving unit 300 may be arranged inside the OIS-x moving unit 200. The OIS-y moving unit 300 may be arranged movably. The OIS-y moving unit 300 can be moved by the OIS-y driving unit 600 in the y-axis direction, which is perpendicular to both the optical axis and the x-axis, relative to the fixed unit 100 and the OIS-x moving unit 200. The OIS-y moving section 300 can move when the OIS is driven.

[0076] The lens driving device 10 may include an OIS-y carrier 310. The OIS-y movement unit 300 may include an OIS-y carrier 310. The OIS-y carrier 310 may be an "OIS-y holder." The OIS-y carrier 310 may be a "housing." The OIS-y carrier 310 may be disposed inside the OIS-x carrier 210. The OIS-y carrier 310 may be disposed outside the AF carrier 410. The OIS-y carrier 310 may be disposed between the AF carrier 410 and the OIS-x carrier 210. The OIS-y carrier 310 may be disposed inside the base 110. The OIS-y carrier 310 may be disposed on the base 110. The OIS-y carrier 310 may be disposed inside the cover 140. The OIS-y carrier 310 may be disposed so as to be movable in the y-axis direction, which is perpendicular to both the optical axis and the x-axis.

[0077] The OIS-y carrier 310 may include a groove 311. The groove 311 may be an "OIS-y guide ball receiving groove." The groove 311 may be formed in a side plate of the OIS-y carrier 310. The groove 311 may be formed on the outer surface of the side plate of the OIS-y carrier 310. The OIS-y guide ball 820 may be arranged in the groove 311. The groove 311 may be in direct contact with the OIS-y guide ball 820. The groove 311 may be arranged in a direction perpendicular to the optical axis. The groove 311 may be arranged in the y-axis direction. The groove 311 can guide the OIS-y guide ball 820 to move in the y-axis direction. The groove 311 may include multiple grooves. The groove 311 may include four grooves. The groove 311 may include a first groove that contacts the OIS-y guide ball 820 at two points and a second groove that contacts the OIS-y guide ball 820 at one point. Alternatively, the first groove and the second groove may both contact the OIS-y guide ball 820 at two points.

[0078] The OIS-y carrier 310 may include a groove 312. The groove 312 may be an "AF guide ball receiving groove." The groove 312 may be formed in a side plate of the OIS-y carrier 310. The groove 311 may be formed on the inner surface of the side plate of the OIS-y carrier 310. The AF guide ball 830 may be arranged in the groove 312. The groove 312 may be in direct contact with the AF guide ball 830. The groove 312 may be arranged in the optical axis direction. The groove 312 can guide the AF guide ball 830 to move in the optical axis direction. The groove 312 may include multiple grooves. The groove 312 may include two grooves. The two grooves may be arranged parallel to each other. The groove 312 may include a first groove that contacts the AF guide ball 830 at two points and a second groove that contacts the AF guide ball 830 at one point. As a modified example, the first groove and the second groove may both contact the AF guide ball 830 at two points.

[0079] The OIS-y carrier 310 may include a metal plate 313. The metal plate 313 may be a "reinforcing member." The metal plate 313 may be provided to reinforce the strength of the OIS-y carrier 310. The metal plate 313 may be disposed on the upper surface of the OIS-y carrier 310. The metal plate 313 may be disposed in the OIS-y carrier 310 by insert injection.

[0080] The OIS-y carrier 310 may include a groove 314. The groove 314 may be a "metal plate receiving groove." The metal plate 313 may be disposed in the groove 314. The groove 314 may be formed in a concave shape on the upper surface of the OIS-y carrier 310. The groove 314 may include a shape corresponding to the metal plate 313.

[0081] Hereinafter, the "groove 311," "groove 312," and "groove 314" of the OIS-y carrier 310 may be referred to as the "first groove," "second groove," and "third groove," respectively.

[0082] The lens driving device 10 may include an AF moving unit 400. The moving unit may include the AF moving unit 400. The AF moving unit 400 may be arranged in the fixed unit 100. The AF moving unit 400 may be arranged inside the fixed unit 100. The AF moving unit 400 may be arranged on the fixed unit 100. The AF moving unit 400 may be arranged inside the OIS moving unit. The AF moving unit 400 may be arranged inside the OIS-x moving unit 200. The AF moving unit 400 may be arranged inside the OIS-y moving unit 300. The AF moving unit 400 may be arranged to be movably disposed. The AF moving unit 400 can be moved in the optical axis direction relative to the fixed unit 100 by the AF driving unit 700. The AF moving unit 400 can be moved in the optical axis direction relative to the OIS moving unit by the AF driving unit 700. The AF moving unit 400 can move during AF driving.

[0083] The AF lens driving device 10 may include an AF carrier 410. The AF movement unit 400 may include an AF carrier 410. The AF carrier 410 may be an "AF holder." The AF carrier 410 may be a "bobbin." The AF carrier 410 may be disposed within the base 110. The AF carrier 410 may be disposed on the base 110. The AF carrier 410 may be disposed within the cover 120. The AF carrier 410 may be disposed within the OIS-x carrier 210. The AF carrier 410 may be disposed within the OIS-y carrier 310. The AF carrier 410 may be disposed movably. The AF carrier 410 may be disposed movably in the optical axis direction.

[0084] The AF carrier 410 may include a groove 411. The groove 411 may be an "AF guide ball receiving groove." The groove 411 may be formed on a side surface of the AF carrier 410. The groove 411 may be formed on the outer surface of the AF carrier 410. The AF guide ball 830 may be disposed in the groove 411. The groove 411 may be in direct contact with the AF guide ball 830. The groove 411 may be disposed in the optical axis direction. The groove 411 can guide the AF guide ball 830 to move in the optical axis direction. The groove 411 may include a plurality of grooves. The groove 411 may include two grooves. The two grooves may be disposed parallel to each other. The groove 411 may include a first groove that contacts the AF guide ball 830 at two points and a second groove that contacts the AF guide ball 830 at one point. As a variation, both the first groove and the second groove may contact the AF guide ball 830 at two points.

[0085] The AF carrier 410 may include a groove. The AF magnet 710 may be disposed in the groove. When viewed from the outside, the AF magnet 710 may be disposed between the two grooves 411.

[0086] The lens driving device 10 may include a ball cover 412. The ball cover 412 may be disposed on the AF guide ball 830. The ball cover 412 can overlap the AF guide ball 830 in the optical axis direction. The ball cover 412 can prevent the AF guide ball 830 from coming off. The ball cover 412 may be disposed on the upper surface of the AF carrier 410. The ball cover 412 may be disposed at a position corresponding to the groove 411 of the AF carrier 410. The ball cover 412 may be formed of a metal plate. The ball cover 412 may be formed in a shape that does not interfere with the OIS-y carrier 310.

[0087] The lens driving device 10 may include a driving unit. The driving unit can move the moving unit relative to the fixed unit 100. The driving unit may include an AF driving unit 700. 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.

[0088] The lens driving device 10 may include an OIS driving unit. The OIS driving unit can move the OIS moving unit in a direction perpendicular to the optical axis direction. The OIS driving unit can move the OIS-x carrier 210 and the OIS-y carrier 310 in a direction perpendicular to the optical axis. The OIS driving unit can move the OIS-x carrier 210 and the OIS-y carrier 310 in a direction perpendicular to the optical axis via electromagnetic force. The OIS driving unit may include a magnet and a coil.

[0089] 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 can move the OIS-x moving unit 200 in the x-axis direction perpendicular to the optical axis direction. The OIS-x driving unit 500 can move the OIS-x carrier 210 in the x-axis direction. The OIS-x driving unit 500 can move the OIS-x carrier 210 and the OIS-y carrier 310 in the x-axis direction perpendicular to the optical axis. The OIS-x driving unit 500 can move the OIS-x carrier 210 and the OIS-y 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.

[0090] In this embodiment, the OIS-x magnet 510 and the OIS-x coil 520 can move the OIS moving unit in the x-axis direction, which is perpendicular to the optical axis direction. The interaction between the OIS-x coil 520 and the OIS-x magnet 510 can move the OIS-x carrier 210 and the OIS-y carrier 310 in the x-axis direction, which is perpendicular to the optical axis direction. The OIS-x magnet 510, the OIS-x carrier 210, and the OIS-y carrier 310 can move together in the x-axis direction.

[0091] 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 on the fixed unit 100. The OIS-x magnet 510 may be disposed on the base 110. The OIS-x magnet 510 may be fixed to the base 110. The OIS-x magnet 510 may be coupled to the base 110. The OIS-x magnet 510 may be adhered to the base 110 with an adhesive. The OIS-x magnet 510 may be disposed on the protrusion 112 of the base 110. The OIS-x magnet 510 may be spaced apart from the AF magnet 710. The OIS-x magnet 510 may be disposed within the cover 120.

[0092] 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 y-axis direction. The OIS-x magnet 510 can move the OIS-x coil 520 in the x-axis direction.

[0093] The OIS-x magnet 510 may be a four-pole magnet. The OIS-x magnet 510 may include a four-pole magnetized magnet. The OIS-x magnet 510 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be spaced apart in a horizontal direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0094] 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 in the x-axis direction perpendicular to the optical axis. The OIS-x coil 520 may move in the x-axis direction through interaction with the OIS-x magnet 510. The OIS-x coil 520 may face the OIS-x magnet 510. The OIS-x coil 520 may face the OIS-x magnet 510. The OIS-x coil 520 may be disposed at a position corresponding to the OIS-x magnet 510. The OIS-x coil 520 may overlap the OIS-x magnet 510 in the direction perpendicular to the optical axis. The OIS-x coil 520 may overlap the OIS-x magnet 510 in the y-axis direction. The OIS-x coil 520 may be disposed on the outer substrate 910. OIS-x coil 520 may be disposed on OIS-x moving section 200. OIS-x coil 520 may be disposed on OIS-x carrier 210. OIS-x coil 520 may be disposed on OIS-x carrier 210 via inner substrate 720. OIS-x coil 520 can move integrally with OIS-x carrier 210.

[0095] In this embodiment, the OIS-x coil 520 can move together with the OIS-x moving unit 200. In this case, the weight of the moving unit is lighter than in the comparative example in which the OIS-x magnet 510 is disposed in the OIS-x moving unit 200 and moves together with it, and the current consumed for driving the OIS-x can be reduced.

[0096] 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 outer substrate 910. The OIS-x sensor 530 may be disposed on the OIS-x carrier 210. The OIS-x sensor 530 may be disposed on the OIS-x moving unit 200. The OIS-x sensor 530 may include a Hall sensor. The OIS-x sensor 530 can sense the OIS-x magnet 510. The OIS-x sensor 530 can sense the magnetic force of the OIS-x magnet 510. The OIS-x sensor 530 may be disposed above the OIS-magnet 520. The OIS-x sensor 530 may overlap the OIS-magnet 520 in the optical axis direction. As a variant, the OIS-x sensor 530 may be disposed inside the OIS-x coil 520. In this case, the OIS-x sensor 530 may overlap the OIS-x coil 520 in the optical axis direction. 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.

[0097] 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-x carrier 210. The OIS-x yoke 540 can prevent magnetic flux leakage from the OIS-x magnet 510 and improve the force of interaction with the OIS-x coil 520.

[0098] 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 can move the OIS-y moving unit 300 in the y-axis direction, which is perpendicular to both the optical axis direction and the x-axis direction. The OIS-y driving unit 600 can move the OIS-y 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 can move the OIS-y 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.

[0099] In this embodiment, the OIS-y magnet 610 and the OIS-y coil 620 can move the OIS moving unit in the y-axis direction, which is perpendicular to the optical axis direction and the x-axis direction. The interaction between the OIS-y coil 620 and the OIS-y magnet 610 can move the OIS-y carrier 310 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-y carrier 310 can move together in the y-axis direction. At this time, the AF carrier 410 can also move together with the OIS-y carrier 310 in the y-axis direction.

[0100] The lens driving device 10 may include an OIS-y magnet 610. The OIS-y driving unit 600 may include an OIS-y magnet 610. The OIS-y magnet 610 may be an "OIS-y magnet." The OIS-y magnet 610 may be a permanent magnet. The OIS-y magnet 520 may be arranged in the OIS moving unit. The OIS-y magnet 610 may be separated from the OIS-x magnet 510. The OIS-y magnet 610 may be separated from the AF magnet 710. The OIS-y magnet 610 may be arranged in the OIS-y moving unit 300. The OIS-y magnet 610 may be arranged in the OIS-y carrier 310. The OIS-y magnet 610 may be arranged on a lower plate of the OIS-y carrier 310. The OIS-y magnet 610 may be arranged on the lower plate of the OIS-y carrier 310. The OIS-y magnet 610 may be disposed on the upper surface of the lower plate of the OIS-y carrier 310. The OIS-y magnet 610 may be fixed to the OIS-y carrier 310. The OIS-y magnet 610 may be coupled to the OIS-y carrier 310. The OIS-y magnet 610 may be adhered to the OIS-y carrier 310 with an adhesive. The OIS-y magnet 610 may be disposed within the cover 120.

[0101] The OIS-y magnet 610 can interact with the OIS-y coil 620. The OIS-y magnet 610 can 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 can face the OIS-y coil 620. The OIS-y magnet 610 can 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 x-axis direction. The OIS-y magnet 610 can move in the y-axis direction.

[0102] The OIS-y magnet 610 may be a four-pole magnet. The OIS-y magnet 610 may include a four-pole magnetized magnet. The OIS-y magnet 610 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in the horizontal direction. The first magnet portion and the second magnet portion may be spaced apart in the horizontal direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0103] The lens driving device 10 may include an OIS-y coil 620. The OIS-y driving unit 600 may include an OIS-y coil 620. The OIS-y coil 620 can interact with the OIS-y magnet 610. The OIS-y coil 620 may be disposed on the opposite side of the AF coil 720 with respect to the optical axis. The OIS-y coil 620 can 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 can 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 can face the OIS-y magnet 610. The OIS-y coil 620 can 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 overlap the OIS-y magnet 610 in the x-axis direction. The OIS-y coil 620 may be disposed on the outer substrate 910. The OIS-y coil 620 may be disposed on the OIS-x carrier 210. The OIS-y coil 620 may be disposed on the OIS-x carrier 210 via the outer substrate 910. The OIS-y coil 620 may be disposed on the OIS-x moving unit 200. The OIS-y coil 620 can move integrally with the OIS-x moving unit 200.

[0104] In this embodiment, the OIS-y coil 620 can move together with the OIS-x moving unit 200. The OIS-y coil 620 can move in the x-axis direction together with the OIS-x moving unit 200. During the OIS-x driving process, the OIS-y coil 620 can move in the x-axis direction together with the OIS-x moving unit 200. The OIS-y coil 620 may be disposed on the OIS-x moving unit 200. The OIS-y coil 620 may be fixed to the OIS-x moving unit 200. The OIS-y coil 620 may be coupled to the OIS-x moving unit 200.

[0105] The lens driving device 10 may include an OIS-y sensor 630. The OIS-y driving unit 600 may include the OIS-y sensor 630. The OIS-y sensor 630 may be disposed on the outer substrate 910. The OIS-y sensor 630 may be disposed on the OIS-x carrier 210. The OIS-y sensor 630 may be disposed on the OIS-x moving unit 200. The OIS-y sensor 630 may include a Hall sensor. The OIS-y sensor 630 can sense the OIS-y magnet 610. The OIS-y sensor 630 can sense the magnetic force of the OIS-y magnet 610. The OIS-y sensor 630 may be disposed above the OIS-y magnet 620. The OIS-y sensor 630 may overlap the OIS-y magnet 620 in the optical axis direction. As a variant, the OIS-y sensor 630 may be disposed inside the OIS-y coil 620. At this time, the OIS-y sensor 630 may overlap with the OIS-y coil 620 in the optical axis direction. The OIS-y sensor 630 can 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 image stabilization driving in the y-axis direction.

[0106] 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-y carrier 310. The OIS-y yoke 640 can prevent leakage of magnetic flux from the OIS-y magnet 610 and improve the force of interaction with the OIS-y coil 620.

[0107] The lens driving device 10 may include an AF driving unit 700. The AF driving unit 700 can move the AF movement unit 400 in the optical axis direction. The AF driving unit 700 can move the AF carrier 410 in the optical axis direction. The AF driving unit 700 can move the AF carrier 410 in the optical axis direction via electromagnetic force. The AF driving unit 700 may include a coil and a magnet.

[0108] In this embodiment, the AF carrier 410 can move in the optical axis direction due to the interaction between the AF coil 720 and the AF magnet 710. The AF magnet 710 and the AF carrier 410 can move together in the optical axis direction.

[0109] The lens driving device 10 may include an AF magnet 710. The AF driving unit 700 may include an AF magnet 710. The AF magnet 710 may be an "AF magnet." The AF magnet 710 may be a permanent magnet. The AF magnet 710 may be disposed in the AF movement unit 400. The AF magnet 710 may be disposed in the AF carrier 410. The AF magnet 710 may be disposed on the outer surface of the AF carrier 410. The AF magnet 710 may be fixed to the AF carrier 410. The AF magnet 710 may be coupled to the AF carrier 410. The AF magnet 710 may be adhered to the AF carrier 410 with an adhesive. The AF magnet 710 may be disposed within the cover 120.

[0110] The AF magnet 710 can interact with the AF coil 720. The AF magnet 710 can electromagnetically interact with the AF coil 720. The AF magnet 710 may be disposed at a position corresponding to the AF coil 720. The AF magnet 710 can face the AF coil 720. The AF magnet 710 can face the AF coil 720. The AF magnet 710 may overlap with the AF coil 720 in a direction perpendicular to the optical axis. The AF magnet 710 may overlap with the AF coil 720 in the y-axis direction.

[0111] In this embodiment, the outer surface of the AF magnet 710 may be arranged parallel to the second side plate of the cover 120. The AF magnet 710 may be arranged parallel to the second side plate of the cover 120.

[0112] The AF magnet 710 may be a four-pole magnet. The AF magnet 710 may include a four-pole magnetized magnet. The AF magnet 710 may include a first magnet portion including an N pole and an S pole, and a second magnet portion including an N pole and an S pole. The first magnet portion and the second magnet portion may be arranged in a vertical direction. The first magnet portion and the second magnet portion may be spaced apart in the vertical direction. The first magnet portion and the second magnet portion may be spaced apart in the optical axis direction. A neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0113] The lens driving device 10 may include an AF coil 720. The AF driving unit 700 may include an AF coil 720. The AF coil 720 can interact with the AF magnet 710. The AF coil 720 can face the AF magnet 710. The AF coil 720 can face the AF magnet 710. The AF coil 720 may be arranged at a position corresponding to the AF magnet 710. The AF coil 720 may overlap the AF magnet 710 in a direction perpendicular to the optical axis. The AF coil 720 may be arranged on the inner substrate 920. The AF coil 720 may be arranged on the OIS-y carrier 310. The AF coil 720 may be arranged on the OIS-y carrier 310 via the inner substrate 920. The AF coil 720 can move integrally with the OIS-y carrier 310. The AF coil 720 may be arranged on the OIS-y moving unit 300. The AF coil 720 can move integrally with the OIS-y moving unit 300.

[0114] The lens driving device 10 may include an AF sensor 730. The AF driving unit 700 may include the AF sensor 730. The AF sensor 730 may be a hole sensor. The AF sensor 730 may be disposed on the inner substrate 720. The AF sensor 730 can sense the AF magnet 710. The AF sensor 730 can sense movement of the AF magnet 710. The movement amount or position of the AF magnet 710 sensed by the AF sensor 730 can be used as feedback for autofocus driving. The AF sensor 730 may be disposed on the OIS-y movement unit 300. The AF sensor 730 may be disposed on the OIS-y carrier 310. The AF sensor 730 may be disposed on the OIS-y carrier 310 via the inner substrate 720. The AF sensor 730 can move together with the OIS-y movement unit 300.

[0115] The AF sensor 730 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 720. The driver IC may supply current to the AF coil 720.

[0116] The AF sensor 730 may be disposed within the AF coil 720. The AF sensor 730 may overlap the neutral portion of the AF magnet 710 in a direction perpendicular to the optical axis. As a modification, the AF sensor 730 may be disposed outside the AF coil 720.

[0117] Lens driving device 10 may include an AF yoke 740. The AF yoke 740 may be disposed at a position corresponding to the AF magnet 710. The AF yoke 740 may be disposed on the AF magnet 710. The AF yoke 740 may be disposed between the AF magnet 710 and the AF carrier 410. The AF yoke 740 may be disposed on the inner surface of the AF magnet 710. The AF yoke 740 may be disposed on the outer surface of the AF carrier 410. In this way, the AF yoke 740 can minimize leakage of magnetic flux from the AF magnet 710 and increase the electromagnetic interaction force between the AF magnet 710 and the AF coil 720.

[0118] When viewed from above, the OIS-x coil 520, OIS-x magnet 510, AF magnet 710, and AF coil 720 may be arranged in this order on an imaginary line. When viewed from above, the OIS-x coil 520, OIS-x magnet 510, AF magnet 710, and AF coil 720 may be arranged in this order. When viewed from above, the OIS-x coil 520, OIS-x magnet 510, AF magnet 710, and AF coil 720 may be arranged in this order in the y-axis direction. When viewed from above, the OIS-x coil 520, OIS-x magnet 510, AF magnet 710, and AF coil 720 may overlap in the y-axis direction.

[0119] In this embodiment, the cover 120 may include first and second side plates disposed on opposite sides, and third and fourth side plates disposed on opposite sides. An OIS-x driving unit 500 may be disposed at a position corresponding to the first side plate of the cover 120, an AF driving unit 700 may be disposed at a position corresponding to the third side plate of the cover 120, and an OIS-y driving unit 600 may be disposed at a position corresponding to the second side plate of the cover 120.

[0120] 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.

[0121] The lens driving device 10 may include an OIS-x guide ball 810. The OIS-x guide ball 810 can guide the movement of the OIS-x movement unit 200 relative to the fixed unit 100 in the x-axis direction. The OIS-x guide ball 810 can guide the movement of the OIS-x carrier 210 relative to the base 110 in the x-axis direction. The OIS-x guide ball 810 may be disposed between the fixed unit 100 and the OIS-x movement unit 200. The OIS-x guide ball 810 may be disposed between the fixed unit 100 and the OIS-x movement unit 200 in the y-axis direction. The OIS-x guide ball 810 may be disposed between the base 110 and the OIS-x carrier 210. The OIS-x guide ball 810 may be disposed between the base 110 and the OIS-x carrier 210 in the y-axis direction. The entire area of ​​the OIS-x guide ball 810 from its lower end to its upper end may overlap with both the base 110 and the OIS-x carrier 210 in the y-axis direction. The entire area of ​​the OIS-x guide ball 810 may overlap with both the base 110 and the OIS-x carrier 210 in the y-axis direction. The OIS-x guide ball 810 may be disposed between the outer surface of the base 110 and the inner surface of the OIS-x carrier 210. When viewed from the inside of the OIS-x carrier 210, the OIS-x guide ball 810 may overlap with the OIS-x magnet 510 in the horizontal direction.

[0122] The OIS-x guide ball 810 may be disposed in the groove 112 of the base 110. The OIS-x guide ball 810 may be disposed in the groove 211 of the OIS-x carrier 210. The OIS-x guide ball 810 may include a first ball that contacts the base 110 and the OIS-x carrier 210 at four points and a second ball that contacts the base 110 and the OIS-x carrier 210 at three points. The OIS-x guide ball 810 may be spherical. The OIS-x guide ball 810 may be made of metal. Grease may be applied to the surface of the OIS-x guide ball 810.

[0123] The OIS-x guide balls 810 may include multiple balls. The OIS-x guide balls 810 may include four balls. Two OIS-x guide balls 810 may be arranged on one side of the OIS-x magnet 510, and the remaining two OIS-x guide balls 810 may be arranged on the other side of the OIS-x magnet 510.

[0124] The lens driving device 10 may include an OIS-y guide ball 820. The OIS-y guide ball 820 can guide the movement of the OIS-y carrier 310 relative to the OIS-x carrier 210 in the y-axis direction. The OIS-y guide ball 820 may be arranged between the OIS-x movement unit 200 and the OIS-y movement unit 300. The OIS-y guide ball 820 may be arranged between the OIS-x movement unit 200 and the OIS-y movement unit 300 in the x-axis direction. The OIS-y guide ball 820 may be arranged between the OIS-x carrier 210 and the OIS-y carrier 310. The OIS-y guide ball 820 may be arranged between the OIS-x carrier 210 and the OIS-y carrier 310 in the x-axis direction. The entire area from the bottom to the top of the OIS-y guide ball 820 may overlap with both the OIS-x carrier 210 and the OIS-y carrier 310 in the x-axis direction. The OIS-y guide ball 820 may be disposed between the inner surface of the OIS-x carrier 210 and the outer surface of the OIS-y carrier 310. When viewed from the outside of the OIS-y carrier 310, the OIS-y guide ball 820 may overlap the OIS-y magnet 610 in the horizontal direction. Here, the horizontal direction may be any direction perpendicular to the optical axis.

[0125] A portion of the OIS-y guide ball 820 can overlap with the OIS-x carrier 210 in the y-axis direction. Another portion of the OIS-y guide ball 820 can overlap with the OIS-y carrier 310 in the y-axis direction.

[0126] The OIS-y guide ball 820 may be disposed in the groove 212 of the OIS-x carrier 210. The OIS-y guide ball 820 may be disposed in the groove 311 of the OIS-y carrier 310. The OIS-y guide ball 820 may include a first ball that contacts the OIS-x carrier 210 and the OIS-y carrier 310 at four points, and a second ball that contacts the OIS-x carrier 210 and the OIS-y carrier 310 at three points. The OIS-y guide ball 820 may be spherical. The OIS-y guide ball 820 may be made of metal. Grease may be applied to the surface of the OIS-y guide ball 820.

[0127] The OIS-y guide balls 820 may include multiple balls. The OIS-y guide balls 820 may include four balls. Two OIS-y guide balls 820 may be arranged on one side of the OIS-y magnet 610, and the remaining two OIS-y guide balls 820 may be arranged on the other side of the OIS-y magnet 610.

[0128] The lens driving device 10 may include an AF guide ball 830. The AF guide ball 830 can guide the movement of the AF carrier 410 relative to the OIS-y carrier 310 in the optical axis direction. The AF guide ball 830 may be arranged between the OIS-y movement unit 300 and the AF movement unit 400. The AF guide ball 830 may be arranged between the OIS-y movement unit 300 and the AF movement unit 400 in the y-axis direction. The AF guide ball 830 may be arranged between the OIS-y carrier 310 and the AF carrier 410. The AF guide ball 830 may be arranged between the OIS-y carrier 310 and the AF carrier 410 in the y direction. The AF guide ball 830 may be arranged in the groove 312 of the OIS-y carrier 310. The AF guide ball 830 may be arranged in the groove 411 of the AF carrier 410. The AF guide ball 830 may be spherical. The AF guide ball 830 may be made of metal. The surface of the AF guide ball 830 may be coated with grease.

[0129] The AF guide balls 830 may include multiple balls. The AF guide balls 830 may include four balls. Two AF guide balls 830 may be arranged on one side of the AF magnet 710, and the remaining two AF guide balls 830 may be arranged on the other side of the AF magnet 710.

[0130] The lens driving device 10 may include a guide ball pressing member. The guide ball pressing member can pressurize the guide balls 810, 820, and 830. The guide ball pressing member can maintain the guide balls 810, 820, and 830 in contact with two other members.

[0131] The lens driving device 10 may include an OIS-x ball pressure yoke 860. The OIS-x ball pressure yoke 860 can apply pressure to the OIS-x guide ball 810. The OIS-x ball pressure yoke 860 can maintain the OIS-x guide ball 810 in contact with the fixed unit 100 and the OIS-x moving unit 200. The OIS-x ball pressure yoke 860 can maintain the OIS-x guide ball 820 in contact with the base 110 and the OIS-x carrier 210. The OIS-x ball pressure yoke 860 may be arranged so that an attractive force acts between the OIS-x magnet 510 and the OIS-x magnet 510. The OIS-x ball pressure yoke 860 may be arranged on the outer surface of the outer substrate 910. The OIS-x ball pressure yoke 860 may be arranged on the OIS-x moving unit 200.

[0132] The lens driving device 10 may include an OIS-y ball pressure yoke 870. The OIS-y ball pressure yoke 870 can apply pressure to the OIS-y guide ball 820. The OIS-y ball pressure yoke 870 can maintain the OIS-y guide ball 820 in contact with the OIS-x movement unit 200 and the OIS-y movement unit 300. The OIS-y ball pressure yoke 870 can maintain the OIS-x guide ball 820 in contact with the OIS-x carrier 210 and the OIS-y carrier 310. The OIS-y ball pressure yoke 870 may be arranged so as to exert an attractive force on the OIS-y magnet 610. The OIS-y ball pressure yoke 870 may be arranged on the outer surface of the outer substrate 910. The OIS-y ball pressure yoke 870 may be arranged on the OIS-x movement unit 200.

[0133] The lens driving device 10 may include an AF ball pressure yoke 880. The AF ball pressure yoke 880 can apply pressure to the AF guide ball 830. The AF ball pressure yoke 880 can maintain the AF guide ball 830 in contact with the OIS-y movement unit 300 and the AF movement unit 400. The AF ball pressure yoke 880 can maintain the AF guide ball 830 in contact with the OIS-y carrier 310 and the AF carrier 410. The AF ball pressure yoke 880 may be arranged so that an attractive force acts between the AF ball and the AF magnet 710. The AF ball pressure yoke 880 may be arranged on the outer surface of the inner substrate 920. The AF ball pressure yoke 880 may be arranged on the OIS-y movement unit 300.

[0134] The lens driving device 10 may include substrates 910 and 920. The substrates 910 and 920 may include flexible printed circuit boards (FPCBs). The substrates 910 and 920 may be electrically connected to the coils 520, 620, and 720. The substrates 910 and 920 may be electrically connected to the sensors 530, 630, and 730.

[0135] The lens driving device 10 may include an outer substrate 910. The outer substrate 910 may be disposed on the base 110 and the OIS-x carrier 210. The outer substrate 910 may connect the base 110 and the OIS-x carrier 210. The outer substrate 910 may elastically connect the base 110 and the OIS-x carrier 210. The outer substrate 910 may support the OIS-x carrier 210 so that it can move relative to the base 110. The outer substrate 910 may be electrically connected to the OIS-x coil 520. The outer substrate 910 may be electrically connected to the OIS-y coil 620. The outer substrate 910 may be electrically connected to the OIS-x sensor 530. The outer substrate 910 may be electrically connected to the OIS-y sensor 630. The outer substrate 910 may include a flexible substrate. The outer substrate 910 may include a flexible printed circuit board (FPCB). The outer substrate 910 may include an elastic portion. The outer substrate 910 may include an elastic member.

[0136] The outer substrate 910 may include an outer portion 911. The outer portion 911 may be disposed on the fixed portion 100. The outer portion 911 may be disposed on the base 110. The outer portion 911 may be disposed on a side surface of the base 110. The outer portion 911 may be disposed on the lower plate 111 of the base 110. The outer portion 911 may be disposed on two side surfaces of the base 110. The outer portion 911 may include two terminal portions. The two terminal portions may be disposed on opposite sides of the optical axis. The terminal portion may include a terminal 862-1.

[0137] The outer substrate 910 may include a terminal 911a. An outer portion 911 of the outer substrate 910 may include a terminal 911a. The terminal 911a may be disposed at a lower end of the base 110. The terminal 911a may be coupled to the printed circuit board 50. The terminal 911a may be coupled to a terminal of the printed circuit board 50 via solder. The terminal 911a may be coupled to a terminal of the printed circuit board 50 via a conductive member. The terminal 911a may be connected to a terminal of the printed circuit board 50. The terminal 911a may be electrically connected to a terminal of the printed circuit board 50.

[0138] The outer substrate 910 may include an inner portion 912. The inner portion 912 may be disposed in the OIS-x moving portion 200. The inner portion 912 may be disposed in the OIS-x carrier 210. A coil may be disposed in the inner portion 912. The OIS-x coil 520 may be disposed in the inner portion 912. The OIS-y coil 620 may be disposed in the inner portion 912. A sensor may be disposed in the inner portion 912. The OIS-x sensor 530 may be disposed in the inner portion 912. The OIS-y sensor 630 may be disposed in the inner portion 912. The inner portion 912 may include a first region in which the OIS-x coil 520 is disposed, a second region in which the OIS-y coil 620 is disposed, a third region in which the OIS-x sensor 530 is disposed, and a fourth region in which the OIS-y sensor 630 is disposed.

[0139] The outer substrate 910 may include a connecting portion 913. The connecting portion 913 may be an "extension portion." The connecting portion 913 may be a "leg portion." The connecting portion 913 can connect the outer portion 911 and the inner portion 912. The connecting portion 913 may extend from the outer portion 911. At least a portion of the connecting portion 913 can move together with the OIS-x carrier 210. At least a portion of the connecting portion 913 may be arranged parallel to the optical axis direction. At least a portion of the connecting portion 913 of the outer substrate 910 may be formed to be movable in the x-axis direction. The connecting portion 913 may include a flexible substrate. The connecting portion 913 may have ductility. The connecting portion 913 may include a flexible printed circuit board (FPCB). The connecting portion 913 may include an elastic portion. The connecting portion 913 may include an elastic member.

[0140] The lens driving device 10 may include an inner substrate 920. The inner substrate 920 may be electrically connected to the AF coil 720. The inner substrate 920 may be electrically connected to the AF sensor 730. The inner substrate 920 may be disposed in the fixed unit 100. The inner substrate 920 may be disposed in the OIS-y movement unit 300. The inner substrate 920 may connect the base 110 and the OIS-y carrier 310. The inner substrate 920 may elastically connect the base 110 and the OIS-y carrier 310. The inner substrate 920 may support the OIS-y carrier 310 so that it can move relative to the base 110. The inner substrate 920 may include a flexible substrate. The inner substrate 920 may include a flexible printed circuit board (FPCB). The inner substrate 920 may include an elastic portion. The inner substrate 920 may include an elastic member.

[0141] The inner substrate 920 may include an outer portion 921. The outer portion 921 may be disposed on the fixing portion 100. The outer portion 921 may be disposed on the base 110. The outer portion 921 may be disposed on a side surface of the base 110. The outer portion 921 may be disposed on the lower plate 111 of the base 110.

[0142] The inner substrate 920 may include a terminal 921a. The outer portion 921 may include a terminal 921a. The outer portion 921 of the inner substrate 920 may include a terminal 921a. The terminal 921a may be disposed at a lower end of the base 110. The terminal 921a may be coupled to the printed circuit board 50. The terminal 921a may be coupled to a terminal of the printed circuit board 50 via solder. The terminal 921a may be coupled to a terminal of the printed circuit board 50 via a conductive member. The terminal 921a may be connected to a terminal of the printed circuit board 50. The terminal 921a may be electrically connected to a terminal of the printed circuit board 50.

[0143] The inner substrate 920 may include an inner portion 922. The inner portion 922 may be disposed in the OIS-y movement unit 300. The inner portion 922 may be disposed in the OIS-y carrier 310. A coil may be disposed in the inner portion 922. The AF coil 720 may be disposed in the inner portion 922. A sensor may be disposed in the inner portion 922. The AF sensor 730 may be disposed in the inner portion 922. The inner portion 922 may include a first region in which the AF coil 720 is disposed and a second region in which the AF sensor 730 is disposed.

[0144] The inner substrate 920 may include a connecting portion 923. The connecting portion 923 may be an "extension portion." The connecting portion 923 may be a "leg portion." The connecting portion 923 may connect the outer portion 921 and the inner portion 922. The connecting portion 923 may extend from the outer portion 921. At least a portion of the connecting portion 923 may move together with the OIS-y carrier 310. At least a portion of the connecting portion 923 may be arranged parallel to the optical axis direction. At least a portion of the connecting portion 923 of the inner substrate 920 may be formed to be movable in the x-axis direction. At least a portion of the connecting portion 923 of the inner substrate 920 may be formed to be movable in the y-axis direction. The connecting portion 923 may include a flexible substrate. The connecting portion 923 may have ductility. The connecting portion 923 may include a flexible printed circuit board (FPCB). The connecting portion 923 may include an elastic portion. The connecting portion 923 may include an elastic member.

[0145] At least a portion of the connecting portion 923 of the inner substrate 920 may be formed to be movable in the x-axis and y-axis directions. The connecting portion 923 may include an x-axis flow connecting portion 923-1. The x-axis flow connecting portion 923-1 may support the OIS-y moving portion 300 so that it is movable in the x-axis direction. The x-axis flow connecting portion 923-1 may support the OIS-y carrier 310 so that it is movable in the x-axis direction. The x-axis flow connecting portion 923-1 may be arranged parallel to the y-axis. The x-axis flow connecting portion 923-1 may be arranged parallel to the optical axis. The x-axis flow connecting portion 923-1 may include first to third portions that overlap in the optical axis direction. The x-axis flow connecting portion 923-1 may have a curved shape.

[0146] The connecting portion 923 may include a y-axis flow connecting portion 923-2. The y-axis flow connecting portion 923-2 may support the OIS-y moving portion 300 so that it can move in the y-axis direction. The y-axis flow connecting portion 923-2 may support the OIS-y carrier 310 so that it can move in the y-axis direction. The y-axis flow connecting portion 923-2 may be arranged parallel to the x-axis. The y-axis flow connecting portion 923-2 may be arranged parallel to the optical axis. The y-axis flow connecting portion 923-2 may overlap with the inner portion 922 in the optical axis direction. The y-axis flow connecting portion 923-2 may have a curved shape.

[0147] Hereinafter, one of the "x-axis flow connecting portion 923-1" and the "y-axis flow connecting portion 923-2" may be referred to as the "first connecting portion," and the other may be referred to as the "second connecting portion."

[0148] The configuration of the lens driving device according to the modified example will be described below with reference to the drawings.

[0149] Fig. 26 is a perspective view of a lens driving device according to a modified example, with the cover omitted. Fig. 27 is a cross-sectional view of Fig. 26 cut in a direction perpendicular to the optical axis and viewed from above.

[0150] In a variant, the OIS-y carrier 310-1 may include a sidewall on which the AF coil 720-1 is disposed.

[0151] The cover 120 may include first and second side plates disposed opposite to each other, and third and fourth side plates disposed opposite to each other. As shown in FIG. 27 , when viewed from above, the outer surface of the AF magnet 710-1 may be disposed at an incline between the second and fourth side plates of the cover 120. The AF magnet 710-1 may be disposed at an incline between the side plates of the cover 120. The AF coil 720-1 may be disposed at an incline between the side plates of the cover 120. The AF yoke 740-1 may be disposed at an incline between the side plates of the cover 120. The AF ball pressure yoke 880-1 may be disposed at an incline between the side plates of the cover 120.

[0152] The positions of the AF guide balls 830-1 may be changed compared to this embodiment. One set of the AF guide balls 830-1 may be moved toward the center compared to this embodiment. The structural diagram of the AF carrier 830-1 on which the AF guide balls 830-1 are arranged may also be changed.

[0153] The inner substrate 920-1 may include a first portion 922-1 disposed on a sidewall of the OIS-y carrier 310-1. The AF coil 720-1 may be disposed on the first portion 922-1 of the inner substrate 920-1. The AF ball pressure yoke 880-1 may be disposed on the first portion 922-1 of the inner substrate 920-1.

[0154] In a modified example, the AF magnet 710-1 and the AF coil 720-1 may be arranged at an angle in the corner region. In this modified example, the AF magnet 710-1 and the AF coil 720-1 are arranged so as not to be parallel to the side plate 122 of the cover 120, thereby making it possible to secure more space inside the cover 120. This makes it possible to obtain a greater driving force in this modified example compared to the present embodiment.

[0155] Hereinafter, autofocus (AF) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0156] 28 to 30 are diagrams illustrating autofocus driving of the lens driving device according to this embodiment. Fig. 28 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. 29 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. 30 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.

[0157] 28, 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 720. In this case, the moving unit may be the AF moving unit 400.

[0158] When a forward current is applied to the AF coil 720, the AF magnet 710 can move upward in the optical axis direction due to electromagnetic interaction between the AF coil 720 and the AF magnet 710 (see A in FIG. 29). At this time, the AF carrier 410 can move upward in the optical axis direction together with the AF magnet 710. Furthermore, the lens can move upward in the optical axis direction together with the AF carrier 410. Accordingly, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0159] When a reverse current is applied to the AF coil 720, the AF magnet 710 can move downward in the optical axis direction due to electromagnetic interaction between the AF coil 720 and the AF magnet 710 (see B in FIG. 30). At this time, the AF carrier 410 can move downward in the optical axis direction together with the AF magnet 710. Furthermore, the lens can move downward in the optical axis direction together with the AF carrier 410. Accordingly, the distance between the lens and the image sensor changes, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0160] Meanwhile, during the movement of the AF magnet 710, the AF sensor 730 can sense the strength of the magnetic field of the AF magnet 710 and detect the amount of movement and position of the lens in the optical axis direction. The amount of movement and position of the lens in the optical axis direction detected by the AF sensor 730 can be used for autofocus feedback control.

[0161] Hereinafter, optical image stabilization (OIS) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0162] 31 to 33 are diagrams illustrating the image stabilization drive of the lens driving device according to this embodiment. Fig. 31 is a cross-sectional view illustrating the state of the moving unit in the initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig. 32 is a cross-sectional view illustrating the state in which a current is applied to the OIS-x coil and the moving unit moves in the x-axis direction perpendicular to the optical axis. Fig. 33 is a cross-sectional view illustrating the state in which a current is applied to the OIS-y coil and the moving unit moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0163] 31 , the moving unit may be placed in an initial position where no current is applied to the OIS-x coil 520 and the OIS-y coil 620. At this time, the moving unit may be the OIS moving unit. The moving unit may be the OIS-x moving unit 200 and the OIS-y moving unit 300. Furthermore, the moving unit may include the OIS-x moving unit 200, the OIS-y moving unit 300, and the AF moving unit 400.

[0164] 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 coil 520 to move in the x-axis direction, which is perpendicular to the optical axis (see A in FIG. 32 ). At this time, the OIS-x carrier 210 moves in the x-axis direction together with the OIS-x coil 520. Furthermore, the OIS-y carrier 310, AF carrier 410, and lens move in the x-axis direction together with the OIS-x carrier 210. More specifically, when a forward current is applied to the OIS-x coil 520, the OIS-x coil 520, OIS-x carrier 210, OIS-y carrier 310, AF carrier 410, 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 coil 520, the OIS-x carrier 210, the OIS-y carrier 310, the AF carrier 410, and the lens can move in the other direction on the x-axis.

[0165] 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. 33 ). At this time, the OIS-y carrier 310 can move in the y-axis direction together with the OIS-y magnet 610. Furthermore, the AF carrier 410 and the lens can move in the y-axis direction together with the OIS-y carrier 310. More specifically, when a forward current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS-y carrier 310, the AF carrier 410, and the lens can move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS-y carrier 310, the AF carrier 410, and the lens can move in the other direction on the y-axis.

[0166] Meanwhile, the OIS-x sensor 530 senses the strength of the magnetic field of the OIS-x magnet 510 and can sense the relative movement amount and position of the OIS-x coil 520. The movement amount 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 movement amount and position of the OIS-y magnet 610. The movement amount and position sensed by the OIS-y sensor 630 can be used for y-axis direction image stabilization feedback control.

[0167] Hereinafter, a camera device according to this embodiment will be described with reference to the drawings.

[0168] FIG. 34 is an exploded perspective view of the camera device according to this embodiment.

[0169] The camera device 10A may include a camera module.

[0170] The camera device 10A may include a lens module 20. The lens module 20 may include at least one lens. The lens may be disposed at a position corresponding to the image sensor 60. The lens module 20 may include a lens and a barrel. The lens module 20 may be coupled to the AF carrier 410 of the lens driving device 10. The lens module 20 may be coupled to the AF carrier 410 by screws and / or adhesive. The lens module 20 can move integrally with the AF carrier 410.

[0171] The camera device 10A may include a filter 30. The filter 30 can block light of a specific frequency band from entering the image sensor 60, among the light passing through the lens module 20. The filter 30 may be arranged parallel to the xy plane. The filter 30 may be arranged between the lens module 20 and the image sensor 60. The filter 30 may be arranged on the sensor base 40. Alternatively, the filter 30 may be arranged on the base 110. The filter 30 may include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 60.

[0172] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens driver 10 and the printed circuit board 50. The sensor base 40 may include a protrusion 41 on which the filter 30 is disposed. An opening may be formed in the portion of the sensor base 40 where the filter 30 is disposed so that light passing through the filter 30 can be incident on the image sensor 60. An adhesive member may bond or adhere the base 310 of the lens driver 10 to the sensor base 40. The adhesive member may also serve to prevent foreign matter from entering the interior of the lens driver 10. The adhesive member may include one or more of epoxy, a heat-curable adhesive, and an ultraviolet-curable adhesive.

[0173] 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.

[0174] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured to receive light that has passed through a lens and a filter 30 and form an image. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. For example, the image sensor 60 may be attached to the printed circuit board 50 using surface mounting technology (SMT). For another example, the image sensor 60 may be attached to the printed circuit board 50 using flip chip technology. The image sensor 60 may be disposed so that its optical axis coincides with that of a lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens may be aligned. The image sensor 60 may convert light irradiated onto an effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 may be any of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

[0175] The camera device 10A may include a motion sensor 70. The motion sensor 70 may be mounted on the printed circuit board 50. The motion sensor 70 may be electrically connected to the control unit 80 via a circuit pattern provided on the printed circuit board 50. The motion sensor 70 may output rotational angular velocity information according to the movement of the camera device 10A. The motion sensor 70 may include a two-axis or three-axis gyro sensor or an angular velocity sensor.

[0176] 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.

[0177] 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.

[0178] Hereinafter, an optical device according to this embodiment will be described with reference to the drawings.

[0179] Fig. 35 is a perspective view of the optical device according to this embodiment, and Fig. 36 is a perspective view of the optical device according to a modified example.

[0180] 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.

[0181] 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 be capable of photographing a subject. The optical device 1 may include a display. The display may be disposed in the main body 20. The display may output one or more of a video and an image photographed by the camera device 10A. The display may be disposed on a first surface of the main body 20. The camera device 10A may be disposed on one or more of the first surface and a second surface opposite the first surface of the main body 20. As shown in FIG. 35, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 36, the camera device 10A-1 may have triple cameras arranged horizontally.

[0182] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art will understand that the present invention can be embodied in other specific forms without changing the technical spirit or essential characteristics thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and are not limiting.

Claims

1. Fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a third moving part disposed within the second moving part; a first driving unit that moves the first moving unit in a first direction perpendicular to the optical axis direction; a second driving unit that moves the second moving unit in a second direction perpendicular to the optical axis direction and the first direction; and a third drive unit that moves the third movement unit in the optical axis direction; the first driving unit includes a first magnet disposed on the fixed unit and a first coil disposed on the first moving unit, The lens driving device, wherein the second driving section includes a second magnet arranged on the second moving section and a second coil arranged on the first moving section.

2. The lens driving device according to claim 1 , wherein the third driving section includes a third magnet arranged on the third moving section and a third coil arranged on the second moving section.

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

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

5. The lens driving device according to claim 1 , further comprising a third ball disposed between the second moving portion and the third moving portion in the second direction.

6. the fixing portion includes a lower plate and a protruding portion protruding from the lower plate; the protrusion of the fixed portion is disposed within the first moving portion; The lens driving device according to claim 3 , wherein the first ball is disposed on the protrusion of the fixed part.

7. a first substrate including an outer portion disposed on the fixed portion, an inner portion disposed on the first moving portion, and a connecting portion connecting the outer portion and the inner portion; The lens driving device according to claim 1 , wherein at least a part of the connecting portion of the first substrate is formed to be movable in the first direction.

8. a second substrate including an outer portion disposed on the fixed portion, an inner portion disposed on the second moving portion, and a connecting portion connecting the outer portion and the inner portion; The lens driving device according to claim 1 , wherein at least a part of the connecting portion of the second substrate is formed to be movable in the first direction and the second direction.

9. The lens driving device according to claim 1 , further comprising a first yoke disposed on the first moving portion and configured to have an attractive force acting on the first magnet.

10. Fixed part; a first moving part disposed on the fixed part; a second moving part disposed within the first moving part; a third moving part disposed within the second moving part; a first driving unit that moves the first moving unit in a first direction perpendicular to the optical axis direction; a second driving unit that moves the second moving unit in a second direction perpendicular to the optical axis direction and the first direction; and a third drive unit that moves the third movement unit in the optical axis direction; the first moving part includes a first portion disposed outside the fixed part, a ball disposed between the first portion of the first moving part and the fixed part;

Images