Lens drive device, camera device, and optical device

Abstract

This embodiment relates to a lens driving device including a fixed section, a first moving section arranged within 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.

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 a photograph or video 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 depending on the distance to the subject, and an image stabilization function that prevents the focus from being shaken by the user's hand.

[0004] However, in order to arrange components such as magnets and coils to perform the autofocus and image stabilization functions, a size larger than the thickness of the smartphone is required in the optical axis direction, which creates the problem that the camera device attached to the smartphone protrudes compared to other parts of the smartphone. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Korean Patent Publication No. 10-2015-0118005 Summary of the Invention [Problem to be solved by the invention]

[0006] This embodiment aims to provide a camera device that has an autofocus function and an image stabilization function, while minimizing the size in the optical axis direction.

[0007] Furthermore, the present invention aims to provide a camera device that minimizes the amount of current consumed during autofocus (AF) operation. [Means for solving the problem]

[0008] The lens driving device of this embodiment may include a fixed section, a first moving section arranged within 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.

[0009] When the first moving unit is moved by the first driving unit, the second moving unit and the third moving unit may move together with the first moving unit.

[0010] When the second moving section is moved by the second driving section, the third moving section may move together with the second moving section.

[0011] The third driving unit includes a third coil and a third magnet that interact with each other, and when the second moving unit and the third moving unit are moved by the second driving unit, the distance between the opposing surfaces of the third coil and the third magnet may vary.

[0012] The lens driving device may include a first ball disposed between the first moving portion and the fixed portion in the second direction.

[0013] The fixed portion may include a groove, the first moving portion may include a first groove, the first ball may be disposed between the groove of the fixed portion and the first groove of the first moving portion, and at least one of the groove of the fixed portion and the first groove of the first moving portion may extend in the first direction longer than a diameter of the first ball.

[0014] The first moving part may include a first part arranged between the second moving part and the fixed part in the first direction, and a second ball may be arranged between the first part of the first moving part and the second moving part in the first direction.

[0015] The first moving part may include a second groove formed in the first part of the first moving part, the second moving part may include a first groove, the second ball may be disposed between the second groove of the first moving part and the first groove of the second moving part, and at least one of the second groove of the first moving part and the first groove of the second moving part may extend in the second direction longer than a diameter of the second ball.

[0016] The second moving part may include a first part arranged between the third moving part and the fixed part in the second direction, and a third ball may be arranged between the first part of the second moving part and the third moving part in the second direction.

[0017] The second moving part may include a second groove formed in the first part of the second moving part, the third moving part may include a groove, the third ball may be disposed between the second groove of the second moving part and the groove of the third moving part, and at least one of the second groove of the second moving part and the groove of the third moving part may extend in the optical axis direction longer than the diameter of the third ball.

[0018] The fixed portion may include a substrate, the first driving portion may include a first magnet arranged on the first moving portion, and a first coil arranged on the substrate at a position corresponding to the first magnet, and at least a portion of the first ball may overlap with the first magnet in the first direction.

[0019] The fixed portion may include a substrate, the second driving portion may include a second magnet arranged on the second moving portion, and a second coil arranged on the substrate at a position corresponding to the second magnet, and at least a portion of the second ball may overlap with the second magnet in the second direction.

[0020] The fixed portion may include a substrate, the third driving portion may include a third magnet arranged on the third moving portion, and a third coil arranged on the substrate at a position corresponding to the third magnet, and at least a portion of the third ball may overlap with the third magnet in the first direction.

[0021] The first driving unit may include a first magnet disposed on the first moving unit, and a first yoke may be disposed on the fixed unit, and an attractive force may act between the first magnet and the first yoke.

[0022] The second driving section may include a second magnet disposed on the second moving section, and a second yoke may be disposed on the first moving section, and an attractive force may act between the second magnet and the second yoke.

[0023] The second yoke may include a first portion disposed on one side of the second magnet in the second direction and a second portion disposed on the other side of the second magnet in the second direction, and the second magnet may include chamfer surfaces formed on edges of the second yoke closest to the first and second portions, respectively.

[0024] The third driving unit may include a third magnet disposed on the third moving unit, and a third yoke may be disposed on the second moving unit, and an attractive force acts between the third magnet and the third yoke.

[0025] The third yoke may include a first portion disposed on one side of the third magnet in the first direction and a second portion disposed on the other side of the third magnet in the first direction, and the third magnet may include chamfer surfaces formed on edges of the third yoke closest to the first portion and the second portion, respectively.

[0026] 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.

[0027] 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]

[0028] According to this embodiment, it is possible to achieve the autofocus function and the image stabilization function in a camera device that is minimized in size in the optical axis direction.

[0029] That is, according to this embodiment, the camera device does not protrude from the smartphone, but can still perform both the autofocus function and the image stabilization function.

[0030] According to this embodiment, it is possible to provide a camera device that is minimized in size also in the horizontal and vertical directions perpendicular to the optical axis.

[0031] In addition, the amount of current consumed when driving the autofocus (AF) is minimized, which increases the usage time of the smartphone. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 1 is a perspective view of a lens driving device according to an embodiment of the present invention.

[0033] [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG.

[0034] [Figure 3] FIG. 2 is a cross-sectional view taken along line BB in FIG.

[0035] [Figure 4] FIG. 2 is a cross-sectional view taken along CC in FIG.

[0036] [Figure 5] FIG. 2 is a cross-sectional view taken along line DD in FIG.

[0037] [Figure 6] 1 is a cross-sectional view of a lens driving device according to an embodiment of the present invention, cut in a direction perpendicular to an optical axis and viewed from above.

[0038] [Figure 7]1 is a cross-sectional view of the lens driving device according to the present embodiment, cut in a direction perpendicular to the optical axis so that an OIS guide ball can be seen, as viewed from above. FIG.

[0039] [Figure 8] FIG. 2 is an exploded perspective view of the lens driving device according to the embodiment.

[0040] [Figure 9] FIG. 9 is an exploded perspective view seen from a different direction from that of FIG. 8.

[0041] [Figure 10] FIG. 2 is a perspective view of the lens driving device according to the embodiment, with the cover omitted.

[0042] [Figure 11] FIG. 11 is a perspective view of the state in which the moving part is omitted in FIG.

[0043] [Figure 12] FIG. 12 is a perspective view of FIG. 11 as seen from another direction.

[0044] [Figure 13] FIG. 2 is a perspective view showing a moving portion of the lens driving device according to the embodiment.

[0045] [Figure 14] FIG. 14 is a perspective view of FIG. 13 as seen from another direction.

[0046] [Figure 15] FIG. 2 is a bottom view of the lens driving device according to the embodiment.

[0047] [Figure 16] 2 is a perspective view showing a first moving section and related configuration of the lens driving device according to the present embodiment. FIG.

[0048] [Figure 17] 2 is a perspective view showing a second moving section and related configurations of the lens driving device according to the present embodiment. FIG.

[0049] [Figure 18] FIG. 18 is a perspective view of FIG. 17 as seen from another direction.

[0050] [Figure 19] 3 is a perspective view showing a third moving section and related configurations of the lens driving device according to the present embodiment. FIG.

[0051] [Figure 20] FIG. 2 is a perspective view showing a substrate, a coil, and related components of the lens driving device according to the present embodiment.

[0052] [Figure 21] FIG. 2 is a perspective view showing a coil and a magnet of the lens driving device according to the embodiment.

[0053] [Figure 22] FIG. 10 is a cross-sectional perspective view of a lens driving device according to a modified example.

[0054] [Figure 23] FIG. 10 is a perspective view showing a moving section and related configuration of a lens driving device according to a modified example.

[0055] [Figure 24] FIG. 10 is a perspective view showing a coil, a magnet, a yoke, a ball, and a sensor of a lens driving device according to a modified example.

[0056] [Figure 25] 24 is a perspective view of a moving section and related configuration of a lens driving device according to a modified example, seen from a direction different from that of FIG. 23. FIG.

[0057] [Figure 26] FIG. 10 is a perspective view showing an AF magnet, an AF yoke, an AF guide ball, and an AF sensor of a lens driving device according to a modified example.

[0058] [Figure 27]27 is a cross-sectional view illustrating the state of the AF moving part in the initial state where no current is applied to the AF coil, illustrating the autofocus driving of the lens driving device according to the embodiment.

[0059] [Figure 28] 28 is a cross-sectional view illustrating the state in which a forward current is applied to the AF coil and the AF moving unit moves upward in the optical axis direction, illustrating the autofocus driving of the lens driving device according to the embodiment.

[0060] [Figure 29] 29 is a cross-sectional view illustrating the state in which a reverse current is applied to the AF coil and the AF moving unit moves downward in the optical axis direction, illustrating the autofocus driving of the lens driving device according to the embodiment.

[0061] [Figure 30] 30 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-y coil and the OIS-x coil, and is a diagram for explaining the image stabilization driving of the lens driving device according to the present embodiment.

[0062] [Figure 31] 31 is a diagram for explaining the image stabilization drive of the lens driving device according to the present embodiment. Fig. 31 is a cross-sectional view showing a state in which a current is applied to the OIS-y coil, and the OIS-x moving unit, the OIS-y moving unit, and the AF moving unit move in the y-axis direction perpendicular to the optical axis.

[0063] [Figure 32] 32 is a diagram for explaining the image stabilization drive of the lens driving device according to the present embodiment, and is a cross-sectional view showing a state in which a current is applied to the OIS-x coil, and the OIS-x moving unit and the AF moving unit move in the x-axis direction perpendicular to the optical axis.

[0064] [Figure 33] FIG. 2 is an exploded perspective view of the camera device according to the embodiment.

[0065] [Figure 34] FIG. 1 is a perspective view of an optical device according to an embodiment of the present invention.

[0066] [Figure 35] FIG. 10 is a perspective view of an optical device according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0067] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0068] However, the technical concept of the present invention is not limited to the described embodiments, but may be embodied in various other forms, and one or more of the components may be selectively combined or substituted between the embodiments within the scope of the technical concept of the present invention.

[0069] Furthermore, unless otherwise clearly defined, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a way that would be generally understood by a person of ordinary skill in the art to which the present invention belongs, and commonly used terms, such as dictionary-defined terms, may be interpreted in light of their meaning in the context of the relevant art.

[0070] Furthermore, the terms used in the embodiments of the present invention are intended to explain the embodiments and are not intended to limit the present invention.

[0071] In this specification, unless otherwise specified in the phrase, the singular also includes the plural, and when it says "at least one (or one or more) of A, B, and C," it may include one or more of all combinable combinations of A, B, and C.

[0072] Furthermore, when describing components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. are used only to distinguish the component from other components, and the terms do not limit the essence, order, or sequence of the components.

[0073] In addition, when it is described that one component is "coupled," "coupled," or "connected" to another component, this may include not only the case where one component is "coupled," "coupled," or "connected" directly to the other component, but also the case where one component is "coupled," "coupled," or "connected" by yet another component between the one component and the other component.

[0074] Furthermore, when described as being formed or disposed "above (above)" or "below (below)" each component, "above (above)" or "below (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 (above)" or "below (below)," it may mean not only the upper direction but also the lower direction based on one component.

[0075] The "optical axis (see OA in FIG. 27) direction" used below is defined as the optical axis direction of the lens and / or image sensor coupled to the lens driving device.

[0076] 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."

[0077] The term "autofocus (AF) function" used below is defined as a function that automatically focuses on a subject by adjusting the distance from the image sensor by moving the lens along the optical axis depending on the distance to the subject so that a clear image of the subject can be obtained on the image sensor. Also, "autofocus feedback (CLAF, closed-loop autofocus) control" is defined as sensing the distance between the image sensor and lens and controlling the lens position in real time with feedback to improve the accuracy of focus adjustment.

[0078] The term "optical image stabilization (OIS) function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset camera shake in order to prevent shaking of images or videos caused by the user's camera shake. Also, the term "closed-loop auto focus (CLAF) control" is defined as sensing the position of the lens relative to the image sensor and providing feedback to control the lens position in real time to improve the accuracy of camera shake correction.

[0079] In the following, one of the "OIS-y movement unit 200," "OIS-x movement unit 300," and "AF movement unit 400" may be referred to as the "first movement unit," one of the other may be referred to as the "second movement unit," and the remaining one may be referred to as the "third movement unit."

[0080] In the following, one of the "OIS-y driving unit 500," "OIS-x driving unit 600," and "AF driving unit 700" may be referred to as the "first driving unit," one of the other may be referred to as the "second driving unit," and the remaining one may be referred to as the "third driving unit."

[0081] In the following, one of the "OIS-y coil 510," "OIS-x coil 610," and "AF coil 710" may be referred to as the "first coil," one of the other may be referred to as the "second coil," and the remaining one may be referred to as the "third coil."

[0082] In the following, one of the "OIS-y magnet 520," "OIS-x magnet 620," and "AF magnet 720" may be referred to as the "first magnet," one of the other may be referred to as the "second magnet," and the remaining one may be referred to as the "third magnet."

[0083] In the following, one of the "OIS-y sensor 530," "OIS-x sensor 630," and "AF sensor 730" may be referred to as the "first sensor," one of the other may be referred to as the "second sensor," and the remaining one may be referred to as the "third sensor."

[0084] In the following, one of the "OIS-y guide ball 810," "OIS-x guide ball 820," and "AF guide ball 830" may be referred to as the "first ball," one of the other may be referred to as the "second ball," and the remaining one may be referred to as the "third ball."

[0085] In the following, either the "x-axis direction" or the "y-axis direction" may be referred to as the "first direction," and the other may be referred to as the "second direction."

[0086] In the following, one of the "OIS-y yoke 131," "OIS-x yoke 132," and "AF yoke 133" may be referred to as the "first yoke," one of the other may be referred to as the "second yoke," and the remaining one may be referred to as the "third yoke."

[0087] In the following, one of the "OIS-y yoke 910," "OIS-x yoke 920," and "AF yoke 930" may be referred to as the "first yoke," one of the other may be referred to as the "second yoke," and the remaining one may be referred to as the "third yoke."

[0088] The configuration of the lens driving device according to this embodiment will be described below with reference to the drawings.

[0089] 1, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. 1, FIG. 4 is a cross-sectional view taken along line CC in FIG. 1, FIG. 5 is a cross-sectional view taken along line DD in FIG. 1, FIG. 6 is a cross-sectional view of the lens driving device according to this embodiment cut in a direction perpendicular to the optical axis as viewed from above, FIG. 7 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 so that the OIS guide ball is visible, FIG. 8 is an exploded perspective view of the lens driving device according to this embodiment, FIG. 9 is an exploded perspective view as viewed from a different direction from FIG. 8, FIG. 10 is a perspective view of the lens driving device according to this embodiment with the cover removed, FIG. 11 is a perspective view of the lens driving device according to this embodiment with the moving part removed from FIG. 10, and FIG. 11 seen from another direction, FIG. 13 is a perspective view showing the moving part of the lens driving device according to this embodiment, FIG. 14 is a perspective view of FIG. 13 seen from another direction, FIG. 15 is a bottom view of the lens driving device according to this embodiment, FIG. 16 is a perspective view showing the first moving part and related configuration of the lens driving device according to this embodiment, FIG. 17 is a perspective view showing the second moving part and related configuration of the lens driving device according to this embodiment, FIG. 18 is a perspective view of FIG. 17 seen from another direction, FIG. 19 is a perspective view showing the third moving part and related configuration of the lens driving device according to this embodiment, FIG. 20 is a perspective view showing the substrate, coil, and related configuration of the lens driving device according to this embodiment, and FIG. 21 is a perspective view showing the coil and magnet of the lens driving device according to this embodiment.

[0090] 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.

[0091] 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 may move relative to the fixed part 100.

[0092] 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 OIS-y holder 210. The base 110 may be disposed below the OIS-x holder 310. The base 110 may be disposed below the AF holder 410. The base 110 may be coupled to the cover 140. The OIS-y holder 210, the OIS-x holder 310, and the AF holder 410 may be disposed on the base 110. The OIS-y holder 210, the OIS-x holder 310, and the AF holder 410 may be disposed on a bottom plate 111 of the base 110. The OIS-y holder 210, the OIS-x holder 310, and the AF holder 410 may be disposed within the base 110. The OIS-y holder 210 , the OIS-x holder 310 , and the AF holder 410 may be disposed within the side plate 112 of the base 110 .

[0093] The base 110 may include a lower plate 111. The base 110 may include side plates 112. The side plates 112 of the base 110 may be "sides." The side plates 112 of the base 110 may extend from the upper surface of the lower plate 111. The side plates 112 of the base 110 may include multiple side plates. The side plates 112 of the base 110 may include four side plates. The base 110 may include a first side portion and a second side portion opposite to each other, and a third side portion and a fourth side portion opposite to each other. In this case, the OIS-x coil 610 may be disposed at a position corresponding to the third side portion of the base 110. The distance between the optical axis and the fourth side portion of the base 110 may be closer than the distance between the optical axis and the third side portion of the base 110. That is, the optical axis may be biased from the central axis of the base 110 toward the fourth side portion of the base 110.

[0094] The base 110 may include a groove 113. The groove 113 may be an "OIS-y guide ball receiving groove." The OIS-y guide ball 810 may be disposed in the groove 113. The groove 113 may be in direct contact with the OIS-y guide ball 810. The groove 113 may be disposed in the y-axis direction perpendicular to the optical axis. The groove 113 may include a plurality of grooves. The groove 113 may include four grooves. The four grooves may be disposed parallel to one another. The groove 113 may include a first groove that contacts the OIS-y guide ball 810 at two points and a second groove that contacts the OIS-y guide ball 810 at one point. As a variant, both the first groove and the second groove may contact the OIS-y guide ball 810 at two points.

[0095] The lens driving device 10 may include a substrate 120. The fixed part 100 may include a substrate 120. The substrate 120 may be disposed on the base 110. The substrate 120 may be disposed on the side plate 112 of the base 110. The substrate 120 may be disposed on the outer surface of the side plate 142 of the cover 140. The substrate 120 may be disposed parallel to the optical axis. The substrate 120 may be a circuit board. The substrate 120 may be a printed circuit board. The substrate 120 may include an FPCB (Flexible Printed Circuit Board). The substrate 120 may be flexible. The substrate 120 may be bent. The substrate 120 may be bent multiple times. The substrate 120 may be bent twice.

[0096] The substrate 120 may include a first portion and a third portion disposed on opposite sides of each other, and a second portion connecting the first portion and the third portion. In this case, the OIS-y coil 510 may be disposed on the first portion of the substrate 120. The OIS-x coil 610 may be disposed on the second portion of the substrate 120. The AF coil 710 may be disposed on the third portion of the substrate 120.

[0097] The substrate 120 may include a body portion. The coils 510, 610, and 710 may be disposed in the body portion. The substrate 120 may include a terminal portion 121. The terminal portion 121 may extend downward from the body portion. The terminal portion 121 may be formed at a lower end portion of the substrate 120. The terminal portion 121 may protrude below the base 110. The terminal portion 121 may include a terminal.

[0098] The terminal unit 121 may include a plurality of terminals. The terminals of the substrate 120 may be electrically connected to the coils 510, 610, and 710. The terminals of the substrate 120 may be electrically connected to the OIS-y coil 510. The terminals of the substrate 120 may be electrically connected to the OIS-x coil 610. The terminals of the substrate 120 may be electrically connected to the AF coil 710. The terminals of the substrate 120 may be electrically connected to the sensors 530, 630, and 730. The terminals of the substrate 120 may be electrically connected to the OIS-y sensor 530. The terminals of the substrate 120 may be electrically connected to the OIS-x sensor 630. The terminals of the substrate 120 may be electrically connected to the AF sensor 730. The terminal unit 121 may be coupled to the printed circuit board 50. The terminal unit 121 may be coupled to the printed circuit board 50 by solder. The terminal portion 121 may be coupled to the printed circuit board 50 by a conductive member.

[0099] The lens driving device 10 may include a yoke 130. The fixed part 100 may include a yoke 130. The yoke 130 may be an "attractive member." The yoke 130 may be a "ball pressing member." The yoke 130 may be made of metal. An attractive force may be generated between the yoke 130 and the magnets 520, 620, and 720. The balls 810, 820, and 830 may be pressed by the attractive force between the yoke 130 and the magnets 520, 620, and 720. The yoke 130 may be disposed on the substrate 120. The yoke 130 may be disposed on the outer surface of the substrate 120.

[0100] The yoke 130 may include multiple yokes. The yoke 130 may include three yokes. The yoke 130 may include an OIS-y yoke 131, an OIS-x yoke 132, and an AF yoke 133. The OIS-y yoke 131, the OIS-x yoke 132, and the AF yoke 133 may be spaced apart from one another.

[0101] The yoke 130 may include an OIS-y yoke 131. The OIS-y yoke 131 may be disposed on a first portion of the substrate 120. The OIS-y yoke 131 may be disposed on an outer surface of the first portion of the substrate 120. The OIS-y yoke 131 may be disposed at a position corresponding to the OIS-y magnet 520. An attractive force may be generated between the OIS-y yoke 131 and the OIS-y magnet 520. The OIS-y guide ball 810 may be pressed by the attractive force between the OIS-y yoke 131 and the OIS-y magnet 520. The OIS-y guide ball 810 may be pressed between the OIS-y holder 210 and the base 110 by the attractive force between the OIS-y yoke 131 and the OIS-y magnet 520.

[0102] The yoke 130 may include an OIS-x yoke 132. The OIS-x yoke 132 may be disposed on the second portion of the substrate 120. The OIS-x yoke 132 may be disposed on an outer surface of the second portion of the substrate 120. The OIS-x yoke 132 may be disposed at a position corresponding to the OIS-x magnet 620. An attractive force may be generated between the OIS-x yoke 132 and the OIS-x magnet 620. The attractive force between the OIS-x yoke 132 and the OIS-x magnet 620 may pressurize the OIS-x guide ball 820. The attractive force between the OIS-x yoke 132 and the OIS-x magnet 620 may pressurize the OIS-x guide ball 820 between the OIS-x holder 310 and the OIS-y holder 210.

[0103] The yoke 130 may include an AF yoke 133. The AF yoke 133 may be disposed on a third portion of the substrate 120. The AF yoke 133 may be disposed on an outer surface of the third portion of the substrate 120. The AF yoke 133 may be disposed at a position corresponding to the AF magnet 720. An attractive force may be generated between the AF yoke 133 and the AF magnet 720. The attractive force between the AF yoke 133 and the AF magnet 720 may pressurize the AF guide ball 830. The attractive force between the AF yoke 133 and the AF magnet 720 may pressurize the AF guide ball 830 between the AF holder 410 and the OIS-x holder 310.

[0104] The lens driving device 10 may include a cover 140. The fixed part 100 may include the cover 140. The cover 140 may be disposed on the base 110. The cover 140 may be coupled to the base 110. The cover 140 may be fixed to the base 110. The cover 140 may house the OIS-y holder 210 therein. The cover 140 may house the OIS-x holder 310 therein. The cover 140 may house the AF holder 410 therein. The cover 140 may be a shielding member. The cover 140 may be a shielding can.

[0105] The cover 140 may include an upper plate 141. The upper plate 141 may be disposed on the moving part. The upward movement of the moving part may be restricted by the moving part coming into contact with the upper plate 141. The upper plate 141 may include a hole through which light passes.

[0106] The cover 140 may include side plates 142. The side plates 142 may extend from the upper plate 141. The side plates 142 may be disposed on the base 110. The side plates 142 may be disposed on stepped portions formed to protrude from the lower end of the outer surface of the base 110. The side plates 142 may include a plurality of side plates. The side plates 142 may include four side plates. The side plates 142 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.

[0107] 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 based on the fixed unit 100. The moving unit may move during AF driving. The moving unit may move during OIS driving. A lens may be coupled to the moving unit.

[0108] The lens driving device 10 may include an OIS-y moving unit 200. The OIS-y moving unit 200 may be arranged on the fixed unit 100. The OIS-y moving unit 200 may be arranged inside the fixed unit 100. The OIS-y moving unit 200 may be arranged on the fixed unit 100. The OIS-y moving unit 200 may be arranged between the fixed unit 100 and the OIS-x moving unit 300. The OIS-y moving unit 200 may be arranged between the fixed unit 100 and the AF moving unit 400. The OIS-y moving unit 200 may be movably arranged on the fixed unit 100. The OIS-y moving unit 200 may be moved in the y-axis direction relative to the fixed unit 100 by an OIS-y driving unit 500. The OIS-y moving unit 200 may move when the OIS is driven.

[0109] The OIS-y mover 200 may include a first portion disposed between the OIS-x mover 300 and the fixed portion 100 in the y-axis direction. An OIS-x guide ball 820 may be disposed between the first portion of the OIS-y mover 200 and the OIS-x mover 300 in the y-axis direction. The OIS-y mover 200 may include a second groove 213 formed in the first portion of the OIS-y mover 200.

[0110] The lens driving device 10 may include an OIS-y holder 210. The OIS-y movement unit 200 may include an OIS-y holder 210. The OIS-y holder 210 may be an "OIS-y carrier." The OIS-y holder 210 may be disposed within the base 110. The OIS-y holder 210 may be disposed on the base 110. The OIS-y holder 210 may be disposed within the cover 140. The OIS-y holder 210 may be disposed between the base 110 and the OIS-x holder 310. The OIS-y holder 210 may be disposed between the base 110 and the AF holder 410. The OIS-y holder 210 may be disposed to be movable in the y-axis direction.

[0111] The OIS-y holder 210 does not have to overlap with both the OIS-x holder 310 and the AF holder 410 in the optical axis direction. The OIS-y holder 210 may overlap with the OIS-x holder 310 and the AF holder 410 in a direction perpendicular to the optical axis. As a modified example, a stopper may be formed on the OIS-y holder 210. In this case, the stopper of the OIS-y holder 210 may overlap with one or more of the OIS-x holder 310 and the AF holder 410 in the optical axis direction.

[0112] The OIS-y holder 210 may include a hole 211. The hole 211 may be an "OIS-x holder avoidance hole." The hole 211 may be formed in a side plate of the OIS-y holder 210. The hole 211 may penetrate the OIS-y holder 210 in the y-axis direction. Alternatively, the hole 211 may be formed by a groove recessed from the upper surface or the lower surface of the OIS-y holder 210. A part of the OIS-x holder 310 may be disposed in the hole 211. A protruding portion of the OIS-x holder 310 may be disposed in the hole 211. An OIS-x magnet 620 may be disposed in the hole 211.

[0113] The OIS-y holder 210 may include a first groove 212. The first groove 212 may be an "OIS-y guide ball receiving groove." An OIS-y guide ball 810 may be disposed in the first groove 212. The first groove 212 may be in direct contact with the OIS-y guide ball 810. The first groove 212 may be disposed in the y-axis direction. The first groove 212 may include a plurality of grooves. The first groove 212 may include four grooves. The four grooves may be disposed parallel to one another. The first groove 212 may include a first groove that contacts the OIS-y guide ball 810 at two points and a second groove that contacts the OIS-y guide ball 810 at one point. As a variant, both the first groove and the second groove may contact the OIS-y guide ball 810 at two points.

[0114] The OIS-y holder 210 may include a second groove 213. The second groove 213 may be an "OIS-x ball receiving groove." The OIS-x guide ball 820 may be disposed in the second groove 213. The second groove 213 may be in direct contact with the OIS-x guide ball 820. The second groove 213 may be disposed in the x-axis direction. The second groove 213 may include multiple grooves. The second groove 213 may include four grooves. The second groove 213 may include a first groove that contacts the OIS-x guide ball 820 at two points and a second groove that contacts the OIS-x guide ball 820 at one point. As a variant, both the first groove and the second groove may contact the OIS-x guide ball 820 at two points.

[0115] The OIS-y holder 210 may include a groove. The groove may be an "OIS-y magnet accommodating groove." The groove may be formed on the outer surface of the OIS-y holder 210. The OIS-y magnet 520 may be disposed in the groove. The groove may be formed in a shape corresponding to the OIS-y magnet 520.

[0116] The OIS-y holder 210 may include a groove. The groove may be recessed and formed on the inner surface of the OIS-y holder 210. The AF holder 410 may be disposed in the groove. The OIS-y magnet 520 may be disposed on the opposite side of the groove.

[0117] The lens driving device 10 may include an OIS-x moving unit 300. The OIS-x moving unit 300 may be disposed on the fixed unit 100. The OIS-x moving unit 300 may be disposed within the fixed unit 100. The OIS-x moving unit 300 may be disposed on the fixed unit 100. The OIS-x moving unit 300 may be disposed within the OIS-y moving unit 200. The OIS-x moving unit 300 may be disposed between the fixed unit 100 and the AF moving unit 400. The OIS-x moving unit 300 may be disposed between the OIS-y moving unit 200 and the AF moving unit 400. The OIS-x moving unit 300 may be movably disposed. The OIS-x moving unit 300 may be moved in the x-axis direction relative to the fixed unit 100 and the OIS-y moving unit 200 by the OIS-x driving unit 600. The OIS-x moving unit 300 may move when the OIS is driven.

[0118] The OIS-x mover 300 may include a first portion disposed between the AF mover 400 and the fixed portion 100 in the x-axis direction. An AF guide ball 830 may be disposed between the first portion of the OIS-x mover 300 and the AF mover 400 in the x-axis direction. The OIS-x mover 300 may include a second groove 313 formed in the first portion of the OIS-x mover 300.

[0119] The lens driving device 10 may include an OIS-x holder 310. The OIS-x moving unit 300 may include an OIS-x holder 310. The OIS-x holder 310 may be an "OIS-x carrier." The OIS-x holder 310 may be disposed within the OIS-y holder 210. The OIS-x holder 310 may be disposed within the base 110. The OIS-x holder 310 may be disposed on the base 110. The OIS-x holder 310 may be disposed within the cover 140. The OIS-x holder 310 may be disposed between the base 110 and the AF holder 410. The OIS-x holder 310 may be disposed between the OIS-y holder 210 and the AF holder 410. The OIS-x holder 310 may be disposed to be movable in the x-axis direction. The OIS-x holder 310 may include a portion disposed between the OIS-y holder 210 and the AF holder 410 in the y-axis direction.

[0120] OIS-x holder 310 may include hole 311. Hole 311 may be an "AF holder avoidance hole." Hole 311 may be formed in a side plate of OIS-x holder 310. Hole 311 may penetrate OIS-x holder 310 in the x-axis direction. Alternatively, hole 311 may be formed by a groove recessed from the top surface or bottom surface of OIS-x holder 310. A part of AF holder 410 may be disposed in hole 311. A protruding portion of AF holder 410 may be disposed in hole 311. AF magnet 720 may be disposed in hole 311.

[0121] The OIS-x holder 310 may include a first groove 312. The first groove 312 may be an "OIS-x guide ball receiving groove." The OIS-x guide ball 820 may be disposed in the first groove 312. The first groove 312 may be in direct contact with the OIS-x guide ball 820. The first groove 312 may be disposed in the x-axis direction. The first groove 312 may include multiple grooves. The first groove 312 may include four grooves. The first groove 312 may include a first groove that contacts the OIS-x guide ball 820 at two points and a second groove that contacts the OIS-x guide ball 820 at one point. As a variant, both the first groove and the second groove may contact the OIS-x guide ball 820 at two points.

[0122] The OIS-x holder 310 may include a second groove 313. The second groove 313 may be an "AF guide ball receiving groove." The AF guide ball 830 may be disposed in the second groove 313. The second groove 313 may be in direct contact with the AF guide ball 830. The second groove 313 may be disposed in the optical axis direction. The second groove 313 may include multiple grooves. The second groove 313 may include two grooves. The second groove 313 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 variant, both the first groove and the second groove may contact the AF guide ball 830 at two points.

[0123] OIS-x holder 310 may include a groove. The groove may be an "OIS-x magnet accommodating groove." The groove may be formed on the outer surface of OIS-x holder 310. OIS-x magnet 620 may be disposed in the groove. The groove may be formed in a shape corresponding to OIS-x magnet 620.

[0124] The lens driving device 10 may include an AF moving unit 400. The AF moving unit 400 may be disposed in the fixed unit 100. The AF moving unit 400 may be disposed within the fixed unit 100. The AF moving unit 400 may be disposed on the fixed unit 100. The AF moving unit 400 may be disposed within the OIS-y moving unit 200. The AF moving unit 400 may be disposed within the OIS-x moving unit 300. The AF moving unit 400 may be disposed movably. The AF moving unit 400 may be moved in the optical axis direction relative to the fixed unit 100, the OIS-y moving unit 200, and the OIS-x moving unit 300 by an AF driving unit 700. The AF moving unit 400 may move during AF driving.

[0125] The lens driving device 10 may include an AF holder 410. The AF movement unit 400 may include an AF holder 410. The AF holder 410 may be a "bobbin." The AF holder 410 may be an "AF carrier." The AF holder 410 may be disposed in the OIS-x holder 310. The AF holder 410 may be disposed in the OIS-y holder 210. The AF holder 410 may be disposed in the base 110. The AF holder 410 may be disposed on the base 110. The AF holder 410 may be disposed in the cover 140. The AF holder 410 may be disposed so as to be movable in the optical axis direction.

[0126] The AF holder 410 may include a groove 411. The groove 411 may be an "AF guide ball receiving groove." 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 may include a plurality of grooves. The groove 411 may include two grooves. 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 variant, both the first groove and the second groove may contact the AF guide ball 830 at two points.

[0127] The AF holder 410 may include a groove. The groove may be an "AF magnet accommodating groove." The groove may be formed on the outer surface of the AF holder 410. The AF magnet 720 may be disposed in the groove. The groove may be formed in a shape corresponding to the AF magnet 720.

[0128] The lens driving device 10 may include a driving unit. The driving unit can move the moving unit relative to the fixed unit. The driving unit may include an AF driving unit 700. The driving unit may include OIS driving units 500 and 600. The driving unit may include a coil and a magnet.

[0129] The lens driving device 10 may include an OIS-y driving unit 500. The OIS-y driving unit 500 can move the OIS-y moving unit 200 in the y-axis direction, which is perpendicular to the optical axis direction. The OIS-y driving unit 500 can move the OIS-y holder 210 in the y-axis direction. The OIS-y driving unit 500 can move the OIS-y holder 210 in the y-axis direction by electromagnetic force. The OIS-y driving unit 500 may include a coil and a magnet.

[0130] When the OIS-y movement unit 200 is moved by the OIS-y driving unit 500, the OIS-x movement unit 300 and the AF movement unit 400 may move together with the OIS-y movement unit 200. The OIS-x movement unit 300 and the AF movement unit 400 may move together with the OIS-y movement unit 200 in the y-axis direction.

[0131] The lens driving device 10 may include an OIS-y coil 510. The OIS-y driving unit 500 may include an OIS-y coil 510. The OIS-y coil 510 can interact with an OIS-y magnet 520. The OIS-y coil 510 can move the OIS-y magnet 520 in the y-axis direction. The OIS-y coil 510 can move the OIS-y magnet 520 in the y-axis direction by interacting with the OIS-y magnet 520. The OIS-y coil 510 may face the OIS-y magnet 520. The OIS-y coil 510 may be positioned corresponding to the OIS-y magnet 520. The OIS-y coil 510 may overlap the OIS-y magnet 520 in the x-axis direction. The OIS-y coil 510 may be disposed on the substrate 120. The OIS-y coil 510 may be arranged on the substrate 120 at a position corresponding to the OIS-y magnet 520. The OIS-y coil 510 may be arranged on the base 110. The OIS-y coil 510 may be arranged on the side plate 142 of the cover 140. The OIS-y coil 510 may be arranged between the OIS-y magnet 520 and the cover 140. The OIS-y coil 510 may be arranged on the fixed part 100.

[0132] The lens driving device 10 may include an OIS-y magnet 520. The OIS-y driving unit 500 may include an OIS-y magnet 520. The OIS-y magnet 520 may be arranged in the OIS-y movement unit 200. The OIS-y magnet 520 may be arranged in the OIS-y holder 210. The OIS-y magnet 520 may be arranged on the outer surface of the OIS-y holder 210. The OIS-y magnet 520 may be fixed to the OIS-y holder 210. The OIS-y magnet 520 may be coupled to the OIS-y holder 210. The OIS-y magnet 520 may be adhered to the OIS-y holder 210 with an adhesive. The OIS-y magnet 520 may be arranged inside the cover 140. The OIS-y magnet 520 can interact with the OIS-y coil 510. The OIS-y magnet 520 can electromagnetically interact with the OIS-y coil 510. The OIS-y magnet 520 may be disposed at a position corresponding to the OIS-y coil 510. The OIS-y magnet 520 may face the OIS-y coil 510. The OIS-y magnet 520 may face the OIS-y coil 510. The OIS-y magnet 520 may overlap the OIS-y coil 510 in a direction perpendicular to the optical axis.

[0133] The OIS-y magnet 520 may be a four-pole magnet. The OIS-y magnet 520 may include a four-pole magnetized magnet. The OIS-y magnet 520 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be arranged spaced apart in the horizontal direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0134] In this embodiment, even when the OIS-y magnet 520 moves due to the interaction between the OIS-y coil 510 and the OIS-y magnet 520, the distance between the OIS-y coil 510 and the OIS-y magnet 520 may be kept constant.

[0135] The lens driving device 10 may include an OIS-y sensor 530. The OIS-y driving unit 500 may include an OIS-y sensor 530. The OIS-y sensor 530 may be disposed on the substrate 120. The OIS-y sensor 530 may include a Hall element (Hall IC). The OIS-y sensor 530 may include a Hall sensor. The OIS-y sensor 530 can sense the OIS-y magnet 520. The OIS-y sensor 530 can sense the magnetic force of the OIS-y magnet 520. The OIS-y sensor 530 can sense the movement of the OIS-y magnet 520. The movement amount or position of the OIS-y magnet 520 sensed by the OIS-y sensor 530 may be used as feedback for image stabilization driving (OIS) in the y-axis direction.

[0136] The OIS-y sensor 530 may be disposed within the OIS-y coil 510. The OIS-y sensor 530 may overlap with the OIS-y coil 510 in the optical axis direction. The OIS-y sensor 530 may overlap with the neutral portion of the OIS-y magnet 520 in the x-axis direction. As a variant, the OIS-y sensor 530 may be disposed outside the OIS-y coil 510. The OIS-y sensor 530 may face the OIS-y magnet 520. The OIS-y sensor 530 may be disposed at a position corresponding to the OIS-y magnet 520.

[0137] The lens driving device 10 may include an OIS-x driving unit 600. The OIS-x driving unit 600 can move the OIS-x moving unit 300 in the x-axis direction, which is perpendicular to the optical axis direction and the y-axis direction. The OIS-x driving unit 600 can move the OIS-x holder 310 in the x-axis direction. The OIS-x driving unit 600 can move the OIS-x holder 310 in the x-axis direction by electromagnetic force. The OIS-x driving unit 600 may include a coil and a magnet.

[0138] When the OIS-x movement section 300 is moved by the OIS-x driving section 600, the AF movement section 400 may move together with the OIS-x movement section 300. The AF movement section 400 may move together with the OIS-x movement section 300 in the x-axis direction.

[0139] The lens driving device 10 may include an OIS-x coil 610. The OIS-x driving unit 600 may include an OIS-x coil 610. The OIS-x coil 610 can interact with the OIS-x magnet 620. The OIS-x coil 610 can move the OIS-x magnet 620 in the x-axis direction. The OIS-x coil 610 can move the OIS-x magnet 620 in the x-axis direction by interacting with the OIS-x magnet 620. The OIS-x coil 610 may face the OIS-x magnet 620. The OIS-x coil 610 may be located at a position corresponding to the OIS-x magnet 620. The OIS-x coil 610 may overlap the OIS-x magnet 620 in the y-axis direction. The OIS-x coil 610 may be located on the substrate 120. The OIS-x coil 610 may be arranged on the substrate 120 at a position corresponding to the OIS-x magnet 620. The OIS-x coil 610 may be arranged on the base 110. The OIS-x coil 610 may be arranged on the side plate 142 of the cover 140. The OIS-x coil 610 may be arranged between the OIS-x magnet 620 and the cover 140. The OIS-x coil 610 may be arranged on the fixed part 100.

[0140] The lens driving device 10 may include an OIS-x magnet 620. The OIS-x driving unit 600 may include an OIS-x magnet 620. The OIS-x magnet 620 may be arranged in the OIS-x moving unit 300. The OIS-x magnet 620 may be arranged in the OIS-x holder 310. The OIS-x magnet 620 may be arranged on the outer surface of the OIS-x holder 310. The OIS-x magnet 620 may be fixed to the OIS-x holder 310. The OIS-x magnet 620 may be coupled to the OIS-x holder 310. The OIS-x magnet 620 may be adhered to the OIS-x holder 310 with an adhesive. The OIS-x magnet 620 may be arranged inside the cover 140. The OIS-x magnet 620 can interact with the OIS-x coil 610. The OIS-x magnet 620 can electromagnetically interact with the OIS-x coil 610. OIS-x magnet 620 may be disposed at a position corresponding to OIS-x coil 610. OIS-x magnet 620 may face OIS-x coil 610. OIS-x magnet 620 may face OIS-x coil 610. OIS-x magnet 620 may overlap OIS-x coil 610 in a direction perpendicular to the optical axis.

[0141] The OIS-x magnet 620 may be disposed in the hole 211 of the OIS-y holder 210. The OIS-x magnet 620 may overlap with the OIS-y holder 210 in the x-axis direction. The OIS-x magnet 620 may overlap with the OIS-y holder 210 in the optical axis direction.

[0142] The OIS-x magnet 620 may be a four-pole magnet. The OIS-x magnet 620 may include a four-pole magnetized magnet. The OIS-x magnet 620 may include a first magnet portion including a north pole and a south pole, and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a horizontal direction. The first magnet portion and the second magnet portion may be arranged spaced apart in the horizontal direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0143] In this embodiment, the distance between the OIS-x coil 610 and the OIS-x magnet 620 may be kept constant even when the OIS-x magnet 620 moves due to the interaction between the OIS-x coil 610 and the OIS-x magnet 620.

[0144] The lens driving device 10 may include an OIS-x sensor 630. The OIS-x driving unit 600 may include an OIS-x sensor 630. The OIS-x sensor 630 may be disposed on the substrate 120. The OIS-x sensor 630 may include a Hall IC. The OIS-x sensor 630 may include a Hall sensor. The OIS-x sensor 630 can sense the OIS-x magnet 620. The OIS-x sensor 630 can sense the magnetic force of the OIS-x magnet 620. The OIS-x sensor 630 can sense the movement of the OIS-x magnet 620. The movement amount or position of the OIS-x magnet 620 sensed by the OIS-x sensor 630 may be used as feedback for image stabilization driving (OIS) in the x-axis direction.

[0145] OIS-x sensor 630 may be disposed within OIS-x coil 610. OIS-x sensor 630 may overlap with OIS-x coil 610 in the optical axis direction. OIS-x sensor 630 may overlap with the neutral portion of OIS-x magnet 620 in the y-axis direction. As a variant, OIS-x sensor 630 may be disposed outside OIS-x coil 610. OIS-x sensor 630 may face OIS-x magnet 620. OIS-x sensor 630 may be disposed at a position corresponding to OIS-x magnet 620.

[0146] The lens driving device 10 may include an AF driving unit 700. The AF driving unit 700 can move the AF moving unit 400 in the optical axis direction. The AF driving unit 700 can move the AF holder 410 in the optical axis direction. The AF driving unit 700 can move the AF holder 410 in the optical axis direction by electromagnetic force. The AF driving unit 700 may include a coil and a magnet. The AF driving unit 700 may include a coil and a magnet that interact with each other.

[0147] When the OIS-x driver 600 moves the OIS-x mover 300 and the AF mover 400, the distance between the surfaces of the AF coil 710 and the AF magnet 720 that face each other may vary. When the OIS-y driver 500 moves the OIS-y mover 200, the OIS-x mover 300, and the AF mover 400, the distance between the surfaces of the AF coil 710 and the AF magnet 720 that face each other does not vary, and the AF magnet 720 may be eccentric with respect to the AF coil 710.

[0148] The lens driving device 10 may include an AF coil 710. The AF driving unit 700 may include an AF coil 710. The AF coil 710 can interact with an AF magnet 720. The AF coil 710 may be disposed on the opposite side of the optical axis from the OIS-y coil 510.

[0149] The AF coil 710 can move the AF magnet 720 in the optical axis direction. The AF coil 710 can move the AF magnet 720 in the optical axis direction by interacting with the AF magnet 720. The AF coil 710 may face the AF magnet 720. The AF coil 710 may be arranged at a position corresponding to the AF magnet 720. The AF coil 710 may overlap the AF magnet 720 in the x-axis direction. The AF coil 710 may be arranged on the substrate 120. The AF coil 710 may be arranged on the substrate 120 at a position corresponding to the AF magnet 720. The AF coil 710 may be arranged on the base 110. The AF coil 710 may be arranged on the side plate 142 of the cover 140. The AF coil 710 may be arranged between the AF magnet 720 and the cover 140. The AF coil 710 may be arranged on the fixed part 100.

[0150] The lens driving device 10 may include an AF magnet 720. The AF driving unit 700 may include an AF magnet 720. The AF magnet 720 may be disposed in the AF movement unit 400. The AF magnet 720 may be disposed in the AF holder 410. The AF magnet 720 may be disposed on the outer surface of the AF holder 410. The AF magnet 720 may be fixed to the AF holder 410. The AF magnet 720 may be coupled to the AF holder 410. The AF magnet 720 may be adhered to the AF holder 410 with an adhesive. The AF magnet 720 may be disposed within the cover 140. The AF magnet 720 may interact with the AF coil 710. The AF magnet 720 may electromagnetically interact with the AF coil 710. The AF magnet 720 may be disposed at a position corresponding to the AF coil 710. The AF magnet 720 may face the AF coil 710. The AF magnet 720 may face the AF coil 710. The AF magnet 720 may overlap the AF coil 710 in a direction perpendicular to the optical axis.

[0151] The AF magnet 720 may be disposed in the hole 311 of the OIS-x holder 310. The AF magnet 720 may overlap with the OIS-x holder 310 in the y-axis direction. The AF magnet 720 may overlap with the OIS-x holder 310 in the optical axis direction.

[0152] The AF magnet 720 may be a four-pole magnet. The AF magnet 720 may include a four-pole magnetized magnet. The AF magnet 720 may include a first magnet portion including a north pole and a south pole and a second magnet portion including a north pole and a south pole. The first magnet portion and the second magnet portion may be arranged in a vertical direction. The first magnet portion and the second magnet portion may be arranged spaced apart in the vertical direction, and a neutral portion may be arranged between the first magnet portion and the second magnet portion.

[0153] 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 disposed on the substrate 120. The AF sensor 730 may include a Hall IC. The AF sensor 730 may include a Hall sensor. The AF sensor 730 can sense the AF magnet 720. The AF sensor 730 can sense the magnetic force of the AF magnet 720. The AF sensor 730 can sense the movement of the AF magnet 720. The movement amount or position of the AF magnet 720 sensed by the AF sensor 730 may be used for autofocus (AF) feedback.

[0154] The AF sensor 730 may be disposed within the AF coil 710. The AF sensor 730 may overlap with the AF coil 710 in the optical axis direction. The AF sensor 730 may overlap with the neutral portion of the AF magnet 720 in the x-axis direction. As a modification, the AF sensor 730 may be disposed outside the AF coil 710. The AF sensor 730 may face the AF magnet 720. The AF sensor 730 may be disposed at a position corresponding to the AF magnet 720.

[0155] The AF sensor 730 may include a drive IC. In this case, the drive IC may be electrically connected to the AF coil 710. The drive IC may apply a current to the AF coil 710.

[0156] 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.

[0157] The lens driving device 10 may include an OIS-y guide ball 810. The OIS-y guide ball 810 can guide the movement of the OIS-y holder 210 relative to the base 110 in the y-axis direction. The OIS-y guide ball 810 may be arranged between the OIS-y moving unit 200 and the fixed unit 100 in the x-axis direction. The OIS-y guide ball 810 may be arranged between the base 110 and the OIS-y holder 210. The OIS-y guide ball 810 may be arranged between the base 110 and the OIS-y holder 210 in the x-axis direction. The OIS-y guide ball 810 may be arranged in the groove 113 of the base 110. The entire area from the bottom end to the top end of the OIS-y guide ball 810 may overlap with both the base 110 and the OIS-y holder 210 in the x-axis direction. The entire area of ​​the OIS-y guide ball 810 may overlap with the base 110 and the OIS-y holder 210 in the x-axis direction. The OIS-y guide ball 810 may be disposed between the inner surface of the base 110 and the outer surface of the OIS-y holder 210. When viewed from the outside of the OIS-y holder 210, the OIS-y guide ball 810 may overlap with the OIS-y magnet 520 in the horizontal direction. At least a portion of the OIS-y guide ball 810 may overlap with the OIS-y magnet 520 in the y-axis direction.

[0158] The OIS-y guide ball 810 may be disposed between the groove 113 of the fixed part 100 and the first groove 212 of the OIS-y movement part 200. At least one of the groove 113 of the fixed part 100 and the first groove 212 of the OIS-y movement part 200 may extend longer in the y-axis direction than the diameter of the OIS-y guide ball 810.

[0159] The OIS-y guide balls 810 may be disposed in the grooves 113 of the base 110. The OIS-y guide balls 810 may be disposed in the first grooves 212 of the OIS-y holder 210. The OIS-y guide balls 810 may include a first-1 ball that contacts the base 110 and the OIS-y holder 210 at four points, and a first-2 ball that contacts the base 110 and the OIS-y holder 210 at three points. The OIS-y guide balls 810 may be spherical. The OIS-y guide balls 810 may be made of metal. Grease may be applied to the surface of the OIS-y guide balls 810.

[0160] The OIS-y guide balls 810 may include multiple balls. The OIS-y guide balls 810 may include four balls. Two OIS-y guide balls 810 may be arranged on one side of the OIS-y magnet 520, and the remaining two OIS-y guide balls 810 may be arranged on the other side of the OIS-y magnet 520.

[0161] The lens driving device 10 may include an OIS-x guide ball 820. The OIS-x guide ball 820 can guide the movement of the OIS-x holder 310 relative to the OIS-y holder 210 in the x-axis direction. The OIS-x guide ball 820 may be disposed between the OIS-y holder 210 and the OIS-x holder 310. The OIS-x guide ball 820 may be disposed between the OIS-y holder 210 and the OIS-x holder 310 in the y-axis direction. The entire region of the OIS-x guide ball 820 from its lower end to its upper end may overlap with both the OIS-y holder 210 and the OIS-x holder 310 in the y-axis direction. The entire region of the OIS-x guide ball 820 may overlap with both the OIS-y holder 210 and the OIS-x holder 310 in the y-axis direction. The OIS-x guide ball 820 may be disposed between the inner surface of the OIS-y holder 210 and the outer surface of the OIS-x holder 310. When viewed from the outside of the OIS-x holder 310, the OIS-x guide ball 820 may overlap the OIS-x magnet 620 in the horizontal direction. At least a portion of the OIS-x guide ball 820 may overlap the OIS-x magnet 620 in the x-axis direction.

[0162] The OIS-x guide ball 820 may be disposed between the second groove 213 of the OIS-y movement unit 200 and the first groove 312 of the OIS-x movement unit 300. At least one of the second groove 213 of the OIS-y movement unit 200 and the first groove 312 of the OIS-x movement unit 300 may extend longer in the x-axis direction than the diameter of the OIS-x guide ball 820.

[0163] The OIS-x guide ball 820 may be disposed in the second groove 213 of the OIS-y holder 210. The OIS-x guide ball 820 may be disposed in the first groove 312 of the OIS-x holder 310. The OIS-x guide ball 820 may include a first-1 ball that contacts the OIS-y holder 210 and the OIS-x holder 310 at four points, and a first-2 ball that contacts the OIS-y holder 210 and the OIS-x holder 310 at three points. The OIS-x guide ball 820 may be spherical. The OIS-x guide ball 820 may be made of metal. Grease may be applied to the surface of the OIS-x guide ball 820.

[0164] The OIS-x guide balls 820 may include multiple balls. The OIS-x guide balls 820 may include four balls. Two OIS-x guide balls 820 may be arranged on one side of the OIS-x magnet 620, and the remaining two OIS-x guide balls 820 may be arranged on the other side of the OIS-x magnet 620.

[0165] The lens driving device 10 may include an AF guide ball 830. The AF guide ball 830 can guide movement of the AF holder 410 relative to the OIS-x holder 310 in the optical axis direction. The AF guide ball 830 may be disposed between the OIS-x holder 310 and the AF holder 410. The AF guide ball 830 may be disposed between the OIS-x holder 310 and the AF holder 410 in the x-axis direction. The AF guide ball 830 may be disposed between the inner surface of the OIS-x holder 310 and the outer surface of the AF holder 410. When viewed from the outside of the AF holder 410, the AF guide ball 830 may overlap with the AF magnet 720 in the horizontal direction. When viewed from above, at least a portion of the AF guide ball 830 may overlap with the AF magnet 720 in the y-axis direction. At least a portion of the AF guide ball 830 may overlap with the AF magnet 720 in the y-axis direction.

[0166] The AF guide ball 830 may be disposed between the second groove 213 of the OIS-x movement section 300 and the groove 411 of the AF movement section 400. At least one of the second groove 213 of the OIS-x movement section 300 and the groove 411 of the AF movement section 400 may extend longer in the optical axis direction than the diameter of the AF guide ball 830.

[0167] The AF guide ball 830 may be disposed in the second groove 313 of the OIS-x holder 310. The AF guide ball 830 may be disposed in the groove 411 of the AF holder 410. The AF guide ball 830 may include a 1-1 ball that contacts the OIS-x holder 310 and the AF holder 410 at four points, and a 1-2 ball that contacts the OIS-x holder 310 and the AF holder 410 at three points. The AF guide ball 830 may be spherical. The AF guide ball 830 may be made of metal. Grease may be applied to the surface of the AF guide ball 830.

[0168] The AF guide balls 830 may include a plurality of balls. The AF guide balls 830 may include six balls. Three of the AF guide balls 830 may be arranged on one side of the AF magnet 720, and the remaining three of the AF guide balls 830 may be arranged on the other side of the AF magnet 720.

[0169] The configuration of the lens driving device according to the modified example will be described below with reference to the drawings.

[0170] Fig. 22 is a cross-sectional perspective view of a lens driving device according to a modified example. Fig. 23 is a perspective view showing a moving section and related components of a lens driving device according to a modified example. Fig. 24 is a perspective view showing a coil, a magnet, a yoke, a ball, and a sensor of a lens driving device according to a modified example. Fig. 25 is a perspective view of the moving section and related components of a lens driving device according to a modified example, seen from a direction different from that of Fig. 23. Fig. 26 is a perspective view showing an AF magnet, an AF yoke, an AF guide ball, and an AF sensor of a lens driving device according to a modified example.

[0171] The following describes the configuration of the lens driving device 10 according to the modified example, focusing on the differences from the previous embodiment. Therefore, the technical configuration of the lens driving device 10 according to the modified example not described below may be analogously applied to the description of the previous embodiment.

[0172] In lens driving device 10 according to the modified example, the shapes and positions of OIS-x yoke 920 and AF yoke 930 may be changed compared to the previous embodiment. Also, in lens driving device 10 according to the modified example, OIS-x magnet 620a and AF magnet 720a may further include chamfered surfaces 621, 721 compared to the previous embodiment.

[0173] The lens driving device 10 may include an attractive member. The attractive member may be a pressure member. The attractive member may be a ball pressure member. The attractive member may be capable of exerting an attractive force on a magnet.

[0174] The lens driving device 10 may include a yoke 900. The attractive member may include the yoke 900. The yoke 900 may be made of metal. An attractive force may be generated between the yoke 900 and the magnets 520, 620a, and 720a. The attractive force between the yoke 900 and the magnets 520, 620a, and 720a may pressurize the balls 810, 820, and 830.

[0175] The lens driving device 10 may include an OIS-y yoke 910. The attractive member may include the OIS-y yoke 910. The yoke 900 may include the OIS-y yoke 910. The OIS-y yoke 910 may be disposed on the fixed part 100. The OIS-y yoke 910 may exert an attractive force on the OIS-y magnet 520. The OIS-y yoke 910 may be disposed on the substrate 120. The OIS-y yoke 910 may be disposed on a first portion of the substrate 120. The OIS-y yoke 910 may be disposed on an outer surface of the first portion of the substrate 120. The OIS-y yoke 910 may be disposed on the base 110. The OIS-y yoke 910 may be disposed on the cover 140. The OIS-y yoke 910 may be disposed at a position corresponding to the OIS-y magnet 520. An attractive force may be generated between the OIS-y yoke 910 and the OIS-y magnet 520. The OIS-y guide ball 810 may be compressed by the attractive force between the OIS-y yoke 910 and the OIS-y magnet 520. The OIS-y guide ball 810 may be compressed between the OIS-y holder 210 and the base 110 by the attractive force between the OIS-y yoke 910 and the OIS-y magnet 520.

[0176] Alternatively, the OIS-y yoke 910 may be replaced with a magnet. That is, the lens driving device 10 may include an OIS-y attractive magnet. An attractive force may act between the OIS-y attractive magnet and the OIS-y magnet 520.

[0177] The lens driving device 10 may include an OIS-x yoke 920. The attractive member may include an OIS-x yoke 920. The yoke 900 may include an OIS-x yoke 920. The OIS-x yoke 920 may be disposed on the OIS-y moving unit 200. The OIS-x yoke 920 may be disposed on the OIS-y holder 210. The OIS-x yoke 920 may be disposed on the outer surface of the OIS-y holder 210. The OIS-x yoke 920 may be disposed in a groove of the OIS-y holder 210. The OIS-y holder 210 may include a groove in which the OIS-x yoke 920 is disposed. The OIS-y holder 210 may include a groove having a shape corresponding to that of the OIS-x yoke 920.

[0178] In this embodiment, the OIS-x yoke 920 disposed on the fixed part 100 may be disposed on the OIS-y moving part 200 in the modified example. The attractive force between the OIS-x yoke and the OIS-x magnet does not change significantly in the modified example compared to this embodiment. Nevertheless, there is an advantage in that the attractive force between the OIS-x yoke and the OIS-x magnet does not act as resistance to image stabilization drive in the y-axis direction. Furthermore, in this embodiment, the attractive force between the OIS-x yoke 132 and the OIS-x magnet 620 presses the OIS-x magnet 620 toward the fixed part 100, which may act as resistance to image stabilization drive in the y-axis direction. However, in the modified example, the attractive force between the OIS-x yoke 920 and the OIS-x magnet 620a presses the OIS-x magnet 620a toward the OIS-y holder 210, but because the OIS-y holder 210 moves in the y-axis direction, it does not act as resistance.

[0179] The OIS-x yoke 920 may be disposed at a position corresponding to the OIS-x magnet 620a. An attractive force may act between the OIS-x yoke 920 and the OIS-x magnet 620a. An attractive force may be generated between the OIS-x yoke 920 and the OIS-x magnet 620a. The OIS-x guide ball 820 may be pressed by the attractive force between the OIS-x yoke 920 and the OIS-x magnet 620a. The OIS-x guide ball 820 may be pressed between the OIS-x holder 310 and the OIS-y holder 210 by the attractive force between the OIS-x yoke 920 and the OIS-x magnet 620a.

[0180] The OIS-x yoke 920 may include a first portion 921 arranged on one side of the OIS-x magnet 620a in the x-axis direction. The first portion 921 may be arranged long in the optical axis direction. The first portion 921 and the second portion 922 may be arranged side by side. The first portion 921 may be arranged parallel to the optical axis. The length of the first portion 921 in the optical axis direction may be longer than the length of the OIS-x magnet 620a in the optical axis direction. Alternatively, the length of the first portion 921 in the optical axis direction may be the same as the length of the OIS-x magnet 620a in the optical axis direction.

[0181] The OIS-x yoke 920 may include a second portion 922 arranged on the other side of the OIS-x magnet 620a in the x-axis direction. The second portion 922 may be arranged elongated in the optical axis direction. The second portion 922 may be arranged parallel to the optical axis. The length of the second portion 922 in the optical axis direction may be longer than the length of the OIS-x magnet 620a in the optical axis direction. Alternatively, the length of the second portion 922 in the optical axis direction may be the same as the length of the OIS-x magnet 620a in the optical axis direction.

[0182] The OIS-x yoke 920 may include a third portion 923 connecting the first portion 921 and the second portion 922. The third portion 923 of the OIS-x yoke 920 may connect the lower end of the first portion 921 to the lower end of the second portion 922. As a variant, the third portion 923 may be omitted. As another variant, the third portion 923 of the OIS-x yoke 920 may connect the upper end of the first portion 921 to the upper end of the second portion 922.

[0183] Alternatively, the OIS-x yoke 920 may be replaced with a magnet. That is, the lens driving device 10 may include an OIS-x attractive magnet. An attractive force may act between the OIS-x attractive magnet and the OIS-x magnet 620a.

[0184] The OIS-x magnet 620a may include a chamfered surface 621 formed on the edge closest to the first portion 921 of the OIS-x yoke 920. The OIS-x magnet 620a may include a chamfered surface 621 formed on the edge closest to the second portion 922 of the OIS-x yoke 920. The chamfered surface 621 may strengthen the attractive force between the OIS-x magnet 620a and the OIS-x yoke 920.

[0185] The OIS-x yoke 920 may overlap the OIS-x magnet 620a in the x-axis direction, or alternatively, the OIS-x yoke 920 may not overlap the OIS-x magnet 620a in the x-axis direction.

[0186] The lens driving device 10 may include an AF yoke 930. The attractive member may include the AF yoke 930. The yoke 900 may include the AF yoke 930. The AF yoke 930 may be disposed on the OIS-x moving unit 300. The AF yoke 930 may be disposed on the OIS-x holder 310. The AF yoke 930 may be disposed on the outer surface of the OIS-x holder 310. The AF yoke 930 may be disposed in a groove of the OIS-x holder 310. The OIS-x holder 310 may include a groove in which the AF yoke 930 is disposed. The OIS-x holder 310 may include a groove having a shape corresponding to that of the AF yoke 930.

[0187] In this embodiment, AF yoke 930, which is disposed on fixed unit 100, may be disposed on OIS-x moving unit 300 in the modified example. The attractive force between the AF yoke and the AF magnet does not change significantly in the modified example compared to this embodiment. Nevertheless, there is an advantage in that the attractive force between the AF yoke and the AF magnet does not act as resistance to image stabilization drive in the x-axis direction. Furthermore, in this embodiment, the attractive force between AF yoke 133 and AF magnet 720 presses AF magnet 720 toward fixed unit 100, which may act as resistance to image stabilization drive in the y-axis direction. However, in the modified example, although the attractive force between AF yoke 930 and AF magnet 720a presses AF magnet 720a toward OIS-x holder 310, OIS-x holder 310 moves in the x-axis direction, so it does not act as resistance.

[0188] The AF yoke 930 may be disposed at a position corresponding to the AF magnet 720a. An attractive force may act between the AF yoke 930 and the AF magnet 720a. An attractive force may be generated between the AF yoke 930 and the AF magnet 720a. The attractive force between the AF yoke 930 and the AF magnet 720a may pressurize the AF guide ball 830. The attractive force between the AF yoke 930 and the AF magnet 720a may pressurize the AF guide ball 830 between the OIS-x holder 310 and the AF holder 410.

[0189] The AF yoke 930 may include a first portion 931 disposed on one side of the AF magnet 720a in the y-axis direction. The first portion 931 may be disposed elongated in the optical axis direction. The first portion 931 and the second portion 932 may be disposed side by side. The first portion 931 and the second portion 932 may be disposed parallel to the optical axis. The length of the first portion 931 in the optical axis direction may be longer than the length of the AF magnet 720a in the optical axis direction. Alternatively, the length of the first portion 931 in the optical axis direction may be the same as the length of the AF magnet 720a in the optical axis direction.

[0190] The AF yoke 930 may include a second portion 932 disposed on the other side of the AF magnet 720a in the y-axis direction. The second portion 932 may be disposed elongated in the optical axis direction. The second portion 932 may be disposed parallel to the optical axis. The length of the second portion 932 in the optical axis direction may be longer than the length of the AF magnet 720a in the optical axis direction. Alternatively, the length of the second portion 932 in the optical axis direction may be the same as the length of the AF magnet 720a in the optical axis direction.

[0191] The AF yoke 930 may include a third portion 933 connecting the first portion 931 and the second portion 932. The third portion 933 of the AF yoke 930 may connect the lower end of the first portion 931 to the lower end of the second portion 932. As a modification, the third portion 933 may be omitted. As another modification, the third portion 933 of the AF yoke 930 may connect the upper end of the first portion 931 to the upper end of the second portion 932.

[0192] Alternatively, the AF yoke 930 may be replaced with a magnet. That is, the lens driving device 10 may include an AF attractive magnet. An attractive force may act between the AF attractive magnet and the AF magnet 720a.

[0193] The AF magnet 720a may include a chamfer surface 721 formed on an edge closest to the first portion 931 of the AF yoke 930. The AF magnet 720a may include a chamfer surface 721 formed on an edge closest to the second portion 932 of the AF yoke 930. The chamfer surface 721 may strengthen the attractive force between the AF magnet 720a and the AF yoke 930.

[0194] The AF yoke 930 does not have to overlap with the AF magnet 720a in the y-axis direction, or, as a modified example, the AF yoke 930 may overlap with the AF magnet 720a in the y-axis direction.

[0195] Hereinafter, autofocus (AF) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0196] 27 to 29 are diagrams for explaining autofocus driving of the lens driving device according to this embodiment. Fig. 27 is a cross-sectional view showing the state of the AF moving unit in the initial state when no current is applied to the AF coil. Fig. 28 is a cross-sectional view showing the state when a forward current is applied to the AF coil and the AF moving unit has moved upward in the optical axis direction. Fig. 29 is a cross-sectional view showing the state when a reverse current is applied to the AF coil and the AF moving unit has moved downward in the optical axis direction.

[0197] The moving unit may be disposed at a position spaced apart from both the upper plate 141 of the cover 140 and the base 110 in an initial position where no current is applied to the AF coil 710. In this case, the moving unit may be the AF moving unit 400.

[0198] When a forward current is applied to the AF coil 710, the AF magnet 720 may move upward in the optical axis direction due to electromagnetic interaction between the AF coil 710 and the AF magnet 720 (see A in FIG. 28). At this time, the AF holder 410 may move upward in the optical axis direction together with the AF magnet 720. Furthermore, the lens may move upward in the optical axis direction together with the AF holder 410. This changes the distance between the lens and the image sensor, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0199] When a reverse current is applied to the AF coil 710, the AF magnet 720 may move downward in the optical axis direction due to electromagnetic interaction between the AF coil 710 and the AF magnet 720 (see B in FIG. 29). At this time, the AF holder 410 may move downward in the optical axis direction together with the AF magnet 720. Furthermore, the lens may move downward in the optical axis direction together with the AF holder 410. This changes the distance between the lens and the image sensor, and the focus of the image formed on the image sensor through the lens may be adjusted.

[0200] Meanwhile, during the movement of the AF magnet 720, the AF sensor 730 can sense the strength of the magnetic field of the AF magnet 720 to detect the movement amount and position of the AF magnet 720. The movement amount and position of the AF magnet 720 sensed by the AF sensor 730 may be used for autofocus feedback control.

[0201] Hereinafter, optical image stabilization (OIS) driving of the lens driving device according to this embodiment will be described with reference to the drawings.

[0202] 30 to 32 are diagrams for explaining the image stabilization drive of the lens driving device according to this embodiment. Fig. 30 is a cross-sectional view showing the state of the moving unit in the initial state when no current is applied to the OIS-y coil and the OIS-x coil. Fig. 31 is a cross-sectional view showing the state when a current is applied to the OIS-y coil, and the OIS-x moving unit, the OIS-y moving unit, and the AF moving unit move in the y-axis direction perpendicular to the optical axis. Fig. 32 is a cross-sectional view showing the state when a current is applied to the OIS-x coil, and the OIS-x moving unit and the AF moving unit move in the x-axis direction perpendicular to the optical axis.

[0203] 30 , the moving section may be placed in an initial position where no current is applied to the OIS-y coil 510 and the OIS-x coil 610. At this time, the moving section may be the OIS-y moving section 200 and the OIS-x moving section 300. Furthermore, the moving section may include the OIS-y moving section 200, the OIS-x moving section 300, and the AF moving section 400.

[0204] When a current is applied to the OIS-y coil 510, the OIS-y magnet 520 may move in the y-axis direction perpendicular to the optical axis due to electromagnetic interaction between the OIS-y coil 510 and the OIS-y magnet 520 (see A in FIG. 31 ). At this time, the OIS-y holder 210 may move in the y-axis direction together with the OIS-y magnet 520. Furthermore, the OIS-x holder 310, the AF holder 410, and the lens may move in the y-axis direction together with the OIS-y holder 210. Furthermore, when a positive current is applied to the OIS-y coil 510, the OIS-y magnet 520, the OIS-y holder 210, the OIS-x holder 310, the AF holder 410, and the lens may move in one direction on the y-axis. Furthermore, when a reverse current is applied to the OIS-y coil 510, the OIS-y magnet 520, the OIS-y holder 210, the OIS-x holder 310, the AF holder 410, and the lens may move in other directions on the x-axis.

[0205] When a current is applied to the OIS-x coil 610, the OIS-x magnet 620 may move in the x-axis direction, which is perpendicular to the optical axis, due to electromagnetic interaction between the OIS-x coil 610 and the OIS-x magnet 620 (see B in FIG. 32 ). At this time, the OIS-x holder 310 may move in the x-axis direction together with the OIS-x magnet 620. Furthermore, the AF holder 410 and the lens may move in the x-axis direction together with the OIS-x holder 310. Furthermore, when a forward current is applied to the OIS-x coil 610, the OIS-x magnet 620, OIS-x holder 310, AF holder 410, and lens may move in one direction on the x-axis. Furthermore, when a reverse current is applied to the OIS-x coil 610, the OIS-x magnet 620, OIS-x holder 310, AF holder 410, and lens may move in the other direction on the x-axis.

[0206] Meanwhile, the OIS-y sensor 530 can sense the strength of the magnetic field of the OIS-y magnet 520 to detect the amount of movement and position of the OIS-y magnet 520. The amount of movement and position of the OIS-y magnet 520 detected by the OIS-y sensor 530 may be used for y-axis direction image stabilization feedback control. The OIS-x sensor 630 can sense the strength of the magnetic field of the OIS-x magnet 620 to detect the amount of movement and position of the OIS-x magnet 620. The amount of movement and position of the OIS-x magnet 620 detected by the OIS-x sensor 630 may be used for x-axis direction image stabilization feedback control.

[0207] Hereinafter, a camera device according to this embodiment will be described with reference to the drawings.

[0208] FIG. 33 is an exploded perspective view of the camera device according to this embodiment.

[0209] The camera device 10A may include a camera module.

[0210] 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 holder 410 of the lens driving device 10. The lens module 20 may be coupled to the AF holder 410 by screws and / or adhesive. The lens module 20 may move integrally with the AF holder 410.

[0211] 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 light passing through the lens module 20. The filter 30 can be arranged parallel to the xy plane. The filter 30 can be arranged between the lens module 20 and the image sensor 60. The filter 30 can be arranged in the sensor base 40. Alternatively, the filter 30 can be arranged in the base 110. The filter 30 can include an infrared filter. The infrared filter can block light in the infrared region from entering the image sensor 60.

[0212] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens driver 10 and the printed circuit board 50. The sensor base 40 may include a protrusion 41 on which the filter 30 is disposed. An opening may be formed in the portion of the sensor base 40 where the filter 30 is disposed so that light passing through the filter 30 can enter the image sensor 60. An adhesive member may bond or adhere the base 110 of the lens driver 10 to the sensor base 40. The adhesive member may also serve to prevent foreign matter from entering the interior of the lens driver 10. The adhesive member may include one or more of epoxy, a heat-curable adhesive, and an ultraviolet-curable adhesive.

[0213] 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 controller, etc. for converting an image formed on the image sensor 60 into an electrical signal and transmitting the signal to an external device.

[0214] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured to form an image when light passing through a lens and a filter 30 is incident on the image sensor 60. 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 may be aligned with the optical axis of the lens. The image sensor 60 may convert light irradiated onto an effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 may be any one of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

[0215] 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.

[0216] 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, and amplitude 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.

[0217] 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.

[0218] The optical device according to this embodiment will be described below with reference to the drawings.

[0219] FIG. 34 is a perspective view of the optical device according to this embodiment, and FIG. 35 is a perspective view of the optical device according to a modified example.

[0220] The optical device 1 may include one or more of a cellular phone, 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 include any device for taking images or photographs.

[0221] The optical device 1 may include a main body 20. The optical device 1 may include a camera device 10A. The camera device 10A may be disposed in the main body 20. The camera device 10A may photograph 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 of the main body 20 and a second surface opposite the first surface. As shown in FIG. 34, the camera device 10A may have triple cameras arranged vertically. As shown in FIG. 35, the camera device 10A-1 may have triple cameras arranged horizontally.

[0222] 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 of the present invention. Therefore, it should be understood that the above-described embodiments are illustrative and not limiting in any respect.

Claims

1. A fixed portion; a first moving part disposed within the fixed part; a second moving section disposed within the first moving section; a third moving section disposed within the second moving section; 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; a third driving unit that moves the third moving unit in the optical axis direction.

2. The lens driving device according to claim 1 , wherein when the first moving unit is moved by the first driving unit, the second moving unit and the third moving unit move together with the first moving unit.

3. The lens driving device according to claim 1 , wherein when the second moving unit is moved by the second driving unit, the third moving unit moves together with the second moving unit.

4. the third driving unit includes a third coil and a third magnet that interact with each other; The lens driving device according to claim 1 , wherein when the second moving section and the third moving section are moved by the second driving section, the distance between the surface of the third coil and the surface of the third magnet facing each other varies.

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

6. the fixing portion includes a groove, the first moving portion includes a first groove, the first ball is disposed between the groove of the fixed portion and the first groove of the first moving portion, The lens driving device according to claim 5 , wherein at least one of the groove of the fixed portion and the first groove of the first moving portion extends in the first direction by a length greater than a diameter of the first ball.

7. the first moving part includes a first portion disposed between the second moving part and the fixed part in the first direction, The lens driving device according to claim 1 , wherein a second ball is disposed between the first portion of the first moving part and the second moving part in the first direction.

8. the first moving portion includes a second groove formed in the first portion of the first moving portion; the second moving portion includes a first groove, the second ball is disposed between the second groove of the first moving portion and the first groove of the second moving portion, The lens driving device according to claim 7 , wherein at least one of the second groove of the first moving portion and the first groove of the second moving portion extends in the second direction longer than a diameter of the second ball.

9. the second moving portion includes a first portion disposed between the third moving portion and the fixed portion in the second direction, The lens driving device according to claim 1 , wherein a third ball is disposed between the first portion of the second moving part and the third moving part in the second direction.

10. the second moving portion includes a second groove formed in the first portion of the second moving portion; the third moving portion includes a groove, the third ball is disposed between the second groove of the second moving portion and the groove of the third moving portion, The lens driving device according to claim 9 , wherein at least one of the second groove of the second moving portion and the groove of the third moving portion extends in the optical axis direction to a length greater than a diameter of the third ball.

Images