Lens driving device, camera device, and optical device

Abstract

The present embodiment relates to a lens driving device comprising: a fixing unit; a first moving unit provided in the fixing unit; a second moving unit provided in the first moving unit; a third moving unit provided in the second moving unit; a first driving unit that moves the first moving unit in a first direction perpendicular to the optical axis direction; a second driving unit that moves the second moving unit in a second direction perpendicular to the optical axis direction and the first direction; and a third driving unit that moves the third moving unit 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 Art

[0002] A camera device is a device that takes pictures or videos of a subject, and is installed in optical instruments such as smartphones, drones, and vehicles.

[0003] An auto focus function that automatically adjusts the focus according to the distance of a subject is applied to a camera device. In addition, a hand shake correction function is applied to prevent a phenomenon in which the focus is shaken due to hand shake of the user.

[0004] However, in order to arrange configurations such as magnets and coils for performing autofocus functions and hand shake correction functions, a size larger than the thickness of the smartphone is required in the optical axis direction, so there is a problem that the camera device mounted on the smartphone protrudes more than other parts of the smartphone.

[0005] (Patent Document 1) KR 10-2015-0118005A Summary of the invention

[0006] Technical Topics

[0007] The present embodiment provides a camera device whose size in the optical axis direction is minimized even though it has an autofocus function and a hand-shake correction function.

[0008] Furthermore, the present embodiment aims to provide a camera apparatus in which the amount of current consumed when auto focus (AF) is driven is minimized.

[0009] Technical Solution

[0010] According to the present embodiment, the lens driving device may include: a fixing unit; a first moving unit, which is arranged inside the fixing unit; a second moving unit, which is arranged inside the first moving unit; a third moving unit, which is arranged inside the second moving unit; a first driving unit, which makes the first moving unit move along a first direction perpendicular to the optical axis direction; a second driving unit, which makes the second moving unit move along a second direction perpendicular to the optical axis direction and the first direction; and a third driving unit, which makes the third moving unit move along the optical axis direction.

[0011] 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.

[0012] When the second moving unit is moved by the second driving unit, the third moving unit may move together with the second moving unit.

[0013] The third driving unit includes a third coil and a third magnet interacting with each other, and when the second moving unit and the third moving unit are moved by the second driving unit, a distance between facing surfaces of the third coil and the third magnet may be changed.

[0014] The lens driving device may include a first spherical member disposed between the first moving unit and the fixing unit in the second direction.

[0015] The fixed unit includes a groove, the first movable unit includes a first groove, the first spherical member is arranged between the groove of the fixed unit and the first groove of the first movable unit, and at least one of the groove of the fixed unit and the first groove of the first movable unit can extend in the first direction longer than the diameter of the first spherical member.

[0016] The first moving unit includes a first portion disposed between the second moving unit and the fixed unit in the first direction, and a second spherical member may be disposed between the first portion of the first moving unit and the second moving unit in the first direction.

[0017] The first moving unit includes a second groove formed in a first part of the first moving unit, the second moving unit includes a first groove, the second spherical member is arranged between the second groove of the first moving unit and the first groove of the second moving unit, and at least one of the second groove of the first moving unit and the first groove of the second moving unit can extend in the second direction longer than a diameter of the second spherical member.

[0018] The second moving unit includes a first portion disposed between the third moving unit and the fixed unit in the second direction, and a third spherical member may be disposed between the first portion of the second moving unit and the third moving unit in the second direction.

[0019] The second movable unit includes a second groove formed in a first part of the second movable unit, the third movable unit includes a groove, the third spherical member is arranged between the second groove of the second movable unit and the groove of the third movable unit, and at least one of the second groove of the second movable unit and the groove of the third movable unit can extend in the optical axis direction longer than the diameter of the third spherical member.

[0020] The fixing unit includes a substrate, the first driving unit includes a first magnet disposed on the first moving unit, and a first coil disposed in the substrate at a position corresponding to the first magnet, and at least a portion of the first spherical member can overlap with the first magnet in a first direction.

[0021] The fixing unit includes a substrate, the second driving unit includes a second magnet disposed in the second moving unit, and a second coil disposed in the substrate at a position corresponding to the second magnet, and at least a portion of the second spherical member can overlap with the second magnet in the second direction.

[0022] The fixing unit includes a substrate, the third driving unit includes a third magnet disposed on the third moving unit, and a third coil disposed on the substrate at a position corresponding to the third magnet, and at least a portion of the third spherical member can overlap with the third magnet in the first direction.

[0023] The first driving unit may include a first magnet provided in the first moving unit, and a first yoke in which an attractive force acts on the first magnet may be provided in the fixing unit.

[0024] The second driving unit may include a second magnet provided in the second moving unit, and a second yoke exerting an attractive force on the second magnet may be provided in the first moving unit.

[0025] The second magnetic yoke may include a first portion and a second portion, the first portion being arranged on one side of the second magnet along the second direction, the second portion being arranged on the other side of the second magnet along the second direction, and the second magnet may include a chamfered surface formed at a corner of each of the first portion and the second portion closest to the second magnetic yoke.

[0026] The third driving unit may include a third magnet provided in the third moving unit, and a third yoke that applies an attractive force on the third magnet may be provided in the second moving unit.

[0027] The third magnetic yoke may include a first portion and a second portion, the first portion being arranged on one side of the third magnet along the first direction, the second portion being arranged on the other side of the third magnet along the first direction, and the third magnet may include a chamfered surface formed at an edge of each of the first portion and the second portion closest to the third magnetic yoke.

[0028] The camera device according to the present embodiment may include: a printed circuit board; an image sensor provided in the printed circuit board; a lens driving device provided in the printed circuit board; and a lens coupled to the lens driving device.

[0029] An optical device according to the present embodiment may include: a main body; a camera device provided in the main body; and a display provided in the main body and outputting at least one of an image and a video photographed by the camera device.

[0030] Beneficial effects

[0031] According to the present embodiment, an auto focus function and an image stabilization function can be performed in a camera device whose size in the optical axis direction is minimized.

[0032] That is, according to the present embodiment, even if the camera device does not protrude from the smartphone, both the autofocus function and the hand-shake correction function can be performed.

[0033] Furthermore, through the present embodiment, a camera device having minimized sizes in the horizontal direction and the vertical direction perpendicular to the optical axis can be provided.

[0034] In addition, the amount of current consumed during auto focus (AF) driving can be minimized, which can increase the usage time of the smartphone. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a perspective view of the lens driving device according to the present embodiment.

[0036] Figure 2 It is along Figure 1 A cross-sectional view taken along line AA.

[0037] Figure 3 It is along Figure 1 A cross-sectional view taken along line BB.

[0038] Figure 4 It is along Figure 1 A cross-sectional view taken along line CC.

[0039] Figure 5 It is along Figure 1 A cross-sectional view taken along line DD.

[0040] Figure 6 According to this embodiment, Figure 1 A cross-sectional view taken along line AB, cut in a direction perpendicular to the optical axis and observed from above.

[0041] Figure 7 According to this embodiment, Figure 1 A cross-sectional view taken along line AB, cut in a direction perpendicular to the optical axis and viewed from above so that the OIS guide spherical member is visible.

[0042] Figure 8 It is an exploded perspective view of the lens driving device according to the present embodiment.

[0043] Fig. 9 It is from Figure 8 Exploded stereograms taken from different directions.

[0044] Fig.10is a perspective view of the lens driving device according to the present embodiment, with the cover removed.

[0045] Fig.11 yes Fig.10 A perspective view of the mobile unit is removed.

[0046] Fig.12 Observed from different directions Fig.11 Stereoscopic diagram.

[0047] Fig.13 : is a perspective view illustrating a moving unit of the lens driving device according to the present embodiment.

[0048] Fig.14 Observed from different directions Fig.13 Stereoscopic diagram.

[0049] Fig.15 It is a bottom view of the lens driving device according to the present embodiment.

[0050] Fig.16 is a perspective view illustrating a first moving unit and related components of the lens driving device according to the present embodiment.

[0051] Fig.17 is a perspective view illustrating a second moving unit and related components of the lens driving device according to the present embodiment.

[0052] Fig.18 Observed from different directions Fig.17 Stereoscopic diagram.

[0053] Fig.19 is a perspective view illustrating a third moving unit and related components of the lens driving device according to the present embodiment.

[0054] Fig. 20 : is a perspective view illustrating a substrate, a coil, and related components of the lens driving device according to the present embodiment.

[0055] Fig.21 : is a perspective view illustrating a coil and a magnet of the lens driving device according to the present embodiment.

[0056] Fig. 22 is a cross-sectional perspective view of a lens driving device according to a modified embodiment.

[0057] Fig.23 is a perspective view illustrating a moving unit and related components of a lens driving device according to a modified embodiment.

[0058] Fig.24is a perspective view illustrating a coil, a magnet, a yoke, a spherical member, and a sensor of a lens driving device according to a modified embodiment.

[0059] Fig.25 It is from Fig.23 Different directions illustrate perspective views of a moving unit and related components of a lens driving device according to a modified embodiment.

[0060] Fig.26 is a perspective view illustrating an AF magnet, an AF yoke, an AF guide sphere, and an AF sensor of a lens driving device according to a modified embodiment.

[0061] Figure 27 to Figure 29 FIG. 1 is a diagram for explaining autofocus driving of the lens driving device according to the present embodiment. Fig. 27 is a cross-sectional view illustrating the appearance of the AF moving unit in an initial state in which no current is applied to the AF coil. Fig.28 is a cross-sectional view illustrating an appearance in which the AF moving unit moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.29 is a cross-sectional view illustrating an appearance in which the AF moving unit moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0062] Figure 30 to Figure 32 It is a diagram for explaining the hand shake correction drive of the lens driving device according to the present embodiment. Fig.30 is a cross-sectional view illustrating the appearance of the moving unit in an initial state in which no current is applied to the OIS-y coil and the OIS-x coil. Fig.31 is a cross-sectional view illustrating the appearance of the OIS-x moving unit, the OIS-y moving unit, and the AF moving unit which have moved in the y-axis direction perpendicular to the optical axis when a current is applied to the OIS-y coil. Fig.32 is a cross-sectional view illustrating the appearance of the OIS-x moving unit and the AF moving unit which have moved in the x-axis direction perpendicular to the optical axis when a current is applied to the OIS-x coil.

[0063] Fig.33 It is an exploded perspective view of the camera device according to this embodiment.

[0064] Fig.34 It is a perspective view of the optical device according to this embodiment.

[0065] Fig.35 is a perspective view of an optical device according to a modified embodiment. DETAILED DESCRIPTION

[0066] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0067] However, the technical concept of the present invention is not limited to some embodiments to be described, but can be implemented in various forms, and within the scope of the technical concept of the present invention, one or more of the constituent elements can be selectively combined or replaced between the various embodiments.

[0068] In addition, unless explicitly defined and described, the terms (including technical terms and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that can be generally understood by those skilled in the art, and commonly used terms, such as terms defined in dictionaries, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0069] In addition, the terms used in this specification are for describing the embodiments and are not intended to limit the present invention.

[0070] In this specification, unless specifically stated in a phrase, a singular form may include a plural form, and when described as "at least one (or more than one) of A and B and C", it may include one or more of all combinations that can be combined with A, B and C.

[0071] In addition, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only intended to distinguish a component from other components, and these terms do not limit the nature, order, or sequence of the components.

[0072] Furthermore, when a component is described as being “connected,” “coupled” or “interconnected” to another component, the component is not only directly connected, coupled or interconnected to the other component, but may also include a case where the component is “connected,” “coupled” or “interconnected” due to another component between the other components.

[0073] In addition, when described as being formed or disposed “on” or “below” each component, “on” or “below” means that it includes not only a case where two components are in direct contact, but also a case where one or more other components are formed or disposed between the two components. In addition, when expressed as “on” or “below”, it may include not only a meaning in an upward direction relative to a component, but also a meaning in a downward direction relative to a component.

[0074] The optical axis (see Fig. 27 The “OA) direction” is defined as the optical axis direction of the lens and / or image sensor connected to the lens driving device.

[0075] The "vertical direction" used hereinafter 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 hereinafter 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".

[0076] The "auto focus (AF) function" used hereinafter is defined as a function of automatically focusing on an object by adjusting the distance to the image sensor by moving the lens in the optical axis direction according to the distance of the object, so that a clear image of the object can be obtained on the image sensor. In addition, "closed loop auto focus (CLAF) control" is defined as detecting the distance between the image sensor and the lens and controlling the position of the lens through real-time feedback to improve the accuracy of focus adjustment.

[0077] The "optical image stabilization (OIS) function" used hereinafter is defined as a function of moving or tilting the lens in a direction perpendicular to the optical axis to offset hand shake so as to prevent the image or video from shaking due to the user's hand shake. In addition, "closed loop auto focus (CLAF) control" is defined as feedback that detects the position of the lens relative to the image sensor and controls the lens position in real time in order to improve the accuracy of hand shake correction.

[0078] Hereinafter, any one of the “OIS-y mobile unit 200,” the “OIS-x mobile unit 300,” and the “AF mobile unit 400” may be referred to as a “first mobile unit,” another mobile unit may be referred to as a “second mobile unit,” and yet another mobile unit may be referred to as a “third mobile unit.”

[0079] Hereinafter, any one of the “OIS-y driving unit 500 ,” the “OIS-x driving unit 600 ,” and the “AF driving unit 700 ” may be referred to as a “first driving unit,” another driving unit may be referred to as a “second driving unit,” and yet another driving unit may be referred to as a “third driving unit.”

[0080] Hereinafter, any one of the “OIS-y coil 510 ,” the “OIS-x coil 610 ,” and the “AF coil 710 ” may be referred to as a “first coil,” another coil may be referred to as a “second coil,” and yet another coil may be referred to as a “third coil.”

[0081] Hereinafter, any one of the “OIS-y magnet 520 ,” the “OIS-x magnet 620 ,” and the “AF magnet 720 ” may be referred to as a “first magnet,” another magnet may be referred to as a “second magnet,” and yet another magnet may be referred to as a “third magnet.”

[0082] Hereinafter, any one of the “OIS-y sensor 530 ,” the “OIS-x sensor 630 ,” and the “AF sensor 730 ” may be referred to as a “first sensor,” another sensor may be referred to as a “second sensor,” and yet another sensor may be referred to as a “third sensor.”

[0083] Hereinafter, any one of the guide spheres of “OIS-y guide sphere 810”, “OIS-x guide sphere 820” and “AF guide sphere 830” may be referred to as a “first sphere”, another guide sphere may be referred to as a “second sphere”, and yet another guide sphere may be referred to as a “third sphere”.

[0084] Hereinafter, either one of the “x-axis direction” and the “y-axis direction” may be referred to as a “first direction”, and the other may be referred to as a “second direction”.

[0085] Hereinafter, any one of “OIS-y yoke 131 ”, “OIS-x yoke 132 ” and “AF yoke 133 ” may be referred to as a “first yoke”, another yoke may be referred to as a “second yoke”, and yet another yoke may be referred to as a “third yoke”.

[0086] Hereinafter, any one of the “OIS-y yoke 910 ,” “OIS-x yoke 920 ,” and “AF yoke 930 ” may be referred to as a “first yoke,” another yoke may be referred to as a “second yoke,” and yet another yoke may be referred to as a “third yoke.”

[0087] Hereinafter, the configuration of a lens driving device according to the present embodiment is described with reference to the drawings.

[0088] Figure 1 is a perspective view of a lens driving device according to the present embodiment; Figure 2 It is along Figure 1 A cross-sectional view taken along line AA; Figure 3 It is along Figure 1 A cross-sectional view taken along line BB; Figure 4 It is along Figure 1 A cross-sectional view taken along line CC; Figure 5 It is along Figure 1 A cross-sectional view taken along line DD; Figure 6 According to this embodiment, Figure 1 A cross-sectional view taken along line AB, cut in a direction perpendicular to the optical axis and observed from above; Figure 7 According to this embodiment, Figure 1 A cross-sectional view taken along line AB of FIG. 1 , cut in a direction perpendicular to the optical axis and viewed from above so that the OIS guide spherical member is visible; Figure 8 is an exploded perspective view of the lens driving device according to the present embodiment; Fig. 9 It is from Figure 8 Exploded stereograms taken from different directions; Fig.10 is a perspective view of the lens driving device according to the present embodiment, wherein the cover is removed; Fig.11 yes Fig.10 A perspective view of the invention, wherein the mobile unit is removed; Fig.12 Observed from different directions Fig.11 Stereoscopic image of Fig.13 is a perspective view illustrating a moving unit of the lens driving device according to the present embodiment; Fig.14 Observed from different directions Fig.13 Stereoscopic image of Fig.15 is a bottom view of the lens driving device according to the present embodiment; Fig.16 is a perspective view illustrating a first moving unit and related components of the lens driving device according to the present embodiment; Fig.17 is a perspective view illustrating a second moving unit and related components of the lens driving device according to the present embodiment; Fig.18 Observed from different directions Fig.17 Stereoscopic image of Fig.19 is a perspective view illustrating a third moving unit and related components of the lens driving device according to the present embodiment; Fig. 20 is a perspective view illustrating a substrate, a coil, and related components of a lens driving device according to the present embodiment; and Fig.21 : is a perspective view illustrating a coil and a magnet of the lens driving device according to the present embodiment.

[0089] 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.

[0090] The lens driving device 10 may include a fixing unit 100. The fixing unit 100 may be a portion that is relatively fixed when the moving unit moves. The moving unit may move relative to the fixing unit 100.

[0091] The lens driving device 10 may include a base 110. The fixing unit 100 may include a 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 lower plate 111 of the base 110. The OIS-y holder 210, the OIS-x holder 310, and the AF holder 410 may be disposed inside the base 110. The OIS-y holder 210 , the OIS-x holder 310 , and the AF holder 410 may be disposed inside the side plate 112 of the base 110 .

[0092] The base 110 may include a lower plate 111. The base 110 may include a side plate 112. The side plate 112 of the base 110 may be a "side portion". The side plate 112 of the base 110 may extend from the upper surface of the lower plate 111. The side plate 112 of the base 110 may include a plurality of side plates. The side plate 112 of the base 110 may include four side plates. The base 110 may include a first side portion and a second side portion disposed opposite to each other, and a third side portion and a fourth side portion disposed opposite to each other. At this time, 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 disposed to be offset from the central axis of the base 110 toward the fourth side portion of the base 110.

[0093] The base 110 may include a groove 113. The groove 113 may be an "OIS-y guide ball accommodating 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 along a 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 each other. 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 modified embodiment, both the first groove and the second groove may contact the OIS-y guide ball 810 at two points.

[0094] The lens driving device 10 may include a substrate 120. The fixing unit 100 may include the substrate 120. The substrate 120 may be disposed in the base 110. The substrate 120 may be disposed in the side plate 112 of the base 110. The substrate 120 may be disposed on an 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 a flexible printed circuit board (FPCB). The substrate 120 may be flexible. The substrate 120 may also be bent. The substrate 120 may be bent multiple times. The substrate 120 may be bent twice.

[0095] The substrate 120 may include a first portion and a third portion disposed on opposite sides, and a second portion connecting the first portion and the third portion. In this case, the OIS-y coil 510 may be disposed in the first portion of the substrate 120. The OIS-x coil 610 may be disposed in the second portion of the substrate 120. The AF coil 710 may be disposed in the third portion of the substrate 120.

[0096] 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 downward from the base 110. The terminal portion 121 may include a terminal.

[0097] The terminal portion 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 portion 121 may be coupled to the printed circuit board 50. The terminal portion 121 may be coupled to the printed circuit board 50 via solder. The terminal portion 121 may be coupled to the printed circuit board 50 via a conductive member.

[0098] The lens driving device 10 may include a yoke 130. The fixing unit 100 may include a yoke 130. The yoke 130 may be an "attraction member". The yoke 130 may be a "spherical pressure member". The yoke 130 may be formed of metal. A force may be generated between the yoke 130 and the magnets 520, 620, and 720. The spherical pieces 810, 820, and 830 may be pressed by the force between the yoke 130 and the magnets 520, 620, and 720. The yoke 130 may be disposed in the substrate 120. The yoke 130 may be disposed on the outer surface of the substrate 120.

[0099] The yoke 130 may include a plurality of 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 each other.

[0100] The yoke 130 may include an OIS-y yoke 131. The OIS-y yoke 131 may be disposed in the first portion of the substrate 120. The OIS-y yoke 131 may be disposed on the 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 spherical member 810 may be pressurized by the attractive force between the OIS-y yoke 131 and the OIS-y magnet 520. The OIS-y guide spherical member 810 may be pressurized between the OIS-y retainer 210 and the base 110 by the attractive force between the OIS-y yoke 131 and the OIS-y magnet 520.

[0101] The yoke 130 may include an OIS-x yoke 132. The OIS-x yoke 132 may be disposed in 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 OIS-x guide spherical member 820 may be pressurized by the attractive force between the OIS-x yoke 132 and the OIS-x magnet 620. The OIS-x guide spherical member 820 may be pressurized between the OIS-x retainer 310 and the OIS-y retainer 210 by the attractive force between the OIS-x yoke 132 and the OIS-x magnet 620.

[0102] The yoke 130 may include an AF yoke 133. The AF yoke 133 may be disposed in the third portion of the substrate 120. The AF yoke 133 may be disposed on the 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 AF guide spherical member 830 may be pressed by the attractive force between the AF yoke 133 and the AF magnet 720. The AF guide spherical member 830 may be pressed between the AF retainer 410 and the OIS-x retainer 310 by the attractive force between the AF yoke 133 and the AF magnet 720.

[0103] The lens driving device 10 may include a cover 140. The fixing unit 100 may include the cover 140. The cover 140 may be disposed in 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 accommodate the OIS-y holder 210 therein. The cover 140 may accommodate the OIS-x holder 310 therein. The cover 140 may accommodate the AF holder 410 therein. The cover 140 may be a shielding member. The cover 140 may be a shielding cover.

[0104] The cover 140 may include an upper plate 141. The upper plate 141 may be disposed on the moving unit. The upward movement of the moving unit may be restricted by the moving unit contacting the upper plate 141. The upper plate 141 may include a hole through which light passes.

[0105] The cover 140 may include a side panel 142. The side panel 142 may extend from the upper panel 141. The side panel 142 may be disposed on the base 110. The side panel 142 may be disposed on a step portion protruding from a lower end portion of an outer surface of the base 110. The side panel 142 may include a plurality of side panels. The side panel 142 may include four side panels. The side panel 142 may include a first side panel and a second side panel disposed opposite to each other, and a third side panel and a fourth side panel disposed opposite to each other.

[0106] The lens driving device 10 may include a moving unit. The moving unit may be provided in the fixed unit 100. The moving unit may be provided inside the fixed unit 100. The moving unit may be provided on the fixed unit 100. The moving unit may be provided on the fixed unit 100 in a movably manner. The moving unit may be moved relative to the fixed unit 100 by the driving unit. The moving unit may move during AF driving. The moving unit may move during OIS driving. The lens may be coupled to the moving unit.

[0107] The lens driving device 10 may include an OIS-y moving unit 200. The OIS-y moving unit 200 may be disposed in the fixed unit 100. The OIS-y moving unit 200 may be disposed inside the fixed unit 100. The OIS-y moving unit 200 may be disposed on the fixed unit 100. The OIS-y moving unit 200 may be disposed between the fixed unit 100 and the OIS-x moving unit 300. The OIS-y moving unit 200 may be disposed between the fixed unit 100 and the AF moving unit 400. The OIS-y moving unit 200 may be movably disposed in 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 the OIS-y driving unit 500. The OIS-y moving unit 200 may move during OIS driving.

[0108] The OIS-y moving unit 200 may include a first portion disposed in the y-axis direction between the OIS-x moving unit 300 and the fixing unit 100. The OIS-x guide sphere 820 may be disposed in the y-axis direction between the first portion of the OIS-y moving unit 200 and the OIS-x moving unit 300. The OIS-y moving unit 200 may include a second groove 213 formed in the first portion of the OIS-y moving unit 200.

[0109] The lens driving device 10 may include an OIS-y holder 210. The OIS-y moving 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 inside the base 110. The OIS-y holder 210 may be disposed on the base 110. The OIS-y holder 210 may be disposed inside 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 configured to be movable along the y-axis direction.

[0110] In the optical axis direction, the OIS-y holder 210 may not overlap with both the OIS-x holder 310 and the AF holder 410. 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 embodiment, a stopper may be formed in the OIS-y holder 210. At this time, the stopper of the OIS-y holder 210 may overlap with at least one of the OIS-x holder 310 and the AF holder 410 in the optical axis direction.

[0111] 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 on a side plate of the OIS-y holder 210. The hole 211 may penetrate the OIS-y holder 210 along the y-axis direction. As a modified embodiment, the hole 211 may be formed as a groove recessed from the upper surface of the OIS-y holder 210 or a groove recessed from the lower surface. A portion 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. The OIS-x magnet 620 may be disposed in the hole 211.

[0112] The OIS-y retainer 210 may include a first groove 212. The first groove 212 may be an "OIS-y guide ball accommodating groove". The 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 along 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 each other. 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. In a modified embodiment, both the first groove and the second groove may contact the OIS-y guide ball 810 at two points.

[0113] The OIS-y retainer 210 may include a second groove 213. The second groove 213 may be an "OIS-x ball accommodating 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 along the x-axis direction. The second groove 213 may include a plurality of 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. In a modified embodiment, both the first groove and the second groove may contact the OIS-x guide ball 820 at two points.

[0114] The OIS-y holder 210 may include a groove. The groove may be an “OIS-y magnet receiving 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.

[0115] The OIS-y holder 210 may include a groove. The groove may be concavely formed on the inner side 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.

[0116] The lens driving device 10 may include an OIS-x moving unit 300. The OIS-x moving unit 300 may be disposed in the fixed unit 100. The OIS-x moving unit 300 may be disposed inside 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 inside 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 disposed in a movably manner. 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 during OIS driving.

[0117] The OIS-x moving unit 300 may include a first portion disposed in the x-axis direction between the AF moving unit 400 and the fixing unit 100. The AF guide sphere 830 may be disposed in the x-axis direction between the first portion of the OIS-x moving unit 300 and the AF moving unit 400. The OIS-x moving unit 300 may include a second groove 313 formed in the first portion of the OIS-x moving unit 300.

[0118] 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 inside the OIS-y holder 210. The OIS-x holder 310 may be disposed inside the base 110. The OIS-x holder 310 may be disposed on the base 110. The OIS-x holder 310 may be disposed inside 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 in a movably manner along 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 along the y-axis direction.

[0119] The OIS-x holder 310 may include a hole 311. The hole 311 may be an "AF holder avoidance hole". The hole 311 may be formed on a side plate of the OIS-x holder 310. The hole 311 may penetrate the OIS-x holder 310 along the x-axis direction. In a modified embodiment, the hole 311 may be formed as a groove recessed from the upper surface of the OIS-x holder 310 or a groove recessed from the lower surface. A portion of the AF holder 410 may be disposed in the hole 311. A protruding portion of the AF holder 410 may be disposed in the hole 311. The AF magnet 720 may be disposed in the hole 311.

[0120] The OIS-x retainer 310 may include a first groove 312. The first groove 312 may be an "OIS-x guide ball accommodating 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 along the x-axis direction. The first groove 312 may include a plurality of 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. In a modified embodiment, both the first groove and the second groove may contact the OIS-x guide ball 820 at two points.

[0121] The OIS-x holder 310 may include a second groove 313. The second groove 313 may be an "AF guide ball accommodating 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 along the optical axis direction. The second groove 313 may include a plurality of 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. In a modified embodiment, both the first groove and the second groove may contact the AF guide ball 830 at two points.

[0122] The OIS-x holder 310 may include a groove. The groove may be an “OIS-x magnet receiving groove”. The groove may be formed on the outer surface of the OIS-x holder 310. The OIS-x magnet 620 may be disposed in the groove. The groove may be formed in a shape corresponding to the OIS-x magnet 620.

[0123] The lens driving device 10 may include an AF moving unit 400. The AF moving unit 400 may be provided in the fixed unit 100. The AF moving unit 400 may be provided inside the fixed unit 100. The AF moving unit 400 may be provided on the fixed unit 100. The AF moving unit 400 may be provided inside the OIS-y moving unit 200. The AF moving unit 400 may be provided inside the OIS-x moving unit 300. The AF moving unit 400 may be provided in a movable manner. The AF moving unit 400 may be moved along the optical axis direction relative to the fixed unit 100, the OIS-y moving unit 200, and the OIS-x moving unit 300 by the AF driving unit 700. The AF moving unit 400 may move during AF driving.

[0124] The lens driving device 10 may include an AF holder 410. The AF moving unit 400 may include an AF holder 410. The AF holder 410 may be a "coil frame". The AF holder 410 may be an "AF carrier". The AF holder 410 may be disposed inside the OIS-x holder 310. The AF holder 410 may be disposed inside the OIS-y holder 210. The AF holder 410 may be disposed inside the base 110. The AF holder 410 may be disposed on the base 110. The AF holder 410 may be disposed inside the cover 140. The AF holder 410 may be disposed in a movably manner along the optical axis direction.

[0125] The AF holder 410 may include a groove 411. The groove 411 may be an "AF guide ball accommodating 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 along 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. In a modified embodiment, both the first groove and the second groove may contact the AF guide ball 830 at two points.

[0126] The AF holder 410 may include a groove. The groove may be an “AF magnet receiving 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.

[0127] The lens driving device 10 may include a driving unit. The driving unit may 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.

[0128] The lens driving device 10 may include an OIS-y driving unit 500. The OIS-y driving unit 500 may move the OIS-y moving unit 200 in a y-axis direction perpendicular to the optical axis direction. The OIS-y driving unit 500 may move the OIS-y holder 210 in the y-axis direction. The OIS-y driving unit 500 may move the holder 210 in the y-axis direction by an electromagnetic force OIS-y. The OIS-y driving unit 500 may include a coil and a magnet.

[0129] When the OIS-y moving unit 200 is moved by the OIS-y driving unit 500, the OIS-x moving unit 300 and the AF moving unit 400 may move together with the OIS-y moving unit 200. The OIS-x moving unit 300 and the AF moving unit 400 may move together with the OIS-y moving unit 200 in the y-axis direction.

[0130] 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 may interact with the OIS-y magnet 520. The OIS-y coil 510 may move the OIS-y magnet 520 in the y-axis direction. The OIS-y coil 510 may move the OIS-y magnet 520 in the y-axis direction by interacting with the OIS-y magnet 520. The OIS-y coil 510 may face the OIS-y magnet 520. The OIS-y coil 510 may face the OIS-y magnet 520. The OIS-y coil 510 may be disposed at a position corresponding to the OIS-y magnet 520. The OIS-y coil 510 may overlap with the OIS-y magnet 520 in the x-axis direction. The OIS-y coil 510 may be disposed in the substrate 120. The OIS-y coil 510 may be disposed in the substrate 120 at a position corresponding to the OIS-y magnet 520. The OIS-y coil 510 may be disposed in the base 110. The OIS-y coil 510 may be disposed on the side plate 142 of the cover 140. The OIS-y coil 510 may be disposed between the OIS-y magnet 520 and the cover 140. The OIS-y coil 510 may be disposed in the fixing unit 100.

[0131] 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 disposed in the OIS-y moving unit 200. The OIS-y magnet 520 may be disposed in the OIS-y holder 210. The OIS-y magnet 520 may be disposed on an 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 bonded to the OIS-y holder 210 with an adhesive. The OIS-y magnet 520 may be disposed inside the cover 140. The OIS-y magnet 520 may interact with the OIS-y coil 510. The OIS-y magnet 520 may electromagnetically interact with the OIS-y coil 510. The OIS-y magnet 520 may be disposed at a position corresponding to the OIS-y coil 510. The OIS-y magnet 520 and the OIS-y coil 510 may face each other. The OIS-y magnet 520 may face the OIS-y coil 510. The OIS-y magnet 520 may overlap with the OIS-y coil 510 in a direction perpendicular to the optical axis.

[0132] The OIS-y magnet 520 may be a quadrupole magnet. The OIS-y magnet 520 may include a quadrupole magnetized magnet. The OIS-y magnet 520 may include a first magnet unit and a second magnet unit, the first magnet unit including an N pole and an S pole, and the second magnet unit including an N pole and an S pole. The first magnet unit and the second magnet unit may be arranged in a horizontal direction. The first magnet unit and the second magnet unit may be arranged to be spaced apart from each other in the horizontal direction, and a neutral section may be provided between the first magnet unit and the second magnet unit.

[0133] In the present 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 maintained constant.

[0134] The lens driving device 10 may include an OIS-y sensor 530. The OIS-y driving unit 500 may include the OIS-y sensor 530. The OIS-y sensor 530 may be disposed in 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 may detect the OIS-y magnet 520. The OIS-y sensor 530 may detect the magnetic force of the OIS-y magnet 520. The OIS-y sensor 530 may detect the movement of the OIS-y magnet 520. The amount or position of the movement of the OIS-y magnet 520 detected by the OIS-y sensor 530 may be used for feedback of optical image stabilization (OIS) driving in the y-axis direction.

[0135] 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. In a modified embodiment, 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.

[0136] The lens driving device 10 may include an OIS-x driving unit 600. The OIS-x driving unit 600 may move the OIS-x moving unit 300 in an x-axis direction perpendicular to the optical axis direction and the y-axis direction. The OIS-x driving unit 600 may move the OIS-x holder 310 in the x-axis direction. The OIS-x driving unit 600 may 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.

[0137] When the OIS-x moving unit 300 is moved by the OIS-x driving unit 600, the AF moving unit 400 may move together with the OIS-x moving unit 300. The AF moving unit 400 may move along the x-axis direction together with the OIS-x moving unit 300.

[0138] 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 may interact with the OIS-x magnet 620. The OIS-x coil 610 may move the OIS-x magnet 620 in the x-axis direction. The OIS-x coil 610 may move the OIS-x magnet 620 in the x-axis direction by interacting with the OIS-x magnet 620. The OIS-x coil 610 and the OIS-x magnet 620 may face each other. The OIS-x coil 610 may face the OIS-x magnet 620. The OIS-x coil 610 may be disposed at a position corresponding to the OIS-x magnet 620. The OIS-x coil 610 may overlap with the OIS-x magnet 620 in the y-axis direction. The OIS-x coil 610 may be disposed in the substrate 120. The OIS-x coil 610 may be disposed in the substrate 120 at a position corresponding to the OIS-x magnet 620. The OIS-x coil 610 may be disposed in the base 110. The OIS-x coil 610 may be disposed in the side plate 142 of the cover 140. The OIS-x coil 610 may be disposed between the OIS-x magnet 620 and the cover 140. The OIS-x coil 610 may be disposed in the fixing unit 100.

[0139] 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 disposed in the OIS-x moving unit 300. The OIS-x magnet 620 may be disposed in the OIS-x holder 310. The OIS-x magnet 620 may be disposed on an 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 attached to the OIS-x holder 310 by an adhesive. The OIS-x magnet 620 may be disposed on the inner side of the cover 140. The OIS-x magnet 620 may interact with the OIS-x coil 610. The OIS-x magnet 620 may electromagnetically interact with the OIS-x coil 610. The OIS-x magnet 620 may be disposed at a position corresponding to the OIS-x coil 610. The OIS-x magnet 620 and the OIS-x coil 610 may face each other. The OIS-x magnet 620 may face the OIS-x coil 610. The OIS-x magnet 620 may overlap with the OIS-x coil 610 in a direction perpendicular to the optical axis.

[0140] 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 the OIS-y holder 210 in the x-axis direction. The OIS-x magnet 620 may overlap the OIS-y holder 210 in the optical axis direction.

[0141] The OIS-x magnet 620 may be a quadrupole magnet. The OIS-x magnet 620 may include a quadrupole magnetized magnet. The OIS-x magnet 620 may include a first magnet unit and a second magnet unit, the first magnet unit including an N pole and an S pole, and the second magnet unit including an N pole and an S pole. The first magnet unit and the second magnet unit may be arranged in a horizontal direction. The first magnet unit and the second magnet unit may be arranged to be spaced apart from each other in the horizontal direction, and a neutral portion may be provided between the first magnet unit and the second magnet unit.

[0142] In the present embodiment, even when the OIS-x magnet 620 moves due to the interaction between the OIS-x coil 610 and the OIS-x magnet 620 , the distance between the OIS-x coil 610 and the OIS-x magnet 620 may be maintained constant.

[0143] The lens driving device 10 may include an OIS-x sensor 630. The OIS-x driving unit 600 may include the OIS-x sensor 630. The OIS-x sensor 630 may be disposed in the substrate 120. The OIS-x sensor 630 may include a Hall element (Hall IC). The OIS-x sensor 630 may include a Hall sensor. The OIS-x sensor 630 may detect the OIS-x magnet 620. The OIS-x sensor 630 may detect the magnetic force of the OIS-x magnet 620. The OIS-x sensor 630 may detect the movement of the OIS-x magnet 620. The amount or position of the movement of the OIS-x magnet 620 detected by the OIS-x sensor 630 may be used for feedback of optical image stabilization (OIS) driving in the x-axis direction.

[0144] The OIS-x sensor 630 may be disposed inside the OIS-x coil 610. The OIS-x sensor 630 may overlap with the OIS-x coil 610 in the optical axis direction. The OIS-x sensor 630 may overlap with the neutral portion of the OIS-x magnet 620 in the y-axis direction. In a modified embodiment, the OIS-x sensor 630 may be disposed outside the OIS-x coil 610. The OIS-x sensor 630 may face the OIS-x magnet 620. The OIS-x sensor 630 may be disposed at a position corresponding to the OIS-x magnet 620.

[0145] The lens driving device 10 may include an AF driving unit 700. The AF driving unit 700 may move the AF moving unit 400 along the optical axis direction. The AF driving unit 700 may move the AF holder 410 along the optical axis direction. The AF driving unit 700 may move the AF holder 410 along 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.

[0146] When the OIS-x moving unit 300 and the AF moving unit 400 are moved by the OIS-x driving unit 600, the distance between the facing surfaces of the AF coil 710 and the AF magnet 720 may change. When the OIS-y moving unit 200, the OIS-x moving unit 300, and the AF moving unit 400 are moved by the OIS-y driving unit 500, the distance between the facing surfaces of the AF coil 710 and the AF magnet 720 may not change, and the AF magnet 720 may be eccentric with respect to the AF coil 710.

[0147] The lens driving device 10 may include an AF coil 710. The AF driving unit 700 may include the AF coil 710. The AF coil 710 may interact with the AF magnet 720. The AF coil 710 may be disposed at an opposite side of the OIS-y coil 510 with respect to the optical axis.

[0148] The AF coil 710 may move the AF magnet 720 in the optical axis direction. The AF coil 710 may move the AF magnet 720 in the optical axis direction by interacting with the AF magnet 720. The AF coil 710 and the AF magnet 720 may face each other. The AF coil 710 may face the magnet 720. The AF coil 710 may be disposed at a position corresponding to the AF magnet 720. The AF coil 710 may overlap with the AF magnet 720 in the x-axis direction. The AF coil 710 may be disposed in the substrate 120. The AF coil 710 may be disposed in the substrate 120 at a position corresponding to the AF magnet 720. The AF coil 710 may be disposed in the base 110. The AF coil 710 may be disposed in the side plate 142 of the cover 140. The AF coil 710 may be disposed between the AF magnet 720 and the cover 140. The AF coil 710 may be disposed in the fixing unit 100.

[0149] 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 moving unit 400. The AF magnet 720 may be disposed in the AF holder 410. The AF magnet 720 may be disposed at an 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 attached to the AF holder 410 by an adhesive. The AF magnet 720 may be disposed inside 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 and the AF coil 710 may face each other. 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.

[0150] The AF magnet 720 may be disposed in the hole 311 of the OIS-x holder 310. The AF magnet 720 may overlap the OIS-x holder 310 in the y-axis direction. The AF magnet 720 may overlap the OIS-x holder 310 in the optical axis direction.

[0151] The AF magnet 720 may be a quadrupole magnet. The AF magnet 720 may include a quadrupole magnetized magnet. The AF magnet 720 may include a first magnet unit and a second magnet unit, the first magnet unit including an N pole and an S pole, and the second magnet unit including an N pole and an S pole. The first magnet unit and the second magnet unit may be arranged in a vertical direction. The first magnet unit and the second magnet unit may be arranged to be spaced apart from each other in the vertical direction, and a neutral portion may be provided between the first magnet unit and the second magnet unit.

[0152] 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 in the substrate 120. The AF sensor 730 may include a Hall element (Hall IC). The AF sensor 730 may include a Hall sensor. The AF sensor 730 may detect the AF magnet 720. The AF sensor 730 may detect the magnetic force of the AF magnet 720. The AF sensor 730 may detect the movement of the AF magnet 720. The movement amount or position of the AF magnet 720 detected by the AF sensor 730 may be used for feedback of auto focus (AF).

[0153] The AF sensor 730 may be disposed inside 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. In a modified embodiment, 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 third magnet 720.

[0154] The AF sensor 730 may include a driving IC. In this case, the driving IC may be electrically connected to the AF coil 710. The driving IC may apply current to the AF coil 710.

[0155] The lens driving device 10 may include a guide member. The guide member may include a spherical member. The guide member may include a pin. The guide member may include a cylindrical member. The guide member may guide the movement of the moving unit relative to the fixing unit 100 in a specific direction.

[0156] The lens driving device 10 may include an OIS-y guide spherical member 810. The OIS-y guide spherical member 810 may guide the movement of the OIS-y holder 210 relative to the base 110 in the y-axis direction. The OIS-y guide spherical member 810 may be disposed between the OIS-y moving unit 200 and the fixing unit 100 along the x-axis direction. The OIS-y guide spherical member 810 may be disposed between the base 110 and the OIS-y holder 210. The OIS-y guide spherical member 810 may be disposed between the base 110 and the OIS-y holder 210 along the x-axis direction. The OIS-y guide spherical member 810 may be disposed in the groove 113 of the base 110. The entire area from the lower end portion to the upper end portion of the OIS-y guide spherical member 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 sphere 810 may overlap with both the base 110 and the OIS-y holder 210 in the x-axis direction. The OIS-y guide sphere 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 sphere 810 may overlap with the OIS-y magnet 520 in the horizontal direction. At least a portion of the OIS-y guide sphere 810 may overlap with the OIS-y magnet 520 in the y-axis direction.

[0157] The OIS-y guide sphere 810 may be disposed between the groove 113 of the fixed unit 100 and the first groove 212 of the OIS-y moving unit 200. At least one of the groove 113 of the fixed unit 100 and the first groove 212 of the OIS-y moving unit 200 may extend longer than a diameter of the OIS-y guide sphere 810 in the y-axis direction.

[0158] The OIS-y guide sphere 810 may be disposed in the groove 113 of the base 110. The OIS-y guide sphere 810 may be disposed in the first groove 212 of the OIS-y holder 210. The OIS-y guide sphere 810 may include a first-first sphere contacting the base 110 and the OIS-y holder 210 at four points and a first-second sphere contacting the base 110 and the OIS-y holder 210 at three points. The OIS-y guide sphere 810 may be spherical. The OIS-y guide sphere 810 may be formed of metal. Grease may be applied to the surface of the OIS-y guide sphere 810.

[0159] The OIS-y guide sphere 810 may include a plurality of spheres. The OIS-y guide sphere 810 may include four spheres. Two OIS-y guide spheres 810 may be disposed on one side of the OIS-y magnet 520 and the remaining two OIS-y guide spheres 810 may be disposed on the other side of the OIS-y magnet 520.

[0160] The lens driving device 10 may include an OIS-x guide spherical member 820. The OIS-x guide spherical member 820 may 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 spherical member 820 may be disposed between the OIS-y holder 210 and the OIS-x holder 310. The OIS-x guide spherical member 820 may be disposed between the OIS-y holder 210 and the OIS-x holder 310 along the y-axis direction. The entire area from the lower end portion to the upper end of the OIS-x guide spherical member 820 may overlap with both the OIS-y holder 210 and the OIS-x holder 310 in the y-axis direction. The entire area of ​​the OIS-x guide spherical member 820 may overlap with 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. The OIS-x guide ball 820 may overlap the OIS-x magnet 620 in a horizontal direction when viewed from the outside of the OIS-x holder 310. At least a portion of the OIS-x guide ball 820 may overlap the OIS-x magnet 620 in the x-axis direction.

[0161] The OIS-x guide sphere 820 may be disposed between the second groove 213 of the OIS-y moving unit 200 and the first groove 312 of the OIS-x moving unit 300. At least one of the second groove 213 of the OIS-y moving unit 200 and the first groove 312 of the OIS-x moving unit 300 may extend longer than a diameter of the OIS-x guide sphere 820 in the x-axis direction.

[0162] The OIS-x guide sphere 820 may be disposed in the second groove 213 of the OIS-y holder 210. The OIS-x guide sphere 820 may be disposed in the first groove 312 of the OIS-x holder 310. The OIS-x guide sphere 820 may include a first-first sphere that contacts the OIS-y holder 210 and the OIS-x holder 310 at four points and a first-second sphere that contacts the OIS-y holder 210 and the OIS-x holder 310 at three points. The OIS-x guide sphere 820 may be spherical. The OIS-x guide sphere 820 may be formed of metal. Grease may be applied to the surface of the OIS-x guide sphere 820.

[0163] The OIS-x guide sphere 820 may include a plurality of spheres. The OIS-x guide sphere 820 may include four spheres. Two OIS-x guide spheres 820 may be disposed on one side of the OIS-x magnet 620 and the remaining two OIS-x guide spheres 820 may be disposed on the other side of the OIS-x magnet 620.

[0164] The lens driving device 10 may include an AF guide spherical member 830. The AF guide spherical member 830 may guide the movement of the AF holder 410 relative to the OIS-x holder 310 in the optical axis direction. The AF guide spherical member 830 may be disposed between the OIS-x holder 310 and the AF holder 410. The AF guide spherical member 830 may be disposed between the OIS-x holder 310 and the AF holder 410 along the x-axis direction. The AF guide spherical member 830 may be disposed between the inner side surface of the OIS-x holder 310 and the outer side surface of the AF holder 410. When viewed from the outside of the AF holder 410, the AF guide spherical member 830 may overlap with the AF magnet 720 in the horizontal direction. When viewed from the top, at least a portion of the AF guide spherical member 830 may overlap with the AF magnet 720 in the y-axis direction. At least a portion of the AF guide sphere 830 may overlap with the AF magnet 720 in the y-axis direction.

[0165] The AF guide sphere 830 may be disposed between the second groove 213 of the OIS-x moving unit 300 and the groove 411 of the AF moving unit 400. At least one of the second groove 213 of the OIS-x moving unit 300 and the groove 411 of the AF moving unit 400 may extend longer than a diameter of the AF guide sphere 830 in the optical axis direction.

[0166] The AF guide spherical member 830 may be disposed in the second groove 313 of the OIS-x holder 310. The AF guide spherical member 830 may be disposed in the groove 411 of the AF holder 410. The AF guide spherical member 830 may include a first-first spherical member contacting the OIS-x holder 310 and the AF holder 410 at four points and a first-second spherical member contacting the OIS-x holder 310 and the AF holder 410 at three points. The AF guide spherical member 830 may be spherical. The AF guide spherical member 830 may be formed of metal. Grease may be applied to the surface of the AF guide spherical member 830.

[0167] The AF guide sphere 830 may include a plurality of spheres. The AF guide sphere 830 may include six spheres. Three AF ​​guide spheres 830 may be disposed on one side of the AF magnet 720 and the remaining three AF ​​guide spheres 830 may be disposed on the other side of the AF magnet 720.

[0168] Hereinafter, a configuration of a lens driving device according to a modified embodiment is described with reference to the drawings.

[0169] Fig. 22 is a cross-sectional perspective view of a lens driving device according to a modified embodiment. Fig.23 is a perspective view illustrating a moving unit and related components of a lens driving device according to a modified embodiment. Fig.24 is a perspective view illustrating a coil, a magnet, a yoke, a spherical member, and a sensor of a lens driving device according to a modified embodiment. Fig.25 is different from Fig.23 A perspective view of a moving unit and related components of a lens driving device according to a modified embodiment is illustrated in the direction of FIG. Fig.26 is a perspective view illustrating an AF magnet, an AF yoke, an AF guide sphere, and an AF sensor of a lens driving device according to a modified embodiment.

[0170] Hereinafter, the configuration of the lens driving device 10 according to the modified embodiment is described focusing on the difference from the previous embodiment. Therefore, the technical configuration of the lens driving device 10 according to the modified embodiment which is not described below can be applied by analogy to the description in the previous embodiment.

[0171] In the lens driving device 10 according to the modified embodiment, the shapes and positions of the OIS-x yoke 920 and the AF yoke 930 may be changed compared to the previous embodiment. In addition, in the lens driving device 10 according to the modified embodiment, the OIS-x magnet 620a and the AF magnet 720a may additionally include chamfered surfaces 621 and 721 compared to the previous embodiment.

[0172] The lens driving device 10 may include an attraction member. The attraction member may be a pressure member. The attraction member may be a spherical pressure member. A magnet and an attraction force may act on the attraction member.

[0173] The lens driving device 10 may include a yoke 900. The attraction member may include the yoke 900. The yoke 900 may be formed of metal. An attraction force may be generated between the yoke 900 and the magnets 520, 620a and 720a. The spherical members 810, 820 and 830 may be pressed by the attraction force between the yoke 900 and the magnets 520, 620a and 720a.

[0174] The lens driving device 10 may include an OIS-y yoke 910. The attraction 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 fixing unit 100. An attraction force may act between the OIS-y yoke 910 and the OIS-y magnet 520. The OIS-y yoke 910 may be disposed in the substrate 120. The OIS-y yoke 910 may be disposed in the first portion of the substrate 120. The OIS-y yoke 910 may be disposed on the outer surface of the first portion of the substrate 120. The OIS-y yoke 910 may be disposed in the base 110. The OIS-y yoke 910 may be disposed in the cover 140. The OIS-y yoke 910 may be disposed at a position corresponding to the OIS-y magnet 520. An attraction force may be generated between the OIS-y yoke 910 and the OIS-y magnet 520. The OIS-y guide sphere 810 may be pressed by the attraction between the OIS-y yoke 910 and the OIS-y magnet 520. The OIS-y guide sphere 810 may be pressed between the OIS-y holder 210 and the base 110 by the attraction between the OIS-y yoke 910 and the OIS-y magnet 520.

[0175] In a modified embodiment, the OIS-y yoke 910 may be re-set with a magnet. That is, the lens driving device 10 may include an OIS-y attraction magnet. Attraction may act between the OIS-y attraction magnet and the OIS-y magnet 520.

[0176] The lens driving device 10 may include an OIS-x yoke 920. The attraction 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 in the OIS-y moving unit 200. The OIS-x yoke 920 may be disposed in the OIS-y holder 210. The OIS-x yoke 920 may be disposed on an 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 the OIS-x yoke 920.

[0177] The OIS-x yoke 920 provided in the fixed unit 100 in the present modified embodiment may be provided in the OIS-y moving unit 200 in the modified embodiment. In the modified embodiment, the attraction between the OIS-x yoke and the OIS-x magnet may not change significantly compared to the present modified embodiment. Nevertheless, there is still the advantage that the attraction between the OIS-x yoke and the OIS-x magnet does not serve as a resistance to the hand-shake correction drive in the y-axis direction. More specifically, in the present modified embodiment, the attraction between the OIS-x yoke 132 and the OIS-x magnet 620 presses the OIS-x magnet 620 toward the fixed unit 100, so the attraction can be used as a resistance to the hand-shake correction drive in the y-axis direction. However, in the modified embodiment, the attraction 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 the OIS-y holder 210 moves in the y-axis direction, so the attraction may not be used as a resistance.

[0178] The OIS-x yoke 920 may be disposed at a position corresponding to the OIS-x magnet 620a. The OIS-x yoke 920 may exert an attractive force on 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 spherical member 820 may be pressurized by the attractive force between the OIS-x yoke 920 and the OIS-x magnet 620a. The OIS-x guide spherical member 820 may be pressurized between the OIS-x retainer 310 and the OIS-y retainer 210 by the attractive force between the OIS-x yoke 920 and the OIS-x magnet 620a.

[0179] The OIS-x yoke 920 may include a first portion 921 disposed at one side of the OIS-x magnet 620a in the x-axis direction. The first portion 921 may be disposed to be longer in the optical axis direction. The first portion 921 and the second portion 922 may be disposed to be 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.

[0180] The OIS-x yoke 920 may include a second portion 922 disposed on the other side of the OIS-x magnet 620a in the x-axis direction. The second portion 922 may be disposed to be longer in the optical axis direction. The second portion 922 may be disposed to be 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.

[0181] 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 be connected to the lower end portion of the first portion 921 and the lower end portion of the second portion 922. In a modified embodiment, the third portion 923 may be omitted. In another modified embodiment, the third portion 923 of the OIS-x yoke 920 may connect the upper end portion of the first portion 921 and the upper end portion of the second portion 922.

[0182] In a modified embodiment, the OIS-x yoke 920 may be re-set with a magnet. That is, the lens driving device 10 may include an OIS-x attraction magnet. Attraction may act between the OIS-x attraction magnet and the OIS-x magnet 620a.

[0183] The OIS-x magnet 620a may include a chamfered surface 621 formed at a corner of a first portion 921 closest to the OIS-x yoke 920. The OIS-x magnet 620a may include a chamfered surface 621 formed at a corner of a second portion 922 closest to the OIS-x yoke 920. The attraction between the OIS-x magnet 620a and the OIS-x yoke 920 may be strengthened by the chamfered surface 621.

[0184] The OIS-x yoke 920 may overlap the OIS-x magnet 620a in the x-axis direction. Alternatively, in a modified embodiment, the OIS-x yoke 920 may not overlap the OIS-x magnet 620a in the x-axis direction.

[0185] The lens driving device 10 may include an AF yoke 930. The attraction member may include an AF yoke 930. The yoke 900 may include an AF yoke 930. The AF yoke 930 may be disposed in the OIS-x moving unit 300. The AF yoke 930 may be disposed in the OIS-x holder 310. The AF yoke 930 may be disposed on an 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 the AF yoke 930.

[0186] The AF yoke 930 provided in the fixed unit 100 in the present modified embodiment may be provided in the OIS-x moving unit 300 in the modified embodiment. In the modified embodiment, the attraction between the AF yoke and the AF magnet may not change significantly compared to the present modified embodiment. Nevertheless, there is still the advantage that the attraction between the AF yoke and the AF magnet does not serve as a resistance to the hand shake correction drive in the x-axis direction. More specifically, in the present modified embodiment, the attraction between the AF yoke 133 and the AF magnet 720 presses the AF magnet 720 toward the fixed unit 100, so the attraction can be used as a resistance to the hand shake correction drive in the y-axis direction. However, in the modified embodiment, the attraction between the AF yoke 930 and the AF magnet 720a presses the AF magnet 720a toward the OIS-x holder 310, but since the OIS-x holder 310 moves in the x-axis direction, the attraction may not serve as a resistance.

[0187] The AF yoke 930 may be disposed at a position corresponding to the AF magnet 720a. The AF yoke 930 may exert an attractive force on the AF magnet 720a. An attractive force may be generated between the AF yoke 930 and the AF magnet 720a. The AF guide spherical member 830 may be pressed by the attractive force between the AF yoke 930 and the AF magnet 720a. The AF guide spherical member 830 may be pressed between the OIS-x holder 310 and the AF holder 410 by the attractive force between the AF yoke 930 and the AF magnet 720a.

[0188] 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 to be longer in the optical axis direction. The first portion 931 and the second portion 932 may be disposed to be parallel to each other. The first portion 931 and the second portion 932 may be disposed to be 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 equal to the length of the AF magnet 720a in the optical axis direction.

[0189] 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 to be longer in the optical axis direction. The second portion 932 may be disposed to be 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 equal to the length of the AF magnet 720a in the optical axis direction.

[0190] 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 portion of the first portion 931 and the lower end portion of the second portion 932. In a modified embodiment, the third portion 933 may be omitted. In another modified embodiment, the third portion 933 of the AF yoke 930 may connect the upper end portion of the first portion 931 and the upper end portion of the second portion 932.

[0191] In a modified embodiment, the AF yoke 930 may be re-set with a magnet. That is, the lens driving device 10 may include an AF attraction magnet. An attraction force may be applied between the AF attraction magnet and the AF magnet 720a.

[0192] The AF magnet 720a may include a chamfered surface 721 formed at a corner of a first portion 931 closest to the AF yoke 930. The AF magnet 720a may include a chamfered surface 721 formed at a corner of a second portion 932 closest to the AF yoke 930. The attraction between the AF magnet 720a and the AF yoke 930 may be enhanced by the chamfered surface 721.

[0193] The AF yoke 930 may not overlap with the AF magnet 720a in the y-axis direction. Alternatively, in a modified embodiment, the AF yoke 930 may overlap with the AF magnet 720a in the y-axis direction.

[0194] Hereinafter, an auto focus (AF) operation of a lens driving device according to a modified embodiment is described with reference to the accompanying drawings.

[0195] Figure 27 to Figure 29 FIG. 1 is a diagram for explaining autofocus driving of the lens driving device according to the present embodiment. Fig. 27 is a cross-sectional view illustrating the appearance of the AF moving unit in an initial state in which no current is applied to the AF coil. Fig.28 is a cross-sectional view illustrating an appearance in which the AF moving unit moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.29 is a cross-sectional view illustrating an appearance in which the AF moving unit moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0196] In an initial position where no current is applied to the AF coil 710, 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. At this time, the moving unit may be the AF moving unit 400.

[0197] When a positive current is applied to the AF coil 710, the AF magnet 720 may move upward along the optical axis due to electromagnetic interaction between the AF coil 710 and the AF magnet 720 (see Fig.28 A). At this time, the AF holder 410 can move upward along the optical axis direction together with the AF magnet 720. In addition, the lens can move upward along the optical axis direction together with the AF holder 410. Therefore, the distance between the lens and the image sensor can be changed, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0198] When a reverse current is applied to the AF coil 710, the AF magnet 720 may move downward along the optical axis due to electromagnetic interaction between the AF coil 710 and the AF magnet 720 (see Fig.29 B). At this time, the AF holder 410 can move downward along the optical axis direction together with the AF magnet 720. In addition, the lens can move downward along the optical axis direction together with the AF holder 410. Therefore, the distance between the lens and the image sensor can be changed, and the focus of the image formed on the image sensor through the lens can be adjusted.

[0199] Meanwhile, during the movement process of the AF magnet 720, the AF sensor 730 may detect the strength of the magnetic field of the AF magnet 720 to detect the amount or position of the movement of the AF magnet 720. The amount or position of the movement of the AF magnet 720 detected by the AF sensor 730 may be used for auto focus feedback control.

[0200] Hereinafter, an optical image stabilization (OIS) operation of a lens driving device according to a modified embodiment is described with reference to the accompanying drawings.

[0201] Figure 30 to Figure 32It is a diagram for explaining the hand shake correction drive of the lens driving device according to the present embodiment. Fig.30 is a cross-sectional view illustrating the appearance of the moving unit in an initial state in which no current is applied to the OIS-y coil and the OIS-x coil. Fig.31 is a cross-sectional view illustrating the appearance of the OIS-x moving unit, the OIS-y moving unit, and the AF moving unit which have moved in the y-axis direction perpendicular to the optical axis when a current is applied to the OIS-y coil. Fig.32 : is a cross-sectional view illustrating the appearance of the OIS-x moving unit and the AF moving unit which have moved in the x-axis direction perpendicular to the optical axis when a current is applied to the OIS-x coil.

[0202] like Fig.30 As illustrated in FIG. 1 , the moving unit may be set at 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 unit may be the OIS-y moving unit 200 and the OIS-x moving unit 300. In addition, the moving unit may include the OIS-y moving unit 200, the OIS-x moving unit 300, and the AF moving unit 400.

[0203] When 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 Fig.31 A). At this time, the OIS-y holder 210 can move along the y-axis direction together with the OIS-y magnet 520. In addition, the OIS-x holder 310, the AF holder 410 and the lens can move along the y-axis direction together with the OIS-y holder 210. In more detail, when a forward 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 can move in one direction along the y-axis. In addition, 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 can move in another direction along the x-axis.

[0204] When current is applied to the OIS-x coil 610, the OIS-x magnet 620 may move in the x-axis direction perpendicular to the optical axis due to electromagnetic interaction between the OIS-x coil 610 and the OIS-x magnet 620 (see Fig.32B). At this time, the OIS-x holder 310 can move along the x-axis direction together with the OIS-x magnet 620. In addition, the AF holder 410 and the lens can move along the x-axis direction together with the OIS-x holder 310. In more detail, when a positive current is applied to the OIS-x coil 610, the OIS-x magnet 620, the OIS-x holder 310, the AF holder 410 and the lens can move in one direction along the x-axis. In addition, when a reverse current is applied to the OIS-x coil 610, the OIS-x magnet 620, the OIS-x holder 310, the AF holder 410 and the lens can move in another direction along the x-axis.

[0205] At the same time, the OIS-y sensor 530 can detect the amount or position of the movement of the OIS-y magnet 520 by detecting the strength of the magnetic field of the OIS-y magnet 520. The amount or position of the movement of the OIS-y magnet 520 detected by the OIS-y sensor 530 can be used for the y-axis direction hand shake correction feedback control. The OIS-x sensor 630 can detect the amount or position of the movement of the OIS-x magnet 620 by detecting the strength of the magnetic field of the OIS-x magnet 620. The amount or position of the movement of the OIS-x magnet 620 detected by the OIS-x sensor 630 can be used for the x-axis direction hand shake correction feedback control.

[0206] Hereinafter, a camera device according to the present modified embodiment is described with reference to the drawings.

[0207] Fig.33 It is an exploded perspective view of the camera device according to this embodiment.

[0208] The camera device 10A may include a camera module.

[0209] The camera device 10A may include a lens module 20. The lens module 20 may include at least one lens. The lens may be provided at a position corresponding to the image sensor 60. The lens module 20 may include a lens and a lens 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 threaded coupling and / or adhesive. The lens module 20 may move integrally with the AF holder 410.

[0210] The camera device 10A may include an optical filter 30. The optical filter 30 may block light of a specific frequency band from passing through the lens module 20 and being incident on the image sensor 60. The optical filter 30 may be arranged parallel to the xy plane. The optical filter 30 may be arranged between the lens module 20 and the image sensor 60. The optical filter 30 may be arranged in the sensor base 40. In a modified embodiment, the optical filter 30 may be arranged in the base 110. The optical filter 30 may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor 60.

[0211] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens driving device 10 and the printed circuit board 50. The sensor base 40 may include a protruding portion 41 in which the filter 30 is disposed. An opening may be formed in a portion of the sensor base 40 in which the filter 30 is disposed so that light passing through the filter 30 may be incident on the image sensor 60. An adhesive member may couple or attach the base 110 of the lens driving device 10 to the sensor base 40. The adhesive member may additionally be used to prevent foreign matter from entering the interior of the lens driving device 10. The adhesive member may include at least one of an epoxy resin, a thermosetting adhesive, and an ultraviolet curing adhesive.

[0212] 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 driving device 10 may be disposed in the printed circuit board 50. The sensor base 40 may be disposed between the printed circuit board 50 and the lens driving device 10. The printed circuit board 50 may be electrically connected to the lens driving device 10. The image sensor 60 may be disposed in the printed circuit board 50. Various circuits, elements, control units, etc. may be disposed in the printed circuit board 50 to convert an image formed on the image sensor 60 into an electrical signal and transmit the electrical signal to an external device.

[0213] The camera device 10A may include an image sensor 60. The image sensor 60 may be configured so that light passing through the lens and the filter 30 is incident to form an image. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. For example, the image sensor 60 may be coupled to the printed circuit board 50 by surface mounting technology (SMT). As another example, the image sensor 60 may be coupled to the printed circuit board 50 by flip chip technology. The image sensor 60 may be arranged so that its optical axis is aligned with the optical axis of the lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens may be aligned. The image sensor 60 may convert light irradiated to 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.

[0214] The camera device 10A may include a motion sensor 70. The motion sensor 70 may be mounted on the printed circuit board 50. The motion sensor 70 may be electrically connected to the control unit 80 through a circuit pattern provided in the printed circuit board 50. The motion sensor 70 may output rotation speed information due to the motion of the camera device 10A. The motion sensor 70 may include a 2-axis or 3-axis gyro sensor, or an angular velocity sensor.

[0215] The camera device 10A may include a control unit 80. The control unit 80 may be disposed in the printed circuit board 50. The control unit 80 may be electrically connected to the coil 330 of the lens driving device 10. The control unit 80 may individually control the direction, intensity, and amplitude of the current supplied to the coil 330. The control unit 80 may control the lens driving device 10 to perform an autofocus function and / or a hand shake correction function. In addition, the control unit 80 may perform autofocus feedback control and / or hand shake correction feedback control for the lens driving device 10.

[0216] 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.

[0217] Hereinafter, an optical device according to the present modified embodiment is described with reference to the drawings.

[0218] Fig.34 is a perspective view of an optical device according to the present embodiment; and Fig.35 is a perspective view of an optical device according to a modified embodiment.

[0219] The optical device 1 may include any one or more of the following: a mobile phone, a portable phone, a portable terminal, a mobile terminal, a smart phone, a smart tablet, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and a navigation device. The optical device 1 may include any device for taking an image or a photo.

[0220] 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 an image and a video 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 to the first surface. Fig.34As shown in FIG. 1 , the camera device 10A may have three cameras arranged in a vertical direction. Fig.35 As illustrated in , the camera device 10A-1 may have three cameras arranged in a horizontal direction.

[0221] Although the present modified embodiment of the present invention has been described with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical concept or essential features of the present invention. Therefore, it should be understood that the modified embodiment described above is exemplary and non-restrictive in all aspects.

Claims

1. A lens driving device, comprising: Fixed unit; a first moving unit, the first moving unit being arranged in the fixing unit; a second mobile unit, the second mobile unit being arranged in the first mobile unit; a third mobile unit, the third mobile unit being arranged in the second mobile unit; a first driving unit, wherein the first driving unit is configured to move the first moving unit along a first direction perpendicular to the optical axis direction; a second driving unit configured to move the second moving unit along a second direction perpendicular to the optical axis direction and the first direction; as well as A third driving unit is configured to move the third moving unit along 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 is configured to move together with the second moving unit.

4. The lens driving device according to claim 1, wherein: 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, a distance between the third coil and a facing surface of the third magnet is changed.

5. The lens driving device according to claim 1, comprising: A first spherical member is disposed between the first moving unit and the fixing unit along the second direction.

6. The lens driving device according to claim 5, wherein: The fixing unit comprises a groove, Wherein, the first moving unit comprises a first groove, wherein the first spherical member is disposed between the groove of the fixing unit and the first groove of the first moving unit, and At least one of the groove of the fixing unit and the first groove of the first moving unit extends in the first direction longer than a diameter of the first spherical member.

7. The lens driving device according to claim 1, wherein: The first moving unit includes a first portion disposed between the second moving unit and the fixed unit along the first direction, and Wherein, a second spherical member is arranged between the first part of the first moving unit and the second moving unit along the first direction.

8. The lens driving device according to claim 7, wherein: The first moving unit includes a second groove formed on the first portion of the first moving unit, Wherein, the second moving unit comprises a first groove, wherein the second spherical member is disposed between the second groove of the first moving unit and the first groove of the second moving unit, and At least one of the second groove of the first moving unit and the first groove of the second moving unit extends in the second direction longer than a diameter of the second spherical member.

9. The lens driving device according to claim 1, wherein: The second moving unit includes a first portion disposed between the third moving unit and the fixed unit along the second direction, and Wherein, a third spherical member is arranged between the first part of the second moving unit and the third moving unit along the second direction.

10. The lens driving device according to claim 9, wherein: The second moving unit includes a second groove formed on the first portion of the second moving unit, Wherein, the third moving unit comprises a groove, wherein the third spherical member is disposed between the second groove of the second moving unit and the groove of the third moving unit, and At least one of the second groove of the second moving unit and the groove of the third moving unit extends in the optical axis direction longer than a diameter of the third spherical member.

Images