Lens driving device, camera device, and optical device

Abstract

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

Description

Technical Field

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

[0002] A camera device is a device that takes pictures or videos of a subject, and is installed in an optical device such as a smartphone, a drone, a vehicle, etc.

[0003] An auto focus function that automatically adjusts the focus according to the distance to the subject is applied to the camera device. In addition, a hand shake correction function is applied to prevent a focus shake phenomenon caused by a user's hand shake.

[0004] The auto focus function and the hand shake correction function can be performed through the electromagnetic interaction between the magnet and the coil.

[0005] However, in a conventional lens driving device, when a magnet and a coil for performing an autofocus function are provided, a magnet that does not require electrical connection is provided in a moving part, and a coil is provided in a fixed part. In this case, there is a problem that since a magnet having a larger weight than a coil is provided in the moving part, current consumption for performing the autofocus function increases.

[0006] In particular, in recent years, the lens diameter has increased along with high-pixel image sensors, and therefore, the weight of the lens has also increased, thereby increasing the problem.

[0007] In addition, in the conventional lens driving device, since a guide structure for OIS-x-axis driving and a guide structure for OIS-y-axis driving are provided as separate layers, the height of the camera device in the optical axis direction increases.

[0008] At the same time, as the lens moves along the optical axis relative to the image sensor, the autofocus function is performed, and the movement of the lens along the optical axis can be guided by the ball. At this time, the attraction between the magnet and the yoke can be used to hold the ball between the fixed part and the moving part.

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

[0010] In addition, there is a possibility that the moving part may tilt due to the contact point of the ball.

[0011] (Patent document) KR 10-2015-0118005A. Summary of the invention

[0012] Technical Topics

[0013] A first embodiment of the present invention is directed to providing a lens driving device in which current consumption for performing an auto-focusing function is reduced by providing a coil lighter than a magnet in a moving portion.

[0014] In addition, the present invention is intended to provide a lens driving device having a minimum height in the optical axis direction by integrally forming a guide structure for OIS-x-axis driving and a guide structure for OIS-y-axis driving.

[0015] A second embodiment of the present invention is directed to a lens driving device that pressurizes a ball bearing by an elastic member.

[0016] In addition, a second embodiment of the present invention is directed to a lens driving device that pressurizes a ball by an elastic member so that when the ball is pressed by a yoke and a magnet, a centering force is not generated in the optical axis direction.

[0017] In addition, a second embodiment of the present invention is directed to a lens driving device in which rotation and tilting of a moving part are prevented by arranging a ball guide structure along a diagonal line.

[0018] Technical Solutions

[0019] According to the first embodiment of the present invention, the lens driving device may include: a base; a shell, which is placed on the base; a coil frame, which is arranged inside the shell; a first ball, which is arranged between the side surface of the shell and the base; a second ball, which is arranged between the shell and the upper side of the coil frame; a first elastic member, which is connected to a part of the upper side of the coil frame; a second elastic member, which is connected to the lower side of the shell; and a wire, which connects the first elastic member and the second elastic member.

[0020] The base may include a first guide portion for guiding the movement of the first rolling ball.

[0021] The side surface of the housing may include a second guide portion for guiding the movement of the first rolling ball.

[0022] The first guide portion and the second guide portion may include grooves.

[0023] The housing may include a first housing including an upper plate having a metal member and a second housing, the first housing including an upper plate having a metal member, the second housing being disposed on the first housing and having a protrusion for guiding the second ball.

[0024] According to the first embodiment of the present invention, the lens driving device includes: a fixed part; a first movable part, which is arranged inside the fixed part; a second movable part, which is arranged inside the first movable part; a first driving part, which is used to move the first movable part along the optical axis direction; and a second driving part, which is used to move the second movable part along a direction perpendicular to the optical axis direction, wherein the first driving part includes a first driving unit arranged in the first movable part and a second driving unit arranged in the fixed part, and wherein the second driving part may include a third driving unit arranged in the second movable part and a fourth driving unit arranged in the first movable part.

[0025] The fourth driving unit may include a coil.

[0026] The coil may move together with the first moving part.

[0027] The first driving unit may include a first magnet, and the second driving unit may include a first coil.

[0028] The second driving part may include a fifth driving unit disposed in the second moving part and spaced apart from the third driving unit, and a sixth driving unit disposed in the first moving part and spaced apart from the fourth driving unit.

[0029] When viewed from above, the first driving unit, the second driving unit, the fifth driving unit, and the sixth driving unit may overlap one another in one direction.

[0030] The third and fourth driving units move the second moving part in a first direction perpendicular to the optical axis direction, and the fifth and sixth driving units move the second moving part in a second direction perpendicular to the optical axis direction and the first direction.

[0031] The lens driving device includes: a first substrate, which is arranged in a fixed part; and a second substrate, which is arranged in a first movable part, wherein the coil is arranged in the second substrate, and wherein the first substrate may include an outer part arranged in the fixed part and a connecting part extending from the outer part and connected to the second substrate.

[0032] According to the first embodiment of the present invention, the lens driving device may include: a fixed part; a first movable part, which is arranged inside the fixed part; a second movable part, which is arranged inside the first movable part; a first supporting member, which is arranged between the fixed part and the first movable part and guides the first movable part to move along the optical axis direction; a second supporting member, which is arranged between the first movable part and the second movable part and guides the second movable part to move in a direction perpendicular to the optical axis direction; and a third supporting member, which has a side portion connected to the first movable part and another side portion connected to the second movable part.

[0033] The first moving portion may include a first elastic member, the second moving portion may include a second elastic member, and the third supporting member may be coupled to the first elastic member and the second elastic member.

[0034] The third support member may include a wire.

[0035] The lens driving device includes: a first driving part, which moves the first moving part; and a second driving part, which moves the second moving part, wherein the first driving part includes a first coil and a first magnet, wherein the second driving part includes a second coil and a second magnet, and wherein the first coil and the second coil can be arranged in the first moving part.

[0036] The first magnet is disposed in the fixed part and the second magnet may be disposed in the second moving part.

[0037] A camera device according to a first embodiment of the present invention may include: a printed circuit board; an image sensor disposed on the printed circuit board; a lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0038] An optical apparatus according to a first embodiment of the present invention may include: a main body; a camera device provided on the main body; and a display provided on the main body and outputting at least one of a video and an image captured by the camera device.

[0039] According to the second embodiment of the present invention, the lens driving device may include: a fixed part; a moving part, which is arranged inside the fixed part; a coil and a magnet, which make the moving part move along the optical axis; a ball, which is arranged between the fixed part and the moving part; a plate member, which contacts the ball; and an elastic member, which presses the plate member toward the ball.

[0040] The plate member is disposed between the ball bearing and the fixed portion, and the elastic member is disposed between the plate member and the fixed portion to urge the plate member against the fixed portion.

[0041] The fixed portion includes a column portion and an outer wall portion; and the balls may include a first ball disposed between the moving portion and the column portion of the fixed portion and a second ball disposed between the moving portion and the outer wall portion of the fixed portion.

[0042] The plate member is disposed between the first rolling ball and the column portion of the fixing portion, and the elastic member may be disposed between the plate member and the column portion of the fixing portion.

[0043] The first ball includes a plurality of first balls arranged along the optical axis direction; the plurality of first balls include a first uppermost ball which is arranged the highest and a first lowermost ball which is arranged the lowest; and the height of the point at which the elastic member presses the plate member can be set between the height of the first uppermost ball and the height of the first lowermost ball.

[0044] The second rolling balls include a plurality of second rolling balls arranged along the optical axis direction, and the plurality of second rolling balls may include a second uppermost rolling ball arranged highest and a second lowermost rolling ball arranged lowest.

[0045] The height of the point at which the elastic member presses the plate member may be lower than the height of a lower-arranged ball among the first uppermost ball and the second uppermost ball.

[0046] The height of the point at which the elastic member presses the plate member may be higher than the height of a higher-arranged ball among the first lowermost ball and the second lowermost ball.

[0047] The plurality of first balls may include a ball disposed between the first uppermost ball and the first lowermost ball and having a smaller diameter than the first uppermost ball.

[0048] The elastic member includes: a first curved portion; a second curved portion; and a third curved portion, the third curved portion being arranged between the first curved portion and the second curved portion, wherein the first curved portion and the second curved portion of the elastic member are arranged in the fixed portion, and wherein the third curved portion of the elastic member can be arranged in the plate member.

[0049] The fixing portion includes a first corner region and a second corner region disposed in a diagonal direction with respect to the optical axis, and the balls may be disposed in the first corner region and the second corner region of the fixing portion.

[0050] The movable part includes a first groove and a second groove located on the opposite side of the first groove, wherein the fixed part includes a first groove formed in the column part and a second groove formed in the outer wall part to face the first groove, wherein the elastic member is arranged in the first groove of the fixed part, wherein the first ball is arranged in the first groove of the movable part, and wherein the second ball can be arranged between the second groove of the fixed part and the second groove of the movable part.

[0051] The plate member may be disposed between the elastic member and the first rolling ball.

[0052] The lens driving device includes an inner portion and an outer portion, the inner portion is arranged on opposite sides of the first groove of the column portion of the fixing portion, and the outer portion is arranged on opposite sides of the second groove of the outer wall portion of the fixing portion. In addition, the lens driving device may include a reinforcing member including a connecting portion connecting the inner portion and the outer portion.

[0053] The lens driving device may include a cover member coupled to the moving portion and overlapping the first and second rolling balls in the optical axis direction.

[0054] The lens driving device includes a first substrate disposed in the moving part, the magnet may be disposed in the fixed part, and the coil may be disposed on the first substrate.

[0055] The lens driving device includes: an outer portion, which is arranged in a fixed portion; a connecting portion, which is connected to a first substrate; and a second substrate, which includes a connecting portion connecting the outer portion and the connecting portion, wherein at least a portion of the connecting portion of the second substrate can move together with the first substrate.

[0056] The lens driving device includes a substrate disposed in the fixed portion, a magnet is disposed in the moving portion, and a coil may be disposed on the substrate.

[0057] A camera device according to a second embodiment of the present invention may include: a printed circuit board; an image sensor disposed in the printed circuit board; a lens driving device disposed on the printed circuit board; and a lens coupled to the lens driving device.

[0058] An optical apparatus according to a second embodiment of the present invention may include: a main body; a camera device provided in the main body; and a display provided in the main body and outputting any one or more of a video and an image photographed by the camera device.

[0059] Beneficial Effects

[0060] According to the first embodiment of the present invention, since the coil lighter than the magnet is provided in the moving portion, current consumption for performing the auto-focusing function can be reduced.

[0061] In addition, since the guide structure for OIS-x-axis driving and the guide structure for OIS-y-axis driving are integrally formed, the height of the lens driving device in the optical axis direction can be minimized.

[0062] Thereby, the height of the camera device protruding from the smartphone can be minimized.

[0063] According to the second embodiment of the present invention, the ball pressing structure can be replaced by the attraction force between the yoke and the magnet.

[0064] Therefore, since the centering force in the optical axis direction generated when the ball passes through the magnet and is pressurized disappears, that is, since there is no force to return to the centering position, or even the force is very small, the current consumption in the AF drive can be reduced and the accuracy of the AF drive can be improved.

[0065] In addition, in the second embodiment of the present invention, since the ball guide structure is disposed along the diagonal line, the rotation and tilting of the moving part can be prevented.

[0066] In addition, in the second embodiment of the present invention, since the coil lighter than the magnet is provided in the moving portion, the current consumption for performing the auto-focusing function can be reduced.

[0067] Furthermore, in the modified embodiment, a lens driving device having a simplified configuration and structure can be provided compared to the second embodiment of the present invention. Thus, the manufacturing cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] Figure 1 is a conceptual diagram of a lens driving device according to a first embodiment of the present invention.

[0069] Figure 2 is a perspective view of a lens driving device according to a first embodiment of the present invention.

[0070] Figure 3 is from Figure 2 Cross-sectional view of AA observation in.

[0071] Figure 4 is from Figure 2 Cross-sectional view of BB observation in .

[0072] Figure 5 is from Figure 2 Cross-sectional view of CC observation in .

[0073] Figure 6 is from Figure 2 Cross-sectional view of DD observation in .

[0074] Figure 7 is a cross-sectional view of the lens driving device according to the first embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above.

[0075] Figure 8 1 is an exploded perspective view of a lens driving device according to a first embodiment of the present invention.

[0076] Fig. 9 It is from Figure 8 Exploded perspective views of the lens driving device according to the first embodiment of the present invention viewed from different directions.

[0077] Fig.10 is an exploded perspective view of a holder member and a pre-pressing member of an AF carrier according to a first embodiment of the present invention.

[0078] Fig.11 It is from Fig.10 Exploded perspective views of the holder member and the pre-stressing member of the AF carrier viewed from different directions.

[0079] Fig.12 (a) and Fig.12 (b) is a stereoscopic view of the OIS moving part observed from different directions.

[0080] Fig.13 This is a perspective view of a state where a cover is omitted from the lens driving device according to the first embodiment of the present invention.

[0081] Fig.14 It is from Fig.13 A perspective view showing a state in which a cover of the lens driving device is omitted, viewed from different directions.

[0082] Fig.15 1 is a perspective view illustrating a fixing portion and related components of a lens driving device according to a first embodiment of the present invention.

[0083] Fig.16 1 is a perspective view illustrating a moving portion and related components of a lens driving device according to a first embodiment of the present invention.

[0084] Fig.17 It is from Fig.16 Bottom perspective view of the moving part and related components of the lens driving device viewed from different directions.

[0085] Fig.181 is a perspective view illustrating an AF moving portion and related components of a lens driving device according to a first embodiment of the present invention.

[0086] Fig.19 It is a diagram showing the Fig.18 A perspective view of the AF moving part and related components of the lens driving device viewed from different directions.

[0087] Fig. 20 1 is a bottom view illustrating an AF moving portion and related parts of the lens driving device according to the first embodiment of the present invention.

[0088] Fig.21 1 is a perspective view illustrating an OIS moving portion and related components of a lens driving device according to a first embodiment of the present invention.

[0089] Fig. 22 1 is a plan view illustrating an OIS moving portion and related components of a lens driving device according to a first embodiment of the present invention.

[0090] Fig.23 1 is a perspective view illustrating a substrate and a coil of the lens driving device according to the first embodiment of the present invention.

[0091] Fig.24 It is a diagram showing the Fig.23 A perspective view of the substrate and coil of the lens driving device viewed from different directions.

[0092] Fig.25 1 is a perspective view illustrating a coil and a magnet of the lens driving device according to the first embodiment of the present invention.

[0093] Fig.26 FIG. 1 is a side view illustrating a coil and a substrate of the lens driving device according to the first embodiment of the present invention.

[0094] Fig. 27 is a side view illustrating an OIS moving portion pressurized by a pre-pressing member of the lens driving device according to the first embodiment of the present invention.

[0095] Fig.28 1 is a perspective view illustrating an upper elastic member, a lower elastic member, and a wire material of a lens driving device according to a first embodiment of the present invention.

[0096] Figure 29 to Figure 31 1 is a view for explaining the automatic focus driving of the lens driving device according to the first embodiment of the present invention. Fig.29 is a cross-sectional view of the moving portion in an initial state where no current is applied to the AF coil. Fig.30is a cross-sectional view illustrating a state in which the moving portion moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.31 is a cross-sectional view illustrating a moving portion that moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0097] Figure 32 to Figure 34 1 is a view for explaining the hand shake compensation driving of the lens driving device according to the first embodiment of the present invention. Fig.32 is a cross-sectional view illustrating the appearance of the OIS moving part in an initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig.33 is a cross-sectional view illustrating a state in which the OIS moving portion moves in the x-axis direction perpendicular to the optical axis when current is applied to the OIS-x coil. Fig.34 is a cross-sectional view illustrating a state in which a current is applied to the OIS-y coil so that the OIS moving portion moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0098] Fig.35 is an exploded perspective view of a camera device according to a first embodiment of the present invention.

[0099] Fig.36 is a perspective view of an optical device according to a first embodiment of the present invention.

[0100] Fig.37 is a perspective view of an optical device according to a modified embodiment.

[0101] Fig.38 is a perspective view of a lens driving device according to a second embodiment of the present invention.

[0102] Fig.39 is from Fig.38 Cross-section view seen through AA.

[0103] Fig.40 is from Fig.38 Cross-sectional view as seen through BB.

[0104] Fig.41 is from Fig.38 Cross-sectional view as seen through CC.

[0105] Fig.42 is from Fig.38 Cross-sectional view as seen in DD.

[0106] Fig.43 FIG. 1 is an exploded perspective view of a lens driving device according to a second embodiment of the present invention.

[0107] Fig.44 Observed from the other direction Fig.43Exploded three-dimensional diagram.

[0108] Fig.45 This is a perspective view of a state where a cover is omitted from the lens driving device according to the second embodiment of the present invention.

[0109] Fig.46 Observed from the other direction Fig.45 Stereoscopic diagram.

[0110] Fig.47 2 is a perspective view illustrating a fixing portion and related components of a lens driving device according to a second embodiment of the present invention.

[0111] Fig.48 Observed from the other direction Fig.47 Stereoscopic diagram.

[0112] Fig.49 2 is a perspective view illustrating a moving portion and related components of a lens driving device according to a second embodiment of the present invention.

[0113] Fig.50 Observed from the other direction Fig.49 Stereoscopic diagram.

[0114] Fig.51 is a cross-sectional perspective view illustrating a driving portion and related components of a lens driving device according to a second embodiment of the present invention.

[0115] Fig.52 It is a plan view of a state in which a cover is omitted from the lens driving device according to the second embodiment of the present invention.

[0116] Fig.53 is in a state in which the cover is omitted Fig.52 An enlarged plan view of a portion of the.

[0117] Fig.54 2 is a cross-sectional perspective view illustrating a ball bearing and related components of a lens driving device according to a second embodiment of the present invention.

[0118] Fig.55 2 is a perspective view illustrating a ball bearing and related components of a lens driving device according to a second embodiment of the present invention.

[0119] Fig.56 1 is a perspective view illustrating a ball receiving structure of a base of a lens driving device according to a second embodiment of the present invention.

[0120] Fig.57 It is illustrated in Fig.56 A three-dimensional diagram showing a state in which a ball, a plate member, an elastic member and a reinforcing member are arranged.

[0121] Fig.58 Observed from the other direction Fig.57 Stereoscopic diagram.

[0122] Fig.59 2 is a perspective view illustrating a moving portion and a ball bearing of a lens driving device according to a second embodiment of the present invention.

[0123] Fig.60 Observed from the other direction Fig.59 Stereoscopic diagram.

[0124] Fig.61 (a) is a view comparing the heights of the ball and the pressure point in a state where the moving part moves upward, and Fig.61 (b) is a diagram comparing the heights of the ball and the pressure point when the moving part moves downward.

[0125] Fig.62 is a perspective view of a lens driving device according to a modified embodiment.

[0126] Fig.63 is from Fig.62 Cross-section view seen through AA.

[0127] Fig.64 is from Fig.62 Cross-sectional view as seen through BB.

[0128] Fig.65 is an exploded perspective view of a lens driving device according to a modified embodiment.

[0129] Fig.66 Observed from the other direction Fig.65 Exploded three-dimensional diagram.

[0130] Fig.67 are a plan view and a partially enlarged view of a state in which a cover is omitted from a lens driving device according to a modified embodiment.

[0131] Figures 68 to 70 1 is a view for explaining the automatic focus driving of the lens driving device according to the second embodiment of the present invention. Fig.68 is a cross-sectional view of the moving portion in an initial state where no current is applied to the AF coil. Fig.69 is a cross-sectional view illustrating a state in which the moving portion moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.70 is a cross-sectional view illustrating a moving portion that moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0132] Figure 71 to Figure 73FIG. 2 is a diagram for explaining the automatic focus driving of the lens driving device according to the second embodiment of the present invention. Fig.71 is a cross-sectional view illustrating a state of a moving portion in an initial state in which no current is applied to the AF coil. Fig.72 is a cross-sectional view illustrating a state in which the moving portion moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.73 is a cross-sectional view illustrating a moving portion that moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0133] Fig.74 is an exploded perspective view of a camera device according to a second embodiment of the present invention.

[0134] Fig.75 is a perspective view of an optical device according to a second embodiment of the present invention.

[0135] Fig.76 is a perspective view of an optical device according to a modified embodiment. DETAILED DESCRIPTION

[0136] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0137] 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 embodiments.

[0138] 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.

[0139] In addition, the terms used in this specification are for describing the embodiments and are not intended to limit the present invention.

[0140] 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.

[0141] In addition, when describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (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.

[0142] 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.

[0143] In addition, when described as being formed or arranged “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 arranged 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.

[0144] The "optical axis" used below (see Fig.29 The “OA) direction” is defined as the optical axis direction of the lens and / or image sensor connected to the lens driving device.

[0145] The "vertical direction" used below may be a direction parallel to or the same as the optical axis direction. The vertical direction may correspond to the "z-axis direction". The "horizontal direction" used below may be a direction perpendicular to the vertical direction. That is, the horizontal direction may be a direction perpendicular to the optical axis. Therefore, the horizontal direction may include the "x-axis direction" and the "y-axis direction".

[0146] The "auto focus (AF) function" used below is defined as a function that adjusts the distance to the image sensor by moving the lens in the optical axis direction according to the distance to the object so that a clear image of the object can be obtained on the image sensor, thereby automatically focusing on the object. In addition, "closed loop auto focus (CLAF) control" is defined as a function that performs real-time feedback control of the position of the lens by detecting the distance between the image sensor and the lens to improve the accuracy of focus control.

[0147] The "optical image stabilization (OIS) function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to offset hand shaking so as to prevent the image or video from shaking due to the user's hand shaking. In addition, "closed loop auto focus (CLAF) control" is defined as real-time feedback control of the lens position by detecting the position of the lens relative to the image sensor to improve the accuracy of image stabilization.

[0148] Hereinafter, either one of the “AF moving part 200 ” and the “OIS moving part 300 ” may be referred to as a “first moving part”, and the other may be referred to as a “second moving part”.

[0149] Hereinafter, either one of the “AF driving section” and the “OIS driving section” may be referred to as a “first driving section”, and the other may be referred to as a “second driving section”.

[0150] Hereinafter, any one of the “AF driving part”, “OIS-x driving part” and “OIS-y driving part” is referred to as a “first driving part”, another one may be referred to as a “second driving part”, and the remaining one may be referred to as a “third driving part”.

[0151] Hereinafter, one of the “AF magnet”, “OIS-x magnet”, and “OIS-y magnet” is referred to as a “first magnet”, another is referred to as a “second magnet”, and the remaining one may be referred to as a “third magnet”.

[0152] Hereinafter, one of the “AF coil 420 ,” the “OIS-x coil 520 ,” and the “OIS-y coil 620 ” is referred to as a “first coil,” another is referred to as a “second coil,” and the remaining one may be referred to as a “third coil.”

[0153] Hereinafter, one of the “AF magnet 410”, “OIS-x magnet 510”, “OIS-y magnet 610”, “AF coil 420”, “OIS-x coil 520” and “OIS-y coil 620” is referred to as the “first driving unit”, another is referred to as the “second driving unit”, another is referred to as the “third driving unit”, another is referred to as the “fourth driving unit”, another is referred to as the “fifth driving unit”, and the remaining one may be referred to as the “sixth driving unit”.

[0154] Hereinafter, either one of the “external substrate 710 ” and the “internal substrate 720 ” may be referred to as a “first substrate”, and the other may be referred to as a “second substrate”.

[0155] Hereinafter, either one of the “AF guide ball 810 ” and the “OIS guide ball 820 ” may be referred to as a “first ball”, and the other may be referred to as a “second ball”.

[0156] Hereinafter, either one of the “holder member 220” and the “pre-pressurizing member 230” is referred to as the “first member”, and the other may be referred to as the “second member”. In addition, hereafter, either one of the “holder member 220” and the “pre-pressurizing member 230” may be referred to as the “first housing”, and the other may be referred to as the “second housing”.

[0157] Hereinafter, any one of the “upper elastic member 830 ” and the “lower elastic member 840 ” is referred to as a “first elastic member”, and the other may be referred to as a “second elastic member”.

[0158] Hereinafter, one of the “upper elastic member 830 ,” the “lower elastic member 840 ,” and the “wire 850 ” is referred to as a “first supporting member,” another is referred to as a “second supporting member,” and the remaining one is referred to as a “third supporting member.”

[0159] Hereinafter, one of the “AF sensor 430 ,” the “OIS-x sensor 530 ,” and the “OIS-y sensor 630 ” is referred to as a “first sensor,” another is referred to as a “second sensor,” and the remaining one may be referred to as a “third sensor.”

[0160] Hereinafter, one of the “AF yoke 440 ”, the “OIS-x yoke 540 ” and the “OIS-y yoke 640 ” is referred to as a “first yoke”, another is referred to as a “second yoke”, and the remaining one may be referred to as a “third yoke”.

[0161] Hereinafter, one of the “inner groove 1111 - 1 ” and the “outer groove 1112 - 1 ” is referred to as a “first groove”, and the other may be referred to as a “second groove”.

[0162] Hereinafter, one of the “inner groove 1211 ” and the “outer groove 1212 ” is referred to as a “first groove”, and the other may be referred to as a “second groove”.

[0163] Hereinafter, one of the “inner ball 1410 ” and the “outer ball 1420 ” is referred to as a “first ball”, and the other may be referred to as a “second ball”.

[0164] Hereinafter, one of the "uppermost inner ball 1411" and the "uppermost outer ball 1421" is referred to as the "first uppermost ball", and the other may be referred to as the "second uppermost ball".

[0165] Hereinafter, one of the "lowermost inner ball 1412" and the "lowermost outer ball 1422" is referred to as the "first lowermost ball", and the other may be referred to as the "second lowermost ball".

[0166] Hereinafter, one of the “upper curved portion 1521 ,” the “lower curved portion 1522 ,” and the “connecting curved portion 1523 ” is referred to as a “first curved portion,” another is referred to as a “second curved portion,” and the remaining one may be referred to as a “third curved portion.”

[0167] Hereinafter, either one of the “inner substrate 1610 ” and the “outer substrate 1620 ” may be referred to as a “first substrate”, and the other may be referred to as a “second substrate”.

[0168] Hereinafter, a configuration of a lens driving device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

[0169] Figure 1 is a conceptual diagram of a lens driving device according to a first embodiment of the present invention; Figure 2 is a perspective view of a lens driving device according to a first embodiment of the present invention; Figure 3 is from Figure 2 Cross-sectional view of AA observation in; Figure 4 is from Figure 2 Cross-sectional view of BB observation in ; Figure 5 is from Figure 2 Cross-sectional view of CC observation in; Figure 6 is from Figure 2 Cross-sectional view of DD observation in;

[0170] Figure 7 is a cross-sectional view of a lens driving device according to a first embodiment of the present invention, cut in a direction perpendicular to the optical axis and viewed from above; Figure 8 is an exploded perspective view of a lens driving device according to a first embodiment of the present invention; Fig. 9 It is from Figure 8 An exploded perspective view of the lens driving device according to the first embodiment of the present invention viewed from different directions; Fig.10 is an exploded perspective view of a holder member and a pre-pressing member of an AF carrier according to a first embodiment of the present invention; Fig.11 It is from Fig.10 An exploded perspective view of a retainer member and a pre-stressing member of an AF carrier viewed from different directions; Fig.12 (a) and Fig.12 (b) is a stereoscopic image of the OIS moving part observed from different directions; Fig.13 is a perspective view of a state where a cover is omitted from the lens driving device according to the first embodiment of the present invention; Fig.14 It is from Fig.13 A perspective view of a state in which a cover of the lens driving device is omitted, viewed from different directions; Fig.15 is a perspective view illustrating a fixing portion and related components of a lens driving device according to a first embodiment of the present invention; Fig.16 is a perspective view illustrating a moving portion and related components of a lens driving device according to a first embodiment of the present invention; Fig.17 It is from Fig.16 Bottom-view stereograms of the moving parts and related components of the lens driving device viewed from different directions; Fig.18 is a perspective view illustrating an AF moving portion and related components of a lens driving device according to a first embodiment of the present invention; Fig.19 It is a diagram showing the Fig.18 A perspective view of the AF moving part and related components of the lens driving device viewed from different directions; Fig. 20 is a bottom view illustrating an AF moving portion and related components of a lens driving device according to a first embodiment of the present invention; Fig.21 is a perspective view illustrating an OIS moving portion and related components of a lens driving device according to a first embodiment of the present invention; Fig. 22 is a plan view illustrating an OIS moving portion and related components of a lens driving device according to a first embodiment of the present invention; Fig.23 is a perspective view illustrating a substrate and a coil of a lens driving device according to a first embodiment of the present invention; Fig.24 It is a diagram showing the Fig.23 A three-dimensional diagram of a substrate and a coil of a lens driving device viewed from different directions; Fig.25 is a perspective view illustrating a coil and a magnet of a lens driving device according to a first embodiment of the present invention; Fig.26 is a side view illustrating a coil and a substrate of a lens driving device according to a first embodiment of the present invention; Fig. 27 is a side view illustrating an OIS moving portion pressurized by a pre-pressing member of the lens driving device according to the first embodiment of the present invention; and Fig.28 1 is a perspective view illustrating an upper elastic member, a lower elastic member, and a wire material of a lens driving device according to a first embodiment of the present invention.

[0171] 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.

[0172] The lens driving device 10 may include a fixed portion 100. The fixed portion 100 may be a portion that is relatively fixed when the moving portion moves. The moving portion may move relative to the fixed portion 100.

[0173] The lens driving device 10 may include a base 110. The fixing portion 100 may include the base 110. The base 110 may be disposed below the AF carrier 210. The base 110 may be disposed below the OIS carrier 300. The base 110 may be coupled to the cover 120. The AF carrier 210 and the OIS carrier 300 may be disposed on the base 110. The AF carrier 210 and the OIS carrier 300 may be disposed on a lower plate portion 111 of the base 110. The AF carrier 210 and the OIS carrier 300 may be disposed inside the base 110. The AF carrier 210 and the OIS carrier 300 may be disposed within a side wall portion 112 of the base 110.

[0174] The base 110 may include a lower plate portion 111. The base 110 may include a side wall portion 112. The side wall portion 112 may be a "side portion". The side wall portion 112 may be a "side plate". The side wall portion 112 may be a "side wall". The side wall portion 112 of the base 110 may extend from the upper surface of the lower plate portion 111.

[0175] The side wall portion 112 of the base 110 may include a plurality of side walls. The side wall portion 112 of the base 110 may include four side walls. The side wall portion 112 of the base 110 may include a first side wall to a fourth side wall. The side wall portion 112 of the base 110 may include a first side wall and a second side wall disposed opposite to each other and a third side wall and a fourth side wall disposed opposite to each other. At this time, the AF magnet 410 may be disposed on a first side plate of the base 110. The OIS-x magnet 510 may be disposed at a position corresponding to the third side plate of the base 110. The OIS-y magnet 610 may be disposed at a position corresponding to the second side plate of the base 110.

[0176] The base 110 may include a groove 113. The groove 113 may be an "AF guide ball accommodating groove". The AF guide ball 810 may be disposed in the groove 113. The groove 113 may directly contact the AF guide ball 810. The groove 113 may be disposed along the optical axis direction. The groove 113 may include a plurality of grooves. The groove 113 may include two grooves. The two grooves may be disposed parallel to each other. The groove 113 may include a first groove that contacts the AF guide ball 810 at two points and a second groove that contacts the AF guide ball 810 at one point. As a modified embodiment, both the first groove and the second groove may contact the AF guide ball 810 at two points. The base 110 may include a first guide portion for guiding the movement of the AF guide ball 810. The first guide portion may include the groove 113.

[0177] The base 110 may include a protruding portion 114. The protruding portion 114 may protrude to the outer side. The connecting portion 712 of the outer substrate 710 may be provided on the upper and lower sides of the protruding portion 114. A groove may be formed in the protruding portion 114 so as not to interfere even when the connecting portion 712 of the outer substrate 710 moves.

[0178] The base 110 may include a step portion. The step portion may be formed at a lower end portion of an outer side surface of the base 110. The step portion may protrude from the outer side surface of the base 110. The side plate 122 of the cover 120 may be disposed in the step portion of the base 110.

[0179] The lens driving device 10 may include a cover 120. The fixing portion 100 may include the cover 120. The cover 120 may be disposed on the base 110. The cover 120 may be disposed on the base 110. The cover 120 may be coupled to the base 110. The cover 120 may be fixed to the base 110. The cover 120 may accommodate the AF carrier 210 therein. The cover 120 may accommodate the OIS carrier 300 therein. The cover 120 may be a shielding member. The cover 120 may be a shielding can.

[0180] The cover 120 may include an upper plate 121. The upper plate 121 may be disposed on the moving part. The upward movement of the moving part may be restricted by contact of the moving part with the upper plate 121. The upper plate 121 may include a hole through which light passes.

[0181] The cover 120 may include a side panel 122. The side panel 122 may extend from the upper panel 121. The side panel 122 may be disposed on the base 110. The side panel 122 may be disposed on a step portion protruding from a lower end portion of an outer side surface of the base 110. The side panel 122 may include a plurality of side panels. The side panel 122 may include four side panels. The side panel 122 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.

[0182] The lens driving device 10 may include a moving part. The moving part may be arranged in the fixed part 100. The moving part may be arranged inside the fixed part 100. The moving part may be arranged on the fixed part 100. The moving part may be arranged in the fixed part 100 in a movably manner. The moving part may be moved by the driving part based on the fixed part 100. The moving part may move during AF driving. The moving part may move during OIS driving. The lens may be connected to the moving part.

[0183] The lens driving device 10 may include an AF moving part 200. The AF moving part 200 may be disposed in the fixed part 100. The AF moving part 200 may be disposed inside the fixed part 100. The AF moving part 200 may be disposed on the fixed part 100. The AF moving part 200 may be disposed between the fixed part 100 and the OIS moving part 300. The AF moving part 200 may be movably disposed in the fixed part 100. The AF moving part 200 may be moved relative to the fixed part 100 in the optical axis direction by the AF driving part 400. The AF moving part 200 may move during AF driving.

[0184] The lens driving device 10 may include an AF carrier 210. The AF moving part 200 may include the AF carrier 210. The AF carrier 210 may be an "AF holder". The AF carrier 210 may be a "housing". The AF carrier 210 may be disposed inside the base 110. The AF carrier 210 may be disposed on the base 110. The AF carrier 210 may be disposed inside the cover 120. The AF carrier 210 may be disposed between the base 110 and the OIS carrier 300. The AF carrier 210 may be disposed in a movably manner in the optical axis direction.

[0185] The AF carrier 210 may include a frame, a first upper plate, and a second upper plate. In this case, the frame may be a body component. The frame may be a retainer member 220. The first upper plate may be a metal member 225. The second upper plate may be a pre-stressing member 230. The AF carrier 210 may be a housing. The housing may include a first housing and a second housing. In this case, the first housing may include a retainer member 220, and the second housing may include a pre-stressing member 230. The OIS carrier 300 may be a coil frame. The OIS guide ball 820 may be disposed between the housing and the coil frame. The AF guide ball 810 may be disposed between a side surface of the housing and the cover 120. The AF guide ball 810 may be disposed between a side surface of the housing and a base or a column of the base.

[0186] The lens driving device 10 may include a holder member 220. The AF carrier 210 may include the holder member 220. The holder member 220 may be formed separately from the pre-pressing member 230. The lower elastic member 840 may be coupled to the holder member 220.

[0187] The AF carrier 210 may include an upper plate 221. The upper plate 221 may be disposed on the OIS carrier 300. The upper plate 221 may be disposed between the OIS carrier 300 and the upper plate 121 of the cover 120. The upper plate 221 may be disposed on the OIS moving part.

[0188] The AF carrier 210 may include a groove 222. The holder member 220 may include a groove 222. The upper plate 221 of the holder member 220 may include a groove 222. The groove 222 may be formed in the upper plate 221 of the holder member 220. The groove 222 may be open inwardly. The pre-pressing member 230 may be inserted into the groove 222. The protruding portion 231 of the pre-pressing member 230 may be inserted into the groove 222. The groove 222 may be formed as a hole. The groove 222 may be replaced by a hole. That is, as a modified embodiment, the AF carrier 210 may include a hole into which the protruding portion 231 of the pre-pressing member 230 is inserted.

[0189] The AF carrier 210 may include a side wall 223. The side wall 223 may extend downward from the upper plate 221. The inner substrate 720 may be disposed on the side wall 223. The AF coil 420 may be disposed on the side wall 223. The OIS-x coil 520 may be disposed on the side wall 223. The OIS-y coil 620 may be disposed on the side wall 223. The side wall 223 may include a groove to avoid the coil. The side wall 223 may include a plurality of side walls. The side wall 223 may include four side walls. The side wall 223 may include a first side wall and a second side wall disposed opposite to each other and a third side wall and a fourth side wall disposed opposite to each other.

[0190] The AF carrier 210 may include a groove 224. The retainer member 220 may include a groove 224. The groove 224 may be an "AF guide ball accommodating groove". The AF guide ball 810 may be disposed in the groove 224. The groove 224 may directly contact the AF guide ball 810. The groove 224 may be disposed along the optical axis direction. The groove 224 may include a plurality of grooves. The groove 224 may include two grooves. The two grooves may be disposed parallel to each other. The groove 224 may include a first groove that contacts the AF guide ball 810 at two points and a second groove that contacts the AF guide ball 810 at one point. As a modified embodiment, both the first groove and the second groove may contact the AF guide ball 810 at two points. The side surface of the AF carrier 210 may include a second guide portion for guiding the movement of the AF guide ball 810. The second guide portion may include the groove 224.

[0191] The AF carrier 210 may include a metal member 225. The holder member 220 may include the metal member 225. The metal member 225 may be insert-injected into the holder member 220. At least a portion of the metal member 225 may be disposed on an upper surface of the holder member 220. The metal member 225 may be disposed to enhance the strength of the holder member 220.

[0192] The AF carrier 210 may include a protruding portion 226. The holder member 220 may include the protruding portion 226. The protruding portion 226 may be formed on an outer side surface of the AF carrier 210. The protruding portion 226 may protrude outward from the AF carrier 210. The connecting portion 712 may be provided on an upper surface and a lower surface of the protruding portion 226.

[0193] The AF carrier 210 may include a hole 227. The hole 227 may be disposed adjacent to an upper surface of the protruding portion 226.

[0194] The lens driving device 10 may include a pre-pressing member 230. The AF carrier 210 may include a pre-pressing member 230. The pre-pressing member 230 may be coupled to an upper surface of the retainer member 220. The pre-pressing member 230 may be coupled to the retainer member 220. The pre-pressing member 230 may be inserted from above and coupled to the retainer member 220. The pre-pressing member 230 may apply pressure to the OIS guide ball 820. The pre-pressing member 230 may contact the OIS guide ball 820. The pre-pressing member 230 may directly contact the OIS guide ball 820. The pre-pressing member 230 may pressurize the OIS guide ball 820 by being coupled to the retainer member 220.

[0195] The AF carrier 210 may include a protrusion 231. The pre-stressing member 230 may include a protrusion 231. The protrusion 231 may be coupled to the groove 222 of the retainer member 220. The protrusion 231 of the pre-stressing member 230 may be inserted into the groove 222 of the retainer member 220 from above. The protrusion 231 of the pre-stressing member 230 may be disposed in the groove 222 of the retainer member 220. At least a portion of the protrusion 231 of the pre-stressing member 230 may be disposed in the groove 222 of the retainer member 220. The OIS guide ball 820 may be disposed on a lower end portion of the protrusion 231 of the pre-stressing member 230. The protrusion 231 may include a plurality of protrusions. The protrusion 231 may include four protrusions.

[0196] The AF carrier 210 may include a groove 232. The pre-pressurizing member 230 may include a groove 232. The groove 232 may be an "OIS guide ball accommodating groove". The groove 232 may be formed in the protruding portion 231. The groove 232 may be formed on the lower surface of the protruding portion 231. The groove 232 may be formed at an end portion of the protruding portion 231. The groove 232 may be concavely formed on the lower surface of the protruding portion 231. The OIS guide ball 820 may be disposed in the groove 232. The groove 232 may directly contact the plate member 825.

[0197] The lens driving device 10 may include a cover 240. The AF moving part 200 may include a cover 240. The cover 240 may be coupled to the AF carrier 210. The cover 240 may be coupled to the lower surface of the AF carrier 210. The cover 240 may be coupled to the AF carrier 210 at the lower side. The cover 240 may include a hook. The hook of the cover 240 may be coupled to the AF carrier 210. The hook of the cover 240 protrudes upward and may be coupled to the side surface of the AF carrier 210.

[0198] Hereinafter, any one of the “groove 222 ,” “groove 224 ,” and “groove 232 ” of the AF carrier 210 is referred to as a “first groove,” another is referred to as a “second groove,” and still another may be referred to as a “third groove.”

[0199] The lens driving device 10 may include an OIS moving part. The OIS moving part may be arranged in the fixed part 100. The OIS moving part may be arranged inside the fixed part 100. The OIS moving part may be arranged on the fixed part 100. The OIS moving part may be arranged inside the AF moving part 200. The OIS moving part may be arranged in a movable manner. The OIS moving part may be moved relative to the fixed part 100 and the AF moving part 200 in a direction perpendicular to the optical axis by the OIS driving part. The OIS moving part may move during OIS driving.

[0200] The lens driving device 10 may include an OIS carrier 300. The OIS moving part may include an OIS carrier 300. The OIS carrier 300 may be an "OIS holder". The OIS carrier 300 may be a "coil frame". The OIS carrier 300 may be disposed inside the AF carrier 210. The OIS carrier 300 may be disposed inside the base 110. The OIS carrier 300 may be disposed on the base 110. The OIS carrier 300 may be disposed inside the cover 120. The OIS carrier 300 may be disposed in a movably manner in a direction perpendicular to the optical axis.

[0201] The OIS carrier 300 may include an outer side surface. The OIS carrier 300 may include a plurality of side surfaces. The OIS carrier 300 may include a first side surface and a second side surface disposed opposite to each other and a third side surface and a fourth side surface disposed opposite to each other. The AF coil 420 may be disposed between the first side surface of the OIS carrier 300 and the AF magnet 410. The OIS-x magnet 510 may be disposed on the third side surface of the OIS carrier 300. The OIS-y magnet 610 may be disposed on the second side surface of the OIS carrier 300.

[0202] The OIS carrier 300 may include a groove. The groove may be an "upper elastic member anti-interference groove". The groove may be formed on the upper surface of the OIS carrier 300. The groove may be concavely formed on the upper surface of the OIS carrier 300. The groove may be provided at a position corresponding to the upper elastic member 830 to prevent interference between the OIS carrier 300 and the upper elastic member 830.

[0203] The OIS carrier 300 may include a groove 310. The groove 310 may be an "OIS guide ball accommodating groove". The OIS guide ball 820 may be disposed in the groove 310. The groove 310 may directly contact the OIS guide ball 820. The groove 310 may be disposed in a direction perpendicular to the optical axis. The groove 310 may be recessed in the optical axis direction. The groove 310 may include a plurality of grooves. The groove 310 may include four grooves. The groove 310 may contact the OIS guide ball 820 at one point. Alternatively, the groove 310 may contact the OIS guide ball 820 at two points. The number of contact points between the OIS carrier 300 and the OIS guide ball 820 may vary due to the movement of the OIS guide ball 820. The groove 310 may be formed on the upper surface of the OIS carrier 300. The groove 310 may be open upward.

[0204] The OIS carrier 300 may include a lateral stopper. The lateral stopper may limit the travel of the OIS carrier 300 in the lateral direction. That is, when the OIS carrier 300 moves to the maximum, the lateral stopper of the OIS carrier 300 may contact one or more of the AF carrier 210 and the base 110. The lateral stopper may be formed on the outer side surface of the OIS carrier 300. The lateral stopper may protrude outward from the side surface of the OIS carrier 300.

[0205] The OIS carrier 300 may include a protrusion 320. The protrusion 320 may be coupled with the upper elastic member 830. The protrusion 320 may be a "coupling protrusion". The upper elastic member 830 may include a hole into which the protrusion 320 of the OIS carrier 300 is inserted. The protrusion 320 may be formed on the upper surface of the OIS carrier 300.

[0206] The OIS carrier 300 may include a groove 330. The groove 313 may be a “lens adhesive accommodating groove”. The groove 330 may be formed on the inner circumferential surface of the OIS carrier 300. The groove 330 may be concavely formed on the inner circumferential surface of the OIS carrier 300. The adhesive may be injected between the lens and the OIS carrier 300 through the groove 330. The adhesive for bonding the lens and the OIS carrier 300 may be disposed in the groove 330.

[0207] The OIS carrier 300 may include a groove 340. The groove 340 may be formed on a lower surface of the OIS carrier 300. The groove 340 may be opened to the outside.

[0208] The OIS carrier 300 may include a mounting portion 350. The mounting portion 350 may be a “magnet mounting member.” The magnets 510 and 620 may be disposed on the mounting portion 350. The mounting portion 350 may be formed as a groove, for example.

[0209] Hereinafter, any one of the “groove 310 ,” “groove 330 ,” and “groove 340 ” of the OIS carrier 300 is referred to as a “first groove,” and another is referred to as a “second groove,” and yet another may be referred to as a “third groove.”

[0210] The lens driving device 10 may include a driving part. The driving part may move the moving part relative to the fixed part 100. The driving part may include an AF driving part. The driving part may include an AF driving part. The driving part may include an OIS-x driving part. The driving part may include an OIS-y driving part. The driving part may include a coil and a magnet.

[0211] The lens driving device 10 may include an AF driving part. The AF driving part may move the AF moving part 200 along the optical axis direction. The AF driving part may move the AF carrier 210 along the optical axis direction. The AF driving part may move the AF carrier 210 along the optical axis direction by electromagnetic force. The AF driving part may include a coil and a magnet.

[0212] In the first embodiment of the present invention, the AF carrier 210 and the OIS carrier 300 can move in the optical axis direction by interaction between the AF coil 420 and the AF magnet 410. The AF coil 420, the AF carrier 210, and the OIS carrier 300 can move integrally in the optical axis direction.

[0213] The lens driving device 10 may include an AF magnet 410. The AF driving part 400 may include an AF magnet 410. The AF magnet 410 may be an “AF magnet”. The AF magnet 410 may be a permanent magnet. The AF magnet 410 may be disposed in the fixed part 100. The AF magnet 410 may be disposed on the base 110. The AF magnet 410 may be disposed in the cover 120. The AF magnet 410 may be disposed in the side plate 122 of the cover 120. The AF magnet 410 may be disposed on the outer side surface of the base 110. The AF magnet 410 may be disposed on the inner side surface of the base 110. The AF magnet 410 may be fixed to the base 110. The AF magnet 410 may be coupled to the base 110. The AF magnet 410 may be attached to the base 110 with an adhesive. The AF magnet 410 may be disposed inside the cover 120. The AF magnet 410 may interact with the AF coil 420. The AF magnet 410 may electromagnetically interact with the AF coil 420. The AF magnet 410 may be disposed at a position corresponding to the AF coil 420. The AF magnet 410 and the AF coil 420 may face each other. The AF magnet 410 may face the AF coil 420. The AF magnet 410 may overlap with the AF coil 420 in a direction perpendicular to the optical axis.

[0214] The AF magnet 410 may be a 4-pole magnet. The AF magnet 410 may include a 4-pole magnetized magnet. The AF magnet 410 may include a first magnet portion and a second magnet portion, the first magnet portion including an N pole and an S pole, and the second magnet portion including an N pole and an S pole. The first magnet portion and the second magnet portion may be arranged in a vertical direction. The first magnet portion and the second magnet portion are arranged to be spaced apart from each other in the vertical direction, and a neutral portion may be provided between the first magnet portion and the second magnet portion.

[0215] The lens driving device 10 may include an AF coil 420. The AF driving part 400 may include an AF coil 420. The AF coil 420 may interact with the AF magnet 410. The AF coil 420 may face the AF magnet 410. The AF coil 420 and the AF magnet 410 may face each other. The AF coil 420 may be arranged at a position corresponding to the AF magnet 410. The AF coil 420 may overlap with the AF magnet 410 in a direction perpendicular to the optical axis. The AF coil 420 may be arranged on the inner substrate 720. The AF coil 420 may be arranged in the AF carrier 210. The AF coil 420 may be arranged in the AF moving part 200.

[0216] In the first embodiment of the present invention, the AF coil 420 can move in the optical axis direction. The AF coil 420 can move in the optical axis direction by interacting with the AF magnet 410. The AF coil 420 can move together with the AF moving part 200. The AF coil 420 can move in the optical axis direction together with the AF moving part 200. During the AF driving process, the AF coil 420 can move in the optical axis direction together with the AF moving part 200. The AF coil 420 can be set in the AF moving part 200. The AF coil 420 can be fixed to the AF moving part 200. The AF coil 420 can be connected to the AF moving part 200.

[0217] The lens driving device 10 may include an AF sensor 430. The AF driving part 400 may include the AF sensor 430. The AF sensor 430 may be a Hall sensor. The AF sensor 430 may be disposed in the inner substrate 720. The AF sensor 430 may detect the AF magnet 410. The AF sensor 430 may detect the movement of the AF magnet 410. The movement amount or position of the AF magnet 410 detected by the AF sensor 430 may be used for feedback of automatic focusing drive.

[0218] The AF sensor 430 may be a driver IC. The driver IC may include a sensing unit. The sensing unit may include a Hall IC. The driver IC may be electrically connected to the AF coil 420. The driver IC may supply current to the AF coil 420.

[0219] The AF sensor 430 may be disposed inside the AF coil 420. The AF sensor 430 may overlap the neutral portion of the AF magnet 410 in a direction perpendicular to the optical axis. As a modified embodiment, the AF sensor 430 may be disposed outside the AF coil 420. The AF sensor 430 may overlap the AF coil 420 in the direction of the optical axis. The AF sensor 430 may overlap the AF coil 420 in a direction perpendicular to the optical axis.

[0220] The lens driving device 10 may include an AF yoke 440. The AF yoke 440 may be disposed at a position corresponding to the AF magnet 410. An attractive force may act between the AF yoke 440 and the AF magnet 410. By the attractive force between the AF yoke 440 and the AF magnet 410, the contact between the AF guide ball 810 and the base 110 and the AF carrier 210 may remain intact. The AF yoke 440 may be disposed in the inner substrate 720. The AF yoke 440 may be disposed inside the AF coil 420.

[0221] The lens driving device 10 may include an OIS driving part. The OIS driving part may move the OIS moving part 300 in a direction perpendicular to the optical axis direction. The OIS driving part may move the OIS carrier 300 in a direction perpendicular to the optical axis. The OIS driving part may move the OIS carrier 300 in a direction perpendicular to the optical axis by electromagnetic force.

[0222] The lens driving device 10 may include an OIS-x driving part. The OIS driving part may include an OIS-x driving part. The OIS-x driving part may enable the OIS carrier 300 to move along the x-axis direction perpendicular to the optical axis. The OIS-x driving part may enable the OIS carrier 300 to move along the x-axis direction perpendicular to the optical axis by electromagnetic force. The OIS-x driving part may include a coil and a magnet.

[0223] In the first embodiment of the present invention, the OIS-x magnet 510 and the OIS-x coil 520 can move the OIS moving part 300 in a first direction perpendicular to the optical axis direction. At this time, the first direction can be the x-axis direction. Due to the interaction between the OIS-x coil 520 and the OIS-x magnet 510, the OIS carrier 300 can move in the x-axis direction perpendicular to the optical axis direction. The OIS-x magnet 510 and the OIS carrier 300 can move integrally in the x-axis direction.

[0224] The lens driving device 10 may include an OIS-x magnet 510. The OIS driving part may include the OIS-x magnet 510. The OIS-x magnet 510 may be an “OIS-x magnet”. The OIS-x magnet 510 may be a permanent magnet. The OIS-x magnet 510 may be disposed in the OIS moving part. The OIS-x magnet 510 may be spaced apart from the AF magnet 410. The OIS-x magnet 510 may be disposed in the OIS carrier 300. The OIS-x magnet 510 may be disposed on the outer side surface of the OIS carrier 300. The OIS-x magnet 510 may be fixed to the OIS carrier 300. The OIS-x magnet 510 may be coupled to the OIS carrier 300. The OIS-x magnet 510 may be attached to the OIS carrier 300 with an adhesive. The OIS-x magnet 510 may be disposed within the cover 120. The OIS-x magnet 510 may interact with the OIS-x coil 520. The OIS-x magnet 510 may electromagnetically interact with the OIS-x coil 520. The OIS-x magnet 510 may be disposed at a position corresponding to the OIS-x coil 520. The OIS-x magnet 510 and the OIS-x coil 520 may face each other. The OIS-x magnet 510 may face the OIS-x coil 520. The OIS-x magnet 510 may overlap the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x magnet 510 may overlap the OIS-x coil 520 in the x-axis direction. The OIS-x magnet 510 may move in the x-axis direction perpendicular to the optical axis.

[0225] The second magnet 610 may be a two-pole magnet. The OIS-x magnet 510 may include a two-pole magnetized magnet. The OIS-x magnet 510 may include an N pole and an S pole.

[0226] The lens driving device 10 may include an OIS-x coil 520. The OIS driving part may include an OIS-x coil 520. The OIS-x coil 520 may interact with the OIS-x magnet 510. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction perpendicular to the optical axis. The OIS-x coil 520 may move the OIS-x magnet 510 in the x-axis direction by interacting with the OIS-x magnet 510. The OIS-x coil 520 may face the OIS-x magnet 510. The OIS-x coil 520 and the OIS-x magnet 510 may face each other. The OIS-x coil 520 may be disposed at a position corresponding to the OIS-x magnet 510. The OIS-x coil 520 may overlap with the OIS-x magnet 510 in a direction perpendicular to the optical axis. The OIS-x coil 520 may be disposed in the inner substrate 720. The OIS-x coil 520 may be disposed in the AF carrier 210 .

[0227] In the first embodiment of the present invention, the OIS-x coil 520 may move together with the AF moving part 200. The OIS-x coil 520 may move along the optical axis direction together with the AF moving part 200. During the AF driving process, the OIS-x coil 520 may move along the optical axis direction together with the AF moving part 200. The OIS-x coil 520 may be disposed in the AF moving part 200. The OIS-x coil 520 may be fixed to the AF moving part 200. The OIS-x coil 520 may be coupled to the AF moving part 200.

[0228] The lens driving device 10 may include an OIS-x sensor 530. The OIS driving part may include the OIS-x sensor 530. The OIS-x sensor 530 may be disposed in the inner substrate 720. The OIS-x sensor 530 may include a Hall sensor. The OIS-x sensor 530 may detect the OIS-x magnet 510. The OIS-x sensor 530 may detect the magnetic force of the OIS-x magnet 510. The OIS-x sensor 530 may be disposed above the OIS-x magnet 520. The OIS-x sensor 530 may overlap the OIS-x magnet 520 in the optical axis direction. In a modified embodiment, the OIS-x sensor 530 may be disposed inside the OIS-x coil 520. The OIS-x sensor 530 may overlap the OIS-x coil 520 in the optical axis direction. The OIS-x sensor 530 may overlap the OIS-x coil 520 in a direction perpendicular to the optical axis. The OIS-x sensor 530 may face the OIS-x magnet 510. The OIS-x sensor 530 may be provided at a position corresponding to the OIS-x magnet 510. The OIS-x sensor 530 may detect movement of the OIS-x magnet 510. The movement amount or position of the OIS-x magnet 510 detected by the OIS-x sensor 530 may be used for feedback of handshake correction driving in the x-axis direction.

[0229] The lens driving device 10 may include an OIS-x yoke 540. The OIS-x yoke 540 may be disposed in the OIS-x magnet 510. The OIS-x yoke 540 may be disposed between the OIS-x magnet 510 and the OIS carrier 300. The OIS-x yoke 540 may enhance the interaction force with the OIS-x coil 520 by preventing the magnetic flux leakage of the OIS-x magnet 510.

[0230] The lens driving device 10 may include an OIS-y driving part. The OIS driving part may include an OIS-y driving part. The OIS-y driving part may move the OIS carrier 300 along the y-axis direction perpendicular to both the optical axis and the x-axis direction. The OIS-y driving part may move the OIS carrier 300 along the y-axis direction perpendicular to both the optical axis and the x-axis direction by electromagnetic force. The OIS-y driving part may include a coil and a magnet.

[0231] In the first embodiment of the present invention, the OIS-y magnet 610 and the OIS-y coil 620 can move the OIS moving part in a second direction perpendicular to the optical axis direction and the first direction. At this time, the second direction can be the y-axis direction. Due to the interaction between the OIS-y coil 620 and the OIS-y magnet 610, the OIS carrier 300 can move in the y-axis direction perpendicular to both the optical axis direction and the x-axis direction. The OIS-y magnet 610 and the OIS carrier 300 can move integrally in the y-axis direction. The OIS-y magnet 610 can overlap with the AF magnet 410 in the second direction. The OIS-y magnet 610 can overlap with the AF magnet 410 in the y-axis direction.

[0232] The lens driving device 10 may include an OIS-y magnet 610. The OIS-y driving part may include the OIS-y magnet 610. The OIS-y magnet 610 may be an "OIS-y magnet". The OIS-y magnet 610 may be a permanent magnet. The OIS-y magnet 520 may be disposed in the OIS moving part. The OIS-y magnet 610 may be spaced apart from the OIS-x magnet 510. The OIS-y magnet 610 may be spaced apart from the AF magnet 410. The OIS-y magnet 610 may be disposed in the OIS carrier 300. The OIS-y magnet 610 may be disposed on the outer side surface of the OIS carrier 300. The OIS-y magnet 610 may be fixed to the OIS carrier 300. The OIS-y magnet 610 may be coupled to the OIS carrier 300. The OIS-y magnet 610 may be attached to the OIS carrier 300 with an adhesive. The OIS-y magnet 610 may be disposed inside the cover 120. The OIS-y magnet 610 may interact with the OIS-y coil 620. The OIS-y magnet 610 may electromagnetically interact with the OIS-y coil 620. The OIS-y magnet 610 may be disposed at a position corresponding to the OIS-y coil 620. The OIS-y magnet 610 and the OIS-y coil 620 may face each other. The OIS-y magnet 610 may face the OIS-y coil 620. The OIS-y magnet 610 may overlap the OIS-y coil 620 in a direction perpendicular to the optical axis. The OIS-y magnet 610 may overlap the OIS-y coil 620 in the y-axis direction. The OIS-y magnet 610 may move along the y-axis direction.

[0233] The OIS-y magnet 610 may be a two-pole magnet. The OIS-y magnet 610 may include a two-pole magnetized magnet. The OIS-y magnet 610 may include an N pole and an S pole.

[0234] The lens driving device 10 may include an OIS-y coil 620. The OIS-y driving portion may include an OIS-y coil 620. The OIS-y coil 620 may interact with the OIS-y magnet 610. The OIS-y coil 620 may be disposed at a side opposite to the AF coil 420 relative to the optical axis. The OIS-y coil 620 may move the OIS-y magnet 610 in a y-axis direction perpendicular to both the optical axis and the x-axis. The OIS-y coil 620 may move the OIS-y magnet 610 in the y-axis direction by interacting with the OIS-y magnet 610. The OIS-y coil 620 may face the OIS-y magnet 610. The OIS-y coil 620 and the OIS-y magnet 610 may face each other. The OIS-y coil 620 may be disposed at a position corresponding to the OIS-y magnet 610. The OIS-y coil 620 may overlap the OIS-y magnet 610 in a direction perpendicular to the optical axis. The OIS-y coil 620 may be disposed in the inner substrate 720. The OIS-y coil 620 may be disposed in the AF carrier 200.

[0235] In the first embodiment of the present invention, the OIS-y coil 620 may move together with the AF moving part 200. The OIS-y coil 620 may move along the optical axis direction together with the AF moving part 200. During the AF driving process, the OIS-y coil 620 may move along the optical axis direction together with the AF moving part 200. The OIS-y coil 620 may be disposed in the AF moving part 200. The OIS-y coil 620 may be fixed to the AF moving part 200. The OIS-y coil 620 may be coupled to the AF moving part 200.

[0236] The lens driving device 10 may include an OIS-y sensor 630. The OIS-y driving part may include the OIS-y sensor 630. The OIS-y sensor 630 may be disposed in the inner substrate 720. The OIS-y sensor 630 may include a Hall sensor. The OIS-y sensor 630 may detect the OIS-y magnet 610. The OIS-y sensor 630 may detect the magnetic force of the OIS-y magnet 610. The OIS-y sensor 630 may be disposed above the OIS-y magnet 620. The OIS-y sensor 630 may overlap the OIS-y magnet 620 in the optical axis direction. The OIS-y sensor 630 may overlap the OIS-y magnet 620 in a direction perpendicular to the optical axis. In a modified embodiment, the OIS-y sensor 630 may be disposed in the OIS-y coil 620. The OIS-y sensor 630 may overlap the OIS-y coil 620 in the optical axis direction. The OIS-y sensor 630 may face the OIS-y magnet 610. The OIS-y sensor 630 may be disposed at a position corresponding to the OIS-y magnet 610. The OIS-y sensor 630 may detect movement of the OIS-y magnet 610. The movement amount or position of the OIS-y magnet 610 detected by the OIS-y sensor 630 may be used for feedback of hand-shake correction driving in the y-axis direction.

[0237] The lens driving device 10 may include an OIS-y yoke 640. The OIS-y yoke 640 may be disposed in the OIS-y magnet 610. The OIS-y yoke 640 may be disposed between the OIS-y magnet 610 and the OIS carrier 300. The OIS-y yoke 640 may prevent magnetic flux leakage of the OIS-y magnet 610 to enhance the interaction force with the OIS-y coil 620.

[0238] When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be sequentially arranged on an imaginary straight line. When viewed from the upper surface, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be sequentially arranged on an imaginary straight line. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be arranged in sequence. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may be sequentially arranged in the y-axis direction. When viewed from above, the AF magnet 410, the AF coil 420, the OIS-y magnet 610, and the OIS-y coil 620 may overlap in the y-axis direction.

[0239] The lens driving device 10 may include substrates 710 and 720. The substrates 710 and 720 may include flexible printed circuit boards (FPCBs). The substrates 710 and 720 may be electrically connected to the coils 420, 520, and 620. The substrates 710 and 720 may be electrically connected to the sensors 430, 530, and 630.

[0240] The lens driving device 10 may include an external substrate 710. The external substrate 710 may be disposed on the base 110. The external substrate 710 may be electrically connected to the coils 420, 520, and 620. The external substrate 710 may be electrically connected to the sensors 430, 530, and 630. The external substrate 710 may connect the AF carrier 210 and the base 110. The external substrate 710 may elastically connect the AF carrier 210 and the base 110. The external substrate 710 may connect the fixed portion 100 and the inner substrate 720. The external substrate 710 may support the AF carrier 210 against the base 110 in a movably manner. The external substrate 710 may guide the AF carrier 210 to move relative to the base 110 in the optical axis direction. The external substrate 710 may include a flexible substrate. The external substrate 710 may include a flexible printed circuit board (FPCB). The external substrate 710 may include an elastic portion. The external substrate 710 may include an elastic member. The outer substrate 710 may include an outer side portion 711 disposed in the fixing portion 100 and a connection portion 712 extending from the outer side portion 711 and coupled to the inner substrate 720 .

[0241] The outer substrate 710 may include an outer portion 711. The outer portion 711 may be disposed on the base 110. The outer portion 711 may be formed to surround the side surface of the base 110. The outer portion 711 may be disposed on three side surfaces of the base 110. The outer portion 711 may include two terminal units. The two terminal units may be disposed opposite to each other with respect to the optical axis. The terminal unit may include a terminal 712-1.

[0242] The outer substrate 710 may include a terminal 711-1. The outer side portion 711 of the outer substrate 710 may include a terminal 711-1. The terminal 711-1 may be electrically connected to the terminal 712-1. The terminal 711-1 may be provided in a lower end portion of the base 110. The terminal 711-1 may be coupled to the printed circuit board 50. The terminal 711-1 may be coupled to the terminal of the printed circuit board 50 by welding. The terminal 711-1 may be coupled to the terminal of the printed circuit board 50 by a conductive member. The terminal 711-1 may be connected to the terminal of the printed circuit board 50. The terminal 711-1 may be electrically connected to the terminal of the printed circuit board 50.

[0243] The outer substrate 710 may include a connecting portion 712. The connecting portion 712 may be an "extension portion". The connecting portion 712 may be a "leg portion". The connecting portion 712 may extend from the outer side portion 711. At least a portion of the connecting portion 712 may move together with the AF carrier 210. The extension portion may extend from the outer side portion 711. At least a portion of the extension portion may move together with the AF carrier 210. At least a portion of the connecting portion 712 may be arranged perpendicular to the optical axis direction. The connecting portion 712 of the outer substrate 710 may be coupled to the inner substrate 720 so that the inner substrate 720 may move along the optical axis direction. At least a portion of the connecting portion 712 may be arranged parallel to the optical axis direction.

[0244] The connection portion 712 may include a plurality of connection portions. The connection portion 712 may include a first connection portion and a second connection portion. The second connection portion may be disposed below the first connection portion.

[0245] The outer substrate 710 may include a terminal 712-1. The connection portion 712 of the outer substrate 710 may include a terminal 712-1. The terminal 712-1 may be connected to the terminal 721-1 of the inner substrate 720. The terminal 712-1 of the outer substrate 710 may be connected to the terminal 721-1 of the inner substrate 720 by welding. The terminal 712-1 of the outer substrate 710 may be connected to the terminal 721-1 of the inner substrate 720 by a conductive member. The terminal 712-1 of the outer substrate 710 may be connected to the terminal 721-1 of the inner substrate 720. The terminal 712-1 of the outer substrate 710 may be electrically connected to the terminal 721-1 of the inner substrate 720.

[0246] Hereinafter, either one of the “terminal 711 - 1 ′” and the “terminal 712 - 1 ” of the external substrate 710 may be referred to as a “first terminal”, and the other may be referred to as a “second terminal”.

[0247] The lens driving device 10 may include an inner substrate 720. The inner substrate 720 may be electrically connected to the coils 420, 520, and 620. The inner substrate 720 may be electrically connected to the sensors 430, 530, and 630. The inner substrate 720 may be disposed in the AF moving part 200. The inner substrate 720 may be disposed in the AF carrier 210. The inner substrate 720 may be fixed to the AF carrier 210. The inner substrate 720 may be coupled to the AF carrier 210. The inner substrate 720 may be attached to the AF carrier 210 with an adhesive. The inner substrate 720 may include a flexible substrate. The inner substrate 720 may include a flexible printed circuit board (FPCB). The inner substrate 720 may include an elastic portion. The inner substrate 720 may include an elastic member.

[0248] The inner substrate 720 may include a side plate portion 721. The side plate portion 721 may be disposed on a side surface of the AF carrier 210. The side plate portion 721 may be disposed on an outer side surface of the AF carrier 210. In another embodiment, the side plate portion 721 may be disposed on an inner surface of the AF carrier 210. The side plate portion 721 of the inner substrate 720 may include a plurality of portions. The side plate portion 721 may include a first portion to a fourth portion.

[0249] The inner substrate 720 may include a first portion. The first portion may be disposed in the AF carrier 210. The AF coil 420 may be disposed in the first portion of the inner substrate 720. The AF sensor 430 may be disposed in the first portion of the inner substrate 720. The AF yoke 440 may be disposed on the first portion of the inner substrate 720.

[0250] The inner substrate 720 may include a second portion. The second portion may be disposed at a side opposite to the first portion. The second portion may be disposed in the AF carrier 200. The second portion may be disposed on a second side surface of the AF carrier 200. The OIS-y coil 620 may be disposed in the second portion of the inner substrate 720. The OIS-y sensor 630 may be disposed in the second portion of the inner substrate 720. More specifically, the OIS-y sensor 630 may be disposed in an upper plate portion 722 that is bent and disposed above the second portion of the inner substrate 720. The OIS-y sensor 630 may be disposed on a lower surface of the upper plate portion 722.

[0251] The inner substrate 720 may include a third portion. The third portion may be disposed in the AF carrier 200. The third portion may be disposed on a third side surface of the AF carrier 200. The OIS-x coil 520 may be disposed in the third portion of the inner substrate 720. The OIS-x sensor 530 may be disposed in the third portion of the inner substrate 720. In more detail, the OIS-x sensor 530 may be disposed in an upper plate portion 722 bent from an upper side portion of the third portion of the inner substrate 720. The OIS-x sensor 530 may be disposed on a lower surface of the upper plate portion 722.

[0252] The inner substrate 720 may include a fourth portion. The fourth portion may be disposed at a side opposite to the third portion. The fourth portion may be disposed in the AF carrier 200. The fourth portion may be disposed on a fourth side surface of the AF carrier 200.

[0253] The inner substrate 720 may include a terminal 721-1. The terminal 721-1 may be disposed in a fourth portion of the inner substrate 720. The terminal 721-1 may be electrically connected to the coils 420, 520, and 620. The terminal 721-1 may be electrically connected to the sensors 430, 530, and 630.

[0254] The lens driving device 10 may include a guide member. The guide member may include a ball. The guide member may include a pin. The guide member may include a cylindrical member. The guide member may guide the movement of the moving part relative to the fixed part 100 in a specific direction.

[0255] The lens driving device 10 may include an AF guide ball 810. The AF guide ball 810 may guide the movement of the AF moving part 200 relative to the fixed part 100 in the optical axis direction. The AF guide ball 810 may guide the movement of the AF carrier 210 relative to the base 110 in the optical axis direction. The AF guide ball 810 may be disposed between the fixed part 100 and the AF moving part 200. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210. The AF guide ball 810 may be disposed between a side surface of the AF carrier 210 and the base 110. The AF guide ball 810 may be disposed between a column of the cover 120 and the base 110. The AF guide ball 810 may be disposed between the base 110 and the AF carrier 210 along the y-axis direction. The AF guide ball 810 may be disposed in a groove 113 of the base 110. The AF guide ball 810 may be disposed in the groove 224 of the AF bearing 210. The AF guide ball 810 may include a first ball that contacts the base 110 and the AF bearing 210 at four points and a second ball that contacts the base 110 and the AF bearing 210 at three points. The AF guide ball 810 may have a spherical shape. The AF guide ball 810 may be formed of metal. Grease may be applied to the surface of the AF guide ball 810.

[0256] The AF guide ball 810 may include a plurality of balls. The AF guide ball 810 may include eight balls. Four AF guide balls 810 are disposed at one side of the AF magnet 410 , and the remaining four AF guide balls 810 may be disposed at the other side of the AF magnet 410 .

[0257] The lens driving device 10 may include an OIS guide ball 820. The OIS guide ball 820 may guide the movement of the OIS carrier 300 relative to the AF carrier 210 in a direction perpendicular to the optical axis. The OIS guide ball 820 may be disposed between the AF moving part 200 and the OIS moving part. The OIS guide ball 820 may be disposed between the AF carrier 210 and the OIS carrier 300. The OIS guide ball 820 may be disposed between the AF carrier 210 and the OIS carrier 300 along the optical axis direction.

[0258] The OIS guide ball 820 may be disposed between the pre-pressing member 230 of the AF carrier 210 and the OIS carrier 300. The OIS guide ball 820 may be pressurized between the AF carrier 210 and the OIS carrier 300 by the pressurizing force of the elastic members 830, 840, and 850. The pre-pressing member 230 may pressurize the OIS guide ball 820 downward when coupled to the retainer member 220. The pre-pressing member 230 may pressurize the OIS guide ball 820 in the direction of the OIS carrier 300 when coupled to the retainer member 220. At this time, the OIS carrier 300 may pressurize the OIS guide ball 820 in the direction of the pre-pressing member 230 by the restoring force of the elastic members 830, 840, and 850. Therefore, the OIS guide ball 820 may be pressurized between the pre-pressing member 230 and the OIS carrier 300.

[0259] The OIS guide ball 820 can guide the movement of the OIS moving part 300 in the x-axis direction and the y-axis direction. The OIS guide ball 820 can guide the OIS carrier 300 to move in the x-axis direction and the y-axis direction perpendicular to the optical axis direction relative to the AF carrier 210. That is, the OIS guide ball 820 can guide the OIS carrier 300 to move in the x-axis direction and the y-axis direction. In other words, the OIS guide ball 820 can guide the movement in both the x-axis direction and the y-axis direction. For reference, compared with a comparative example in which a ball for guiding the x-axis direction and a ball for guiding the y-axis direction are separately provided, in the first embodiment of the present invention in which a structure for guiding the x-axis direction and a structure for guiding the y-axis direction are integrally provided, the size of the lens driving device 10 can be minimized. In particular, the height of the lens driving device 10 in the optical axis direction can be reduced. Thus, the height protruding from the smartphone, i.e., the shoulder height, can be minimized. The OIS guide ball 820 may include a plurality of guide members. The OIS guide ball 820 may include four guide members.

[0260] As a modified embodiment, the OIS guide balls 820 may include guide balls for guiding driving in the x-axis direction and guide balls for guiding driving in the y-axis direction, respectively.

[0261] The lens driving device 10 may include an elastic member. The elastic member may be formed to pressurize the OIS guide ball 820. The elastic member may be formed to guide both the OIS-x axis drive and the OIS-y axis drive only through the OIS guide ball 820. The elastic member may include a leaf spring. The elastic member may include a wire. The elastic member may have elasticity. The elastic member may be formed of metal.

[0262] The first supporting member may be disposed between the fixed portion 100 and the AF moving portion 200. The first supporting member may guide the AF moving portion 200 to move along the optical axis direction. The second supporting member may be disposed between the AF moving portion 200 and the OIS moving portion 300. The second supporting member may guide the OIS moving portion 300 to move in a direction perpendicular to the optical axis direction. One side portion of the third supporting member may be coupled to the AF moving portion 200, and the other side portion may be coupled to the OIS moving portion 300.

[0263] The AF moving part 200 may include a first elastic member. The OIS moving part 300 may include a second elastic member. The third supporting member may couple the first elastic member and the second elastic member. The third supporting member may include a wire 850.

[0264] The lens driving device 10 may include an upper elastic member 830. The upper elastic member 830 may be an "upper spring". The upper elastic member 830 may be a leaf spring. The upper elastic member 830 may have elasticity. The upper elastic member 830 may be disposed in the OIS moving part. The upper elastic member 830 may be disposed on the upper surface of the OIS moving part. The upper elastic member 830 may be disposed on the upper surface of the OIS carrier 300. The upper elastic member 830 may be disposed in the OIS carrier 300. The upper elastic member 830 may be disposed above the OIS carrier 300. The upper elastic member 830 may be disposed in the OIS carrier 300. The upper elastic member 830 may be disposed perpendicular to the optical axis.

[0265] The upper elastic member 830 may include an inner portion 831. The inner portion 831 may be coupled with the OIS moving portion.

[0266] The upper elastic member 830 may include an outer side portion 832. The outer side portion 832 may be coupled with the wire 850.

[0267] The upper elastic member 830 may include a connecting portion 833. The connecting portion 833 may connect the inner portion 831 and the outer portion 832. The connecting portion 833 may elastically connect the inner portion 831 and the outer portion 832. The connecting portion 833 may include elasticity. The connecting portion 833 may be an elastic portion.

[0268] The inner portion 831 of the upper elastic member 830 may be disposed lower than the outer portion 832. Fig.29 As shown, the inner portion 831 of the upper elastic member 830 may be disposed lower than the outer portion 832 by a first distance (see Fig.29The reason why the inner portion 831 of the upper elastic member 830 is lower than the outer portion 832 may be due to the pressing force of the pre-pressing member 230. With this structure, the OIS guide ball 820 can maintain contact with the pre-pressing member 230 of the AF carrier 210 and the OIS carrier 300.

[0269] The lens driving device 10 may include a lower elastic member 840. The lower elastic member 840 may be a "housing lower surface terminal" or a "housing lower surface plate". The lower elastic member 840 may be a leaf spring. The lower elastic member 840 may have elasticity. The lower elastic member 840 may be disposed in the AF moving part 200. The lower elastic member 840 may be disposed on the lower surface of the AF moving part 200. The lower elastic member 840 may be disposed on the lower surface of the AF carrier 210. The lower elastic member 840 may be disposed on the AF carrier 210. The lower elastic member 840 may be disposed below the AF carrier 210. The lower elastic member 840 may be disposed below the AF carrier 210. The lower elastic member 840 may be disposed perpendicular to the optical axis.

[0270] The lower elastic member 840 may include an outer side portion 841. The outer side portion 841 may be coupled with the AF moving part 200.

[0271] The lower elastic member 840 may include an inner portion 842. The inner portion 842 may be coupled to the wire 850.

[0272] The lower elastic member 840 may include a connecting portion 843. The connecting portion 843 may connect the lateral portion 841 and the medial portion 842. The connecting portion 843 may elastically connect the lateral portion 841 and the medial portion 842. The connecting portion 843 may include elasticity. The connecting portion 843 may be an elastic portion.

[0273] The lens driving device 10 may include a wire 850. The wire 850 may be a "side elastic member". The wire 850 may be a metal wire. The wire 850 may be a wire spring. The wire 850 may be a suspension wire. The wire 850 may have elasticity. The wire 850 may connect the upper elastic member 830 and the lower elastic member 840. The wire 850 may elastically connect the upper elastic member 830 and the lower elastic member 840. The wire 850 may be arranged parallel to the optical axis. The wire 850 may be arranged along the optical axis direction.

[0274] Hereinafter, auto focus (AF) driving of a lens driving device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

[0275] Figure 29 to Figure 31 1 is a view for explaining the automatic focus driving of the lens driving device according to the first embodiment of the present invention. Fig.29 is a cross-sectional view of the moving portion in an initial state where no current is applied to the AF coil. Fig.30 is a cross-sectional view illustrating a state in which the moving portion moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.31 is a cross-sectional view illustrating a moving portion that moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0276] like Fig.29 As shown, at the initial position when no current is applied to the AF coil 420, the moving part may be disposed at a position spaced apart from both the upper plate 121 of the cover 120 and the base 110. At this time, the moving part may be the AF moving part 200. In addition, the moving part may include the AF moving part 200 and the OIS moving part.

[0277] When a forward current is applied to the AF coil 420, the AF coil 420 may move upward along the optical axis direction due to electromagnetic interaction between the AF coil 420 and the AF magnet 410 (see Fig.30 A in FIG. 4 ). At this time, the AF carrier 210 can move upward along the optical axis direction together with the AF coil 420. In addition, the OIS carrier 310 and the lens can move upward along the optical axis direction together with the AF carrier 210. Therefore, the distance between the lens and the image sensor is changed, so that the focus of the image formed on the image sensor through the lens can be adjusted.

[0278] When a reverse current is applied to the AF coil 420, the AF coil 420 may move downward along the optical axis direction due to electromagnetic interaction between the AF coil 420 and the AF magnet 410 (see Fig.31 B). At this time, the AF carrier 210 can move downward along the optical axis direction together with the AF coil 420. In addition, the OIS carrier 310 and the lens can move downward along the optical axis direction together with the AF carrier 210. Therefore, the distance between the lens and the image sensor is changed, so that the focus of the image formed on the image sensor through the lens can be adjusted.

[0279] At the same time, during the movement of the AF coil 420, the AF sensor 430 moves with the AF coil 420 and detects the magnetic field strength of the AF magnet 410 to detect the amount or position of the lens in the optical axis direction. The movement amount or position of the lens in the optical axis direction detected by the AF sensor 430 can be used for automatic focusing feedback control.

[0280] Hereinafter, an optical image stabilization (OIS) operation of the lens driving device according to the first embodiment of the present invention will be described with reference to the accompanying drawings.

[0281] Figure 32 to Figure 341 is a view for explaining the hand shake compensation driving of the lens driving device according to the first embodiment of the present invention. Fig.32 is a cross-sectional view illustrating the appearance of the OIS moving part in an initial state in which no current is applied to the OIS-x coil and the OIS-y coil. Fig.33 is a cross-sectional view illustrating a state in which the OIS moving portion moves in the x-axis direction perpendicular to the optical axis when current is applied to the OIS-x coil. Fig.34 is a cross-sectional view illustrating a state in which a current is applied to the OIS-y coil so that the OIS moving portion moves in the y-axis direction perpendicular to both the optical axis and the x-axis.

[0282] like Fig.32 As shown, the moving part may be set at an initial position in a state where no current is applied to the OIS-x coil 520 and the OIS-y coil 620. At this time, the moving part may be an OIS moving part.

[0283] When current is applied to the OIS-x coil 520, the OIS-x magnet 510 may move in the x-axis direction perpendicular to the optical axis due to electromagnetic interaction between the OIS-x coil 520 and the OIS-x magnet 510 (see Fig.33 A in FIG. 1 ). At this time, the OIS carrier 300 can move along the x-axis direction together with the OIS-x magnet 510. In addition, the lens can move along the x-axis direction together with the OIS carrier 300. More specifically, when a forward current is applied to the OIS-x coil 520, the OIS-x magnet 510, the OIS carrier 300, and the lens can move in one direction on the x-axis. In addition, when a reverse current is applied to the OIS-x coil 520, the OIS-x magnet 510, the OIS carrier 300, and the lens can move in another direction on the x-axis.

[0284] When current is applied to the OIS-y coil 620, the OIS-y magnet 610 may move in the y-axis direction perpendicular to the optical axis due to electromagnetic interaction between the OIS-y coil 620 and the OIS-y magnet 610 (see Fig.34 B). At this time, the OIS carrier 300 can move along the y-axis direction together with the OIS-y magnet 610. In addition, the lens can move along the y-axis direction together with the OIS carrier 300. More specifically, when a forward current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS carrier 300 and the lens can move in one direction on the y-axis. In addition, when a reverse current is applied to the OIS-y coil 620, the OIS-y magnet 610, the OIS carrier 300 and the lens can move in another direction on the y-axis.

[0285] Meanwhile, the OIS-x sensor 530 may detect the amount or position of the OIS-x magnet 510 by detecting the magnetic field strength of the OIS-x magnet 510. The amount of movement or position detected by the OIS-x sensor 530 may be used for feedback control of hand-shake compensation in the x-axis direction. The OIS-y sensor 630 may detect the amount of movement or position of the OIS-y magnet 610 by detecting the magnetic field strength of the OIS-y magnet 610. The amount of movement or position detected by the OIS-y sensor 630 may be used for feedback control of hand-shake compensation in the y-axis direction.

[0286] Hereinafter, a camera device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

[0287] Fig.35 is an exploded perspective view of a camera device according to a first embodiment of the present invention.

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

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

[0290] The camera device 10A may include an optical filter 30. The optical filter 30 may be used to block light of a specific frequency band in the light passing through the lens module 20 from entering 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.

[0291] The camera device 10A may include a sensor base 40. The sensor base 40 may be disposed between the lens drive device 10 and the printed circuit board 50. The sensor base 40 may include a protrusion 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 drive device 10 to the sensor base 40. The adhesive member may also be used to prevent foreign matter from entering the lens drive device 10. The adhesive member may include any one or more of an epoxy resin, a thermosetting adhesive, and an ultraviolet curing adhesive.

[0292] The camera device 10A may include a printed circuit board (PCB) 50. The printed circuit board 50 may be a substrate or a circuit board. The lens driving device 10 may be disposed on 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 on the printed circuit board 50. The printed circuit board 50 may include various circuits, elements, and control units to convert an image formed by the image sensor 60 into an electrical signal and transmit the converted electrical signal to an external device.

[0293] The camera device 10A may include an image sensor 60. The image sensor 60 may be a component into which 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 using flip chip technology. The image sensor 60 may be arranged so that the optical axis coincides with 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 the light irradiated onto the effective image area of ​​the image sensor 60 into an electrical signal. The image sensor 60 may be any one of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

[0294] The camera device 10A may include a motion sensor 70. The motion sensor 70 may be mounted on the printed circuit board 50. The motion sensor 70 may be electrically connected to the control unit 80 through a circuit pattern provided on the printed circuit board 50. The motion sensor 70 may output rotational angular velocity information due to the motion of the camera module. The motion sensor 70 may include a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

[0295] The camera device 10A may include a control unit 80. The control unit 80 may be provided in the printed circuit board 50. The control unit 80 may be electrically connected to the coil 130 of the lens driving device 10. The control unit 80 may independently control the direction, intensity, and amplitude of the current supplied to the coil 130. The control unit 80 may perform an autofocus function by controlling the lens driving device 10. The control unit 80 may be electrically connected to the Hall sensor 140. The control unit 80 may detect the position of the mover 200 through the Hall sensor 140 and perform autofocus feedback control for the lens driving device 10.

[0296] The camera device 10A may include a connector 90. The connector 90 may be electrically connected to the printed circuit board 50. The connector 90 may include a port for electrical connection with an external device.

[0297] Hereinafter, an optical device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

[0298] Fig.36 is a perspective view of an optical device according to a first embodiment of the present invention; and Fig.37 is a perspective view of an optical device according to a modified embodiment.

[0299] The optical device 1 is 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. The optical device 1 may include any device for taking an image or a photo.

[0300] The optical device 1 may include a main body 20. The optical device 1 may include a camera device 10A. The camera device 10A may be provided on the main body 20. The camera device 10A may photograph a subject. The optical device 1 may include a display. The display may be provided on the main body 20. The display may output at least one of a video and an image photographed by the camera device 10A. The display may be provided on a first surface of the main body 20. The camera device 10A may be provided on at least one of the first surface of the main body 20 and a second surface opposite to the first surface. Fig.36 As shown, in the camera device 10A, three cameras can be arranged in the vertical direction. Fig.37 As shown, in the camera device 10A-1, three cameras can be arranged in the horizontal direction.

[0301] Hereinafter, components of a lens driving device according to a second embodiment of the present invention will be described with reference to the accompanying drawings.

[0302] Fig.38is a perspective view of a lens driving device according to a second embodiment of the present invention; Fig.39 is from Fig.38 The cross-section seen by AA in the figure; Fig.40 is from Fig.38 The cross-section as seen by BB in the figure; Fig.41 is from Fig.38 Cross-sectional view as seen by CC in; Fig.42 is from Fig.38 Cross-sectional view as seen by DD in; Fig.43 is an exploded perspective view of a lens driving device according to a second embodiment of the present invention; Fig.44 Observed from the other direction Fig.43 Exploded stereogram of Fig.45 is a perspective view of a state where a cover is omitted from a lens driving device according to a second embodiment of the present invention; Fig.46 Observed from the other direction Fig.45 Stereoscopic image of Fig.47 is a perspective view illustrating a fixing portion and related components of a lens driving device according to a second embodiment of the present invention; Fig.48 Observed from the other direction Fig.47 Stereoscopic image of Fig.49 is a perspective view illustrating a moving portion and related components of a lens driving device according to a second embodiment of the present invention; Fig.50 Observed from the other direction Fig.49 Stereoscopic image of Fig.51 is a cross-sectional perspective view illustrating a driving portion and related components of a lens driving device according to a second embodiment of the present invention; Fig.52 is a plan view of a state in which a cover is omitted from a lens driving device according to a second embodiment of the present invention;

[0303] Fig.53 is in a state in which the cover is omitted Fig.52 an enlarged plan view of a portion of Fig.54 is a cross-sectional perspective view illustrating a ball bearing and related components of a lens driving device according to a second embodiment of the present invention; Fig.55 is a perspective view illustrating a ball bearing and related components of a lens driving device according to a second embodiment of the present invention; Fig.56 is a perspective view illustrating a ball receiving structure of a base of a lens driving device according to a second embodiment of the present invention; Fig.57 It is illustrated in Fig.56 A three-dimensional diagram of a state in which a ball, a plate member, an elastic member and a reinforcing member are arranged; Fig.58 Observed from the other direction Fig.57 Stereoscopic image of Fig.59is a perspective view illustrating a moving portion and a ball bearing of a lens driving device according to a second embodiment of the present invention; Fig.60 Observed from the other direction Fig.59 a stereogram of Fig.61 (a) is a view comparing the heights of the ball and the pressure point in a state where the moving part moves upward, and Fig.61 (b) is a diagram comparing the heights of the ball and the pressure point when the moving part moves downward.

[0304] The lens driving device 1010 may be a voice coil motor (VCM). The lens driving device 1010 may be a lens driving motor. The lens driving device 1010 may be a lens driving actuator. The lens driving device 1010 may include an AF module. The lens driving device 1010 may include an AF actuator.

[0305] The lens driving device 1010 may include a fixed portion 1100. The fixed portion 1100 may be a relatively fixed portion when the moving portion 1200 moves. The moving portion 1200 may move relative to the fixed portion 1100.

[0306] The lens driving device 1010 may include a base 1110. The fixing portion 1100 may include the base 1110. The base 1110 may be disposed below a holder 1210. The base 1110 may be coupled to a cover 1120. The holder 1210 may be disposed on the base 1110. The holder 1210 may be disposed on a lower plate portion of the base 1110. The AF carrier 1210 may be disposed inside the base 1110. The holder 1210 may be disposed in a side wall portion 1112 of the base 1110.

[0307] The base 1110 may include a lower plate portion. The lower plate portion of the base 1110 may support a lower surface of the moving portion 1200. The lower plate portion of the base 1110 may support a lower surface of the holder 1210.

[0308] The base 1110 may include a column portion 1111. The column portion 1111 may extend from an upper surface of the lower plate portion.

[0309] The base 1110 may include an inner groove 1111-1. The column portion 1111 may include an inner groove 1111-1. The inner groove 1111-1 may be formed in the column portion 1111. The inner groove 1111-1 may be a "ball receiving groove". The inner ball 1410 may be disposed in the inner groove 1111-1. The inner groove 1111-1 may directly contact the inner ball 1410. The inner groove 1111-1 may include a plurality of grooves. The inner groove 1111-1 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed in diagonal directions relative to the optical axis.

[0310] The base 1110 may include an outer wall portion 1112. The outer wall portion 1112 may be a "side portion". The outer wall portion 1112 may be a "side plate". The outer wall portion 1112 may be a "side wall". The outer wall portion 1112 of the base 1110 may extend from the upper surface of the lower plate portion.

[0311] The base 1110 may include an outer groove 1112-1. The outer wall portion 1112 may include an outer groove 1112-1. The outer groove 1112-1 may be formed to face the inner groove 1111-1. The outer groove 1112-1 may face the inner groove 1111-1. The outer groove 1112-1 may be a "ball receiving groove". The ball 1400 may be disposed in the outer groove 1112-1. The outer ball 1420 may be disposed in the outer groove 1112-1. The outer groove 1112-1 may directly contact the ball 1400. The outer groove 1112-1 may be disposed along the optical axis direction. The outer groove 1112-1 may include a plurality of grooves. The outer groove 1112-1 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed in diagonal directions relative to the optical axis. The outer groove 1112-1 may be disposed at opposite sides of the inner groove 1111-1. The outer groove 1112-1 may have a shape corresponding to the inner groove 1111-1. The outer groove 1112-1 and the inner groove 1111-1 may be formed to have the same length in the optical axis direction.

[0312] The base 1110 may include a protruding portion. The protruding portion may protrude outward. The connecting portion 1623 of the external substrate 1620 may be disposed above the protruding portion. A groove may be formed in the protruding portion so that no interference occurs even when the connecting portion 1623 of the external substrate 1620 moves.

[0313] The base 1110 may include a step portion. The step portion may be formed on a lower end portion of an outer side surface of the base 1110. The step portion may protrude from the outer side surface of the base 1110. The side plate 1122 of the cover 1120 may be disposed in the step portion of the base 1110.

[0314] The lens driving device 1010 may include a cover 1120. The fixing portion 1100 may include the cover 1120. The cover 1120 may be disposed on the base 1110. The cover 1120 may be disposed on the base 1110. The cover 1120 may be coupled to the base 1110. The cover 1120 may be fixed to the base 1110. The cover 1120 may accommodate a holder 1210 therein. The cover 1120 may be a shielding member. The cover 1120 may be a shielding can.

[0315] The cover 1120 may include an upper plate 1121. The upper plate 1121 may be disposed on the moving part 1200. The upward movement of the moving part 1200 may be restricted by contact of the moving part 1200 with the upper plate 1121. The upper plate 1121 may include a hole through which light passes.

[0316] The cover 1120 may include a side panel 1122. The side panel 1122 may extend from the upper panel 1121. The side panel 1122 may be disposed on the base 1110. The side panel 1122 may be disposed on a step portion protruding from a lower end portion of an outer side surface of the base 1110. The side panel 1122 may include a plurality of side panels. The side panel 1122 may include four side panels. The side panel 1122 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.

[0317] The lens driving device 1010 may include a moving part 1200. The moving part 1200 may be disposed in the fixed part 1100. The moving part 1200 may be disposed inside the fixed part 1100. The moving part 1200 may be disposed on the fixed part 1100. The moving part 1200 may be movably disposed in the fixed part 1100. The moving part 1200 may be moved by the driving part 1300 based on the fixed part 1100. The moving part 1200 may be moved in the optical axis direction relative to the fixed part 1100 by the driving part 1300. The moving part 1200 may be moved in the optical axis direction. The moving part 1200 may move during AF driving. The lens may be coupled to the moving part 1200.

[0318] The lens driving device 1010 may include a holder 1210. The moving part 1200 may include a holder 1210. The holder 1210 may be an "AF holder". The holder 1210 may be a "coil frame". The holder 1210 may be disposed inside the base 1110. The holder 1210 may be disposed on the base 1110. The holder 1210 may be disposed inside the cover 1120. The holder 1210 may be disposed in a movable manner. The holder 1210 may be disposed in a movable manner along the optical axis direction.

[0319] The retainer 1210 may include an inner groove 1211. The inner groove 1211 may be a "ball receiving groove". The ball 1400 may be disposed in the inner groove 1211. The inner ball 1410 may be disposed in the inner groove 1211. The inner groove 1211 may directly contact the ball 1400. The inner groove 1211 may be disposed along the optical axis direction. The inner groove 1211 may guide the ball 1400 to move along the optical axis direction. The inner groove 1211 may include a plurality of grooves. The inner groove 1211 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed in diagonal directions relative to the optical axis.

[0320] The retainer 1210 may include an outer groove 1212. The outer groove 1212 may be a "ball receiving groove". The ball 1400 may be disposed in the outer groove 1212. The outer ball 1420 may be disposed in the outer groove 1212. The outer groove 1212 may directly contact the ball 1400. The outer groove 1212 may be disposed in the optical axis direction. The outer groove 1212 may guide the ball 1400 to move in the optical axis direction. The outer groove 1212 may include a plurality of grooves. The outer groove 1212 may include two grooves. The two grooves may be disposed parallel to each other. The two grooves may be disposed in a diagonal direction relative to the optical axis. The outer groove 1212 may be disposed at the opposite side of the inner groove 1211. The outer groove 1212 may have a shape corresponding to the inner groove 1211. The outer groove 1212 and the inner groove 1211 may be formed to have the same length in the optical axis direction.

[0321] The holder 1210 may include a protrusion 1213. The protrusion 1213 may be formed on an outer side surface of the holder 1210. The protrusion 1213 may protrude outward from the holder 1210. At least a portion of the connection portion 1623 of the external substrate 1620 may be disposed on an upper surface of the protrusion 1213. At least a portion of the coupling portion 1622 of the external substrate 1620 may be disposed on an upper surface of the protrusion 1213.

[0322] The lens driving device 1010 may include a driving part 1300. The driving part 1300 may move the moving part 1200 along the optical axis direction. The driving part 1300 may move the holder 1210 along the optical axis direction. The driving part 1300 may move the holder 1210 along the optical axis direction by electromagnetic force. The driving part 1300 may include a coil 1310 and a magnet 1320. The coil 1310 and the magnet 1320 may move the moving part 1200 along the optical axis direction.

[0323] The lens driving device 1010 may include a coil 1310. The driving portion 1300 may include a coil 1310. The coil 1310 may interact with the magnet 1320. The coil 1310 may face the magnet 1320. The coil 1310 and the magnet 1320 may face each other. The coil 1310 may be disposed at a position corresponding to the magnet 1320. The coil 1310 may overlap the magnet 1320 in a direction perpendicular to the optical axis. The coil 1310 may be disposed in the inner substrate 1610. The coil 1310 may be disposed in the side plate portion 1612 of the inner substrate 1610. The coil 1310 may be disposed in the holder 1210. The coil 1310 may be disposed in the holder 1210 through the inner substrate 1610. The coil 1310 may move together with the holder 1210.

[0324] In the second embodiment of the present invention, the coil 1310 can move in the optical axis direction. The coil 1310 can move in the optical axis direction by interacting with the magnet 1320. The coil 1310 can move together with the moving part 1200. The coil 1310 can move in the optical axis direction together with the moving part 1200. During the AF driving process, the coil 1310 can move in the optical axis direction together with the moving part 1200. The coil 1310 can be arranged in the moving part 1200. The coil 1310 can be fixed to the moving part 1200. The coil 1310 can be connected to the moving part 1200.

[0325] The lens driving device 1010 may include a magnet 1320. The driving part 1300 may include a magnet 1320. The magnet 1320 may be a "magnet". The magnet 1320 may be a permanent magnet. The magnet 1320 may be disposed in the fixed part 1100. The magnet 1320 may be disposed on the base 1110. The magnet 1320 may be disposed in the cover 1120. The magnet 1320 may be disposed in the side plate 1122 of the cover 1120. The magnet 1320 may be disposed on the outer side surface of the base 1110. The magnet 1320 may be disposed on the inner side surface of the base 1110. The magnet 1320 may be fixed to the base 1110. The magnet 1320 may be coupled to the base 1110. The magnet 1320 may be attached to the base 1110 with an adhesive. The magnet 1320 may be disposed inside the cover 1120. The magnet 1320 may interact with the coil 1310. The magnet 1320 may electromagnetically interact with the coil 1310. The magnet 1320 may be disposed at a position corresponding to the coil 1310. The magnet 1320 and the coil 1310 may face each other. The magnet 1320 may face the coil 1310. The magnet 1320 may overlap with the coil 1310 in a direction perpendicular to the optical axis.

[0326] The magnet 1320 may be a 4-pole magnet. The magnet 1320 may include a 4-pole magnetized magnet. The magnet 1320 may include a first magnet portion and a second magnet portion, the first magnet portion including an N pole and an S pole, and the second magnet portion including an N pole and an S pole. The first magnet portion and the second magnet portion may be arranged in a vertical direction. The first magnet portion and the second magnet portion are arranged spaced apart from each other in the vertical direction, and a neutral portion may be provided between the first magnet portion and the second magnet portion.

[0327] The lens driving device 1010 may include a sensor 1330. The driving part 1300 may include the sensor 1330. The sensor 1330 may be a Hall sensor. The sensor 1330 may be disposed in the inner substrate 1610. The sensor 1330 may detect the magnet 1320. The sensor 1330 may detect the movement of the magnet 1320. The movement amount or position of the magnet 1320 detected by the sensor 1330 may be used for feedback of the autofocus drive. The sensor 1330 may be disposed in the moving part 1200. The sensor 1330 may be disposed in the holder 1210. The sensor 1330 may be disposed in the holder 1210 through the inner substrate 1610. The sensor 1330 may move together with the moving part 1200.

[0328] The sensor 1330 may be a driver IC. The driver IC may include a sensing unit. The sensing unit may include a Hall IC. The driver IC may be electrically connected to the coil 1310. The driver IC may supply current to the coil 1310.

[0329] The sensor 1330 may be disposed inside the coil 1310. The sensor 1330 may overlap with a neutral portion of the magnet 1320 in a direction perpendicular to the optical axis. As a modified embodiment, the sensor 1330 may be disposed outside the coil 1310.

[0330] The lens driving device 1010 may include a yoke 1340. The yoke 1340 may be disposed at a position corresponding to the magnet 1320. The yoke 1340 may be disposed in the magnet 1320. The yoke 1340 may be disposed between the magnet 1320 and the side plate 1122 of the cover 1120. The yoke 1340 may be disposed on an outer surface of the magnet 1320. The inner surface of the magnet 1320 may face the coil 1310. Thus, the yoke 1340 may increase the electromagnetic interaction force between the magnet 1320 and the coil 1310 by minimizing the leakage flux of the magnet 1320.

[0331] The lens driving device 1010 may include a guide member. The guide member may include a ball bearing 1400. The guide member may include a shaft. The guide member may include a cylindrical member. The guide member may guide the movement of the moving part 1200 relative to the fixed part 1100 in a specific direction. In a modified embodiment, the ball bearing 1400 of the second embodiment of the present invention may be replaced with a shaft. In this case, the tilting phenomenon of the moving part 1200 can be prevented.

[0332] The lens driving device 1010 may include a ball bearing 1400. The ball bearing 1400 may guide the movement of the moving part 1200 relative to the fixed part 1100 in the optical axis direction. The ball bearing 1400 may guide the movement of the retainer 1210 relative to the base 1110 in the optical axis direction. The ball bearing 1400 may be disposed between the fixed part 1100 and the moving part 1200. The ball bearing 1400 may be disposed between the base 1110 and the retainer 1210. The ball bearing 1400 may be disposed between the base 1110 and the retainer 1210 along the x direction. Alternatively, the ball bearing 1400 may be disposed between the base 1110 and the retainer 1210 along the y direction. The ball bearing 1400 may be disposed in a groove of the base 1110. The ball bearing 1400 may be disposed in a groove of the retainer 1210. The ball bearing 1400 may have a spherical shape. The ball bearing 1400 may be formed of metal. Grease may be applied to the surface of the ball 1400 .

[0333] The ball bearing 1400 may be disposed at the first corner of the base 1110. The ball bearing 1400 may be disposed at the second corner in the diagonal direction of the first corner of the base 1110. The ball bearing 1400 may be disposed at each of the first corner and the second corner of the base 1110. The first corner region and the second corner region of the fixing portion 1100 may be disposed in the diagonal direction relative to the optical axis. The ball bearing 1400 may be disposed in the first corner region and the second corner region of the fixing portion 1100. Two groups of ball bearings 1400 may be disposed at each of the first corner and the second corner of the base 1110. At this time, one group may include 4 ball bearings. The two groups may be disposed at the opposite sides of the column portion of the retainer 1210.

[0334] The ball bearing 1400 may include an inner ball bearing 1410. The inner ball bearing 1410 may be disposed in the column portion 1111 of the base 1110. The inner ball bearing 1410 may be disposed in the inner groove 1111-1 of the base 1110. The inner ball bearing 1410 may be disposed in the inner groove 1211 of the retainer 1210. The inner ball bearing 1410 may be disposed in the inner groove 1211 of the moving part 1200. The inner ball bearing 1410 may be disposed in the inner groove 1111-1 of the base 1110 and the inner groove 1211 of the retainer 1210. The inner ball bearing 1410 may be disposed between the inner groove 1111-1 of the base 1110 and the inner groove 1211 of the retainer 1210. The inner ball bearing 1410 may be disposed between the column portion 1111 of the moving part 1200 and the fixed part 1100.

[0335] The ball bearing 1400 may include an outer ball bearing 1420. The outer ball bearing 1420 may be disposed in the outer wall portion 1112 of the base 1110. The outer ball bearing 1420 may be disposed in the outer groove 1112-1 of the base 1110. The outer ball bearing 1420 may be disposed in the outer groove 1212 of the retainer 1210. The outer ball bearing 1420 may be disposed in the outer groove 1112-1 of the base 1110 and the outer groove 1212 of the retainer 1210. The outer ball bearing 1420 may be disposed between the outer groove 1112-1 of the base 1110 and the outer groove 1212 of the retainer 1210. The outer ball bearing 1420 may be disposed between the outer groove 1112-1 of the fixed part 1100 and the outer groove 1212 of the moving part 1200. The outer ball bearing 1420 may be disposed between the outer wall portion 1112 of the moving part 1200 and the fixed part 1100.

[0336] The inner ball 1410 may include a plurality of inner balls 1410. The plurality of inner balls 1410 may be arranged along the optical axis direction. The inner ball 1410 may include four inner balls 1410. The inner ball 1410 may include a first inner ball to a fourth inner ball. Two inner balls among the four inner balls 1410 may have a large diameter, while the other two inner balls may have a small diameter. The two balls with a large diameter may be arranged at the uppermost and lowermost positions. That is, the two balls with a small diameter may be arranged between the two balls with a large diameter.

[0337] The inner ball 1410 may include an uppermost inner ball 1411. The uppermost inner ball 1411 may be disposed at the highest position in the inner ball 1410. The uppermost inner ball 1411 may be disposed to be closest to the upper plate 1121 of the cover 1120 in the inner ball 1410. The inner ball 1410 may include a lowermost inner ball 1412. The lowermost inner ball 1412 may be disposed at the lowest position in the inner ball 1410. The lowermost inner ball 1412 may be disposed to be closest to the lower portion of the base 1110 in the inner ball 1410. The plurality of inner balls 1410 may include a ball having a diameter smaller than each of the uppermost inner ball 1411 and the lowermost inner ball 1412. The plurality of inner balls 1410 may include a ball disposed between the uppermost inner ball 1411 and the lowermost inner ball 1412.

[0338] The outer ball 1420 may include a plurality of outer balls 1420. The plurality of outer balls 1420 may be arranged along the optical axis direction. The outer ball 1420 may include four outer balls 1420. The outer ball 1420 may include first to fourth outer balls. Two of the four outer balls 1420 may have a large diameter, while the other two outer balls may have a small diameter. The two balls with a large diameter may be arranged at the highest position and the lowest position. That is, the two balls with a small diameter may be arranged between the two balls with a large diameter.

[0339] The outer ball 1420 may include an uppermost outer ball 1421. The uppermost outer ball 1421 may be disposed at the highest position among the outer balls 1420. The uppermost outer ball 1421 may be disposed to be the upper plate 1121 closest to the cover 1120 among the outer balls 1420. The outer ball 1420 may include a lowermost outer ball 1422. The lowermost outer ball 1422 may be disposed at the lowest position among the outer balls 1420. The lowermost outer ball 1422 may be disposed to be the lower plate closest to the base 1110 among the outer balls 1420. The plurality of outer balls 1420 may include a ball having a diameter smaller than each of the uppermost outer ball 1421 and the lowermost outer ball 1422. The plurality of outer balls 1420 may include a ball disposed between the uppermost outer ball 1421 and the lowermost outer ball 1422.

[0340] The height of the point where the elastic member 1520 presses the plate member 1510 is lower than the height of the lowermost inner ball 1411 and the uppermost outer ball 1421, and can be higher than the height of the highermost inner ball 1412 and the lowermost outer ball 1422. More specifically, as Fig.61As shown in (a), when the moving part 1200 moves upward, the height b of the point where the elastic member 1520 presses the plate member 1510 may be higher than the height a of the lowermost inner ball 1422 and the lowermost outer ball 1412, whichever is higher. There may be a gap c at the height between the two points. In addition, as Fig.61 As shown in (b), when the moving part 1200 moves downward, the height e of the point where the elastic member 1520 presses the plate member 1510 can be lower than the height d of the lower ball disposed among the uppermost inner ball 1421 and the uppermost outer ball 1411. A gap f may exist at the height between the two points. Thus, the moment generated when the elastic member 1520 presses the plate member 1510 can be prevented from being generated or the moment generated when the elastic member 1520 presses the plate member 1510 can be minimized. In other words, the phenomenon of the plate member 1510 being tilted or separated can be prevented.

[0341] The lens driving device 1010 may include a pressurizing member. The pressurizing member may be a "ball pressurizing member". The pressurizing member may pressurize the ball 1400. The pressurizing member may be formed to pressurize the ball. The ball 1400 pressurized by the pressurizing member may be held between the fixed portion 1100 and the moving portion 1200. The ball 1400 pressurized by the pressurizing member may be held between the base 1110 and the retainer 1210. The pressurizing member may hold the ball 1400 in contact with the fixed portion 1100 and the moving portion 1200. The pressurizing member may hold the ball 1400 in contact with the base 1110 and the retainer 1210.

[0342] The lens driving device 1010 may include a plate member 1510. The pressing member may include the plate member 1510. The plate member 1510 may be disposed on the ball bearing 1400. The plate member 1510 may be disposed in the elastic member 1520. The plate member 1510 may be disposed on the base 1110. The plate member 1510 may be disposed between the elastic member 1520 and the ball bearing 1400. The plate member 1510 may pressurize the ball bearing 1400 toward the holder 1210 through the elastic member 1520. The plate member 1510 may be disposed between the ball bearing 1400 and the fixing portion 1100. The plate member 1510 may be disposed between the inner ball bearing 1410 and the column portion 1111 of the fixing portion 1100.

[0343] The lens driving device 1010 may include an elastic member 1520. The pressurizing member may include the elastic member 1520. The elastic member 1520 may be a spring. The elastic member 1520 may be a conical spring. The elastic member 1520 may be disposed in the fixed portion 1100. The elastic member 1520 may pressurize the ball bearing 1400 toward the moving portion 1200. The elastic member 1520 may pressurize the plate member 1510 toward the ball bearing 1400. The elastic member 1520 may be disposed between the plate member 1510 and the fixed portion 1100. The elastic member 1520 may push the plate member 1510 against the fixed portion 1100. The elastic member 1520 may pressurize the plate member 1510 in a direction opposite to the fixed portion 1100. The elastic member 1520 may be disposed between the plate member 1510 and the column portion 1111 of the fixed portion 1100. The elastic member 1520 may be disposed in the inner groove 1111 - 1 of the fixing portion 1100 .

[0344] As a modified embodiment, the elastic member 1520 may be provided in the moving part 1200. At this time, the elastic member 1520 may pressurize the ball 1400 toward the fixed part 1100. The elastic member 1520 may be provided on one of the fixed part 1100 and the moving part 1200 to pressurize the ball 1400 toward the other of the fixed part 1100 and the moving part 1200. The elastic member 1520 may pressurize the plate member 1510. The elastic member 1520 may be provided between the plate member 1510 and the base 1110. The elastic member 1520 may be provided between the ball 1400 and the base 1110. The elastic member 1520 may be provided on the base 1110. The elastic member 1520 may be provided in the inner groove 1111-1 of the base 1110. The elastic member 1520 may pressurize the ball 1400 toward the holder 1210. Thereby, the contact state of the ball 1400 between the plate member 1510 and the retainer 1210 can be maintained.

[0345] The elastic member 1520 may include a curved portion. The curved portion may include a curved shape. The curved portion may include a plurality of curved portions. The curved portion may include three curved portions. The elastic member 1520 may be bent at least three times. The elastic member 1520 may include an upper curved portion 1521. The elastic member 1520 may include a lower curved portion 1522. The elastic member 1520 may include a connecting curved portion 1523. The connecting curved portion 1523 may be disposed between the upper curved portion 1521 and the lower curved portion 1522. The upper curved portion 1521 may form an obtuse angle. The lower curved portion 1522 may form an obtuse angle. The connecting curved portion 1523 may form an obtuse angle. The upper curved portion 1521 may be disposed in the fixing portion 1100. The lower curved portion 1522 may be disposed in the fixing portion 1100. The connecting curved portion 1523 may be disposed in the plate member 1510. By this structure, the elastic member 1520 may push the plate member 1510 against the fixing portion 1100. The connection bent portion 1523 may contact the plate member 1510 to pressurize the plate member 1510 toward the ball bearing 1400 .

[0346] The lens driving device 1010 may include a substrate 1600. The substrate 1600 may include a flexible printed circuit board (FPCB). The substrate 1600 may be electrically connected to the coil 1310. The substrate 1600 may be electrically connected to the sensor 1330.

[0347] The lens driving device 1010 may include an inner substrate 1610. The inner substrate 1610 may be electrically connected to the coil 1310. The inner substrate 1610 may be electrically connected to the sensor 1330. The inner substrate 1610 may be disposed on the moving part 1200. The inner substrate 1610 may be disposed on the holder 1210. The inner substrate 1610 may be fixed to the holder 1210. The inner substrate 1610 may be coupled to the holder 1210. The inner substrate 1610 may be attached to the holder 1210 with an adhesive. The inner substrate 1610 may include a flexible substrate. The inner substrate 1610 may include a flexible printed circuit board (FPCB). The inner substrate 1610 may include an elastic portion. The inner substrate 1610 may include an elastic member.

[0348] The inner substrate 1610 may include an upper plate portion 1611. The upper plate portion 1611 may be disposed on the moving portion 1200. The upper plate portion 1611 may be disposed on an upper surface of the moving portion 1200. The upper plate portion 1611 may be disposed on the holder 1210. The upper plate portion 1611 may be disposed on an upper surface of the holder 1210. The upper plate portion 1611 may be disposed between the holder 1210 and the upper plate 1121 of the cover 1120.

[0349] The inner substrate 1610 may include a terminal 1611-1. The terminal 1611-1 may be disposed on an upper plate portion 1611 of the inner substrate 1610. The terminal 1611-1 may be electrically connected to the coil 1310. The terminal 1611-1 may be electrically connected to the sensor 1330. The terminal 1611-1 of the inner substrate 1610 may be electrically connected to a terminal 1622-1 of the outer substrate 1620. The terminal 1611-1 of the inner substrate 1610 may be connected to the terminal 1622-1 of the outer substrate 1620 through a conductive member. The terminal 1611-1 of the inner substrate 1610 may be connected to the terminal 1622-1 of the outer substrate 1620 through welding.

[0350] The inner substrate 1610 may include a side plate portion 1612. The side plate portion 1612 may be disposed on a side surface of the holder 1210. The side plate portion 1612 may be disposed on a side surface of the moving portion 1200. The side plate portion 1612 may be disposed on an outer side surface of the holder 1210. The side plate portion 1612 may be disposed on an outer side surface of the moving portion 1200. The side plate portion 1612 may extend from the upper plate portion 1611. The side plate portion 1612 may extend downward from the upper plate portion 1611. The side plate portion 1612 may be bent from the upper plate portion 1611. The coil 1310 may be disposed on the side plate portion 1612. The sensor 1330 may be disposed on the side plate portion 1612. The side plate portion 1612 may be disposed between the coil 1310 and the holder 1210.

[0351] Although the inner substrate 1610 is described as a separate component from the moving part 1200 , the inner substrate 1610 may be included in the moving part 1200 .

[0352] The lens driving device 1010 may include an external substrate 1620. The external substrate 1620 may be disposed on the base 1110. The external substrate 1620 may be electrically connected to the coil 1310. The external substrate 1620 may be electrically connected to the sensor 1330. The external substrate 1620 may connect the holder 1210 and the base 1110. The external substrate 1620 may elastically connect the holder 1210 and the base 1110. The external substrate 1620 may support the holder 1210 in a movably manner relative to the base 1110. The external substrate 1620 may guide the holder 1210 to move relative to the base 1110 in the optical axis direction. The external substrate 1620 may include a flexible substrate. The external substrate 1620 may include a flexible printed circuit board (FPCB). The external substrate 1620 may include an elastic portion. The external substrate 1620 may include an elastic member. The external substrate 1620 may be disposed on the fixed portion 1100.

[0353] The outer substrate 1620 may include an outer side portion 1621. The outer side portion 1621 may be disposed on the base 1110. The outer side portion 1621 may be disposed on a side surface of the base 1110. The outer side portion 1621 may be disposed on an outer side surface of the base 1110.

[0354] The outer substrate 1620 may include a terminal 1621-1. The outer side portion 1621 of the outer substrate 1620 may include a terminal 1621-1. The terminal 1621-1 may be electrically connected to the terminal 1622-1. The terminal 1621-1 may be disposed at a lower end portion of the base 1110. The terminal 1621-1 may be coupled to the printed circuit board 1050. The terminal 1621-1 may be connected to a terminal of the printed circuit board 1050 by welding. The terminal 1621-1 may be coupled to a terminal of the printed circuit board 1050 by a conductive member. The terminal 1621-1 may be connected to a terminal of the printed circuit board 1050. The terminal 1621-1 may be electrically connected to a terminal of the printed circuit board 1050.

[0355] The outer substrate 1620 may include a coupling portion 1622. The coupling portion 1622 may be coupled to the inner substrate 1610. The coupling portion 1622 may move together with the inner substrate 1610. The coupling portion 1622 may move together with the holder 1210.

[0356] The outer substrate 1620 may include a terminal 1622-1. The coupling portion 1622 of the outer substrate 1620 may include a terminal 1622-1. The terminal 1622-1 may be coupled to the terminal 1611-1 of the inner substrate 1610. The terminal 1622-1 of the outer substrate 1620 may be coupled to the terminal 1611-1 of the inner substrate 1610 by welding. The terminal 1622-1 of the outer substrate 1620 may be coupled to the terminal 1611-1 of the inner substrate 1610 by a conductive member. The terminal 1622-1 of the outer substrate 1620 may be connected to the terminal 1611-1 of the inner substrate 1610. The terminal 1622-1 of the outer substrate 1620 may be electrically connected to the terminal 1611-1 of the inner substrate 1610.

[0357] The outer substrate 1620 may include a connection portion 1623. The connection portion 1623 may be an "extension portion". The connection portion 1623 may be a "leg portion". The connection portion 1623 may extend from the outer side portion 1621. The connection portion 1623 may extend from the coupling portion 1622. The connection portion 1623 may connect the outer side portion 1621 and the coupling portion 1622. At least a portion of the connection portion 1623 may move with the holder 1210. At least a portion of the connection portion 1623 may move with the inner substrate 1610. At least a portion of the connection portion 1623 may be arranged perpendicular to the optical axis direction. The connection portion 1623 of the outer substrate 1620 may be coupled to the inner substrate 1610 so that the inner substrate 1610 may move along the optical axis direction. The connection portion 1623 may include a curved shape. The connection portion 1623 may include a curved portion. The connection portion 1623 may include a U-shaped portion.

[0358] The lens driving device 1010 may include a reinforcing member 1710. The reinforcing member 1710 may be disposed on the base 1110. The reinforcing member 1710 may be configured to reinforce the strength of the base 1110. The reinforcing member 1710 may prevent damage to the base 1110. The reinforcing member 1710 may prevent damage to the column portion 1111 of the base 1110. The reinforcing member 1710 may prevent damage to the outer wall portion 1112 of the base 1110. The reinforcing member 1710 may have elasticity. The reinforcing member 1710 may be formed of metal. The reinforcing member 1710 may include a shape that is bent at least twice. When viewed from above, the reinforcing member 1710 may be formed into a symbol The reinforcing member 1710 may be opened inwardly.

[0359] The reinforcing member 1710 may include an inner portion 1711. The inner portion 1711 may be disposed on the opposite side of the inner groove 1111-1 of the column portion 1111 of the fixing portion 1100. The reinforcing member 1710 may include an outer portion 1712. The outer portion 1712 may be disposed on the opposite side of the outer groove 1112 of the outer wall portion 1112 of the fixing portion 1100. The reinforcing member 1710 may include a connecting portion 1713. The connecting portion 1713 may connect the inner portion 1711 and the outer portion 1712.

[0360] The lens driving device 1010 may include a cover 1720. The cover 1720 may be disposed above the ball 1400. The cover 1720 may overlap the ball 1400 in the optical axis direction. The cover 1720 may overlap the inner ball 1410 in the optical axis direction. The cover 1720 may overlap the outer ball 1420 in the optical axis direction. The cover 1720 may be disposed on the inner groove 1211 and the outer groove 1212 of the retainer 1210 to prevent the ball 1400 from being separated upward.

[0361] Hereinafter, the configuration of a lens driving device according to a modified embodiment will be described with reference to the accompanying drawings.

[0362] Fig.62 is a perspective view of a lens driving device according to a modified embodiment; Fig.63 is from Fig.62 The cross-section seen by AA in the figure; Fig.64 is from Fig.62 The cross-section as seen by BB in the figure; Fig.65 is an exploded perspective view of a lens driving device according to a modified embodiment; Fig.66 Observed from the other direction Fig.65 an exploded perspective view of Fig.67 are a plan view and a partially enlarged view of a state in which a cover is omitted from a lens driving device according to a modified embodiment.

[0363] The lens driving device 110-1 according to the modified embodiment may include a fixing portion 1100. The description of the fixing portion 1100 in the second embodiment of the present invention may be similarly applied to the fixing portion 1100.

[0364] The lens driving device 110-1 according to the modified embodiment may include a moving part 1200. The description of the moving part 1200 in the second embodiment of the present invention may be similarly applied to the description of the moving part 1200.

[0365] The lens driving device 110-1 according to the modified embodiment may include a driving part. In the modified embodiment, the positions of the coil and the magnet may be reversed compared to the second embodiment of the present invention. That is, in the modified embodiment, the coil 1310-1 may be disposed on the fixed part 1100, and the magnet 1320-1 may be disposed on the moving part 1200.

[0366] The lens driving device 110-1 may include a coil 1310-1. The driving part may include the coil 1310-1. The coil 1310-1 may be disposed on the substrate 1600-1. The coil 1310-1 may be disposed on the fixed part 1100. The coil 1310-1 may be disposed on the base 1110. The coil 1310-1 may be disposed on the cover 1120. The coil 1310-1 may be disposed on the outer side of the magnet 1320-1. The coil 1310-1 may be disposed between the side plate 1122 of the cover 1120 and the magnet 1320-1. The coil 1310-1 may be fixed. Even during AF driving, the fixed state of the coil 1310-1 may be maintained.

[0367] The lens driving device 110-1 may include a magnet 1320-1. The driving part may include the magnet 1320-1. The magnet 1320-1 may be disposed on the moving part 1200. The magnet 1320-1 may be disposed on the holder 1210. The magnet 1320-1 may be disposed between the coil 1310-1 and the holder 1210. The magnet 1320-1 may be disposed inside the coil 1310-1. The magnet 1320-1 may overlap with the coil 1310-1 in a direction perpendicular to the optical axis. The magnet 1320-1 may face the coil 1310-1. The magnet 1320-1 and the coil 1310-1 may face each other. The magnet 1320-1 may be disposed at a position corresponding to the coil 1310-1. The magnet 1320-1 may interact with the coil 1310-1. The magnet 1320-1 may electromagnetically interact with the coil 1310-1. The magnet 1320-1 may move. The magnet 1320-1 may be provided in a movable manner. The magnet 1320-1 may move during AF driving. The magnet 1320-1 may move together with the holder 1210. The magnet 1320-1 may move along the optical axis direction.

[0368] The lens driving device 110-1 may include a sensor 1330-1. The driving part may include the sensor 1330-1. The sensor 1330-1 may detect the magnet 1320-1. The sensor 1330-1 may be disposed on the substrate 1600-1. The sensor 1330-1 may be disposed inside the coil 1310-1. The sensor 1330-1 may be a Hall sensor. The movement amount or position of the magnet 1320-1 detected by the sensor 1330-1 may be used for feedback of the autofocus drive.

[0369] The lens driving device 110-1 may include a yoke 1340-1. The driving part may include a yoke 1340-1. The yoke 1340-1 may be disposed at a position corresponding to the magnet 1320-1. The yoke 1340-1 may be disposed on the magnet 1320-1. The yoke 1340-1 may be disposed between the magnet 1320 and the retainer 1210. The yoke 1340-1 may be disposed on the inner surface of the magnet 1320-1. The outer surface of the magnet 1320-1 may face the coil 1310-1. Thus, the yoke 1340-1 may increase the electromagnetic interaction force between the magnet 1320-1 and the coil 1310-1 by minimizing the leakage flux of the magnet 1320-1.

[0370] The lens driving device 110-1 may include a substrate 1600-1. The substrate 1600-1 may be disposed on the fixed portion 1100. The substrate 1600-1 may be disposed on the base 1110. The substrate 1600-1 may be disposed on the cover 1120. The substrate 1600-1 may be disposed on the side plate 1122 of the cover 1120. The substrate 1600-1 may be disposed on the inner surface of the side plate 1122 of the cover 1120. The substrate 1600-1 may be disposed on the outer surface of the side plate 1122 of the cover 1120. The substrate 1600-1 may be disposed parallel to the optical axis. The coil 1310-1 and the sensor 1330-1 may be disposed on the substrate 1600-1. The substrate 1600-1 may include a printed circuit board. The substrate 1600-1 may include a flexible printed circuit board (FPCB).

[0371] The lens driving device 110-1 according to the modified embodiment may include a ball bearing 1400. The description of the ball bearing 1400 in the second embodiment of the present invention may be similarly applied to the description of the ball bearing 1400.

[0372] The second embodiment and the modified embodiment of the present invention have the advantage that, compared with the comparative example in which the balls are pressurized by the attraction between the yoke and the magnet, by using a conical spring, there is no centering force of the yoke in the optical axis direction. In addition, by arranging the balls 1400 diagonally, it is possible to prevent the moving part 1200 from rotating or tilting and ensure necessary adhesion. However, as a modified embodiment, two groups of balls 1400 may be arranged on one side of the fixed part 1100 instead of in the diagonal direction. As another modified embodiment, the balls 1400 may be used as an axis structure to minimize the tilt of the module, i.e., the moving part 1200.

[0373] Hereinafter, auto focus (AF) driving of a lens driving device according to a second embodiment of the present invention will be described with reference to the accompanying drawings.

[0374] Figures 68 to 701 is a view for explaining the automatic focus driving of the lens driving device according to the second embodiment of the present invention. Fig.68 is a cross-sectional view of the moving portion in an initial state where no current is applied to the AF coil. Fig.69 is a cross-sectional view illustrating a state in which the moving portion moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.70 is a cross-sectional view illustrating a moving portion that moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0375] like Fig.68 As shown, in an initial position where no current is applied to the coil 1310 , the moving portion 1200 may be disposed at a position spaced apart from both the upper plate 1121 of the cover 1120 and the base 1110 .

[0376] When a positive current is applied to the coil 1310, the coil 1310 may move upward along the optical axis direction due to the electromagnetic interaction between the coil 1310 and the magnet 1320 (see Fig.69 a). At this time, the holder 1210 can move upward along the optical axis direction together with the coil 1310. In addition, the lens can move upward along the optical axis direction together with the holder 1210. Therefore, the distance between the lens and the image sensor is changed, so that the focus of the image formed on the image sensor through the lens can be adjusted.

[0377] When a reverse current is applied to the coil 1310, the coil 1310 may move downward along the optical axis due to the electromagnetic interaction between the coil 1310 and the magnet 1320 (see Fig.70 b). At this time, the holder 1210 can move downward along the optical axis direction together with the coil 1310. In addition, the lens can move downward along the optical axis direction together with the holder 1210. Therefore, the distance between the lens and the image sensor is changed, so that the focus of the image formed on the image sensor through the lens can be adjusted.

[0378] At the same time, in the process of moving the coil 1310, the sensor 1330 moves with the coil 1310 and detects the magnetic field strength of the magnet 1320 to detect the amount or position of the lens moving along the optical axis. The movement amount or position of the lens in the optical axis direction detected by the sensor 1330 can be used for automatic focusing feedback control.

[0379] Hereinafter, auto focus (AF) driving of a lens driving device according to a modified embodiment will be described with reference to the accompanying drawings.

[0380] Figure 71 to Figure 73 FIG. 2 is a diagram for explaining the automatic focus driving of the lens driving device according to the second embodiment of the present invention. Fig.71is a cross-sectional view illustrating a state of a moving portion in an initial state in which no current is applied to the AF coil. Fig.72 is a cross-sectional view illustrating a state in which the moving portion moves upward in the optical axis direction when a forward current is applied to the AF coil. Fig.73 is a cross-sectional view illustrating a moving portion that moves downward in the optical axis direction when a reverse current is applied to the AF coil.

[0381] like Fig.71 As shown, in an initial position where no current is applied to the coil 1310 - 1 , the moving portion 1200 may be disposed at a position spaced apart from both the upper plate 1121 of the cover 1120 and the base 1110 .

[0382] When a forward current is applied to the coil 1310-1, the magnet 1320-1 may move upward along the optical axis direction due to the electromagnetic interaction between the coil 1310-1 and the magnet 1320-1 (see Fig.72 At this time, the holder 1210 can move upward along the optical axis direction together with the magnet 1320-1. In addition, the lens can move upward along the optical axis direction together with the holder 1210. Therefore, the distance between the lens and the image sensor is changed, so that the focus of the image formed on the image sensor through the lens can be adjusted.

[0383] When a reverse current is applied to the coil 1310-1, the magnet 1320-1 may move downward along the optical axis direction due to the electromagnetic interaction between the coil 1310-1 and the magnet 1320-1 (see Fig.73 b). At this time, the holder 1210 can move downward along the optical axis together with the magnet 1320-1. In addition, the lens can move downward along the optical axis together with the holder 1210. Therefore, the distance between the lens and the image sensor is changed, so that the focus of the image formed on the image sensor through the lens can be adjusted.

[0384] Meanwhile, during the movement of magnet 1320-1, sensor 1330-1 can detect the amount or position of the lens moving in the optical axis direction by detecting the magnetic field strength of magnet 1320-1. The amount or position of the lens moving in the optical axis direction detected by sensor 1330-1 can be used for automatic focusing feedback control.

[0385] Hereinafter, a camera device according to a second embodiment of the present invention will be described with reference to the accompanying drawings.

[0386] Fig.74 is an exploded perspective view of a camera device according to a second embodiment of the present invention.

[0387] The camera device 1010A may include a camera module.

[0388] The camera device 1010A may include a lens module 1020. The lens module 1020 may include at least one lens. The lens may be disposed at a position corresponding to the image sensor 1060. The lens module 1020 may include a lens and a lens barrel. The lens module 1020 may be coupled to a holder 1210 of the lens driving device 1010. The lens module 1020 may be coupled to the holder 1210 by screw coupling and / or adhesive. The lens module 1020 may move integrally with the holder 1210.

[0389] The camera device 1010A may include an optical filter 1030. The optical filter 1030 may be used to block light of a specific frequency band in the light passing through the lens module 1020 from entering the image sensor 1060. The optical filter 1030 may be arranged parallel to the xy plane. The optical filter 30 may be arranged between the lens module 1020 and the image sensor 1060. The optical filter 1030 may be arranged in the sensor base 1040. In a modified embodiment, the optical filter 1030 may be arranged in the base 1110. The optical filter 1030 may include an infrared filter. The infrared filter may block light in the infrared region from being incident on the image sensor 1060.

[0390] The camera device 1010A may include a sensor base 1040. The sensor base 1040 may be disposed between the lens driving device 1010 and the printed circuit board 1050. The sensor base 1040 may include a protruding portion 1041 in which the filter 1030 is disposed. An opening may be formed in a portion of the sensor base 1040 in which the filter 1030 is disposed, so that light passing through the filter 1030 may be incident on the image sensor 1060. An adhesive member may couple or attach the base 1110 of the lens driving device 1010 to the sensor base 1040. The adhesive member may also be used to prevent foreign matter from entering the lens driving device 1010. The adhesive member may include any one or more of an epoxy resin, a thermosetting adhesive, and an ultraviolet curing adhesive.

[0391] The camera device 1010A may include a printed circuit board (PCB) 1050. The printed circuit board 1050 may be a substrate or a circuit board. The lens driving device 1010 may be disposed on the printed circuit board 1050. The sensor base 1040 may be disposed between the printed circuit board 1050 and the lens driving device 1010. The printed circuit board 1050 may be electrically connected to the lens driving device 1010. The image sensor 1060 may be disposed on the printed circuit board 1050. The printed circuit board 1050 may include various circuits, elements, and control units to convert an image formed by the image sensor 1060 into an electrical signal and transmit the converted electrical signal to an external device.

[0392] The camera device 1010A may include an image sensor 1060. The image sensor 1060 may be a component in which light passing through the lens and the filter 1030 is incident to form an image. The image sensor 1060 may be mounted on the printed circuit board 1050. The image sensor 1060 may be electrically connected to the printed circuit board 1050. For example, the image sensor 1060 may be coupled to the printed circuit board 1050 by surface mounting technology (SMT). As another example, the image sensor 1060 may be coupled to the printed circuit board 1050 using a flip chip technology. The image sensor 1060 may be arranged so that the optical axis is consistent with the lens. That is, the optical axis of the image sensor 1060 and the optical axis of the lens may be aligned. The image sensor 1060 may convert the light irradiated onto the effective image area of ​​the image sensor 1060 into an electrical signal. The image sensor 1060 may be any one of a charge coupled device (CCD), a metal oxide semiconductor (MOS), a CPD, and a CID.

[0393] The camera device 1010A may include a motion sensor 1070. The motion sensor 1070 may be mounted on the printed circuit board 1050. The motion sensor 1070 may be electrically connected to the control unit 1080 through a circuit pattern provided on the printed circuit board 1050. The motion sensor 1070 may output rotational angular velocity information due to the motion of the camera module. The motion sensor 1070 may include a 2-axis or 3-axis gyro sensor or an angular velocity sensor.

[0394] The camera device 1010A may include a control unit 1080. The control unit 1080 may be disposed in the printed circuit board 1050. The control unit 1080 may be electrically connected to the coil 1310 of the lens driving device 1010. The control unit 1080 may independently control the direction, intensity, and amplitude of the current supplied to the coil 1310. The control unit 1080 may perform an automatic focusing function and / or a hand shake correction function by controlling the lens driving device 1010. In addition, the control unit 1080 may perform automatic focusing feedback control and / or hand shake correction feedback control of the lens driving device 1010.

[0395] The camera device 1010A may include a connector 1090. The connector 1090 may be electrically connected to the printed circuit board 1050. The connector 1090 may include a port for electrically connecting to an external device.

[0396] Hereinafter, an optical device according to a second embodiment of the present invention will be described with reference to the accompanying drawings.

[0397] Fig.75 is a perspective view of an optical device according to a second embodiment of the present invention; and Fig.76 is a perspective view of an optical device according to a modified embodiment.

[0398] The optical device 1001 is 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. The optical device 1001 may include any device for taking an image or a photo.

[0399] The optical device 1001 may include a body 1020. The optical device 1001 may include a camera device 1010A. The camera device 1010A may be disposed on the body 1020. The camera device 1010A may photograph an object. The optical device 1001 may include a display. The display may be disposed on the body 1020. The display may output at least one of a video and an image photographed by the camera device 1010A. The display may be disposed on a first surface of the body 1020. The camera device 1010A may be disposed on at least one of the first surface of the body 1020 and a second surface opposite to the first surface. Fig.74 As shown, in the camera device 1010A, three cameras may be arranged in a vertical direction. Fig.76 As shown, in the camera device 1010A-1, three cameras may be arranged in the horizontal direction.

[0400] Although the first embodiment and the second embodiment have been described above, some configurations of the first embodiment and some configurations of the second embodiment can be used interchangeably. That is to say, some configurations of the first embodiment can be replaced with the corresponding configurations of the second embodiment. In addition, some configurations of the second embodiment can be replaced with the corresponding configurations of the first embodiment. In addition, the third embodiment of the present invention can include some configurations of the first embodiment and some configurations of the second embodiment together.

[0401] Although the embodiments of the present invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing its technical spirit or basic features. Therefore, it should be understood that the above embodiments are illustrative in all aspects and not restrictive.

Claims

1. A lens driving device, comprising: base; a housing, the housing being disposed on the base; A coil frame, wherein the coil frame is arranged in the housing; a first ball, the first ball being disposed between a side surface of the housing and the base; a second ball, the second ball being disposed between the housing and an upper side portion of the coil frame; a first elastic member coupled to a portion of the upper side of the bobbin; a second elastic member coupled to a lower side of the housing; as well as A wire connecting the first elastic member and the second elastic member.

2. The lens driving device according to claim 1, wherein: The base includes a first guide portion configured to guide the movement of the first ball.

3. The lens driving device according to claim 2, wherein: The side surface of the housing includes a second guide portion configured to guide movement of the first rolling ball.

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

5. The lens driving device according to claim 1, wherein: The housing includes a first housing including an upper plate having a metal member and a second housing disposed on the first housing and having a protrusion configured to guide the second ball.

6. A lens driving device, comprising: Fixed part; a first moving part, the first moving part being disposed in the fixed part; a second moving part, the second moving part being disposed in the first moving part; a first driving portion configured to move the first moving portion along an optical axis direction; as well as a second driving portion configured to move the second moving portion in a direction perpendicular to the optical axis direction, The first driving part includes a first driving unit arranged on the first moving part and a second driving unit arranged on the fixed part, and The second driving part includes a third driving unit arranged on the second moving part and a fourth driving unit arranged on the first moving part.

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

8. The lens driving device according to claim 7, wherein: The coil is configured to move together with the first moving part.

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

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

Images