Lens driving device, camera device, and optical device

Abstract

A first embodiment of the present invention relates to a lens driving device comprising: a fixing unit; a moving unit disposed in the fixed unit; a coil arranged in the fixing unit; a first magnet disposed in the moving unit and interacting with the coil; a second magnet disposed in the fixed unit; and a ball disposed between the fixed unit and the moving unit, in which the second magnet pressurizes the first magnet such that the ball is pressed between the fixed unit and the moving unit.

Description

Technical Field

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

[0002] A camera device is a device that captures a photo or video of an object and is installed in an optical device such as a smartphone, a drone, and a vehicle.

[0003] The camera device is equipped with an autofocus function that automatically adjusts the focus according to the distance of the object. When the lens moves along the optical axis direction relative to the image sensor, the autofocus function is executed, and the movement of the lens along the optical axis direction can be guided by a ball. At this time, the attractive force between the magnet and the yoke can be used to hold the ball between the fixed part and the moving part.

[0004] However, in this case, a problem may occur because the lens may roll due to the torque generated by the ball.

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

[0006] Technical Subject

[0007] A first embodiment of the present invention aims to provide a lens driving device that minimizes the torque generated by a ball.

[0008] A first embodiment of the present invention aims to provide a lens driving device that minimizes the rolling of a lens.

[0009] A first embodiment of the present invention aims to provide a lens driving device that reduces the size in the horizontal direction according to the thickness of the yoke.

[0010] A first embodiment of the present invention provides a lens driving device in which a ball can be positioned at various positions as needed, such as at the center of gravity of the moving unit or on the opposite side of the driving magnet.

[0011] A second embodiment of the present invention provides a lens driving device that minimizes the torque generated by a ball when the ball is arranged close to the optical axis.

[0012] A second embodiment of the present invention provides a lens driving device that minimizes the rolling, i.e., the rotation phenomenon, of a lens.

[0013] A second embodiment of the present invention provides a lens driving device that can arrange a ball at various positions as needed, such as at the center of gravity of the moving unit or on the opposite side of the driving magnet.

[0014] Technical Solution

[0015] A first embodiment of the present invention relates to a lens driving device, which includes: a fixing unit; a moving unit disposed in the fixing unit; a coil disposed in the fixing unit; a first magnet disposed in the moving unit and interacting with the coil; a second magnet disposed in the fixing unit; and a ball disposed between the fixing unit and the moving unit, wherein the second magnet presses the first magnet so that the ball is pressed between the fixing unit and the moving unit.

[0016] Preferably, but not necessarily, when an electric current is applied to the coil, the first magnet can move in the optical axis direction.

[0017] Preferably, but not necessarily, the coil can overlap with the first magnet in a first axis direction perpendicular to the optical axis, and the second magnet can overlap with the first magnet in the first axis direction.

[0018] Preferably, but not necessarily, the second magnet can include a first portion overlapping with the first magnet in the first axis direction and a second portion not overlapping with the first magnet in the first axis direction.

[0019] Preferably, but not necessarily, the second magnet can overlap with the coil in a second axis direction perpendicular to the optical axis direction and the first axis direction.

[0020] Preferably, but not necessarily, the second magnet can include a first unit magnet disposed on one side of the coil and a second unit magnet disposed on the other side of the coil.

[0021] Preferably, but not necessarily, the second magnet can be arranged to generate a repulsive force with the first magnet.

[0022] Preferably, but not necessarily, the first magnet can include a first magnet unit including an N pole and an S pole, a second magnet unit including an S pole and an N pole, and a neutral unit disposed between the first magnet unit and the second magnet.

[0023] Preferably, but not necessarily, the second magnet can include a first magnet unit including an N pole and an S pole, a second magnet unit including an S pole and an N pole, and a neutral unit disposed between the first magnet unit and the second magnet unit of the second magnet. The N pole of the first magnet unit of the second magnet can face the N pole of the first magnet unit of the first magnet, and the S pole of the second magnet unit of the second magnet can face the S pole of the second magnet unit of the first magnet.

[0024] Preferably, but not necessarily, in the optical axis direction, the length of the neutral unit of the second magnet can be longer than the length of the neutral unit of the first magnet.

[0025] Preferably, but not necessarily, when the first magnet moves maximally downward in the optical axis direction, the first boundary between the first magnet unit and the neutral unit of the first magnet may be set at the same height as the first boundary between the first magnet unit and the neutral unit of the second magnet or set lower than the first boundary between the first magnet unit and the neutral unit of the second magnet.

[0026] Preferably, but not necessarily, when the first magnet moves maximally along the optical axis direction, the second boundary between the second magnet unit and the neutral unit of the first magnet may be set at the same height as the second boundary between the second magnet unit and the neutral unit of the second magnet or set higher than the second boundary between the second magnet unit and the neutral unit of the second magnet.

[0027] Preferably, but not necessarily, in the optical axis direction, the length of the second magnet may be longer than the length of the first magnet, and in the optical axis direction, the length of the first magnet unit of the second magnet may be shorter than the length of the first magnet unit of the first magnet.

[0028] The lens driving device according to the first embodiment of the present invention may include: a fixing unit; a moving unit disposed within the fixing unit; a coil disposed in the fixing unit; a magnet disposed in the moving unit and interacting with the coil; and a ball disposed between the fixing unit and the moving unit, wherein the fixing unit includes a first sidewall on which the coil is disposed, a second sidewall disposed opposite to the first sidewall, and a protrusion disposed between and overlapping the first sidewall and the second sidewall along a first direction in which the first sidewall faces the second sidewall, and in the first direction, the moving unit includes a protrusion disposed between the first sidewall of the fixing unit and the protrusion, and the ball may be disposed between the protrusion of the moving unit and the protrusion of the fixing unit.

[0029] The camera device according to the 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.

[0030] The optical device according to the first embodiment of the present invention may include: a main body; a camera device disposed in the main body; and a display disposed in the main body and outputting one or more of videos and images captured by the camera device.

[0031] The lens driving device according to the second embodiment of the present invention may include: a fixing unit; a moving unit that is arranged along the optical axis direction and can move within the fixing unit; a coil that is arranged in the fixing unit; a first magnet that is arranged in the moving unit and is arranged to face the coil in a first direction perpendicular to the optical axis direction; a ball that is arranged between the fixing unit and the moving unit; and a second magnet that is arranged at the fixing unit and is repelled by the first magnet, wherein the coil may overlap with the second magnet in the first direction.

[0032] Preferably, but not necessarily, the second magnet may press the first magnet so that the ball is pressed between the fixing unit and the moving unit.

[0033] Preferably, but not necessarily, at least a part of the coil may be arranged between the first magnet and the second magnet in the first direction.

[0034] Preferably, but not necessarily, in the optical axis direction, the length of the second magnet may be longer than the length of the first magnet.

[0035] Preferably, but not necessarily, the upper surface of the second magnet may be arranged higher than the upper surface of the first magnet, and the lower surface of the second magnet may be arranged lower than the lower surface of the first magnet.

[0036] Preferably, but not necessarily, the fixing unit may include a base and a substrate arranged on the base, the coil may be arranged on the inner surface of the substrate, and the second magnet may be arranged on the outer surface of the substrate.

[0037] Preferably, but not necessarily, in the optical axis direction and a second direction perpendicular to the first direction, the length of the second magnet may be 15% to 40% of the length of the first magnet.

[0038] Preferably, but not necessarily, in the first direction, the thickness of the second magnet may be less than the thickness of the first magnet.

[0039] Preferably, but not necessarily, the second magnet may include a first magnet unit including an N pole and an S pole, a second magnet unit including an S pole and an N pole arranged on the first magnet unit, and a neutral unit arranged between the first magnet unit and the second magnet unit, and in the optical axis direction, the length of the second magnet unit may be 10% to 50% of the length of the neutral unit.

[0040] Preferably, but not necessarily, the first magnet may include a first magnet unit including an N pole and an S pole, a second magnet unit including an S pole and an N pole arranged on the first magnet unit, and a neutral unit arranged between the first magnet unit and the second magnet unit, and in the optical axis direction, the length of the neutral unit of the second magnet may be longer than the length of the neutral unit of the first magnet.

[0041] Preferably, but not necessarily, when a forward current is applied to the coil and the moving unit moves maximally upward in the optical axis direction, the upper end portion of the neutral unit of the first magnet is disposed at the same height as the upper end portion of the neutral unit of the second magnet or at a height lower than the upper end portion of the neutral unit of the second magnet, and when a reverse current is applied to the coil and the moving unit moves maximally downward in the optical axis direction, the lower end portion of the neutral unit of the first magnet may be disposed at the same height as the lower end portion of the neutral unit of the second magnet or at a height higher than the lower end portion of the neutral unit of the second magnet.

[0042] Preferably, but not necessarily, the ball may be spaced apart from the optical axis by a first distance, and at least a portion of the first magnet may be spaced apart from the optical axis by a distance greater than the first distance.

[0043] Preferably, but not necessarily, the distance between the ball and the optical axis may be the same as the distance between the second magnet and the optical axis.

[0044] The camera module according to the second 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.

[0045] The optical device according to the second embodiment of the present invention may include: a main body; a camera device disposed in the main body; and a display disposed in the main body and outputting one or more of images and videos captured by the camera device.

[0046] Advantageous Effects

[0047] The first embodiment of the present invention can minimize the torque generated by the ball. This minimizes the rolling or rotating phenomenon of the lens.

[0048] The first embodiment of the present invention can reduce the horizontal size of the lens driving device according to the thickness of the yoke.

[0049] The first embodiment of the present invention can allow the ball to be disposed at various positions as needed, such as the center of gravity of the moving unit or the opposite side of the driving magnet, thereby increasing the design freedom. More specifically, the ball may be disposed on a virtual plane passing through the center of gravity of the moving unit and parallel to the inner surface of the magnet.

[0050] According to the second embodiment of the present invention, when the ball is disposed close to the optical axis, the torque caused by the ball can be minimized. This minimizes the rolling or rotating phenomenon of the lens.

[0051] By the second embodiment of the present invention, the design freedom of the ball placement position can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 is a perspective view of a lens driving device according to a first embodiment of the present invention.

[0053] Figure 2 is from Figure 1 cross-sectional view taken along A-A.

[0054] Figure 3 is a cross-sectional perspective view of a lens driving device according to a first embodiment of the present invention.

[0055] Figure 4 is from Figure 1 cross-sectional view taken along B-B.

[0056] Figure 5 and Figure 6 are cross-sectional views of a lens driving device according to a first embodiment of the present invention.

[0057] Figure 7 is a cross-sectional view of a lens driving device according to a first embodiment of the present invention taken perpendicular to the optical axis direction.

[0058] Figure 8 is an exploded perspective view of a lens driving device according to a first embodiment of the present invention.

[0059] Figure 9 is in a direction different from Figure 8 exploded perspective view of the lens driving device.

[0060] Figure 10 is a perspective view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed.

[0061] Figure 11 is a plan view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed.

[0062] Figure 12 is a bottom perspective view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed.

[0063] Figure 13 is a partial perspective view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed.

[0064] Figure 14 is a perspective view showing a fixing unit and related configurations of a lens driving device according to a first embodiment of the present invention.

[0065] Figure 15 are views from different directions Figure 14 of a partial enlarged view.

[0066] Figure 16 is a perspective view showing a moving unit and related configurations of a lens driving device according to a first embodiment of the present invention.

[0067] Figure 17 is from a direction different from that of Figure 16 in terms of direction.

[0068] Figure 18 is a perspective view showing a magnet, a coil, and related configurations of a lens driving device according to a first embodiment of the present invention.

[0069] Figure 19 is Figure 18 a perspective view of, in which the drive magnet is omitted.

[0070] Figure 20 is Figure 18 a top view of.

[0071] Figure 21 is a view showing a drive magnet and a repulsive magnet of a lens driving device according to a first embodiment of the present invention. (a) is a view showing the drive magnet and the repulsive magnet when the drive magnet is in its initial state, i.e., before movement. (b) is a view showing the drive magnet and the repulsive magnet when the drive magnet moves upward to the maximum extent along the optical axis direction. (c) is a view showing the drive magnet and the repulsive magnet when the drive magnet moves downward to the maximum extent along the optical axis direction.

[0072] Figure 22 is a conceptual diagram showing pressing of a ball by a repulsive force between a drive magnet and a repulsive magnet in a first embodiment of the present invention.

[0073] Figures 23 to 25 is a view for explaining an autofocus operation of a lens driving device according to a first embodiment of the present invention. Figure 23 shows a cross-sectional view of a moving unit in an initial state where no current is applied to the coil. Figure 24 shows a cross-sectional view of a moving unit moving upward along the optical axis direction when a forward current is applied to the coil. Figure 25 shows a cross-sectional view of a moving unit moving downward along the optical axis direction when a reverse current is applied to the coil.

[0074] Figure 26 is an exploded perspective view of a camera device according to a first embodiment of the present invention.

[0075] Figure 27Is a perspective view of an optical device according to a first embodiment of the present invention.

[0076] Figure 28 Is a perspective view of an optical device according to a variant example.

[0077] Figure 29 Is a perspective view of a lens driving device according to a second embodiment of the present invention.

[0078] Figure 30 Is from Figure 29 The cross-sectional view observed from A-A in.

[0079] Figure 31 Is from Figure 29 The cross-sectional view observed from B-B in.

[0080] Figures 32 to 34 Is a cross-sectional view of a lens driving device according to a second embodiment of the present invention, taken at different parts and observed from different angles.

[0081] Figure 35 Is a cross-sectional view of a lens driving device according to a second embodiment of the present invention, taken perpendicular to the optical axis and observed from above.

[0082] Figure 36 Is an exploded perspective view of a lens driving device according to a second embodiment of the present invention.

[0083] Figure 37 Is in Figure 36 The exploded perspective view of the lens driving device in a direction different from the direction of.

[0084] Figure 38 Is a perspective view of a lens driving device according to a second embodiment of the present invention, in which the cover member is omitted.

[0085] Figure 39 Is a perspective view of a lens driving device according to a second embodiment of the present invention, in which the moving unit and related configurations are omitted.

[0086] Figure 40 Is observed from different angles Figure 39 The perspective view of.

[0087] Figure 41 Is Figure 40 The perspective view of, in which the balls, the substrate, and the repulsive magnets are omitted.

[0088] Figure 42 Is a perspective view showing the moving unit and related configurations of a lens driving device according to a second embodiment of the present invention.

[0089] Figure 43are viewed from different angles Figure 42 is a perspective view.

[0090] Figure 44 is a front view of the moving unit, driving unit, and repulsive magnet of the lens driving device according to the second embodiment of the present invention.

[0091] Figure 45 is a cross-sectional view showing the driving magnet and the repulsive magnet of the lens driving device according to the second embodiment of the present invention and their related configurations.

[0092] Figure 46 is a perspective view of the driving magnet and the repulsive magnet of the lens driving device according to the second embodiment of the present invention.

[0093] Figure 47 is a view showing the driving magnet and the repulsive magnet of the lens driving device according to the second embodiment of the present invention. (a) is a view showing the driving magnet and the repulsive magnet when the driving magnet is in its initial state, i.e., before movement. (b) is a view showing the driving magnet and the repulsive magnet when the driving magnet is moved upward to the maximum extent along the optical axis direction. (c) is a view showing the driving magnet and the repulsive magnet when the driving magnet is moved downward to the maximum extent along the optical axis direction.

[0094] Figure 48 is a cross-sectional view for comparing the distance between the optical axis and each component in the lens driving device according to the second embodiment of the present invention.

[0095] Figures 49 to 51 is a view for explaining the autofocus drive of the lens driving device according to the second embodiment of the present invention. Figure 49 is a cross-sectional view showing the state of the moving unit in the initial state when no current is applied to the coil. Figure 50 is a cross-sectional view showing the state in which the moving unit moves upward along the optical axis direction when a forward current is applied to the coil. Figure 51 is a cross-sectional view showing the state in which the moving unit moves downward along the optical axis direction when a reverse current is applied to the coil.

[0096] Figure 52 is an exploded perspective view of the camera device according to the second embodiment of the present invention.

[0097] Figure 53 is a perspective view of the optical device according to the second embodiment of the present invention.

[0098] Figure 54 is a perspective view of the optical device according to the variant example. Detailed Description

[0099] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0100] However, the present invention is not limited to the given exemplary embodiments described, but can be implemented in various different forms, and within the scope of the present invention, one or more components in the exemplary embodiments can be optionally combined or replaced between the embodiments.

[0101] In addition, unless specifically defined and described explicitly, the terms (including technical terms and scientific terms) used in the embodiments of the present invention should be interpreted as the meanings that would be understood by those of ordinary skill in the art to which the present invention pertains, and common terms such as those defined in a dictionary should be interpreted according to their contextual meanings in the relevant field.

[0102] In addition, the terms used in the embodiments of the present invention are intended to describe the embodiments and not to limit the present invention.

[0103] In this specification, unless the context otherwise requires, the singular form may also include the plural form, and a reference to "at least one (or more) of A and (or) B and C" may include any one or more combinations of A, B, and C that can be combined.

[0104] In addition, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the embodiments of the present invention. Such terms are only intended to distinguish one component from another, and are not intended to limit the nature or order or sequence of such components by such terms.

[0105] In addition, when a component is described as "connected", "coupled", or "attached" to another component, it may include cases where the component is directly "connected", "coupled", or "attached" to other components, and cases where the component is "connected", "coupled", or "attached" to another component located between the component and other components.

[0106] In addition, when described as formed or provided "above" or "below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or provided between the two components. In addition, when expressed as "above" or "below", it may include meanings both upward and downward with respect to a single component.

[0107] The "optical axis (see Figure 23 OA) direction" used below is defined as the optical axis direction of a lens and / or an image sensor coupled to a lens driving device.

[0108] The "vertical direction" used hereinafter may be parallel to or the same as the optical axis direction. The vertical direction may correspond to the "z-axis direction". The "horizontal direction" used hereinafter may be a direction perpendicular to the vertical direction. In other words, 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".

[0109] The "autofocus (AF) function" used hereinafter is defined as the following function: automatically adjusting the focus on an object by moving a 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 an image sensor. In addition, the "closed-loop autofocus (CLAF) control" is defined as: performing real-time feedback control on the position of the lens by detecting the distance between the image sensor and the lens to improve the accuracy of focus adjustment.

[0110] Hereinafter, one of the "x-axis" and the "y-axis" may be referred to as the "first axis", and the other may be referred to as the "second axis".

[0111] Hereinafter, one of the "drive magnet (310)" and the "repulsion magnet (500)" may be referred to as the "first magnet", and the other may be referred to as the "second magnet".

[0112] Hereinafter, one of the "lower magnet unit (311)" and the "upper magnet unit (312)" may be referred to as the "first magnet unit", and the other may be referred to as the "second magnet unit".

[0113] Hereinafter, one of the "lower magnet unit (510)" and the "upper magnet unit (520)" may be referred to as the "first magnet unit", and the other may be referred to as the "second magnet unit".

[0114] Hereinafter, one of the "drive magnet (1310)" and the "repulsion magnet (1500)" may be referred to as the "first magnet", and the other may be referred to as the "second magnet".

[0115] Hereinafter, one of the "lower magnet unit (1311)" and the "upper magnet unit (1312)" may be referred to as the "first magnet unit", and the other may be referred to as the "second magnet unit".

[0116] Hereinafter, one of the "lower magnet unit (1510)" and the "upper magnet unit (1520)" may be referred to as the "first magnet unit", and the other may be referred to as the "second magnet unit".

[0117] Hereinafter, the configuration of the lens driving device according to the first embodiment of the present invention will be described with reference to the accompanying drawings.

[0118] Figure 1Is a perspective view of a lens driving device according to a first embodiment of the present invention, Figure 2 Is from Figure 1 Cross-sectional view observed from A-A of Figure 3 Is a cross-sectional perspective view of a lens driving device according to a first embodiment of the present invention, Figure 4 Is from Figure 1 Cross-sectional view observed from B-B of Figure 5 And Figure 6 Are cross-sectional views of a lens driving device according to a first embodiment of the present invention, Figure 7 Is a cross-sectional view of a lens driving device according to a first embodiment of the present invention taken perpendicular to the optical axis direction, Figure 8 Is an exploded perspective view of a lens driving device according to a first embodiment of the present invention, Figure 9 Is in the direction different from Figure 8 Exploded perspective view of the lens driving device in a different direction, Figure 10 Is a perspective view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed, Figure 11 Is a plan view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed, Figure 12 Is a bottom perspective view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed, Figure 13 Is a partial perspective view of a lens driving device according to a first embodiment of the present invention, wherein the cover is removed, Figure 14 Is a perspective view showing the fixing unit and related configurations of a lens driving device according to a first embodiment of the present invention, Figure 15 Is observed from different directions Figure 14 Partial enlarged view of Figure 16 Is a perspective view showing the moving unit and related configurations of a lens driving device according to a first embodiment of the present invention, Figure 17 Is observed from a direction different from Figure 16 Perspective view in a different direction of Figure 18 Is a perspective view showing the magnet, coil and related configurations of a lens driving device according to a first embodiment of the present invention, Figure 19 Is Figure 18 Perspective view of Figure 20 Is Figure 18 Top view of Figure 21FIG. is a diagram showing a drive magnet and a repulsive magnet of a lens driving device according to a first embodiment of the present invention. (a) is a diagram showing the drive magnet and the repulsive magnet when the drive magnet is in its initial state, i.e., before movement. (b) is a diagram showing the drive magnet and the repulsive magnet when the drive magnet is moved upward to the maximum extent in the optical axis direction. (c) is a diagram showing the drive magnet and the repulsive magnet when the drive magnet is moved downward to the maximum extent in the optical axis direction, and Figure 22 is a conceptual diagram showing a ball being pressed by the repulsive force between the drive magnet and the repulsive magnet in the first embodiment of the present invention.

[0119] 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 unit (10) may include an AF module. The lens driving device (10) may include an AF actuator.

[0120] The lens driving device (10) may include a fixing unit (100). When the moving unit (200) moves, the fixing unit (100) may be a relatively fixed part. The moving unit (200) may move relative to the fixing unit (100).

[0121] The lens driving device (10) may include a base (110). The fixing unit (100) may include the base (110). The base (110) may be provided below the holder (210). The base (110) may be coupled to the cover (130). The holder (210) may be provided on the base (110). The holder (210) may be provided on the lower plate (111) of the base (110). The holder (210) may be provided inside the base (110). The holder (210) may be provided inside the side plate (112) of the base (110).

[0122] The base (110) may include a lower plate (111). The lower plate (111) of the base (110) may support the lower surface of the moving unit (200). The lower plate (111) of the base (110) may support the lower surface of the holder (210). The lower plate (111) of the base (110) may serve as a lower stopper for the moving unit (200). The lower plate (111) of the base (110) may serve as a lower stopper for the holder (210).

[0123] The base (110) may include side plates (112). The side plates (112) may be "side units". The side plates (112) may be "side walls". The side plates (112) of the base (110) may extend from the upper surface of the lower plate (111). The side plates (112) may include a plurality of side plates. The side plates (112) may include four side plates. The side plates (112) may include a first side plate and a second side plate disposed on opposite sides of each other and a third side plate and a fourth side plate disposed on opposite sides of each other.

[0124] The base (110) may include a column unit (113). The column unit (113) may extend from the upper surface of the lower plate (111). The column unit (113) may extend inward from the side plates (112). A ball (400) may be provided in the column unit (113). A groove (114) may be formed in the column unit (113), and the ball (400) is provided in the groove (114). The column unit (113) may be referred to as a "protrusion".

[0125] The fixing unit (100) may include a first side wall in which a coil (320) is provided, a second side wall disposed opposite to the first side wall, and a protrusion disposed between the first side wall and the second side wall in a first direction in which the first side wall faces the second side wall. At this time, the protrusion may be the column unit (113). In the first direction, the moving unit (200) may include a protrusion disposed between the first side wall of the fixing unit (100) and the protrusion. The ball (400) may be provided between the protrusion of the moving unit (200) and the protrusion of the fixing unit (100).

[0126] The base (110) may include a groove (114). The column unit (113) may include a groove (114). The groove (114) may be formed in the column unit (113). The groove (114) may be a "ball receiving groove". The ball (400) may be provided in the groove (114). The groove (114) may be in direct contact with the ball (400). The groove (114) may be oriented in the optical axis direction. The groove (114) may include a plurality of grooves. The groove (114) may include two grooves. The two grooves may be disposed parallel to each other.

[0127] The base (110) may include a groove (115). The groove (115) may be a "repulsion magnet receiving groove". A repulsion magnet (500) may be provided in the groove (115). The groove (115) may include a shape corresponding to the repulsion magnet (500). The groove (115) may be formed on the inner surface of the side plates (112) of the base (110). The groove (115) may include a plurality of grooves. The groove (115) may include two grooves.

[0128] The base (110) may include a stepped portion (116). The stepped portion (116) may be formed at the lower end of the outer side portion of the base (110). The stepped portion (116) may protrude from the outer side portion of the base (110). The side plate (132) of the cover (130) may be disposed on the stepped portion (116) of the base (110).

[0129] The base (110) may include a protrusion (117). The protrusion (117) may be a substrate-coupled protrusion. The protrusion (117) may be inserted into a hole in the substrate (120). The protrusion (117) may be coupled to the substrate (120). The protrusion (117) may fix the substrate (120). The protrusion (117) may be formed on the side plate (112). The protrusion (117) may be formed to protrude on the outer side portion of the base (110). The protrusion (117) may include a plurality of protrusions. The protrusion (117) may include two protrusions.

[0130] One of the "grooves (114)" and "grooves (115)" of the base (110) may be referred to as the "first groove", and the other may be referred to as the "second groove".

[0131] The lens driving device (10) may include a substrate (120). The fixing unit (100) may include a substrate (120). The substrate (120) may be disposed in the fixing unit (100). The substrate (120) may be disposed on the base (110). The substrate (120) may be disposed on the side plate (112) of the base (110). The substrate (120) may be disposed on the cover (130). The substrate (120) may be disposed on the side plate (132) of the cover (130). The substrate (120) may be disposed on the inner surface of the side plate (132) of the cover (130). The substrate (120) may be disposed on the outer surface of the side plate (132) of the cover (130). The substrate (120) may be disposed parallel to the optical axis. The substrate (120) may have a coil (320) and a sensor (330) disposed thereon. The substrate (120) may include a printed circuit board. The substrate (120) may include a flexible printed circuit board (FPCB).

[0132] The substrate (120) may include terminals (121). The terminals (121) may be formed at the lower end portion of the outer surface of the substrate (120). The terminals (121) of the substrate (120) may be coupled to the printed circuit board (50) of the camera device (10A). The terminals (121) of the substrate (120) may be electrically connected to the printed circuit board (50) of the camera device (10A). The terminals (121) of the substrate (120) may be soldered to the printed circuit board (50) of the camera device (10A). The terminals (121) may include a plurality of terminals. The terminals (121) may include five terminals. The terminals (121) may include terminals electrically connected to the sensor (330). The terminals (121) may include ground terminals for grounding. The terminals (121) may include terminals electrically connected to the coil (320).

[0133] The lens driving device (10) may include a cover member (130). The fixing unit (100) may include a cover member (130). The cover member (130) may be disposed on the base (110). The cover member (130) may be disposed on the base (110). The cover member (130) may be coupled to the base (110). The cover member (130) may be fixed to the base (110). The cover member (130) may accommodate the holder (210) therein. The cover member (130) may be a shielding member. The cover member (130) may be a shielding can.

[0134] The cover member (130) may include an upper plate (131). The upper plate (131) of the cover member (130) may serve as an upper stopper for the moving unit (200). The upper plate (131) of the cover member (130) may serve as an upper stopper for the holder (210). The upper plate (131) may be disposed on the moving unit (200). The upward movement of the moving unit (200) may be restricted by the contact of the moving unit (200) with the upper plate (131). The upper plate (131) may include a hole through which light passes.

[0135] The cover member (130) may include side plates (132). The side plates (132) may extend from the upper plate (131). The side plates (132) may be disposed on the base (110). The side plates (132) may be disposed in a stepped portion (116) protruding from the lower end portion of the outer side portion of the base (110). The side plates (132) may include a plurality of side plates. The side plates (132) may include four side plates. The side plates (132) may include a first side plate and a second side plate disposed on opposite sides of each other and a third side plate and a fourth side plate disposed on opposite sides of each other.

[0136] The lens driving device (10) may include a moving unit (200). The moving unit (200) may be disposed in the fixed unit (100). The moving unit (200) may be arranged within the fixed unit (100). The moving unit (200) may be disposed on the fixed unit (100). The moving unit (200) may be movably arranged on the fixed unit (100). The moving unit (200) may move relative to the fixed unit (100) by means of a driving unit (300). The moving unit (200) may move relative to the fixed unit (100) along the optical axis direction by means of the driving unit (300). The moving unit (200) may move along the optical axis direction. When the AF is operated, the moving unit (200) may move. The lens may be coupled to the moving unit (200).

[0137] The lens driving device (10) may include a holder (210). The moving unit (200) may include a holder (210). The holder (210) may be an "AF holder". The holder (210) may be a "bobbin". The holder (210) may be a "carrier". The holder (210) may be disposed within the base (110). The holder (210) may be disposed on the base (110). The holder (210) may be disposed within the cover (130). The holder (210) may be movably arranged. The holder (210) may be movably arranged along the optical axis direction.

[0138] The holder (210) may include a first portion (211). The first portion (211) may be disposed between the side plate (112) of the substrate (110) and the column unit (113). The balls (400) may be disposed in the first portion (211) of the holder (210). A groove (212) may be formed in the first portion (211) of the holder (210), and the balls (400) are disposed in the groove (212).

[0139] The holder (210) may include a groove (212). The groove (212) may be a "ball receiving groove". The balls (400) may be disposed in the groove (212). The groove (212) may be in direct contact with the balls (400). The groove (212) may be arranged along the optical axis direction. The groove (212) may guide the balls (400) to move along the optical axis direction. The groove (212) may include a plurality of grooves. The groove (212) may include two grooves. The two grooves may be arranged parallel to each other. The groove (212) of the holder (210) may be arranged opposite to the groove (114) of the base (110). The balls (400) may be disposed between the groove (212) of the holder (210) and the groove (114) of the base (110).

[0140] The retainer (210) may include a groove (213). The groove (213) may be a "drive magnet receiving groove". The groove (213) may be formed on the outer side portion of the retainer (210). The groove (213) may be formed as a concave shape on the side portion of the retainer (210). The drive magnet (310) may be disposed in the groove (213). The groove (213) may be formed in a shape corresponding to the drive magnet (310). The groove (213) may be recessed to a depth equal to the thickness of the drive magnet (310).

[0141] One of the "groove (212)" and the "groove (213)" of the retainer (210) may be referred to as the "first groove", and the other may be referred to as the "second groove".

[0142] The lens driving device (10) may include a driving unit (300). The driving unit (300) may move the moving unit (200) in the optical axis direction. The driving unit (300) may move the retainer (210) in the optical axis direction. The driving unit (300) may move the retainer (210) in the optical axis direction by electromagnetic force. The driving unit (300) may include a drive magnet (310) and a coil (320). The drive magnet (310) and the coil (320) may move the moving unit (200) in the optical axis direction.

[0143] The lens driving device (10) may include a driving magnet (310). The driving unit (300) may include a driving magnet (310). The driving magnet (310) may be provided on the moving unit (200). The driving magnet (310) may be provided on the holder (210). The driving magnet (310) may be fixed to the holder (210). The driving magnet (310) may be coupled to the holder (210). The driving magnet (310) may be adhesively coupled to the holder (210). The driving magnet (310) may be provided within the cover (130). The driving magnet (310) may be provided between the coil (320) and the holder (210). The driving magnet (310) may be provided inside the coil (320). The driving magnet (310) may overlap the coil (320) in a direction perpendicular to the optical axis. The driving magnet (310) may face the coil (320). The driving magnet (310) may face the coil (320). The driving magnet (310) may be provided at a position corresponding to the coil (320). The driving magnet (310) may interact with the coil (320). The driving magnet (310) may electromagnetically interact with the coil (320). The driving magnet (310) may move. The driving magnet (310) may be arranged so that it can move. When driving AF, the driving magnet (310) may move. The driving magnet (310) may move together with the holder (210). The driving magnet (310) may move in the optical axis direction. When a current is applied to the coil (320), the driving magnet (310) may move in the optical axis direction.

[0144] The driving magnet (310) may be a quadrupole magnet. The driving magnet (310) may include a quadrupole magnetic magnet. The driving magnet (310) may include a lower magnet unit (311) including an N pole and an S pole. The driving magnet (310) may include an upper magnet unit (312) including an S pole and an N pole. The driving magnet (310) may include a neutral unit (313) provided between the lower magnet unit (311) and the upper magnet unit (312).

[0145] The upper magnet unit (312) may be provided on the lower magnet unit (311). The lower magnet unit (311) and the upper magnet unit (312) may be arranged in the optical axis direction. The lower magnet unit (311) and the upper magnet unit (312) may be spaced apart in the optical axis direction. The neutral unit (313) may be provided between the lower magnet unit (311) and the upper magnet unit (312).

[0146] The lens driving device (10) may include a coil (320). The driving unit (300) may include a coil (320). The coil (320) may be disposed on the substrate (120). The coil (320) may be disposed on the inner surface of the substrate (120). The coil (320) may be disposed on the fixing unit (100). The coil (320) may be disposed on the base (110). The coil (320) may be disposed on the cover (130). The coil (320) may be disposed outside the driving magnet (310). The coil (320) may be disposed between the side plate (132) of the cover (130) and the driving magnet (310). The coil (320) may be fixed. Even when driving the AF, the coil (320) may remain fixed. The coil (320) may interact with the driving magnet (310). The coil (320) may face the driving magnet (310). The coil (320) may face the driving magnet (310). The coil (320) may be disposed at a position corresponding to the driving magnet (310). The coil (320) may overlap with the driving magnet (310) in a direction perpendicular to the optical axis. The coil (320) may overlap with the driving magnet (310) in the x-axis direction perpendicular to the optical axis.

[0147] The lens driving device (10) may include a sensor (330). The driving unit (300) may include a sensor (330). The sensor (330) may detect the driving magnet (310). The sensor (330) may be disposed on the substrate (120). The sensor (330) may be disposed within the coil (320). The sensor (330) may be a Hall sensor. The amount of movement or position of the driving magnet (310) detected by the sensor (330) may be used for feedback in the autofocus driving.

[0148] In an alternative embodiment, the sensor (330) may be a driver IC. The driver IC may include a Hall element for detecting the driving magnet (310). 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 (320). The driver IC may apply a current to the coil (320).

[0149] The lens driving device (10) may include a capacitor (340). The driving unit (300) may include a capacitor (340). The capacitor (340) may be disposed on the substrate (120). The capacitor (340) may be disposed within the coil (320). The capacitor (340) may be disposed close to the sensor (330). The capacitor (340) may be used to remove noise detected by the sensor (330).

[0150] The lens driving device (10) may include a guiding member. The guiding member may include balls (400). The guiding member may include a shaft. The guiding member may include pins. The guiding member may include a cylindrical member. The guiding member may guide the movement of the moving unit (200) relative to the fixed unit (100) in a specific direction. In a variant example, the balls (400) of the first embodiment of the present invention may be replaced with a shaft. In this case, the tilting phenomenon of the moving unit (200) can be prevented.

[0151] The lens driving device (10) may include balls (400). The balls (400) may guide the movement of the moving unit (200) relative to the fixed unit (100) in the optical axis direction. The balls (400) may guide the movement of the holder (210) relative to the base (110) in the optical axis direction. The balls (400) may be disposed between the fixed unit (100) and the moving unit (200). The balls (400) may be disposed between the base (110) and the holder (210). The balls (400) may be disposed between the base (110) and the holder (210) in the x direction. Alternatively, the balls (400) may be disposed between the base (110) and the holder (210) in the y direction. The balls (400) may be disposed in the groove (114) of the base (110). The balls (400) may be disposed in the groove (212) of the holder (210). The balls (400) may be spherical. The balls (400) may be formed of metal. Grease may be applied to the surface of the balls (400).

[0152] The distance between the balls (400) and the optical axis may be shorter than the distance between the repulsive magnet (500) and the optical axis. The distance between the balls (400) and the optical axis may be the same as the distance between the sensor (330) and the optical axis. As a variant example, the distance between the balls (400) and the optical axis may be the same as the distance between the coil (320) and the optical axis. The balls (400) may be disposed to be spaced apart from the side plate (120) of the base (110). When viewed from above, the side plate (120) of the base (110), the first portion (211) of the holder (210), the balls (400), the column unit (113) of the base (110), the holder (210), and the side plate (120) of the base (110) may be arranged in sequence on a virtual straight line.

[0153] The ball bearings (400) may include a plurality of ball bearings. The ball bearings (400) may include a plurality of unit ball bearings. The ball bearings (400) may be provided as a total of six ball bearings, three in one group and two groups. The ball bearings (400) may include a first ball bearing (410) and a second ball bearing (420). The first ball bearing (410) may be disposed on a virtual straight line connecting the optical axis and the first corner of the base (110). The second ball bearing (410) may be disposed on a virtual straight line connecting the optical axis and the second corner of the base (110). The first corner and the second corner of the base (110) may be provided adjacent to each other. The first ball bearing (410) may be disposed on one side of the drive magnet (310). The second ball bearing (420) may be disposed on the other side of the drive magnet (310).

[0154] When viewed from above, the distance between the first ball bearing (410) and the second ball bearing (420) may be greater than the width of the drive magnet (310).

[0155] The lens driving device (10) may include a repulsive magnet (500). The repulsive magnet (500) may be disposed in the fixed unit (100). The repulsive magnet (500) may be fixed to the fixed unit (100). The repulsive magnet (500) may be coupled to the fixed unit (100). The repulsive magnet (500) may be adhesively coupled to the fixed unit (100). The repulsive magnet (500) may be disposed on the base (110). The repulsive magnet (500) may be fixed to the base (110). The repulsive magnet (500) may be coupled to the base (110). The repulsive magnet (500) may be adhesively coupled to the base (110).

[0156] The repulsive magnet (500) may press the drive magnet (310) in the direction of the ball bearings (400). The repulsive magnet (500) may press the moving unit (200) in the direction of the ball bearings (400). The repulsive magnet (500) may press the holder (210) in the direction of the ball bearings (400). The repulsive magnet (500) may engage the ball bearings (400) between the fixed unit (100) and the moving unit (200) through interaction with the drive magnet (310). A repulsive force may be generated between the repulsive magnet (500) and the drive magnet (310). The repulsive magnet (500) may be arranged to generate a repulsive force with the drive magnet (310). The repulsive magnet (500) may push away the drive magnet (310). The repulsive magnet (500) may be formed such that the ball bearings (400) are engaged between the fixed unit (100) and the moving unit (200). The repulsive magnet (500) may pressurize the drive magnet (310) such that the ball bearings (400) are pressurized between the fixed unit (100) and the moving unit (200).

[0157] The repulsive magnet (500) can be spaced apart from the substrate (120). A gap can be formed between the repulsive magnet (500) and the substrate (120) (see the gap in Figure 20 ). As a variant example, the repulsive magnet (500) can be disposed on the substrate (120).

[0158] The repulsive magnet (500) can overlap with the drive magnet (310) in the x-axis direction. A part of the repulsive magnet (500) can overlap with the drive magnet (310) in the x-axis direction. At least a part of the repulsive magnet (500) can overlap with the drive magnet (310) in the x-axis direction. The drive magnet (310) can include a first part that overlaps with the drive magnet (310) in the x-axis direction and a second part that does not overlap with the drive magnet (310) in the x-axis direction. The second part can protrude more outward than the first part. The second part can protrude above and below the first part. As a variant example, the repulsive magnet (500) can completely overlap with the drive magnet (310) in the x-axis direction. In other words, the entire inner surface of the repulsive magnet (500) can completely overlap with the drive magnet (310) in the x-axis direction.

[0159] The repulsive magnet (500) can overlap with the coil (320) in the y-axis direction perpendicular to both the optical axis direction and the x-axis direction. The coil (320) can include a first part that overlaps with the repulsive magnet (500) in the y-axis direction and a second part that does not overlap. The coil (320) can be disposed between two repulsive magnets (500) in the y-axis direction. The coil (320) can be disposed between the first unit magnet (501) and the second unit magnet (502) in the y-axis direction. The repulsive magnet (500) can overlap with the sensor (330) in the y-axis direction. The sensor (330) can be disposed between two repulsive magnets (500) in the y-axis direction. The sensor (330) can be disposed between the first unit magnet (501) and the second unit magnet (502) in the y-axis direction.

[0160] The repulsive magnet (500) can include a plurality of magnets. The repulsive magnet (500) can include two magnets. The repulsive magnet (500) can include two magnets spaced apart from each other. The repulsive magnet (500) can include a first unit magnet (501). The repulsive magnet (500) can include a second unit magnet (502). The first unit magnet (501) can be disposed on one side of the coil (320). The second unit magnet (502) can be disposed on the other side of the coil (320).

[0161] The repulsive magnet (500) can be a quadrupole magnet. The repulsive magnet (500) can include a quadrupole magnetic magnet. The repulsive magnet (500) can include a lower magnet unit (510) that includes an N pole and an S pole. The repulsive magnet (500) can include an upper magnet unit (520) that includes an S pole and an N pole. The repulsive magnet (500) can include a neutral unit (530) disposed between the lower magnet unit (510) and the upper magnet unit (520). In the optical axis direction, the length of the neutral unit (530) can be longer than the length of the lower magnet unit (510). In the optical axis direction, the length of the neutral unit (530) can be longer than the length of the upper magnet unit (520). In the optical axis direction, the length of the neutral unit (530) can be longer than the sum of the lengths of the lower magnet unit (510) and the upper magnet unit (520). In the optical axis direction, the length of the neutral unit (530) can be equal to the sum of the lengths of the lower magnet unit (510) and the upper magnet unit (520). In the optical axis direction, the length of the neutral unit (530) can be less than the sum of the lengths of the lower magnet unit (510) and the upper magnet unit (520).

[0162] The upper magnet unit (520) can be disposed on the lower magnet unit (510). The lower magnet unit (510) and the upper magnet unit (520) can be disposed along the optical axis direction. The lower magnet unit (510) and the upper magnet unit (520) can be spaced apart in the optical axis direction. The neutral unit (530) can be disposed between the lower magnet unit (510) and the upper magnet unit (520).

[0163] The N pole of the lower magnet unit (510) of the repulsive magnet (500) can face the N pole of the lower magnet unit (311) of the drive magnet (310). The S pole of the upper magnet unit (520) of the repulsive magnet (500) can face the S pole of the upper magnet unit (312) of the drive magnet (310). In other words, the repulsive magnet (500) and the drive magnet (310) can be arranged such that the same magnetic poles face each other.

[0164] In the optical axis direction, the length of the neutral unit (530) of the repulsive magnet (500) can be longer than the length of the neutral unit (313) of the drive magnet (310) (see (a) in Figure 21 ). In the optical axis direction, the length of the repulsive magnet (500) can be longer than the length of the drive magnet (310). In the optical axis direction, the length of the lower magnet unit (510) of the repulsive magnet (500) can be shorter than the length of the lower magnet unit (311) of the drive magnet (310). In the optical axis direction, the length of the upper magnet unit (520) of the repulsive magnet (500) can be shorter than the length of the upper magnet unit (312) of the drive magnet (310).

[0165] When the drive magnet (310) is moved to the maximum extent to the lower side of the optical axis, the first boundary between the lower magnet unit (311) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310) is at 3 / 4 of the neutral unit (530) of the repulsion magnet (500). In other words, the first boundary can be positioned at the same height as the 75% point { Figure 21 of (c) in (c)} (see Figure 21 (c) in).

[0166] When the drive magnet (310) is moved to the maximum extent to the lower side of the optical axis, the first boundary between the lower magnet unit (311) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310) is equal to or lower in height than the first boundary between the lower magnet unit (510) of the repulsion magnet (500) and the neutral unit (530) of the repulsion magnet (500).

[0167] When the drive magnet (310) is moved to the maximum extent to the lower side of the optical axis, the first boundary between the lower magnet unit (510) of the repulsion magnet (500) and the neutral unit (530) of the repulsion magnet (500) is set at the same height as the first boundary between the lower magnet unit (311) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310).

[0168] When the drive magnet (310) is moved to the maximum extent to the lower side of the optical axis, the first boundary between the lower magnet unit (510) of the repulsion magnet (500) and the neutral unit (530) of the repulsion magnet (500) is positioned at a height lower than the first boundary between the lower magnet unit (311) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310).

[0169] When the drive magnet (310) is moved to the maximum extent to the upper side of the optical axis, the second boundary between the upper magnet unit (312) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310) is at one - quarter of the neutral unit (530) of the repulsion magnet (500). In other words, the second boundary can be set at the same height as Figure 21 the 25% point (b) in (b) of (see Figure 21 (b)).

[0170] When the drive magnet (310) is moved to the maximum extent to the upper side of the optical axis, the second boundary between the upper magnet unit (312) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310) is equal to or higher than the second boundary between the upper magnet unit (520) of the repulsion magnet (500) and the neutral unit (530) of the repulsion magnet (500).

[0171] When the drive magnet (310) is moved maximally upward along the optical axis, a second boundary between the upper magnet unit (520) of the repulsion magnet (500) and the neutral unit (530) of the repulsion magnet (500) is set at the same height as a second boundary between the upper magnet unit (312) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310).

[0172] When the drive magnet (310) is moved maximally upward along the optical axis, a second boundary between the upper magnet unit (520) of the repulsion magnet (500) and the neutral unit (530) of the repulsion magnet (500) is positioned at a height higher than a second boundary between the upper magnet unit (312) of the drive magnet (310) and the neutral unit (313) of the drive magnet (310).

[0173] In the first embodiment of the present invention, even when the drive magnet (310) moves through the above structure, a phenomenon in which the polarities of the drive magnet (310) and the repulsion magnet (500) are set opposite to each other can be prevented.

[0174] The autofocus (AF) operation of the lens driving device according to the first embodiment of the present invention will be described below with reference to the accompanying drawings.

[0175] Figures 23 to 25 is a diagram for explaining the autofocus operation of the lens driving device according to the first embodiment of the present invention. Figure 23 is a cross-sectional view of the moving unit in an initial state where no current is applied to the coil. Figure 24 shows a cross-sectional view of the moving unit moving upward in the optical axis direction when a forward current is applied to the coil. Figure 25 shows a cross-sectional view of the moving unit moving downward in the optical axis direction when a reverse current is applied to the coil.

[0176] As Figure 23 shown, when no current is applied to the coil (320), the moving unit (200) can be set at a position separated from both the upper plate (131) of the cover member (130) and the base (110) in the initial position.

[0177] When a forward current is applied to the coil (320), due to the electromagnetic interaction between the coil (320) and the drive magnet (310), the drive magnet (310) can move upward in the optical axis direction (see Figure 24In A) of this case, the retainer (210) can move upward along the optical axis direction together with the drive magnet (310). In addition, the lens can move upward along the optical axis direction together with the retainer (210). Therefore, the distance between the lens and the image sensor can be changed, and the focus of the image projected onto the image sensor through the lens can be adjusted.

[0178] When a reverse current is applied to the coil (320), due to the electromagnetic interaction between the coil (320) and the drive magnet (310), the drive magnet (310) can move downward along the optical axis direction (see Figure 25 In B) of this case, the retainer (210) can move downward to the lower side of the optical axis together with the drive magnet (310). In addition, the lens can move downward to the lower side of the optical axis together with the retainer (210). Therefore, the distance between the lens and the image sensor can be changed, and the focus of the image projected onto the image sensor through the lens can be adjusted.

[0179] At the same time, during the movement of the drive magnet (310), the sensor (330) can detect the magnetic field intensity of the drive magnet (310) and detect the amount of movement or position of the lens in the optical axis direction. The amount of movement or position of the lens in the optical axis direction detected by the sensor (330) can be used for autofocus feedback control.

[0180] A camera device according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

[0181] Figure 26 is an exploded perspective view of a camera device according to a first embodiment of the present invention.

[0182] The camera device (10A) can include a camera module.

[0183] The camera device (10A) can include a lens module (20). The lens module (20) can include at least one lens. The lens can be disposed at a position corresponding to the image sensor (60). The lens module (20) can include a lens and a lens barrel. The lens module (20) can be coupled to the retainer (210) of the lens driving device (10). The lens module (20) can be screwed and / or coupled to the retainer (210). The lens module (20) can move as a whole together with the retainer (210).

[0184] The camera device (10A) may include a filter (30). The filter (30) may be used to block light in a specific frequency band of the light passing through the lens module (20) from being incident on the image sensor (60). The filter (30) may be disposed parallel to the x-y plane. The filter (30) may be disposed between the lens module (20) and the image sensor (60). The filter (30) may be disposed on the sensor base (40). In a variant example, the filter (30) may be disposed on the base (110). The 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).

[0185] The camera device (10A) may include a sensor base (40). The sensor base (40) may be disposed between the lens driving device (10) and the printed circuit board (50). The sensor base (40) may include a protrusion (41) on which the filter (30) is disposed. An opening may be formed in a portion of the sensor base (40) where the filter (30) is disposed to allow the light passing through the filter (30) to enter the image sensor (60). An adhesive member may bond or couple the base (110) of the lens driving device (10) to the sensor base (40). The adhesive member may also be used to prevent foreign substances from entering the interior of the lens driving device (10). The adhesive member may include one or more of epoxy resin, thermosetting adhesive, and ultraviolet curable adhesive.

[0186] In a variant example, the sensor base (40) may be omitted. In this case, the filter (30) may be coupled to the base (110) of the lens driving device (10). The filter (30) may be coupled to the lower surface of the base (110) of the lens driving device (10). Additionally, in a variant example, the sensor holder (40) may be shaped to only protect the image sensor (60). In other words, the base (110) of the lens driving device (10) may be directly disposed on the printed circuit board (50). In this case, the sensor holder (40) may be disposed within the base (110). The base (110) may be shaped to enclose the sensor holder (40). The base (110) may include a leg unit which is an outer wall sitting on the printed circuit board (50).

[0187] 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 printed circuit board (50) may be provided with a lens driving device (10). A sensor base (40) may be provided 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). An image sensor (60) may be provided on the printed circuit board (50). The printed circuit board (50) may be equipped with various circuits, components, and a control unit to convert the image captured by the image sensor (60) into an electrical signal and transmit it to an external device.

[0188] The camera device (10A) may include an image sensor (60). The image sensor (60) may be configured to receive light incident through a lens and a filter (30) to form an image. The image sensor (60) may be mounted on the 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 mount technology (SMT). As another example, the image sensor (60) may be coupled to the printed circuit board (50) by flip chip technology. The image sensor (60) may be arranged such that the lens and the optical axis are aligned. In other words, 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 on the effective image area of the image sensor (60) into an electrical signal. The image sensor (60) may be any one of a CCD (charge coupled device), MOS (metal oxide semiconductor), CPD, and CID.

[0189] The camera device (10A) may include a motion sensor (70). The motion sensor (70) may be mounted on the printed circuit board (50). The motion sensor (70) may be electrically connected to the control unit (80) via a circuit pattern provided on the printed circuit board (50). The motion sensor (70) may output angular velocity information of the rotation caused by the motion of the camera device (10A). The motion sensor (70) may include a biaxial or triaxial gyro sensor or an angular velocity sensor.

[0190] The camera device (10A) may include a control unit (80). The control unit (80) may be provided on the printed circuit board (50). The control unit (80) may be electrically connected to the coil (310) of the lens driving device (10). The control unit (80) may individually control the direction, intensity, and amplitude of the current supplied to the coil (310). The control unit (80) may control the lens driving device (10) to perform an autofocus function and / or an image stabilization function. In addition, the control unit (80) may perform autofocus feedback control and / or image stabilization feedback control of the lens driving device (10).

[0191] The camera device (10A) may include a connector (90). The connector (90) may be electrically connected to a printed circuit board (50). The connector (90) may include a port for electrically connecting to an external device.

[0192] An optical device according to a first embodiment of the present invention will be described below with reference to the accompanying drawings.

[0193] Figure 27 is a perspective view of an optical device according to a first embodiment of the present invention. Figure 28 is a perspective view of an optical device according to a modified example.

[0194] The optical device (1) may include one or more of a mobile phone, a cellular phone, a portable terminal, a mobile terminal, a smart phone, a smart tablet, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and a navigation device. The optical device (1) may include any device for taking an image or a photograph.

[0195] The optical device (1) may include a body (20). The optical device (1) may include a camera device (10A). The camera device (10A) may be provided in the body (20). The camera device (10A) may photograph an object. The optical device (1) may include a display. The display may be provided on the body (20). The display may output one or more of an image and a video captured by the camera device (10A). The display may be provided on a first surface of the body (20). The camera device (10A) may be provided on one or more of a first surface of the body (20) and a second surface of the body opposite to the first surface. As Figure 27 shown, the camera device (10A) may be provided with three cameras in a vertical direction. As Figure 28 shown, the camera device (10A-1) may be provided with three cameras in a horizontal direction.

[0196] The configuration of a lens driving device according to a second embodiment of the present invention will be described below with reference to the accompanying drawings.

[0197] Figure 29 is a perspective view of a lens driving device according to a second embodiment of the present invention. Figure 30 is from Figure 29 a cross-sectional view taken along A-A in Figure 31 is from Figure 29 a cross-sectional view taken along B-B in Figures 32 to 34 is a cross-sectional view of a lens driving device according to a second embodiment of the present invention taken at different parts and viewed from different angles. Figure 35It is a cross-sectional view taken perpendicular to the optical axis and viewed from above of a lens driving device according to a second embodiment of the present invention. Figure 36 It is an exploded perspective view of a lens driving device according to a second embodiment of the present invention. Figure 37 It is in the direction different from Figure 36 an exploded perspective view of the lens driving device. Figure 38 It is a perspective view of a lens driving device according to a second embodiment of the present invention, in which the cover member is omitted. Figure 39 It is a perspective view of a lens driving device according to a second embodiment of the present invention, in which the moving unit and related configurations are omitted. Figure 40 It is a perspective view of Figure 39 viewed from different angles. Figure 41 It is Figure 40 a perspective view of, in which the balls, substrate, and repulsive magnet are omitted. Figure 42 It is a perspective view showing the moving unit and related configurations of a lens driving device according to a second embodiment of the present invention. Figure 43 It is a perspective view of Figure 42 viewed from different angles. Figure 44 It is a front view of the moving unit, driving unit, and repulsive magnet of a lens driving device according to a second embodiment of the present invention. Figure 45 It is a cross-sectional view showing the driving magnet and repulsive magnet of a lens driving device according to a second embodiment of the present invention and their related configurations. Figure 46 It is a perspective view of the driving magnet and repulsive magnet of a lens driving device according to a second embodiment of the present invention. Figure 47 It is a view showing the driving magnet and repulsive magnet of a lens driving device according to a second embodiment of the present invention. (a) is a view showing the driving magnet and repulsive magnet when the driving magnet is in its initial state, i.e., before moving. (b) is a view showing the driving magnet and repulsive magnet when the driving magnet moves maximally upward along the optical axis direction. (c) is a view showing the driving magnet and repulsive magnet when the driving magnet moves maximally downward along the optical axis direction. Figure 48 It is a cross-sectional view for comparing the distance between the optical axis and each component in a lens driving device according to a second embodiment of the present invention.

[0198] The lens driving device (1010) can be a voice coil motor (VCM). The lens driving device (1010) can be a lens driving motor. The lens driving device (1010) can be a lens driving actuator. The lens driving device (1010) can include an AF module. The lens driving device (1010) can include an AF actuator.

[0199] The lens driving device (1010) may include a fixing unit (1100). When the moving unit (1200) moves, the fixing unit (1100) may be a relatively fixed part. The moving unit (1200) may move relative to the fixing unit (1100).

[0200] The lens driving device (1010) may include a base (1110). The fixing unit (1100) may include the base (1110). The base (1110) may be disposed below the holder (1210). The base (1110) may be coupled to the cover member (1130). The holder (1210) may be disposed on the base (1110). The holder (1210) may be disposed on the lower plate (1111) of the base (1110). The holder (1210) may be disposed within the base (1110). The holder (1210) may be disposed within the side plates (1112) of the base (1110).

[0201] The base (1110) may include a lower plate (1111). The lower plate (1111) of the base (1110) may support the lower surface of the moving unit (1200). The lower plate (1111) of the base (1110) may support the lower surface of the holder (1210). The lower plate (1111) of the base (1110) may serve as the lower stopper of the moving unit (1200). The lower plate (1111) of the base (1110) may serve as the lower stopper of the holder (1210).

[0202] The base (1110) may include side plates (1112). The side plates (1112) may be "side units". The side plates (1112) may be "side walls". The side plates (1112) of the base (1110) may extend from the upper surface of the lower plate (1111). The side plates (1112) may include a plurality of side plates. The side plates (1112) may include four side plates. The side plates (1112) may include a first side plate to a fourth side plate. The side plates (1112) may include a first side plate and a second side plate disposed on opposite sides of each other and a third side plate and a fourth side plate disposed on opposite sides of each other.

[0203] The base (1110) may include a column (pillar) unit (1113). The column unit (1113) may extend from the upper surface of the lower plate (1111). The column unit (1113) may extend inward from the side plates (1112). A ball (1400) may be disposed in the column unit (1113). A groove (1114) may be formed in the column unit (1113), and the ball (1400) is disposed in the groove (1114). The column unit (1113) may be referred to as a "protrusion".

[0204] The fixing unit (1100) may include a first sidewall in which a coil (1320) is disposed, a second sidewall disposed opposite to the first sidewall, and a protrusion disposed between the first sidewall and the second sidewall in a first direction in which the first sidewall faces the second sidewall. In this case, the protrusion may be a column (1113). In the first direction, the moving unit (1200) may include a protrusion disposed between the first sidewall of the fixing unit (1100) and the protrusion. The ball (1400) may be disposed between the protrusion of the moving unit (1200) and the protrusion of the fixing unit (1100).

[0205] The base (1110) may include a groove (1114). The column unit (1113) may include a groove (1114). The groove (1114) may be formed in the column unit (1113). The groove (1114) may be a "ball receiving groove". The ball (1400) may be disposed in the groove (1114). The groove (1114) may be in direct contact with the ball (1400). The groove (1114) may be disposed along the optical axis direction. The groove (1114) may include a plurality of grooves. The groove (1114) may include two grooves. The two grooves may be disposed parallel to each other.

[0206] The base (1110) may include a groove (1115). The groove (1115) may be a "substrate and repulsion magnet receiving groove". The substrate (1120) may be disposed in the groove (1115). The repulsion magnet (1500) may be disposed in the groove (1115). The groove (1115) may include a shape corresponding to the substrate (1120). The groove (1115) may be formed on the outer surface of the side plate (1112) of the base (1110). The depth of the groove (1115) may be greater than the thickness of the repulsion magnet (1500).

[0207] The base (1110) may include a stepped portion (1116). The stepped portion (1116) may be formed at the lower end of the outer surface of the base (1110). The stepped portion (1116) may protrude from the outer surface of the base (1110). The side plate (1132) of the cover (1130) may be disposed in the stepped portion (1116) of the base (1110).

[0208] The base (1110) may include a protrusion (1117). The protrusion (1117) may be a "substrate coupling protrusion". The protrusion (1117) may be inserted into a hole of the substrate (1120). The protrusion (1117) may be coupled to the substrate (1120). The protrusion (1117) may fix the substrate (1120). The protrusion (1117) may be formed on the side plate (1112). The protrusion (1117) may be formed on the outer portion of the base (1110). The protrusion (1117) may include a plurality of protrusions. The protrusion (1117) may include two protrusions.

[0209] One of the "accommodating portions (1114)" and "accommodating portions (1115)" of the base (1110) may be referred to as a "first groove", and the other may be referred to as a "second groove".

[0210] The lens driving device (1010) may include a substrate (1120). The fixing unit (1100) may include a substrate (1120). The substrate (1120) may be disposed in the fixing unit (1100). The substrate (1120) may be disposed in the base (1110). The substrate (1120) may be disposed on the side plate (1112) of the base (1110). The substrate (1120) may be disposed on the outer surface of the side plate (1112) of the base (1110). The substrate (1120) may be disposed on the cover (1130). The substrate (1120) may be disposed on the side plate (1132) of the cover (1130). The substrate (1120) may be disposed on the inner surface of the side plate (1132) of the cover (1130). The substrate (1120) may be disposed on the outer surface of the side plate (1132) of the cover (1130). The substrate (1120) may be disposed parallel to the optical axis. The substrate (1120) may have a coil (1320) and a sensor (1330) disposed thereon. The substrate (1120) may have a repulsive magnet (1500) disposed thereon. The substrate (1120) may include a printed circuit board. The substrate (1120) may include a flexible printed circuit board (FPCB).

[0211] The substrate (1120) may include terminals (1121). The terminals (1121) may be formed at the lower end portion of the outer surface of the substrate (1120). The terminals (1121) of the substrate (1120) may be coupled to the printed circuit board (1050) of the camera device (1010A). The terminals (1121) of the substrate (1120) may be electrically connected to the printed circuit board (1050) of the camera device (1010A). The terminals (1121) of the substrate (1120) may be soldered to the printed circuit board (1050) of the camera device (1010A). The terminals (1121) may include a plurality of terminals. The terminals (1121) may include five terminals. The terminals (1121) may include terminals electrically connected to the sensor (1330). The terminals (1121) may include ground terminals for grounding. The terminals (1121) may include terminals electrically connected to the coil (1320). At least a portion of the terminals (1121) may be exposed to the outside.

[0212] The lens driving device (1010) may include a cover (1130). The fixing unit (1100) may include a cover (1130). The cover (1130) may be disposed on the base (1110). The cover (1130) may be disposed on the base (1110). The cover (1130) may be coupled to the base (1110). The cover (1130) may be fixed to the base (1110). The cover (1130) may accommodate the holder (1210) therein. The cover (1130) may be a shielding member. The cover (1130) may be a shielding can.

[0213] The cover (1130) may include an upper plate (1131). The upper plate (1131) of the cover (1130) may serve as an upper stopper for the moving part (1200). The upper plate (1131) of the cover (1130) may serve as an upper stopper for the holder (1210). The upper plate (1131) may be disposed on the moving unit (1200). The upward movement of the moving unit (1200) may be restricted by the contact between the moving unit (1200) and the upper plate (1131). The upper plate (1131) may include a hole through which light passes.

[0214] The cover (1130) may include side plates (1132). The side plates (1132) may extend from the upper plate (1131). The side plates (1132) may be disposed on the base (1110). The side plates (1132) may be disposed on a stepped portion (1116) protruding from the lower end portion of the outer side portion of the base (1110). The side plates (1132) may include a plurality of side plates. The side plates (1132) may include four side plates. The side plates (1132) may include a first side plate and a second side plate disposed opposite to each other and a third side plate and a fourth side plate disposed opposite to each other.

[0215] The lens driving device (1010) may include a moving unit (1200). The moving unit (1200) may be disposed in the fixed unit (1100). The moving unit (1200) may be disposed within the fixed unit (1100). The moving unit (1200) may be disposed on the fixed unit (1100). The moving unit (1200) may be movably disposed on the fixed unit (1100). The moving unit (1200) may move relative to the fixed unit (1100) by the driving unit (1300). The moving unit (1200) may move relative to the fixed unit (1100) in the optical axis direction by the driving unit (1300). The moving unit (1200) may be disposed in the fixed unit (1100) such that the moving unit (1200) can move in the optical axis direction. The moving unit (1200) may move in the optical axis direction. When the AF is actuated, the moving part (1200) may move. The lens may be coupled to the moving unit (1200).

[0216] The lens driving device (1010) may include a holder (1210). The moving unit (1200) may include a holder (1210). The holder (1210) may be an "AF holder". The holder (1210) may be a "bobbin". The holder (1210) may be a "carrier". The holder (1210) may be disposed in the base (1110). The holder (1210) may be disposed on the base (1110). The holder (1210) may be disposed in the cover (1130). The holder (1210) may be movably disposed. The holder (1210) may be movably disposed in the optical axis direction.

[0217] The holder (1210) may include a first part (1211). The first part (1211) may be disposed between the side plate (1112) of the base (1110) and the column unit (1113). The ball (1400) may be disposed in the first part (1211) of the holder (1210). The groove (1212) may be formed in the first part (1211) of the holder (1210) where the ball (1400) is disposed.

[0218] The retainer (1210) may include a groove (1212). The groove (1212) may be a "ball receiving groove". A ball (1400) may be disposed in the groove (1212). The groove (1212) may be in direct contact with the ball (1400). The groove (1212) may be oriented in the optical axis direction. The groove (1212) may guide the ball (1400) to move in the optical axis direction. The groove (1212) may include a plurality of grooves. The groove (1212) may include two grooves. The two grooves may be arranged parallel to each other. The groove (1212) of the retainer (1210) may be arranged to face the groove (1114) of the base (1110). The ball (1400) may be disposed between the groove (1212) of the retainer (1210) and the groove (1114) of the base (1110).

[0219] The retainer (1210) may include a groove (1213). The groove (1213) may be a "drive magnet receiving groove". The groove (1213) may be formed on the outer side portion of the retainer (1210). The groove (1213) may be formed in a concave manner on the side surface of the retainer (1210). A drive magnet (1310) may be disposed in the groove (1213). The groove (1213) may be formed in a shape corresponding to the drive magnet (1310). The groove (1213) may be recessed to a depth equal to the thickness of the drive magnet (1310).

[0220] One of the "groove (1212)" and the "groove (1213)" of the retainer (1210) may be referred to as the "first groove", and the other may be referred to as the "second groove".

[0221] The lens driving device (1010) may include a driving unit (1300). The driving unit (1300) may move the moving unit (1200) in the optical axis direction. The driving unit (1300) may move the retainer (1210) in the optical axis direction. The driving unit (1300) may move the retainer (1210) in the optical axis direction by electromagnetic force. The driving unit (1300) may include a drive magnet (1310) and a coil (1320). The drive magnet (1310) and the coil (1320) may move the moving unit (1200) in the optical axis direction.

[0222] The lens driving device (1010) may include a driving magnet (1310). The driving unit (1300) may include a driving magnet (1310). The driving magnet (1310) may be disposed on the moving unit (1200). The driving magnet (1310) may be disposed on the holder (1210). The driving magnet (1310) may be fixed to the holder (1210). The driving magnet (1310) may be coupled to the holder (1210). The driving magnet (1310) may be adhesively coupled to the holder (1210). The driving magnet (1310) may be disposed within the cover (1130). The driving magnet (1310) may be disposed between the coil (1320) and the holder (1210). The driving magnet (1310) may be disposed inside the coil (1320).

[0223] The driving magnet (1310) may overlap the coil (1320) in a direction perpendicular to the optical axis. The driving magnet (1310) may be arranged such that it overlaps the coil (1320) in the x-axis direction perpendicular to the optical axis. The driving magnet (1310) may look at the coil (1320) in the x-axis direction perpendicular to the optical axis. The driving magnet (1310) may be arranged to face the coil (1320). The driving magnet (1310) may be arranged such that the coil (1320) is oriented in the x-axis direction perpendicular to the optical axis. The driving magnet (1310) may face the coil (1320). The driving magnet (1310) may face the coil (1320). The driving magnet (1310) may be disposed in a position corresponding to the coil (1320). The driving magnet (1310) may interact with the coil (1320). The driving magnet (1310) may electromagnetically interact with the coil (1320). The driving magnet (1310) may move. The driving magnet (1310) may be arranged such that it can move. When the AF is operated, the driving magnet (1310) may move. The driving magnet (1310) may move together with the holder (1210). The driving magnet (1310) may move in the optical axis direction. When a current is applied to the coil (1320), the driving magnet (1310) may move in the optical axis direction.

[0224] The driving magnet (1310) may be a quadrupole magnet. The driving magnet (1310) may include a quadrupole magnet. The driving magnet (1310) may include a lower magnet unit (1311) that includes an N pole and an S pole. The driving magnet (1310) may include an upper magnet unit (1312) that includes an S pole and an N pole. The driving magnet (1310) may include a neutral unit (1313) disposed between the lower magnet unit (1311) and the upper magnet unit (1312).

[0225] The upper magnet unit (1312) can be disposed on the lower magnet unit (1311). The lower magnet unit (1311) and the upper magnet unit (1312) can be disposed along the optical axis direction. The lower magnet unit (1311) and the upper magnet unit (1312) can be spaced apart in the optical axis direction. The neutral unit (1313) can be disposed between the lower magnet unit (1311) and the upper magnet unit (1312).

[0226] The lens driving device (1010) can include a coil (1320). The driving unit (1300) can include a coil (1320). The coil (1320) can be disposed on the substrate (1120). The coil (1320) can be disposed on the inner surface of the substrate (1120). The coil (1320) can be disposed in the fixing unit (1100). The coil (1320) can be disposed in the base (1110). The coil (1320) can be disposed in the cover (1130). The coil (1320) can be disposed outside the driving magnet (1310). The coil (1320) can be disposed between the side plate (1132) of the cover (1130) and the driving magnet (1310). The coil (1320) can be fixed. Even when the AF is in operation, the coil (1320) can remain fixed. The coil (1320) can interact with the driving magnet (1310). The coil (1320) can face the driving magnet (1310). The coil (1320) can be disposed to be opposite to the driving magnet (1310). The coil (1320) can overlap the driving magnet (1310) in a direction perpendicular to the optical axis. The coil (1320) can overlap the driving magnet (1310) in the x-axis direction perpendicular to the optical axis direction.

[0227] The lens driving device (1010) can include a sensor (1330). The driving unit (1300) can include a sensor (1330). The sensor (1330) can detect the driving magnet (1310). The sensor (1330) can be disposed on the substrate (1120). The sensor (1330) can be disposed inside the coil (1320). The sensor (1330) can be a Hall sensor. The amount of movement or the position of the driving magnet (1310) detected by the sensor (1330) can be used for feedback of the autofocus driving.

[0228] In a variant example, the sensor (1330) can be a driver IC. The driver IC can include a Hall element for detecting the driving magnet (1310). The driver IC can include a sensing unit. The sensing unit can include a Hall IC. The driver IC can be electrically connected to the coil (1320). The driver IC can apply a current to the coil (1320).

[0229] The lens driving device (1010) may include a capacitor (1340). The driving unit (1300) may include a capacitor (1340). The capacitor (1340) may be disposed on the substrate (1120). The capacitor (1340) may be disposed within the coil (1320). The capacitor (1340) may be disposed close to the sensor (1330). The capacitor (1340) may be used to remove noise detected by the sensor (1330).

[0230] The lens driving device (1010) may include a guiding member. The guiding member may include balls (1400). The guiding member may include a shaft. The guiding member may include pins. The guiding member may include a cylindrical member. The guiding member may guide the movement of the moving unit (1200) relative to the fixed unit (1100) in a specific direction. In a variant example, the balls (1400) of the second embodiment of the present invention may be replaced with a shaft. In this case, tilting of the moving unit (1200) can be prevented.

[0231] The lens driving device (1010) may include balls (1400). The balls (1400) may guide the movement of the moving unit (1200) relative to the fixed unit (1100) in the optical axis direction. The balls (1400) may guide the movement of the base (1110) of the holder (1210) in the optical axis direction. The balls (1400) may be disposed between the fixed unit (1100) and the moving unit (1200). The balls (1400) may be disposed between the base (1110) and the holder (1210). The balls (1400) may be disposed between the base (1110) and the holder (1210) in the x direction. Alternatively, the balls (1400) may be disposed between the base (1110) and the holder (1210) in the y direction. The balls (1400) may be disposed in the groove (1114) of the base (1110). The balls (1400) may be disposed in the groove (1212) of the holder (1210). The balls (1400) may be spherical. The balls (1400) may be formed of metal. The balls (1400) may be non-magnetic. Grease may be applied to the surface of the balls (1400).

[0232] As Figure 48 shown, the distance (see A in Figure 48 ) between the ball (1400) and the optical axis (OA) may be equal to the distance (see D in Figure 48 ) between the repulsive magnet (1500) and the optical axis (OA). In a variant example, the distance (see A in Figure 48 ) between the ball (1400) and the optical axis (OA) may be shorter than the distance (see D in Figure 48in D) of [reference document]. In another variant example, the distance between the ball (1400) and the optical axis (OA) (see Figure 48 in A) can be longer than the distance between the repulsive magnet (1500) and the optical axis (OA) (see Figure 48 in D). The distance between the ball (1400) and the optical axis (OA) can be the shortest distance. The distance between the ball (1400) and the optical axis (OA) can be the distance in a direction perpendicular to the optical axis (OA). The distance between the repulsive magnet (1500) and the optical axis (OA) can be the shortest distance. The distance between the repulsive magnet (1500) and the optical axis (OA) can be the distance in a direction perpendicular to the optical axis (OA).

[0233] As Figure 48 shown, the distance between the ball (1400) and the optical axis (OA) (see Figure 48 in A) can be shorter than the distance between the end of the drive magnet (1310) and the optical axis (OA) (see Figure 48 in B). Additionally, as Figure 48 shown, the distance between the ball (1400) and the optical axis (OA) (see Figure 48 in A) can be longer than the distance between the center of the drive magnet (1310) and the optical axis (see Figure 48 in C).

[0234] The ball (1400) can be spaced apart from the optical axis by a first distance. At least a portion of the drive magnet (1310) can be spaced apart from the optical axis by a distance greater than the first distance. The drive magnet (1310) can include a first region that is spaced apart from the optical axis by a distance greater than the first distance. The drive magnet (1310) can include a second region that is spaced apart from the optical axis by a distance less than the first distance. The drive magnet (1310) can include a third region that is spaced apart from the optical axis by the first distance. At this time, the first region can be the end region of the drive magnet (1310), the second region can be the central region of the drive magnet (1310), and the third region can be the region between the first region and the second region of the drive magnet (1310). As a variant example, the distance between the ball (1400) and the optical axis can be less than the shortest distance between the drive magnet (1310) and the optical axis. In other words, the ball (1400) can be arranged closer to the optical axis than the drive magnet (1310).

[0235] When viewed from above, the side plate (1112) of the base (1110), the first part (1211) of the retainer (1210), the ball (1400), the column unit (1113) of the base (1110), the retainer (1210), and the side plate (1112) of the base (1110) can be arranged in sequence.

[0236] The ball bearings (1400) may include a plurality of ball bearings. The ball bearings (1400) may include a plurality of unit ball bearings. The ball bearings (1400) may be provided as a total of six ball bearings, three in one group and two groups. The ball bearings (1400) may include a first ball bearing (1410) and a second ball bearing (1420). The first ball bearing (1410) may be disposed on a virtual straight line connecting the optical axis and the first corner portion of the base (1110). The second ball bearing (1420) may be disposed on a virtual straight line connecting the optical axis and the second corner portion of the base (1110). The first corner portion and the second corner portion of the base (1110) may be provided adjacent to each other. The first ball bearing (1410) may be disposed on one side of the drive magnet (1310). The second ball bearing (1420) may be disposed on the other side of the drive magnet (1310).

[0237] When viewed from above, the distance between the first ball bearing (1410) and the second ball bearing (1420) may be greater than the width of the drive magnet (1310).

[0238] The lens driving device (1010) may include a repulsive magnet (1500). The repulsive magnet (1500) may be disposed in the fixing unit (1100). The repulsive magnet (1500) may be fixed to the fixing unit (1100). The repulsive magnet (1500) may be coupled to the fixing unit (1100). The repulsive magnet (1500) may be adhesively bonded to the fixing unit (1100). The repulsive magnet (1500) may be disposed on the base (1110). The repulsive magnet (1500) may be fixed to the base (1110). The repulsive magnet (1500) may be coupled to the base (1110). The repulsive magnet (1500) may be adhesively coupled to the base (1110). The repulsive magnet (1500) may be disposed on the substrate (1120). The repulsive magnet (1500) may be fixed on the substrate (1120). The repulsive magnet (1500) may be coupled to the substrate (1120). The repulsive magnet (1500) may be adhesively bonded to the substrate (1120). The repulsive magnet (1500) may be disposed on the outer surface of the substrate (1120). The repulsive magnet (1500) may be disposed in the cover (1130). The repulsive magnet (1500) may be fixed to the cover (1130). The repulsive magnet (1500) may be coupled to the cover (1130). The repulsive magnet (1500) may be adhesively bonded to the cover (1130). The repulsive magnet (1500) may be disposed in the stepped portion of the base (1110). The repulsive magnet (1500) may be disposed in a recessed groove formed on the side surface of the base (1110).

[0239] The repulsive magnet (1500) can press the drive magnet (1310) in the direction of the ball (1400). The repulsive magnet (1500) can press the moving unit (1200) in the direction of the ball (1400). The repulsive magnet (1500) can press the retainer (1210) in the direction of the ball (1400). The repulsive magnet (1500) can press the ball (1400) between the fixed unit (1100) and the moving unit (1200) through the interaction with the drive magnet (1310). The repulsive magnet (1500) can make the ball (1400) in close contact between the fixed unit (1100) and the moving unit (1200) through the interaction with the drive magnet (1310). The repulsive magnet (1500) can apply a repulsive force on the drive magnet (1310). The repulsive force can be generated between the repulsive magnet (1500) and the drive magnet (1310). The repulsive magnet (1500) can be set so that a repulsive force is generated on the drive magnet (1310). The repulsive magnet (1500) can push away the drive magnet (1310). The repulsive magnet (1500) can be formed such that the ball (1400) is disposed between the fixed unit (1100) and the moving unit (1200). The repulsive magnet (1500) can pressurize the drive magnet (1310) so that the ball (1400) is pressed between the fixed unit (1100) and the moving unit (1200).

[0240] The coil (1320) can overlap with the repulsive magnet (1500) in the x-axis direction. At least a part of the coil (1320) can be disposed between the drive magnet (1310) and the repulsive magnet (1500) in the x-axis direction. The distance between the upper end portion and the lower end portion of the coil (1320) can be 60% to 80% of the distance between the upper end portion and the lower end portion of the repulsive magnet (1500). The distance between the upper end portion and the lower end portion of the coil (1320) can be 65% to 75% of the distance between the upper end portion and the lower end portion of the repulsive magnet (1500).

[0241] In the optical axis direction, the length of the repulsive magnet (1500) can be longer than the length of the drive magnet (1310). The upper surface of the repulsive magnet (1500) can be set higher than the upper surface of the drive magnet (1310). In the initial position where no current is applied to the coil (1320), the upper surface of the repulsive magnet (1500) can be set higher than the upper surface of the drive magnet (1310). The lower surface of the repulsive magnet (1500) can be set lower than the lower surface of the drive magnet (1310). In the initial position where no current is applied to the coil (1320), the lower surface of the repulsive magnet (1500) can be set lower than the lower surface of the drive magnet (1310).

[0242] In the y-axis direction, the length of the repulsive magnet (1500) can be 15% to 40% of the driving magnet (1310). Alternatively, in the y-axis direction, the length of the repulsive magnet (1500) can be 10% to 50% of the driving magnet (1310).

[0243] In the x-axis direction, the thickness of the repulsive magnet (1500) can be less than the thickness of the driving magnet (1310). In the x-axis direction, the thickness of the repulsive magnet (1500) can be 70% to 90% of the thickness of the driving magnet (1310). In the x-axis direction, the thickness of the repulsive magnet (1500) can be 75% to 85% of the thickness of the driving magnet (1310). Alternatively, in the x-axis direction, the thickness of the repulsive magnet (1500) can be equal to the thickness of the driving magnet (1310). Alternatively, in the x-axis direction, the thickness of the repulsive magnet (1500) can be greater than the thickness of the driving magnet (1310).

[0244] In the optical axis direction, the length of the upper magnet unit (1520) of the repulsive magnet (1500) can be 10% to 50% of the length of the neutral unit (1530) of the repulsive magnet (1500). In the optical axis direction, the length of the upper magnet unit (1520) of the repulsive magnet (1500) can be 20% to 40% of the length of the neutral unit (1530) of the repulsive magnet (1500). If the length of the upper magnet unit (1520) is less than the above threshold, the ball pressing force will be insufficient due to weak magnetic force, and if the length of the upper magnet unit (1520) is greater than the above threshold, when the driving magnet (1310) moves, there may be a problem of attraction occurring in some areas.

[0245] When a forward current is applied to the coil (1320) and the moving unit (1200) moves to the upper side of the optical axis to the maximum extent, the upper end of the neutral unit (1313) of the driving magnet (1310) can be set at the same height as the upper end of the neutral unit (1530) of the repulsive magnet (1500). When a reverse current is applied to the coil (1320) and the moving unit (1200) moves to the lower side of the optical axis to the maximum extent, the lower end of the neutral unit (1313) of the driving magnet (1310) can be set at the same height as the lower end of the neutral unit (1530) of the repulsive magnet (1500).

[0246] The repulsive magnet (1500) can overlap with the drive magnet (1310) in the x-axis direction. A part of the repulsive magnet (1500) can overlap with the drive magnet (1310) in the x-axis direction. At least a part of the repulsive magnet (1500) can overlap with the drive magnet (1310) in the x-axis direction. The repulsive magnet (1500) can include a first part that overlaps with the drive magnet (1310) in the x-axis direction and a second part that does not overlap with the drive magnet (1310) in the x-axis direction. The second part can protrude more upward and downward than the first part.

[0247] The repulsive magnet (1500) can be a quadrupole magnet. The repulsive magnet (1500) can include a quadrupole magnetic magnet. The repulsive magnet (1500) can include a lower magnet unit (1510) that includes an N pole and an S pole. The repulsive magnet (1500) can include an upper magnet unit (1520) that includes an S pole and an N pole. The repulsive magnet (1500) can include a neutral unit (1530) disposed between the lower magnet unit (1510) and the upper magnet unit (1520). In the optical axis direction, the length of the neutral unit (1530) can be longer than the length of the lower magnet unit (1510). In the optical axis direction, the length of the neutral unit (1530) can be longer than the length of the upper magnet unit (1520). In the optical axis direction, the length of the neutral unit (1530) can be longer than the sum of the lengths of the lower magnet unit (1510) and the upper magnet unit (1520). In the optical axis direction, the length of the neutral unit (1530) can be equal to the sum of the lengths of the lower magnet unit (1510) and the upper magnet unit (1520). In the optical axis direction, the length of the neutral unit (1530) can be less than the sum of the lengths of the lower magnet unit (1510) and the upper magnet unit (1520).

[0248] The upper magnet unit (1520) can be disposed on the lower magnet unit (1510). The lower magnet unit (1510) and the upper magnet unit (1520) can be disposed along the optical axis direction. The lower magnet unit (1510) and the upper magnet unit (1520) can be spaced apart in the optical axis direction. The neutral unit (1530) can be disposed between the lower magnet unit (1510) and the upper magnet unit (1520).

[0249] The N pole of the lower magnet unit (1510) of the drive magnet (1500) can face the N pole of the lower magnet unit (1311) of the drive magnet (1310). The S pole of the upper magnet unit (1520) of the drive magnet (1500) can face the S pole of the upper magnet unit (1312) of the drive magnet (1310). In other words, the repulsive magnet (1500) and the drive magnet (1310) can be arranged such that the same poles face each other.

[0250] In the optical axis direction, the length of the lower magnet unit (1510) of the repulsive magnet (1500) can be shorter than the length of the lower magnet unit (1311) of the drive magnet (1310). The length of the lower magnet unit (1510) of the repulsive magnet (1500) can be 60% to 72% of the length of the lower magnet unit (1311) of the drive magnet (1310). The length of the lower magnet unit (1510) of the drive magnet (1500) can be 55% to 77% of the length of the lower magnet unit (1311) of the drive magnet (1310).

[0251] In the optical axis direction, the length of the upper magnet unit (1520) of the repulsive magnet (1500) can be shorter than the length of the upper magnet unit (1312) of the drive magnet (1310). The length of the upper magnet unit (1520) of the repulsive magnet (1500) can be 60% to 72% of the length of the upper magnet unit (1312) of the drive magnet (1310). The length of the upper magnet unit (1520) of the repulsive magnet (1500) can be 55% to 77% of the length of the upper magnet unit (1312) of the drive magnet (1310).

[0252] In the optical axis direction, the length of the neutral unit (1530) of the repulsive magnet (1500) can be longer than the length of the neutral unit (1313) of the drive magnet (1310) (see (a) in Figure 47 . With this structure, there will be no region where attraction occurs between the drive magnet (1310) and the repulsive magnet (1500) within the entire movement range of the drive magnet (1310) in the vertical direction. In the optical axis direction, the length of the repulsive magnet (1500) can be longer than the length of the drive magnet (1310). In the optical axis direction, the length of the lower magnet unit (1510) of the repulsive magnet (1500) can be shorter than the length of the lower magnet unit (1311) of the drive magnet (1310). In the optical axis direction, the length of the upper magnet unit (1520) of the repulsive magnet (1500) can be shorter than the length of the upper magnet unit (1312) of the drive magnet (1310).

[0253] In the optical axis direction, the length of the neutral unit (1313) of the drive magnet (1310) can be 20% to 30% of the length of the neutral unit (1530) of the repulsive magnet (1500). In the optical axis direction, the length of the neutral unit (1313) of the drive magnet (1310) can be 15% to 35% of the length of the neutral unit (1530) of the repulsive magnet (1500).

[0254] When the drive magnet (1310) is moved maximally downward in the optical axis direction, the first boundary between the lower magnet unit (1311) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1310) is at three - quarters of the neutral unit (1530) of the repulsion magnet (1500). In other words, the first boundary can be set at the same height as the 75% point (see Figure 47 in (c) of Figure 47 (c)).

[0255] As a variant example, when the drive magnet (1310) is moved maximally downward in the optical axis direction, the first boundary between the lower magnet unit (1311) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1310) is the first boundary between the lower magnet unit (1510) of the repulsion magnet (1500) and the neutral unit (1530) of the repulsion magnet (1500). It can be set at the same height as the first boundary.

[0256] In another variant example, when the drive magnet (1310) is moved maximally downward in the optical axis direction, the first boundary between the lower magnet unit (1311) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1310) is lower than the first boundary between the lower magnet unit (1510) of the repulsion magnet (1500) and the neutral unit (1530) of the repulsion magnet (1500). It can be set at a height lower than the first boundary.

[0257] In another variant example, when the drive magnet (1310) is moved as far as possible downward in the optical axis direction, the first boundary between the lower magnet unit (1311) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1310) is higher than the first boundary between the lower magnet unit (1510) of the repulsion magnet (1500) and the neutral unit (1530) of the repulsion magnet (1500).

[0258] When the drive magnet (1310) is moved as far as possible upward in the optical axis direction, the second boundary between the upper magnet unit (1312) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1313) is at one - quarter of the neutral unit (1530) of the repulsion magnet (1500). In other words, the second boundary can be positioned at the same height as the Figure 47 25% point (b) of Figure 47 (b).

[0259] As a variant example, when the drive magnet (1310) is moved maximally upward in the optical axis direction, the second boundary between the upper magnet unit (1312) of the drive magnet (131) and the neutral unit (1313) of the drive magnet (1310) is the same as the second boundary between the upper magnet unit (1520) of the repulsion magnet (1500) and the neutral unit (1530) of the repulsion magnet (1500).

[0260] In another variant example, when the drive magnet (1310) is moved maximally upward in the optical axis direction, the second boundary between the upper magnet unit (1312) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1310) is higher in height than the second boundary between the upper magnet unit (1520) of the repulsion magnet (1500) and the neutral unit (1530) of the repulsion magnet (1500).

[0261] In another variant example, when the drive magnet (1310) is moved as far as possible upward in the optical axis direction, the second boundary between the upper magnet unit (1312) of the drive magnet (1310) and the neutral unit (1313) of the drive magnet (1310) is lower in height than the second boundary between the upper magnet unit (1520) of the repulsion magnet (1500) and the neutral unit (1530) of the repulsion magnet (1500).

[0262] In the second embodiment of the present invention, even when the drive magnet (1310) moves through the above structure, it is possible to prevent the phenomenon that the polarities of the drive magnet (1310) and the repulsion magnet (1500) are set to be opposite to each other.

[0263] The autofocus (AF) operation of the lens driving device according to the second embodiment of the present invention will be described below with reference to the accompanying drawings.

[0264] Figures 49 to 51 is a diagram for explaining the autofocus drive of the lens driving device according to the second embodiment of the present invention. Figure 49 is a cross-sectional view showing the state of the moving unit in the initial state when no current is applied to the coil. Figure 50 is a cross-sectional view showing the state in which the moving unit moves upward in the optical axis direction when a forward current is applied to the coil. Figure 51 is a cross-sectional view showing the state in which the moving unit moves downward in the optical axis direction when a reverse current is applied to the coil.

[0265] As Figure 49 shown, in the initial position where no current is applied to the coil (1320), the moving unit (1200) can be set at a position separated from both the cover member (1130) and the upper plate (1131) of the base (1110).

[0266] When a forward current is applied to the coil (1320), due to the electromagnetic interaction between the coil (1320) and the drive magnet (1310), the drive magnet (1310) can move upward in the optical axis direction (see A in Figure 50 ). At this time, the retainer (1210) can move upward in the optical axis direction together with the drive magnet (1310). In addition, the lens can move upward in the optical axis direction together with the retainer (1210). Therefore, the distance between the lens and the image sensor can be changed, and the focus of the image projected through the lens onto the image sensor can be adjusted.

[0267] When a reverse current is applied to the coil (1320), due to the electromagnetic interaction between the coil (1320) and the drive magnet (1310), the drive magnet (1310) can move downward in the optical axis direction (see B in Figure 51 ). At this time, the retainer (1210) can move downward in the optical axis direction together with the drive magnet (1310). In addition, the lens can move downward in the optical axis direction together with the retainer (1210). Therefore, the distance between the lens and the image sensor can be changed, and the focus of the image projected through the lens onto the image sensor can be adjusted.

[0268] Meanwhile, during the movement of the drive magnet (1310), the sensor (1330) can detect the magnetic field strength of the drive magnet (1310), and detect the amount of movement or position of the lens in the optical axis direction. The amount of movement or position of the lens in the optical axis direction detected by the sensor (1330) can be used for autofocus feedback control.

[0269] A camera device according to a second embodiment of the present invention will be described with reference to the accompanying drawings.

[0270] Figure 52 is an exploded view of a camera device according to a second embodiment of the present invention.

[0271] The camera device (1010A) may include a camera module.

[0272] 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 position of the image sensor (1060). The lens module (1020) may include a lens and a lens barrel. The lens module (1020) may be coupled to the retainer (1210) of the lens driving device (1010). The lens module (1020) may be screwed and / or coupled to the retainer (1210). The lens module (1020) may move as a whole together with the retainer (1210).

[0273] The camera device (1010A) may include a filter (1030). The filter (1030) may be used to block light in a specific frequency band among the light passing through the lens module (1020) from being incident on the image sensor (1060). The filter (1030) may be disposed parallel to the x-y plane. The filter (1030) may be disposed between the lens module (1020) and the image sensor (1060). The filter (1030) may be disposed on the sensor base (1040). As a variant example, the filter (1030) may be disposed on the base (1110). The 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).

[0274] 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 protrusion (1041) in which the filter (1030) is disposed. In a portion of the sensor base (1040) where the filter (1030) is disposed, an opening may be formed to allow the light passing through the filter (1030) to enter the image sensor (1060). An adhesive member may be bonded or glued to the base (1110) of the lens driving device (1010) and the sensor base (1040). The adhesive member may also be used to prevent foreign matter from entering the interior of the lens driving device (1010). The adhesive member may include one or more of epoxy resin, thermosetting adhesive, and UV curable adhesive.

[0275] In a variant example, the sensor base (1040) may be omitted. In this case, the filter (1030) may be coupled to the base (1110) of the lens driving device (1010). The filter (1030) may be coupled to the lower surface of the base (1110) of the lens driving device (1010). Additionally, in a variant example, the sensor holder (1040) may be shaped to only protect the image sensor (1060). In other words, the base (1110) of the lens driving device (1010) may be directly disposed on the printed circuit board (1050). At this time, the sensor holder (1040) may be disposed within the base (1110). The base (1110) may be formed to wrap the sensor holder (1040). The base (1110) may include a leg unit that is an outer wall sitting on the printed circuit board (1050).

[0276] 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 printed circuit board (1050) may be provided with a lens driving device (1010). A sensor base (1040) may be provided 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). An image sensor (1060) may be provided on the printed circuit board (1050). The printed circuit board (1050) may be equipped with various circuits, components, and control units to convert an image captured by the image sensor (1060) into an electrical signal and transmit it to an external device.

[0277] The camera device (1010A) may include an image sensor (1060). The image sensor (1060) may be configured to receive light incident through a lens and a filter (1030) and 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 mount technology (SMT). As another example, the image sensor (1060) may be coupled to the printed circuit board (1050) by flip chip technology. The image sensor (1060) may be arranged such that the lens and the optical axis are aligned. In other words, the optical axis of the image sensor (1060) and the optical axis of the lens may be aligned. The image sensor (1060) may convert light irradiated on the effective image area of the image sensor (1060) into an electrical signal. The image sensor (1060) may be any one of a CCD (charge coupled device), MOS (metal oxide semiconductor), CPD, and CID.

[0278] 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 angular velocity information of rotation caused by the motion of the camera device (1010A). The motion sensor (1070) may include a biaxial or triaxial gyroscope sensor or an angular velocity sensor.

[0279] The camera device (1010A) may include a control unit (1080). The control unit (1080) may be provided on a printed circuit board (1050). The control unit (1080) may be electrically connected to a coil (1320) of the lens driving device (1010). The control unit (1080) may individually control the direction, intensity, and amplitude of the current supplied to the coil (1320). The control unit (1080) may control the lens driving device (1010) to perform an autofocus function and / or an image stabilization function. In addition, the control unit (1080) may perform autofocus feedback control and / or image stabilization feedback control of the lens driving device (1010).

[0280] 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.

[0281] The optical device according to the second embodiment of the present invention will be described below with reference to the accompanying drawings.

[0282] Figure 53 is a perspective view of the optical device according to the second embodiment of the present invention. Figure 54 is a perspective view of the optical device according to a variant example.

[0283] The optical device (1001) may include one or more of a mobile phone, a cellular phone, a portable terminal, a mobile terminal, a smart phone, a smart tablet, a portable smart device, a digital camera, a laptop computer, a digital broadcast terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), and a navigation device. The optical device (1001) may include any device for taking images or photos.

[0284] 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 provided in the body (1020). The camera device (1010A) may capture an object. The optical device (1001) may include a display. The display may be provided in the body (1020). The display may output one or more of the images and videos captured by the camera device (1010A). The display may be provided on a first surface of the body (1020). The camera device (1010A) may be provided on one or more of a first surface and a second surface opposite to the first surface of the body (1020). As Figure 53 shown, the camera device (1010A) may be three cameras arranged in a vertical direction. As Figure 54 shown, the camera device (1010A-1) may be three cameras arranged in a horizontal direction.

[0285] Although the first embodiment and the second embodiment of the present invention have been separately described above, some configurations of the first embodiment may be replaced by corresponding configurations of the second embodiment. In addition, some configurations of the second embodiment may be replaced by corresponding configurations of the first embodiment. In addition, the third embodiment of the present invention may include some configurations of the first embodiment and some configurations of the second embodiment. The first embodiment of the present invention may include the repulsive magnet (1500) of the second embodiment. Additionally, the second embodiment of the present invention may include the repulsive magnet (500) of the first embodiment.

[0286] The above embodiments of the present invention have been described with reference to the accompanying drawings, and those of ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or basic characteristics. Therefore, the above embodiments should be understood as illustrative rather than restrictive in all aspects.

Claims

1. A lens driving device, comprising: Fixing unit; Moving unit, the moving unit is arranged in the fixing unit; Coil, the coil is arranged on the fixing unit; First magnet, the first magnet is arranged on the moving unit and configured to interact with the coil; Second magnet, the second magnet is arranged on the fixing unit; And Ball, the ball is arranged between the fixing unit and the moving unit, wherein, the second magnet is configured to press the first magnet, so that the ball is pressed between the fixing unit and the moving unit.

2. The lens driving device according to claim 1, wherein, When a current is applied to the coil, the first magnet is configured to move along the optical axis direction.

3. The lens driving device according to claim 1, wherein, The coil overlaps with the first magnet in a first axis direction perpendicular to the optical axis direction, and wherein, the second magnet overlaps with the first magnet in the first axis direction.

4. The lens driving device according to claim 3, wherein, The second magnet includes a first part that overlaps with the first magnet in the first axis direction and a second part that does not overlap with the first magnet in the first axis direction.

5. The lens driving device according to claim 3, wherein, The second magnet overlaps with the coil in a second axis direction perpendicular to the optical axis direction and the first axis direction.

6. The lens driving device according to claim 1, wherein, The second magnet includes a first unit magnet arranged on one side of the coil and a second unit magnet arranged on the other side of the coil.

7. The lens driving device according to claim 1, wherein, The second magnet is arranged so as to generate a repulsive force with the first magnet.

8. The lens driving device according to claim 1, wherein, The first magnet includes a first magnet unit including an N pole and an S pole, a second magnet unit including an S pole and an N pole, and a neutral unit arranged between the first magnet unit and the second magnet unit.

9. The lens driving device according to claim 8, wherein, The second magnet includes a first magnet unit including an N pole and an S pole, a second magnet unit including an S pole and an N pole, and a neutral unit arranged between the first magnet unit and the second magnet unit of the second magnet, wherein, the N pole of the first magnet unit of the second magnet faces the N pole of the first magnet unit of the first magnet, and wherein, the S pole of the second magnet unit of the second magnet faces the S pole of the second magnet unit of the first magnet.

10. A lens driving device, comprising: Fixing unit; Moving unit, the moving unit is arranged in the fixing unit; Coil, the coil is arranged on the fixing unit; Magnet, the magnet is arranged on the moving unit and configured to interact with the coil; And Ball, the ball is arranged between the fixing unit and the moving unit, wherein, the fixing unit includes a first side wall provided with the coil, a second side wall arranged opposite to the first side wall, and a protrusion arranged between the first side wall and the second side wall and overlapping the first side wall and the second side wall in a first direction in which the first side wall faces the second side wall, wherein, in the first direction, the moving unit includes a protrusion arranged between the first side wall of the fixing unit and the protrusion, and wherein, the ball is arranged between the protrusion of the moving unit and the protrusion of the fixing unit.

Images