Lens driving apparatus, camera module and optical apparatus including the same

Abstract

An embodiment includes: a housing; a bobbin disposed in the housing; a magnet disposed on the bobbin; and a coil facing the magnet and moving the bobbin in a first direction parallel to the optical axis by interaction with the magnet. The magnet comprises a first magnet arranged on one side surface of the coil frame and a second magnet arranged on the other side surface of the coil frame; and the coils include a first coil facing the first magnet in a second direction perpendicular to the first direction and a second coil facing the second magnet in a third direction perpendicular to the first direction and the second direction, and independent driving signals are supplied to each of the first coil and the second coil.

Description

Technical Field

[0001] Various embodiments relate to lens-mounted mobile devices and camera modules and optical instruments that include lens-mounted mobile devices. Background Technology

[0002] The voice coil motor (VCM) technology used in conventional general-purpose camera modules is difficult to apply to miniature camera modules that aim to demonstrate low power consumption, and research related to low-power miniature camera modules has been actively carried out.

[0003] The demand for and production of camera-equipped electronic products, such as smartphones and cellular phones, are increasing. Cameras used in cellular phones are becoming increasingly higher in resolution and smaller in size, and consequently, the actuators used in cellular phones are also becoming smaller, larger in diameter, and more functional. To achieve high-resolution cellular phone cameras, improvements are needed in the performance of cellular phone cameras, as well as additional features such as autofocus, shutter stabilization, and zoom. Summary of the Invention

[0004] Technical issues

[0005] Various embodiments provide lens moving devices, camera devices, and optical instruments capable of correcting or compensating for tilt of the coil frame caused by static tilt or motion tilt.

[0006] Technical solution

[0007] A lens moving device according to an embodiment includes: a housing; a coil holder disposed within the housing; a magnet disposed on the coil holder; and a coil facing the magnet to move the coil holder along a first direction parallel to the optical axis through interaction with the magnet. The magnet includes a first magnet disposed on one side surface of the coil holder and a second magnet disposed on the other side surface of the coil holder. The coil includes a first coil facing the first magnet in a second direction perpendicular to the first direction and a second coil facing the second magnet in a third direction perpendicular to both the first and second directions. Independent drive signals are supplied to each of the first and second coils.

[0008] The lens moving device may include a spherical member disposed between the coil holder and the housing.

[0009] The lens moving device may include a position sensor configured to detect displacement of the coil holder. The position sensor may include a first sensor configured to detect a first magnet and a second sensor configured to detect a second magnet.

[0010] The first magnet may include a first magnet unit and a second magnet unit, and the second magnet may include a third magnet unit and a fourth magnet unit. The first coil may include a first coil unit facing the first magnet unit and a second coil unit facing the second magnet unit, and the second coil may include a third coil unit facing the third magnet unit and a fourth coil unit facing the fourth magnet unit. Independent drive signals may be supplied to each of the first to fourth coil units.

[0011] The lens moving device may include a position sensor configured to detect displacement of the coil holder. The position sensor may include a first sensor configured to detect a first magnet unit, a second sensor configured to detect a second magnet unit, a third sensor configured to detect a third magnet unit, and a fourth sensor configured to detect a fourth magnet unit.

[0012] Each of the first through fourth sensors may be a driver IC including a Hall sensor. The first sensor may supply a first drive signal to the first coil unit, the second sensor may supply a second drive signal to the second coil unit, the third sensor may supply a third drive signal to the third coil unit, and the fourth sensor may supply a fourth drive signal to the fourth coil unit.

[0013] The lens moving device may include a circuit board disposed on the housing and electrically connected to the first to fourth coil units, and a magnetic yoke disposed on the circuit board to generate an attractive force with a magnet.

[0014] Each of the first and second coil units may have an annular shape wound around a first axis parallel to the second direction, and each of the third and fourth coil units may have an annular shape wound around a second axis parallel to the third direction.

[0015] The first and second coil units can be positioned relative to each other with respect to a first reference line, which can be a straight line parallel to a second direction and passing through the optical axis. The third and fourth coil units can be positioned relative to each other with respect to a second reference line, which can be a straight line parallel to a third direction and passing through the optical axis.

[0016] The first and second coil units may be spaced apart from each other in a third direction, and the third and fourth coil units may be spaced apart from each other in a second direction.

[0017] The spherical component may include a first spherical component disposed between a side surface of the coil frame and the housing, and a second spherical component disposed between the other side surface of the coil frame and the housing.

[0018] Alternatively, the spherical component may include a first spherical component and a second spherical component, which are disposed between the side surface of the coil holder and the housing and spaced apart from each other.

[0019] According to another embodiment, a lens moving device includes: a housing; a coil holder disposed within the housing, the coil holder including a first side surface and a second side surface positioned opposite to each other, and a third side surface and a fourth side surface disposed between the first side surface and the second side surface and positioned opposite to each other; a spherical member disposed between the coil holder and the housing; a magnet including a first magnet unit and a second magnet unit disposed on the first side surface of the coil holder, and a third magnet unit and a fourth magnet unit disposed on the third side surface of the coil holder; a coil configured to move the coil holder along a first direction parallel to the optical axis through interaction with the magnet; and a position sensor configured to detect the displacement of the coil holder. The coil includes a first coil unit and a second coil unit disposed on a side portion of the housing facing the first side surface of the coil holder, and a third coil unit and a fourth coil unit disposed on another side portion of the housing facing the third side surface of the coil holder. Independent drive signals are supplied to each of the first to fourth coil units.

[0020] The position sensor may include: a first sensor configured to detect a first magnet unit and supply a first drive signal to a first coil unit; a second sensor configured to detect a second magnet unit and supply a second drive signal to a second coil unit; a third sensor configured to detect a third magnet unit and supply a third drive signal to a third coil unit; and a fourth sensor configured to detect a fourth magnet unit and supply a fourth drive signal to a fourth coil unit.

[0021] Beneficial effects

[0022] According to the implementation, by controlling or adjusting the independent drive signals supplied to the coil unit, rotation control or tilt control of the coil frame can be performed, and tilt of the coil frame caused by static tilt or motion tilt can be corrected or compensated.

[0023] According to the implementation method, even when the guide path of the coil frame or housing is not fully implemented according to the design specifications, the reliability of the AF drive can be prevented from being reduced, and the AF drive can be executed accurately.

[0024] In addition, according to the implementation method, the need for expensive devices required to verify whether the guide path meets the required specifications can be eliminated, the time and workload required to verify the specifications of the guide path can be reduced or eliminated, and the components can be managed effectively.

[0025] According to the implementation method, since AF driving force is generated on both side surfaces of the coil frame, the imbalance of AF driving force can be reduced and the occurrence of coil frame tilting can be suppressed.

[0026] According to the implementation method, since AF driving force is generated on both side surfaces of the coil frame, AF driving of heavy lenses can be easily achieved.

[0027] Furthermore, according to the implementation method, since AF driving force is generated on both side surfaces of the coil frame, the length of the magnet unit in the optical axis direction can be reduced, the length of the lens moving device in the optical axis direction can be reduced, and the height of the camera device can be reduced. Attached Figure Description

[0028] Figure 1 This is a perspective view of a lens-mounted device according to an embodiment.

[0029] Figure 2 yes Figure 1 The image shown is an exploded perspective view of the lens-mounted device.

[0030] Figure 3a It is an exploded view of the coil frame and magnet.

[0031] Figure 3b This is a view showing the connection between the coil frame and the magnet.

[0032] Figure 4a This is an exploded view of the housing and rolling elements.

[0033] Figure 4b This is a view showing the connection between the housing and the rolling elements.

[0034] Figure 5 It is a plan view of the housing, coil frame, rolling components, circuit board, and magnetic yoke.

[0035] Figure 6 This is a view showing the connection of the housing, coil, and position sensor.

[0036] Figure 7a It is along Figure 1 The cross-sectional view taken along direction AB in the middle.

[0037] Figure 7b It is along Figure 1 The cross-sectional view taken from the direction CD in the middle.

[0038] Figure 7c It is along Figure 1 The cross-sectional view taken in the direction EF.

[0039] Figure 8aAn implementation of the tilting of the coil frame and the driving force control for tilt correction is shown.

[0040] Figure 8b Another embodiment of the tilting of the coil frame and the drive force control for tilt correction is shown.

[0041] Figure 9a An arrangement of coils and position sensors according to another embodiment is shown.

[0042] Figure 9b yes Figure 9a A cross-sectional view of the embodiment shown.

[0043] Figure 9c An arrangement of coils and position sensors according to yet another embodiment is shown.

[0044] Figure 9d yes Figure 9c A cross-sectional view of the embodiment shown.

[0045] Figure 10 This is an exploded perspective view of a lens-mounted device according to another embodiment.

[0046] Figure 11 yes Figure 10 The diagram shows a plan view of the lens-mounted mobile device.

[0047] Figure 12 This is an exploded perspective view of the camera device according to the embodiment.

[0048] Figure 13 This is a perspective view of an optical instrument according to an embodiment.

[0049] Figure 14 yes Figure 13 The diagram shows the configuration of the optical instrument. Detailed Implementation

[0050] In the following, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0051] The technical spirit of this disclosure is not limited to the embodiments described, and can be implemented in various other forms. Furthermore, one or more components may be selectively combined and substituted for use without departing from the scope of the technical spirit of this disclosure.

[0052] Furthermore, unless specifically defined and explicitly described, the terms (including technical and scientific terms) used in the embodiments of this disclosure shall be interpreted as having meanings that are generally understood by one of ordinary skill in the art to which this disclosure pertains, and the meanings of commonly used terms, such as those defined in dictionaries, shall be interpreted in consideration of the context of the relevant art.

[0053] Furthermore, the terminology used in the embodiments of this disclosure is for the purpose of explaining the embodiments and is not intended to limit the disclosure. In this specification, unless specifically stated otherwise in the phrase, the singular form may also include the plural form, and where “at least one of A, B, or C (or one or more of them)” is stated, it may include one or more of all possible combinations of A, B, and C.

[0054] Furthermore, when describing components of embodiments of this disclosure, terms such as "first," "second," "A," "B," "(a)," and "(b)" may be used. Such terms are used only to distinguish one component from another, without specifying the nature, order, or procedure of the corresponding constituent elements.

[0055] Furthermore, when describing a component as "connected," "joined," or "engaged" to another component, this description can include not only direct "connection," "joining," or "engagement" to the other component, but also connection, joining, or engagement between the component and other components via another component. Additionally, when describing a component as being formed or disposed "above" or "below" another component, this description 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 disposed between the two components. Moreover, when expressed as "above" or "below," it can refer to both a downward and upward direction relative to a single element.

[0056] In the following text, the lens moving device may be alternatively referred to as a lens moving unit, voice coil motor (VCM), actuator, or lens moving device. In the following text, "coil" may be alternatively referred to as a coil unit.

[0057] Additionally, in the following description, "terminal" may be alternatively referred to as pad, electrode, conductive layer, or bonding unit.

[0058] For ease of description, a Cartesian coordinate system (x, y, z) will be used to describe the lens device according to the embodiment. However, the embodiment is not limited to this, and other coordinate systems may be used to describe the embodiment. In the various figures, the x-axis and y-axis may be directions perpendicular to the z-axis, which is the optical axis direction. The z-axis direction, which is the optical axis (OA) direction, or a direction parallel to the optical axis, may be referred to as the "first direction." The x-axis direction may be referred to as the "second direction," and the y-axis direction may be referred to as the "third direction." The optical axis may be the optical axis of the lens module (or lens). Additionally, the optical axis direction may be a direction perpendicular to the imaging area (or active area) of the image sensor.

[0059] The "autofocus" function is the function of automatically focusing an image of an object onto the surface of an image sensor. According to an embodiment, the lens mobile device can perform the autofocus operation by moving a coil holder connected to the lens module along a first direction.

[0060] Figure 1 This is a perspective view of the lens moving device 100 according to the embodiment. Figure 2 yes Figure 1 An exploded perspective view of the lens moving device 100 shown. Figure 3a This is an exploded view of the coil frame 110 and the magnet 130. Figure 3b This is a connection view of the coil holder 110 and the magnet 130. Figure 4a This is an exploded view of the housing 140 and the rolling element 150. Figure 4b This is a connection view of the housing 140 and the rolling member 150. Figure 5 This is a plan view of the housing 140, coil frame 110, rolling member 150, circuit board 190, and magnetic yoke 80. Figure 6 This is a connection view of the housing 140, coil 120, and position sensor 70. Figure 7a It is along Figure 1 A cross-sectional view taken along direction AB in the middle. Figure 7b It is along Figure 1 A cross-sectional view taken from direction CD in the middle. Figure 7c It is along Figure 1 The cross-sectional view taken in the direction EF.

[0061] Reference Figures 1 to 7c The lens moving device 100 may include: a housing 140; a coil holder 110 disposed in the housing 140; a magnet 130 disposed on the coil holder 110; and a coil 120 disposed on the housing 140 and configured to move the coil holder 110 along a first direction by interaction with the magnet 130.

[0062] The magnet 130 may include a first magnet 130-1 disposed on one side surface 110A of the coil frame 110 and a second magnet 130-2 disposed on the other side surface 110C of the coil frame 110.

[0063] The first magnet 130-1 may include multiple magnet units (e.g., 31 and 32). The second magnet 130-2 may include multiple magnet units (e.g., 33 and 34). For example, each of the first magnet 130-1 and the second magnet 130-2 may include two or more magnet units.

[0064] Coil 120 may include a first coil 120-1 and a second coil 120-2. The first coil 120-1 is disposed on a side portion 141A of the housing 140 facing one side surface 110A of the coil holder 110, and the second coil 120-2 is disposed on a side portion 141B of the housing 140 facing the other side surface 110C of the coil holder 110. The first coil 120-1 may face or overlap with the first magnet 130-1 in a second direction, and the second coil 120-2 may face or overlap with the second magnet 130-2 in a third direction. Independent drive signals may be supplied to each of the first coil 120-1 and the second coil 120-2.

[0065] For example, the first coil 120-1 may include multiple coil units (e.g., 20A and 20B) facing multiple magnet units (e.g., 31 and 32). The second coil 120-2 may include multiple coil units (e.g., 20C and 20D) facing multiple magnet units (e.g., 33 and 34). For example, each of the first coil 120-1 and the second coil 120-2 may include two or more coil units.

[0066] Independent drive signals can be supplied to each of the coil units (e.g., 20A and 20B) included in the first coil 120-1. Additionally, independent drive signals can be supplied to each of the coil units 20C and 20D included in the first coil 120-2, respectively.

[0067] The lens moving device 100 may include a support member configured to support the coil holder 110 relative to the housing 140. For example, the support member may be a rolling member 150. In another embodiment, the support member may be an elastic member, such as a spring, leaf spring, coil spring, or suspension wire.

[0068] The lens moving device 100 may include a position sensor 70 for AF feedback drive. Additionally, the lens moving device 100 may include a circuit board 190 electrically connected to the position sensor 70 and configured to supply drive signals to and receive outputs from the position sensor 170.

[0069] Additionally, the lens moving device 100 may also include a cover member (not shown) configured to accommodate the housing 140 and the coil holder 110. The cover member may include an upper plate and side plates extending downward from the upper plate. The cover member may include an opening or hollow portion formed in the upper plate of the cover member to correspond to, face, or overlap with the coil holder 110. The side plates of the cover member may include side plates corresponding to or facing a side portion of the housing.

[0070] Additionally, the lens moving device 100 may include a magnetic yoke 80 configured to stably support the AF moving unit, such as the coil holder 110.

[0071] The coil holder 110 can be positioned inside the housing 140 and is movable along the optical axis. The coil holder 110 can be coupled to a lens module or configured to enable mounting of a lens module. The lens module may include at least one of one or more lenses or lens barrels. The coil holder 110 may alternatively be referred to as a "lens holder," "carrier," "first carrier," or "lens support."

[0072] Due to the electromagnetic interaction between coil 120 and magnet 130, the AF moving unit can move along a first direction. The AF moving unit may include coil holder 110. For example, the AF moving unit may include coil holder 110 and components coupled to or mounted on coil holder 110. For example, the AF moving unit may include coil holder 110 and magnet 130. Alternatively, in a camera device, the AF moving unit may include lens module 400 coupled to or mounted on coil holder 110.

[0073] The coil holder 110 may include an aperture 101 in which a lens or lens barrel is attached. For example, the aperture 101 of the coil holder 110 may be a through hole and may have a circular, elliptical, or polygonal shape. However, this disclosure is not limited thereto.

[0074] although Figure 3a Although not shown, the coil holder 110 may include at least one first stop portion disposed on the upper surface of the coil holder 110. For example, the first stop portion may be a structure that protrudes from the upper surface of the coil holder 110 along the optical axis or upward, and can prevent the upper surface of the coil holder 110 from directly colliding with the inner surface of the upper plate of the cover member 300. In addition, the coil holder 110 may include at least one second stop portion disposed on the lower surface of the coil holder 110.

[0075] The coil frame 110 may include a plurality of side surfaces (or outer surfaces) or a plurality of side portions 11A to 11D. The coil frame 110 may include corners or corner portions, each of which is positioned between two adjacent side portions of the coil frame 110.

[0076] For example, the coil holder 110 may include a first side surface 110A and a second side surface 110B positioned opposite to each other with respect to the optical axis, and may include a third side surface 110C and a fourth side surface 110D positioned between the first side surface 110A and the second side surface 110B and positioned opposite to each other with respect to the optical axis.

[0077] For example, the first side surface 110A and the second side surface 110B may be positioned facing each other or opposite each other in a second direction perpendicular to the first direction. For example, the third side surface 110C and the fourth side surface 110D may be positioned facing each other or opposite each other in a third direction perpendicular to each of the first and second directions.

[0078] The coil holder 110 may include a first mounting portion 105A in which a first magnet 130-1 is disposed or seated, and a second mounting portion 105B in which a second magnet 130-2 is disposed or seated. Each of the first mounting portion 105A and the second mounting portion 105B may be a recess. Each of the first mounting portion 105A and the second mounting portion 105B may have a shape corresponding to or matching one of the corresponding first magnets 130-1 and 130-2.

[0079] For example, the first seating portion 105A may be a recessed portion in the first side surface 110A (or the first side portion) of the coil holder 110. For example, the second seating portion 105B may be a recessed portion in the third side surface 110C (or the third side portion) of the coil holder 110.

[0080] Each of the first seating portion 105A and the second seating portion 105B may include an opening leading to at least one of the upper or lower surfaces of the coil holder 110. In another embodiment, the upper or lower portion of each of the first seating portion 105A and the second seating portion 105B may be closed and not leading to the upper or lower surface of the coil holder 110.

[0081] The coil holder 110 may include at least one avoidance portion 23 to avoid spatial interference with at least one protrusion 45 of the housing 140. The avoidance portion 23 may alternatively be referred to as a recessed portion. The avoidance portion 23 of the coil holder 110 may have a recessed shape. The avoidance portion 23 may be in the form of a recessed portion in the outer surface of the coil holder 110.

[0082] The avoidance portion 23 may be formed in at least one of the side surfaces 110A to 110D of the coil holder 110. For example, the avoidance portion 23 may include a first avoidance portion 23A formed in a second side surface 110B of the coil holder 110 and a second avoidance portion 23B formed in a fourth side surface 110D of the coil holder 110. The avoidance portion 23 of the coil holder 110 may be used together with the protrusion 45 of the housing 140, which will be described later, to suppress rotation of the coil holder 110.

[0083] The coil holder 110 may include at least one protrusion 22 disposed on a side surface of the coil holder 110. The protrusion 22 may be disposed on at least one of the first side surfaces 110A to the fourth side surface 110D of the coil holder 110. For example, the protrusion 22 may protrude relative to the avoidance portion 23. The coil holder 110 may include a first protrusion 22A formed on a second side surface 110B of the coil holder 110 and a second protrusion 22B formed on a fourth side surface 110D of the coil holder 110. The protrusion 23 of the coil holder 110 may be used together with the avoidance portion 48 of the housing 140, which will be described later, to suppress rotation of the coil holder 110. The avoidance portion 115 of the coil holder 110 and the protrusion 45 of the housing 140, or the protrusion 22 of the coil holder 110 and the avoidance portion 48 of the housing 140, may suppress or prevent the coil holder 110 from rotating beyond a desired angle due to external impact. Therefore, the impact between the coil frame 110 and the housing 140 caused by external impacts can be reduced, the generation of foreign objects or particles caused by impacts or collisions can be reduced, and deformation or damage to the coil frame 110 and / or housing 140 can be prevented. In addition, the protruding portion 45 of the housing 140 or the protruding portion 22 of the coil frame 110 can be used as a stop in a direction perpendicular to the optical axis.

[0084] The coil holder 110 may include at least one recess 117 in which at least a portion of the rolling member 150 is disposed or received. The recess 117 may alternatively be referred to as a "receiving recess," "guide recess," "guide portion," or "guide track." At least a portion of the rolling member 150 may contact the recess 117. The recess 117 may be recessed in a side surface of the coil holder 110.

[0085] The recess 117 may be provided on at least one of the first side surfaces 110A to the fourth side surface 110D of the coil holder 110. The recess 117 may include a plurality of recesses formed in different side surfaces of the coil holder 110. In another embodiment, the recess 117 may include a plurality of recesses formed in one side surface of the coil holder 110.

[0086] For example, the recess 117 may include a first recess 117A formed in a first side surface 110A of the coil holder 110 and a second recess 117B formed in a second side surface 117B of the coil holder 110. The first recess 117A may be positioned adjacent to a corner of the coil holder 110. The second recess 117B may be positioned adjacent to another corner of the coil holder 110 that is diagonally opposite to that corner.

[0087] For example, the first recess 117A can be positioned adjacent to the first magnet 130-1, and the second recess 117B can be positioned adjacent to the first magnet 130-2.

[0088] For example, recess 117 may include an opening leading to the upper surface of coil holder 110. Alternatively, for example, the lower portion of recess 117 may include an opening leading to the lower surface of coil holder 110. In another embodiment, recess 117 may not lead to either the upper or lower surface of coil holder 110.

[0089] For example, the recess 117 may be formed to extend along the optical axis. For example, the recess 117 may extend from the upper surface to the lower surface of the coil holder 110. In another embodiment, the recess 117 may extend along the optical axis to be formed between the upper and lower surfaces of the coil holder 110. For example, the recess 117 may include two or more side surfaces. For example, the recess 117 may include an inner surface having at least one stepped portion.

[0090] For example, when viewed from above, the recess 117 may have a polygonal shape (e.g., a triangular shape, a quadrilateral shape, or a pentagonal shape). Alternatively, in another embodiment, the recess 117 may have a V-shaped or U-shaped shape.

[0091] The magnet 130 can be disposed on the coil holder 110. The magnet 130 may include a first magnet 130-1 disposed on a first side surface 110A of the coil holder 110 and a second magnet 130-2 disposed on a third side surface 110C of the coil holder 110.

[0092] The first magnet 130-1 may include multiple magnet units. The second magnet 130-2 may include multiple magnet units.

[0093] For example, the first magnet 130-1 may include a first magnet unit 31 and a second magnet unit 32 disposed on a first side surface 110A of the coil frame 110. The second magnet 130-2 may include a third magnet unit 33 and a fourth magnet unit 34 disposed on a third side surface 110C of the coil frame 110.

[0094] For example, the first magnet unit 31 and the second magnet unit 32 can be disposed in the first seating portion 105A of the coil frame 110, and the third magnet unit 33 and the fourth magnet unit 34 can be disposed in the second seating portion 105B of the coil frame 110.

[0095] Each of the first magnet unit 31 and the second magnet unit 32 may have a shape corresponding to the first side surface 110A of the coil frame 110, such as a generally polyhedral shape (e.g., a cube or cuboid). Additionally, each of the third magnet unit 33 and the fourth magnet unit 34 may have a shape corresponding to the third side surface 110C of the coil frame 110, such as a generally polyhedral shape (e.g., a cube or cuboid).

[0096] The first magnet unit 31 and the second magnet unit 32 can be configured to face each other or be oriented towards each other in a third direction perpendicular to the optical axis. The first magnet unit 31 and the second magnet unit 32 can be configured to be in contact with each other.

[0097] The third magnet unit 33 and the fourth magnet unit 34 can be configured to face each other or be oriented towards each other in a second direction perpendicular to the optical axis. The third magnet unit 33 and the fourth magnet unit 34 can also be configured to be in contact with each other.

[0098] The first magnet unit 31 and the second magnet unit 32 can be arranged to be spaced apart from each other. A partition wall 35A can be provided between the first magnet unit 31 and the second magnet unit 32. The first magnet 130-1 may include the partition wall 35A provided between the first magnet unit 31 and the second magnet unit 32.

[0099] Furthermore, the third magnet unit 33 and the fourth magnet unit 34 can be arranged to be spaced apart from each other. A partition wall 35B can be provided between the third magnet unit 33 and the fourth magnet unit 34. The second magnet 130-2 may include the partition wall 35B provided between the third magnet unit 33 and the fourth magnet unit 34.

[0100] For example, each of the partition walls 35A and 35B can be a substantially non-magnetic portion and can include sections with little or no magnetic polarity. For example, the partition wall can be filled with air or formed of a non-magnetic material and can be referred to as a "neutral region." In another embodiment, for example, the partition wall can be part of the coil frame 110.

[0101] The separator walls 35A and 35B may be portions intentionally formed when magnetizing two magnetic units (e.g., 31 and 32 or 33 and 34). Each of the separator walls 35A and 35B may have a greater width relative to the boundary between the N and S poles of each magnetic unit. In this case, the width of each of the separator walls 35A and 35B may be the length of the separator wall in the direction in which the two magnetic units (e.g., 31 and 32 or 33 and 34) face each other.

[0102] The partition walls 35A and 35B can be formed to extend along the optical axis, and the two magnet units can be arranged on opposite sides of the partition walls 35A or 35B in a direction perpendicular to the optical axis.

[0103] In another embodiment, the partition wall may be formed to extend in a direction perpendicular to the optical axis, and the two magnet units may be arranged on opposite sides of the partition wall in the direction of the optical axis.

[0104] Each of the first magnet unit 31 and the second magnet unit 32 can be a bipolar magnet with two different polarities (e.g., N pole and S pole). In addition, each of the third magnet unit 33 and the fourth magnet unit 34 can be a bipolar magnet with two different polarities (e.g., N pole and S pole).

[0105] For example, each of the first magnet units 31 to the fourth magnet units 34 may be a bipolar magnet divided into N poles and S poles in a first direction. For example, the first surface of each of the first magnet units 31 and the second magnet units 32 facing the coil units 20A and 20B may include N poles and S poles. For example, the first surface of each of the third magnet units 33 and the fourth magnet units 34 facing the coil units 20C and 20D may include N poles and S poles.

[0106] The first magnet unit 31 and the second magnet unit 32 can be configured such that opposite polarities are opposite to or facing each other in a third direction. The third magnet unit 33 and the fourth magnet unit 34 can be configured such that opposite polarities are opposite to or facing each other in a second direction.

[0107] For example, the N pole (or S pole) of the first magnet unit 31 (or the third magnet unit 33) can be located in the upper portion, and the S pole (or N pole) of the first magnet unit 31 (or the third magnet unit 33) can be located in the lower portion. Alternatively, for example, the N pole (or S pole) of the second magnet unit 32 (or the fourth magnet unit 34) can be located in the lower portion, and the S pole (or N pole) of the second magnet unit 32 (or the fourth magnet unit 34) can be located in the upper portion.

[0108] Each of the first magnet 130-1 and the second magnet 130-2 may be a quadrupole magnet comprising two N poles and two S poles. In another embodiment, at least one of the first to fourth magnet units may be a quadrupole magnet having two N poles and two S poles.

[0109] In another embodiment, the coil frame 110 may include at least a portion located between the first magnet unit 31 and the second magnet unit 32 and at least another portion located between the third magnet unit 33 and the fourth magnet unit 34.

[0110] The housing 140 may be disposed inside the cover member (not shown). For example, the housing 140 may be attached to the cover member.

[0111] The housing 140 may house at least a portion of the coil holder 110. The housing 140 may support the coil 120, the circuit board 190, and the yoke 136. The AF moving unit may be a portion capable of moving along the optical axis, and the housing 140 and components coupled to the housing 140, such as the coil 120, the circuit board 190, the position sensor 70, and the yoke 80, may correspond to a fixed unit.

[0112] The housing 140 may include a cavity for receiving the coil holder 110. The housing 140 may include an opening 201 corresponding to, facing, or overlapping with the opening 110 of the coil holder 110. The opening 201 may be located at the center or central region of the housing 140. For example, the opening 201 of the housing 140 may be a through-hole or a hollow portion penetrating the housing 140 along the optical axis. The opening 201 of the housing 140 may have a shape corresponding to the shape of the coil holder 110, such as a polygonal shape (e.g., a quadrilateral or octagonal shape) or a circular shape (or an elliptical shape). However, the shape of the opening 201 is not limited to these and can be modified in various ways.

[0113] The housing 140 may include a plurality of side portions 141A to 141D. The housing 140 may include corners or corner portions, each of which is positioned between two adjacent side portions of the housing 140.

[0114] The housing 140 may include a first side portion 141A corresponding to a first side surface 110A of the coil holder 110, a second side portion 141B corresponding to a second side portion 110B of the coil holder 110, a third side portion 141C corresponding to a third side portion 110C of the coil holder 110, and a fourth side portion 141D corresponding to a fourth side portion 110D of the coil holder 110.

[0115] For example, housing 140 may include a first side portion 141A and a second side portion 141B positioned opposite to each other relative to the optical axis (or coil frame 110), and may include a third side portion 141C and a fourth side portion 141D positioned between the first side portion 141A and the second side portion 141B and positioned opposite to each other relative to the optical axis (or coil frame 110). For example, each of the first side portion 141A to the fourth side portion 141D of housing 140 may be configured to be parallel to a corresponding side plate of the cover member.

[0116] The housing 140 may include a seating portion 41 or a receiving portion in which the coil 120 is disposed. The seating portion 41 may be formed on at least one of the side portions 141A to 141D of the housing 140. For example, the seating portion 41 may include a first seating portion 41A disposed on a first side portion 141A of the housing 140 and a second seating portion 41B disposed on a third side portion 141C of the housing 140.

[0117] exist Figure 4a In this embodiment, the mounting portion 41 may be in the form of a through-hole penetrating a side portion (e.g., 141A or 141C) of the housing 140. Because the mounting portion 141 is in the form of a through-hole, the housing 140 is not inserted between the position sensor 70 and the magnet 130. Therefore, the sensitivity of the position sensor 70 can be improved, the output of the position sensor 70 can be increased, and the autofocus performance can be enhanced. In another embodiment, the mounting portion 141 may be in the form of a recess or groove recessed in the outer or inner surface of the side portion of the housing 140.

[0118] The housing 140 may include a receiving portion 42 (or a seating portion) in which a position sensor 70 is disposed or seated. For example, the housing 140 may include a first receiving portion 42A in which a first sensor 71A is disposed, a second receiving portion 42B in which a second sensor 71B is disposed, a third receiving portion 42C in which a third sensor 71C is disposed, and a fourth receiving portion 42D in which a fourth sensor 71D is disposed. The first receiving portion 42A and the second receiving portion 42B may be disposed on a first side portion 141A of the housing 140, and the third receiving portion 42C and the fourth receiving portion 42D may be disposed on the third side portion 141C of the housing 140. For example, the first receiving portion 42A may be positioned on one side of the first seating portion 41A, and the second receiving portion 42B may be positioned on the other side of the first seating portion 41A. For example, the third receiving portion 42C may be positioned on one side of the second seating portion 41B, and the fourth receiving portion 42D may be positioned on the other side of the second seating portion 41B. The first receiving portion 42A and the second receiving portion 42B may be adjacent to the first seating portion 41A, and the third receiving portion 42C and the fourth receiving portion 42D may be adjacent to the second seating portion 41B.

[0119] The receiving portion 42 may be in the form of a through-hole penetrating a side portion (e.g., 141A or 141C) of the housing 140. In another embodiment, the receiving portion 42 may be in the form of a recess or groove recessed in the outer or inner surface of the side portion of the housing 140.

[0120] The housing 140 may include a protrusion 45 corresponding to or facing the avoidance portion 23 of the coil holder 110. The protrusion 45 may protrude from the inner surface or inner side surface of the housing 140 toward the coil holder 110.

[0121] For example, protrusions 45 may be formed on the inner surface of each of two adjacent side portions of housing 140. For example, protrusions 45 may include a first protrusion 45A and a second protrusion 45B, the first protrusion 45A corresponding to or facing the first avoidance portion 23A of coil holder 110 and formed on the inner surface of the second side portion 141B of housing 140, and the second protrusion 45B corresponding to or facing the second avoidance portion 23B of coil holder 110 and formed on the inner surface of the fourth side portion 141D of housing 140.

[0122] The housing 140 may include a recess 48 corresponding to or facing the protrusion 22 of the coil holder 110. The recess 48 may be recessed in the inner surface or inner side surface of the housing 140.

[0123] For example, the avoidance portion 48 may be formed on the inner surface of each of two adjacent side portions of the housing 140. For example, the avoidance portion 48 may include a first avoidance portion 48A and a second avoidance portion 48B, the first avoidance portion 48A corresponding to or facing the first protrusion 22A of the coil holder 110 and formed on the inner surface of the second side portion 141B of the housing 140, and the second avoidance portion 48B corresponding to or facing the second protrusion 22B of the coil holder 110 and formed on the inner surface of the fourth side portion 141D of the housing 140.

[0124] Despite Figure 4a Although not shown, housing 140 may include a first stop formed on the upper portion of housing 140, on the upper surface of housing 140, or at the upper end of housing 140. Housing 140 may include a second stop formed on the lower portion of housing 140, on the lower surface of housing 140, or at the lower end of housing 140. The first and second stops of coil holder 110 and housing 140 may alternatively be referred to as "bosses" or "protrusions".

[0125] The housing 140 may include at least one recess 47 in which at least another portion of the rolling member 150 is disposed or received. The recess 47 of the housing 140 may correspond to, face, or overlap with a recess 117 of the coil holder 110. The recess 47 may alternatively be referred to as a “receiving recess,” “guide recess,” “guide portion,” or “guide track.” At least another portion of the rolling member 150 may contact the recess 47 of the housing 140. The recess 47 may be provided on at least one of a first to a fourth side portion of the housing 140.

[0126] For example, recess 47 may include a plurality of recesses formed in different side portions of housing 140. In another embodiment, recess 47 may include a plurality of recesses formed in one side portion of housing 140.

[0127] For example, the recess 47 may include a first recess 47A formed in a first side portion 141A of the housing 140 and a second recess 47B formed in a second side portion 141B of the housing 140. The first recess 47A may be positioned adjacent to a corner of the housing 140. The second recess 47B may be positioned adjacent to another corner of the housing 140 that is diagonally opposite to that corner.

[0128] For example, a first recess 47A may be formed in a first protrusion 51A that protrudes from the inner surface of the first side portion 141A of the housing 140, and a second recess 47B may be formed in a second protrusion 51B that protrudes from the inner surface of the third side portion 141C of the housing 140. In another embodiment, the first recess 47A may be recessed in the inner surface of the first side portion 141A of the housing 140, and the second recess 47B may be recessed in the inner surface of the third side portion 141C of the housing 140.

[0129] For example, the first recess 47A can be positioned adjacent to the first coil unit 20A, and the second recess 47B can be positioned adjacent to the fourth coil unit 20D.

[0130] For example, recess 47 may include an opening leading to the upper surface of housing 140. Alternatively, recess 47 may include an opening leading to the lower surface of housing 140. In another embodiment, recess 47 may not lead to either the upper or lower surface of housing 140.

[0131] For example, the recess 47 may be formed to extend along the optical axis. For example, the recess 47 may extend from the upper surface of the housing 140 to the bottom surface of the housing 140. In another embodiment, the recess 47 may extend along the optical axis to be formed between the upper and lower surfaces of the housing 140. For example, the recess 47 may include two or more side surfaces. For example, the recess 47 may include an inner surface having at least one stepped portion.

[0132] For example, when viewed from above, the recess 47 may have a polygonal shape (e.g., a triangular shape, a quadrilateral shape, or a pentagonal shape). Alternatively, in another embodiment, the recess 47 may have a V-shaped or U-shaped shape.

[0133] The coil 120 can be disposed on the housing 140. For example, the coil 120 can be disposed in the mounting portion 41 of the housing 140.

[0134] Coil 120 can correspond to, face, or overlap with magnet 130 in a direction perpendicular to the optical axis. Coil 120 can move coil holder 110 along the optical axis through its interaction with magnet 130. Coil holder 110 can also move along the optical axis through the electromagnetic force generated by the interaction between coil 120 and magnet 130. For example, coil 120 can be an autofocus (AF) drive coil for implementing AF functionality.

[0135] The coil 120 may include a first coil unit 20A that corresponds to, faces, or overlaps with the first magnet unit 31A in a second direction; a second coil unit 20B that corresponds to, faces, or overlaps with the second magnet unit 31B in a second direction; a third coil unit 20C that corresponds to, faces, or overlaps with the third magnet unit 31C in a third direction; and a fourth coil unit 20D that corresponds to, faces, or overlaps with the fourth magnet unit 31D in a fourth direction.

[0136] The first coil unit 20A and the second coil unit 20B can be positioned in the third direction.

[0137] The first coil unit 20A and the second coil unit 20B can be arranged to be spaced apart from each other in a third direction. In another embodiment, the first coil unit 20A and the second coil unit 20B can be arranged to be adjacent to each other or to be in contact with each other.

[0138] The third coil unit 20C and the fourth coil unit 20D can be arranged in the second direction. In another embodiment, the third coil unit 20C and the fourth coil unit 20D can be arranged to be adjacent to each other or in contact with each other.

[0139] For example, the first coil unit 20A and the second coil unit 20B may be disposed between the first side plate of the cover member and the coil frame 110. The third coil unit 20C and the fourth coil unit 20D may be disposed between the third side plate of the cover member and the coil frame 110. For example, the cover member may include a first side plate and a second side plate positioned opposite each other relative to the optical axis, and may include a third side plate and a fourth side plate positioned between the first side plate and the second side plate and opposite each other relative to the optical axis. Each of the first to fourth side plates of the cover member may correspond to a corresponding one of the first side portions 141A to the fourth side portions 141D of the housing 140, face the corresponding one of the first side portions 141A to the fourth side portions 141D of the housing 140, or overlap with a corresponding one of the first side portions 141A to the fourth side portions 141D of the housing 140.

[0140] In order to generate electromagnetic force through interaction with magnet 130, a drive signal (e.g., drive current or voltage) can be supplied or applied to coil 120.

[0141] For example, an independent drive signal can be supplied or applied to each of the first coil units 20A to the fourth coil units 20D. The drive signal applied to each of the coil units 20A to 20D can include at least one of a DC signal or an AC signal.

[0142] The AF moving unit (or movable unit) can be moved in a first direction, such as in the upward direction (+Z axis direction) or the downward direction (-Z axis direction), by the electromagnetic force generated by the interaction between the coil 120 and the magnet 130.

[0143] The magnitude and / or polarity (e.g., direction of current flow) of the drive signal applied to the coil 120 can be controlled to adjust the magnitude and / or direction of the electromagnetic force generated by the interaction between the coil 120 and the magnet 130. The movement of the AF moving unit in the first direction can be controlled by controlling the drive signal supplied to the coil 120, and thus, an autofocus function can be performed.

[0144] Each of the coil units 20A to 20D may have a closed-loop shape. For example, each of the coil units 20A to 20D may have an annular shape including holes 8A to 8D (or hollow portions).

[0145] For example, each of the first coil unit 20A and the second coil unit 20B can be wound clockwise (or counterclockwise) around a first axis perpendicular to the optical axis and parallel to a second direction. The hole 8A of the first coil unit 20A can face or overlap with the first magnet unit 31 in the second direction, and the hole 8B of the second coil unit 20B can face or overlap with the second magnet unit 32 in the second direction.

[0146] For example, each of the third coil unit 20C and the fourth coil unit 20D can be formed to be wound clockwise (or counterclockwise) around a second axis perpendicular to the optical axis and parallel to the third direction. The hole 8C of the third coil unit 20C can face or overlap with the third magnet unit 33 in the third direction, and the hole 8D of the fourth coil unit 20D can face or overlap with the fourth magnet unit 34 in the third direction.

[0147] Reference Figure 4a and Figure 6 The housing 140 may include a first corner CA1 where the first side portion 141A and the fourth side portion 141D meet, a second corner CA2 where the first side portion 141A and the third side portion 141C meet, a third corner CA3 where the second side portion 141B and the third side portion 141C meet, and a fourth corner CA4 where the second side portion 141B and the fourth side portion 141D meet. The first corner CA1 and the third corner CA3 may face each other or be positioned opposite each other in the first diagonal direction. The second corner CA2 and the fourth corner CA4 may face each other or be positioned opposite each other in the second diagonal direction. The second diagonal direction may be a direction intersecting the first diagonal direction. For example, the second diagonal direction may be a direction perpendicular to the first diagonal direction.

[0148] The first coil unit 20A can be positioned adjacent to a first corner CA1 of the housing 140, the first corner CA1 being located at one end of the first side portion 141A of the housing 140. The second coil unit 20B can be positioned adjacent to a second corner CA2 of the housing 140, the second corner CA2 being located at the other end of the first side portion 141A of the housing 140.

[0149] The third coil unit 20C can be positioned adjacent to the second corner CA2 of the housing 140, which is located at one end of the third side portion 141C of the housing 140. The fourth coil unit 20D can be positioned adjacent to the third corner CA2 of the housing 140, which is located at the other end of the third side portion 141C of the housing 140.

[0150] For example, the first coil unit 20A and the second coil unit 20B can be positioned relative to each other with respect to the first reference line 301. Additionally, for example, the third coil unit 20C and the fourth coil unit 20D can be positioned relative to each other with respect to the second reference line 302. This arrangement facilitates the correction of tilt of the coil frame 110, which will be described later. For example, as the separation distance between two coil units (e.g., 20A and 20B or 20C and 20D) increases, the driving force required to correct the tilt of the coil frame 110 can be reduced and the correction speed can be increased.

[0151] For example, the first reference line 301 may be a straight line perpendicular to the optical axis, parallel to the second direction, and passing through the center of the housing 140 (or the optical axis OA). Alternatively, the first reference line 301 may be a straight line parallel to the second direction and passing through the center of the coil holder 110 (or the center of the aperture 101 of the coil holder 110).

[0152] For example, the second reference line 302 can be a straight line perpendicular to the optical axis, parallel to a third direction, and passing through the center of the housing 140 (or the optical axis OA). Alternatively, the third reference line 302 can be a straight line parallel to a third direction and passing through the center of the coil holder 110 (or the center of the aperture 101). For example, the center of the housing 140 can be the center of the opening 201 of the housing 140. Alternatively, the center of the housing 140 can be the center of the space defined by the first side portion to the fourth side portion of the housing 140.

[0153] The first coil unit 20A and the second coil unit 20B may be spaced apart relative to the first reference line 301 and may not overlap with the first reference line 301 in the second direction. The third coil unit 20C and the fourth coil unit 20D may be spaced apart relative to the second reference line 302 and may not overlap with the second reference line 302 in the third direction.

[0154] In another embodiment, a portion of at least one of the first coil unit 20A or the second coil unit 20B may overlap with the first reference line 301 in the second direction. Additionally, a portion of at least one of the third coil unit 20C or the fourth coil unit 20D may overlap with the second reference line 302 in the third direction.

[0155] Coil 120 may be disposed on circuit board 190. Coil 120 may be connected to circuit board 190. Coil 120 may be mounted on circuit board 190. For example, coil 120 may be disposed on a first surface of circuit board 190. For example, the first surface of circuit board 190 may be the surface of the outer surface of the side portion facing housing 140. Coil 120 may be electrically connected to circuit board 190.

[0156] The circuit board 190 may be disposed on or attached to the housing 140. For example, the circuit board 190 may be attached to a side portion of the housing 140. The circuit board 190 may include a first board 191 and a second board 192. The first board 191 may be disposed on or attached to a first side portion 141A of the housing 140. For example, the first board 191 may be disposed on or attached to the outer surface of the first side portion 141A of the housing 140.

[0157] The second plate 192 can be connected to the first plate 191 and can be disposed on or attached to the third side portion 141C of the housing 140. For example, the second plate 192 can be disposed on or attached to the outer surface of the third side portion 141C of the housing 140. For example, the second plate 192 can be bent from the first plate 191.

[0158] The first coil unit 20A and the second coil unit 20B can be disposed on or connected to the first plate 191. For example, the first coil unit 20A and the second coil unit 20B can be disposed on or connected to the first surface of the first plate 191. The first surface of the first plate 191 can be the surface facing the outer surface of the first side portion 141A of the housing 140. The first coil unit 20A and the second coil unit 20B can be electrically connected to the first plate 191. The first coil unit 20A and the second coil unit 20B can be electrically connected to the first plate 191 using solder or conductive adhesive.

[0159] The first coil unit 20A and the second coil unit 20B can be disposed on or connected to the first plate 191. For example, the first coil unit 20A and the second coil unit 20B can be disposed on or connected to the first surface of the first plate 191. The first surface of the first plate 191 can be the surface facing the outer surface of the first side portion 141A of the housing 140. The first coil unit 20A and the second coil unit 20B can be electrically connected to the first plate 191.

[0160] The third coil unit 20C and the fourth coil unit 20D can be disposed on or connected to the second plate 192. For example, the third coil unit 20C and the fourth coil unit 20D can be disposed on or connected to the first surface of the second plate 192. The first surface of the second plate 192 can be the surface facing the outer surface of the third side portion 141C of the housing 140. The third coil unit 20C and the fourth coil unit 20D can be electrically connected to the second plate 192. The third coil unit 20C and the fourth coil unit 20D can be electrically connected to the second plate 192 using solder or conductive adhesive.

[0161] The first coil unit 20A can face or overlap with the first magnet unit 31 in the second direction. The second coil unit 20B can face or overlap with the second magnet unit 32 in the second direction. The third coil unit 20C can face or overlap with the third magnet unit 33 in the third direction. The fourth coil unit 20D can face or overlap with the fourth magnet unit 34 in the third direction.

[0162] For example, circuit board 190 can be a printed circuit board or an FPCB.

[0163] The circuit board 190 may include a plurality of terminals P1 to P16. For example, the plurality of terminals P1 to P16 may be disposed on a second surface of the circuit board 190. The second surface of the circuit board 190 may be a surface opposite to the first surface of the circuit board 190.

[0164] exist Figure 1 In the embodiment shown, the circuit board 190 includes sixteen terminals P1 to P16. However, in another embodiment, the number of terminals on the circuit board 190 may be two or more.

[0165] For example, circuit board 190 may include terminals P1 to P8 disposed on first board 191 and terminals P9 to P16 disposed on second board 192.

[0166] For example, terminals P1 to P8 may be arranged in a row at the lower end of the second surface of the first plate 191. The second surface of the first plate 191 may be the surface opposite to the first surface of the first plate 191.

[0167] For example, terminals P9 to P16 may be arranged in a row at the lower end of the second surface of the second plate 192. The second surface of the second plate 192 may be the surface opposite to the first surface of the second plate 192.

[0168] The circuit board 190 may include a circuit pattern or wiring for electrically connecting the position sensor 70 to a plurality of terminals P9 to P18 of the circuit board.

[0169] Position sensor 70 can be disposed on housing 140. Position sensor 70 can be disposed on circuit board 190. Position sensor 70 can be coupled to circuit board 190 or mounted on circuit board 190. Position sensor 70 can be electrically connected to circuit board 190. Position sensor 70 can be disposed on or coupled to the first surface of circuit board 190. For example, position sensor 70 can be disposed on the inner side of circuit board 190 disposed on housing 140. In this case, the inner side of circuit board 180 can be the side of circuit board 190 closer to the center of housing 140.

[0170] Position sensor 170 can detect the position or displacement of coil holder 110 in a first direction. Position sensor 170 can detect magnet 130. Position sensor 170 can detect the position or displacement of magnet 130 in a first direction. Position sensor 70 can detect the magnitude of the magnetic field of magnet 130 and can output an output signal (e.g., output voltage).

[0171] For example, the controller 830 of the camera module 200 or the controller 780 of the optical instrument 200A can use the output signal of the position sensor 70 to sense or detect the displacement of the coil frame 110 in the optical axis direction.

[0172] The position sensor 70 may include at least one sensor 71A and 71B configured to detect a first magnet 130-1 and at least one sensor 71C and 71D configured to detect a second magnet 130-2.

[0173] For example, the position sensor 70 may include a first sensor 71A, a second sensor 71B, a third sensor 71C, and a fourth sensor 71D.

[0174] The first sensor 71A and the second sensor 71B can be disposed on the first side portion 141A of the housing 140. The third sensor 71C and the fourth sensor 71D can be disposed on the third side portion 141C of the housing 140.

[0175] The first sensor 71A and the second sensor 71B can be disposed on or connected to the first plate 191. The first sensor 71A and the second sensor 71B can be disposed on or connected to the first surface of the first plate 191. The first sensor 71A and the second sensor 71B can be electrically connected to the first plate 191. The first sensor 71A and the second sensor 71B can be electrically connected to the first plate 191 using solder or conductive adhesive.

[0176] The third sensor 71C and the fourth sensor 71D can be disposed on or connected to the second plate 192. The third sensor 71C and the fourth sensor 71D can be disposed on or connected to the first surface of the second plate 192. The third sensor 71C and the fourth sensor 71D can be electrically connected to the second plate 192. The third sensor 71C and the fourth sensor 71D can be electrically connected to the second plate 192 using solder or conductive adhesive.

[0177] The first sensor 71A can be positioned on one side of the first coil unit 20A, and the second sensor 71B can be positioned on one side of the second coil unit 20B. For example, the first coil unit 20A and the second coil unit 20B can be disposed between the first sensor 71A and the second sensor 71B. The third sensor 71C can be positioned on one side of the third coil unit 20C, and the fourth sensor 71D can be positioned on one side of the fourth coil unit 20D. For example, the third coil unit 20C and the fourth coil unit 20D can be disposed between the third sensor 71C and the fourth sensor 71D.

[0178] The first sensor 71A can detect the first magnet unit 31. For example, the first sensor 71A can detect the magnitude of the magnetic field of the first magnet unit 31. For example, the first sensor 71A can detect the displacement or position of the first magnet unit 31 in a first direction.

[0179] The second sensor 71B can detect the second magnet unit 32. For example, the second sensor 71B can detect the magnitude of the magnetic field of the second magnet unit 32. For example, the second sensor 71B can detect the displacement or position of the second magnet unit 32 in the first direction.

[0180] The third sensor 71C can detect the third magnet unit 33. For example, the third sensor 71C can detect the magnitude of the magnetic field of the third magnet unit 33. For example, the third sensor 71C can detect the displacement or position of the third magnet unit 33 in the first direction.

[0181] The fourth sensor 71D can detect the fourth magnet unit 34. For example, the fourth sensor 71D can detect the magnitude of the magnetic field of the fourth magnet unit 34. For example, the fourth sensor 71D can detect the displacement or position of the fourth magnet unit 34 in the first direction.

[0182] The first sensor 71A can be positioned closer to the first magnet unit 31 than to the second magnet unit 32. The first sensor 71A may not overlap with the first magnet unit 31 in the second direction. Furthermore, the first sensor 71A may not overlap with the first coil unit 20A in the second direction. The second sensor 71B can be positioned closer to the second magnet unit 32 than to the first magnet unit 31. The second sensor 71B may not overlap with the second magnet unit 32 in the second direction. Furthermore, the second sensor 71B may not overlap with the second coil unit 20B in the second direction.

[0183] The third sensor 71C can be positioned closer to the third magnet unit 33 than to the fourth magnet unit 34. The third sensor 71C may not overlap with the third magnet unit 33 in a third direction. Furthermore, the third sensor 71C may not overlap with the third coil unit 20C in a third direction. The fourth sensor 71C can be positioned closer to the fourth magnet unit 34 than to the third magnet unit 33. The fourth sensor 71D may not overlap with the fourth magnet unit 34 in a third direction. Furthermore, the fourth sensor 71D may not overlap with the fourth coil unit 20D in a third direction.

[0184] In another embodiment, at least a portion of the first sensor 71A may overlap with the first magnet unit 31 in the second direction. At least a portion of the second sensor 71B may overlap with the second magnet unit 32 in the second direction. At least a portion of the third sensor 71C may overlap with the third magnet unit 33 in the third direction. At least a portion of the fourth sensor 71D may overlap with the fourth magnet unit 34 in the third direction.

[0185] In another embodiment, the first sensor 71A may be disposed in the hollow portion 8A of the first coil unit 20A, the second sensor 71B may be disposed in the hollow portion 8B of the second coil unit 20B, the third sensor 71C may be disposed in the hollow portion 8C of the third coil unit 20C, and the fourth sensor 71D may be disposed in the hollow portion 8D of the fourth coil unit 20D.

[0186] The position sensor 70 may be a driver integrated circuit (IC) including a Hall sensor. The position sensor 70 may include a temperature sensing element configured to measure the temperature of the lens-mounted mobile device. Temperature information output from the temperature sensing element can be used for temperature compensation of the output of the position sensor 70.

[0187] For example, each of the first sensor 71A to the fourth sensor 71D may be a driver IC that includes a Hall sensor. For example, the Hall sensor may be a magnetic sensing element configured to detect position. For example, the Hall sensor may detect the magnitude of the magnetic field of a corresponding magnet unit among the first to fourth magnet units and may output an output signal.

[0188] Each of the first sensor 71A to the fourth sensor 71D, which is in the form of a driver IC, can receive power signals VDD and VSS from the controller 830 or 780, and can transmit clock signals SCL and data signals SDA to and receive clock signals SCL and data signals SDA from the controller 830 or 780 via data communication protocols, such as I2C communication. In this case, the power signal VSS can be ground voltage or 0V, and the power signal VDD can be a preset voltage for driving the driver IC and can be a DC voltage and / or an AC voltage.

[0189] Each of the first sensor 71A to the fourth sensor 71D, which is in the form of a driver IC, may include a first terminal to a sixth terminal.

[0190] The first to fourth terminals of each of the first sensor 71A to the fourth sensor 71D can be configured to transmit data to and receive data from the controller 830 or 780 using data communication protocols, such as I2C communication.

[0191] For example, the first and second terminals of each of the sensors 71A to 71D may be configured to receive electrical signals, the third terminal of each of the sensors 71A to 71D may be configured to transmit and receive clock signals, and the fourth terminal of each of the sensors 71A to 71D may be configured to transmit and receive data signals.

[0192] Each of the first to fourth terminals of the first sensor 71A can be electrically connected to a corresponding terminal among four of the multiple terminals (e.g., P1 to P4) of the circuit board 190 (e.g., the first board 191). Each of the first to fourth terminals of the second sensor 71B can be electrically connected to a corresponding terminal among another four of the multiple terminals (e.g., P5 to P8) of the circuit board 190 (e.g., the first board 191).

[0193] Each of the first to fourth terminals of the third sensor 71C can be electrically connected to a corresponding terminal among four of the multiple terminals (e.g., P9 to P12) of the circuit board 190 (e.g., the second board 192). Each of the first to fourth terminals of the fourth sensor 71D can be electrically connected to a corresponding terminal among another four of the multiple terminals (e.g., P13 to P16) of the circuit board 190 (e.g., the second board 192).

[0194] In another embodiment, one of the two power terminals of each of the first to fourth sensors can be shared and connected to a single terminal of the circuit board. In this case, all five power terminals of the circuit board 190 can be used for the first to fourth sensors, and the number of terminals on the circuit board can be reduced.

[0195] The fifth and sixth terminals of each of the first sensor 71A to the fourth sensor 71D can be configured to supply a drive signal to a corresponding one of the first coil units 20A to the fourth coil units 20D.

[0196] The first sensor 71A can be electrically connected to the first coil unit 20A. The first coil unit 20A can be electrically connected to the fifth and sixth terminals of the first sensor 71A. The first sensor 71A can supply a first drive signal to the first coil unit 20A through the fifth and sixth terminals of the first sensor 71A. The first sensor 71A can control the first drive signal supplied to the first coil unit 20A.

[0197] The second sensor 71B can be electrically connected to the second coil unit 20B. The second coil unit 20B can be electrically connected to the fifth and sixth terminals of the second sensor 71B. The second sensor 71B can supply a second drive signal to the second coil unit 20B through its fifth and sixth terminals. The second sensor 71B can control the second drive signal supplied to the second coil unit 20B.

[0198] The third sensor 71C can be electrically connected to the third coil unit 20C. The third coil unit 20C can be electrically connected to the fifth and sixth terminals of the third sensor 71C. The third sensor 71C can supply a third drive signal to the third coil unit 20C through its fifth and sixth terminals. The third sensor 71C can control the third drive signal supplied to the third coil unit 20C.

[0199] The fourth sensor 71D can be electrically connected to the fourth coil unit 20D. The fourth coil unit 20D can be electrically connected to the fifth and sixth terminals of the fourth sensor 71D. The fourth sensor 71D can supply a fourth drive signal to the fourth coil unit 20D through its fifth and sixth terminals. The fourth sensor 71D can control the fourth drive signal supplied to the fourth coil unit 20D.

[0200] In another embodiment, each of the first sensor 71A to the fourth sensor 71D can be implemented as a Hall sensor. In the embodiment where each of the sensors 71A to 71D is implemented as a Hall sensor, each of the sensors 71A to 71D may include two input terminals configured to receive a drive signal or electrical power and two output terminals configured to output an output signal.

[0201] Each of the eight input terminals and eight output terminals of the first sensor 71A to the fourth sensor 71D can be electrically connected to a corresponding terminal of the plurality of terminals P1 to P16 of the circuit board 190. That is, an independent drive signal can be supplied from an external source to each of the first sensor 71A to the fourth sensor 71D through eight terminals of the plurality of terminals P1 to P8 of the circuit board 190. Furthermore, the output signal of each of the first sensor 71A to the fourth sensor 71D can be transmitted to the outside through the other eight terminals of the plurality of terminals P1 to P16 of the circuit board 190.

[0202] In embodiments where each sensor is implemented as a Hall sensor, the circuit board 190 may also include additional terminals, such as eight terminals, configured to supply drive signals to each of the first coil units 20A to the fourth coil units 20D.

[0203] In another embodiment, one of the first sensor 71A and the second sensor 71D may be omitted. In another embodiment, one of the third sensor 71C and the fourth sensor 71D may be omitted. In yet another embodiment, one of the first sensor 71A and the second sensor 71D, as well as one of the third sensor 71C and the fourth sensor 71D, may be omitted. In another embodiment, the remaining sensors, excluding the omitted sensors, can detect the position or displacement of the magnet unit corresponding to the remaining sensors.

[0204] According to another embodiment, the lens moving device may include at least one sensing magnet separate from the magnet 130 for the first sensor 71A to the fourth sensor 71D. The at least one sensing magnet may be disposed on the coil holder 110. The first sensor 71A to the fourth sensor 71D can detect the sensing magnet. For example, the sensing magnet may include multiple sensing magnets. The multiple sensing magnets may be disposed on the coil holder 110 to correspond to the first sensor 71A to the fourth sensor 71D. Each of the first sensor 71A to the fourth sensor 71D can detect a corresponding sensing magnet among the multiple sensing magnets. Each of the first sensor 71A to the fourth sensor 71D can detect the position or displacement of the corresponding sensing magnet among the multiple sensing magnets.

[0205] In another embodiment, the magnet 130 may be disposed on the housing 140, and the coil 120 may be disposed on the coil holder 110. In this case, the AF moving unit may include the coil holder 110 and the coil 120, and the fixing unit may include the magnet 130 coupled to the housing 140.

[0206] The yoke 80 can be mounted on a fixed unit. For example, the yoke 80 can be mounted on the housing 140 or the circuit board 190. The yoke 80 can be connected to the circuit board 190. For example, the yoke 80 can be mounted on or connected to the second surface of the circuit board 190. For example, the yoke 80 can be positioned opposite to the coil 120 relative to the circuit board 190. The yoke 80 can correspond to, face, or overlap with the magnet 130 in a direction perpendicular to the optical axis. An attractive force can act between the yoke 80 and the magnet 130.

[0207] The magnetic yoke 80 may include a first magnetic yoke 81 disposed between the first side plate of the cover member and the first side surface 110A of the coil holder 110. In addition, the magnetic yoke 80 may include a second magnetic yoke 82 disposed between the third side plate of the cover member and the third side surface 110C of the coil holder 110.

[0208] For example, the first magnetic yoke 81 may be disposed on or connected to the first plate 191. For example, the first magnetic yoke 81 may be disposed on or connected to the second surface of the first plate 191. For example, the second magnetic yoke 82 may be disposed on or connected to the second plate 192. For example, the second magnetic yoke 82 may be disposed on or connected to the second surface of the second plate 192.

[0209] The first magnetic yoke 81 may face or overlap with at least one of the first magnet unit 31 or the second magnet unit 32 in the second direction. An attractive force may act between the first magnetic yoke 81 and the first magnet 130-1. For example, the attractive force may act between the first magnetic yoke 81 and the first magnet 130-1 along the second direction. A magnetic circuit may be formed between the first magnetic yoke 81 and the first magnet 130-1.

[0210] The second magnetic yoke 82 may face or overlap with at least one of the third magnetic unit 33 or the fourth magnetic unit 34 in a third direction. An attractive force may act between the second magnetic yoke 82 and the second magnet 130-2. For example, the attractive force may act between the second magnetic yoke 82 and the second magnet 130-2 in a third direction. A magnetic circuit may be formed between the second magnetic yoke 82 and the second magnet 130-2.

[0211] The first magnetic yoke 81 and the second magnetic yoke 82 can be formed of a material attracted by a magnet. For example, the first magnetic yoke 81 and the second magnetic yoke 82 can be magnetic elements. For example, the first magnetic yoke 81 and the second magnetic yoke 82 can be formed of a metal attracted by a magnet. Alternatively, for example, the first magnetic yoke 81 and the second magnetic yoke 82 can be formed of a magnetized metal. Alternatively, for example, the first magnetic yoke 81 and the second magnetic yoke 82 can be magnets.

[0212] Magnetic yokes 81 and 82 are mounted on a fixed unit, such as housing 140 or circuit board 190. Therefore, due to the attraction between the first magnetic yoke 81 and the first magnet 130-1, the coil holder 110 connected to the first magnet 130-1 can be pulled toward housing 140 in a second direction. Due to the attraction between the first magnetic yoke 81 and the first magnet 130-1, the first spherical member 151 can be pressed by the coil holder 110 and housing 140, and contact can be maintained between the coil holder 110 and the first spherical member 151, and between housing 140 and the first spherical member 151.

[0213] Furthermore, due to the attraction between the second yoke 82 and the second magnet 130-2, the coil frame 110 connected to the second magnet 130-2 can be pulled toward the housing 140 in a third direction. Because of the attraction between the second yoke 82 and the second magnet 130-2, the second spherical member 152 can be pressed by the coil frame 110 and the housing 140, and contact can be maintained between the coil frame 110 and the second spherical member 152, and between the housing 140 and the second spherical member 152.

[0214] The yoke 80 and magnet 130 can be used as “pressing units” or “pressing members” configured to press the spherical members 151 and 152 by means of the housing 140 and coil holder 110. The housing 140 and coil holder 110 can be in close contact with the spherical members 151 and 152 through the pressing unit, and the coil holder 110 can be stably supported by the spherical members 151 and 152 when the coil holder 110 moves along the optical axis.

[0215] The first magnetic yoke 81 may overlap with at least one of the first coil unit 20A or the second coil unit 20B in a second direction. Additionally, the second magnetic yoke 82 may overlap with at least one of the third coil unit 20C or the fourth coil unit 20D in a third direction.

[0216] The rolling element 150 may be disposed between the coil holder 110 and the housing 140. The rolling element 150 may alternatively be referred to as a "spherical element", "ball bearing" or "ball component".

[0217] The rolling member 150 can contact the coil holder 110 and the housing 140, and can perform rolling or sliding motion between the coil holder 110 and the housing 140, thereby supporting the movement of the coil holder 110 in the optical axis direction. When the coil holder 110 moves in the optical axis direction, the rolling member 150 can reduce the friction between the coil holder 110 and the housing 140. Due to the rolling or sliding motion of the rolling member 150, the coil holder 110 can slide along the optical axis direction while in contact with the rolling member 150.

[0218] For example, the rolling member 150 may be formed of metal, plastic, or resin. However, this disclosure is not limited thereto. The rolling member 150 may have a circular shape and may have a diameter sufficient to support the movement of the coil holder 110 in the optical axis direction.

[0219] The rolling member 150 may include a spherical member disposed between a side portion of the housing 140 and a side surface of the coil holder 110. The spherical member may be disposed between one or more side portions of the housing 140 and one or more side surfaces of the coil holder 110 corresponding to those side portions. For example, the rolling member 150 may include one or more spherical members.

[0220] For example, the rolling member 150 may include at least one of a first spherical member 151 disposed between a first side portion 141A of the housing 140 and a first side surface 110A of the coil holder 110, or a second spherical member 152 disposed between a third side portion 141C of the housing 140 and a third side surface 110C of the coil holder 110.

[0221] For example, at least a portion of the first spherical member 151 may be disposed in the recess 117A of the coil holder 110, and at least another portion of the first spherical member 151 may be disposed in the first recess 47A of the housing 140. For example, at least a portion of the second spherical member 152 may be disposed in the recess 117B of the coil holder 110, and at least another portion of the second spherical member 152 may be disposed in the second recess 47A of the housing 140.

[0222] In another embodiment, the recess receiving or providing the rolling member 150 may be formed in only one of the coil holder 110 and the housing 140.

[0223] Each of the first spherical member 151 and the second spherical member 152 may include one or more spherical elements. For example, each of the first spherical member 151 and the second spherical member 152 may include a plurality of spherical elements B1 to B4. The number of spherical elements may be two or more. For example, the plurality of spherical elements B1 to B4 may be arranged or positioned in the first direction.

[0224] Reference Figure 5 The first spherical member 151 may be positioned adjacent to the first corner CA1 of the housing 140. The second spherical member 152 may be positioned adjacent to the third corner CA3 of the housing 140.

[0225] As the coil holder 110 moves along the optical axis, static tilting or kinematic tilting may occur within the coil holder 110. Static tilting can be caused by the guide path for the rolling member 150. For example, static tilting may occur when the recess 117 of the coil holder 110 or the recess 47 of the housing 140 bends or when the recess 117 of the coil holder 110 or the recess 47 of the housing 140 is bent.

[0226] Managing the guide paths, such as tracks, used for the rolling components 150 requires significant time and necessitates multiple modifications to the injection mold to calibrate the guide paths, potentially increasing costs, time, and workload. In particular, substantial time is required to verify that the guide paths meet the required specifications.

[0227] When the coil holder 110 moves under the driving force between the coil and the magnet, tilting may occur due to an imbalance in the driving force. For example, an imbalance in the driving force may occur when the coil and the magnet are only disposed on one surface of the coil holder and one surface of the housing. In addition, even when the coil and the magnet are disposed on two surfaces of the coil holder and two surfaces of the housing, an imbalance in the driving force may occur due to physical or structural differences (or tolerances) between the coil units (or magnet units) disposed on different surfaces.

[0228] Alternatively, tilting of the coil holder 110 may occur due to external impact. Tilting of the coil holder 110 may lead to misalignment of the optical axis, thereby reducing the reliability of AF operation.

[0229] According to the embodiment, the tilt of the coil frame 110 caused by the above-described static tilt or motion tilt can be automatically corrected. In the embodiment, sensors 71A to 71D can detect the tilt of the coil frame 110, and the tilt of the coil frame 110 can be corrected by independently driving the first coil unit 20A to the fourth coil unit 20D.

[0230] Figure 8a An embodiment of the tilting of the coil frame 110 and the drive force control for tilt correction is shown, and Figure 8b Another embodiment of the tilting of the coil frame 110 and the drive force control for tilt correction is shown.

[0231] Reference Figure 8a The tilt of the coil frame 110 may occur due to static tilt or kinematic tilt. For example, due to the tilt of the coil frame 110, the third region A3 of the coil frame 110 may be positioned higher than the first region A1. Each of the first sensor 71A to the fourth sensor 71D can detect the position of the corresponding one of the first magnet units 31 to the fourth magnet units 34.

[0232] The first region A1 to the fourth region A4 can be regions of the coil frame 110 divided by the first reference line 301 and the second reference line 302. For example, when viewed from above, the first quadrant of the XY coordinate plane can be the first region A1 of the coil frame 110, the second quadrant can be the second region A2 of the coil frame 110, the third quadrant can be the third region A3 of the coil frame 110, and the fourth quadrant can be the fourth region of the coil frame 110. The origin of the XY coordinate plane can be the intersection of the first reference line 301 and the second reference line 302, the X-axis can be the first reference line 301, and the Y-axis can be the second reference line 302.

[0233] For example, when it happens Figure 8a When the coil frame 110 shown is tilted, the position of the second magnet unit 32 can be detected as higher than the position of the first magnet unit 31, and the position of the third magnet unit 33 can be detected as higher than the position of the fourth magnet unit 34.

[0234] exist Figure 8a In order to perform tilt correction, the electromagnetic force (or driving force F1) generated by the interaction between the first coil unit 20A and the first magnet unit 31 can be adjusted to be greater than the electromagnetic force (or driving force F2) generated by the interaction between the second coil unit 20B and the second magnet unit 32.

[0235] Alternatively, for tilt correction, the electromagnetic force (or driving force F4) generated by the interaction between the fourth coil unit 20D and the fourth magnet unit 34 can be adjusted to be greater than the electromagnetic force (or driving force F3) generated by the interaction between the third coil unit 20C and the third magnet unit 33.

[0236] For example, to perform tilt correction, the first drive signal I1 supplied to the first coil unit 20A can be set to be greater than the second drive signal I2 supplied to the second coil unit 20B. Similarly, to perform tilt correction, the fourth drive signal I4 supplied to the fourth coil unit 20D can be set to be greater than the third drive signal I3 supplied to the third coil unit 20C. In this way, Figure 8a The tilt of the coil frame 110 shown can be corrected by individually controlling or adjusting the first drive signal to the fourth drive signal.

[0237] Reference Figure 8b Due to the tilt of the coil frame 110, the second region A2 of the coil frame 110 can be positioned higher than the fourth region A4. When this occurs... Figure 8b When the coil frame 110 shown is tilted, the position of the first magnet unit 31 can be detected as higher than the position of the second magnet unit 32, and the position of the third magnet unit 33 can be detected as higher than the position of the fourth magnet unit 34.

[0238] To correct tilt, the driving force F2 can be adjusted to be greater than the driving force F1. Additionally, to correct tilt, the driving force F4 can be adjusted to be greater than the driving force F3.

[0239] To perform tilt correction, the second drive signal I2 supplied to the second coil unit 20B can be set to be greater than the second drive signal I2 supplied to the first coil unit 20A. Similarly, to perform tilt correction, the fourth drive signal I4 supplied to the fourth coil unit 20D can be set to be greater than the third drive signal I3 supplied to the third coil unit 20C. In this way, Figure 8b The tilt of the coil frame 110 shown can be corrected by individually controlling or adjusting the first drive signal to the fourth drive signal.

[0240] Based on the positions of the first magnet unit 31 to the fourth magnet unit 34 when the coil frame 110 tilts, the first drive signal to the fourth drive signal supplied to the first coil unit 20A to the fourth coil unit 20D can be controlled or adjusted.

[0241] Alternatively, based on the data signals or output signals output from the first sensor 71A to the fourth sensor 71D when the coil frame 110 tilts, the first drive signals to the fourth drive signals supplied to the first coil unit 20A to the fourth coil unit 20D can be controlled or adjusted.

[0242] In this embodiment, the corresponding coil units 20A to 20D and magnet units 31 to 34 can have independent AF driving forces. By controlling or adjusting the independent driving signals supplied to the coil units 20A to 20D, each AF driving force can be controlled, rotation control or tilt control of the coil frame 110 can be performed, and tilt of the coil frame 110 caused by static tilt or motion tilt can be corrected or compensated.

[0243] Even when the guide path of the coil holder 110 or housing 140 (e.g., recess 117 or 47) is not fully implemented according to design specifications, this implementation can prevent a decrease in the reliability of the AF drive and can achieve precise AF drive.

[0244] In addition, the implementation method can eliminate the need for expensive equipment required to verify whether a guide path (e.g., a railway) meets the required specifications, can reduce or eliminate the time and effort required to verify the specifications of the guide path, and can achieve effective component management.

[0245] A lens moving device that uses a "spherical member" as a support member for supporting a coil frame (hereinafter referred to as a "spherical lens moving device") may include a magnet unit for AF driving that is disposed only on one side surface of the coil frame 110 and a coil unit for AF driving that is disposed only on one side portion of the housing 140 (hereinafter referred to as a "comparative example").

[0246] In the comparative example, because the AF driving force is generated only on one side surface of the coil holder 110, the likelihood of tilting of the coil holder 110 or shift of the center of gravity of the coil holder 110 is high.

[0247] In this embodiment, the magnet unit for AF driving can be disposed on two side surfaces of the coil frame 110, and the coil unit for AF driving can be disposed on two side portions of the housing 140. Compared to the comparative example, in this embodiment, AF driving force is generated on two sides of the coil frame, thereby reducing the imbalance of AF driving force and suppressing the occurrence of tilting of the coil frame 110.

[0248] Furthermore, in the embodiment, since AF driving force is generated on both side surfaces of the coil holder 110, AF driving of heavy lenses can be easily achieved.

[0249] Furthermore, in this embodiment, because AF driving force is generated on both side surfaces of the coil holder 110, the AF driving force can be increased, and the driving force required for AF driving can be obtained even when the length of the magnet unit in the optical axis direction is reduced. Reducing the length of the magnet unit in the optical axis direction can reduce the length of the lens moving device in the optical axis direction and can also reduce the height of the camera device.

[0250] exist Figure 8a and Figure 8b In one embodiment, each of the first coil unit 20A to the fourth coil unit 20D is driven independently. In another embodiment, the first coil unit 20A and the second coil unit 20B can be connected to each other, and the third coil unit 20C and the fourth coil unit 20D can be connected to each other. In another embodiment, for example, the first coil unit 20A and the second coil unit 20B can be connected in series, and the third coil unit 20C and the fourth coil unit 20D can be connected in series. In another embodiment, for example, one end of the first coil unit 20A and one end of the second coil unit 20B can be connected to each other, and a first driving signal can be supplied or applied to the other end of the first coil unit 20A and the other end of the second coil unit 20B. Additionally, one end of the third coil unit 20C and one end of the fourth coil unit 20D can be connected to each other, and a second driving signal can be supplied or applied to the other end of the third coil unit 20C and the other end of the fourth coil unit 20D. In this case, the first driving signal and the second driving signal can be independent of each other. In another embodiment, one of the first sensor 71A and the second sensor 71B may be omitted, and one of the third sensor 71C and the fourth sensor 71D may be omitted.

[0251] In another embodiment, two of the first coil units 20A to the fourth coil units 20D may be connected in series, and a first drive signal may be supplied or applied to the two coil units connected in series.

[0252] The remaining two of the first coil units 20A to the fourth coil unit 20D can be connected in series, and the second drive signal can be supplied or applied to the remaining two coil units connected in series. In this case, the first drive signal and the second drive signal can be independent of each other.

[0253] Figure 9a The arrangement of coil 120-1 and position sensors 71A and 71B according to another embodiment is shown, and Figure 9b It shows Figure 9a A cross-sectional view of the embodiment shown.

[0254] Reference Figure 9a and Figure 9b The coil 120-1 may include two coil units 20A and 20B, and the position sensor 70 may include two position sensors 71A and 71B.

[0255] Figure 9a The embodiments shown can correspond to Figure 2 Examples of the third coil unit 20C, fourth coil unit 20D, third sensor 70C, and fourth sensor 70D in the illustrated embodiment are omitted.

[0256] exist Figure 9a In the illustrated embodiment, the coil holder 110 can be moved along the optical axis using two independently driven coil units 20A and 20B. Additionally, in Figure 9a In the embodiment shown, the tilt of the coil frame 110 can be corrected using two independently driven coil units 20A and 20B.

[0257] In another embodiment, Figure 2 The first coil unit 20A, the second coil unit 20B, the first sensor 71A, and the second sensor 71B in the embodiment shown can be omitted.

[0258] exist Figure 9a In this configuration, the second magnet unit 130-2 may not generate a driving force for AF driving, but an attractive force may act between the second magnet unit 130-2 and the second yoke 82, thereby stably supporting the coil frame 110.

[0259] In another embodiment, Figure 9a The second magnet unit 130-2, the second yoke 82, and the second plate 192 in the embodiment shown can be omitted.

[0260] Figure 9c The arrangement of coil 120A-1 and position sensors 71A and 71D according to yet another embodiment is shown, and Figure 9d It shows Figure 9c A cross-sectional view of the embodiment shown. (Refer to...) Figure 9c and Figure 9d The magnet 1130 may include a first magnet unit 130A-1 disposed on a first side surface 110A of the coil frame 110 and a second magnet unit 130A-2 disposed on a third side surface 110C of the coil frame 110.

[0261] The first magnet unit 130A-1 can be a bipolar magnet with two different polarities (e.g., N pole and S pole). The second magnet unit 130A-2 can be a bipolar magnet with two different polarities (e.g., N pole and S pole).

[0262] For example, each of the first magnet unit 130A-1 and the second magnet unit 130A-2 may be a bipolar magnet divided into N and S poles in a first direction. For example, the first surface of the first magnet unit 130A-1 facing the first coil unit 120A-1 may include N and S poles. For example, the first surface of the second magnet unit 130A-2 facing the second coil unit 120A-2 may include N and S poles. For example, the N pole (or S pole) of the first magnet unit 130A-1 (or the second magnet unit 130A-2) may be located in the upper portion, and the S pole (or N pole) of the first magnet unit 130A-1 (or the second magnet unit 130A-2) may be located in the lower portion.

[0263] In another embodiment, each of the first to fourth magnet units may be a quadrupole magnet comprising two N poles and two S poles.

[0264] The coil 120-2 may include a first coil unit 120A-1 disposed on a first side portion 141A of the housing 140 (or on a first plate 191) and a second coil unit 120A-2 disposed on a third side portion 141C of the housing 140 (or on a second plate 192).

[0265] Independent drive signals can be supplied to each of the first coil unit 120A-1 and the second coil unit 120A-2. For example, the electromagnetic force (or driving force) generated between the first coil unit 120A-1 and the first magnet unit 130A-1 and the electromagnetic force (or driving force) generated between the second coil unit 120A-2 and the second magnet unit 130A-2 can be controlled or adjusted independently.

[0266] exist Figure 9c In the embodiment shown, since the magnet unit for AF drive is disposed on the two side surfaces of the coil frame 110 and the coil unit is disposed on the two side portions of the housing 140, AF driving force is generated on the two sides of the coil frame 110, thereby reducing the imbalance of AF driving force and suppressing the occurrence of tilting of the coil frame 110.

[0267] In addition, Figure 9c In the embodiment shown, since AF driving force is generated on both side surfaces of the coil holder 110, AF driving of heavy lenses can be easily achieved.

[0268] In addition, Figure 9cIn the illustrated embodiment, because the AF driving force is generated on both side surfaces of the coil holder 110, the AF driving force can be increased, and the driving force required for AF driving can be obtained even when the length of the magnet unit in the optical axis direction is reduced. Reducing the length of the magnet unit in the optical axis direction can reduce the length of the lens moving device in the optical axis direction and can also reduce the height of the camera device.

[0269] In another embodiment, Figure 9c The first coil unit 120A-1 and the second coil unit 120A-2 shown can be connected to each other and driven in response to a single drive signal. For example, in another embodiment, the first coil unit 120A-1 and the second coil unit 120A-2 can be connected in series. In another embodiment, one end of the first coil unit 120A-1 and one end of the second coil unit 120A-2 can be connected to each other, and a single drive signal can be supplied or applied to the other end of the first coil unit 120A-1 and the other end of the second coil unit 120A-2.

[0270] Figure 10 This is an exploded perspective view of a lens moving device 100-1 according to another embodiment. Figure 11 yes Figure 10 The diagram shows a plan view of the lens-mounted mobile device.

[0271] Reference Figure 10 and Figure 11 The arrangement of the rolling member 150, the recess 118 of the coil holder 110, and the recess 49 of the housing 140 in the lens moving device 100-1 is different. Figures 1 to 9d The arrangement of the rolling member 150, the recess 118 of the coil holder 110, and the recess 49 of the housing 140 in the embodiment shown.

[0272] The rolling member 150 may be disposed between a side surface (e.g., 110C) of the coil holder 110 and a side portion (e.g., 141C) of the housing 140. For example, the first spherical member 151 and the second spherical member 152 of the rolling member 150 may be disposed between the third side surface 110C of the coil holder 110 and the third side portion 141C of the housing 140.

[0273] For example, a recess 118 may be formed in the third side surface 110C of the coil holder 110. The recess 118 may include a first recess 118A and a second recess 118B, which are spaced apart from each other on the third side surface 110C of the coil holder 110.

[0274] For example, a recess 49 may be formed in the inner surface of the third side portion 141C of the housing 140. The recess 49 may correspond to, face, or overlap with the recess 118 of the coil holder 110 in the third direction. The recess 49 may include a first recess 49A and a second recess 49B spaced apart from each other on the inner surface of the third side portion 141C of the housing 140.

[0275] Figure 3a The description of the recess 117 shown can be applied directly or similarly to... Figure 10 and Figure 11 The recess 118 of the coil holder 110 shown.

[0276] At least a portion of the first spherical member 151 may be disposed in and in contact with the first recess 118A of the coil holder 110. At least another portion of the first spherical member 151 may be disposed in and in contact with the first recess 49A of the housing 140.

[0277] At least a portion of the second spherical member 152 may be disposed in the second recess 118B of the coil holder 110 and may contact the second recess 118B. At least another portion of the second spherical member 152 may be disposed in the second recess 49B of the housing 140 and may contact the second recess 49B.

[0278] At least a portion of each of the third magnet unit 33 and the fourth magnet unit 34 may be positioned between the first spherical member 151 and the second spherical member 152. At least a portion of each of the third coil unit 20C and the fourth coil unit 20D may be positioned between the first spherical member 151 and the second spherical member 152.

[0279] In another embodiment, the first spherical member 151 and the second spherical member 152 of the rolling member 150 may be disposed between the first side surface 110A of the coil holder 110 and the first side portion 141A of the housing 140. A recess 118 may be formed in the first side surface 110A of the coil holder 110, and a recess 49 may be formed in the first side portion 141A of the housing 140. Figure 10 and Figure 11 The description of the embodiments shown can be directly or similarly applied to another embodiment in which the rolling member 150 is disposed between the first side surface 110A of the coil holder 110 and the first side portion 141A of the housing 140.

[0280] Figure 12 This is an exploded perspective view of the camera device 200 according to the embodiment.

[0281] Reference Figure 12 The camera device 200 may include a lens module 400, a lens moving device 100, a circuit board 800, and an image sensor 810.

[0282] The camera device 200 may include a filter 610 positioned between the lens module 400 and the image sensor 810. The filter 610 may be disposed below the housing 140 of the lens moving device 100.

[0283] In another embodiment, the camera device 200 may further include at least one of a "base" or a "sensor base (not shown)" disposed between the housing 140 and the circuit board 800. For example, the base may be disposed below the housing 140. The sensor base may be disposed below the base or the housing.

[0284] For example, the filter 610 may be disposed on or attached to the sensor base or one of the sensor bases. The sensor base may include a mounting portion in which the filter 610 is disposed. For example, the sensor base may be attached, bonded, or fixed to the upper surface of the circuit board 800 using adhesive.

[0285] The lens module 400 may include at least one lens and / or lens barrel, and may be coupled to or mounted on the coil holder 110 of the lens mobile device 100. For example, the lens module 400 may include a lens barrel coupled to or mounted on the coil holder 110 and one or more lenses disposed within the lens barrel. Light that has passed through the lens module 400 may pass through a filter and may be incident on the image sensor 810.

[0286] A filter 610 may be disposed between the lens barrel 400 and the image sensor 810. The filter 610 may be used to block light within a specific frequency band that has already passed through the lens barrel 400 from entering the image sensor 810. For example, the filter 610 may be an infrared cut-off filter. However, this disclosure is not limited thereto.

[0287] The circuit board 800 may be disposed below the lens moving device 100. The circuit board 800 may be disposed below the housing 140. The circuit board 800 may be disposed below the base or sensor base. The housing 140 may be attached to the upper surface of the circuit board 800 by means of adhesive 612. In another embodiment, a base or sensor base may be further provided, and the base or sensor base may be attached to the circuit board 800 by means of adhesive 612.

[0288] Image sensor 810 can be set or mounted on circuit board 800. Image sensor 810 can be coupled to or mounted on the upper surface of circuit board 800. Image sensor 810 can be electrically connected to circuit board 800.

[0289] Image sensor 810 can receive an image contained in light introduced into image sensor 810 through lens moving device 100, and can convert the received image into an electrical signal. Circuit board 800 may include a plurality of terminals 811 corresponding to terminals P1 to P16 of circuit board 190. Terminals P1 to P16 of circuit board 190 of lens moving device 100 may be electrically connected to the plurality of terminals 811 of circuit board 800 using solder or conductive adhesive.

[0290] Image sensor 810 can be positioned such that lens module 400 is aligned with the optical axis. Therefore, image sensor 810 can capture light that has passed through lens module 400. Image sensor 810 can output the incident light as an image. For example, image sensor 810 can be a charge-connected device (CCD), metal-oxide-semiconductor (MOS), CPD, or CID. However, the type of image sensor is not limited to these. Filters and image sensor 810 can be spaced apart from each other so that they face each other in a first direction.

[0291] Camera device 200 may include controller 830. Controller 830 may be disposed on or mounted on circuit board 800. Controller 830 may be electrically connected to circuit board 800. Controller 830 may be electrically connected to position sensor 70. For example, controller 830 may be electrically connected to circuit board 190.

[0292] The controller 830 can supply power signals to the first sensor 71A through the fourth sensor 71D, and can transmit clock signals SCL and data signals SDA between the first sensor 71A through the fourth sensor 71D and the controller 830. The controller 830 can detect the tilt of the coil frame 110 based on the data signal SDA transmitted from the first sensor 71A through the fourth sensor 71D. In addition, the controller 830 can control the first sensor 71A through the fourth sensor 71D to adjust the drive signals I1 through I4 supplied to the first coil unit 20A through the fourth coil unit 20D in order to correct the tilt of the coil frame 110.

[0293] In another embodiment, the above-described operation or function of the controller 830 of the camera device 200 can be performed by the controller 780 of the optical instrument 200A, which will be described later.

[0294] The camera device 200 may include a motion sensor 820 disposed on a circuit board 800. The motion sensor 820 may be electrically connected to a controller 830. The motion sensor 820 may output rotational angular velocity information generated by the motion of the camera device 200. The motion sensor 820 may be implemented as a dual-axis, three-axis, four-axis, or five-axis gyroscope sensor or an angular velocity sensor.

[0295] Furthermore, for the purpose of forming an image of an object existing in space by using reflection, refraction, absorption, interference, and diffraction as properties of light, for the purpose of increasing visibility, for the purpose of recording and reproducing images using lenses, or for the purpose of optical measurement or image propagation or transmission, the camera device according to the embodiment may be included in an optical instrument.

[0296] For example, the optical instrument according to the embodiments may be a cellular phone, mobile phone, smartphone, portable terminal, portable smart device, digital camera, laptop computer, digital broadcasting terminal, personal digital assistant (PDA), portable multimedia player (PMP), navigation device, etc., but is not limited thereto and may also be any device used to capture images or pictures.

[0297] Figure 13 This is a perspective view of the optical instrument 200A according to the embodiment, and Figure 14 yes Figure 13 The diagram shows the configuration of the optical instrument 200A.

[0298] Reference Figure 13 and Figure 14 The optical instrument 200A may include a main body 850, a wireless communication unit 710, an A / V input unit 720, a sensing unit 740, an input / output unit 750, a memory 760, an interface unit 770, a controller 780, and a power supply unit 790.

[0299] Figure 13 The body 850 shown may have a strip shape, but is not limited to it, and may be any of various types, such as sliding, folding, swinging or rotating, wherein two or more sub-bodies are connected in a manner that allows them to move relative to each other.

[0300] The body 850 may include a housing (shell, cover, cap, etc.) defining its appearance. In the example, the body 850 may be divided into a front housing 851 and a rear housing 852. Various electronic components of the terminal may be installed in the space defined between the front housing 851 and the rear housing 852.

[0301] The wireless communication unit 710 may include one or more modules that enable wireless communication between the optical instrument 200A and the wireless communication system, or between the optical instrument 200A and the network in which the optical instrument 200A resides. In the example, the wireless communication unit 710 may include a broadcast receiving module 711, a mobile communication module 712, a wireless internet module 713, a near-field communication module 714, and a location information module 715.

[0302] The audio / video (A / V) input unit 720 is used to input audio or video signals and may include a camera 721 and a microphone 722.

[0303] Camera 721 may include a camera device according to an embodiment.

[0304] The sensing unit 740 can sense the current state of the optical instrument 200A, such as whether the optical instrument 200A is on or off, its position, the presence or absence of user touch, its orientation, or its acceleration / deceleration. It can also generate sensing signals to control the operation of the optical instrument 200A. For example, when the optical instrument 200A is a slider phone, it can detect whether the slider is on or off. Additionally, the sensing unit 740 is used to sense whether power is being supplied from the power supply unit 790 or whether the interface unit 770 is connected to an external device.

[0305] The input / output unit 750 is used to generate visual, auditory, or tactile inputs or outputs. The input / output unit 750 can generate input data to control the operation of the optical instrument 200A, and can display information processed in the optical instrument 200A.

[0306] The input / output unit 750 may include a keyboard unit 730, a display module 751, a sound output module 752, and a touch screen panel 753. The keyboard unit 730 can generate input data in response to input to the keyboard.

[0307] Display module 751 may include a plurality of pixels whose colors change in response to electrical signals. In the example, display module 751 may include at least one of a liquid crystal display, a thin-film transistor liquid crystal display, an organic light-emitting diode, a flexible display, or a 3D display.

[0308] The audio output module 752 can output audio data received from the wireless communication unit 710 in call signal receiving mode, call mode, recording mode, voice recognition mode or broadcast receiving mode, or it can output audio data stored in the memory 760.

[0309] The touchscreen panel 753 can convert the capacitance change caused by the user touching a specific area of ​​the touchscreen into an electrical input signal.

[0310] The memory 760 can store programs for processing and control of the controller 780, and can temporarily store input / output data (e.g., phone books, messages, audio, still images, pictures, and moving images). For example, the memory 760 can store images captured by the camera 721, such as pictures or moving images.

[0311] Interface unit 770 serves as a connection path between optical instrument 200A and external devices. Interface unit 770 can receive data or power from external devices and transmit it to corresponding components within optical instrument 200A, or it can transmit data from within optical instrument 200A to external devices. For example, interface unit 770 may include a wired / wireless headphone port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video input / output (I / O) port, and a headphone port.

[0312] The controller 780 can control the overall operation of the optical instrument 200A. For example, the controller 780 can perform control and processing related to voice calls, data communications, and video calls.

[0313] The controller 780 may include a multimedia module 781 for multimedia playback. The multimedia module 781 may be located in the controller 180 or may be configured to be separate from the controller 780.

[0314] The controller 780 can perform pattern recognition processing, through which handwriting or drawing input to the touchscreen is perceived as characters and images.

[0315] The power supply unit 790 can supply the power required to operate the corresponding components when it receives external or internal power under the control of the controller 780.

[0316] The features, structures, and effects described in the above embodiments are included in at least one embodiment of this disclosure, but are not necessarily limited to only one embodiment. Furthermore, the features, structures, and effects illustrated in the respective embodiments can be combined with other embodiments or modified by those skilled in the art. Therefore, anything related to such combinations and modifications should be interpreted as falling within the scope of this disclosure. Industrial applicability

[0317] The implementation can be applied to lens moving devices, camera devices, and optical instruments that are capable of correcting or compensating for the tilt of the coil frame caused by static tilt or motion tilt.

Claims

1. A lens-mounted device, comprising: case; A coil holder, which is disposed within the housing; A magnet, which is mounted on the coil frame; as well as A coil, facing the magnet, so as to move the coil frame along a first direction parallel to the optical axis through interaction with the magnet. The magnet includes a first magnet disposed on one side surface of the coil frame and a second magnet disposed on the other side surface of the coil frame. The coil includes a first coil facing the first magnet in a second direction perpendicular to the first direction, and a second coil facing the second magnet in a third direction perpendicular to both the first and second directions. In this configuration, an independent drive signal is supplied to each of the first coil and the second coil.

2. The lens moving device according to claim 1, comprising a spherical member disposed between the coil frame and the housing.

3. The lens moving device according to claim 1, comprising a position sensor configured to detect displacement of the coil frame. in, The position sensor includes a first sensor configured to detect the first magnet and a second sensor configured to detect the second magnet.

4. The lens moving device according to claim 1, wherein, The first magnet includes a first magnet unit and a second magnet unit. The second magnet includes a third magnet unit and a fourth magnet unit. The first coil includes a first coil unit facing the first magnet unit and a second coil unit facing the second magnet unit. The second coil includes a third coil unit facing the third magnet unit and a fourth coil unit facing the fourth magnet unit. Independent drive signals are supplied to each of the first to fourth coil units.

5. The lens moving device according to claim 4, comprising a position sensor configured to detect displacement of the coil frame. in, The position sensor includes a first sensor configured to detect the first magnet unit, a second sensor configured to detect the second magnet unit, a third sensor configured to detect the third magnet unit, and a fourth sensor configured to detect the fourth magnet unit.

6. The lens moving device according to claim 5, wherein, Each of the first to the fourth sensors is a driver IC that includes a Hall sensor.

7. The lens moving device according to claim 5, wherein, The first sensor supplies a first drive signal to the first coil unit. The second sensor supplies a second drive signal to the second coil unit. The third sensor supplies a third driving signal to the third coil unit, and The fourth sensor supplies a fourth driving signal to the fourth coil unit.

8. The lens moving device according to claim 4, comprising: A circuit board, which is disposed on the housing and electrically connected to the first coil unit to the fourth coil unit; as well as A magnetic yoke, which is disposed on the circuit board to generate an attractive force with the magnet.

9. The lens moving device according to claim 4, wherein, Each of the first coil unit and the second coil unit has a ring shape wound around a first axis parallel to the second direction, and Each of the third coil unit and the fourth coil unit has a ring shape wound around a second axis parallel to the third direction.

10. The lens moving device according to claim 4, wherein, The first coil unit and the second coil unit are positioned relative to each other with respect to a first reference line, which is a straight line parallel to the second direction and passing through the optical axis. The third coil unit and the fourth coil unit are positioned relative to each other with respect to a second reference line, which is a straight line parallel to the third direction and passing through the optical axis.

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