Lens driving device, camera module, and optical device

Abstract

Embodiments of the present invention relate to a lens driving device including a base, a housing provided on the base, a substrate provided between the base and the housing, a holder provided in the housing, a first magnet and a first coil for moving the housing and the holder in an optical axis direction, a second magnet provided in the holder, and a second coil provided between the housing and the substrate and placed in a position corresponding to the second magnet, wherein the second coil moves the holder in a direction perpendicular to the optical axis direction, a first area of the substrate is connected to the housing, and a second area of the substrate is connected to the base, and the first area of the substrate moves according to a movement of the housing.

Description

Technical Field

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

[0002] With the widespread availability of various portable terminals and the commercialization of wireless internet services, consumer demand for portable terminals is also diversifying, leading to the installation of various types of add-ons in portable terminals.

[0003] Among the various types of add-on devices, a typical example is a camera module for taking photos or videos of a subject. Simultaneously, an autofocus function for automatically adjusting the focus based on the distance to the subject is applied to the current camera module. Additionally, a hand-shake correction function is also applied to compensate for user hand tremors.

[0004] Recently, the trend for cameras used in portable devices has been towards miniaturization and higher resolution. However, it is difficult to implement autofocus and image stabilization functions in high-resolution, small camera modules because of the large aperture of the lenses and the small size of the entire module. Summary of the Invention

[0005] Technical issues

[0006] This embodiment aims to provide a lens driving device that can achieve autofocus and image stabilization even in a small camera module with high pixel count.

[0007] Technical solution

[0008] The lens driving device according to this embodiment includes: a base; a housing disposed on the base; a substrate disposed between the base and the housing; a retainer disposed inside the housing; a first magnet and a first coil for moving the housing and the retainer along an optical axis; a second magnet disposed in the retainer; and a second coil disposed between the housing and the substrate and at a position corresponding to the second magnet, wherein the second coil moves the retainer in a direction perpendicular to the optical axis, wherein a first region of the substrate is connected to the housing, wherein a second region of the substrate is connected to the base, and wherein the first region of the substrate can move according to the movement of the housing.

[0009] The first region includes a body portion in which a second coil is disposed, and the substrate may include an elastic connecting portion connecting the first region and the second region.

[0010] The flexible connection part can connect the main body part and the second area.

[0011] The first region may include an end portion connected to the housing and a resilient connecting portion connecting the end portion and the body portion.

[0012] The lens driving device according to this embodiment includes: a base; a first frame disposed on the base; a substrate disposed between the base and the first frame; a second frame disposed inside the first frame; a third frame disposed between the first frame and the second frame; a second magnet disposed in the second frame; and a second coil disposed between the first frame and the substrate and at a position corresponding to the second magnet, wherein the second coil causes the second frame to move in a direction perpendicular to the optical axis, wherein the first frame moves in the optical axis direction and the second frame moves in a direction perpendicular to the optical axis direction, and wherein the substrate can move according to the movement of the first frame.

[0013] The substrate includes: a first region connected to a base; a second region connected to a first frame; and an elastic connection portion connecting the first region and the second region, wherein the elastic connection portion of the substrate may include a flexible portion.

[0014] The elastic connection portion of the substrate can have a shape that is bent multiple times, wherein the elastic connection portion of the substrate can overlap with the second coil in the optical axis direction.

[0015] The substrate can be formed into a shape that is symmetrical about the optical axis.

[0016] The mover includes a first frame to a third frame, the first frame including a housing, the second frame including a retainer, and the third frame including a frame; and the lens driving device may include a first spherical member disposed between the housing and the frame and a second spherical member disposed between the frame and the retainer.

[0017] The housing includes a first groove in which a first spherical member is disposed, the first spherical member contacting the housing at two or more points, and the first groove of the housing may be formed to be longer than the diameter of the first spherical member in a first direction perpendicular to the optical axis.

[0018] The frame includes a first groove formed on the upper surface of the frame and a second spherical member disposed in the first groove. The first groove of the frame may be formed to be longer than the diameter of the second spherical member in the optical axis direction and in a second direction perpendicular to the first direction.

[0019] The frame includes a second groove formed on the lower surface of the frame and a first spherical member disposed in the second groove. The second groove of the frame is formed in a shape corresponding to at least a portion of the first spherical member. The retainer includes a groove in which the second spherical member is disposed, and the groove of the retainer can be formed in a shape corresponding to at least a portion of the second spherical member.

[0020] The first spherical guide frame moves relative to the housing in a first direction perpendicular to the optical axis, and the second spherical guide can guide the retainer to move relative to the frame in a second direction perpendicular to both the optical axis and the first direction.

[0021] The lens driving device may include: a first coil disposed in a housing; and a first magnet disposed in a base.

[0022] The first coil can be electrically connected to the substrate.

[0023] The lens driving device may include a first magnetic yoke, which is disposed in the housing and inside the first coil.

[0024] The housing may include: a lower plate; and a side plate extending from the lower plate, wherein the second coil is disposed on the lower surface of the lower plate of the housing, and wherein a substrate may be connected to the lower surface of the lower plate of the housing.

[0025] The lens driving device may include a second magnetic yoke disposed inside the second coil on the lower surface of the lower plate of the housing.

[0026] The lens driving device includes a third spherical member that contacts the housing and the base, wherein the third spherical member can guide the housing to move relative to the base along the optical axis.

[0027] The lens driving device includes: a cover member including an upper plate and a side plate extending from the upper plate; and a spacer disposed between the cover member and a base, wherein the housing includes a second groove in which a third spherical member is disposed, and wherein the spacer may include an upper plate and a protrusion extending downward from the upper plate of the spacer, and at least a portion of the protrusion is inserted into the second groove of the housing.

[0028] The lens driving device includes: a driver IC disposed in a substrate and electrically connected to a first coil, and including a Hall element for detecting a first magnet; and a Hall sensor disposed in the substrate for detecting a second magnet.

[0029] The lens driving device includes a third spherical member that contacts the housing and the base. The third spherical member includes a third-first spherical member disposed on one side of the first coil and a third-second spherical member disposed on the other side of the first coil. The base includes a first surface facing the housing and a groove recessed into the first surface of the base. The third-first spherical member is disposed on the first surface of the base, and the third-second spherical member can be disposed in the groove of the base.

[0030] In the area where the third-first spherical member is set on the first surface of the base, a groove may not be formed.

[0031] The housing may include a protrusion that projects toward a first surface toward the base, and a third spherical member may be disposed in the protrusion of the housing.

[0032] The lens driving device includes: a third magnet disposed on a base; and a fourth magnet disposed in a housing, wherein the fourth magnet can be disposed at a position corresponding to the third magnet, such that the attractive force acts together with the third magnet.

[0033] The lens driving device includes: a housing cover connected to the housing and disposed above the retainer; a fifth magnet disposed in the housing cover; and a sixth magnet disposed in the retainer, wherein the frame and the second spherical member are disposed below the retainer, and wherein the sixth magnet can be disposed at a position corresponding to the fifth magnet, such that the repulsive force acts together with the fifth magnet.

[0034] The lens driving device may include a second magnetic yoke disposed in the base at a position corresponding to the second magnet, such that the attractive force acts together with the second magnet.

[0035] The camera module according to this embodiment may include: a printed circuit board; an image sensor disposed in the printed circuit board; a lens driving device disposed on a pre-printed circuit board; and a lens coupled to a second frame of the lens driving device.

[0036] The optical device according to this embodiment may include: a main body; a camera module disposed on the main body; and a display disposed in the main body and outputting at least one of an image and a video captured by the camera module.

[0037] The lens driving device according to this embodiment includes: a base; a housing disposed inside the base; a retainer disposed inside the housing; a first magnet and a first coil for moving the housing and the retainer along an optical axis; a second magnet disposed in the retainer; a second coil disposed in the housing and at a position corresponding to the second magnet; and a substrate connecting the housing and the base, wherein the substrate includes a first connecting portion connected to the base, a second connecting portion connected to the housing, and a connecting portion connecting the first connecting portion and the second connecting portion, wherein the connecting portion of the substrate includes a flexible portion, and wherein the second connecting portion of the substrate can be connected to the second coil via a conductive member.

[0038] The lens driving device according to this embodiment includes: a base; a first frame disposed on the base; a second frame disposed inside the first frame; a first magnet and a first coil, the first magnet being disposed in either the base or the first frame, and the first coil being disposed in the other of the base and the first frame; a second magnet disposed in the second frame; a first frame cover connected to the first frame and disposed on the second frame; a first repulsive magnet disposed in the second frame; and a second repulsive magnet disposed in the first frame cover and at a position corresponding to the first repulsive magnet, wherein a repulsive force can be generated between the first repulsive magnet and the second repulsive magnet along the optical axis.

[0039] It may include a third frame positioned between the first frame and the second frame.

[0040] It may include a fifth magnet set in the third frame.

[0041] Beneficial effects

[0042] This embodiment enables the miniaturization and high-resolution of camera modules, including lens driving devices.

[0043] In addition, it can achieve precise autofocus and image stabilization. Attached Figure Description

[0044] Figure 1 This is a perspective view of the lens driving device according to this embodiment.

[0045] Figure 2 From Figure 1 The cross-sectional view observed by AA in the image.

[0046] Figure 3 From Figure 1 The cross-sectional view observed by line BB in the diagram.

[0047] Figure 4 From Figure 1 A cross-sectional view of CC observed in the image.

[0048] Figure 5 yes Figure 1 The three-dimensional diagram in the image omits the state of the cover components.

[0049] Figure 6 This is an exploded perspective view of the lens driving device according to this embodiment.

[0050] Figure 7 This is a perspective view illustrating the housing and related configuration of the lens driving device according to this embodiment.

[0051] Figure 8 It is viewed from another direction. Figure 7 A three-dimensional image.

[0052] Figure 9 This is a plan view illustrating the substrate and related configuration of the lens driving device according to this embodiment.

[0053] Figure 10 This is a perspective view illustrating the connection state of the housing and the substrate of the lens driving device according to this embodiment.

[0054] Figure 11 This is a plan view illustrating the arrangement structure of the housing and the first spherical member of the lens driving device according to this embodiment.

[0055] Figure 12 It is illustrated in Figure 11 A plan view showing the status of the movers arranged in the middle.

[0056] Figure 13 This is a bottom view of the mover and related configuration of the lens driving device according to this embodiment.

[0057] Figure 14 It is illustrated in Figure 12 A plan view showing the state in which the second spherical component is provided, an enlarged view of the groove of the mover, and a view of a modified embodiment.

[0058] Figure 15 It is illustrated in Figure 14 A plan view showing the state of the retainer.

[0059] Figure 16 This is a bottom view of the retainer and related configuration of the lens driving device according to this embodiment, and an enlarged view of the groove of the retainer.

[0060] Figure 17 This is a plan view of some configurations of the lens driving device according to this embodiment.

[0061] Figure 18 This is a perspective view of the lens driving device according to this embodiment, omitting the cover member and the spacer.

[0062] Figure 19 This diagram illustrates the OIS drive of the lens driving device according to this embodiment.

[0063] Figure 20 This diagram illustrates the AF drive of the lens drive device according to this embodiment.

[0064] Figure 21 The illustration shows a plan view and an enlarged view of the third spherical component and related configuration of the lens driving device according to a modified embodiment.

[0065] Figure 22 It is illustrated in Figure 21 The diagram shows a third spherical component and another modified embodiment of the related configuration.

[0066] Figure 23 and Figure 24 This is a perspective view illustrating the arrangement of the third and fourth magnets of the lens driving device according to a modified embodiment.

[0067] Figure 25 The illustration shows a perspective view and a partially enlarged perspective view of the arrangement of the housing cover, the fifth magnet, and the sixth magnet of the lens driving device according to a modified embodiment.

[0068] Figure 26 (a) is a view illustrating the housing cover and the fifth magnet, and (b) is a view illustrating the arrangement of the sixth magnet.

[0069] Figure 27 This is a view illustrating the arrangement of the second magnetic yoke of the lens driving device according to a modified embodiment.

[0070] Figure 28 This is an exploded perspective view of the camera module according to this embodiment.

[0071] Figure 29 This is a perspective view of the optical device according to this embodiment. Detailed Implementation

[0072] In the following, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0073] However, the technical concept of the present invention is not limited to the embodiments to be described, but can be implemented in various forms, and within the scope of the technical concept of the present invention, one or more constituent elements can be selectively combined or substituted between the various embodiments.

[0074] Furthermore, unless explicitly defined and described, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that are commonly understood by those skilled in the art, and commonly used terms, such as those defined in dictionaries, may be interpreted in the context of the relevant art.

[0075] Furthermore, the terminology used in this specification is for describing embodiments and is not intended to limit the invention.

[0076] In this specification, unless specifically stated in the phrase, the singular form may include the plural form, and when described as “at least one (or more than one) of A, B and C”, it may include one or more of all combinations that can be combined with A, B and C.

[0077] Furthermore, when describing the components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended only to distinguish the components from other components, and do not limit the nature, order, or sequence of the components.

[0078] Furthermore, when a component is described as “connected,” “linked,” or “interconnected” to another component, the component is not only directly connected, linked, or interconnected with other components, but may also include situations where the “connection,” “linking,” or “interconnection” is made due to another component between other components.

[0079] Additionally, when described as being formed or arranged "above" or "below" each component, "above" or "below" means not only that the two components are in direct contact, but also that one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," it can include not only the meaning of an upward direction based on a component, but also the meaning of a downward direction based on a component.

[0080] As used below, “optical axis direction” is defined as the optical axis direction of the lens and / or image sensor connected to the lens drive device.

[0081] In the following text, "vertical direction" can refer to a direction parallel to the optical axis. The vertical direction can correspond to the "z-axis direction." In the following text, "horizontal direction" can refer to a direction perpendicular to the vertical direction. That is, the horizontal direction can be perpendicular to the optical axis. Therefore, the horizontal direction can include both the "x-axis direction" and the "y-axis direction."

[0082] The term "autofocus (AF) function" as used below is defined as follows: by adjusting the distance from the image sensor by moving the lens along the optical axis according to the distance to the object, the image sensor can automatically focus on the object, thereby enabling the image sensor to obtain a sharp image of the object. "Autofocus" can also be used interchangeably with "AF (autofocus)".

[0083] The "shake correction function" used below is defined as a function that moves or tilts the lens in a direction perpendicular to the optical axis to counteract vibrations (motions) generated in the image sensor by external forces. "Shake correction" can be used interchangeably with "OIS (Optical Image Stabilization)" or "Optical Image Stabilization".

[0084] In the following description, the lens driving device according to this embodiment will be described with reference to the accompanying drawings.

[0085] Figure 1 This is a perspective view of the lens driving device according to this embodiment; Figure 2 From Figure 1 A cross-sectional view observed by AA in the image; Figure 3 From Figure 1 A cross-sectional view observed along line BB; Figure 4 From Figure 1 A cross-sectional view of CC observed in the image; Figure 5 yes Figure 1 The three-dimensional diagram in the image omits the state of the cover components; Figure 6 This is an exploded perspective view of the lens driving device according to this embodiment; Figure 7 This is a perspective view illustrating the housing and related configuration of the lens driving device according to this embodiment; Figure 8 It is viewed from another direction. Figure 7 A three-dimensional image; Figure 9 This is a plan view illustrating the substrate and related configuration of the lens driving device according to this embodiment; Figure 10 This is a perspective view illustrating the connection state of the housing and the substrate of the lens driving device according to this embodiment; Figure 11 This is a plan view illustrating the arrangement structure of the housing and the first spherical member of the lens driving device according to this embodiment; Figure 12 It is illustrated in Figure 11 A plan view showing the status of the movers arranged in the middle; Figure 13 This is a bottom view of the mover and related configuration of the lens driving device according to this embodiment; Figure 14 It is illustrated in Figure 12 A plan view showing the state in which the second spherical component is provided, an enlarged view of the groove of the mover, and a view of the modified embodiment; Figure 15 It is illustrated in Figure 14 A plan view showing the state of the retainer; Figure 16This is a bottom view of the retainer and related configuration of the lens driving device according to this embodiment, and an enlarged view of the groove of the retainer; Figure 17 These are plan views of some configurations of the lens driving device according to this embodiment; Figure 18 This is a perspective view of the lens driving device according to this embodiment, omitting the cover member and the spacer. Figure 19 This is a diagram illustrating the OIS drive of the lens driving device according to this embodiment; and Figure 20 This diagram illustrates the AF drive of the lens drive device according to this embodiment.

[0086] The lens driving device 10 may include a stator 100. The stator 100 can move the first mover 200 and the second mover 300. The stator 100 can accommodate the first mover 200 and the second mover 300. When the first mover 200 and the second mover 300 move, the stator 100 may be a relatively fixed part.

[0087] The lens drive device 10 may include a base 110. The stator 100 may include a base 110. The base 110 may be disposed outside the housing 210. The base 110 may be disposed outside the retainer 310. The base 110 may accommodate at least a portion of the housing 210. The base 110 may accommodate at least a portion of the retainer 310. The base 110 may be coupled to the cover member 130. The base 110 may be spaced apart from the retainer 310. At least a portion of the base 110 may be spaced apart from the housing 210.

[0088] The base 110 may include a lower plate and side plates. The base 110 may include a lower plate disposed below the housing 210 and a plurality of side plates extending upward from the lower plate. The plurality of side plates of the base 110 may be configured to surround the housing 210.

[0089] The base 110 may include a groove 111. The groove 111 may accommodate a third spherical member 530. The groove 111 may be a groove that accommodates the third spherical member. The groove 111 may be recessed into the inner surface of the side plate of the base 110. The depth of the groove 111 may be less than the diameter of the third spherical member 530. The third spherical member 530 may contact the groove 111 at at least two or more points. The third spherical member 530 may contact the groove 111 at three points. As a modified embodiment, the third spherical member 530 may contact the groove 111 at only one point.

[0090] The lens driving device may include a first magnet 120. The stator 100 may include the first magnet 120. The first magnet 120 may be disposed in the base 110. The first magnet 120 may face the first coil 220. The first magnet 120 may be configured to face the first coil 220. The first magnet 120 may electromagnetically interact with the first coil 220. The first magnet 120 may move the housing 210 and the holder 310 along the optical axis. The first magnet 120 may be an AF driving magnet. The first magnet 120 may move the housing 210 and the holder 310 along the optical axis through interaction with the first coil 220. The first magnet 120 may move the housing 210 and the holder 310 along the optical axis through electromagnetic interaction with the first coil 220.

[0091] The lens drive unit 10 may include a cover member 130. The stator 100 may include a cover member 130. The cover member 130 may cover the base 110. The cover member 130 may be configured to surround the base 110. The cover member 130 may cover the base 110. The cover member 130 may cover the housing 210. The cover member 130 may cover the retainer 310. The cover member 130 may include a "cover". The cover may support the entire structure. The cover member 130 may be made of a non-magnetic material. The cover member 130 may be formed of metal. The cover member 130 may be formed of a metal plate. The cover member 130 may be connected to the ground portion of the printed circuit board 50. Thus, the cover member 130 may be grounded. The cover member 130 may block electromagnetic interference (EMI). In this case, the cover member 130 may be referred to as an "EMI shield".

[0092] The cover member 130 may include an upper plate 131. The cover member 130 may include a side plate 132. The cover member 130 may include an upper plate 131 and a side plate 132 extending from the upper plate 131. The side plate 132 of the cover member 130 may be coupled to a base. The cover member 130 may include an upper plate 131 containing holes and a side plate 132 extending downward from the outer periphery or edge of the upper plate 131. The side plate 132 may include multiple side plates. The side plate 132 may include four side plates.

[0093] The lens driving device 10 may include a spacer 140. The stator 100 may include the spacer 140. The spacer 140 may be disposed between the cover member 130 and the base 110. The spacer 140 may be disposed within the base 110. The spacer 140 may be coupled to the base 110. The spacer 140 may include an upper plate 141. The spacer 140 may include a protrusion 142. The protrusion 142 may protrude downward from the upper plate 141. At least a portion of the protrusion 142 may be inserted into a second recess 212 of the housing 210. Thus, the protrusion 142 of the spacer 140 can prevent the third spherical member 530 disposed in the second recess 212 of the housing 210 from separating upward. The spacer 140 may be assembled to prevent the spherical member and the magnet from falling out.

[0094] The lens driving device 10 may include a first mover 200. The first mover 200 may be disposed inside the stator 100. The first mover 200 may be movably disposed inside the stator 100. The first mover 200 may move relative to the stator 100 along the optical axis. At this time, a second mover 300 may move together with the first mover 200. The first mover 200 may move to drive the autofocus (AF). The first mover 200 may be an AF mover.

[0095] The lens driving device 10 may include a housing 210. The first mover 200 may include a housing 210. The housing 210 may be disposed inside the base 110. The housing 210 may be disposed outside the holder 310. The housing 210 may house the holder 310. The first coil 220 and the second coil 230 may be disposed in the housing 210. The housing 210 may be movable along the optical axis. The housing 210 may be movable during AF driving.

[0096] The housing 210 may include a first groove 211. A first spherical member 510 may be disposed in the first groove 211. The first groove 211 may be a groove for receiving the first spherical member. The first groove 211 may be formed to be longer than the diameter of the first spherical member 510 in a first direction perpendicular to the optical axis. The first groove 211 may guide the first spherical member 510 to move along the first direction perpendicular to the optical axis.

[0097] The housing 210 may include a second groove 212. A third spherical member 530 may be disposed in the second groove 212. The second groove 212 may be a groove for receiving the third spherical member. The second groove 212 may be formed on the outer surface of the housing 210. The housing 210 may include a first surface of a side plate facing the base 110. The second groove 212 may be recessedly formed on the first surface of the housing 210. The second groove 212 may extend along the optical axis. The second groove 212 may be formed to be longer than the diameter of the third spherical member 530 in the optical axis direction. The second groove 212 may guide the third spherical member 530 to move along the optical axis direction.

[0098] The housing 210 may include a lower plate 213. The lower plate 213 may be disposed between the retainer 310 and the base 110. The lower plate 213 may be disposed below the retainer 310 and the mover 330. A lower stop member contacting the base 110 may be formed on the lower surface of the lower plate 213. The lower stop member may be formed in either or more of the housing 210 and the base 110. The lower stop member may mechanically restrict downward movement of the housing 210.

[0099] The housing 210 may include a side plate 214. The side plate 214 may extend from the lower plate 213. The side plate 214 may include multiple side plates. The side plate 214 may include four side plates. A first coil 220 may be disposed in the side plate 214. A third spherical member 530 may be disposed in the side plate 214.

[0100] The lens driving device 10 may include a first coil 220. The first mover 200 may include the first coil 220. The first coil 220 may face the first magnet 120. The first coil 220 may be configured to face the first magnet 120. The first coil 220 may move the housing 210 and the holder 310 along the optical axis. The first coil 220 may be an AF driving coil. The first coil 220 may move the housing 210 and the holder 310 along the optical axis through interaction with the first magnet 120. The first coil 220 may move the housing 210 and the holder 310 along the optical axis through electromagnetic interaction with the first magnet 120. The first coil 220 may be disposed within the housing 210. The first coil 220 may be electrically connected to the substrate 400.

[0101] The lens driving device 10 may include a second coil 230. The first mover 200 may include the second coil 230. The second coil 230 may be disposed in the housing 210. The second coil 230 may be disposed at a position corresponding to the second magnet 320. The second coil 230 may move the holder 310 in a direction perpendicular to the optical axis. The second coil 230 may be an OIS driving coil. The second coil 230 may move the holder 310 in a direction perpendicular to the optical axis through interaction with the second magnet 320. The second coil 230 may move the holder 310 in a direction perpendicular to the optical axis through electromagnetic interaction with the second magnet 320. The second coil 230 may be disposed on the lower surface of the lower plate 213 of the housing 210.

[0102] The second coil 230 may include multiple coils. The second coil 230 may include four coils. The second coil 230 may include second-first coils to second-fourth coils 231, 232, 233, and 234. The second coil 230 may include an OIS-X coil that moves the holder 310 along the x-axis (first direction). The second coil 230 may include an OIS-Y coil that moves the holder 310 along the y-axis (a second direction perpendicular to the first direction). In this case, the optical axis may be the z-axis. The second-first coil 231 and the second-second coil 232 can move the holder 310 along the x-axis. The second-first coil 231 and the second-second coil 232 can be electrically connected. As a modified embodiment, the second-first coil 231 and the second-second coil 232 can be electrically separated and electrically controlled, respectively. The second-third coil 233 and the second-fourth coil 234 can move the holder 310 along the y-axis. The second-third coil 233 and the second-fourth coil 234 can be electrically connected. As a modified implementation, the second-third coil 233 and the second-fourth coil 234 can be electrically separated and electrically controlled, respectively.

[0103] The second-first coil 231 can be a first unit coil. The second-second coil 232 can be a second unit coil. The second-third coil 233 can be a third unit coil. The second-fourth coil 234 can be a fourth unit coil.

[0104] The lens driving device 10 may include a first magnetic yoke 240. The first mover 200 may also include the first magnetic yoke 240. The first magnetic yoke 240 may be disposed within the housing 210. The first magnetic yoke 240 may be disposed inside the first coil 220. The first magnetic yoke 240 may be formed of a magnetic material. The first magnetic yoke 240 may be formed of metal. At least a portion of the first magnetic yoke 240 may face the first magnet 120. The first magnetic yoke 240 may be disposed at a position corresponding to the first magnet 120. An attractive force may act between the first magnetic yoke 240 and the first magnet 120. Thus, the housing 210 may press the third spherical member 530 toward the base 110. Therefore, contact between the housing 210 and the third spherical member 530, and contact between the base 110 and the third spherical member 530, can be maintained. The first magnetic yoke 240 may be an AF magnetic yoke.

[0105] The lens driving device 10 may include a second magnetic yoke 250. The first mover 200 may include the second magnetic yoke 250. The second magnetic yoke 250 may be disposed on the lower surface of the lower plate 213 of the housing 210. The second magnetic yoke 250 may be disposed inside the second coil 230. In a modified embodiment, the second magnetic yoke 250 may be larger than the second coil 230. In this case, the second magnetic yoke 250 may be disposed between the second coil 230 and the housing 210. The second magnetic yoke 250 may be formed of a magnetic material. The second magnetic yoke 250 may be formed of metal. At least a portion of the second magnetic yoke 250 may face the second magnet 320. The second magnetic yoke 250 may be disposed at a position corresponding to the second magnet 320. An attractive force may act between the second magnetic yoke 250 and the second magnet 320. Thus, the mover 330 may press the first spherical member 510 toward the housing 210. Therefore, contact between the mover 330 and the first spherical member 510 and contact between the housing 210 and the first spherical member 510 can be maintained. The second magnetic yoke 250 can be an OIS magnetic yoke.

[0106] The lens driving device 10 may include a second mover 300. The second mover 300 may be disposed inside the stator 100. The second mover 300 may be movably disposed inside the first stator 100. The second mover 300 may be disposed inside the first mover 200. The second mover 300 may be movably disposed inside the first mover 200. The second mover 300 may move relative to the stator 100 and the first mover 200 in a direction perpendicular to the optical axis. The second mover 300 may be movable for OIS driving. The second mover 300 may be an OIS mover.

[0107] The lens drive device 10 may include a retainer 310. The second mover 300 may include a retainer 310. The retainer 310 may be disposed inside the housing 210. The retainer 310 may be disposed inside the base 110. The retainer 310 may be disposed inside the cover member 130. The retainer 310 may be coupled to the lens. The second magnet 320 may be disposed in the retainer 310. The retainer 310 may move during OIS driving. The retainer 310 may also move together with the housing 210 even during AF driving.

[0108] The retainer 310 may include a groove 311. A second spherical member 520 may be disposed in the groove 311. The groove 311 may be a groove that receives the second spherical member. The groove 311 may be formed in a shape corresponding to at least a portion of the second spherical member 520. The groove 311 may be formed such that the second spherical member 520 will not disengage. The groove 311 may contact the second spherical member 520 at one point. Alternatively, the groove 311 may contact the second spherical member 520 at two points. The groove 311 may contact the second spherical member 520 at three or more points. The groove 311 may be formed on the lower surface of the retainer 310.

[0109] The lens driving device 10 may include a second magnet 320. The second mover 300 may also include a second magnet 320. The second magnet 320 may be disposed in the holder 310. The second magnet 320 may face the second coil 230. The second magnet 320 may be configured to face the second coil 230. The second magnet 320 may overlap with the second coil 230 in the optical axis direction. The second magnet 320 may be disposed at a position corresponding to the second coil 230. The second magnet 320 may electromagnetically interact with the second coil 320. The second magnet 320 may move the holder 310 in a direction perpendicular to the optical axis. The second magnet 320 may move the holder 310 in a direction perpendicular to the optical axis through its interaction with the second coil 230. The second magnet 320 may move the holder 310 in a direction perpendicular to the optical axis through its electromagnetic interaction with the second coil 230.

[0110] The second magnet 320 may include multiple magnets. The second magnet 320 may include four magnets. The number of second magnets 320 may correspond to the number of second coils 230. The second magnet 320 may include a second-first magnet 321 that moves the holder 310 along the x-axis direction (first direction). In this case, the second-first magnet 321 may be an OIS-X magnet. The second magnet 320 may include a second-second magnet 322 that moves the holder 310 along the y-axis direction (a second direction perpendicular to the first direction). In this case, the second-second magnet 322 may be an OIS-Y magnet. In this case, the optical axis may be the z-axis. Each of the second-first magnet 321 and the second-second magnet 322 may include two magnets. The second-first magnet 321 may be disposed in the mover 330. The second-second magnet 322 may be disposed in the holder 310. Conversely, the second-first magnet 321 may be disposed in the holder 310. The second magnet 322 can be installed in the mover 330.

[0111] The lens driving device 10 may include a mover 330. The mover 330 may include a frame. A second mover 300 may include the mover 330. The mover 330 may be disposed between the retainer 310 and the housing 210. The mover 330 may move relative to the housing 210 in a direction perpendicular to the optical axis. The mover 330 may move relative to the housing 210 in a first direction perpendicular to the optical axis. The retainer 310 may move relative to the mover 330 in a second direction perpendicular to both the optical axis and the first direction. Conversely, the retainer 310 may move relative to the mover 330 in a first direction perpendicular to the optical axis. The mover 330 may move relative to the housing 210 in a second direction perpendicular to both the optical axis and the first direction. The directions of movement of the mover 330 relative to the housing 210 and the directions of movement of the retainer 310 relative to the mover 330 may be perpendicular to each other.

[0112] The mover 330 may include a first groove 331. The first groove 331 may be formed on the upper surface of the mover 330. A second spherical member 520 may be disposed in the first groove 331. The first groove 331 may be a receiving groove for the second spherical member. The first groove 331 may be formed to be longer than the diameter of the second spherical member 520 in the optical axis direction and in a second direction perpendicular to the first direction. The first groove 331 may guide the second spherical member 520 to move along the second direction. As a modified embodiment, the first groove 331 may guide the second spherical member 520 to move along the first direction. In this case, the first groove 211 of the housing 210 may guide the first spherical member 510 to move along the second direction. Figure 14 As illustrated in (a), the first groove 211 may have a triangular cross-section. Or, as shown in [the diagram]... Figure 14As illustrated in (b) of the diagram, the cross-section of the first groove 211 can be formed in a rectangular shape. Or, as shown in the diagram... Figure 14 As shown in (c) of the figure, the cross-section of the first groove 211 can be formed into a semi-circular shape.

[0113] The mover 330 may include a second groove 332. The second groove 332 may be formed on the lower surface of the mover 330. A first spherical member 510 may be disposed in the second groove 332. The second groove 332 may be a receiving groove for the first spherical member. The second groove 331 may be formed in a shape corresponding to at least a portion of the first spherical member 510. The first spherical member 510 may perform a rolling motion in the second groove 331. The first spherical member 510 may rotate while maintaining at least a portion inserted into the second groove 331. The second groove 332 may prevent the first spherical member 510 from rotating, such that the first spherical member 510 can rotate but cannot move. Figure 13 As shown in the figure, the second groove 332 can be formed into a hemispherical shape.

[0114] The lens driving device 10 may include a substrate 400. The substrate 400 may connect the housing 210 and the base 110. The substrate 400 may be disposed between the base 110 and the housing 210. The substrate 400 may be electrically connected to a first coil 220. The substrate 400 may be electrically connected to a second coil 230. At least a portion of the substrate 400 may be formed of a flexible printed circuit board (FPCB). The substrate 400 may be formed in a shape symmetrical about the optical axis. The substrate 400 may elastically support the movement of the housing 210. The substrate 400 may support the housing 210 for movement relative to the base 110 along the optical axis. The substrate 400 may be coupled to the lower surface of the lower plate 213 of the housing 210.

[0115] The substrate 400 may include a first connecting portion 410. The first connecting portion 410 may be connected to the base 110. The first connecting portion 410 may include a hole into which a protrusion of the base 110 is inserted. The first connecting portion 410 may be disposed on the upper surface of the base 110. The first connecting portion 410 may be fixed to the base 110.

[0116] The substrate 400 may include a second connecting portion 420. The second connecting portion 420 may be connected to the housing 210. The second connecting portion 420 may be connected to the second coil 230 via a conductive member. The second connecting portion 420 may be electrically connected to the second coil 230. The second connecting portion 420 may be electrically connected to the first coil 220. The second connecting portion 420 may include a hole into which a protrusion of the housing 210 is inserted. The second connecting portion 420 may be disposed on the lower surface of the housing 210. The second connecting portion 420 may be fixed to the housing 210.

[0117] Either the first connecting portion 410 or the second connecting portion 420 of the substrate 400 may be referred to as the "first region," and the other may be referred to as the "second region." The first region of the substrate 400 may be connected to the housing 210, and the second region of the substrate 400 may be connected to the base 110. The first region of the substrate 400 may be movable according to the movement of the housing 210. The first region may include a body portion on which the second coil 230 is disposed. The substrate 400 may include an elastic connecting portion connecting the first region and the second region. In a first embodiment, the elastic connecting portion may connect the body portion and the second region. In a second embodiment, the first region may include an end portion connected to the housing 210 and an elastic connecting portion connecting the end portion and the body portion.

[0118] The substrate 400 may include a connecting portion 430. The connecting portion 430 may be a "resilient connecting portion." The connecting portion 430 may connect a first connecting portion 410 and a second connecting portion 420. The connecting portion 430 may include a flexible portion. The connecting portion 430 may be flexible. The connecting portion 430 may be formed from an FPCB. The connecting portion 430 may include a bent shape. The connecting portion 430 may include a shape with multiple bends. The connecting portion 430 may include a first portion having a shape with multiple bends. The first portion of the substrate 400 may overlap with the second coil 230 in the optical axis direction.

[0119] The substrate 400 may include a terminal portion. The terminal portion may include terminals 440. The terminal portion may extend from the first connection portion 410. The terminal portion may extend downward from the first connection portion 410. The terminal portion may be bent from the first connection portion 410. Terminal 440 may include multiple terminals. Terminal 440 may include: four terminals electrically connected to the first Hall sensor 621; four terminals electrically connected to the second Hall sensor 622; two terminals electrically connected to the second-first coil 231 and the second-second coil 232; two terminals electrically connected to the second-third coil 233 and the second-fourth coil 234; and four terminals electrically connected to the driver IC 610. That is, it may include a total of 16 terminals. In a modified embodiment, terminal 440 may include: seven terminals electrically connected to the first Hall sensor 621 and the second Hall sensor 622; two terminals electrically connected to the second-first coil 231 and the second-second coil 232; two terminals electrically connected to the second-third coil 233 and the second-fourth coil 234; and four terminals electrically connected to the driver IC 610. That is, it may include a total of 15 terminals.

[0120] The lens driving device 10 may include a spherical member 500. The spherical member 500 can guide movement between the base 110, housing 210, retainer 310, and mover 330. The spherical member 500 can guide the movement of the housing 210, retainer 310, and mover 330 during AF and OIS driving. The spherical member 500 may be formed in a spherical shape. The spherical member 500 can guide the movement of the housing 210, retainer 310, and mover 330 by rotation.

[0121] The lens driving device 10 may include a first spherical member 510. The first spherical member 510 may contact the housing 210 and the mover 330. The first spherical member 510 may be disposed within the housing 210 and the mover 330. The first spherical member 510 may be disposed between the housing 210 and the mover 330. The first spherical member 510 may connect the housing 210 and the mover 330. The first spherical member 510 may contact the housing 210 at two or more points. The first spherical member 510 may guide the mover 330 to move relative to the housing 210 in a first direction perpendicular to the optical axis. The first spherical member 510 may be an OIS-X guiding spherical member. The first spherical member 510 may include multiple spherical members. The first spherical member 510 may include a total of six spherical members on each side, or a total of three spherical members on each side.

[0122] The lens driving device 10 may include a second spherical member 520. The second spherical member 520 may be disposed in the mover 330 and the holder 310. The second spherical member 520 may contact the mover 330 and the holder 310. The second spherical member 520 may be disposed between the mover 330 and the holder 310. The second spherical member 520 may connect the mover 330 and the holder 310. The second spherical member 520 may guide the holder 310 to move relative to the mover 330 in a second direction perpendicular to both the optical axis and the first direction. The second spherical member 520 may be an OIS-Y guiding spherical member. As a modified embodiment, the second spherical member 520 may guide the holder 310 to move relative to the mover 330 in a first direction perpendicular to the optical axis. In this case, the first spherical member 510 may guide the holder 310 to move relative to the mover 330 in a second direction perpendicular to both the optical axis and the first direction. The second spherical member 520 may include multiple spherical members. The second spherical component 520 may include four spherical components.

[0123] The lens driving device 10 may include a third spherical member 530. The third spherical member 530 may contact the housing 210 and the base 110. The third spherical member 530 may be disposed within the housing 210 and the base 110. The third spherical member 530 may be disposed between the housing 210 and the base 110. The third spherical member 530 may connect the housing 210 and the base 110. The third spherical member 530 may guide the housing 210 to move relative to the base 110 along the optical axis. The third spherical member 530 may be an AF guiding spherical member. The third spherical member 530 may include multiple spherical members. The third spherical member 530 may include four spherical members.

[0124] The lens driving device 10 may include a driver IC 610. The driver IC 610 may include a Hall element for detecting the first magnet 120. The driver IC 610 may be disposed in the substrate 400. The driver IC 610 may be electrically connected to the first coil 220. The driver IC 610 may be positioned corresponding to the first magnet 120. The driver IC 610 may control the current applied to the first coil 220. The Hall element may detect the magnetic force of the first magnet 120. The Hall element may detect the position or movement of the first magnet 120. The driver IC 610 may detect the position of the first magnet 120 and adjust the current applied to the first coil 220. That is, the driver IC 610 may perform AF feedback control.

[0125] The lens driving device 10 may include a Hall sensor 620. The Hall sensor 620 may be disposed in the substrate 400. The Hall sensor 620 can detect the second magnet 320. The Hall sensor 620 can detect the magnetic force of the second magnet 320. The Hall sensor 620 may be disposed at a position corresponding to the second magnet 320. The Hall sensor 620 can detect the position or movement of the second magnet 320. The value detected by the Hall sensor 620 can be used for OIS feedback control.

[0126] The Hall sensor 620 may include a first Hall sensor 621. The first Hall sensor 621 can detect the second / first magnet 321. The first Hall sensor 621 may be positioned at a location corresponding to the second / first magnet 321. The first Hall sensor 621 can detect the movement of the mover 330 in the x-axis direction. The first Hall sensor 621 may be an OIS-X sensor.

[0127] The Hall sensor 620 may include a second Hall sensor 622. The second Hall sensor 622 can detect the second magnet 322. The second Hall sensor 622 may be positioned corresponding to the second magnet 322. The second Hall sensor 622 can detect the movement of the retainer 310 in the y-axis direction. The second Hall sensor 622 may be an OIS-Y sensor. Conversely, the first Hall sensor 621 detects the movement of the mover 330 or the retainer 310 in the y-axis direction, and the second Hall sensor 622 can detect the movement of the mover 330 or the retainer 310 in the x-axis direction.

[0128] In this embodiment, when current is applied to the second-first coil 231 and the second-second coil 232, the second-first magnet 321 can move along a first direction (X-axis direction) perpendicular to the optical axis direction through the electromagnetic interaction between the second-first coil 231 and the second-second coil 232 and the second-first magnet 321 (see [link]). Figure 19 (OIS-X in the image). At this time, the mover 330 and the holder 310 can also move together with the second-first magnet 321 in a first direction perpendicular to the optical axis.

[0129] In this embodiment, when current is applied to the second-third coil 233 and the second-fourth coil 234, the second-second magnet 322 can move along a second direction (Y-axis direction) perpendicular to the first direction and the optical axis direction through the electromagnetic interaction between the second-third coil 233, the second-fourth coil 234 and the second-second magnet 322 (see [link]). Figure 19 (OIS-Y in the first direction). At this time, the holder 310 can also move together with the second magnet 322 in a second direction perpendicular to the optical axis direction and the first direction.

[0130] In this embodiment, when a positive current is applied to the first coil 220, the first coil 220 can move upward along the optical axis (z-axis) through the electromagnetic interaction between the first coil 220 and the first magnet 120. At this time, the housing 210, the mover 330, and the holder 310 can also move upward together with the first coil 220 (see [link]). Figure 20 (AF).

[0131] Additionally, when a reverse current is applied to the first coil 220, the second coil 220 can move downwards along the optical axis through the electromagnetic interaction between the first coil 220 and the first magnet 120. At this time, the housing 210, the mover 330, and the holder 310 can also move downwards together with the first coil 220 (see...). Figure 20 (AF).

[0132] In a modified embodiment, the first coil 220 and the first magnet 120 can be interchanged. The first magnet 120 can be disposed in the housing 210, and the first coil 220 can be disposed in the base 110. Furthermore, the second coil 230 and the second magnet 320 can also be interchanged. The second coil 230 can be disposed in the holder 310, and the mover 330 and the second magnet 320 can be disposed in the housing 210.

[0133] This embodiment may include an AF coil, an OIS coil, and a magnetic yoke located in the AF unit (as the moving part of the drive unit). Additionally, an FPCB for applying current to the driver may be included. In this case, a portion of the FPCB may move together with the AF unit. The FPCB may be separated in the form of multiple legs to avoid interference with the AF drive.

[0134] In this embodiment, a magnet for driving one axis of the OIS is mounted in the mover 330, while magnets for driving the other axes are mounted in the retainer 310 and can be driven individually. For both left and right OIS driving, spherical elements can be provided for each layer. A spherical groove can be formed on one side of the rolling portion of the spherical element to allow it to roll in the appropriate position. A magnetic yoke can be inserted inside the OIS coil to maintain the OIS attitude.

[0135] In this embodiment, since the OIS coil is located inside the AF driver, the linearity for OIS driving and Hall linearity can be easily ensured. Here, Hall linearity can be relative to the Hall element and / or Hall sensor. An advantage of this embodiment is that no OIS crosstalk occurs during AF driving. That is, Hall signal interference on the OIS side can be minimized during AF driving. The restoring force of the AF unit can be anticipated via the FPCB.

[0136] In the following description, a lens driving device according to a modified embodiment will be described with reference to the accompanying drawings.

[0137] Figure 21 The illustration shows a plan view and an enlarged view of the third spherical component and related configuration of the lens driving device according to a modified embodiment; Figure 22 It's a diagram. Figure 21 A view of the third spherical component and another modified embodiment of the related configuration shown in the figure; Figure 23 and Figure 24 This is a perspective view illustrating the installation state of the third and fourth magnets of the lens driving device according to a modified embodiment. Figure 25 The illustration shows a perspective view and a partially enlarged perspective view of the installation state of the housing cover, the fifth magnet, and the sixth magnet of the lens driving device according to the modified embodiment. Figure 26(a) is a view illustrating the housing cover and the fifth magnet, and (b) is a view illustrating the arrangement of the sixth magnet; and Figure 27 This is a view illustrating the arrangement of the second magnetic yoke of the lens driving device according to a modified embodiment.

[0138] The lens driving device according to the modified embodiment will be described mainly for the differences from the lens driving device according to this embodiment. Descriptions of the configuration of the lens driving device according to the modified embodiment that are not described below can be inferred from the corresponding description of the lens driving device according to this embodiment.

[0139] In the modified implementation, such as Figure 21 and Figure 22 As shown in the figure, two grooves for guiding the third spherical member 530 are formed in the housing 210, and only one groove may be formed in the base 110.

[0140] The lens driving device may include a third spherical member 530 in contact with the housing 210 and the base 110. The third spherical member 530 may include a third-first spherical member 531 disposed on one side of the first coil 220 and a third-second spherical member 532 disposed on the other side of the first coil 220. The base 110 may include a first surface facing the housing 210 and a groove 111 recessed in the first surface of the base 110. The third-first spherical member 531 may be disposed on the first surface of the base 110. The third-second spherical member 532 may be disposed in the groove 111 of the base 110. The groove may not be formed in the region on the first surface of the base 110 where the third-first spherical member 531 is disposed. The housing 210 may include a protrusion 215 projecting toward the first surface of the base 110. The third spherical member 530 may be disposed at the protrusion 215 of the housing 210. A second groove 212 is formed in the protruding portion 215 of the housing 210, and a third spherical member 530 may be disposed in the second groove 212.

[0141] The third-first spherical component 531 can be a first unit spherical component. The third-second spherical component 532 can be a second unit spherical component.

[0142] In a modified embodiment, the radius r1 of the third-first spherical member 531 may be different from the radius r2 of the third-second spherical member 532. Alternatively, the radius r1 of the third-first spherical member 531 may be the same as the radius r2 of the third-second spherical member 532.

[0143] like Figure 21 As illustrated, the groove 111 of the base 110 is formed only at the position corresponding to the third-second spherical member 532, and may not be formed at the position corresponding to the third-first spherical member 531. Figure 21 As illustrated in the figure, in a modified embodiment, the cross-section of the groove 111 of the base 110 may include three straight lines forming right angles with each other. That is, the cross-section of the groove 111 of the base 110 may be formed as a rectangular shape with one side open. In this case, the third spherical member 530 may contact the groove 111 of the base 110 at three points.

[0144] like Figure 22 As illustrated, the second groove 212 of the housing 212 and the groove 111 of the base 110 can be modified in various ways. For example... Figure 22 As illustrated in (a) and (c), the cross-section of the groove 212a of the third-first spherical member 531 in the housing 212 can be formed into a triangular shape with one side open. In this case, the third-first spherical member 531 can contact the groove 212a of the housing 210 at two points. Figure 22 As illustrated in (b), the cross-section of the groove 212b of the third-first spherical member 531 in the housing 212 can be formed as a pentagonal shape with one side open. Compared to the groove 212a in the aforementioned embodiment, 212b can be recessed more deeply. The third-first spherical member 531 can contact the groove 212b of the housing 210 at two points. Figure 22 As illustrated in (a), (b), and (c), the cross-section of the groove 212a of the third-second spherical member 532 in the housing 212 can be formed into a triangular shape with one side open. In this case, the third-second spherical member 532 can contact the groove 212a of the housing 210 at two points.

[0145] like Figure 22 As illustrated in (a) and (c), the portion of the base 110 where the third-first spherical member 531 is located can be formed as a flat surface. Or, as shown in the figures... Figure 22 As shown in (b) of the diagram, the portion of the base 110 where the third-first spherical member 531 is located can be formed as a protrusion 111b. Figure 22 As illustrated in (a), the cross-section of the groove 111a of the base 110 where the third and second spherical members 532 are located can have a trapezoidal shape with one side open. In this case, the third and second spherical members 532 can make contact with the groove 111a of the base 110 at three points. Figure 22 As illustrated in (b) and (c), the cross-section of the groove 111a of the third-second spherical member 532 in the base 110 can be formed into a triangular shape with one side open. In this case, the third-second spherical member 532 can contact the groove 111a of the base 110 at two points.

[0146] In the modified implementation, such as Figure 23 and Figure 24As illustrated, the first magnetic yoke 240 is omitted, and a magnet that generates an attractive force between the base 110 and the housing 210 can be added.

[0147] The lens driving device may include a third magnet 710 disposed in the base 110. The third magnet 710 may be disposed on the outer surface of the base 110. The lens driving device may also include a fourth magnet 720 disposed in the housing 210. The fourth magnet 720 may be disposed on the outer surface of the housing 210. The fourth magnet 720 may be disposed at a position corresponding to the third magnet 710, such that the attractive force acts together with the third magnet 710. As a result, the housing 210 can press the third spherical member 530 toward the base 110. Therefore, contact between the third spherical member 530, the housing 210, and the base 110 can be maintained.

[0148] In the modified implementation, such as Figure 25 and Figure 26 As illustrated, the second yoke 250 is omitted and magnets for pressing the retainer 310 and the mover 330 toward the housing 210 can be added.

[0149] The lens driving device may include a housing cover 260, which is coupled to the housing 210 and disposed above the retainer 310. The housing cover 260 may be a "frame cover". The lens driving device may include a fifth magnet 730 disposed in the housing cover 260. The fifth magnet 730 may be disposed on the lower surface of the housing cover 260. The lens driving device may include a sixth magnet 740 disposed in the retainer 310. The mover 330 and the second spherical member 520 may be disposed below the retainer 310. The sixth magnet 740 may be disposed at a position corresponding to the fifth magnet 730, such that the repulsive force acts together with the fifth magnet 730. Thus, the retainer 310 can press the second spherical member 520 toward the mover 330. Therefore, contact between the second spherical member 520, the retainer 310, and the mover 330 can be maintained. Furthermore, the retainer 310 may press the first spherical member 510 toward the housing 210 by moving 330. Therefore, contact can be maintained between the first spherical member 510, the mover 330, and the housing 210.

[0150] In the modified implementation, such as Figure 27 As illustrated, the second magnetic yoke 250 disposed in the housing 210 is omitted, and the second magnetic yoke 150 may be disposed in the base 110.

[0151] The lens driving device may include a second magnetic yoke 150 disposed in the base 110 at a position corresponding to the second magnet 320, such that the attractive force acts together with the second magnet 320. Thus, the mover 330 can press the first spherical member 510 toward the housing 110. Therefore, contact can be maintained between the first spherical member 510, the mover 330, and the housing 210. The base 110 may include a protrusion 112 projecting toward the second magnet 320. The second magnetic yoke 150 may be disposed on the upper surface of the protrusion 112. At least a portion of the protrusion 112 may be disposed inside the second coil 230.

[0152] As another modified embodiment, the second magnetic yoke, which senses the attractive force through the second magnet 320, can be disposed in the substrate 400 instead of in the base 110 and the housing 210. The second magnetic yoke can be disposed at a position corresponding to the second magnet 320 on the substrate 400.

[0153] In this embodiment, the mover may include a first frame to a third frame. The first frame may include a housing 210, the second frame may include a retainer 310, and the third frame may include a frame. In this case, the frame may include the mover 330. The housing 210 may be the first frame. The retainer 310 may be the second frame. The mover 330 may be the third frame. One of the housing 210, the retainer 310, and the mover 330 is referred to as the "first frame," another as the "second frame," and the remaining one as the "third frame."

[0154] Either the fifth magnet 730 or the sixth magnet 740 is referred to as the "first repulsive magnet," and the other may be referred to as the "second repulsive magnet." The first repulsive magnet may be disposed in the second frame.

[0155] The lens driving device 10 may include a second repulsive magnet disposed within the first frame cover and at a position corresponding to the first repulsive magnet. The repulsive force can act along the optical axis between the first and second repulsive magnets. The lens driving device 10 may include a third frame disposed between the first and second frames. The lens driving device 10 may include a fifth magnet disposed within the third frame. The ordinal numbers written in the third magnet 710, fourth magnet 720, fifth magnet 730, and sixth magnet 740 are used to distinguish between magnets and can be written arbitrarily. That is, when the third magnet 710 and fourth magnet 720 are omitted from the claims, either the fifth magnet 730 or the sixth magnet 740 may be referred to as the third magnet, and the other may be referred to as the fourth magnet.

[0156] In the following description, the camera module according to this embodiment will be described with reference to the accompanying drawings.

[0157] Figure 28 This is an exploded perspective view of the camera module according to this embodiment.

[0158] A camera module can be a camera device.

[0159] The camera module may include a lens module 20. The lens module 20 may include at least one lens. The lens may be positioned corresponding to the image sensor 60. The lens module 20 may include a lens and a lens barrel. The lens module 20 may be coupled to the coil holder 210 of the lens drive device 10. The lens module 20 may be coupled to the coil holder 210 via threaded connection and / or adhesive. The lens module 20 may move integrally with the coil holder 210.

[0160] The camera module may include a filter 30. The filter 30 can be used to block light of a specific frequency band passing through the lens module 20 from entering the image sensor 60. The filter 30 may be configured to be parallel to the xy plane. The filter 30 may be disposed between the lens module 20 and the image sensor 60. The filter 30 may be disposed in the sensor base 40. The filter 30 may include an infrared filter. The infrared filter can block light in the infrared region from incident on the image sensor 60. The infrared filter may include an infrared reflection filter or an infrared absorption filter.

[0161] The camera module may include a sensor base 40. The sensor base 40 may be disposed between the lens drive unit 10 and the printed circuit board 50. The sensor base 40 may include a protruding portion 41 with a filter 30. An opening may be formed in the portion of the sensor base 40 with the filter 30, allowing light passing through the filter 30 to enter the image sensor 60. An adhesive member may be disposed between the sensor base 40 and the lens drive unit 10. The adhesive member may attach the lens drive unit 10 to the upper surface of the sensor base 40. The adhesive member may be configured to prevent foreign objects from entering the lens drive unit 10. The adhesive member may include any one or more of epoxy resin, thermosetting adhesive, and UV-curable adhesive.

[0162] The camera module may include a printed circuit board 50. The printed circuit board 50 may be a substrate or a circuit board. A lens driving device 10 may be disposed on the printed circuit board 50. A sensor base 40 may be disposed between the printed circuit board 50 and the lens driving device 10. The printed circuit board 50 may be electrically connected to the lens driving device 10. An image sensor 60 may be disposed in the printed circuit board 50. The printed circuit board 50 may be equipped with various circuits, components, control units, etc., to convert the image formed by the image sensor 60 into electrical signals and transmit them to external devices.

[0163] The camera module may include an image sensor 60. The image sensor 60 may have a configuration in which light passing through a lens and filter 30 is incident to form an image. The image sensor 60 may be mounted on a printed circuit board 50. The image sensor 60 may be electrically connected to the printed circuit board 50. As an example, the image sensor 60 may be connected to the printed circuit board 50 via surface mount technology (SMT). As another example, the image sensor 60 may be connected to the printed circuit board 50 via flip-chip technology. The image sensor 60 may be configured such that its optical axis coincides with that of the lens. That is, the optical axis of the image sensor 60 and the optical axis of the lens may be aligned. The image sensor 60 may convert light incident on its effective image area into an electrical signal. The image sensor 60 may be any of a charge-coupled device (CCD), metal-oxide-semiconductor (MOS), CPD, and CID.

[0164] The camera module may include a motion sensor 70. The motion sensor 70 may be mounted on a printed circuit board 50. The motion sensor 70 may be electrically connected to a control unit 80 via a circuit pattern provided in the printed circuit board 50. The motion sensor 70 may output rotational angular velocity information generated by the motion of the camera module. The motion sensor 70 may include a 2-axis gyroscope sensor, a 3-axis gyroscope sensor, or an angular velocity sensor.

[0165] The camera module may include a control unit 80. The control unit 80 may be disposed in a printed circuit board 50. The control unit 80 may be electrically connected to the coil 130 of the lens drive device 10. The control unit 80 may independently control the direction, intensity, and amplitude of the current supplied to the coil 130. The control unit 80 may perform an autofocus function by controlling the lens drive device 10. The control unit 80 may be electrically connected to a Hall sensor 140. The control unit 80 may detect the position of the mover 200 through the Hall sensor 140 and perform autofocus feedback control on the lens drive device 10.

[0166] The camera module may include a connector 90. The connector 90 may be electrically connected to a printed circuit board 50. The connector 90 may include a port for electrical connection to an external device.

[0167] In the following description, the optical device according to this embodiment of the present invention will be described with reference to the accompanying drawings.

[0168] Figure 29 This is a perspective view of the optical device according to this embodiment.

[0169] Optical devices include mobile phones, portable phones, smartphones, portable communication devices, portable smart devices, portable terminals, digital cameras, computers, laptops, digital broadcasting terminals, personal digital assistants (PDAs), portable multimedia players (PMPs), and navigation devices. However, the types of optical devices are not limited to these, and any device used to capture video or photographs can be included in the category of optical devices.

[0170] The optical device may include a body 1. The body 1 may form the appearance of the optical device. The body 1 may house a camera module 2. A display 3 may be disposed on a first surface of the body 1. For example, the display 3 and the camera module 2 are disposed on the first surface of the body 1, and the camera module 2 may be additionally disposed on a second surface opposite to the first surface of the body 1.

[0171] The optical device may include a camera module 2. The camera module 2 may be disposed within the body 1. At least a portion of the camera module 2 may be housed within the body 1. Multiple camera modules 2 may be disposed. The camera module 2 may include two, three, or more camera modules. The camera module 2 may be disposed on each of a first surface of the body 1 and a second surface located opposite the first surface of the body 1. The camera module 2 may capture images and / or videos of an object.

[0172] The optical device may include a display 3. The display 3 may be disposed in the main body 1. The display 3 may be disposed on a first surface of the main body 1. The display 3 may output images and / or videos captured by the camera module 2.

[0173] Although embodiments of the invention have been described above with reference to the accompanying drawings, it will be understood by those skilled in the art that the invention may be implemented in other specific forms without altering its technical spirit or essential characteristics. Therefore, it should be understood that the above embodiments are illustrative in all respects and not restrictive.

Claims

1. A lens driving device, comprising: Base; A first frame is disposed on the base; A second frame is disposed on the first frame; A third frame is disposed between the first frame and the second frame; A first magnet and a first coil, the first magnet and the first coil being configured to move the first frame relative to the base along the optical axis; A second magnet is disposed on the second frame; The second coil is positioned at a location corresponding to the second magnet; A third spherical component is disposed between the first frame and the base; A cover member, the cover member including a top plate and side plates extending from the top plate; as well as A spacer is disposed between the cover member and the base. The second coil is configured to move the second frame in a direction perpendicular to the optical axis. The first frame includes a second groove for the third spherical member to be disposed therein; and The spacer includes an upper plate and a protruding portion that protrudes from the upper plate toward the third spherical member, the protruding portion overlapping the third spherical member in the optical axis direction.

2. The lens driving device according to claim 1, comprising a substrate disposed between the base and the first frame; in, The substrate includes a first region connected to the base, a second region connected to the first frame, and an elastic connecting portion connecting the first region and the second region. The elastic connection portion of the substrate includes a flexible portion.

3. The lens driving device according to claim 2, wherein, The elastic connection portion of the substrate includes a shape that is bent multiple times, and The elastic connection portion of the substrate overlaps with the second coil in the optical axis direction.

4. The lens driving device according to claim 2, wherein, The substrate is formed in a shape that is symmetrical about the optical axis.

5. The lens driving device according to claim 1, comprising: A first spherical component is disposed between the first frame and the third frame; as well as The second spherical component is disposed between the third frame and the second frame.

6. The lens driving device according to claim 5, wherein, The first frame includes a first groove for providing the first spherical member. Wherein, the first spherical member contacts the first frame at two or more points, and The first groove of the first frame is formed to be larger than the diameter of the first spherical member in a first direction perpendicular to the optical axis.

7. The lens driving device according to claim 6, wherein, The third frame includes a first groove formed on the upper surface of the third frame and for which the second spherical member is disposed, and The first groove of the third frame is formed to be larger than the diameter of the second spherical member in a second direction perpendicular to the optical axis and the first direction.

8. The lens driving device according to claim 7, wherein, The third frame includes a second groove formed on the lower surface of the third frame and on which the first spherical member is disposed. The second groove of the third frame is formed in a shape corresponding to at least a portion of the first spherical member. The second frame includes a groove for providing the second spherical member, and The groove of the second frame is formed in a shape corresponding to at least a portion of the second spherical member.

9. The lens driving device according to claim 5, wherein, The first spherical component is configured to guide the third frame to move relative to the first frame in a first direction perpendicular to the optical axis, and The second spherical component is configured to guide the second frame to move relative to the third frame in a second direction perpendicular to both the optical axis and the first direction.

10. The lens driving device according to claim 1, wherein, The first coil is disposed on the first frame; and The first magnet is disposed on the base.

11. The lens driving device according to claim 1, comprising a substrate disposed between the base and the first frame. in, The first coil is electrically connected to the substrate; and The second coil is disposed between the first frame and the substrate.

12. The lens driving device according to claim 1, comprising a first magnetic yoke, the first magnetic yoke being disposed on the first frame and disposed in the first coil.

13. The lens driving device according to claim 5, comprising a substrate disposed between the base and the first frame. in, The first frame includes a lower plate and side plates extending from the lower plate. The second coil is disposed on the lower surface of the lower plate of the first frame, and The substrate is connected to the lower surface of the lower plate of the first frame.

14. The lens driving device according to claim 13, comprising a second magnetic yoke disposed on the lower surface of the lower plate of the first frame and disposed in the second coil.

15. The lens driving device according to claim 1, wherein, The third spherical component is configured to guide the first frame to move relative to the base along the optical axis.

16. The lens driving device according to claim 1, wherein, At least a portion of the protruding portion is inserted into the second groove of the first frame.

17. The lens driving device according to claim 10, comprising: Includes a substrate, which is disposed between the base and the first frame. A driver integrated circuit, the driver integrated circuit including a Hall element configured to sense the first magnet, the driver integrated circuit being disposed on the substrate and electrically connected to the first coil; as well as A Hall sensor, which is disposed on the substrate and configured to sense the second magnet.

18. A lens driving device, comprising: Base; A housing, the housing being disposed on the base; A retainer is disposed on the housing; A first magnet and a first coil, the first magnet and the first coil being configured to move the housing and the holder along the optical axis; A second magnet is disposed on the holder; The second coil is positioned at a location corresponding to the second magnet; A third spherical component is disposed between the housing and the base; A cover member, the cover member including a top plate and side plates extending from the top plate; as well as A spacer is disposed between the cover member and the base. The second coil is configured to move the holder in a direction perpendicular to the optical axis. The housing includes a second groove for the third spherical member to be disposed therein; and The spacer includes an upper plate and a protruding portion that protrudes from the upper plate toward the third spherical member, the protruding portion overlapping the third spherical member in the optical axis direction.

19. A camera module, comprising: Printed circuit boards; An image sensor, wherein the image sensor is disposed on the printed circuit board; The lens driving device according to any one of claims 1 to 18, wherein the lens driving device is disposed on the printed circuit board; as well as A lens, which is connected to the lens driving device.

20. An optical device, comprising: main body; The camera module according to claim 19 is disposed on the main body; as well as A display disposed on the main body and configured to output at least one of the images and videos captured by the camera module.

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