Actuator for camera and camera module

Abstract

The present application relates to an actuator for a camera, comprising: a housing; the bearing part is arranged in the shell and can move in the optical axis direction relative to the shell; the lens bracket is arranged on the bearing part; and a guide member on which the image sensor is disposed and which is disposed on the bottom of the housing, in which the guide member and the image sensor are configured to be movable together in a first direction perpendicular to the optical axis direction; wherein the bearing part and the lens holder are configured to be capable of moving together in the optical axis direction, and wherein the lens holder is configured to be capable of moving relative to the bearing part in a second direction perpendicular to the optical axis direction and the first direction.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit of priority from Korean Patent Application No. 10-2021-0016696 filed on February 5, 2021, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety for all purposes by reference. Technical Field

[0003] The present disclosure relates to an actuator for a camera, a camera module, and a portable electronic device including the camera module. Background Art

[0004] The camera module may be used in mobile communication terminals such as tablet personal computers (PCs) or laptop computers, as well as smart phones.

[0005] In addition, the camera module may include an actuator with an autofocus function and an optical image stabilization function to achieve high-resolution images.

[0006] For example, auto focusing may be performed by moving the lens module in the optical axis (Z-axis) direction, or optical image stabilization may be performed by moving the lens module in a direction perpendicular to the optical axis (Z-axis).

[0007] In the case of a conventional actuator, the lens module may be disposed in the carrier, and autofocus may be performed by moving the carrier and the lens module together in the direction of the optical axis (Z axis). Image stabilization may then be performed by moving the lens module in the carrier in a direction perpendicular to the optical axis (Z axis). Here, the lens module may be equipped with a magnet for image stabilization.

[0008] In this conventional actuator, the lens module can move in the optical axis (Z-axis) direction while performing autofocus, thereby changing the relative position of the magnet for image stabilization and the coil for image stabilization (i.e., the position in the optical axis (Z-axis) direction).

[0009] When the relative positions (positions in the optical axis (Z-axis) direction) of the magnet for image stabilization and the coil for image stabilization change, it may be difficult to accurately control the driving force generated by the magnet for image stabilization and the coil for image stabilization (i.e., the driving force generated in a direction perpendicular to the optical axis (Z-axis)).

[0010] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the invention

[0011] The purpose of providing this summary is to introduce a selection of inventive concepts in a concise form, and these inventive concepts will be further described in the following detailed description. This summary is not intended to identify the key features or essential features of the subject matter claimed, nor is it intended to help determine the scope of the subject matter claimed.

[0012] In a general aspect, an actuator for a camera includes: a housing having an internal space; a base and a carrier disposed in the housing in one direction; a first drive unit generating a driving force in a first direction perpendicular to the one direction and in a second direction perpendicular to the one direction and the first direction, and including a plurality of magnets and a plurality of coils; and a second drive unit generating a driving force in the one direction and including a magnet and a coil, wherein an optical component is disposed on the carrier, wherein the carrier and the base are configured to move together in the first direction and the second direction, and wherein the carrier is configured to move relative to the base in the one direction.

[0013] The actuator may further include a guide member disposed between the housing and the base, wherein the guide member may be configured to move together with the carrier and the base in the first direction.

[0014] The first driving unit may include a first sub-driving unit and a second sub-driving unit, the first sub-driving unit including a first magnet and a first coil facing the first magnet in the one direction, the second sub-driving unit including a second magnet and a second coil facing the second magnet in the one direction, wherein the first magnet may be mounted on the guide member and the second magnet may be mounted on the base.

[0015] The first substrate can be mounted on the shell, wherein the first coil and the second coil can be arranged on one surface of the first substrate, and wherein, the first yoke and the second yoke can be arranged on the other surface of the first substrate, wherein the magnetic force acts between the first yoke and the first magnet via the first yoke, and the magnetic force acts between the second yoke and the second magnet via the second yoke.

[0016] The actuator may further include a first ball member that rolls in the first direction and is disposed between the guide member and the housing, and a second ball member that rolls in the second direction and is disposed between the guide member and the base.

[0017] A first guide groove defining a rolling direction of the first ball member may be positioned in at least one of the surfaces of the guide member and the housing, the surfaces being opposite to each other in the one direction, and a second guide groove defining a rolling direction of the second ball member may be positioned in at least one of the surfaces of the guide member and the base, the surfaces being opposite to each other in the one direction.

[0018] The first driving unit may include a first sub-driving unit and a second sub-driving unit, the first sub-driving unit including a first magnet and a first coil facing the first magnet in the one direction, the second sub-driving unit including a second magnet and a second coil facing the second magnet in the one direction, wherein the first magnet and the second magnet may be mounted on a base.

[0019] The actuator may also include a first ball member that rolls in a first direction and a second direction and is arranged between the shell and the base, and a first substrate mounted on the shell, wherein the first coil and the second coil may be arranged on one surface of the first substrate, and wherein the first yoke and the second yoke may be arranged on another surface of the first substrate, wherein a magnetic force acts between the first yoke and the first magnet via the first yoke, and a magnetic force acts between the second yoke and the second magnet via the second yoke.

[0020] The first driving unit may further include a first position sensing unit facing the first magnet and the second magnet in the one direction, wherein at least one of the first coil and the second coil includes two coils, and wherein the first position sensing unit includes at least three position sensors, and two of the at least three position sensors are arranged adjacent to the two coils.

[0021] The actuator may also include a first substrate mounted on the shell, wherein the magnet of the second drive unit may include at least two magnets, the coil of the second drive unit may include at least two coils, the two magnets may be respectively arranged on the upper surface and the lower surface of the carrying part, and any one of the two coils may be arranged on the first substrate, and the other coil may be arranged on the second substrate positioned spaced apart from the first substrate in the one direction.

[0022] The bearing portion may include a main body portion and a guide portion extending from one side of the main body portion in the one direction, the base may include a placement portion facing the main body portion in one direction and a receiving portion extending from one side of the placement portion in the one direction, and at least a portion of the guide portion may face the receiving portion in a direction perpendicular to the one direction.

[0023] The actuator may also include: a third ball member, arranged between the guiding portion and the receiving portion; and a third guide groove, in which the third ball member may be arranged, and the third guide groove is positioned in surfaces of the guiding portion and the receiving portion, which surfaces are opposite to each other in a direction perpendicular to the one direction.

[0024] The third ball member may include a first ball group and a second ball group, and the first ball group and the second ball group may each include a plurality of balls arranged in the one direction, and the number of the plurality of balls included in the first ball group may be greater than the number of the plurality of balls included in the second ball group.

[0025] At least two balls among the plurality of balls included in the first ball group may contact the third guide groove at four points, respectively, and at least two balls among the plurality of balls included in the second ball group may contact the third guide groove at three points, respectively.

[0026] A distance between at least two balls contacting the third guide groove at four points may be greater than a distance between at least two balls contacting the third guide groove at three points.

[0027] The actuator may also include a first magnetic material arranged on the guiding portion and a second magnetic material arranged on the receiving portion, wherein a magnetic force can be generated between the first magnetic material and the second magnetic material in a direction perpendicular to the one direction, and the first magnetic material and the second magnetic material can be arranged closer to the first ball group than to the second ball group.

[0028] The camera module may include an actuator for a camera and a lens module fixed to the housing and including at least one lens, wherein the optical member may be an image sensor, and the image sensor may move in the one direction, the first direction, and the second direction together with the carrier.

[0029] The camera module may include an actuator for a camera and an image sensor fixed to the housing, wherein the optical member may be a lens module including at least one lens, and the lens module may move in the one direction, the first direction, and the second direction together with the carrier.

[0030] In another general aspect, an actuator for a camera includes: a housing; a base movable relative to the housing in a first direction perpendicular to an optical axis direction and in a second direction perpendicular to the first direction and the optical axis direction; a carrying portion disposed on the base and movable relative to the base in the optical axis direction; and an image sensor disposed on the carrying portion.

[0031] The actuator may also include: a first magnet, facing the first coil in the optical axis direction to generate a driving force on the base in the first direction; a second magnet, facing the second coil in the optical axis direction to generate a driving force on the base in the second direction; and a third magnet, facing the third coil in the optical axis direction to generate a driving force on the bearing portion in the optical axis direction.

[0032] The actuator may further include a guide member disposed between the housing and the base, wherein the first magnet may be disposed on the guide member, the second magnet may be disposed on the base, and movement of the guide member in the first direction may move the base in the first direction.

[0033] The actuator may further include a guide member disposed between the housing and the base, wherein movement of the guide member in the first direction may cause the base to move in the first direction.

[0034] The camera module may include an actuator for the camera, and a lens module fixed to the housing and including at least one lens, wherein light refracted by the lens module may be incident on the image sensor.

[0035] In another general aspect, an actuator for a camera includes: a housing; a guide member disposed on the housing and movable relative to the housing in a first direction perpendicular to an optical axis direction; a first ball member rolling in the first direction and disposed between the guide member and the housing; a base disposed on the guide member, movable with the guide member in the first direction, and movable relative to the guide member in a second direction perpendicular to the first direction and the optical axis direction; a second ball member rolling in the second direction and disposed between the guide member and the base; a bearing portion disposed on the base and movable relative to the base in the optical axis direction; and a lens module including at least one lens and disposed on the bearing portion.

[0036] The actuator may further include an elastic member connecting the base and the bearing portion, wherein the elastic member may include a fixed portion fixed to the base, a movable portion disposed in the fixed portion and fixed to the bearing portion, and a bent portion connecting the fixed portion and the movable portion to each other.

[0037] The actuator may further include a third ball member disposed between the base and the bearing portion.

[0038] The actuator may further include a third ball member that rolls in the first direction and the second direction and is disposed between the base and the housing.

[0039] In another general aspect, an actuator for a camera includes: a housing; a guide member disposed on the housing and movable relative to the housing in a first direction perpendicular to an optical axis direction, a bearing portion disposed on the housing and movable relative to the housing in the optical axis direction; a lens holder disposed on the bearing portion and movable relative to the bearing portion in a second direction perpendicular to the first direction and the optical axis direction; a lens module disposed on the lens holder and including at least one lens; and an image sensor disposed on the guide member, wherein light refracted by the lens module is incident on the image sensor.

[0040] The actuator may also include: a first ball member that rolls in a first direction and is arranged between the guide member and the housing; a second ball member that rolls in a second direction and is arranged between the bearing portion and the lens holder; and a third ball member that rolls in an optical axis direction and is arranged between the bearing portion and the housing.

[0041] The actuator may also include: a first magnet, facing the first coil in the optical axis direction to generate a driving force on the guide member in the first direction; a second magnet, facing the second coil in the second direction to generate a driving force on the lens holder in the second direction; and a third magnet, facing the third coil in the first direction to generate a driving force on the bearing portion in the optical axis direction.

[0042] Other features and aspects will become apparent from the appended claims, the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a perspective view of a portable electronic device according to an exemplary embodiment of the present disclosure.

[0044] Figure 2 is a perspective view of a camera module according to an exemplary embodiment of the present disclosure.

[0045] Figure 3 is a schematic exploded perspective view of a camera module according to an exemplary embodiment of the present disclosure.

[0046] Figure 4 is a perspective view illustrating a lens and a lens barrel according to an exemplary embodiment of the present disclosure.

[0047] Figure 5 A modified example of the lens barrel according to the exemplary embodiment of the present disclosure is shown.

[0048] Figure 6 is an exploded perspective view showing a lens module, a first substrate, a housing, a guide member, and a base.

[0049] Figure 7 is an exploded perspective view showing the first substrate, the housing, and the guide member.

[0050] Figure 8 is an exploded perspective view showing a guide member and a base.

[0051] Fig. 9 Modified examples of the guide member and the base are shown.

[0052] Fig.10 is along Figure 6 A cross-sectional view taken along line II'.

[0053] Fig.11is along Figure 6 A cross-sectional view taken along line II-II'.

[0054] Fig.12 It is an exploded perspective view showing the carrier and the base.

[0055] Fig.13A and Fig. 13B This is a bottom perspective view of the base.

[0056] Fig.14 is along Fig. 13B A cross-sectional view taken along line III-III'.

[0057] Fig.15 It is a bottom stereogram of the bearing portion.

[0058] Fig.16 is along Fig.12 A cross-sectional view taken along line IV-IV'.

[0059] Fig.17 is along Fig.12 A cross-sectional view taken along line V-V'.

[0060] Fig.18 is along Fig.12 A cross-sectional view taken along line VI-VI'.

[0061] Fig.19 A modified example of the position of the third magnet is shown.

[0062] Fig. 20 Modified examples of the positions of the lens barrel and the image sensor are shown.

[0063] Fig.21 is a schematic exploded perspective view of a camera module according to another exemplary embodiment of the present disclosure.

[0064] Fig. 22 is an exploded perspective view illustrating a housing and a base of a camera module according to another exemplary embodiment of the present disclosure.

[0065] Fig.23 is a perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0066] Fig.24 is a plan view of a first driving unit of a camera module according to still another exemplary embodiment of the present disclosure.

[0067] Fig.25 and Fig.26 yes Fig.24 A modified example of the first drive unit is shown.

[0068] Fig. 27is a perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0069] Fig.28 is a schematic exploded perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0070] Fig.29 is a perspective view showing that the lens module, the carrier, and the base are assembled to each other, and the guide member and the housing are exploded.

[0071] Fig.30 Observed from the other direction Fig.29 A perspective view of the components shown.

[0072] Fig.31 A modified example of the type of support of the guide member relative to the housing is shown.

[0073] Fig.32 Modified examples of the positions of the first magnet and the first coil are shown.

[0074] Fig.33 is along Fig.29 A cross-sectional view taken along line VII-VII'.

[0075] Fig.34 is along Fig.29 A cross-sectional view taken along line VIII-VIII'.

[0076] Fig.35 is an exploded perspective view showing a lens module, an elastic member, a base, and a housing.

[0077] Fig.36 is a plan view of the elastic member.

[0078] Fig.37 Modification examples of the shape and position of the second drive unit are shown.

[0079] Fig.38 A modified example of the positions of the second sub driving unit and the second driving unit is shown.

[0080] Fig.39 is a perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0081] Fig.40 is a schematic exploded perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0082] Fig.41 is a perspective view illustrating that a guide member, a first driving unit, an image sensor, and a substrate are exploded in a camera module according to still another exemplary embodiment of the present disclosure.

[0083] Fig.42 It is an exploded stereogram of the lens module, the lens bracket and the bearing part.

[0084] Fig.43 is along Fig.39 A cross-sectional view taken along line IX-IX'.

[0085] Fig.44 is along Fig.39 A cross-sectional view taken along line XX'.

[0086] Fig.45 is a perspective view illustrating that a housing and a third driving unit are exploded in a camera module according to still another exemplary embodiment of the present disclosure.

[0087] Fig.46 is along Fig.39 A cross-sectional view taken along line XI-XI'.

[0088] Fig.47 is an exploded perspective view showing a guide member, an image sensor, and a first substrate.

[0089] Fig.48 is along Fig.47 A cross-sectional view taken along line XII-XII'.

[0090] Throughout the drawings and detailed description, the same reference numerals refer to the same elements. For purposes of clarity, illustration, and convenience, the drawings may not be drawn to scale, and the relative sizes, proportions, and depictions of elements in the drawings may be exaggerated. DETAILED DESCRIPTION

[0091] Hereinafter, although exemplary embodiments of the present disclosure are described in detail with reference to the accompanying drawings, it should be noted that examples are not limited thereto.

[0092] The following specific embodiments are provided to help the reader gain a comprehensive understanding of the methods, devices and / or systems described herein. However, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent after understanding the present disclosure. For example, the order of operations described herein is merely an example, and except for operations that must occur in a specific order, it is not limited to the order set forth herein, but can be changed, which will be apparent after understanding the present disclosure. In addition, for greater clarity and brevity, descriptions of features known in the art may be omitted.

[0093] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein are provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent after understanding the present disclosure.

[0094] Throughout the specification, when an element such as a layer, a region, or a substrate is described as being “on,” “connected to,” or “coupled to” another element, the element may be directly “on,” “connected to,” or “coupled to” the other element, or one or more other elements may be present between the element and the other element. Conversely, when an element is described as being “directly on,” “directly connected to,” or “directly coupled to” another element, no other elements may be present between the element and the other element.

[0095] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items; similarly, "at least one" includes any one of the associated listed items and any combination of any two or more items.

[0096] Although terms such as "first", "second" and "third" may be used herein to describe various members, components, regions, layers or portions, these members, components, regions, layers or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer or portion from another member, component, region, layer or portion. Therefore, without departing from the teachings of the examples described herein, the first member, first component, first region, first layer or first portion mentioned in these examples may also be referred to as the second member, second component, second region, second layer or second portion.

[0097] Spatially relative terms such as "above", "higher", "below", "lower", etc. may be used herein for descriptive convenience to describe the relationship of one element relative to another element as shown in the accompanying drawings. In addition to covering the orientations depicted in the accompanying drawings, these spatially relative terms are intended to also cover different orientations of the device in use or operation. For example, if the device in the accompanying drawings is flipped, an element described as being "above" or "higher" relative to another element will be "below" or "lower" relative to the other element. Therefore, depending on the spatial orientation of the device, the term "above" covers both orientations of "above" and "below". The device may also be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and the spatially relative terms used herein should be interpreted accordingly.

[0098] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the articles "a", "an" and "the" are intended to include plural forms as well. The words "include", "comprise" and "have" indicate the presence of the features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0099] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0100] It should be noted that herein, use of the word “may” with respect to an example, such as regarding what an example may include or implement, means that there is at least one example in which such feature is included or implemented, and all examples are not limited thereto.

[0101] The features of the examples described herein may be combined in various ways that will be apparent after understanding the present disclosure. In addition, although the examples described herein have various configurations, other configurations that will be apparent after understanding the present disclosure are also possible.

[0102] An aspect of the present disclosure may provide an actuator for a camera having improved image stabilization performance, a camera module, and a portable electronic device including the camera module.

[0103] Figure 1 is a perspective view of a portable electronic device according to an exemplary embodiment of the present disclosure.

[0104] Figure 2 is a perspective view of a camera module according to an exemplary embodiment of the present disclosure; and

[0105] Figure 3 is a schematic exploded perspective view of a camera module according to an exemplary embodiment of the present disclosure.

[0106] also, Figure 4 is a perspective view showing a lens and a lens barrel according to an exemplary embodiment of the present disclosure; and Figure 5 A modified example of the lens barrel according to the exemplary embodiment of the present disclosure is shown.

[0107] Reference Figure 1, the actuator for a camera and the camera module including the actuator according to the exemplary embodiment of the present disclosure may be mounted on a portable electronic device P. The portable electronic device P may be a portable electronic device such as a mobile communication terminal, a smart phone, or a tablet personal computer (PC).

[0108] Reference Figure 2 and Figure 3 , a camera module C1 according to an exemplary embodiment of the present disclosure may include a lens module 1000 for a camera and an actuator 1 (hereinafter referred to as an 'actuator').

[0109] The lens module 1000 may include one or more lenses L and a lens barrel 1100. The one or more lenses L may be disposed in the lens barrel 1100. When the lens module 1000 includes one or more lenses L, the one or more lenses L may be installed in the lens barrel 1100 along an optical axis (Z axis).

[0110] The lens module 1000 may further include a lens holder 1300 coupled to the lens barrel 1100 .

[0111] The lens holder 1300 may include a coupling hole 1310 that passes through the lens holder 1300 in the optical axis (Z axis) direction. The lens barrel 1100 may be inserted into the coupling hole 1310 and fixedly disposed on the lens holder 1300. The lens holder 1300 may be used to fix the lens barrel 1100 relative to the housing 5000. For another example, the lens barrel 1100 may be directly coupled and fixed to the housing 5000.

[0112] In an exemplary embodiment of the present disclosure, the lens module 1000 may be a fixed member fixed to the housing 5000. For example, the lens module 1000 may be a fixed member that does not move when performing auto focus (AF) and optical image stabilization (OIS).

[0113] The camera module C1 according to an exemplary embodiment of the present disclosure can perform auto focus (AF) and optical image stabilization (OIS) by moving the image sensor S instead of the lens module 1000. The relatively light image sensor S is moved, and thus the image sensor S can be moved by a smaller driving force. Therefore, the components included in the actuator 1 can be made smaller.

[0114] The actuator 1 may include a bearing portion 2000 , a base 3000 , a guide member 4000 , and a housing 5000 .

[0115] The carrying part 2000 can move in the direction of the optical axis (Z axis) and in a direction perpendicular to the optical axis (Z axis). Figure 3 , the image sensor S may be disposed on the carrier 2000 .

[0116] Therefore, the image sensor S can move together with the carrier 2000 in the optical axis (Z axis) direction to perform auto focusing, and the image sensor S can move together with the carrier 2000 in a direction perpendicular to the optical axis (Z axis) to stabilize a captured image.

[0117] The base 3000 can move in a direction perpendicular to the optical axis (Z axis). That is, the base 3000 can be a fixed member that does not move in the direction of the optical axis (Z axis) when performing autofocus, and can be a movable member that moves in a direction perpendicular to the optical axis (Z axis) when performing image stabilization.

[0118] The carrier 2000 may be disposed on the base 3000, and the base 3000 and the carrier 2000 may thus move together in a direction perpendicular to the optical axis (Z axis) to stabilize the image. The carrier 2000 may move relative to the base 3000 while performing autofocus.

[0119] The base 3000 may be disposed in the housing 5000. The guide member 4000 may be disposed between the base 3000 and the housing 5000. For example, the guide member 4000 and the base 3000 may be sequentially disposed in the housing 5000 in the optical axis (Z axis) direction.

[0120] The guide member 4000 may move in a first axis (X axis) direction, and the base 3000 may move in the first axis (X axis) direction and a second axis (Y axis) direction.

[0121] For example, the guide member 4000 and the base 3000 may move together in the first axis (X axis) direction. In addition, the base 3000 may move relative to the guide member 4000 in the second axis (Y axis) direction.

[0122] The first axis (X axis) direction may indicate a direction perpendicular to the optical axis (Z axis), and the second axis (Y axis) direction may indicate a direction perpendicular to the optical axis (Z axis) direction and the first axis (X axis) direction.

[0123] The first ball member B1 may be disposed between the guide member 4000 and the housing 5000 , and the second ball member B2 may be disposed between the guide member 4000 and the base 3000 .

[0124] The first ball member B1 may be disposed to contact each of the guide member 4000 and the housing 5000 , and the second ball member B2 may be disposed to contact each of the guide member 4000 and the base 3000 .

[0125] The carrier 2000 may be disposed on the base 3000. For example, the carrier 2000 and the base 3000 may be sequentially stacked in the optical axis (Z axis) direction. While performing autofocus, the base 3000 may be a fixed member that does not move in the optical axis (Z axis) direction, and the carrier 2000 may be a movable member that moves in the optical axis (Z axis) direction.

[0126] The third ball member B3 may be disposed between the bearing portion 2000 and the base 3000. The third ball member B3 may be disposed to contact each of the bearing portion 2000 and the base 3000.

[0127] When the carrier 2000 moves in the optical axis (Z axis) direction relative to the base 3000 , the third ball member B3 can roll in the optical axis (Z axis) direction to support the movement of the carrier 2000 .

[0128] Reference Figure 4 and 5 , the lens barrel 1100 may partially have a cylindrical shape, or entirely have a cylindrical shape.

[0129] Reference Figure 4 , the lens barrel 1100 may include a first barrel 1110 and a second barrel 1130. The first barrel 1110 and the second barrel 1130 may be used to refer to an upper portion and a lower portion of one lens barrel 1100, respectively. Alternatively, the first barrel 1110 and the second barrel 1130 may be separate components and may be coupled to each other.

[0130] The first lens barrel 1110 may have a cylindrical shape with an inner space, and the second lens barrel 1130 may have a quadrilateral box shape with an inner space. A passage hole through which light passes may be provided in each of the upper surface of the first lens barrel 1110 and the lower surface of the second lens barrel 1130.

[0131] A lens L1 having a circular planar shape (hereinafter referred to as “first lens”) may be disposed in the first lens barrel 1110 , and a lens L2 having a non-circular planar shape (hereinafter referred to as “second lens”) may be disposed in the second lens barrel 1130 .

[0132] For example, second lens L2 may have a non-circular shape when viewed from the optical axis (Z-axis) direction.

[0133] Based on a plane perpendicular to the optical axis (Z axis), the second lens L2 may have a length T1 in a first axis (X axis) direction perpendicular to the optical axis (Z axis), which is longer than a length T2 in a second axis (Y axis) direction perpendicular to the optical axis (Z axis) and the first axis (X axis).

[0134] For example, the second lens L2 may have a major axis and a minor axis. The major axis may indicate a line segment connecting two side surfaces of the second lens L2 in a first axis (X axis) direction while passing through the optical axis (Z axis), and the minor axis may indicate a line segment connecting two side surfaces of the second lens L2 in a second axis (Y axis) direction while passing through the optical axis (Z axis). The major axis and the minor axis may be perpendicular to each other, and the length of the major axis is longer than the length of the minor axis.

[0135] Second lens L2 may have four side surfaces along the periphery of second lens L2. When viewed in the optical axis direction, two of the four side surfaces may each have an arc shape, and the other two side surfaces may each have a substantially linear shape.

[0136] Generally, the image sensor S of the camera module C1 may have a rectangular shape, and thus, not all of the light refracted by the circular lens may be imaged on the image sensor S.

[0137] In this exemplary embodiment, the second lens L2 may have a non-circular planar shape, and the lens L and the lens barrel 1100 may therefore be made smaller without affecting image formation, thereby reducing the size of the camera module C1.

[0138] Meanwhile, second lens L2 may have a major axis and a minor axis, and thus may have a maximum diameter and a minimum diameter. Here, the maximum diameter of second lens L2 may be greater than the diameter of first lens L1.

[0139] That is, second lens L2 having a relatively large diameter may have a non-circular plan shape.

[0140] Figure 6 is an exploded perspective view showing a lens module, a first substrate, a housing, a guide member, and a base; Figure 7 is an exploded perspective view showing a first substrate, a housing, and a guide member; Figure 8 is an exploded perspective view showing a guide member and a base; and Fig. 9 Modified examples of the guide member and the base are shown.

[0141] also, Fig.10 is along Figure 6 A cross-sectional view taken along line II' of ; and Fig.11 is along Figure 6 A cross-sectional view taken along line II-II'.

[0142] One or more examples of the base 3000 and the guide member 4000 that move in a direction perpendicular to the optical axis (Z axis) will be referred to. Figures 6 to 11 Further description.

[0143] The guide member 4000 and the base 3000 may be disposed in the housing 5000. For example, the guide member 4000 and the base 3000 may be sequentially disposed in the housing 5000 in the optical axis (Z axis) direction. The guide member 4000 may thus be disposed between the housing 5000 and the base 3000.

[0144] The guide member 4000 may have a quadrilateral shape with both sides removed when viewed from the optical axis (Z axis) direction. For example, the guide member 4000 may have a "┐" or "└" shape when viewed from the optical axis (Z axis) direction.

[0145] The guide member 4000 may be disposed between the housing 5000 and the base 3000 , and thus it is necessary to reduce the thickness of the guide member 4000 to reduce the height of the actuator 1 in the optical axis (Z-axis) direction.

[0146] However, when having a reduced thickness, the guide member 4000 may have weaker rigidity to have lower reliability against external impact or the like.

[0147] Therefore, the guide member 4000 may include a reinforcement plate to have enhanced rigidity.

[0148] For example, the reinforcement plate may be insert-injected to be integrally coupled to the guide member 4000. In this case, the reinforcement plate may be manufactured integrally with the guide member 4000 by injecting a resin material into a mold in a state where the reinforcement plate is fixed in the mold.

[0149] The reinforcing plate may be provided in the guide member 4000. In addition, the reinforcing plate may be provided to be partially exposed outwardly from the guide member 4000. In this manner, the reinforcing plate may be partially exposed outwardly from the guide member 4000 while being integrally formed in the guide member 4000, which may improve the bonding force between the reinforcing plate and the guide member 4000 and prevent the reinforcing plate from being separated from the guide member 4000.

[0150] The reinforcing plate may be a non-magnetic metal so that the reinforcing plate does not affect the magnetic fields of the first magnet 6110 and the second magnet 6310 of the first driving unit 6000 described below.

[0151] The guide member 4000 may move in a first axis (X axis) direction, and the base 3000 may move in the first axis (X axis) direction and a second axis (Y axis) direction.

[0152] For example, the guide member 4000 and the base 3000 may move together in the first axis (X axis) direction. In addition, the base 3000 may move relative to the guide member 4000 in the second axis (Y axis) direction.

[0153] The carrier 2000 may be disposed on the base 3000, and the image sensor S may be disposed on the carrier 2000. Therefore, when the base 3000 moves in the first axis (X axis) direction and the second axis (Y axis) direction, the carrier 2000 and the image sensor S may also move in the first axis (X axis) direction and the second axis (Y axis) direction.

[0154] The actuator 1 according to an exemplary embodiment of the present disclosure may include a first driving unit 6000. The first driving unit 6000 may generate a driving force in a direction perpendicular to the optical axis (Z axis) to move the base 3000 in the direction perpendicular to the optical axis (Z axis).

[0155] The first driving unit 6000 may include a first sub driving unit 6100 and a second sub driving unit 6300. The first sub driving unit 6100 may generate a driving force in a first axis (X axis) direction, and the second sub driving unit 6300 may generate a driving force in a second axis (Y axis) direction.

[0156] The first sub driving unit 6100 may include a first magnet 6110 and a first coil 6130. The first magnet 6110 and the first coil 6130 may be disposed opposite to each other in the optical axis (Z-axis) direction.

[0157] The first magnet 6110 may be disposed on the guide member 4000. For example, the first magnet 6110 may be disposed on one side of the guide member 4000 having a “┐” or “└” shape. The mounting groove 4100 in which the first magnet 6110 is disposed may be positioned on one side of the guide member 4000. The first magnet 6110 may be inserted into the mounting groove 4100, thereby preventing the actuator 1 and the camera module C1 from having an increased overall height due to the thickness of the first magnet 6110.

[0158] The first back yoke 6150 may be disposed between the guide member 4000 and the first magnet 6110. The first back yoke 6150 may prevent leakage of magnetic flux of the first magnet 6110, thereby improving a driving force thereof.

[0159] The first magnet 6110 may be magnetized so that one surface thereof (e.g., a surface facing the first coil 6130) has an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially positioned in the first axis (X axis) direction on one surface of the first magnet 6110 facing the first coil 6130. The first magnet 6110 may be elongated in the second axis (Y axis) direction.

[0160] The other surface (eg, the surface opposite to the one surface) of the first magnet 6110 may be magnetized to have an S pole and an N pole. For example, the S pole, the neutral region, and the N pole may be sequentially positioned on the other surface of the first magnet 6110 in the first axis (X axis) direction.

[0161] The first coil 6130 may be disposed to face the first magnet 6110. For example, the first coil 6130 may be disposed to face the first magnet 6110 in the optical axis (Z axis) direction. The first coil 6130 may have a hollow annular shape and may be elongated in the second axis (Y axis) direction.

[0162] The first coil 6130 may be disposed on the first substrate 8100. The first substrate 8100 may be mounted on the housing 5000 such that the first magnet 6110 and the first coil 6130 face each other in the optical axis (Z-axis) direction.

[0163] The housing 5000 may include a through hole 5100. For example, the through hole 5100 may pass through the upper surface of the housing 5000 in the optical axis (Z axis) direction. The first coil 6130 may be disposed in the through hole 5100 of the housing 5000. The first coil 6130 may be disposed in the through hole 5100 of the housing 5000, thereby preventing the actuator 1 and the camera module C1 from having an increased overall height due to the thickness of the first coil 6130.

[0164] The first magnet 6110 may be a moving member that is mounted on the guide member 4000 and moves together with the guide member 4000 , and the first coil 6130 may be a fixed member fixed to the first substrate 8100 and the housing 5000 .

[0165] When power is applied to the first coil 6130 , the guide member 4000 may move in the first axis (X axis) direction by an electromagnetic force generated between the first magnet 6110 and the first coil 6130 .

[0166] The second sub driving unit 6300 may include a second magnet 6310 and a second coil 6330. The second magnet 6310 and the second coil 6330 may be disposed opposite to each other in the optical axis (Z-axis) direction.

[0167] The second magnet 6310 may be disposed on the base 3000. The second back yoke 6350 may be disposed between the base 3000 and the second magnet 6310. The second back yoke 6350 may prevent leakage of magnetic flux of the second magnet 6310, thereby improving a driving force thereof.

[0168] The guide member 4000 may have an escape hole 4300 so that the second magnet 6310 and the second coil 6330 may directly face each other. For example, the escape hole 4300 may be located on the other side of the guide member 4000 having a "┐" or "└" shape (where the first magnet 6110 is not provided). The escape hole 4300 may pass through the other side of the guide member 4000 in the optical axis (Z axis) direction.

[0169] The second magnet 6310 may be disposed in the escape hole 4300 of the guide member 4000 while being mounted on the base 3000. Therefore, the second magnet 6310 may directly face the second coil 6330 through the escape hole 4300.

[0170] The guide member 4000 and the base 3000 can be sequentially arranged in the housing 5000 in the optical axis (Z axis) direction, and even if the second magnet 6310 is set on the base 3000, the actuator 1 and the camera module C1 can be prevented from having an increased total height by the escape hole 4300 set in the guide member 4000.

[0171] The second magnet 6310 may be magnetized so that one surface thereof (e.g., a surface facing the second coil 6330) has an N pole and an S pole. For example, an S pole, a neutral region, and an N pole may be sequentially positioned in the second axis (Y axis) direction on one surface of the second coil 6330 facing the second magnet 6310. The second magnet 6310 may be elongated in the first axis (X axis) direction.

[0172] The other surface (eg, the surface opposite to the one surface) of the second magnet 6310 may be magnetized to have an N pole and an S pole. For example, the N pole, the neutral region, and the S pole may be sequentially positioned on the other surface of the second magnet 6310 in the second axis (Y axis) direction.

[0173] The second coil 6330 may be disposed to face the second magnet 6310. For example, the second coil 6330 may be disposed to face the second magnet 6310 in the optical axis (Z axis) direction. The second coil 6330 may have a hollow annular shape and may be elongated in the first axis (X axis) direction.

[0174] The second coil 6330 may be disposed on the first substrate 8100. The first substrate 8100 may be mounted on the housing 5000 such that the second magnet 6310 and the second coil 6330 face each other in the optical axis (Z-axis) direction.

[0175] The housing 5000 may include a through hole 5100. For example, the through hole 5100 may pass through the upper surface of the housing 5000 in the optical axis direction. The second coil 6330 may be disposed in the through hole 5100 of the housing 5000. The second coil 6330 may be disposed in the through hole 5100 of the housing 5000, thereby preventing the actuator 1 and the camera module C1 from having an increased overall height due to the thickness of the second coil 6330.

[0176] The second magnet 6310 may be a moving member mounted on the base 3000 and moving together with the base 3000 , and the second coil 6330 may be a fixed member fixed to the first substrate 8100 and the housing 5000 .

[0177] When power is applied to the second coil 6330 , the base 3000 may be moved in the second axis (Y axis) direction by an electromagnetic force generated between the second magnet 6310 and the second coil 6330 .

[0178] In this exemplary embodiment, the first magnet 6110 is mounted on the guide member 4000, and the second magnet 6310 is mounted on the base 3000. For another example, refer to Fig. 9 , the first magnet 6110 and the second magnet 6310 may also be mounted on the base 3000. In this case, the escape hole 4300 may also be located in the one side of the guide member 4000.

[0179] At the same time, if Figure 6 As shown, the first coil 6130 and the second coil 6330 may be winding coils and may be mounted on the first substrate 8100. For another example, the first coil 6130 and the second coil 6330 may be copper foil patterns stacked and embedded in the first substrate 8100.

[0180] The first magnet 6110 and the second magnet 6310 may be disposed perpendicularly to each other based on a plane perpendicular to the optical axis (Z axis), and the first coil 6130 and the second coil 6330 may also be disposed perpendicularly to each other based on a plane perpendicular to the optical axis (Z axis).

[0181] The first ball member B1 may be disposed between the guide member 4000 and the housing 5000 , and the second ball member B2 may be disposed between the guide member 4000 and the base 3000 .

[0182] The first ball member B1 may be disposed to contact each of the guide member 4000 and the housing 5000 , and the second ball member B2 may be disposed to contact each of the guide member 4000 and the base 3000 .

[0183] The first ball member B1 and the second ball member B2 may be used to guide the movement of the guide member 4000 and the base 3000 while performing image stabilization. In addition, the ball members may also be used to maintain each gap between the base 3000, the guide member 4000, and the housing 5000.

[0184] The first ball member B1 may guide the movement of the guide member 4000 in the first axis (X axis) direction, and the second ball member B2 may guide the movement of the base 3000 in the second axis (Y axis) direction.

[0185] For example, when a driving force is generated in the first axis (X axis) direction, the first ball member B1 may roll in the first axis (X axis) direction. Therefore, the first ball member B1 may guide the movement of the guide member 4000 in the first axis (X axis) direction.

[0186] In addition, when a driving force is generated in the second axis (Y axis) direction, the second ball member B2 may roll in the second axis (Y axis) direction. Therefore, the second ball member B2 may guide the movement of the base 3000 in the second axis (Y axis) direction.

[0187] The first ball member B1 may include a plurality of balls disposed between the guide member 4000 and the housing 5000 , and the second ball member B2 may include a plurality of balls disposed between the base 3000 and the guide member 4000 .

[0188] Reference Figure 7 , the first guide groove g1 in which the first ball member B1 is provided may be located in at least one of the surfaces of the guide member 4000 and the housing 5000, which surfaces face each other in the optical axis (Z axis) direction. The plurality of first guide grooves g1 may be located to correspond to the plurality of balls included in the first ball member B1.

[0189] The first ball member B1 may be received in the first guide groove g1 and inserted between the guide member 4000 and the housing 5000 .

[0190] When the first ball member B1 is accommodated in the first guide groove g1, the first ball member B1 can be restricted from moving in the optical axis (Z axis) direction or the second axis (Y axis) direction, and the first ball member B1 can only move in the first axis (X axis) direction. For example, the first ball member B1 can only roll in the first axis (X axis) direction.

[0191] To this end, the first guide groove g1 may be elongated in the first axis (X axis) direction.

[0192] Reference Figure 8The second guide groove g2 in which the second ball member B2 is provided may be positioned in at least one of the surfaces of the base 3000 and the guide member 4000 facing each other in the optical axis (Z axis) direction. A plurality of second guide grooves g2 may be positioned to correspond to a plurality of balls included in the second ball member B2.

[0193] The second ball member B2 may be received in the second guide groove g2 and inserted between the base 3000 and the guide member 4000 .

[0194] When the second ball member B2 is accommodated in the second guide groove g2, the second ball member B2 can be restricted from moving in the optical axis (Z axis) direction or the first axis (X axis) direction, and the second ball member B2 can only move in the second axis (Y axis) direction. For example, the second ball member B2 can only roll in the second axis (Y axis) direction.

[0195] To this end, the second guide groove g2 may be elongated in the second axis (Y axis) direction.

[0196] like Fig.10 As shown, when a driving force is generated in the first axis (X axis) direction, the guide member 4000 and the base 3000 may move together in the first axis (X axis) direction.

[0197] Here, the first ball member B1 disposed between the guide member 4000 and the housing 5000 may roll along the first axis (X axis).

[0198] The second ball member B2 may be disposed between the guide member 4000 and the base 3000 and restricts movement in the first axis (X axis) direction. As a result, when the guide member 4000 moves in the first axis (X axis) direction, the base 3000 may also move in the first axis (X axis) direction.

[0199] like Fig.11 As shown, when a driving force is generated in the second axis (Y axis) direction, the base 3000 may move in the second axis (Y axis) direction.

[0200] Here, the second ball member B2 disposed between the base 3000 and the guide member 4000 may roll along the second axis (Y axis).

[0201] The guide member 4000 may move in a first axis (X axis) direction, and the base 3000 may move in the first axis (X axis) direction and a second axis (Y axis) direction.

[0202] The carrier 2000 may be disposed on the base 3000, and the image sensor S may be disposed on the carrier 2000. As a result, when the base 3000 moves, the carrier 2000 and the image sensor S may also move in the first axis (X axis) direction and the second axis (Y axis) direction.

[0203] The first buffer member d1 having elasticity may be provided on at least one of the surfaces of the base 3000 and the housing 5000, the surfaces facing each other in a direction perpendicular to the optical axis (Z axis). Fig.10 and Fig.11 , the first buffer member d1 may be disposed on a side surface of the base 3000. The base 3000 may have four side surfaces, and the first buffer member d1 may be disposed at two points of each side surface of the base 3000 while being spaced apart from each other. The first buffer member d1 may be made of a material having elasticity. For example, the first buffer member d1 may be made of a rubber material.

[0204] Therefore, the first buffer member d1 may reduce impact and noise that occur when the base 3000 , which is movable in the first axis (X axis) direction and the second axis (Y axis) direction, collides with the housing 5000 .

[0205] The actuator 1 according to the exemplary embodiment of the present disclosure may detect the position of the base 3000 in a direction perpendicular to the optical axis (Z axis).

[0206] To this end, the actuator 1 may include a first position sensing unit 6500 (see Figure 6 ). The first position sensing unit 6500 may include a first position sensor 6510 and a second position sensor 6530. The first position sensor 6510 may be disposed on the first substrate 8100 to face the first magnet 6110, and the second position sensor 6530 may be disposed on the first substrate 8100 to face the second magnet 6310. The first position sensor 6510 and the second position sensor 6530 may be Hall sensors.

[0207] For another example, the actuator 1 may not include a separate position sensor. In this case, the first coil 6130 and the second coil 6330 may be used as the first position sensing unit 6500.

[0208] For example, the position of the base 3000 may be detected based on a change in inductance of the first coil 6130 and the second coil 6330 .

[0209] For example, as the base 3000 moves, the first magnet 6110 and the second magnet 6310 may also move, and the inductance levels of the first coil 6130 and the second coil 6330 may change accordingly. Therefore, the position of the base 3000 may be detected based on the change in the inductance levels of the first coil 6130 and the second coil 6330.

[0210] Reference Figure 6 and 7 , the actuator 1 according to an exemplary embodiment of the present disclosure may include a yoke unit 9000. The yoke unit 9000 may provide pressure to keep the base 3000, the guide member 4000, and the housing 5000 in contact with the first ball member B1 and the second ball member B2, respectively.

[0211] The yoke unit 9000 may include a first yoke 9100 and a second yoke 9300, and the first yoke 9100 and the second yoke 9300 may be fixed to the housing 5000. For example, the first yoke 9100 and the second yoke 9300 may be disposed on the first substrate 8100, and the first substrate 8100 may be fixed to the housing 5000.

[0212] The first coil 6130 and the second coil 6330 may be disposed on one surface of the first substrate 8100 , and the first yoke 9100 and the second yoke 9300 may be disposed on the other surface of the first substrate 8100 .

[0213] The first yoke 9100 may be disposed to face the first magnet 6110 in the optical axis (Z-axis) direction, and the second yoke 9300 may be disposed to face the second magnet 6310 in the optical axis (Z-axis) direction.

[0214] Therefore, attractive forces can act between the first yoke 9100 and the first magnet 6110 and between the second yoke 9300 and the second magnet 6310 in the optical axis (Z-axis) direction, respectively.

[0215] Therefore, the base 3000 and the guide member 4000 may be pressed in a direction toward the yoke unit 9000 , and the base 3000 , the guide member 4000 , and the housing 5000 may thus be maintained in contact with the first ball member B1 and the second ball member B2 , respectively.

[0216] The first yoke 9100 and the second yoke 9300 may each be made of a material that can generate attractive forces between the first magnet 6110 and the first yoke 9100 and between the second magnet 6310 and the second yoke 9300. For example, the first yoke 9100 and the second yoke 9300 may be made of a magnetic material.

[0217] In this exemplary embodiment, the first magnet 6110 may be mounted on the guide member 4000, and the second magnet 6310 may be mounted on the base 3000. Therefore, the guide member 4000 may be pulled toward the first yoke 9100 by the attraction force generated between the first yoke 9100 and the first magnet 6110, and the base 3000 may be pulled toward the second yoke 9300 by the attraction force generated between the second yoke 9300 and the second magnet 6310.

[0218] Here, refer to Figure 6 and 11 , the base 3000 may include a third yoke 9500 for pressing the guide member 4000 and the base 3000 toward each other. The third yoke 9500 may be positioned on the base 3000 to be disposed facing the first magnet 6110 in the optical axis (Z axis) direction.

[0219] Therefore, an attractive force may also act between the third yoke 9500 and the first magnet 6110 in the optical axis (Z-axis) direction, and the guide member 4000 and the base 3000 may thus be pressed toward each other.

[0220] Even if attraction acts between the yoke unit 9000 , the first magnet 6110 , and the second magnet 6310 , contact between the respective components may be released by external impact, etc. Therefore, an exemplary embodiment of the present disclosure may include the cover 5300 to improve its reliability against external impact, etc.

[0221] The cover 5300 may be hooked with the housing 5000 .

[0222] The actuator 1 according to an exemplary embodiment of the present disclosure can accurately control the driving force for image stabilization because the relative positions of the first magnet 6110 and the first coil 6130 and the relative positions of the second magnet 6310 and the second coil 6330 do not change even if the supporting portion 2000 moves in the optical axis (Z-axis) direction while performing autofocus.

[0223] Fig.12 is an exploded perspective view showing a carrier and a base; Fig.13A and 13B is a bottom perspective view of the base; and Fig.14 is along Fig. 13B A cross-sectional view taken along line III-III'; and Fig.15 It is a bottom stereogram of the bearing portion.

[0224] also, Fig.16 is along Fig.12 A cross-sectional view taken along line IV-IV'; Fig.17 is along Fig.12 A cross-sectional view taken along line V-V' of ; and Fig.18 is along Fig.12 A cross-sectional view taken along line VI-VI'.

[0225] also, Fig.19 A modified example of the position of the third magnet is shown.

[0226] One or more examples of movement of the carrier 2000 in the optical axis (Z axis) direction will be referred to. Figures 12 to 19 Further description.

[0227] The carrier 2000 may include a main body 2100 and a guide 2300. The main body 2100 may have a quadrilateral frame shape. The guide 2300 may be disposed on one side of the main body 2100. For example, the guide 2300 may extend from one side of the main body 2100 in the optical axis (Z axis) direction.

[0228] The base 3000 may include a seating portion 3100 and a receiving portion 3300. The seating portion 3100 may have a quadrilateral frame shape. The receiving portion 3300 may be disposed on one side of the seating portion 3100. For example, the receiving portion 3300 may extend from one side of the seating portion 3100 in the optical axis (Z axis) direction.

[0229] The main body portion 2100 of the carrier 2000 may be disposed on the seating portion 3100 of the base 3000. Fig.12 , the carrying portion 2000 may be arranged such that an upper surface of the main body portion 2100 faces a lower surface of the seating portion 3100 of the base 3000 .

[0230] When the carrier 2000 moves upward in the optical axis (Z-axis) direction, the seating portion 3100 of the base 3000 may function as a stopper that limits the moving range of the carrier 2000 .

[0231] The second buffer member d2 having elasticity may be provided on at least one of the surfaces of the main body portion 2100 of the bearing portion 2000 and the seating portion 3100 of the base 3000, which surfaces face each other in the optical axis (Z axis) direction. Fig.12 , the second buffer member d2 may be disposed on the upper surface of the main body portion 2100 of the bearing portion 2000. The second buffer member d2 may be disposed on at least three points of the upper surface of the main body portion 2100 of the bearing portion 2000 while being spaced apart from each other. The second buffer member d2 may be made of a material having elasticity. For example, the second buffer member d2 may be made of a rubber material.

[0232] Therefore, the second buffer member d2 may reduce impact and noise occurring when the carrier 2000 and the base 3000 collide with each other.

[0233] The guide portion 2300 of the carrier 2000 may be received in the receiving portion 3300 of the base 3000. To this end, the receiving portion 3300 of the base 3000 may have a receiving space in which the guide portion 2300 of the carrier 2000 is disposed.

[0234] The guide portion 2300 of the bearing 2000 and the receiving portion 3300 of the base 3000 may each include a third guide groove g3, and the third ball member B3 may be disposed in the third guide groove g3. The third guide groove g3 may be elongated in the optical axis (Z axis) direction.

[0235] The third ball member B3 may include a plurality of balls arranged in the optical axis (Z axis) direction. When the bearing portion 2000 moves in the optical axis (Z axis) direction, the plurality of balls may roll in the optical axis (Z axis) direction.

[0236] The third guide groove g3 may include a first groove g31, a second groove g32, a third groove g33, and a fourth groove g34. The first groove g31 and the second groove g32 may be located in the guide portion 2300 of the bearing portion 2000, and the third groove g33 and the fourth groove g34 may be located in the receiving portion 3300 of the base 3000. Each groove may be elongated in the optical axis (Z axis) direction.

[0237] The first groove g31 and the third groove g33 can be arranged relative to each other in a direction perpendicular to the optical axis (Z axis) direction, and some of the multiple balls included in the third ball member B3 (for example, the first ball group BG1 described below) can be arranged in the space between the first groove g31 and the third groove g33.

[0238] In addition, the second groove g32 and the fourth groove g34 can be arranged relative to each other in a direction perpendicular to the optical axis (Z axis) direction, and the remaining portions of the plurality of balls included in the third ball member B3 (for example, the second ball group BG2 described below) can be arranged in the space between the second groove g32 and the fourth groove g34.

[0239] The first groove g31, the third groove g33 and the fourth groove g34 can each have an approximately "V"-shaped cross-section cut in a plane perpendicular to the optical axis (Z-axis) direction, and the second groove g32 can have an approximately "└─┘"-shaped cross-section cut in the same plane.

[0240] Therefore, the first ball group BG1 of the third ball member B3 can contact the first groove g31 at two points and can contact the third groove g33 at two points. In addition, the second ball group BG2 of the third ball member B3 can contact the second groove g32 at one point and can contact the fourth groove g34 at two points.

[0241] That is, the first ball group BG1 of the third ball member B3 may contact its main body at four points, and the second ball group BG2 of the third ball member B3 may contact its main body at three points.

[0242] When the bearing part 2000 moves in the optical axis (Z axis) direction, the first ball group BG1, the first groove g31 and the third groove g33 of the third ball member B3 can be used as a main guide. In addition, the second ball group BG2, the second groove g32 and the fourth groove g34 of the third ball member B3 can be used as an auxiliary guide.

[0243] The first magnetic material 2500 may be disposed on the guide portion 2300 of the carrier 2000, and the second magnetic material 3500 may be disposed on the receiving portion 3300 of the base 3000. When the guide portion 2300 of the carrier 2000 is disposed on the receiving portion 3300 of the base 3000, the first magnetic material 2500 and the second magnetic material 3500 may face each other.

[0244] An attractive force may be generated between the first magnetic material 2500 and the second magnetic material 3500. For example, the attractive force may act between the first magnetic material 2500 and the second magnetic material 3500 in a direction perpendicular to the optical axis (Z axis).

[0245] One of the first magnetic material 2500 and the second magnetic material 3500 may be a magnet, and the other may be a yoke. For another example, both the first magnetic material 2500 and the second magnetic material 3500 may be magnets.

[0246] The third ball member B3 may come into contact with each of the bearing portion 2000 and the base 3000 by an attractive force generated between the first magnetic material 2500 and the second magnetic material 3500 .

[0247] The third ball member B3 may include a first ball group BG1 and a second ball group BG2, and the first ball group BG1 and the second ball group BG2 may each include a plurality of balls arranged in the optical axis (Z-axis) direction.

[0248] The first ball group BG1 and the second ball group BG2 may be spaced apart from each other in a direction perpendicular to the optical axis (Z axis) (eg, Y axis direction). The number of balls of the first ball group BG1 and the number of balls of the second ball group BG2 may be different from each other (see Fig.12).

[0249] For example, the first ball group BG1 may include four or more balls arranged in the optical axis (Z-axis) direction, and the second ball group BG2 may include three or more balls disposed in the optical axis (Z-axis) direction.

[0250] However, the spirit of the present disclosure does not limit the number of balls included in each ball group. On the premise that the number of balls included in the first ball group BG1 and the number of balls included in the second ball group BG2 are different from each other, the number of balls included in each ball group may be changed. Hereinafter, for the sake of convenience of explanation, a description is given based on an exemplary embodiment in which the first ball group BG1 includes four balls and the second ball group BG2 includes three balls.

[0251] Reference Fig.18 In the first ball group BG1, the two balls disposed at the outermost sides in the optical axis (Z axis) direction may have the same diameter, and the balls disposed between them may each have a smaller diameter than the balls disposed at the outermost sides. For example, in the first ball group BG1, the two balls disposed at the outermost sides in the optical axis (Z axis) direction may each have a first diameter, the two balls disposed between them may each have a second diameter, and the first diameter may be greater than the second diameter.

[0252] In addition, two of the three balls in the second ball group BG2 may each have a larger diameter than the other ball. For example, in the second ball group BG2, the two balls may each have a third diameter, the other ball may have a fourth diameter, and the third diameter may be greater than the fourth diameter. In addition, the first diameter and the third diameter may be the same as each other.

[0253] Reference Fig.18 , two balls disposed on the top in the optical axis (Z axis) direction among the three balls of the second ball group BG2 may each have a third diameter, and another ball disposed at the bottom in the optical axis (Z axis) direction may have a fourth diameter. For another example, one ball disposed at the top in the optical axis (Z axis) direction may have a fourth diameter, and the other two balls may have a third diameter. In addition, two balls disposed at the outermost sides in the optical axis (Z axis) direction among the three balls of the second ball group BG2 may each have a third diameter, and another ball disposed therebetween may have a fourth diameter.

[0254] Here, the same diameter may mean the same diameter including a manufacturing error as well as a physically same diameter.

[0255] Therefore, the third ball member B3 may be in contact with the bearing portion 2000 and the base 3000 at at least three points.

[0256] Meanwhile, the distance between the centers of two balls each having the first diameter among the plurality of balls included in the first ball group BG1 and the distance between the centers of two balls each having the third diameter among the plurality of balls included in the second ball group BG2 may be different from each other. For example, the distance between the centers of the two balls each having the first diameter may be greater than the distance between the centers of the two balls each having the third diameter.

[0257] In order to make the bearing part 2000 move parallel to the optical axis (Z axis) direction when moving in the optical axis (Z axis) direction (that is, to prevent the bearing part 2000 from tilting), it is necessary to position the center point CP of the attraction generated between the first magnetic material 2500 and the second magnetic material 3500 in the supporting area "A" formed by connecting the contact points of the third ball member B3 and the bearing part 2000 (or the base 3000) to each other.

[0258] If the center point CP of the attractive force deviates from the support area "A", the carrier 2000 may have a displaced position during its movement, which may lead to a risk of tilting the carrier 2000. Therefore, it is necessary to make the support area "A" as wide as possible.

[0259] In an exemplary embodiment of the present disclosure, each size (e.g., diameter) of some of the plurality of balls included in the third ball member B3 may be intentionally larger than the size (e.g., diameter) of other balls. In this case, the larger balls among the plurality of balls may intentionally contact the bearing portion 2000 (or the base 3000).

[0260] Reference Fig.18 Among the plurality of balls included in the first ball group BG1, the diameters of the two balls disposed at the outermost sides in the optical axis (Z-axis) direction may be larger than the diameters of the other balls, and thus the first ball group BG1 may contact the carrier 2000 (or the base 3000) at two points. In addition, the diameters of two balls among the plurality of balls included in the second ball group BG2 may be larger than the diameter of the other ball, and thus the second ball group BG2 may contact the carrier 2000 (or the base 3000) at two points.

[0261] Therefore, the third ball member B3 including the first ball group BG1 and the second ball group BG2 may contact the bearing part 2000 (or the base 3000) at four points. In addition, the support area "A" formed by connecting the contact points to each other may have a quadrangular shape (eg, a trapezoid).

[0262] Therefore, the support area "A" can be made relatively wide, and the center point CP of the attraction generated between the first magnetic material 2500 and the second magnetic material 3500 can therefore be stably positioned in the support area "A". Therefore, when performing autofocus, it can be ensured that the actuator 1 is stably driven.

[0263] Meanwhile, even when some balls have the same diameter as each other, the actual sizes of the balls may be different from each other due to manufacturing errors. That is, one of the first ball group BG1 and the second ball group BG2 may contact the bearing portion 2000 (or the base 3000) at two points, and the other may contact the bearing portion 2000 (or the base 3000) at one point. In this case, Fig.18 Unlike the shape shown, the support area "A" formed by connecting the contact points to each other may have a triangular shape.

[0264] The first magnetic material 2500 and the second magnetic material 3500 may each be disposed closer to the main guide (e.g., the first groove g31 and the third groove g33) than to the auxiliary guide (e.g., the second groove g32 and the fourth groove g34). For example, when viewed from the first axis (X axis), the center point CP of the attractive force generated between the first magnetic material 2500 and the second magnetic material 3500 may be disposed closer to the main guide than to the auxiliary guide.

[0265] Since it is closer to the main guide, the support area "A" can have a longer length in the optical axis (Z axis) direction. Therefore, by setting the first magnetic material 2500 and the second magnetic material 3500 closer to the main guide, the center point CP of the attraction can be more stably positioned in the support area "A".

[0266] Meanwhile, while performing autofocus, the plurality of balls of the first ball group BG1 and the plurality of balls of the second ball group BG2 may roll in the optical axis (Z axis) direction. Therefore, the support area "A" may have a size that changes based on the movement of the balls included in each ball group. In this case, there is a risk that the center point CP of the attractive force may accidentally deviate from the support area "A" while the actuator 1 is driven.

[0267] In an exemplary embodiment of the present disclosure, the first protrusion 3310 and the second protrusion 3330 protruding toward the third ball member B3 may be each provided on the receiving portion 3300 of the base 3000. For example, the first protrusion 3310 may be provided in the third groove g33 as a main guide, and the second protrusion 3330 may be provided in the fourth groove g34 as an auxiliary guide.

[0268] Here, the first protrusion 3310 and the second protrusion 3330 may have different lengths in the optical axis (Z axis) direction. For example, the length of the second protrusion 3330 in the optical axis (Z axis) direction may be longer than the length of the first protrusion 3310 in the optical axis (Z axis) direction.

[0269] In addition, the length of the third groove g33 as the main guide in the optical axis (Z axis) direction may be different from the length of the fourth groove g34 as the auxiliary guide in the optical axis (Z axis) direction. For example, the length of the third groove g33 in the optical axis (Z axis) direction may be longer than the length of the fourth groove g34 in the optical axis (Z axis) direction.

[0270] In an exemplary embodiment of the present disclosure, the number of the plurality of balls included in the first ball group BG1 and the number of the plurality of balls included in the second ball group BG2 may be different from each other, and the lengths of the respective spaces accommodating the respective ball groups in the optical axis (Z axis) direction may be different from each other. Therefore, the size of the support area "A" can be prevented from changing, or even when the size of the support area "A" changes, the center point CP of the attraction force can be prevented from deviating from the support area "A".

[0271] Reference Fig.12 , the actuator 1 according to an exemplary embodiment of the present disclosure may include a second driving unit 7000. The second driving unit 7000 may generate a driving force in the optical axis (Z axis) direction to move the carrier 2000 in the optical axis (Z axis) direction.

[0272] The second driving unit 7000 may include a third magnet 7100 and a third coil 7300. The third magnet 7100 and the third coil 7300 may be disposed opposite to each other in the optical axis (Z-axis) direction.

[0273] The third magnet 7100 may be disposed on the carrier 2000. For example, the third magnet 7100 may be disposed on at least one of the upper surface and the lower surface of the carrier 2000. The third magnet 7100 may be disposed on at least one of the upper surface and the lower surface of the guide portion 2300 of the carrier 2000. The upper surface of the carrier 2000 may be its surface facing the housing 5000, and the lower surface of the carrier 2000 may be its surface facing the cover 5300.

[0274] The third back yoke 7500 may be disposed between the carrier 2000 and the third magnet 7100. The third back yoke 7500 may prevent leakage of magnetic flux of the third magnet 7100, thereby improving a driving force thereof.

[0275] Reference Fig.12, the third magnet 7100 may include two magnets, and the respective magnets may be disposed on the upper and lower surfaces of the carrier 2000. In addition, the third coil 7300 may include two coils facing the two magnets in the optical axis (Z axis) direction, respectively.

[0276] The third magnet 7100 and the third coil 7300 can face each other in the optical axis (Z axis) direction. Therefore, as the third magnet 7100 moves in the optical axis (Z axis) direction, the spacing distance between the third magnet 7100 and the third coil 7300 in the optical axis (Z axis) direction can change.

[0277] In an exemplary embodiment of the present disclosure, when the spacing distance between the third magnet 7100 and the third coil 7300 disposed on the upper surface of the carrier 2000 decreases, the spacing distance between the third magnet 7100 and the third coil 7300 disposed on the lower surface of the carrier 2000 may increase.

[0278] Therefore, the spacing distance between the third magnet 7100 and the third coil 7300 may be compensated, thereby preventing the magnitude of the driving force of the second driving unit 7000 from being changed based on the movement of the carrier 2000 .

[0279] However, the third magnet 7100 may also be disposed on the upper surface or the lower surface of the carrier 2000 based on the moving distance of the carrier 2000 required to perform auto focusing.

[0280] The third magnet 7100 may be a magnetized monopole magnet such that the N pole and the S pole are arranged in the optical axis (Z axis) direction. For example, the third magnet 7100 may have an S pole on its surface facing the third coil 7300 and an N pole on the opposite surface. The N pole and the S pole may also be magnetized by being arranged in the opposite order. There may be a neutral region between the N pole and the S pole.

[0281] The third coil 7300 may be disposed to face the third magnet 7100. For example, the third coil 7300 may be disposed to face the third magnet 7100 in the optical axis (Z-axis) direction.

[0282] When the third coil 7300 includes two coils, one coil may be disposed on the first substrate 8100 and the other coil may be disposed on the second substrate 8300. The second substrate 8300 may be mounted on the cover 5300 such that the third magnet 7100 and the third coil 7300 face each other in the optical axis (Z axis) direction.

[0283] The third magnet 7100 may be a moving member mounted on the carrier 2000 and moving together with the carrier 2000 in the optical axis (Z axis) direction, and the third coil 7300 may be a fixed member fixed to the first substrate 8100 and / or the second substrate 8300 .

[0284] When power is applied to the third coil 7300 , the carrier 2000 may move in the optical axis (Z-axis) direction by an electromagnetic force generated between the third magnet 7100 and the third coil 7300 .

[0285] The image sensor S may be disposed on the carrier 2000 , and the image sensor S may also move in the optical axis (Z-axis) direction by the movement of the carrier 2000 .

[0286] Fig.19 A modified example of the position of the third magnet 7100 is shown. Fig.19 The exemplary embodiment shown differs from the embodiment shown in that the positions of the third magnet 7100 and the third coil 7300 are different. Fig.12 An exemplary embodiment is shown.

[0287] Reference Fig.19 , any one of the two magnets included in the third magnet 7100 may be disposed on another portion of the lower surface of the carrier 2000 except for a portion where the guide portion 2300 is disposed.

[0288] Reference Fig.12 and Fig.19 , the third magnet 7100 may be disposed on any portion of the lower surface of the carrier 2000 .

[0289] The third magnet 7100 can be set on any portion of the lower surface of the carrier portion 2000, and at least one magnet included in the third magnet 7100 can therefore be set to overlap with the first magnet 6110 or the second magnet 6310 in the optical axis (Z axis) direction based on the position of the third magnet 7100.

[0290] exist Fig.19 In the exemplary embodiment shown, the first magnet 6110 may be disposed to overlap with the third magnet 7100 in the optical axis (Z-axis) direction.

[0291] In this case, since the magnetic field of the first magnet 6110 may affect the third coil 7300, or the magnetic field of the third magnet 7100 may affect the first coil 6130, a yoke may be provided between the first magnet 6110 and the third magnet 7100. The yoke may be provided on at least one of the upper surface of the carrier 2000, the lower surface of the carrier 2000, and the lower surface of the base 3000. The yoke may be made of a magnetic metal material.

[0292] The actuator 1 according to the exemplary embodiment of the present disclosure may detect the position of the carrier 2000 in the optical axis (Z-axis) direction.

[0293] To this end, the actuator 1 may include a second position sensing unit 7700 (see Fig.12 and Fig.17 ). The second position sensing unit 7700 may include a sensing magnet 7710 and a third position sensor 7730. The sensing magnet 7710 may be disposed on the lower surface of the carrier 2000, and the third position sensor 7730 may be disposed on the second substrate 8300 to face the sensing magnet 7710. The third position sensor 7730 may be a Hall sensor.

[0294] exist Fig.12 In the illustrated exemplary embodiment, the second position sensing unit 7700 may include a sensing magnet 7710 and a third position sensor 7730. However, the third position sensor 7730 may be disposed to face the third magnet 7100 without providing a separate sensing magnet 7710.

[0295] Alternatively, the second position sensing unit 7700 may include a sensing magnet 7710 and a sensing coil. For example, the sensing coil may be disposed on the second substrate 8300 to face the sensing magnet 7710. As the distance between the sensing magnet 7710 and the sensing coil in the optical axis (Z axis) direction changes, the inductance level of the sensing coil may change, and the position of the carrier 2000 may be detected based on the change.

[0296] Alternatively, instead of providing a separate sensing magnet and a sensing coil, the third coil 7300 may be used as the second position sensing unit 7700 .

[0297] For example, the position of the carrier 2000 may be detected based on a change in the inductance level of the third coil 7300 .

[0298] For example, the third magnet 7100 may also move as the carrier 2000 moves, and thus the inductance level of the third coil 7300 may change. Therefore, the position of the carrier 2000 may be detected based on the change in the inductance level of the third coil 7300.

[0299] The cover 5300 may be coupled to the housing 5000 to cover at least a portion of a lower surface of the carrier 2000 .

[0300] Therefore, the cover 5300 may function as a stopper to prevent the carrier 2000 from being separated outward from the actuator 1 .

[0301] In addition, the cover 5300 may cover the lower surface of the guide portion 2300 of the bearing 2000 to prevent the third ball member B3 from being separated from the actuator 1 .

[0302] The third buffer member d3 having elasticity may be provided on at least one of the surfaces of the main body portion 2100 of the carrier 2000 and the cover 5300 (or the second substrate 8300), which surfaces face each other in the optical axis (Z axis) direction. Fig.15 , the third buffer member d3 may be disposed on the lower surface of the main body portion 2100 of the bearing portion 2000. The third buffer member d3 may be disposed on at least three points of the lower surface of the main body portion 2100 of the bearing portion 2000 while being spaced apart from each other. The third buffer member d3 may be made of a material having elasticity. For example, the third buffer member d3 may be made of a rubber material.

[0303] Therefore, the third buffer member d3 may reduce impact and noise occurring when the carrier 2000 and the cover 5300 (or the second substrate 8300) collide with each other.

[0304] The carrier 2000 can move in the optical axis (Z axis) direction relative to the base 3000. In addition, the carrier 2000 can move together with the base 3000 in a direction perpendicular to the optical axis (Z axis).

[0305] For example, the image sensor S may be electrically connected to the first substrate 8100 and / or the second substrate 8300 .

[0306] The image sensor S may be movable in three axis directions, and a connection unit connecting the image sensor S and the first substrate 8100 and / or the second substrate 8300 to each other may be flexible.

[0307] For example, the connection unit may be a flexible film on which a conductor is patterned, or may be a plurality of cables. Therefore, when the image sensor S moves, the connection unit may be bent.

[0308] For another example, a third substrate connected to the image sensor S may be provided. The third substrate may have a flexible connection unit, and the image sensor S and the third substrate may be connected to each other through the connection unit. The connection unit may be a flexible film on which a conductor is patterned, or may be a plurality of cables.

[0309] Reference Figures 3 to 19, the camera module C1 according to the exemplary embodiment of the present disclosure can perform auto focus (AF) and optical image stabilization (OIS) by moving the image sensor S instead of the lens module 1000. That is, the image sensor S can be moved together with the carrier 2000 in the optical axis (Z axis) direction to perform auto focus. In addition, the image sensor S can be moved together with the carrier 2000 in a direction perpendicular to the optical axis (Z axis) to stabilize the captured image.

[0310] For another example, see Fig. 20 , the lens barrel 1100 may be coupled to the carrier 2000. Therefore, the lens barrel 1100 may move together with the carrier 2000 in the direction of the optical axis (Z axis) to perform autofocus. In addition, the lens barrel 1100 may move together with the carrier 2000 in a direction perpendicular to the optical axis (Z axis) to stabilize the captured image.

[0311] The image sensor S may be disposed on the second substrate 8300, and the second substrate 8300 may be mounted on the cover 5300. In addition, the cover 5300 may be coupled to the housing 5000. In this case, the image sensor S may be a fixed member that does not move when performing auto focus (AF) and optical image stabilization (OIS).

[0312] The cover 5300 may include a protrusion 5310 protruding in the optical axis (Z axis) direction, and the protrusion 5310 may be disposed to face the third ball member B3 in the optical axis (Z axis) direction. Therefore, the third ball member B3 may be prevented from being separated from the actuator 1 by the protrusion 5310. For reference, a hole through which the protrusion 5310 passes may be disposed in the second substrate 8300.

[0313] Fig.21 is a schematic exploded perspective view of a camera module according to another exemplary embodiment of the present disclosure; and Fig. 22 is an exploded perspective view illustrating a housing and a base of a camera module according to another exemplary embodiment of the present disclosure.

[0314] When with Figures 3 to 19 When compared to the exemplary embodiment shown, Fig.21 and Fig. 22 The illustrated actuator 2 and camera module C2 are different in configuration for guiding the movement of the base 3000 .

[0315] Reference Fig.21 and Fig. 22 , the base 3000 may be disposed in the housing 5000. Figures 6 to 19Unlike the exemplary embodiment shown in the figure, the guide member 4000 is not provided between the housing 5000 and the base 3000. In addition, since there is no guide member 4000, there is no ball member (ie, Figures 6 to 19 1 , and a first ball member of the exemplary embodiment shown).

[0316] The base 3000 may move in the housing 5000 in a first axis (X axis) direction and a second axis (Y axis) direction.

[0317] The first ball member B1 may be disposed between the housing 5000 and the base 3000. The first ball member B1 may be disposed to contact each of the housing 5000 and the base 3000.

[0318] The first ball member B1 may be used to guide the base 3000 to move in two axis directions when image stabilization is performed. In addition, the first ball member B1 may also be used to maintain a gap between the housing 5000 and the base 3000.

[0319] The first ball member B1 may guide movement of the base 3000 in the first axis (X axis) direction and the second axis (Y axis) direction.

[0320] For example, when the driving force is generated in the first axis (X axis) direction, the first ball member B1 may roll in the first axis (X axis) direction. Therefore, the first ball member B1 may guide the movement of the base 3000 in the first axis (X axis) direction.

[0321] In addition, when the driving force is generated in the second axis (Y axis) direction, the first ball member B1 may roll in the second axis (Y axis) direction. Therefore, the first ball member B1 may guide the movement of the base 3000 in the second axis (Y axis) direction.

[0322] The first ball member B1 may include a plurality of balls disposed between the housing 5000 and the base 3000 .

[0323] The first guide groove g1' in which the first ball member B1 is arranged may be positioned in at least one of the surfaces of the housing 5000 and the base 3000, which face each other in the optical axis (Z axis) direction. A plurality of first guide grooves g1' may be positioned to correspond to a plurality of balls included in the first ball member B1.

[0324] The first ball member B1 may be disposed in the first guide groove g1' and inserted between the housing 5000 and the base 3000. When the first ball member B1 is accommodated in the first guide groove g1', the first ball member B1 may be restricted from moving in the optical axis (Z axis) direction, and the first ball member B1 may move in the first axis (X axis) direction and the second axis (Y axis) direction. For example, the first ball member B1 may roll in the first axis (X axis) direction and the second axis (Y axis) direction.

[0325] The first guide groove g1 ′ may have a circular cross-section cut in a plane perpendicular to the optical axis (Z-axis) direction.

[0326] Meanwhile, the first magnet 6110 and the second magnet 6310 of the first driving unit 6000 may be mounted on the base 3000 .

[0327] exist Fig.21 and Fig. 22 In another exemplary embodiment shown, Figures 6 to 19 Unlike the illustrated exemplary embodiment, the guide member 4000 is not disposed between the housing 5000 and the base 3000 , and the heights of the actuator 2 and the camera module C2 may thus be further reduced.

[0328] Fig.23 is a perspective view of a camera module according to yet another exemplary embodiment of the present disclosure; Fig.24 is a plan view of a first driving unit of a camera module according to still another exemplary embodiment of the present disclosure; and Fig.25 and Fig.26 yes Fig.24 A modified example of the first drive unit is shown.

[0329] When with Fig.21 and 22 When compared to another exemplary embodiment shown in Fig.23 and Fig.24 The illustrated actuator 3 and camera module C3 are different in the configuration of the first driving unit 6000'.

[0330] First refer to Fig.21 and Fig. 22 In another exemplary embodiment shown, the first driving unit 6000 may include a first sub driving unit 6100 and a second sub driving unit 6300. The first sub driving unit 6100 may include a first magnet 6110 and a first coil 6130, and the second sub driving unit 6300 may include a second magnet 6310 and a second coil 6330.

[0331] Furthermore, the first guide groove g1' in which the first ball member B1 is disposed may have a circular cross section cut in a plane perpendicular to the optical axis (Z axis) direction. The first ball member B1 may roll in the first guide groove g1' in a direction perpendicular to the optical axis (Z axis) direction.

[0332] Therefore, when the driving force unintentionally deviates in the first axis (X axis) direction or the second axis (Y axis) direction during the process of generating the driving force, there is a risk that a rotational force with the optical axis (Z axis) as its rotation axis acts on the base 3000.

[0333] exist Fig.21 and Fig. 22 In another exemplary embodiment shown, it may be difficult to generate a driving force that can prevent the occurrence of such a rotational force or counteract the rotational force.

[0334] However, in Figure 23 to Figure 25 In yet another exemplary embodiment shown, the first driving unit 6000' may additionally generate a driving force that counteracts the rotational force.

[0335] Reference Figure 23 to Figure 25 In another exemplary embodiment shown, the first driving unit 6000' may include a first sub driving unit 6100' and a second sub driving unit 6300'. The first sub driving unit 6100' may include a first magnet 6110 and a first coil unit 6130', and the second sub driving unit 6300' may include a second magnet 6310 and a second coil unit 6330'.

[0336] At least one of the first coil unit 6130' and the second coil unit 6330' may include two coils.

[0337] For example, the first coil unit 6130 ′ may include a first sub-coil 6131 and a second sub-coil 6133 , and the second coil unit 6330 ′ may include a third sub-coil 6331 and a fourth sub-coil 6333 .

[0338] The first sub coil 6131 and the second sub coil 6133 may each be disposed to face the first magnet 6110 in the optical axis (Z axis) direction. In addition, the first sub coil 6131 and the second sub coil 6133 may be disposed spaced apart from each other in the longitudinal direction of the first magnet 6110.

[0339] The third sub coil 6331 and the fourth sub coil 6333 may each be disposed to face the second magnet 6310 in the optical axis (Z axis) direction. In addition, the third sub coil 6331 and the fourth sub coil 6333 may be disposed spaced apart from each other in the longitudinal direction of the second magnet 6310.

[0340] Fig.23 and Fig.24 1 shows another exemplary embodiment in which the first coil unit 6130' and the second coil unit 6330' each include two coils. Fig.25 As shown, any one of the first coil unit 6130' and the second coil unit 6330' may include two coils, and the other coil unit may include one coil.

[0341] The first position sensing unit 6500' may include at least three position sensors. When three position sensors are provided, one position sensor may be provided to face either the first magnet 6110 or the second magnet 6310, and the other two position sensors may be provided to face the other of the first magnet 6110 and the second magnet 6310.

[0342] For example, refer to Fig.24 , the first position sensing unit 6500 ′ may include a first position sensor 6510 , a second position sensor 6530 , and a third position sensor 6550 .

[0343] The first position sensor 6510 may be disposed to face the first magnet 6110 in the optical axis (Z axis) direction, and the second position sensor 6530 and the third position sensor 6550 may each be disposed to face the second magnet 6310 in the optical axis (Z axis) direction. The second position sensor 6530 and the third position sensor 6550 may be disposed spaced apart from each other in the longitudinal direction of the second magnet 6310.

[0344] When the base 3000 is rotated due to the rotational force acting with the optical axis (Z axis) as its rotation axis, the second magnet 6310 provided on the base 3000 may also rotate together with the base 3000. The second magnet 6310 may face the second position sensor 6530 and the third position sensor 6550 provided separately from each other, and thus it may be determined whether the base 3000 is rotated by using the second position sensor 6530 and the third position sensor 6550. In addition, the position of the rotating base 3000 may also be detected.

[0345] Reference Fig.24 , the first sub-driving unit 6100' may include two coils, and the second sub-driving unit 6300' may include two coils. Therefore, the two coils and the first magnet 6110 of the first sub-driving unit 6100' and the two coils and the second magnet 6310 of the second sub-driving unit 6300' may interact with each other to generate a driving force that counteracts the rotational force.

[0346] Reference Fig.26, the first sub driving unit 6100 ′ may include two coils, and the second sub driving unit 6300 ′ may include two coils, and the first position sensing unit 6500 ′ may include four position sensors.

[0347] For example, the first position sensing unit 6500 ′ may include a first position sensor 6510 , a second position sensor 6530 , a third position sensor 6550 , and a fourth position sensor 6570 .

[0348] The first position sensor 6510 and the second position sensor 6530 may each be disposed to face the first magnet 6110 in the optical axis (Z axis) direction, and the third position sensor 6550 and the fourth position sensor 6570 may each be disposed to face the second magnet 6310 in the optical axis (Z axis) direction. The first position sensor 6510 and the second position sensor 6530 may be disposed to be spaced apart from each other in the longitudinal direction of the first magnet 6110, and the third position sensor 6550 and the fourth position sensor 6570 may be disposed to be spaced apart from each other in the longitudinal direction of the second magnet 6310.

[0349] Whether the base 3000 rotates and the position of the rotated base 3000 may be detected by using four position sensors, and a rotation force acting on the base 3000 may be offset by using the first sub driving unit 6100 ′ and the second sub driving unit 6300 ′.

[0350] Fig. 27 is a perspective view of a camera module according to still another exemplary embodiment of the present disclosure; and Fig.28 is a schematic exploded perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0351] Reference Fig. 27 and Fig.28 , a camera module C4 according to still another exemplary embodiment of the present disclosure may include a lens module 1000 and an actuator 4 .

[0352] The lens module 1000 may include at least one lens L and a lens barrel 1100. The at least one lens L may be disposed in the lens barrel 1100. When the lens module 1000 includes a plurality of lenses L, the plurality of lenses L may be installed in the lens barrel 1100 along an optical axis (Z axis).

[0353] At least one lens L and the lens barrel 1100 may each have a reference Figure 4 and Figure 5 The structure of the description.

[0354] In this exemplary embodiment, the lens module 1000 may be a moving member that moves when performing auto focus (AF) and optical image stabilization (OIS). For example, auto focus may be performed by moving the lens module 1000 in the optical axis (Z axis) direction, or an optical image may be stabilized by moving the lens module 1000 in a direction perpendicular to the optical axis (Z axis) direction.

[0355] For another example, the image sensor S may be disposed on the carrier 100 instead of the lens module 1000. In this case, auto focus (AF) and optical image stabilization (OIS) may be performed by moving the image sensor S.

[0356] The actuator 4 may include a carrying portion 100 , a base 200 , a guide member 300 , and a housing 400 .

[0357] The carrier 100 can move in the direction of the optical axis (Z axis). Fig.28 , the lens module 1000 may be coupled to the carrier part 100 .

[0358] Therefore, the lens module 1000 may move together with the carrier 100 in the optical axis (Z-axis) direction to perform auto focusing.

[0359] The carrier 100 may be disposed on the base 200. For example, the carrier 100 may be coupled to the base 200 by using the elastic member 500.

[0360] The base 200 can move in a direction perpendicular to the optical axis (Z axis). That is, the base 200 can be a fixed member that does not move in the direction of the optical axis (Z axis) when performing autofocus, and can be a movable member that moves in a direction perpendicular to the optical axis (Z axis) when performing image stabilization.

[0361] The carrier 100 may be disposed on the base 200, and the base 200 and the carrier 100 may thus move together in a direction perpendicular to the optical axis (Z axis) to stabilize the image. When performing autofocus, the carrier 100 may move relative to the base 200.

[0362] The base 200 may be disposed in the housing 400. The guide member 300 may be disposed between the base 200 and the housing 400. For example, the base 200 and the guide member 300 may be sequentially stacked in the housing 400 in the optical axis (Z-axis) direction.

[0363] The guide member 300 may move in a first axis (X axis) direction, and the base 200 may move in the first axis (X axis) direction and a second axis (Y axis) direction.

[0364] For example, the guide member 300 and the base 200 may move together in the first axis (X axis) direction. In addition, the base 200 may move relative to the guide member 300 in the second axis (Y axis) direction.

[0365] The first axis (X axis) direction may indicate a direction perpendicular to the optical axis (Z axis), and the second axis (Y axis) direction may indicate a direction perpendicular to the optical axis (Z axis) direction and the first axis (X axis) direction.

[0366] The first ball member B1 may be disposed between the guide member 300 and the housing 400, and the second ball member B2 may be disposed between the guide member 300 and the base 200. In addition, the third ball member B3 may be disposed between the base 200 and the housing 400.

[0367] The first ball member B1 may be disposed to contact each of the guide member 300 and the housing 400 , the second ball member B2 may be disposed to contact each of the guide member 300 and the base 200 , and the third ball member B3 may be disposed to contact each of the base 200 and the housing 400 .

[0368] The carrier 100 may be disposed on the base 200. For example, the carrier 100 may be stacked on the upper surface of the base 200. When performing autofocus, the base 200 may be a fixed member that does not move in the optical axis (Z axis) direction, and the carrier 100 may be a movable member that moves in the optical axis (Z axis) direction.

[0369] The carrier 100 may be connected to the base 200 by using the elastic member 500. Therefore, the carrier 100 may move in the optical axis (Z-axis) direction relative to the base 200 while being elastically supported by the elastic member 500.

[0370] Fig.29 is a perspective view showing that the lens module, the carrier, and the base are assembled with each other, and the guide member and the housing are exploded; and Fig.30 Observed from the other direction Fig.29 A perspective view of the components shown.

[0371] also, Fig.31 shows a modified example of the type of support of the guide member relative to the housing; and Fig.32 Modified examples of the positions of the first magnet and the first coil are shown.

[0372] Fig.33 is along Fig.29 A cross-sectional view taken along line VII-VII'; and Fig.34 is along Fig.29 A cross-sectional view taken along line VIII-VIII'.

[0373] refer to Figures 29 to 34 One or more examples of the base 200 and the guide member 300 moving in a direction perpendicular to the optical axis (Z axis) are further described.

[0374] The guide member 300 and the base 200 may be disposed in the housing 400. For example, the guide member 300 and the base 200 may be sequentially stacked in the optical axis (Z axis) direction in the housing 400. The guide member 300 may thus be disposed between the housing 400 and the base 200.

[0375] The guide member 300 may have a quadrilateral shape with three sides removed when viewed from the optical axis (Z axis). For example, the guide member 300 may have a “─” shape when viewed from the optical axis (Z axis). That is, the guide member 300 may have a rod shape.

[0376] The guide member 300 may be disposed on one side of the base 200. For example, the guide member 300 may be disposed adjacent to one side surface of the base 200. The receiving groove 210 may be located in the lower surface of the base 200, and the guide member 300 may be disposed in the receiving groove 210 of the base 200.

[0377] The guide member 300 may be inserted into the receiving groove 210 , thereby preventing the actuator 4 and the camera module C4 from having an increased overall height due to the thickness of the guide member 300 .

[0378] The guide member 300 may be disposed in the receiving groove 210 of the base 200 , and it may still be desirable to reduce the thickness of the guide member 300 to further reduce the height of the actuator 4 in the optical axis (Z-axis) direction.

[0379] However, when having a reduced thickness, the guide member 300 may have weaker rigidity and thus lower reliability against external impact, etc.

[0380] Therefore, the guide member 300 may include a reinforcement plate to have enhanced rigidity.

[0381] For example, the reinforcement plate may be insert-injected to be integrally coupled to the guide member 300. In this case, the reinforcement plate may be manufactured integrally with the guide member 300 by injecting a resin material into the mold in a state where the reinforcement plate is fixed in the mold.

[0382] The reinforcing plate may be provided in the guide member 300. In addition, the reinforcing plate may be provided to be partially exposed outwardly from the guide member 300. In this manner, the reinforcing plate may be partially exposed outwardly from the guide member 300 while being integrally formed in the guide member 300, which may improve the bonding force between the reinforcing plate and the guide member 300 and prevent the reinforcing plate from being separated from the guide member 300.

[0383] The reinforcing plate may be a non-magnetic metal so that the reinforcing plate does not affect the magnetic fields of the first magnet 611 and the second magnet 631 of the first driving unit 600 described below.

[0384] The guide member 300 may move in a first axis (X axis) direction, and the base 200 may move in the first axis (X axis) direction and a second axis (Y axis) direction.

[0385] For example, the guide member 300 and the base 200 may move together in the first axis (X axis) direction. In addition, the base 200 may move relative to the guide member 300 in the second axis (Y axis) direction.

[0386] The carrier 100 may be disposed on the base 200, and the lens module 1000 may be disposed on the carrier 100. Therefore, when the base 200 moves in the first axis (X axis) direction and the second axis (Y axis) direction, the carrier 100 and the lens module 1000 may also move in the first axis (X axis) direction and the second axis (Y axis) direction.

[0387] The actuator 4 may include a first driving unit 600. The first driving unit 600 may generate a driving force in a direction perpendicular to the optical axis (Z axis) to move the base 200 in the direction perpendicular to the optical axis (Z axis).

[0388] The first driving unit 600 may include a first sub driving unit 610 and a second sub driving unit 630. The first sub driving unit 610 may generate a driving force in a first axis (X axis) direction, and the second sub driving unit 630 may generate a driving force in a second axis (Y axis) direction.

[0389] The first sub driving unit 610 may include a first magnet 611 and a first coil 613. The first magnet 611 and the first coil 613 may be disposed opposite to each other in the optical axis (Z-axis) direction.

[0390] The first magnet 611 may include two magnets, and the two magnets may be disposed to be spaced apart from each other in the second axis (Y-axis) direction.

[0391] The first coil 613 may include two coils, and the two coils may be disposed to be spaced apart from each other in the second axis (Y-axis) direction.

[0392] The first magnet 611 may be provided on the guide member 300. For example, the mounting groove 310 may be located in the lower surface of the guide member 300, and the first magnet 611 may be provided in the mounting groove 310. The first magnet 611 may be inserted into the mounting groove 310, thereby preventing the actuator 4 and the camera module C4 from having an increased total height due to the thickness of the first magnet 611.

[0393] The first back yoke may be disposed between the guide member 300 and the first magnet 611. The first back yoke may prevent leakage of magnetic flux of the first magnet 611, thereby improving a driving force thereof.

[0394] The first magnet 611 may be magnetized so that one surface thereof (e.g., the surface facing the first coil 613) has an N pole and an S pole. For example, the N pole, the neutral region, and the S pole may be sequentially positioned on one surface of the first magnet 611 facing the first coil 613 in the first axis (X axis) direction.

[0395] The first coil 613 may be disposed to face the first magnet 611. For example, the first coil 613 may be disposed to face the first magnet 611 in the optical axis (Z-axis) direction. The first coil 613 may have a hollow ring shape.

[0396] The first coil 613 may be disposed on the substrate 670. The substrate 670 may be mounted on the housing 400 such that the first magnet 611 and the first coil 613 face each other in the optical axis (Z-axis) direction.

[0397] The housing 400 may include a first through hole 410. For example, the first through hole 410 may pass through the bottom surface of the housing 400 in the optical axis (Z axis) direction. The first coil 613 may be disposed in the first through hole 410 of the housing 400. The first coil 613 may be disposed in the first through hole 410 of the housing 400, thereby preventing the actuator 4 and the camera module C4 from having an increased overall height due to the thickness of the first coil 613.

[0398] The first magnet 611 may be a moving member that is mounted on the guide member 300 and moves together with the guide member 300 , and the first coil 613 may be a fixed member fixed to the base plate 670 and the housing 400 .

[0399] When power is applied to the first coil 613 , the guide member 300 may move in the first axis (X axis) direction by an electromagnetic force generated between the first magnet 611 and the first coil 613 .

[0400] The second sub driving unit 630 may include a second magnet 631 and a second coil 633. The second magnet 631 and the second coil 633 may be disposed to face each other in a direction perpendicular to the optical axis (Z axis), for example, a second axis (Y axis) direction.

[0401] The second magnet 631 may include two magnets, and the two magnets may be disposed to be spaced apart from each other in the second axis (Y-axis) direction.

[0402] The second coil 633 may include two coils, and the two coils may be disposed to be spaced apart from each other in the second axis (Y-axis) direction.

[0403] The second magnet 631 may be disposed on the base 200. For example, the second magnet 631 may be disposed on a side surface of the base 200. The second magnet 631 may be biased toward one side of the side surface of the base 200. That is, the second magnet 631 may be disposed to be spaced apart from the center of the side surface (e.g., the surface extending in the first axis (X axis) direction) of the base 200 in the first axis (X axis) direction.

[0404] Therefore, the second magnet 631 may be disposed adjacent to the guide member 300. For example, the second magnet 631 may be disposed to overlap with the side surface of the guide member 300 in the second axis (Y axis) direction.

[0405] When the driving force generated by the second magnet 631 and the second coil 633 acts at a position far from the guide member 300, a moment of the rotational force acting on the base 200 may occur. However, in this exemplary embodiment, the occurrence of the moment of the rotational force can be prevented by arranging the second magnet 631 and the second coil 633 close to the guide member 300, and the loss of the driving force can be minimized.

[0406] The second back yoke may be disposed between the base 200 and the second magnet 631. The second back yoke may prevent leakage of magnetic flux of the second magnet 631, thereby improving a driving force thereof.

[0407] The second magnet 631 may be magnetized so that one surface thereof (e.g., a surface facing the second coil 633) has an S pole or an N pole. For example, one surface of the second magnet 631 facing the second coil 633 may have an N pole, and the other surface of the second magnet 631 (e.g., a surface opposite to the one surface) may have an S pole.

[0408] The second coil 633 may be disposed to face the second magnet 631. For example, the second coil 633 may be disposed to face the second magnet 631 in a direction perpendicular to the optical axis (Z axis), for example, in a second axis (Y axis) direction. The second coil 633 may have a hollow annular shape.

[0409] The second coil 633 may be disposed on the substrate 670. The substrate 670 may be mounted on the housing 400 such that the second magnet 631 and the second coil 633 face each other in the second axis (Y axis) direction.

[0410] The housing 400 may include a second through hole 430. For example, the second through hole 430 may pass through the side surface of the housing 400 in the second axis (Y axis) direction. The second coil 633 may be disposed in the second through hole 430 of the housing 400. The second coil 633 may be disposed in the second through hole 430 of the housing 400, thereby preventing the actuator 4 and the camera module C4 from having an increased overall size due to the thickness of the second coil 633.

[0411] The second magnet 631 may be a moving member installed on the base 200 and moving together with the base 200 , and the second coil 633 may be a fixed member fixed to the substrate 670 and the housing 400 .

[0412] When power is applied to the second coil 633 , the base 200 may move in the second axis (Y axis) direction by an electromagnetic force generated between the second magnet 631 and the second coil 633 .

[0413] In this exemplary embodiment, the first magnet 611 may be mounted on the guide member 300, and the second magnet 631 may be mounted on the base 200. For another example, both the first magnet 611 and the second magnet 631 may be mounted on the base 200 (see Fig.32 ). In this case, the first magnet 611 may be disposed on a side surface of the base 200 on which the second magnet 631 is not disposed (e.g., a surface extending in the second axis (Y axis) direction). The first magnet 611 and the first coil 613 may be disposed opposite to each other in the optical axis (Z axis) direction.

[0414] The first magnet 611 may be magnetized so that one surface thereof (e.g., a surface facing the first coil 613) has an S pole or an N pole. For example, one surface of the first magnet 611 facing the first coil 613 may have an N pole, and the other surface of the first magnet 611 (e.g., a surface opposite to the one surface) may have an S pole.

[0415] Fig.32 Another exemplary embodiment is shown in which the first magnet 611 may include one magnet and the first coil 613 may include one coil. In this case, the first magnet 611 and the first coil 613 may each be elongated in the second axis (Y axis) direction. For another example, the first magnet 611 may include a plurality of magnets spaced apart from each other in the second axis (Y axis) direction, and the first coil 613 may also include a plurality of magnets spaced apart from each other in the second axis (Y axis) direction.

[0416] like Fig.28 and Fig.29As shown, the first coil 613 and the second coil 633 may be winding coils and mounted on the substrate 670. For another example, the first coil 613 and the second coil 633 may be copper foil patterns stacked and embedded in the substrate 670.

[0417] The first ball member B1 may be disposed between the guide member 300 and the housing 400, and the second ball member B2 may be disposed between the guide member 300 and the base 200. In addition, the third ball member B3 may be disposed between the base 200 and the housing 400.

[0418] The first ball member B1 may be disposed to contact each of the guide member 300 and the housing 400 , the second ball member B2 may be disposed to contact each of the guide member 300 and the base 200 , and the third ball member B3 may be disposed to contact each of the base 200 and the housing 400 .

[0419] The first ball member B1 and the second ball member B2 may be used to guide the movement of the guide member 300 and the base 200 when performing image stabilization. In addition, the ball members may also be used to maintain each gap between the base 200, the guide member 300, and the housing 400.

[0420] Furthermore, the third ball member B3 can roll without restriction in a direction perpendicular to the optical axis (Z axis) as described below, and can help guide the movement of the base 200 while maintaining a gap between the base 200 and the housing 400 .

[0421] The first ball member B1 may guide the movement of the guide member 300 in the first axis (X axis) direction, and the second ball member B2 may guide the movement of the base 200 in the second axis (Y axis) direction.

[0422] For example, when a driving force is generated in the first axis (X axis) direction, the first ball member B1 may roll in the first axis (X axis) direction. Therefore, the first ball member B1 may guide the movement of the guide member 300 in the first axis (X axis) direction.

[0423] In addition, when a driving force is generated in the second axis (Y axis) direction, the second ball member B2 can roll in the second axis (Y axis) direction. Therefore, the second ball member B2 can guide the movement of the base 200 in the second axis (Y axis) direction.

[0424] The first ball member B1 may include a plurality of balls disposed between the guide member 300 and the housing 400. For example, the first ball member B1 may include three balls.

[0425] The second ball member B2 may include a plurality of balls disposed between the base 200 and the guide member 300. For example, the second ball member B2 may include two balls.

[0426] That is, the number of the plurality of balls included in the first ball member B1 and the number of the plurality of balls included in the second ball member B2 may be different from each other, and any one of the first ball member B1 and the second ball member B2 may include at least three balls.

[0427] The guide member 300 has a straight shape, and when the guide member 300 contacts the main body (base 200 and housing 400) at two points, the guide member 300 may tilt. Therefore, in this exemplary embodiment, the guide member 300 needs to contact at least one of the main body (i.e., base 200 and housing 400) at three points. Here, "contact at three points" may indicate the minimum number of contacts required to prevent the guide member 300 from tilting. Therefore, the guide member 300 may contact the main body at four or more points.

[0428] Reference Fig.29 and Fig.30 , the first guide groove g1 in which the first ball member B1 is provided may be located in at least one of the surfaces of the guide member 300 and the housing 400, which surfaces face each other in the optical axis (Z axis) direction. A plurality of first guide grooves g1 may be located to correspond to a plurality of balls included in the first ball member B1.

[0429] The first ball member B1 may be disposed in the first guide groove g1 and inserted between the guide member 300 and the housing 400 .

[0430] When the first ball member B1 is accommodated in the first guide groove g1, the first ball member B1 can be restricted from moving in the optical axis (Z axis) direction or the second axis (Y axis) direction, and the first ball member B1 can move only in the first axis (X axis) direction. For example, the first ball member B1 can roll only in the first axis (X axis) direction.

[0431] To this end, the first guide groove g1 may be elongated in the first axis (X axis) direction.

[0432] Reference Fig.29 and Fig.30 The second guide groove g2 in which the second ball member B2 is provided may be located in at least one of the surfaces of the base 200 and the guide member 300, which surfaces face each other in the optical axis (Z axis) direction. A plurality of second guide grooves g2 may be located to correspond to a plurality of balls included in the second ball member B2.

[0433] The second ball member B2 may be received in the second guide groove g2 and inserted between the base 200 and the guide member 300 .

[0434] When the second ball member B2 is accommodated in the second guide groove g2, the second ball member B2 can be restricted from moving in the optical axis (Z axis) direction or the first axis (X axis) direction, and the second ball member B2 can move only in the second axis (Y axis) direction. For example, the second ball member B2 can roll only in the second axis (Y axis) direction.

[0435] To this end, the second guide groove g2 may be elongated in the second axis (Y axis) direction.

[0436] like Fig.33 As shown, when a driving force is generated in the first axis (X axis) direction, the guide member 300 and the base 200 may move together in the first axis (X axis) direction.

[0437] Here, the first ball member B1 disposed between the guide member 300 and the housing 400 may roll along the first axis (X axis).

[0438] The second ball member B2 may be disposed between the guide member 300 and the base 200 and restricts movement in the first axis (X axis) direction. As a result, when the guide member 300 moves in the first axis (X axis) direction, the base 200 may also move in the first axis (X axis) direction.

[0439] like Fig.34 As shown, when a driving force is generated in the second axis (Y axis) direction, the base 200 may move in the second axis (Y axis) direction.

[0440] Here, the second ball member B2 disposed between the base 200 and the guide member 300 may roll along the second axis (Y axis).

[0441] The guide member 300 may move in a first axis (X axis) direction, and the base 200 may move in the first axis (X axis) direction and a second axis (Y axis) direction.

[0442] The carrier 100 may be disposed on the base 200, and the lens module 1000 may be disposed on the carrier 100. As a result, when the base 200 moves, the carrier 100 and the lens module 1000 may also move in the first axis (X axis) direction and the second axis (Y axis) direction.

[0443] At the same time, the first ball member B1 and the second ball member B2 may be biased toward one side of the base 200, and the base 200 may be tilted accordingly. That is, the components supporting the base 200 (e.g., the first ball member B1, the second ball member B2, and the guide member 300) may all be disposed adjacent to one side surface of the base 200, and the base 200 may be tilted accordingly.

[0444] Therefore, the third ball member B3 may be disposed between the base 200 and the housing 400 .

[0445] The third ball member B3 can be arranged to roll without restriction in a direction perpendicular to the optical axis (Z axis). Therefore, when the base 200 moves in the first axis (X axis) direction, the third ball member B3 can roll in the first axis (X axis) direction, and when the base 200 moves in the second axis (Y axis) direction, the third ball member B3 can roll in the second axis (Y axis) direction.

[0446] The third ball member B3 may assist in guiding the movement of the base 200 while maintaining a gap between the base 200 and the housing 400 , thereby preventing the base 200 from tilting.

[0447] The third guide groove g3 in which the third ball member B3 is provided may be provided on at least one of surfaces of the base 200 and the housing 400 , which surfaces face each other in the optical axis (Z-axis) direction.

[0448] The third ball member B3 may be received in the third guide groove g3 and inserted between the base 200 and the housing 400 .

[0449] When the third ball member B3 is accommodated in the third guide groove g3, the third ball member B3 can be restricted from moving in the optical axis (Z axis) direction, and the third ball member B3 can move in a direction perpendicular to the optical axis (Z axis). For example, the third ball member B3 can roll in the first axis (X axis) direction and the second axis (Y axis) direction.

[0450] The shape of the third guide groove g3 may be different from the shapes of the first guide groove g1 and the second guide groove g2. For example, the third guide groove g3 may have a circular cross section cut in a plane perpendicular to the optical axis (Z axis) direction.

[0451] A buffer member having elasticity may be provided on at least one of the surfaces of the base 200 and the housing 400, which surfaces face each other in a direction perpendicular to the optical axis (Z axis). Fig.10 and Fig.11 The described configuration of the first buffer member d1 may be provided in the base 200 .

[0452] Therefore, the buffer member may reduce impact and noise occurring when the base 200 collides with the housing 400 , wherein the base 200 may move in the first axis (X axis) direction and the second axis (Y axis) direction.

[0453] The actuator 4 can detect the position of the base 200 in a direction perpendicular to the optical axis (Z axis).

[0454] To this end, the actuator 4 may include a first position sensing unit 650. The first position sensing unit 650 may include a first position sensor 651 and a second position sensor 653. The first position sensor 651 may be disposed on the substrate 670 to face the first magnet 611, and the second position sensor 653 may be disposed on the substrate 670 to face the second magnet 631. The first position sensor 651 and the second position sensor 653 may be Hall sensors.

[0455] For another example, the actuator may not include a separate position sensor. In this case, the first coil 613 and the second coil 633 may be used as the first position sensing unit 650.

[0456] For example, the position of the base 200 may be detected based on a change in inductance of the first coil 613 and the second coil 633 .

[0457] For example, as the base 200 moves, the first magnet 611 and the second magnet 631 may also move, and the inductance levels of the first coil 613 and the second coil 633 may change accordingly. Therefore, the position of the base 200 may be detected based on the change in the inductance levels of the first coil 613 and the second coil 633.

[0458] Reference Fig.28 and 29 , the actuator 4 may include a yoke unit 700. The yoke unit 700 may provide pressure to keep the base 200, the guide member 300, and the housing 400 in contact with the first ball member B1 and the second ball member B2.

[0459] The yoke unit 700 may include a first yoke 710 and a second yoke 730, and the first yoke 710 and the second yoke 730 may be fixed to the housing 400. For example, the first yoke 710 and the second yoke 730 may be disposed on a substrate 670, and the substrate 670 may be fixed to the housing 400.

[0460] The first coil 613 may be disposed on one surface of the substrate 670 , and the first and second yokes 710 and 730 may be disposed on another surface of the substrate 670 (eg, a surface opposite to a surface facing the lower surface of the housing 400 ).

[0461] For another example, the yoke unit 700 may be provided on the housing 400. For example, the first yoke 710 and the second yoke 730 may be insert-injected to be integrally coupled to the housing 400. In this case, the first yoke 710 and the second yoke 730 may be manufactured to be integral with the housing 400 by injecting a resin material into the mold in a state where the first yoke 710 and the second yoke 730 are fixed in the mold.

[0462] The first yoke 710 may be disposed to face the first magnet 611 in the optical axis (Z-axis) direction, and the second yoke 730 may be disposed to face the second magnet 631 in the optical axis (Z-axis) direction.

[0463] Therefore, attractive forces may act between the first yoke 710 and the first magnet 611 and between the second yoke 730 and the second magnet 631 in the optical axis (Z-axis) direction, respectively.

[0464] Therefore, the base 200 and the guide member 300 may be pressed in a direction toward the yoke unit 700 , and the base 200 , the guide member 300 , and the housing 400 may thus be maintained in contact with the first ball member B1 and the second ball member B2 , respectively.

[0465] The first yoke 710 and the second yoke 730 may each be made of a material that can generate an attractive force between the first magnet 611 and the first yoke 710 and between the second magnet 631 and the second yoke 730. For example, the first yoke 710 and the second yoke 730 may be made of a magnetic material.

[0466] In this exemplary embodiment, the first magnet 611 may be installed on the guide member 300, and the second magnet 631 may be installed on the base 200. Therefore, the guide member 300 may be pulled toward the first yoke 710 by the attraction force generated between the first yoke 710 and the first magnet 611, and the base 200 may be pulled toward the second yoke 730 by the attraction force generated between the second yoke 730 and the second magnet 631.

[0467] For another example, the yoke unit 700 may include only the second yoke 730 without the first yoke 710. For example, the base 200 may be pulled toward the second yoke 730 by the attraction force generated between the second yoke 730 and the second magnet 631, and the guide member 300 disposed between the base 200 and the housing 400 may also be kept in contact with the first ball member B1 and the second ball member B2.

[0468] The actuator 4 may include a pulling unit 800 so that the third ball member B3 may maintain contact with each of the base 200 and the housing 400 .

[0469] The traction unit 800 may include a first magnetic material 810 and a second magnetic material 830. The first magnetic material 810 and the second magnetic material 830 may be disposed on a surface of the base 200 and a surface of the housing 400, respectively, which surfaces face each other in the optical axis (Z axis) direction.

[0470] For example, the first magnetic material 810 may be disposed on the lower surface of the base 200, and the second magnetic material 830 may be disposed on the bottom surface of the housing 400. The first magnetic material 810 and the second magnetic material 830 may face each other in the optical axis (Z axis) direction.

[0471] The first magnetic material 810 and the second magnetic material 830 may generate an attraction force between each other. For example, the attraction force may act between the first magnetic material 810 and the second magnetic material 830 in the optical axis (Z axis) direction.

[0472] One of the first magnetic material 810 and the second magnetic material 830 may be a magnet, and the other may be a yoke. For another example, both the first magnetic material 810 and the second magnetic material 830 may be magnets.

[0473] The third ball member B3 may come into contact with each of the base 200 and the housing 400 by an attractive force generated between the first magnetic material 810 and the second magnetic material 830 .

[0474] at the same time, Fig.31 A modified example of the type of support of the guide member relative to the housing is shown. Fig.29 and Fig.30 Compared with another exemplary embodiment shown in FIG. Fig.31 The examples shown differ in the type of bearing between the guide member 300 and the housing 400 .

[0475] For example, refer to Fig.31 , the first ball member B1 and the second ball member B2 may each include two balls. Fig.29 and Fig.30 Unlike the illustrated further exemplary embodiment, the number of the plurality of balls included in the first ball member B1 and the number of the plurality of balls included in the second ball member B2 are the same as each other. In addition, the first ball member B1 and the second ball member B2 may each contact the guide member 300 at two points.

[0476] In this case, the guide protrusion 450 may be provided so that the guide member 300 maintains contact with at least one of the base 200 and the housing 400 as a body at three points.

[0477] For example, the guide protrusion 450 may be provided on the lower surface of the housing 400 facing the lower surface of the guide member 300. The guide protrusion 450 and the guide member 300 may be in point contact or line contact with each other. For example, the guide protrusion 450 may have a spherical or hemispherical shape.

[0478] Therefore, the guide member 300 may contact the two balls of the first ball member B1 and the guide protrusion 450 at three points.

[0479] When the guide member 300 moves in the first axis (X axis) direction, the first ball member B1 may roll in the first axis (X axis) direction, and the guide member 300 may slide with respect to the guide protrusion 450 .

[0480] Fig.31 Still another exemplary embodiment is shown in which the guide protrusion 450 may be provided on the lower surface of the housing 400. However, for another example, the guide protrusion 450 may be provided on the lower surface of the guide member 300.

[0481] Fig.35 is an exploded perspective view showing a lens module, an elastic member, a base, and a housing; and Fig.36 is a plan view of the elastic member.

[0482] refer to Fig.35 and Fig.36 One or more examples of movement of the carrier 100 in the optical axis (Z-axis) direction are further described.

[0483] The lens module 1000 may be fixedly disposed on the carrier 100, and the carrier 100 may be disposed on the base 200. For example, the carrier 100 and the base 200 may be sequentially stacked in the optical axis (Z axis) direction. When performing autofocus, the base 200 may be a fixed member that does not move in the optical axis (Z axis) direction, and the carrier 100 may be a movable member that moves in the optical axis (Z axis) direction.

[0484] The carrier 100 may be coupled to the base 200 by using an elastic member 500. The elastic member 500 may have one side fixed to the base 200 and the other side fixed to the carrier 100. Therefore, the carrier 100 may move in the optical axis (Z axis) direction relative to the base 200 while being elastically supported by the elastic member 500.

[0485] When the carrier 100 moves in the optical axis (Z axis) direction relative to the base 200, the elastic member 500 may be elastically deformed in the optical axis (Z axis) direction to support the movement of the carrier 100. The elastic member 500 may be a leaf spring.

[0486] Reference Fig.36 , the elastic member 500 may include a fixed portion 510 , a moving portion 530 , and a bending portion 550 .

[0487] The fixing portion 510 may have a quadrangular frame shape. The fixing portion 510 may be fixed to the base 200.

[0488] The moving portion 530 may be disposed in the fixed portion 510 and may be circular. The moving portion 530 may be fixed to the carrier 100 .

[0489] The curved portion 550 may connect the fixed portion 510 and the moving portion 530 to each other, and may be bent several times to extend. For example, the curved portion 550 may repeatedly extend in a zigzag form to connect the fixed portion 510 and the moving portion 530 to each other.

[0490] The bent portion 550 may be elastically deformed when the carrier 100 moves in the optical axis (Z-axis) direction to support the movement of the carrier 100 .

[0491] Reference Fig.35 , the actuator 4 may include a second driving unit 900. The second driving unit 900 may generate a driving force in the optical axis (Z axis) direction to move the carrier 100 in the optical axis (Z axis) direction.

[0492] The second driving unit 900 may include a third magnet 910 and a third coil 930. The third magnet 910 and the third coil 930 may be arranged to face each other in a direction perpendicular to the optical axis (Z axis) (e.g., a second axis (Y axis) direction). The third magnet 910 may include two magnets, and the third coil 930 may also include two coils.

[0493] The third magnet 910 may be disposed on the carrier 100. For example, the third magnet 910 may be disposed on each of both side surfaces of the carrier 100.

[0494] The third back yoke may be disposed between the carrier 100 and the third magnet 910. The third back yoke may prevent leakage of magnetic flux of the third magnet 910, thereby improving a driving force thereof.

[0495] The third magnet 910 may be a polarized magnet magnetized so that the N pole and the S pole are arranged in the optical axis (Z axis) direction. For example, the third magnet 910 may be magnetized so that its surface facing the third coil 930 has an N pole and an S pole. For example, the N pole, the neutral region, and the S pole may be sequentially positioned on a surface of the third magnet 910 facing the third coil 930 in the optical axis (Z axis) direction. The third magnet 910 may be elongated in the first axis (X axis) direction.

[0496] The third coil 930 may be disposed to face the third magnet 910. For example, the third coil 930 may be disposed to face the third magnet 910 in the second axis (Y axis) direction.

[0497] The third coil 930 may be disposed on the substrate 670 , and the substrate 670 may be mounted on the housing 400 such that the third magnet 910 and the third coil 930 face each other in the second axis (Y-axis) direction.

[0498] The third coil 930 may be disposed in the second through hole 430 of the housing 400 while being mounted on the substrate 670. The third coil 930 may be disposed in the second through hole 430 of the housing 400, thereby preventing the actuator 4 and the camera module C4 from having an increased overall size due to the thickness of the third coil 930.

[0499] The third magnet 910 may be a moving member mounted on the carrier 100 and moving together with the carrier 100 in the optical axis (Z axis) direction, and the third coil 930 may be a fixed member fixed to the substrate 670 and the housing 400 .

[0500] When power is applied to the third coil 930 , the carrier 100 may move in the optical axis (Z-axis) direction by an electromagnetic force generated between the third magnet 910 and the third coil 930 .

[0501] The lens module 1000 may be disposed on the carrier 100 , and the lens module 1000 may also move in the optical axis (Z-axis) direction by movement of the carrier 100 .

[0502] At the same time, the actuator 4 can detect the position of the carrier 100 in the optical axis (Z-axis) direction.

[0503] To this end, the actuator 4 may include a second position sensing unit 690. The second position sensing unit 690 may include a third position sensor 691. The third position sensor 691 may be disposed on the substrate 670 to face the third magnet 910. The third position sensor 691 may be a Hall sensor.

[0504] Alternatively, instead of providing a separate position sensor, the third coil 930 may be used as the second position sensing unit 690 .

[0505] For example, the position of the carrier 100 may be detected based on a change in the inductance level of the third coil 930 .

[0506] For example, as the carrier 100 moves, the third magnet 910 may also move, and the inductance level of the third coil 930 may change accordingly. Therefore, the position of the carrier 100 may be detected based on the change in the inductance level of the third coil 930.

[0507] Fig.37 shows a modified example of the shape and position of the second drive unit; and Fig.38 A modified example of the positions of the second sub driving unit and the second driving unit is shown.

[0508] Fig.37 The example shown is similar to the second drive unit 900 in shape and position. Fig.35 Another exemplary embodiment shown is different. In addition, Fig.38 The example shown is similar to the position of the second sub-drive unit 630 and the second drive unit 900. Fig.35 Yet another exemplary embodiment shown is different.

[0509] First reference Fig.35 , the second magnet 631 of the second sub driving unit 630 may be disposed on the side surface of the base 200 , and the third magnet 910 of the second driving unit 900 may be disposed on the side surface of the bearing portion 100 .

[0510] The side surface of the base 200 on which the second magnet 631 is disposed and the side surface of the carrier 100 on which the third magnet 910 is disposed may face the same direction (e.g., the second axis (Y axis) direction). For example, the side surface of the base 200 on which the second magnet 631 is disposed and the side surface of the carrier 100 on which the third magnet 910 is disposed may each be a surface extending in the first axis (X axis) direction.

[0511] Therefore, the space where the third magnet 910 is disposed may be affected by the second magnet 631, and thus it is difficult to dispose the third magnet 910 at the center of the side surface of the carrier 100. In this case, the driving force generated by the third magnet 910 and the third coil 930 may be biased toward one side of the carrier 100. Here, a moment of rotational force acting on the carrier 100 may occur, and thus the carrier 100 may tilt during its movement.

[0512] Therefore, if Fig.37 As shown, the size of the third magnet 910 can be reduced, and the third magnet 910 can be set at the center of the carrier 100 to prevent the torque of the rotation force from occurring. The third magnet 910 can include two magnets set on both side surfaces of the carrier 100 to ensure sufficient driving force required to perform auto focusing.

[0513] Reference Fig.38 , the two third magnets 910 may be disposed to be spaced apart from each other in the diagonal direction of the carrier 100 , and the two second magnets 631 may also be disposed to be spaced apart from each other in the diagonal direction of the base 200 .

[0514] For example, when viewed from the optical axis (Z axis) direction, one second magnet 631 may be disposed opposite to one third magnet 910 in the second axis (Y axis) direction, and another second magnet 631 may be disposed opposite to another third magnet 910 in the second axis (Y axis) direction.

[0515] When the magnets are arranged in this manner, even if the third magnet 910 is elongated in the first axis (X axis) direction, it is possible to prevent the moment of rotational force from acting on the bearing portion 100 from occurring.

[0516] The actuator 4 may include a cover 420. The cover 420 may be hooked with the housing 400.

[0517] The cover 420 may be coupled to the housing 400 to cover at least a portion of an upper surface of the carrier 100 .

[0518] Therefore, the cover 420 may serve as a stopper to prevent the carrier 100 from being separated outward from the actuator 4 .

[0519] Fig.39 is a perspective view of a camera module according to still another exemplary embodiment of the present disclosure; and Fig.40 is a schematic exploded perspective view of a camera module according to still another exemplary embodiment of the present disclosure.

[0520] Reference Fig.39 and 40 , a camera module C5 according to still another exemplary embodiment of the present disclosure may include a lens module 1000 and an actuator 5 .

[0521] The lens module 1000 may include at least one lens L and a lens barrel 1100. The at least one lens L may be disposed in the lens barrel 1100. When the lens module 1000 includes a plurality of lenses L, the plurality of lenses L may be installed in the lens barrel 1100 along an optical axis (Z axis).

[0522] At least one lens L and the lens barrel 1100 may each have a reference Figure 4 and Figure 5 The structure of the description.

[0523] In this exemplary embodiment, the lens module 1000 may be a moving member that moves when performing auto focus (AF) and optical image stabilization (OIS). For example, auto focus may be performed by moving the lens module 1000 in the direction of the optical axis (Z axis), or an optical image may be stabilized by moving the lens module 1000 in a direction perpendicular to the optical axis (Z axis).

[0524] In addition, the lens module 1000 may be a fixed member that does not move when a driving force is generated in another direction perpendicular to the optical axis (Z axis). For example, when a driving force is generated in another direction perpendicular to the optical axis (Z axis), the image sensor S may move to perform optical image stabilization (OIS).

[0525] That is, in this exemplary embodiment, when moving in one of the two axial movements required for image stabilization, the image sensor S can move instead of the lens module 1000. Therefore, image stabilization can be performed by a smaller driving force, and the components included in the actuator 5 can be made smaller.

[0526] The actuator 5 may include a lens holder 10 , a carrying portion 20 , a housing 30 , and a guide member 40 .

[0527] The housing 30 may have a quadrilateral box shape with an open top and bottom. The housing 30 may be a fixed member that does not move when auto focusing and image stabilization are performed.

[0528] The guide member 40 may be disposed on a bottom portion of the housing 30 , and the image sensor S may be disposed on the guide member 40 .

[0529] The guide member 40 may move in any direction (eg, the first axis (X axis) direction) perpendicular to the optical axis (Z axis). That is, the guide member 40 may move relative to the housing 30 .

[0530] The image sensor S may be disposed on the guide member 40 , and the guide member 40 may move together with the image sensor S to perform image stabilization.

[0531] The lens module 1000 may be coupled to the lens holder 10 . The lens holder 10 may be disposed in the carrier 20 , and the carrier 20 may be disposed in the housing 30 .

[0532] The carrier 20 can move in the optical axis (Z axis) direction. That is, the carrier 20 can move in the housing 30 in the optical axis (Z axis) direction.

[0533] The lens holder 10 may be disposed in the carrying portion 20 , and thus the lens holder 10 may also move together with the carrying portion 20 in the optical axis (Z-axis) direction, thereby performing auto-focusing.

[0534] The lens holder 10 can move in another direction (for example, the second axis (Y axis) direction) perpendicular to the optical axis (Z axis) in the carrier 20. That is, the lens holder 10 can be a moving member that moves in the optical axis (Z axis) direction when performing autofocus, and can be a moving member that moves in one direction perpendicular to the optical axis (Z axis) even when performing image stabilization.

[0535] The first axis (X axis) direction may indicate a direction perpendicular to the optical axis (Z axis), and the second axis (Y axis) direction may indicate a direction perpendicular to the optical axis (Z axis) direction and the first axis (X axis) direction.

[0536] The first ball member B1 may be disposed between the guide member 40 and the housing 30 , and the second ball member B2 may be disposed between the bearing portion 20 and the lens holder 10 .

[0537] The first ball member B1 may be disposed to contact each of the guide member 40 and the housing 30 , and the second ball member B2 may be disposed to contact each of the bearing portion 20 and the lens holder 10 .

[0538] When the guide member 40 moves relative to the housing 30 in a direction perpendicular to the optical axis (Z axis), the first ball member B1 may roll in the direction perpendicular to the optical axis (Z axis) to support the movement of the guide member 40 .

[0539] When the lens holder 10 moves relative to the bearing portion 20 in a direction perpendicular to the optical axis (Z axis), the second ball member B2 can roll in the direction perpendicular to the optical axis (Z axis) to support the movement of the lens holder 10 .

[0540] The third ball member B3 may be disposed between the bearing portion 20 and the housing 30. The third ball member B3 may be disposed to contact each of the bearing portion 20 and the housing 30.

[0541] When the bearing portion 20 moves in the optical axis (Z axis) direction relative to the housing 30 , the third ball member B3 can roll in the optical axis (Z axis) direction to support the movement of the bearing portion 20 .

[0542] Fig.41 is a perspective view illustrating that a guide member, a first driving unit, an image sensor, and a substrate are exploded in a camera module according to still another exemplary embodiment of the present disclosure.

[0543] refer to Fig.41 One or more examples of the movement of the guide member 40 in the direction perpendicular to the optical axis (Z axis) are further described.

[0544] The guide member 40 may be disposed on a bottom portion of the housing 30 .

[0545] The guide member 40 may have a quadrilateral frame shape, and a channel hole 41 may be formed at the center thereof. The image sensor S may be mounted on the guide member 40 , and light passing through the lens module 1000 may pass through the channel hole 41 to be received by the image sensor S.

[0546] The guide member 40 may be provided on the bottom portion of the housing 30 , and it may be desirable to reduce the thickness of the guide member 40 to reduce the height of the actuator 5 in the optical axis (Z-axis) direction.

[0547] However, when having a reduced thickness, the guide member 40 may have weaker rigidity and thus lower reliability against external impact, etc.

[0548] Therefore, the guide member 40 may include a reinforcement plate to have enhanced rigidity.

[0549] For example, the reinforcement plate may be insert-injected to be integrally coupled to the guide member 40. In this case, the reinforcement plate may be manufactured integrally with the guide member 40 by injecting a resin material into the mold in a state where the reinforcement plate is fixed in the mold.

[0550] The reinforcing plate may be provided in the guide member 40. In addition, the reinforcing plate may be provided to be partially exposed outwardly from the guide member 40. In this way, the reinforcing plate may be partially exposed outwardly from the guide member 40 while being integrally formed in the guide member 40, which may improve the bonding force between the reinforcing plate and the guide member 40 and prevent the reinforcing plate from being separated from the guide member 40.

[0551] Meanwhile, the reinforcing plate may be a non-magnetic metal so as not to affect the magnetic field of the first driving unit 50 described below.

[0552] The guide member 40 is movable in the first axis (X axis) direction.

[0553] The image sensor S may be disposed on the guide member 40 , and the guide member 40 may move together with the image sensor S in a first axis (X axis) direction.

[0554] The actuator 5 may include a first driving unit 50. The first driving unit 50 may generate a driving force in a direction perpendicular to the optical axis (Z axis) (eg, a first axis (X axis) direction) to move the guide member 40 in the direction perpendicular to the optical axis (Z axis).

[0555] The first driving unit 50 may include a first magnet 51 and a first coil 53. The first magnet 51 and the first coil 53 may be disposed opposite to each other in the optical axis (Z-axis) direction.

[0556] The first magnet 51 may include two magnets, and the first coil 53 may include two coils.

[0557] The first magnet 51 may be disposed on the guide member 40. For example, the first magnet 51 may be disposed on the lower surface of the guide member 40. The mounting groove 43 in which the first magnet 51 is disposed may be positioned on the lower surface of the guide member 40. The first magnet 51 may be inserted into the mounting groove 43, thereby preventing the actuator 5 and the camera module C5 from having an increased overall height due to the thickness of the first magnet 51.

[0558] The first back yoke may be disposed between the guide member 40 and the first magnet 51. The first back yoke may prevent leakage of magnetic flux of the first magnet 51, thereby improving a driving force thereof.

[0559] The first magnet 51 may be magnetized so that one surface thereof (e.g., a surface facing the first coil 53) has an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially positioned in the first axis (X axis) direction on one surface of the first magnet 51 facing the first coil 53. The first magnet 51 may be elongated in the second axis (Y axis) direction.

[0560] The other surface (eg, the surface opposite to the one surface) of the first magnet 51 may be magnetized to have an S pole and an N pole. For example, an S pole, a neutral region, and an N pole may be sequentially positioned on the other surface of the first magnet 51 along the first axis (X axis) direction.

[0561] The first coil 53 may be disposed to face the first magnet 51. For example, the first coil 53 may be disposed to face the first magnet 51 in the optical axis (Z axis) direction. The first coil 53 may have a hollow annular shape and may be elongated in the second axis (Y axis) direction.

[0562] The first coil 53 may be disposed on the first substrate 91. The first substrate 91 may be mounted on the housing 30 such that the first magnet 51 and the first coil 53 face each other in the optical axis (Z-axis) direction.

[0563] The first magnet 51 may be a moving member mounted on the guide member 40 and moving together with the guide member 40 , and the first coil 53 may be a fixed member fixed to the first substrate 91 and the housing 30 .

[0564] When power is applied to the first coil 53 , the guide member 40 may move in the first axis (X axis) direction by an electromagnetic force generated between the first magnet 51 and the first coil 53 .

[0565] like Fig.41 As shown, the first coil 53 may be a winding coil and mounted on the first substrate 91. For another example, the first coil 53 may be a copper foil pattern stacked and embedded in the first substrate 91.

[0566] The first ball member B1 may be disposed between the guide member 40 and the housing 30 .

[0567] The first ball member B1 may be disposed to be in contact with each of the guide member 40 and the housing 30 .

[0568] The first ball member B1 may be used to guide the movement of the guide member 40 when image stabilization is performed. In addition, the first ball member B1 may also be used to maintain a gap between the guide member 40 and the housing 30 .

[0569] The first ball member B1 can guide the movement of the guide member 40 in the first axis (X axis) direction. For example, when a driving force is generated in the first axis (X axis) direction, the first ball member B1 can roll in the first axis (X axis) direction. Therefore, the first ball member B1 can guide the movement of the guide member 40 in the first axis (X axis) direction.

[0570] The first ball member B1 may include a plurality of balls disposed between the guide member 40 and the housing 30 .

[0571] Reference Fig.41 The first guide groove g1 in which the first ball member B1 is provided may be located in at least one of the surfaces of the guide member 40 and the housing 30, which surfaces face each other in the optical axis (Z axis) direction. A plurality of first guide grooves g1 may be located to correspond to a plurality of balls included in the first ball member B1.

[0572] The first ball member B1 may be disposed in the first guide groove g1 and inserted between the guide member 40 and the housing 30 .

[0573] When the first ball member B1 is accommodated in the first guide groove g1, the first ball member B1 can be restricted from moving in the optical axis (Z axis) direction or the second axis (Y axis) direction, and the first ball member B1 can move only in the first axis (X axis) direction. For example, the first ball member B1 can roll only in the first axis (X axis) direction.

[0574] To this end, the first guide groove g1 may be elongated in the first axis (X axis) direction.

[0575] Meanwhile, the actuator 5 may include a first yoke unit 81. The first yoke unit 81 may provide pressure to keep the guide member 40 and the housing 30 in contact with the first ball member B1.

[0576] The first yoke unit 81 may be disposed on the housing 30. For example, the first yoke unit 81 may be disposed on a lower surface of the housing 30. The first yoke unit 81 may include two yokes.

[0577] The first yoke unit 81 may be disposed to face the first magnet 51 in the optical axis (Z-axis) direction.

[0578] Therefore, an attractive force can act between the first yoke unit 81 and the first magnet 51 in the optical axis (Z-axis) direction.

[0579] Therefore, the guide member 40 may be pressed in a direction toward the first yoke unit 81 , and the guide member 40 and the housing 30 may thus be kept in contact with the first ball member B1 .

[0580] The first yoke unit 81 may be made of a material that can generate an attractive force between the first magnet 51 and the first yoke unit 81. For example, the first yoke unit 81 may be made of a magnetic material.

[0581] Fig.42 It is an exploded stereogram of the lens module, the lens bracket and the bearing part.

[0582] Will refer to Fig.42 One or more examples of movement of the lens holder 10 in a direction perpendicular to the optical axis (Z axis) are further described.

[0583] The lens module 1000 may be coupled to the lens holder 10 , and the lens holder 10 may be disposed in the carrier 20 .

[0584] The lens holder 10 is movable in the second axis (Y axis) direction.

[0585] The lens module 1000 may be disposed on the lens holder 10 , and the lens holder 10 may move in the second axis (Y axis) direction together with the lens module 1000 .

[0586] The actuator 5 may include a second driving unit 60. The second driving unit 60 may generate a driving force in a direction perpendicular to the optical axis (Z axis) (eg, a second axis (Y axis) direction) to move the lens holder 10 in a direction perpendicular to the optical axis (Z axis).

[0587] The second driving unit 60 may include a second magnet 61 and a second coil 63. The second magnet 61 and the second coil 63 may be disposed to face each other in a direction perpendicular to the optical axis (Z axis), for example, a second axis (Y axis) direction.

[0588] The second magnet 61 may include two magnets, and the second coil 63 may include two coils.

[0589] The second magnet 61 may be disposed on the lens holder 10. For example, the second magnet 61 may be disposed on a side surface of the lens holder 10.

[0590] The second back yoke may be disposed between the side surface of the lens holder 10 and the second magnet 61. The second back yoke may prevent the magnetic flux of the second magnet 61 from leaking, thereby improving the driving force thereof.

[0591] The second magnet 61 may be magnetized so that one surface thereof (e.g., the surface facing the second coil 63) has an N pole or an S pole. For example, one surface of the second magnet 61 facing the second coil 63 may have an S pole, and the other surface of the second magnet 61 (e.g., the side facing the side surface of the lens holder 10) may have an N pole. The N pole and the S pole may also be magnetized by being arranged in the opposite order. There may be a neutral region between the N pole and the S pole. The second magnet 61 may be elongated in the direction of the first axis (X axis).

[0592] The second coil 63 may be disposed to face the second magnet 61. For example, the second coil 63 may be disposed to face the second magnet 61 in the second axis (Y axis) direction. The second coil 63 may have a hollow annular shape and may be elongated in the first axis (X axis) direction.

[0593] The second coil 63 may be disposed on the second substrate 93. The second substrate 93 may be mounted on the housing 30 such that the second magnet 61 and the second coil 63 face each other in the second axis (Y axis) direction.

[0594] The second substrate 93 may have The shape of the conical plane and can be installed on three side surfaces of the housing 30.

[0595] The second magnet 61 may be a moving member that is mounted on the lens holder 10 and moves together with the lens holder 10 , and the second coil 63 may be a fixed member that is fixed to the second substrate 93 and the housing 30 .

[0596] When power is applied to the second coil 63 , the lens holder 10 may move in the second axis (Y axis) direction by an electromagnetic force generated between the second magnet 61 and the second coil 63 .

[0597] like Fig.42 As shown, the second coil 63 may be a winding coil and mounted on the second substrate 93. For another example, the second coil 63 may be a copper foil pattern stacked and embedded in the second substrate 93.

[0598] The second ball member B2 may be disposed between the lens holder 10 and the bearing portion 20 .

[0599] The second ball member B2 may be disposed to contact each of the lens holder 10 and the bearing portion 20 .

[0600] The second ball member B2 may be used to guide the movement of the lens holder 10 when image stabilization is performed. In addition, the second ball member B2 may also be used to maintain a gap between the lens holder 10 and the bearing portion 20.

[0601] The second ball member B2 can guide the movement of the lens holder 10 in the second axis (Y axis) direction. For example, when a driving force is generated in the second axis (Y axis) direction, the second ball member B2 can roll in the second axis (Y axis) direction. Therefore, the second ball member B2 can guide the movement of the lens holder 10 in the second axis (Y axis) direction.

[0602] The second ball member B2 may include a plurality of balls disposed between the lens holder 10 and the bearing portion 20 .

[0603] Reference Fig.42 , the second guide groove g2 in which the second ball member B2 is provided may be positioned in at least one of the surfaces of the lens holder 10 and the bearing portion 20, which surfaces face each other in the optical axis (Z axis) direction. A plurality of second guide grooves g2 may be positioned to correspond to a plurality of balls included in the second ball member B2.

[0604] The second ball member B2 may be disposed in the second guide groove g2 and inserted between the lens holder 10 and the bearing portion 20 .

[0605] When the second ball member B2 is accommodated in the second guide groove g2, the second ball member B2 can be restricted from moving in the optical axis (Z axis) direction or the first axis (X axis) direction, and the second ball member B2 can move only in the second axis (Y axis) direction. For example, the second ball member B2 can roll only in the second axis (Y axis) direction.

[0606] To this end, the second guide groove g2 may be elongated in the second axis (Y axis) direction.

[0607] The actuator 5 may include a second yoke unit 83. The second yoke unit 83 may provide pressure to keep the lens holder 10 and the bearing portion 20 in contact with the second ball member B2.

[0608] The second yoke unit 83 may be disposed on the carrier 20. For example, the second yoke unit 83 may be disposed on the bottom surface of the carrier 20. The second yoke unit 83 may include two yokes.

[0609] The second yoke unit 83 may be disposed to face the second magnet 61 in the optical axis (Z-axis) direction.

[0610] Therefore, an attractive force can act between the second yoke unit 83 and the second magnet 61 in the optical axis (Z-axis) direction.

[0611] Therefore, the lens holder 10 may be pressed in a direction toward the second yoke unit 83 , and the lens holder 10 and the bearing portion 20 may thus be kept in contact with the second ball member B2 .

[0612] The second yoke unit 83 may be made of a material that can generate an attractive force between the second yoke unit 83 and the second magnet 61. For example, the second yoke unit 83 may be made of a magnetic material.

[0613] The first magnet 51 and the second magnet 61 may be disposed perpendicularly to each other based on a plane perpendicular to the optical axis (Z axis), and the first coil 53 and the second coil 63 may also be disposed perpendicularly to each other based on a plane perpendicular to the optical axis (Z axis).

[0614] The actuator 5 can detect the positions of the guide member 40 and the lens holder 10 in a direction perpendicular to the optical axis (Z axis).

[0615] To this end, the actuator 5 may include a first position sensing unit 55 and a second position sensing unit 65 (see Figure 40 to Figure 42 ). The first position sensing unit 55 may be disposed on the first substrate 91 to face the first magnet 51, and the second position sensing unit 65 may be disposed on the second substrate 93 to face the second magnet 61. The first position sensing unit 55 and the second position sensing unit 65 may be Hall sensors.

[0616] Meanwhile, for another example, the actuator 5 may not include a separate Hall sensor. In this case, the first coil 53 and the second coil 63 may be used as the first position sensing unit 55 and the second position sensing unit 65, respectively.

[0617] For example, the positions of the guide member 40 and the lens holder 10 may be detected based on changes in the inductance of the first coil 53 and the second coil 63 .

[0618] For example, as the guide member 40 and the lens holder 10 move, the first magnet 51 and the second magnet 61 may also move, and the inductance levels of the first coil 53 and the second coil 63 may change accordingly. Therefore, the positions of the guide member 40 and the lens holder 10 may be detected based on the changes in the inductance levels of the first coil 53 and the second coil 63.

[0619] Fig.43 is along Fig.39 A cross-sectional view taken along line IX-IX'; and Fig.44 is along Fig.39 A cross-sectional view taken along line XX'.

[0620] like Fig.44 As shown, when a driving force is generated in the first axis (X axis) direction, the guide member 40 may move in the first axis (X axis) direction.

[0621] Here, the first ball member B1 disposed between the guide member 40 and the housing 30 may roll along the first axis (X axis).

[0622] like Fig.43 As shown, when a driving force is generated in the second axis (Y axis) direction, the lens holder 10 can move in the second axis (Y axis) direction.

[0623] Here, the second ball member B2 disposed between the lens holder 10 and the bearing portion 20 may roll along the second axis (Y axis).

[0624] The guide member 40 may move in a first axis (X axis) direction, and the lens holder 10 may move in a second axis (Y axis) direction.

[0625] A buffer member having elasticity may be provided on at least one of surfaces of the guide member 40 and the housing 30 , which surfaces face each other in a direction perpendicular to the optical axis (Z axis). The buffer member may be provided on a side surface of the guide member 40 .

[0626] In addition, a buffer member having elasticity may be provided on at least one of surfaces of the lens holder 10 and the bearing portion 20 facing each other in a direction perpendicular to the optical axis (Z axis). The buffer member may be provided on a side surface of the lens holder 10 .

[0627] For example, refer to Fig.10 and Fig.11 The described configuration of the first buffer member d1 may be provided in the guide member 40 and the lens holder 10 .

[0628] Therefore, the buffer member may reduce impact and noise when the guide member 40 and the housing 30 collide with each other or the lens holder 10 and the carrier 20 collide with each other.

[0629] Fig.45 is a perspective view showing that a housing and a third driving unit are exploded in a camera module according to still another exemplary embodiment of the present disclosure; and Fig.46 is along Fig.39 A cross-sectional view taken along line XI-XI'.

[0630] Will refer to Fig.45 and Fig.46 One or more examples of the movement of the carrier 20 in the optical axis (Z-axis) direction are further described.

[0631] The lens module 1000 may be coupled to the lens holder 10, and the lens holder 10 may be disposed in the carrier 20. In addition, the carrier 20 may be disposed in the housing 30.

[0632] The carrier 20 is movable in the housing 30 in the optical axis (Z-axis) direction.

[0633] The lens module 1000 and the lens holder 10 may be disposed on the carrier 20 , and the carrier 20 may move in an optical axis (Z-axis) direction together with the lens module 1000 and the lens holder 10 .

[0634] The actuator 5 may include a third driving unit 70. The third driving unit 70 may generate a driving force in the optical axis (Z axis) direction to move the carrier 20 in the optical axis (Z axis) direction.

[0635] The third driving unit 70 may include a third magnet 71 and a third coil 73. The third magnet 71 and the third coil 73 may be disposed opposite to each other in a direction perpendicular to the optical axis (Z axis), for example, in a first axis (X axis) direction.

[0636] The third magnet 71 may be disposed on the carrier 20. For example, the third magnet 71 may be disposed on a side surface of the carrier 20.

[0637] The third back yoke may be disposed between the side surface of the bearing portion 20 and the third magnet 71. The third back yoke may prevent the magnetic flux of the third magnet 71 from leaking, thereby improving the driving force thereof.

[0638] The third magnet 71 may be magnetized so that one surface thereof (e.g., the surface facing the third coil 73) has an N pole and an S pole. For example, an N pole, a neutral region, and an S pole may be sequentially positioned in the optical axis (Z axis) direction on one surface of the third magnet 71 facing the third coil 73. The third magnet 71 may be elongated in the second axis (Y axis) direction.

[0639] The other surface (eg, the surface opposite to the one surface) of the third magnet 71 may be magnetized to have an S pole and an N pole. For example, an S pole, a neutral region, and an N pole may be sequentially positioned on the other surface of the third magnet 71 along the optical axis (Z axis) direction.

[0640] The third coil 73 may be disposed to face the third magnet 71. For example, the third coil 73 may be disposed to face the third magnet 71 in the first axis (X axis) direction. The third coil 73 may have a hollow annular shape and may be elongated in the second axis (Y axis) direction.

[0641] The third coil 73 may be disposed on the second substrate 93. The second substrate 93 may be mounted on the housing 30 such that the third magnet 71 and the third coil 73 face each other in the first axis (X axis) direction.

[0642] The third magnet 71 may be a moving member that is mounted on the carrier 20 and moves together with the carrier 20 , and the third coil 73 may be a fixed member that is fixed to the second substrate 93 and the housing 30 .

[0643] When power is applied to the third coil 73 , the carrier 20 may move in the optical axis (Z-axis) direction by an electromagnetic force generated between the third magnet 71 and the third coil 73 .

[0644] like Fig.45 As shown, the third coil 73 may be a winding coil and mounted on the second substrate 93. For another example, the third coil 73 may be a copper foil pattern stacked and embedded in the second substrate 93.

[0645] The third ball member B3 may be disposed between the bearing portion 20 and the housing 30 .

[0646] The third ball member B3 may be disposed in contact with each of the bearing portion 20 and the housing 30 .

[0647] The third ball member B3 may be used to guide the movement of the bearing portion 20 when performing autofocusing. In addition, the third ball member B3 may also be used to maintain a gap between the bearing portion 20 and the housing 30.

[0648] The third ball component B3 can guide the movement of the bearing part 20 in the direction of the optical axis (Z axis). For example, when a driving force is generated in the direction of the optical axis (Z axis), the third ball component B3 can roll in the direction of the optical axis (Z axis). Therefore, the third ball component B3 can guide the movement of the bearing part 20 in the direction of the optical axis (Z axis).

[0649] The third ball member B3 may include a plurality of balls disposed between the bearing portion 20 and the housing 30 .

[0650] Reference Fig.45 The third guide groove g3 in which the third ball member B3 is provided may be positioned in at least one of the surfaces of the bearing portion 20 and the housing 30, which surfaces face each other in the first axis (X axis) direction. A plurality of third guide grooves g3 may be positioned to correspond to a plurality of balls included in the third ball member B3.

[0651] The third ball member B3 may be disposed in the third guide groove g3 and inserted between the bearing portion 20 and the housing 30 .

[0652] The third guide groove g3 may be elongated in the optical axis (Z-axis) direction.

[0653] The actuator 5 may include a third yoke unit 85. The third yoke unit 85 may provide pressure to keep the bearing portion 20 and the housing 30 in contact with the third ball member B3.

[0654] The third yoke unit 85 may be disposed on the second substrate 93. For example, the third coil 73 may be disposed on one surface of the second substrate 93, and the third yoke unit 85 may be disposed on the other surface of the second substrate 93.

[0655] The third yoke unit 85 may be disposed to face the third magnet 71 in the first axis (X-axis) direction.

[0656] Therefore, an attractive force may act between the third yoke unit 85 and the third magnet 71 in the first axis (X-axis) direction.

[0657] Therefore, the bearing portion 20 may be pressed in a direction toward the third yoke unit 85 , and the bearing portion 20 and the housing 30 may thus be kept in contact with the third ball member B3 .

[0658] The third yoke unit 85 may be made of a material that can generate an attractive force between the third yoke unit 85 and the third magnet 71. For example, the third yoke unit 85 may be made of a magnetic material.

[0659] The number of the plurality of balls included in the third ball member B3, the shape of the third guide groove g3, the configuration in which the center point CP of the attractive force is set in the support area "A", etc. are the same as those of the reference Fig.12 , Fig.13A , Fig. 13B , Fig.14 and Fig.18 The same as those in the described structure.

[0660] The actuator 5 can detect the position of the carrier 20 in the optical axis (Z-axis) direction.

[0661] To this end, the actuator may include a third position sensing unit 75. The third position sensing unit 75 may be disposed on the second substrate 93 to face the third magnet 71. The third position sensing unit 75 may be a Hall sensor.

[0662] For another example, the third position sensing unit 75 may include a sensing yoke and a sensing coil. The sensing coil may include two coils arranged in the optical axis (Z axis) direction. The two coils may be arranged to face the sensing yoke. The sensing yoke may be arranged on the bearing portion 20 and may be a magnetic material and / or a conductor.

[0663] However, the actuator 5 may not include a separate sensing yoke, and in this case, the sensing coil may be disposed to face the third magnet 71 .

[0664] Therefore, the position of the carrier 20 may be detected based on a change in the inductance level of the sensing coil.

[0665] For example, as the carrier 20 moves, the sensing yoke may also move, and the inductance level of the sensing coil may change accordingly. Therefore, the position of the carrier 20 may be detected based on the change in the inductance level of the sensing coil.

[0666] The actuator 5 may include a cover 31. The cover 31 may be hooked with the housing 30.

[0667] The cover 31 may be coupled to the housing 30 to cover at least a portion of an upper surface of the lens holder 10 .

[0668] Therefore, the cover 31 may function as a stopper to prevent the lens holder 10 from being separated outward from the actuator 5 .

[0669] In addition, the cover 31 may be provided to prevent the third ball member B3 from being separated from the actuator 5. That is, the cover 31 may cover an upper portion of a region where the third ball member B3 is located.

[0670] Fig.47 is an exploded perspective view showing a guide member, an image sensor, and a first substrate; and Fig.48 is along Fig.47 A cross-sectional view taken along line XII-XII'.

[0671] When performing image stabilization, the image sensor S can move in the first axis (X axis) direction, and the lens holder 10 can move in the second axis (Y axis) direction. In addition, when performing autofocus, the lens holder 10 can move in the optical axis (Z axis) direction.

[0672] That is, in this exemplary embodiment, when moving in one of the two axial movements required for image stabilization, the image sensor S can move instead of the lens module 1000. Therefore, image stabilization can be performed with a smaller driving force, and the components included in the actuator 5 can be made smaller.

[0673] Reference Fig.47 and Fig.48 , the image sensor S may be electrically connected to the first substrate 91. For example, the image sensor S may be connected to the first substrate 91 through a connection unit 91a. The connection unit 91a may have one side connected to the first substrate 91 and the other side connected to the image sensor S.

[0674] The image sensor S may be movable in one axis direction (eg, a first axis (X axis) direction), and the connection unit 91 a connecting the image sensor S and the first substrate 91 to each other may be flexible.

[0675] For example, the connection unit 91a may be a flexible film on which a conductor is patterned, or may be a plurality of cables. Therefore, when the image sensor S moves, the connection unit 91a may be bent.

[0676] In this exemplary embodiment, the image sensor S may be moved in one axis direction to minimize tension applied to the connection unit 91 a during movement of the image sensor S, thereby ensuring that the actuator is stably driven.

[0677] As described above, the actuator for a camera, the camera module, and the portable electronic device including the camera module according to the exemplary embodiments of the present disclosure may have improved image stabilization performance.

[0678] Although specific examples have been shown and described above, it will be apparent after understanding the present disclosure that various changes in form and detail may be made to these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein should be understood in a descriptive sense only, and not for limiting purposes. The description of the features or aspects in each example should be understood to be applicable to similar features or aspects in other examples. If the described techniques are performed in a different order, and / or if the components in the described systems, architectures, devices, or circuits are combined in different ways and / or replaced or supplemented by other components or their equivalents, appropriate results can still be achieved. Therefore, the scope of the present disclosure is not limited by specific embodiments, but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents should be understood to be included in the present disclosure.

Claims

1. An actuator for a camera, include: case; A bearing portion, disposed in the housing and capable of moving relative to the housing in the optical axis direction; A lens bracket, arranged on the bearing portion; as well as a guide member on which the image sensor is disposed, and the guide member is disposed on the bottom of the housing, wherein the guide member and the image sensor are configured to be movable together in a first direction perpendicular to the optical axis direction; wherein the bearing portion and the lens holder are configured to be movable together in the direction of the optical axis, and Wherein, the lens holder is configured to be movable relative to the bearing portion in a second direction perpendicular to the optical axis direction and the first direction.

2. The actuator for a camera according to claim 1, further comprising a first driving unit that generates a driving force to move the guide member, in, The first driving unit includes a first magnet and a first coil facing the first magnet in the optical axis direction.

3. The actuator for a camera according to claim 2, in, One surface of the first magnet has an N pole and an S pole spaced apart in the first direction, and The first coil faces the N pole and the S pole of the one surface of the first magnet.

4. The actuator for a camera according to claim 2, in, The first magnet includes two magnets spaced apart in the first direction, and The first coil includes two coils spaced apart in the first direction.

5. The actuator for a camera according to claim 2, in, The first magnet is disposed on the guide member, and Wherein, a first yoke unit is arranged on the housing and faces the first magnet in the optical axis direction. 6 . The actuator for a camera according to claim 1 , further comprising a first ball member that rolls in the first direction and is disposed between the guide member and the housing.

7. The actuator for a camera according to claim 1, further comprising a second driving unit generating a driving force to move the lens holder, in, The second driving unit includes a second magnet and a second coil facing the second magnet in the second direction.

8. The actuator for a camera according to claim 7, in, One surface of the second magnet has an N pole or an S pole, and Wherein, the second coil faces the one surface of the second magnet.

9. The actuator for a camera according to claim 7, in, The second magnet includes two magnets spaced apart in the second direction, and The second coil includes two coils spaced apart in the second direction.

10. The actuator for a camera according to claim 7, in, The second magnet is disposed on the lens holder, and Wherein, a second yoke unit is arranged on the bearing portion and faces the second magnet in the optical axis direction. 11 . The actuator for a camera according to claim 1 , further comprising a second ball member that rolls in the second direction and is disposed between the bearing portion and the lens holder.

12. The actuator for a camera according to claim 1, further comprising: include: A third driving unit, comprising a third magnet and a third coil facing the third magnet; as well as The third yoke unit faces the third magnet in the first direction.

13. The actuator for a camera according to claim 1, further comprising a first substrate coupled to the housing and comprising a connection unit, in, One side of the connection unit is connected to the first substrate, and the other side of the connection unit is connected to the image sensor.

14. The actuator for a camera according to claim 1, in, The connection unit includes a flexible film on which a conductor is patterned or a plurality of cables.

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