Camera module

Abstract

The camera module includes: a first module configured to move a lens unit in an optical axis direction; a second module configured to move the image sensor in a direction perpendicular to the optical axis direction; a first ball member supporting movement of the lens unit in the optical axis direction; and a second ball member supporting movement of the image sensor in a direction perpendicular to the optical axis direction, in which at least a portion of the first ball member overlaps the second ball member in the direction perpendicular to the optical axis direction.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2021-0177869, filed on December 13, 2021, and Korean Patent Application No. 10-2022-0133456, filed on October 17, 2022, the entire disclosure of which is incorporated herein by reference for all purposes. Technical Field

[0003] This disclosure relates to a camera module. Background Technology

[0004] Camera modules have become a standard feature in mobile communication terminals such as tablet PCs, laptops, and smartphones.

[0005] The camera module may include actuators with focus adjustment and optical image stabilization (OIS) functions to generate high-resolution images. For example, focus can be adjusted by moving the lens module in the optical axis (Z-axis) direction, and optical image stabilization can be performed by moving the lens module in a direction perpendicular to the optical axis (Z-axis) direction.

[0006] As camera module performance improves, the weight of the lens module may increase, potentially requiring a larger drive unit to move the heavy lens module. However, due to space constraints within mobile devices, camera modules used in mobile devices need to be thin. Therefore, there is a need for a camera module with a compact structure capable of stably controlling a high-performance lens module. Summary of the Invention

[0007] This summary is provided to present, in a simplified form, the selection of concepts further described in the following detailed description. This summary is not intended to identify key or essential features of the claimed subject matter, nor is it intended to help determine the scope of the claimed subject matter.

[0008] In one general aspect, the camera module includes: a lens unit including one or more lenses disposed in the optical axis direction; an image sensor on which light is incident through the lens unit; a first module including a first drive unit configured to move the lens unit in the optical axis direction; and a second module including a second drive unit configured to move the image sensor in a direction perpendicular to the optical axis direction, wherein the first module further includes: a lens holder supporting the lens unit and at least partially overlapping the second module in the first direction perpendicular to the optical axis direction; and a housing in which the lens holder is disposed.

[0009] The lens holder may include: a main body portion in which a lens unit is disposed; and an extension portion that protrudes from the main body portion in the optical axis direction, and a virtual first extension line extending from the end of the extension portion in the optical axis direction in a first direction that may pass through the second module.

[0010] The first driving unit may include: a first driving coil; a first driving magnet facing the first driving coil; and a first position sensor configured to detect the position of the first driving magnet.

[0011] The first driving magnet can be disposed in the extension, and the first driving coil can be fixed to the housing.

[0012] The first module may further include a first ball unit disposed between the housing and the lens holder, and the first ball unit may include: a first ball group comprising a plurality of balls forming a first column parallel to the optical axis; and a second ball group comprising a plurality of balls forming a second column parallel to the optical axis and spaced apart from the first column.

[0013] The number of balls in the first group can differ from the number of balls in the second group.

[0014] The first group of balls may include a plurality of first main balls and one or more first sub-balls disposed between the plurality of first main balls, and the diameter of each of the one or more first sub-balls may be smaller than the diameter of each of the plurality of first main balls.

[0015] The second set of balls may include multiple second cue balls and one or more second daughter balls, and the interval between the two first cue balls that are furthest apart among the multiple first cue balls may be greater than the interval between the two second cue balls that are furthest apart among the multiple second cue balls.

[0016] The first module may further include a first yoke spaced apart from the first driving magnet in a first direction, and the point of application of the magnetic force applied to the first yoke by the first driving magnet may be closer to the first ball group than to the second ball group.

[0017] One or both of the housing and the lens holder may include: a first guide groove in which a first ball assembly is disposed; and a second guide groove in which a second ball assembly is disposed; and the length of the first guide groove in the optical axis direction may be greater than or equal to the length of the second guide groove in the optical axis direction.

[0018] The camera module may also include a reinforcing member disposed in one or both of the first guide groove and the second guide groove, wherein the reinforcing member may include a material with a stiffness greater than that of the material forming at least a portion of the lens holder.

[0019] The second module may include: a movable frame configured to move together with the image sensor in a direction perpendicular to the optical axis; a fixed frame, wherein the movable frame is disposed within the fixed frame; and a second ball unit comprising a plurality of balls disposed between the movable frame and the fixed frame.

[0020] The first extension line may pass through at least one of the multiple balls in the second ball unit.

[0021] The housing may include a first receiving portion having a space therein for accommodating the extension, and the fixing frame may include: a seat portion on which the housing is disposed and the seat portion includes an opening through which light passes; a second receiving portion providing a receiving space in which the first receiving portion is accommodated; and a step portion disposed between the seat portion and the second receiving portion.

[0022] At least a portion of the first receiving part may face the step portion in the first direction.

[0023] At least a portion of the extension may face the step portion in a direction perpendicular to the optical axis, and the first receiving portion is inserted between the at least a portion of the extension and the step portion.

[0024] The second module may further include a sensor substrate, which includes: a movable portion connected to a movable frame and supporting an image sensor; a fixed portion connected to a fixed frame; and a connecting portion connecting the movable portion and the fixed portion to each other.

[0025] The second drive unit may include: a second drive coil disposed on a movable frame or a fixed frame; a second drive magnet facing the second drive coil; and a second position sensor configured to detect the position of the second drive magnet.

[0026] The second drive unit may further include: a third drive coil, which is arranged at a right angle to the second drive coil; a third drive magnet, which faces the third drive coil; and a third position sensor configured to detect the position of the third drive magnet.

[0027] In another general aspect, the camera module includes: a lens unit including one or more lenses disposed in the optical axis direction; a lens holder supporting the lens unit and configured to be movable in the optical axis direction; a first housing having an internal space in which the lens holder is disposed; a second housing coupled to the first housing and housing an optical component on which light from the lens unit is incident; and a plurality of spheres disposed between the lens holder and the first housing and forming a first column and a second column spaced apart from each other and parallel to the optical axis direction, wherein the spheres forming the first column and the spheres forming the second column are asymmetrically arranged, and at least a portion of the first housing faces the second housing in a direction perpendicular to the optical axis direction.

[0028] The balls forming the first column may include a plurality of first main balls and one or more first sub-balls disposed between the plurality of first main balls, and the diameter of each of the plurality of first main balls may be greater than the diameter of each of the one or more first sub-balls.

[0029] The spheres forming the second column may include one or more second main spheres and one or more second sub-spheres. Two of the first main spheres may be positioned at the outermost position of the first column in the optical direction. The diameter of each of the one or more second sub-spheres is smaller than the diameter of each of the one or more second main spheres. One of the one or more second sub-spheres may be positioned on one side of the outermost position of the second column in the optical direction.

[0030] The number of balls forming the first column can be different from the number of balls forming the second column.

[0031] The camera module may also include a housing covering the upper part of the first housing, wherein the housing may include two protrusions projecting toward the first column and the second column, respectively.

[0032] The camera module may further include: a first drive unit configured to move a lens support in the optical axis direction; and a second drive unit configured to move an optical component in a direction perpendicular to the optical axis direction, wherein the first drive unit may be disposed in the internal space of the first housing, and the second drive unit may be disposed outside the first housing.

[0033] The lens holder may include: a main body portion in which a lens unit is disposed; and an extension portion that protrudes from the main body portion in the optical axis direction; and a first housing portion that may face a second housing portion in a direction perpendicular to the optical axis direction, and may include a first receiving portion having a space therein for receiving the extension portion.

[0034] The first receiving portion may protrude from the lower surface of the first housing in the optical axis direction.

[0035] The second housing may include: a base, on which the first housing is disposed, and the base includes an opening through which light passes; a second receiving portion providing a receiving space therein for receiving the first receiving portion; and a step portion extending in the direction of the optical axis and connecting the base to the second receiving portion.

[0036] The camera module may also include a movable frame configured to move relative to the second housing together with the optical components, wherein at least a portion of the movable frame faces the step portion in a direction perpendicular to the optical axis.

[0037] Other features and aspects will be apparent from the following detailed description, the accompanying drawings, and the claims. Attached Figure Description

[0038] Figure 1 This is a 3D view of the camera module.

[0039] Figure 2 It is shown that it includes Figure 1 A reference diagram showing the combination of the first and second modules in the camera module.

[0040] Figure 3 It's viewed from one perspective. Figure 2 The exploded 3D view of the first module.

[0041] Figure 4 This is a three-dimensional exploded view of the first module from another perspective.

[0042] Figure 5 It is a side view of the lens holder and housing included in the first module.

[0043] Figure 6 It is along Figure 2 A sectional view taken from line VI-VI'.

[0044] Figure 7 It is along Figure 2 Example of a sectional view taken by line VII-VII'.

[0045] Figure 8 It is along Figure 2 Another example of a sectional view taken by line VIII-VIII'.

[0046] Figure 9 It is along Figure 2 Another example of a sectional view taken by the line IX-IX'.

[0047] Figure 10 This is a diagram showing an example of the first driving magnet of the first module being biased to one side of the extension of the lens bracket of the first module.

[0048] Figure 11 yes Figure 2 The exploded 3D view of the second module.

[0049] Figure 12 It is a three-dimensional view of the fixed frame included in the second module.

[0050] Figure 13 It is an exploded bottom perspective view of the fixed frame included in the second module.

[0051] Figure 14 It is a perspective view showing the wiring pattern, support pads, and yoke units embedded in the fixed frame.

[0052] Figure 15This is an exploded 3D view of the moving frame of the second module.

[0053] Figure 16 This is a plan view of the sensor substrate of the second module.

[0054] Figure 17 This is an exemplary layout diagram of the second drive unit of the second module.

[0055] Figure 18 This is an exploded perspective view of the second module according to other exemplary embodiments.

[0056] Figure 19 It is along Figure 1 A cross-sectional view taken by the line XIX-XIX'.

[0057] Figure 20 yes Figure 19 An enlarged view of the dashed section B.

[0058] Throughout all the accompanying drawings and detailed descriptions, the same reference numerals denote the same elements. The drawings may not be drawn to scale, and for clarity, illustration, and convenience, the relative dimensions, scale, and depiction of elements in the drawings may be exaggerated. Detailed Implementation

[0059] The following detailed description is provided to aid the reader in fully understanding the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the sequences of operations described herein are merely examples and are not limited to those set forth herein; rather, changes may be apparent after understanding the disclosure of this application, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0060] The features described herein may be implemented in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein are provided only to illustrate some of the many possible ways in which the methods, apparatuses, and / or systems described herein will be apparent upon understanding the disclosure of this application.

[0061] Throughout the specification, when an element such as a layer, region, or substrate is described as being “on”, “connected to”, or “attached to” another element, it can be directly “on”, directly “connected to”, or “attached to” another element, or one or more other elements may exist between them. Conversely, when an element is described as being “directly” “on”, “directly connected to”, or “directly attached to” another element, no other elements can exist between them.

[0062] As used herein, the term “and / or” includes any one of the associated listed items and any combination of any two or more.

[0063] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Thus, without departing from the teachings of the examples described herein, the first component, first assembly, first region, first layer, or first part mentioned in the examples may also be referred to as a second component, second assembly, second region, second layer, or second part.

[0064] Spatially relative terms such as “above,” “above,” “below,” and “below” may be used herein to describe the relationship between one element and another, as shown in the accompanying drawings. In addition to the orientations shown in the drawings, these spatially relative terms are intended to also include different orientations of the device in use or operation. For example, if the device in the drawings is flipped, an element described as “above” or “above” another element will be “below” or “below” another element. Thus, the term “above” includes both above and below orientations, depending on the spatial orientation of the device. 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 will be interpreted accordingly.

[0065] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. The articles “a,” “an,” and “the” are intended to include plural forms as well, unless the context clearly indicates otherwise. The terms “comprising,” “including,” and “having” indicate the presence of the stated 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.

[0066] Figure 1 This is a 3D view of camera module 1. Figure 2 It is shown that it includes Figure 1 A reference diagram showing the combination of the first module 10 and the second module 20 in the camera module 1.

[0067] According to an exemplary embodiment, the camera module 1 can be installed in a mobile electronic device. The mobile electronic device can be a portable electronic device such as a mobile communication terminal, a smartphone, or a tablet personal computer (PC).

[0068] refer to Figure 1 and Figure 2 According to an exemplary embodiment, the camera module 1 may include a first module 10 capable of moving the lens unit 30. Furthermore, the camera module 1 may also include a second module 20 capable of moving the image sensor S. For example, the first module 10 may be an actuator module for focus adjustment, while the second module 20 may be an actuator module for optical image stabilization (OIS).

[0069] Lens unit 30 includes at least one lens L and lens barrel 31 (see Figure 3 and Figure 4 At least one lens L is disposed within the lens barrel 31. When multiple lenses L are provided, the multiple lenses L are mounted within the lens barrel 31 along the optical axis O.

[0070] In an exemplary embodiment, the lens unit 30 can be moved in the optical axis direction (Z-axis direction) during autofocus adjustment (AF). For this purpose, the camera module 1 according to the exemplary embodiment includes a first module 10 capable of moving the lens unit 30.

[0071] The lens unit 30 can be moved by the first module 10 in the optical axis direction (Z-axis direction) to adjust the focus. Alternatively, the lens unit 30 can be fixed so that it does not move when performing optical image stabilization.

[0072] Optical components that allow light to pass through the lens unit 30 to be incident on it can be located behind the first module 10. For example, the camera module 1 may include the lens unit 30, the first module 10, and optical components located outside the first module 10.

[0073] The optical component may be an additional lens module, a reflection module, or an image sensor S, or an optical module that combines these components. For example, the optical component located behind the first module 10 may be an image sensor S that is movable relative to the lens unit 30.

[0074] According to an exemplary embodiment, the camera module 1 can perform optical image stabilization by moving the image sensor S instead of the lens unit 30. Since the relatively lightweight image sensor S is moved, it can be moved with a smaller driving force. Therefore, optical image stabilization can be performed more accurately.

[0075] Therefore, according to an exemplary embodiment, camera module 1 includes a second module 20.

[0076] Through the second module 20, the image sensor S can move in a direction perpendicular to the optical axis O or rotate around the optical axis O, which serves as the rotation axis, to compensate for jitter. That is, through the second module 20, the image sensor S can move in a direction perpendicular to the direction facing the imaging surface of the image sensor S, or rotate around the optical axis O, which serves as the rotation axis.

[0077] In this specification, the direction facing the imaging surface of the image sensor S can be referred to as the optical axis direction (Z-axis direction). That is, the image sensor S can move in a direction perpendicular to the optical axis direction (Z-axis direction).

[0078] In the accompanying drawings of this application, the movement of the image sensor S in the direction parallel to the imaging plane can be understood as the movement of the image sensor S in the direction perpendicular to the optical axis (Z-axis direction).

[0079] Furthermore, the movement of the image sensor S in the first direction (Y-axis direction) or the second direction (X-axis direction) can be understood as the movement of the image sensor S in a direction perpendicular to the optical axis (Z-axis direction).

[0080] Furthermore, for convenience, it is described that the image sensor S can rotate about the optical axis O, which serves as the axis of rotation. However, when the image sensor S rotates, the axis of rotation may not be aligned with the optical axis O. For example, the image sensor S can rotate about any axis that serves as the axis of rotation and is perpendicular to the direction facing the imaging surface of the image sensor S, that is, about any axis that serves as the axis of rotation and is parallel to the optical axis O.

[0081] Furthermore, the first direction (Y direction) and the second direction (X-axis direction) are examples of two directions that are perpendicular to the optical axis (Z-axis direction) and intersect each other. In this specification, the first direction (Y-axis direction) and the second direction (X-axis direction) can be understood as two directions that are perpendicular to the optical axis O and intersect each other.

[0082] Figure 3 It's viewed from one perspective. Figure 2 The exploded 3D view of the first module. Figure 4 This is a three-dimensional exploded view of the first module from another perspective. Figure 5 It is a side view of the lens holder and housing included in the first module. Figure 6 It is along Figure 2 The sectional view taken by line VI-VI'. Because... Figures 3 to 6 The lens unit 30 and the first module 10 in the above correspond to the above. Figure 1 and Figure 2 The lens unit 30 and the first module 10 are included, so redundant descriptions of them can be omitted.

[0083] The first module 10 includes a lens holder 200 supporting the lens barrel 31, a housing 100, and a first drive unit 300, and may also include a housing 500.

[0084] The lens holder 200 may have a hollow portion formed to extend through the optical axis (e.g., the Z-axis direction). The lens barrel 31 can be inserted into the hollow portion and fixed relative to the lens holder 200. Therefore, the lens barrel 31 and the lens holder 200 can move together in the optical axis O direction.

[0085] The housing 100 has an internal space in which the lens holder 200 can be accommodated, and the housing 100 may have an open upper part and an open lower part.

[0086] For example, the housing 100 can be configured such that the upper part is completely open, but the lower surface 110 is partially open in the optical axis direction, and light passing through the lens unit 30 can be emitted to the outside of the housing 100 through the open area of ​​the lower surface 110.

[0087] The outer casing 500 can be attached to the housing 100 to cover the upper part of the housing 100 and protect the internal components of the first module 10.

[0088] The housing 500 may be provided with a protrusion 510 that protrudes toward the first ball unit 400, which will be described later. The protrusion 510 may serve as a stop and a buffer member for adjusting the range of movement of the first ball unit 400.

[0089] The first drive unit 300 can generate a driving force in the optical axis direction (Z-axis direction) to move the lens support 200 in the optical axis direction (Z-axis direction).

[0090] The first driving unit 300 includes a first driving magnet 320 and a first driving coil 310 that interact electromagnetically with each other to generate a driving force. The first driving magnet 320 and the first driving coil 310 may be arranged to face each other in a first direction (Y-axis direction) perpendicular to the optical axis (Z-axis direction).

[0091] The first driving magnet 320 is disposed on the lens holder 200. For example, the first driving magnet 320 may be disposed on a side surface of the lens holder 200.

[0092] One side surface of the lens holder 200 may protrude further in the optical axis direction (Z-axis direction) than another part of the lens holder 200. For example, the lens holder 200 may include a main body portion 210 in which a lens barrel 31 is disposed and an extension 220 protruding from the main body portion 210 in the optical axis direction (Z-axis direction).

[0093] The first driving magnet 320 can be mounted on the extension 220. Therefore, the height of the first module 10 can be reduced by decreasing the height of other parts of the lens bracket 200, while ensuring sufficient mounting space for the first driving unit 300 to ensure driving force.

[0094] A rear yoke (not shown) may be disposed between the lens holder 200 and the first drive magnet 320. The rear yoke can improve the driving force by preventing magnetic flux leakage from the first drive magnet 320.

[0095] The first driving magnet 320 can be magnetized such that a surface (e.g., the surface facing the first driving coil 310) has an N pole and a S pole. For example, the N pole, the neutral region, and the S pole can be arranged sequentially in the optical axis direction (Z-axis direction) on a surface of the first driving magnet 320 facing the first driving coil 310.

[0096] Furthermore, another surface of the first driving magnet 320 (e.g., a surface opposite to the first surface) can be magnetized to have a polarity opposite to that of the first surface. For example, an S pole, a neutral region, and an N pole can be sequentially arranged on the other surface of the first driving magnet 320 in the optical axis direction (Z-axis direction).

[0097] The first driving coil 310 is configured to face the first driving magnet 320. For example, the first driving coil 310 may be configured to face the first driving magnet 320 in a first direction (Y-axis direction) perpendicular to the optical axis O.

[0098] The first driving coil 310 is arranged on the substrate 350, and the substrate 350 can be mounted on the housing 100, such that the first driving magnet 320 and the first driving coil 310 face each other in a first direction (Y-axis direction) perpendicular to the optical axis O.

[0099] The first driving magnet 320 is a movable member mounted on the lens holder 200 and moving together with the lens holder 200 in the optical axis direction (Z-axis direction), and the first driving coil 310 can be a fixed member fixed to the substrate 350.

[0100] When power is supplied to the first drive coil 310, the lens holder 200 moves in the optical axis direction (Z-axis direction) by the electromagnetic force acting between the first drive magnet 320 and the first drive coil 310. When the lens holder 200 moves, the lens tube 31 disposed in the lens holder 200 can also move in the optical axis direction (Z-axis direction).

[0101] The first drive unit 300 may further include a first yoke unit 340, which generates a supporting force for supporting the lens holder 200 within the housing 100. For example, the first drive unit 300 may also include a first yoke unit 340 facing the first drive magnet 320 in a first direction (Y-axis direction), with a first drive coil 310 inserted between them. However, a component other than the first drive coil 310, such as a substrate 350, may also be disposed between the first drive magnet 320 and the first yoke unit 340.

[0102] The first yoke unit 340 may be disposed at a position facing the first driving magnet 320. For example, the first driving coil 310 may be disposed on one surface of the substrate 350, and the first yoke unit 340 may be disposed on the other surface of the substrate 350.

[0103] The first yoke unit 340 may include a magnetic material, to which the magnetic force of the first driving magnet 320 is applied. For example, the first yoke unit 340 may include a metallic material, and a magnetic attraction may be generated between the first driving magnet 320 and the first yoke unit 340.

[0104] Due to the magnetic attraction generated between the first yoke unit 340 and the first driving magnet 320, the lens holder 200 can be supported on the housing 100 in the first direction (Y-axis direction).

[0105] The first yoke unit 340 can also be used to focus the magnetic lines of force generated by the first driving magnet 320 so that they pass through the first driving coil 310 in a concentrated manner.

[0106] However, the arrangement of the first drive unit 300 according to the exemplary embodiment is not limited to the above description. For example, the first drive magnet 320 included in the first drive unit 300 may be disposed on the housing 100, and the first drive coil 310 may be disposed on the extension 220 of the lens holder 200. In this case, the first yoke unit 340 may be disposed between the first drive coil 310 and the lens holder 200.

[0107] Because a portion of the lens holder 200 protrudes further in the optical axis direction (Z-axis direction), one side surface of the housing 100 may have a shape that protrudes further in the optical axis direction (Z-axis direction) than other portions of the housing 100. For example, the housing 100 may include a lower surface 110 facing the main body portion 210 of the lens holder 200 in the optical axis direction (Z-axis direction) and a first receiving portion 120 that protrudes further in the optical axis direction (Z-axis direction) than the lower surface 110.

[0108] The receiving space RS can be formed in the first receiving portion 120, and the extension 220 of the lens holder 200 can be received in the receiving space RS.

[0109] Since the first receiving portion 120 protrudes downwards more than the lower surface 110 of the housing 100 in the optical axis direction (Z-axis direction), the lower surface 110 and the first receiving portion 120 can have a stepped structure. Therefore, the height of the first module 10 can be reduced by reducing the height of other parts of the housing 100, while ensuring sufficient mounting space for the first drive unit 300 to ensure driving force. Here, "protruding downwards" can refer to protruding in the direction of light travel through the lens unit 30.

[0110] The first ball unit 400 can be disposed between the lens holder 200 and the housing 100. For example, the first ball unit 400 can be disposed in guide grooves 231 and 232 formed in the extension 220 of the lens holder 200 and guide grooves 131 and 132 formed in the housing 100. The first ball unit 400 includes a plurality of balls disposed in the optical axis direction (Z-axis direction). When the lens holder 200 moves in the optical axis direction (Z-axis direction), the plurality of balls can roll or rotate in place in the optical axis direction (Z-axis direction).

[0111] The first ball unit 400 can be kept in contact with the lens holder 200 and the housing 100 by the magnetic attraction generated between the first driving magnet 320 and the first yoke unit 340.

[0112] Guide grooves 131, 132, 231, and 232 can each be formed in the facing surfaces of the lens holder 200 and the housing 100. For example, the extension 220 of the lens holder 200 can be provided with a first guide groove 231 and a second guide groove 232, and the housing 100 can be provided with a third guide groove 131 and a fourth guide groove 132. The first guide groove 231 and the second guide groove 232 can be configured to face the third guide groove 131 and the fourth guide groove 132, respectively.

[0113] Guide grooves 131, 132, 231, and 232 may have a groove shape extending in the optical axis direction (Z-axis direction). The first ball unit 400 may be disposed between the first guide groove 231 and the third guide groove 131, and between the second guide groove 232 and the fourth guide groove 132.

[0114] The first spherical units 400 can be arranged to form multiple columns extending in a direction parallel to the optical axis (Z-axis direction). For example, some spheres in the first spherical units 400 can be arranged in a direction parallel to the optical axis (Z-axis direction) to form a first spherical group BG1. The spheres in the first spherical group BG1 can form a first column. Furthermore, some spheres in the first spherical units 400 can be spaced apart from the first spherical group BG1 and arranged in a direction parallel to the optical axis (Z-axis direction) to form a second spherical group BG2. The spheres in the second spherical group BG2 can form a second column.

[0115] In sphere groups BG1 and BG2, which form two parallel columns, the spheres forming the first column and the spheres forming the second column can be arranged asymmetrically. (See below for reference.) Figures 7 to 9 Describe this ball arrangement in detail.

[0116] Continue to refer to Figure 3 and Figure 4 Each of the ball groups BG1 and BG2 can be placed in a different guide groove. For example, the first ball group BG1 can be placed in the first guide groove 231 and the third guide groove 131, and the second ball group BG2 can be placed in the second guide groove 232 and the fourth guide groove 132.

[0117] When an impact is applied to the first module 10, there is a risk that the shape of the portion in contact with the first ball unit 400 in the guide grooves 131, 132, 231, and 232 will deform (a so-called dent). For example, an external impact may concentrate on the narrow contact surface between the first ball unit 400 and the guide grooves 131, 132, 231, and 232, thus posing a risk of denting of the guide grooves 131, 132, 231, and 232. When denting occurs, there is a risk of a change in the relative position between the lens holder 200 and the housing 100, which may make it difficult to precisely control the position of the lens holder 200.

[0118] To prevent this dent, the first module 10 may also include a reinforcing member RM disposed in at least one of the guide grooves 131, 132, 231 and 232.

[0119] The reinforcing member RM may have a shape corresponding to the shape of the guide grooves 131, 132, 231 and 232. For example, when the guide grooves 131, 132, 231 and 232 are V-shaped grooves extending in the optical axis direction (Z-axis direction), the reinforcing member RM may be configured as a V-shaped member that mates with the inclined surfaces of the guide grooves 131, 132, 231 and 232.

[0120] The reinforcing member RM can be made of a material with higher stiffness than the material constituting at least a portion of the housing 100 or the lens holder 200. For example, when the guide grooves 131, 132, 231 and 232 of the housing 100 or the lens holder 200 are made of plastic material, the reinforcing member RM is made of a material with higher stiffness than plastic (e.g., a non-conductive metallic material).

[0121] The reinforcing member RM can be a separate component and attached to the guide grooves 131, 132, 231, and 232. For example, the reinforcing member RM can be adhered to the guide grooves 131, 132, 231, and 232 using an adhesive. Alternatively, the guide grooves 131, 132, 231, and 232, as well as the reinforcing member RM, can be integrally formed by inserting an injection-molded reinforcing member RM during the manufacturing process of the housing 100 or the lens holder 200.

[0122] When the reinforcing member RM is placed in the guide grooves 131, 132, 231 and 232, the impact resistance of the guide grooves 131, 132, 231 and 232 can be increased.

[0123] The first module 10 can detect the position of the lens holder 200 in the optical axis direction (Z-axis direction). For this purpose, a first position sensor 330 can be provided. The first position sensor 330 can be disposed on the substrate 350 facing the first driving magnet 320. For example, the first position sensor 330 can be a Hall sensor.

[0124] In the following text, reference will be made to Figures 7 to 10 The arrangement structure of the first drive unit and the first ball unit in the first module 10 is described in detail.

[0125] Figure 7 It is along Figure 2 Example of a sectional view taken by line VII-VII'. Figure 8 It is along Figure 2 Another example of a sectional view taken by line VIII-VIII'. Figure 9 It is along Figure 2 Another example of a sectional view taken by the line IX-IX'. Figure 10 This is a diagram showing an example of the first driving magnet of the first module being biased to one side of the extension of the lens bracket of the first module.

[0126] Because in Figure 7 and Figure 8 The first module 10 and its components described in the above reference correspond to the above reference. Figures 1 to 6 The first module 10 and its components are described, therefore redundant descriptions of them will be omitted.

[0127] The first module 10 may include a first ball unit 400, which includes a plurality of balls disposed between the lens holder 200 and the housing 100.

[0128] In the first module 10 according to an exemplary embodiment, some of the balls in the first ball unit 400 may have a smaller size (e.g., diameter) than the remaining balls in the first ball unit 400. In this case, the larger ball may intentionally come into contact with the lens holder 200 and the housing 100.

[0129] For example, refer to Figure 7 Some of the balls forming the first ball group BG1 may be relatively large balls BG1A, while others may be relatively small balls BG1B. In the following description, the ball with the relatively large size is defined as the "main ball," and the ball with the relatively small size is defined as the "child ball." Similarly, some of the balls forming the second ball group BG2 may be relatively large balls BG2A, while others may be relatively small balls BG2B. In the following description, the ball with the relatively large size is defined as the "main ball," and the ball with the relatively small size is defined as the "child ball."

[0130] Between the lens holder 200 and the housing 100, large-diameter main balls BG1A and BG2A can contact the lens holder 200, while small-diameter sub-balls BG1B and BG2B can remain in contact with the lens holder 200. That is, the lens holder 200 can contact the main balls BG1A and BG2A and be supported on the inner wall of the housing 100. In this configuration, the sub-balls BG1B and BG2B maintain the spacing between the main balls BG1A and BG2A, keep the main balls BG1A and BG2A in place, and help support the lens holder 200 on the housing 100.

[0131] The first ball group BG1 may include multiple first main balls BG1A and first sub-balls BG1B disposed between them.

[0132] The second ball group BG2 may include one or more second main balls BG2A and one or more second sub-balls BG2B aligned in a straight line with the second main balls BG2A along the optical axis.

[0133] refer to Figure 7 The interval between the two first cue balls BG1A in the first ball group BG1 can be greater than the interval between the two second cue balls BG2A in the second ball group BG2.

[0134] For example, in the first ball group BG1 forming the first column, two first main balls BG1A can be respectively placed at the two outermost positions of the first column. Furthermore, in the second ball group BG2 forming the second column, a second sub-ball BG2B can be placed at one outermost position of the second column, a second main ball BG2A can be placed at the other outermost position of the second column, and another second main ball BG2A can be placed between them.

[0135] The lens holder 200 can be supported on the housing 100 by contacting the main balls BG1A and BG2A. In this case, the line connecting the centers of the main balls BG1A and BG2A supporting the lens holder 200 (defined as the contact point) defines a virtual region with a predetermined area. This virtual region is defined as the "support region". For example, in Figure 7 In the middle, the support area has a trapezoidal shape, wherein the line connecting the center of the first main ball BG1A of the first ball group BG1 is longer than the line connecting the center of the second main ball BG2A of the second ball group BG2.

[0136] In an exemplary embodiment, the point of magnetic attraction acting between the first driving magnet 320 and the first yoke unit 340 (hereinafter referred to as the "support center point") may be located within the support area.

[0137] Since the support center point is located within the support area, the first driving magnet 320 and the lens holder 200 can be stably supported on the inner wall of the housing 100 by the main balls BG1A and BG2A. Therefore, the lens holder 200 can move as parallel as possible in the optical axis direction (Z-axis direction) without tilting relative to the housing 100.

[0138] When the lens holder 200 moves along the optical axis (Z-axis), the first driving magnet 320 also moves along the optical axis (Z-axis), which may pose a risk that the support center point may deviate from the support area. To prevent this, the support center point can be offset to one side of the support area.

[0139] For example, refer to Figure 7 The first yoke unit 340 may further include a protrusion 341 projecting toward the first driving magnet 320. Similar to other parts of the first yoke unit 340, the protrusion 341 may be made of a magnetic material on which the magnetic force of the first driving magnet 320 can act. For example, the protrusion 341 may be an integral part of the first yoke unit 340. Because the first yoke unit 340 additionally includes the protrusion 341, the support center point of the magnetic attraction acting between the first driving magnet 320 and the first yoke unit 340 may be biased toward the side of the support region where the protrusion 341 is located.

[0140] In an exemplary embodiment, the protrusion 341 of the first yoke unit 340 may be configured to be closer to the first ball group BG1 than the second ball group BG2. (See reference...) Figure 7 The first main ball BG1A of the first ball group BG1 can be arranged at a relatively wider interval than the second main ball BG2A of the second ball group BG2. In this case, the support area can have a trapezoidal shape, wherein the side of the trapezoidal shape connecting the center of the first main ball BG1A of the first ball group BG1 is longer than the side of the trapezoidal shape connecting the center of the second main ball BG2A of the second ball group BG2.

[0141] Because the protrusion 341 of the first yoke unit 340 positions the support center point closer to the long side of the center of the first main ball BG1A connecting the first ball group BG1 in a trapezoidal shape, the support center point will not deviate from the trapezoidal shape even if it moves a long distance. Therefore, when the lens support 200 moves a long distance in the optical axis direction, the lens support 200 does not tilt relative to the housing 100 and can move as parallel as possible in the optical axis direction (Z-axis direction).

[0142] In the first module 10, the length of the first guide groove 231, which serves as the main guide, may differ from the length of the second guide groove 232, which serves as the auxiliary guide. Reference will be made below. Figure 9 and Figure 10 An example of a lens holder 200 with guide slots of different lengths is described.

[0143] Figure 7 and Figure 8 The difference lies in the positions of the first position sensor 330, the protrusion 341 of the first yoke unit 340, the first main ball BG1A, the first sub-ball BG1B, the second main ball BG2A, and the second sub-ball BG2B.

[0144] Figure 9 It is along Figure 2 Another example of a sectional view taken by the line IX-IX'. Figure 10 This is a diagram showing an example of the first driving magnet of the first module being biased to one side of the extension of the lens bracket of the first module.

[0145] In an exemplary embodiment, the lengths of the first guide groove 231 and the second guide groove 232 may be different from each other. For example, refer to Figure 9 and Figure 10 The length of the first guide groove 231 in the optical axis direction (Z-axis direction) can be longer than the length of the second guide groove 232 in the optical axis direction (Z-axis direction).

[0146] The first guide groove 231 may protrude below the lower surface of the main body portion 210 of the lens holder 200 in the optical axis direction (Z-axis direction). For example, a portion of the extension 220 of the lens holder 200 may protrude below other portions of the lens holder 200 in the optical axis direction (e.g., negative Z-axis direction), and the first guide groove 231 may be formed in the protrusion.

[0147] For example, the portion of the extension 220 of the lens holder 200 in which the first guide groove 231 is formed may protrude further in the negative optical axis direction (negative Z-axis direction) than the portion of the extension 220 of the second guide groove 232 in which the second guide groove 232 is formed. Therefore, the length of the first guide groove 231 may be longer than the length of the second guide groove 232.

[0148] Furthermore, the length of the third guide groove 131 facing the first guide groove 231 can be longer than the length of the fourth guide groove 132 facing the second guide groove 232.

[0149] The length of the second guide groove 232 in the optical axis direction (Z-axis direction) can be approximately the same as the length of the main body portion 210 of the lens holder 200 in the optical axis direction (Z-axis direction). However, the length of the second guide groove 232 in the optical axis direction (Z-axis direction) is not limited to this. For example, the length of the second guide groove 232 in the optical axis direction (Z-axis direction) can be longer than the length of the main body portion 210 in the optical axis direction (Z-axis direction), and shorter than the length of the first guide groove 231 in the optical axis direction (Z-axis direction).

[0150] In an exemplary embodiment, the number of balls in the first ball group BG1 disposed in the first guide groove 231 and the number of balls in the second ball group BG2 disposed in the second guide groove 232 may be different from each other.

[0151] For example, refer to Figure 9The first ball group BG1 may include three balls BG1A and BG1B, and the second ball group BG2 may include two balls BG2A. The two balls BG2A in the second ball group BG2 may have the same diameter. For example, both balls BG2A in the second ball group BG2 may have a first diameter. In the first ball group BG1, the two balls BG1A positioned at the outermost points along the optical axis (Z-axis) may have the same diameter as each other, and the diameter of the ball BG1B positioned between them may be smaller than the diameter of each of the two balls BG2A positioned at the outermost points along the optical axis (Z-axis). For example, in the first ball group BG1, the two balls BG1A positioned at the outermost points along the optical axis (Z-axis) may have a second diameter, and the ball BG1B positioned between them may have a third diameter, wherein the second diameter may be larger than the third diameter. Furthermore, the first diameter and the second diameter may be the same as each other. The concept of the same diameter can include not only physically identical diameters but also manufacturing tolerances.

[0152] With the arrangement of the balls as described above, even though the second guide groove 232 is shorter than the first guide groove 231, a support area A of sufficient width can be ensured. Therefore, the lens holder 200 can be made thinner and lighter.

[0153] Since the lens holder 200 and the first driving magnet 320 move in the optical axis direction (Z-axis direction), the support center point CP may deviate from the support area A, so there may be a risk that the lens holder 200 may tilt.

[0154] To prevent this, the support center point CP of the lens holder 200 can be positioned closer to the first guide groove 231, which has a relatively longer length than the second guide groove 232.

[0155] For example, refer to Figure 9 The protrusion 341 is additionally included in the first yoke unit 340, and the support center point CP formed by the first drive magnet 320 and the first yoke unit 340 can be biased toward the side where the protrusion 341 is provided. Therefore, the support center point CP can be positioned closer to the first guide groove 231 than to the second guide groove 232.

[0156] Alternatively, regardless of the structure of the first yoke unit 340, by changing the position of the first driving magnet 320, the support center point CP can be positioned closer to the first guide groove 231 instead of the second guide groove 232.

[0157] For example, such as Figure 10 As shown, relative to the center 201 of one side of the lens holder 200, the first drive magnet 320 can be configured to be biased to one side in the longitudinal direction (e.g., the X-axis direction).

[0158] The center 201 of one side of the lens holder 200 and the center 321 of the first driving magnet 320 can be separated from each other. The eccentric direction of the first driving magnet 320 can be towards the first guide groove 231. That is, the first driving magnet 320 can be positioned closer to the first guide groove 231 than to the second guide groove 232.

[0159] Since the support region A can be formed to have a longer length in the optical axis direction (Z-axis direction) as it gets closer to the first guide groove 231, the first driving magnet 320 can be set closer to the first guide groove 231, so that the support center point CP can be more stably positioned in the support region A.

[0160] Reference Figure 9 and Figure 10 In the first module of the description, it should be noted that all features other than those mentioned above can be applied to the reference. Figure 7 and Figure 8 The features of the first module.

[0161] In the following text, reference will be made to Figures 11 to 17 A detailed description is provided for the second module 20 included in the camera module.

[0162] Figure 11 yes Figure 2 The exploded 3D view of the second module. Figure 12 It is a three-dimensional view of the fixed frame included in the second module. Figure 13 It is an exploded bottom perspective view of the fixed frame included in the second module. Figure 14 It is a perspective view showing the wiring pattern, support pads, and yoke units embedded in the fixed frame. Figure 15 It is an exploded 3D view of the moving frame included in the second module. Figure 16 This is a plan view of the sensor substrate included in the second module. Figure 17 This is an exemplary layout diagram of the second drive unit included in the second module.

[0163] because Figures 11 to 17 The camera module 1 shown includes the above reference. Figures 1 to 10 All features of the camera module 1 are described herein, therefore redundant descriptions of them can be omitted.

[0164] The second module 20 may include an image sensor S, through which... Figure 2 The light from the lens unit 30 is incident on the image sensor S. The lens unit 30 is composed of... Figures 2 to 10 The first module 10 provides support. The second module 20 can perform optical image stabilization by moving the image sensor S in a direction different from the optical axis direction (e.g., the Z-axis direction).

[0165] The second module 20 may include a fixed frame 1000, a movable frame 2000, a second drive unit 3000, and a sensor substrate 4000, and may also include a base 5000.

[0166] The fixed frame 1000 can be connected to the first module 10. For example, the fixed frame 1000 can be connected to the housing 100 of the first module 10. The housing 100 of the first module 10 can be positioned and connected to the upper surface of the fixed frame 1000.

[0167] Since the extension 220 of the lens holder 200 and the first receiving portion 120 of the housing 100 protrude in the optical axis direction (Z-axis direction), a gap space can be provided in the fixing frame 1000 to ensure mounting space for the extension 220 and the first receiving portion 120.

[0168] For example, such as Figure 11 and Figure 12 As shown, the second receiving portion 1110 can be disposed on one side of the fixed frame 1000 to provide a receiving space, and the first receiving portion 120 of the housing 100 can be disposed in the receiving space.

[0169] The second receiving portion 1110 can be positioned below other portions of the fixing frame 1000 in the optical axis direction (Z-axis direction). For example, the second receiving portion 1110 can be located below the seat portion 1210 in the optical axis direction, wherein the lower surface 110 of the housing 100 is disposed on the seat portion 1210 in the fixing frame 1000. That is, the distance in the optical axis direction between the second receiving portion 1110 and the base 5000 can be shorter than the distance in the optical axis direction between the seat portion 1210 and the base 5000. According to this structure, the step portion 1120 can be formed between the second receiving portion 1110 and the seat portion 1210.

[0170] The extension 220 of the lens holder 200 and the first receiving portion 120 of the housing 100 can face the step portion 1120 in a direction perpendicular to the optical axis (Z-axis direction) (e.g., Y-axis direction).

[0171] The mounting space for the extension 220 of the lens holder 200 and the first receiving portion 120 of the housing 100 can be ensured by the second receiving portion 1110. Therefore, even if the extension 220 of the lens holder 200 and the first receiving portion 120 of the housing 100 protrude in the optical axis direction (Z-axis direction), the protruding portion is provided within the gap space of the fixed frame 1000, thus keeping the overall height of the camera module 1 relatively small.

[0172] The fixed frame 1000 can be a fixed component that does not move during focus adjustment and optical image stabilization. The movable frame 2000 can be a movable component that moves during optical image stabilization.

[0173] The movable frame 2000 can be housed within the fixed frame 1000. The fixed frame 1000 has a sidewall extending downward in the optical axis direction (Z-axis direction), and therefore the fixed frame 1000 can have a receiving space for receiving the movable frame 2000.

[0174] In the second module 20, the fixed frame 1000 may be a housing that provides internal space for accommodating the movable frame 2000, the second drive unit 3000, and the sensor substrate 4000. To distinguish the fixed frame 1000 from the housing 100 of the first module 10, in the following description, the housing 100 of the first module 10 may be referred to as the first housing, while the fixed frame 1000 of the second module 20 may be referred to as the second housing.

[0175] The movable frame 2000 can move relative to the fixed frame 1000 in a direction perpendicular to the optical axis (Z-axis direction), or it can rotate about the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis).

[0176] For example, the movable frame 2000 is configured to move in a first direction (Y-axis direction) and a second direction (X-axis direction), and to rotate about the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis).

[0177] The first direction (Y-axis direction) can be a direction perpendicular to the optical axis (Z-axis direction), and the second direction (X-axis direction) can be a direction perpendicular to both the optical axis (Z-axis direction) and the first direction (Y-axis direction).

[0178] The fixed frame 1000 and the movable frame 2000 may each have an opening that extends through the optical axis (Z-axis direction), and light passing through the lens unit 30 can be incident on the image sensor S through the opening.

[0179] The filter F can be disposed on the upper part of the movable frame 2000. For example, the filter F can be an infrared cut-off filter. The first mounting slot 2400 in which the filter F is mounted can be disposed on the upper part of the movable frame 2000. The sensor substrate 4000 can be mounted on the lower surface of the movable frame 2000.

[0180] The second ball unit 3500 can be set between the fixed frame 1000 and the movable frame 2000.

[0181] The second ball unit 3500 can be configured to contact the fixed frame 1000 and the movable frame 2000.

[0182] When the movable frame 2000 moves or rotates relative to the fixed frame 1000, the second ball unit 3500 can roll between the fixed frame 1000 and the movable frame 2000 to support the movement of the movable frame 2000.

[0183] With the provision of the second ball unit 3500, the movable frame 2000 can be easily moved in the first direction (Y-axis direction) and the second direction (X-axis direction) while maintaining a predetermined interval with the fixed frame 1000.

[0184] Since the movable frame 2000 is housed within the fixed frame 1000, it is necessary to reduce the thickness of the movable frame 2000 in order to reduce the height of the second module 20 in the optical axis direction (Z-axis direction). However, when the thickness of the movable frame 2000 is reduced, the rigidity of the movable frame 2000 may be weakened, thereby reducing the reliability of the movable frame 2000 against external vibrations or other disturbances.

[0185] Therefore, a reinforcing plate 2300 can be provided in the movable frame 2000 to enhance its rigidity. The reinforcing plate 2300 can be made of a material with higher rigidity than the material constituting the movable frame 2000. For example, the reinforcing plate 2300 can be made of stainless steel.

[0186] As an example, refer to Figure 15 The reinforcing plate 2300 can be integrally formed with the movable frame 2000 by insertion injection molding. In this case, the reinforcing plate 2300 can be manufactured by injecting resin material into the mold while the reinforcing plate 2300 is fixed in the mold, thus integrating it with the movable frame 2000.

[0187] The reinforcing plate 2300 can be disposed within the movable frame 2000. The reinforcing plate 2300 can be partially exposed to the outside of the movable frame 2000. In this way, by partially exposing the reinforcing plate 2300 to the outside of the movable frame 2000 while integrally forming the reinforcing plate 2300 and the movable frame 2000 within the movable frame 2000, the connection between the reinforcing plate 2300 and the movable frame 2000 can be improved, and separation of the reinforcing plate 2300 from the movable frame 2000 can be prevented.

[0188] The image sensor S can be mounted on the sensor substrate 4000. A portion of the sensor substrate 4000 can be connected to the movable frame 2000, and another portion of the sensor substrate 4000 can be connected to the fixed frame 1000.

[0189] The image sensor S can be mounted on a part of the sensor substrate 4000 that is connected to the moving frame 2000.

[0190] Since a portion of the sensor substrate 4000 is connected to the movable frame 2000, when the movable frame 2000 moves or rotates, the portion of the sensor substrate 4000 connected to the movable frame 2000 can also move or rotate together with the movable frame 2000. In other words, since a portion of the sensor substrate 4000 is connected to the movable frame 2000, and the image sensor S is disposed on that portion of the sensor substrate 4000 connected to the movable frame 2000, the image sensor S can also move or rotate when the movable frame 2000 moves or rotates.

[0191] Therefore, the image sensor S can move in a plane perpendicular to the optical axis (Z-axis) or rotate about the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis) in order to perform optical image stabilization when capturing an image.

[0192] The second drive unit 3000 can generate a driving force in a direction perpendicular to the optical axis (Z-axis direction) to move the moving frame 2000 in a direction perpendicular to the optical axis (Z-axis direction), or rotate the moving frame 2000 around the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis).

[0193] The second drive unit 3000 may include a first sub-drive unit and a second sub-drive unit. The first sub-drive unit can generate a driving force in a second direction (X-axis direction), and the second sub-drive unit can generate a driving force in a first direction (Y-axis direction).

[0194] The first sub-driving unit may include a second driving magnet 3210 and a second driving coil 3110. The second driving magnet 3210 and the second driving coil 3110 may be arranged to face each other in the optical axis direction (Z-axis direction).

[0195] The second driving magnet 3210 can be fixed to the movable frame 2000. The second driving magnet 3210 may include multiple magnets. For example, the second driving magnet 3210 may include a group of magnets spaced apart from each other in a first direction (Y-axis direction) perpendicular to the second direction (X-axis direction), wherein the second driving magnet 3210 generates a driving force in the second direction (X-axis direction). The second driving magnet 3210 may include multiple groups of magnets spaced apart from each other in the second direction (X-axis direction), and each group may include at least two magnets.

[0196] Magnets with elongated shapes in the first direction (Y-axis direction) can also be used; however, when a magnet has a shape that is too long in one direction, there is a risk that the magnet may be damaged during manufacturing. Therefore, reliability during manufacturing can be improved by arranging multiple magnets spaced apart from each other in the longitudinal direction as a group.

[0197] A second mounting slot 2200, in which a second driving magnet 3210 is provided, can be formed in the upper part of the movable frame 2000. By inserting the second driving magnet 3210 into the second mounting slot 2200, the height of the second module 20 and the camera module 1 can be prevented from increasing due to the thickness of the second driving magnet 3210.

[0198] The second driving magnet 3210 can be magnetized such that a surface (e.g., the surface facing the second driving coil 3110) has an N pole and a S pole. For example, the N pole, the neutral region, and the S pole can be arranged sequentially in a second direction (X-axis direction) on a surface of the second driving magnet 3210 facing the second driving coil 3110.

[0199] Furthermore, another surface of the second driving magnet 3210 (e.g., a surface opposite to the first surface) can be magnetized to have a polarity opposite to that of the first surface. For example, an S pole, a neutral region, and an N pole can be sequentially arranged on the other surface of the second driving magnet 3210 in a second direction (X-axis direction).

[0200] The magnetization directions of the magnet group included in the second driving magnet 3210 can all be the same.

[0201] The second drive coil 3110 can be configured to face the second drive magnet 3210. For example, the second drive coil 3110 can be configured to face the second drive magnet 3210 in the optical axis direction (Z-axis direction).

[0202] The second drive coil 3110 may have a hollow ring extending in a first direction (Y-axis direction). The second drive coil 3110 may include a smaller number of coils than the number of magnets included in the second drive magnet 3210. For example, the second drive coil 3110 may include two coils spaced apart from each other in a second direction (X-axis direction) that generates the driving force, and each coil may be configured to face each set of magnets of the second drive magnet 3210.

[0203] The second driving magnet 3210 may be a movable component mounted on the movable frame 2000 and moving together with the movable frame 2000, and the second driving coil 3110 may be a fixed component fixed to the fixed frame 1000.

[0204] When power is supplied to the second drive coil 3110, the driving force for moving the moving frame 2000 in the second direction (X-axis direction) can be generated by the electromagnetic force between the second drive magnet 3210 and the second drive coil 3110.

[0205] The second sub-drive unit may include a third drive magnet 3220 and a third drive coil 3120. The third drive magnet 3220 and the third drive coil 3120 may be arranged to face each other in the optical axis direction (Z-axis direction).

[0206] The third driving magnet 3220 may be disposed on the movable frame 2000. The third driving magnet 3220 may include multiple magnets. For example, the third driving magnet 3220 may include two magnets, and the two magnets may be spaced apart from each other along a second direction (X-axis direction). For example, the third driving magnet 3220 may include two magnets disposed between each other in a second direction (X-axis direction) perpendicular to the first direction (Y-axis direction), wherein the third driving magnet 3220 generates a driving force in the first direction (Y-axis direction).

[0207] A second mounting slot 2200, in which a third driving magnet 3220 is provided, can be formed in the upper part of the movable frame 2000. By inserting the third driving magnet 3220 into the second mounting slot 2200, the height of the second module 20 and the camera module 1 can be prevented from increasing due to the thickness of the third driving magnet 3220.

[0208] The third driving magnet 3220 can be magnetized such that one surface (e.g., the surface facing the third driving coil 3120) has an S pole and a N pole. For example, the S pole, neutral region, and N pole can be sequentially arranged on one surface of the third driving magnet 3220 facing the third driving coil 3120 in a first direction (Y-axis direction). Another surface of the third driving magnet 3220 (e.g., the surface opposite to one surface) can be magnetized to have a polarity opposite to that of said one surface. For example, the N pole, neutral region, and S pole can be sequentially arranged on the other surface of the third driving magnet 3220 in the first direction (Y-axis direction).

[0209] The magnetization directions of the two magnets included in the third driving magnet 3220 can be opposite to each other.

[0210] The third drive coil 3120 can be configured to face the third drive magnet 3220. For example, the third drive coil 3120 can be configured to face the third drive magnet 3220 in the optical axis direction (Z-axis direction).

[0211] The third drive coil 3120 may have a hollow ring that extends in the second direction (X-axis direction). The third drive coil 3120 may include a number of coils corresponding to the number of magnets included in the third drive magnet 3220. For example, the third drive coil 3120 may include two coils corresponding to two magnets included in the third drive magnet 3220.

[0212] The third driving magnet 3220 may be a movable component mounted on the movable frame 2000 and moving together with the movable frame 2000, and the third driving coil 3120 may be a fixed component fixed to the fixed frame 1000.

[0213] When the third drive coil 3120 is powered, the driving force for moving the moving frame 2000 in the first direction (Y-axis direction) can be generated by the electromagnetic force between the third drive magnet 3220 and the third drive coil 3120.

[0214] The driving forces generated by the first sub-drive unit and the second sub-drive unit can be combined to rotate the moving frame 2000. For example, by controlling the driving forces of the first sub-drive unit and the second sub-drive unit, a torque can be generated about the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis), thereby rotating the moving frame 2000.

[0215] The second driving magnet 3210 and the third driving magnet 3220 can be arranged perpendicularly to each other in a plane perpendicular to the optical axis (Z-axis direction), and the second driving coil 3110 and the third driving coil 3120 can also be arranged perpendicularly to each other in a plane perpendicular to the optical axis (Z-axis direction). That is, the angle between the second driving magnet 3210 and the third driving magnet 3220 can be approximately 90°, and the angle between the second driving coil 3110 and the third driving coil 3120 can be approximately 90°.

[0216] The second ball unit 3500 can be disposed between the fixed frame 1000 and the movable frame 2000. The second ball unit 3500 may include multiple balls disposed between the fixed frame 1000 and the movable frame 2000.

[0217] The second ball unit 3500 can be configured to contact the fixed frame 1000 and the movable frame 2000. The second ball unit 3500 can be used to guide the movement of the movable frame 2000 during the optical image stabilization process. In addition, the second ball unit 3500 can be used to maintain the interval between the fixed frame 1000 and the movable frame 2000.

[0218] When a driving force is generated in the first direction (Y-axis direction), the second ball unit 3500 can roll in the first direction (Y-axis direction). Therefore, the second ball unit 3500 can guide the movement of the moving frame 2000 in the first direction (Y-axis direction).

[0219] Furthermore, when a driving force is generated in the second direction (X-axis direction), the second ball unit 3500 can roll in the second direction (X-axis direction). Therefore, the second ball unit 3500 can guide the movement of the moving frame 2000 in the second direction (X-axis direction).

[0220] The surfaces of the fixed frame 1000 and the movable frame 2000 facing each other in the optical axis direction (Z-axis direction) can be provided with guide grooves 1220 and 2100 in which the second ball unit 3500 is disposed. The multiple guide grooves 1220 and 2100 can be configured as multiple balls corresponding to the second ball unit 3500.

[0221] For example, a fifth guide groove 1220 may be formed in the lower surface of the fixed frame 1000, and a sixth guide groove 2100 may be formed in the upper surface of the movable frame 2000.

[0222] The second ball unit 3500 can be disposed in the fifth guide groove 1220 and the sixth guide groove 2100 for assembly between the fixed frame 1000 and the movable frame 2000.

[0223] Each of the fifth guide groove 1220 and the sixth guide groove 2100 can have a polygonal or circular planar shape. The dimensions of the fifth guide groove 1220 and the sixth guide groove 2100 can be larger than the diameter of the sphere of the second ball unit 3500. For example, the cross-section of the fifth guide groove 1220 and the sixth guide groove 2100 in a plane perpendicular to the optical axis (Z-axis) can have a dimension larger than the diameter of the sphere of the second ball unit 3500. The specific shape of the fifth guide groove 1220 and the sixth guide groove 2100 is not limited, as long as the dimensions of the fifth guide groove 1220 and the sixth guide groove 2100 are larger than the diameter of the sphere of the second ball unit 3500. Therefore, with the second ball unit 3500 positioned in the fifth guide groove 1220 and the sixth guide groove 2100, the second ball unit 3500 can roll in a direction perpendicular to the optical axis (Z-axis direction).

[0224] A portion of the reinforcing plate 2300 may be exposed to the outside via the upper surface of the movable frame 2000. The exposed portion of the reinforcing plate 2300 may form the bottom surface of the sixth guide groove 2100. Therefore, the second ball unit 3500 may roll into contact with the reinforcing plate 2300.

[0225] The second drive unit 3000 of the second module 20 may include position sensors 3310 and 3320, which are capable of detecting the position of the moving frame 2000 in a direction perpendicular to the optical axis (Z-axis direction).

[0226] For this purpose, a second position sensor 3310 and a third position sensor 3320 can be provided. The second position sensor 3310 can be disposed on the fixed frame 1000 facing the second driving magnet 3210, and the third position sensor 3320 can be disposed on the fixed frame 1000 facing the third driving magnet 3220. The second position sensor 3310 and the third position sensor 3320 can be Hall sensors.

[0227] The third position sensor 3320 may include two Hall sensors. For example, the third drive magnet 3220 may include two magnets spaced apart from each other in a second direction (X-axis direction) perpendicular to the first direction (Y-axis direction), wherein the third drive magnet 3220 generates a driving force in the first direction (Y-axis direction), and the third position sensor 3320 may include two Hall sensors arranged to face the two magnets of the third drive magnet 3220.

[0228] Two Hall sensors facing the third drive magnet 3220 of the third position sensor 3320 can be used to detect whether the moving frame 2000 has rotated.

[0229] By creating a difference between the driving force of the first sub-drive unit and the driving force of the second sub-drive unit, using the combined force of the first and second sub-drive units, using two magnets and two coils included in the second sub-drive unit, or using other techniques, torque about the optical axis (Z-axis) can be intentionally generated.

[0230] Since the fifth guide groove 1220 and the sixth guide groove 2100 have polygonal or circular shapes and their dimensions are larger than the diameter of the ball of the second ball unit 3500, the second ball unit 3500 disposed between the fifth guide groove 1220 and the sixth guide groove 2100 can roll in any direction perpendicular to the optical axis (Z-axis direction) without restriction.

[0231] Therefore, the movable frame 2000 can rotate about the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis), while being supported by the second ball unit 3500.

[0232] Furthermore, when linear movement is required but rotation around the optical axis (Z-axis) or a rotational axis parallel to the optical axis (Z-axis) is not required, any unintentional torque around the optical axis (Z-axis) or a rotational axis parallel to the optical axis (Z-axis) can be counteracted by controlling the driving force of the first sub-drive unit and / or the driving force of the second sub-drive unit.

[0233] refer to Figure 13 and Figure 14The fixing frame 1000 includes a wiring pattern 1300 embedded therein, and the wiring pattern 1300 can be connected to the second drive coil 3110 and the third drive coil 3120. Furthermore, the wiring pattern 1300 of the fixing frame 1000 can be connected to the sensor substrate 4000. Therefore, the second drive coil 3110 and the third drive coil 3120 can be powered through the wiring pattern 1300 embedded in the fixing frame 1000.

[0234] In other words, the camera module 1 may include wiring pattern 1300 embedded in the fixed frame 1000 itself, without the need for a separate printed circuit board to power the second drive unit 3000.

[0235] The wiring pattern 1300 can be embedded in the fixing frame 1000 by insertion injection molding. For example, the wiring pattern 1300 can be embedded in the fixing frame 1000 by injecting resin material into the mold while setting the wiring pattern 1300 in the mold.

[0236] According to an exemplary embodiment, the camera module 1 can undergo at least two insertion injection molding processes during the manufacture of the fixed frame 1000.

[0237] When the pattern width of the wiring pattern 1300 is minimized to reduce its size, the wiring pattern 1300 lacks sufficient rigidity, making it difficult to fix its position during insert molding. Therefore, a primary injection molded product, namely a first frame 1200 integrated with the wiring pattern 1300, is manufactured by insert molding, and then the primary injection molded product is insert molded to form a secondary injection molded product, namely a second frame 1100 integrated with the primary injection molded product, thereby creating a fixed frame 1000 with the wiring pattern 1300 embedded therein.

[0238] The wiring pattern 1300 may include wiring units 1310 and terminal units 1320. The wiring units 1310 may be embedded inside the first frame 1200, and the terminal units 1320 may be exposed outside the first frame 1200. Furthermore, the terminal units 1320 may be exposed outside the second frame 1100. The terminal units 1320 of the wiring pattern 1300 may be connected to the sensor substrate 4000, thereby enabling power supply to the second drive coil 3110 and the third drive coil 3120 via the wiring pattern 1300.

[0239] The fifth guide groove 1220, in which the second ball unit 3500 is provided, can be formed in the first frame 1200. Since the ball of the second ball unit 3500 can be made of ceramic and the first frame 1200 is made of plastic, there is a risk that the fifth guide groove 1220 may be damaged due to the difference in stiffness between the ceramic and the plastic.

[0240] Therefore, to prevent damage to the fifth guide groove 1220, a support pad unit 1500 can be provided to form the bottom surface of the fifth guide groove 1220, and the support pad unit 1500 can be inserted into the injection mold in the same manner as the wiring pattern 1300 in the primary insertion injection molding process discussed above, as integral with the first frame 1200. The support pad unit 1500 can be made of stainless steel.

[0241] A portion of the support pad unit 1500 may be embedded in the first frame 1200, and another portion of the support pad unit 1500 may be exposed to the outside of the first frame 1200.

[0242] The portion of the support pad unit 1500 exposed outside the first frame 1200 can form the bottom surface of the fifth guide groove 1220. Therefore, the second ball unit 3500 can roll contact with the support pad unit 1500.

[0243] The second yoke unit 3400 can be embedded in the fixed frame 1000. The second yoke unit 3400 enables the generation of a magnetic attraction with the movable frame 2000, so that the fixed frame 1000 and the movable frame 2000 can maintain contact with the second ball unit 3500.

[0244] The second yoke unit 3400 can be inserted into the injection mold in the same manner as the wiring pattern 1300 in the primary insertion injection process discussed above, as integral with the first frame 1200.

[0245] The second yoke unit 3400 can be configured to face the second driving magnet 3210 and the third driving magnet 3220 in the optical axis direction (Z-axis direction), such that magnetic attraction can act between the second yoke unit 3400 and the second driving magnet 3210, and between the second yoke unit 3400 and the third driving magnet 3220. The second yoke unit 3400 includes multiple yokes. For example, the second yoke unit 3400 may include two yokes facing the two magnets included in the third driving magnet 3220 and two yokes facing one of the two sets of magnets included in the second driving magnet 3210.

[0246] The number of yokes in the second yoke unit 3400 is not limited to four. Rather, the support center point of the magnetic attraction acting between the second yoke unit 3400 and the second driving magnet 3210, and between the second yoke unit 3400 and the third driving magnet 3220, can be located within the support area defined by the line connecting the centers of the plurality of spheres included in the second sphere unit 3500 to each other.

[0247] Magnetic attraction acts in the optical axis direction (Z-axis direction) between the second yoke unit 3400 and the second driving magnet 3210, and between the second yoke unit 3400 and the third driving magnet 3220.

[0248] Therefore, since the movable frame 2000 is compressed by magnetic attraction in the direction toward the fixed frame 1000, the fixed frame 1000 and the movable frame 2000 can maintain contact with the second ball unit 3500.

[0249] The second yoke unit 3400 may be made of a material capable of generating magnetic attraction with the second driving magnet 3210 and the third driving magnet 3220. For example, the second yoke unit 3400 may be made of a magnetic material.

[0250] The fixed frame 1000 may also include a shield 1400. The shield 1400 may cover at least a portion of the upper and side surfaces of the second frame 1100, which is a secondary injection-molded product. The shield 1400 may be used to shield electromagnetic waves.

[0251] refer to Figure 16 The sensor substrate 4000 may include a movable portion 4100, a fixed portion 4200, and a connecting portion 4300. The sensor substrate 4000 may be a rigid-flexible printed circuit board (RF PCB).

[0252] The image sensor S is mounted on the movable part 4100. The movable part 4100 is coupled to the lower surface of the movable frame 2000. For example, the area of ​​the movable part 4100 may be larger than the area of ​​the image sensor S, and the portion of the movable part 4100 surrounding the image sensor S may be coupled to the lower surface of the movable frame 2000.

[0253] The moving part 4100 may be a moving component that moves together with the moving frame 2000 during optical image stabilization. The moving part 4100 may be a rigid PCB.

[0254] The fixing part 4200 can be attached to the lower surface of the fixing frame 1000. The fixing part 4200 can be a fixed member that does not move during optical image stabilization. The fixing part 4200 can be a rigid PCB.

[0255] The connecting portion 4300 can be disposed between the moving portion 4100 and the fixed portion 4200, and can connect the moving portion 4100 and the fixed portion 4200 to each other. The connecting portion 4300 can be a flexible PCB. When the moving portion 4100 moves, at least a portion of the connecting portion 4300 disposed between the moving portion 4100 and the fixed portion 4200 can be bent.

[0256] The connecting portion 4300 extends along the periphery of the moving portion 4100. The connecting portion 4300 may include a plurality of slits passing through it in the optical axis direction. The plurality of slits may be spaced apart between the moving portion 4100 and the fixed portion 4200. Therefore, the connecting portion 4300 may include a plurality of bridging elements 4330 spaced apart from each other by the plurality of slits. The plurality of bridging elements 4330 may extend along the periphery of the moving portion 4100.

[0257] The connecting portion 4300 may include a first support portion 4310 and a second support portion 4320. The connecting portion 4300 can be connected to the fixed portion 4200 via the first support portion 4310. Furthermore, the connecting portion 4300 can be connected to the movable portion 4100 via the second support portion 4320.

[0258] For example, the first support portion 4310 may contact and be connected to the fixed portion 4200, and may be spaced apart from the movable portion 4100. The second support portion 4320 may contact and be connected to the movable portion 4100, and may be spaced apart from the fixed portion 4200.

[0259] For example, the first support portion 4310 may extend in a second direction (X-axis direction) to connect the plurality of bridging elements 4330 of the connecting portion 4300 and the fixed portion 4200 to each other. In an exemplary embodiment, the first support portion 4310 may include two support portions disposed on opposite sides of the movable portion 4100 in the second direction (X-axis direction).

[0260] The second support portion 4320 may extend in a first direction (Y-axis direction) to connect the plurality of bridging elements 4330 of the connecting portion 4300 and the moving portion 4100 to each other. In an exemplary embodiment, the second support portion 4320 may include two support portions disposed on opposite sides of the moving portion 4100 in the first direction (Y-axis direction).

[0261] Therefore, the movable part 4100 can move in a direction perpendicular to the optical axis (Z-axis direction) while being supported by the connecting part 4300, or rotate about the optical axis (Z-axis) or a rotation axis parallel to the optical axis (Z-axis).

[0262] In an exemplary embodiment, when the image sensor S moves in the first direction (Y-axis direction), the plurality of bridging elements 4330 connected to the first support portion 4310 can be bent. Furthermore, when the image sensor S moves in the second direction (X-axis direction), the plurality of bridging elements 4330 connected to the second support portion 4320 can be bent. Additionally, when the image sensor S rotates, the plurality of bridging elements 4330 connected to the first support portion 4310 and the plurality of bridging elements 4330 connected to the second support portion 4320 can be bent together.

[0263] In an exemplary embodiment, the length of the fixed portion 4200 in the first direction (Y-axis direction) and the length in the second direction (X-axis direction) may be different from each other. For example, the length of the fixed portion 4200 in the second direction (X-axis direction) may be shorter than its length in the first direction (Y-axis direction).

[0264] In an exemplary embodiment, the sensor substrate 4000 may have an overall rectangular shape. In this type of sensor substrate 4000, when the lengths of the first support portion 4310 and the second support portion 4320 are equal, the loads applied to the plurality of bridging elements 4330 connected to the first support portion 4310 and the loads applied to the plurality of bridging elements 4330 connected to the second support portion 4320 are different, and therefore, it is difficult to control the drive.

[0265] Therefore, by making the lengths of the first support portion 4310 and the second support portion 4320 different from each other, the lengths of the plurality of bridging elements 4330 extending from the first support portion 4310 in the first direction (Y-axis direction) and the lengths of the plurality of bridging elements 4330 extending from the second support portion 4320 in the second direction (X-axis direction) can be approximately equal to each other. Here, the length of the first support portion 4310 can refer to its length in the first direction (Y-axis direction), and the length of the second support portion 4320 can refer to its length in the second direction (X-axis direction).

[0266] The driver IC C3 for drive control of the second drive unit 3000 can be disposed on the sensor substrate 4000. The driver IC C3 can be disposed on the connection substrate C2, and the connection substrate C2 can be connected to the fixed part 4200 through the flexible PCB C4.

[0267] The driver IC C3 can be fixed to the upper surface of the fixing frame 1000 (e.g., the upper surface of the shield 1400). That is, since the flexible PCB C4 can be bent, the connection substrate C2 on which the driver IC C3 is mounted can be positioned on the upper surface of the fixing frame 1000. Therefore, since there is no need to ensure separate mounting space, the overall size of the camera module 1 can be reduced.

[0268] Furthermore, a first connector C1 for connecting to an external power source (e.g., a portable electronic device in which the camera module 1 is mounted) may extend and be disposed on the fixed portion 4200 of the sensor substrate 4000.

[0269] The base 5000 can be attached to the lower part of the sensor substrate 4000. The base 5000 can be attached to the lower part of the sensor substrate 4000 to cover the lower part of the sensor substrate 4000. The base 5000 can be used to prevent external foreign objects from being introduced through the space between the moving part 4100 and the fixed part 4200 of the sensor substrate 4000.

[0270] The heat dissipation film 5100 can be disposed below the base 5000, and the heat dissipation film 5100 can cover the lower part of the base 5000 and the side surface of the second module 20. For example, the heat dissipation film 5100 can cover the lower surface of the base 5000, and if necessary, it can also cover any one or both of the side surfaces of the sensor substrate 4000 and the side surfaces of the fixing frame 1000. Therefore, the heat generated by the image sensor S can be effectively dissipated.

[0271] In the second module 20, the positions of the drive coils 3110 and 3120 and the drive magnets 3210 and 3220 are not limited to those described above. For example, as Figure 18 As shown, drive magnets 3210 and 3220 can be mounted on a fixed body, and drive coils 3110 and 3120 can be mounted on a moving body.

[0272] Figure 18 This is an exploded perspective view of the second module 20' according to other exemplary embodiments. (See reference) Figure 18 The second driving magnet 3210 and the third driving magnet 3220 can be disposed in the fixed frame 1000, and the second driving coil 3110 and the third driving coil 3120 can be disposed in the movable frame 2000 which can move relative to the fixed frame 1000.

[0273] The second driving magnet 3210 and the third driving magnet 3220 can be configured to face the second driving coil 3110 and the third driving coil 3120 respectively in the optical axis direction (Z-axis direction).

[0274] Due to the electromagnetic interaction between the driving magnets 3210 and 3220 and the driving coils 3110 and 3120, the movable frame 2000 can move relative to the fixed frame 1000. When the movable frame 2000 moves, the image sensor S connected to the movable frame 2000 can move along with the movable frame 2000.

[0275] Drive coils 3110 and 3120 can be disposed on the upper surface of the movable frame 2000 facing the fixed frame 1000. Drive magnets 3210 and 3220 can be disposed on the surface of the fixed frame 1000 facing the movable frame 2000.

[0276] Since the drive coils 3110 and 3120 are arranged on the moving frame 2000, they can be powered by the wiring configuration connected to the image sensor S. Therefore, since it is not necessary to configure a separate wiring pattern in the fixed frame 1000, the wiring structure of the second module 20' can be configured more simply than the wiring structure in the second module 20.

[0277] exist Figure 18 In the second module 20' shown, it should be noted that all features other than those described above can be used with... Figures 11 to 17 The second module 20 shown has the same features.

[0278] In the following text, reference will be made to Figure 19 and Figure 20 Describe in detail the arrangement relationship between the first module 10 and the second module 20.

[0279] Figure 19 It is along Figure 1 A cross-sectional view taken by the line XIX-XIX'. Figure 20 yes Figure 19 An enlarged view of the dashed section B.

[0280] because Figure 19 and Figure 20 The first module 10, the second module 20, and the camera module 1 including the first module 10 and the second module 20 shown correspond to the above. Figures 1 to 18 The first module 10 and the second module 20 or 20' shown, as well as the camera module 1 including the first module 10 and the second module 20 or 20', can therefore omit redundant descriptions of them.

[0281] The lens holder 200 has an extension 220 protruding in the optical axis direction (Z-axis direction), and the housing 100 also has a first receiving portion 120 protruding in the optical axis direction (Z-axis direction). The extension 220 can be received in the receiving space RS of the first receiving portion 120, and the first receiving portion 120 can be disposed in the second receiving portion 1110 of the fixed frame 1000.

[0282] Since the second receiving portion 1110 of the fixed frame 1000 has a stepped shape in the upper surface of the fixed frame 1000 (i.e., the seat portion 1210), at least a portion of the first receiving portion 120 and at least a portion of the extension 220 provided on the first receiving portion 120 can be positioned below the seat portion 1210 of the fixed frame 1000 in the optical axis direction (Z-axis direction).

[0283] Therefore, the extension 220 of the lens holder 200 and the first receiving portion 120 of the housing 100 can overlap with the second module 20 in a first direction (e.g., the Y-axis direction) perpendicular to the optical axis direction (Z-axis direction).

[0284] Here, "two components overlapping in a first direction" can mean that, when viewed in the first direction, the two components can be positioned where they overlap each other. For example, when the first component and the second component are positioned to overlap each other in the first direction, a virtual line extending in the first direction will pass through both the first component and the second component.

[0285] refer to Figure 19 and Figure 20 A virtual first extension line L1, extending from the end of the extension 220 of the lens holder 200 in the optical axis direction (Z-axis direction) in a first direction perpendicular to the optical axis direction (Y-axis direction), can pass through the second module 20. For example, the first extension line L1 can pass through any of the step portion 1120 of the fixed frame 1000, the second ball unit 3500, and the movable frame 2000. Alternatively, the first extension line L1 can be located below the seat portion 1210 of the fixed frame 1000 in the optical axis direction (Z-axis direction). Alternatively, the distance from the first extension line L1 to the image sensor S can be shorter than the distance from the contact point P between the second ball unit 3500 and the fixed frame 1000 to the image sensor S.

[0286] A virtual second extension line L2 extending from the end of the first receiving portion 120 of the housing 100 in the optical axis direction (Z-axis direction) in a first direction (Y-axis direction) perpendicular to the optical axis direction (Z-axis direction) can be positioned below the first extension line L1 in the optical axis direction (Z-axis direction).

[0287] The second extension line L2 can pass through the second module 20. For example, the second extension line L2 can pass through either the step portion 1120 of the fixed frame 1000 or the movable frame 2000. Furthermore, the first extension line L1 can be positioned in the optical axis direction (Z-axis direction) below the seat portion 1210 of the fixed frame 1000 and the second ball unit 3500. That is, the lower surface of the first receiving portion 120 of the housing 100 can be located in the optical axis direction (Z-axis direction) below the second ball unit 3500 included in the second module 20. Since the first ball unit 400 can be disposed between the extension portion 220 and the first receiving portion 120, among the plurality of balls included in the first ball unit 400, the center of the lowest main ball BG1A located in the optical axis direction (Z-axis direction) can be located in the optical axis direction (Z-axis direction) below the upper surface of the fixed frame 1000 (i.e., the seat portion 1210).

[0288] For example, refer to Figure 20 Among the plurality of spheres included in the first sphere unit 400, the main sphere BG1A located on the lowermost side in the optical axis direction (Z-axis direction) can at least partially overlap the second sphere unit 3500 in a first direction (Y-axis direction) perpendicular to the optical axis direction (Z-axis direction).

[0289] In camera module 1, a portion of the first module 10 and a portion of the second module 20 can be configured to overlap each other in a direction perpendicular to the optical axis (Z-axis direction), thereby improving the optical and driving performance of camera module 1 without increasing the overall height of camera module 1.

[0290] Furthermore, since the extension 220 of the lens holder 200 can be disposed in the gap space (i.e., the first receiving portion 120) provided in the housing 100, and the first receiving portion 120 of the housing 100 can be disposed in the gap region (i.e., the second receiving portion 1110) provided in the fixed frame 1000, even if the extension 220 of the lens holder 200 and the first receiving portion 120 of the housing 100 protrude in the optical axis direction (Z-axis direction), the height of the entire camera module 1 can be kept small.

[0291] Furthermore, since the first receiving portion 120 protrudes further downward in the optical axis direction (Z-axis direction) than the lower surface 110 of the housing 100, the height of the first module 10 for the focus adjustment function can be configured to be smaller, while ensuring mounting space for the first drive unit 300 to ensure driving force.

[0292] The camera module 1 can be configured such that the lens unit 30 moves in the optical axis direction (Z-axis direction) during autofocus adjustment, and the image sensor S can be configured to move in a direction perpendicular to the optical axis direction (Z-axis direction) during optical image stabilization. Therefore, even if the lens unit 30 moves in the optical axis direction (Z-axis direction) during focus adjustment, the relative positions of the drive magnet and drive coil of the second drive unit 3000 do not change, thus allowing precise control of the driving force used for optical image stabilization. Furthermore, even if the image sensor S moves in a direction perpendicular to the optical axis direction (Z-axis direction) during optical image stabilization, the relative positions of the drive magnet and drive coil of the first drive unit 300 do not change, thus allowing precise control of focus adjustment.

[0293] According to an exemplary embodiment, a camera module can be implemented that, through a lens holder having a portion protruding in the optical axis direction and a housing structure capable of receiving the lens holder having the protruding portion, achieves sufficient space for ensuring driving force without increasing the overall height.

[0294] While this disclosure includes specific examples, it will be apparent upon understanding the disclosure of this application that various changes in form and detail may be made in these examples without departing from the spirit and scope of the claims and their equivalents. The examples described herein are to be considered descriptive only and not for limiting purposes. The description of features or aspects in each example is to be considered applicable to similar features or aspects in other examples. Suitable results may also be obtained if the described techniques are performed in a different order, and / or if the components in the described system, architecture, device, or circuit are combined in a different manner, and / or replaced or supplemented by other components or their equivalents. Therefore, the scope of this disclosure is not defined by the detailed description but by the claims and their equivalents, and all variations within the scope of the claims and their equivalents shall be construed as included in this disclosure.

Claims

1. A camera module, comprising: The first module is configured to move the lens unit in the optical axis direction; The second module is configured to move the image sensor in a direction perpendicular to the optical axis. The first spherical component supports the movement of the lens unit in the direction of the optical axis; as well as The second spherical component supports the movement of the image sensor in the direction perpendicular to the optical axis. Wherein, at least a portion of the first spherical component overlaps with the second spherical component in the direction perpendicular to the optical axis.

2. The camera module according to claim 1, wherein, The first spherical component includes a plurality of spheres arranged along the optical axis. Among the plurality of spheres, at least a portion of the sphere located at the lowest side in the optical axis direction overlaps with the second sphere member in the direction perpendicular to the optical axis direction.

3. The camera module according to claim 1, wherein, The first module includes: Casing; and A lens holder, disposed within the housing and configured to move together with the lens unit along the optical axis. The lens holder includes: The main body supports the lens unit; and An extension protrudes from the main body portion in the direction of the optical axis.

4. The camera module according to claim 3, wherein, The first module includes: A first driving magnet is disposed on the lens holder; and A first drive coil is disposed on the housing facing the first drive magnet. The first driving magnet is disposed in the extension.

5. The camera module according to claim 3, wherein, The extension and the housing are provided with guide grooves facing each other in the direction perpendicular to the optical axis, and The first ball component is disposed between the guide grooves.

6. The camera module according to claim 3, wherein, The second module includes: A sensor substrate in which the image sensor is disposed; A fixed frame is connected to the first module; and A movable frame, housed within the fixed frame and configured to move together with the sensor substrate in the direction perpendicular to the optical axis.

7. The camera module according to claim 6, wherein, The fixed frame is connected to the housing.

8. The camera module according to claim 7, wherein, The housing includes: The lower surface faces the main body portion in the direction of the optical axis; and The first receiving portion protrudes beyond the lower surface in the direction of the optical axis. The extension is disposed in the first receiving portion.

9. The camera module according to claim 8, wherein, The fixed frame includes: A seat, on which the lower surface of the housing rests; and The second receiving portion is located below the seat portion in the optical axis direction, forming a stepped shape with the seat portion. The first accommodating portion is disposed within the second accommodating portion.

10. The camera module according to claim 6, wherein, The second module includes: A second driving magnet and a third driving magnet, wherein the second driving magnet and the third driving magnet are arranged perpendicularly to each other; and The second and third coils face the second and third driving magnets in the direction of the optical axis.

11. The camera module according to claim 10, wherein, The second driving magnet and the third driving magnet are disposed in the movable frame or the fixed frame, and The second drive coil and the third drive coil are disposed in the fixed frame or the movable frame.

12. The camera module according to claim 11, wherein, The fixed frame or the movable frame, which is provided with the second drive coil and the third drive coil, includes a wiring pattern, and The wiring pattern is connected to the second drive coil, the third drive coil, and the sensor substrate.

13. The camera module according to claim 12, wherein, The wiring pattern is embedded in the fixed frame or the movable frame.

14. The camera module according to claim 6, wherein, The fixed frame and the movable frame are provided with guide grooves facing each other in the direction of the optical axis, and The second ball component is disposed between the guide grooves.

15. The camera module according to claim 6, wherein, The sensor substrate includes: The moving part includes the image sensor disposed therein and connected to the moving frame; The fixed part is connected to the fixed frame; and A connecting portion is disposed between the movable portion and the fixed portion, and At least a portion of the connecting portion is configured to be curved.

16. A camera module, comprising: The first module is configured to move the lens unit in the optical axis direction; as well as The second module is configured to move the image sensor in a direction perpendicular to the optical axis. Wherein, the first module and the second module are disposed along the optical axis direction, and The first module and the second module overlap in the direction perpendicular to the optical axis.

17. The camera module according to claim 16, wherein, The first module includes a housing, and the second module includes a fixing frame connected to the housing. The housing is arranged parallel to the fixed frame in the direction perpendicular to the optical axis.

18. The camera module according to claim 17, wherein, The housing includes a first receiving portion protruding in the direction of the optical axis. The fixed frame includes a second receiving portion, and The first receiving portion is disposed within the second receiving portion.

19. The camera module according to claim 18, wherein, The first module includes a lens holder disposed in the housing and configured to move together with the lens unit in the optical axis direction. The lens holder includes an extension that protrudes along the optical axis and is disposed within the first receiving portion. The extension is arranged parallel to the fixed frame in the direction perpendicular to the optical axis.

20. The camera module according to claim 19, wherein, The first module includes a first ball member disposed between the extension and the housing. The second module includes a second spherical member configured to contact the surface of the fixed frame, and The first spherical component overlaps with the second spherical component in the direction perpendicular to the optical axis.

Images