Camera actuator

Abstract

A camera actuator according to an embodiment includes a movable unit including a lens, and a driving unit that moves the movable unit in an optical axis direction, wherein the driving unit includes a circuit board, a sensing unit arranged on the circuit board and sensing a position of the movable unit, and a driver IC arranged on the circuit board and connected to the sensing unit. The sensing unit includes a first sensing unit and a second sensing unit, and a distance between the first sensing unit and the driver IC corresponds to a distance between the second sensing unit and the driver IC.

Description

Technical Field

[0001] The implementation relates to a camera actuator and a camera module including the camera actuator. Background Technology

[0002] The camera module performs the function of capturing objects and storing them as images or moving images, and the camera module is installed on mobile terminals such as mobile phones as well as various devices such as laptops, drones, and vehicles.

[0003] Typically, the aforementioned device is equipped with a miniature camera module that performs autofocus (AF) by automatically adjusting the distance between the image sensor and the lens to regulate the lens's focal length. Furthermore, the camera module can perform zooming functions by increasing or decreasing the magnification of distant objects using a zoom lens.

[0004] In addition, recently, camera modules have adopted image stabilization (IS) technology to correct or prevent image jitter caused by camera movement due to unstable fixtures or user movement.

[0005] Image stabilization (IS) techniques include optical image stabilizer (OIS) and image stabilization techniques using image sensors. OIS corrects motion by altering the light path, while image stabilization techniques using image sensors correct motion through mechanical and electronic methods, and OIS is more commonly used recently.

[0006] The camera module uses zoom actuators for the zoom function. These actuators move the positions of multiple zoom lens groups for autofocusing and to change the zoom magnification.

[0007] In this configuration, multiple zoom lens groups move along the optical axis direction along a guide rail portion connected to a protrusion on the housing. The housing and the guide rail portion can be connected to an adhesive member applied to a plane of the housing. In other words, the multiple protrusions formed on the housing define the connection position between the guide rail portion and the first lens group, and this connection position plays a crucial role in the performance of the camera module.

[0008] However, conventional camera modules suffer from reliability issues when the guide rail or the first lens group is fitted to the protrusion of the housing, such as overflow of the adhesive material applied around the protrusion. Furthermore, due to the overflow of the adhesive material, a portion of it flows into the housing's receiving space, and the movement of multiple zoom lens groups is restricted.

[0009] Therefore, a new camera module with a structure that can solve the problem of assembly reliability of the housing, guide rail, and first lens group is needed. Summary of the Invention

[0010] Technical issues

[0011] The embodiments provide a camera actuator with improved optical properties and a camera module including the camera actuator.

[0012] Furthermore, this embodiment provides a camera actuator capable of autofocus and high-magnification zoom, as well as a camera module including the camera actuator.

[0013] Furthermore, this embodiment provides a camera actuator capable of improving the assembly reliability of the components constituting a camera module, and a camera module including the camera actuator.

[0014] Furthermore, this embodiment provides a camera module and a camera device including the camera module described below: the camera module can solve reliability problems such as adhesion member agglomeration or overflow into the housing's containment space by specifying the flow path of the adhesive member applied to the housing or guide rail portion.

[0015] Technical solutions

[0016] A camera actuator according to one embodiment includes: a moving part including a lens; and a driving part for moving the moving part along an optical axis; wherein the driving part includes: a circuit board; a sensing part disposed on the circuit board and sensing the position of the moving part; and a driver IC disposed on the circuit board and connected to the sensing part; wherein the sensing part includes a first sensing part and a second sensing part, and the distance between the first sensing part and the driver IC corresponds to the distance between the second sensing part and the driver IC.

[0017] In addition, the camera actuator also includes: a base; and a guide rail portion connected to the base, wherein the moving portion includes a second lens assembly and a third lens assembly, the second lens assembly and the third lens assembly being disposed in the base and moving along the guide rail portion, a first sensing portion sensing the position of the second lens assembly, and the second sensing portion sensing the position of the third lens assembly.

[0018] Furthermore, the base includes a first sidewall, a second sidewall facing the first sidewall, and a lower portion located between the first sidewall and the second sidewall. The circuit board includes: a first substrate region corresponding to the first sidewall, and a first sensing portion disposed on the first substrate region; a second substrate region corresponding to the second sidewall, and a second sensing portion disposed on the second substrate region; and a third substrate region corresponding to the lower portion, and a driver IC disposed on the third substrate region.

[0019] In addition, the driving part includes: a first coil disposed on the first substrate region and surrounding the first sensing part; and a second coil disposed on the second substrate region and surrounding the second sensing part.

[0020] In addition, the circuit board includes: a first signal line connected between the first sensing part and the driver IC; a second signal line connected between the second sensing part and the driver IC; and wherein the length of the first signal line corresponds to the length of the second signal line.

[0021] In addition, the length of one of the first signal line and the second signal line is within the range of 95% to 105% of the length of the other signal line.

[0022] Furthermore, the guide rail portion includes: a first guide portion, which is disposed adjacent to a first sidewall of the base and includes a first guide rail; and a second guide portion, which is disposed adjacent to a second sidewall of the base and includes a second guide rail; wherein a second lens assembly moves along the first guide rail of the first guide portion, and a third lens assembly moves along the second guide rail of the second guide portion.

[0023] In addition, the base includes: a first opening formed in a first sidewall and corresponding to a first coil; a second opening formed in a second sidewall and corresponding to a second coil; and a third opening formed in the lower portion and corresponding to a driver IC.

[0024] On the other hand, the camera actuator according to this embodiment includes: a base, the base including a first sidewall, a second sidewall facing the first sidewall, and a lower portion located between the first sidewall and the second sidewall; a first guide portion, the first guide portion being disposed adjacent to the first sidewall of the base, and the first guide portion including a first guide rail; a second guide portion, the second guide portion being disposed adjacent to the second sidewall of the base, and the second guide portion including a second guide rail; a first lens assembly, the first lens assembly being coupled to and fixed to the base; a second lens assembly, the second lens assembly being disposed in the base and moving along the first guide rail of the first guide portion; a third lens assembly, the third lens assembly being disposed in the base and moving along the second guide rail of the second guide portion; and a driving portion, the driving portion driving a second lens... A lens assembly and a third lens assembly; wherein the driving part includes: a circuit board; a first driving part disposed on the circuit board and driving a second lens assembly; a second driving part disposed on the circuit board and driving a third lens assembly; and a driver IC disposed on the circuit board and connected to the first driving part and the second driving part; wherein the circuit board includes: a first substrate region corresponding to a first sidewall, and the first driving part disposed on the first substrate region; a second substrate region corresponding to a second sidewall, and the second driving part disposed on the second substrate region; and a third substrate region corresponding to a lower portion, and the driver IC disposed on the third substrate region.

[0025] Furthermore, the first driving part includes a first position sensor for sensing the position of the second lens assembly, wherein the second driving part includes a second position sensor for sensing the position of the third lens assembly, and the first distance between the driver IC and the first position sensor corresponds to the second distance between the driver IC and the second position sensor.

[0026] Furthermore, the first distance corresponds to the distance of the first signal line connected between the driver IC and the first position sensor, and the second distance corresponds to the distance of the second signal line connected between the driver IC and the second position sensor.

[0027] Beneficial effects

[0028] A camera actuator according to one embodiment and a camera module including the camera actuator can improve operational reliability. Specifically, the camera actuator and camera module according to this embodiment include a circuit board. Furthermore, the circuit board is provided with a first driving portion for driving a second lens assembly and a second driving portion for driving a third lens assembly. The first driving portion includes a first position sensor for sensing the position of the second lens assembly, and the second driving portion includes a second position sensor for sensing the position of the third lens assembly. Furthermore, the circuit board includes a driver IC that controls the first and second driving portions. In this case, the driver IC in this embodiment is disposed on the circuit board together with the first and second position sensors. Furthermore, the driver IC in this embodiment is disposed on the circuit board between the first and second position sensors. Specifically, a first distance between the first position sensor and the driver IC on the circuit board corresponds to a second distance between the second position sensor and the driver IC. Specifically, the length of a first signal line connecting the first position sensor and the driver IC on the circuit board corresponds to the length of a second signal line connecting the second position sensor and the driver IC. Therefore, this embodiment can minimize the distance between each position sensor and the driver IC, and thereby improve sensing accuracy by minimizing the influence of noise. Furthermore, this implementation allows the driver IC to be mounted on the same circuit board as the first and second position detection sensors, thereby minimizing the increase in size.

[0029] A camera actuator according to one embodiment, and a camera module including the camera actuator, can improve assembly reliability. Specifically, the camera actuator and camera module according to this embodiment include a base recess formed around a connecting protrusion of the base and defining a flow path for the adhesive member. Therefore, this embodiment can solve the problem of adhesive member overflowing into the interior of the base, thereby improving assembly reliability. Furthermore, this embodiment allows the base recess to include an extension portion extending from the base recess and not merely formed around the connecting protrusion of the base. Therefore, this embodiment can also prevent adhesive member from penetrating into the base, thereby improving product reliability.

[0030] Furthermore, the camera actuator and camera module including the camera actuator according to this embodiment also form a recess around the coupling hole of the guide rail portion, thus preventing the adhesive material from overflowing when the guide rail portion is connected to the lens assembly. In this case, the recess is not only formed around the coupling hole but also includes an additional recess spaced apart from the coupling hole and dividing a region between the area where the coupling hole is formed and the guide rail of the guide rail portion. Therefore, this embodiment can prevent the adhesive material from penetrating into the guide rail of the guide rail portion, thereby improving the movement accuracy of the lens assembly. Attached Figure Description

[0031] Figure 1 This is a perspective view of the first camera actuator according to the embodiment.

[0032] Figure 2 It is a series of parts that are omitted. Figure 1 A stereoscopic view of the first camera actuator.

[0033] Figure 3 yes Figure 1 An exploded perspective view of the first camera actuator shown.

[0034] Figure 4 This is an enlarged perspective view of one side of the guide rail portion according to the embodiment.

[0035] Figure 5 yes Figure 4 An enlarged view of a specific area of ​​the guide rail section.

[0036] Figure 6 This is an enlarged 3D view of the other side of the guide rail section.

[0037] Figure 7 yes Figure 3 A perspective view of the second lens assembly shown.

[0038] Figure 8 It is a series of parts that are omitted. Figure 7 A perspective view of the second lens assembly shown.

[0039] Figure 9 yes Figure 3 A perspective view of the third lens assembly shown.

[0040] Figure 10 It is a series of parts that are omitted. Figure 9 A perspective view of the third lens assembly shown.

[0041] Figure 11 It is based on Figure 2 The image shows a cross-sectional view of the camera module in the x-axis direction of the embodiment shown.

[0042] Figure 12 This is an example diagram of driving the second lens assembly according to an embodiment.

[0043] Figure 13 This is a perspective view of the first lens assembly according to the embodiment.

[0044] Figure 14 The first lens group is omitted. Figure 13 A three-dimensional view of the first lens assembly.

[0045] Figure 15 This is a perspective view of the base of the first camera actuator according to the embodiment.

[0046] Figure 16 yes Figure 15 The front view of the base shown.

[0047] Figure 17 It is an enlarged view of the area where the connecting protrusions with bases are formed.

[0048] Figure 18 This is a cross-sectional view of the base, guide rail portion, and first lens assembly according to the embodiment, in a connected state.

[0049] Figures 19a to 20b This is a perspective view illustrating the driving portion according to an embodiment.

[0050] Figure 21a This is a perspective view of a portion of the first drive section shown in Figure 19.

[0051] Figure 21b This is a detailed perspective view of the first magnetic yoke of the first driving portion according to the embodiment.

[0052] Figure 21c This is a three-dimensional view of the bottom of the first magnetic yoke.

[0053] Figure 21d This is a perspective view of some components of the first drive section according to the first additional embodiment.

[0054] Figure 21e This is a perspective view of some components of the first drive section according to the second additional embodiment.

[0055] Figure 22 This is a perspective view of the camera module according to the implementation method.

[0056] Figure 23 This is a perspective view of a camera module according to an embodiment, with some components omitted.

[0057] Figure 24This is an exploded perspective view of the second camera actuator according to the embodiment.

[0058] Figure 25 This is a view of the third drive section of the second camera actuator according to an embodiment.

[0059] Figure 26 This is a view of the third housing of the second camera actuator according to an embodiment.

[0060] Figure 27 and Figure 28 This is a view of the prism unit of the second camera actuator according to an embodiment.

[0061] Figure 29 This is a perspective view of a mobile terminal to which the camera module is applied according to the implementation method.

[0062] Figure 30 This is a perspective view of the vehicle to which the camera module is applied according to the implementation method. Detailed Implementation

[0063] In the following description, various embodiments will be described in detail with reference to the accompanying drawings. Although the invention can be modified in various ways and taken in various alternative forms, specific embodiments of the invention are shown as examples in the drawings and described in detail below. It is not intended to limit the invention to the specific forms disclosed, but rather the invention should cover all modifications, equivalents, and alternatives falling within the spirit and scope of the appended claims.

[0064] Although terms such as "first," "second," etc., can be used to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Furthermore, terms that are specifically defined in consideration of the configuration and operation of the embodiments are only used to describe the embodiments and do not limit the scope of the embodiments.

[0065] When describing various embodiments, the terms "above (upward) or below (downward)" and "front (forward) or rear (backward)" are used to describe elements. These terms can include two meanings: two elements are in direct contact with each other, or one or more other elements are disposed between two elements. Furthermore, when expressed as "above" or "below," it can include not only an upward direction based on an element but also a downward direction based on an element.

[0066] Furthermore, relational terms such as “above” and “below” used below do not necessarily require or imply any physical relationship or order or logical relationship or order between such entities or elements, but may be used to distinguish one entity or element from another.

[0067] The optical axis direction used below is defined as the optical axis direction of the camera actuator and lens connected to the camera module, and the vertical direction can be defined as the direction perpendicular to the optical axis.

[0068] The term "autofocus function" as used below is defined as follows: the function is used to automatically adjust the focus on the object by adjusting the distance from the image sensor according to the distance of the object and moving the lens along the optical axis, so that a clear image of the object can be obtained on the image sensor.

[0069] Meanwhile, autofocus can be interpreted as AF (Auto Focus). Furthermore, closed-loop autofocus (CLAF) control can be defined as: real-time feedback control of the lens position by sensing the distance between the image sensor and the lens to improve focus adjustment accuracy.

[0070] Furthermore, before describing the embodiments of the present invention, the first direction may refer to the x-axis direction shown in the accompanying drawings, and the second direction may be a direction different from the first direction. For example, the second direction may refer to the y-axis direction shown in the accompanying drawings, which is perpendicular to the first direction. Additionally, a third direction may be different from the first and second directions. For example, a third direction may refer to the z-axis direction shown in the accompanying drawings, which is perpendicular to both the first and second directions. Here, the third direction may refer to the optical axis direction.

[0071] In the following description, the configuration of the camera module according to this embodiment will be described with reference to the accompanying drawings.

[0072] (Implementation Method)

[0073] The camera module 10 according to this embodiment may include one or more actuators. For example, the camera module 10 may include a first camera actuator 1000 and a second camera actuator 2000.

[0074] The first camera actuator 1000 may be a zoom actuator and / or an autofocus actuator. The first camera actuator 1000 may include multiple lens groups. The first camera actuator 1000 may perform zoom or autofocus functions by moving at least one lens along the optical axis according to a control signal from a controller (not shown).

[0075] The second camera actuator 2000 can be an OIS (Optical Image Stabilizer) actuator. In this case, light incident on the camera module 10 from the outside can first be incident on the second camera actuator 2000. Furthermore, the path of the light incident on the second camera actuator 2000 can be changed to be incident on the first camera actuator 1000. Subsequently, the light passing through the first camera actuator 1000 can be incident on the image sensor (not shown).

[0076] The first camera actuator 1000 according to the embodiment will be described below.

[0077] -First camera actuator-

[0078] Figure 1 This is a perspective view of the first camera actuator according to the embodiment. Figure 2 It is a series of parts that are omitted. Figure 1 A stereoscopic view of the first camera actuator, and Figure 3 yes Figure 1 An exploded perspective view of the first camera actuator shown.

[0079] Reference Figure 1 According to the embodiments, the first camera actuator 1000 may include a base 100, a drive portion 200 disposed on the base 100, and a first lens assembly 600.

[0080] Figure 2 yes Figure 1 A perspective view of the first camera actuator 1000, omitting the base 100, the first lens assembly 600, and the fourth lens assembly 900. (Refer to...) Figure 2The first camera actuator 1000 may include a guide rail portion 500, a second lens assembly 700, and a third lens assembly 800. The guide rail portion 500 can guide the movement of the second lens assembly 700 and the third lens assembly 800 within the base 100. For this purpose, the guide rail portion 500 may include a first guide portion 300 for guiding the movement of the second lens assembly 700 and a second guide portion 400 for guiding the movement of the third lens assembly 800. Furthermore, a portion of the drive portion 200 may be disposed on the outer side (or outer region) of the base 100, and another portion of the drive portion 200 may be disposed on the inner side (or inner region) of the base 100. The drive portion 200 may include a circuit board 210, a first drive portion 220, and a second drive portion 230. The first drive portion 220 may include a first drive coil and a first drive magnet. Furthermore, the second drive portion 230 may include a second drive coil and a second drive magnet. The first driving coil and the first driving magnet of the first driving section 220 can provide a first driving force for moving the second lens assembly 700 along the guide rail of the first guiding section 300 in the optical axis direction. Furthermore, the second driving coil and the second driving magnet of the second driving section 230 can provide a second driving force for moving the third lens assembly 800 along the guide rail of the second guiding section 400 in the optical axis direction. Additionally, each of the first driving section 220 and the second driving section 230 may also include a magnetic yoke (described later). This will be described in more detail below.

[0081] exist Figure 3 In the xyz axis shown, the z axis refers to the direction of the optical axis or the direction parallel to the optical axis, the xz plane refers to the ground, the x axis refers to the direction perpendicular to the z axis in the ground (xz plane), and the y axis can refer to the direction perpendicular to the ground.

[0082] Reference Figure 3 According to this embodiment, the first camera actuator 1000 may include a base 100, a drive portion 200, a guide rail portion 500, a first lens assembly 600, a second lens assembly 700, a third lens assembly 800, and a fourth lens assembly 900.

[0083] The guide rail portion 500 may include a first guide portion 300 disposed on one side of the base 100 and a second guide portion 400 disposed on the other side of the base 100. The first guide portion 300 may correspond to the second lens assembly 700, and the second guide portion 400 may correspond to the third lens assembly 800. Furthermore, a first rolling member (described later) may be disposed between the first guide portion 300 and the second lens assembly 700. Furthermore, a second rolling member (described later) may be disposed between the second guide portion 400 and the third lens assembly 800.

[0084] This embodiment may include multiple lens assemblies. Among the multiple lens assemblies, a first lens assembly 600, a second lens assembly 700, a third lens assembly 800, and a fourth lens assembly 900 may be sequentially arranged from one side. The first lens assembly 600 may be positioned furthest from the image sensor (not shown) or closest to the second camera actuator 2000. Similarly, the fourth lens assembly 900 may be positioned closest to the image sensor (not shown) or furthest from the second camera actuator 2000. Furthermore, the second lens assembly 700 and the third lens assembly 800 may be disposed in the base 100 between the first lens assembly 600 and the fourth lens assembly 900. In this case, the first lens assembly 600 and the fourth lens assembly 900 may be fixed portions with fixed positions. For example, the image sensor (not shown) may be disposed outside the fourth lens assembly 900. Additionally, the second camera actuator 2000 may be disposed outside the first lens assembly 100.

[0085] Furthermore, the second lens assembly 700 and the third lens assembly 800 may be movable parts whose positions are moved.

[0086] In the following description, each configuration of the first camera actuator 1000 according to this embodiment will be described in detail with reference to the accompanying drawings.

[0087] <Guide Rail Guiding Section>

[0088] This embodiment may include a guide rail portion 500, which is used to move the second lens assembly 700 and the third lens assembly 800 along the optical axis.

[0089] The guide rail guide portion 500 includes a first guide portion 300 disposed adjacent to the first sidewall 100a of the base 100 and a second guide portion 400 disposed adjacent to the second sidewall 100b of the base 100.

[0090] The first guide portion 300 may be disposed between the second lens assembly 700 and the first sidewall 100a of the base 100.

[0091] The second guide portion 400 can be disposed between the third lens assembly 800 and the second sidewall 100b of the base 100. In this case, the first sidewall 100a and the second sidewall 100b of the base 100 can face each other. Accordingly, the first guide portion 300 and the second guide portion 400 can be disposed facing each other within the base 100.

[0092] According to this embodiment, the second lens assembly 700 and the third lens assembly 800 can be moved (or driven) with the first guide portion 300 and the second guide portion 400 connected in the base 100 under precise digital control. Therefore, this embodiment can reduce frictional torque and thus reduce frictional resistance. Thus, this embodiment can achieve technical effects such as increasing the driving force during zooming, reducing power consumption, and improving control characteristics.

[0093] According to this embodiment, during zooming, it is possible to prevent the multiple lens assemblies from becoming decent or tilted, and to prevent the central axis of the lens group and the central axis of the image sensor from becoming twisted, while minimizing frictional torque, and thus improving image quality or resolution.

[0094] For example, when the base itself has a guide rail, a gradient occurs along the injection direction, which makes dimensional management difficult, and the technical problem is that the driving force decreases as the frictional torque increases with the injection state.

[0095] On the other hand, this implementation allows for the separate use of the base 100 and the guide rail portion 500, and thus prevents gradients from occurring.

[0096] For example, the base 100 can be injection molded in the z-axis direction. In the comparative example, when the base and the guide rail portion are integrally formed, the following problem exists: the straightness of the guide rail is distorted due to the gradient that occurs when the guide rail is ejected in the z-axis direction.

[0097] According to this embodiment, gradients can be prevented compared to the comparative example because both the first guide portion 300 and the second guide portion 400 are injection molded separately from the base 100, thereby allowing for precise injection molding.

[0098] Furthermore, in this embodiment, the first guide portion 300 and the second guide portion 400 are injection molded in the x-axis direction, and the injection length can be shorter than the injection length of the base 100. Therefore, this embodiment can prevent the problem of torsion of the guide rails formed on the first guide portion 300 and the second guide portion 400 respectively.

[0099] Figure 4This is an enlarged perspective view of one side of the guide rail portion according to the embodiment. Figure 5 yes Figure 4 An enlarged view of a specific area of ​​the guide rail section, and Figure 6 This is an enlarged 3D view of the other side of the guide rail section.

[0100] Reference Figure 4 and Figure 5 The guide rail guide section 500 includes a first guide section 300 and a second guide section 400.

[0101] The first guide portion 300 may include one or more first guide rails 310. Furthermore, the second guide portion 400 may include one or more second guide rails 410.

[0102] For example, the first guide rail 310 of the first guide portion 300 may include a first-first guide rail 311 and a first-second guide rail 312. The first guide portion 300 may include a first support portion 320, which is located between the first-first guide rail 311 and the first-second guide rail 312.

[0103] Furthermore, the second guide rail 410 of the second guide portion 400 may include a second-first guide rail 411 and a second-second guide rail 412. The second guide portion 400 may include a second support portion 420 located between the second-first guide rail 411 and the second-second guide rail 412.

[0104] According to this embodiment, each of the first guide portion 300 and the second guide portion 400 includes a plurality of guide rails. Therefore, each of the second lens assembly 700 and the third lens assembly 800 according to this embodiment can move along the plurality of guide rails in the optical axis direction.

[0105] According to this embodiment, since each guide section is provided with two guide rails, the movement accuracy of the lens assembly can be ensured even if one guide rail is twisted, through the other guide section.

[0106] Furthermore, according to this embodiment, each guide portion has two guide rails, so that even if the rolling member (described later) experiences friction on one guide rail, the rolling transmission can proceed smoothly on the other guide rail, thus ensuring the driving force.

[0107] The first guide rail 310 can be connected from one surface (or one side) of the first guide portion 300 to another surface (or another side). Preferably, the first guide rail 310 can be formed to extend from the first guide portion 300 along the optical axis direction.

[0108] The second guide rail 410 can be connected from one surface (or one side) of the second guide portion 400 to another surface (or another side). The second guide rail 410 can be formed to extend from the second guide portion 400 along the optical axis direction.

[0109] Therefore, the camera actuator according to this embodiment and the camera module including the camera actuator can maintain the alignment state and distance between multiple lens groups by solving the problem of lens decentering or tilting during zooming, and can solve reliability problems such as changes in viewing angle or blurring of focus.

[0110] Specifically, according to this embodiment, the first guide portion 300 includes a first-first guide rail 311 and a first-second guide rail 312, and correspondingly, the alignment accuracy can be improved by guiding the movement of the second lens assembly 700 by the first-first guide rail 311 and the first-second guide rail 312. Furthermore, according to this embodiment, the second guide portion 400 includes a second-first guide rail 411 and a second-second guide rail 412, and correspondingly, the alignment accuracy can be improved by guiding the movement of the third lens assembly 800 by the second-first guide rail 411 and the second-second guide rail 412.

[0111] Furthermore, according to this embodiment, since each guide portion has two guide rails, the distance of the rolling component, which will be described later, can be maximized. Therefore, this embodiment can increase the driving force used to move the second lens assembly 700 and the third lens assembly 800 while preventing magnetic field interference, thereby preventing the lens assemblies from tilting in a stationary or moving state.

[0112] The first guide portion 300 may include a first guide protrusion 330 extending in a lateral direction perpendicular to the extension direction of the first guide rail 310. For example, the first guide rail 310 may extend along the z-axis, and the first guide protrusion 330 may extend from one side of the first guide rail 310 along the x-axis.

[0113] A first connecting hole 340 may be formed on the first guide protrusion 300. Multiple first connecting holes 340 may be formed on the first guide protrusion 300. For example, the first connecting holes 340 may include a first-first connecting hole 341 and a first-second connecting hole 342, which are spaced apart along the y-axis on the first guide protrusion 300. The first-first connecting hole 341 and the first-second connecting hole 342 may have different shapes. For example, the first-first connecting hole 341 may be circular, and the first-second connecting hole 342 may be elliptical.

[0114] The second guide portion 400 may include a second guide protrusion 430 extending in a lateral direction perpendicular to the extension direction of the second guide rail 410. For example, the second guide rail 410 may extend in the z-axis direction, and the second guide protrusion 430 may extend from one side of the second guide rail 410 in the x-axis direction.

[0115] A second connecting hole 440 may be formed on the second guide protrusion 400. Multiple second connecting holes 440 may be formed on the second guide protrusion 400. For example, the second connecting holes 440 may include a second-first connecting hole 441 and a second-second connecting hole 442, which are spaced apart along the y-axis on the second guide protrusion 400. The second-first connecting hole 441 and the second-second connecting hole 442 may have different shapes. For example, the second-first connecting hole 441 may be elliptical, and the second-second connecting hole 442 may be circular.

[0116] In this case, the adjacent connecting holes in the first connecting hole 340 and the second connecting hole 440 can have different shapes. For example, the first-first connecting hole 341 of the first connecting hole 340 can have a circular shape, and the second-first connecting hole 441 of the second connecting hole 440 adjacent to the first-first connecting hole 341 can have an elliptical shape. For example, the first-second connecting hole 342 of the first connecting hole 340 can have an elliptical shape, and the second-second connecting hole 442 of the second connecting hole 440 adjacent to the first-second connecting hole 342 can have a circular shape.

[0117] Furthermore, the connecting holes in the first connecting hole 340 and the second connecting hole 440, which are positioned diagonally opposite to each other, can have the same shape. For example, the first-first connecting hole 341 of the first connecting hole 340 can be circular, and the second-second connecting hole 442 of the second connecting hole 440, positioned diagonally opposite to the first-first connecting hole, can also be circular. Alternatively, the first-second connecting hole 342 of the first connecting hole 340 can be elliptical, and the second-first connecting hole 441 of the second connecting hole 440, positioned diagonally opposite to the first-second connecting hole, can also be elliptical. Here, a connecting hole with a circular shape can be referred to as a regular hole, and a connecting hole with an elliptical shape can be referred to as an elongated hole.

[0118] When the first guide portion 300 / second guide portion 400 is connected to the base 100, the first-first connecting hole 341 and the second-second connecting hole 442, which are regular holes with a circular shape, can securely connect the first guide portion 300 to the base 100. Furthermore, when the first guide portion 300 / second guide portion 400 is connected to the base 100, the first-second connecting hole 342 and the second-first connecting hole 441, which are elongated holes with an elliptical shape, can prevent rotation in the x-axis direction while covering minor assembly tolerances occurring along the y-axis. Therefore, the first-second connecting hole 342 and the second-first connecting hole 441, which are elongated holes with an elliptical shape, can have a shape that extends along the y-axis compared to the first-first connecting hole 341 and the second-second connecting hole 442.

[0119] For example, the diameters of the first-second connecting hole 342 and the second-first connecting hole 441 in the x-axis direction can be the same as the diameters of the first-first connecting hole 341 and the second-second connecting hole 442 in the x-axis direction. Furthermore, the diameters of the first-second connecting hole 342 and the second-first connecting hole 441 in the y-axis direction can be larger than the diameters of the first-first connecting hole 341 and the second-second connecting hole 442 in the y-axis direction.

[0120] Meanwhile, the first guide portion 300 according to this embodiment may include a plurality of recesses for specifying the flow path of the adhesive member (not shown). Correspondingly, the second guide portion 400 may include a plurality of recesses for specifying the flow path of the adhesive member (not shown). The adhesive member may be a bonding member applied when the first guide portion 300 / second guide portion 400 is connected to the base 100.

[0121] For example, according to this embodiment, the first guide portion 300 may include a first recess 391 formed around the first-first connecting hole 341. The first recess 391 may have a shape corresponding to the first-first connecting hole 341. The size of the first recess 391 may be larger than the size of the first-first connecting hole 341. For example, the width of the first recess 391 in the x-axis direction may be larger than the width of the first-first connecting hole 341 in the x-axis direction. For example, the width of the first recess 391 in the y-direction may be larger than the width of the first-first connecting hole 341 in the y-direction. For example, the first-first connecting hole 341 may be formed in the first recess 391.

[0122] When the first lens assembly 600 is coupled to the first guide portion 300, the first-first recess 391 can specify the flow path of the adhesive member (not shown) applied around the first-first coupling hole 341. For example, the first-first recess 391 can act as a dam to prevent the adhesive member (not shown) applied around the first-first coupling hole 341 from overflowing. For example, without the first-first recess 391 formed, the adhesive member (not shown) may overflow during the process of coupling the first lens assembly 600 to the first guide portion 300, and therefore, the adhesive member (not shown) may move toward the first guide rail 310 of the first guide portion 300. Furthermore, the adhesive member (not shown) that has moved toward the first guide rail 310 may interfere with the movement of the second lens assembly 700, and therefore, problems may occur with the operational reliability of the first camera actuator 1000. Therefore, in this embodiment, the first-first recess 391 is formed around the first-first coupling hole 341 to prevent the adhesive member (not shown) from overflowing.

[0123] Furthermore, the first guide portion 300 of this embodiment may include a first and second recess 392 formed around the first and second connecting hole 342. The first and second recesses 392 may have a shape corresponding to the first and second connecting hole 342. The size of the first and second recesses 392 may be larger than the size of the first and second connecting hole 342. For example, the width of the first and second recesses 392 in the x-axis direction may be greater than the width of the first and second connecting hole 342 in the x-axis direction. For example, the width of the first and second recesses 392 in the y-direction may be greater than the width of the first and second connecting hole 342 in the y-direction. For example, the first and second connecting hole 342 may be formed in the first and second recesses 392.

[0124] When the first lens assembly 600 is coupled to the first guide portion 300, the first-second recess 392 can specify the flow path of the adhesive member (not shown) applied around the first-second coupling hole 342. For example, the first-second recess 392 can act as a dam to prevent the adhesive member (not shown) applied around the first-second coupling hole 342 from overflowing.

[0125] Furthermore, the first guide portion 300 of this embodiment may include first-third recesses 393. The first-third recesses 393 may have a shape extending along the y-axis from the first guide portion 300. The first-third recesses 393 may be formed between the first connecting hole 340 and the first guide rail 310. For example, the first-third recesses 393 may be formed to extend along the y-axis between the first connecting hole 340 and the first guide rail 310. The first-third recesses 393 may further prevent adhesive members (not shown) from overflowing from the first-first recesses 391 or the first-second recesses 392. For example, the interior of the first guide portion 300 (particularly the first guide rail) may be the part that plays the most important role in the operational reliability of the first camera actuator 1000. In this case, even with the first-first recesses 391 and the first-second recesses 392 formed, overflow of adhesive members (not shown) may still occur. Therefore, this embodiment can also prevent the adhesive member (not shown) from flowing into the interior of the first guide portion 300, and in particular, prevent the adhesive member (not shown) from flowing into the first guide rail 310.

[0126] In this embodiment, the first guide portion 300 forms a recess surrounding the first connecting hole 340 to primarily prevent the adhesive member (not shown) from overflowing, and forms a recess located between the first connecting hole 340 and the first guide rail 310 to secondarily prevent the adhesive member (not shown) from overflowing. Therefore, this embodiment can fundamentally prevent the adhesive member (not shown) from flowing toward the interior of the first guide portion 300 (or toward the first guide rail), thereby improving operational reliability.

[0127] Furthermore, according to this embodiment, the second guide portion 400 may include a second-first recess 491 formed around the second-first connection hole 441. The second-first recess 491 may have a shape corresponding to the second-first connection hole 441. The size of the second-first recess 491 may be larger than the size of the second-first connection hole 441. For example, the width of the second-first recess 491 in the x-axis direction may be greater than the width of the second-first connection hole 441 in the x-axis direction. For example, the width of the second-first recess 491 in the y-direction may be greater than the width of the second-first connection hole 441 in the y-direction. For example, the second-first connection hole 441 may be formed in the second-first recess 491.

[0128] When the first lens assembly 600 is coupled to the second guide portion 400, the second-first recess 491 can specify the flow path of the adhesive member (not shown) applied around the second-first coupling hole 441. For example, the second-first recess 491 can act as a dam to prevent the adhesive member (not shown) applied around the second-first coupling hole 441 from overflowing. For example, without the second-first recess 491 formed, the adhesive member (not shown) may overflow during the process of coupling the first lens assembly 600 to the second guide portion 400, and therefore, the adhesive member (not shown) may move toward the second guide rail 410 of the second guide portion 400. Furthermore, the adhesive member (not shown) that has moved toward the second guide rail 410 can interfere with the movement of the third lens assembly 800, and therefore, problems may occur with the operational reliability of the first camera actuator 1000. Therefore, in this embodiment, the second-first recess 491 is formed around the second-first coupling hole 441 to prevent the adhesive member (not shown) from overflowing.

[0129] Furthermore, the second guide portion 400 of this embodiment may include a second-second recess 492 formed around the second-second connection hole 442. The second-second recess 492 may have a shape corresponding to the second-second connection hole 442. The size of the second-second recess 492 may be larger than the size of the second-second connection hole 442. For example, the width of the second-second recess 492 in the x-axis direction may be greater than the width of the second-second connection hole 442 in the x-axis direction. For example, the width of the second-second recess 492 in the y-direction may be greater than the width of the second-second connection hole 442 in the y-direction. For example, the second-second connection hole 442 may be formed in the second-second recess 492.

[0130] When the first lens assembly 600 is coupled to the second guide portion 400, the second-second recess 492 can specify the flow path of the adhesive member (not shown) applied around the second-second connection hole 442. For example, the second-second recess 492 can act as a dam to prevent the adhesive member (not shown) applied around the second-second connection hole 442 from overflowing.

[0131] Furthermore, the second guide portion 400 of this embodiment may include a second-third recess 493. The second-third recess 493 may have a shape extending from the second guide portion 400 along the y-axis direction. The second-third recess 493 may be formed between the second connecting hole 440 and the second guide rail 410. For example, the second-third recess 493 may be formed to extend along the y-axis direction between the second connecting hole 440 and the second guide rail 410. The second-third recess 493 may further prevent adhesive members (not shown) from overflowing from the second-first recess 491 or the second-second recess 492. For example, the interior of the second guide portion 400 (especially the second guide rail) may be the part that plays the most important role in the operational reliability of the first camera actuator 1000. In this case, even with the second-first recess 491 and the second-second recess 492 formed, overflow of adhesive members (not shown) may occur. Therefore, this embodiment may also prevent adhesive members (not shown) from flowing into the interior of the second guide portion 400, and in particular prevent adhesive members (not shown) from flowing into the second guide rail 410.

[0132] In this embodiment, the second guide portion 400 forms a recess surrounding the second coupling hole 440 to primarily prevent the adhesive member (not shown) from overflowing, and forms a recess located between the second coupling hole 440 and the second guide rail 410 to secondarily prevent the adhesive member (not shown) from overflowing. Therefore, this embodiment can fundamentally prevent the adhesive member (not shown) from flowing toward the interior of the second guide portion 400 (or toward the first guide rail), thereby improving operational reliability.

[0133] Meanwhile, the first guide rail 310 of the first guide portion 300 may include multiple guide rails with different shapes. That is, as described above, the first guide rail 310 may include a first-first guide rail 311 and a first-second guide rail 312.

[0134] Furthermore, the first guide rail 311 may have a first shape. Furthermore, the first and second guide rails 312 may have a second shape different from the first shape.

[0135] Furthermore, the second guide rail 410 of the second guide portion 400 may include multiple guide rails with different shapes. That is, as described above, the second guide rail 410 may include a second-first guide rail 411 and a second-second guide rail 412.

[0136] Furthermore, the second-first guide rail 411 may have a second shape. Furthermore, the second-second guide rail 412 may have a first shape different from the second shape.

[0137] Here, the first shape of the first-first guide rail 311 can be a 'V' shape. Furthermore, the first shape of the second-second guide rail 412 can be a 'V' shape. Additionally, the second shapes of the first-second guide rail 312 and the second-second guide rail 412 can be 'L' shapes. However, this embodiment is not limited to this, and the first and second shapes can have different shapes other than 'V' and 'L' shapes.

[0138] In this configuration, the guide rails 310 and 410 that have the same shape can be positioned diagonally. For example, the first-first guide rail 311 of the first guide rail 310 and the second-second guide rail 412 of the second guide rail 410 with a first shape can be positioned diagonally. Similarly, the first-second guide rail 312 of the first guide rail 310 with a second shape and the second-first guide rail 411 of the second guide rail 410 can be positioned diagonally.

[0139] Meanwhile, one or more first ribs 350 may be formed inside the first support portion 320 of the first guide portion 300. For example, the first rib 350 may be formed between the first-first guide rail 311 and the first-second guide rail 312 of the first guide portion 300. The first rib 350 can improve the accuracy of dimensional management of the first-first guide rail 311 and the first-second guide rail 312.

[0140] In the comparative examples, shrinkage occurs as the amount or thickness of the injection molding increases, making dimensional management difficult and resulting in weakened strength when the amount of injection molding is reduced.

[0141] In contrast, in this embodiment, the first rib 350 is disposed inside the first support portion 320, and strength can be ensured while reducing the amount of injection molding and improving the accuracy of dimensional management. Furthermore, one or more second ribs (not shown) may be formed inside the second support portion 420 of the second guide portion 400.

[0142] Furthermore, the second guide portion 400 may include a guide rail portion recess 470 and a support portion recess 480. For example, a second guide rail 410 is formed inside the second guide portion 400. Additionally, the guide rail portion recess 470 may be formed on the exterior of the second guide rail 410 of the second guide portion 400. Furthermore, the support portion recess 480 may be formed on the exterior of the second support portion 420 of the second guide portion 400. The guide rail portion recess 470 and the support portion recess 480 prevent shrinkage by reducing the injection volume of the second guide portion 400 and ensure strength while improving dimensional control accuracy.

[0143] Furthermore, the outer portion of the first guide portion 300 corresponding to the second guide portion 400 may also have a guide rail portion recess (not shown) and a support portion recess (not shown).

[0144] Meanwhile, the first guide portion 300 may include a first guide protrusion 360, which is formed in a region opposite to the first connecting hole 340. Specifically, the first guide portion 300 may include a first-first guide protrusion 361 and a first-second guide protrusion 362, where the first-first guide protrusion 361 is formed in a region opposite to the first-first connecting hole 341, and the first-second guide protrusion 362 is formed in a region opposite to the first-second connecting hole 342. The first guide protrusion 361 and the second guide protrusion 362 can be fitted into a connecting recess in the third sidewall 100c of the base 100, which will be described later.

[0145] Furthermore, the second guide portion 400 may include a second guide protrusion 460, which is formed in a region opposite to the second connecting hole 440. Specifically, the second guide portion 400 may include a second-first guide protrusion 461 and a second-second guide protrusion 462, where the second-first guide protrusion 461 is formed in a region opposite to the second-first connecting hole 441, and the second-second guide protrusion 462 is formed in a region opposite to the second-second connecting hole 442. The second-first guide protrusion 461 and the second-second guide protrusion 462 can be fitted into a connecting recess in the third sidewall 100c of the base 100, which will be described later.

[0146] <Second lens assembly, third lens assembly, first rolling member and second rolling member>

[0147] The second lens assembly 700, the third lens assembly 800, the first rolling member, and the second rolling member will be described in detail below.

[0148] Figure 7 yes Figure 3 A perspective view of the second lens assembly shown. Figure 8 It is a series of parts that are omitted. Figure 7 A perspective view of the second lens assembly shown. Figure 9 yes Figure 3 A perspective view of the third lens assembly shown. Figure 10 It is a series of parts that are omitted. Figure 9 A perspective view of the third lens assembly shown.

[0149] For now, refer to Figure 3This embodiment may include a second lens assembly 700 that moves along the first guide portion 300 and a third lens assembly 800 that moves along the second guide portion 400.

[0150] Reference Figure 7 and Figure 8 The second lens assembly 700 may include a second lens barrel 710 and a first drive portion housing 720. A second lens group 730 is disposed on the second lens barrel 710, and a portion of the drive portion 200 (specifically, the first magnet and the first yoke of the first drive portion) is disposed within the first drive portion housing 720. In this case, the second lens barrel 710 and the first drive portion housing 720 may be the first housing. Furthermore, the first housing may have a barrel shape or a barrel-like form. The first drive portion housing 720 may be a first magnet / yoke arrangement portion of the first drive portion 220, where the first magnet 222 and the first yoke 223 constituting the drive portion 200 are disposed, but it is not limited to this, and may be an arrangement portion of the first coil 221 according to this embodiment.

[0151] Reference Figure 8 and Figure 9 The third lens assembly 800 includes a third lens barrel 810 and a second drive portion housing 820. A third lens group 830 is disposed on the third lens barrel 810, and a portion of the drive portion 200 (specifically, the second magnet and the second yoke of the second drive portion) is disposed in the second drive portion housing 820. In this case, the third lens barrel 810 and the second drive portion housing 820 can both be the second housing. Furthermore, the second housing can have a barrel or a barrel shape. The second drive portion housing 820 can be a second magnet / yoke arrangement portion of the second drive portion 230 where the second magnet 232 and the second yoke 233 constituting the drive portion 200 are disposed, but it is not limited to this, and can also be an arrangement portion of the second coil 231 of the second drive portion 230 according to this embodiment.

[0152] The second lens assembly 700 corresponds to the two first guide rails 310 of the first guide portion 300, and the third lens assembly 800 corresponds to the two second guide rails 410 of the second guide portion 400.

[0153] One embodiment may include a first rolling member 740 and a second rolling member 840. The first rolling member 740 may include a single ball or multiple balls. The second rolling member 840 may include a single ball or multiple balls.

[0154] This embodiment may include a first rolling member 740 disposed between the second lens assembly 700 and the first guide portion 300. Furthermore, this embodiment may include a second rolling member 840 disposed between the third lens assembly 800 and the second guide portion 400.

[0155] The first rolling member 740 may include one or more first balls 741 disposed on the upper side of the first drive portion housing 720 and one or more second balls 742 disposed on the lower side of the first drive portion housing 720. The first balls 741 can move along a first-first guide rail 311, which is one of the first guide rails 310 of the first guide portion 300. Furthermore, the second balls 742 can move along a first-second guide rail 312, which is the other of the first guide rails 310 of the first guide portion 300. The first balls 741 correspond to the first-first guide rail 311, and the first balls 741 may include first-first balls 741a and first-second balls 741b spaced apart from each other by a predetermined distance. Furthermore, the second balls 742 correspond to the first-second guide rail 312, and the second balls 742 may include second-first balls 742a and second-second balls 742b spaced apart from each other by a predetermined distance.

[0156] The second rolling member 840 may include one or more third balls 841 disposed on the upper side of the second drive portion housing 820 and one or more fourth balls 842 disposed on the lower side of the second drive portion housing 820. The third balls 841 may move along a second-first guide rail 411, which is one of the second guide rails 410 of the second guide portion 400. Furthermore, the fourth balls 842 may move along a second-second guide rail 412, which is the other of the second guide rails 410 of the second guide portion 400. The third balls 841 correspond to the second-first guide rail 411 and may include third-first balls 841a and third-second balls 841b spaced apart from each other by a predetermined distance. Furthermore, the fourth balls 842 may include fourth-first balls 842a and fourth-second balls 842b corresponding to the second-second guide rail 412 and spaced apart from each other by a predetermined distance.

[0157] The camera actuator according to this embodiment, and the camera module including the camera actuator, can maintain the alignment and distance between multiple lens groups by solving the problem of lens eccentricity or tilt during zooming, and can improve image quality by solving problems such as changes in viewing angle or blurring of focus.

[0158] For example, in this embodiment, the first guide portion 300 includes a first-first guide rail and a first-second guide rail, and the first-first guide rail and the first-second guide rail guide the movement of the second lens assembly 700. Therefore, when the second lens assembly 700 moves, the first guide portion 300 can improve the alignment accuracy between the optical axis and the third lens assembly 800.

[0159] Meanwhile, the second lens assembly 700 may include a first ball recess 750, and a first rolling member 740 disposed in the first ball recess 750. Furthermore, the third lens assembly 800 may include a second ball recess 850, and a second rolling member 840 disposed in the second ball recess 850.

[0160] There can be multiple first ball recesses 750 and second ball recesses 850. For example, the number of first ball recesses 750 may correspond to the number of balls constituting the first rolling member 740. Similarly, the number of second ball recesses 850 may correspond to the number of balls constituting the second rolling member 840. For example, the first ball recesses 750 may include four recesses spaced apart from each other to correspond to the first rolling member 740. Likewise, the second ball recesses 850 may include four recesses spaced apart from each other to correspond to the second rolling member 840.

[0161] In this case, the distance between two of the four recesses constituting the first ball recess 750 can be greater than the thickness of the second lens barrel 710 based on the optical axis direction.

[0162] Furthermore, the distance between two of the four recesses constituting the second ball recess 850 can be greater than the thickness of the third lens barrel 810 based on the optical axis direction.

[0163] In one embodiment, the first ball recess 750 of the second lens assembly 700 may have a V-shape. Furthermore, the second ball recess 850 of the third lens assembly 800 may also have a V-shape. However, the shapes of the first ball recess 750 and the second ball recess 850 are not limited thereto, and the first ball recess 750 and the second ball recess 850 may have a U-shape or a shape that contacts the ball at two or three points.

[0164] Furthermore, a first drive portion arrangement recess 770 may be formed in the region between the first ball recesses 750 in the second lens assembly 700. Furthermore, a second drive portion arrangement recess 870 may be formed in the region between the second ball recesses 850 in the third lens assembly 800.

[0165] Figure 11 It is based on Figure 2 The image shows a cross-sectional view of the camera module in the x-axis direction of the embodiment shown.

[0166] Reference Figure 11 The first guide portion 300 and the second guide portion 400 can be inserted into and disposed in the base 100 respectively, and the second lens assembly 700 can be disposed corresponding to the first guide portion 300, and the third lens assembly 800 can be disposed corresponding to the second guide portion 400.

[0167] Furthermore, the first rolling member 740 can be inserted between the first guide rail 310 of the first guide portion 300 and the second lens assembly 700. Additionally, the second rolling member 840 can be inserted between the second guide rail 410 of the second guide portion 400 and the third lens assembly 800.

[0168] The second lens assembly 700 can move along the first guide rail 310 of the first guide portion 300 in the optical axis direction via the first rolling member 740. Furthermore, the third lens assembly 800 can move along the second guide rail 410 of the second guide portion 400 in the optical axis direction via the second rolling member 840.

[0169] At the same time, this embodiment has the function of preventing the second lens assembly 700 and the second lens assembly 700 from being inserted into the base 100 in opposite directions. For example, this embodiment can solve the following mis-insertion problem: the third lens assembly 800 is disposed at the position where the second lens assembly 700 is to be disposed, and the second lens assembly 700 is disposed at the position where the third lens assembly 800 is to be disposed.

[0170] For example, the upper and lower widths of the second lens assembly 700 can be a first width A10. Furthermore, the upper and lower widths of the third lens assembly 800 can be a second width B10, different from the first width A10. Therefore, this embodiment allows for improved reliability by sizing the second lens assembly 700 and the third lens assembly 800 as described above so that the third lens assembly 800 is not inserted into the area where the second lens assembly 700 is to be installed.

[0171] Figure 12 This is an example diagram of driving the second lens assembly according to an embodiment.

[0172] Reference Figure 12 The interaction between the first magnet 222 and the first coil 221 of the first drive portion 220 in the camera module according to this embodiment will be described.

[0173] like Figure 12As shown, the magnetization method of the first magnet 222 of the first camera actuator 1000 according to the embodiment can be a perpendicular magnetization method. For example, in this embodiment, the N pole 222N and S pole 222S of the first magnet 222 can be magnetized to face the first coil 221.

[0174] Therefore, the N pole 222N and S pole 222S of the first magnet 222 can be respectively set to correspond to the region in the first coil 221 where the current flows along the y-axis direction perpendicular to the ground.

[0175] Then, a magnetic force DM is applied from the N pole 222N of the first magnet 222 in the direction opposite to the x-axis (the direction of the magnetic force can be the positive or negative direction shown in the figure). When the current DE flows in the region of the first coil 221 corresponding to the N pole 222N in the y-axis direction, the electromagnetic force DEM acts in the z-axis direction according to Fleming's left-hand rule.

[0176] Furthermore, in this embodiment, a magnetic force DM is applied from the S pole 222S of the first magnet 222 along the x-axis direction. When the current DE flows in the first coil 221 corresponding to the S pole 222S in the opposite direction to the y-axis and perpendicular to the ground, the electromagnetic force DEM acts in the z-axis direction (the direction of the electromagnetic force can be the positive or negative direction shown in the figure) according to Fleming's left-hand rule.

[0177] In this configuration, the first coil 221 of the first drive section 220 is fixed, and therefore, the second lens assembly 700—acting as a mover for the first magnet 222 provided with the first drive section 220—can move back and forth along the first guide rail 310 of the first guide section 300 in a direction parallel to the z-axis under the action of the electromagnetic force DEM, depending on the current direction. In this configuration, the electromagnetic force DEM can be controlled in a manner proportional to the current DE applied to the first coil 221.

[0178] Similarly, an electromagnetic force DEM is generated between the second coil 231 and the second magnet 232 in the second drive portion 230 of the camera module according to this embodiment, so that the third lens assembly 800, on which the second magnet 232 is provided, can move along the second guide rail 410 of the second guide portion 400 in a direction parallel to the optical axis.

[0179] <First Lens Assembly>

[0180] Figure 13 This is a perspective view of the first lens assembly according to the embodiment, and Figure 14 The first lens group is omitted. Figure 13 A three-dimensional view of the first lens assembly.

[0181] Reference Figure 13The first lens assembly 600 may include a first lens barrel 610 and a first lens group 620.

[0182] In one embodiment, the third lens assembly 800 may have a barrel portion recess 611r formed on the first lens barrel 610. The barrel portion recess 611r can uniformly adjust the thickness of the first lens barrel 610 of the first lens assembly 600 and can improve the accuracy of digital control by reducing the amount of injected material.

[0183] Furthermore, according to this embodiment, the first lens barrel 610 may include a plurality of ribs 630. The plurality of ribs 630 can improve the strength of the first lens barrel 610.

[0184] Furthermore, the plurality of ribs 630 may be stop-joint portions connected to a stop (not shown). For example, each of the plurality of ribs 630 may be connected to a stop (not shown). The stop (not shown) may be disposed between the first lens assembly 600 and the second lens assembly 700 to limit the movement of the second lens assembly 700. For example, when the second lens assembly 700 moves in the direction provided by the first lens assembly 600, the movement of the second lens assembly 700 may be limited by the stop.

[0185] Furthermore, the third lens barrel 610 may include a lens insertion portion 612h, into which the third lens group 620 is inserted. The lens insertion portion 612h may have a hole shape that passes through the third lens barrel 610 in the optical axis direction.

[0186] Meanwhile, the third lens assembly 800 may include multiple connection holes.

[0187] The third lens assembly 800 may include a third connection hole 640 and a fourth connection hole 650.

[0188] The third connecting hole 640 may correspond to the first connecting hole 340 of the first guide portion 300. The third connecting hole 640 may include a third-first connecting hole 641 and a third-second connecting hole 642, which are spaced apart along the y-axis on one side of the third lens barrel 810 of the third lens assembly 800. The third-first connecting hole 641 and the third-second connecting hole 642 may have different shapes. For example, the third-first connecting hole 641 may be circular, and the third-second connecting hole 642 may be elliptical. The third connecting hole 640 may be aligned with the first connecting hole 340 in the optical axis direction. For example, the center of the third connecting hole 640 may be aligned with the center of the first connecting hole 340 in the optical axis direction. A protrusion of the base 100, described later, may be inserted into the third connecting hole 640.

[0189] The fourth connecting hole 650 may correspond to the second connecting hole 440 of the second guide portion 400. The fourth connecting hole 6500 may include a fourth-first connecting hole 651 and a fourth-second connecting hole 652, which are spaced apart along the y-axis on the other side of the third lens barrel 810 of the third lens assembly 800. The fourth-first connecting hole 651 and the fourth-second connecting hole 652 may have different shapes. For example, the fourth-first connecting hole 651 may be formed in an elliptical shape, and the fourth-second connecting hole 652 may be formed in a circular shape.

[0190] In this case, the connecting holes in the third connecting hole 640 and the fourth connecting hole 650 that are adjacent to each other in the x-axis direction can have different shapes. For example, the third-first connecting hole 641 of the third connecting hole 640 has a circular shape, and the fourth-first connecting hole 651 of the fourth connecting hole 650 that is adjacent to the third-first connecting hole in the x-axis direction has an elliptical shape. For example, the third-second connecting hole 642 of the third connecting hole 640 has an elliptical shape, and the fourth-second connecting hole 652 of the fourth connecting hole 650 that is adjacent to the third-second connecting hole in the x-axis direction can have a circular shape.

[0191] Furthermore, the connecting holes in the third connecting hole 640 and the fourth connecting hole 650, positioned diagonally, can have the same shape. For example, the third-first connecting hole 641 of the third connecting hole 640 can be circular, and the fourth-second connecting hole 652 of the fourth connecting hole 650, positioned diagonally to the third-first connecting hole, can also be circular. Alternatively, the third-second connecting hole 642 of the third connecting hole 640 can be elliptical, and the fourth-first connecting hole 651 of the fourth connecting hole 650, positioned diagonally to the third-second connecting hole, can also be elliptical. Here, a connecting hole with a circular shape can be referred to as a regular hole, and a connecting hole with an elliptical shape can be referred to as an elongated hole.

[0192] When the first lens assembly 600 is connected to the base 100, the third-first connection hole 641 and the fourth-second connection hole 652, which are regular holes with circular shapes, can securely connect the first lens assembly 600 to the base 100. Furthermore, when the first lens assembly 600 is connected to the base 100, the third-second connection hole 642 and the fourth-first connection hole 651, which are elongated holes with elliptical shapes, can prevent rotation in the x-axis direction while covering minor assembly tolerances occurring along the y-axis. Therefore, the third-second connection hole 642 and the fourth-first connection hole 651, which are elongated holes with elliptical shapes, can have a shape that extends along the y-axis direction compared to the third-first connection hole 641 and the fourth-second connection hole 652.

[0193] For example, the diameters of the third-second connecting hole 642 and the fourth-first connecting hole 651 in the x-axis direction can be the same as the diameters of the third-first connecting hole 641 and the fourth-second connecting hole 652 in the x-axis direction. Furthermore, the diameters of the third-second connecting hole 642 and the fourth-first connecting hole 651 in the y-axis direction can be larger than the diameters of the third-first connecting hole 641 and the fourth-second connecting hole 652 in the y-axis direction.

[0194] <Base>

[0195] Figure 15 This is a perspective view of the base of the first camera actuator according to the embodiment. Figure 16 yes Figure 15 The front view of the base shown. Figure 17 It is an enlarged view of the area where the connecting protrusions of the base are formed, and Figure 18 This is a cross-sectional view of the base, guide rail portion, and first lens assembly according to the embodiment, in a connected state.

[0196] Reference Figure 3 The first guide portion 300, the second guide portion 400, the second lens assembly 700, and the third lens assembly 800 can be housed in the base 100. Furthermore, the first lens assembly 600 can be spaced apart from the second lens assembly 700 on one side surface of the base 100. Additionally, a fourth lens assembly 900 can be spaced apart from the third lens assembly 800 on the other side surface of the base 100.

[0197] Reference Figures 15 to 18 The base 100 may include multiple sidewalls.

[0198] For example, the base 100 may include a first sidewall 100a, a second sidewall 100b, a third sidewall 100c, and a fourth sidewall 100d. Furthermore, the base 100 may include an upper portion 100e, a lower portion 100f, and a plurality of sidewalls.

[0199] The base 100 may include a first sidewall 100a and a second sidewall 100b corresponding to the first sidewall 100a. For example, the second sidewall 100b may be provided in a direction facing the first sidewall 100a. The first sidewall 100a may include a first opening OA1 and the second sidewall 100b may include a second opening OA2. The first opening OA1 may be an insertion space into which a portion of the drive portion 200 disposed outside the first sidewall 100a of the base 100 is inserted. For example, the circuit board 210 of the drive portion 200 is disposed outside the first sidewall 100a. Furthermore, the first coil 221 of the first drive portion 220 may be disposed on the circuit board 210. In this case, with the circuit board 210 disposed outside the first sidewall 100a of the base 100, the first coil 221 of the first drive portion 220 may be disposed inside the base 100 through the first opening OA1 formed in the first sidewall 100a. Furthermore, the second opening OA2 can be an insertion space into which a portion of the second drive portion 230, located outside the second sidewall 100b of the base 100, is inserted. For example, the circuit board 210 of the drive portion 200 is located outside the second sidewall 100b. In this case, with the circuit board 210 located outside the second sidewall 100b of the base 100, the second coil 231 of the second drive portion 230 can be located inside the base 100 through the second opening OA2 formed in the second sidewall 100b.

[0200] The base 100 may include a third sidewall 100c, which is disposed between the first sidewall 100a and the second sidewall 100b and connects the first sidewall 100a and the second sidewall 100b. The third sidewall 100c may be disposed in a direction perpendicular to the first sidewall 100a and the second sidewall 100b. The first sidewall 100a, the second sidewall 100b and the third sidewall 100c may be integrally injection molded or injection molded separately.

[0201] A connecting protrusion may be formed on the fourth sidewall 100d of the base 100.

[0202] Specifically, a first connecting protrusion 110 and a second connecting protrusion 120 may be formed on the fourth sidewall 100d of the base 100.

[0203] The first connecting protrusion 110 may be a protrusion connected to the first guide portion 300. For example, the first connecting protrusion 110 may correspond to the first connecting hole 340 of the first guide portion 300. Accordingly, the first connecting protrusion 110 may include a first-first connecting protrusion 111 corresponding to the first-first connecting hole 341 of the first guide portion 300 and a first-second connecting protrusion 112 corresponding to the first-second connecting hole 342 of the first guide portion 300. The first connecting protrusion 110 may be a protrusion connected to the first lens assembly 600. For example, the first connecting protrusion 110 may correspond to the third connecting hole 640 of the first lens assembly 600.

[0204] The second connecting protrusion 120 may be a protrusion connected to the second guide portion 400. For example, the second connecting protrusion 120 may correspond to the second connecting hole 440 of the second guide portion 400. Therefore, the second connecting protrusion 120 may include a second-first connecting protrusion 121 corresponding to the second-first connecting hole 441 of the second guide portion 400 and a second-second connecting protrusion 122 corresponding to the second-second connecting hole 442 of the second guide portion 400. Furthermore, the second connecting protrusion 120 may be a protrusion connected to the first lens assembly 600. For example, the second connecting protrusion 120 may correspond to the fourth connecting hole 650 of the first lens assembly 600.

[0205] Meanwhile, the base 100 may include a base recess BR formed around the first connecting protrusion 110 and the second connecting protrusion 120. The base recess BR may be a recess that specifies the flow path of the adhesive member (not shown). When the first guide portion 300 and the second guide recess BR are coupled to the base 100, the adhesive member (not shown) may be an adhesive member applied around the first connecting protrusion 110 and the second connecting protrusion 120.

[0206] For example, this embodiment may include a first base recess 111r formed around the first-first connecting protrusion 111. The first base recess 111r may include a first portion and a second portion extending from the first portion, the first portion having a shape corresponding to the first-first connecting protrusion 111. The first portion and the second portion of the first base recess 111r may be connected to each other. The first portion and the second portion will be described in more detail below.

[0207] Furthermore, the base recess BR according to this embodiment may include a second base recess 112r formed around the first-second connecting protrusion 112. The second base recess 112r may include a first portion and a second portion, the first portion having a shape corresponding to the first-second connecting protrusion 112, and the second portion being connected to and extending from the first portion.

[0208] Furthermore, the base recess BR according to this embodiment may include a third base recess 121r formed around the second-first connecting protrusion 121. The third base recess 121r may include a first portion and a second portion, the first portion having a shape corresponding to the second-first connecting protrusion 121, and the second portion being connected to and extending from the first portion.

[0209] Furthermore, the base recess BR according to this embodiment may include a fourth base recess 122r formed around the second-second connecting protrusion 122. The fourth base recess 122r may include a first portion and a second portion, the first portion having a shape corresponding to the second-second connecting protrusion 122, and the second portion being connected to and extending from the first portion.

[0210] Specifically, the fourth sidewall 100d of the base 100 may include a first region R1 and a second region R2 other than the first region R1, with the first connecting protrusion 110 and the second connecting protrusion 120 disposed in the first region R1. In this case, the first region R1 and the second region R2 may have different heights or different thicknesses. For example, the second region R2 may include a first protruding region P1 and a second protruding region P2 protruding along the optical axis based on the first region R1. That is, the first protruding region P1 and the second protruding region P2 may be formed in the region adjacent to the first region R1 in which the connecting protrusions 110 and 120 are formed. The first region R1 and the second region R2 may be referred to as stepped regions.

[0211] In this case, the base recess BR includes a first portion BR1 formed around the connecting protrusions 110 and 120. The first portion BR1 may have a shape corresponding to the connecting protrusions 110 and 120.

[0212] Here, the base recess BR can be used as a dam for the adhesive member (not shown) even when only the first portion BR1 is included. However, when the base 100 includes only the first portion BR1, it may be difficult to completely prevent the adhesive member (not shown) from penetrating into the receiving space inside the base 100.

[0213] Therefore, this embodiment includes an extension portion extending from the first portion BR1. For example, the base recess BR may include a second-first portion BR2 extending from the first portion BR1 and contacting the first protruding region P1. For example, the base recess BR may include a second-second portion BR3 extending from the first portion BR1 and contacting the second protruding region P2. The second-first portion BR2 and the second-second portion BR3 provide a flow path for the adhesive member (not shown) applied to the first portion BR1, and thus solve the problem of the adhesive member (not shown) overflowing into the base 100.

[0214] Meanwhile, a connecting recess may be formed on the inner surface of the third sidewall 100c of the base 100. The connecting recess may include a first connecting recess 130 corresponding to the first guide portion 300 and a second connecting recess 140 corresponding to the second guide portion 400.

[0215] Specifically, the first connecting recess 130 may be provided on the inner surface of the third sidewall 100c of the base 100, such that the first guiding protrusion 360 of the first guiding portion 300 is fitted thereon. For example, the first connecting recess 130 may include a first-first connecting recess 131 corresponding to the first-first guiding protrusion 361 of the first guiding portion 300 and a first-second connecting recess 132 corresponding to the first-second guiding protrusion 362.

[0216] Furthermore, the second connecting recess 140 may be disposed on the inner surface of the third sidewall 100c of the base 100, such that the second guiding protrusion 460 of the second guiding portion 400 is fitted thereon. For example, the second connecting recess 140 may include a second-first connecting recess 141 and a second-second connecting recess 142, with the second-first guiding protrusion 461 of the second guiding portion 400 fitted and connected to the second-first connecting recess 141, and the second-second guiding protrusion 462 fitted to the second-second connecting recess 142.

[0217] Meanwhile, the base 100 may include a third opening OA3. Specifically, the third opening OA3 may be formed in the lower portion 100f of the base 100. The third opening OA3 may be an insertion portion into which a part of the driver 200 is inserted. For example, the driver portion 200 includes a driver IC 240 disposed on a circuit board 210. Furthermore, the third opening OA3 formed in the lower portion 100f of the base 100 may correspond to the driver IC. For example, the circuit board 210 of the driver portion 200 is disposed on the outer surface of the base 100. Furthermore, the driver IC 240 disposed on the circuit board 210 may be disposed within the internal receiving space of the base 100 through the third opening OA3.

[0218] <Driver Section>

[0219] Figure 19a , Figure 19b , Figure 20a and Figure 20b This is a perspective view illustrating the driving section according to an embodiment. Figure 21a This is a perspective view of a portion of the first drive section shown in Figure 19. Figure 21b This is a detailed perspective view of the first magnetic yoke of the first driving portion according to the embodiment. Figure 21c This is a bottom perspective view of the first magnetic yoke in this embodiment. Figure 21d This is a perspective view of some components of the first drive portion according to the first additional embodiment, and Figure 21e This is a perspective view of some components of the first drive section according to the second additional embodiment.

[0220] Reference Figures 19a to 21e The driving section 200 may include a circuit board 210, a first driving section 220, and a second driving section 230. The first driving section 220 may include a coil, a magnet, and a yoke. Furthermore, the second driving section 230 may include a coil, a magnet, and a yoke. Additionally, each of the first driving section 220 and the second driving section 230 may include a position sensor for sensing the position of the magnet and the position of the second lens assembly 700 or the third lens assembly 800.

[0221] The circuit board 210 may be disposed around the outer surface of the base 100. For example, the circuit board 210 may be disposed around the first sidewall 100a, the second sidewall 100b and the lower portion 100f of the base 100.

[0222] For example, the circuit board 210 may include a first substrate region 210a and a second substrate region 210b, with the first substrate region 210a disposed outside the first sidewall 100a of the base 100 and the second substrate region 210b disposed outside the second sidewall 100b. Furthermore, the circuit board 210 may include a third substrate region 210c located between the first substrate region 210a and the second substrate region 210b. The third substrate region 210c may be disposed on the outer surface of the lower portion 100f. That is, the circuit board 210 in this embodiment may have an "U" shape.

[0223] The first substrate region 210a and the second substrate region 210b can be arranged parallel to each other. That is, the inner surfaces of the first substrate region 210a and the inner surfaces of the second substrate region 210b can face each other at a predetermined distance apart. Furthermore, the third substrate region 210c can connect the first substrate region 210a and the second substrate region 210b. Accordingly, the third substrate region 210c can be configured to be perpendicular to the first substrate region 210a and the second substrate region 210b, respectively.

[0224] The circuit board 210 can be connected to a predetermined power supply unit (not shown) for applying power to the coil portion disposed on the circuit board 210.

[0225] The circuit board 210 may include a circuit board with wiring patterns that can make electrical connections, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), and a rigid-flexible printed circuit board (Rigid-Flexible PCB).

[0226] A portion of the first drive section 220 and a portion of the second drive section 230 may be disposed on the circuit board 210.

[0227] For example, the first drive section 220 may include a first coil 221, a first magnet 222, a first yoke 223, and a first position sensor 224.

[0228] Furthermore, the first coil 221 and the first position sensor 224 constituting the first drive portion 220 can be disposed on the first substrate region 210a of the circuit board 210. The first position sensor 224 can be disposed on the inner surface of the first coil 221 on the first substrate region 210a.

[0229] In addition, the second drive section 230 may include a second coil 231, a second magnet 232, a second yoke 233, and a second position sensor 234.

[0230] Furthermore, the second coil 231 and the second position sensor 234 constituting the second drive portion 230 can be disposed on the second substrate region 210b of the circuit board 210. The second position sensor 234 can be disposed on the inner surface of the second coil 231 on the second substrate region 210b of the circuit board 210.

[0231] The first coil 221 of the first driving portion 220 can be disposed within the receiving space of the base 100 through the first opening OA1 of the base 100 while it is disposed in the first substrate region 210a of the circuit board 210. Therefore, the first coil 221 of the first driving portion 220 can be disposed facing the first magnet 222 disposed on the second lens assembly 700.

[0232] Furthermore, the second coil 231 of the second drive portion 230 can be disposed within the receiving space of the base 100 through the second opening OA2 of the base 100 while it is disposed in the second substrate region 210b of the circuit board 210. Therefore, the second coil 231 of the second drive portion 230 can be configured to face the second magnet 232 disposed on the third lens assembly 800.

[0233] The first magnet 222 of the first drive section 220 is disposed on the second lens assembly 700. Furthermore, the second magnet 232 of the second drive section 230 is disposed on the third lens assembly 800.

[0234] Therefore, when current is applied to the first coil 221 provided on the circuit board 210, this embodiment allows the second lens assembly 700 to move along the optical axis direction corresponding to the direction and intensity of the applied current under the action of the electromagnetic force between the first coil 221 and the first magnet 222.

[0235] Furthermore, when current is applied to the second coil 231 provided on the circuit board 210, this embodiment allows the third lens assembly 800 to move along the optical axis direction corresponding to the direction and intensity of the applied current under the action of the electromagnetic force between the second coil 231 and the second magnet 232.

[0236] To this end, this embodiment includes a driver IC 240 disposed on a circuit board 210 and controlling the first drive section 220 and the second drive section 230. The driver IC 240 can provide control signals to the first drive section 220 and the second drive section 230. In this case, the control signals may include the intensity and direction of the current applied to the first coil 221 constituting the first drive section 220. Furthermore, the control signals may include the intensity and direction of the current applied to the second coil 231 constituting the second drive section 230.

[0237] This embodiment allows the driver IC 240 to be disposed on the circuit board 210. Furthermore, in this embodiment, the driver IC 240 is disposed on the third substrate region 210c of the circuit board 210.

[0238] In other words, the driver IC 240 is electrically connected to the first position sensor 224 and the second position sensor 234. Specifically, the driver IC 240 can receive a first sensing signal from the first position sensor 224 and output a first control signal to the first coil 221 based on this signal. Furthermore, the driver IC 240 can receive a second sensing signal from the second position sensor 234 and output a second control signal to the second coil 231 based on this signal.

[0239] In this comparative example, the driver IC is not mounted on the circuit board where the driver 200 is mounted, but rather on the sensor substrate (not shown) where the image sensor is mounted. Furthermore, when the driver IC 240 is mounted on the sensor substrate, the image sensor, in addition to the driver IC 240, is also mounted on the sensor substrate, and therefore size constraints are stringent.

[0240] Furthermore, in the comparative example, the driver IC is disposed on either the first substrate region or the second substrate region of the circuit board. In this case, the length of the connection line between the driver IC and the position sensor increases, and therefore, the connection line has a structure susceptible to noise. For example, when the driver IC is disposed in the first substrate region of the circuit board, although the distance between the driver IC and the first position sensor 224 can be reduced, the distance between the driver IC and the second position sensor increases accordingly, and therefore, the problem is that the sensing accuracy is reduced because the sensing information of the second position sensor includes noise.

[0241] Therefore, the driver IC 240 in this embodiment is disposed between the first position sensor 224 and the second position sensor 234.

[0242] Specifically, in this embodiment, the distance between the driver IC 240 and the first position sensor 224 corresponds to the distance between the driver IC 240 and the second position sensor 234.

[0243] Therefore, the driver IC 240 can be disposed in the third substrate region 210c of the circuit board 210. That is, in this embodiment, the driver IC 240 is disposed on the third substrate region 210c of the circuit board 210, and not on the first substrate region 210a and the second substrate region 210b. Therefore, in this embodiment, the problem of increased noise affecting specific sensors in the first position sensor 224 and the second position sensor 234 can be improved, thereby improving sensing accuracy.

[0244] In this case, the distance between the driver IC 240 and the first position sensor 224 can correspond to the distance of the circuit pattern.

[0245] Specifically, circuit board 210 includes a first signal line 241, which corresponds to a circuit pattern connecting driver IC 240 and first position sensor 224. Furthermore, circuit board 210 includes a second signal line 242, which corresponds to a circuit pattern connecting driver IC 240 and second position sensor 234.

[0246] In this case, the length of the first signal line 241 can correspond to the length of the second signal line 242. Here, "lengths corresponding" can mean that the lengths of the first and second signal lines are equal, but is not limited to this. For example, "lengths corresponding" can mean that the length of the second signal line is within a preset tolerance relative to the length of the first signal line. This tolerance can be ±5%. For example, in this embodiment, the length of the first signal line 241 can be in the range of 95% to 105% of the length of the second signal line 242. Conversely, in this embodiment, the length of the second signal line 242 can be in the range of 95% to 105% of the length of the first signal line 241.

[0247] As described above, the camera actuator according to the embodiment and the camera module including the camera actuator can improve operational reliability. Specifically, the camera actuator and camera module according to this embodiment include a circuit board. Furthermore, the circuit board is provided with a first driving portion for driving a second lens assembly and a second driving portion for driving a third lens assembly. The first driving portion includes a first position sensor for sensing the position of the second lens assembly, and the second driving portion includes a second position sensor for sensing the position of the third lens assembly. Furthermore, the circuit board includes a driver IC that controls the first and second drivers. In this case, the driver IC in this embodiment is disposed on the circuit board together with the first and second position sensors. Furthermore, the driver IC in this embodiment is disposed between the first and second position sensors on the circuit board. Specifically, a first distance between the first position sensor and the driver IC on the circuit board corresponds to a second distance between the second position sensor and the driver IC. Specifically, the length of the first signal line connected between the first position sensor and the driver IC on the circuit board corresponds to the length of the second signal line connected between the second position sensor and the driver IC. Therefore, this embodiment can minimize the distance between the position sensors and the driver IC, and thus improve sensing accuracy by minimizing the effects of noise. Furthermore, this implementation allows the driver IC to be mounted on the same circuit board as the first and second position detection sensors, thereby minimizing the increase in size.

[0248] Furthermore, when the second lens assembly 700 and the third lens assembly 800 are driven by the electromagnetic force between the coil and the magnet during autofocus or zoom, this embodiment can provide a camera actuator that can prevent magnetic field interference between the magnets mounted on each lens assembly, and a camera module including the camera actuator.

[0249] Specifically, this embodiment includes a first magnetic yoke 223 disposed between the second lens assembly 700 and the first magnet 222. Furthermore, this embodiment includes a second magnetic yoke 233 disposed between the third lens assembly 800 and the second magnet 232.

[0250] In this case, the shapes of the first magnetic yoke 223 and the second magnetic yoke 233 can correspond to each other. Therefore, only the first magnetic yoke 223 will be described in detail below.

[0251] Reference Figure 21a The first magnetic yoke 223 includes a first support portion 223a1 and a first side surface protrusion 223a2 extending from the first support portion 223a1 in the lateral direction of the first magnet 222.

[0252] The first side surface protrusion 223a2 can be disposed on the two side surfaces of the first magnet 222.

[0253] In addition, the first magnetic yoke 223 may include a first fixed protrusion 223a3, which extends in a direction different from that of the first side surface protrusion 223a2, for example, in the opposite direction.

[0254] The first fixed protrusion 223a3 may be located at the central part of the first support portion 223a1, but is not limited thereto.

[0255] Similarly, the second magnetic yoke 233 of this embodiment may include a second support portion, a second side surface protrusion portion and a second fixed protrusion portion corresponding to the first magnetic yoke 223.

[0256] In related technologies, multiple lens assemblies are driven by electromagnetic force between magnets and coils when achieving autofocus or zoom. However, a problem exists where magnetic field interference occurs between the magnets installed in each lens assembly. This magnetic field interference prevents proper autofocus or zoom operation and causes thrust to be attenuated.

[0257] In addition, there is a problem of eccentricity or tilting caused by magnetic field interference between magnets.

[0258] When such magnetic field interference causes problems with the accuracy of camera control, reduces thrust, or causes decent or tilting phenomena, it can directly affect the safety or lives of the user, such as the driver or pedestrian.

[0259] In particular, in the case of recently applied high magnification zoom actuators, the following problem exists: magnetic field interference occurs not only between the permanent magnets of the first lens assembly and the second lens assembly, which serve as moving lenses, but also with the magnets of the OIS actuator (IF).

[0260] The movement of each group is hindered by magnetic field interference (IF), and as a result, the input current also increases.

[0261] According to this embodiment, the magnetic yoke in the driving portion of the second lens assembly 700 or the third lens assembly 800 includes a side surface protrusion extending toward the side surface of the magnet, and thus has the following specific technical effect: a camera actuator and a camera module including the camera actuator can be provided, which can prevent magnetic field interference between magnets mounted on each lens assembly when multiple lens assemblies are driven by electromagnetic force between the magnet and the coil in the case of achieving autofocus or zoom.

[0262] Figure 21b and Figure 21c The first magnetic yoke 223 may include a first support portion 223a1 and a first side surface protrusion 223a2 extending from the first support portion 223a1 toward the side of the first magnet 222. The first side surface protrusion 223a2 may be disposed on both side surfaces of the first magnet 222. The first magnetic yoke 223 may be made of a ferromagnetic material, but is not limited thereto.

[0263] The first magnetic yoke 223 may include a first fixed protrusion 223a3, which extends in a direction different from that of the first side surface protrusion 223a2, for example, in the opposite direction. The first magnetic yoke 223 may include a support portion recess 223ar located between the first side surface protrusion 223a2 and the first fixed protrusion 223a3. The structures of the first side surface protrusion 223a2 and the first fixed protrusion 223a3 can be more firmly formed by the support portion recess 223ar.

[0264] According to this embodiment, the first magnetic yoke 223 includes a first side surface protrusion 223a2 extending to the side surface of the first magnet 222, and the side surface protrusion 223a2 is disposed on both sides of the first support portion 223a1, so that the first magnetic yoke 223 can be used to firmly fix the first magnet 222 and improve mechanical reliability.

[0265] Therefore, the first magnetic yoke 223 includes a first side surface protrusion 223a2 that extends to the side of the first magnet 222, so that it can prevent magnetic field interference between the magnets mounted on each lens assembly and can increase thrust by concentrating magnetic flux.

[0266] Furthermore, the first magnetic yoke 223 may include a first fixed protrusion 223a3, which extends in a direction different from that of the first side surface protrusion 223a2, for example, in the opposite direction, thereby improving mechanical engagement. For example, in this embodiment, while the first magnetic yoke 223 includes a first fixed protrusion 223a3 extending in a direction opposite to that of the first side surface protrusion 223a2, mechanical reliability can be improved by fixing the first fixed protrusion 223a3 to the second lens assembly 700.

[0267] Meanwhile, according to another embodiment, the second thickness T2 of the first side surface protrusion 223a2 can be formed to be greater than the first thickness T1 of the first support portion 223a1. Therefore, since the yoke is thicker in the region of high magnetic flux density, the efficiency of magnetic flux density loss is increased, thereby improving the shielding function of magnetic flux and concentrating the magnetic flux.

[0268] according to Figure 21d In a first additional embodiment, the magnetic yoke 223A may include a first support portion 223a1, a first side surface protrusion 223a2 extending from the first support portion 223a1 toward the side surface of the first magnet 222, and a first extended protrusion 223a22 extending upward from the first side surface protrusion 223a2 toward the upper surface of the first magnet 222.

[0269] Therefore, the total thickness of the first side surface protrusion 223a2 and the second extended protrusion 223a22 can be greater than the thickness of the first magnet 222.

[0270] According to the first additional embodiment, the magnetic yoke in the drive portion of the second lens assembly 700 and the third lens assembly 800 includes an extended protrusion that extends upward beyond the upper surface of the magnet, and thus has the following specific technical effects: magnetic leakage can be prevented more effectively, and thrust can be significantly improved by maximizing the concentration of magnetic flux in a region with high magnetic flux density.

[0271] In addition, refer to Figure 21e According to the second additional embodiment, the magnetic yoke 223A of the camera module may include a first support portion 223a1, a first side surface protrusion 223a2 extending from the first support portion 223a1 toward a first side surface of the first magnet 222, and a second side surface protrusion 223a4 protruding toward a second side surface of the first magnet 222.

[0272] The first side surface and the second side surface of the first magnet 222 may not face each other.

[0273] According to the second additional embodiment, the magnetic yoke in the drive portion of the second lens assembly 700 and the third lens assembly 800 includes a side surface protrusion, which has a structure that surrounds the four side surfaces of the magnet, and thus has the following technical effects: it can more effectively prevent magnetic leakage, and the magnetic flux density that prevents magnetic leakage can be used to increase thrust.

[0274] <Second Camera Actuator>

[0275] Figure 22 This is a perspective view of the camera module according to the implementation method, and Figure 23 This is a perspective view of a camera module according to this embodiment, with some components omitted.

[0276] Reference Figure 22 and Figure 23 The camera module 10 according to this embodiment may include one or more camera actuators. For example, the camera module 10 may include a first camera actuator 1000 and a second camera actuator 2000, and the camera module 10 may include a cover 15 protecting the first camera actuator 1000 and the second camera actuator 2000.

[0277] The first camera actuator 1000 can support multiple lenses and can perform zoom or autofocus functions by moving the lenses along the optical axis in response to a control signal from the controller. In other words, the first camera actuator 1000 can be as described above. Figures 1 to 14 The camera actuator.

[0278] The second camera actuator 2000 can be an optical image stabilizer actuator. In this case, light incident on the camera module 10 from the outside can first be incident on the second camera actuator 2000. Furthermore, the path of the light incident on the second camera actuator 2000 can be changed to be incident on the first camera actuator 1000, and the light passing through the first camera actuator 1000 can be incident on the image sensor 900.

[0279] Figure 24 This is an exploded perspective view of the second camera actuator according to an embodiment. Furthermore, Figure 25 This is a view of the third drive portion of the second camera actuator according to an embodiment, and Figure 26 This is a view of the third housing of the second camera actuator according to an embodiment. Furthermore, Figure 27 and Figure 28 This is a view of the prism unit of the second camera actuator according to an embodiment.

[0280] Reference Figures 24 to 28 The second camera actuator according to the embodiment will be described in more detail.

[0281] Reference Figure 24 The second camera actuator 2000 may include a cover member 2100, a third housing 2200, a third drive portion 2300, and a prism unit 2400.

[0282] The cover member 2100 may include a receiving space, and at least one side of the cover member 2100 may be open. For example, the cover member 2100 may have a structure in which a plurality of side surfaces connected to each other are open. In detail, the cover member 2100 may have a structure in which the front surface through which externally incident light passes, the lower surface corresponding to the first camera actuator 1000, and the rear surface opposite to the front surface are all open; and the cover member 2100 may provide the light path of the prism unit 2400, which will be described later.

[0283] The cover member 2100 may include a rigid material. For example, the cover member 2100 may include a material such as resin, metal, or ceramic and may support the third housing 2200 disposed in the receiving space. For example, the cover member 2100 may surround and support the third housing 2200, the third drive portion 2300, and the prism unit 2400.

[0284] Reference Figure 25 The third driving part 2300 may include a driving part circuit board 2310, a coil part 2330 and a magnet 2350.

[0285] The drive section circuit board 2310 can be connected to a power supply unit (not shown) to apply power to the coil section 2330. The drive section circuit board 2310 is a circuit board with a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), and a rigid flexible printed circuit board (Rigid Flexible PCB).

[0286] Coil 2330 can be electrically connected to drive section circuit board 2310. Coil section 2330 may include one or more coil sections. For example, coil section 2330 may include a first coil section 2331, a second coil section 2332, and a third coil section 2333.

[0287] The first coil portion 2331, the second coil portion 2332, and the third coil portion 2333 can be spaced apart from each other. For example, the drive circuit board 2310 can have an "U" shape, and the first coil portion 2331 and the second coil portion 2332 can be respectively disposed on a first surface and a second surface opposite to each other on the drive circuit board 2310. Furthermore, the third coil portion 2333 can be disposed on a third surface that connects the first surface and the second surface of the drive circuit board 2310.

[0288] Magnet 2350 may include one or more magnets. For example, magnet 2350 may include a first magnet 2351, a second magnet 2352, and a third magnet 2353 disposed in the region corresponding to coil portion 2330. Specifically, the first magnet 2351 may be disposed in the region corresponding to the first coil portion 2331 on the first surface of the drive portion circuit board 2310. Furthermore, the second magnet 2352 may be disposed in the region corresponding to the second coil portion 2332 on the second surface of the drive portion circuit board 2310. Furthermore, the third magnet 2353 may be disposed in the region corresponding to the third coil portion 2333 on the third surface of the drive portion circuit board 2310.

[0289] The third drive section 2300 may also include a Hall sensor. For example, the Hall sensor may include a first Hall sensor (not shown) and a second Hall sensor (not shown), the first Hall sensor (not shown) being disposed adjacent to a coil section selected from the first coil section 2331 and the second coil section 2332, and the second Hall sensor (not shown) being disposed adjacent to the third coil section 2333.

[0290] The third drive section 2300 can tilt the prism unit 2400. The third drive section 2300 can tilt the prism unit 2400 along the first axis or the second axis.

[0291] Reference Figure 26The third housing 2200 may include a receiving space for accommodating the prism unit 2400. The third housing 2200 may include multiple inner surfaces. For example, the third housing 2200 may include a first surface 2200S1 corresponding to a first region of the driving portion circuit board 2310, a second surface 2200S2 corresponding to a second region of the driving portion circuit board 2310, and a third surface 2200S3 corresponding to a third region of the driving portion circuit board 2310.

[0292] In detail, the third housing 2200 may include a first surface 2200S1 corresponding to the first coil portion 2331, a second surface 2200S2 corresponding to the second coil portion 2332, and a third surface 2200S3 corresponding to the third coil portion 2333. Furthermore, the third housing 2200 may include a fourth surface 2200S4, which is connected to the first surface 2200S1, the second surface 2200S2, and the third surface 2200S3.

[0293] The third housing 2200 may include a plurality of housing holes 2210. Each housing hole 2210 may be a through-hole passing through the outer and inner surfaces of the third housing 2200. The plurality of housing holes 2210 may include a first housing hole 2211, a second housing hole 2212, and a third housing hole 2213. The first housing hole 2211 may be a through-hole passing through a first surface 2200S1 and the corresponding outer surface. The second housing hole 2212 may be a through-hole passing through a second surface 2200S2 and the corresponding outer surface. The third housing hole 2213 may be a through-hole passing through a third surface 2200S3 and the corresponding outer surface.

[0294] The first housing hole 2211 can be provided in the region corresponding to the first coil portion 2331. Furthermore, the first housing hole 2211 can have a size and shape corresponding to the size and shape of the first coil portion 2331. Therefore, the first coil portion 2331 can be partially or completely inserted into and positioned within the first housing hole 2211.

[0295] The second housing hole 2212 can be provided in the region corresponding to the second coil portion 2332. Furthermore, the second housing hole 2212 can have dimensions and shape corresponding to the dimensions and shape of the second coil portion 2332. Therefore, the second coil portion 2332 can be partially or completely inserted into and positioned within the second housing hole 2212.

[0296] The third housing hole 2213 can be provided in the region corresponding to the third coil portion 2333. Furthermore, the third housing hole 2213 can have dimensions and shape corresponding to the dimensions and shape of the third coil portion 2333. Therefore, the third coil portion 2333 can be partially or completely inserted into and positioned within the third housing hole 2213.

[0297] Reference Figure 27 and Figure 28 The prism unit 2400 can be disposed in the third housing 2200. Specifically, the prism unit 2400 can be disposed in the receiving space of the third housing 2200.

[0298] The prism unit 2400 may include a prism 2410 and a prism mover 2430 disposed on the prism 2410.

[0299] Prism 2410 can be a right-angle prism. Prism 2410 can reflect the direction of light incident from the outside. That is, prism 2410 can change the path of light incident from the outside toward the first camera actuator 1000 and onto the second camera actuator 2000.

[0300] A prism mover 2430 may be disposed on prism 2410. The prism mover 2430 may be disposed around prism 2410. At least one side surface of the prism mover 2430 may be open and may include a receiving space. Specifically, the prism mover 2430 may have a structure in which a plurality of outer surfaces connected to each other are open. For example, the prism mover 2430 may have a structure in which the outer surface corresponding to prism 2410 is open; and the prism mover 2430 may include a receiving space defined as a first space 2435 within the prism mover 2430.

[0301] The prism mover 2430 may include an inner surface 2435S. The inner surface 2435S may be the inner surface constituting the first space 2435. The first space 2435 may have a shape corresponding to the shape of the prism 2410. The inner surface 2435S of the first space 2435 may be in direct contact with the prism 2410.

[0302] The prism mover 2430 may include a stepped portion 2436. The stepped portion 2436 may be disposed in the first space 2435. The stepped portion 2436 may serve as a guide portion and / or a seating portion for the prism 2410. Specifically, a protrusion corresponding to the stepped portion 2436 may be formed on the exterior of the prism 2410. The protrusion of the prism 2410 may be guided to the stepped portion 2436 of the prism mover 2430 and disposed in the first space 2435. Therefore, the prism mover 2430 can effectively support the prism 2410. Furthermore, the prism 2410 can be seated at a predetermined position and may have improved alignment characteristics within the prism mover 2430.

[0303] The prism unit 2400 may include multiple outer surfaces. For example, the prism mover 2430 may include multiple outer surfaces. The prism mover 2430 may include a first outer surface 2430S1 corresponding to a first surface 2200S1 of the third housing 2200, a second outer surface 2430S2 corresponding to a second surface 2200S2, a third outer surface 2430S3 corresponding to a third surface 2200S3, and a fourth outer surface 2430S4 corresponding to a fourth surface 2200S4.

[0304] Furthermore, the prism mover 2430 may include multiple recesses. Each recess may be a concave shape on the outer surface of the prism mover 2430 facing the first space 2435. The multiple recesses may include a third recess 2433R1, a fourth recess 2433R2, and a fifth recess 2433R3. For example, the third recess 2433R1 may be disposed on the first outer surface 2430S1. The third recess 2433R1 may be disposed in the region corresponding to the first housing hole 2211. Furthermore, the fourth recess 2433R2 may be disposed on the second outer surface 2430S2. The fourth recess 2433R2 may be disposed in the region corresponding to the second housing hole 2212. Furthermore, the fifth recess 2433R3 may be disposed on the third outer surface 2430S3. The fifth recess 2433R3 may be disposed in the region corresponding to the third housing hole 2213. That is, the first housing hole 2211 can correspond to the first coil portion 2331, and the second housing hole 2212 can correspond to the second coil portion 2332. In addition, the third housing hole 2213 can correspond to the third coil portion 2333.

[0305] Magnet 2350 can be disposed in a recess. For example, first magnet 2351 is disposed in third recess 2433R1, second magnet 2352 is disposed in fourth recess 2433R2, and third magnet 2353 is disposed in fifth recess 2433R3, and therefore, first magnet 2351, second magnet 2352 and third magnet 2353 can be spaced apart from each other.

[0306] The prism unit 2400 can be controlled to tilt along a first axis (x-axis) or a second axis (y-axis) via the drive portion of the third drive portion 2300. Here, tilting along the first axis can refer to tilting in the vertical direction (y-axis direction, second direction) with the x-axis direction shown in the figures as the axis of rotation, and tilting along the second axis can refer to tilting in the horizontal direction (x-axis direction; first direction) with the y-axis direction shown in the figures as the axis of rotation.

[0307] When power is applied, the prism unit 2400 can be tilted based on the attractive and repulsive forces generated from the third coil section 2333 and the third magnet 2353.

[0308] In detail, the third drive section 2300 can be configured to rotate and move the prism unit 2400 about a rotation axis (not shown) formed by a first virtual line consisting of the first coil section 2331, the second coil section 2332, the first magnet 2351, and the second magnet 2352. Here, the first line can be a line extending in a first direction (x-axis direction).

[0309] The third coil section 2333 and the third magnet 2353 enable the prism unit 2400 to rotate and move in the vertical direction (y-axis direction) with the first line as the axis of rotation.

[0310] For example, a repulsive force can be generated between the third coil portion 2333 and the third-first magnet of the third magnet 2353, and an attractive force can be generated between the third coil portion 2333 and the third-second magnet of the third magnet 2353. Here, the third-first magnet and the third-second magnet can face each other in the third direction (z-axis direction). In this case, the generated electromagnetic force can be used to tilt the prism unit 2400 upward (based on the y-axis direction).

[0311] Furthermore, an attractive force can be generated between the third coil portion 2333 and the third-first magnet of the third magnet 2353, and a repulsive force can be generated between the third coil portion 2333 and the third-second magnet of the third magnet 2353. In this case, the generated electromagnetic force can be used to tilt the prism unit 2400 downward (based on the y-axis direction).

[0312] When power is applied, the prism unit 2400 can be tilted based on the attractive and repulsive forces generated from the first coil portion 2331, the second coil portion 2332, the first magnet 2351, and the second magnet 2352.

[0313] In detail, the third drive section 2300 can be configured to rotate and move the prism unit 2400 about a rotation axis formed by a second virtual line (not shown) formed by the third magnet 2353 and the third coil unit 2333. Here, the second line can be a line extending in a second direction (y-axis direction).

[0314] The first coil portion 2331, the second coil portion 2332, the first magnet 2351, and the second magnet 2352 can enable the prism unit 2400 to rotate and move in the left-right direction (x-axis direction) with the second line as the axis of rotation.

[0315] For example, a repulsive force can be generated between the first coil portion 2331 and the first-first magnet of the first magnet 351, and an attractive force can be generated between the first coil portion 2331 and the first-second magnet of the first magnet 2351. Furthermore, an attractive force can be generated between the second coil portion 2332 and the second-first magnet of the second magnet 2352, and a repulsive force can be generated between the second coil portion 2332 and the second-second magnet of the second magnet 2352. Here, the first-first magnet and the second-first magnet can face each other in a first direction, and the first-second magnet and the second-second magnet can face each other in the first direction. In this case, the generated electromagnetic force can be used to tilt the prism unit 2400 in the left direction (based on the x-axis direction).

[0316] For example, an attractive force can be generated between the first coil portion 2331 and the first magnet 351 (first-to-first magnet), and a repulsive force can be generated between the first coil portion 2331 and the first magnet 2351 (first-to-first magnet). Furthermore, a repulsive force can be generated between the second coil portion 2332 and the second magnet 2352 (second-to-second magnet), and an attractive force can be generated between the second coil portion 2332 and the second magnet 2352 (second-to-second magnet). In this case, the generated electromagnetic force can be used to tilt the prism unit 2400 in the right direction (based on the x-axis direction).

[0317] In other words, the second camera actuator 2000 according to this embodiment can control the movement path of the incident light through a third drive section 2300 including a voice coil motor method. However, this embodiment is not limited to this, and the third drive section 2300 may include a piezoelectric element, such as a piezoelectric device or a shape memory alloy, and therefore, a piezoelectric element and / or a shape memory alloy can be used to control the movement path of the incident light.

[0318] The camera actuator and camera module including the camera actuator according to the embodiments can improve assembly reliability. Specifically, the camera actuator and camera module according to the embodiments include a base recess formed around a connecting protrusion of the base and defining a flow path for the adhesive member. Therefore, this embodiment can solve the problem of adhesive member overflowing into the interior of the base, thereby improving assembly reliability. Furthermore, this embodiment allows the base recess to include an extension portion extending from the connecting protrusion of the base, rather than being formed only around the connecting protrusion of the base. Therefore, this embodiment can further prevent adhesive member from penetrating into the base, thereby improving product reliability.

[0319] Furthermore, the camera actuator and camera module including the camera actuator according to this embodiment also form a recess around the coupling hole of the guide rail portion, which prevents adhesive material from overflowing when the guide rail portion is connected to the lens assembly. In this case, the recess is not only formed around the coupling hole but also includes an additional recess, which is spaced apart from the coupling hole and defines a region located between the area where the coupling hole is formed and the guide rail area of ​​the guide rail portion. Therefore, this embodiment can prevent adhesive material from penetrating into the guide rail of the guide rail portion, thereby improving the movement accuracy of the lens assembly.

[0320] Figure 29 This is a perspective view of a mobile terminal to which the camera module is applied according to the implementation method.

[0321] Reference Figure 29 According to the embodiments, the mobile terminal 3 may include a camera module 10, an autofocus device 31, and a flash module 33 disposed on the rear surface.

[0322] The camera module 10 may include image capture functionality and autofocus functionality. For example, the camera module 10 may include an autofocus function that uses an image.

[0323] The camera module 10 processes still images or moving image frames acquired by the image sensor in shooting mode or video call mode. The processed image frames can be displayed on a predetermined display unit and stored in memory. The camera (not shown) can be mounted on the front surface of the mobile terminal body.

[0324] For example, camera module 10 may include a first camera module 10A and a second camera module 10B. In this case, at least one of the first camera module 10A and the second camera module 10B may include the camera module described above, for example, according to... Figures 1 to 2 The camera module 10 is 0. Therefore, the camera module 10 can implement the OIS function together with the zoom function and the autofocus function.

[0325] The autofocus device 31 may include an autofocus function using a laser. The autofocus device 31 can be used primarily under conditions where the autofocus function of the image from the camera module 10 deteriorates, such as in an enclosed environment of 10m or less or in a dark environment. The autofocus device 31 may include a light-emitting unit with a vertical-cavity surface-emitting laser (VCSEL) semiconductor device and a light-receiving unit, such as a photodiode, that converts light energy into electrical energy.

[0326] The flash module 33 may include a light-emitting device that emits light therein. The flash module 33 can be operated via the camera of a mobile terminal or via user control.

[0327] Next, Figure 30 This is a perspective view of vehicle 5 to which the camera module is applied according to the embodiment. For example, Figure 30 It is an exterior view of a vehicle equipped with a vehicle driving assistance device applied according to the embodiment of the camera module 10.

[0328] Reference Figure 30 The vehicle 5 according to this embodiment may include wheels 53FL and 53RL that rotate by a power source, as well as predetermined sensors. The sensors may be camera sensors 51, but this embodiment is not limited to this.

[0329] Camera 51 may be a camera sensor used in camera module 10 according to the embodiment.

[0330] According to this embodiment, the vehicle 5 can acquire image information by using a camera sensor 51 to capture images of the front or surroundings, and can determine unrecognized lanes by using the image information and generate virtual lanes in the unrecognized cases.

[0331] For example, camera sensor 51 can acquire a frontal image by photographing the front of vehicle 5, and processor (not shown) can acquire image information by analyzing the objects included in the frontal image.

[0332] For example, when lanes, adjacent vehicles, obstacles, and median strips, curbs, and roadside trees corresponding to indirect road markings are captured in an image by camera sensor 51, the processor detects such objects to include them in the image information.

[0333] In this scenario, the processor can acquire distance information about the objects detected by camera sensor 51 to further supplement the image information. The image information can be information about the objects captured in the image.

[0334] This camera sensor 51 may include an image sensor and an image processing module. The camera sensor 51 can process still or moving images acquired by the image sensor (e.g., CMOS or CCD). The image processing module can process the still or moving images acquired by the image sensor to extract necessary information and transmit the extracted information to a processor.

[0335] In this case, camera sensor 51 may include a stereo camera to improve the measurement accuracy of the object and to ensure more information, such as the distance between vehicle 5 and the object, but this implementation is not limited to this.

Claims

1. A camera actuator, comprising: Base; A movable portion, which is disposed in the base and includes a lens; as well as The driving part is used to move the moving part along the optical axis direction; The driving part includes: Circuit board; A sensing component, wherein the sensing component is disposed on the circuit board and senses the position of the moving component; and A driver IC, which is mounted on the circuit board and connected to the sensing section; The sensing portion includes a first sensing portion and a second sensing portion. Wherein, the signal distance between the first sensing part and the driver IC corresponds to the signal distance between the second sensing part and the driver IC. The base includes a first sidewall, a second sidewall facing the first sidewall, and a lower portion located between the first sidewall and the second sidewall. The circuit board includes: a first substrate region corresponding to the first sidewall, and the first sensing portion disposed on the first substrate region; a second substrate region corresponding to the second sidewall, and the second sensing portion disposed on the second substrate region; and a third substrate region corresponding to the lower portion, and the driver IC disposed on the third substrate region.

2. The camera actuator according to claim 1, further comprising: A guide rail portion, which is connected to the base; The movable part includes a second lens assembly and a third lens assembly, which are disposed in the base and move along the guide rail portion; The first sensing component senses the position of the second lens assembly, and The second sensing part senses the position of the third lens assembly.

3. The camera actuator according to claim 2, wherein, The first sensing portion and the second sensing portion are disposed facing each other on the first substrate region and the second substrate region.

4. The camera actuator according to claim 2, wherein, The driving component includes: A first coil, the first coil being disposed in the first substrate region and surrounding the first sensing portion; and The second coil is disposed on the second substrate area and surrounds the second sensing portion.

5. The camera actuator according to claim 2, wherein, The circuit board includes: A first signal line is connected between the first sensing portion and the driver IC; A second signal line is connected between the second sensing section and the driver IC; and The length of the first signal line corresponds to the length of the second signal line.

6. The camera actuator according to claim 5, wherein, The length of one of the first signal line and the second signal line is within the range of 95% to 105% of the length of the other signal line.

7. The camera actuator according to claim 2, wherein, The guide rail guiding part includes: A first guide portion, wherein the first guide portion is disposed adjacent to the first sidewall of the base, and the first guide portion includes a first guide rail; and The second guide portion is disposed adjacent to the second sidewall of the base, and the second guide portion includes a second guide rail; The second lens assembly moves along the first guide rail of the first guide portion, and The third lens assembly moves along the second guide rail of the second guide portion.

8. The camera actuator according to claim 4, wherein, The base includes: A first opening is formed in the first sidewall and corresponds to the first coil; A second opening, formed in the second sidewall and corresponding to the second coil; and A third opening is formed in the lower portion and corresponds to the driver IC.

9. The camera actuator according to claim 7, wherein, The base includes a connecting protrusion and a base recess disposed along the circumference of the connecting protrusion, and The guide rail portion includes a connecting hole corresponding to the connecting protrusion of the base.

10. The camera actuator according to claim 9, wherein, The base includes a stepped region. The stepped region includes a first region and a second region, the connecting protrusion is formed in the first region, and the second region protrudes from the first region. The base recess includes: A first recessed portion, the first recessed portion being disposed along the circumference of the connecting protrusion on the first region; and The second recessed portion extends from the first recessed portion toward the second region of the base and connects to the second region of the base.

11. The camera actuator according to claim 10, wherein, The connecting protrusion includes a first connecting protrusion and a second connecting protrusion, wherein the first guide portion is connected to the first connecting protrusion and the second guide portion is connected to the second connecting protrusion; The base recess includes a first base recess disposed along the circumference of the first connecting protrusion and a second base recess disposed along the circumference of the second connecting protrusion.

12. The camera actuator according to claim 11, wherein, The first base recess is configured to face the first guide portion; The second base recess is configured to face the second guide portion.

13. The camera actuator according to claim 11, wherein, The connecting hole includes: A first connecting hole, wherein the first connecting hole is disposed in the first guide portion and corresponds to the first connecting protrusion; and The second connecting hole is disposed in the second guide portion and corresponds to the second connecting protrusion. The first guide portion includes a first guide recess disposed along the circumference of the first connecting hole, and The second guide portion includes a second guide recess disposed along the circumference of the second connecting protrusion.

14. The camera actuator according to claim 13, wherein, Each of the first connecting protrusion and the second connecting protrusion is provided in multiple forms. The first connecting hole is provided in multiple forms to correspond to the first connecting protrusion. The second connecting hole is provided in multiple forms to correspond to the second connecting protrusion.

15. The camera actuator according to claim 14, wherein, The first guide portion includes a first extending recess, the first extending recess being spaced apart from and extending along a direction separating the plurality of first connecting holes, and The second guide portion includes a second extending recess, which is spaced apart from and extends along the direction separating the plurality of second connecting holes.

16. The camera actuator of claim 14, wherein, The plurality of first connecting holes have different shapes or sizes, and the plurality of second connecting holes have different shapes or sizes.

17. A camera actuator, comprising: The base includes a first sidewall, a second sidewall facing the first sidewall, and a lower portion located between the first sidewall and the second sidewall; A first guide portion is disposed adjacent to the first sidewall of the base, and the first guide portion includes a first guide rail; The second guide portion is disposed adjacent to the second sidewall of the base, and the second guide portion includes a second guide rail; A first lens assembly is connected to and fixed to the base; A second lens assembly is disposed in the base and moves along the first guide rail of the first guide portion; A third lens assembly is disposed in the base and moves along the second guide rail of the second guide portion; as well as The driving section drives the second lens assembly and the third lens assembly; The driving part includes: Circuit board; A first driving section is disposed on the circuit board. The first driving section includes a first position sensor for sensing the position of the second lens assembly and driving the second lens assembly. A second driving section, disposed on the circuit board, includes a second position sensor for sensing the position of the third lens assembly and driving the third lens assembly; and A driver IC, which is disposed on the circuit board and connected to the first driving section and the second driving section; The signal distance between the driver IC and the first position sensor corresponds to the signal distance between the driver IC and the second position sensor. The circuit board includes: a first substrate region corresponding to the first sidewall, and the first driving portion disposed on the first substrate region; a second substrate region corresponding to the second sidewall, and the second driving portion disposed on the second substrate region; and a third substrate region corresponding to the lower portion, and the driver IC disposed on the third substrate region. The first signal line connecting the driver IC and the first position sensor, and the second signal line connecting the driver IC and the second position sensor, are disposed on the first substrate region to the third substrate region. Wherein, the distance of the first signal line corresponds to the distance of the second signal line.

Images