Camera actuator and camera module including the same

Abstract

An embodiment discloses a camera actuator including a housing including a first side portion, a first lens assembly that moves in an optical axis direction within the housing, and a first driving unit that moves the first lens assembly. The first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet. The first coil is disposed on the first side portion of the housing and includes a first sub-coil and a second sub-coil sequentially disposed in the optical axis direction. The housing includes a first reinforcing member disposed between the first sub-coil and the second sub-coil.

Description

Technical Field

[0001] The present invention relates to a camera actuator and a camera module including the same.

Background Art

[0002] A camera is a device that captures a subject in a photograph or video, and is mounted on a portable device, a drone, a vehicle, etc. A camera module has an Image Stabilization (IS) function that corrects or prevents image blurring due to the movement of the user in order to improve the quality of the video, an Auto Focusing (AF) function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens, and a zooming function that increases or decreases the magnification of a distant subject through a zoom lens for shooting.

[0003] However, there is a problem that the reliability of the housing is reduced corresponding to the long moving distance of the lens assembly in the camera module.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a camera actuator and a camera module with improved rigidity through a reinforcing member.

[0005] In addition, the embodiments of the present invention can provide a camera actuator and a camera module that provide an improved moving distance through a reinforcing member.

[0006] In addition, the embodiments of the present invention can provide a camera actuator and a camera module that provide different driving distances through different lengths between sub-coils and have improved driving efficiency.

[0007] In addition, embodiments of the present invention can provide a camera actuator and a camera module that adjust the positions of a plurality of stoppers to improve the balance between the crack and impact of lenses in a lens assembly that moves in the optical axis direction.

[0008] An embodiment of the present invention is to provide a camera actuator applicable to ultra-thin, ultra-small, and high-resolution cameras.

[0009] The problems to be solved in the embodiments are not limited to this, and it can be said that they also include the means for solving the problems described below and the objects and effects that can be grasped from the embodiments.

Means for Solving the Problems

[0010] A camera actuator according to an embodiment of the present invention includes a housing including a first side portion, a first lens assembly that moves in the optical axis direction within the housing, and a first driving unit that moves the first lens assembly. The first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet. The first coil is disposed on the first side portion of the housing and includes a first sub-coil and a second sub-coil sequentially disposed in the optical axis direction. The housing includes a first reinforcing member disposed between the first sub-coil and the second sub-coil.

[0011] The first reinforcing member may at least partially overlap the first coil in the optical axis direction.

[0012] The first reinforcing member may include a first member groove disposed at an end portion.

[0013] The housing may further include a second lens assembly that moves in the optical axis direction within the housing and a second driving unit that moves the second lens assembly. The housing includes a second side portion facing the first side portion, and the second driving unit may include a second magnet disposed on the second lens assembly and a second coil facing the second magnet.

[0014] The length of the first magnet in the optical axis direction may be greater than the length of the hole of the first sub-coil in the optical axis direction.

[0015] The length of the first coil in the optical axis direction may be the sum of the lengths of the first sub-coil and the second sub-coil and the first reinforcing member in the optical axis direction.

[0016] The first groove may include a first sub-groove in which the first sub-coil is disposed and a second sub-groove in which the second sub-coil is disposed.

[0017] The length of the first magnet in the optical axis direction may be greater than the length of the first sub-groove or the second sub-groove in the optical axis direction.

[0018] The second coil may be disposed on the second side portion of the housing and include a third sub-coil and a fourth sub-coil that are sequentially disposed in the optical axis direction.

[0019] The length of the second coil in the optical axis direction may be greater than the length of the first coil in the optical axis direction.

[0020] The first coil and the second coil may be displaced and disposed in a direction perpendicular to the optical axis direction.

[0021] The length of the first sub-coil or the second sub-coil in the optical axis direction may be smaller than the length of the third sub-coil or the fourth sub-coil in the optical axis direction.

[0022] The housing may include a second groove in which the second coil is disposed and a second reinforcing member disposed between the third sub-coil and the fourth sub-coil.

[0023] The first reinforcing member and the second reinforcing member may be displaced and disposed in a direction perpendicular to the optical axis direction.

[0024] The length of the second groove in the optical axis direction may be greater than the length of the first groove in the optical axis direction.

[0025] The second groove may include a third sub-groove in which the third sub-coil is disposed and a fourth sub-groove in which the fourth sub-coil is disposed.

[0026] The length of the third sub-groove or the fourth sub-groove in the optical axis direction may be greater than the length of the first sub-groove or the second sub-groove in the optical axis direction.

[0027] The first reinforcing member may be located at the center of the first groove, and the second reinforcing member may be located at the center of the second groove.

[0028] Including a first-1 stopper and a second-1 stopper that are spaced apart along the optical axis direction and adjacent to the first side portion, and a first-2 stopper and a second-2 stopper that are spaced apart along the optical axis direction and adjacent to the second side portion, the first-1 stopper and the first-2 stopper overlap in a direction perpendicular to the optical axis direction, and the second-1 stopper and the second-2 stopper may be arranged offset in a direction perpendicular to the optical axis direction.

[0029] The camera actuator according to the embodiment includes a housing formed on a first side portion and including a first hole and a second hole that are spaced apart from each other, a first lens assembly that moves in the optical axis direction within the housing, and a first driving unit that moves the first lens assembly, the first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet, the first coil is disposed on the first side portion of the housing and includes a first sub-coil and a second sub-coil that are sequentially arranged in the optical axis direction, the first sub-coil is disposed in the first hole, and the second sub-coil is disposed in the second hole.

[0030] The housing includes a first portion disposed between the first hole and the second hole, and the first portion may overlap with the first coil in the optical axis direction.

[0031] The camera actuator according to the embodiment includes a housing including a first side portion and a second side portion facing each other, a first lens assembly and a second lens assembly that move in the optical axis direction within the housing, a first driving unit that moves the first lens assembly, and a second driving unit that moves the second lens assembly. The first driving unit includes a first magnet disposed on the first lens assembly, and a first sub-coil and a second sub-coil disposed on the first side portion facing the first magnet. The second driving unit includes a second magnet disposed on the second lens assembly, and a third sub-coil and a fourth sub-coil disposed on the second side portion facing the second magnet. The housing includes a first reinforcing member disposed between the first sub-coil and the second sub-coil, and a second reinforcing member disposed between the third sub-coil and the fourth sub-coil.

[0032] The first reinforcing member and the second reinforcing member may not overlap in a direction perpendicular to the optical axis direction.

Advantages of the Invention

[0033] According to the embodiment of the present invention, a camera actuator and a camera module with improved rigidity are realized through the reinforcing member.

[0034] Also, the embodiment of the present invention can realize a camera actuator and a camera module that provide an improved moving distance through the reinforcing member.

[0035] Also, the embodiment of the present invention can realize a camera actuator and a camera module that provide different driving distances through different lengths between the sub-coils and have improved driving efficiency.

[0036] In addition, embodiments of the present invention can realize a camera actuator and a camera module that adjust the positions of a plurality of stoppers to improve the balance between lens cracks and impacts in a lens assembly that moves in the optical axis direction.

[0037] Embodiments of the present invention can realize a camera actuator applicable to ultra-thin, ultra-small, and high-resolution cameras.

[0038] The various and beneficial advantages and effects of the present invention are not limited to the above-described content and will be more easily understood in the process of explaining specific embodiments of the present invention.

Brief Description of the Drawings

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MODE FOR CARRYING OUT THE INVENTION

[0069] Since the present invention can be modified in various ways and can have various embodiments, specific embodiments are shown in the drawings and described. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and alternatives included in the spirit and technical scope of the present invention.

[0070] Terms including ordinal numbers such as second and first can be used to describe various components, but the components are not limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the rights of the present invention, the second component can be called the first component, and similarly, the first component can also be called the second component. The term "and / or" includes a combination of a plurality of related described items or any one of the plurality of related described items.

[0071] When it is described that a certain component is "connected" or "coupled" to another component, it should be understood that it may be directly connected or coupled to the other component, but there may also be other components between them. On the other hand, when it is described that a certain component is "directly connected" or "directly coupled" to another component, it should be understood that there are no other components between them.

[0072] The terms used in this application are merely used to describe specific embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "including" or "having" are used to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and it should be understood that they do not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0073] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an idealized or overly formal sense unless clearly defined in this application.

[0074] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The same or corresponding components are denoted by the same reference numerals regardless of the reference signs, and redundant descriptions thereof are omitted.

[0075] FIG. 1 is a perspective view of a camera module according to an embodiment, FIG. 2 is an exploded perspective view of the camera module according to the embodiment, and FIG. 3 is a view seen along AA' of FIG. 1.

[0076] Referring to FIGS. 1 and 2, the camera module 1000 according to the embodiment may be composed of a cover CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. Here, the first camera actuator 1100 may be mixed with the first actuator, and the second camera actuator 1200 may be mixed with the second actuator.

[0077] The cover CV can cover the first camera actuator 1100 and the second camera actuator 1200. The cover CV can improve the coupling force between the first camera actuator 1100 and the second camera actuator 1200.

[0078] Furthermore, the cover CV may be made of a material that blocks electromagnetic waves. Therefore, the first camera actuator 1100 and the second camera actuator 1200 inside the cover CV can be easily protected.

[0079] Also, the first camera actuator 1100 may be an OIS (Optical Image Stabilizer) actuator. For example, the first camera actuator 1100 can move an optical member in a direction perpendicular to the optical axis (the axis of incident light).

[0080] The first camera actuator 1100 may include a fixed focal length lens disposed in a predetermined lens barrel (not shown). The fixed focal length lens may also be referred to as a "single focal length lens" or a "single lens".

[0081] The first camera actuator 1100 can change the optical path. In an embodiment, the first camera actuator 1100 can change the optical path vertically through an internal optical member (e.g., a prism or a mirror). For example, the optical member can change light from the first direction (X-axis direction) to the third direction (Z-axis direction). Or, the optical member can change light from the first axis to the second axis. With such a configuration, even if the thickness of the mobile terminal decreases, a lens configuration larger than the thickness of the mobile terminal can be disposed inside the mobile terminal due to the change of the optical path, and functions such as magnification, autofocusing (AF), zoom, and OIS can be achieved.

[0082] However, not limited thereto, the first camera actuator 1100 can change the optical path multiple times vertically or at a predetermined angle.

[0083] The second camera actuator 1200 may be disposed at the rear end of the first camera actuator 1100. The second camera actuator 1200 can be coupled to the first camera actuator 1100. Also, the coupling between them may be performed in various ways.

[0084] Also, the second camera actuator 1200 may be a zoom actuator or an AF (Auto Focus) actuator. For example, the second camera actuator 1200 supports one or more lenses and can move the lenses according to a control signal of a predetermined control unit to perform an auto-focusing function or a zoom function.

[0085] Also, one or more lenses can move independently or individually along the optical axis direction

[0086] The circuit board 1300 may be disposed at the rear end of the second camera actuator 1200. The circuit board 1300 can be electrically connected to the second camera actuator 1200 and the first camera actuator 1100. Also, there may be a plurality of circuit boards 1300.

[0087] The camera module according to the embodiment may be composed of a single or a plurality of camera modules. For example, the plurality of camera modules may include a first camera module and a second camera module.

[0088] Also, the first camera module may include a single or a plurality of actuators. For example, the first camera module may include the first camera actuator 1100 and the second camera actuator 1200.

[0089] In addition, the second camera module may be disposed in a predetermined housing (not shown) and include an actuator (not shown) capable of driving a lens unit. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, etc., and can be variously applied, such as electrostatic method, thermal method, bimorph method, electrostatic force method, etc., and is not limited thereto. Also, in this specification, the camera actuator can be referred to as an actuator or the like. Further, a camera module composed of a plurality of camera modules may be mounted in various electronic devices such as a mobile terminal. Furthermore, the actuator may be a device that moves or tilts a lens or an optical member. However, in the following, the actuator will be described as a concept including a lens and an optical member. Furthermore, the actuator may also be called a "lens transfer device", "lens moving device", "optical member transfer device", "optical member moving device", etc.

[0090] Referring to FIG. 3, the camera module according to the embodiment may include a first camera actuator 1100 that performs an OIS function and a second camera actuator 1200 that performs a zooming function and an AF function.

[0091] Light can enter the camera module or the first camera actuator through an opening region located on the upper surface of the first camera actuator 1100. That is, light first enters the inside of the first camera actuator 1100 along the vertical direction (for example, the X-axis direction, based on the incident light), and the optical path can be changed in the optical axis direction (for example, the Z-axis direction) by the optical member. Also, light can pass through the second camera actuator 1200 and enter the image sensor IS located at one end of the second camera actuator 1200 (PATH). In this specification, the Z-axis direction or the third direction will be described as the optical axis direction as follows. Also, the first direction and the X-axis direction will be described as the vertical direction. Also, the second direction and the Y-axis direction will be described as the horizontal direction.

[0092] In this specification, the bottom surface means one side in the first direction. Also, the first direction is the X-axis direction on the drawing, and it may be used interchangeably with the second axis direction or the like. The second direction is the Y-axis direction on the drawing, and it may be used interchangeably with the first axis direction or the like. The second direction is perpendicular to the first direction. Also, the third direction is the Z-axis direction on the drawing, and it may be used interchangeably with the third axis direction or the like. Also, the third direction is perpendicular to both the first direction and the second direction. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are perpendicular to the optical axis. Also, in the following description of the first and second camera actuators, the optical axis direction is the third direction (Z-axis direction), and the following description is based on this.

[0093] Also, in this specification, the inner side may be the direction from the cover CV toward the first camera actuator, and the outer side may be the opposite direction to the inner side. That is, the first camera actuator and the second camera actuator are located inside the cover CV, and the cover CV may be located outside the first camera actuator or the second camera actuator.

[0094] Also, with such a configuration, the camera module according to the embodiment can improve the spatial limitations of the first camera actuator and the second camera actuator by changing the optical path. That is, the camera module according to the embodiment can expand the optical path while minimizing the thickness of the camera module in response to the change in the optical path. Furthermore, it should be understood that the second camera actuator can also provide a high range of magnification by controlling the focus and the like with the expanded optical path.

[0095] Also, the camera module according to the embodiment can realize OIS by controlling the optical path through the first camera actuator, thereby minimizing the occurrence of decent and tilt phenomena and obtaining the best optical characteristics.

[0096] Furthermore, the second camera actuator 1200 may include an optical system and a lens driving unit. For example, at least one or more of a first lens assembly, a second lens assembly, and a third lens assembly may be arranged in the second camera actuator 1200.

[0097] In addition, the second camera actuator 1200 can perform a high magnification zooming function and an autofocus function by including a coil and a magnet.

[0098] For example, the first lens assembly and the second lens assembly may be moving lenses that move via a coil, a magnet, and a guide pin, and the third lens assembly may be a fixed lens, but is not limited thereto. For example, the third lens assembly can function as a focator that forms an image of light at a specific position, and the first lens assembly can function as a variator that re-images the image formed by the third lens assembly, which is a focator, at another point. On the other hand, in the first lens assembly, there is a possibility that the distance to the subject or the image distance changes greatly and the magnification change is large, and the first lens assembly, which is a variator, can play an important role in the focal length or magnification change of the optical system. On the other hand, the image point formed by the first lens assembly, which is a variator, may have a slight difference depending on the position. Therefore, the second lens assembly can function as a position compensation function for the image formed by the variator. For example, the second lens assembly can function as a compensator that accurately forms the image point formed by the first lens assembly, which is a variator, at the actual image sensor position. For example, the first lens assembly and the second lens assembly may be driven by an electromagnetic force due to the interaction between the coil and the magnet. The above-described content can be applied to the lens assemblies described later. Also, the first lens assembly to the third lens assembly can move along the optical axis direction, that is, the third direction. Also, the first lens assembly to the third lens assembly can move in the third direction independently or dependently on each other. In the present invention, the first lens assembly and the second lens assembly can move along the optical axis direction. Also, the third lens assembly may be located at the front end of the first lens assembly or the rear end of the second lens assembly. Also, the third lens assembly may not move in the optical axis direction. That is, the third lens assembly may be a fixed part. Also, the first and second lens assemblies may be moving parts.

[0099] On the one hand, when the OIS actuator and the AF / Zoom actuator are arranged according to an embodiment of the present invention, magnetic field interference with the AF / Zoom magnet can be prevented during driving of the OIS. Since the first drive magnet of the first camera actuator 1100 is arranged separately from the second camera actuator 1200, magnetic field interference between the first camera actuator 1100 and the second camera actuator 1200 can be prevented. In this specification, OIS may be used interchangeably with terms such as shake correction, optical image stabilization, optical image correction, and blur correction.

[0100] In particular, the optical member RM may be tilted in the X-axis or Y-axis by the first camera actuator 1100. Thereby, the optical path can be easily changed by tilting in the X-axis or Y-axis.

[0101] The optical member RM can be mounted on a holder of the first camera actuator or the like. In an embodiment, the optical member RM may be composed of a mirror or a prism. In the following, it is shown based on a prism, but it may be composed of a plurality of lenses as in the above-described embodiment. Alternatively, the optical member RM may be composed of a plurality of lenses and a prism or a mirror. Further, the optical member RM may include a reflection portion disposed therein. However, it is not limited thereto.

[0102] The optical member RM may be tilted in the X-axis or Y-axis by driving a VCM or the like with the first camera actuator 1100. That is, OIS can be realized by tilting or rotating the optical member RM with reference to the Y-axis direction or the X-axis direction.

[0103] FIG. 4 is a perspective view of the second camera actuator according to the embodiment, FIG. 5 is an exploded perspective view of the second camera actuator according to the embodiment, FIG. 6 is a cross-sectional view taken along DD' of FIG. 4, FIGS. 7 and 8 are diagrams for explaining each drive of the lens assembly according to the embodiment, and FIG. 9 is a drawing for explaining the drive of the second camera actuator according to the embodiment.

[0104] Referring to FIGS. 4 to 6, the second camera actuator 1200 (or camera device, or zoom lens transfer device, or zoom lens moving device, or lens transfer device) according to the embodiment may include a lens unit 1220, a housing 1230, a drive unit 1250, a base unit 1260, a substrate unit 1270, and stoppers ST1 and ST2. Further, the second camera actuator 1200 may further include a shield can (not shown), an elastic part (not shown), and a joining member (not shown).

[0105] Also, as will be described later, the lens group can move along the optical axis direction. Further, the lens group can be coupled to the lens assembly and move together along the optical axis direction. At this time, the second camera actuator may include a moving part that moves in the optical axis direction like the lens group and a fixed part that is relatively fixed without moving along the optical axis direction unlike the moving part. In the present embodiment, the moving part may include a lens assembly (for example, first and second lens assemblies) and optical drive magnets (first and second drive magnets). Further, the fixed part may include a housing, a substrate part, optical drive coils (first and second coils), and a hall sensor. Further, a drive magnet may be disposed on either one of the moving part and the fixed part, and a drive coil may be disposed on the other one. Corresponding to such description, the moving distance of the lens assembly described later can correspond to the moving distance of the moving part.

[0106] The shield can (not shown) is located in an area (for example, the outermost side) of the second camera actuator 1200 and may be located so as to surround components (lens unit 1220, housing 1230, drive unit 1250, base unit 1260, substrate unit 1270, and image sensor IS disposed on the circuit board at the rear end) described later.

[0107] Such a shield can (not shown) can block or reduce electromagnetic waves generated outside. Thereby, the occurrence of malfunction in the drive unit 1250 can be reduced.

[0108] The lens unit 1220 may be located within a shield can (not shown). The lens unit 1220 can move along the third direction (Z-axis direction or optical axis direction). Thereby, the above-described AF function or zoom function can be achieved.

[0109] Also, the lens unit 1220 may be located within the housing 1230. Thereby, at least a part of the lens unit 1220 can move along the optical axis direction or the third direction (Z-axis direction) within the housing 1230.

[0110] Specifically, the lens unit 1220 may include a lens group 1221 and a moving assembly 1222.

[0111] First, the lens group 1221 may include at least one or more lenses. Also, there may be a plurality of lens groups 1221, but hereinafter, it will be described based on one.

[0112] The lens group 1221 is coupled to the moving assembly 1222 and can move in the third direction (Z-axis direction) by the electromagnetic force generated by the first magnet 1252a and the second magnet 1252b coupled to the moving assembly 1222.

[0113] In an embodiment, the lens group 1221 may include a first lens group 1221a, a second lens group 1221b, and a third lens group 1221c. The first lens group 1221a, the second lens group 1221b, and the third lens group 1221c may be sequentially arranged along the optical axis direction. Further, the lens group 1221 may further include a fourth lens group. The fourth lens group may be arranged at the rear end of the third lens group 1221c.

[0114] The first lens group 1221a may be coupled and fixed to the first housing (or fixed assembly). In other words, the first lens group 1221a may not need to move along the optical axis direction.

[0115] The second lens group 1221b can be combined with the first lens assembly 1222a and move in the third direction or the optical side direction. Magnification adjustment can be performed by the movement of the first lens assembly 1222a and the second lens group 1221b.

[0116] The third lens group 1221c can be combined with the second lens assembly 1222b and move in the third direction or the optical axis direction. Focus adjustment or autofocusing can be performed by the movement of the third lens group 1221.

[0117] However, it is not limited to such a number of lens groups. The above-described fourth lens group may not be present, or additional lens groups other than the fourth lens group (1121d) may be further arranged.

[0118] The moving assembly 1222 may include an opening region surrounding the lens group 1221. Such a moving assembly 1222 is used in combination with the first and second lens assemblies. The moving assembly 1222 or the lens assembly can move along the optical axis direction (Z-axis direction) within the housing 1230. Also, the moving assembly 1222 can be coupled to the lens group 1221 in various ways. Further, the moving assembly 1222 may include a groove on its side surface and can be coupled to the first magnet 1252a and the second magnet 1252b through the groove. A coupling member or the like may be applied to the groove.

[0119] Also, the moving assembly 1222 may be coupled to elastic parts (not shown) at its upper end and rear end. Therefore, the moving assembly 1222 may move in the third direction (Z-axis direction) and be supported by the elastic parts (not shown). That is, the position of the moving assembly 1222 can be maintained in the third direction (Z-axis direction). The elastic parts (not shown) may be composed of various elastic elements such as leaf springs.

[0120] The moving assembly 1222 is located within the housing 1230 and may include the first lens assembly 1222a and the second lens assembly 1222b.

[0121] The region where the third lens group is seated by the second lens assembly 1222b may be located at the rear end of the first lens assembly 1222a. In other words, the region where the third lens group 1221c is seated by the second lens assembly 1222b may be located between the region where the second lens group 1221b is seated by the first lens assembly 1222a and the image sensor.

[0122] The first guide portion and the second guide portion of the first lens assembly 1222a and the second lens assembly 1222b can face each other. The first guide portion and the second guide portion may be located on the first side portion 1232a and the second side portion 1232b of the housing 1230 (or the second housing) described later. The first guide portion and the second guide portion may be integrally or separately arranged on the first side portion 1232a and the second side portion 1232b of the housing 1230 (or the second housing) described later. In the following, the integrated type will be described as a reference.

[0123] In addition, an optical drive magnet can be seated on the outer surfaces of the first lens assembly 1222a and the second lens assembly 1222b. For example, a second magnet 1252b can be seated on the outer surface of the second lens assembly 1222b. A first magnet 1252a can be seated on the outer surface of the first lens assembly 1222a. In this specification, the first lens assembly 1222a may be used interchangeably with the "first bobbin". The second lens assembly 1222b may be used interchangeably with the "second bobbin".

[0124] The housing 1230 may be arranged between the lens unit 1220 and a shield can (not shown). Further, the housing 1230 may be arranged so as to surround the lens unit 1220.

[0125] The housing 1230 may include a first housing 1231, a second housing 1232, and a cover base CB. The first housing 1231 is coupled to the first lens group 1221a and can also be coupled to the first camera actuator described above. The first housing 1231 may be located in front of the second housing 1232. The first housing may also be referred to as a "fixed assembly", "fixed lens assembly", "fixed lens housing", etc. The second housing may also be referred to as a "main barrel", "lens barrel", "barrel", etc.

[0126] Also, the second housing 1232 may be located at the rear end of the first housing 1231. The first and second lens assemblies and the lens unit 1220 can be seated inside the second housing 1232.

[0127] The housing 1230 (or the second housing 1232) may have holes formed in its side portions. The first coil 1251a and the second coil 1251b may be disposed in the holes. The holes may be located corresponding to the grooves of the moving assembly 1222 described above. At this time, there may be a plurality of the first coil 1251a and the second coil 1251b.

[0128] In an embodiment, the housing 1230 (particularly, the second housing 1232) may include a first side portion 1232a and a second side portion 1232b. The first side portion 1232a and the second side portion 1232b may be located corresponding to each other. For example, the first side portion 1232a and the second side portion 1232b may be symmetrically arranged with respect to the third direction. The optical drive coil 1251 may be located on the first side portion 1232a and the second side portion 1232b. Also, the substrate portion 1270 can be seated on the outer surfaces of the first side portion 1232a and the second side portion 1232b. In other words, the first substrate may be located on the outer surface of the first side portion 1232a, and the second substrate may be located on the outer surface of the second side portion 1232b.

[0129] The cover base CB may be disposed between the first housing 1231 and the second housing 1232. The cover base CB can prevent the lens (for example, the first lens group) disposed or accommodated in the first housing 1231 (or the fixed assembly) from being damaged by impact. That is, the cover base CB can absorb the impact of the moving assembly when the moving assembly in the second housing 1232 moves. Further, the first-1 stopper ST1a and the first-2 stopper ST1b, which will be described later, may be located on the rear surface or the lower surface of the cover base CB. For example, the first-1 stopper ST1a and the first-2 stopper ST1b may be located between the cover base CB and the moving assembly (for example, the first lens assembly). Thereby, the moving assembly can come into primary contact with the first-1 stopper ST1a and the first-2 stopper ST1b. Thereby, the reliability of the lens group can be improved.

[0130] Furthermore, the cover base CB can be coupled to the first housing 1231 and the second housing 1232 by a joining member (for example, epoxy). Thereby, by adjusting the shape of the cover base CB, the coupling with the first housing 1231 and the second housing 1232 can be easily performed. Also, by adding the cover base CB, the manufacturability of at least one of the first housing 1231 and the second housing 1232 can be ensured.

[0131] Furthermore, the first guide portion and the second guide portion may be located on the first side portion 1232a and the second side portion 1232b of the housing 1230 (particularly, the second housing 1232).

[0132] The first guide portion and the second guide portion may be located corresponding to each other. For example, the first guide portion and the second guide portion may be located opposite to each other with reference to the third direction (Z-axis direction). Also, at least a part of the first guide portion and the second guide portion may overlap each other in the second direction (Y-axis direction).

[0133] The first guide part and the second guide part may include at least one groove (e.g., a guide groove) or a recess. Further, the first ball B1 or the second ball B2 can be seated in the groove or the recess. The second camera actuator 1200 may further include a ball part. The ball part may include the first ball B1 and the second ball B2. By the ball part, the first and second lens assemblies can move along the optical axis direction. At this time, the ball part may include at least one rolling member and a ball. Further, at least one ball can move along the guide groove of the first and second guide parts. Further, at least one ball can move along the recess or the groove of the first and second lens assemblies. Thereby, the first ball B1 or the second ball B2 can move in the third direction (Z-axis direction) within the guide groove of the first guide part or the guide groove of the second guide part.

[0134] Alternatively, the first ball B1 or the second ball B2 can move in the third direction along a rail formed inside the first side portion 1232a of the housing 1230 or a rail formed inside the second side portion 1232b of the housing 1230.

[0135] Thereby, the first lens assembly 1222a and the second lens assembly 1222b can move in the third direction or the optical axis direction. At this time, the second lens assembly 1222b may be arranged adjacent to or near the image sensor than the first lens assembly 1222a.

[0136] According to an embodiment, the first ball B1 may contact the first lens assembly 1222a. The second ball B2 may contact the second lens assembly 1222b. Thereby, depending on the position, the first ball B1 may at least partially overlap the second ball B2 along the first direction (X-axis direction).

[0137] Further, the first guide portion and the second guide portion may include a first guide groove facing the first recess RS1. Further, the first guide portion and the second guide portion may include a second guide groove facing the second recess RS2. The first guide groove and the second guide groove may be grooves extending in the third direction (Z-axis direction). Further, the first guide groove and the second guide groove may be grooves having different shapes from each other. For example, the first guide groove may be a groove with inclined side surfaces, and the second guide groove may be a groove with side surfaces perpendicular to the bottom surface.

[0138] Further, there may be a plurality of the first guide grooves or the second guide grooves. Further, a plurality of balls having at least partially different diameters may be positioned in the plurality of guide grooves.

[0139] The second magnet 1252b may be positioned to face the second coil 1251b. Further, the first magnet 1252a may be positioned to face the first coil 1251a.

[0140] For example, at least one of the first coil 1251a and the second coil 1251b may be composed of at least one coil. For example, the first coil 1251a may be composed of a plurality of coils. The second coil 1251b may be composed of a plurality of coils. Further, even when the first coil and the second coil are one coil, the long stroke described later can be realized.

[0141] In an embodiment, the optical drive coil 1251 may be composed of sub-coils sequentially arranged along the optical axis direction (Z-axis direction). For example, a plurality of sub-coils may be sequentially arranged in the optical axis direction on each of both sides of the main barrel 1232. The second housing may be used interchangeably with the "main barrel".

[0142] In this embodiment, the optical driving unit (or driving unit, 1250) may include a first driving unit and a second driving unit. The first driving unit can provide a driving force for moving the first lens assembly 1222a along the optical axis direction. The first driving unit may include a first coil 1251a and a first magnet 1252a. Also, the first driving unit may include a first driving coil and a first driving magnet. Accordingly, the first coil 1251a may also be referred to as the "first driving coil". Also, the first magnet 1252a may also be referred to as the "first driving magnet".

[0143] Also, the second driving unit can provide a driving force for moving the second lens assembly 1222b along the optical axis direction. The second driving unit may include a second coil 1251b and a second magnet 1252b.

[0144] Also, the second driving unit may include a second driving coil and a second driving magnet. Accordingly, the second coil 1251b may also be referred to as the "second driving coil". Also, the second magnet 1252b may also be referred to as the "second driving magnet".

[0145] The elastic part (not shown) may include a first elastic member (not shown) and a second elastic member (not shown). The first elastic member (not shown) can be coupled to the upper surface of the moving assembly 1222. The second elastic member (not shown) can be coupled to the lower surface of the moving assembly 1222. Also, the first elastic member (not shown) and the second elastic member (not shown) may be formed of a leaf spring as described above. Also, the first elastic member (not shown) and the second elastic member (not shown) can provide elasticity for the movement of the moving assembly 1222. However, it is not limited to the above-described positions, and the elastic part may be disposed at various positions.

[0146] In addition, the driving unit 1250 can provide a driving force for moving the lens unit 1220 in the third direction (Z-axis direction). Such a driving unit 1250 may include an optical driving coil 1251 and an optical driving magnet 1252. The optical driving coil 1251 and the optical driving magnet 1252 may be positioned to face each other. For example, the first driving coil 1251a and the first driving magnet 1252a may be positioned to face each other. Also, the second driving coil 1251b and the second driving magnet 1252b may be positioned to face each other. The first driving coil 1251a may be arranged on one side along the second direction within the housing, and the second driving coil 1251a may be arranged on the other side along the second direction within the housing.

[0147] Furthermore, the driving unit 1250 may further include a Hall sensor unit. The Hall sensor unit 1253 includes at least one first Hall sensor 1253a and a second Hall sensor 1253b, and may be located inside or outside the optical driving coil 1251.

[0148] The moving assembly can move in the third direction (Z-axis direction) due to the electromagnetic force formed between the optical driving coil 1251 and the optical driving magnet 1252.

[0149] The optical driving coil 1251 may include a first coil 1251a and a second coil 1251b. Also, as described above, the first coil 1251a and the second coil 1251b may be composed of a plurality of sub-coils. Also, the first coil 1251a and the second coil 1251b may be arranged in holes formed in the side portions of the housing 1230. Also, the first coil 1251a and the second coil 1251b can be electrically connected to the substrate portion 1270. Therefore, the first coil 1251a and the second coil 1251b can receive supply such as current through the substrate portion 1270.

[0150] In addition, the optical driving coil 1251 can be coupled to the substrate portion 1270 via a yoke or the like.

[0151] Also, in the embodiment, the optical drive coil 1251 is a fixed element together with the substrate portion 1270. In contrast, the optical drive magnet 1252 is a moving element that moves in the optical axis direction (Z-axis direction) together with the first and second assemblies.

[0152] The optical drive magnet 1252 may include a first magnet 1252a and a second magnet 1252b.

[0153] In the embodiment, the first coil 1251a may include a first sub-coil SC1a and a second sub-coil SC2a. The first sub-coil SC1a and the second sub-coil SC2a may be sequentially arranged in the optical axis direction. The first sub-coil SC1a may be positioned adjacent to the first camera actuator closer than the second sub-coil SC2a.

[0154] Also, the second coil 1251b may include a third sub-coil SC1b and a fourth sub-coil SC2b. The third sub-coil SC1b and the fourth sub-coil SC2b may be sequentially arranged in the optical axis direction. The third sub-coil SC1b may be positioned adjacent to the first camera actuator closer than the fourth sub-coil SC2b.

[0155] Also, the first magnet 1252a may face the first sub-coil SC1a and the second sub-coil SC2a. The second magnet 1252b may face the third sub-coil SC1b and the fourth sub-coil SC2b. The first sub-coil SC1a may be positioned to overlap with the third sub-coil SC1b in the second direction. The second sub-coil SC2a may be positioned to overlap with the fourth sub-coil SC2b in the second direction. In this way, the first magnet 1252a and the second magnet 1252b may be arranged to face the two sub-coils identically to each other.

[0156] Furthermore, it can also be described that the coils of the first and second drive units by the second camera actuator include the first sub-coils SC1a and SC1b and the second sub-coils SC2a and SC2b. However, for the sub-coils that drive the second lens assembly in the specification, they are described by mixing with the third sub-coil and the fourth sub-coil.

[0157] The first sub-coil SC1a and the second sub-coil SC2a may be spaced apart from each other in the optical axis direction. The first sub-coil SC1a and the second sub-coil SC2a can be connected in parallel with each other. For example, any one of one end and the other end of the first sub-coil SC1a can be connected to any one of one end and the other end of the second sub-coil SC2a at one node. Also, the other one of one end and the other end of the first sub-coil SC1a can be connected to the other one of one end and the other end of the second sub-coil SC2a at another node. That is, the current applied to the first sub-coil SC1a and the second sub-coil SC2a can be distributed to each sub-coil. Thereby, the first sub-coil SC1a and the second sub-coil SC2a are electrically connected in parallel, and heat generation can be reduced.

[0158] Further, the polarity of one surface of the first drive magnet 1252a facing the first drive coils SC1a and SC2a may be the same as the polarity of one surface of the second drive magnet 1252b facing the second drive coils SC1b and SC2b. For example, the inner surfaces of the first drive magnet 1252a and the second drive magnet 1252b may have either one of the N pole and the S pole (e.g., the N pole). The outer surfaces of the first drive magnet 1252a and the second drive magnet 1252b may have the other one of the N pole and the S pole (e.g., the S pole). Here, the inner surface is a side surface adjacent to the optical axis with respect to the optical axis, and the outer surface may be a side surface far from the optical axis. Further, the first magnet 1252a may have a first pole on a first surface BSF1 facing an optical drive coil (e.g., the first coil). Further, the first magnet 1252a may have a second pole on a second surface BSF2 which is the opposite surface of the first surface BSF1. The second magnet 1252b may have a first pole on a first surface BSF1 facing an optical drive coil (e.g., the second coil). Further, the second magnet 1252b may have a second pole on a second surface BSF2 which is the opposite surface of the first surface BSF1. The first pole may be either one of the N pole and the S pole. Further, the second pole may be the other one of the N pole and the S pole.

[0159] Alternatively, the first drive magnet and the second drive magnet may have a structure in which the N pole / S pole or the S pole / N pole are sequentially arranged along the optical axis direction.

[0160] Further, the third sub-coil SC1b and the fourth sub-coil SC2b may be spaced apart from each other in the optical axis direction. The third sub-coil SC1b and the fourth sub-coil SC2b can be connected in parallel to each other. For example, either one of one end and the other end of the third sub-coil SC1b can be connected to either one of one end and the other end of the fourth sub-coil SC2b at a node.

[0161] The first magnet 1252a and the second magnet 1252b may be arranged in the grooves of the moving assembly 1222 described above and may be positioned to correspond to the first coil 1251a and the second coil 1251b. Also, the optical drive magnet 1252 can be coupled with the first and second lens assemblies (or the moving assembly) together with the yoke described later.

[0162] The yoke portion 1240 may be arranged on the substrate portion 1270. The yoke portion 1240 can form an attractive force with adjacent magnets and maintain the postures of the first and second lens assemblies. That is, the yoke portion 1240 can provide a holding force for the moving assembly. The yoke portion 1240 may include a first yoke portion 1241 and a second yoke portion 1242. The first yoke portion 1241 may be arranged on the first substrate 1271. The second yoke portion 1242 may be arranged on the second substrate 1272.

[0163] The base portion 1260 may be located between the lens portion 1220 and the image sensor in the circuit board. Components such as filters may be fixed to the base portion 1260. Also, the base portion 1260 may be arranged to surround the above-described image sensor. With such a configuration, the image sensor is free from foreign matters and the like, so the reliability of the element can be improved. However, in some of the following drawings, this will be removed for explanation.

[0164] Also, the second camera actuator 1200 may be a Zoom actuator or an AF (Auto Focus) actuator. For example, the second camera actuator can support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an auto-focusing function or a zoom function.

[0165] Also, the second camera actuator may be a fixed zoom or a continuous zoom. For example, the second camera actuator can provide the movement of the lens group 1221.

[0166] In addition, the second camera actuator may be composed of a plurality of lens assemblies. For example, in addition to the first lens assembly 1222a and the second lens assembly 1222b, at least one or more of a third lens assembly (not shown) and a guide pin (not shown) may be arranged in the second camera actuator. The above-described content can be applied to this. Therefore, the second camera actuator can perform a high-precision zooming function through the drive unit.

[0167] The image sensor may be located inside or outside the second camera actuator. In an embodiment, as shown in the figure, the image sensor may be located outside the second camera actuator. For example, the image sensor may be located on a circuit board. The image sensor can receive light and convert the received light into an electrical signal. Also, the image sensor may be composed of a plurality of pixels in an array form. Also, the image sensor may be located on the optical axis.

[0168] The substrate portion 1270 may be in contact with the side portion of the housing. For example, the substrate portion 1270 may be located on the outer surfaces (the first side surface) of the first side portion and the second side portion (the second side surface) of the housing, particularly the second housing, and may be in contact with the first side surface and the second side surface.

[0169] The second camera actuator may further include first stoppers ST1a, ST1b arranged at one end (or the front end) and second stoppers ST2a, ST2b arranged at the other end (or the rear end) inside the housing (or the second housing 1232).

[0170] The first stopper ST1 may be located at one end in the housing. For example, the first stopper ST1 may be located at the end in the opposite direction of the optical axis direction in the second housing or the main barrel 1232. In an embodiment, the first stopper ST1 may be located on the inner wall or the inner side wall of the housing or the main barrel 1232. The first stopper ST1 may be located on the first inner wall among the first inner wall and the second inner wall facing each other along the optical axis direction in the main barrel 1232. Further, the first stopper ST1 may include a first-1 stopper ST1a disposed on one side and a first-2 stopper ST1b disposed on the other side. For example, the first-1 stopper ST1a may be disposed on one side of the first inner wall. Also, the first-2 stopper ST1b may be disposed on the other side of the first inner wall. The first-1 stopper ST1a may be located adjacent to the first side portion. The first-2 stopper ST1b may be located adjacent to the second side portion. One side and the other side may mean one surface and the opposite side in the second direction.

[0171] Alternatively, the first-1 stopper ST1a may overlap with the guide portion of the first lens assembly in the optical axis direction. The first-2 stopper ST1b may overlap with the lens protrusion of the first lens assembly in the optical axis direction.

[0172] Further, the first stopper ST1 may further include a first-3 stopper disposed on the other side in the main barrel 1232. The first-3 stopper may be located so as to overlap with the guide portion of the second lens assembly 1222b in the optical axis direction.

[0173] Further, the second stopper ST2 may be disposed at the other end in the second housing or the main barrel 1232. For example, the second stopper ST2 may be located at the end in the optical axis direction in the second housing or the main barrel 1232. In an embodiment, the second stopper ST2 may be located on the inner wall or the inner wall of the housing or the main barrel 1232. The second stopper ST2 may be located on the second inner wall of the first inner wall and the second inner wall facing each other along the optical axis direction in the main barrel 1232. The first inner wall can be adjacent to the first camera actuator and the first lens assembly. The second inner wall can be adjacent to the image sensor.

[0174] Further, the second stopper ST2 may include a second-1 stopper ST2a disposed on one side and a second-2 stopper ST2b disposed on the other side. The second-1 stopper ST2a may be located adjacent to the first side portion. The second-2 stopper ST2b may be located adjacent to the second side portion. For example, the second-1 stopper ST2a may be disposed on one side of the first inner wall. Also, the second-2 stopper ST2b may be disposed on the other side of the first inner wall.

[0175] Referring to FIGS. 7 and 8, in the following, the description will be made with reference to one coil with respect to the electromagnetic force. In the camera device according to the embodiment, an electromagnetic force DEM1 is generated between the first magnet 1252a and the first coil 1251a, and the first lens assembly 1222a is horizontal to the optical axis, that is, in the third direction (Z-axis direction) or in the opposite direction of the third direction, via the first ball B1, It can move along the rail located on the inner surface of the housing. At this time, the first magnet 1252a and the second magnet 1252b do not move to the region facing the edges of the first and second sub-coils. As a result, an electromagnetic force is formed based on the flow of current in the adjacent region between the first sub-coil and the second sub-coil.

[0176] As described above, in the camera device according to the embodiment, the first magnet 1252a can be provided in the first lens assembly 1222a, for example, by a single-pole magnetization method. For example, in the embodiment, the surface (first surface) facing the outer surface of the first magnet 1252a may be the S pole. Also, the outer surface of the first magnet 1252a may be the surface facing the first coil 1251a. Further, the surface opposite to the first surface may be the N pole. Thus, only one of the N pole and the S pole may be positioned to face the first coil 1251a. Here, the description will be made based on the assumption that the outer surface of the first magnet 1252a is the S pole. Furthermore, the first coil 1251a is composed of a plurality of sub-coils, and the current in the plurality of sub-coils may flow in opposite directions to each other. That is, the current may flow in the same manner as "DE1" in the region where the first sub-coil SC1a is adjacent to the second sub-coil SC2a.

[0177] In other words, the first region of the first sub-coil SC1a and the second region of the second sub-coil SC2a may have the same current direction. The first region of the first sub-coil SC1a is a region that overlaps with the first drive magnet 1252a in a direction perpendicular to the optical axis direction (second direction) and is arranged perpendicular to the optical axis direction (for example, arranged along the first direction). The second region of the second sub-coil SC2a is a region that overlaps with the first drive magnet 1252a in a direction perpendicular to the optical axis direction (second direction) and is arranged perpendicular to the optical axis direction (for example, arranged along the first direction).

[0178] Also, as shown in the figure, in the embodiment, when a magnetic force is applied in the second direction (Y-axis direction) at the S pole of the first magnet 1252a and a current (DE1) flows in the first direction (X-axis direction) in the first coil 1251a, an electromagnetic force DEM1 can act in the third direction (Z-axis direction) due to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0179] At this time, since the first coil 1251a is fixed to the side portion of the housing, the first lens assembly 1222a in which the first magnet 1252a is disposed can move in the opposite direction of the Z-axis direction by the electromagnetic force DEM1 according to the current direction. That is, the optical drive magnet can move in the opposite direction of the electromagnetic force applied to the optical drive coil. Further, the direction of the electromagnetic force can be changed by the current of the coil and the magnetic force of the magnet.

[0180] Therefore, the first lens assembly 1222a can move along a rail located on the inner surface of the housing via the first ball in the third direction or a direction parallel to the optical axis direction (bidirectional). At this time, the electromagnetic force DEM1 can be controlled in proportion to the current (DE1) applied to the first coil 1251a.

[0181] The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 in which the first ball or the second ball is seated. Further, the first lens assembly 1222a or the second lens assembly 1222b may include a second recess RS2 in which the first ball or the second ball is seated. A plurality of the first recesses RS1 and the second recesses RS2 may be provided. The length of the first recess RS1 in the optical axis direction (Z-axis direction) may be preset. Also, the length of the second recess RS2 in the optical axis direction (Z-axis direction) may be preset. Thereby, the moving distance of the first ball and the second ball in the optical axis direction can be adjusted within each recess. In other words, the first recess RS1 or the second recess RS2 may be a stopper for the first and second balls.

[0182] Also, in the camera device according to the embodiment, the second magnet 1252b may be provided in the second lens assembly 1222b by, for example, a single-pole magnetization method or the like.

[0183] Furthermore, the first coil 1251a is composed of a plurality of sub - coils, and the currents in the plurality of sub - coils may flow in opposite directions to each other. That is, the current in the region adjacent to the second sub - coil SC2a in the first sub - coil SC1a may flow in the same way as "DE1".

[0184] Also, in the embodiment, either one of the N - pole and the S - pole of the second magnet 1252b may be positioned to face the second coil 1251b. Also, in the embodiment, the surface (the first surface) facing the outer surface of the second magnet 1252b may be the S - pole. Also, the first surface may be the N - pole. In the following, the description will be based on the assumption that the first surface is the N - pole as shown in the figure.

[0185] Furthermore, the second coil 1251b is composed of a plurality of sub - coils, and the currents in the plurality of sub - coils may flow in opposite directions to each other. That is, the current in the region adjacent to the second sub - coil SC2b in the first sub - coil SC1b may flow in the same way as "DE2".

[0186] In the embodiment, when a magnetic force DM2 is applied in the second direction (Y - axis direction) at the first surface (N - pole) of the second magnet 1252b and a current DE2 flows in the first direction (X - axis direction) in the second coil 1251b corresponding to the N - pole, an electromagnetic force DEM2 can act in the third direction (Z - axis direction) due to the interaction of electromagnetic forces (for example, Fleming's left - hand rule).

[0187] At this time, since the second coil 1251b is fixed to the side portion of the housing, the second lens assembly 1222b in which the second magnet 1252b is disposed can move in the opposite direction of the Z-axis direction by the electromagnetic force DEM2 according to the current direction. For example, as described above, the direction of the electromagnetic force can be changed by the current of the coil and the magnetic force of the magnet. Therefore, the second lens assembly 1222b can move along the rail located on the inner surface of the housing via the second ball B2 in a direction parallel to the third direction (Z-axis direction). At this time, the electromagnetic force DEM2 can be controlled in proportion to the current DE2 applied to the second coil 1251b.

[0188] Referring to FIG. 9, in the camera device according to the embodiment, the driving unit can provide driving forces (F3A, F3B, F4A, F4B) for moving the first lens assembly 1222a and the second lens assembly 1222b of the lens unit 1220 along the third direction (Z-axis direction). Such a driving unit may include the optical driving coil 1251 and the optical driving magnet 1252 as described above. Further, due to the electromagnetic force formed between the optical driving coil 1251 and the optical driving magnet 1252, the lens unit 1220 can move along the third direction (Z-axis direction).

[0189] At this time, the first coil 1251a and the second coil 1251b may be disposed in holes formed in the side portions (for example, the first side portion and the second side portion) of the housing 1230. Further, the second coil 1251b can be electrically connected to the second substrate 1272. The first coil 1251a can be electrically connected to the first substrate 1271. Thereby, the first coil 1251a and the second coil 1251b can receive the supply of a driving signal (for example, current) from a driving driver on the circuit board of the circuit board 1300 via the substrate portion 1270.

[0190] At this time, the first lens assembly 1222a with the first magnet 1252a fixed by the electromagnetic forces F3A and F3B between the first coil 1251a and the first magnet 1252a can move along the third direction (Z-axis direction). Also, the second lens group 1221b fixed to the first lens assembly 1222a can also move along the third direction.

[0191] Also, the second lens assembly 1222b with the second magnet 1252b fixed by the electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b can move along the third direction (Z-axis direction). Also, the third lens group 1221c fixed to the second lens assembly 1222b can also move along the third direction.

[0192] Accordingly, similar to the above-described content, the movement of the second lens group 1221b and the third lens group 1221c can change the focal length or magnification of the optical system. In an embodiment, the magnification can be changed by the movement of the second lens group 1221b. In other words, zooming can be performed. Also, the focus can be adjusted by the movement of the third lens group 1221c. In other words, auto focusing can be performed.

[0193] Also, the second camera actuator may be a fixed zoom or a continuous zoom depending on the movement method of the second lens group (or the third lens group).

[0194] Furthermore, the first Hall sensor 1253a and the second Hall sensor 1253b may be disposed on at least one of the first sub-coil and the second sub-coil. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may partially overlap in the second direction.

[0195] By driving the first lens assembly, the first lens assembly 1222a may be positioned so as to be maximally adjacent to the first stoppers ST1a and ST1b. At this time, the distance between the first lens assembly 1222a and the guide portion and the first stopper ST1a can be reduced. Also, the distance between the second stopper ST1b and the lens protrusion of the first lens assembly can be reduced.

[0196] That is, if the first lens assembly 1222a moves maximally toward the first camera actuator side, the first lens assembly 1222a can collide with the first stopper ST1a and the second stopper ST1b. The first stopper and the second stopper can collide with the movement of the first lens assembly simultaneously or sequentially. In the present embodiment, the first stopper and the second stopper can collide with the movement of the first lens assembly simultaneously.

[0197] Thereby, even if a lens made of glass is disposed in the first lens assembly 1222a (or the second lens assembly) (for example, at the forefront), the collision can be minimized at the maximum movement position (mecha position) of the first lens assembly 1222a (or the second lens assembly). That is, the phenomenon of lens cracking can be suppressed. For example, at least one of the first lens assembly and the second lens assembly may include a lens including glass. Also, the glass may be positioned outermost within the first lens assembly or the second lens assembly.

[0198] In a modified example, during sequential collision, shock absorption can occur primarily in a guide portion having a large volume or the like, minimizing damage to the first lens assembly.

[0199] Similarly, it can collide with the second stopper ST2b and the second lens assembly 1222b. That is, if the second lens assembly 1222b moves maximally in the image sensor or the optical axis direction, the second lens assembly 1222b can collide with the second stopper ST2b and the second stopper ST2a. Thereby, even if a lens made of glass is arranged in the second lens assembly 1222b, the collision with the maximum movement position (mecha position) of the first lens assembly 1222a can be minimized. That is, the phenomenon of lens cracking can be suppressed. The same applies to the case of the modification.

[0200] In other words, when the first lens assembly 1222a moves, the first stopper ST1a and the first stopper ST1b can contact the first lens assembly 1222a. When the first lens assembly 1222a moves maximally in mecha to mecha, the first lens assembly 1222a can contact the first stoppers ST1a and ST1b. For example, the first lens assembly 1222a can move to an end in the optical axis direction or an end in the opposite direction of the optical axis direction. At this time, the first lens assembly 1222a can move to a point where it contacts the first stopper or the second stopper. For example, when the first lens assembly 1222a moves, the camera module can be in a tele or wide state. When the first lens assembly 1222a contacts the first stopper, it can be in a wide state, and when the first lens assembly 1222a contacts the second stopper, it can be in a tele state.

[0201] With such a first stopper, the impact on the movement of the first lens assembly 1222a and the second lens assembly 1222b can be reduced. Thereby, as described above, the reliability of the first lens assembly 1222a and the second lens assembly 1222b, and the reliability of the second lens group and the third lens group inside can be improved. Furthermore, the movement ranges of the first lens assembly 1222a and the second lens assembly 1222b are restricted, and driving such as an accurate magnification can be performed.

[0202] FIG. 10 is a perspective view of a partial configuration of a second camera actuator according to an embodiment.

[0203] Referring to FIG. 10, the first lens assembly 1222a and the second lens assembly 1222b may be spaced apart in the optical axis direction (Z-axis direction).

[0204] The second guide portion may be disposed to face the first guide portion. In the embodiment, the first guide portion and the second guide portion may at least partially overlap in the second direction (Y-axis direction). With such a configuration, the space efficiency of the drive portion for moving the first and second lens assemblies in the second camera actuator is improved, and the second camera actuator can be easily miniaturized.

[0205] As described above, the first ball, the first coil, etc. may be disposed adjacent to the first guide portion, and the second ball, the second coil, etc. may be disposed adjacent to the second guide portion as described above.

[0206] Further, according to the embodiment, each of the first and second lens assemblies 1222a and 1222b may include yokes YK1 and YK2 disposed on the side surfaces.

[0207] The first yoke YK1 may be located on the side surface of the first lens assembly 1222a. The second yoke YK2 may be located on the side surface of the second lens assembly 1222b. Such first yoke YK1 and second yoke YK2 may at least partially extend outward. Thereby, the first yoke YK1 can surround at least a part of the side surface of the first magnet 1252a. As shown in the figure, the first yoke YK1 may be configured with various structures surrounding the inner surface and a part of the side surface of the first magnet 1252a. For example, the first yoke YK1 may be composed of divided members, and each divided member may be located on the inner surface and the side surface of the first magnet 1252a. Thereby, the coupling force between the unipolar magnetized optical drive magnet and the yoke can be improved. Similarly, the second yoke YK2 can surround at least a part of the side surface of the second magnet 1252b. As shown in the figure, the second yoke YK2 may be configured with various structures surrounding the inner surface and a part of the side surface of the second magnet 1252b. For example, the second yoke YK2 may be composed of divided members, and each divided member may be located on the inner surface and the side surface of the second magnet 1252b.

[0208] Furthermore, the yokes may be positioned to be coupled to each other not only with respect to the optical drive magnet but also with respect to the optical drive coil.

[0209] Also, a plurality of balls may be located on the outer surface of the lens assembly. As described above, the first ball may be located on the outer surface of the first lens assembly 1222a. The second ball may be located on the outer surface of the second lens assembly 1222b.

[0210] The first ball and the second ball may be composed of a plurality. For example, a plurality of first balls may be arranged side by side along the optical axis direction (Z-axis direction) in one recess of the first lens assembly 1222a. Also, a plurality of second balls may be arranged side by side along the optical axis direction (Z-axis direction) in one recess of the second lens assembly 1222b.

[0211] For example, the second ball B2 may include a first sub-ball B2a, a second sub-ball B2b, and a third sub-ball B2c. The first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may be arranged side by side along the optical axis direction. Thereby, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may at least partially overlap each other in the optical axis direction.

[0212] Also, the first sub-ball B2a and the second sub-ball B2b may be located at the edge among the plurality of balls. The third sub-ball B2c may be located between the first sub-ball B2a and the second sub-ball B2b.

[0213] The plurality of balls may have the same or different diameters from each other. For example, at least a part of the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have the same diameters R1, R3, and R2 with each other. Also, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have different diameters R1, R3, and R2 from each other.

[0214] In an embodiment, the diameters R1 and R3 of the balls (the first and second sub-balls) located at the edge may be smaller than the diameter R2 of the ball (the third sub-ball) located inside the plurality of balls. For example, the diameters R1 and R3 of the first sub-ball B2a and the second sub-ball B2b may be smaller than the diameter R2 of the third sub-ball B2c. With such a configuration, the movement of the lens assembly by the plurality of balls can be accurately performed without tilting to one side.

[0215] The description of such a plurality of balls can be similarly applied to the first ball.

[0216] In addition, there are a plurality of optical drive magnets as described above, and they may be composed of a first magnet and a second magnet. Further, the first magnet and the second magnet may be arranged such that the same poles face each other and are on the outside. That is, the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet may have a first pole. Also, the second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet may have a second pole.

[0217] FIG. 11 is a drawing showing an optical drive coil, an optical drive magnet, and a yoke according to an embodiment, and FIG. 12 is a drawing for explaining the movement of the optical drive magnet by a drive unit according to the embodiment.

[0218] Referring to FIGS. 11 to 12, the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be the same as the length W6 of the second sub-coil SC2a in the optical axis direction (Z-axis direction). With such a configuration, the driving force control by the first sub-coil SC1a and the second sub-coil SC2a can be easily performed.

[0219] In addition, the total length W1 (or maximum length) of the optical drive coil in the optical axis direction (Z-axis direction) may be greater than the length W2 (maximum length) of the optical drive magnet 1252a in the optical axis direction (Z-axis direction). With such a configuration, the stroke by the optical drive magnet can be maximized. Further, a long stroke can be performed by a unipolar magnetized optical drive magnet.

[0220] In the embodiment, the maximum movement distance MD of the first lens assembly in the optical axis direction is greater than the length in the short axis direction (first direction) of the hole (or hollow portion) of the first sub-coil SC1a, and may be the same as or smaller than the length W3 in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the first sub-coil SC1a.

[0221] Further, the maximum moving distance MD of the first lens assembly may be greater than the length in the minor axis direction (first direction) of the hole (or hollow portion) of the second sub-coil SC2a, and may be the same as or smaller than the length W4 in the major axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the second sub-coil SC2a.

[0222] Also, in the embodiment, the maximum moving distance of the second lens assembly in the optical axis direction is greater than the length in the minor axis direction (first direction) of the hole (or hollow portion) of the third sub-coil SC1b, and may be the same as or smaller than the length in the major axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the third sub-coil SC1b.

[0223] Also, the maximum moving distance of the first lens assembly may be greater than the length in the minor axis direction (first direction) of the hole (or hollow portion) of the fourth sub-coil SC2b, and may be the same as or smaller than the length in the major axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the fourth sub-coil SC2b.

[0224] Furthermore, the length W3 in the optical axis direction of the inner hole of the first sub-coil SC1a and the length W4 in the optical axis direction of the inner hole of the second sub-coil SC2a may be the same.

[0225] Also, the length W2 in the optical axis direction (Z-axis direction) of the drive magnet 1252a may be greater than the length W3 in the optical axis direction of the inner hole of the first sub-coil SC1a. Also, the length W2 in the optical axis direction (Z-axis direction) of the drive magnet 1252a may be greater than the length W4 in the optical axis direction of the inner hole of the second sub-coil SC2a. Thereby, the optical drive magnet can move along the optical axis within the entire length in the optical axis direction of the optical drive coil.

[0226] Also, the length W2 in the optical axis direction (Z-axis direction) of the optical drive magnet (or the first and second drive magnets) may be greater than the length in the optical axis direction of any one of the hollow portions (or holes) of each sub-coil (the first sub-coil to the fourth sub-coil), such as W3 and W4.

[0227] The length W2 (maximum length) of the optical drive magnet in the optical axis direction (Z-axis direction) may be smaller than the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction).

[0228] With such a configuration, no back electromotive force is generated during the movement of the lens assembly along the optical axis direction, and a long stroke can be realized.

[0229] The length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be 0.6 times or less of the maximum length W1 of the corresponding first drive coil in the optical axis direction. Preferably, the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be 0.55 times or less of the maximum length W1 of the corresponding first drive coil in the optical axis direction. More preferably, the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be 0.5 times or less of the maximum length W1 of the corresponding first drive coil in the optical axis direction. Thereby, the camera device can provide a long stroke in a state where the back electromotive force is minimized.

[0230] The maximum movement distance MD of the first lens assembly in the optical axis direction may be smaller than the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction). For example, the maximum movement distance MD of the first lens assembly in the optical axis direction may be 0.66 times or more and 0.92 times or less of the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction). Therefore, the generation of the back electromotive force can be suppressed to the maximum extent.

[0231] In addition, in the embodiment, the overall length W1 (or the maximum length) of the optical drive coil in the optical axis direction (Z-axis direction) may be 18 mm to 20 mm. Furthermore, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be 8 mm to 12 mm. Also, the length W3 of the hole (or the length of the long axis direction (optical axis direction or the third direction) of the hollow portion) of the first sub-coil SC1a may be 5.6 mm to 8.7 mm. Also, the length W4 of the hole (or the length of the long axis direction (optical axis direction or the third direction) of the hollow portion) of the second sub-coil SC2a may be 5.6 mm to 8.7 mm.

[0232] The length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be 8 mm to 10 mm. However, as described above, the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be greater than or the same as the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction).

[0233] Also, the length W6 of the second sub-coil SC2a in the optical axis direction (Z-axis direction) may be 8 mm to 10 mm. However, as described above, the length W5 of the second sub-coil SC2a in the optical axis direction (Z-axis direction) may be greater than or the same as the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction).

[0234] In addition, in the embodiment, due to the unipolar magnetization of the optical drive magnet, currents may flow in different directions in the first sub-coil SC1a and the second sub-coil SC2a. For example, in the first sub-coil SC1a, a current may flow in either the clockwise or counterclockwise direction, and in the second sub-coil SC2a, a current may flow in the other one of the clockwise and counterclockwise directions.

[0235] Furthermore, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be greater than the moving distance of the lens assembly in the optical axis direction. That is, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be greater than the maximum moving distance of the first lens assembly or the maximum moving distance of the second lens assembly. With such a configuration, a driving force for movement in the optical axis direction can be safely provided.

[0236] Also, there may be a plurality of lens assemblies as described above, and among the plurality of lens assemblies, the lens assembly arranged at the rear end may have a greater moving distance in the optical axis direction than the lens assembly arranged at the front end.

[0237] For example, the moving distance in the optical axis direction (Z-axis direction) of the first lens assembly 1222a may be smaller than the moving distance in the optical axis direction (Z-axis direction) of the second lens assembly 1222b. In other words, the moving distance of the second lens assembly 1222b in the optical axis direction may be greater than the moving distance of the first lens assembly in the optical axis direction. The first lens assembly 1222a may be located at the front end of the second lens assembly 122b.

[0238] Also, in the camera actuator according to the embodiment, the optical drive magnet 1252a can move from "center" to "maximum movement 1" or "maximum movement 2". Here, in the case of "center", the optical drive magnet 1252a may overlap with the first sub-coil SC1a and the second sub-coil SC2a in the second direction. In other words, the first sub-coil SC1a and the second sub-coil SC2a can all face the optical drive magnet.

[0239] Also, in the case of a coil extending in the first direction that provides a driving force by actual electromagnetic force, the region where the first sub-coil SC1a overlaps with the optical drive magnet 1252a may be the same as the region where the second sub-coil SC2a overlaps with the optical drive magnet 1252a. Thereby, the generation of back electromotive force can be minimized and a long stroke can be realized.

[0240] Also, in the case of "maximum movement 1", it can correspond to the case where the optical drive magnet 1252a moves maximally in the opposite direction of the third direction (Z-axis direction). At this time, the region where the optical drive magnet 1252a overlaps with the first sub-coil SC1a may be larger than that with the second sub-coil SC2a. Further, the optical drive magnet 1252a may at least partially overlap with the inner hole of the first sub-coil SC1a. More specifically, the optical drive magnet 1252a may be separated from the edge of the inner hole of the first sub-coil SC1a by a predetermined isolation distance GP2 in the optical axis direction. With such a configuration, the back electromotive force generated at the end of the first sub-coil SC1a can be reduced. For example, the optical drive magnet 1252a can be moved to the maximum stroke to a region where it does not overlap with the end in the opposite direction of the optical axis direction of the first sub-coil SC1a and in the second direction (Y-axis direction).

[0241] Also, in the case of "maximum movement 2", it can correspond to the case where the optical drive magnet 1252a moves maximally in the third direction (Z-axis direction). At this time, the region where the optical drive magnet 1252a overlaps with the second sub-coil SC2a may be larger than that with the first sub-coil SC1a. Further, the optical drive magnet 1252a may at least partially overlap with the inner hole of the second sub-coil SC2a. More specifically, the optical drive magnet 1252a may be separated from the edge of the inner hole of the second sub-coil SC2a by a predetermined isolation distance GP1 in the optical axis direction. With such a configuration, the back electromotive force generated at the end of the second sub-coil SC2a can be reduced. For example, the optical drive magnet 1252a can be moved to the maximum stroke to a region where it does not overlap with the end in the optical axis direction of the second sub-coil SC2a and in the second direction (Y-axis direction).

[0242] Therefore, even if the length of the optical drive magnet 1252a in the optical axis direction is small, the long stroke of the camera actuator can be efficiently realized through monopole magnetization and the current directions of a plurality of optical drive coils.

[0243] Further, the maximum moving distance of the optical drive magnet 1252a can correspond to the lengths in the optical axis direction of the first and second recesses that accommodate the first ball or the second ball in the first lens assembly described above. Further, the maximum moving distance of the optical drive magnet 1252a can correspond to the distance that the optical drive magnet 1252a moves from the maximum movement 1 to the maximum movement 2 in the optical axis direction (Z-axis direction). Alternatively, the maximum moving distance of the optical drive magnet 1252a can correspond to the interval between the stoppers that limit the movement of the first ball or the second ball in the optical axis direction. Alternatively, the maximum moving distance of the optical drive magnet 1252a can be the maximum distance that the bobbin can move, and can correspond to the isolation distance in the optical axis direction between the stopper located in the optical axis direction with respect to the bobbin and the stopper located in the direction opposite to the optical axis direction.

[0244] FIG. 13 is a perspective view illustrating the housing, coil, and stopper of the second camera actuator according to the embodiment, FIG. 14 is another perspective view illustrating the housing, coil, and stopper of the second camera actuator according to the embodiment, FIG. 15 is a perspective view of the housing of the second camera actuator according to the embodiment, FIG. 16 is a side view of one side of the housing of the second camera actuator according to the embodiment, FIG. 17 is a side view of the other side of the housing of the second camera actuator according to the embodiment, FIG. 18 is a view taken along the line EE' of FIG. 16, FIG. 19 is a view taken along the line FF' of FIG. 16, FIG. 20 is a view taken along the line HH' of FIG. 16, and FIG. 21 is a view taken along the line II' of FIG. 16.

[0245] Referring to FIGS. 13 to 17, in the second camera actuator according to the embodiment, the housing (for example, the second housing) may include a first side portion 1232a and a second side portion 1232b. The first side portion 1232a may be located on one side of the housing. For example, the first side portion 1232a can be adjacent to the first driving portion. Thereby, the first driving portion can easily move the first lens assembly in the optical axis direction.

[0246] The second side portion 1232b may be located on the other side of the housing. The second side portion 1232b can be adjacent to the second driving portion. Thereby, the second driving portion can easily move the second lens assembly in the optical axis direction.

[0247] The first side portion 1232a and the second side portion 1232b may be located opposite to each other. In an embodiment, the first side portion 1232a and the second side portion 1232b may be located corresponding to each other. With the housing or the main barrel 1232, the first side portion 1232a and the second side portion 1232b may be located facing each other.

[0248] As described above, the driving portion may include a first driving portion and a second driving portion. The first driving portion may include a first coil 1251a and a first magnet facing the first coil 1251a. Also, the second driving portion may include a second coil 1251b and a second magnet facing the second coil 1251b.

[0249] In an embodiment, the first coil 1251a may include a first sub-coil SC1a and a second sub-coil SC2a arranged sequentially in the optical axis direction. The first sub-coil SC1a and the second sub-coil SC2a may be arranged on the main barrel 1232. In an embodiment, the first sub-coil SC1a and the second sub-coil SC2a may be located on the first side portion 1232a of the main barrel 1232. For example, the first sub-coil SC1a and the second sub-coil SC2a may be located in a first groove g1 located on the first side portion 1232a of the main barrel 1232.

[0250] More specifically, the first side portion 1232a according to the embodiment may include a first groove g1 and a first reinforcing member RB1.

[0251] The first groove g1 may have the first coil 1251a disposed therein. In an embodiment, the first groove g1 may include a first sub-groove g11 and a second sub-groove g12. The first sub-groove g11 and the second sub-groove g12 may be sequentially arranged along the optical axis direction. The first sub-coil SC1a may be located in the first sub-groove g11. The second sub-coil SC2a may be located in the second sub-groove g12.

[0252] The first reinforcing member RB1 may at least partially overlap the first coil 1251a in the optical axis direction. Also, the first reinforcing member RB1 may be located between the first sub-coil SC1a and the second sub-coil SC2a. For example, the first reinforcing member RB1 may overlap the first sub-coil SC1a and the second sub-coil SC2a along the optical axis direction (Z-axis direction). In other words, the housing 1230 disposed between the first sub-groove g11 and the second sub-groove g12 may overlap the first coil 1251 in the optical axis direction. For example, the housing 1230 disposed between the first sub-groove g11 and the second sub-groove g12 may overlap the first sub-coil SC1a in the optical axis direction. Also, the housing 1230 disposed between the first sub-groove g11 and the second sub-groove g12 may overlap the second sub-coil SC2a in the optical axis direction.

[0253] Also, the first reinforcing member RB1 may be located in the region between the first sub-groove g11 and the second sub-groove g12. For example, the first reinforcing member RB1 may at least partially overlap the first sub-groove g11 and the second sub-groove g12 in the optical axis direction. Also, the first reinforcing member RB1 may be a rib or a reinforcing band of the first groove (or the first sub-groove g11 and the second sub-groove g12). With such a configuration, the reliability (e.g., rigidity) of the main barrel 1232 by the first groove g1 can be improved. Furthermore, warping or a decrease in straightness of the first groove g1 can also be prevented.

[0254] Furthermore, by the first reinforcing member RB1, the first sub-coil SC1a and the second sub-coil SC2a may be arranged separately from each other along the optical axis direction. For example, the distance between the first sub-coil SC1a and the second sub-coil SC2a may be smaller than the width of each sub-coil (e.g., the first sub-coil SC1a and the second sub-coil SC2a). For example, the distance between the first sub-coil SC1a and the second sub-coil SC2a may be 0.5 times or less the width of each sub-coil (e.g., the first sub-coil SC1a and the second sub-coil SC2a). For example, the width of the first reinforcing member RB1 may be smaller than the width of each sub-coil (e.g., the first sub-coil SC1a and the second sub-coil SC2a). For example, the width of the first reinforcing member RB1 in the optical axis direction may be 0.5 times or less the width of each sub-coil (e.g., the first sub-coil SC1a and the second sub-coil SC2a) in the optical axis direction. With such a configuration, the second camera actuator according to the embodiment is easy to miniaturize, improves rigidity, and at the same time can maintain electromagnetic force.

[0255] The second coil 1251b may include a third sub-coil SC1b and a fourth sub-coil SC2b that are sequentially arranged in the optical axis direction. The third sub-coil SC1b and the fourth sub-coil SC2b may be arranged on the main barrel 1232. In the embodiment, the third sub-coil SC1b and the fourth sub-coil SC2b may be located on the second side portion 1232b of the main barrel 1232. For example, the third sub-coil SC1b and the fourth sub-coil SC2b may be located in the second groove g2 located on the second side portion 1232b of the main barrel 1232.

[0256] More specifically, the second side portion 1232b according to the embodiment may include a second groove g2 and a second reinforcing member RB2.

[0257] The second groove g2 may have the second coil 1251b disposed therein. In an embodiment, the second groove g2 may include a third sub-groove g21 and a fourth sub-groove g22. The third sub-groove g21 and the fourth sub-groove g22 may be sequentially arranged along the optical axis direction. The third sub-coil SC1b may be located in the third sub-groove g21. The fourth sub-coil SC2b may be located in the fourth sub-groove g22.

[0258] The second reinforcing member RB2 may at least partially overlap with the second coil 1251b in the optical axis direction. Also, the second reinforcing member RB2 may be located between the third sub-coil SC1b and the fourth sub-coil SC2b. For example, the second reinforcing member RB2 may overlap with the third sub-coil SC1b and the fourth sub-coil SC2b along the optical axis direction (Z-axis direction).

[0259] Also, the second reinforcing member RB2 may be located in the region between the third sub-groove g21 and the fourth sub-groove g22. For example, the second reinforcing member RB2 may at least partially overlap with the third sub-groove g21 and the fourth sub-groove g22 in the optical axis direction. Also, the second reinforcing member RB2 may be a rib or a reinforcing band of the second groove (or the third sub-groove g21 and the fourth sub-groove g22). With such a configuration, the reliability (e.g., rigidity) of the main barrel 1232 by the second groove g2 can be improved. Furthermore, warping or a decrease in straightness of the second groove g2 can also be prevented.

[0260] Furthermore, by the second reinforcing member RB2, the third sub-coil SC1b and the fourth sub-coil SC2b may be spaced apart from each other along the optical axis direction. For example, the distance between the third sub-coil SC1b and the fourth sub-coil SC2b may be smaller than the width of each sub-coil (e.g., the third sub-coil SC1b and the fourth sub-coil SC2b). For example, the distance between the third sub-coil SC1b and the fourth sub-coil SC2b may be 0.5 times or less the width of each sub-coil (e.g., the third sub-coil SC1b and the fourth sub-coil SC2b). With such a configuration, the second camera actuator according to the embodiment is easy to miniaturize, has improved rigidity, and can maintain electromagnetic force at the same time.

[0261] Also, the length L4 of the second coil 1251b in the optical axis direction (Z-axis direction) may be greater than the length L2 of the first coil 1251a in the optical axis direction. That is, the lengths of the first coil 1251a and the second coil 1251b facing each other or opposite to each other may be different. Further, the first coil 1251a and the second coil 1251b may be positioned asymmetrically with respect to the optical axis. That is, corresponding to the difference in the lengths between the first coil 1251a and the second coil 1251b, there may be a difference in the maximum moving distance between the first lens assembly and the second lens assembly. Thereby, it is possible to easily design lens assemblies or moving assemblies having different strokes.

[0262] Also, the first coil 1251a and the second coil 1251b may be offset at least in part in a direction perpendicular to the optical axis (second direction (Y-axis direction)). In other words, the first coil 1251a and the second coil 1251b may not partially overlap in the second direction.

[0263] Also, the length of the coil can correspond to the length of the groove. For example, the length of the first coil 1251a can correspond to the length of the first groove g1. Also, the length of the second coil 1251b can correspond to the length of the second groove g2. Thereby, the length L2 of the first groove g1 may be smaller than the length L4 of the second groove g2.

[0264] Also, the length L1 of the first sub-coil SC1a or the second sub-coil SC2a in the optical axis direction may be smaller than the length L3 of the third sub-coil SC1b or the fourth sub-coil SC2b in the optical axis direction. Alternatively, the length L3 of the third sub-coil SC1b or the fourth sub-coil SC2b in the optical axis direction may be greater than the length L1 of the first sub-coil SC1a or the second sub-coil SC2a in the optical axis direction.

[0265] Correspondingly, the length of the first sub-groove g11 or the second sub-groove g12 in the optical axis direction can correspond to the length L1 of the first sub-coil SC1a or the second sub-coil SC2a in the optical axis direction. Also, the length of the third sub-groove g2a or the fourth sub-groove g22 in the optical axis direction can correspond to the length L3 of the third sub-coil SC1b or the fourth sub-coil SC2b in the optical axis direction.

[0266] Therefore, the length L1 of the first sub-groove g11 or the second sub-groove g12 in the optical axis direction may be smaller than the length L3 of the third sub-groove g2a or the fourth sub-groove g22 in the optical axis direction.

[0267] More precisely, the length L2 of the first coil 1251a in the optical axis direction may be the sum of the total length of the first sub-coil SC1a and the second sub-coil SC2a in the optical axis direction and the length of the first reinforcing member RB1 in the optical axis direction.

[0268] Similarly, the length L4 of the second coil 1251b in the optical axis direction may be the sum of the total length of the third sub-coil SC1b and the fourth sub-coil SC2b in the optical axis direction and the length of the second reinforcing member RB2 in the optical axis direction.

[0269] Correspondingly, the length L1 of the first sub-groove g11 or the second sub-groove g12 in the optical axis direction may be smaller than the length L3 of the third sub-groove g21 or the fourth sub-groove g22 in the optical axis direction. In other words, the length L3 of the third sub-groove g21 or the fourth sub-groove g22 in the optical axis direction may be larger than the length L1 of the first sub-groove g11 or the second sub-groove g12 in the optical axis direction.

[0270] Also, the first sub-groove g11 or the second sub-groove g12 may be asymmetric with respect to the optical axis direction with the third sub-groove g21 or the fourth sub-groove g22. Thereby, the first sub-groove g11 or the second sub-groove g12 may not overlap at least partially with the third sub-groove g21 or the fourth sub-groove g22 in the direction perpendicular to the optical axis (the second direction). In other words, the first sub-groove g11 or the second sub-groove g12 may be shifted at least partially in the second direction with respect to the third sub-groove g21 or the fourth sub-groove g22.

[0271] In addition, the first groove g1 and the second groove g2 may have different areas. For example, the area of the first groove g1 may be smaller than the area of the second groove g2. Further, the areas of the first sub-grooves g11 and g12 may be smaller than the areas of the third sub-grooves g21 and g22.

[0272] Also, the first groove g1 or the second groove g2 can be connected to a hole (or groove, 1231ah) formed in the side portion of the second housing 1232. That is, the first groove g1 can be at least partially connected to the additional hole 1231ah. With such a configuration, the connection between the sub-coil and the groove can be easily managed through the additional hole 1231ah. That is, the first coil or the second coil can be easily seated in the first groove g1 or the second groove g2.

[0273] Furthermore, the side portion of the second housing 1232 may further include an additional protrusion 1232p extending outward. The additional protrusion 1232p may be offset from the first groove g1 and the second groove g2 in the second direction. Further, the additional protrusion 1232p may be disposed at the edge on each side portion of the second housing 1232. Further, the additional protrusion 1232p may at least partially overlap with the substrate portion 1270 in the optical axis direction. The additional protrusion 1232p can be disposed outside the substrate portion 1270 to prevent the substrate 1270 from being detached from the second housing 1232. In other words, the bonding force between the substrate portion 1270 and the second housing 1232 can be improved.

[0274] Furthermore, the side portion or the outer surface of the second housing 1232 may have various fillet or chamfer shapes.

[0275] Further, the first reinforcing member RB1 and the second reinforcing member RB2 may be arranged to be offset in a direction perpendicular to the optical axis direction. The first reinforcing member RB1 and the second reinforcing member RB2 may partially overlap in the second direction (Y-axis direction) depending on the length of the camera actuator. However, the first reinforcing member RB1 and the second reinforcing member RB2 may be offset in the second direction in at least a partial region. In other words, the first reinforcing member RB1 and the second reinforcing member RB2 may not overlap in the second direction in at least a partial region. Thereby, the reinforcing member may be arranged corresponding to the size of the driving unit in the second camera actuator according to the embodiment. Thereby, the reliability of the housing can be improved, and the rigidity can be improved evenly without warping in one region.

[0276] Also, in the usage example, the first reinforcing member RB1 and the second reinforcing member RB2 may not be overlapped in a direction perpendicular to the optical axis direction.

[0277] According to the embodiment, the first reinforcing member RB1 may be located at the center of the first groove g1. For example, the first reinforcing member RB1 may be located so as to correspond to the bisector in the optical axis direction of the first groove g1.

[0278] Also, the second reinforcing member RB2 may be located at the center of the second groove g2. For example, the second reinforcing member RB2 may be located so as to correspond to the bisector in the optical axis direction of the second groove g2.

[0279] Further, the upper surfaces of the first reinforcing member RB1 and the second reinforcing member RB2 can form the same plane as the outer surfaces of the first side portion 1232a and the second side portion 1232b. For example, the upper surface of the first reinforcing member RB1 can form the same plane as the outer surface of the second housing 1232. Also, the upper surface of the first reinforcing member RB1 can correspond to the uppermost surface or the topmost portion of the first groove g1. Also, the upper surface of the second reinforcing member RB2 can form the same plane as the outer surface of the second housing 1232. The upper surface of the second reinforcing member RB2 can correspond to the uppermost surface or the topmost portion of the second groove g2.

[0280] In an embodiment, the maximum length of the reinforcing member can correspond to the maximum depth of the groove. The maximum length of the reinforcing member may be the same as or less than the maximum depth of the groove. For example, the maximum length (length in the second direction) of the first reinforcing member RB1 may be the same as or less than the maximum depth (or length in the second direction) of the first groove g1. Also, the maximum length (length in the second direction) of the second reinforcing member RB2 may be the same as or less than the maximum depth (or length in the second direction) of the second groove g2.

[0281] When the maximum length of the reinforcing member is the same as the maximum depth of the groove, the substrate portion 1270 can be in contact with not only the second housing but also the reinforcing member.

[0282] Furthermore, when the maximum length of the reinforcing member is less than or equal to the maximum depth of the groove, the substrate portion 1270 can be easily seated on the side portion of the second housing.

[0283] With such a configuration, in the embodiment, the substrate portion 1270 disposed on the side portion of the groove and the second housing can have improved reliability.

[0284] Referring further to FIGS. 18 to 21, the housing according to the embodiment may include holes disposed on the side portions for the electromagnetic force generation efficiency between the coil and the magnet.

[0285] In an embodiment, the first side portion 1232a may include a first hole h1. Also, the second side portion 1232b may include a second hole h2.

[0286] The first hole h1 and the second hole h2 may be located inside the first groove g1 and the second groove g2. Also, the first hole h1 and the second hole h2 may partially overlap in the second direction. Also, corresponding to the first groove g1 and the second groove g2, the first hole h1 and the second hole h2 may also be offset in at least a partial region in the second direction. That is, the first hole h1 and the second hole h2 may not overlap at least partially in the second direction.

[0287] In other words, the lengths of the first hole h1 and the second hole h2 in the second direction may also be different. For example, the length of the second hole h2 may be greater than the length of the first hole h1.

[0288] Moreover, the regions of the first hole h1 and the second hole h2 can be partitioned by the first reinforcing member RB1 and the second reinforcing member RB2, respectively.

[0289] In an embodiment, the first hole h1 may include a first sub-hole h11 and a second sub-hole h12. The second hole h2 may include a third sub-hole h21 and a fourth sub-hole h22.

[0290] The first sub-hole h11 may be located inside the first sub-groove g11. The first sub-hole h11 may be smaller in size than the second sub-groove g1.

[0291] Also, the second sub-hole h12 may be located inside the second sub-groove g12. The second sub-hole h12 may be smaller in size than the second sub-groove g12.

[0292] With such a configuration, the first coil 1251a may face each other via the first magnet and the first hole h1. That is, the first magnet and the first coil 1251a can form an electromagnetic force without interference via the first hole h1.

[0293] Also, the second coil 1251b can face each other via the second magnet and the second hole h2. Similarly, the second magnet and the second coil 1251b can form an electromagnetic force without interference via the second hole h2.

[0294] Furthermore, the length of the first sub-hole h11 or the second sub-hole h12 in the optical axis direction may be different from the length of the third sub-hole h21 or the fourth sub-hole h22 in the optical axis direction. For example, the first sub-hole h11 or the second sub-hole h12 may be asymmetric with respect to the third sub-hole h21 or the fourth sub-hole h22 with respect to the optical axis.

[0295] Also, according to an embodiment, the first reinforcing member RB1 may include a first member groove RB1g disposed at an end portion. For example, the first reinforcing member RB1 may include first member grooves RB1g disposed on both sides in the first direction. As a result, the first member groove RB1g may have a length L5 in the second direction at the center along the first direction (X-axis direction) that is greater than a length L6 in the second direction at the end portion. That is, the thickness of the first member groove RB1g may vary along the first direction (X-axis direction). Also, the first member groove RB1g may have the greatest thickness at the center along the first direction (X-axis direction). With such a configuration, the supporting force between the first sub-coil or the second sub-coil is maintained, and it is also possible to easily secure a space for electrical connection between the first sub-coil and the second sub-coil.

[0296] The second reinforcing member RB2 may include a second member groove RB2g disposed at an end portion. For example, the second reinforcing member RB2 may include second member grooves RB2g disposed on both sides in the second direction. As a result, the second member groove RB2g may have a length L7 in the second direction at the center along the second direction (X-axis direction) that is greater than a length L8 in the second direction at the end portion. That is, the thickness of the second member groove RB2g may vary along the second direction (X-axis direction). Also, the second member groove RB2g may have the greatest thickness at the center along the second direction (X-axis direction). With such a configuration, the supporting force between the third sub-coil or the fourth sub-coil is maintained, and it is also possible to easily secure a space for electrical connection between the third sub-coil and the fourth sub-coil.

[0297] Also, in the second camera actuator according to the embodiment, the first-1 stopper ST1a and the second-1 stopper ST2a may be positioned adjacent to the first side portion 1232a. Also, the first-2 stopper ST1b and the second-2 stopper ST2b may be positioned adjacent to the second side portion 1232b.

[0298] FIG. 22 is a drawing with a coil and a stopper added to FIG. 16, FIG. 23 is a drawing with a coil and a stopper added to FIG. 17, and FIG. 24 is a top view of the coil and the stopper of the second camera actuator according to the embodiment.

[0299] Referring to FIGS. 22 to 24, in the second camera actuator according to the embodiment, the first-1 stopper ST1a and the first-2 stopper ST1b may at least partially overlap in the second direction (Y-axis direction).

[0300] However, the second-1 stopper ST2a and the second-2 stopper ST2b may be at least partially displaced in the second direction (Y-axis direction). For example, the second-1 stopper ST2a and the second-2 stopper ST2b may not overlap in the second direction (Y-axis direction). With such a configuration, as described above, the maximum moving distances of the first lens assembly and the second lens assembly may be different.

[0301] Also, the first-1 stopper ST1a and the first-2 stopper ST1b may overlap with the first sub-coil SC1a and the third sub-coil SC1b in the second direction (Y-axis direction). Also, the first-1 stopper ST1a and the first-2 stopper ST1b may at least partially overlap with the holes (coil holes) of the first sub-coil SC1a and the third sub-coil SC1b in the second direction (Y-axis direction). With such a configuration, electromagnetic force can be applied to the first lens assembly and the second lens assembly with maximum efficiency. That is, the efficiency of the driving force can be improved.

[0302] FIG. 25 is a side view of one side of the coil of the second camera actuator according to the embodiment, FIG. 26 is a side view of the other side of the coil of the second camera actuator according to the embodiment, and FIG. 27 is a top view of the coil of the second camera actuator according to the embodiment.

[0303] Referring to FIGS. 25 to 27, the length L9 of the first magnet 1252a in the optical axis direction may be smaller than the length L10 of the second magnet 1252b in the optical axis direction.

[0304] Further, the length L9 of the first magnet 1252a in the optical axis direction may be greater than the length of the first coil 1251a in the optical axis direction. Also, the length L10 of the second magnet 1252a in the optical axis direction may be greater than the length of the second coil 1251a in the optical axis direction.

[0305] In an embodiment, the length L9 of the first magnet 1252a, the length L10 of the second magnet 1252a, the length of the first coil 1251a, and the length of the second coil 1251b may increase in sequence.

[0306] Further, the length L9 of the first magnet 1252a in the optical axis direction may be greater than the length of the first sub-groove or the second sub-groove in the optical axis direction. Similarly, the length L10 of the second magnet 1252b in the optical axis direction may be greater than the length of the third sub-groove or the fourth sub-groove in the optical axis direction. Thereby, the second camera actuator according to the embodiment can suppress the generation of back electromotive force and provide improved driving efficiency.

[0307] Furthermore, the third sub-coil SC1b may overlap with the region between the first sub-coil SC1a and the second sub-coil SC2a in the second direction. That is, the third sub-coil SC1b may overlap with the first reinforcing member in the second direction. Also, the second-2 stopper ST2b may be separated from the second sub-coil SC2a in the optical axis direction or the third direction (Z-axis direction), and may be displaced in the second direction with respect to the second sub-coil SC2a. For example, the second-2 stopper ST2b may be located on the rear end side of the second sub-coil SC2a. Also, the second-2 stopper ST2b may overlap with the fourth sub-coil SC2b in the second direction.

[0308] Furthermore, the second-1 stopper ST2a may overlap with the fourth sub-coil SC2b in the second direction. Also, the second-1 stopper ST2a may overlap with the hole of the fourth sub-coil SC2b in the second direction.

[0309] FIG. 28 is a graph for explaining one effect of the second camera actuator according to the embodiment.

[0310] In FIG. 28, (a) is a graph showing the displacement size (Displacement Mag, WCS, y-axis) with respect to the curve arc length (x-axis) of the second camera actuator according to the embodiment, and (b) shows the displacement size with respect to the curve arc length when the reinforcing member is removed.

[0311] As shown in the figure, in the case of the embodiment, the displacement size can be up to 14 μm (a), and when the reinforcing member is removed, the displacement size can be up to 50 μm (b). Thus, the camera actuator according to the embodiment can improve the straightness of the grooves or holes in the housing and provide improved rigidity.

[0312] Also, in FIG. 28, (c) shows the electromagnetic force (Lorentz force, y-axis) according to the coil interval (x-axis). Referring to FIG. 28(c), when the interval between adjacent sub-coils increases beyond 1.45 mm, the size of the electromagnetic force can be significantly reduced. Accordingly, the ratio of the interval between sub-coils to the length of the sub-coil in the optical axis direction may be from 1:10 to 1:20. Such a ratio can maintain the electromagnetic force, improve the rigidity, and thus improve the reliability of the housing.

[0313] FIG. 29 is a schematic diagram showing a circuit board according to the embodiment.

[0314] Referring to FIG. 29, as described above, the circuit board 1300 according to the embodiment may include a first circuit board portion 1310 and a second circuit board portion 1320. The first circuit board portion 1310 is located at the lower part of the base and can be coupled to the base. Also, an image sensor IS may be disposed on the first circuit board portion 1310. Further, the first circuit board portion 1310 and the image sensor IS can be electrically connected. That is, the base may be located at the rear end of the second camera actuator, and the image sensor and the circuit board (the first circuit board portion) may be located at the rear end of the base. The base may include a filter (e.g., infrared, etc.). The circuit board 1300 may include the above-described image sensor and the sensor base.

[0315] Also, the second circuit board portion 1320 may be located at the side portion of the base. In particular, the second circuit board portion 1320 may be located at the first side portion of the base. Accordingly, the second circuit board portion 1320 is located adjacent to the first coil positioned adjacent to the first side portion, and electrical connection can be easily performed. Also, the second circuit board portion 1320 may be located at the second side portion. Thus, there may be a plurality of second circuit board portions 1320. However, it is not limited thereto, and it may be disposed on only one of the first side portion and the second side portion.

[0316] Furthermore, the circuit board 1300 may further include a fixed board (not shown) located on the side surface. Accordingly, even if the circuit board 1300 is made of a flexible material, it can be coupled to the base while maintaining rigidity by the fixed board.

[0317] The second circuit board portion 1320 of the circuit board 1300 may be located at the side portion of the second driving portion 1250. The circuit board 1300 can be electrically connected to the first driving portion and the driving portion. For example, the electrical connection may be configured by SMT. However, it is not limited to such a method.

[0318] Such a circuit board 1300 may include a circuit board having a wiring pattern that can be electrically connected, such as a Rigid Printed Circuit Board (Rigid PCB), a Flexible Printed Circuit Board (Flexible PCB), or a Rigid Flexible Printed Circuit Board (Rigid Flexible PCB). However, it is not limited to these types.

[0319] In addition, the circuit board 1300 can be electrically connected to other camera modules or the processor of the terminal within the terminal. As a result, the above-described camera actuator and the camera module including the same can transmit and receive various signals within the terminal.

[0320] FIG. 30 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0321] As shown in FIG. 30, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided on the rear surface.

[0322] The camera module 1000 may include an image capturing function and an autofocus function. For example, the camera module 1000 may include an autofocus function using an image.

[0323] The camera module 1000 processes a still image or a video image frame obtained by an image sensor in a shooting mode or a video call mode.

[0324] The processed image frame can be displayed on a predetermined display unit or may be stored in a memory. A camera (not shown) may also be disposed on the front surface of the mobile terminal body.

[0325] For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and OIS can be realized together with an AF or zoom function by the first camera module 1000A.

[0326] The flash module 1530 may include a light-emitting element that emits light internally. The flash module 1530 can be operated by the operation of the camera of the mobile terminal or by the control of the user.

[0327] The autofocus device 1510 may include one of the packages of surface-emitting laser elements as a light-emitting unit.

[0328] The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 can be mainly used under conditions where the autofocus function using the image of the camera module 1000 deteriorates, for example, in a proximity of 10 m or less or in a dark environment.

[0329] The autofocus device 1510 may include a light-emitting unit including a vertical cavity surface emitting laser (VCSEL) semiconductor element, and a light-receiving unit that converts light energy such as a photodiode into electric energy.

[0330] FIG. 31 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0331] For example, FIG. 31 is an external view of a vehicle including a driving assistance device of a vehicle to which the camera module 1000 according to an embodiment is applied.

[0332] Referring to FIG. 31, the vehicle 700 of the embodiment can include wheels 13FL, 13FR that rotate by a power source and a predetermined sensor. The sensor may be, but is not limited to, the camera sensor 2000.

[0333] The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 of the embodiment can acquire video information through the camera sensor 2000 that captures a front view or a surrounding view, determine a lane non-identification situation using the video information, and generate a virtual lane when the lane is not identified.

[0334] For example, the camera sensor 2000 may capture the front of the vehicle 700 to obtain a front view, and a processor (not shown) may analyze the objects included in such a front view to obtain video information.

[0335] For example, when objects such as a lane, an adjacent vehicle, a driving obstacle, and a median strip, a curb, a street tree, etc. corresponding to an indirect road marking are captured in the video captured by the camera sensor 2000, the processor may detect such objects and include them in the video information. At this time, the processor may obtain distance information from the objects detected by the camera sensor 2000 to further supplement the video information.

[0336] The video information may be information about the objects captured in the video. Such a camera sensor 2000 may include an image sensor and a video processing module.

[0337] The camera sensor 2000 can process still images or moving images obtained by an image sensor (for example, CMOS or CCD).

[0338] The video processing module can process the still images or moving images obtained by the image sensor, extract necessary information, and transmit the extracted information to the processor.

[0339] At this time, the camera sensor 2000 may include a stereo camera, but is not limited thereto, so as to improve the measurement accuracy of the object and further ensure information such as the distance between the vehicle 700 and the object.

[0340] Although the above has been described mainly with reference to the embodiments, these are merely examples and do not limit the present invention. Those having ordinary knowledge in the field to which the present invention pertains will understand that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the present embodiment. For example, each component specifically shown in the embodiment can be implemented with modifications. Also, differences regarding such modifications and applications should be construed as being included in the scope of the present invention defined by the appended claims.

Claims

1. A housing including a first side portion, a first lens assembly that moves in the optical axis direction within the housing, and a first driving unit that moves the first lens assembly, and includes the first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet, the first coil is disposed on the first side portion of the housing and includes a first sub-coil and a second sub-coil sequentially disposed in the optical axis direction, and the housing includes a first reinforcing member disposed between the first sub-coil and the second sub-coil, a camera actuator.

2. The camera actuator according to claim 1, wherein the first reinforcing member overlaps at least a part of the first coil in the optical axis direction.

3. The camera actuator according to claim 1, wherein the first reinforcing member includes a first member groove disposed at an end portion.

4. a second lens assembly that moves in the optical axis direction within the housing, and a second driving unit that moves the second lens assembly, and includes the housing includes a second side portion facing the first side portion, the camera actuator according to claim 1, wherein the second driving unit includes a second magnet disposed on the second lens assembly and a second coil facing the second magnet.

5. The camera actuator according to claim 1, wherein a length of the first magnet in the optical axis direction is greater than a length of a hole of the first sub-coil in the optical axis direction.

6. The camera actuator according to claim 5, wherein a length of the first coil in the optical axis direction is a sum of lengths of the first sub-coil, the second sub-coil, and the first reinforcing member in the optical axis direction.

7. The camera actuator according to claim 1, wherein the first groove includes a first sub-groove in which the first sub-coil is disposed and a second sub-groove in which the second sub-coil is disposed.

8. The camera actuator according to claim 7, wherein a length of the first magnet in the optical axis direction is greater than a length of the first sub-groove or the second sub-groove in the optical axis direction.

9. The camera actuator according to claim 4, wherein the second coil is disposed on the second side portion of the housing and includes a third sub-coil and a fourth sub-coil sequentially disposed in the optical axis direction.

10. The camera actuator according to claim 9, wherein a length of the second coil in the optical axis direction is greater than a length of the first coil in the optical axis direction.

11. The camera actuator according to claim 9, wherein the first coil and the second coil are arranged so as to be displaced in a direction perpendicular to the optical axis direction.

12. The camera actuator according to claim 9, wherein a length of the first sub-coil or the second sub-coil in the optical axis direction is smaller than a length of the third sub-coil or the fourth sub-coil in the optical axis direction.

13. The camera actuator according to claim 9, wherein the housing includes a second reinforcing member disposed between a second groove in which the second coil is disposed and the third sub-coil and the fourth sub-coil.

14. The camera actuator according to claim 13, wherein the first reinforcing member and the second reinforcing member are arranged so as to be displaced in a direction perpendicular to the optical axis direction.

15. The camera actuator according to claim 13, wherein a length of the second groove in the optical axis direction is greater than a length of the first groove in the optical axis direction.

16. The camera actuator according to claim 13, wherein the second groove includes a third sub-groove in which the third sub-coil is disposed and a fourth sub-groove in which the fourth sub-coil is disposed.

17. The camera actuator according to claim 16, wherein a length of the third sub-groove or the fourth sub-groove in the optical axis direction is greater than a length of the first sub-groove or the second sub-groove in the optical axis direction.

18. A first-1 stopper and a second-1 stopper that are spaced apart along the optical axis direction and adjacent to the first side portion, and a first-2 stopper and a second-2 stopper that are spaced apart along the optical axis direction and adjacent to the second side portion, and the first-1 stopper and the first-2 stopper overlap in a direction perpendicular to the optical axis direction, The camera actuator according to claim 4, wherein the second-1 stopper and the second-2 stopper are arranged so as to be displaced in a direction perpendicular to the optical axis direction.

19. A housing formed on a first side portion and including a first hole and a second hole that are separated from each other, a first lens assembly that moves in the optical axis direction within the housing, and a first driving unit that moves the first lens assembly, and the first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet. The first coil is disposed on the first side portion of the housing and includes a first sub-coil and a second sub-coil that are sequentially arranged in the optical axis direction. The first sub-coil is disposed in the first hole, and the second sub-coil is disposed in the second hole, which is a camera actuator.

20. A housing including a first side portion and a second side portion facing each other, A first lens assembly and a second lens assembly that move in the optical axis direction within the housing, A first driving unit for moving the first lens assembly, and A second driving unit for moving the second lens assembly, and The first driving unit includes a first magnet disposed on the first lens assembly and a first sub-coil and a second sub-coil disposed on the first side portion facing the first magnet. The second driving unit includes a second magnet disposed on the second lens assembly and a third sub-coil and a fourth sub-coil disposed on the second side portion facing the second magnet. The housing includes a first reinforcing member disposed between the first sub-coil and the second sub-coil and a second reinforcing member disposed between the third sub-coil and the fourth sub-coil, which is a camera actuator.

Images