Camera actuator, and camera module including the same

Abstract

Embodiments of the present invention disclose a camera actuator, which includes a housing, a first lens assembly and a second lens assembly that move in the optical axis direction with reference to the housing, a ball portion located in the first lens assembly and the second lens assembly, and a driving portion that moves the first lens assembly and the second lens assembly. At least one of the first lens assembly and the second lens assembly includes a housing portion that houses a lens, a guide portion in contact with the housing portion where the ball portion is located, and a lens protrusion portion in contact with the housing portion and corresponding to the guide portion.

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 blur due to a user's movement in order to improve the quality of an image, an auto focusing (AF) function that automatically adjusts the distance between an image sensor and a 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, in order to accurately perform an accurate zooming function, auto focus (AF), etc. within a camera module, it is necessary for a moving lens assembly to have a structure with high straightness. Furthermore, a shock absorption structure for protecting the glass of the lens assembly is required to provide improved optical performance, etc.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technical problem to be solved by the present invention is to provide a camera actuator and a camera module including a lens assembly with high straightness.

[0005] In addition, the present invention can provide a camera actuator and a camera module in which reliability is improved by shock absorption of a lens assembly in an AF / ZOOM camera actuator.

[0006] Furthermore, the present invention can provide a camera actuator and a camera module in which glass breakage in the first lens assembly is prevented.

[0007] The technical problem to be solved by the present invention is to provide a camera actuator applicable to ultra-thin, ultra-small, and high-resolution cameras.

[0008] 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

[0009] The camera actuator according to an embodiment of the present invention includes a housing, a first lens assembly and a second lens assembly that move in the optical axis direction with respect to the housing, a ball portion located in the first lens assembly and the second lens assembly, and a drive portion that moves the first lens assembly and the second lens assembly. At least one of the first lens assembly and the second lens assembly includes a housing portion that houses a lens, a guide portion in contact with the housing portion where the ball portion is located, and a lens protrusion portion in contact with the housing portion and corresponding to the guide portion.

[0010] The guide portion may be located on one side surface of the housing portion, and the lens protrusion portion may be located on the other side surface of the housing portion.

[0011] The upper surface of the guide portion may be arranged at the front end of the upper surface of the lens protrusion portion.

[0012] The lower surface of the guide portion may be arranged at the rear end of the lower surface of the lens protrusion portion.

[0013] The length of the lens protrusion portion may be smaller than the length of the guide portion.

[0014] The lens protrusion includes a plate and a support portion connected to the plate, and the support portion may be disposed at the rear end of the plate.

[0015] The height of the plate may be greater than the height of the support portion.

[0016] The length of the plate may be smaller than the length of the support portion.

[0017] The lens protrusion may include a first pin groove disposed on the upper surface of the plate.

[0018] The first pin groove may overlap with the support portion on the optical axis.

[0019] The guide portion may include a second pin groove disposed on the upper surface of the guide portion.

[0020] At least a part of the first pin groove and the second pin groove may overlap.

[0021] The first pin groove may be disposed at the rear end of the second pin groove.

[0022] The guide portion includes a side plate and a wing portion disposed between the side plate and the accommodating portion, and the thickness of the wing portion may vary along the optical axis direction.

[0023] The wing portion may overlap with the second pin groove on the optical axis.

[0024] The side plate includes a first region, a second region, and a third region disposed between the first region and the second region. The first region includes a first recess, the second region includes a second recess, and a drive yoke may be disposed in the third region.

[0025] The drive yoke may be in contact with the drive portion.

[0026] Including a first stopper disposed at one end and a second stopper disposed at the other end in the housing, the first stopper includes a first-1 stopper disposed on one side and a first-2 stopper disposed on the other side, and the second stopper may include a second-1 stopper disposed on one side and a second-2 stopper disposed on the other side.

[0027] The distance between the first-1 stopper and the guide portion of the first lens assembly may be smaller than the distance between the first-2 stopper and the lens protrusion of the first lens assembly.

[0028] The distance between the second-2 stopper and the guide portion of the second lens assembly may be smaller than the distance between the second-1 stopper and the lens protrusion of the second lens assembly.

Advantages of the Invention

[0029] According to an embodiment of the present invention, a camera actuator and a camera module including a lens assembly with high straightness can be realized.

[0030] In addition, the present invention can realize a camera actuator and a camera module with improved reliability by shock absorption of the lens assembly in an AF / ZOOM camera actuator.

[0031] In addition, the present invention can realize a camera actuator and a camera module in which glass breakage in the first lens assembly is prevented.

[0032] The technical problem to be solved by the present invention is to realize a camera actuator applicable to ultra-slim, ultra-small and high-resolution cameras.

[0033] 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 describing specific embodiments of the present invention.

Brief Description of the Drawings

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Mode for Carrying Out the Invention

[0077] 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.

[0078] 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 combinations of a plurality of related description items or any one of a plurality of related description items.

[0079] When a certain component is described as being "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to the other component, but there may also be other components between them. On the other hand, when a certain component is described as being "directly connected" or "directly connected" to another component, it should be understood that there are no other components between them.

[0080] 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.

[0081] 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.

[0082] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. The same or corresponding components will be denoted by the same reference numerals regardless of the reference signs, and redundant descriptions thereof will be omitted.

[0083] 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 taken along AA' of FIG. 1.

[0084] 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.

[0085] The cover CV can cover the first camera actuator 1100 and the second camera actuator 1200. The binding force between the first camera actuator 1100 and the second camera actuator 1200 can be improved by the cover CV.

[0086] 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.

[0087] 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).

[0088] 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".

[0089] 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). 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 in the optical path, and functions such as magnification, autofocusing (AF), zoom, and OIS can be achieved.

[0090] However, it is not limited thereto, and the first camera actuator 1100 can change the optical path vertically or at a predetermined angle multiple times.

[0091] 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.

[0092] 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 from a predetermined control unit to perform an auto-focusing function or a zoom function.

[0093] Also, one or more lenses may move independently or individually along the optical axis direction

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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 may be variously applied, such as an electrostatic method, a thermal method, a bimorph method, an electrostatic force method, etc., and is not limited thereto. Also, in this specification, the camera actuator may 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, hereinafter, 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.

[0098] 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.

[0099] 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 enters the inside of the first camera actuator 1100 along the optical axis direction (for example, the X-axis direction, based on the incident light), and the optical path can be changed in the vertical direction (for example, the Z-axis direction) by an optical member. Also, light can pass through the second camera actuator 1200 and enter an 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.

[0100] 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 1200, the optical axis direction is the third direction (Z-axis direction), and the following description is based on this.

[0101] Also, in this specification, the inside may be the direction from the cover CV toward the first camera actuator, and the outside may be the direction opposite to the inside. 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.

[0102] Also, with such a configuration, the camera module according to the embodiment can improve the spatial limits 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 control the focus and the like with the expanded optical path to provide a high range of magnifications.

[0103] 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.

[0104] 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.

[0105] In addition, the second camera actuator 1200 can be equipped with a coil and a magnet to perform a high magnification zooming function and an autofocus function.

[0106] 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.

[0107] On the one hand, when the OIS actuator and the AF / Zoom actuator are arranged according to the embodiment of the present invention, magnetic field interference with the AF / Zoom magnet can be prevented during the driving of 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.

[0108] FIG. 4 is a perspective view of a first camera actuator according to an embodiment, and FIG. 5 is an exploded perspective view of the first camera actuator according to the embodiment.

[0109] Referring to FIGS. 4 and 5, the first camera actuator 1100 according to the embodiment includes a first housing 1120, a mover 1130, a rotating portion 1140, a first driving portion 1150, a first member 1126, and a second member 1131a.

[0110] The mover 1130 may include a holder 1131 and an optical member 1132 mounted on the holder 1131. Further, the rotating portion 1140 may include a tilt guide portion 1141, a second magnetic body 1142 and a first magnetic body 1143 having the same or different polarities from each other so as to press the tilt guide portion 1141. For example, the first magnetic body 1143 and the second magnetic body 1142 may have the same polarity on the surfaces facing each other. Further, the first driving portion 1150 includes a drive magnet 1151, a drive coil 1152, a hall sensor portion 1153, a first substrate portion 1154, and a yoke portion 1155.

[0111] First, the first camera actuator 1100 may include a shield can (not shown). The shield can (not shown) is located on the outermost side of the first camera actuator 1100 and may be located so as to surround the rotating portion 1140 and the first driving portion 1150 described later.

[0112] Such a shield can (not shown) can block or reduce electromagnetic waves generated externally. That is, the shield can (not shown) can reduce the occurrence of malfunction in the rotating part 1140 or the first drive part 1150.

[0113] The first housing 1120 may be located inside the shield can (not shown). In the case where there is no shield can, the first housing 1120 may be located on the outermost side of the first camera actuator.

[0114] Also, the first housing 1120 may be located inside the first substrate part 1154 described later. The first housing 1120 may be fitted or aligned with the shield can (not shown) and fastened.

[0115] The first housing 1120 may include a first housing side part 1121, a second housing side part 1122, a third housing side part 1123, and a fourth housing side part 1124. A detailed description thereof will be given later.

[0116] The first member 1126 may be arranged on the first housing 1120. A part of the region of the first member 1126 may be penetrated by the second member 1131a. The first member 1126 may be arranged inside the housing. The first member 1126 may have a structure integrated with or separated from the first housing 1120.

[0117] The mover 1130 includes a holder 1131 and an optical member 1132 mounted on the holder 1131.

[0118] The holder 1131 can be fixed to the accommodation part 1125 of the first housing 1120. The holder 1131 may include a first holder outer surface to a fourth holder outer surface corresponding to the first housing side part 1121, the second housing side part 1122, the third housing side part 1123, and the first member 1126, respectively. For example, the first holder outer surface to the fourth holder outer surface may correspond to or face the inner surfaces of the first housing side part 1121, the second housing side part 1122, the third housing side part 1123, and the first member 1126, respectively.

[0119] Further, the holder 1131 may include a second member 1131a disposed in the fourth fixing groove. The second member 1131a can penetrate the first member 1126 and be coupled to the holder 1131. The second member 1131a and the holder 1131 can be coupled to each other by various joining members or coupling members. A detailed description of this will be given later.

[0120] The optical member 1132 can be fixed to the holder 1131. For this purpose, the holder 1131 may have a fixing surface, and the fixing surface may be formed by a receiving groove. In an embodiment, the optical member 1132 may be composed of a mirror or a prism. Although shown based on a prism below, it may be composed of a plurality of lenses as in the above-described embodiment. Alternatively, the optical member 1132 may be composed of a plurality of lenses and a prism or a mirror. Further, the optical member 1132 may include a reflection part disposed inside. However, it is not limited thereto.

[0121] Further, the optical member 1132 can reflect the light reflected from the outside (e.g., an object) inside the camera module. In other words, the optical member 1132 can improve the spatial limits of the first camera actuator and the second camera actuator by changing the path of the reflected light. It should be understood that thereby, the camera module can also provide a high range of magnification while minimizing the thickness and securing the light path.

[0122] Furthermore, the second member 1131a can be coupled to the holder 1131. The second member 1131a may be disposed outside the holder 1131 and inside the housing. Also, the second member 1131a can be seated in an additional groove located in a region other than the fourth seating groove on the outer surface of the fourth holder of the holder 1131. Thereby, the second member 1131a is coupled to the holder 1131, and at least a part of the first member 1126 may be located between the second member 1131a and the holder 1131. For example, at least a part of the first member 1126 may be disposed in a space formed between the second member 1131a and the holder 1131. Also, as described above, the second member 1131a can penetrate through the hole formed in the first member 1126.

[0123] Also, the second member 1131a may have a structure separated from the holder 1131. With such a configuration, as will be described later, the assembly of the first camera actuator can be easily performed. Alternatively, the second member 1131a may be integrally formed with the holder 1131, but will be described as a separated structure hereinafter.

[0124] The rotating part 1140 includes a tilt guide part 1141, a second magnetic body 1142 having the same polarity as each other so as to press the tilt guide part 1141, and a first magnetic body 1143.

[0125] The tilt guide part 1141 can be coupled to the above-described mover 1130 and the first housing 1120. Specifically, the tilt guide part 1141 may be disposed between the holder 1131 and the first member 1126. Therefore, the tilt guide part 1141 can be coupled to the mover 1130 and the first housing 1120 of the holder 1131. However, different from the above-described content, in the present embodiment, the tilt guide part 1141 may be disposed between the first member 1126 and the holder 1131. Specifically, the tilt guide part 1141 may be located between the first member 1126 and the fourth seating groove of the holder 1131. For example, at least a part of the tilt guide part 1141 may be located in the fourth seating groove.

[0126] In the third direction (Z-axis direction), the second member 1131a, the first member 1126, the tilt guide portion 1141, and the holder 1131 may be arranged in this order. Further, the second magnetic body 1142 and the first magnetic body 1143 can be seated in a first groove gr1 formed in the second member 1131a and a second groove gr2 formed in the first member 1126, respectively. In the present embodiment, the positions of the first groove gr1 and the second groove gr2 may be different from those of the first and second grooves described in the other embodiments above. However, the first groove gr1 is located within the second member 1131a and moves integrally with the holder and the second member 1131a, and the second groove gr2 is located on the first member 1126 corresponding to the first groove gr1 and is coupled to the first housing 1120. Therefore, these terms will be described using a mixture. Further, as described above, the first groove and the second groove may be grooves. Alternatively, the first groove and the second groove may be replaced with holes.

[0127] Further, the tilt guide portion 1141 may be arranged adjacent to the optical axis. Thereby, the actuator according to the embodiment can easily change the optical path by the first and second axis tilts described later.

[0128] The tilt guide portion 1141 may include a first protrusion arranged spaced apart in the first direction (X-axis direction) and a second protrusion arranged spaced apart in the second direction (Y-axis direction). Further, the first protrusion and the second protrusion may protrude in opposite directions. A detailed description thereof will be given later.

[0129] Further, as described above, the second magnetic body 1142 may be located within the second member 1131a. Also, the first magnetic body 1143 may be located within the first member 1126.

[0130] The second magnetic body 1142 and the first magnetic body 1143 may have the same polarity as each other. For example, the second magnetic body 1142 may be a magnet having an N pole, and the first magnetic body 1143 may be a magnet having an N pole. Alternatively, conversely, the second magnetic body 1142 may be a magnet having an S pole, and the first magnetic body 1143 may be a magnet having an S pole.

[0131] For example, the first pole face of the first magnetic body 1143 and the second pole face of the second magnetic body 1142 facing the first pole face may have the same polarity as each other.

[0132] The second magnetic body 1142 and the first magnetic body 1143 can generate a repulsive force between each other due to the polarities described above. With such a configuration, the above-described repulsive force can be applied to the second member 1131a or the holder 1131 coupled to the second magnetic body 1142, the first member 1126 coupled to the first magnetic body 1143, or the first housing 1120. At this time, the repulsive force applied to the second member 1131a can be transmitted to the holder 1131 coupled to the second member 1131a. Thereby, the tilt guide portion 1141 disposed between the second member 1131a and the first member 1126 can be pressurized by the repulsive force. That is, the repulsive force can maintain the tilt guide portion 1141 positioned between the holder 1131 and the first housing 1120 (or the first member 1126). With such a configuration, the position between the mover 1130 and the first housing 1120 can be maintained even during X-axis tilt or Y-axis tilt. Further, the tilt guide portion can be in close contact with the first member 1126 and the holder 1131 due to the repulsive force between the first magnetic body 1143 and the second magnetic body 1142. In other words, the repulsive force by the first magnetic body 1143 and the second magnetic body 1142 may be a maintaining force for the position between the holder 1131 and the first housing 1120.

[0133] The first drive unit 1150 includes a drive magnet 1151, a drive coil 1152, a hall sensor unit 1153, a first substrate unit 1154, and a yoke unit 1155. The details thereof will be described later. Also, the yoke unit 1155 may be referred to as the "first yoke unit" in the first camera actuator. Further, the yoke unit in the second camera actuator may be referred to as the "second yoke unit".

[0134] FIG. 6a is a perspective view of a first housing of a first camera actuator according to an embodiment, FIG. 6b is a perspective view in a direction different from that of FIG. 6a, and FIG. 6c is a front view of the first housing of the first camera actuator according to the embodiment.

[0135] Referring to FIGS. 6a to 6c, the first housing 1120 according to the embodiment may include a first housing side portion 1121 to a fourth housing side portion 1124. Also, the first member 1126 may be coupled to the first housing 1120 and integrally formed. Thus, the first member 1126 may be a configuration included in the first housing 1120. That is, the first housing 1120 may be coupled to the first member 1126 and integrally formed. Alternatively, the first housing 1120 may include the first member 1126.

[0136] The first housing side portion 1121 and the second housing side portion 1122 may be arranged to face each other. Also, the third housing side portion 1123 and the fourth housing side portion 1124 may be arranged to face each other.

[0137] Also, the third housing side portion 1123 and the fourth housing side portion 1124 may be arranged between the first housing side portion 1121 and the second housing side portion 1122.

[0138] The third housing side portion 1123 and the fourth housing side portion 1124 may be in contact with the first housing side portion 1121 and the second housing side portion 1122. Also, the third housing side portion 1123 may be the bottom surface of the first housing 1120. Further, the fourth housing side portion 1124 may be the upper surface of the first housing 1120. Also, the description regarding the direction can be similarly applied to the above-described content.

[0139] Also, the first housing side portion 1121 may include a first housing hole 1121a. A third coil, which will be described later, may be located in the first housing hole 1121a.

[0140] Also, the second housing side portion 1122 may include a second housing hole 1122a. Also, a fourth coil 1152b, which will be described later, may be located in the second housing hole 1122a.

[0141] Also, the first housing side portion 1121 and the second housing side portion 1122 may be the side surfaces of the first housing 1120.

[0142] The third coil and the fourth coil may be coupled to the first substrate portion. In an embodiment, the third coil and the fourth coil may be electrically connected to the first substrate portion and current may flow. Such a current is an element of the electromagnetic force by which the second camera actuator can tilt with respect to the X axis.

[0143] Also, the third housing side portion 1123 may include a third housing hole 1123a.

[0144] A fifth coil, which will be described later, may be located in the third housing hole 1123a. Also, the fifth coil 1152c can be electrically connected to and coupled to each other with the first substrate portion in contact with the first housing 1120. Thereby, the fifth coil can be electrically connected to the first substrate portion and receive the supply of current from the first substrate portion. Such a current is an element of the electromagnetic force by which the second camera actuator can tilt with respect to the Y axis.

[0145] Between the first housing side portion 1121 and the fourth housing side portion 1124, the first member 1126 can be seated. As a result, the first member 1126 may be located on the third housing side portion 1123. For example, the first member 1126 may be located on one side. Based on the third direction, the first member 1126 and the holder may be sequentially positioned.

[0146] The fourth housing side portion 1124 is disposed between the first housing side portion 1121 and the second housing side portion 1122 and may be in contact with the first housing side portion 1121, the second housing side portion 1122, and the third housing side portion 1123.

[0147] Also, the fourth housing side portion 1124 may include a fourth housing hole 1124a. The fourth housing hole 1124a may be located above the optical member. As a result, light can pass through the fourth housing hole 1124a and be incident on the optical member.

[0148] Also, the first housing 1120 may include a housing portion 1125 formed by the first housing side portion 1121 to the fourth housing side portion 1124. In the housing portion 1125, the first member 1126, the second member 1131a, and the mover 1130 may be located as components.

[0149] Further, the first housing 1120 may further include a fifth housing side portion facing the first member 1126. The fifth housing side portion is disposed between the first housing side portion 1121 and the second housing side portion 1122, and may be in contact with the first housing side portion 1121, the second housing side portion 1122, and the third housing side portion 1123. The fifth housing side portion may include an opening region to provide a path for the light reflected by the optical member 1132 to move. The fifth housing side portion may include protrusions or grooves, etc., to provide easy coupling with other adjacent camera actuators. With such a configuration, while providing an optical path, the coupling force between the fifth housing side portion having an opening formed therein to provide the optical path and other components is improved, movement of the opening due to separation, etc., is suppressed, and change of the optical path can be minimized.

[0150] Also, as described above, the first member 1126 may be combined with the first housing 1120 and be a configuration included in the first housing 1120. That is, the first housing 1120 may include the first member 1126.

[0151] Also, the first member 1126 may be disposed on the first housing 1120. Alternatively, the first member 1126 may be located within the first housing 1120.

[0152] Also, the first member 1126 can be combined with the first housing 1120. In an embodiment, the first member 1126 may be located between the first housing side portion 1121 and the second housing side portion 1122. Also, the first member 1126 may be located between the third housing side portion 1123 and the fourth housing side portion 1124.

[0153] Also, the first member 1126 may be located on the third housing side portion 1123 and be in contact with the third housing side portion from the first housing side portion.

[0154] Also, a first stop member 1121b may be located on the inner surface of the first housing side portion 1121. Further, a second stop member 1122b may be located on the inner surface of the second housing side portion 1122.

[0155] The first stop member 1121b and the second stop member 1122b may be symmetrically located with respect to the first direction (X-axis direction). The first stop member 1121b and the second stop member 1122b may extend in the first direction (X-axis direction). With such a configuration, even when the first member 1126 moves into the first housing 1120, its position can be maintained by the first stop member 1121b and the second stop member 1122b. In other words, the first stop member 1121b and the second stop member 1122b can maintain the first member 1126 to be located on one side in the first housing 1120.

[0156] Furthermore, the first stop member 1121b and the second stop member 1122b can fix the position of the first member 1126 and fix the position of the tilt guide portion between the first member 1126 and the mover to eliminate factors causing errors such as vibration. Thereby, in the first camera actuator according to the embodiment, the X-axis tilt and the Y-axis tilt can be accurately performed.

[0157] Also, the isolation distance L2 in the second direction (Y-axis direction) between the first stop member 1121b and the second stop member 1122b may be smaller than the maximum length L1 of the first member 1126 in the second direction (Y-axis direction). Thereby, the first member 1126 can be assembled or inserted into the side surface of the first housing 1120 and coupled to the first housing 1120.

[0158] Further, the first member 1126 includes a second protrusion groove where the second protrusion of the tilt guide portion is seated. The second protrusion groove PH2 may be located on the inner surface 1126s1 of the first member 1126. Thereby, the first member 1126 is arranged such that the protrusion of the tilt guide portion (for example, the second protrusion) is adjacent to the prism in the fourth seating groove, and the protrusion serving as the reference axis of tilting is arranged close to the center of gravity of the mover 1130. Thereby, when the holder tilts, the moment for moving the mover 1130 for tilting can be minimized. Thereby, since the current consumption for driving the coil is also minimized, the power consumption of the camera actuator can be reduced.

[0159] Further, the first member 1126 may include through holes 1126a and 1126b. The through holes may be a plurality and may be composed of a first through hole 1126a and a second through hole 1126b.

[0160] The first and second extension portions of the second member described later can penetrate the first through hole 1126a and the second through hole 1126b, respectively. Through this, the second member and the first member can be coupled. In other words, the first housing and the mover can be coupled to each other.

[0161] The second protrusion groove PH2 may be located between the first through hole 1126a and the second through hole 1126b. Through this, a holding force between the second member and the first member can be generated by the repulsive force between the first and second magnetic bodies. In other words, also for the tilting of the mover, the relative positions of the first housing and the mover can be maintained.

[0162] The second protrusion groove PH2 may be located between the first through hole 1126a and the second through hole 1126b. With such a configuration, the coupling force between the tilt guide portion 1141 and the first member 1126 is improved, and a decrease in the accuracy of tilting generated when the tilt guide portion 1141 moves within the first housing can be blocked.

[0163] Further, a second groove gr2 may be located on the outer surface 1126s2 of the first member 1126. The first magnetic body can be seated in the second groove gr2. Also, the outer surface 1126s2 of the first member 1126 may face the inner surface of the second member or the member base portion. Further, the second magnetic body seated on the second member and the first magnetic body of the first member 1126 can face each other to generate the repulsive force described above. As a result, since the first member 1126 tilts the tilt guide portion inward or presses the holder due to the repulsive force, the mover may be separated from the side portion of the third housing in the first housing by a predetermined distance even without current injection into the coil. In other words, the coupling force between the mover, the housing, and the tilt guide portion can be maintained.

[0164] Also, when the first member 1126 is integrated with the first housing 1120, the coupling force between the first member 1126 and the first housing 1120 can be improved, and the reliability of the camera actuator can be improved. Also, when separated, the ease of assembly and manufacture of the first member 1126 and the first housing 1120 can be improved.

[0165] Also, in the embodiment, the first member 1126 may include the first through hole 1126a and the second through hole 1126b as described above. Also, the first through hole 1126a and the second through hole 1126b may be arranged side by side in the second direction (Y-axis direction) and may overlap each other.

[0166] Also, the first member 1126 may include an upper member UA located above the first through hole 1126a and the second through hole 1126b, and a lower member BA located below the first through hole 1126a and the second through hole 1126b. As a result, the first through hole 1126a and the second through hole 1126b may be located in the middle of the first member 1126. That is, the first member 1126 may include a connecting member MA located on the side of the first through hole 1126a and the second through hole 1126b. That is, the upper member UA and the lower member BA can be connected to each other via the connecting member MA. Also, there may be a plurality of lower members BA for forming the first and second through holes, and they may be spaced apart from each other in the second direction (Y-axis direction).

[0167] Thus, the first member 1126 can have improved rigidity by having the upper member UA. For example, the rigidity of the first member 1126 can be increased as compared to the case where there is no upper member UA. For example, in the present embodiment, the rigidity may have a unit of N / μm. Thereby, the reliability of the first camera actuator according to the embodiment can be improved.

[0168] Also, a first coupling groove 1126k may be located on the outer surface 1126s2 of the first member 1126. The first coupling groove 1126k may be located at the edge of the outer surface 1126s2 of the first member 1126. In particular, the first coupling groove 1126k may be located at the end (for example, the left and right sides) on the outer surface 1126s2 of the first member 1126 and may be located adjacent to the first housing side portion 1121.

[0169] The first coupling groove 1126k may be located corresponding to the second coupling grooves 1121m, 1122m of the first housing side portion 1121 and the second housing side portion 1122. In the embodiment, the first coupling groove 1126k may be located facing the second coupling grooves 1121m, 1122m of the first housing side portion 1121 and the second housing side portion 1122. The second coupling grooves 1121m, 1122m may be located on the side surface that is adjacent to the outer surface 1126s2 of the first member 1126 described above and forms the same plane.

[0170] In the embodiment, the first coupling groove 1126k and the second coupling grooves 1121m, 1122m may be plural, and the plural first coupling grooves 1126k and second coupling grooves 1121m, 1122m may be symmetrically located in the first direction or the second direction.

[0171] Further, a coupling member may be applied to the first coupling groove 1126k and the second coupling grooves 1121m and 1122m. That is, the joining member is applied between the first housing side portion (or the second housing side portion) and the first member 1126, and the coupling force between the housing 1120 and the first member 1126 can be improved. Such a joining member may include epoxy or the like, but is not limited to such materials.

[0172] Further, the first member 1126 may further include a first protrusion and a second protrusion. The first protrusion may contact the first housing side portion, and the second protrusion may contact the second housing side portion. The first protrusion may extend in the third direction (Z-axis direction) at one end of the outer surface 1126s2 of the first member. The second protrusion may extend in the third direction (Z-axis direction) at the other end of the outer surface 1126s2 of the first member. That is, the first protrusion and the second protrusion may extend toward the holder.

[0173] The position of the first protrusion can be maintained by the first stop member 1121b, and the position of the second protrusion can be maintained by the second stop member 1122b. Thereby, the reliability of the camera actuator according to the embodiment can be improved.

[0174] FIG. 7 is a perspective view of an optical member of a first camera actuator according to an embodiment.

[0175] The optical member 1132 can be mounted on the holder. Such an optical member 1132 may be a right-angled prism as a reflecting portion, but is not limited thereto.

[0176] In an embodiment, the optical member 1132 may have a protrusion (not shown) on a part of its outer surface. The optical member 1132 can be easily coupled to the holder via the protrusion (not shown). Further, since the holder has a groove or a protrusion, it can also be coupled to the optical member 1132.

[0177] Further, the optical member 1132 can be mounted on the mounting surface of the holder with its bottom surface 1132b. Thereby, the bottom surface 1132b of the optical member 1132 can correspond to the mounting surface of the holder. In the embodiment, the bottom surface 1132b may be configured as an inclined surface identical to the mounting of the holder. Thereby, when the prism moves due to the movement of the holder, it is possible to prevent the optical member 1132 from being separated from the holder due to the movement.

[0178] Further, a groove is formed on the bottom surface 1132b of the optical member 1132 and a joining member is applied, and the optical member 1132 can be coupled to the holder. Alternatively, the joining member can be applied to the groove or protrusion of the holder so that the holder is coupled to the optical member 1132.

[0179] Further, as described above, the optical member 1132 may be configured with a structure capable of reflecting the light reflected from the outside (for example, an object) inside the camera module. As in the embodiment, the optical member 1132 may be configured with a single mirror. Further, the optical member 1132 can change the path of the reflected light to improve the spatial limitations of the first camera actuator and the second camera actuator. It should be understood that thereby, the camera module can also provide a high range of magnifications by expanding the optical path while minimizing the thickness. It should also be understood that the camera module including the camera actuator according to the embodiment can also provide a high range of magnifications by expanding the optical path while minimizing the thickness.

[0180] FIG. 8a is a perspective view of the holder of the first camera actuator according to the embodiment, FIG. 8b is a bottom view of the holder of the first camera actuator according to the embodiment, FIG. 8c is a front view of the holder of the first camera actuator according to the embodiment, FIG. 8d is a rear view of the second member of the first camera actuator according to the embodiment, and FIG. 8e is a bottom view of the second member of the first camera actuator according to the embodiment.

[0181] Referring to FIGS. 8a to 8e, the holder 1131 may include a seating surface 1131k on which the optical member 1132 is seated. The seating surface 1131k may be an inclined surface. Further, the holder 1131 may include a stepped portion above the seating surface 1131k. Also, the stepped portion of the holder 1131 can be coupled to a protruding portion (not shown) of the optical member 1132.

[0182] The holder 1131 may include a plurality of outer surfaces. For example, the holder 1131 may include a first holder outer surface 1131S1, a second holder outer surface 1131S2, a third holder outer surface 1131S3, and a fourth holder outer surface 1131S4.

[0183] The first holder outer surface 1131S1 may be positioned to face the second holder outer surface 1131S2. That is, the first holder outer surface 1131S1 may be symmetrically arranged with respect to the second holder outer surface 1131S2 based on the first direction (X-axis direction).

[0184] The first holder outer surface 1131S1 may be positioned corresponding to the first housing side portion. That is, the first holder outer surface 1131S1 may be positioned to face the first housing side portion. Also, the second holder outer surface 1131S2 may be positioned corresponding to the second housing side portion. That is, the second holder outer surface 1131S2 may be positioned to face the second housing side portion.

[0185] Further, the first holder outer surface 1131S1 may include a first seating groove 1131S1a. Also, the second holder outer surface 1131S2 may include a second seating groove 1131S2a. The first seating groove 1131S1a and the second seating groove 1131S2a may be symmetrically arranged with respect to each other based on the first direction (X-axis direction).

[0186] Further, the first seating groove 1131S1a and the second seating groove 1131S2a may be arranged to overlap in the second direction (Y-axis direction). Also, a third magnet 1151a may be arranged in the first seating groove 1131S1a, and a fourth magnet 1151b may be arranged in the second seating groove 1131S2a. The third magnet 1151a and the fourth magnet 1151b may also be arranged symmetrically with respect to each other with the first direction (X-axis direction) as a reference. It should be understood that in this specification, the third magnet to the fifth magnet can be coupled to the housing via a yoke or a joining member. The polarities of the third magnet and the fourth magnet may be located opposite to each other. For example, in the third magnet, the N pole and the S pole may be sequentially arranged in the third direction, and in the fourth magnet, the S pole and the N pole may be sequentially arranged in the third direction. In a modified example, by adjusting the current injection or the current direction of the third and fourth coils, the polarities of the third magnet and the fourth magnet may be located the same as each other.

[0187] As described above, depending on the positions of the first and second seating grooves and the third and fourth magnets, the electromagnetic forces induced by the respective magnets may be provided coaxially on the outer surface S1131S1 of the first holder and the outer surface 1131S2 of the second holder. For example, the region applied on the outer surface S1131S1 of the first holder (for example, the portion where the electromagnetic force is the strongest) and the region applied on the outer surface S1131S1 of the second holder (for example, the portion where the electromagnetic force is the strongest) may be located on an axis parallel to the second direction (Y-axis direction). Thereby, the X-axis tilt can be accurately performed.

[0188] A third magnet 1151a may be arranged in the first seating groove 1131S1a, and a fourth magnet 1151b may be arranged in the second seating groove 1131S2a.

[0189] The outer surface 1131S3 of the third holder is in contact with the outer surface 1131S1 of the first holder and the outer surface 1131S2 of the second holder, and may be an outer surface extending in the second direction (Y-axis direction) on one side of the outer surface 1131S1 of the first holder and the outer surface 1131S2 of the second holder. Further, the outer surface 1131S3 of the third holder may be located between the outer surface 1131S1 of the first holder and the outer surface 1131S2 of the second holder. The outer surface 1131S3 of the third holder may be the bottom surface of the holder 1131. That is, the outer surface 1131S3 of the third holder may be located to face the third housing side portion.

[0190] Further, the outer surface 1131S3 of the third holder may include a third seating groove 1131S3a. A fifth magnet 1151c may be disposed in the third seating groove 1131S3a. The outer surface 1131S3 of the third holder may be located to face the third housing side portion 1123.

[0191] Further, the third housing hole 1123a may at least partially overlap with the third seating groove 1131S3a in the first direction (X-axis direction). Thereby, the fifth magnet 1151c in the third seating groove 1131S3a and the fifth coil 1152c in the third housing hole 1123a may be located to face each other. Also, the fifth magnet 1151c and the fifth coil 1152c can cause the second camera actuator to tilt in the Y-axis by generating electromagnetic force.

[0192] Also, while the X-axis tilt is performed by a plurality of magnets (the third and fourth magnets 1151a, 1151b), the Y-axis tilt can be performed only by the fifth magnet 1151c.

[0193] In an embodiment, the third seating groove 1131S3a may be wider than the first seating groove 1131S1a or the second seating groove 1131S2a. With such a configuration, the Y-axis tilt can be performed by current control similar to the X-axis tilt.

[0194] The outer surface 1131S4 of the fourth holder contacts the outer surface 1131S1 of the first holder and the outer surface 1131S2 of the second holder, and may be an outer surface extending in the first direction (X-axis direction) with the outer surface 1131S1 of the first holder and the outer surface 1131S2 of the second holder. Further, the outer surface 1131S4 of the fourth holder may be located between the outer surface 1131S1 of the first holder and the outer surface 1131S2 of the second holder. That is, the outer surface 1131S4 of the fourth holder may be located so as to face the first member.

[0195] The outer surface 1131S4 of the fourth holder may include a fourth seating groove 1131S4a. The tilt guide portion 1141 may be located in the fourth seating groove 1131S4a. Further, the second member 1131a and the first member 1126 may be located in the fourth seating groove 1131S4a. Also, the fourth seating groove 1131S4a may include a plurality of regions. It may include a first region AR1, a second region AR2, and a third region AR3.

[0196] The second member 1131a may be located in the first region AR1. That is, the first region AR1 may overlap with the second member 1131a in the first direction (X-axis direction). In particular, the first region AR1 may be a region where the member base portion of the second member 1131a is located. At this time, the first region AR1 may be located on the outer surface 1131S4 of the fourth holder. That is, the first region AR1 can correspond to a region located above the fourth seating groove 1131S4a. In this case, the first region AR1 may not be a region within the fourth seating groove 1131S4a.

[0197] The first member 1126 may be located in the second region AR2. That is, the second region AR2 may overlap with the first member 1126 in the first direction (X-axis direction).

[0198] Also, the second region AR2 may be located on the outer surface 1131S4 of the fourth holder like the first region. That is, the second region AR2 can correspond to a region located above the fourth seating groove 1131S4a.

[0199] The tilt guide portion may be located in the third region AR3. In particular, the base of the tilt guide portion may be located in the third region AR3. That is, the third region AR3 may overlap with the tilt guide portion (for example, the base) in the first direction (X-axis direction).

[0200] Also, the second region AR2 may be located between the first region AR1 and the third region AR3.

[0201] Also, a second member is disposed in the first region AR1, and the second member 1131a may include the first groove gr1. In an embodiment, the second member 1131a may include the first groove gr1 formed on the inner surface 1131aas. Also, as described above, the second magnetic body may be disposed in the first groove gr1.

[0202] Also, as described above, a first member may be disposed in the second region AR2. The first groove gr1 may be positioned to face the second groove gr2. For example, the first groove gr1 may at least partially overlap with the second groove gr2 in the third direction (Z-axis direction).

[0203] Also, the repulsive force generated by the second magnetic body can be transmitted to the fourth seating groove 1131S4a of the holder 1131 via the second member. As a result, the holder can apply a force to the tilt guide portion in the same direction as the repulsive force generated by the second magnetic body.

[0204] The first member may include a second groove gr2 facing the first groove gr1 formed on the outer surface. Also, as described above, the first member may include the second protrusion groove formed on the inner surface. Also, the second protrusion can be seated in the second protrusion groove.

[0205] Also, similar to the second magnetic body, the repulsive force generated by the first magnetic body and the second magnetic body can be applied to the first member. As a result, the first member and the second member can press the tilt guide portion disposed between the first member and the holder 1131 by the repulsive force.

[0206] The tilt guide portion 1141 may be disposed in the third region AR3.

[0207] Further, the first protrusion groove PH1 may be located in the fourth seating groove 1131S4a. Further, the first protrusion groove PH1 may accommodate the first protruding portion of the tilt guide portion 1141. Thereby, the first protruding portion PR1 can be in contact with the first protrusion groove. The maximum diameter of the first protrusion groove PH1 can correspond to the maximum diameter of the first protruding portion PR1. This can be similarly applied to the second protrusion groove and the second protruding portion PR2. That is, the maximum diameter of the second protrusion groove can correspond to the maximum diameter of the second protruding portion PR2. Thereby, the second protruding portion can be in contact with the second protrusion groove. With such a configuration, the first axis tilt with respect to the first protruding portion and the second axis tilt with respect to the second protruding portion can be easily performed, and the tilt radius can be improved.

[0208] Further, in the embodiment, there may be a plurality of first protrusion grooves PH1. For example, any one of the first protrusion groove PH1 and the second protrusion groove PH2 may include a first-1 protrusion groove PH1a and a first-2 protrusion groove PH1b. Hereinafter, the case where the first protrusion groove PH1 includes the first-1 protrusion groove PH1a and the first-2 protrusion groove PH1b will be described. Further, the following description can be similarly applied to the second protrusion groove PH2. For example, the second protrusion groove PH2 includes a second-1 protrusion groove and a second-2 protrusion groove, and the description of the first-1 protrusion groove can be applied to the second-1 protrusion groove, and the description of the first-2 protrusion groove can be applied to the second-2 protrusion groove.

[0209] The first-1 protrusion groove PH1a and the first-2 protrusion groove PH1b may be arranged side by side in the first direction (x-axis direction). The maximum widths of the first-1 protrusion groove PH1a and the first-2 protrusion groove PH1b may be the same as each other.

[0210] The plurality of first protrusion grooves PH1 may have different numbers of inclined surfaces. For example, the first protrusion groove PH1 may include a groove bottom surface and an inclined surface. At this time, the plurality of protrusion grooves may have different numbers of inclined surfaces. Also, the widths of the bottom surfaces of the protrusion grooves may be different.

[0211] For example, the first first protrusion groove PH1a may include a first groove bottom surface LS1 and a first inclined surface CS1. The first second protrusion groove PH1b may include a second groove bottom surface LS2 and a second inclined surface CS2.

[0212] At this time, the first groove bottom surface LS1 and the second groove bottom surface LS2 may have different widths from each other. The width of the first groove bottom surface LS1 may be smaller than the width of the second groove bottom surface LS2.

[0213] Also, the number of the first inclined surfaces CS1 in contact with the first groove bottom surface LS1 may be different from the number of the second inclined surfaces CS2. For example, the number of the first inclined surfaces CS1 may be larger than the number of the second inclined surfaces CS2.

[0214] With such a configuration, the assembly tolerance of the first protrusion that adheres to the first protrusion groove PH1 can be easily compensated. For example, since the number of the first inclined surfaces CS1 is larger than the number of the second inclined surfaces CS2, the first protrusion contacts more inclined surfaces, and the position of the first protrusion can be maintained more accurately by the first first protrusion groove PH1a.

[0215] In contrast, in the first second protrusion groove PH1b, the position adjustment of the first protrusion can be easily performed where the number of the inclined surfaces in contact with the first protrusion is smaller than that in the first first protrusion groove PH1a.

[0216] In the embodiment, the second inclined surfaces CS2 may be arranged at intervals from each other in the second direction (Y-axis direction). Also, the second groove bottom surface LS2 extends in the first direction (X-axis direction), and the first protrusion can easily move in the first direction (X-axis direction) in a state where the first protrusion is in contact with the second inclined surface CS2. That is, in the first second protrusion groove PH1b, the position of the first protrusion can be easily adjusted.

[0217] It should be noted that there may be some inaccuracies in the translation due to the complexity of the patent text and the need to maintain the specific tags. It is recommended to double-check with the original text for a more accurate understanding.In addition, in the present embodiment, the first region AR1, the second region AR2, and the third region AR3 may have different heights in the first direction (X-axis direction). In the embodiment, the first region AR1 may have a greater height in the first direction (X-axis direction) than the second region AR2 and the third region AR3. As a result, a step can be located between the first region AR1 and the second region AR2.

[0218] Further, the second member 1131a may include the first groove gr1. In other words, the first groove gr1 may be located on the inner surface of the member base portion 1131aa. Further, the above-described second magnetic body can be seated in the first groove gr1. Also, there may be a plurality of first grooves gr1 depending on the number of the second magnetic bodies. That is, the first groove gr1 may be configured with a number corresponding to the number of the second magnetic bodies.

[0219] Further, the second member 1131a may include a member base portion 1131aa, a first extension portion 1131ab, and a second extension portion 1131ac.

[0220] The member base portion 1131aa may be located on the outermost side of the first camera actuator. The member base portion 1131aa may be located outside the first member. That is, the first member may be located between the member base portion 1131aa and the tilt guide portion.

[0221] The first extension portion 1131ab may extend in the third direction (Z-axis direction) at the edge of the member base portion 1131aa. That is, the first extension portion 1131ab may extend from the member base portion 1131aa toward the holder 1131. The same applies to the second extension portion 1131ac. Also, the second extension portion 1131ac may extend in the third direction (Z-axis direction) at the edge of the member base portion 1131aa. In the embodiment, the first extension portion 1131ab and the second extension portion 1131ac may be located at the edge in the second direction (Y-axis direction) of the member base portion 1131aa. Also, the first extension portion 1131ab and the second extension portion 1131ac may be disposed between the upper member and the lower member.

[0222] As a result, the second member 1131a can have a groove formed by the first extension portion 1131ab and the second extension portion 1131ac. That is, the groove may be located between the first extension portion 1131ab and the second extension portion 1131ac. As a result, the first extension portion 1131ab and the second extension portion 1131ac can be connected to each other only by the member base portion 1131aa. With such a configuration, the second member 1131a can continuously receive the repulsive force from the second magnetic body seated in the center of the member base portion 1131aa, particularly in the first groove gr1.

[0223] Further, when the second member 1131a is coupled to the holder and moves during X-axis tilting and Y-axis tilting, the rigidity of the second member 1131a may be even greater than the rigidity of the first member.

[0224] Furthermore, as described above, the first member according to the embodiment can increase its rigidity by having an upper member and a lower member. With such a configuration, the rigidity difference between the second member and the first member can be reduced. As a result, when the second member 1131a and the holder 1131 coupled to the second member 1131a are tilted together in the X-axis or Y-axis direction, the second member 1131a can have a smaller adjacent distance from the first member and can contact the first member. As a result, since the first member has the improved rigidity as described above, it can easily operate as a stopper. That is, the reliability of the camera actuator can be improved.

[0225] Furthermore, the rigidity difference between the first member and the second member can be reduced, minimizing damage due to contact during tilting. That is, the reliability of the camera actuator can be improved.

[0226] In addition, the first extension portion 1131ab can be separated from the second extension portion 1131ac in the second direction (Y-axis direction) to form a separation space. The first member and the tilt guide portion can be seated in such a separation space. Also, the second magnetic body and the first magnetic body may be located in the separation space.

[0227] Also, the first extension part 1131ab and the second extension part 1131ac may have the same length in the third direction (Z-axis direction). Thereby, the bonding force, weight, etc. are formed in a well-balanced manner, and the tilt of the holder can be accurately made without tilting to one side.

[0228] Also, the first extension part 1131ab and the second extension part 1131ac can be coupled to the holder. In this specification, it should be understood that the coupling can be performed by means of a joining member in addition to the above-described protrusion and groove structures. In an embodiment, the first extension part 1131ab and the second extension part 1131ac may include a third coupling groove 1131k formed in the third direction (Z-axis direction). Further, a coupling protrusion 1131m may be located in a region where the first extension part 1131ab, the second extension part 1131ac, and the third direction (Z-axis direction) overlap in the fourth seating groove 1131S4a. The coupling protrusion 1131m may be located corresponding to the third coupling groove 1131k.

[0229] For example, a joining member such as epoxy may be applied to the third coupling groove 1131k. Further, the coupling protrusion 1131m may be inserted into the third coupling groove 1131k of the first extension part 1131ab and the second extension part 1131ac. With such a configuration, the second member 1131a and the holder 1131 can be coupled to each other. Also, the repulsive force applied to the second member 1131a by such a coupling can be transmitted to the holder 1131.

[0230] However, as described above, it should be understood that the positions of the protrusion and the groove structure may change relative to each other.

[0231] FIG. 9a is a perspective view of a tilt guide part of a first camera actuator according to an embodiment, FIG. 9b is a perspective view in a direction different from that of FIG. 9a, and FIG. 9c is a view seen along FF' of FIG. 9a.

[0232] The tilt guide part 1141 according to the embodiment may include a base BS, a first protruding part PR1 protruding from the first surface 1141a of the base BS, and a second protruding part PR2 protruding from the second surface 1141b of the base BS. Also, depending on the structure, the first protruding part and the second protruding part may have opposite formed surfaces, but this will be described below with reference to the drawings. Further, it should be understood that the first protruding part PR1 and the second protruding part PR2 may be integrally formed with the base BS, and as shown in the drawings, the first protruding part PR1 and the second protruding part PR2 may have a spherical shape like a ball. Also, the first protruding part PR1 and the second protruding part PR2 may be balls instead of protrusions or protruding shapes.

[0233] First, the base BS may include a first surface 1141a and a second surface 1141b facing the first surface 1141a. That is, the first surface 1141a may be separated from the second surface 1141b in the third direction (Z-axis direction), and may be an outer surface facing each other or facing each other within the tilt guide part 1141.

[0234] The tilt guide part 1141 may include a first protruding part PR1 extending to one side on the first surface 1141a. According to the embodiment, the first protruding part PR1 may protrude toward the holder on the first surface 1141a. There may be a plurality of first protruding parts PR1, and they may include a first - 1 protruding part PR1a and a first - 2 protruding part PR1b.

[0235] The first - 1 protruding part PR1a and the first - 2 protruding part PR1b may be arranged side by side in the first direction (X-axis direction). In other words, the first - 1 protruding part PR1a and the first - 2 protruding part PR1b may overlap in the first direction (X-axis direction). Also, in the embodiment, the first - 1 protruding part PR1a and the first - 2 protruding part PR1b may be bisected by an imaginary line extending in the first direction (X-axis direction).

[0236] In addition, the first first protrusion PR1a and the first second protrusion PR1b have a curvature and may be, for example, hemispherical. Also, the first first protrusion PR1a and the first second protrusion PR1b can contact the first groove of the housing at a point most distant from the first surface 1141a of the base BS.

[0237] Also, an alignment groove 1141aa may be located on the first surface 1141a. The alignment groove 1141aa is arranged on one side of the first surface 1141a and can provide the assembly position or assembly direction of the tilt guide portion 1141 during the assembly process.

[0238] Also, the tilt guide portion 1141 may include a second protrusion PR2 extending on one side on the second surface 1141b. According to an embodiment, the second protrusion PR2 may protrude from the second surface 1141b toward the housing. Also, there may be a plurality of second protrusions PR2, and in an embodiment, it may include a second first protrusion PR2a and a second second protrusion PR2b.

[0239] The second first protrusion PR2a and the second second protrusion PR2b may be arranged side by side in the second direction (Y-axis direction). That is, the second first protrusion PR2a and the second second protrusion PR2b may overlap in the second direction (Y-axis direction). Also, in an embodiment, the second first protrusion PR2a and the second second protrusion PR2b may be bisected by an imaginary line extending in the second direction (Y-axis direction).

[0240] The second first protrusion PR2a and the second second protrusion PR2b may have a curvature and may be, for example, hemispherical. Also, the second first protrusion PR2a and the second second protrusion PR2b can contact the second member 1131a at a point separated from the second surface 1141b of the base BS.

[0241] The first protrusions PR1a and PR1b may be located in the region between the second protrusions PR2a and PR2b in the second direction. According to an embodiment, the first protrusions PR1a and PR1b may be located at the center of the spaced-apart space between the second protrusions PR2a and PR2b in the second direction. With such a configuration, the actuator according to the embodiment can have the same range of X-axis tilt angles with respect to the X-axis. In other words, the tilt guide portion 1141 can provide the same range (for example, positive / negative range) in which the holder can tilt about the X-axis with respect to the first protrusions PR1a and PR1b as a reference.

[0242] Further, the second protrusions PR2a and PR2b may be located in the region between the first protrusions PR1a and PR1b in the first direction. According to an embodiment, the second protrusions PR2a and PR2b may be located at the center of the spaced-apart space between the first protrusions PR1a and PR1b in the first direction. With such a configuration, the actuator according to the embodiment can have the same range of Y-axis tilt angles with respect to the Y-axis. In other words, the tilt guide portion 1141 and the holder can provide the same range (for example, positive / negative range) in which the Y-axis tilt is possible with respect to the second protrusions PR2a and PR2b as a reference.

[0243] Specifically, the first surface 1141a may include a first outer line M1, a second outer line M2, a third outer line M3, and a fourth outer line M4. The first outer line M1 and the second outer line M2 may face each other, and the third outer line M3 and the fourth outer line M4 may face each other. Also, the third outer line M3 and the fourth outer line M4 may be located between the first outer line M1 and the second outer line M2. Further, the first outer line M1 and the second outer line M2 may be perpendicular to the first direction (X-axis direction), but the third outer line M3 and the fourth outer line M4 may be parallel to the first direction (X-axis direction).

[0244] At this time, the first protruding portion PR1 may be located on the first virtual line VL1. Here, the first virtual line VL1 is a line that bisects the first outer line M1 and the second outer line M2. Alternatively, the first and third virtual lines VL1, VL1' are lines that bisect the base BS in the second direction (Y-axis direction). Thereby, the tilt guide portion 1141 can easily perform X-axis tilting via the first protruding portion PR1. Furthermore, since the tilt guide portion 1141 performs X-axis tilting with reference to the first virtual line VL1, the rotational force can be uniformly applied to the tilt guide portion 1141. Thereby, X-axis tilting can be performed precisely, and the reliability of the element can be improved.

[0245] Also, the first-1 protruding portion PR1a and the first-2 protruding portion PR1b may be symmetrically arranged with reference to the first virtual line VL1 and the second virtual line VL2. Alternatively, the first-1 protruding portion PR1a and the first-2 protruding portion PR1b may be symmetrically located with reference to the first center point C1. With such a configuration, the support force supported by the first protruding portion PR1 during X-axis tilting can be uniformly applied to the upper side and the lower side with reference to the second virtual line VL2. Thereby, the reliability of the tilt guide portion can be improved. Here, the second virtual line VL2 is a line that bisects the third outer line M3 and the fourth outer line M4. Alternatively, the second and fourth virtual lines VL2, VL2' are lines that bisect the base BS in the first direction (X-axis direction).

[0246] Also, the first center point C1 may be the intersection of the first virtual line VL1 and the second virtual line VL2. Alternatively, it may be a point corresponding to the center of gravity depending on the shape of the tilt guide portion 1141.

[0247] Further, the second surface 1141b may include a fifth outer line M1', a sixth outer line M2', a seventh outer line M3', and an eighth outer line M4'. The fifth outer line M1' and the sixth outer line M2' may face each other, and the seventh outer line M3' and the eighth outer line M4' may face each other. Also, the seventh outer line M3' and the eighth outer line M4' may be positioned between the fifth outer line M1' and the sixth outer line M2'. Further, the fifth outer line M1' and the sixth outer line M2' are perpendicular to the first direction (X-axis direction), but the seventh outer line M3' and the eighth outer line M4' may be parallel to the first direction (X-axis direction).

[0248] Furthermore, since the tilt guide portion 1141 performs the Y-axis tilt with reference to the fourth virtual line VL2', the rotational force can be uniformly applied to the tilt guide portion 1141. As a result, the Y-axis tilt can be performed precisely, and the reliability of the element can be improved.

[0249] Also, the second-1 protruding portion PR2a and the second-2 protruding portion PR2b may be symmetrically arranged with respect to the third virtual line VL1' on the fourth virtual line VL2'. Alternatively, the second-1 protruding portion PR2a and the second-2 protruding portion PR2b may be symmetrically positioned with reference to the second center point C1'. With such a configuration, the supporting force supported by the second protruding portion PR2 during Y-axis tilt can be equally applied to the upper and lower sides of the tilt guide portion with reference to the fourth virtual line VL2'. As a result, the reliability of the tilt guide portion can be improved. Here, the third virtual line VL1' is a line that bisects the fifth outer line M1' and the sixth outer line M2'. Also, the second center point C1' may be the intersection of the third virtual line VL1' and the fourth virtual line VL2'. Alternatively, it may be a point corresponding to the center of gravity depending on the shape of the tilt guide portion 1141.

[0250] Also, the interval (DR2) in the first direction (X-axis direction) between the first-1 protruding portion PR1a and the first-2 protruding portion PR1b may be larger than the length in the first direction (X-axis direction) of the second protruding portion PR2. As a result, when performing the X-axis tilt with reference to the first-1 protruding portion PR1a and the first-2 protruding portion PR1b, the resistance by the second protruding portion PR2 can be minimized.

[0251] Correspondingly, the interval (ML2) in the second direction (Y-axis direction) between the second-1 protruding portion PR2a and the second-2 protruding portion PR2b may be larger than the length in the second direction (Y-axis direction) of the first protruding portion PR1. Thereby, when performing Y-axis tilting with reference to the second-1 protruding portion PR2a and the second-2 protruding portion PR2b, the resistance by the first protruding portion PR1 can be minimized.

[0252] FIG. 10 is a diagram showing a first driving unit of the first camera actuator according to the embodiment.

[0253] Referring to FIG. 10, the first driving unit 1150 includes a driving magnet 1151, a driving coil 1152, a hall sensor unit 1153, a first substrate unit 1154, and a yoke unit 1155.

[0254] Also, as described above, the driving magnet 1151 may include a third magnet 1151a, a fourth magnet 1151b, and a fifth magnet 1151c that provide a driving force by electromagnetic force. The third magnet 1151a, the fourth magnet 1151b, and the fifth magnet 1151c may be located on the outer surface of the holder 1131, respectively.

[0255] Also, the driving coil 1152 may include a plurality of coils. In the embodiment, the driving coil 1152 may include a third coil 1152a, a fourth coil 1152b, and a fifth coil 1152c.

[0256] The third coil 1152a may be located to face the third magnet 1151a. Thereby, the third coil 1152a may be located in the first housing hole 1121a of the first housing side portion 1121 as described above. Also, the fourth coil 1152b may be located to face the fourth magnet 1151b. Thereby, the fourth coil 1152b may be located in the second housing hole 1122a of the second housing side portion 1122 as described above.

[0257] The second camera actuator according to the embodiment can minimize the occurrence of decent and tilt phenomena during OIS realization by rotationally controlling the mover 1130 in the first axis (X-axis direction) or the second axis (Y-axis direction) by the electromagnetic force between the drive magnet 1151 and the drive coil 1152, and can provide the best optical characteristics.

[0258] Also, according to the embodiment, by realizing OIS through the tilt guide portion 1141 of the rotating portion 1140 disposed between the first housing 1120 and the mover 1130, the size limitation of the actuator can be eliminated, and an ultra-slim and ultra-compact camera actuator and a camera module including the same can be provided.

[0259] The first substrate portion 1154 may include a first substrate side portion 1154a, a second substrate side portion 1154b, and a third substrate side portion 1154c.

[0260] The first substrate side portion 1154a and the second substrate side portion 1154b may be disposed opposite to each other. Also, the third substrate side portion 1154c may be located between the first substrate side portion 1154a and the second substrate side portion 1154b.

[0261] Also, the first substrate side portion 1154a may be located between the first housing side portion and the shield can, and the second substrate side portion 1154b may be located between the second housing side portion and the shield can. Also, the third substrate side portion 1154c may be located between the third housing side portion and the shield can, or may be the bottom surface of the first substrate portion 1154.

[0262] The first substrate side portion 1154a can be coupled to the third coil 1152a and electrically connected. Also, the first substrate side portion 1154a can be coupled to the first hall sensor 1153a and electrically connected.

[0263] The second substrate side portion 1154b can be coupled to the fourth coil 1152b and electrically connected. It should also be understood that the second substrate side portion 1154b can be coupled to the first hall sensor and electrically connected.

[0264] The third substrate side portion 1154c can be coupled to the fifth coil 1152c and electrically connected. Also, the third substrate side portion 1154c can be coupled to the second hall sensor 1153b and electrically connected.

[0265] The yoke portion 1155 may include a third yoke 1155a, a fourth yoke 1155b, and a fifth yoke 1155c. The third yoke 1155a is located in the first seating groove and can be coupled to the third magnet 1151a. Also, the fourth yoke 1155b is located in the second seating groove and can be coupled to the fourth magnet 1151b. Also, the fifth yoke 1155c is located in the third seating groove and can be coupled to the fifth magnet 1151c. Such third to fifth yokes 1155a to 1155c from the third yoke allow the third to fifth magnets 1151a to 1151c to be easily seated in the first to third seating grooves and coupled to the housing.

[0266] FIG. 11a is a perspective view of a first camera actuator according to an embodiment, FIG. 11b is a view taken along line PP' of FIG. 11a, and FIG. 11c is a view taken along line QQ' of FIG. 11a.

[0267] Referring to FIGS. 11a to 11c, the third coil 1152a may be located on the first housing side portion 1121, and the third magnet 1151a may be located on the first outer surface 1131S1 of the holder 1131 of the holder 1131. Accordingly, the third coil 1152a and the third magnet 1151a may be positioned to face each other. The third magnet 1151a may at least partially overlap the third coil 1152a in the second direction (Y-axis direction).

[0268] Further, the fourth coil 1152b may be located on the second housing side portion 1122, and the fourth magnet 1151b may be located on the second holder outer surface 1131S2 of the holder 1131. Thus, the fourth coil 1152b and the fourth magnet 1151b may be positioned to face each other. The fourth magnet 1151b may at least partially overlap with the fourth coil 1152b in the second direction (Y-axis direction).

[0269] Also, the third coil 1152a and the fourth coil 1152b may overlap in the second direction (Y-axis direction), and the third magnet 1151a and the fourth magnet 1151b may overlap in the second direction (Y-axis direction).

[0270] With such a configuration, the electromagnetic force applied to the outer surfaces of the holder (the first holder outer surface and the second holder outer surface) is located on the parallel axis in the second direction (Y-axis direction), and the X-axis tilt can be performed accurately and precisely.

[0271] Further, the second protrusions PR2a, PR2b of the tilt guide portion 1141 may contact the first member 1126 of the first housing 1120. The second protrusion PR2 can be seated in the second protrusion groove PH2 formed on one side surface of the first member 1126. Also, when performing the X-axis tilt, the second protrusions PR2a, PR2b may be the tilt reference axis (or rotation axis). Thus, the tilt guide portion 1141 and the mover 1130 can move along the second direction.

[0272] Also, as described above, the first hall sensor 1153a may be located outside for electrical connection and coupling with the first substrate portion 1154. However, it is not limited to such a position.

[0273] Further, the fifth coil 1152c may be located on the third housing side portion 1123, and the fifth magnet 1151c may be located on the third outer surface 1131S3 of the holder 1131. The fifth coil 1152c and the fifth magnet 1151c may at least partially overlap in the first direction (X-axis direction). Thereby, the intensity of the electromagnetic force between the fifth coil 1152c and the fifth magnet 1151c can be easily controlled.

[0274] As described above, the tilt guide portion 1141 may be located on the fourth outer surface 1131S4 of the holder 1131. Further, the tilt guide portion 1141 can be seated in the fourth seating groove 1131S4a on the fourth outer surface. As described above, the fourth seating groove 1131S4a may include the first region AR1, the second region AR2, and the third region AR3 described above.

[0275] In the first region AR1, the second member 1131a is disposed, and the second member 1131a may include the first groove gr1 formed on the inner surface. Further, as described above, the second magnetic body 1142 is disposed in the first groove gr1, and the repulsive force RF2 generated by the second magnetic body 1142 can be transmitted to the fourth seating groove 1131S4a of the holder 1131 via the second member 1131a (RF2'). Therefore, the holder 1131 can apply a force to the tilt guide portion 1141 in the same direction as the repulsive force RF2 generated by the second magnetic body 1142.

[0276] In the second region AR2, the first member 1126 may be disposed. The first member 1126 may include a second groove gr2 facing the first groove gr1. Further, the first member 1126 may include a second protrusion groove PH2 disposed on a surface corresponding to the second groove gr2. Further, the repulsive force RF1 generated by the first magnetic body 1143 can be applied to the first member 1126. Thereby, the first member 1126 and the second member 1131a can press the tilt guide portion 1141 disposed between the first member 1126 and the holder 1131 through the generated repulsive forces RF1 and RF2'. Therefore, even after the holder is tilted about the X-axis or the Y-axis by the current applied to the third or fourth coil, or the fifth coil 1152c, the connection between the holder 1131, the first housing 1120, and the tilt guide portion 1141 can be maintained.

[0277] In the third region AR3, the tilt guide portion 1141 may be disposed. The tilt guide portion 1141 may include the first protrusion PR1 and the second protrusion PR2 as described above. At this time, the first protrusion PR1 and the second protrusion PR2 can be respectively disposed on the second surface 1141b and the first surface 1141a of the base BS. Thus, also in other embodiments described below, the first protrusion PR1 and the second protrusion PR2 can be variously positioned on the opposing surfaces of the base BS.

[0278] The first protrusion groove PH1 may be located in the fourth seating groove 1131S4a. Further, the first protrusion PR1 of the tilt guide portion 1141 may be received in the first protrusion groove PH1. Therefore, the first protrusion PR1 can be in contact with the first protrusion groove PH1. The maximum diameter of the first protrusion groove PH1 can correspond to the maximum diameter of the first protrusion PR1. This can be similarly applied to the second protrusion groove PH2 and the second protrusion PR2. That is, the maximum diameter of the second protrusion groove PH2 can correspond to the maximum diameter of the second protrusion PR2. Further, thereby, the second protrusion PR2 can be in contact with the second protrusion groove PH2. With such a configuration, tilting about the first axis with reference to the first protrusion PR1 and tilting about the second axis with reference to the second protrusion PR2 can be easily performed, and the tilt radius can be improved.

[0279] Further, the tilt guide portion 1141 may be arranged side by side with the second member 1131a and the first member 1126 in the third direction (Z-axis direction), and the tilt guide portion 1141 may overlap with the optical member 1132 in the first direction (X-axis direction). More specifically, in the embodiment, the first protrusion PR1 may overlap with the optical member 1132 in the first direction (X-axis direction). Further, at least a part of the first protrusion PR1 may overlap with the fifth coil 1152c or the fifth magnet 1151c in the first direction (X-axis direction). That is, each protrusion, which is the center axis of tilt in the camera actuator according to the embodiment, may be positioned adjacent to the center of gravity of the mover 1130. Thereby, the tilt guide portion may be positioned adjacent to the center of gravity of the holder. Thereby, the camera actuator according to the embodiment can minimize the moment value for tilting the holder, and can also minimize the current consumption applied to a coil portion or the like for tilting the holder, so that the power consumption and the reliability of the element can be improved.

[0280] Furthermore, the second magnetic body 1142 and the first magnetic body 1143 may not overlap with the fifth coil 1152c or the optical member 1132 in the first direction (X-axis direction). In other words, in the embodiment, the second magnetic body 1142 and the first magnetic body 1143 may be arranged separated from the fifth coil 1152c or the optical member 1132 in the third direction (Z-axis direction). Thereby, the magnetic force transmitted from the second magnetic body 1142 and the first magnetic body 1143 to the fifth coil 1152c can be minimized. Therefore, the camera actuator according to the embodiment can easily perform vertical driving (Y-axis tilt) and can minimize the power consumption.

[0281] Furthermore, as described above, the second Hall sensor 1153b located inside the fifth coil 1153c senses a change in magnetic flux, whereby position sensing between the fifth magnet 1151c and the second Hall sensor 1153b can be performed. At this time, the offset voltage of the second Hall sensor 1153b can be changed by the influence of the magnetic field formed by the second magnetic body 1142 and the first magnetic body 1143.

[0282] In the first camera actuator according to the embodiment, the second member 1131a, the second magnetic body 1142, the first magnetic body 1143, the first member 1126, the tilt guide portion 1141, and the holder 1131 may be arranged in this order in the third direction. However, since the second magnetic body is located inside the second member and the first magnetic body is located inside the first member, they may be arranged in the order of the second member, the first member, the tilt guide portion, and the holder.

[0283] Also, in the embodiment, the isolation distance of the second magnetic body 1142 and the first magnetic body 1143 from the holder 1131 (or the optical member 1132) in the third direction may be larger than the isolation distance between the tilt guide portions 1141. Thereby, the second Hall sensor 1153b below the holder 1131 may also be arranged at a predetermined distance from the second magnetic body 1142 and the first magnetic body 1143. Therefore, the influence of the magnetic field formed by the second magnetic body 1142 and the first magnetic body 1143 on the second Hall sensor 1153b can be minimized, and it is possible to prevent the Hall voltage from concentrating in the positive or negative direction and saturating. That is, such a configuration can provide a range in which Hall electrode calibration (Hall Calibration) can be performed. Furthermore, although the temperature also affects the electrodes of the Hall sensor and the resolution of the camera lens varies depending on the temperature, in the embodiment, since the concentration of the Hall voltage in the positive or negative direction is prevented and compensation for the resolution of the lens is also performed accordingly, a decrease in resolution can be easily prevented.

[0284] Also, circuit design for compensating the offset of the output (i.e., the Hall voltage) of the second Hall sensor 1153b can be easily performed.

[0285] Further, according to the embodiment, a part of the tilt guide portion 1141 may be located outside the fourth holder outer surface compared to the fourth holder outer surface of the holder 1131.

[0286] The tilt guide portion 1141 can be seated in the fourth seating groove 1131S4a with reference to the base BS, excluding the first protrusion PR1 and the second protrusion PR2. In other words, the length of the base BS in the third direction (Z-axis direction) may be smaller than the length of the fourth seating groove 1131S4a in the third direction (Z-axis direction). With such a configuration, miniaturization can be easily achieved.

[0287] Further, the maximum length of the tilt guide portion 1141 in the third direction (Z-axis direction) may be larger than the length of the fourth seating groove 1131S4a in the third direction (Z-axis direction). Therefore, as described above, the end of the second protrusion PR2 can be located between the fourth holder outer surface and the first member 1126. That is, at least a part of the second protrusion PR2 may be located in the direction opposite to the third direction (Z-axis direction) with respect to the holder 1131. In other words, the holder 1131 may be separated from the end of the second protrusion PR2 (the portion in contact with the second protrusion groove) by a predetermined distance in the third direction (Z-axis direction).

[0288] Further, the front surface 1131aes of the second member 1131a according to the embodiment may be separated from the front surface 1126es of the first member 1126. In particular, the front surface 1131aes of the second member 1131a according to the embodiment may be located in the third direction (Z-axis direction) from the front surface 1126es of the first member 1126. Alternatively, the front surface 1131aes of the second member 1131a according to the embodiment may be located inside the front surface 1126es of the first member 1126. For this purpose, the first member 1126 may have a structure that extends and bends inward. Also, a part of the second member 1131a may be located in the groove formed by the extended and bent structure of the first member 1126 described above.

[0289] With such a configuration, since the second member 1131a is located inside the first member 1126, space efficiency can be improved and miniaturization can be achieved. Further, even when driving by electromagnetic force (tilting or rotation of the mover 1130) is performed, since the second member 1131a does not protrude outside the first member 1126, contact with surrounding elements can be blocked. Thereby, reliability can be improved.

[0290] Also, a predetermined separation space may exist between the second magnetic body 1142 and the first magnetic body 1143. In other words, the second magnetic body 1142 and the first magnetic body 1143 may face each other with the same polarity.

[0291] FIG. 12a is a perspective view of a first camera actuator according to an embodiment, FIG. 12b is a view seen along SS' of FIG. 12a, and FIG. 12c is an exemplary view of the movement of the first camera actuator shown in FIG. 12b.

[0292] Referring to FIGS. 12a to 12c, Y-axis tilting can be performed with the first camera actuator according to the embodiment. That is, by rotating in the first direction (X-axis direction), OIS can be realized.

[0293] In the embodiment, the fifth magnet 1151c disposed below the holder 1131 can tilt or rotate the mover 1130 with respect to the second direction (Y-axis direction) by forming an electromagnetic force with the fifth coil 1152c.

[0294] Specifically, the repulsive force between the second magnetic body 1142 and the first magnetic body 1143 can be transmitted to the second member 1131a and the first member 1126, and finally transmitted to the tilt guide portion 1141 disposed between the first member 1126 and the holder 1131. Thereby, the tilt guide portion 1141 can be pressed by the mover 1130 and the first housing 1120 by the above-described repulsive force.

[0295] Further, the second protrusion PR2 may be supported by the first member 1126. At this time, in the embodiment, the tilt guide portion 1141 can rotate or tilt with respect to the second protrusion PR2 protruding toward the first member 1126 as a reference axis (or rotation axis), that is, with respect to the second direction (Y-axis direction) as a reference. In other words, the tilt guide portion 1141 can rotate or tilt in the first direction (X-axis direction) with respect to the second protrusion PR2 protruding toward the first member 1126 as a reference axis (or rotation axis).

[0296] For example, the OIS can be realized by rotating the mover 1130 by a first angle θ1 in the X-axis direction (X1 → X1a) by the first electromagnetic forces F1A and F1B between the fifth magnet 1151c disposed in the third seating groove and the fifth coil portion 1152c disposed on the third substrate side portion.

[0297] Conversely, the OIS can be realized by rotating the mover 1130 by a first angle θ1 in the opposite direction of the X-axis direction (X1 → X1b) by the first electromagnetic forces F1A and F1B between the fifth magnet 1151c disposed in the third seating groove and the fifth coil portion 1152c disposed on the third substrate side portion.

[0298] The first angle θ1 may be ±1° to ±3°, but is not limited thereto.

[0299] Hereinafter, in the first camera actuator according to various embodiments, the electromagnetic force can generate a force in the described direction to move the mover, and can also move the mover in the described direction even when generating a force in a different direction. That is, the described direction of the electromagnetic force means the direction of the force generated by the magnet and the coil to move the mover. For example, the first electromagnetic forces (F1A, F1B) can act in the third direction or the opposite direction of the third direction.

[0300] Further, the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 may be arranged side by side along the third direction (Z-axis direction). In other words, the center line TL1 connecting the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 may be parallel to the third direction (Z-axis direction).

[0301] Also, the second protrusion PR2 may be bisected, and the bisecting line TL2 corresponding to the third direction (Z-axis direction) may be arranged side by side with the center line TL1. In other words, the bisecting line TL2 may be a line that bisects the second protrusion PR2 in the first direction (X-axis direction), and there may be a plurality of them.

[0302] In an embodiment, such a bisecting line TL2 may be arranged at a distance from the center line TL1 in the first direction (X-axis direction). The bisecting line TL2 may be located above the center line TL1. With such a configuration, the isolation distance between the fifth coil 1152c or the fifth magnet 1151c increases, and the holder can tilt more accurately in two axes. Furthermore, the position of the holder can be maintained the same when no current is applied to the coil.

[0303] More specifically, since the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 are separated from the bisecting line TL2 in the first direction (X-axis direction), the force (e.g., repulsive force) between the second magnetic body 1142 and the first magnetic body 1143 can act separated from the bisecting line TL2 corresponding to the optical axis in the first direction (X-axis direction). Also, due to such a force, momentum is generated in the mover 1130. However, if the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 are located on the bisecting line TL2, there is a problem that the calibration progress and the position of the tilt guide portion and the second magnetic body 1142 are not maintained after tilting. That is, the camera actuator according to the embodiment is configured such that the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 are not arranged on the bisecting line TL2, so that the position of the tilt guide portion and the second magnetic body 1142 can be maintained after tilting or rotation.

[0304] In other embodiments, the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 may be spaced apart in the first direction (X-axis direction).

[0305] Also, the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 do not have to be located on the bisector TL2. For example, the center MC1 of the second magnetic body 1142 and the center MC2 of the first magnetic body 1143 may be located above the bisector TL2.

[0306] Thereby, the isolation distance between the fifth coil 1152c or the fifth magnet 1151c increases, and the holder can tilt more accurately in two axes. Further, the position of the holder can be maintained the same when no current is applied to the coil.

[0307] Also, the second magnetic body 1142 and the first magnetic body 1143 may have different lengths in the first direction (X-axis direction).

[0308] In an embodiment, the second magnetic body 1142 that is coupled to the second member 1131a and tilts together with the mover 1130 may have an area larger than the area of the first magnetic body 1143. As an example, the second magnetic body 1142 may have a length in the first direction (X-axis direction) larger than the length of the first magnetic body 1143 in the first direction (X-axis direction). Also, the second magnetic body 1142 may have a length in the second direction (Y-axis direction) larger than the length of the first magnetic body 1143 in the second direction (Y-axis direction). Also, the first magnetic body 1143 may be located within a virtual straight line extending in the third direction at both ends of the second magnetic body 1142.

[0309] With such a configuration, when tilting or rotating, even if one side magnetic body (for example, the second magnetic body) tilts, it is possible to easily prevent other forces than the vertical force from being generated due to the tilt. That is, even if the second magnetic body tilts up and down together with the mover 1130, it does not receive a force (for example, a repulsive force or an attractive force) opposing the tilt from the first magnetic body 1143. Thereby, the drive efficiency can be improved.

[0310] Figure 13a is a view seen along RR’ in Figure 12a. Figure 13b is an exemplary view of the movement of the first camera actuator shown in Figure 13a.

[0311] Referring to Figures 13a and 13b, X-axis tilting can be performed. That is, by tilting or rotating the mover 1130 in the Y-axis direction, OIS can be achieved.

[0312] In an embodiment, the third magnet 1151a and the fourth magnet 1151b disposed on the holder 1131 each form an electromagnetic force with the third coil 1152a and the fourth coil 1152b, and can tilt or rotate the tilt guide portion 1141 and the mover 1130 with respect to the first direction (X-axis direction).

[0313] Specifically, the repulsive force between the second magnetic body 1142 and the first magnetic body 1143 can be transmitted to the first member 1126 and the holder 1131, and finally transmitted to the tilt guide portion 1141 disposed between the holder 1131 and the first member 1126. Thereby, the tilt guide portion 1141 can be pressed by the mover 1130 and the first housing 1120 due to the above-described repulsive force.

[0314] Also, the first-1 protrusion PR1a and the first-2 protrusion PR1b may be supported by the first protrusion groove PH1 formed in the fourth seating groove 1131S4a of the holder 1131 at a distance in the first direction (X-axis direction). Further, in the embodiment, the tilt guide portion 1141 can rotate or tilt with respect to the first protrusion PR1 protruding toward the holder 1131 (e.g., toward the third direction) as a reference axis (or rotation axis), that is, with respect to the first direction (X-axis direction).

[0315] For example, by the second electromagnetic forces F2A and F2B between the third and fourth magnets 1151a and 1151b disposed in the first seating groove and the third and fourth coil portions 1152a and 1152b disposed on the first and second substrate side portions, the mover 1130 can be rotated by a second angle θ2 in the Y-axis direction (Y1 → Y1a) while realizing OIS. Also, by the second electromagnetic forces F2A and F2B between the third and fourth magnets 1151a and 1151b disposed in the first seating groove and the third and fourth coil portions 1152a and 1152b disposed on the first and second substrate side portions, the mover 1130 can be rotated by the second angle θ2 in the Y-axis direction (Y1 → Y1b), thereby realizing OIS. The second angle θ2 may be ±1° to 3°. However, it is not limited thereto.

[0316] Also, as described above, the electromagnetic force by the third and fourth magnets 1151a and 1151b and the third and fourth coils 1152a and 1152b can act in the third direction or the opposite direction of the third direction. For example, the electromagnetic force can be generated in the third direction (Z-axis direction) from the left side portion of the mover 1130 and act in the opposite direction of the third direction (Z-axis direction) from the right side portion of the mover 1130. Therefore, the mover 1130 can rotate with reference to the first direction. Or, it can move along the second direction.

[0317] Thus, the second actuator according to the embodiment rotationally controls the mover 1130 in the first direction (X-axis direction) or the second direction (Y-axis direction) by the electromagnetic force between the drive magnet in the holder and the drive coil disposed in the first housing, thereby minimizing the occurrence of decent and tilt phenomena during OIS realization and providing the best optical characteristics. Also, as described above, "Y-axis tilt" means rotating or tilting in the first direction (X-axis direction), and "X-axis tilt" means rotating or tilting in the second direction (Y-axis direction).

[0318] FIG. 14 is a perspective view of a second camera actuator according to an embodiment, FIG. 15 is an exploded perspective view of the second camera actuator according to the embodiment, FIG. 16 is a cross-sectional view taken along DD' of FIG. 14, FIGS. 17a, 17b, and 17c are perspective views of a second housing in the second camera actuator according to the embodiment, and FIGS. 18 and 19 are drawings for explaining each drive of a lens assembly according to the embodiment. FIG. 20 is a drawing for explaining the drive of the second camera actuator according to the embodiment.

[0319] Referring to FIGS. 14 to 16, a second camera actuator 1200 according to an embodiment may include a lens unit 1220, a second housing 1230, a second drive unit 1250, a base unit 1260, a second substrate unit 1270, a joining member 1280, a stopper unit ST, and a yoke unit YK. Further, the second camera actuator 1200 may further include a second shield can (not shown), an elastic unit (not shown), and a joining member (not shown).

[0320] The second shield can (not shown) may be located in an area (for example, the outermost side) of the second camera actuator 1200 and may be located so as to surround components (the lens unit 1220, the second housing 1230, the second drive unit 1250, the base unit 1260, the second substrate unit 1270, and the image sensor IS) described later.

[0321] Such a second shield can (not shown) can block or reduce electromagnetic waves generated externally. Thereby, the occurrence of malfunction in the second drive unit 1250 can be reduced.

[0322] The lens unit 1220 may be located within the second 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 and zoom function can be achieved.

[0323] Further, the lens unit 1220 may be located within the second housing 1230. As a result, 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 second housing 1230.

[0324] Specifically, the lens unit 1220 may include a lens group 1221 and a moving assembly 1222.

[0325] 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, description will be made based on one.

[0326] 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.

[0327] 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 1221d. The fourth lens group 1221d may be arranged at the rear end of the third lens group 1221c.

[0328] The first lens group 1221a may be coupled and fixed to the second-1 housing. In other words, the first lens group 1221a may not need to move along the optical axis direction.

[0329] The second lens group 1221b can be coupled to the first lens assembly 1222a and move in the third direction or the optical axis direction. Magnification adjustment can be performed by the movement of the first lens assembly 1222a and the second lens group 1221b.

[0330] The third lens group 1221c can be coupled 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 1221c.

[0331] However, the number of such lens groups is not limited to this, and the above-described fourth lens group 1221d may not be provided, or additional lens groups other than the fourth lens group 1121d may be further arranged.

[0332] 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 lens assembly. 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 the 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.

[0333] Also, the moving assembly 1222 may be coupled to elastic parts (not shown) at the upper end and the 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 and maintained in the third direction (Z-axis direction). The elastic parts (not shown) may be composed of various elastic elements such as leaf springs.

[0334] The moving assembly 1222 is located in the second housing 1230 and may include the first lens assembly 1222a and the second lens assembly 1222b.

[0335] 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.

[0336] The first lens assembly 1222a and the second lens assembly 1222b can each be seated inside the second housing. For example, the recess in which the ball of the first lens assembly 1222a is disposed may be positioned opposite the first side portion. Also, the recess in which the ball of the second lens assembly 1222b is disposed may be positioned opposite the second side portion. A detailed description thereof will be given later.

[0337] Also, on the outer surfaces of the first lens assembly 1222a and the second lens assembly 1222b, the second drive magnet can be seated. For example, on the outer surface of the second lens assembly 1222b, the second magnet 1252b can be seated. On the outer surface of the first lens assembly 1222a, the first magnet 1252a can be seated.

[0338] The second housing 1230 may be disposed between the lens unit 1220 and a second shield can (not shown). Also, the second housing 1230 may be disposed so as to surround the lens unit 1220.

[0339] The second housing 1230 may include a second-1 housing 1231 and a second-2 housing 1232. The second-1 housing 1231 can be coupled to the first lens group 1221a and can also be coupled to the first camera actuator described above. The second-1 housing 1231 may be positioned in front of the second-2 housing 1232.

[0340] Also, the second-2 housing 1232 may be positioned at the rear end of the second-1 housing 1231. The lens unit 1220 can be seated inside the second-2 housing 1232.

[0341] The second housing 1230 (or the second - 2 housing 1232) may have holes formed on its side. The first coil 1251a and the second coil 1251b may be disposed in the holes. The holes may be positioned corresponding to the grooves of the moving assembly 1222 described above.

[0342] In an embodiment, the second housing 1230 (particularly, the second - 2 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 positioned 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 second drive coil 1251 may be located on the first side portion 1232a and the second side portion 1232b. Also, the second 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 1271 may be located on the outer surface of the first side portion 1232a, and the second substrate 1272 may be located on the outer surface of the second side portion 1232b.

[0343] As another example, the first and second guide grooves facing the recesses (seating grooves where the first and second balls are seated) of the first lens assembly 1222a may be located on the first side portion. Also, the first and second guide grooves facing the recesses of the second lens assembly 1222b may be located on the second side portion. At this time, another member (for example, a guide portion) including the first and second guide grooves may be structured to be coupled with the second - 2 housing 1232. However, in this embodiment, the description is based on the integrated structure in which the first and second guide grooves are formed in the second - 2 housing 1232. Further, as in other examples, the first guide portion and the second guide portion may be positioned corresponding to each other. For example, the first guide portion and the second guide portion may be opposed to each other with respect 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).

[0344] The first guide part and the second guide part may include at least one groove (for example, 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. Accordingly, 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.

[0345] 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 second housing 1230 or a rail formed inside the second side portion 1232b of the second housing 1230.

[0346] Thereby, the first lens assembly 1222a and the second lens assembly 1222b can move in the third direction.

[0347] According to an embodiment, the first ball B1 may be disposed on the upper side portion of the first lens assembly 1222a or the second lens assembly 1222b. Further, the second ball B2 may be disposed on the lower side portion of the first lens assembly 1222a or the second lens assembly 1222b. For example, the first ball B1 may be located above the second ball B2. Accordingly, depending on the position, the first ball B1 may at least partially overlap the second ball B2 along the first direction (X-axis direction).

[0348] Further, the second-2 housing 1232 may include first guide grooves GG1a and GG2a facing the first recess RS1. Further, the second-2 housing 1232 may include second guide grooves GG1b and GG2b facing the second recess RS2. The first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves extending in the third direction (Z-axis direction). Further, the first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves having different shapes from each other. For example, the first guide grooves GG1a and GG2a may be grooves with inclined side surfaces, and the second guide grooves GG1b and GG2b may be grooves with side surfaces perpendicular to the bottom surface.

[0349] On the first side portion, a first magnet and a first coil may be located. Also, on the second side portion, a second magnet and a second coil may be located. Further, the second magnet 1252b may be located opposite to the second coil 1251b. Also, the first magnet 1252a may be located opposite to the first coil 1251a.

[0350] 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) may be coupled to the upper surface of the moving assembly 1222. The second elastic member (not shown) may 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 from leaf springs as described above. Also, the first elastic member (not shown) and the second elastic member (not shown) can provide elasticity against the movement of the moving assembly 1222. However, it is not limited to the above-described positions, and the elastic part may be arranged in various positions.

[0351] Also, the second driving unit 1250 can provide a driving force for moving the lens unit 1220 in the third direction (Z-axis direction). Such a second driving unit 1250 may include a second driving coil 1251 and a second driving magnet 1252. Further, the second driving unit 1250 may further include a second hall sensor unit. The second hall sensor unit 1253 includes at least one fourth hall sensor 1253a and may be located inside or outside the second driving coil 1251.

[0352] Due to the electromagnetic force formed between the second driving coil 1251 and the second driving magnet 1252, the moving assembly can move in the third direction (Z-axis direction).

[0353] The second drive coil 1251 may include a first coil 1251a and a second coil 1251b. The first coil 1251a and the second coil 1251b may be disposed in holes formed in side portions of the second housing 1230. Also, the first coil 1251a and the second coil 1251b can be electrically connected to the second substrate portion 1270. Accordingly, the first coil 1251a and the second coil 1251b can receive current or the like via the second substrate portion 1270.

[0354] The second drive magnet 1252 may include a first magnet 1252a and a second magnet 1252b. The first magnet 1252a and the second magnet 1252b may be disposed in the grooves described above in the moving assembly 1222 and may be positioned corresponding to the first coil 1251a and the second coil 1251b.

[0355] The base portion 1260 may be located between the lens portion 1220 and the image sensor IS. Components such as a filter may be fixed to the base portion 1260. Also, the base portion 1260 may be arranged to surround the image sensor described above. With such a configuration, the image sensor is free from foreign matter or the like, so the reliability of the element can be improved. However, this will be omitted in some of the following drawings for explanation. However, it is not limited to such a structure.

[0356] Also, the second camera actuator 1200 may be a zoom actuator and an AF (Auto Focus) actuator. For example, the second camera actuator supports one or more lenses and can move the lenses in accordance with a control signal from a predetermined control unit to perform at least one of an autofocusing function and a zoom function.

[0357] Also, the second camera actuator may be a fixed zoom or a continuous zoom. For example, the second camera actuator can provide movement of the lens group 1221.

[0358] Furthermore, 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 thereto. Therefore, the second camera actuator can perform a high magnification zooming function through the second driving unit. For example, the first lens assembly 1222a and the second lens assembly 1222b may be moving lenses that move through the second driving unit and a guide pin (not shown), and the third lens assembly (not shown) may be a fixed lens, but is not limited thereto. For example, the third lens assembly (not shown) can perform the function of a focator that forms an image of light at a specific position, and the first lens assembly can perform the function of a variator that re-images the image formed by the third lens assembly (not shown) that 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 that 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 that is a variator may have a slight difference depending on the position. Therefore, the second lens assembly can perform a position compensation function for the image formed by the variator. For example, the second lens assembly can perform the function of a compensator that plays a role of accurately imaging the image point formed by the second lens assembly 1222b that is a variator at the actual image sensor position. However, the configuration of the present embodiment will be described based on the following drawings.

[0359] 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. Further, the image sensor may be configured with a plurality of pixels in an array form. Also, the image sensor may be located on the optical axis.

[0360] The second substrate portion 1270 may be in contact with the side portion of the second housing. For example, the second substrate portion 1270 may be located on the outer surfaces (the first side surface) of the first side portion and the outer surface (the second side surface) of the second side portion of the second housing, particularly the second - 2 housing, and may be in contact with the first side surface and the second side surface.

[0361] The stopper portion ST includes a first stopper ST1 disposed at one end and a second stopper ST2 disposed at the other end in the second - 2 housing 1232. The first stopper ST1 and the second stopper ST2 may be sequentially arranged along the optical axis direction.

[0362] Furthermore, there may be a plurality of the first stoppers ST1, which may be respectively arranged on the movement paths of the first lens assembly and the second lens assembly. For convenience, they are described as the first - 1 stopper ST1a and the first - 2 stopper ST1b. Similarly, there may be a plurality of the second stoppers ST2, which may be respectively arranged on the movement paths of the first lens assembly and the second lens assembly. Also, they are described as the second - 1 stopper ST2a and the second - 2 stopper ST2b.

[0363] The first - 1 stopper ST1a and the second - 1 stopper ST2a may be located on the movement path of the first lens assembly. The first - 2 stopper ST1b and the second - 2 stopper ST2b may be located on the movement path of the second lens assembly.

[0364] The first stopper ST1a and the first stopper ST1b may overlap in the second direction. Alternatively, the first stopper ST1a and the first stopper ST1b may be displaced in the second direction.

[0365] In addition, the second stopper ST2a and the second stopper ST2b may be displaced and positioned in the second direction. The distance in the third direction between the first stopper ST1a and the second stopper ST2a may be smaller than the distance between the first stopper ST1b and the second stopper ST2b. This is a configuration that reflects the fact that the movable distance (stroke) of the first lens assembly is shorter than the movable distance (stroke) of the second lens assembly.

[0366] In an embodiment, the second yoke portion or the yoke portion YK may be disposed outside the second driving portion. For example, the yoke portion YK may be disposed outside the first and second coils. The second yoke portion YK may include a first yoke YK1 and a second yoke YK2.

[0367] The first yoke YK1 and the second yoke YK2 may be disposed opposite to each other. For example, the first yoke YK1 and the second yoke YK2 may be positioned corresponding to each other with respect to the optical axis.

[0368] The first yoke YK1 may be positioned adjacent to the first coil 1251a. The second yoke YK2 may be positioned adjacent to the second coil 1251b. The first coil 1251a and the second coil 1251b may be positioned inside the first yoke YK1 and the second yoke YK2. Also, the first yoke YK1, the first coil 1251a, the second coil 1251b, and the second yoke YK2 may be sequentially arranged in one direction (for example, the second direction). The first yoke YK1 can form an attractive force with the first magnet. Also, the second yoke YK2 can form an attractive force with the second magnet. Therefore, the postures of the first and second lens assemblies can be maintained.

[0369] Furthermore, the first yoke YK1 and the second yoke YK2 may have a varying thickness in some regions. With such a configuration, it is possible to suppress the influence of magnetic forces generated from the first and second magnets or the first and second coils on other magnets and coils. For example, the first yoke YK1 can suppress the magnetic force generated by the first magnet from being applied to the second magnet and the second coil.

[0370] Referring to FIGS. 17a, 17b, and 17c, as described above, the second housing 1230 (particularly, the second-2 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 positioned 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 second drive coil may be positioned on the first side portion 1232a and the second side portion 1232b. Also, a second substrate portion can be seated on the outer surfaces of the first side portion 1232a and the second side portion 1232b. The second substrate portion is located outside the drive coil and can be electrically connected to the drive coil.

[0371] For example, a first substrate may be positioned on the outer surface of the first side portion 1232a, and a second substrate may be positioned on the outer surface of the second side portion 1232b.

[0372] Furthermore, first guide grooves GG1a, GG1b on which the first ball and the second ball are seated may be located on the inner surface of the first side portion 1232a. The first guide grooves GG1a, GG1b may face the first recess and the second recess described above. Similarly, second guide grooves GG2a, GG2b on which the first ball and the second ball are seated may be located on the inner surface of the second side portion 1232b. The first guide grooves GG1a, GG1b may face the first recess and the second recess described above.

[0373] Furthermore, the first side portion 1232a may include a first side hole 1232ah. A first magnet may be positioned in the first side hole 1232ah. Further, the first side hole 1232ah may be shorter than the first coil in the first direction.

[0374] Also, the second side portion 1232b may include a second side hole 1232bh. A second magnet may be positioned in the second side hole 1232bh. Further, the second side hole 1232bh may be shorter than the second coil in the first direction.

[0375] Furthermore, the second - 2 housing 1232 may include a housing hole 1232h disposed either in the upper part or the lower part. The housing hole 1232h enables easy connection and inspection (e.g., vision inspection) of the first lens assembly and the second lens assembly.

[0376] Also, the first guide grooves GG1a, GG1b located in the first side portion 1232a may extend in the third direction. Further, the first guide grooves GG1a, GG1b may have different shapes from each other. For example, any one of the first guide grooves GG1a may be an inclined groove, and the other GG1b may be a flat structure. This can also be similarly applied to the second guide grooves GG2a, GG2b. The first and second balls are seated in the inclined groove and the flat structure, and the first lens assembly or the second lens assembly can move along the optical axis direction.

[0377] Referring to FIGS. 18 and 19, in the camera module 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 can move horizontally with respect to the optical axis, that is, along the rail located on the inner surface of the housing in the third direction (Z - axis direction) or the direction opposite to the third direction via the first ball B1 and the second ball B2.

[0378] Specifically, in the camera module according to the embodiment, the first magnet 1252a may be provided on the first lens assembly 1222a by, for example, a vertical magnetization method. For example, in the embodiment, both the N pole and the S pole of the first magnet 1252a may be positioned to face the first coil 1251a. Accordingly, the N pole and the S pole of the first magnet 1252a may be respectively arranged so as to correspond to a region where a current flows in the X-axis direction or the opposite direction in the first coil 1251a.

[0379] In the embodiment, when a magnetic force is applied in the direction opposite to the second direction (Y-axis direction) at the N pole of the first magnet 1252a and a current DE1 flows in the direction opposite to the first direction (X-axis direction) from the first coil 1251a corresponding to the N pole, an electromagnetic force DEM1 can act in the third direction (Z-axis direction) according to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0380] Also, 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) from the first coil 1251a corresponding to the S pole, an electromagnetic force DEM1 can act in the Z-axis direction due to the interaction of electromagnetic forces.

[0381] At this time, since the first coil 1251a is fixed to the side portion of the second housing, the first lens assembly 1222a on which the first magnet 1252a is disposed can move in the direction opposite to the Z-axis direction by the electromagnetic force DEM1 according to the current direction. That is, the second drive magnet can move in the direction opposite to the electromagnetic force applied to the second drive coil. Also, the direction of the electromagnetic force can be changed by the current in the coil and the magnetic force of the magnet.

[0382] Therefore, the first lens assembly 1222a can move along a rail located on the inner surface of the housing via the first ball B1 and the second ball B2 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.

[0383] The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 in which the first ball B1 is seated. Further, the first lens assembly 1222a or the second lens assembly 1222b may include a second recess RS2 in which the second ball B2 is seated. 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 first ball B1 and the second ball B2 can adjust the moving distance in the optical axis direction 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 B1 and B2.

[0384] Also, in the camera module according to the embodiment, the second magnet 1252b may be provided in the second lens assembly 1222b by, for example, a vertical magnetization method. For example, in the embodiment, both the N pole and the S pole of the second magnet 1252b may be positioned to face the second coil 1251b. Thereby, the N pole and the S pole of the second magnet 1252b may be respectively arranged so as to correspond to a region in which a current flows in the X-axis direction or the opposite direction in the second coil 1251b.

[0385] In the embodiment, when a magnetic force DM2 is applied in the second direction (Y-axis direction) by the 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) according to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0386] Also, in the embodiment, when a magnetic force in the opposite direction is applied in the second direction (Y-axis direction) by the S pole of the second magnet 1252b and a current DE2 flows in the opposite direction of the first direction (X-axis direction) in the second coil 1251b corresponding to the S pole, an electromagnetic force DEM2 can act in the Z-axis direction due to the interaction of electromagnetic forces.

[0387] At this time, since the second coil 1251b is fixed to the side portion of the second housing, the second lens assembly 1222b in which the second magnet 1252 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 second 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.

[0388] Referring to FIG. 20, in the camera module according to the embodiment, the second driving unit can provide driving forces F3A, F3B, F4A, and 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 second driving unit may include a second driving coil 1251 and a second driving magnet 1252 as described above. Further, due to the electromagnetic force formed between the second driving coil 1251 and the second driving magnet 1252, the lens unit 1220 can move along the third direction (Z-axis direction).

[0389] 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 second housing 1230. Further, the second coil 1251b can be electrically connected to the first substrate 1271. The first coil 1251a can be electrically connected to the second substrate 1272. Therefore, 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 second substrate portion 1270.

[0390] At this time, the first lens assembly 1222a to which the first magnet 1252a is fixed can move along the third direction (Z-axis direction) due to the electromagnetic forces F3A and F3B between the first coil 1251a and the first magnet 1252a. Also, the second lens group 1221b fixed to the first lens assembly 1222a can move along the third direction.

[0391] Further, due to the electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b, the second lens assembly 1222b to which the second magnet 1252b is fixed can move along the third direction (Z-axis direction). Also, the third lens group 1221c fixed to the second lens assembly 1222b can move along the third direction.

[0392] 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 the 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. With such a configuration, the second camera actuator may be a fixed zoom or a continuous zoom.

[0393] FIG. 21 is a schematic diagram showing a circuit board according to the embodiment.

[0394] Referring to FIG. 21, 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.).

[0395] 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. Thus, the second circuit board portion 1320 is located adjacent to the first coil located 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. In this way, 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.

[0396] Furthermore, the circuit board 1300 may further include a fixed board (not shown) located on the side surface. Thus, 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.

[0397] 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 second driving portion. For example, the electrical connection may be configured by SMT. However, it is not limited to such a method.

[0398] 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.

[0399] In addition, the circuit board 1300 can be electrically connected to other camera modules within the terminal or the processor of 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.

[0400] FIG. 22 is a perspective view of a first lens assembly, a first joining member, a second joining member, and a second lens assembly according to an embodiment.

[0401] Referring to FIG. 22, the first lens assembly 1222a and the second lens assembly 1222b may be arranged at a distance in the optical axis direction (Z-axis direction). In addition, the first lens assembly 1222a and the second lens assembly 1222b can be moved along the optical axis direction (Z-axis direction) by the second driving unit. For example, an Auto Focus or Zoom function can be achieved by the movement of the first lens assembly 1222a and the second lens assembly 1222b.

[0402] In addition, the first lens assembly 1222a may include a first lens holder LAH1 that holds and couples the second lens group 1221b. The first lens holder LAH1 may be coupled to the second lens group 1221b. In addition, the first lens holder LAH1 may include a first lens hole LH1 for accommodating the second lens group 1221b. That is, the second lens group 1221b including at least one lens may be disposed in the first lens hole LH1. The first lens holder LAH1 is the same as the accommodating portion (for example, the first accommodating portion, the second accommodating portion) described later and is used interchangeably.

[0403] Further, the second lens assembly 1222b may include a second lens holder LAH2 that holds and couples the third lens group 1221c. The second lens holder LAH2 may also include a second lens aperture LH2 for accommodating the third lens group 1221c. That is, at least one lens may be disposed in the second lens aperture LH2.

[0404] In an embodiment, each of the first lens assembly 1222a and the second lens assembly 1222b may include outer surfaces adjacent to each other. The first lens assembly 1222a may include a first outer surface MM1, and the second lens assembly 1222b may include a second outer surface MM2. The first outer surface MM1 may be the bottom surface of the first lens holder LAH1 with respect to the optical axis direction (Z-axis direction). Also, a third outer surface MM3, which will be described later, may be the top surface of the first lens holder LAH1. Further, the second outer surface MM2 may be the top surface of the second lens holder LAH2, and the fourth outer surface MM4 may be the bottom surface of the second lens holder LAH2.

[0405] Also, the first outer surface MM1 and the second outer surface MM2 may at least partially overlap in the optical axis direction (Z-axis direction). In an embodiment, the first outer surface MM1 to the fourth outer surface MM4 may at least partially overlap with each other in the optical axis direction (Z-axis direction).

[0406] For example, a joining member (not shown) may be in contact with at least one of the first outer surface MM1 and the second outer surface MM2.

[0407] FIG. 23 is a perspective view of the first lens assembly (or the second lens assembly) according to the embodiment, FIG. 24 is a front view of the first lens assembly (or the second lens assembly) according to the embodiment, FIG. 25 is a side view of the first lens assembly (or the second lens assembly) according to the embodiment, FIG. 26 is a rear view of the first lens assembly (or the second lens assembly) according to the embodiment, and FIG. 27 is another side view of the first lens assembly (or the second lens assembly) according to the embodiment.

[0408] Referring to FIG. 23, as described above, the first lens assembly 1222a and the second lens assembly 1222a can move in the optical axis direction or the third direction (Z-axis direction). In the following, the description will be based on the first lens assembly 1222a, but the description of the first lens assembly can also be similarly applied to the second lens assembly 1222a. Further, the first lens assembly 1222a and the second lens assembly 1222a may be arranged along the optical axis, and their respective guide portions may be located on the sides facing each other. For example, the first lens assembly 1222a and the second lens assembly 1222a may be inverted with respect to the optical axis or located in corresponding forms.

[0409] Further, at least one of the first lens assembly 1222a and the second lens assembly 1222b may include a housing portion (lens holder) LAH1 for housing a lens, a guide portion GP, and a lens protrusion LP. In the following, as described above, the description will be based on the first lens assembly 1222a.

[0410] The housing portion or the first lens holder LAH1 includes a first lens hole LH1. Hereinafter, it will be described as the housing portion LAH1. Also, a lens may be arranged in the first lens hole LH1. At this time, there may be a plurality of lenses. For example, at least one of them may be made of glass or the like.

[0411] Furthermore, the guide portion GP may be in contact with the housing portion LAH1 and a ball portion may be arranged. As described above, the ball portion may include a first ball and a second ball. Also, the first ball and the second ball can be located or seated in the first lens assembly 1222a and the guide groove. Thereby, when a driving force (for example, electromagnetic force) is generated by the driving portion, the first lens assembly 1222a can move along the optical axis direction by the rolling of the first ball and the second ball.

[0412] The lens protrusion LP is in contact with the housing portion LAH1 and can correspond to the guide portion GP.

[0413] In an embodiment, the guide portion GP may be located on one side surface or one side portion of the housing portion LAH1. Further, the lens protrusion LP may be located on the other side surface or the other side portion of the housing portion LAH1. For example, the guide portion GP may be located on the side opposite to the lens protrusion LP with respect to the housing portion LAH1.

[0414] Further, the lens protrusion LP according to the embodiment may include a plate LP1 and a support portion LP2. The plate LP1 may be located at the front end of the support portion LP2. Further, the support portion LP2 may be connected to the plate LP1 and may be located at the rear end of the plate LP1. Here, the front end means an end portion in the direction opposite to the optical axis direction, and the rear end means an end portion in the optical axis direction.

[0415] Further, the height Wa of the plate LP1 may be larger than the height Wb of the support portion LP2. Here, the height corresponds to the length in the first direction (X-axis direction). Further, the thickness THb of the lens protrusion LP or the support portion LP2 may decrease along the optical axis. Here, the thickness corresponds to the length in the second direction (Y-axis direction). Further, the length corresponds to the length in the third direction (Z-axis direction). With such a structure, the support force for the plate LP1 can be maintained and the removal can be easily performed. Further, the support force is improved in the first pin groove located in the plate LP1, and the flatness can be easily maintained during removal.

[0416] Further, the length of the plate PL1 according to the embodiment may be smaller than the length of the support portion LP2. Thereby, the ease of removal and the improvement of the support force can be further improved.

[0417] In addition, the guide part GP according to the embodiment may include a side plate GPa and a wing part GPb. The wing part GPb can be in contact with both the side plate GPa and the accommodation part LAH1. Such a wing part GPb may have a thickness THa that decreases along the optical axis direction. Also, there may be a plurality of wing parts GPb. With such a configuration, the supporting force for the side plate GPa can be maintained and the extraction can be easily performed. Furthermore, the supporting force is improved in the second pin groove located in the side plate GPa, and the flatness can be easily maintained during extraction.

[0418] Furthermore, a retainer RT1 may be located on the first outer surface MM1 of the first lens assembly 1222a. The retainer may be located on the outer surfaces (the first and second outer surfaces) facing each other between the first lens assembly and the second lens assembly. The retainer RT1 can be coupled to the first outer surface MM1 through a protrusion / groove structure. Furthermore, a bonding member containing epoxy or the like may be applied to the first outer surface MM1. Thereby, the bonding force between the first outer surface MM1 and the retainer RT1 can be improved. Such a retainer RT1 can prevent the lens located in the first lens hole LH1 from falling off. Furthermore, a plurality of grooves or protrusions may be formed on the first outer surface MM!. Furthermore, a plurality of marks (for example, grooves) may be located on the side surface of the first lens assembly 1222a in the first direction. The positions of the first and second lens assemblies are recognized through the marks, and an inspection for driving the first and second lens assemblies can be performed using the recognition.

[0419] Referring to FIGS. 24 to 26, in the embodiment, the lens protrusion LP may include a first pin groove LPG disposed on the upper surface LPU of the plate LP1. The first pin groove LPG may be located at the center of the upper surface LPU of the plate LP1. For example, the first pin groove LPG may be located at a portion or line that bisects the upper surface LPU of the plate LP1 in the first direction (X-axis direction). Also, the center LPM of the first pin groove LPG may be located on the line that bisects the upper surface LPU of the plate LP1 in the first direction (X-axis direction). The shape of the first pin groove LPG may be various shapes such as circular or block. For example, the shape of the first pin groove LPG can correspond to the shape of a push pin.

[0420] The first pin groove LPG may overlap with the support portion LP2 in the optical axis direction or the third direction (Z-axis direction). With such a configuration, even when a force is applied by the push pin to the side of the first pin groove LPG where the push pin is in close contact for extraction, the flatness of the first lens assembly can be maintained.

[0421] Also, the guide portion GP may include a second pin groove GPG disposed on the upper surface GPU of the guide portion GP. There may be a plurality of second pin grooves GPG. For example, the second pin groove GPG may include a second - 1 pin groove GPG1, a second - 2 pin groove GPG2, and a second - 3 pin groove GPG3. The second - 3 pin groove GPG3 may be located between the second - 1 pin groove GPG1 and the second - 2 pin groove GPG2. Further, the second - 1 pin groove GPG1, the second - 2 pin groove GPG2, and the second - 3 pin groove GPG3 may overlap with each other along the first direction (X-axis direction).

[0422] Also, for the plurality of second pin grooves GPG, both the isolation distances Wc and Wd from the adjacent second pin grooves may be the same. Thereby, the force applied to the second pin groove GPG can be uniformly applied to the guide portion, and the warping of the guide portion can be suppressed.

[0423] Further, according to the embodiment, the length Lb of the guide portion GP in the third direction may be greater than the length La of the lens protrusion portion LP in the third direction. Conversely, the length La of the lens protrusion portion LP may be smaller than the length Lb of the guide portion GP.

[0424] Furthermore, the upper surface GPU of the guide portion GP may be located at the front end of the upper surface LPU of the lens protrusion portion LP. Also, the lower surface GPb of the guide portion GP may be disposed at the rear end of the lower surface LPB of the lens protrusion portion LP. Also, the length of the guide portion GP in the first direction may be greater than the length of the lens protrusion portion LP in the first direction. Therefore, both the length of the guide portion GP in the first direction and the third direction may be greater than that of the lens protrusion portion LP.

[0425] Corresponding to such shapes of the guide portion GP and the lens protrusion portion LP, the number of the second pin grooves GPG may be greater than the number of the first pin grooves LPG. With such a configuration, even when a force is applied to the plurality of second pin grooves GPG by push pins, the straightness or flatness of the guide portion GP can be maintained. Thereby, the guide portion or the first lens assembly can be accurately moved along the Z-axis direction via the ball portion located in the recess of the guide portion GP. In other words, zooming or autofocusing can move along the optical axis and the occurrence of optical axis deviation can be suppressed.

[0426] Furthermore, at least a part of the first pin groove LPG and the second pin groove GPG may overlap. For example, the first pin groove LPG and the second pin groove GPG may overlap in the second direction (Y-axis direction). For example, the second-third pin groove GPG3 may overlap with the first pin groove LPG in the second direction.

[0427] Also, the first pin groove LPG may be located at the rear end of the second pin groove GPG. Thereby, even when a force is applied to the lens protrusion portion LP and the guide portion GP, warping due to a shape or size difference can be suppressed.

[0428] Also, the wing portion GPb may overlap with the second pin groove GPG in the optical axis direction (Z-axis direction). For example, the plurality of wing portions GPb may overlap with each of the plurality of second pin grooves GPG in the optical axis direction. With such a configuration, even if a force is applied by the push pin to the side of the second pin groove where the push pin is in close contact for extraction, the flatness of the first lens assembly, particularly the flatness of the guide portion GP where the ball is disposed, can be maintained.

[0429] Also, the centers of the plurality of second pin grooves GPG (for example, the center of the second-third pin groove) and the center LPM of the first pin groove LPG may be located on a virtual line parallel or aligned in the second direction (Y-axis direction). Thereby, the phenomenon that the guide portion GP warps to one side of the upper or lower part can be suppressed with respect to the force applied to the push pin during extraction.

[0430] Referring further to FIG. 27, according to the embodiment, the side plate GPa of the guide portion GP includes a first region A1, a second region A2, and a third region A3.

[0431] The third region A3 is disposed between the first region A1 and the second region A2. Also, the first region A1, the third region A3, and the second region A2 may be sequentially located in the direction opposite to the first direction.

[0432] The first region A1 may include a first recess RS1. Also, the second region A2 may include a second recess RS2. The first ball and the second ball can be seated in the first recess RS1 and the second recess RS2, respectively.

[0433] Furthermore, a drive yoke may be disposed in the third region A3. The first magnet can be attached to the drive yoke. The drive yoke can be attached to the third region A3 and coupled to the guide portion GP. For example, the drive yoke can be coupled to the side plate GPa. For this purpose, a yoke hole A3h or a coupling protrusion A3p may be further disposed in the third region A3. The drive yoke and the side plate GPa can be coupled to each other through the yoke hole A3h or the coupling protrusion A3p. Furthermore, a joining member (e.g., epoxy, etc.) may be further applied to the third region A3.

[0434] FIG. 28 is a cross-sectional view of a second camera actuator according to an embodiment, and FIG. 29 is an enlarged view of a P portion of FIG. 28.

[0435] Referring to FIGS. 28 and 29, in the second camera actuator, the first yoke YK1 may be disposed adjacent to the first coil 1251a. Also, the second yoke YK2 may be disposed adjacent to the second coil 1251b. Also, the first yoke YK1 may be disposed adjacent to the first magnet 1252a. Also, the second yoke YK2 may be disposed adjacent to the second magnet 1252b.

[0436] Furthermore, the first and second magnets 1252a may include a first pole region (N pole or S pole), a second pole region (S pole or N pole), and neutral regions NA1, NA2. The neutral regions NA1, NA2 may be disposed between the first pole region and the second pole region. Also, in the first magnet 1252a, the first pole region, the neutral region, and the second pole region may be sequentially arranged in the optical axis direction. Similarly, in the second magnet 1252b, the first pole region, the neutral region, and the second pole region may be sequentially arranged in the optical axis direction. Also, the first pole region of the first magnet 1252a and the second magnet 1252b may be the N pole. Also, the second pole region of the first magnet 1252a and the second magnet 1252b may be the S pole. The reverse is also true.

[0437] In an embodiment, when the first lens assembly 1222a is adjacent to the image sensor or moves maximally along the third direction (Z-axis direction), the minimum magnification can be provided. Also, when the first lens assembly 1222a moves maximally to the first camera actuator side or the opposite direction of the third direction, the maximum magnification can be provided. At such minimum or maximum magnifications, the second lens assembly can be present at various positions for autofocus.

[0438] First, the second camera actuator may further include first stoppers ST1a, ST1b disposed at one end or the front end within the second housing (or the second-2 housing 1232), and second stoppers ST2a, ST2b disposed at the other end.

[0439] Also, the first stopper includes a first-1 stopper ST1a disposed on one side and a first-2 stopper ST1b disposed on the other side. Further, the second stopper may include a second-1 stopper ST2a disposed on one side and a second-2 stopper ST2b disposed on the other side. One side and the other side can mean one side and its opposite side in the second direction. The first-1 stopper ST1a may overlap with the second-1 stopper ST2a in the optical axis direction. The first-2 stopper ST1b may overlap with the second-2 stopper ST2b in the optical axis direction.

[0440] Also, 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 dL1 between the guide portion GP and the first stopper ST1a in the first lens assembly 1222a may be smaller than the distance dL2 between the second stopper ST1b and the lens protrusion LP of the first lens assembly. That is, even if the first lens assembly 1222a moves maximally toward the first camera actuator side, the first lens assembly 1222a can collide with the second stopper ST1b after colliding with the first stopper ST1a first. Thereby, even if a lens made of glass (for example, the foremost end) is disposed in the first lens assembly 1222a, the collision during the maximum movement (mecha position) of the first lens assembly 1222a can be minimized. That is, the phenomenon of lens breakage can be suppressed. Further, shock absorption occurs primarily in a guide portion having a large volume or the like, and damage to the first lens assembly can also be minimized.

[0441] Similarly, the distance dL3 between the second stopper ST2b and the guide portion GP of the second lens assembly 1222b may be smaller than the distance dL4 between the first stopper ST2a and the lens protrusion LP of the second lens assembly 1222b.

[0442] That is, even if the second lens assembly 1222b moves maximally in the image sensor or optical axis direction, the second lens assembly 1222b can collide with the first stopper ST2a after colliding with the second stopper ST2b first. Thereby, even if a lens made of glass is disposed in the second lens assembly 1222b, the collision during the maximum movement (mecha position) of the first lens assembly 1222a can be minimized. That is, the phenomenon of lens breakage can be suppressed. Further, shock absorption occurs primarily in a guide portion having a large volume or the like, and damage to the second lens assembly can also be minimized.

[0443] FIG. 30 is a perspective view of a mobile terminal to which the camera module according to the embodiment is applied.

[0444] 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.

[0445] 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.

[0446] 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.

[0447] The processed image frame can be displayed on a predetermined display unit and may be stored in a memory. A camera (not shown) may also be disposed on the front surface of the mobile terminal body.

[0448] For example, the camera module 1000 may include a first camera module 1000 and a second camera module 1000, and OIS can be realized together with an AF or zoom function by the first camera module 1000A.

[0449] The flash module 1530 may include a light emitting element that emits light inside. The flash module 1530 can be operated by the operation of the camera of the mobile terminal or by the control of the user.

[0450] The autofocus device 1510 may include one of the packages of surface light emitting laser elements as a light emitting unit.

[0451] 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.

[0452] 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 electrical energy.

[0453] FIG. 31 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0454] For example, FIG. 31 is an external view of a vehicle including a driving assistance device to which the camera module 1000 according to an embodiment is applied.

[0455] Referring to FIG. 31, the vehicle 700 according to the embodiment may include wheels 13FL and 13FR that rotate by a power source and may include a predetermined sensor. The sensor may be a camera sensor 2000, but is not limited thereto.

[0456] The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 according to the embodiment can acquire video information through the camera sensor 2000 that captures a front video or a surrounding video, determine a lane non-identification situation using the video information, and generate a virtual lane when the lane is not identified.

[0457] For example, the camera sensor 2000 captures the front of the vehicle 700 to acquire a front video, and a processor (not shown) can analyze an object included in such a front video to acquire video information.

[0458] For example, when objects such as lane lines, adjacent vehicles, driving obstacles, and median strips, curbs, street trees, etc. corresponding to indirect road markings 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 can obtain distance information from the objects detected by the camera sensor 2000 to further supplement the video information.

[0459] The video information may be information regarding the objects captured in the video. Such a camera sensor 2000 may include an image sensor and a video processing module.

[0460] The camera sensor 2000 can process still images or moving images obtained by an image sensor (e.g., CMOS or CCD).

[0461] 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.

[0462] 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.

[0463] As described above, the embodiments have been mainly described, but these are merely examples and do not limit the present invention. Those with 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 embodiments. For example, each component specifically shown in the embodiments can be modified and implemented. 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, a first lens assembly and a second lens assembly that move in the optical axis direction with respect to the housing, ball portions located in the first lens assembly and the second lens assembly, and a drive unit that moves the first lens assembly and the second lens assembly, wherein at least one of the first lens assembly and the second lens assembly includes a housing portion that houses a lens, a guide portion in contact with the housing portion where the ball portion is located, and a lens protrusion portion in contact with the housing portion and corresponding to the guide portion, a camera actuator.

2. The guide portion is located on one side surface of the housing portion, The lens protrusion portion is located on the other side surface of the housing portion. The camera actuator according to claim 1.

3. The upper surface of the guide portion is disposed at the front end of the upper surface of the lens protrusion portion. The camera actuator according to claim 1.

4. The lower surface of the guide portion is disposed at the rear end of the lower surface of the lens protrusion portion. The camera actuator according to claim 1.

5. The length of the lens protrusion portion is smaller than the length of the guide portion. The camera actuator according to claim 1.

6. The lens protrusion portion includes a plate and a support portion connected to the plate, The support portion is disposed at the rear end of the plate. The camera actuator according to claim 1.

7. The height of the plate is larger than the height of the support portion. The camera actuator according to claim 6.

8. The length of the plate is smaller than the length of the support portion. The camera actuator according to claim 6.

9. The lens protrusion portion includes a first pin groove disposed on the upper surface of the plate. The camera actuator according to claim 6.

10. The first pin groove overlaps the support portion in the optical axis. The camera actuator according to claim 9.

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