Camera actuator and camera module including the same

Abstract

An embodiment of the present invention provides a camera actuator comprising: a housing; a first lens assembly that moves in an optical axis direction with respect to the housing; a ball portion disposed in the first lens assembly; and a driving portion that moves the first lens assembly, in which: the first lens assembly includes an accommodating portion having a lens hole in which a plurality of lenses are accommodated, and a guide portion that is in contact with the accommodating portion, and in which the ball portion is provided; and an axis of the lens hole is arranged to be offset with respect to an outer surface of the guide portion adjacent to the ball portion.

Description

Technical Field

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

[0002] A camera is a device that takes photos or videos of an object and is mounted on a portable device, a drone, a vehicle, etc. The camera module may have an image stabilization (IS) function that corrects or prevents image shaking caused by a user's motion to improve image quality, an auto focus (AF) function that automatically adjusts a gap between an image sensor and a lens to align the focus of the lens, and a zoom function that increases or decreases the magnification of a distant object through a zoom lens.

[0003] However, in order to accurately perform a zoom function, auto focus (AF), etc. within a camera module, the straightness of a moving lens assembly or a corresponding correction is required. Summary of the invention

[0004] Technical issues

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a camera actuator and a camera device that improve optical straightness according to the bending of a lens assembly.

[0006] Furthermore, embodiments of the present invention may provide a camera actuator and a camera apparatus having improved reliability due to vibration reduction of a lens assembly.

[0007] The technical problem that the present invention seeks to solve is to provide a camera actuator suitable for an ultra-thin, ultra-small and high-resolution camera.

[0008] The problems to be solved in the embodiments are not limited thereto, and it can be said that also include purposes or effects that can be understood from the solutions to the problems or from the embodiments described below.

[0009] Technical Solutions

[0010] A camera actuator according to an embodiment of the present invention includes: a housing; a first lens assembly, which is configured to move relative to the housing along the optical axis; a ball portion, which is located in the first lens assembly; and a driving portion, which is configured to move the first lens assembly, wherein the first lens assembly includes a housing portion and a guide portion, the housing portion has a lens hole, a plurality of lenses are accommodated in the lens hole, the guide portion is configured to contact the housing portion, and the ball portion is arranged in the guide portion, and the axis of the lens hole is arranged to be misaligned with the outer surface of the guide portion adjacent to the ball portion.

[0011] An upper surface of the receiving portion may not be perpendicular to an outer surface of the guide portion adjacent to the ball bearing portion.

[0012] An upper surface of the receiving portion and an outer surface of the guide portion adjacent to the ball bearing portion may form a first angle.

[0013] The camera actuator may include a lens group disposed in a lens hole of the first lens assembly.

[0014] An upper surface of the accommodating portion and a plane perpendicular to the axis of the lens group may form a second angle.

[0015] The first angle and the second angle may have the same magnitude.

[0016] The axis of the lens group may be parallel to the optical axis direction.

[0017] The upper surface of the accommodating portion may include a first end portion located on one side in a direction perpendicular to the optical axis direction and a second end portion located on the other side, and the upper surface of the lens group may include a third end portion located on one side in a direction perpendicular to the optical axis direction and a fourth end portion located on the other side.

[0018] A separation distance between the first end portion and the second end portion in the optical axis direction may be greater than a separation distance between the third end portion and the fourth end portion in the optical axis direction.

[0019] The first end portion may be located at a front end of the second end portion, and the third end portion may overlap with the fourth end portion in a direction perpendicular to the optical axis direction.

[0020] The camera actuator may include a first adjusting member disposed on a bottom surface of the accommodating portion.

[0021] The first adjustment member may be disposed on a bisector of the first lens assembly in a first direction perpendicular to the optical axis direction.

[0022] The first lens assembly may include a second adjusting member disposed to be spaced apart from the first adjusting member.

[0023] The first regulating member and the second regulating member may have different lengths in the optical axis direction.

[0024] The first lens assembly may include a lens protruding portion contacting the accommodating portion and corresponding to the guide portion, the guide portion may be located on one side surface of the accommodating portion, and the lens protruding portion may be located on the other side surface of the accommodating portion.

[0025] A camera actuator according to an embodiment of the present invention includes: a housing; a first lens assembly, which is configured to move relative to the housing along an optical axis; a ball portion, which is located in the first lens assembly; and a driving portion, which is configured to move the first lens assembly, wherein the first lens assembly includes a accommodating portion and a first adjusting member, the accommodating portion has a lens hole for accommodating a plurality of lenses, and the first adjusting member is disposed on a bottom surface of the accommodating portion.

[0026] The first adjustment member may be disposed on a bisector of the first lens assembly in a first direction perpendicular to the optical axis direction.

[0027] The first lens assembly may include a second adjusting member disposed to be spaced apart from the first adjusting member.

[0028] The second adjustment member may be misaligned with a bisector of the first lens assembly in the first direction.

[0029] The first regulating member and the second regulating member may have different lengths in the optical axis direction.

[0030] The first regulating member may extend along the optical axis direction.

[0031] The first lens assembly may include a guide portion which contacts the accommodation portion, and the ball bearing portion is located in the guide portion.

[0032] The first lens assembly may include a lens protruding portion contacting the receiving portion and corresponding to the guide portion.

[0033] The guide portion may be located on one side surface of the accommodating portion, and the lens protruding portion may be located on the other side surface of the accommodating portion.

[0034] The first lens assembly may include a first receiving lens and a second receiving lens which are sequentially disposed in the optical axis direction.

[0035] The first accommodating lens may include a first lens outer surface adjacent to the lens protruding portion and a second lens outer surface adjacent to the guide portion, and the first lens outer surface and the second lens outer surface may be misaligned in a first direction and a second direction perpendicular to the optical axis direction.

[0036] The second accommodating lens may include a third lens outer surface adjacent to the lens protruding portion and a fourth lens outer surface adjacent to the guide portion, and the third lens outer surface and the fourth lens outer surface may be misaligned in a first direction and a second direction perpendicular to the optical axis direction.

[0037] An upper surface of the guide portion may be disposed at a front end of an upper surface of the lens protruding portion.

[0038] The camera actuator may include a first stopper arranged at one end of the shell and a second stopper arranged at the other end of the shell, the first stopper may include a first-first stopper arranged on one side and a first-second stopper arranged on the other side, and the second stopper may include a second-first stopper arranged on one side and a second-second stopper arranged on the other side.

[0039] A distance between the first-first stopper and the guide portion of the first lens assembly may be smaller than a distance between the first-second stopper and the lens protrusion portion of the first lens assembly.

[0040] Beneficial effects

[0041] According to the embodiments of the present invention, a camera actuator and a camera device having improved optical straightness according to bending of a lens assembly can be realized.

[0042] In addition, embodiments of the present invention may realize a camera actuator and a camera apparatus having improved reliability due to vibration reduction of a lens assembly.

[0043] The technical problem to be solved by the present invention is to realize a camera actuator suitable for ultra-thin, ultra-small and high-resolution cameras.

[0044] Various advantages and beneficial effects of the present invention are not limited to the above contents and will be more easily understood in the course of describing the specific embodiments of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a perspective view of a camera module according to an embodiment.

[0046] Figure 2 is an exploded perspective view of a camera module according to an embodiment.

[0047] Figure 3 is from Figure 1 The line A-A' in the graph is observed.

[0048] Figure 4 is a perspective view of a second camera actuator according to an embodiment.

[0049] Figure 5 is an exploded perspective view of a second camera actuator according to an embodiment.

[0050] Figure 6 It is along Figure 4 A cross-sectional view taken along line D-D' in FIG.

[0051] Figure 7 and Figure 8is a diagram for describing each driving of the lens assembly according to the embodiment.

[0052] Fig. 9 is a diagram for describing driving of a second camera actuator according to an embodiment.

[0053] Fig.10 is a perspective view of a portion of a configuration of a second camera module according to an embodiment.

[0054] Fig.11 is a perspective view of a first lens assembly (or a second lens assembly) according to an embodiment.

[0055] Fig.12 is a front view of a first lens assembly (or a second lens assembly) according to an embodiment.

[0056] Fig.13 is a side view of a first lens assembly (or a second lens assembly) according to an embodiment.

[0057] Fig.14 is a rear view of the first lens assembly (or the second lens assembly) according to an embodiment.

[0058] Fig.15 is another side view of the first lens assembly (or the second lens assembly) according to an embodiment.

[0059] Fig.16a is a perspective view of a measuring device according to an embodiment.

[0060] Fig.16b is a side view of a measuring device according to an embodiment.

[0061] Fig.16c is another side view of the measuring device according to the embodiment.

[0062] Fig.17a is a perspective view of a measuring ball, a measuring device, and a first lens assembly according to an embodiment.

[0063] Fig.17b yes Fig.17a Side view of.

[0064] Fig.17c yes Fig.17b A partial cross-sectional view of .

[0065] Fig.17d is a diagram for describing a measurement method using the measurement device according to the embodiment.

[0066] Fig.17e are diagrams illustrating various shapes of lens assemblies according to embodiments.

[0067] Figure 17f to Figure 17h : is a diagram for describing the tilt angle in the measuring method using the measuring device according to the embodiment.

[0068] Fig.17i is an enlarged cross-sectional view of a second camera actuator according to an embodiment.

[0069] Fig.18 is another side view of the first lens assembly (or the second lens assembly) according to an embodiment.

[0070] Fig.19 It is along Fig.18 A stereogram taken along line CC'.

[0071] Fig. 20 It is along Fig.18 The figure is taken along line C-C'.

[0072] Fig.21 yes Fig.18 A diagram of a lens group housed therein.

[0073] Fig. 22 is a diagram of a first lens assembly and a second lens assembly according to an embodiment.

[0074] Fig.23 It is along Fig. 22 The figure is taken along line E-E'.

[0075] Fig.24 is a cross-sectional view of a second camera actuator according to an embodiment.

[0076] Fig.25 yes Fig. 22 Magnified view of portion P in FIG.

[0077] Fig.26 is a schematic diagram illustrating a circuit board according to an embodiment.

[0078] Fig. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0079] Fig.28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied. DETAILED DESCRIPTION

[0080] The present invention may have various modifications and various embodiments, and specific embodiments are illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents or alternatives included in the spirit and technical scope of the present invention.

[0081] Terms including ordinal numbers such as second, first, etc. can be used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from another component. For example, without departing from the scope of the present invention, the second component can be referred to as the first component, and similarly, the first component can also be referred to as the second component. The term "and / or" includes any combination of multiple related / described items or any one of the multiple related / described items.

[0082] When a component is referred to as being "connected" or "coupled" to another component, it should be understood that the component may be directly connected or coupled to the other component, but other components may exist between the component and the other component. On the other hand, when a component is referred to as being "directly connected" or "directly coupled" to another component, it should be understood that no other components exist between the component and the other component.

[0083] The terms used in this application are only used to describe specific embodiments and are not intended to limit the present invention. Unless the context clearly indicates otherwise, singular expressions include plural expressions. In this application, it should be understood that terms such as "including" or "having" are intended to specify the presence of features, numbers, steps, operations, components, parts or combinations thereof described in this specification, but do not preclude the presence or possibility of adding one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0084] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined in this application.

[0085] Hereinafter, various embodiments will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or corresponding components are given the same reference numerals, and repeated descriptions of the same or corresponding components will be omitted.

[0086] Figure 1 is a perspective view of a camera module according to an embodiment, Figure 2 is an exploded perspective view of a camera module according to an embodiment, and Figure 3 It is along Figure 1 The figure is taken along line A-A'.

[0087] Reference Figure 1 and Figure 2, the camera module 1000 according to the embodiment may be composed of a cover member CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. Here, the first camera actuator 1100 may be used as a first actuator in an interchangeable manner, and the second camera actuator 1200 may be used as a second actuator in an interchangeable manner.

[0088] The cover CV may cover the first camera actuator 1100 and the second camera actuator 1200. A coupling force between the first camera actuator 1100 and the second camera actuator 1200 may be improved by the cover CV.

[0089] In addition, the cover CV may be made of a material that performs electromagnetic wave blocking. Therefore, the first camera actuator 1100 and the second camera actuator 1200 within the cover CV may be easily protected.

[0090] In addition, the first camera actuator 1100 may be an optical image stabilizer (OIS) actuator. For example, the first camera actuator 1100 may move an optical member in a direction perpendicular to an optical axis (an axis of incident light).

[0091] 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".

[0092] The first camera actuator 1100 can change the path of light. In an embodiment, the first camera actuator 1100 can vertically change the path of light through an internal optical component (e.g., a prism or a mirror). For example, the optical component can change the light from a first direction (X-axis direction) to a third direction (Z-axis direction). Alternatively, the optical component can change the light from a first axis to a second axis. With this configuration, even when the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be set inside the mobile terminal by changing the light path, and thus a magnification function, an auto focus (AF) function, a zoom function, and an OIS function can be performed.

[0093] However, this is not limited to the above, and the first camera actuator 1100 may change the light path vertically or a plurality of times at a predetermined angle.

[0094] The second camera actuator 1200 may be disposed at a rear end portion of the first camera actuator 1100. The second camera actuator 1200 may be coupled to the first camera actuator 1100. In addition, the coupling between the second camera actuator 1200 and the first camera actuator 1100 may be implemented in various ways.

[0095] In addition, the second camera actuator 1200 may be a zoom actuator or an auto focus (AF) actuator. For example, the second camera actuator 1200 may support one or more lenses and may move the lenses according to a control signal from a predetermined control part to perform an auto focus function or a zoom function.

[0096] Additionally, one or more lenses may be independently or individually movable along the optical axis direction.

[0097] The circuit board 1300 may be disposed at a rear end portion of the second camera actuator 1200. The circuit board 1300 may be electrically connected to the second camera actuator 1200 and the first camera actuator 1100. In addition, a plurality of circuit boards 1300 may exist.

[0098] The camera module according to the embodiment may be composed of a single camera module or a plurality of camera modules. For example, the plurality of camera modules may include a first camera module and a second camera module.

[0099] In addition, the first camera module may include a single actuator or a plurality of actuators. For example, the first camera module may include a first camera actuator 1100 and a second camera actuator 1200.

[0100] The second camera module may be disposed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving the lens portion. The actuator may be a voice coil motor, a microactuator, a silicon actuator, etc., and the actuator may be applied in various ways such as an electrostatic type, a thermal type, a bimorph type, and an electrostatic force type, but is not limited thereto. In addition, in this specification, the camera actuator may be referred to as an actuator, etc. In addition, a camera module composed of a plurality of camera modules may be installed in various electronic devices such as mobile terminals. In addition, the actuator may be a device that moves or tilts a lens or an optical member. However, the following description will be based on the concept that the actuator includes a lens or an optical member. In addition, the actuator may be referred to as a "lens transmission device", "lens moving device", "optical member transmission device", "optical member moving device", etc.

[0101] Reference Figure 3 , a camera module according to an embodiment may include a first camera actuator 1100 having an OIS function, and a second camera actuator 1200 having a zoom function and an auto focus (AF) function.

[0102] Light may be incident into the camera module or the first camera actuator through an aperture area located on the upper surface of the first camera actuator 1100. That is, the light is first incident into the interior of the first camera actuator 1100 in a vertical direction (e.g., in an X-axis direction based on the incident light), and the light path may be changed into an optical axis direction (e.g., a Z-axis direction) by an optical member. Then, the light may pass through the second camera actuator 1200 and may be incident on 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 is described as the optical axis direction as follows. The optical axis direction may correspond to a direction from the first camera actuator to the second camera actuator (or image sensor) or from the second camera actuator to the image sensor. Alternatively, the optical axis direction may correspond to a direction in which the moving component moves from the second camera actuator. In addition, the first direction or the X-axis direction is described as a vertical direction. In addition, the second direction or the Y-axis direction is described as a horizontal direction.

[0103] In this specification, the bottom surface refers to a side portion in a first direction. The first direction is the X-axis direction in the drawings, and can be used interchangeably with the second axis direction, etc. The second direction is the Y-axis direction in the drawings, and can be used interchangeably with the first axis direction, etc. The second direction is a direction perpendicular to the first direction. In addition, the third direction is the Z-axis direction in the drawings, and can be used interchangeably with the third axis direction, etc. The third direction is a direction perpendicular to both the first direction and the second direction. Here, the third direction (Z-axis direction) corresponds to the optical axis direction, and the first direction (X-axis direction) and the second direction (Y-axis direction) are directions perpendicular to the optical axis. In addition, in the following description of the first camera actuator and the second camera actuator, the optical axis direction is the third direction (Z-axis direction), and the following description is given based on this.

[0104] In addition, in the present specification, the inside may be a direction toward the first camera actuator in the cover CV, and the outside may be a direction opposite to the inside. That is, the first camera actuator and the second camera actuator may be located on the inside of the cover CV, and the cover CV may be located on the outside of the first camera actuator or the second camera actuator.

[0105] With this configuration, in the camera module according to the embodiment, the space limitation of the first camera actuator and the second camera actuator can be improved by changing the path of light. That is, in the camera module according to the embodiment, the light path can be extended while minimizing the thickness of the camera module, thereby corresponding to the change in the path of light. In addition, it should be understood that the second camera actuator can also provide a wide range of magnifications by controlling the focus in the extended light path, etc.

[0106] In addition, in the camera module according to the embodiment, OIS can be implemented by controlling the light path passing through the first camera actuator, and thus the occurrence of decentering or tilting phenomenon can be minimized and optimal optical characteristics can be achieved.

[0107] In addition, the second camera actuator 1200 may include an optical system and a lens driving part. For example, at least one of the first lens assembly, the second lens assembly, and the third lens assembly may be provided in the second camera actuator 1200.

[0108] In addition, the second camera actuator 1200 is equipped with coils and magnets to perform a high-magnification zoom function and an auto focus function.

[0109] For example, the first lens assembly and the second lens assembly may be moving lenses moved by coils, magnets, and guide pins, and the third lens assembly may be a fixed lens, but they are not limited thereto.

[0110] Meanwhile, when an actuator for OIS and an actuator for AF / zoom are provided according to an embodiment of the present invention, magnetic interference with a magnet for AF / zoom can be prevented when the OIS is driven. Since the first driving magnet of the first camera actuator 1100 is provided separately from the second camera actuator 1200, magnetic 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 image stabilization, optical image stabilization, optical image correction, shake correction, etc.

[0111] In particular, the optical member RM in the first camera actuator 1100 may be tilted with respect to the X-axis or the Y-axis. Therefore, the optical path may be easily changed according to the X-axis tilt or the Y-axis tilt.

[0112] The optical member RM may be mounted on a holder of the first camera actuator or the like. In an embodiment, the optical member RM may be composed of a mirror or a prism. In the following, a prism is illustrated as a standard, but the prism may be composed of a plurality of lenses as in the above-described embodiment. Alternatively, the optical member RM may be composed of a plurality of lenses and a prism or a mirror. The optical member RM may include a reflective portion disposed therein. However, the present invention is not limited thereto.

[0113] The optical member RM may be tilted relative to the X-axis or Y-axis by driving the VCM or the like in the first camera actuator 1100. That is, OIS may be implemented while tilting or rotating the optical member RM relative to the Y-axis direction or the X-axis direction.

[0114] Figure 4 is a perspective view of a second camera actuator according to an embodiment, Figure 5is an exploded perspective view of a second camera actuator according to an embodiment, Figure 6 It is along Figure 4 The cross-sectional view taken along the line D-D' in FIG. Figure 7 and Figure 8 is a diagram for describing each driving of the lens assembly according to an embodiment, and Fig. 9 is a diagram for describing driving of a second camera actuator according to an embodiment.

[0115] Reference Figures 4 to 6 According to an embodiment, the second camera actuator 1200 (or a camera device, a zoom lens transmission device, a zoom lens moving device, or a lens transmission device) may include a lens portion 1220, a housing 1230, a yoke portion 1240, a driving portion 1250, a base portion 1260, a substrate portion 1270, and stoppers ST1 and ST2. In addition, the second camera actuator 1200 may further include a protective cover (not shown), an elastic portion (not shown), and an adhesive member (not shown).

[0116] In addition, as described below, the lens group can be moved in the direction of the optical axis. The lens group can be combined with the lens assembly and can be moved together in the direction of the optical axis. At this time, the second camera actuator may include a moving part that moves in the direction of the optical axis together with the lens group, and a fixed part that is relatively fixed and does not move in the direction of the optical axis, which is different from the moving part. In this embodiment, the moving part may include a lens assembly (for example, a first lens assembly and a second lens assembly) and an optical drive magnet (a first drive magnet and a second drive magnet). The fixed part may include a housing, a substrate part, an optical drive coil (a first coil and a second coil) and a Hall sensor. In addition, a drive magnet may be provided on one of the moving part and the fixed part, and a drive coil may be provided on the other of the moving part and the fixed part. Corresponding to this description, the moving distance of the lens assembly described below may correspond to the moving distance of the moving part.

[0117] A protective cover (not shown) can be located in an area (e.g., an outermost area) of the second camera actuator 1200 and can be positioned to surround the components described below (the lens portion 1220, the housing 1230, the drive portion 1250, the base portion 1260, the substrate portion 1270, and the image sensor IS disposed on a circuit board at its rear end).

[0118] The protective cover (not shown) may block or reduce electromagnetic waves generated from the outside. Therefore, the occurrence of malfunction in the driving part 1250 may be reduced.

[0119] The lens portion 1220 may be located within a protective cover (not shown). The lens portion 1220 may be moved in a third direction (Z-axis direction or optical axis direction). Thus, the AF function or zoom function described above may be performed.

[0120] In addition, the lens portion 1220 may be located within the housing 1230. Therefore, at least a portion of the lens portion 1220 may be moved within the housing 1230 in the optical axis direction or the third direction (Z-axis direction).

[0121] Specifically, the lens portion 1220 may include a lens group 1221 and a moving assembly 1222 .

[0122] First, the lens group 1221 may include at least one lens. In addition, a plurality of lens groups 1221 may be provided, but the following description will be made based on one lens group.

[0123] The lens group 1221 is coupled to the moving assembly 1222 , and may be moved in a third direction (Z-axis direction) by an electromagnetic force generated by a first magnet 1252 a and a second magnet 1252 b coupled to the moving assembly 1222 .

[0124] 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 arranged in sequence in the optical axis direction. In addition, the lens group 1221 may further include a fourth lens group. The fourth lens group may be arranged behind the third lens group 1221c.

[0125] The first lens group 1221a may be fixedly combined with the second-first housing (or fixed component). In other words, the first lens group 1221a may not move along the optical axis direction.

[0126] The second lens group 1221b may be coupled to the first lens assembly 1222a and may be movable in a third direction or an optical axis direction. The magnification adjustment may be performed by the movement of the first lens assembly 1222a and the second lens group 1221b.

[0127] The third lens group 1221c may be coupled to the second lens assembly 1222b and may move in a third direction or an optical axis direction. Focus adjustment or autofocus may be performed by the movement of the third lens group 1221.

[0128] However, the number of lens groups is not limited, and the fourth lens group described above may not exist, or an additional lens group other than the fourth lens group 1121d may be provided.

[0129] The moving assembly 1222 may include an aperture area surrounding the lens group 1221. The moving assembly 1222 is used in an interchangeable manner with the first lens assembly and the second lens assembly. The moving assembly 1222 or the lens assembly may move in the optical axis direction (Z-axis direction) within the housing 1230. The moving assembly 1222 may be coupled to the lens group 1221 by various methods. In addition, the moving assembly 1222 may have a groove in the side surface of the moving assembly 1222, and may be coupled to the first magnet 1252a and the second magnet 1252b by the groove. A coupling member or the like may be applied to the groove.

[0130] In addition, the moving assembly 1222 can be connected to an elastic part (not shown) at the upper end and the rear end. Therefore, the moving assembly 1222 can be supported by the elastic part (not shown) when moving along the third direction (Z-axis direction). In other words, the position of the moving assembly 1222 can be maintained in the third direction (Z-axis direction). The elastic part (not shown) can be made of various elastic elements such as a leaf spring.

[0131] The moving assembly 1222 may be located within the housing 1230 and may include a first lens assembly 1222a and a second lens assembly 1222b.

[0132] The area of ​​the second lens assembly 1222b in which the third lens group is installed can be located at the rear end of the first lens assembly 1222a. In other words, the area of ​​the second lens assembly 1222b in which the third lens group 1221c is installed can be located between the area of ​​the first lens assembly 1222a in which the second lens group 1221b is installed and the image sensor.

[0133] The first lens assembly 1222a and the second lens assembly 1222b may face the first guide portion and the second guide portion, respectively. The first guide portion and the second guide portion may be located on the first side portion 1232a and the second side portion 1232b of the housing 1230 (or the second-second housing) described below. The first guide portion and the second guide portion may be integrally or separately disposed on the first side portion 1232a and the second side portion 1232b of the housing 1230 (or the second-second housing) described below. The following description is given based on the integrated type.

[0134] The optical drive magnet may be mounted on the outer surface of each of the first lens assembly 1222a and the second lens assembly 1222b. For example, the second magnet 1252b may be mounted on the outer surface of the second lens assembly 1222b. The first magnet 1252a may be mounted on the outer surface of the first lens assembly 1222a. In this specification, the first lens assembly 1222a may be used interchangeably with the "first coil frame". The second lens assembly 1222b may be used interchangeably with the "second coil frame".

[0135] The housing 1230 may be disposed between the lens portion 1220 and a protective cover (not shown). The housing 1230 may be disposed to surround the lens portion 1220.

[0136] The housing 1230 may include a second-first housing 1231, a second-second housing 1232, and a cover base CB. The second-first housing 1231 may be coupled to the first lens group 1221a, and may also be coupled to the first camera actuator described above. The second-first housing 1231 may be located in front of the second-second housing 1232. The second-first housing may be referred to as a "fixed assembly", "fixed lens assembly", "fixed lens accommodating portion", etc. The second-second housing may be referred to as a "main lens barrel", "lens barrel", "lens barrel", etc.

[0137] The second-second housing 1232 may be located at a rear end portion of the second-first housing 1231. The first and second lens assemblies and the lens portion 1220 may be installed inside the second-second housing 1232.

[0138] The housing 1230 (or the second-second housing 1232) may have a hole formed in its side portion. A first coil 1251a and a second coil 1251b may be provided in the hole. The hole may be positioned to correspond to the groove of the moving assembly 1222 described above. At this time, a plurality of first coils 1251a and second coils 1251b may be provided.

[0139] In an embodiment, the housing 1230 (particularly the second-second housing 1232) may have 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 to correspond to each other. For example, the first side portion 1232a and the second side portion 1232b may be symmetrically arranged relative to the third direction. An optical drive coil 1251 may be positioned on each of the first side portion 1232a and the second side portion 1232b. In addition, the substrate portion 1270 may be mounted on the outer surface of the first side portion 1232a and the second side portion 1232b. In other words, the first substrate may be located on the outer surface of the first side portion 1232a, and the second substrate may be located on the outer surface of the second side portion 1232b.

[0140] The covering base CB may be disposed between the second-first housing 1231 and the second-second housing 1232. The covering base CB may prevent the lens (e.g., the first lens group) disposed or accommodated in the second-first housing 1231 (or the fixed assembly) from being damaged by impact. That is, when the moving assembly moves in the second-second housing 1232, the covering base CB may absorb the impact in the moving assembly. In addition, the covering base CB may have a first-first stopper ST1a and a first-second stopper ST1b located on the rear surface or lower surface of the covering base CB, which will be described below. For example, the first-first stopper ST1a and the first-second stopper ST1b may be located between the covering base CB and the moving assembly (e.g., the first lens assembly). Therefore, the moving assembly may be mainly in contact with the first-first stopper ST1a and the first-second stopper ST1b. Therefore, the reliability of the lens group may be improved.

[0141] In addition, the cover base CB can be coupled to the second-first shell 1231 and the second-second shell 1232 by an adhesive member (e.g., epoxy resin). Therefore, by adjusting the shape of the cover base CB, the coupling with the second-first shell 1231 and the second-second shell 1232 can be easily achieved. In addition, by adding the cover base CB, it can be ensured that at least one of the second-first shell 1231 and the second-second shell 1232 is easy to manufacture.

[0142] The first guide portion and the second guide portion may be located on the first side portion 1232a and the second side portion 1232b of the housing 1230 (particularly, the second-second housing 1232).

[0143] The first guide portion and the second guide portion may be positioned to correspond to each other. For example, the first guide portion and the second guide portion may be positioned to face each other relative to a third direction (Z-axis direction). In addition, the first guide portion and the second guide portion may at least partially overlap each other in the second direction (Y-axis direction).

[0144] The first guide portion and the second guide portion may have at least one groove (eg, a guide groove) or a recessed portion, in which the first rolling ball B1 or the second rolling ball B2 may be installed.

[0145] First, the second camera actuator 1200 may further include a ball portion. The ball portion may include a first ball B1 and a second ball B2. Due to the ball portion, the first lens assembly and the second lens assembly may move along the optical axis direction. At this time, the ball portion may include at least one rolling member, that is, at least one ball. At least one ball may move along the guide groove of the first guide portion and the guide groove of the second guide portion. In addition, at least one ball may move along the recess or groove of the first lens assembly and the recess or groove of the second lens assembly. Therefore, the first ball B1 or the second ball B2 may move in the guide groove of the first guide portion or the guide groove of the second guide portion along the third direction (Z-axis direction).

[0146] Alternatively, the first balls B1 or the second balls B2 may move in a third direction along a track formed on an inner side of the first side portion 1232a of the housing 1230 or a track formed on an inner side of the second side portion 1232b of the housing 1230 .

[0147] Therefore, the first lens assembly 1222a and the second lens assembly 1222b can be moved in the third direction or the optical axis direction. At this time, the second lens assembly 1222b can be arranged to be closer to or closer to the image sensor than the first lens assembly 1222a.

[0148] According to an embodiment, the first rolling ball B1 may contact the first lens assembly 1222a. The second rolling ball B2 may contact the second lens assembly 1222b. Therefore, the first rolling ball B1 may at least partially overlap with the second rolling ball B2 in the first direction (X-axis direction) according to its position.

[0149] In addition, the first guide portion and the second guide portion may have a first guide groove facing the first recess RS1. In addition, the first guide portion and the second guide portion may have a second guide groove facing the second recess RS2.

[0150] In addition, a plurality of first guide grooves or second guide grooves may be provided. In addition, a plurality of balls having at least some different diameters may be located in the plurality of guide grooves.

[0151] The second magnet 1252b may be positioned to face the second coil 1251b. In addition, the first magnet 1252a may be positioned to face the first coil 1251a.

[0152] For example, at least one of the first coil 1251a and the second coil 1251b may be composed of at least one coil. For example, the first coil 1251a may be composed of a plurality of coils. The second coil 1251b may be composed of a plurality of coils. In addition, even when the first coil and the second coil are one coil, the long stroke described below can be achieved.

[0153] In an embodiment, the optical drive coil 1251 may be composed of sub-coils arranged in sequence in the optical axis direction (Z-axis direction). For example, a plurality of sub-coils may be arranged in sequence on both sides of the main lens barrel 1232 in the optical axis direction. The second-second housing may be used interchangeably with the "main lens barrel".

[0154] In this embodiment, the optical drive part (or drive part 1250) may include a first drive part and a second drive part. The first drive part may provide a driving force for moving the first lens assembly 1222a along the optical axis direction. The first drive part may include a first coil 1251a and a first magnet 1252a. In addition, the first drive part may include a first drive coil and a first drive magnet. Therefore, the first coil 1251a may be referred to as a "first drive coil". The first magnet 1252a may be referred to as a "first drive magnet".

[0155] The second driving part may provide a driving force for moving the second lens assembly 1222b along the optical axis direction. The second driving part may include a second coil 1251b and a second magnet 1252b.

[0156] In addition, the second driving part may include a second driving coil and a second driving magnet. Therefore, the second coil 1251b may be referred to as a “second driving coil”. The second magnet 1252b may be referred to as a “second driving magnet”.

[0157] 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. In addition, the first elastic member (not shown) and the second elastic member (not shown) may be formed as a leaf spring as described above. In addition, the first elastic member (not shown) and the second elastic member (not shown) may provide elasticity for the movement of the moving assembly 1222. However, it is limited to the above-mentioned position, and the elastic part may be provided at various positions.

[0158] The driving part 1250 can provide a driving force for moving the lens part 1220 along a third direction (Z-axis direction). The driving part 1250 may include an optical drive coil 1251 and an optical drive magnet 1252. The optical drive coil 1251 and the optical drive magnet 1252 can be positioned to face each other. For example, the first drive coil 1251a and the first drive magnet 1252a can be positioned to face each other. In addition, the second drive coil 1251b and the second drive magnet 1252b can be positioned to face each other. The first drive coil 1251a can be arranged on one side in the housing along the second direction, and the second drive coil 1251a can be arranged on the other side in the housing along the second direction.

[0159] In addition, the driving part 1250 may further include a Hall sensor part. The Hall sensor part 1253 includes at least one first Hall sensor 1253 a and a second Hall sensor 1253 b and may be located inside or outside the optical driving coil 1251 .

[0160] The moving component may be moved in a third direction (Z-axis direction) by an electromagnetic force formed between the optical driving coil 1251 and the optical driving magnet 1252 .

[0161] The optical drive coil 1251 may include a first coil 1251a and a second coil 1251b. In addition, as described above, the first coil 1251a and the second coil 1251b may be composed of a plurality of sub-coils. The first coil 1251a and the second coil 1251b may be disposed in a hole formed in a side portion of the housing 1230. The first coil 1251a and the second coil 1251b may be electrically connected to the substrate portion 1270. Therefore, the first coil 1251a and the second coil 1251b may receive current, etc., through the substrate portion 1270.

[0162] The optical driving coil 1251 may be coupled to the substrate portion 1270 via a yoke or the like.

[0163] In an embodiment, the optical drive coil 1251 is an element fixed to the base plate portion 1270. In contrast, the optical drive magnet 1252 is a moving element that moves in the optical axis direction (Z-axis direction) together with the first component and the second component.

[0164] The optical driving magnet 1252 may include a first magnet 1252a and a second magnet 1252b.

[0165] In an embodiment, the first coil 1251a may include a first sub-coil SC1a and a second sub-coil SC2a. The first sub-coil SC1a and the second sub-coil SC2a may be sequentially arranged in the optical axis direction. The first sub-coil SC1a may be positioned closer to the first camera actuator than the second sub-coil SC2a.

[0166] The second coil 1251b may include a third sub-coil SC1b and a fourth sub-coil SC2b. The third sub-coil SC1b and the fourth sub-coil SC2b may be sequentially disposed in the optical axis direction. The third sub-coil SC1b may be positioned closer to the first camera actuator than the fourth sub-coil SC2b.

[0167] The first magnet 1252a can face the first sub-coil SC1a and the second sub-coil SC2a. The second magnet 1252b can face the third sub-coil SC1b and the fourth sub-coil SC2b. The first sub-coil SC1a can be positioned to overlap with the third sub-coil SC1b in the second direction. The second sub-coil SC2a can be positioned to overlap with the fourth sub-coil SC2b in the second direction. In this way, the first magnet 1252a and the second magnet 1252b can be arranged to face the two sub-coils in the same manner.

[0168] In addition, the coils of the first driving part and the second driving part in the second camera actuator can be described as including the first sub-coils SC1a and SC1b and the second sub-coils SC2a and SC2b. However, in this specification, the third sub-coil and the fourth sub-coil are used as sub-coils for driving the second lens assembly in an interchangeable manner.

[0169] The first sub-coil SC1a and the second sub-coil SC2a may be spaced apart from each other in the optical axis direction. The first sub-coil SC1a and the second sub-coil SC2a may be connected in parallel to each other. For example, one of one end and the other end of the first sub-coil SC1a may be connected to one of one end and the other end of the second sub-coil SC2a using a node. The other of one end and the other end of the first sub-coil SC1a may be connected to the other of one end and the other end of the second sub-coil SC2a using another node. That is, the current applied to the first sub-coil SC1a and the second sub-coil SC2a may be distributed to each of the sub-coils. Therefore, the first sub-coil SC1a and the second sub-coil SC2a are electrically connected in parallel, and thus heat generation may be reduced.

[0170] In addition, the polarity of a surface of the first drive magnet 1252a facing the first drive coils SC1a and SC2a may be the same as the polarity of a surface of the second drive magnet 1252b facing the second drive coils SC1b and SC2b. For example, the inner surface of the first drive magnet 1252a and the inner surface of the second drive magnet 1252b may have an N pole or an S pole (e.g., an N pole). The outer surface of the first drive magnet 1252a and the outer surface of the second drive magnet 1252b may have the other of the N pole and the S pole (e.g., an S pole). Here, relative to the optical axis, the inner surface may be a side surface adjacent to the optical axis, and the outer surface may be a side surface away from the optical axis. In addition, the first magnet 1252a may have a first magnetic pole on a first surface BSF1 facing the optical drive coil (e.g., the first coil). The first magnet 1252a may have a second magnetic pole on a second surface BSF2 opposite to the first surface BSF1. The second magnet 1252b may have a first magnetic pole on a first surface BSF1 facing the optical drive coil (e.g., the second coil). The second magnet 1252b may have a second magnetic pole on a second surface BSF2 opposite to the first surface BSF1. The first magnetic pole may be one of an N pole and an S pole. The second magnetic pole may be the other of an N pole and an S pole.

[0171] Alternatively, the first driving magnet and the second driving magnet may have a structure in which N pole / S pole or S pole / N pole is arranged in sequence in the optical axis direction.

[0172] In addition, the third sub-coil SC1b and the fourth sub-coil SC2b can be spaced apart from each other in the optical axis direction. The third sub-coil SC1b and the fourth sub-coil SC2b can be connected in parallel to each other. For example, a node can be used to connect one end and one of the other ends of the third sub-coil SC1b to one end and one of the other ends of the fourth sub-coil SC2b.

[0173] The first and second magnets 1252a and 1252b may be disposed in the above-mentioned grooves of the moving assembly 1222 and may be positioned to correspond to the first and second coils 1251a and 1251b. The optical drive magnet 1252 may be coupled to the first and second lens assemblies (or moving assembly) together with the yoke described below.

[0174] The yoke portion 1240 may be disposed on the substrate portion 1270. The yoke portion 1240 may form an attractive force with adjacent magnets to maintain the posture of the first lens assembly and the second lens assembly. That is, the yoke portion 1240 may provide a holding force relative to the moving assembly. The yoke portion 1240 may include a first yoke portion 1241 and a second yoke portion 1242. The first yoke portion 1241 may be disposed on the first substrate 1271. The second yoke portion 1242 may be disposed on the second substrate 1272.

[0175] The base portion 1260 may be located between the lens portion 1220 and the image sensor within the circuit board. Components such as filters may be fixed to the base portion 1260. In addition, the base portion 1260 may be provided to surround the image sensor described above. With this configuration, since the image sensor IS is not affected by foreign matter or the like, the reliability of the element may be improved. However, in some of the following drawings, the base portion is removed and described.

[0176] In addition, the second camera actuator 1200 may be a zoom actuator or an auto focus (AF) actuator. For example, the second camera actuator may support one or more lenses and may move the lenses according to a control signal from a predetermined control part to perform an auto focus function or a zoom function.

[0177] The second camera actuator may perform fixed zoom or continuous zoom. For example, the second camera actuator may move the lens group 1221.

[0178] In addition, the second camera actuator may be composed of a plurality of lens assemblies. For example, in the second camera actuator, in addition to the first lens assembly 1222a and the second lens assembly 1222b, at least one of a third lens assembly (not shown) and a guide pin (not shown) may be provided. The above contents may be applied to this case. Therefore, the second camera actuator may perform a high-magnification zoom function through the driving part.

[0179] The image sensor may be located inside or outside the second camera actuator. In an embodiment, as illustrated, 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 may receive light and may convert the received light into an electrical signal. In addition, the image sensor may be composed of a plurality of pixels in an array form. In addition, the image sensor may be located on an optical axis.

[0180] The substrate portion 1270 may be in contact with a side portion of the housing. For example, the substrate portion 1270 may be located on an outer surface (first side surface) of a first side portion and an outer surface (second side surface) of a second side portion of the housing, particularly a second-second housing, and may be in contact with the first side surface and the second side surface.

[0181] The second camera actuator may further include first stoppers ST1a and ST1b disposed at one end (or front end) of the second camera actuator and second stoppers ST2a and ST2b disposed at the other end (or rear end) of the second camera actuator within the housing (or second-second housing 1232).

[0182] The first stopper ST1 may be located at one end of the housing. For example, the first stopper ST1 may be located at an end portion of the second-second housing or the main barrel 1232 in a direction opposite to the optical axis direction. In an embodiment, the first stopper ST1 may be located on the inner wall of the housing or the main barrel 1232. In the first inner wall and the second inner wall of the main barrel 1232 facing each other in the optical axis direction, the first stopper ST1 may be located on the first inner wall. In addition, the first stopper ST1 may include a first-first stopper ST1a disposed on one side and a first-second stopper ST1b disposed on the other side. For example, the first-first stopper ST1a may be disposed at one side of the first inner wall. The first-second stopper ST1b may be located at the other side of the first inner wall. The first-first stopper ST1a may be positioned adjacent to the first side portion. The first-second stopper ST1b may be positioned adjacent to the second side portion. The one side and the other side may refer to the opposite sides of the one side and the one side in the second direction.

[0183] Alternatively, the first-first stopper ST1a may overlap with the guide portion of the first lens assembly in the optical axis direction. The first-second stopper ST1b may overlap with the lens protrusion portion of the first lens assembly in the optical axis direction.

[0184] In addition, the first stopper ST1 may further include a 1-3 stopper disposed at the other side portion of the main barrel 1232. The 1-3 stopper may be positioned to overlap with the guide portion of the second lens assembly 1222b in the optical axis direction.

[0185] In addition, the second stopper ST2 may be located at the other end of the second-second housing or main barrel 1232. For example, the second stopper ST2 may be located at the end portion of the second-second housing or main barrel 1232 in the optical axis direction. In an embodiment, the second stopper ST2 may be located on the inner wall of the housing or main barrel 1232. In the first inner wall and the second inner wall of the main barrel 1232 facing each other in the optical axis direction, the second stopper ST2 may be located on the second inner wall. The first inner wall may be adjacent to the first camera actuator or the first lens assembly. The second inner wall may be adjacent to the image sensor.

[0186] In addition, the second stopper ST2 may include a second-first stopper ST2a disposed on one side and a second-second stopper ST2b disposed on the other side. The second-first stopper ST2a may be positioned adjacent to the first side portion. The second-second stopper ST2b may be positioned adjacent to the second side portion. For example, the second-first stopper ST2a may be disposed at one side portion of the first inner wall. The second-second stopper ST2b may be disposed at the other side portion of the first inner wall.

[0187] Reference Figure 7 and Figure 8 , the electromagnetic force will be described below based on one coil. In the camera device according to the embodiment, an electromagnetic force DEM1 is generated between the first magnet 1252a and the first coil 1251a, and therefore the first lens assembly 1222a can move along the track located on the inner surface of the shell via the first ball B1 parallel to the optical axis direction, that is, along the third direction (Z-axis direction) or in the opposite direction to the third direction. At this time, the first magnet 1252a and the second magnet 1252b will not move to the area facing the edges of the first sub-coil and the second sub-coil. Therefore, the electromagnetic force is formed based on the flow of current in the area adjacent to the first sub-coil and the second sub-coil.

[0188] As described above, in a camera device according to an embodiment, the first magnet 1252a can be set in the first lens assembly 1222a, for example, by a unipolar magnetization method. For example, in an embodiment, the surface (first surface) facing the outer surface of the first magnet 1252a can be an S pole. The outer surface of the first magnet 1252a can be a surface facing the first coil 1251a. The surface opposite to the first surface can be an N pole. Therefore, only one of the N pole and the S pole can be positioned to face the first coil 1251a. Here, a description is given based on the assumption that the outer surface of the first magnet 1252a is an S pole. In addition, the first coil 1251a is composed of a plurality of sub-coils, and current can flow in opposite directions in the plurality of sub-coils. That is, in the region of the first sub-coil SC1a adjacent to the second sub-coil SC2a, current can flow in the same manner as "DE1".

[0189] In other words, the first region of the first sub-coil SC1a and the second region of the second sub-coil SC2a may have the same current direction. The first region of the first sub-coil SC1a is a region that overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction and is set perpendicular to the optical axis direction (for example, set along the first direction). The second region of the second sub-coil SC2a is a region that overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction and is set perpendicular to the optical axis direction (for example, set along the first direction).

[0190] In addition, as shown in the embodiment, when the magnetic force is applied from the S pole of the first magnet 1252a along the second direction (Y-axis direction) and the current DE1 flows from the first coil 1251a along the first direction (X-axis direction), the electromagnetic force DEM1 can act along the third direction (Z-axis direction) according to the interaction of electromagnetic forces (e.g., Fleming's left-hand rule).

[0191] At this time, since the first coil 1251a is fixed to the side portion of the housing, the first lens assembly 1222a provided with the first magnet 1252a can move in a direction opposite to the Z-axis direction due to the electromagnetic force DEM1 according to the current direction. That is, the optical drive magnet can move in a direction opposite to the direction of the electromagnetic force applied to the optical drive coil. In addition, the direction of the electromagnetic force can change according to the current of the coil and the magnetic force of the magnet.

[0192] Therefore, the first lens assembly 1222a can move in a third direction or in a direction parallel to the optical axis direction (in both directions) via the first ball along the track located on the inner surface of the housing. At this time, the electromagnetic force DEM1 can be controlled to be proportional to the current DE1 applied to the first coil 1251a.

[0193] The first lens assembly 1222a or the second lens assembly 1222b may have a first recess RS1 for the first ball or the second ball to be seated therein. In addition, the first lens assembly 1222a or the second lens assembly 1222b may have a second recess RS2 for the first ball or the second ball to be seated therein. A plurality of first recesses RS1 and second recesses RS2 may be provided. The length of the first recess RS1 in the optical axis direction (Z-axis direction) may be preset. In addition, the length of the second recess RS2 in the optical axis direction (Z-axis direction) may be preset. Therefore, the moving distance of the first ball and the second ball in each recess in the recess along the optical axis direction may be adjusted. In other words, the first recess RS1 or the second recess RS2 may be a stopper for the first ball or the second ball.

[0194] In the camera device according to the embodiment, the second magnet 1252b may be provided in the second lens assembly 1222b, for example, by a single-pole magnetization method.

[0195] In addition, the first coil 1251a is composed of a plurality of sub-coils, and current can flow in opposite directions in the plurality of sub-coils. That is, in the region of the first sub-coil SC1a adjacent to the second sub-coil SC2a, current can flow in the same manner as "DE1".

[0196] In addition, in an embodiment, the N pole or S pole of the second magnet 1252b can be positioned to face the second coil 1251b. In an embodiment, the surface (first surface) facing the outer surface of the second magnet 1252b can be an S pole. In addition, the first surface can be an N pole. The following description is given based on the first surface being an N pole as illustrated.

[0197] In addition, the second coil 1251b is composed of a plurality of sub-coils, and current can flow in opposite directions in the plurality of sub-coils. That is, in the region of the first sub-coil SC1b adjacent to the second sub-coil SC2b, current can flow in the same manner as "DE2".

[0198] In an embodiment, when a magnetic force DM2 is applied from the first surface (N pole) of the second magnet 1252b along a second direction (Y-axis direction) and a current DE2 flows in the second coil 1251b along a first direction (X-axis direction) corresponding to the N pole, the electromagnetic force DEM2 can act along a third direction (Z-axis direction) according to the interaction of electromagnetic forces (e.g., Fleming's left-hand rule).

[0199] At this time, since the second coil 1251b is fixed to the side portion of the housing, the second lens assembly 1222b in which the second magnet 1252b is disposed can move in a direction opposite to the Z-axis direction due to the electromagnetic force DEM2 according to the direction of the current. For example, as described above, the direction of the electromagnetic force can change according to the current in the coil and the magnetic force of the magnet. Therefore, the second lens assembly 1222b can move in a direction parallel to the third direction (Z-axis direction) along the track located on the inner surface of the housing via the second ball B2. At this time, the electromagnetic force DEM2 can be controlled to be proportional to the current DE2 applied to the second coil 1251b.

[0200] Reference Fig. 9In the camera module according to the embodiment, the driving part may provide driving forces F3A, F3B, F4A, and F4B that move the first lens assembly 1222a and the second lens assembly 1222b of the lens part 1220 in the third direction (Z-axis direction). As described above, the driving part may include an optical driving coil 1251 and an optical driving magnet 1252. The lens part 1220 may move in the third direction (Z-axis direction) due to the electromagnetic force formed between the optical driving coil 1251 and the optical driving magnet 1252.

[0201] At this time, the first coil 1251a and the second coil 1251b may be disposed in holes formed in the side portions (e.g., the first side portion and the second side portion) of the housing 1230. The second coil 1251b may be electrically connected to the second substrate 1272. The first coil 1251a may be electrically connected to the first substrate 1271. Therefore, the first coil 1251a and the second coil 1251b may receive a driving signal (e.g., current) from a driving driver on the circuit board of the circuit board 1300 through the substrate portion 1270.

[0202] At this time, the first lens assembly 1222a on which the first magnet 1252a is mounted 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. In addition, the second lens group 1221b mounted on the first lens assembly 1222a can also move along the third direction.

[0203] The second lens assembly 1222b on which the second magnet 1252b is mounted can move along the third direction (Z-axis direction) due to the electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b. In addition, the third lens group 1221c mounted on the second lens assembly 1222b can also move along the third direction.

[0204] Therefore, as described above, the focal length or magnification of the optical system can be changed by the movement of the second lens group 1221b and the third lens group 1221c. In an embodiment, the magnification can be changed by the movement of the second lens group 1221b. In other words, zooming can be achieved. In addition, the focal length can be adjusted by the movement of the third lens group 1221c. In other words, autofocus can be achieved.

[0205] In addition, the first Hall sensor 1253a and the second Hall sensor 1253b may be disposed in at least one of the first sub-coil and the second sub-coil. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may partially overlap in the second direction.

[0206] According to the driving of the first lens assembly, the first lens assembly 1222a can be positioned as close to the first stoppers ST1a and ST1b as possible. At this time, the distance between the guide portion in the first lens assembly 1222a and the first-first stopper ST1a can be reduced. In addition, the distance between the first-second stopper ST1b and the lens protrusion of the first lens assembly can also be reduced.

[0207] That is, when the first lens assembly 1222a moves to the maximum limit toward the first camera actuator, the first lens assembly 1222a may collide with the first-first stopper ST1a and the first-second stopper ST1b. When the first lens assembly moves, the first-first stopper and the first-second stopper may collide with the first lens assembly simultaneously or sequentially. In an embodiment, when the first lens assembly moves, the first-first stopper and the first-second stopper may collide with the first lens assembly simultaneously.

[0208] Therefore, even when a lens made of glass is provided in the first lens assembly 1222a (or the second lens assembly) (for example, at the front end), the collision at the maximum movement position (mechanical position) of the first lens assembly 1222a (or the second lens assembly) can be minimized. That is, the phenomenon of lens breakage can be suppressed. For example, at least one of the first lens assembly and the second lens assembly can include a lens having glass. The glass can be located at the outermost side of the first lens assembly or the second lens assembly.

[0209] As a modification example, in the case of a continuous collision, the impact can be mainly absorbed by the guide portion having a large volume, and thus damage to the first lens assembly can be minimized.

[0210] Similarly, the second stopper ST2b and the second lens assembly 1222b may collide with each other. That is, when the second lens assembly 1222b moves to the maximum limit in the direction of the image sensor or the optical axis direction, the second lens assembly 1222b may collide with the second-second stopper ST2b and the second-first stopper ST2a. Therefore, even when a lens made of glass is provided in the second lens assembly 1222b, the collision at the maximum movement position (mechanical position) of the first lens assembly 1222a can be minimized. That is, the phenomenon of lens cracking can be suppressed. This also applies to the modified example.

[0211] In other words, when the first lens assembly 1222a moves, the first-first stopper ST1a and the first-second stopper ST1b may contact the first lens assembly 1222a. When the first lens assembly 1222a moves to the maximum limit, such as mechanical to mechanical, the first lens assembly 1222a may contact the first stoppers ST1a and ST1b. For example, the first lens assembly 1222a may move to one end in the optical axis direction or one end in the direction opposite to the optical axis direction. At this time, the first lens assembly 1222a may move to a point where it contacts the first stopper or the second stopper. For example, when the first lens assembly 1222a moves, the camera module may be in a telephoto or wide-angle state. When the first lens assembly 1222a contacts the first stopper, the first lens assembly 1222a may be in a wide-angle state, and when the first lens assembly 1222a contacts the second stopper, the first lens assembly 1222a may be in a telephoto state. This can be varied in various ways depending on the drive of the first lens assembly.

[0212] Due to the first stopper, the impact caused by the movement of the first lens assembly 1222a and the second lens assembly 1222b can be reduced. Therefore, as described above, the reliability of the first lens assembly 1222a and the second lens assembly 1222b and the reliability of the second lens group and the third lens group inside can be improved. In addition, the range of movement of the first lens assembly 1222a and the second lens assembly 1222b is limited, and accurate magnification, etc. can be achieved.

[0213] Fig.10 is a perspective view of a configuration of a portion of a second camera actuator according to an embodiment.

[0214] Reference Fig.10 , the first lens assembly 1222a and the second lens assembly 1222b may be spaced apart in the optical axis direction (Z-axis direction).

[0215] The second guide portion may be arranged to face the first guide portion. In an embodiment, the first guide portion and the second guide portion may at least partially overlap in the second direction (Y-axis direction). With this configuration, the space efficiency of the driving portion for moving the first lens assembly and the second lens assembly within the second camera actuator is improved, and the miniaturization of the second camera actuator can be easily achieved.

[0216] The first ball, the first coil, etc. may be disposed adjacent to the first guide portion as described above, and the second ball, the second coil, etc. may be disposed adjacent to the second guide portion as described above.

[0217] In addition, according to an embodiment, the first lens assembly 1222a and the second lens assembly 1222b may include yokes YK1 and YK2 disposed on side surfaces thereof, respectively.

[0218] The first yoke YK1 may be located on the side surface of the first lens assembly 1222a. The second yoke YK2 may be located on the side surface of the second lens assembly 1222b. At least a portion of each of the first yoke YK1 and the second yoke YK2 may extend outward. Therefore, the first yoke YK1 may surround at least a portion of the side surface of the first magnet 1252a. As shown, the first yoke YK1 may be formed into various structures surrounding the inner surface of the first magnet 1252a and a portion of the side surface. For example, the first yoke YK1 may be composed of separate components, and each of the separate components may be located on the inner side and side surface of the first magnet 1252a. Therefore, the binding force between the optical drive magnet and the yoke that is magnetized by a single pole may be improved. Similarly, the second yoke YK2 may surround at least a portion of the side surface of the second magnet 1252b. As shown, the second yoke YK2 may be formed into various structures surrounding the inner surface of the second magnet 1252b and a portion of the side surface. For example, the second yoke YK2 may be composed of separate members, and each of the separate members may be located on the inner surface and the side surface of the second magnet 1252b.

[0219] Additionally, a yoke may be positioned to couple to the optical drive coil and the optical drive magnet.

[0220] A plurality of balls may be positioned on the outer surface of the lens assembly. As described above, a first ball may be positioned on the outer surface of the first lens assembly 1222a. A second ball may be positioned on the outer surface of the second lens assembly 1222b.

[0221] A plurality of first balls and a plurality of second balls may be provided. For example, a plurality of first balls may be provided side by side in a recess of the first lens assembly 1222a along the optical axis direction (Z axis direction). In addition, a plurality of second balls may be provided side by side in a recess of the second lens assembly 1222b along the optical axis direction (Z axis direction).

[0222] For example, the second ball B2 may include a first sub-ball B2a, a second sub-ball B2b, and a third sub-ball B2c. The first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may be arranged side by side along the optical axis. Therefore, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may at least partially overlap each other in the optical axis direction.

[0223] The first sub-ball B2a and the second sub-ball B2b may be located at the edge of the plurality of balls. The third sub-ball B2c may be located between the first sub-ball B2a and the second sub-ball B2b.

[0224] The plurality of balls may have the same or different diameters. For example, at least some of the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have the same diameters R1, R3, and R2. In addition, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have different diameters R1, R3, and R2.

[0225] As an example, the diameters R1 and R3 of the balls (first and second sub-balls) located at the edge may be smaller than the diameter R2 of the ball (third sub-ball) located between the plurality of balls. For example, the diameter R1 of the first sub-ball B2a and the diameter R3 of the second sub-ball B2b may be smaller than the diameter R2 of the third sub-ball B2c. With this configuration, the movement of the lens assembly caused by the plurality of balls can be accurately performed without tilting to one side.

[0226] The description of the plurality of balls may be equally applied to the first ball.

[0227] In addition, as described above, a plurality of optical drive magnets may be provided, and the plurality of optical drive magnets may include a first magnet and a second magnet. The first magnet and the second magnet may be arranged to face each other, wherein the same magnetic pole is arranged on the outer side. That is, each of the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet may have a first magnetic pole. Each of the second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet may have a second magnetic pole.

[0228] Fig.11 is a perspective view of a first lens assembly (or a second lens assembly) according to an embodiment, Fig.12is a front view of a first lens assembly (or a second lens assembly) according to an embodiment, Fig.13 is a side view of a first lens assembly (or a second lens assembly) according to an embodiment, Fig.14 is a rear view of the first lens assembly (or the second lens assembly) according to an embodiment, and Fig.15 is another side view of the first lens assembly (or the second lens assembly) according to an embodiment.

[0229] Fig.16a is a perspective view of a measuring device according to an embodiment, Fig.16b is a side view of a measuring device according to an embodiment, Fig.16c is another side view of the measuring device according to an embodiment, Fig.17a is a stereoscopic view of a measuring ball, a measuring device and a first lens assembly according to an embodiment, Fig.17b yes Fig.17a Side view of Fig.17c yes Fig.17b A partial cross-sectional view of Fig.17d is a diagram for describing a measurement method using a measurement device according to an embodiment, Fig.17e is a diagram illustrating various shapes of a lens assembly according to an embodiment, Figure 17f to Figure 17h is a diagram for describing a method of measuring an inclination angle using a measuring device according to an embodiment, Fig.17i is an enlarged cross-sectional view of a second camera actuator according to an embodiment, Fig.18 is another side view of the first lens assembly (or the second lens assembly) according to an embodiment, Fig.19 It is along Fig.18 The stereogram taken along the line C-C' in Fig. 20 It is along Fig.18 The graph is taken from line C-C' in Fig.21 yes Fig.18 A diagram of a lens group contained therein, Fig. 22 is a diagram of a first lens assembly and a second lens assembly according to an embodiment, and Fig.23 It is along Fig. 22 The figure is taken along line E-E'.

[0230] Reference Fig.11As described above, the first lens assembly 1222a and the second lens assembly 1222a can be moved along the optical axis direction or the third direction (Z-axis direction). The following description will be given based on the first lens assembly 1222a, but the description of the first lens assembly can be equally applied to the second lens assembly 1222a. In addition, the first lens assembly 1222a and the second lens assembly 1222a can be arranged side by side along the optical axis so that the corresponding guide portions of the first lens assembly 1222a and the second lens assembly 1222a are positioned to face each other. For example, the first lens assembly 1222a and the second lens assembly 1222a can be positioned in an opposite or corresponding manner relative to the optical axis.

[0231] At least one of the first lens assembly 1222a and the second lens assembly 1222b may include an accommodating portion (lens holder) LAH1 for accommodating a lens, a guide portion GP, ​​and a lens protruding portion LP. Hereinafter, as described above, a description is given based on the first lens assembly 1222a.

[0232] The accommodating portion or the first lens holder LAH1 has a first lens hole LH1. Hereinafter, the accommodating portion or the first lens holder is described as the accommodating portion LAH1. A lens can be disposed in the first lens hole LH1. That is, the first lens hole LH1 can accommodate a lens. At this time, a plurality of lenses can be provided, and, for example, at least one lens can be made of glass or the like.

[0233] In addition, the guide portion GP may be in contact with the accommodating portion LAH1 and may be provided with a ball portion. As described above, the ball portion may include a first ball and a second ball. In addition, the first ball and the second ball may be positioned or installed in the first lens assembly 1222a and the guide groove. Therefore, when a driving force (e.g., an electromagnetic force) is generated by the driving portion, the first lens assembly 1222a may move along the optical axis direction due to the rolling motion of the first ball and the second ball.

[0234] The lens protrusion portion LP may contact the accommodation portion LAH1 and may correspond to the guide portion GP.

[0235] In an embodiment, the guide portion GP may be located on one side surface or one side portion of the accommodating portion LAH1. The lens protrusion portion LP may be located on the other side surface or the other side portion of the accommodating portion LAH1. For example, the guide portion GP may be located at a side opposite to the lens protrusion portion LP relative to the accommodating portion LAH1.

[0236] In addition, the lens protrusion portion 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 portion of the support portion LP2. The support portion LP2 may be connected to the plate LP1 and may be located at the rear end portion of the plate LP1. Here, the front end portion refers to the end portion in the direction opposite to the optical axis direction, and the rear end portion refers to the end portion in the optical axis direction.

[0237] The height Wa of the plate LP1 may be greater than the height Wb of the support portion LP2. Here, the height corresponds to the length in the first direction (X-axis direction). In addition, the thickness THb of the lens protrusion portion LP or the support portion LP2 may be reduced along the optical axis. Here, the thickness corresponds to the length in the second direction (Y-axis direction). In addition, the length corresponds to the length in the third direction (Z-axis direction). With this structure, removal can be easily performed while maintaining the supporting capacity of the plate LP1. In addition, the supporting force of the first pin groove located in the plate LP1 is improved, and thus the flatness can be easily maintained during removal.

[0238] In addition, the length of the plate LP1 according to the embodiment may be smaller than the length of the support portion LP2. Therefore, the ease of removal and the support capability may be further improved.

[0239] In addition, the guide portion GP according to the embodiment may include a side plate GPa and a wing-shaped portion GPb. The wing-shaped portion GPb may be in contact with both the side plate GPa and the accommodating portion LAH1. The wing-shaped portion GPb may have a thickness THa that decreases along the optical axis direction. In addition, a plurality of wing-shaped portions GPb may be provided. With this configuration, removal can be easily performed while maintaining the supporting capacity of the side plate GPa. In addition, the supporting capacity of the second pin groove located in the side plate GPa is improved, and thus the flatness can be easily maintained during removal.

[0240] In addition, a retainer RT1 may be positioned on the first outer surface MM1 of the first lens assembly 1222a. The first lens assembly and the second lens assembly may have retainers located on the outer surfaces (the first outer surface and the second outer surface) facing each other. The retainer RT1 may be coupled to the first outer surface MM1 by a protrusion structure / groove structure. In addition, an adhesive material including epoxy resin or the like may be applied to the first outer surface MM1. Thus, the bonding strength between the first outer surface MM1 and the retainer RT1 may be improved. The retainer RT1 may prevent the lens located in the first lens hole LH1 from falling off. In addition, a plurality of grooves or protrusions may be formed on the first outer surface MM1. In addition, a plurality of marks (e.g., grooves) may be positioned on the side surface of the first lens assembly 1222a along the first direction. The positions of the first lens assembly and the second lens assembly may be identified by marks, and the identification may be used to perform an inspection of the driving of the first lens assembly and the second lens assembly.

[0241] Reference Figure 12 to Figure 14 In an embodiment, the lens protrusion portion LP may have a first pin groove LPG provided in 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 divides the upper surface LPU of the plate LP1 into equal parts along the first direction (X-axis direction). In addition, the center LPM of the first pin groove LPG may be located on a line that divides the upper surface LPU of the plate LP1 into equal parts along the first direction (X-axis direction). The first pin groove LPG may have various shapes such as a circular or block shape. For example, the shape of the first pin groove LPG may correspond to the shape of the top pin.

[0242] The first pin groove LPG can overlap with the support portion LP2 in the optical axis direction or the third direction (Z axis direction). With this configuration, even when a force is applied to the side of the first pin groove LPG in close contact with the ejector pin for removal by the ejector pin, the flatness of the first lens assembly can be maintained.

[0243] In addition, the guide portion GP may include a second pin groove GPG provided in the upper surface GPU of the guide portion GP. A plurality of second pin grooves GPG may be provided. For example, the second pin groove GPG may include a second-first pin groove GPG1, a second-second pin groove GPG2, and a second-third pin groove GPG3. The second-third pin groove GPG3 may be located between the second-first pin groove GPG1 and the second-second pin groove GPG2. In addition, the second-first pin groove GPG1, the second-second pin groove GPG2, and the second-third pin groove GPG3 may overlap each other in the first direction (X-axis direction).

[0244] The plurality of second pin grooves GPG may all have the same separation distances Wc and Wd from adjacent second pin grooves. Therefore, the force applied to the second pin grooves GPG is uniformly applied to the guide portion, and thus, bending of the guide portion may be suppressed.

[0245] In addition, according to an embodiment, a length Lb of the guide portion GP in the third direction may be greater than a length La of the lens protrusion portion LP in the third direction. Conversely, a length La of the lens protrusion portion LP may be less than a length Lb of the guide portion GP.

[0246] In addition, 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. In addition, the lower surface GPB of the guide portion GP may be located at the rear end of the lower surface LPB of the lens protrusion portion LP. 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, in both the first direction and the third direction, the guide portion GP may have a greater length than the lens protrusion portion LP.

[0247] Corresponding to the 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 this configuration, the straightness or flatness of the guide portion GP may be maintained even when a force is applied to the plurality of second pin grooves GPG by a top pin. Therefore, the guide portion or the first lens assembly may be accurately moved in the Z-axis direction by the ball portion located in the recess of the guide portion GP. In other words, zooming or autofocusing may be performed along the optical axis to suppress the occurrence of misalignment of the optical axis.

[0248] In addition, the first pin groove LPG and the second pin groove GPG may overlap at least partially. For example, the first pin groove LPG and the second pin groove GPG may overlap each other 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.

[0249] In addition, the first pin groove LPG may be located at the rear end portion of the second pin groove GPG. Therefore, even when force is applied to the lens protrusion portion LP and the guide portion GP, ​​bending caused by a difference in shape or size may be suppressed.

[0250] In addition, the wing-shaped portion GPb may overlap with the second pin groove GPG in the optical axis direction (Z-axis direction). For example, a plurality of wing-shaped portions GPb may overlap with the second pin groove GPG in the optical axis direction. With this configuration, even in the case where a force is applied to the side of the second pin groove in close contact with the ejector pin for removal by an ejector pin, the flatness of the first lens assembly, in particular, the flatness of the guide portion GP provided with the ball bearings, can be maintained.

[0251] In addition, the centers of the plurality of second pin grooves (e.g., the centers of the second-third pin grooves) and the center LPM of the first pin groove LPG may be located on a virtual line parallel to the second direction (Y-axis direction). Therefore, the phenomenon that the guide portion GP is bent to the upper side or the lower side due to the force applied to the ejector pin during removal may be suppressed.

[0252] Further references Fig.15 According to the embodiment, the side plate GPa of the guide portion GP has a first area A1, a second area A2, and a third area A3.

[0253] The third area A3 is located between the first area A1 and the second area A2. The first area A1, the third area A3, and the second area A2 may be sequentially positioned in a direction opposite to the first direction.

[0254] The first area A1 may include a first recess RS1. The second area A2 may include a second recess RS2. The first and second balls may be installed in the first and second recesses RS1 and RS2, respectively.

[0255] In addition, a drive yoke may be provided in the third area A3. The first magnet may be mounted on the drive yoke. The drive yoke may be installed in the third area A3 and may be connected to the guide portion GP. To this end, a yoke hole A3h or a coupling protrusion A3p may also be provided in the third area A3. The side plate GPa and the drive yoke may be connected to each other through the yoke hole A3h or the coupling protrusion A3p. Additionally, an adhesive material (e.g., epoxy resin, etc.) may be additionally applied to the third area A3.

[0256] Reference Figures 16a to 16c as well as Figure 17a to Figure 17b , the measuring device 3000 according to the embodiment may include a body 3100 , a first protruding portion 3200 , and a second protruding portion 330 .

[0257] The body 3100 may be formed to extend in one direction. The body 3100 may extend to have a length longer than the length of the lens assembly in the second camera actuator in the optical axis direction. In addition, the body 3100 may include a track portion 3100r formed on one surface thereof. A ball TB for measuring may be mounted on the track portion 3100r. The ball TB may contact the first lens assembly and the second lens assembly of the second camera actuator for measuring (hereinafter, described based on the first lens assembly 1222a or the lens assembly 1222a). For example, the ball TB may be located between the first lens assembly and the second lens assembly and the body 3100.

[0258] The track portion 3100r may include a first track 3100r1 and a second track 3100r2. The first track 3100r1 and the second track 3100r2 may be disposed to be spaced apart from each other. In addition, the first track 3100r1 and the second track 3100r2 may be positioned to correspond to the first recess and the second recess of the lens assembly 1222a. The spacing between the first track 3100r1 and the second track 3100r2 may correspond to the spacing between the first recess and the second recess.

[0259] In addition, the first track 3100r1 and the second track 3100r2 may be grooves of various types. For example, the first track 3100r1 and the second track 3100r2 may be grooves of the same shape. Alternatively, the first track 3100r1 and the second track 3100r2 may be grooves of different shapes. For example, both the first track 3100r1 and the second track 3100r2 may be "V"-shaped grooves. Alternatively, the first track 3100r1 may have a "V" shape, and the second track 3100r2 may have a hemispherical shape. In addition, the first track 3100r1 and the second track 3100r2 may have a plurality of contact points in contact with the ball TB. Therefore, the first track 3100r1 and the second track 3100r2 may have the same number of contact points in contact with the ball TB. Alternatively, the first track 3100r1 and the second track 3100r2 may have different numbers of contact points in contact with the ball TB.

[0260] In this manner, in the body 3100 according to the embodiment, the first rail 3100r1 and the second rail 3100r2 may be formed as grooves having the same or different structural shapes at the contact points with the ball TB.

[0261] The first protrusion portion 3200 may have a structure extending outward from one surface of the body 3100. The first protrusion portion 3200 may be a region extending from the body 3100 in a vertical direction.

[0262] The second protrusion portion 3200 may have a structure extending outward from the other surface of the body 3100. The second protrusion portion 3200 may be a region extending from the body 3100 in a vertical direction.

[0263] The first protrusion portion 3100 and the second protrusion portion 3200 may extend in opposite directions. Therefore, the first protrusion portion 3100 and the second protrusion portion 3200 may at least partially overlap each other in the extending direction.

[0264] The second protrusion portion 3200 may be located in a region between the rail portions 3100r. For example, the second protrusion portion 3200 may be located in a region between the first rail 3100r1 and the second rail 3100r2.

[0265] In addition, the second protrusion 3200 may also be located on the same surface (another surface) of the body 3100 as the surface on which the track portion 3100r is provided. That is, the second protrusion 3200 may support the lens assembly 1222a as a measurement target. As described above, the ball TB is installed in the first recess and the second recess of the lens assembly and can move along the track portion 3100r. Therefore, the guide portion of the lens assembly may be arranged to face the other surface of the body 3100. At this time, since the second protrusion 3200 and the body 3100 are arranged perpendicular to each other, the bending of the lens assembly can be measured more accurately.

[0266] In addition, the body 3100 may include at least one hole 3100h. The lens assembly mounted on another surface of the body 3100 may be pressed toward the body 3100 through the at least one hole 3100h. That is, during measurement of bending of the lens assembly, the bonding strength between the lens assembly and the measuring device may be maintained.

[0267] Reference Figure 17c to Figure 17h In the first lens assembly 1222a according to the embodiment, the lens may be disposed in the lens hole, and the lens hole may have an operation for accommodating the lens. The measuring method according to the embodiment may include an operation of arranging the first lens assembly in a measuring device, an operation of calculating a central axis of the lens hole of the first lens assembly, and an operation of calculating an inclination angle of each axis of the first lens assembly based on the calculated central axis of the lens hole.

[0268] First, the first lens assembly can be set in the measuring device. As described above, the first lens assembly 1222a can be set on the second protruding portion 3300 to support the end portion of the guide portion. The measurement target is the lens assembly (the first lens assembly and the second lens assembly). In addition, the ball disposed in the track portion can contact the guide portion of the first lens assembly 1222a.

[0269] The central axis of the lens hole of the first lens assembly can be calculated. At this time, the central axis of the lens hole can be calculated by a contact method or a non-contact method. For example, in the case of a non-contact method, the central axis of the lens hole can be calculated by visual recognition, etc. For example, the center points PO1 and PO2 can be calculated based on the inner surface of the lens hole or the outer diameter of a member (e.g., a lens) to be accommodated in the lens hole. For example, the center point can correspond to the center point of each circular lens or the center point of the circular lens hole.

[0270] In an embodiment, the center points of the two lenses or the center points of the inner diameters of the two lens holes may be calculated. For example, the first point PO1 and the second point PO2 may be calculated.

[0271] Further references Fig.17d , the first point PO1 may correspond to the center of the first accommodating lens PL1, and the second point PO2 may correspond to the center of the second accommodating lens PL2.

[0272] The central axis (eg, optical axis or axis) of the lens hole can be calculated by the first point PO1 and the second point PO2. Figure 17c to Figure 17h In , the axes are described as x, y, and z. Figure 17c to Figure 17h As described above, the x-axis may correspond to a direction opposite to the second direction (Y-axis direction) (or the second direction), the y-axis may correspond to the first direction (X-axis direction or the direction opposite to the first direction), and the z-axis may correspond to a direction opposite to the third direction (Z-axis direction) (or the third direction).

[0273] The first point PO1 and the second point PO2 can be calculated by selecting each measurement point of the lens hole by visual recognition. For example, the first point PO1 can be calculated by inputting an edge (e.g., a point or a reference coordinate) at the upper portion of the inner surface of the lens hole. The second point PO2 can be calculated by inputting an edge (e.g., a point or a reference coordinate) at the lower portion of the inner surface of the lens hole.

[0274] Therefore, the first point PO1 and the second point PO2 can be calculated as coordinates in a three-dimensional space (eg, x1, y1, z1, etc.) The first point PO1 and the second point PO2 can be used to calculate the central axis (eg, optical axis or axis) of the lens hole.

[0275] As in Fig.17e In the case of (A), the upper surface LAHus of the accommodating portion in the first lens assembly 1222a can be perpendicular to the outer surface GPs of the guide portion. In this case, the optical axis of the lens hole of the accommodating portion can be parallel to the optical axis direction described above.

[0276] On the contrary, due to the asymmetric structure of the first lens assembly 1222a, the lens hole of the first lens assembly 1222a may be deformed to one side. Therefore, in the case of (B), the upper surface LAHus of the accommodating portion in the first lens assembly 1222a may not be perpendicular to the outer surface GPs of the guide portion. As shown in the figure, in the case of (A), θy may be 90 degrees, but in the case of (B), θy may not be 90 degrees.

[0277] The tilt or inclination of the first lens assembly 1222a caused by the deformation of the first lens assembly 1222a relative to x, y and z can be calculated. As described below, by adjusting the length of the adjustment member for the tilt of the first lens assembly, the axis (central axis or optical axis) of the lens within the lens aperture can be set parallel to the third direction.

[0278] That is, the inclination angle of each axis of the first lens assembly can be calculated based on the calculated central axis of the lens hole.

[0279] As in Figure 17f to Figure 17h In the example, the inclination angle of each axis relative to the xy plane, the yz plane, and the zx plane can be calculated by setting the position of each of the x-axis, the y-axis, and the z-axis to "0".

[0280] For example, the plane tangent to the ball may be a plane of x = 0. In addition, as described above, a virtual line connecting the first point and the second point which are centers (center points) of two lenses (first accommodating lens and second accommodating lens) may be the optical axis.

[0281] The optical axis may satisfy the following Equation 1 for x, y, and z.

[0282] [Equation 1]

[0283]

[0284] Here, a, b and c are measurable constant values ​​that can be calculated using the first point and the second point. In an embodiment, a, b and c can be calculated by applying the value of the second point PO2.

[0285] That is, a, b, and c that satisfy this condition can be obtained by Equation 2.

[0286] In other words, the equation of the straight line passing through the two points as the first point and the second point can correspond to the optical axis of the lens hole. The equation of the optical axis can be derived through the first point and the second point, and a, b and c described above can also be calculated.

[0287] [Equation 2]

[0288]

[0289] Furthermore, in Equations 1 and 2, the first point PO1 may be (x3, y3, and z3), and the second point PO2 may be (x4, y4, and z4).

[0290] Furthermore, after a, b, and c are calculated (after the equation for the optical axis is calculated), equation 1 can use x4, y4, and z4 to replace x3, y3, and z3 of equation 1. Furthermore, other coordinates on the optical axis can also be used to replace x3, y3, and z3 of equation 1.

[0291] First, as in Figure 17g In the example, θy can be calculated by projecting the plane with y=0. That is, by removing the y component, the inclination of the straight line (optical axis) can be calculated by projecting the straight line (optical axis) onto the xz plane with y=0 as a reference. At this time, each of the angles θx, θy and θz refers to a rotation angle or an inclination angle relative to each of the x-axis, y-axis and z-axis. For example, the angle θx refers to a rotation angle or an inclination angle of the first lens assembly relative to the x-axis. In other words, θz refers to an inclination angle of the first lens assembly or the lens hole relative to the z-axis. θy refers to an inclination angle relative to the y-axis. In addition, θx refers to an inclination angle relative to the x-axis.

[0292] Next, Equation 3 is derived by substituting y=0 into Equation 1, and finally, θy can be calculated by Equation 4 as in Equation 6.

[0293] [Equation 3]

[0294]

[0295] [Equation 4]

[0296]

[0297] [Equation 5]

[0298]

[0299] Similarly, as in Fig.17f θz can be calculated by projecting onto the plane with z=0.

[0300] For example, when z=0 is substituted into Equation 1, Equation 6 may be derived, and finally, θz may be calculated as in Equation 7.

[0301] [Equation 6]

[0302]

[0303] [Equation 7]

[0304]

[0305] Similarly, as in Figure 17h θx can be calculated by projecting onto the plane where x=0.

[0306] For example, Equation 8 is derived by substituting x=0 into Equation 1, and finally, θx can be calculated as in Equation 9.

[0307] [Equation 8]

[0308]

[0309] [Equation 9]

[0310]

[0311] In addition, the first lens assembly according to the embodiment is yz symmetrical with respect to the x-axis, the y-axis and the z-axis, and thus the deformation with respect to the yz plane can be reduced. That is, when reflecting the asymmetric structure, the first lens assembly (or lens hole) according to the embodiment is more likely to be tilted in the second direction (y-axis direction).

[0312] Further references Fig.17i In an embodiment, in the first lens assembly 1222a, the upper surface LAHus of the accommodating portion may not be aligned with the outer surface GPs of the guiding portion. In the first lens assembly 1222a, the upper surface LAHus of the accommodating portion may not be perpendicular to the outer surface GPs of the guiding portion.

[0313] In addition, the upper surface LAHus of the accommodation portion LAH and the outer surface GPs of the guide portion GP adjacent to the ball bearing portion may not be aligned and may form a first angle θ A .

[0314] The upper surface LAHus of the accommodating portion and the plane perpendicular to the axis AX1 of the lens group 1221b disposed in the lens hole may not be aligned. In addition, the upper surface LAHus of the accommodating portion and the plane perpendicular to the axis AX1 of the lens group 1221b disposed in the lens hole may form a second angle θ B .

[0315] The first angle θ A and the second angle θ B The first angle θ may correspond in size. A and the second angle θ B can be similar to each other and can have an error range of less than 10%.

[0316] In addition, the axis AX1 of the lens group 1221b can be parallel to the optical axis direction (Z axis direction). This is because the lens group is tilted in a direction to compensate for the axis of the lens hole by the adjustment member described below. In other words, the axis of the lens hole can be misaligned with the axis AX1 of the lens group.

[0317] In addition, the upper surface LAHus of the accommodating portion may have a first end portion EP1 located on one side and a second end portion EP2 located on the other side in a direction perpendicular to the optical axis direction (eg, the second direction (Y-axis direction)).

[0318] The upper surface of the lens group 1221b may have a third end portion EP3 located on one side and a fourth end portion EP4 located on the other side in a direction perpendicular to the optical axis direction (eg, the second direction (Y-axis direction)).

[0319] The separation distance gap1 between the first end portion EP1 and the second end portion EP2 in the optical axis direction (Z-axis direction) may be greater than the separation distance gap2 between the third end portion EP3 and the fourth end portion EP4 in the optical axis direction. The third end portion EP3 and the fourth end portion EP4 may at least partially overlap each other in the second direction. Therefore, the separation distance between the third end portion EP3 and the fourth end portion EP4 in the optical axis direction may be zero or very small.

[0320] Furthermore, the first end portion EP1 may be located in front of the second end portion EP2. For example, the first end portion EP1 may be located closer to the first camera actuator than the second end portion EP2. Furthermore, the second end portion EP2 may be located closer to the image sensor than the first end portion EP1.

[0321] The third end portion EP3 and the fourth end portion EP4 may have the same separation distance from the image sensor.

[0322] In addition, a separation distance gap3 between the upper surface LAHus of the accommodating portion and the first end portion EP1 in the optical axis direction (Z axis direction) may be greater than a separation distance gap4 between the upper surface LAHus of the accommodating portion and the second end portion EP2 in the optical axis direction (Z axis direction).

[0323] Further references Figures 18 to 20 , the first lens assembly 1222a may further include a plurality of adjusting members. In an implementation, the first lens assembly 1222a may include a first adjusting member DT1, a second adjusting member DT2, and a third adjusting member DT3.

[0324] A plurality of adjustment members DT1 to DT3 may be disposed on the bottom surface BS1 of the accommodating portion LAH1. In addition, the plurality of adjustment members DT1 to DT3 may extend from the bottom surface BS1 of the accommodating portion LAH1 toward the lens received in the accommodating portion. Alternatively, the plurality of adjustment members DT1 to DT3 may be located between a lens group (e.g., a second lens group) within the accommodating portion LAH1 and the bottom surface BS1. In an embodiment, the plurality of adjustment members DT1 to DT3 may be protrusions disposed or formed on the bottom surface BS1 of the accommodating portion LAH1. The plurality of adjustment members DT1 to DT3 may be disposed to be spaced apart from each other.

[0325] For example, the first regulating member DT1 may extend from the bottom surface BS1 of the accommodating portion LAH1 toward the second lens group Alternatively, the first regulating member DT1 may extend in the optical axis direction.

[0326] In an embodiment, the first adjustment member DT1 may be located on a first virtual line VL1 of the first lens assembly 1222a in a first direction (X-axis direction) perpendicular to the optical axis direction (Z-axis direction). That is, the first virtual line VL1 may be a line that bisects the length of the first lens assembly 1222a in the second direction. The first virtual line VL1 may be parallel to the second direction.

[0327] In an embodiment, the first adjustment member DT1 may be located at the center of the length of the first lens assembly 1222a in the second direction. The first adjustment member DT1 may be located on the first virtual line VL1. With this configuration, since the first lens assembly 1222a has a structure that is asymmetric to the left or right relative to the center, even when the guide portion is bent to one side during removal, the optical axis or center of the first lens assembly 1222a can be compensated. That is, the first lens assembly 1222a may have a structure that is asymmetric relative to the second virtual line VL2 and a structure that is symmetric relative to the first virtual line VL1. The first lens assembly 1222a may shrink on the right side of the second virtual line VL2 (e.g., the guide portion side). Therefore, degradation of optical performance may be suppressed. In particular, when the first lens assembly 1222a moves along the optical axis via the ball portion, the optical axis may be more significantly deformed according to the asymmetric structure. According to an embodiment, the camera actuator and the first lens assembly may compensate for the distortion of the optical axis caused by the bending structure according to such an asymmetric structure. The second virtual line VL2 described above may be a bisector of the length of the accommodating portion LAH1 in the second direction (Y-axis direction).

[0328] In an embodiment, due to the asymmetric structure described above, the concentricity of the first lens assembly 1222a can be increased. Therefore, the concentricity of the lens can be compensated by the adjustment member based on the amount of distortion caused by the asymmetric structure.

[0329] In addition, the first regulating member DT1 may be disposed to be spaced apart from the second regulating member DT2. In addition, the first regulating member DT1 and the second regulating member DT2 may be disposed to be spaced apart from the third regulating member DT3.

[0330] Unlike the first regulating member DT1 , the second regulating member DT2 and the third regulating member DT3 may not be disposed on the first virtual line VL1 . That is, unlike the first regulating member DT1 , the second regulating member DT2 and the third regulating member DT3 may be disposed not aligned with the first virtual line VL1 .

[0331] Therefore, the second adjusting member DT2 and the third adjusting member DT3 can compensate for the bending of the first lens assembly 1222a in the first and third directions, but not in the second direction (Y-axis direction). In addition, the offset compensated by the bending of the first adjusting member DT1 can be minimized.

[0332] In an embodiment, the plurality of adjustment members DT1 to DT3 may have the same or different lengths in the optical axis direction. In particular, the lengths of the first adjustment member DT1 and the second adjustment member (or the third adjustment member) in the optical axis direction may be different from each other.

[0333] For example, the length HE1 of the first regulating member DT1 in the optical axis direction may be greater than the length HE2 of the second regulating member DT2 in the optical axis direction.

[0334] In particular, the first adjusting member DT1 may be positioned adjacent to the lens protruding portion LP. The first adjusting member DT1 may be positioned closer to the lens protruding portion LP than the second adjusting member or the third adjusting member. The second adjusting member DT2 (or the third adjusting member) may be positioned closer to the guide portion GP than the first adjusting member. Alternatively, the first adjusting member DT1 may be positioned adjacent to a side portion of the housing. For example, the first adjusting member DT1 may be positioned adjacent to the second side portion of the housing. The guide portion GP may be positioned adjacent to the first side portion. In addition, the first adjusting member DT1 may be located on a side portion opposite to the side portion on which the ball portion is provided. Alternatively, the first adjusting member DT1 may be located on a side portion opposite to the first driving portion.

[0335] In an embodiment, among the adjustment members, the first adjustment member DT1 that is closer to the lens protrusion LP than to the guide portion GP may have a longer length in the optical axis direction compared to other adjustment members. In other words, in the first lens assembly 1222a, the first adjustment member DT1 that is adjacent to the lens protrusion LP that is relatively smaller in volume and weight (compared to the guide member) rather than to the guide portion GP that is larger in volume and weight may have a longer length in the optical axis direction compared to other adjustment members. With this configuration, even when the accommodating portion LAH1 and the lens protrusion LP are bent toward the guide portion GP according to the guide portion GP, ​​the center of the second lens group may be aligned by the extension structure of the first adjustment member DT1. That is, the center of the lens group may be compensated according to the bending structure.

[0336] Further references Fig.21 In the accommodating portion LAH1 of the first lens assembly 1222a according to the embodiment, a first accommodating lens PL1 and a second accommodating lens PL2 arranged in sequence in the optical axis direction (Z axis direction) may be positioned. In addition, the second lens group 1221b may further include lenses other than the first accommodating lens PL1 and the second accommodating lens PL2.

[0337] In an embodiment, the first receiving lens PL1 may include a first lens outer surface M1 adjacent to the lens protrusion portion LP and a second lens outer surface M2 adjacent to the guide portion GP.

[0338] The second receiving lens PL2 may include a third lens outer surface M3 adjacent to the lens protrusion portion LP and a fourth lens outer surface M4 adjacent to the guide portion GP.

[0339] The first lens outer surface M1 and the second lens outer surface M2 may partially overlap each other in the second direction. In addition, the first lens outer surface M1 and the second lens outer surface M2 may not at least partially overlap each other in the optical axis direction. In an embodiment, the first lens outer surface M1 may have an area NOV1 in which the first lens outer surface M1 is not aligned with the second lens outer surface M2 in the second direction.

[0340] In addition, the third lens outer surface M3 and the fourth lens outer surface M4 may partially overlap each other in the second direction. In addition, the third lens outer surface M3 and the fourth lens outer surface M4 may not at least partially overlap in the second direction. In an embodiment, the third lens outer surface M3 may have an area NOV2 in which the third lens outer surface M3 is not aligned with the fourth lens outer surface M4 in the second direction.

[0341] In addition, the maximum separation distance from the center of the accommodating portion LAH1 to each of the first lens outer surface M1 and the second lens outer surface M2 may be different based on the center of the accommodating portion LAH1. For example, the maximum separation distance from the center of the accommodating portion LAH1 to the first lens outer surface M1 may be different from the maximum separation distance from the center of the accommodating portion LAH1 to the second lens outer surface M2. In an embodiment, since the length of the first adjustment member DT1 is greater than the lengths of the other adjustment members, the maximum separation distance from the center of the accommodating portion LAH1 to the first lens outer surface M1 may be less than the maximum separation distance from the center of the accommodating portion LAH1 to the second lens outer surface M2.

[0342] Similarly, the maximum separation distance from the center of the accommodating unit LAH1 to each of the third lens outer surface M3 and the fourth lens outer surface M4 may be different based on the center of the accommodating unit LAH1. For example, the maximum separation distance from the center of the accommodating unit LAH1 to the third lens outer surface M3 may be different from the maximum separation distance from the center of the accommodating unit LAH1 to the fourth lens outer surface M4. In an embodiment, since the length of the first adjustment member DT1 is greater than the lengths of the other adjustment members, the maximum separation distance from the center of the accommodating portion LAH1 to the third lens outer surface M3 may be less than the maximum separation distance from the center of the accommodating portion LAH1 to the fourth lens outer surface M4.

[0343] Reference Fig. 22 and Fig.23 , the description of the first lens assembly and the second lens group described above can be equally applied to the second lens assembly and the third lens group. Hereinafter, as shown in the figure, the guide portion of the second lens assembly 1222b is referred to as GP', the lens protrusion portion of the second lens assembly 1222b is referred to as LP', and the accommodating portion of the second lens assembly 1222b is referred to as LAH1'. In addition, the first adjustment member provided on the bottom surface of the accommodating portion LAH1' of the second lens assembly 1222b is referred to as DT1'.

[0344] More specifically, the guide portion GP of the first lens assembly 1222a can be positioned to face the guide portion GP' of the second lens assembly 1222b. For example, the guide portion GP of the first lens assembly 1222a can be positioned adjacent to the first side portion of the housing. That is, the distance between the guide portion GP of the first lens assembly 1222a and the first side portion of the housing can be less than the distance from the second side portion of the housing.

[0345] In contrast, the guide portion GP' of the second lens assembly 1222b may be positioned adjacent to the second side portion of the housing. That is, the guide portion GP' of the second lens assembly 1222b may be located closer to the second side portion of the housing than to the first side portion of the housing.

[0346] In addition, the lens protrusion portion LP of the first lens assembly 1222a can be positioned to face the lens protrusion portion LP' of the second lens assembly 1222b. The lens protrusion portion LP of the first lens assembly 1222a can be positioned adjacent to the second side portion of the housing. And, the lens protrusion portion LP' of the second lens assembly 1222b can be positioned adjacent to the first side portion of the housing.

[0347] The first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b can be positioned to be misaligned with each other. For example, the first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b can be arranged to be misaligned with each other in the optical axis direction (Z-axis direction). In addition, the first adjustment member DT1 of the first lens assembly 1222a can be positioned closer to the second side portion than the first adjustment member DT1' of the second lens assembly 1222b.

[0348] The first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b may extend in opposite directions. Both the first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b may extend in the optical axis direction. In an embodiment, the first adjustment member DT1 of the first lens assembly 1222a may extend from the bottom surface of the accommodating portion LAH toward the first camera actuator or the second-first housing. Alternatively, the first adjustment member DT1' of the second lens assembly 1222b may extend from the bottom surface of the accommodating portion LAH' toward the image sensor or the base. In addition, the separation distance between the bottom surface of the accommodating portion of the first lens assembly 1222a and the bottom surface of the accommodating portion of the second lens assembly 1222b may be less than the distance between the first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b. In contrast, a distance between the first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b may be greater than a distance between bottom surfaces of the receiving portion of the first lens assembly 1222a and the second lens assembly 1222b.

[0349] For example, the first adjustment member DT1 of the first lens assembly 1222a may be positioned adjacent to the lens protrusion portion LP of the first lens assembly 1222a. In addition, the first adjustment member DT1 of the first lens assembly 1222a may be positioned closer to the guide portion GP' than the lens protrusion portion LP' of the second lens assembly 1222b.

[0350] The first adjustment member DT1' of the second lens assembly 1222b may be positioned adjacent to the lens protrusion portion LP of the second lens assembly 1222b. In addition, the first adjustment member DT1' of the second lens assembly 1222b may be positioned closer to the guide portion GP than the lens protrusion portion LP of the first lens assembly 1222a.

[0351] In addition, the first adjustment member DT1 of the first lens assembly 1222a can be positioned adjacent to one side portion of the housing. The first adjustment member DT1' of the second lens assembly 1222b can be positioned adjacent to another side portion of the housing. For example, the first adjustment member DT1 of the first lens assembly 1222a can be positioned adjacent to the second side portion of the housing. The first adjustment member DT1' of the second lens assembly 1222b can be positioned adjacent to the first side portion of the housing.

[0352] The guide portion GP of the first lens assembly 1222a may be positioned adjacent to the first side portion. The guide portion GP' of the second lens assembly 1222b may be positioned adjacent to the second side portion.

[0353] In addition, the first adjustment member DT1 of the first lens assembly 1222a can be located on the side portion opposite to the side portion provided with the ball portion in contact with or connected to the first lens assembly 1222a. The first adjustment member DT1' of the second lens assembly 1222b can be located on the side portion opposite to the side portion provided with the ball portion in contact with or connected to the second lens assembly 1222b.

[0354] For example, the first adjustment member DT1 of the first lens assembly 1222a may be positioned closer to the second ball than to the first ball. The first adjustment member DT1' of the second lens assembly 1222b may be positioned closer to the first ball than to the second ball.

[0355] In addition, the first adjusting member DT1 of the first lens assembly 1222a may be located on a side portion opposite to the first driving portion. The first adjusting member DT1' of the second lens assembly 1222b may be located on a side portion opposite to the second driving portion.

[0356] For example, the first adjusting member DT1 of the first lens assembly 1222a may be positioned closer to the first driving portion than the second driving portion. The first adjusting member DT1' of the second lens assembly 1222b may be positioned closer to the second driving portion than the first driving portion.

[0357] In this way, each of the first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b can be positioned closer to the lens protrusion than to the guide member in each of the lens assemblies. With this configuration, it is possible to compensate for an optical error generated due to each of the lens assemblies having an asymmetric structure. That is, the camera actuator according to the embodiment can perform optical compensation according to the asymmetric structure. That is, the camera actuator according to the embodiment can perform optical compensation according to the asymmetric structure.

[0358] Fig.24 is a cross-sectional view of a second camera actuator according to an embodiment, and Fig.25 yes Fig. 22 Magnified view of portion P in FIG.

[0359] Reference Fig.24 and Fig.25 In the second camera actuator, 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. In addition, the first yoke YK1 may be positioned adjacent to the first magnet 1252a. The second yoke YK2 may be positioned adjacent to the second magnet 1252b.

[0360] In addition, the first magnet 1252a and the second magnet may include a first magnetic pole region (N pole or S pole), a second magnetic pole region (S pole or N pole), and neutral regions NA1 and NA2. Neutral regions NA1 and NA2 may be disposed between the first magnetic pole region and the second magnetic pole region. In addition, in the first magnet 1252a, the first magnetic pole region, the neutral region, and the second magnetic pole region may be disposed in sequence along the optical axis direction. Similarly, in the second magnet 1252b, the first magnetic pole region, the neutral region, and the second magnetic pole region may be disposed in sequence along the optical axis direction. In addition, in the first magnet 1252a and the second magnet 1252b, the first magnetic pole region may be an N pole. In the first magnet 1252a and the second magnet 1252b, the second magnetic pole region may be an S pole. The opposite is also possible.

[0361] In an embodiment, when the first lens assembly 1222a is adjacent to the image sensor or moves to the maximum limit in the third direction (Z-axis direction), the first lens assembly 1222a can provide a minimum magnification. When the first lens assembly 1222a is moved to the maximum limit toward the first camera actuator or in the direction opposite to the third direction, the first lens assembly 1222a can provide a maximum magnification. At this minimum or maximum magnification, the second lens assembly can be present at various positions for autofocus.

[0362] First, the second camera actuator may further include first stoppers ST1a and ST1b at one end or the front end within the second housing (or second-second housing 1232) and second stoppers ST2a and ST2b at the other end of the second camera actuator.

[0363] The first stopper may include a first-first stopper ST1a disposed on one side and a first-second stopper ST1b disposed on the other side. The second stopper may include a second-first stopper ST2a disposed on one side and a second-second stopper ST2b disposed on the other side. The one side and the other side may refer to one side and the opposite side of the one side in the second direction. The first-first stopper ST1a may overlap with the second-first stopper ST2a in the optical axis direction. The first-second stopper ST1b may overlap with the second-second stopper ST2b in the optical axis direction.

[0364] According to the driving of the first lens assembly, the first lens assembly 1222a may be positioned as close to the first stoppers ST1a and ST1b as possible. At this time, the distance dL1 between the guide portion GP in the first lens assembly 1222a and the first-first stopper ST1a may be smaller than the distance dL2 between the first-second stopper ST1b and the lens protruding portion LP of the first lens assembly. That is, even when the first lens assembly 1222a moves to the maximum limit toward the first camera actuator side, the first lens assembly 1222a may first collide with the first-first stopper ST1a and then may collide with the first-second stopper ST1b. Therefore, even when a lens made of glass is provided in the first lens assembly 1222a (for example, at the front end), the collision during the maximum movement of the first lens assembly 1222a (at the mechanical position) may be minimized. That is, the phenomenon of lens cracking may be suppressed. In addition, since shock absorption mainly occurs in the guide portion having a larger volume, damage to the first lens assembly may also be minimized.

[0365] Similarly, a distance dL3 between the second-second stopper ST2b and the guide portion GP of the second lens assembly 1222b may be smaller than a distance dL4 between the second-first stopper ST2a and the lens protrusion portion LP of the second lens assembly 1222b.

[0366] That is, even when the second lens assembly 1222b moves to the maximum limit toward the image sensor or in the optical axis direction, the second lens assembly 1222b may first collide with the second-second stopper ST2b and then may collide with the second-first stopper ST2a. Therefore, even when a lens made of glass is provided in the second lens assembly 1222b, the collision during the maximum movement (at the mechanical position) of the first lens assembly 1222a may be minimized. That is, the phenomenon of lens cracking may be suppressed. In addition, since shock absorption mainly occurs in the guide portion having a large volume, damage to the second lens assembly may also be minimized.

[0367] Fig.26 is a schematic diagram illustrating a circuit board according to an embodiment.

[0368] Reference Fig.26 , the circuit board 1300 according to the embodiment described above may include a first circuit board portion 1310 and a second circuit board portion 1320. The first circuit board portion 1310 is located below the base and may be coupled to the base. In addition, the image sensor IS may be disposed on the first circuit board portion 1310. The first circuit board portion 1310 and the image sensor IS may 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 (first circuit board portion) may be located at the rear end of the base. The base may include a filter (e.g., an infrared filter, etc.). The circuit board 1300 may include the image sensor and sensor base described above.

[0369] In addition, the second circuit board portion 1320 can be located on the side portion of the base. In particular, the second circuit board portion 1320 can be located on the first side portion of the base. Therefore, the second circuit board portion 1320 can be located adjacent to the first coil located adjacent to the first side portion, and therefore can be easily electrically connected. In addition, the second circuit board portion 1320 can be located on the second side portion. In this way, a plurality of second circuit board portions 1320 can be provided. However, the present invention is not limited thereto, and the second circuit board portion can be provided only on one of the first side portion and the second side portion.

[0370] In addition, the circuit board 1300 may further include a fixing plate (not shown) on the side surface. Therefore, even when the circuit board 1300 is made of a flexible material, the circuit board 1300 may be combined with the base while maintaining rigidity through the fixing plate.

[0371] The second circuit board portion 1320 of the circuit board 1300 may be located on a side portion of the driving portion 1250. The circuit board 1300 may be electrically connected to the first driving portion and the driving portion. For example, SMT may be used for electrical connection, but the electrical connection is not limited to this method.

[0372] The circuit board 1300 may include a circuit board having an electrically connectable wiring pattern, such as a rigid PCB, a flexible PCB, or a rigid-flexible PCB. However, the circuit board 1300 is not limited to these types of circuit boards.

[0373] In addition, the circuit board 1300 may be electrically connected to another camera module within the terminal or a processor of the terminal. Therefore, the camera actuator described above and the camera module including the camera actuator may transmit and receive various signals within the terminal.

[0374] Fig. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0375] like Fig. 27 As illustrated, the mobile terminal 1500 of the embodiment may include a camera module 1000 , a flash module 1530 , and an auto focus device 1510 disposed on a rear surface of the mobile terminal 1500 .

[0376] The camera module 1000 may include an image capturing function and an auto focus function. For example, the camera module 1000 may include an auto focus function using an image.

[0377] The camera module 1000 processes a still image frame or a moving image frame obtained by an image sensor in an image mode or a video call mode.

[0378] The processed image frame may be displayed on a predetermined display portion and may be stored in a memory.A camera (not shown) may also be provided on the front surface of the mobile terminal body.

[0379] For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and OIS may be implemented together with an AF function or a zoom function through the first camera module 1000A.

[0380] The flash module 1530 may include a light emitting element that emits light therein. The flash module 1530 may be operated by a camera operation of the mobile terminal or by a user's control.

[0381] The auto focus device 1510 may include one of the packages of the surface emitting laser device as a light emitting portion.

[0382] The auto focus device 1510 may include an auto focus function using a laser. The auto focus device 1510 may be mainly used under a condition where an auto focus function using an image of the camera module 1000 is degraded, such as in a close distance environment of 10 m or less or in a dark environment.

[0383] The auto focus device 1510 may include a light emitting portion having a vertical cavity surface emitting laser (VCSEL) semiconductor device, and a light receiving portion such as a photodiode that converts light energy into electrical energy.

[0384] Fig.28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0385] For example, Fig.28 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera module 1000 according to the embodiment is applied.

[0386] Reference Fig.28 The vehicle 700 of the embodiment may be equipped with wheels 13FL and 13FR that rotate by a power source, and a predetermined sensor. The sensor may be a camera sensor 2000, but is not limited thereto.

[0387] The camera sensor 2000 may be a camera sensor applied to the camera module 1000 according to the embodiment. The vehicle 700 of the embodiment may obtain image information through the camera sensor 2000 that captures a front image or a surrounding image, and may use the image information to determine a lane unrecognition situation and create a virtual lane when the lane is unrecognized.

[0388] For example, the camera sensor 2000 may capture a front image of the vehicle 700 , and a processor (not shown) may analyze an object contained in the front image to obtain image information.

[0389] For example, when objects such as lanes, neighboring vehicles, traffic obstacles, and indirect road markings such as central medians, curbs, and roadside trees are captured in the image captured by the camera sensor 2000, the processor can detect these objects and include them in the image information. At this time, the processor can obtain distance information from the objects detected by the camera sensor 2000 to further supplement the image information.

[0390] The image information may be information related to an object captured in an image. The camera sensor 2000 may include an image sensor and an image processing module.

[0391] The camera sensor 2000 may process a still image or a moving image obtained by an image sensor (eg, CMOS or CCD).

[0392] The image processing module can process static images or dynamic images acquired by the image sensor, can extract necessary information, and can transmit the extracted information to the processor.

[0393] At this time, the camera sensor 2000 may include a stereo camera in order to improve the measurement accuracy of the object and ensure more information such as the distance between the vehicle 700 and the object, but is not limited thereto.

[0394] Although the above content has been described with reference to the embodiments, these embodiments are merely examples and will not limit the present invention. It will be appreciated by those skilled in the art that various modifications and applications not illustrated above are possible without departing from the basic features of the present invention. For example, each component specifically shown in the embodiments may be modified and implemented. The differences associated with such modifications and applications should be interpreted as being included within the scope of the present invention as defined in the appended claims.

Claims

1. A camera actuator, comprising: case; a first lens assembly, the first lens assembly being configured to move relative to the housing along an optical axis; a ball portion, the ball portion being located in the first lens assembly; as well as a driving portion configured to move the first lens assembly, The first lens assembly includes a receiving portion and a guiding portion, the receiving portion has a lens hole, a plurality of lenses are received in the lens hole, the guiding portion is configured to contact the receiving portion, and the ball portion is disposed in the guiding portion, and The axis of the lens hole is disposed to be misaligned with an outer surface of the guide portion adjacent to the ball bearing portion.

2. The camera actuator according to claim 1, wherein: An upper surface of the accommodating portion is not perpendicular to the outer surface of the guide portion adjacent to the ball bearing portion.

3. The camera actuator according to claim 1, wherein: An upper surface of the receiving portion and the outer surface of the guide portion adjacent to the ball bearing portion form a first angle. 4 . The camera actuator of claim 3 , comprising a lens group disposed in the lens hole of the first lens assembly.

5. The camera actuator according to claim 4, wherein: An upper surface of the accommodating portion forms a second angle with a plane perpendicular to the axis of the lens group.

6. The camera actuator according to claim 5, wherein: The first angle and the second angle have the same magnitude.

7. The camera actuator according to claim 4, wherein: The axis of the lens group is parallel to the optical axis direction.

8. The camera actuator according to claim 4, wherein: The upper surface of the accommodating portion includes a first end portion located on one side and a second end portion located on the other side in a direction perpendicular to the optical axis direction, and The upper surface of the lens group includes a third end portion located on one side and a fourth end portion located on the other side in a direction perpendicular to the optical axis direction.

9. The camera actuator according to claim 8, wherein: A separation distance between the first end portion and the second end portion in the optical axis direction is greater than a separation distance between the third end portion and the fourth end portion in the optical axis direction.

10. The camera actuator according to claim 8, wherein: The first end portion is located at a front end of the second end portion, and the third end portion overlaps with the fourth end portion in a direction perpendicular to the optical axis direction.

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