Camera actuator and camera module including same

Abstract

An embodiment of the present invention discloses a camera actuator including: a housing; a first lens assembly that moves in an optical axis direction relative to the housing; a ball portion located on the first lens assembly; and a drive portion that moves the first lens assembly; the first lens assembly includes a storage portion having a lens hole that stores multiple lenses; and a guide portion that contacts the storage portion and in which the ball portion is located; and the axis of the lens hole is positioned offset from the 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 same. [Background technology]

[0002] A camera is a device that takes photos or videos of a subject and is attached to mobile devices, drones, vehicles, etc. To improve image quality, a camera module can have an image stabilization (IS) function that corrects or prevents image shake caused by user movement, an autofocus (AF) function that automatically adjusts the distance between the image sensor and lens to align the lens focal length, and a zoom function that increases or decreases the magnification of a distant subject through a zoom lens.

[0003] However, in order to accurately perform zooming and autofocus (AF) functions within the camera module, the linearity of the moving lens assembly and corresponding corrections are required. Summary of the Invention [Problem to be solved by the invention]

[0004] A technical problem that the embodiments of the present invention aim to solve is to provide a camera actuator and a camera device that improves optical straightness due to warping of the lens assembly.

[0005] Additionally, embodiments of the present invention can provide a camera actuator and camera device with improved reliability by absorbing shock to the lens assembly.

[0006] The technical problem that the present invention aims to solve is to provide a camera actuator that is applicable to ultra-slim, ultra-compact and high-resolution cameras.

[0007] The problems to be solved by the examples are not limited to these, and may also include the objectives and effects that can be grasped from the means for solving the problems and embodiments described below. [Means for solving the problem]

[0008] A camera actuator according to an embodiment of the present invention includes a housing; a first lens assembly that moves in an optical axis direction based on the housing; a ball portion located on the first lens assembly; and a drive portion that moves the first lens assembly. The first lens assembly includes a storage portion having a lens hole that stores multiple lenses; and a guide portion that contacts the storage portion and in which the ball portion is located. The axis of the lens hole is positioned offset from the outer surface of the guide portion adjacent to the ball portion.

[0009] The upper surface of the receiving portion may be non-perpendicular to the outer surface of the guide portion adjacent to the ball portion.

[0010] An upper surface of the receiving portion and an outer surface of the guide portion adjacent to the ball portion may form a first angle.

[0011] The lens assembly may include a lens group disposed in a lens hole of the first lens assembly.

[0012] The upper surface of the receiving portion and a plane perpendicular to the axis of the lens group may form a second angle.

[0013] The first angle and the second angle may have the same magnitude.

[0014] The axis of the lens group may be aligned with the optical axis direction.

[0015] The upper surface of the accommodating portion may include a first end located on one side in a direction perpendicular to the optical axis direction and a second end located on the other side, and the upper surface of the lens group may include a third end located on one side in a direction perpendicular to the optical axis direction and a fourth end located on the other side.

[0016] A distance between the first end and the second end in the optical axis direction may be greater than a distance between the third end and the fourth end in the optical axis direction.

[0017] The first end may be located at a front end of the second end, and the third end may overlap the fourth end in a direction perpendicular to the optical axis direction.

[0018] It may include a first adjustment member disposed on the bottom surface of the receiving portion.

[0019] 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.

[0020] The first lens assembly may include a second adjustment member spaced apart from the first adjustment member.

[0021] The first and second adjustment members may have different lengths in the optical axis direction.

[0022] The first lens assembly may include a lens protrusion that contacts the receiving portion and corresponds to the guide portion, and the guide portion may be located on one side of the receiving portion, and the lens protrusion may be located on the other side of the receiving portion.

[0023] A camera actuator according to an embodiment of the present invention includes a housing; a first lens assembly that moves in an optical axis direction relative to the housing; a ball portion located on the first lens assembly; and a drive portion that moves the first lens assembly, wherein the first lens assembly includes a storage portion having lens holes that accommodate multiple lenses; and a first adjustment member that is arranged on the bottom surface of the storage portion.

[0024] 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.

[0025] The first lens assembly may include a second adjustment member spaced apart from the first adjustment member.

[0026] The second adjustment member may be offset from a bisector of the first lens assembly in the first direction.

[0027] The first and second adjustment members may have different lengths in the optical axis direction.

[0028] The first adjustment member may extend in the optical axis direction.

[0029] The first lens assembly may include a guide portion that contacts the receiving portion and in which the ball portion is positioned.

[0030] The first lens assembly may include a lens protrusion that contacts the receiving portion and corresponds to the guide portion.

[0031] The guide portion may be located on one side of the receiving portion, and the lens protrusion portion may be located on the other side of the receiving portion.

[0032] The first lens assembly may include a first housing lens and a second housing lens sequentially arranged in the optical axis direction.

[0033] The first housing lens may include a first lens outer surface adjacent to the lens protrusion 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 shifted in a second direction perpendicular to the first direction and the optical axis direction.

[0034] The second lens may include a third lens outer surface adjacent to the lens protrusion 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 shifted in a second direction perpendicular to the first direction and the optical axis direction.

[0035] The upper surface of the guide portion may be disposed at a front end of the upper surface of the lens protrusion portion.

[0036] The housing may include a first stopper disposed at one end and a second stopper disposed at the other end, the first stopper may include a 1-1 stopper disposed at one side and a 1-2 stopper disposed at the other side, and the second stopper may include a 2-1 stopper disposed at one side and a 2-2 stopper disposed at the other side.

[0037] 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. [Effects of the Invention]

[0038] According to an embodiment of the present invention, a camera actuator and a camera device are provided that improve optical straightness due to warpage of a lens assembly.

[0039] Furthermore, the embodiments of the present invention can realize a camera actuator and a camera device with improved reliability by absorbing the impact of the lens assembly.

[0040] The technical problem to be solved by the present invention is to realize a camera actuator that can be applied to ultra-slim, ultra-compact and high-resolution cameras.

[0041] The various beneficial advantages and effects of the present invention are not limited to the above, but will be more easily understood in the course of describing specific embodiments of the present invention. [Brief explanation of the drawings]

[0042] [Figure 1] FIG. 1 is a perspective view of a camera module according to an embodiment.

[0043] [Figure 2] FIG. 1 is an exploded perspective view of a camera module according to an embodiment.

[0044] [Figure 3] This is a view from AA' in Figure 1.

[0045] [Figure 4] FIG. 2 is a perspective view of a second camera actuator according to the embodiment.

[0046] [Figure 5] FIG. 2 is an exploded perspective view of a second camera actuator according to the embodiment.

[0047] [Figure 6] FIG. 5 is a cross-sectional view taken along line DD′ in FIG. 4.

[0048] [Figure 7] 4 is a diagram illustrating each drive of a lens assembly according to an embodiment. [Figure 8] 4 is a diagram illustrating each drive of a lens assembly according to an embodiment.

[0049] [Figure 9] 10 is a diagram illustrating driving of a second camera actuator according to an embodiment.

[0050] [Figure 10] FIG. 10 is a perspective view of a part of the configuration of a second camera actuator in the embodiment.

[0051] [Figure 11] FIG. 2 is a perspective view of a first lens assembly (or a second lens assembly) according to the embodiment.

[0052] [Figure 12] FIG. 2 is a front view of a first lens assembly (or a second lens assembly) according to the embodiment.

[0053] [Figure 13] FIG. 2 is a side view of a first lens assembly (or a second lens assembly) according to the embodiment.

[0054] [Figure 14] It is a rear view of the first lens assembly (or the second lens assembly) according to the embodiment.

[0055] [Figure 15] It is a side view of the other side of the first lens assembly (or the second lens assembly) according to the embodiment.

[0056] [Figure 16a] It is a perspective view of the measuring device according to the embodiment.

[0057] [Figure 16b] It is a side view of the measuring device according to the embodiment.

[0058] [Figure 16c] It is a side view of the other side of the measuring device according to the embodiment.

[0059] [Figure 17a] It is a perspective view of the measuring ball, the measuring device, and the first lens assembly according to the embodiment.

[0060] [Figure 17b] It is a side view of FIG. 17a.

[0061] [Figure 17c] It is a drawing viewed by cutting a part of FIG. 17b.

[0062] [Figure 17d] It is a drawing for explaining the measuring method through the measuring device according to the embodiment.

[0063] [Figure 17e] It is a drawing showing various shapes of the lens assembly according to the embodiment.

[0064] [Figure 17f] It is a drawing for explaining the tilted angle in the measuring method through the measuring device according to the embodiment. [Figure 17g] 10 is a diagram illustrating an inclined angle in a measurement method using a measurement device according to an embodiment. [Figure 17h] 10 is a diagram illustrating an inclined angle in a measurement method using a measurement device according to an embodiment.

[0065] [Figure 17i] 3A and 3B are a cutaway view and an enlarged view of a second camera actuator according to an embodiment.

[0066] [Figure 18] FIG. 10 is yet another side view of the first lens assembly (or the second lens assembly) according to the embodiment.

[0067] [Figure 19] FIG. 19 is a perspective view taken along the line CC′ in FIG. 18.

[0068] [Figure 20] This is a view taken along the line CC' in FIG.

[0069] [Figure 21] FIG. 18 shows the lens group accommodated.

[0070] [Figure 22] 3 is a diagram of a first lens assembly and a second lens assembly according to an embodiment.

[0071] [Figure 23] This is a view taken along the line EE' in FIG.

[0072] [Figure 24] FIG. 4 is a cross-sectional view of a second camera actuator in the embodiment.

[0073] [Figure 25] This is an enlarged view of part P in FIG.

[0074] [Figure 26]FIG. 1 is a schematic diagram illustrating a circuit board according to an embodiment.

[0075] [Figure 27] 1 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied;

[0076] [Figure 28] 1 is a perspective view of a vehicle to which a camera module according to an embodiment is applied; DETAILED DESCRIPTION OF THE INVENTION

[0077] The present invention can be modified in various ways and can have various embodiments, and a specific embodiment will be described by way of example in the drawings. However, it is not intended to limit the present invention to the specific embodiment, and it should be understood that the present invention includes all modifications, equivalents, and alternatives that fall within the spirit and technical scope of the present invention.

[0078] Terms including ordinal numbers, such as "second," "first," etc., may be used to describe various components, but the components are not limited by the terms. Terms are used only to distinguish one component from another. For example, a second component may be designated as a "first component," and similarly, a first component may be designated as a "second component," without departing from the scope of the present invention. The term "and / or" includes a combination of multiple related listed items or any of multiple related listed items.

[0079] When a component is said to be "coupled" or "connected" to another component, it should be understood that it may be directly coupled or connected to the other component, but that there may be other components in between. Conversely, when a component is said to be "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0080] The terms used in this application are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expressions include the plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprise" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0081] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0082] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, and the same or corresponding elements will be given the same reference numerals regardless of the drawing reference numerals, and redundant description thereof will be omitted.

[0083] FIG. 1 is a perspective view of a camera module according to an embodiment, FIG. 2 is an exploded perspective view of the camera module according to the embodiment, and FIG. 3 is a view seen from the line AA' in FIG.

[0084] 1 and 2, a camera module 1000 according to an embodiment may include a cover CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. Here, the first camera actuator 1100 may be used interchangeably with the first actuator, and the second camera actuator 1200 may be used interchangeably with the second actuator.

[0085] The cover CV can cover the first camera actuator 1100 and the second camera actuator 1200. The cover CV can improve the coupling force between the first camera actuator 1100 and the second camera actuator 1200.

[0086] Furthermore, the cover CV may be made of a material that blocks electromagnetic waves, thereby easily protecting the first camera actuator 1100 and the second camera actuator 1200 within the cover CV.

[0087] The first camera actuator 1100 may be an OIS (Optical Image Stabilizer) actuator. For example, the first camera actuator 1100 may move an optical member in a direction perpendicular to the optical axis (axis of incident light).

[0088] The first camera actuator 1100 may include a fixed focal length lens disposed in a predetermined lens barrel (not shown). A fixed focal length lens may also be referred to as a "single focal length lens" or "single lens."

[0089] The first camera actuator 1100 can change the path of light. As an example, the first camera actuator 1100 can change the path of light vertically through an internal optical member (e.g., a prism or mirror). For example, the optical member can change the light from a first direction (X-axis direction) to a third direction (Z-axis direction). Alternatively, the optical member can change the light from a first axis to a second axis. With this configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be disposed within the mobile terminal through the change in the path of light, thereby enabling magnification, autofocusing (AF), zoom, and OIS functions to be performed.

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

[0091] The second camera actuator 1200 may be disposed at the rear end of the first camera actuator 1100. The second camera actuator 1200 may be coupled to the first camera actuator 1100. The coupling therebetween may be achieved in various ways.

[0092] 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 move the lenses in response to a control signal from a controller to perform an auto focus function or a zoom function.

[0093] One or more lenses move independently or individually along the optical axis.

[0094] The circuit board 1300 may be disposed at the rear end 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. There may also be a plurality of circuit boards 1300.

[0095] The camera module according to the embodiment may be a single camera module or multiple camera modules, for example, multiple camera modules may include a first camera module and a second camera module.

[0096] The first camera module may include a single actuator or multiple actuators. For example, the first camera module may include a first camera actuator 1100 and a second camera actuator 1200.

[0097] 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 unit. The actuator may be a voice coil motor, a microactuator, a silicon actuator, or the like, and may be variously applied, such as an electrostatic type, a thermal type, a bimorph type, or an electrostatic force type, but is not limited thereto. In addition, in this specification, a camera actuator may be referred to as an actuator, etc. Furthermore, a camera module consisting of multiple camera modules may be mounted in various electronic devices such as a mobile terminal. Furthermore, an actuator may be a device that moves or tilts a lens or optical member. However, hereinafter, the actuator will be described as including a lens or an optical member. Furthermore, an actuator may be referred to as a "lens moving device," a "lens moving device," an "optical member moving device," an "optical member moving device," etc.

[0098] Referring to FIG. 3, the camera module according to the embodiment may include a first camera actuator 1100 that performs an OIS function and a second camera actuator 1200 that performs a zooming function and an AF (Auto-Focusing) function.

[0099] Light may enter the camera module or the first camera actuator through an opening region located on the top surface of the first camera actuator 1100. That is, the light is primarily incident on the first camera actuator 1100 along a vertical direction (e.g., the X-axis direction, based on the incident light) and the light path may be changed to an optical axis direction (e.g., the Z-axis direction) through an optical member. The light then passes through the second camera actuator 1200 and may be incident on the image sensor IS located at one end of the second camera actuator 1200 (PATH). In this specification, the Z-axis direction or the third direction will be referred to as the optical axis direction. The optical axis direction may correspond to the 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, it may correspond to the direction in which the moving assembly moves from the second camera actuator. Furthermore, the first direction, or X-axis direction, will be referred to as the vertical direction. The second direction, or Y-axis direction, will be referred to as the horizontal direction.

[0100] In this specification, the bottom surface refers to one side in the first direction. The first direction is the X-axis direction in the drawing and may be interchangeably referred to as the second-axis direction, etc. The second direction is the Y-axis direction in the drawing and may be interchangeably referred to as the first-axis direction, etc. The second direction is a direction perpendicular to the first direction. The third direction is the Z-axis direction in the drawing and may be interchangeably referred to as the third-axis direction, etc. The third direction is a direction perpendicular to both the first and second directions. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are directions perpendicular to the optical axis. In the following description of the first and second camera actuators, the optical axis direction is the third direction (Z-axis direction), and the following description will be based on this.

[0101] In addition, in this specification, the "inside" may be the direction from the cover CV toward the first camera actuator, and the "outside" may be the opposite direction to the inside. That is, the first camera actuator and the second camera actuator may be located inside the cover CV, and the cover CV may be located outside the first camera actuator or the second camera actuator.

[0102] With this configuration, the camera module according to the embodiment can improve the spatial limitations of the first and second camera actuators by changing the optical path. That is, the camera module according to the embodiment can expand the optical path while minimizing the thickness of the camera module in response to the change in the optical path. Furthermore, it should be understood that the second camera actuator can provide a wide range of magnification by controlling the focus, etc., in the expanded optical path.

[0103] In addition, the camera module according to the embodiment can implement OIS by controlling the optical path through the first camera actuator, thereby minimizing the occurrence of descent and tilt phenomena and exhibiting the best optical characteristics.

[0104] Furthermore, the second camera actuator 1200 may include an optical system and a lens driving unit. For example, the second camera actuator 1200 may include at least one of a first lens assembly, a second lens assembly, and a third lens assembly.

[0105] Also, the second camera actuator 1200 includes a coil and a magnet, and can perform high magnification zooming and autofocus functions.

[0106] For example, the first and second lens assemblies may be moving lenses that move through a coil, a magnet, and a guide pin, and the third lens assembly may be a fixed lens, but is not limited thereto.

[0107] Meanwhile, when an OIS actuator and an AF / Zoom actuator are arranged according to an embodiment of the present invention, magnetic field interference with the AF / Zoom magnet can be prevented when the OIS is driven. Since the first driving magnet of the first camera actuator 1100 is arranged separately from the second camera actuator 1200, magnetic field interference between the first camera actuator 1100 and the second camera actuator 1200 can be prevented. In this specification, OIS may be used interchangeably with terms such as image stabilization, optical image stabilization, optical image correction, and shake correction.

[0108] In particular, the optical member RM can be tilted along the X-axis or the Y-axis by the first camera actuator 1100. This allows for easy change of the optical path by tilting along the X-axis or the Y-axis.

[0109] The optical member RM may be attached to a holder of the first camera actuator. In the following embodiment, the optical member RM may be a mirror or a prism. Although a prism will be illustrated below, the optical member RM may be composed of a plurality of lenses as in the previous embodiment. Alternatively, the optical member RM may be composed of a plurality of lenses and a prism or mirror. The optical member RM may also include a reflecting portion disposed therein. However, the optical member RM is not limited thereto.

[0110] The optical member RM may be tilted along the X-axis or the Y-axis by driving the VCM etc. in the first camera actuator 1100. That is, the OIS may be implemented by tilting or rotating the optical member RM based on the Y-axis or the X-axis.

[0111] Figure 4 is a perspective view of the second camera actuator according to the embodiment, Figure 5 is an exploded perspective view of the second camera actuator according to the embodiment, Figure 6 is a cross-sectional view taken along line DD' in Figure 4, Figures 7 and 8 are drawings explaining each drive of the lens assembly according to the embodiment, and Figure 9 is a drawing explaining the drive of the second camera actuator according to the embodiment.

[0112] 4 to 6, second camera actuator 1200 (or camera device or zoom lens transport device or zoom lens moving device or lens transport device) according to the embodiment may include lens unit 1220, housing 1230, yoke unit 1240, drive unit 1250, base unit 1260, substrate unit 1270, and stoppers ST1 and ST2. Furthermore, second camera actuator 1200 may further include a shielding can (not shown), an elastic unit (not shown), and a joining member (not shown).

[0113] In addition, as described below, the lens group may move along the optical axis. The lens group may be coupled to the lens assembly and move along the optical axis together. In this case, the second camera actuator may include a moving unit that moves along the optical axis like the lens group, and a fixed unit that is fixed relatively to the moving unit and does not move along the optical axis. In this embodiment, the moving unit may include a lens assembly (e.g., first and second lens assemblies) and optical driving magnets (first and second driving magnets). The fixed unit may include a housing, a substrate, optical driving coils (first and second coils), and a Hall sensor. A driving magnet may be disposed on one of the moving unit and the fixed unit, and a driving coil may be disposed on the other. In accordance with this description, the moving distance of the lens assembly (described below) may correspond to the moving distance of the moving unit.

[0114] The shielding can (not shown) can be located in one area (e.g., the outermost) of the second camera actuator 1200 and can be positioned to surround the components described below (lens section 1220, housing 1230, drive section 1250, base section 1260, substrate section 1270, and image sensor IS arranged on the rear circuit board).

[0115] Such a shielding can (not shown) can block or reduce externally generated electromagnetic waves, thereby reducing the occurrence of malfunctions in the driver 1250.

[0116] The lens unit 1220 may be located within a shielding can (not shown). The lens unit 1220 may move along a third direction (Z-axis direction or optical axis direction). Accordingly, the above-mentioned AF function or zoom function may be performed.

[0117] Also, the lens unit 1220 may be located within the housing 1230. This allows at least a portion of the lens unit 1220 to move within the housing 1230 along the optical axis direction or the third direction (Z-axis direction).

[0118] Specifically, the lens unit 1220 can include a lens group 1221 and a moving assembly 1222 .

[0119] First, the lens group 1221 can include at least one lens. Also, although there can be a plurality of lens groups 1221, the following description will be given based on one lens group.

[0120] The lens group 1221 is coupled to the moving assembly 1222 and can move in the third direction (Z-axis direction) by the electromagnetic force generated by the first magnet 1252a and the second magnet 1252b coupled to the moving assembly 1222.

[0121] As an example, 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 sequentially along the optical axis. Furthermore, the lens group 1221 may further include a fourth lens group. The fourth lens group may be arranged at the rear end of the third lens group 1221c.

[0122] The first lens group 1221a may be fixed by being coupled to the second housing (or a fixed assembly). In other words, the first lens group 1221a does not need to move along the optical axis direction.

[0123] The second lens group 1221b is coupled with the first lens assembly 1222a and can move in the third direction or the light side direction. Magnification can be adjusted by moving the first lens assembly 1222a and the second lens group 1221b.

[0124] The third lens group 1221c is coupled to the second lens assembly 1222b and can move in a third direction or in the optical axis direction. The movement of the third lens group 1221c can perform focus adjustment or autofocusing.

[0125] However, the number of lens groups is not limited to this, and the fourth lens group may not be present or may be 1. 2 An additional lens group other than 21d may be further arranged.

[0126] The moving assembly 1222 may include an open area surrounding the lens group 1221. Such a moving assembly 1222 may be used in combination with the first and second lens assemblies. The moving assembly 1222 or the lens assembly may move along the optical axis direction (Z-axis direction) within the housing 1230. The moving assembly 1222 may be coupled to the lens group 1221 in various ways. The moving assembly 1222 may also include grooves on its side, through which the first magnet 1252a and the second magnet 1252b may be coupled. A coupling material may be applied to the grooves.

[0127] Additionally, the moving assembly 1222 may be coupled to elastic members (not shown) at its upper and rear ends. This allows the moving assembly 1222 to be supported by the elastic members (not shown) while moving in the third direction (Z-axis direction). That is, the position of the moving assembly 1222 can be maintained in the third direction (Z-axis direction). The elastic members (not shown) may be made of various elastic elements such as a leaf spring.

[0128] The translation assembly 1222 is located within a housing 1230 and can include a first lens assembly 1222a and a second lens assembly 1222b.

[0129] The area where the third lens group 1221c of the second lens assembly 1222b is mounted may be located at the rear end of the first lens assembly 1222a. In other words, the area where the third lens group 1221c of the second lens assembly 1222b is mounted may be located between the area where the second lens group 1221b of the first lens assembly 1222a is mounted and the image sensor.

[0130] The first lens assembly 1222a and the second lens assembly 1222b may face a first guide portion and a second guide portion, respectively. The first guide portion and the second guide portion may be located on a first side 1232a and a second side 1232b of a housing 1230 (or a 2-2 housing) described below. The first guide portion and the second guide portion may be disposed integrally or separately on the first side 1232a and the second side 1232b of the housing 1230 (or a 2-2 housing) described below. The following description will be based on the integral type.

[0131] Optically driven magnets may be attached to the outer surfaces of the first lens assembly 1222a and the second lens assembly 1222b. For example, a second magnet 1252b may be attached to the outer surface of the second lens assembly 1222b. A first magnet 1252a may be attached to the outer surface of the first lens assembly 1222a. In this specification, the first lens assembly 1222a may be referred to as a "first bobbin." The second lens assembly 1222b may be referred to as a "second bobbin."

[0132] The housing 1230 may be disposed between the lens portion 1220 and a shielding can (not shown), and may be disposed so as to surround the lens portion 1220.

[0133] The housing 1230 may include a second housing 1231, a second housing 1232, and a cover base CB. The second housing 1231 is coupled to the first lens group 1221a and may also be coupled to the first camera actuator described above. The second housing 1231 may be located in front of the second housing 1232. The second housing may be referred to as a "fixed assembly," a "fixed lens assembly," a "fixed lens housing," etc. The second housing may be referred to as a "main barrel," a "lens barrel," a "barrel," etc.

[0134] The second housing 1232 may be located at the rear end of the first housing 1231. The first and second lens assemblies and the lens unit 1220 may be mounted inside the second housing 1232.

[0135] The housing 1230 (or the second housing 1232) may have holes formed on its sides. The first coil 1251a and the second coil 1251b may be disposed in the holes. The holes may be positioned to correspond to the grooves of the moving assembly 1222 described above. In this case, there may be a plurality of first coils 1251a and second coils 1251b.

[0136] As an example, the housing 1230 (particularly, the second housing 1232) may include a first side 1232a and a second side 1232b. The first side 1232a and the second side 1232b may be positioned corresponding to each other. For example, the first side 1232a and the second side 1232b may be arranged symmetrically with respect to the third direction. An optical driving coil 1251 may be positioned on the first side 1232a and the second side 1232b. A substrate 1270 may be attached to the outer surfaces of the first side 1232a and the second side 1232b. In other words, a first substrate may be positioned on the outer surface of the first side 1232a, and a second substrate may be positioned on the outer surface of the second side 1232b.

[0137] The cover base CB may be disposed between the second housing 1231 and the second housing 1232. The cover base CB may prevent the lenses (e.g., the first lens group) disposed or housed in the second housing 1231 (or the fixed assembly) from being damaged by impact. That is, the cover base CB may absorb impact on the moving assembly when the moving assembly moves within the second housing 1232. Furthermore, the first stopper ST1a and the first stopper ST1b (described later) may be located on the rear or bottom surface of the cover base CB. For example, the first stopper ST1a and the first stopper ST1b may be located between the cover base CB and the moving assembly (e.g., the first lens assembly). This allows the moving assembly to make primary contact with the first stopper ST1a and the first stopper ST1b. This may improve the reliability of the lens group.

[0138] Furthermore, the cover base CB can be bonded to the second housing 1231 and the second housing 1232 using a bonding material (e.g., epoxy). Thus, by adjusting the shape of the cover base CB, the second housing 1231 and the second housing 1232 can be easily bonded to each other. Also, the addition of the cover base CB can ensure ease of manufacture of at least one of the second housing 1231 and the second housing 1232.

[0139] The first guide portion and the second guide portion may be located on a first side 1232a and a second side 1232b of the housing 1230 (particularly, the second-second housing 1232).

[0140] 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 based on the third direction (Z-axis direction). Also, the first guide portion and the second guide portion may at least partially overlap each other in the second direction (Y-axis direction).

[0141] The first guide portion and the second guide portion may include at least one groove (e.g., guide groove) or recess, and the first ball B1 or the second ball B2 may be mounted in the groove or recess.

[0142] First, the second camera actuator 1200 may further include a ball unit. The ball unit may include a first ball B1 and a second ball B2. The ball unit allows the first and second lens assemblies to move along the optical axis direction. At this time, the ball unit may include at least one rolling member, i.e., a ball. At least one ball may move along the guide grooves of the first and second guide units. Also, at least one ball may move along the recess or groove of the first and second lens assemblies. As a result, the first ball B1 or the second ball B2 may move in the third direction (Z-axis direction) within the guide groove of the first guide unit or the guide groove of the second guide unit.

[0143] Alternatively, the first ball B1 or the second ball B2 can move in a third direction along a rail formed on the inside of the first side 1232a of the housing 1230 or a rail formed on the inside of the second side 1232b of the housing 1230.

[0144] Thus, the first lens assembly 1222a and the second lens assembly 1222b can move in the third direction or the optical axis direction, and the second lens assembly 1222b can be positioned adjacent to or closer to the image sensor than the first lens assembly 1222a.

[0145] According to the embodiment, the first ball B1 can contact the first lens assembly 1222a, and the second ball B2 can contact the second lens assembly 1222b. Therefore, depending on the position, the first ball B1 can at least partially overlap the second ball B2 along the first direction (X-axis direction).

[0146] The first and second guide parts may include a first guide groove facing the first recess RS1, and the first and second guide parts may include a second guide groove facing the second recess RS2.

[0147] Also, there may be a plurality of first guide grooves or second guide grooves, and a plurality of balls having at least some different diameters may be positioned in the plurality of guide grooves.

[0148] The second magnet 1252b may be positioned to face the second coil 1251b, and the first magnet 1252a may be positioned to face the first coil 1251a.

[0149] For example, at least one of the first coil 1251a and the second coil 1251b may consist of at least one coil. For example, the first coil 1251a may consist of multiple coils. The second coil 1251b may consist of multiple coils. Furthermore, even when the first coil and the second coil are each a single coil, a long stroke, as described below, may be realized.

[0150] As an example, the optical drive coil 1251 may be composed of sub-coils arranged sequentially along the optical axis (Z-axis) direction. For example, multiple sub-coils may be arranged sequentially along the optical axis on each side of the main barrel 1232. The term "2-2 housing" may be used interchangeably with "main barrel."

[0151] In this embodiment, the optical driver (or driver 1250) may include a first driver and a second driver. The first driver may provide a driving force to move the first lens assembly 1222a along the optical axis direction. The first driver may include a first coil 1251a and a first magnet 1252a. The first driver may also include a first driver coil and a first driver magnet. Therefore, the first coil 1251a may be referred to as the "first driver coil," and the first magnet 1252a may be referred to as the "first driver magnet."

[0152] The second driving unit may provide a driving force for moving the second lens assembly 1222b along the optical axis direction, and may include a second coil 1251b and a second magnet 1252b.

[0153] The second drive unit may also include a second drive coil and a second drive magnet. Thus, the second coil 1251b may be referred to as the "second drive coil," and the second magnet 1252b may be referred to as the "second drive magnet."

[0154] The elastic portion (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. The first elastic member (not shown) and the second elastic member (not shown) may be formed of a leaf spring as described above. 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, the positions are not limited to those described above, and the elastic portion may be arranged in various positions.

[0155] The actuator 1250 may provide a driving force for moving the lens unit 1220 in the third direction (Z-axis direction). The actuator 1250 may include an optical driving coil 1251 and an optical driving magnet 1252. The optical driving coil 1251 and the optical driving magnet 1252 may be positioned to face each other. For example, the first driving coil 1251a and the first driving magnet 1252a may be positioned to face each other. The second driving coil 1251b and the second driving magnet 1252b may be positioned to face each other. The first driving coil 1251a may be positioned on one side of the housing along the second direction, and the second driving coil 1251a may be positioned on the other side of the housing along the second direction.

[0156] Furthermore, the driving unit 1250 may further include a Hall sensor unit 1253. The Hall sensor unit 1253 includes at least one first Hall sensor 1253a and a second Hall sensor 1253b, and may be located inside or outside the optical driving coil 1251.

[0157] The electromagnetic force formed between the optical drive coil 1251 and the optical drive magnet 1252 allows the translation assembly to move in the third direction (Z-axis direction).

[0158] The optical driving coil 1251 may include a first coil 1251a and a second coil 1251b. 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 holes formed in the sides of the housing 1230. The first coil 1251a and the second coil 1251b may be electrically connected to the substrate 1270. As a result, the first coil 1251a and the second coil 1251b may be supplied with current through the substrate 1270.

[0159] The optical drive coil 1251 can then be coupled to the substrate portion 1270 via a yoke or the like.

[0160] Also, as an example, the optical drive coil 1251 is a clamping element together with the substrate portion 1270. In contrast to this, the optical drive magnet 1252 is a moving element that moves in the optical axis direction (Z-axis direction) together with the first and second assemblies.

[0161] The optically driven magnet 1252 can include a first magnet 1252a and a second magnet 1252b.

[0162] For example, 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.

[0163] The second coil 1251b may include a third sub-coil SC1b and a fourth sub-coil SC2b. The third sub-coil SC1b and the fourth sub-coil SC2b may be sequentially arranged in the optical axis direction. The third sub-coil SC1b may be positioned closer to the first camera actuator than the fourth sub-coil SC2b.

[0164] The first magnet 1252a may face the first subcoil SC1a and the second subcoil SC2a. The second magnet 1252b may face the third subcoil SC1b and the fourth subcoil SC2b. The first subcoil SC1a may be positioned to overlap the third subcoil SC1b in the second direction. The second subcoil SC2a may be positioned to overlap the fourth subcoil SC2b in the second direction. In this way, the first magnet 1252a and the second magnet 1252b may be positioned to face the two same subcoils.

[0165] Furthermore, the coils of the first and second driving units of the second camera actuator may be described as including first sub-coils SC1a and SC1b and second sub-coils SC2a and SC2b, although the sub-coils driving the second lens assembly may be referred to as third and fourth sub-coils in the specification.

[0166] The first subcoil SC1a and the second subcoil SC2a may be spaced apart from each other in the optical axis direction. The first subcoil SC1a and the second subcoil SC2a may be connected in parallel to each other. For example, one end of the first subcoil SC1a may be connected to one end of the second subcoil SC2a at one node. The other end of the first subcoil SC1a may be connected to the other end of the second subcoil SC2a at another node. That is, the current applied to the first subcoil SC1a and the second subcoil SC2a may be distributed to each subcoil. As a result, the first subcoil SC1a and the second subcoil SC2a are electrically connected in parallel, thereby reducing heat generation.

[0167] Furthermore, the polarity of one surface of the first drive magnet 1252a facing the first drive coils SC1a and SC2a may be the same as the polarity of one surface of the second drive magnet 1252b facing the second drive coils SC1b and SC2b. For example, the inner surfaces of the first drive magnet 1252a and the second drive magnet 1252b may have either an N pole or an S pole (e.g., an N pole). The outer surfaces of the first drive magnet 1252a and the second drive magnet 1252b may have the other N pole or an S pole (e.g., an S pole). Here, the inner surface may be the surface adjacent to the optical axis, and the outer surface may be the surface farther from the optical axis. Furthermore, the first magnet 1252a may have a first pole on a first surface BSF1 facing the optical drive coil (e.g., the first coil). The first magnet 1252a may have a second pole on a second surface BSF2 opposite the first surface BSF1. The second magnet 1252b may have a first pole on a first face BSF1 that faces the optical drive coil (e.g., the second coil). The second magnet 1252b may have a second pole on a second face BSF2 that is the opposite face of the first face BSF1. The first pole may be either a north pole or a south pole. The second pole may be the other of a north pole and a south pole.

[0168] Alternatively, the first drive magnet and the second drive magnet may have a structure in which north poles / south poles or south poles / north poles are sequentially arranged along the optical axis direction.

[0169] The third subcoil SC1b and the fourth subcoil SC2b may be spaced apart from each other in the optical axis direction. The third subcoil SC1b and the fourth subcoil SC2b may be connected in parallel. For example, one of one end and the other end of the third subcoil SC1b may be connected to one of one end and the other end of the fourth subcoil SC2b at one node.

[0170] The first magnet 1252a and the second magnet 1252b can be disposed in the aforementioned grooves of the moving assembly 1222 and can be positioned to correspond to the first coil 1251a and the second coil 1251b. The optical drive magnet 1252 can then be coupled to the first and second lens assemblies (or moving assemblies) together with a yoke, which will be described later.

[0171] The yoke unit 1240 may be disposed on the substrate unit 1270. The yoke unit 1240 may form an attractive force with an adjacent magnet to maintain the orientation of the first and second lens assemblies. That is, the yoke unit 1240 may provide a holding force for the moving assembly. The yoke unit 1240 may include a first yoke unit 1241 and a second yoke unit 1242. The first yoke unit 1241 may be disposed on the first substrate 1271. The second yoke unit 1242 may be disposed on the second substrate 1272.

[0172] The base unit 1260 may be located between the lens unit 1220 and the image sensor in the circuit board. Components such as a filter may be fixed to the base unit 1260. The base unit 1260 may also be disposed to surround the image sensor. This configuration may prevent the image sensor from being contaminated by foreign matter, thereby improving the reliability of the device. However, this may be omitted in some of the following drawings.

[0173] 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 perform an auto focus function or a zoom function by moving the lenses in response to a control signal from a predetermined controller.

[0174] And the second camera actuator can be a fixed zoom or a continuous zoom. For example, the second camera actuator can provide movement of lens group 1221.

[0175] Furthermore, the second camera actuator may be composed of multiple lens assemblies. For example, in addition to the first lens assembly 1222a and the second lens assembly 1222b, the second camera actuator may be provided with at least one of a third lens assembly (not shown) and a guide pin (not shown). The above description may apply to this. As a result, the second camera actuator can perform a high-magnification zoom function through the driver.

[0176] The image sensor may be located inside or outside the second camera actuator. In an embodiment, as shown, 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 convert the received light into an electrical signal. The image sensor may also be configured as an array of a plurality of pixels. The image sensor may be located on the optical axis.

[0177] The substrate portion 1270 can be in contact with the side of the housing. For example, the substrate portion 1270 can be located on the outer surface of the first side (first side surface) and the outer surface of the second side (second side surface) of the housing, particularly the second-second housing, and can be in contact with the first side surface and the second side surface.

[0178] The second camera actuator may further include first stoppers ST1a, ST1b arranged at one end (or front end) within the housing (or 2-2 housing 1232) and second stoppers ST2a, ST2b arranged at the other end (or rear end).

[0179] 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 of the second housing or the main barrel 1232 in the opposite direction of the optical axis. As an example, the first stopper ST1 may be located on the inner wall or inner wall of the housing or the main barrel 1232. The first stopper ST1 may be located on a first inner wall of the first and second inner walls of the main barrel 1232 that face each other along the optical axis. The first stopper ST1 may also include a first stopper ST1a located on one side and a first stopper ST1b located on the other side. For example, the first stopper ST1a may be located on one side of the first inner wall, and the first stopper ST1b may be located on the other side of the first inner wall. The first stopper ST1a may be located adjacent to the first side, and the first stopper ST1b may be located adjacent to the second side. The terms "one side" and "other side" may refer to one side and the opposite side in the second direction.

[0180] Alternatively, the first-first stopper ST1a may overlap with the guide portion of the first lens assembly in the optical axis direction, and the first-second stopper ST1b may overlap with the lens protrusion portion of the first lens assembly in the optical axis direction.

[0181] In addition, the first stopper ST1 may further include first to third stoppers disposed on the other side of the main barrel 1232. The first to third stoppers may be positioned to overlap with the guide portion of the second lens assembly 1222b in the optical axis direction.

[0182] Also, the second stopper ST2 may be disposed at the other end of the second housing or the main barrel 1232. For example, the second stopper ST2 may be located at an end of the second housing or the main barrel 1232 in the optical axis direction. As an example, the second stopper ST2 may be located on the inner wall or inner wall of the housing or the main barrel 1232. The second stopper ST2 may be located on the second inner wall of the first and second inner walls of the main barrel 1232 that face each other along the optical axis direction. 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.

[0183] The second stopper ST2 may include a second stopper ST2a disposed on one side and a second stopper ST2b disposed on the other side. The second stopper ST2a may be located adjacent to the first side. The second stopper ST2b may be located adjacent to the second side. For example, the second stopper ST2a may be located on one side of the first inner wall. The second stopper ST2b may be located on the other side of the first inner wall.

[0184] 7 and 8, the electromagnetic force will be described below based on one coil. In the camera device according to this embodiment, an electromagnetic force DEM1 is generated between the first magnet 1252a and the first coil 1251a, and the first lens assembly 1222a can move along a rail located on the inner surface of the housing via the first ball B1 in a direction parallel to or in line with the optical axis, i.e., in the third direction (Z-axis direction) or in a direction opposite to the third direction. At this time, the first magnet 1252a and the second magnet 1252b do not move to the area facing the edges of the first and second sub-coils. Therefore, an electromagnetic force is generated based on the current flow in the adjacent areas of the first and second sub-coils.

[0185] As described above, in the camera device according to the embodiment, the first magnet 1252a may be attached to the first lens assembly 1222a using, for example, a unipolar magnetization method. For example, in the embodiment, the surface (first surface) facing the outer surface of the first magnet 1252a may be an S pole. The outer surface of the first magnet 1252a may be a surface facing the first coil 1251a. The surface opposite the first surface may be an N pole. As a result, only one of the N pole and the S pole may be positioned to face the first coil 1251a. Here, the description will be given based on the case where the outer surface of the first magnet 1252a is an S pole. Furthermore, the first coil 1251a may be composed of multiple sub-coils, and currents may flow in opposite directions in the multiple sub-coils. That is, the same current as "DE1" may flow in the region of the first sub-coil SC1a adjacent to the second sub-coil SC2a.

[0186] In other words, the first region of the first subcoil SC1a and the second region of the second subcoil SC2a may have the same current direction. The first region of the first subcoil SC1a overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction, and is a region arranged perpendicular to the optical axis direction (e.g., arranged along the first direction). The second subcoil S C The second region 2a overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction, and is a region arranged perpendicular to the optical axis direction (eg, arranged along the first direction).

[0187] Also, as shown in the figure, in this embodiment, when a magnetic force is applied from the south pole of the first magnet 1252a in the second direction (Y-axis direction) and a current DE1 flows from the first coil 1251a in the first direction (X-axis direction), an electromagnetic force DEM1 can act in the third direction (Z-axis direction) due to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0188] At this time, because the first coil 1251a is fixed to the side of the housing, the first lens assembly 1222a in which the first magnet 1252a is disposed can be moved in the opposite direction of the Z axis by the electromagnetic force DEM1 depending on the direction of the current. That is, the optical drive magnet can move in the opposite direction of the electromagnetic force applied to the optical drive coil. Furthermore, the direction of the electromagnetic force can be changed depending on the current in the coil and the magnetic force of the magnet.

[0189] As a result, the first lens assembly 1222a can move along the rail located on the inner surface of the housing through the first ball in the third direction or a direction parallel to the optical axis direction (positive direction). At this time, the electromagnetic force DEM1 can be controlled in proportion to the current DE1 applied to the first coil 1251a.

[0190] The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 in which the first ball or the second ball is mounted. The first lens assembly 1222a or the second lens assembly 1222b may also include a second recess RS2 in which the first ball or the second ball is mounted. The first recess RS1 and the second recess RS2 may be plural. The length of the first recess RS1 in the optical axis direction (Z-axis direction) may be preset. The length of the second recess RS2 in the optical axis direction (Z-axis direction) may also be preset. Accordingly, the movement distance of the first ball and the second ball in each recess in the optical axis direction may be adjustable. In other words, the first recess RS1 or the second recess RS2 may function as a stopper for the first and second balls.

[0191] In the camera device according to the embodiment, the second magnet 1252b may be provided to the second lens assembly 1222b by, for example, a single-pole magnetization method.

[0192] Furthermore, the first coil 1251a is made up of multiple sub-coils, and currents may flow in opposite directions in the multiple sub-coils. That is, the current may flow in the same direction as "DE1" in the area of ​​the first sub-coil SC1a adjacent to the second sub-coil SC2a.

[0193] In addition, in an embodiment, either the N pole or the S pole of the second magnet 1252b may be positioned to face the second coil 1251b. In an embodiment, the surface (first surface) facing the outer surface of the second magnet 1252b may be the S pole. Also, the first surface may be the N pole. The following description will be based on the first surface being the N pole as shown in the drawings.

[0194] Furthermore, the second coil 1251b is made up of multiple sub-coils, and currents may flow in opposite directions in the multiple sub-coils, i.e., currents may flow in the same direction as "DE2" in the area of ​​the first sub-coil SC1b adjacent to the second sub-coil SC2b.

[0195] In this embodiment, when a magnetic force DM2 is applied in the second direction (Y-axis direction) from the first surface (N-pole) of the second magnet 1252b, and a current DE2 flows in the first direction (X-axis direction) from the second coil 1251b corresponding to the N-pole, an electromagnetic force DEM2 can act in the third direction (Z-axis direction) due to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0196] At this time, because the second coil 1251b is fixed to the side of the housing, the second lens assembly 1222b, on which the second magnet 1252b is disposed, can move in the opposite direction of the Z-axis direction due to the electromagnetic force DEM2 depending on the direction of the current. For example, as described above, the direction of the electromagnetic force can be changed depending on the current in the coil and the magnetic force of the magnet. As a result, the second lens assembly 1222b can move along the rail located on the inner surface of the housing via the second ball B2 in a direction parallel to the third direction (Z-axis direction). At this time, the electromagnetic force DEM2 can be controlled in proportion to the current DE2 applied to the second coil 1251b.

[0197] 9, in the camera apparatus according to the embodiment, the driving unit can provide driving forces F3A, F3B, F4A, and F4B that move the first lens assembly 1222a and the second lens assembly 1222b of the lens unit 1220 along the third direction (Z-axis direction). As described above, this driving unit can include the optical driving coil 1251 and the optical driving magnet 1252. The lens unit 1220 can move along the third direction (Z-axis direction) due to the electromagnetic force generated between the optical driving coil 1251 and the optical driving magnet 1252.

[0198] In this case, the first coil 1251a and the second coil 1251b may be disposed in holes formed in the sides (e.g., the first side and the second side) of the housing 1230. The second coil 1251b may be electrically connected to the second board 1272. The first coil 1251a may be electrically connected to the first board 1271. As a result, the first coil 1251a and the second coil 1251b may receive a drive signal (e.g., a current) from a driver on the circuit board of the circuit board 1300 through the board unit 1270.

[0199] At this time, the first lens assembly 1222a to which the first magnet 1252a is attached can move along the third direction (Z-axis direction) due to electromagnetic forces F3A and F3B between the first coil 1251a and the first magnet 1252a. Also, the second lens group 1221b attached to the first lens assembly 1222a can move along the third direction.

[0200] Then, due to electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b, the second lens assembly 1222b to which the second magnet 1252b is attached can move along the third direction (Z-axis direction). Also, the third lens group 1221c attached to the second lens assembly 1222b can move along the third direction.

[0201] Accordingly, as described above, the focal length or magnification of the optical system can be changed by moving the second lens group 1221b and the third lens group 1221c. As an example, the magnification can be changed by moving the second lens group 1221b. In other words, zooming can be performed. Also, the focus can be adjusted by moving the third lens group 1221c. In other words, autofocusing can be performed.

[0202] Furthermore, 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.

[0203] By driving the first lens assembly, the first lens assembly 1222a can be positioned closest to the first stoppers ST1a and ST1b. At this time, the distance between the guide portion of the first lens assembly 1222a and the first stopper ST1a can be reduced. Also, the distance between the second stopper ST1b and the lens protrusion of the first lens assembly can be reduced.

[0204] That is, when the first lens assembly 1222a moves to its maximum extent toward the first camera actuator, it may collide with the 1-1 stopper ST1a and the 1-2 stopper ST1b. The 1-1 stopper and the 1-2 stopper may collide simultaneously or sequentially as the first lens assembly moves. In this embodiment, the 1-1 stopper and the 1-2 stopper may collide simultaneously as the first lens assembly moves.

[0205] As a result, even if a lens made of glass is disposed (e.g., at the front end) in the first lens assembly 1222a (or the second lens assembly), collisions at the maximum movement position of the first lens assembly 1222a (or the second lens assembly) can be minimized. In other words, the phenomenon of the lens being broken can be suppressed. For example, at least one of the first lens assembly and the second lens assembly can include a lens containing glass. The glass can be positioned at the outermost position in the first lens assembly or the second lens assembly.

[0206] Alternatively, in the event of a subsequent collision, the guide portion having a larger volume may absorb the impact primarily, thereby minimizing damage to the first lens assembly.

[0207] Similarly, the second-second stopper ST2b may collide with the second lens assembly 1222b. That is, when the second lens assembly 1222b moves to its maximum extent in the image sensor or optical axis direction, the second lens assembly 1222b may collide with the second-second stopper ST2b and the second-first stopper ST2a. As a result, even if a glass lens is disposed in the second lens assembly 1222b, the collision can be minimized at the maximum movement position (mecha position) of the first lens assembly 1222a. That is, the phenomenon of the lens being broken can be suppressed. The same applies to the modified example.

[0208] In other words, when the first lens assembly 1222a moves, the first-1 stopper ST1a and the first-2 stopper ST1b can contact the first lens assembly 1222a. When the first lens assembly 1222a moves to its maximum extent mecha-to-mecha, the first lens assembly 1222a can contact the first stoppers ST1a and ST1b. For example, the first lens assembly 1222a can move to the end in the optical axis direction or to the end in the opposite direction of the optical axis direction. At this time, the first lens assembly 1222a can move to a point where it contacts the first stopper or the second stopper. For example, the movement of the first lens assembly 1222a can place the camera module in a telephoto or wide-angle state. When the first lens assembly 1222a contacts the first stopper, it is in the wide-angle state, and when the first lens assembly 1222a contacts the second stopper, it is in the telephoto state. This can be changed in various ways by driving.

[0209] Such a first stopper can reduce the impact on the movement of the first lens assembly 1222a and the second lens assembly 1222b. This can improve the reliability of the first lens assembly 1222a and the second lens assembly 1222b and the reliability of the second and third lens groups inside, as described above. Furthermore, the movement range of the first lens assembly 1222a and the second lens assembly 1222b is limited, allowing for accurate driving of magnification, etc.

[0210] FIG. 10 is a perspective view of a part of the configuration of the second camera actuator according to the embodiment.

[0211] Referring to FIG. 10, the first lens assembly 1222a and the second lens assembly 1222b may be spaced apart in the optical axis direction (Z-axis direction).

[0212] The second guide portion may be disposed opposite 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). This configuration improves the space efficiency of the drive unit for moving the first and second lens assemblies within the second camera actuator, thereby facilitating miniaturization of the second camera actuator.

[0213] As described above, the first ball and the first coil may be arranged adjacent to each other in the first guide portion, and the second ball and the second coil may be arranged adjacent to each other in the second guide portion.

[0214] Also, according to an embodiment, the first and second lens assemblies 1222a and 1222b may each include a yoke YK1 and YK2 disposed on the side thereof.

[0215] The first yoke YK1 may be positioned on a side of the first lens assembly 1222a. The second yoke YK2 may be positioned on a side of the second lens assembly 1222b. At least a portion of the first yoke YK1 and the second yoke YK2 may extend outward. As a result, the first yoke YK1 may surround at least a portion of the side of the first magnet 1252a. As shown in the drawings, the first yoke YK1 may have various structures that surround the inner surface and a portion of the side of the first magnet 1252a. For example, the first yoke YK1 may be formed of divided members, and each divided member may be positioned on the inner surface and a portion of the side of the first magnet 1252a. As a result, the coupling force between the unipolar magnetized optical drive magnet and the yoke may be improved. Similarly, the second yoke YK2 may surround at least a portion of the side of the second magnet 1252b. As shown in the drawings, the second yoke YK2 may have various structures that surround the inner surface and a portion of the side of the second magnet 1252b. For example, the second yoke YK2 may be made up of divided members, each of which may be positioned on the inner surface and the side surface of the second magnet 1252b.

[0216] Additionally, the yoke can be positioned to couple to the optical drive coil as well as the optical drive magnet.

[0217] A plurality of balls may be positioned on the outer surfaces of the lens assemblies. As described above, the first ball may be positioned on the outer surface of the first lens assembly 1222a. The second ball may be positioned on the outer surface of the second lens assembly 1222b.

[0218] The first ball and the second ball may be plural. For example, the first ball may be plural and arranged in a row along the optical axis direction (Z-axis direction) in one recess of the first lens assembly 1222a. Also, the second ball may be plural and arranged in a row along the optical axis direction (Z-axis direction) in one recess of the second lens assembly 1222b.

[0219] For example, the second ball B2 may include a first sub-ball B2a, a second sub-ball B2b, and a third sub-ball B2c. The first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may be arranged side by side along the optical axis direction. This allows the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c to at least partially overlap one another in the optical axis direction.

[0220] The first and second sub-balls B2a and B2b may be located at the edges of the plurality of balls, and the third sub-ball B2c may be located between the first and second sub-balls B2a and B2b.

[0221] The balls may have the same or different diameters. For example, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may at least partially have the same diameters R1, R3, and R2. Alternatively, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have different diameters R1, R3, and R2.

[0222] In one embodiment, the diameters R1 and R3 of the balls located on the edges (first and second sub-balls) may be smaller than the diameter R2 of the innermost ball (third sub-ball) among the plurality of balls. For example, the diameters R1 and R3 of the first sub-ball B2a and the second sub-ball B2b may be smaller than the diameter R2 of the third sub-ball B2c. This configuration allows the lens assembly to move accurately using the plurality of balls without tilting to one side.

[0223] The explanation for the plurality of balls can be applied equally to the first ball.

[0224] As described above, the optically driven magnet may be a plurality of magnets, each consisting of a first magnet and a second magnet. The first magnet and the second magnet may face each other, with the same poles arranged on the outside. That is, the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet may have a first pole. The second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet may have a second pole.

[0225] FIG. 11 is a perspective view of a first lens assembly (or a second lens assembly) according to an embodiment, FIG. 12 is a front view of the first lens assembly (or a second lens assembly) according to an embodiment, FIG. 13 is a side view of the first lens assembly (or a second lens assembly) according to an embodiment, FIG. 14 is a rear view of the first lens assembly (or a second lens assembly) according to an embodiment, and FIG. 15 is another side view of the first lens assembly (or a second lens assembly) according to an embodiment.

[0226] 16a is a perspective view of a measuring device according to an embodiment, FIG. 16b is a side view of one side of the measuring device according to an embodiment, FIG. 16c is a side view of the other side of the measuring device according to an embodiment, FIG. 17a is a perspective view of a measuring ball, measuring device and first lens assembly according to an embodiment, FIG. 17b is a side view of FIG. 17a, FIG. 17c is a cutaway view of FIG. 17b, FIG. 17d is a view explaining a measurement method using the measuring device according to an embodiment, FIG. 17e is a view illustrating various shapes of lens assemblies according to an embodiment, and FIGS. 17f to 17h are views showing measurement methods using the measuring device according to an embodiment. FIG. 17i is a cross-sectional view and enlarged view of the second camera actuator according to the embodiment, FIG. 18 is yet another side view of the first lens assembly (or second lens assembly) according to the embodiment, FIG. 19 is a perspective view taken along line CC' in FIG. 18, FIG. 20 is a cross-sectional view taken along line CC' in FIG. 18, FIG. 21 is a view of FIG. 18 with the lens groups accommodated, FIG. 22 is a view of the first lens assembly and second lens assembly according to the embodiment, and FIG. 23 is a cross-sectional view taken along line EE' in FIG. 22.

[0227] Referring to FIG. 11, as described above, the first lens assembly 1222a and the second lens assembly 1222 b The lens assembly 1222a can move in the optical axis direction or the third direction (Z-axis direction). The following description will be based on the first lens assembly 1222a, but the description of the first lens assembly will be applied to the second lens assembly 1222a. b Furthermore, the first lens assembly 1222a and the second lens assembly 1222 b The first lens assembly 1222a and the second lens assembly 1222b are arranged side by side along the optical axis, and the guide portions of the first lens assembly 1222a and the second lens assembly 1222b are arranged on opposite sides of each other. b can be positioned in a flipped or corresponding configuration with respect to the optical axis.

[0228] At least one of the first lens assembly 1222a and the second lens assembly 1222b may include a lens holder (LAH1) for accommodating a lens, a guide portion GP, ​​and a lens protrusion portion LP. The following description will be given based on the first lens assembly 1222a as described above.

[0229] The receiving portion or first lens holder LAH1 includes a first lens hole LH1 (hereinafter referred to as the receiving portion LAH1). A lens may be disposed in the first lens hole LH1. That is, the first lens hole LH1 can receive a lens. In this case, there may be a plurality of lenses, and at least one of the lenses may be made of glass, for example.

[0230] Furthermore, the guide portion GP may contact the receiving portion LAH1, and a ball portion may be disposed thereon. As described above, the ball portion may include a first ball and a second ball. The first ball and the second ball may be positioned or attached to the first lens assembly 1222a and the guide groove. As a result, when a driving force (e.g., an electromagnetic force) is generated by the driving portion, the first lens assembly 1222a can move along the optical axis direction due to the rolling motion of the first ball and the second ball.

[0231] The lens protrusion LP is in contact with the housing portion LAH1 and can correspond to the guide portion GP.

[0232] In one embodiment, the guide portion GP may be located on one side or one lateral portion of the receiving portion LAH1, and the lens protrusion portion LP may be located on the other side or other lateral portion of the receiving portion LAH1. For example, the guide portion GP may be located on the opposite side of the receiving portion LAH1 from the lens protrusion portion LP.

[0233] Furthermore, the lens protrusion LP according to the embodiment may include a plate LP1 and a support portion LP2. The plate LP1 may be located at the front end of the support portion LP2. The support portion LP2 may be connected to the plate LP1 and located at the rear end of the plate LP1. Here, the front end refers to the end opposite to the optical axis direction, and the rear end refers to the end toward the optical axis direction.

[0234] 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). Furthermore, the thickness THb of the lens protrusion portion LP or the support portion LP2 may decrease along the optical axis. Here, the thickness corresponds to the length in the second direction (Y-axis direction). Furthermore, the length corresponds to the length in the third direction (Z-axis direction). This structure allows for easy removal while maintaining the support force for the plate LP1. In addition, the support force of the first pin groove located in the plate LP1 is improved, making it easier to maintain flatness during removal.

[0235] Furthermore, the length of the plate LP1 according to the embodiment may be shorter than the length of the support portion LP2, which can further improve the ease of removal and the support force.

[0236] Furthermore, the guide portion GP according to the embodiment may include a side plate GPa and wing portions GPb. The wing portions GPb may contact both the side plate GPa and the receiving portion LAH1. The thickness THa of the wing portions GPb may decrease along the optical axis direction. Furthermore, there may be a plurality of wing portions GPb. This configuration allows for easy removal while maintaining support for the side plate GPa. In addition, the support for the second pin grooves located in the side plate GPa is improved, making it easier to maintain flatness during removal.

[0237] Furthermore, a retainer RT1 may be located 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 their outer surfaces (first and second outer surfaces) facing each other. The retainer RT1 may be coupled to the first outer surface MM1 through a protrusion / groove structure. Furthermore, a bonding material including epoxy or the like may be applied to the first outer surface MM1. This may improve the bonding strength between the first outer surface MM1 and the retainer RT1. Such a retainer RT1 may prevent the lens located in the first lens hole LH1 from falling off. Furthermore, the first outer surface MM 1 A plurality of grooves or protrusions may be formed on the first lens assembly 1222a. In addition, a plurality of marks (e.g., grooves) may be positioned on the side of the first lens assembly 1222a in the first direction. The positions of the first and second lens assemblies can be recognized through the marks, and the recognition can be used to perform an inspection of the operation of the first and second lens assemblies.

[0238] 12 to 14, in an embodiment, the lens protrusion portion LP may include a first pin groove LPG disposed on the upper surface LPU of the plate LP1. The first pin groove LPG may be located at the center of the upper surface LPU of the plate LP1. For example, the first pin groove LPG may be located at a portion or line that bisects the upper surface LPU of the plate LP1 in the first direction (X-axis direction). Furthermore, the center LPM of the first pin groove LPG may be located on the line that bisects the upper surface LPU of the plate LP1 in the first direction (X-axis direction). The shape of the first pin groove LPG may be various shapes such as a circle or a block. For example, the shape of the first pin groove LPG may correspond to the shape of an ejector pin.

[0239] The first pin groove LPG may overlap with the support portion LP2 in the optical axis direction or the third direction (Z-axis direction). With this configuration, the flatness of the first lens assembly can be maintained even if a force is applied by the ejector pin to the first pin groove LPG to which the ejector pin is tightly attached for removal.

[0240] Additionally, the guide portion GP may include a second pin groove GPG disposed on the upper surface GPU of the guide portion GP. The second pin groove GPG may be plural. For example, the second pin groove GPG may include a 2-1 pin groove GPG1, a 2-2 pin groove GPG2, and a 2-3 pin groove GPG3. The 2-3 pin groove GPG3 may be located between the 2-1 pin groove GPG1 and the 2-2 pin groove GPG2. Furthermore, the 2-1 pin groove GPG1, the 2-2 pin groove GPG2, and the 2-3 pin groove GPG3 may overlap with each other along the first direction (X-axis direction).

[0241] The plurality of second pin grooves GPG may have the same separation distances Wc and Wd between adjacent second pin grooves, thereby allowing the force applied to the second pin grooves GPG to be applied uniformly to the guide portion, thereby suppressing warping of the guide portion.

[0242] Furthermore, according to the embodiment, the length Lb of the guide portion GP in the third direction may be greater than the length La of the lens protrusion portion LP in the third direction. Conversely, the length La of the lens protrusion LP may be less than the length Lb of the guide portion GP.

[0243] Furthermore, the upper surface GPU of the guide part GP may be located at the front end of the upper surface LPU of the lens protrusion part LP. Also, the lower surface GPB of the guide part GP may be located at the rear end of the lower surface LPB of the lens protrusion part LP. The length of the guide part GP in the first direction may be greater than the length of the lens protrusion part LP in the first direction. Thus, the length of the guide part GP in both the first and third directions may be greater than that of the lens protrusion part LP.

[0244] The number of second pin grooves GPG may be greater than the number of first pin grooves LPG according to the shapes of the guide portion GP and the lens protrusion portion LP. This configuration allows the straightness or flatness of the guide portion GP to be maintained even when force is applied to the second pin grooves GPG by an ejector pin. This allows the guide portion or the first lens assembly to move accurately along the Z-axis direction through the ball portion located in the recess of the guide portion GP. In other words, zooming or autofocusing moves along the optical axis, preventing twisting of the optical axis.

[0245] Furthermore, the first pin groove LPG and the second pin groove GPG may at least partially overlap. For example, the first pin groove LPG and the second pin groove GPG may overlap in the second direction (Y-axis direction). For example, the second-third pin groove GPG3 may overlap the first pin groove LPG in the second direction.

[0246] In addition, the first pin groove LPG can be located at the rear end of the second pin groove GPG, which can prevent warping due to differences in shape or size even when force is applied to the lens protrusion LP and the guide portion GP.

[0247] Furthermore, the wing portion GPb can overlap with the second pin groove GPG in the optical axis direction (Z-axis direction). For example, multiple wing portions GPb can overlap with each of multiple second pin grooves GPG in the optical axis direction. With this configuration, even if force is applied by the ejector pin to the second pin groove to which the ejector pin is tightly attached for removal, the flatness of the first lens assembly, particularly the flatness of the guide portion GP in which the ball is disposed, can be maintained.

[0248] In addition, the center of multiple second pin grooves GPG (e.g., the center of the second and third pin grooves )and The center LPM of the first pin groove LPG can be positioned on a virtual line parallel to or aligned with the second direction (Y-axis direction), thereby preventing the guide part GP from warping toward either the top or bottom due to the force applied to the ejector pin during removal.

[0249] With additional reference to FIG. 15, according to an embodiment, the side plate GPa of the guide part GP includes a first area A1, a second area A2 and a third area A3.

[0250] The third region A3 is disposed between the first region A1 and the second region A2, and the first region A1, the third region A3, and the second region A2 may be sequentially positioned in a direction opposite to the first direction.

[0251] The first region A1 may include a first recess RS1, and the second region A2 may include a second recess RS2, in which a first ball and a second ball may be mounted, respectively.

[0252] Furthermore, a driving yoke may be disposed in the third region A3. A first magnet may be mounted on the driving yoke. The driving yoke may be mounted in the third region A3 and coupled to the guide portion GP. For example, the driving yoke may be coupled to the side plate GPa. To this end, a yoke hole A3h or a coupling protrusion A3p may be further disposed in the third region A3. The side plate GPa and the driving yoke may be coupled to each other through the yoke hole A3h or the coupling protrusion A3p. Additionally, a bonding material (e.g., epoxy, etc.) may be applied to the third region A3.

[0253] 16a to 16c and 17a to 17b, the measuring device 3000 according to the embodiment includes a body 3100, a first protrusion 3200, and a second protrusion 330. 0 may include:

[0254] The body 3100 may be elongated in one direction. The body 3100 may be extended to have a length longer than the length of the lens assembly in the second camera actuator in the optical axis direction. Furthermore, the body 3100 may include a rail portion 3100r formed on one surface. A ball TB for measurement may be attached to the rail portion 3100r. The ball TB may contact the first and second lens assemblies (hereinafter, the first lens assembly 1222a or the lens assembly 1222a will be described as a reference) of the second camera actuator for measurement. For example, the ball TB may be located between the first and second lens assemblies and the body 3100.

[0255] The rail portion 3100r may include a first rail 3100r1 and a second rail 3100r2. The first rail 3100r1 and the second rail 3100r2 may be spaced apart from each other. Furthermore, the first rail 3100r1 and the second rail 3100r2 may be positioned to correspond to the first and second recesses of the lens assembly 1222a. The distance between the first rail 3100r1 and the second rail 3100r2 may correspond to the distance between the first and second recesses.

[0256] Furthermore, the first rail 3100r1 and the second rail 3100r2 may have grooves of various shapes. For example, the first rail 3100r1 and the second rail 3100r2 may have grooves of the same shape. Alternatively, the first rail 3100r1 and the second rail 3100r2 may have grooves of different shapes. For example, the first rail 3100r1 and the second rail 3100r2 may all have V-shaped grooves. Alternatively, the first rail 3100r1 may be V-shaped and the second rail 3100r2 may be hemispherical. Furthermore, the first rail 3100r1 and the second rail 3100r2 may have multiple contact points with the ball TB. This allows the first rail 3100r1 and the second rail 3100r2 to have the same number of contact points with the ball TB. Alternatively, the first rail 3100r1 and the second rail 3100r2 may have different numbers of contact points with the ball TB.

[0257] As such, 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 structured shapes at the contact points with the ball TB.

[0258] The first protrusion 3200 may be a structure extending outward from one surface of the body 3100. The first protrusion 3200 may be a region extending perpendicularly from the body 3100.

[0259] 2nd protrusion 3 3 00 may be a structure extending outward from the other surface of the body 3100. 3 00 may be a region extending in a vertical direction from the fuselage 3100.

[0260] First protrusion 3 2 00 and second protrusion 3 3 00 can be extended in opposite directions. 2 00 and second protrusion 3 3 00 may at least partially overlap each other along the extension direction.

[0261] 2nd protrusion 3 3 For example, the second protrusion 300 can be located in the area between the rail portions 3100r. 3 00 can be located in the area between the first rail 3100r1 and the second rail 3100r2.

[0262] Furthermore, the second protrusion 3 3 The second protrusion 300 may be located on the same surface as the surface (other surface) on which the rail portion 3100r is disposed in the body 3100. 3 00 can support the lens assembly 1222a to be measured. As described above, the ball TB is mounted in the first and second recesses of the lens assembly and can move along the rail portion 3100r. This allows the guide portion of the lens assembly to be positioned facing the other surface of the body 3100. At this time, the second protrusion 3 3 3100 and body 3100 are positioned perpendicular to each other so that the warpage of the lens assembly can be measured more accurately.

[0263] Furthermore, the body 3100 may include at least one hole 3100h. A lens assembly attached to the other surface of the body 3100 can be pressed toward the body 3100 through the at least one hole 3100h. That is, when measuring the warpage of the lens assembly, a coupling force between the lens assembly and the measuring device can be maintained.

[0264] 17c to 17h, a first lens assembly 1222a according to an embodiment may have a lens disposed in a lens hole, and the lens hole may have a step for accommodating the lens. A measurement method according to an embodiment may include the steps of disposing a first lens assembly in a measurement device, calculating a central axis of the lens hole of the first lens assembly, and calculating an axial tilt angle of the first lens assembly based on the calculated central axis of the lens hole.

[0265] First, the first lens assembly can be placed in the measurement device. As described above, the first lens assembly 1222a can be placed so that the end of the guide portion is supported on the second protrusion 3300. The measurement target is the lens assemblies (first and second lens assemblies). In addition, a ball placed on the rail portion can be brought into contact with the guide portion of the first lens assembly 1222a.

[0266] Then, 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 using a contact or non-contact method. For example, in the case of a non-contact method, the central axis of the lens hole can be calculated through vision recognition, etc. For example, center points PO1 and PO2 can be calculated within the lens hole based on the inner surface of the lens hole or the outer diameter of the member (e.g., lens) accommodated in the lens hole. For example, the center points can correspond to the midpoint of each circular lens or the midpoint of the circular lens hole.

[0267] For example, the centers of two lenses or the midpoints of the inner diameters of two lens holes can be calculated, for example, a first point PO1 and a second point PO2 can be calculated.

[0268] 17d, the first point PO1 may correspond to the center of the first containing lens PL1, and the second point PO2 may correspond to the center of the second containing lens PL2.

[0269] The central axis of the lens hole (e.g., optical axis, axis) can be calculated using the first point PO1 and the second point PO2. In Figures 17c to 17h, the axes are described as x, y, and z. In Figures 17c to 17h, the x-axis corresponds to the opposite direction (or second direction) of the second direction (Y-axis direction) described above, the y-axis corresponds to the first direction (X-axis direction) (or the opposite direction of the first direction), and the z-axis corresponds to the opposite direction (or third direction) of the third direction (Z-axis direction).

[0270] The first point PO1 and the second point PO2 can be calculated by selecting each measurement point of the lens hole through vision recognition. For example, the first point PO1 can be calculated by inputting the edge (e.g., point, reference coordinate) at the upper inner surface of the lens hole. The second point PO2 can be calculated by inputting the edge (e.g., point, reference coordinate) at the lower inner surface of the lens hole.

[0271] Accordingly, the first point PO1 and the second point PO2 can be calculated as coordinates (e.g., x1, y1, z1, etc.) in three-dimensional space, and the central axis (e.g., optical axis) of the lens hole can be calculated using the first point PO1 and the second point PO2.

[0272] 17e, in case (A), the upper surface LAHus of the receiving portion of the first lens assembly 1222a may be perpendicular to the outer surface GPs of the guide portion, and in this case, the optical axis of the lens hole of the receiving portion may be aligned with the optical axis direction described above.

[0273] However, due to the asymmetric structure of the first lens assembly 1222a, the lens holes of the first lens assembly 1222a may be twisted to one side. As a result, as shown in (B), the upper surface LAHus of the receiving portion of the first lens assembly 1222a may not be perpendicular to the outer surface GPs of the guide portion. As shown in (A), θy is 90 degrees, but in (B), θy may not be 90 degrees.

[0274] The tilt of the first lens assembly 1222a due to the twist of the first lens assembly 1222a in the x, y, and z directions can be calculated. Then, as will be described later, the length of the adjustment member can be adjusted according to the tilt of the first lens assembly, so that the axes (central axes, optical axes) of the lenses in the lens holes can be aligned in the third direction.

[0275] That is, the axis-specific tilt angle of the first lens assembly can be calculated based on the calculated central axis of the lens hole.

[0276] As shown in FIGS. 17f to 17h, the position of each of the x, y, and z axes is set to "0," and the tilt angle of each axis with respect to the xy, yz, and zx planes can be calculated.

[0277] For example, the plane tangent to the ball may be the plane where x = 0. As mentioned above, the imaginary line connecting the first and second points at the centers (midpoints) of the two lenses (first and second lens elements) may be the optical axis.

[0278] The optical axis can satisfy the following equation 1 with respect to x, y, and z:

[0279] [Formula 1]

[0280] TIFF2025529243000049.tif1676

[0281] Here, a, b, and c are measurable constant values ​​that can be calculated using points 1 and 2. For example, a, b, and c can be calculated by applying the value of point 2 PO2.

[0282] That is, through Equation 2, a, b, and c that satisfy this can be derived.

[0283] In other words, the equation of a line passing through two points, 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 and second points, and the aforementioned a, b, and c can also be calculated.

[0284] [Formula 2]

[0285] TIFF2025529243000050.tif1875

[0286] Also, in equations 1 and 2, the first point PO1 may be (x3, y3, z3), and the second point PO2 may be (x4, y4, z4).

[0287] Furthermore, after a, b, and c are calculated (after the equation for the optical axis is calculated), x4, y4, and z4 can be substituted for x3, y3, and z3 in Equation 1. Furthermore, other coordinates on the optical axis can be substituted for x3, y3, and z3 in Equation 1.

[0288] First, θy can be calculated by projecting a plane where y=0, as shown in FIG. 17g. That is, the y component can be removed, and the tilt of the line (optical axis) can be calculated by projecting onto the xz plane based on y=0. In this case, each angle (θx, θy, θz) represents the angle of rotation or tilt based on each axis (x, y, z). For example, angle (θx) represents the angle of rotation or tilt of the first lens assembly based on the x-axis. In other words, θz represents the tilt angle of the first lens assembly or lens hole based on the z-axis. θy represents the tilt angle based on the y-axis. θx represents the tilt angle based on the x-axis.

[0289] Next, by substituting y=0 into Equation 1, the following Equation 3 is derived, and finally, θy can be calculated as Equation 6 through Equation 4.

[0290] [Formula 3]

[0291] TIFF2025529243000051.tif1876

[0292] [Formula 4]

[0293] TIFF2025529243000052.tif1979

[0294] [Formula 5]

[0295] TIFF2025529243000053.tif1884

[0296] Similarly, θz can be calculated by projecting the plane where z=0, as in FIG. 17f.

[0297] For example, if z=0 is substituted into Equation 1, the following Equation 6 is derived, and θz can finally be calculated as in Equation 7.

[0298] [Formula 6]

[0299] TIFF2025529243000054.tif2176

[0300] [Formula 7]

[0301] TIFF2025529243000055.tif2179

[0302] Similarly, θx can be calculated by projecting the plane where x=0 as in FIG. 17h.

[0303] For example, if x = 0 is substituted into Equation 1, the following Equation 8 is derived, and θx can finally be calculated as in Equation 9.

[0304] [Formula 8]

[0305] TIFF2025529243000056.tif2280

[0306] [Formula 9]

[0307] TIFF2025529243000057.tif1984

[0308] In addition, since the first lens assembly according to the embodiment is yz-symmetrical with respect to the x, y, and z axes, there is a possibility that the torsion is small with respect to the yz plane. In other words, when reflecting an asymmetric structure, the first lens assembly (or lens hole) according to the embodiment is likely to tilt in the second direction (Y-axis direction).

[0309] 17i, in some embodiments, the upper surface LAHus of the receiving portion of the first lens assembly 1222a may be offset from the outer surface GPs of the guide portion. The upper surface LAHus of the receiving portion of the first lens assembly 1222a may be non-perpendicular to the outer surface GPs of the guide portion.

[0310] Furthermore, the upper surface LAHus of the accommodation portion LAH and the outer surface GPs of the guide portion GP adjacent to the ball portion are arranged to be offset from each other, and the first angle θ A can be formed.

[0311] The upper surface LAHus of the receiving portion and the plane perpendicular to the axis AX1 of the lens group 1221b arranged in the lens hole may be offset from each other. The upper surface LAHus of the receiving portion and the plane perpendicular to the axis AX1 of the lens group 1221b arranged in the lens hole may be offset from each other by a second angle θ B can be formed.

[0312] 1st angle θ A and the second angle θ B As an example, the first angle θ A and the second angle θ B are similar to each other and can form an error range within 10%.

[0313] Furthermore, the axis AX1 of the lens group 1221b can be aligned with the optical axis (Z-axis direction) because the adjustment member (described later) tilts the lens group in a direction that compensates for the axis of the lens hole. That is, the axis of the lens hole can be misaligned with the axis AX1 of the lens group.

[0314] In addition, the upper surface LAHus of the receiving portion may include a first end EP1 located on one side in a direction perpendicular to the optical axis direction (e.g., a second direction (Y-axis direction)) and a second end EP2 located on the other side.

[0315] The upper surface of the lens group 1221b may include a third end EP3 located on one side in a direction perpendicular to the optical axis direction (e.g., the second direction (Y-axis direction)) and a fourth end EP4 located on the other side.

[0316] A separation distance gap1 between the first end EP1 and the second end EP2 in the optical axis direction (Z-axis direction) may be greater than a separation distance gap2 between the third end EP3 and the fourth end EP4 in the optical axis direction. The third end EP3 and the fourth end EP4 may at least partially overlap each other in the second direction. As a result, the separation distance between the third end EP3 and the fourth end EP4 in the optical axis direction may be zero or very small.

[0317] Furthermore, the first end EP1 may be located closer to the front end than the second end EP2. For example, the first end EP1 may be located closer to the first camera actuator than the second end EP2. Also, the second end EP2 may be located closer to the image sensor than the first end EP1.

[0318] The third end EP3 and the fourth end EP4 may be spaced the same distance from the image sensor.

[0319] Furthermore, the separation distance GAP3 between the upper surface LAHus of the accommodation portion and the first end portion EP1 in the optical axis direction (Z-axis direction) is H The distance between us and the second end EP2 in the optical axis direction (Z-axis direction) may be greater than gap4.

[0320] 18 to 20, the first lens assembly 1222a may further include a plurality of adjustment members. For example, the first lens assembly 1222a may include a first adjustment member DT1, a second adjustment member DT2, and a third adjustment member DT3.

[0321] The plurality of adjustment members DT1 to DT3 may be disposed on the bottom surface BS1 of the accommodation portion LAH1. The plurality of adjustment members DT1 to DT3 may extend from the bottom surface BS1 of the accommodation portion LAH1 toward the lenses accommodated in the accommodation portion. Alternatively, the plurality of adjustment members DT1 to DT3 may be disposed between a lens group (e.g., the second lens group) in the accommodation portion LAH1 and the bottom surface BS1. As an example, the plurality of adjustment members DT1 to DT3 may be protrusions disposed or formed on the bottom surface BS1 of the accommodation portion LAH1. The plurality of adjustment members DT1 to DT3 may be disposed spaced apart from one another.

[0322] For example, the first adjustment member DT1 may extend from the bottom surface BS1 of the receiving portion LAH1 toward the second lens group, or may extend in the optical axis direction.

[0323] In one embodiment, the first adjustment member DT1 may be positioned on a first imaginary 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 imaginary line VL1 may be a line that bisects the length of the first lens assembly 1222a in a second direction. The first imaginary line VL1 may be aligned with the second direction.

[0324] In one embodiment, the first adjustment member DT1 may be positioned at the center of the length of the first lens assembly 1222a in the second direction. The first adjustment member DT1 may be disposed on the first virtual line VL1. With this configuration, the first lens assembly 1222a may have an asymmetric structure on the left or right side of the center, so that even if the guide portion warps to one side during removal, the optical axis or center of the first lens assembly 1222a may be compensated. That is, the first lens assembly 1222a may have an asymmetric structure with respect to the second virtual line VL2 and a symmetric structure with respect to the first virtual line VL1. The first lens assembly 1222a may contract to the right 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 asymmetric structure may cause the optical axis to twist more significantly. The camera actuator and first lens assembly according to this embodiment can compensate for the optical axis twist caused by the warped structure due to such an asymmetric structure. The second virtual line VL2 may be a bisector of the length of the receiving portion LAH1 in the second direction (Y-axis direction).

[0325] For example, the concentricity of the first lens assembly 1222a may be increased by the asymmetric structure described above, thereby compensating for the concentricity of the lens through the adjustment member by the amount of twist caused by the asymmetric structure.

[0326] The first adjustment member DT1 may be spaced apart from the second adjustment member DT2, and the first adjustment member DT1 and the second adjustment member DT2 may be spaced apart from the third adjustment member DT3.

[0327] The second adjustment member DT2 and the third adjustment member DT3 other than the first adjustment member DT1 may not be disposed on the first imaginary line VL1, that is, the second adjustment member DT2 and the third adjustment member DT3 other than the first adjustment member DT1 may be disposed offset from the first imaginary line VL1.

[0328] As a result, the second and third adjustment members DT2 and DT3 can compensate for warpage of the first lens assembly 1222a in the first and third directions, but not in the second direction (Y-axis direction). Furthermore, it is possible to minimize the offset of the warpage compensation through the first adjustment member DT1.

[0329] As an example, the multiple adjustment members DT1 to DT3 may have the same or different lengths in the optical axis direction. In particular, the first adjustment member DT1 and the second adjustment member (or the third adjustment member) may have different lengths in the optical axis direction.

[0330] For example, the length HE1 of the first adjustment member DT1 in the optical axis direction may be greater than the length HE2 of the second adjustment member DT2 in the optical axis direction.

[0331] In particular, the first adjustment member DT1 may be disposed adjacent to the lens protrusion LP. The first adjustment member DT1 may be disposed adjacent to the lens protrusion LP of the second or third adjustment member. The second adjustment member DT2 (or the third adjustment member) may be disposed adjacent to the guide portion GP of the first adjustment member. Alternatively, the first adjustment member DT1 may be located adjacent to one side of the housing. For example, the first adjustment member DT1 may be located adjacent to the second side of the housing. And the guide portion GP may be located adjacent to the first side. Furthermore, the first adjustment member DT1 may be located on the side opposite the side where the ball portion is located. Alternatively, the first adjustment member DT1 may be located on the side opposite the first drive portion.

[0332] As an example, among the adjusting members, the first adjusting member DT1 adjacent to the lens protrusion LP relative to the guide portion GP may be longer in the optical axis direction than the other adjusting members. In other words, the first adjusting member DT1 adjacent to the lens protrusion LP, which has a relatively small volume and weight (compared to the guide portion), may be longer in the optical axis direction than the other adjusting members in the first lens assembly 1222a, rather than the guide portion GP, ​​which has a large volume and weight. With this configuration, even if the receiving portion LAH1 and the lens protrusion LP are warped toward the guide portion GP due to the guide portion GP, ​​the extended structure of the first adjusting member DT1 can align the center of the second lens group. In other words, the center of the lens group due to the warped structure can be compensated for.

[0333] 21, the first lens assembly 1222a according to the embodiment may include a first lens PL1 and a second lens PL2 arranged sequentially along the optical axis (Z-axis) direction in the receiving portion LAH1. In addition, the second lens group 1221b may include lenses other than the first lens PL1 and the second lens PL2.

[0334] For example, the first receiving lens PL1 may include a first outer lens surface M1 adjacent to the lens protrusion LP and a second outer lens surface M2 adjacent to the guide portion GP.

[0335] The second housing lens PL2 may include a third lens outer surface M3 adjacent to the lens protrusion LP and a fourth lens outer surface M4 adjacent to the guide portion GP.

[0336] The first lens outer surface M1 and the second lens outer surface M2 may partially overlap in the second direction. Alternatively, the first lens outer surface M1 and the second lens outer surface M2 may not partially overlap in the second direction. As an example, the first lens outer surface M1 may have a region NOV1 that is offset from the second lens outer surface M2 in the second direction.

[0337] In addition, the third lens outer surface M3 and the fourth lens outer surface M4 may partially overlap in the second direction. Also, the third lens outer surface M3 and the fourth lens outer surface M4 may not partially overlap in the second direction. As an example, the third lens outer surface M3 may have a region NOV2 that is offset from the fourth lens outer surface M4 in the second direction.

[0338] Furthermore, the maximum distances from the center of the housing portion LAH1 to the first lens outer surface M1 and the second lens outer surface M2 may be different from each other, based on the center of the housing portion LAH1. For example, the maximum distance from the center of the housing portion LAH1 to the first lens outer surface M1 may be different from the maximum distance from the center of the housing portion LAH1 to the second lens outer surface M2. In one embodiment, since the length of the first adjustment member DT1 is greater than the length of the other adjustment members, the maximum distance from the center of the housing portion LAH1 to the first lens outer surface M1 may be smaller than the maximum distance from the center of the housing portion LAH1 to the second lens outer surface M2.

[0339] Similarly, the maximum distances from the center of the housing portion LAH1 to the third lens outer surface M3 and the fourth lens outer surface M4 may be different. For example, the maximum distance from the center of the housing portion LAH1 to the third lens outer surface M3 may be different from the maximum distance from the center of the housing portion LAH1 to the fourth lens outer surface M4. In one embodiment, because the length of the first adjustment member DT1 is greater than the lengths of the other adjustment members, the maximum distance from the center of the housing portion LAH1 to the third lens outer surface M3 may be smaller than the maximum distance from the center of the housing portion LAH1 to the fourth lens outer surface M4.

[0340] 22 and 23, the above description of the first lens assembly and second lens group can be equally applied to the second lens assembly and third lens group. Hereinafter, as shown in the drawings, the guide portion of the second lens assembly 1222b will be referred to as GP', the lens protrusion portion of the second lens assembly 1222b will be referred to as LP', and the receiving portion of the second lens assembly 1222b will be referred to as LAH1'. Furthermore, the first adjustment member disposed on the bottom surface of the receiving portion LAH1' of the second lens assembly 1222b will be referred to as DT1'.

[0341] More specifically, the guide portion GP of the first lens assembly 1222a may 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 may be positioned adjacent to the first side of the housing. That is, the distance between the guide portion GP of the first lens assembly 1222a and the first side of the housing may be smaller than the distance between the guide portion GP of the first lens assembly 1222a and the second side of the housing.

[0342] Conversely, the guide portion GP′ of the second lens assembly 1222b may be positioned adjacent to the second side of the housing, i.e., the distance between the guide portion GP′ of the second lens assembly 1222b and the second side of the housing may be smaller than the distance between the guide portion GP′ and the first side of the housing.

[0343] In addition, the lens protrusion LP of the first lens assembly 1222a may be positioned to face the lens protrusion LP' of the second lens assembly 1222b. 1R The lens protrusion LP of the second lens assembly 1222a can be positioned adjacent to the second side of the housing, and the lens protrusion LP′ of the second lens assembly 1222b can be positioned adjacent to the first side of the housing.

[0344] The first adjusting member DT1 of the first lens assembly 1222a and the first adjusting member DT1' of the second lens assembly 1222b may be arranged offset from each other. For example, the first adjusting member DT1 of the first lens assembly 1222a and the first adjusting member DT1' of the second lens assembly 1222b may be arranged offset from each other in the optical axis direction (Z-axis direction). Furthermore, the first adjusting member DT1 of the first lens assembly 1222a may be arranged adjacent to a second side of the first adjusting member DT1' of the second lens assembly 1222b.

[0345] 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. The first adjustment member DT1 of the first lens assembly 1222a and the first adjustment member DT1' of the second lens assembly 1222b may all extend along the optical axis. For example, the first adjustment member DT1 of the first lens assembly 1222a may extend from the bottom of the receiving 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 of the receiving portion LAH' toward the image sensor or the base. Furthermore, the distance between the bottom of the receiving portion of the first lens assembly 1222a and the bottom of the receiving portion of the second lens assembly 1222b may be smaller 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. Conversely, 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 may be greater than the separation distance between the bottom surface of the receiving portion of the first lens assembly 1222a and the bottom surface of the receiving portion of the second lens assembly 1222b.

[0346] For example, the first adjustment member DT1 of the first lens assembly 1222a may be disposed adjacent to the lens protrusion LP of the first lens assembly 1222a, and the first adjustment member DT1 of the first lens assembly 1222a may be disposed adjacent to the lens protrusion LP' and the lens guide portion GP' of the second lens assembly 1222b.

[0347] The first adjustment member DT1' of the second lens assembly 1222b may be disposed adjacent to the lens protrusion LP of the second lens assembly 1222b, and the first adjustment member DT1' of the second lens assembly 1222b may be positioned adjacent to the lens protrusion LP contrast guide portion GP of the first lens assembly 1222a.

[0348] Furthermore, the first adjustment member DT1 of the first lens assembly 1222a may be positioned adjacent to one side of the housing. The first adjustment member DT1' of the second lens assembly 1222b may be positioned adjacent to the other side of the housing. For example, the first adjustment member DT1 of the first lens assembly 1222a may be positioned adjacent to the second side of the housing. The first adjustment member DT1' of the second lens assembly 1222b may be positioned adjacent to the first side of the housing.

[0349] The guide portion GP of the first lens assembly 1222a may be positioned adjacent to the first side, and the guide portion GP' of the second lens assembly 1222b may be positioned adjacent to the second side.

[0350] In addition, the first adjustment member DT1 of the first lens assembly 1222a may be located on the opposite side of the side where the ball portion in contact with or connected to the first lens assembly 1222a is located, and the first adjustment member DT1' of the second lens assembly 1222b may be located on the opposite side of the side where the ball portion in contact with or connected to the second lens assembly 1222b is located.

[0351] For example, the first adjustment member DT1 of the first lens assembly 1222a can be positioned adjacent to the second ball versus the first ball, and the first adjustment member DT1' of the second lens assembly 1222b can be positioned adjacent to the first ball versus the second ball.

[0352] In addition, the first adjustment member DT1 of the first lens assembly 1222a may be located on the opposite side to the first driving unit, and the first adjustment member DT1' of the second lens assembly 1222b may be located on the opposite side to the second driving unit.

[0353] For example, the first adjustment member DT1 of the first lens assembly 1222a may be positioned adjacent to the first actuator relative to the second actuator, and the first adjustment member DT1' of the second lens assembly 1222b may be positioned adjacent to the second actuator relative to the first actuator.

[0354] In this manner, 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 adjacent to the lens protrusion portion rather than the guide portion of each lens assembly. This configuration can compensate for optical errors that occur due to the asymmetric structure of each lens assembly. That is, the camera actuator according to this embodiment can perform optical compensation due to the asymmetric structure.

[0355] FIG. 24 is a cross-sectional view of the second camera actuator according to the embodiment, and FIG. 25 is an enlarged view of the P portion in FIG.

[0356] 24 and 25, in the second camera actuator, the first yoke YK1 may be disposed adjacent to the first coil 1251a, and the second yoke YK2 may be disposed adjacent to the second coil 1251b. The first yoke YK1 may be disposed adjacent to the first magnet 1252a, and the second yoke YK2 may be disposed adjacent to the second magnet 1252b.

[0357] Furthermore, the first and second magnets 1252a may include a first pole region (north or south pole), a second pole region (south or north pole), and neutral regions NA1 and NA2. The neutral regions NA1 and NA2 may be disposed between the first and second pole regions. Furthermore, the first pole region, neutral region, and second pole region of the first magnet 1252a may be disposed sequentially in the optical axis direction. Similarly, the first pole region, neutral region, and second pole region of the second magnet 1252b may be disposed sequentially in the optical axis direction. Furthermore, the first pole region of the first magnet 1252a and the second magnet 1252b may be a north pole. Furthermore, the second pole region of the first magnet 1252a and the second magnet 1252b may be a south pole. The opposite is also true.

[0358] For example, the first lens assembly 1222a may provide minimum magnification when adjacent to the image sensor or moved maximum along the third direction (Z-axis direction). The first lens assembly 1222a may provide maximum magnification when moved maximum toward the first camera actuator or in the direction opposite the third direction. At these minimum and maximum magnifications, the second lens assembly may be positioned in various ways for autofocus.

[0359] First, the second camera actuator may further include first stoppers ST1a, ST1b disposed at one end or the front end within the second housing (or 2-2 housing 1232) and second stoppers ST2a, ST2b disposed at the other end.

[0360] The first stopper may include a first stopper ST1a disposed on one side and a first stopper ST1b disposed on the other side. The second stopper may include a second stopper ST2a disposed on one side and a second stopper ST2b disposed on the other side. One side and the other side may refer to one side and the opposite side in the second direction. The first stopper ST1a may overlap with the second stopper ST2a in the optical axis direction. The first stopper ST1b may overlap with the second stopper ST2b in the optical axis direction.

[0361] Furthermore, as the first lens assembly 1222a is driven, it can be positioned closest to the first stoppers ST1a and ST1b. In this case, the distance dL1 between the guide portion GP and the first-first stopper ST1a of the first lens assembly 1222a may be smaller than the distance dL2 between the first-second stopper ST1b and the lens protrusion LP of the first lens assembly. That is, even when the first lens assembly 1222a moves to its maximum position toward the first camera actuator, the first lens assembly 1222a may collide with the first-first stopper ST1a first and then with the first-second stopper ST1b. Therefore, even if a glass lens (e.g., the front end) is disposed within the first lens assembly 1222a, collisions can be minimized at the maximum movement (mecha position) of the first lens assembly 1222a. In other words, lens breakage can be prevented. Furthermore, the guide portion, which has a large volume, primarily absorbs impacts, minimizing damage to the first lens assembly.

[0362] Similarly, the distance dL3 between the 2-2 stopper ST2b and the guide portion GP of the second lens assembly 1222b may be smaller than the distance dL4 between the 2-1 stopper ST2a and the lens protrusion portion LP of the second lens assembly 1222b.

[0363] That is, even when the second lens assembly 1222b moves to its maximum in the image sensor or optical axis direction, it may collide with the second-second stopper ST2b first, and then with the second-first stopper ST2a. As a result, even if a glass lens is disposed in the second lens assembly 1222b, the collision can be minimized at the maximum movement (mecha position) of the first lens assembly 1222a. In other words, the phenomenon of the lens being broken can be suppressed. Furthermore, the guide portion, which has a large volume, primarily absorbs the impact, minimizing damage to the second lens assembly.

[0364] FIG. 26 is a schematic diagram illustrating a circuit board according to an embodiment.

[0365] 26, as described above, the circuit board 1300 according to this embodiment may include a first circuit board unit 1310 and a second circuit board unit 1320. The first circuit board unit 1310 may be located below the base and coupled to the base. An image sensor IS may be disposed on the first circuit board unit 1310. The first circuit board unit 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 circuit board (first circuit board unit) may be located at the rear end of the base. The base may include a filter (e.g., infrared). The circuit board 1300 may include the image sensor and sensor base described above.

[0366] The second circuit board unit 1320 may be located on a side of the base. In particular, the second circuit board unit 1320 may be located on a first side of the base. As a result, the second circuit board unit 1320 may be located adjacent to the first coil located adjacent to the first side, thereby facilitating electrical connection. The second circuit board unit 1320 may also be located on the second side. In this manner, there may be a plurality of second circuit board units 1320. However, the present invention is not limited thereto, and the second circuit board unit 1320 may be located on only one of the first side or the second side.

[0367] Furthermore, the circuit board 1300 may further include a fixed substrate (not shown) located on the side thereof, so that even if the circuit board 1300 is made of a flexible material, it can be coupled to the base while maintaining rigidity due to the fixed substrate.

[0368] The second circuit board portion 1320 of the circuit board 1300 may be located on the side of the driver 1250. The circuit board 1300 may be electrically connected to the first driver and the driver. For example, the electrical connection may be made by SMT, but is not limited to this method.

[0369] The circuit board 1300 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), a rigid flexible printed circuit board (Rigid Flexible PCB), etc. However, it is not limited to these types.

[0370] In addition, the circuit board 1300 may be electrically connected to other camera modules or a processor of the terminal within the terminal, so that the camera actuator and the camera module including the same can transmit and receive various signals within the terminal.

[0371] FIG. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0372] As shown in FIG. 27, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided on the rear surface.

[0373] The camera module 1000 may include an image capture function and an autofocus function, for example, the camera module 1000 may include an image-based autofocus function.

[0374] The camera module 1000 processes still or video image frames acquired by an image sensor in a photography mode or a video call mode.

[0375] The processed image frame can be displayed on a predetermined display unit or stored in a memory.A camera (not shown) can also be disposed on the front of the mobile terminal body.

[0376] For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and the first camera module 1000A may be capable of implementing OIS along with AF or zoom functions.

[0377] The flash module 1530 may include a light emitting element for emitting light therein, and may be activated by the camera of the mobile terminal or by user control.

[0378] The autofocus device 1510 may include one in a package of surface emitting laser elements as the light emitter.

[0379] The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 may be used primarily in conditions where the image-based autofocus function of the camera module 1000 is degraded, such as in close proximity of less than 10 m or in dark environments.

[0380] The autofocus device 1510 may include a light emitting portion including a vertical cavity surface emitting laser (VCSEL) semiconductor device, and a light receiving portion such as a photodiode that converts optical energy into electrical energy.

[0381] FIG. 28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0382] For example, FIG. 28 is an external view of a vehicle equipped with a vehicle driving assistance device to which a camera module 1000 according to an embodiment is applied.

[0383] 28, a vehicle 700 according to an embodiment may include wheels 13FL and 13FR that are rotated by a power source, and a predetermined sensor. The sensor may be, but is not limited to, a camera sensor 2000.

[0384] The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 according to the embodiment may acquire image information through the camera sensor 2000 capturing a front image or a surrounding image, and may determine an unidentified lane situation using the image information and generate a virtual lane when the lane is unidentified.

[0385] For example, the camera sensor 2000 may capture an image in front of the vehicle 700 to acquire a front image, and a processor (not shown) may analyze objects included in the front image to acquire image information.

[0386] For example, if an object such as a lane marking, an adjacent vehicle, a driving obstacle, or a median strip, a curb, or a roadside tree, which corresponds to an indirect road marking, is captured in the image captured by the camera sensor 2000, the processor can detect such an object and include it in the image information. At this time, the processor can obtain distance information from the detected object through the camera sensor 2000 to further complement the image information.

[0387] The image information may be information about an object captured in the image. The camera sensor 2000 may include an image sensor and an image processing module.

[0388] The camera sensor 2000 can process still or moving images obtained by an image sensor (eg, CMOS or CCD).

[0389] The image processing module processes still or moving images acquired through the image sensor to extract necessary information and transmit the extracted information to a processor.

[0390] In this case, the camera sensor 2000 may include, but is not limited to, a stereo camera to improve the accuracy of measuring the object and further secure information such as the distance between the vehicle 700 and the object.

[0391] The above description focuses on the embodiments, but these are merely examples and are not intended to limit the present invention. Those skilled in the art will recognize that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the present invention. For example, each component specifically illustrated in the embodiments can be modified and implemented. Differences related to such modifications and applications should be construed as being included within the scope of the present invention as defined in the appended claims.

Claims

1. housing; a first lens assembly that moves in an optical axis direction relative to the housing; a ball portion located on the first lens assembly; and a drive unit that moves the first lens assembly; the first lens assembly includes a receiving portion having a lens hole for receiving a plurality of lenses; and a guide portion' that contacts the receiving portion and in which the ball portion is positioned; A camera actuator, wherein the axis of the lens hole is positioned offset from the outer surface of the guide portion adjacent to the ball portion.

2. The camera actuator of claim 1 , wherein the upper surface of the receiving portion is non-perpendicular to the outer surface of the guide portion adjacent to the ball portion.

3. The camera actuator of claim 1 , wherein a top surface of the receiving portion and an outer surface of the guide portion adjacent to the ball portion form a first angle.

4. The camera actuator of claim 3 , further comprising: a lens group disposed in a lens hole of the first lens assembly.

5. The camera actuator according to claim 4 , wherein an upper surface of the housing portion and a plane perpendicular to the axis of the lens group form a second angle.

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

7. The camera actuator of claim 4 , wherein the axis of the lens group is aligned with the optical axis direction.

8. The upper surface of the receiving portion includes 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, 5. The camera actuator of claim 4, wherein the upper surface of the lens group includes a third end located on one side in a direction perpendicular to the optical axis direction and a fourth end located on the other side.

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

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

Images