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 within the housing; a drive unit that moves the first lens assembly; and a first stopper disposed at one end of the housing; the first stopper includes a 1-1 stopper disposed on one side and a 1-2 stopper disposed on the other side, and the 1-1 stopper and the 1-2 stopper contact the first lens assembly when the first lens assembly moves.

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 installed in a mobile device, drone, vehicle, 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, there is a problem that the long movement of the lens within the camera module reduces the reliability of the lens. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION A technical problem that embodiments of the present invention aim to solve is to provide a camera actuator and a camera module that improve the reliability of a lens assembly and a lens through a stopper.

[0005] In addition, embodiments of the present invention can provide a camera actuator and a camera module that adjust the positions of multiple stoppers to improve the balance between cracks and impacts on the lens in the lens assembly that moves in the optical axis direction.

[0006] Additionally, embodiments of the present invention may provide a camera actuator and a camera module that includes a lens assembly with improved extraction configuration.

[0007] An embodiment of the present invention provides a camera actuator that is applicable to ultra-slim, ultra-miniature and high-resolution cameras.

[0008] 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]

[0009] 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 within the housing; a driving unit that moves the first lens assembly; and a first stopper that is disposed on a first inner wall of the housing; the first stopper includes a 1-1 stopper that is disposed on one side of the first inner wall of the housing and a 1-2 stopper that is disposed on the other side of the first inner wall of the housing, and both the 1-1 stopper and the 1-2 stopper come into contact with the first lens assembly when the first lens assembly moves.

[0010] The first stopper and the second stopper may be spaced apart in a direction perpendicular to the optical axis direction.

[0011] The first lens assembly may include a receiving portion that receives a lens; a guiding portion that contacts the receiving portion and in which a ball portion is located; and a lens protrusion that contacts the receiving portion and corresponds to the guiding portion.

[0012] The guiding 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.

[0013] The length of the lens protrusion in a direction perpendicular to the optical axis direction may be smaller than the length of the guiding portion in the direction perpendicular to the optical axis direction. The guiding portion and the lens protrusion may have different distances spaced apart from a first inner wall of the housing in the optical axis direction. A distance between the first stopper and the guiding portion of the first lens assembly may correspond to a distance between the second stopper and the lens protrusion.

[0014] The first stopper may include first to third stoppers disposed on a first inner wall of the housing.

[0015] The 1-1 stopper, the 1-2 stopper, and the 1-3 stopper may be arranged to be shifted in a direction perpendicular to the optical axis direction.

[0016] A second lens assembly that moves in the optical axis direction within the housing is included, and when the second lens assembly moves in the optical axis direction, the first to third stoppers can come into contact with the second lens assembly.

[0017] The first-first stopper may be disposed in a region between the first-third stopper and the first-second stopper.

[0018] At least one of the first lens assembly and the second lens assembly may include glass, and the glass may be disposed at the outermost position of at least one of the first lens assembly and the second lens assembly.

[0019] The housing may further include a second stopper disposed on a second inner wall facing the first inner wall in the optical axis direction from the other end of the first inner wall, and the second stopper may include a second-1 stopper disposed on one side of the second inner wall and a second-2 stopper disposed on the other side of the second inner wall. A distance between the second-2 stopper and the second lens assembly may correspond to a distance between the second-1 stopper and the second lens assembly.

[0020] The 2-1 stopper and the 2-2 stopper may overlap in a direction perpendicular to the optical axis direction. [Effects of the Invention]

[0021] According to an embodiment of the present invention, a camera actuator and a camera module can be realized in which the reliability of the lens assembly and the lens is improved through the stopper.

[0022] In addition, the present invention may provide a camera actuator and a camera module that adjusts the positions of a plurality of stoppers to improve the balance between cracks and impacts on a lens in a lens assembly that moves in the optical axis direction.

[0023] Additionally, embodiments of the present invention may embody a camera actuator and a camera module including a lens assembly with an improved extraction structure.

[0024] Embodiments of the present invention can implement a camera actuator applicable to ultra-slim, ultra-compact and high-resolution cameras.

[0025] 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]

[0026] [Figure 1] FIG. 1 is a perspective view of a camera module according to an embodiment.

[0027] [Figure 2] FIG. 1 is an exploded perspective view of a camera module according to an embodiment.

[0028] [Figure 3] This is a view from AA' in Figure 1.

[0029] [Figure 4]FIG. 2 is a perspective view of a second camera actuator according to the embodiment.

[0030] [Figure 5] FIG. 2 is an exploded perspective view of a second camera actuator according to the embodiment.

[0031] [Figure 6] FIG. 5 is a cross-sectional view taken along line DD′ in FIG. 4.

[0032] [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.

[0033] [Figure 9] 10 is a diagram illustrating driving of a second camera actuator according to an embodiment.

[0034] [Figure 10] FIG. 10 is a perspective view of a part of the configuration of a second camera actuator in the embodiment.

[0035] [Figure 11] 1 is a diagram illustrating an optical drive coil, an optical drive magnet, and a yoke according to an embodiment.

[0036] [Figure 12] 10 is a diagram illustrating movement of an optically driven magnet by a driving unit according to an embodiment;

[0037] [Figure 13] 10 is a diagram illustrating the movement of the second and third lens assemblies according to the embodiment.

[0038] [Figure 14] FIG. 2 is a perspective view of a first lens assembly, a first bonding member, a second bonding member, and a second lens assembly according to the embodiment.

[0039] [Figure 15] FIG. 2 is a perspective view of a first lens assembly (or a second lens assembly) according to the embodiment.

[0040] [Figure 16] FIG. 2 is a front view of a first lens assembly (or a second lens assembly) according to the embodiment.

[0041] [Figure 17] FIG. 2 is a side view of a first lens assembly (or a second lens assembly) according to an embodiment.

[0042] [Figure 18] FIG. 2 is a rear view of the first lens assembly (or the second lens assembly) according to the embodiment.

[0043] [Figure 19] FIG. 10 is another side view of the first lens assembly (or the second lens assembly) according to the embodiment.

[0044] [Figure 20] 10 is a view illustrating a housing, a guide portion, and a stopper in a second camera actuator according to an embodiment.

[0045] [Figure 21] FIG. 21 is a perspective view of FIG. 20.

[0046] [Figure 22] FIG. 21 is a side view of FIG. 20.

[0047] [Figure 23] FIG. 21 is an enlarged cross-sectional view of FIG. 20.

[0048] [Figure 24] 10 is a diagram illustrating the effect of a stopper in the second camera actuator according to the embodiment.

[0049] [Figure 25] This is a modification of FIG.

[0050] [Figure 26] FIG. 10 is a perspective view of an additional member, a fixed assembly, and a first lens group in a second camera actuator according to another embodiment.

[0051] [Figure 27] FIG. 1 is a schematic diagram illustrating a circuit board according to an embodiment.

[0052] [Figure 28] FIG. 10 is an exploded perspective view of a second camera actuator according to another embodiment.

[0053] [Figure 29] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to another embodiment. [Figure 30] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to another embodiment. [Figure 31a] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to another embodiment.

[0054] [Figure 31b] FIG. 2 is a perspective view of a main barrel and a trap unit according to the embodiment.

[0055] [Figure 31c] FIG. 31b is a perspective view seen from another direction.

[0056] [Figure 32] 10 is a view showing a main barrel, a first lens assembly, a first ball, and a first yoke in a second camera actuator according to another embodiment.

[0057] [Figure 33] FIG. 33 is a partially enlarged view of FIG.

[0058] [Figure 34] FIG. 33 is another enlarged view of FIG.

[0059] [Figure 35] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to yet another embodiment.

[0060] [Figure 36] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to yet another embodiment.

[0061] [Figure 37] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to yet another embodiment. [Figure 38] FIG. 10 is a perspective view of a main barrel and a trap portion of a second camera actuator according to yet another embodiment.

[0062] [Figure 39] 1 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied;

[0063] [Figure 40] 1 is a perspective view of a vehicle to which a camera module according to an embodiment is applied; DETAILED DESCRIPTION OF THE INVENTION

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person 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.

[0069] Hereinafter, the 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 numbers, and redundant description thereof will be omitted.

[0070] 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.

[0071] 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 as the first actuator, and the second camera actuator 1200 may be used interchangeably as the second actuator.

[0072] 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.

[0073] 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.

[0074] 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).

[0075] 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."

[0076] 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, allowing magnification, autofocusing (AF), zoom, and OIS functions to be performed.

[0077] 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.

[0078] 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.

[0079] 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 perform an auto focus function or a zoom function by moving the lenses in response to a control signal from a predetermined controller.

[0080] One or more lenses move independently or individually along the optical axis.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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. In addition, a camera module consisting of multiple camera modules may be mounted in various electronic devices such as a mobile terminal. Furthermore, the actuator may be a device that moves or tilts a lens or optical member. However, hereinafter, the actuator will be described as including a lens or an optical member. Furthermore, the actuator may be referred to as a "lens moving device," "lens moving device," "optical member moving device," "optical member moving device," etc.

[0085] Referring to FIG. 3, the camera module according to the embodiment may include a first camera actuator 1100 that performs an OIS function and a second camera actuator 1200 that performs a zooming function and an AF function.

[0086] Light may be incident into 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 into 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 (PATH) on the image sensor IS located at one end of the second camera actuator 1200. In the following description, the Z-axis direction or the third direction will be referred to as the optical axis direction. Also, 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.

[0087] 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 in the third direction (Z-axis direction), and the following description will be based on this.

[0088] 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.

[0089] 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 may provide a wide range of magnification by controlling the focus, etc., in the expanded optical path.

[0090] 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 decentering and tilt phenomena and achieving the best optical characteristics.

[0091] 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.

[0092] The second camera actuator 1200 includes a coil and a magnet and can perform high magnification zooming and autofocus functions.

[0093] For example, the first and second lens assemblies may be moving lenses that move via coils, magnets, and guide pins, and the third lens assembly may be a fixed lens, but is not limited to these. For example, the third lens assembly may function as a condenser, focusing light at a specific position, and the first lens assembly may function as a variator, refocusing the image focused by the third lens assembly (the condenser) at another location. Meanwhile, the first lens assembly may experience significant changes in magnification due to significant changes in the distance to the subject or the image distance, and the first lens assembly (the variator) may play an important role in changing the focal length or magnification of the optical system. Meanwhile, the image point focused by the first lens assembly (the variator) may vary slightly depending on its position. In response, the second lens assembly may perform a position compensation function for the image focused by the variator. For example, the second lens assembly may function as a compensator, accurately focusing the image point focused by the first lens assembly (the variator) at the actual image sensor position. For example, the first and second lens assemblies may be driven by electromagnetic force due to the interaction between a coil and a magnet. The above content may be applied to the lens assemblies described below. The first to third lens assemblies may move along the optical axis direction, i.e., the third direction. The first to third lens assemblies may move in the third direction independently or dependently. In the present invention, the first and second lens assemblies may move along the optical axis direction. The third lens assembly may be located at the front end of the first lens assembly or the rear end of the second lens assembly. The third lens assembly may not move in the optical axis direction. That is, the third lens assembly may be a fixed part. The first and second lens assemblies may be movable parts.

[0094] 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.

[0095] 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.

[0096] The optical member RM may be mounted on a holder of the first camera actuator, etc. As an example, the optical member RM may be a mirror or a prism. Although a prism will be illustrated below, the optical member RM may be made up of a plurality of lenses, as in the previous example. Alternatively, the optical member RM may be made up of a plurality of lenses and a prism or mirror. The optical member RM may also include a reflecting portion disposed therein. However, the present invention is not limited thereto.

[0097] 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.

[0098] 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.

[0099] 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, 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).

[0100] Additionally, as described below, the lens group may move along the optical axis. The lens group may be coupled with 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 together with 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.

[0101] 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).

[0102] Such a shielding can (not shown) can block or reduce externally generated electromagnetic waves, thereby reducing the occurrence of malfunctions in the driver 1250.

[0103] 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.

[0104] Also, the lens unit 1220 may be located within the housing 1230. Thus, at least a portion of the lens unit 1220 may move within the housing 1230 along the optical axis direction or the third direction (Z-axis direction).

[0105] Specifically, the lens unit 1220 can include a lens group 1221 and a moving assembly 1222 .

[0106] 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.

[0107] 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.

[0108] 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 in order along the optical axis. Furthermore, the lens group 1221 may further include a fourth lens group. The fourth lens group may be arranged behind the third lens group 1221c.

[0109] 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 may not move along the optical axis direction.

[0110] 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.

[0111] 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.

[0112] However, the number of lens groups is not limited to this, and the fourth lens group described above may not be present, or an additional lens group other than the fourth lens group 1221d may be further disposed.

[0113] 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.

[0114] 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 various elastic elements, such as a leaf spring.

[0115] The translation assembly 1222 is located within a housing 1230 and can include a first lens assembly 1222a and a second lens assembly 1222b.

[0116] 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.

[0117] The first lens assembly 1222a and the second lens assembly 1222b may be respectively opposed to a first guide portion G1 and a second guide portion G2, which may be located on a first side portion 1232a and a second side portion 1232b of a housing 1230 (or a 2-2 housing) described below.

[0118] Optically driven magnets may be mounted on the outer surfaces of the first lens assembly 1222a and the second lens assembly 1222b. For example, a second magnet 1252b may be mounted on the outer surface of the second lens assembly 1222b. A first magnet 1252a may be mounted on the outer surface of the first lens assembly 1222a. In this specification, the first lens assembly 1222a may be referred to as a "first bobbin." The second lens assembly 1222b may be referred to as a "second bobbin."

[0119] 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.

[0120] The housing 1230 may include a second housing 1231 and a second housing 1232. 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.

[0121] The second-second housing 1232 may be located at the rear end of the second-first housing 1231. The first and second lens assemblies and the lens unit 1220 may be placed inside the second-second housing 1232.

[0122] 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. In this case, there may be a plurality of first coils 1251a and second coils 1251b.

[0123] 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. The optical drive coil 1251 may be positioned on the first side 1232a and the second side 1232b. The substrate unit 1270 may be mounted on the outer surfaces of the first side 1232a and the second side 1232b. In other words, the first substrate may be positioned on the outer surface of the first side 1232a, and the second substrate may be positioned on the outer surface of the second side 1232b.

[0124] Furthermore, the first guide portion G1 and the second guide portion G2 may be located on the first side 1232a and the second side 1232b of the housing 1230 (particularly, the second-second housing 1232).

[0125] The first guide portion G1 and the second guide portion G2 may be positioned to correspond to each other. For example, the first guide portion G1 and the second guide portion G2 may be positioned to face each other based on the third direction (Z-axis direction). Furthermore, the first guide portion G1 and the second guide portion G2 may at least partially overlap each other in the second direction (Y-axis direction).

[0126] The first guide portion G1 and the second guide portion G2 may include at least one groove (e.g., guide groove) or recess. A first ball B1 or a second ball B2 may be placed in the groove or recess. The second camera actuator 1200 may further include a ball portion. The ball portion may include a first ball B1 and a second ball B2. The ball portion allows the first and second lens assemblies to move along the optical axis direction. At this time, the ball portion may include at least one rolling member, i.e., a ball. At least one ball may move along the guide groove of the first and second guide portions. 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 portion G1 or the guide groove of the second guide portion G2.

[0127] 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.

[0128] 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.

[0129] 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).

[0130] The first guide portion G1 and the second guide portion G2 may include first guide grooves GG1a and GG2a facing the first recess RS1. The first guide portion G1 and the second guide portion G2 may include second guide grooves GG1b and GG2b facing the second recess RS2. The first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves extending in the third direction (Z-axis direction). The first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves with different shapes. For example, the first guide grooves GG1a and GG2a may be grooves with inclined sides, and the second guide grooves GG1b and GG2b may be grooves with sides perpendicular to the bottom.

[0131] Also, there may be a plurality of first guide grooves GG1a, GG2b or second guide grooves GG1b, GG2b, and a plurality of balls having at least some different diameters may be positioned in the plurality of guide grooves.

[0132] 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.

[0133] 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.

[0134] As an example, the optical drive coil 1251 may be composed of sub-coils arranged sequentially along the optical axis direction (Z-axis direction). For example, multiple sub-coils may be arranged sequentially along the optical axis direction on each side of the main barrel 1232.

[0135] In this embodiment, the optical driving coil 1251 may include a first driving unit and a second driving unit. The first driving unit may provide a driving force to move the first lens assembly 1222a along the optical axis direction. The first driving unit may include a first coil 1251a and a first magnet 1252a. The first driving unit may also include a first driving coil and a first driving magnet. Therefore, the first coil 1251a may be referred to as the "first driving coil," and the first magnet 1252a may be referred to as the "first driving magnet."

[0136] 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.

[0137] The second driving unit may also include a second driving coil and a second driving magnet, whereby the second coil 1251b may be referred to as the "second driving coil" and the second magnet 1252b may be referred to as the "second driving magnet."

[0138] 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.

[0139] The driver 1250 may provide a driving force to move the lens unit 1220 in the third direction (Z-axis direction). The driver 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 opposite each other. For example, the first driving coil 1251a and the first driving magnet 1252a may be positioned opposite each other. The second driving coil 1251b and the second driving magnet 1252b may be positioned opposite 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.

[0140] 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.

[0141] 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).

[0142] 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.

[0143] The optical drive coil 1251 can then be coupled to the substrate portion 1270 via a yoke or the like.

[0144] Also, in this embodiment, the optical drive coil 1251 is a fixed 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.

[0145] The optically driven magnet 1252 can include a first magnet 1252a and a second magnet 1252b.

[0146] 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.

[0147] 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.

[0148] 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 same two subcoils.

[0149] 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.

[0150] 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 or the other end of the first subcoil SC1a may be connected to one end or the other end of the second subcoil SC2a at one node. The other end or the other end of the first subcoil SC1a may be connected to the other end or 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, which may reduce heat generation.

[0151] 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., 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 or a south pole.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] The base portion 1260 may be located between the lens portion 1220 and the image sensor in the circuit board. Components such as a filter may be fixed to the base portion 1260. The base portion 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, in some of the following drawings, this may be omitted for explanation.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] The second camera actuator may further include first stoppers ST1a, ST1b, ST1c 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).

[0162] 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 main barrel 1232, which are first and second inner walls facing 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.

[0163] Alternatively, the first-first stopper ST1a may overlap the guiding portion of the first lens assembly in the optical axis direction, and the first-second stopper ST1b may overlap the lens protrusion portion of the first lens assembly in the optical axis direction.

[0164] The first stopper ST1 may also include a first-third stopper ST1c disposed on the other side of the main barrel 1232. The first-third stopper ST1c may be positioned to overlap with the guiding portion of the second lens assembly 1222b in the optical axis direction. The first-second stopper ST1b may be positioned between the first-third stopper ST1c and the first-first stopper ST1a in the horizontal direction or the second direction.

[0165] 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 disposed 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 disposed on the inner wall or inner wall of the housing or the main barrel 1232. The second stopper ST2 may be disposed 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.

[0166] 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.

[0167] 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 parallel to the optical axis, i.e., in the third direction (Z-axis direction) or in the direction opposite to the third direction, along a rail located on the inner surface of the housing via the first ball B1. 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, the electromagnetic force is generated based on the current flow in the adjacent areas of the first and second sub-coils.

[0168] 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.

[0169] 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 arranged perpendicular to the optical axis direction (e.g., arranged along the first direction). The second region of the second subcoil Sc2a overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction and is arranged perpendicular to the optical axis direction (e.g., arranged along the first direction).

[0170] Also, as shown in the figure, in this embodiment, when a magnetic force is applied from S 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).

[0171] 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.

[0172] 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 either the third direction or a direction parallel to the optical axis direction (both directions). At this time, the electromagnetic force DEM1 can be controlled in proportion to the current DE1 applied to the first coil 1251a.

[0173] 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 placed. 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 placed. 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.

[0174] 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.

[0175] Furthermore, the first coil 1251a may be 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.

[0176] 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.

[0177] Furthermore, the second coil 1251b may be 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 "DE2" in the area of ​​the first sub-coil SC1b adjacent to the second sub-coil SC2b.

[0178] 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).

[0179] 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.

[0180] 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.

[0181] 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 first board 1271. The first coil 1251a may be electrically connected to the second board 1272. 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.

[0182] At this time, the first lens assembly 1222a on which the first magnet 1252a is mounted can move along the third direction (Z-axis direction) due to electromagnetic forces F3A and F3B between the first coil 1251a and the first magnet 1252a. Also, the second lens group 1221b mounted on the first lens assembly 1222a can move along the third direction.

[0183] Then, due to electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b, the second lens assembly 1222b on which the second magnet 1252b is mounted can move along the third direction (Z-axis direction). Also, the third lens group 1221c mounted on the second lens assembly 1222b can move along the third direction.

[0184] 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.

[0185] Also, the second camera actuator may be a fixed zoom or a continuous zoom depending on the way the second lens group (or third lens group) moves.

[0186] 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.

[0187] 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 guiding portion of the first lens assembly 1222a and the first stopper ST1a can be reduced. Also, the distance between the first stopper ST1b and the lens protrusion of the first lens assembly can be reduced.

[0188] 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.

[0189] As a result, even if a lens made of glass is disposed (e.g., at the front end) within 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, lens breakage 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 within the first lens assembly or the second lens assembly.

[0190] Alternatively, in the event of a subsequent collision, the guiding portion, which has a larger volume, may absorb the impact primarily, thereby minimizing damage to the first lens assembly.

[0191] Similarly, the second lens assembly 1222b may collide with the second-2 stopper ST2b. 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-2 stopper ST2b and the second-1 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 of the first lens assembly 1222a. That is, the lens breakage phenomenon can be suppressed. The same applies to the modified example.

[0192] 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.

[0193] Furthermore, when the second lens assembly 1222b moves in the optical axis direction, the first-third stopper ST1c can come into contact with the second lens assembly 1222b.

[0194] 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.

[0195] FIG. 10 is a perspective view of a part of the configuration of the second camera actuator according to the embodiment.

[0196] 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).

[0197] The second guide portion G2 may be disposed opposite the first guide portion G1. As an example, the first guide portion G1 and the second guide portion G2 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.

[0198] As described above, the first ball and the first coil may be arranged adjacent to each other in the first guide portion G1, and the second ball and the second coil may be arranged adjacent to each other in the second guide portion G2.

[0199] Furthermore, 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.

[0200] 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 figures, 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 figures, 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.

[0201] Additionally, the yoke can be positioned to couple to the optical drive coil as well as the optical drive magnet.

[0202] 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.

[0203] The first ball and the second ball may be plural. For example, a plurality of first balls may be arranged in a recess of the first lens assembly 1222a along the optical axis direction (Z-axis direction). Also, a plurality of second balls may be arranged in a recess of the second lens assembly 1222b along the optical axis direction (Z-axis direction).

[0204] 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.

[0205] 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.

[0206] 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 have at least some of 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.

[0207] 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.

[0208] The explanation for the plurality of balls can be applied equally to the first ball.

[0209] As described above, the optically driven magnet may be a plurality of first and second magnets. The first and second magnets 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.

[0210] FIG. 11 is a diagram illustrating the optical driving coil, optical driving magnet, and yoke according to the embodiment, FIG. 12 is a diagram explaining the movement of the optical driving magnet by the driving unit according to the embodiment, and FIG. 13 is a diagram explaining the movement of the second and third lens assemblies according to the embodiment.

[0211] 11 to 13, the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be the same as the length W6 of the second sub-coil SC2a in the optical axis direction (Z-axis direction). This configuration may facilitate control of the driving force of the first sub-coil SC1a and the second sub-coil SC2a.

[0212] Additionally, the overall length W1 (or maximum length) of the optical driving coil in the optical axis direction (Z-axis direction) may be greater than the length W2 (maximum length) of the optical driving magnet 1252a in the optical axis direction (Z-axis direction). This configuration allows the stroke of the optical driving magnet to be maximized. Furthermore, a long stroke can be achieved by a unipolar magnetized optical driving magnet.

[0213] In addition, as an embodiment, the maximum movement distance MD of the first lens assembly in the optical axis direction may be greater than the length in the short axis direction (first direction) of the hole (or hollow portion) of the first subcoil SC1a, and may be equal to or less than the length W3 in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the first subcoil SC1a.

[0214] In addition, the maximum movement distance MD of the first lens assembly may be greater than the length in the short axis direction (first direction) of the hole (or hollow portion) of the second sub-coil SC2a, and may be equal to or less than the length W4 in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the second sub-coil SC2a.

[0215] In addition, as an embodiment, the maximum movement distance MD3 of the second lens assembly in the optical axis direction may be greater than the length in the short axis direction (first direction) of the hole (or hollow portion) of the third sub-coil SC1b, and may be the same as or smaller than the length in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the third sub-coil SC1b.

[0216] In addition, the maximum movement distance MD3 of the first lens assembly may be greater than the length in the short axis direction (first direction) of the hole (or hollow portion) of the fourth sub-coil SC2b, and may be the same as or smaller than the length in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the fourth sub-coil SC2b.

[0217] Furthermore, the length W3 of the inner hole of the first sub-coil SC1a in the optical axis direction may be the same as the length W4 of the inner hole of the second sub-coil SC2a in the optical axis direction.

[0218] Furthermore, the length W2 of the drive magnet 1252a in the optical axis direction (Z-axis direction) may be greater than the length W3 of the internal hole of the first sub-coil SC1a in the optical axis direction. Furthermore, the length W2 of the drive magnet 1252a in the optical axis direction (Z-axis direction) may be greater than the length W4 of the internal hole of the second sub-coil SC2a in the optical axis direction. This allows the optical drive magnet to move along the optical axis within the entire length of the optical drive coil in the optical axis direction.

[0219] Furthermore, the length W2 of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be greater than the lengths W3 and W4 of any one of the hollow portions (or holes) of each sub-coil (first sub-coil to fourth sub-coil) in the optical axis direction.

[0220] The length W2 (maximum length) of the optically driven magnet in the optical axis direction (Z-axis direction) may be smaller than the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction).

[0221] With this configuration, no back electromotive force is generated when the lens assembly moves along the optical axis, and a long stroke can be realized.

[0222] The length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be 0.6 times or less the maximum length W1 of the corresponding first drive coil in the optical axis direction. Preferably, the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be 0.55 times or less the maximum length W1 of the corresponding first drive coil in the optical axis direction. More preferably, the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction) may be 0.5 times or less the maximum length W1 of the corresponding first drive coil in the optical axis direction. This allows the camera device to provide a long stroke while minimizing back electromotive force.

[0223] The maximum movement distance MD of the first lens assembly in the optical axis direction may be smaller than the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction). For example, the maximum movement distance MD of the first lens assembly in the optical axis direction may be 0.66 to 0.92 times the length (maximum length, W2) of the optical drive magnet (or the first and second drive magnets) in the optical axis direction (Z-axis direction). This minimizes the generation of back electromotive force.

[0224] As an example, the overall length W1 (or maximum length) of the optical driving coil in the optical axis direction (Z-axis direction) may be 18 mm to 20 mm. Furthermore, the length W2 of the optical driving magnet in the optical axis direction (Z-axis direction) may be 8 mm to 12 mm. The length W3 of the first sub-coil SC1a in the major axis direction (optical axis direction or third direction) of the hole (or hollow portion) may be 5.6 mm to 8.7 mm. The length W4 of the second sub-coil SC2a in the major axis direction (optical axis direction or third direction) of the hole (or hollow portion) may be 5.6 mm to 8.7 mm.

[0225] The length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be 8 mm to 10 mm. However, as described above, the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be greater than or equal to the length W2 of the optically driven magnet in the optical axis direction (Z-axis direction).

[0226] Additionally, the length W6 of the second sub-coil SC2a in the optical axis direction (Z-axis direction) may be 8 mm to 10 mm. However, as described above, the length W5 of the second sub-coil SC2a in the optical axis direction (Z-axis direction) may be greater than or equal to the length W2 of the optically driven magnet in the optical axis direction (Z-axis direction).

[0227] In addition, in this embodiment, due to the unipolar magnetization of the optically driven magnet, currents can flow in different directions in the first sub-coil SC1a and the second sub-coil SC2a. For example, current can flow in either a clockwise or counterclockwise direction in the first sub-coil SC1a, and current can flow in the other direction in the second sub-coil SC2a.

[0228] Furthermore, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be greater than the movement distances MD2 and MD3 of the lens assemblies in the optical axis direction. That is, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be greater than the maximum movement distance of the first lens assembly or the maximum movement distance of the second lens assembly. With this configuration, a driving force for movement in the optical axis direction can be safely provided.

[0229] Furthermore, as described above, there may be a plurality of lens assemblies, and the lens assembly located at the rear end of the plurality of lens assemblies may have a greater moving distance in the optical axis direction than the lens assembly located at the front end.

[0230] For example, the movement distance MD2 in the optical axis direction (Z-axis direction) of the first lens assembly 1222a may be smaller than the movement distance MD3 in the optical axis direction (Z-axis direction) of the second lens assembly 1222b. In other words, the movement distance in the optical axis direction of the second lens assembly 1222b may be larger than the movement distance in the optical axis direction of the first lens assembly. The first lens assembly 1222a may be located at the front end of the second lens assembly 1222b.

[0231] Furthermore, in the camera actuator according to this embodiment, the optically driven magnet 1252a can be moved from "center" to "maximum movement 1" or "maximum movement 2." Here, when in the "center" position, the optically driven magnet 1252a can overlap the first sub-coil SC1a and the second sub-coil SC2a in the second direction. In other words, the first sub-coil SC1a and the second sub-coil SC2a can all face the optically driven magnet.

[0232] In addition, since the coil extends in the first direction and provides actual electromagnetic force, the overlapping area between the first sub-coil SC1a and the optically driven magnet 1252a may be the same as the overlapping area between the second sub-coil SC2a and the optically driven magnet 1252a, thereby minimizing the generation of back electromotive force and realizing a long stroke.

[0233] "Maximum Movement 1" corresponds to the maximum movement of the optically driven magnet 1252a in the opposite direction to the third direction (Z-axis direction). In this case, the optically driven magnet 1252a may have a larger overlapping area with the first subcoil SC1a than the second subcoil SC2a. Furthermore, the optically driven magnet 1252a may at least partially overlap with the inner hole of the first subcoil SC1a. More specifically, the optically driven magnet 1252a may be spaced apart from the edge of the inner hole of the first subcoil SC1a by a predetermined distance GP2 in the optical axis direction. This configuration reduces the back electromotive force generated at the end of the first subcoil SC1a. For example, the optically driven magnet 1252a may move with a maximum stroke in the opposite direction to the optical axis direction of the first subcoil SC1a to an area where it does not overlap with the end in the second direction (Y-axis direction).

[0234] "Maximum Movement 2" corresponds to the maximum movement of the optically driven magnet 1252a in the third direction (Z-axis direction). In this case, the optically driven magnet 1252a may overlap the second subcoil SC2a by a larger area than the first subcoil SC1a. Furthermore, the optically driven magnet 1252a may at least partially overlap the inner hole of the second subcoil SC2a. More specifically, the optically driven magnet 1252a may be separated from the edge of the inner hole of the second subcoil SC2a by a predetermined distance GP1 in the optical axis direction. This configuration reduces the back electromotive force generated at the end of the second subcoil SC2a. For example, the optically driven magnet 1252a may move with a maximum stroke in the optical axis direction to an area where it does not overlap the end of the second subcoil SC2a in the second direction (Y-axis direction).

[0235] As a result, even if the length of the optical drive magnet 1252a in the optical axis direction is small, a long stroke of the camera actuator can be efficiently realized through the unipolar magnetization and the current direction of the multiple optical drive coils.

[0236] The maximum movement distance of the optically driven magnet 1252a may correspond to the length in the optical axis direction of the first and second recesses that accommodate the first and second balls in the first lens assembly. The maximum movement distance of the optically driven magnet 1252a may correspond to the distance the optically driven magnet 1252a moves in the optical axis direction (Z-axis direction) from maximum movement 1 to maximum movement 2. Alternatively, the maximum movement distance of the optically driven magnet 1252a may correspond to the distance between stoppers that limit the movement of the first and second balls in the optical axis direction. Alternatively, the maximum movement distance of the optically driven magnet 1252a is the maximum distance the bobbin can move, and may correspond to the distance in the optical axis direction between the stopper located in the optical axis direction relative to the bobbin and the stopper located in the opposite direction of the optical axis.

[0237] In addition, the maximum movement distance of the optically driven magnet 1252a may correspond to twice the distance moved from the center to maximum movement 1. The movement distance of the optically driven magnet 1252a according to this embodiment may range from -6 mm to +6 mm based on the center. Here, the movement distance from the center in the optical axis direction is defined as "+" and the direction opposite to the optical axis direction is defined as "-". Thus, the optically driven magnet 1252a (or at least one of the first lens assembly and the second lens assembly) according to this embodiment may move in the range of 0 mm to 12 mm along the optical axis direction. In addition, the above-mentioned maximum movement distance may correspond to the maximum stroke of the lens assembly in the camera module.

[0238] FIG. 14 is a perspective view of a first lens assembly, a first bonding member, a second bonding member, and a second lens assembly according to the embodiment.

[0239] 14, the first lens assembly 1222a and the second lens assembly 1222b may be spaced apart in the optical axis direction (Z-axis direction). The first lens assembly 1222a and the second lens assembly 1222b may be moved along the optical axis direction (Z-axis direction) by a driving unit. For example, an autofocus or zoom function may be performed by moving the first lens assembly 1222a and the second lens assembly 1222b.

[0240] The first lens assembly 1222a may also include a first lens holder LAH1 that holds and couples the second lens group 1221b. The first lens holder LAH1 may be coupled to the second lens group 1221b. The first lens holder LAH1 may also include a first lens hole LH1 for accommodating the second lens group 1221b. That is, the second lens group 1221b, which includes at least one lens, may be disposed in the first lens hole LH1. The first lens holder LAH1 is the same as a housing portion (e.g., a first housing portion, a second housing portion) described below, and may be used interchangeably.

[0241] The second lens assembly 1222b may include a second lens holder LAH2 that holds and couples the third lens group 1221c. The second lens holder LAH2 may also include a second lens hole LH2 for accommodating the third lens group 1221c. That is, at least one lens may be disposed in the second lens hole LH2.

[0242] As an example, the first lens assembly 1222a and the second lens assembly 1222b may each include adjacent outer surfaces. The first lens assembly 1222a may include a first outer surface MM1, and the second lens assembly 1222b may include a second outer surface MM2. The first outer surface MM1 may be the bottom surface of the first lens holder LAH1 based on the optical axis direction (Z-axis direction). A third outer surface MM3 (described below) may be the top surface of the first lens holder LAH1. The second outer surface MM2 may be the top surface of the second lens holder LAH2, and the fourth outer surface MM4 may be the bottom surface of the second lens holder LAH2.

[0243] The first outer surface MM1 and the second outer surface MM2 may at least partially overlap in the optical axis direction (Z-axis direction). As an example, the first outer surface MM1 to the fourth outer surface MM4 may at least partially overlap with one another in the optical axis direction (Z-axis direction).

[0244] For example, a joining member (not shown) may contact at least one of the first outer surface MM1 and the second outer surface MM2.

[0245] Figure 15 is a perspective view of the first lens assembly (or the second lens assembly) according to the embodiment, Figure 16 is a front view of the first lens assembly (or the second lens assembly) according to the embodiment, Figure 17 is one side view of the first lens assembly (or the second lens assembly) according to the embodiment, Figure 18 is a rear view of the first lens assembly (or the second lens assembly) according to the embodiment, and Figure 19 is another side view of the first lens assembly (or the second lens assembly) according to the embodiment.

[0246] 15, as described above, the first lens assembly 1222a and the second lens assembly 1222b 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 can also be applied to the second lens assembly 1222b. Furthermore, the first lens assembly 1222a and the second lens assembly 1222b can be arranged side by side along the optical axis, with their respective guiding portions positioned on opposite sides. For example, the first lens assembly 1222a and the second lens assembly 1222b can be positioned upside down or in a corresponding manner with respect to the optical axis.

[0247] 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 guiding portion GP, ​​and a lens protrusion LP. The following description will be given based on the first lens assembly 1222a.

[0248] 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. At this time, the number of lenses may be multiple, and at least one of the lenses may be made of glass.

[0249] Furthermore, the guiding portion GP may have a ball portion disposed in contact with the receiving portion LAH1. 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 placed in 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.

[0250] The lens protrusion LP is in contact with the housing portion LAH1 and can correspond to the guiding portion GP.

[0251] In one embodiment, the guiding portion GP may be located on one side or one lateral portion of the receiving portion LAH1, and the lens protrusion LP may be located on the other side or other lateral portion of the receiving portion LAH1. For example, the guiding portion GP may be located on the opposite side of the receiving portion LAH1 from the lens protrusion LP.

[0252] 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.

[0253] 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.

[0254] 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.

[0255] Furthermore, the guiding part GP according to the embodiment may include a side plate GPa and wing parts GPb. The wing parts GPb may contact both the side plate GPa and the receiving part LAH1. The thickness THa of the wing parts GPb may decrease along the optical axis direction. Furthermore, there may be a plurality of wing parts GPb. This configuration allows for easy removal while maintaining support for the side plate GPa. In addition, the support of the second pin grooves located in the side plate GPa is improved, making it easier to maintain flatness during removal.

[0256] Furthermore, a retainer RT1 may be positioned on the first outer surface MM1 of the first lens assembly 1222a. The first and second lens assemblies may have retainers positioned on their opposing outer surfaces (first and second outer surfaces). The retainer RT1 may be coupled to the first outer surface MM1 through a protrusion / groove structure. Furthermore, a bonding material such as epoxy may be applied to the first outer surface MM1, thereby improving the bonding strength between the first outer surface MM1 and the retainer RT1. Such a retainer RT1 may prevent the lens positioned in the first lens hole LH1 from falling out. Furthermore, a plurality of grooves or protrusions may be formed on the first outer surface MM1. In addition, a plurality of marks (e.g., grooves) may be positioned on the side 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 may be used to perform an inspection of the operation of the first and second lens assemblies.

[0257] 16 to 18, 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.

[0258] 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 with which the ejector pin is in close contact for removal.

[0259] Furthermore, according to the embodiment, the length Lb of the guiding portion GP in the third direction may be greater than the length La of the lens protrusion LP in the third direction. Conversely, the length La of the lens protrusion LP may be less than the length Lb of the guiding portion GP.

[0260] Furthermore, the upper surface GPU of the guiding 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 guiding part GP may be located at the rear end of the lower surface LPB of the lens protrusion part LP. The length of the guiding part GP in the first direction may be greater than the length of the lens protrusion part LP in the first direction. Thus, the lengths of the guiding part GP in both the first and third directions may be greater than those of the lens protrusion part LP.

[0261] With additional reference to FIG. 19, according to an embodiment, the side plate GPa of the guiding part GP includes a first area A1, a second area A2 and a third area A3.

[0262] 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.

[0263] The first region A1 may include a first recess RS1, and the second region A2 may include a second recess RS2. A first ball and a second ball may be placed in the first recess RS1 and the second recess RS2. For example, the first ball may be located in the first and second recesses of the first lens assembly, and the second ball may be located in the first and second recesses of the second lens assembly.

[0264] 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 guiding part 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.

[0265] Figure 20 is a drawing illustrating the housing, guide portion, and stopper of the second camera actuator according to the embodiment, Figure 21 is an oblique view of Figure 20, Figure 22 is a side view of Figure 20, Figure 23 is an enlarged cross-sectional view of Figure 20, and Figure 24 is a drawing explaining the effect of the stopper in the second camera actuator according to the embodiment.

[0266] 20 to 23, the first stopper ST1a and the first stopper ST1b may be spaced apart in the second or third direction. That is, the first stopper ST1a and the first stopper ST1b may be spaced apart a predetermined distance in the second direction. The first stopper ST1a and the first stopper ST1b may be spaced apart a predetermined distance (gap1) in the third direction. This predetermined distance (gap1) may correspond to the distance between the lens protrusion and the guiding part in the first lens assembly in the optical axis direction.

[0267] That is, the distance between the first-1 stopper ST1a and the guiding portion GP of the first lens assembly 1222a may correspond to the distance between the first-2 stopper ST1b and the lens protrusion portion LP of the first lens assembly 1222a.

[0268] With this configuration, when the first lens assembly 1222a moves to its maximum in the opposite direction of the optical axis, the first lens assembly 1222a can contact the first-first stopper ST1a and the first-second stopper ST1b simultaneously, thereby reducing the impact on the second lens group 1221b in the first lens assembly 1222a.

[0269] Looking more closely at Figure 24, Figure 24(a) shows the state of a lens (e.g., glass) positioned at the front end of the second lens group when only the 1-1 stopper is present, and Figure 24(b) shows the state of a lens (e.g., glass) positioned at the front end of the second lens group when both the 1-1 stopper and the 1-2 stopper are present.

[0270] As shown in the figure, when both the first stopper and the first stopper are present, the impact is not concentrated on one side, which can reduce material deformation (e.g., cracks, etc.) and damage to the first and second lens assemblies that move over a long distance or long stroke.

[0271] [Table 1]

[0272] Table 1 shows the experimental results of impacts applied to the second lens group when a drop test was performed in the vertical, horizontal, and optical axis directions. As shown, when the drop test was performed in the opposite direction to the optical axis direction, the impacts applied to the second lens group were significantly reduced. Furthermore, the first-third stopper ST1c may be spaced apart from the first-first stopper ST1a and the first-second stopper ST1b in the second direction (Y-axis direction) or the third direction. The first-first stopper ST1a may be spaced apart from the first-third stopper ST1c by a predetermined distance in the second direction (Y-axis direction). The first-first stopper ST1a may be spaced apart from the first-third stopper ST1c by a predetermined distance (gap 2) in the third direction or the optical axis direction.

[0273] The first and second stoppers ST1b and ST1c may be spaced apart by a predetermined distance in the second direction (Y-axis direction), and the first and second stoppers ST1b and ST1c may be spaced apart by a predetermined distance (gap 3) in the third direction or optical axis direction.

[0274] The first-first stopper ST1a, the first-second stopper ST1b, and the first-third stopper ST1c may be arranged so as to be offset in the horizontal direction or the second direction. The first-first stopper ST1a, the first-second stopper ST1b, and the first-third stopper ST1c do not have to overlap in the horizontal direction or the second direction.

[0275] The first-first stopper ST1a can be positioned between the first-third stopper ST1c and the first-second stopper ST1b.

[0276] This allows the shape of the first lens assembly to provide improved extraction while ensuring the reliability of the second lens group.

[0277] [Table 2]

[0278] The first stopper ST1a and the first stopper ST1b may have the same or different lengths or thicknesses in the optical axis direction. For example, the thickness of the first stopper ST1b may be greater than the thickness of the first stopper ST1a. This reduces the amount of impact applied to the lens protrusion of the first lens assembly, which has a relatively smaller area than the guiding portion. This improves the reliability of the first lens assembly. As shown in Table 2, the first stopper ST1a and the first stopper ST1b may be made of boron. The first stopper ST1b and the first stopper ST1b may have the same or similar thicknesses. For example, the first stopper ST1a and the first stopper ST1b may have a thickness of 350 to 650 μm. For example, the first stopper ST1a and the first stopper ST1b may have a thickness of 500 μm. The first stopper ST1a and the first stopper ST1b may have an elastic modulus of 20 to 40 MPa. In this case, it can be seen that the stress applied to the lens assembly is significantly reduced in cases 6 and 7 of Table 2. For example, the compression ratio between the 1-1 stopper and the 1-2 stopper may be 1:1 to 1:1.2. The compressibility of the 1-1 stopper and the 1-2 stopper may also be 1:1 to 1:1.2. That is, when the compression ratio between the 1-1 stopper and the 1-2 stopper is within 50%, low stress may be provided. Furthermore, the distance between the 2-2 stopper ST2b and the second lens assembly 1222b may correspond to the distance between the 2-1 stopper ST2a and the second lens assembly 1222b. This may ensure the reliability of the third lens group in the second lens assembly. Furthermore, the 2-1 stopper ST2a may overlap the 2-2 stopper ST2b in the horizontal direction. This may improve the balance of the second camera actuator.

[0279] The second-first stopper ST2a may at least partially overlap the first-first stopper ST1a in the optical axis direction, which facilitates ejection of the main barrel 1232 and suppresses bending.

[0280] Furthermore, the second-second stopper ST2b may overlap with the first-third stopper ST1c in the optical axis direction. The second-second stopper ST2b may be misaligned with the first-second stopper ST1b in the optical axis direction. The second-second stopper ST2b does not have to overlap with the first-second stopper ST1b in the optical axis direction. This prevents bending and other phenomena from occurring when the second lens assembly moves, improving reliability.

[0281] Furthermore, the first-first stopper ST1a or the first-second stopper ST1b may be located between the first-third stopper ST1c and the second-second stopper ST2b, and the first-first stopper ST1a or the first-second stopper ST1b may be located between the first-third stopper ST1c and the second-first stopper ST2a.

[0282] Furthermore, at least a part of the second-second stopper ST2b, the first-first stopper ST1a and the first-second stopper ST1b may be located between the first-third stopper ST1c and the second-first stopper ST2a.

[0283] Furthermore, the first-first stopper ST1a may be located at the rear end of the first-third stopper ST1c, the first-second stopper ST1b may be located at the rear end of the first-first stopper ST1a, and the second-first stopper ST2a and the second-second stopper ST2b may be located at the rear end of the first-second stopper ST1b.

[0284] Furthermore, the first-third stopper ST1c and the second-second stopper ST2b may be positioned adjacent to the second guide portion G2. The second-first stopper ST2a may be positioned adjacent to the first guide portion G1. The first-first stopper ST1a and the first-second stopper ST1b may be positioned inside the second-first stopper ST2a and the second-second stopper ST2b (or the first-third stopper).

[0285] FIG. 25 is a modification of FIG.

[0286] 25, the second camera actuator (or camera device or zoom lens moving device or zoom lens moving device or lens moving device) according to the modified example may include a lens unit, a housing, a driving unit, a base unit, a substrate unit, and stoppers ST1 and ST2. The same description as above applies.

[0287] The first stopper ST1 may include a first-first stopper ST1a and a first-second stopper ST1b. That is, the first-third stopper ST1c may not be present. This may ensure the reliability of the first lens assembly 1222a and the lenses, as described above.

[0288] Furthermore, the first stopper includes the first-1 stopper ST1a and the first-2 stopper ST1b arranged on both sides, so that the structural stability of the second camera actuator can be improved.

[0289] FIG. 26 is a perspective view of an additional member, a fixed assembly, and a first lens group in a second camera actuator according to another embodiment.

[0290] 26, a second camera actuator (or camera device or zoom lens moving device or zoom lens moving device or lens moving device) according to another embodiment may include a lens unit, a housing, a driving unit, a base unit, a substrate unit, and stoppers ST1 and ST2. The same description as above applies.

[0291] The second housing or fixing assembly 1231 may include a third stopper ST3 disposed on the lower surface 1231B. The third stopper ST3 may have a larger diameter than the receiving hole 1231h of the fixing assembly 1231. Furthermore, the receiving hole 1231h of the fixing assembly 1231 and the inner surface of the third stopper ST3 may be spaced apart by a predetermined distance (gap 4). This maximizes the effective diameter of the first lens group 1221a within the receiving hole 1231h of the fixing assembly 1231.

[0292] When the first lens assembly is at its maximum movement, the third stopper ST3 can come into contact with the first lens assembly, and therefore the third stopper ST3, together with the first stopper, can further improve the reliability of the first lens assembly.

[0293] For example, the third stopper ST3 may have a stepped structure, which can gradually reduce the impact on the first lens assembly.

[0294] FIG. 27 is a schematic diagram illustrating a circuit board according to an embodiment.

[0295] 27, 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.

[0296] 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.

[0297] 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.

[0298] 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.

[0299] 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.

[0300] In addition, the circuit board 1300 may be electrically connected to other camera modules within the device or to a processor of the device, so that the camera actuator and the camera module including the same can transmit and receive various signals within the device.

[0301] FIG. 28 is an exploded perspective view of a second camera actuator according to another embodiment.

[0302] 28, a second camera actuator 1200 (or camera device or zoom lens moving device or zoom lens moving device or lens moving device) according to another embodiment may include a lens unit 1220, a housing 1230, a driving unit 1250, a base unit 1260, a substrate unit 1270, and stoppers ST1 and ST2. Furthermore, the second camera actuator 1200 may further include a shielding can (not shown), an elastic unit (not shown), a trap unit (not shown), and a joint member (not shown). The same applies except for the content described below.

[0303] In this embodiment, the first guide portion G1 may include first guide grooves GG1a and GG1b facing the first recess RS1. The second guide portion G2 may include second guide grooves GG2a and GG2b facing the second recess RS2. The first guide grooves GG1a and GG1b and the second guide grooves GG2a and GG2b may be grooves extending in the third direction (Z-axis direction). The first guide grooves GG1a and GG1b and the second guide grooves GG2a and GG2b may have different shapes. For example, at least one of the first guide grooves GG1a and GG1b and the second guide grooves GG2a and GG2b may have a groove with an inclined side surface, and the other may have a groove with a side surface perpendicular to the bottom surface.

[0304] Also, there may be a plurality of first guide grooves GG1a, GG1b or second guide grooves GG2a, GG2b, and a plurality of balls having at least some different diameters may be positioned in the plurality of guide grooves.

[0305] A first magnet and a first coil may be located on the first side, and a second magnet and a second coil may be located on the second side. The second magnet 1252b may be located opposite the second coil 1251b, and the first magnet 1252a may be located opposite the first coil 1251a.

[0306] The first stopper ST1 and the second stopper ST2 can limit the moving distance of the moving assembly and absorb shocks.

[0307] As an example, the second yoke portion or yoke portion YK may be disposed outside the driving portion. For example, the yoke portion YK may be disposed outside the first and second coils. The second yoke portion YK may include a first yoke YK1 and a second yoke YK2.

[0308] The first yoke YK1 and the second yoke YK2 may be disposed opposite each other, for example, the first yoke YK1 and the second yoke YK2 may be positioned to correspond to each other with respect to the optical axis.

[0309] The first yoke YK1 may be positioned adjacent to the first coil 1251a. The second yoke YK2 may be positioned adjacent to the second coil 1251b. The first coil 1251a and the second coil 1251b may be positioned inside the first yoke YK1 and the second yoke YK2. Furthermore, the first yoke YK1, the first coil 1251a, the second coil 1251b, and the second yoke YK2 may be sequentially arranged in one direction (e.g., a second direction). The first yoke YK1 may generate an attractive force with the first magnet. Furthermore, the second yoke YK2 may generate an attractive force with the second magnet. This may allow the postures of the first and second lens assemblies to be maintained.

[0310] Furthermore, the thickness of the first yoke YK1 and the second yoke YK2 may vary in some areas. This configuration can prevent the magnetic force generated by the first and second magnets or the first and second coils from affecting other magnets or coils. For example, the first yoke YK1 can prevent the magnetic force generated by the first magnet from being applied to the second magnet or second coil.

[0311] Furthermore, the trap unit can be located in the second housing or the main barrel 1232. With this configuration, the trap unit can collect foreign matter (e.g., dust) generated by an impact between components (e.g., an impact between the lens assembly and the main barrel). This can prevent a decrease in driving performance due to the foreign matter. The trap unit will be described in detail later.

[0312] The trap part can also contain grease or dust trap agents. For example, the trap part can contain a polymer adhesive material. The trap part can contain polymethyl methacrylate (PMMA). The trap part can also be made of resin. This allows only the adhesive material to remain after application, allowing foreign matter to be trapped.

[0313] Figures 29, 30 and 31a are perspective views of the main barrel and trap section of a second camera actuator according to another embodiment, Figure 31b is a perspective view of the main barrel and trap section according to the embodiment, and Figure 31c is a perspective view of Figure 31b viewed from another direction.

[0314] 29, 30, and 31a, as described above, the second 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. A second driving coil may be positioned on the first side 1232a and the second side 1232b. A second substrate unit may be mounted on the outer surfaces of the first side 1232a and the second side 1232b. The second substrate unit may be positioned outside the driving coil and electrically connected to the driving coil.

[0315] For example, a first substrate may be located on the outer surface of the first side portion 1232a, and a second substrate may be located on the outer surface of the second side portion 1232b.

[0316] Furthermore, first guide grooves GG1a and GG1b, in which the first and second balls are placed, may be located on the inner surface of the first side portion 1232a. The first guide grooves GG1a and GG1b may face the first and second recesses described above. Similarly, second guide grooves GG2a and GG2b, in which the first and second balls are placed, may be located on the inner surface of the second side portion 1232b. The first guide grooves GG1a and GG1b may face the first and second recesses described above.

[0317] Furthermore, the first side portion 1232a may include a first side hole 1232ah. A first magnet may be positioned in the first side hole 1232ah. Furthermore, the first side hole 1232ah may have a length in the second direction that is smaller than that of the first coil.

[0318] The second side portion 1232b may include a second side hole 1232bh. A fourth magnet may be positioned in the second side hole 1232bh. Furthermore, the second side hole 1232bh may have a length in the second direction that is smaller than that of the second coil.

[0319] Furthermore, the second housing 1232 may include a housing hole 1232h disposed at either the top or bottom thereof, through which coupling may be easily performed or inspection (e.g., vision inspection) of the first and second lens assemblies may be performed.

[0320] The first guide grooves GG1a and GG1b located on the first side portion 1232a may extend in the third direction. Furthermore, the first guide grooves GG1a and GG1b may have different shapes. For example, one of the first guide grooves GG1a may be an inclined groove, and the other (GG1b) may have a flat structure. This also applies to the second guide grooves GG2a and GG2b. The first and second balls are placed in the inclined groove and flat structure, allowing the first or second lens assembly to move along the optical axis.

[0321] 31b and 31c, the second housing or main barrel 1232 according to the embodiment may include a housing opening 1232h on the top surface, as described above.

[0322] Furthermore, the main barrel 1232 may include an inner surface facing the upper or lower surface of the moving assembly and having a housing protrusion formed thereon. The housing protrusion may be located on the inner surface facing the upper or lower surface of the first or second lens assembly. For example, the upper and lower surfaces may be surfaces facing each other in a first direction or vertical direction. While the housing protrusion will be described below with reference to the first lens assembly, it may also be applied to the second lens assembly. However, since the first and second lens assemblies are arranged in the optical axis direction or symmetrically with respect to the optical axis, the following description may be applied interchangeably in consideration of their opposite structures. The inner surface may include a first inner surface 1232S1 and a second inner surface 1232S2, which will be described later. The first inner surface 1232S1 may be the upper surface of the inner surface of the main barrel 1232. The second inner surface 1232S2 may be the lower surface of the inner surface of the main barrel 1232. The first inner surface 1232S1 and the second inner surface 1232S2 of the main barrel 1232 may be positioned to face each other. For example, the first inner surface 1232S1 and the second inner surface 1232S2 may overlap each other in the vertical direction or the first direction.

[0323] The trap portion may be located on the inner surface between the housing protrusion and the first guide portion. The trap portions DT1 and DT2 may include a first trap portion DT1 located on the first inner surface 1232S1 and a second trap portion DT2 located on the second inner surface 1232S2. The first trap portion DT1 may be located on the first inner surface 1232S1 between the first housing protrusion 1232pr1a and the first guide portion or between the second sub-housing protrusion 1232pr1b and the second guide portion.

[0324] As an example, the first inner surface 1232S1 facing the top surface of the first lens assembly may include a first protrusion or first housing protrusion 1232pr1 extending vertically. The first housing protrusion 1232pr1 may extend downward. Furthermore, the first housing protrusion 1232pr1 may include a first sub-housing protrusion 1232pr1a and a second sub-housing protrusion 1232pr1b. As a variant, only the first sub-housing protrusion 1232pr1a may be located on the first inner surface 1232S1. However, the following description will be based on the first housing protrusion 1232pr1 including the first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b.

[0325] The first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b may be spaced apart from each other in the horizontal direction (Y-axis direction). The horizontal distance between the first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b may be greater than the horizontal length of the housing opening 1232h. This allows for impact reduction between the lens assemblies and the housing to be achieved independently of inspection of the first and second lens assemblies.

[0326] Furthermore, the lengths Lb and Lc of the first housing protrusion 1232pr1 or the second housing protrusion 1232pr2 (described later) along the optical axis direction may be greater than the length of the first lens assembly in the optical axis direction. Also, the lengths Lb and Lc of the first housing protrusion 1232pr1 or the second housing protrusion 1232pr2 along the optical axis direction may be greater than the length of the wing of the first lens assembly in the optical axis direction. In other words, the lengths Lb and Lc of the first housing protrusion 1232pr1 or the second housing protrusion 1232pr2 along the optical axis direction may be greater than the maximum length of the first lens assembly in the optical axis direction. Also, the lengths Lb and Lc of the first housing protrusion 1232pr1 or the second housing protrusion 1232pr2 along the optical axis direction may be greater than the length of the first lens holder in the optical axis direction.

[0327] Furthermore, the lengths Lb and Lc of the first housing protrusion 1232pr1 and the second housing protrusion 1232pr2 along the optical axis direction may be greater than the length of the second lens assembly along the optical axis direction. This configuration may reduce the amount of impact between the first and second lens assemblies and the main barrel 1232 throughout the entire movement range of the first and second lens assemblies.

[0328] In addition, the outer surface of the first sub-housing protrusion 1232pr1 may be perpendicular to the horizontal direction, and the extension surface of the first sub-housing protrusion 1232pr1 may be perpendicular to the vertical direction.

[0329] The main barrel 1232 may also include a second protrusion or second housing protrusion 1232pr2 extending vertically from a second inner surface 1232S2 facing the lower surface of the first lens assembly. The second housing protrusion 1232pr2 may extend upward. The second housing protrusion 1232pr2 may further include a third sub-housing protrusion 1232pr2a and a fourth sub-housing protrusion 1232pr2b.

[0330] For example, the third sub-housing protrusion 1232pr2a and the fourth sub-housing protrusion 1232pr2b may be spaced apart from each other in the horizontal direction. Furthermore, the horizontal distance between the third sub-housing protrusion 1232pr2a and the fourth sub-housing protrusion 1232pr2b may be greater than the horizontal length of the housing opening 1232h.

[0331] In addition, the horizontal separation distance between the third sub-housing protrusion 1232pr2a and the fourth sub-housing protrusion 1232pr2b may be the same as or different from the horizontal separation distance between the first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b.

[0332] For example, the horizontal separation distance between the third sub-housing protrusion 1232pr2a and the fourth sub-housing protrusion 1232pr2b may be the same as the horizontal separation distance between the first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b. This allows the first housing protrusion 1232pr1 and the second housing protrusion 1232pr2 to at least partially overlap each other in the vertical direction. This configuration may improve reliability against impact.

[0333] Alternatively, the horizontal separation distance between the third sub-housing protrusion 1232pr2a and the fourth sub-housing protrusion 1232pr2b may be different from the horizontal separation distance between the first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b. This allows the first sub-housing protrusion 1232pr1a to not overlap at least partially with the third sub-housing protrusion 1232pr2a in the vertical direction. Also, the second sub-housing protrusion 1232pr1b may not overlap at least partially with the fourth sub-housing protrusion 1232pr2b in the vertical direction. This configuration facilitates impact dispersion.

[0334] Additionally, in the second camera actuator, the first lens assembly may have first and second assembly protrusions, and the second housing may have first and second housing protrusions. Furthermore, the first and second assembly protrusions and the first and second housing protrusions may at least partially overlap each other in the vertical direction. This allows impact between the lens assembly and the second housing to be dispersed through the assembly protrusions and the housing protrusions, respectively.

[0335] In addition, the first and second housing protrusions and the first and second lens assembly protrusions do not have to overlap in the vertical direction. The first and second assembly protrusions and the first and second housing protrusions can be arranged offset from each other in the vertical direction. This improves the impact reliability of the lens assembly and the second housing, and facilitates accurate linear movement of the first and second lens assemblies along the optical axis.

[0336] In addition, the first trap portion DT1 according to the embodiment may include a first sub-trap portion DT1a disposed outside the first sub-housing protrusion 1232pr1a and a second sub-trap portion DT1b disposed outside the second sub-housing protrusion 1232pr1b.

[0337] The second trap portion DT2 may include a third sub-trap portion DT2a disposed outside the third sub-housing protrusion 1232pr2a and a fourth sub-trap portion DT2b disposed outside the fourth sub-housing protrusion 1232pr2b.

[0338] The inner surface may include a first region S1 and a second region S2. For example, the first inner surface 1232S1 may include a first region S1 and a second region S2.

[0339] The first region S1 is a region between the first sub-housing protrusion 1232pr1a and the second sub-housing protrusion 1232pr1b, and the second region S2 is a region located outside the first sub-housing protrusion 1232pr1a or outside the second sub-housing protrusion 1232pr1b.

[0340] That is, there may be at least one second region S2. The following description will be based on two second regions S2. The second regions S2 may be spaced apart in the horizontal direction. The first region S1 may be located between the spaced second regions S2. The housing protrusion 1232h may be located in the first region S1. The first trap portion DT1 may be located in the second region S2.

[0341] Similarly, the second inner surface 1232S2 may include a first region S1 and a second region S2. The first region S1 is the region between the third sub-housing protrusion 1232pr2a and the fourth sub-housing protrusion 1232pr2b. The second region S2 is the region located outside the third sub-housing protrusion 1232pr2a or the fourth sub-housing protrusion 1232pr2b. The first sub-housing protrusion 1232pr1a may vertically overlap the third sub-housing protrusion 1232pr2a, and the second sub-housing protrusion 1232pr2a may vertically overlap the fourth sub-housing protrusion 1232pr2b. Therefore, the first and second regions of the second inner surface 1232S2 may be defined by the first and second sub-housing protrusions. The first and second regions of the first inner surface 1232S1 may correspond to the first and second regions of the second inner surface 1232S2. For example, the first and second regions of the first inner surface 1232S1 may be vertically overlapped with the first and second regions of the second inner surface 1232S2.

[0342] FIG. 32 is a view of the main barrel, first lens assembly, first ball, and first yoke of a second camera actuator according to another embodiment, FIG. 33 is an enlarged view of a portion of FIG. 32, and FIG. 34 is another enlarged view of FIG. 32.

[0343] 32 to 34, the first lens assembly 1222a may include a first lens holder LAH1 that holds and couples the second lens group. The first lens holder LAH1 may be coupled to the second lens group. The first lens holder LAH1 may also include a first lens hole for accommodating the second lens group. That is, the second lens group 1221b including at least one lens may be disposed in the first lens hole.

[0344] The first guide portion G1 may be spaced apart from one side of the first lens holder LAH1. For example, the first guide portion G1 and the first lens holder LAH1 may be sequentially arranged in the second direction (Y-axis direction).

[0345] The second lens assembly 1222b may include a second lens holder LAH2 that holds and couples the third lens group. The second lens holder LAH2 may also include a second lens hole LH2 for accommodating the third lens group. That is, at least one lens may be disposed in the second lens hole LH2.

[0346] The first lens assembly may include a first lens holder and a wing portion WP disposed on a side of the first lens holder. The wing portion WP may face the first guide portion. In this case, the length of the wing portion WP in the optical axis direction may be greater than the length of the first lens holder LAH1 in the optical axis direction. Hereinafter, the description of the first lens assembly may be applied to the description of the second lens assembly.

[0347] The first inner surface 1232S1 may face the upper surface 1222as1 of the first lens assembly 1222a. The second inner surface 1232S2 may face the lower surface 1222as2 of the first lens assembly 1222a. The first inner surface 1232S1 may be located above the upper surface 1222as1 of the first lens assembly 1222a. The second inner surface 1232S2 may be located below the lower surface 1222as2 of the first lens assembly 1222a.

[0348] The first region S1 may vertically overlap the upper surface 1222as1 and the lower surface 1222as2 of the first lens assembly 1222a.

[0349] The second region S2 may overlap the first ball B1 or the first recess RS1 in the vertical direction.

[0350] The first sub-trap portion DT1a or the second sub-trap portion DT1b may be disposed in the second region S2 of the first inner surface 1232S1, and the third sub-trap portion DT2a and the fourth sub-trap portion DT2b may be disposed in the second region S2 of the second inner surface 1232S2.

[0351] The first and second housing protrusions may overlap the first lens assembly (or the second lens assembly) vertically or horizontally. In particular, the first lens assembly 1222a may include an assembly groove 1222ag facing the third sub-housing protrusion 1232pr2a (or the first sub-housing protrusion). The assembly groove 1222ag may be located between the center of the first lens holder LAH1 and the wing portion WP.

[0352] The first separation distance D1 may be the vertical distance between the second region S2 and the first lens assembly 1222a. The second separation distance D2 may correspond to the separation distance (e.g., minimum distance) between the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a) and the wing portion WP. The second separation distance D2 may correspond to the separation distance between the outer surface OS of the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a) and the wing portion WP.

[0353] The third separation distance D3 may be the separation distance between the assembly groove 1222ag and the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a). The third separation distance D3 may be the separation distance between the assembly groove 1222ag and the extension surface (e.g., upper surface or lower surface) of the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a).

[0354] The fourth separation distance D4 may be the separation distance between the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a) and the first lens holder LAH1. The fourth separation distance D4 may be the separation distance between the inner surface ISF of the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a) and the first lens holder LAH.

[0355] The fifth separation distance D5 may be the separation distance between the first region S1 and the first lens holder LAH1. For example, the fifth separation distance D5 may be the vertical distance between the first region S1 and the first lens holder LAH1. The sixth separation distance D6 may be the separation distance between the second sub-housing protrusion (or the fourth sub-housing protrusion 1232pr2b) and the first lens holder LAH1.

[0356] In one embodiment, the first separation distance D1 may be greater than the second separation distance D2. This configuration allows the amount of impact in the second region S2 to be smaller than in other regions of the inner surface when the first lens assembly 1222a collides with the inner surface. This reduces the generation of foreign matter in the second region S2. Therefore, most foreign matter can be captured by the trap portion in the second region S2 before it flows into the first guide or the first recess. In other words, the inflow of foreign matter into the first guide or the first recess can be reduced.

[0357] The first separation distance D1 may be greater than the fifth separation distance D5. That is, even if foreign matter is generated in the first region S1 or the like and moves outward due to gravity, it can be captured by the trap before flowing into the first guide or the first recess. This can improve the driving accuracy and reliability of the first camera actuator.

[0358] Furthermore, the second separation distance D2 may be greater than or less than the third separation distance D3, and the fourth separation distance D4 may be less than the first separation distance D1, which may improve the shock absorption and guiding effect.

[0359] Furthermore, the fifth separation distance D5 may be smaller than the first, second, third, fourth, and sixth separation distances (D1 to D4 and D6). This can prevent degradation of optical performance and prevent lens breakage. The sixth separation distance D6 can correspond to the fourth separation distance D4.

[0360] Referring to Table 3 below, Cases 1 to 3 may correspond to the structure of the second camera actuator according to a number of embodiments. The unit of separation distance may be mm.

[0361] (1) corresponds to the first separation distance D1. (2) corresponds to the second separation distance D2. (3) corresponds to the third separation distance D3. (4) corresponds to the fourth separation distance D4. (5) corresponds to the fifth separation distance D5. (6) corresponds to the sixth separation distance D6.

[0362] [Table 3]

[0363] Table 4 below shows the contact force results for Cases 1 to 3 when dropped.

[0364] [Table 4]

[0365] Table 5 below shows the HID simulation results for Cases 1 to 3.

[0366] [Table 5]

[0367] Table 6 below shows the actual REL (reliability) test results for the first to third cases.

[0368] [Table 6]

[0369] Referring to Tables 3 to 6, it can be seen that as the separation distances corresponding to the first to sixth separation distances become smaller, the amount of impact increases and the generation of foreign matter or particles increases. In particular, as described above, when the second camera actuator according to the embodiment has the separation distances, the generation of foreign matter may increase significantly in areas with separation distances other than the first separation distance. Figure 35 is a perspective view of the main barrel and trap portion of the second camera actuator according to yet another embodiment.

[0370] 35, a second camera actuator according to another embodiment may include a lens unit, a housing, a drive unit, a base unit, a substrate unit, and a stopper. Furthermore, the second camera actuator 1200 may further include a shielding can (not shown), an elastic unit (not shown), a trap unit (not shown), and a joint member (not shown). Except for the details described below, the details regarding the main barrel, trap unit, and moving assembly of the second camera actuator described above may be applied in the same manner.

[0371] In this embodiment, the trap portion may extend to the outer surface of the adjacent housing protrusion. For example, the first sub-trap portion may extend to the outer surface of the first sub-housing protrusion. And the third sub-trap portion DT2a may extend to the outer surface OS of the third sub-housing protrusion. This reduces the amount of impact when the outer surface OS of the first sub-housing protrusion (or the third sub-housing protrusion, 1232pr2a) comes into contact with the wing portion WP. Also, the inflow of foreign matter generated by the impact in the areas having the third to sixth separation distances may be more effectively reduced.

[0372] In an embodiment, at least one of the first sub-trap portion, the second sub-trap portion, the third sub-trap portion, and the fourth sub-trap portion may extend to the outer surface of at least one of the first sub-housing protrusion, the second sub-housing protrusion, the third sub-housing protrusion, and the fourth sub-housing protrusion.

[0373] For example, the first sub-trap portion may extend to the outer surface of the first sub-housing protrusion, the second sub-trap portion may extend to the outer surface of the second sub-housing protrusion, the third sub-trap portion DT2a may extend to the outer surface OS of the third sub-housing protrusion 1232pr2a, and the fourth sub-trap portion may extend to the outer surface of the fourth sub-housing protrusion.

[0374] FIG. 36 is a perspective view of a main barrel and a trap portion of a second camera actuator according to yet another embodiment.

[0375] 36, a second camera actuator according to another embodiment may include a lens unit, a housing, a drive unit, a base unit, a substrate unit, and a stopper. Furthermore, the second camera actuator 1200 may further include a shielding can (not shown), an elastic unit (not shown), a trap unit (not shown), and a joint member (not shown). Except for the details described below, the details regarding the main barrel, trap unit, and moving assembly of the second camera actuator described above may be applied in the same manner.

[0376] The first sub-trap portion may extend to an extension surface of the first sub-housing protrusion, and the third sub-trap portion may extend to an extension surface of the third sub-housing protrusion.

[0377] In an embodiment, at least one of the first sub-trap portion, the second sub-trap portion, the third sub-trap portion, and the fourth sub-trap portion may be extended to an extension surface of at least one of the first sub-housing protrusion, the second sub-housing protrusion, the third sub-housing protrusion, and the fourth sub-housing protrusion.

[0378] For example, the first sub-trap portion may extend to the extension surface or bottom surface of the first sub-housing protrusion. The second sub-trap portion may extend to the extension surface or bottom surface of the second sub-housing protrusion. The third sub-trap portion DT2a may extend to the extension surface US or top surface of the third sub-housing protrusion 1232pr2a. The fourth sub-trap portion may extend to the extension surface or top surface of the fourth sub-housing protrusion.

[0379] 37 and 38 are perspective views of a main barrel and a trap portion of a second camera actuator according to still another embodiment.

[0380] 37 and 38, a second camera actuator according to another embodiment may include a lens unit, a housing, a driving unit, a base unit, a substrate unit, and a stopper. Furthermore, the second camera actuator 1200 may further include a shielding can (not shown), an elastic unit (not shown), a trap unit (not shown), and a joint member (not shown). Except for the details described below, the same details regarding the main barrel, trap unit, and moving assembly of the second camera actuator described above may apply.

[0381] In one embodiment, the first sub-trap portion may be at least partially horizontally offset from the second sub-trap portion. For example, the first sub-trap portion and the second sub-trap portion may be located on the first inner surface. However, at least a portion of the first sub-trap portion may be located forward of or opposite the second sub-trap portion in the optical axis direction.

[0382] For example, the first sub-trap portion may be spaced apart from the rear end of the first inner surface by a predetermined distance GAP2, and the second sub-trap portion may be spaced apart from the front end of the first inner surface by a predetermined distance GAP2.

[0383] As a result, the first sub-trap portion may overlap with the second sub-trap portion in the horizontal direction at least in part, and the first sub-trap portion and the second sub-trap portion may not overlap with each other in the horizontal direction at least in part.

[0384] In addition, the third sub-trap portion may be at least partially horizontally offset from the fourth sub-trap portion. For example, the third and fourth sub-trap portions may be located on the second inner surface. However, at least a portion of the third sub-trap portion may be located forward of or opposite the fourth sub-trap portion in the optical axis direction.

[0385] For example, the third sub-trap portion may be spaced apart from the rear end of the second inner surface by a predetermined distance Gap1, and the fourth sub-trap portion may be spaced apart from the front end of the second inner surface by a predetermined distance Gap1.

[0386] As a result, the third sub-trap portion may overlap at least a portion of the fourth sub-trap portion in the horizontal direction, or the third sub-trap portion and the fourth sub-trap portion may not overlap at least a portion of the horizontal direction.

[0387] FIG. 39 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0388] As shown in FIG. 39, 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.

[0389] 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.

[0390] The camera module 1000 processes still or video image frames acquired by an image sensor in a photography mode or a video call mode.

[0391] 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 body of the mobile terminal.

[0392] 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.

[0393] 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.

[0394] The autofocus device 1510 may include one in a package of surface emitting laser elements as the light emitter.

[0395] 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.

[0396] The autofocus device 1510 may include a light emitting section including a vertical cavity surface emitting laser (VCSEL) semiconductor element, and a light receiving section such as a photodiode that converts optical energy into electrical energy.

[0397] FIG. 40 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0398] For example, FIG. 40 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera module 1000 according to the embodiment is applied.

[0399] 40, 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.

[0400] 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.

[0401] 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.

[0402] For example, if an object such as a lane marking, an adjacent vehicle, an obstacle, or an indirect road marking, such as a median strip, a curb, or a roadside tree, 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.

[0403] 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.

[0404] The camera sensor 2000 can process still or moving images obtained by an image sensor (eg, CMOS or CCD).

[0405] 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.

[0406] 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.

[0407] Although the above description has focused on the embodiments, these are merely illustrative and do not 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 within the housing along an optical axis; a drive unit that moves the first lens assembly; and a first stopper disposed on a first inner wall of the housing; the first stopper includes a first-1 stopper disposed on one side of the first inner wall of the housing and a first-2 stopper disposed on the other side of the first inner wall of the housing; When the first lens assembly moves, both the first-1 stopper and the first-2 stopper come into contact with the first lens assembly.

2. 2. The camera actuator according to claim 1, wherein the first-first stopper and the first-second stopper are spaced apart in a direction perpendicular to the optical axis direction.

3. The first lens assembly a housing for housing a lens; a guiding portion in which the ball portion is positioned in contact with the receiving portion; and The camera actuator according to claim 1 , further comprising: a lens protrusion portion that contacts the housing portion and corresponds to the guiding portion.

4. The guiding portion is located on one side of the receiving portion, The camera actuator according to claim 3 , wherein the lens protrusion is located on another side surface of the receiving portion.

5. 4. The camera actuator according to claim 3, wherein a length of the lens protrusion in a direction perpendicular to the optical axis direction is smaller than a length of the guiding portion in the direction perpendicular to the optical axis direction.

6. The camera actuator according to claim 3 , wherein the guiding portion and the lens protrusion have different distances from the first inner wall of the housing in the optical axis direction.

7. 4. The camera actuator of claim 3, wherein a distance between the first-first stopper and a guiding portion of the first lens assembly corresponds to a distance between the first-second stopper and the lens protrusion.

8. 2. The camera actuator of claim 1, wherein the first stopper includes first to third stoppers disposed on a first inner wall of the housing.

9. 9. The camera actuator according to claim 8, wherein the first-first stopper, the first-second stopper, and the first-third stopper are arranged so as to be shifted in a direction perpendicular to the optical axis direction.

10. a second lens assembly that moves within the housing along an optical axis; 9. The camera actuator according to claim 8, wherein the first to third stoppers come into contact with the second lens assembly when the second lens assembly moves in the optical axis direction.

Images