Camera actuator and camera module containing the same

Abstract

Embodiments of the present invention disclose a camera actuator comprising a housing; a first bobbin that moves in the optical axis direction within the housing; and a drive unit for moving the first bobbin, wherein the first bobbin comprises a first lens holder for housing a lens; a guiding portion facing the housing; and a bonding member disposed between the first lens holder and the guiding portion.

Description

Technical Field

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

Background Art

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

[0003] However, there is a problem of deterioration in the performance of the lens due to the long movement of the lens in the camera module.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a camera actuator and a camera module in which optical axis alignment (AA) with respect to a bobbin is facilitated and optical performance is improved.

[0005] In addition, embodiments of the present invention can provide a camera actuator and a camera module that provide efficient performance improvement by angle correction with respect to a first bobbin having a long moving distance or stroke.

[0006] In addition, embodiments of the present invention can provide a camera actuator and a camera module in which the bonding force between the lens holder of the bobbin and the guiding part is improved.

[0007] Embodiments of the present invention provide a camera actuator applicable to ultra-slim, ultra-compact, and high-resolution cameras.

[0008] The problems that the examples attempt to solve are not limited to those described here, and can also include the objectives and effects that can be understood from the means of solving the problems and the embodiments described below. [Means for solving the problem]

[0009] An embodiment of the present invention includes a camera actuator comprising a housing; a first bobbin disposed within the housing; and a drive unit for moving the first bobbin in the optical axis direction, wherein the first bobbin includes a first lens holder for housing a lens; a first guiding portion disposed on the side of the housing; and a bonding member disposed between the first lens holder and the first guiding portion.

[0010] The first lens holder includes a first surface that contacts the bonding member; The first guiding portion may include a second surface that contacts the bonding member.

[0011] The first surface includes a first groove, and the second surface of the first guiding portion may include a second groove.

[0012] The first groove and the second groove may overlap in the direction from the first surface toward the second surface.

[0013] The first surface includes a first projection disposed within the first groove, and the second surface may include a second projection disposed within the second groove.

[0014] The first projection and the second projection may overlap in the direction from the first surface to the second surface.

[0015] The first guiding portion includes a third surface located opposite to the second surface; the third surface of the first guiding portion faces the side of the housing and may include a recess in which a ball is positioned.

[0016] The side portion of the housing may include a first side portion having an inner surface facing the first guiding portion of the first bobbin and a second side portion facing the first side portion.

[0017] The housing includes an upper surface and a lower surface positioned between the first side and the second side, the upper surface including a first hole; and the lower surface including a second hole;

[0018] The bonding member may be exposed by at least one of the first hole and the second hole.

[0019] The first portion of the first guiding section may be exposed by at least one of the first hole and the second hole.

[0020] The second portion located on the side of the first portion of the first guiding section may overlap with the housing in the direction from the first hole to the second hole.

[0021] The bonding member may be positioned between the first projection and the second projection, and between the first groove and the second groove.

[0022] The system includes a second bobbin positioned at a distance from the first bobbin in the direction of the optical axis, the second bobbin including a second lens holder and a second guiding portion extending in a first direction from the second lens holder and directly connected to the second lens holder.

[0023] The camera actuator according to the embodiment includes a housing; a bobbin disposed within the housing; and a driving unit that moves the bobbin in the optical axis direction. The bobbin includes a lens holder; and a guiding unit disposed on a side portion of the housing. The lens holder includes a first surface, and the guiding unit includes a second surface that is coupled to the first surface. The first surface and the second surface are disposed so as to be inclined with respect to each other.

[0024] The optical axis direction and the second surface may be disposed so as to be inclined with respect to each other.

[0025] The bobbin includes a bonding member disposed between the lens holder and the guiding unit. The first bonding member and the second bonding member that are spaced apart from each other in the optical axis direction of the bonding member may have different thicknesses.

[0026] The third bonding member and the fourth bonding member that are spaced apart from each other in a direction perpendicular to the optical axis direction of the bonding member may have different thicknesses.

[0027] The camera actuator according to the embodiment includes a housing; a bobbin disposed within the housing; and a driving unit that moves the bobbin in the optical axis direction. The bobbin includes a lens holder that houses a lens; and a guiding unit disposed on a side portion of the housing. The central axis of the lens holder is adjusted with respect to the guiding unit.

[0028] The bobbin includes a bonding member disposed between the lens holder and the guiding unit. The optical axis of the lens holder may be adjusted with respect to the guiding unit.

Advantages of the Invention

[0029] According to an embodiment of the present invention, there is provided a camera actuator and a camera module in which optical axis alignment (AA) with respect to a bobbin is facilitated and optical performance is improved.

[0030] Furthermore, embodiments of the present invention can embody camera actuators and camera modules that provide efficient performance improvements through angle correction for a first bobbin with a long travel distance or stroke.

[0031] Furthermore, embodiments of the present invention can realize camera actuators and camera modules in which the coupling force between the bobbin lens holder and the guiding part is improved.

[0032] Embodiments of the present invention can embody a camera actuator applicable to ultra-slim, ultra-compact, and high-resolution cameras.

[0033] The diverse yet beneficial advantages and effects of the present invention are not limited to those described above and will become more readily apparent in the process of describing specific embodiments of the present invention. [Brief explanation of the drawing]

[0034] [Figure 1] This is a perspective view of a camera module according to an embodiment.

[0035] [Figure 2] This is an exploded perspective view of the camera module according to the embodiment.

[0036] [Figure 3] Figure 1 shows the view from AA'.

[0037] [Figure 4] This is a perspective view of the second camera actuator according to the embodiment.

[0038] [Figure 5] This is an exploded perspective view of the second camera actuator according to the embodiment.

[0039] [Figure 6] Figure 4 shows a cross-sectional view taken at DD'.

[0040] [Figure 7a] This is a perspective view of the housing of the second camera actuator according to the embodiment. [Figure 7b] This is a perspective view of the housing of the second camera actuator according to the embodiment. [Figure 7c] This is a perspective view of the housing of the second camera actuator according to the embodiment.

[0041] [Figure 8] This is a diagram illustrating the various drives of the lens assembly according to the embodiment.

[0042] [Figure 9] This is a diagram illustrating the various drives of the lens assembly according to the embodiment.

[0043] [Figure 10] This is a diagram illustrating the operation of the second camera actuator according to the embodiment.

[0044] [Figure 11] This is a perspective view of a part of the configuration of the second camera actuator according to the embodiment.

[0045] [Figure 12] This is a drawing illustrating an optical drive coil, optical drive magnet, and yoke according to an embodiment.

[0046] [Figure 13] This diagram illustrates the movement of the optical drive magnet by the drive unit according to the embodiment.

[0047] [Figure 14] This is a perspective view of the first lens assembly, first joining member, second joining member, and second lens assembly according to the embodiment.

[0048] [Figure 15] This is an exploded perspective view of the first lens assembly according to the embodiment.

[0049] [Figure 16] This is a perspective view of the first lens assembly according to an embodiment.

[0050] [Figure 17] This is another perspective view of the first lens assembly according to the embodiment.

[0051] [Figure 18] This is a diagram illustrating the structure of the first lens holder and guiding section in the first lens assembly according to the embodiment.

[0052] [Figure 19] Figure 16 shows a view of the section cut at line II'.

[0053] [Figure 20] This is a top view of the second camera actuator according to the embodiment.

[0054] [Figure 21] This is a diagram illustrating the inside of the housing of the second camera actuator according to the embodiment.

[0055] [Figure 22] This is a bottom view of the second camera actuator according to the embodiment.

[0056] [Figure 23] This is a diagram illustrating the inside of the housing of the second camera actuator according to the embodiment.

[0057] [Figure 24] This diagram illustrates the connection between the lens holder and the guiding section in the first lens assembly of the second camera actuator according to the embodiment.

[0058] [Figure 25]This graph illustrates the SFR (Single Frame Rate) for wide and telephoto lenses after active alignment of the optical axis by moving the fixed assembly and the first lens assembly.

[0059] [Figure 26] This is a top view of a second camera actuator according to another embodiment.

[0060] [Figure 27] This is a top view of a second camera actuator according to another embodiment.

[0061] [Figure 28] This is a schematic diagram illustrating a circuit board according to an embodiment.

[0062] [Figure 29] This is a perspective view of a mobile terminal device to which the camera module according to the embodiment is applied.

[0063] [Figure 30] This is a perspective view of a vehicle to which the camera module according to the embodiment is applied. [Modes for carrying out the invention]

[0064] While the present invention can be modified in various ways and has many embodiments, specific embodiments will be illustrated and explained in the drawings. However, this should not be understood as limiting the present invention to specific embodiments, but rather as including all modifications, equivalents, or substitutes 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 a variety of components, but the components are not limited by the terms. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be named the first component, and similarly, the first component may be named the second component. and / or this term may include a combination of multiple related described items or any of the multiple related described items.

[0066] When it is mentioned that one component is "linked" or "connected" to another component, it should be understood that it may be directly linked or connected to the other component, but there may also be other components in between. Conversely, when it is mentioned that one component is "directly linked" or "directly connected" to another component, it should be understood that there are no other components in between.

[0067] The terminology used in this application is used solely to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as “includes” or “having” are intended to specify the existence of features, figures, stages, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preemptively exclude the possibility of the existence or addition of one or more other features, figures, stages, operations, components, parts, or combinations thereof.

[0068] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally 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 as having the meaning consistent with their meaning in the context of the relevant art, and not as ideal or overly formal unless expressly defined herein.

[0069] The embodiments will be described in detail below with reference to the attached drawings. However, regardless of the reference numerals used in the drawings, identical or corresponding components will be assigned the same reference numerals, and redundant explanations will be omitted.

[0070] Figure 1 is a perspective view of the camera module according to the embodiment, Figure 2 is an exploded perspective view of the camera module according to the embodiment, and Figure 3 is a view of Figure 1 as seen from AA'.

[0071] Referring to Figures 1 and 2, the camera module 1000 according to the embodiment may consist of a cover CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. Here, the first camera actuator 1100 may be used interchangeably with the first actuator, and the second camera actuator 1200 may be used interchangeably with 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. This allows for easy protection of the first camera actuator 1100 and the second camera actuator 1200 within the cover CV.

[0074] Furthermore, the first camera actuator 1100 may be an OIS (Optical Image Stabilizer) actuator. For example, the first camera actuator 1100 can move an optical element 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 positioned in a predetermined lens barrel (not shown). The 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. In one embodiment, the first camera actuator 1100 can change the path of light vertically through an internal optical element (e.g., a prism or mirror). For example, the optical element can change the light from a first direction (X-axis direction) to a third direction (Z-axis direction). Or the optical element can change the light from a first axis to a second axis. With such a configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be placed inside the mobile terminal through the change of the light path, and magnification, autofocus (AF), zoom (Zoom), and OIS functions can be performed.

[0077] However, the first camera actuator 1100 is not limited to this and can change the optical path vertically or to a predetermined angle multiple times.

[0078] The second camera actuator 1200 may be positioned at the rear end of the first camera actuator 1100. The second camera actuator 1200 can be coupled to the first camera actuator 1100. The coupling between them can be achieved in various ways.

[0079] Furthermore, the second camera actuator 1200 may be a zoom actuator or an autofocus (AF) actuator. For example, the second camera actuator 1200 may support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an autofocus function or a zoom function.

[0080] Then, one or more lenses may move independently or individually along the optical axis, and the circuit board 1300 may be positioned at the rear end of the second camera actuator 1200.

[0081] The circuit board 1300 can be electrically connected to the second camera actuator 1200 and the first camera actuator 1100. Furthermore, there may be multiple circuit boards 1300.

[0082] The camera module according to the embodiment may consist of one or more camera modules. For example, the multiple camera modules may include a first camera module and a second camera module.

[0083] The first camera module may include one or more 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 is housed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving the lens. The actuator may be a voice coil motor, a microactuator, a silicon actuator, etc., and may be applied in various ways, such as electrostatic, thermal, bimorph, or electrostatic force. In this specification, the camera actuator may also be referred to as an actuator, etc. A camera module consisting of multiple camera modules may be implemented in various electronic devices such as mobile terminals. Furthermore, the actuator may be a device for moving or tilting lenses and optical elements. However, in the following, the actuator will be described as a concept that includes lenses and optical elements. Furthermore, the actuator may be called a "lens transfer device," "lens moving device," "optical element transfer device," or "optical element moving device."

[0085] Referring to Figure 3, the camera module according to this embodiment may include a first camera actuator 1100 that performs OIS (Optical Identification System) function and a second camera actuator 1200 that performs zooming and AF (Autofocus) functions.

[0086] Light can enter the camera module or the first camera actuator through an aperture region located on the upper surface of the first camera actuator 1100. That is, light enters the interior of the first camera actuator 1100 primarily in a vertical direction (e.g., along the X-axis, relative to the incident light), and the light path can be changed along the optical axis direction (e.g., along the Z-axis) through an optical member. The light can then pass through the second camera actuator 1200 and be incident on the image sensor IS located at one end of the second camera actuator 1200 (PATH). In this specification, the Z-axis direction or the third direction is described as the optical axis direction as follows. The first direction and the X-axis direction are described as vertical. The second direction and the Y-axis direction are described as horizontal.

[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 used interchangeably with the second axis direction, etc. The second direction is the Y-axis direction in the drawing and may be used interchangeably with the first axis direction, etc. The second direction is perpendicular to the first direction. The third direction may be used interchangeably with the Z-axis direction, third axis direction, etc. in the drawing and is 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 perpendicular to the optical axis. Furthermore, in the following descriptions of the first and second camera actuators, the optical axis direction is the third direction (Z-axis direction), and this will be used as the basis for the following descriptions.

[0088] Furthermore, in this specification, the inside can be the direction from the cover CV toward the first camera actuator, and the outside can be the opposite direction from the inside. That is, the first and second camera actuators can be located inside the cover CV, and the cover CV can be located outside the first or second camera actuator.

[0089] Furthermore, 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 path of light. In other words, the camera module according to the embodiment can expand the light path while minimizing the thickness of the camera module in response to the change in the light path. Moreover, it should be understood that the second camera actuator can provide a wide range of magnification by controlling the focus and other parameters in the expanded light path.

[0090] Furthermore, the camera module according to the embodiment can realize OIS through control of the optical path via the first camera actuator, thereby minimizing the occurrence of decentering and tilt phenomena and enabling the best possible optical characteristics.

[0091] Furthermore, the second camera actuator 1200 may include an optical system and a lens drive unit. For example, the second camera actuator 1200 may be equipped with at least one of the first lens assembly, the second lens assembly, and the third lens assembly.

[0092] Furthermore, the second camera actuator 1200 is equipped with a coil and a magnet, enabling it to 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 this. For example, the third lens assembly can perform the function of a focator, focusing light at a specific position, and the first lens assembly can perform the function of a variator, re-imaging the image formed by the third lens assembly (the focator) at another location. On the other hand, the first lens assembly may experience large changes in magnification due to changes in the distance to the subject or image distance, and the first lens assembly (the variator) can play an important role in the change in the focal length or magnification of the optical system. On the other hand, the image point formed by the first lens assembly (the variator) may differ slightly depending on the position. For this reason, the second lens assembly can perform a position compensation function for the image formed by the variator. For example, the second lens assembly can perform a compensator function, accurately imaging the image point formed by the first lens assembly (the variator) at the actual image sensor position. For example, the first and second lens assemblies can be driven by electromagnetic force resulting from the interaction of a coil and a magnet. The above description can be applied to the lens assemblies described later. Furthermore, the first to third lens assemblies can move along the optical axis, i.e., the third direction. The first to third lens assemblies can move independently or dependently in the third direction. In this invention, the first and second lens assemblies can move along the optical axis. The third lens assembly can be located at the front end of the first lens assembly or the rear end of the second lens assembly. The third lens assembly does not have to move along the optical axis; that is, the third lens assembly can be a fixed part. The first and second lens assemblies can be movable parts.

[0094] On the other hand, when the OIS actuator and the AF / Zoom actuator are arranged according to the embodiment of the present invention, interference of the magnetic field with the AF / Zoom magnet can be prevented when the OIS is driven. Since the first drive magnet of the first camera actuator 1100 is arranged separately from the second camera actuator 1200, interference of the magnetic field 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 tremor correction.

[0095] In particular, the optical element RM can be tilted along the X-axis or Y-axis by the first camera actuator 1100. This allows for easy modification of the optical path by tilting along the X-axis or Y-axis.

[0096] The optical component RM can be mounted on a holder for the first camera actuator or the like. In this embodiment, the optical component RM may consist of a mirror or a prism. In the following illustration, a prism is used as the reference, but it may consist of multiple lenses as in the previously described embodiment. Alternatively, the optical component RM may consist of multiple lenses and a prism or mirror. Furthermore, the optical component RM may include a reflective section located inside, but is not limited to this.

[0097] The optical element RM can be tilted along the X-axis or Y-axis by the drive of the VCM or the like by the first camera actuator 1100. That is, OIS can be realized while the optical element RM tilts or rotates with respect to the Y-axis or X-axis direction.

[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 of Figure 4 cut at DD', Figures 7a, 7b, and 7c are perspective views of the housing of the second camera actuator according to the embodiment, Figures 8 and 9 are diagrams illustrating each drive of the lens assembly according to the embodiment, and Figure 10 is a diagram illustrating the drive of the second camera actuator according to the embodiment.

[0099] Referring to Figures 4 to 6, the second camera actuator 1200 (or camera device or zoom lens transfer device or zoom lens moving device or lens transfer device) according to the embodiment may include a lens section 1220, a housing 1230, a drive section 1250, a base section 1260, a substrate section 1270, and stoppers ST1 and ST2. Furthermore, the second camera actuator 1200 may further include a shield can (not shown), an elastic section (not shown), and a joining member (not shown).

[0100] Furthermore, as will be described later, the lens group can move along the optical axis. The lens group can also move along the optical axis together with the lens assembly. In this case, the second camera actuator may include a moving part that moves along the optical axis like the lens group, and a fixed part that is fixed relative to the moving part and does not move along the optical axis. In this embodiment, the moving part may include the lens assembly (e.g., the first and second lens assemblies) and optical drive magnets (first and second drive magnets). The fixed part may include the housing, substrate, optical drive coils (first and second coils), and Hall sensors. Furthermore, a drive magnet may be placed on either the moving part or the fixed part, and a drive coil may be placed on the other. Corresponding to this description, the travel distance of the lens assembly described later may correspond to the travel distance of the moving part.

[0101] A shield can (not shown) is located in one area of ​​the second camera actuator 1200 (for example, the outermost area) and can be positioned to surround the components described later (lens section 1220, housing 1230, drive section 1250, base section 1260, substrate section 1270, and image sensor IS located on the circuit board at the rear end).

[0102] Such a shielding can (not shown) can block or reduce externally generated electromagnetic waves. Consequently, the occurrence of malfunctions in the drive unit 1250 may be reduced.

[0103] The lens unit 1220 can be located inside a shield can (not shown). The lens unit 1220 can move along a third direction (Z-axis direction or optical axis direction). Accordingly, the aforementioned AF function or zoom function can be performed.

[0104] Furthermore, the lens portion 1220 can be located within the housing 1230. This allows at least a portion of the lens portion 1220 to move within the housing 1230 along the optical axis direction or a third direction (Z axis direction).

[0105] Specifically, the lens section 1220 may include a lens group 1221 and a movable assembly 1222.

[0106] First, lens group 1221 can contain at least one lens. While lens group 1221 can consist of multiple lenses, the following explanation will assume a single lens.

[0107] The lens group 1221 is coupled to the movable assembly 1222 and can move in a third direction (Z-axis direction) by the electromagnetic force generated by the first magnet 1252a and the second magnet 1252b which are coupled to the movable 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 sequentially along the optical axis. Furthermore, the lens group 1221 may further include a fourth lens group. The fourth lens group may be located at the rear end of the third lens group 1221c.

[0109] The first lens group 1221a can be coupled and fixed to the first-1 housing (or fixed assembly). In other words, the first lens group 1221a may not move along the optical axis.

[0110] The second lens group 1221b can be moved in a third direction or in the optical direction in conjunction with the first lens assembly 1222a. Magnification adjustment can be performed by moving the first lens assembly 1222a and the second lens group 1221b.

[0111] The third lens group 1221c can be coupled with the second lens assembly 1222b and moved in the third direction or along the optical axis. Focusing or autofocus can be performed by moving the third lens group 1221.

[0112] However, the number of lens groups is not limited to this, and the aforementioned fourth lens group may be absent, or additional lens groups other than the fourth lens group 1121d may be further arranged.

[0113] The movable assembly 1222 may include an aperture region surrounding the lens group 1221. Such a movable assembly 1222 may be used in combination with the first and second lens assemblies. The movable assembly 1222 or the lens assembly can move along the optical axis direction (Z axis direction) within the housing 1230. The movable assembly 1222 can be coupled to the lens group 1221 in various ways. The movable assembly 1222 may also include grooves on its sides, through which it can be coupled to the first magnet 1252a and the second magnet 1252b. A coupling material or the like may be applied to the grooves.

[0114] Furthermore, the movable assembly 1222 may be coupled to elastic parts (not shown) at its upper and rear ends. This allows the movable assembly 1222 to be supported by the elastic parts (not shown) as it moves in a third direction (Z-axis direction). That is, the movable assembly 1222 can be maintained in the third direction (Z-axis direction) while its position is maintained. The elastic parts (not shown) may consist of various elastic elements such as plate springs.

[0115] The movable assembly 1222 is located within the housing 1230 and may include a first lens assembly 1222a and a second lens assembly 1222b.

[0116] The region on the second lens assembly 1222b on which the third lens group is mounted can be located at the rear end of the first lens assembly 1222a. In other words, the region on the second lens assembly 1222b on which the third lens group 1221c is mounted can be located between the region on the first lens assembly 1222a on which the second lens group 1221b is mounted and the image sensor.

[0117] The first lens assembly 1222a and the second lens assembly 1222b can face the first guide groove and the second guide groove, respectively. The first guide groove and the second guide groove can be located on the first side 1232a and the second side 1232b of the housing 1230 (or the first-second housing), which will be described later. For example, the first guide groove and the second guide groove can be formed on the first and second sides of the housing, respectively. Alternatively, a member containing the first guide groove and the second guide groove can be located on the first and second sides of the housing, respectively.

[0118] Optical drive 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 used interchangeably with the "first bobbin". The second lens assembly 1222b may be used interchangeably with the "second bobbin". The first bobbin 1222a may include a guiding section, a first lens holder, and a bonding member. A detailed explanation of these will follow later.

[0119] The housing 1230 may be positioned between the lens portion 1220 and the shield can (not shown). The housing 1230 may also be positioned to surround the lens portion 1220.

[0120] Housing 1230 may include the first-first housing 1231 and the first-second housing 1232. The first-first housing 1231 is coupled to the first lens group 1221a and can also be coupled to the first camera actuator described above. The first-first housing 1231 may be positioned in front of the first-second housing 1232. The first-first housing may be called a "fixed assembly," "fixed lens assembly," "fixed lens housing," etc. The first-second housing may be called a "main barrel," "lens barrel," "barrel," etc.

[0121] The first-second housing 1232 can be located at the rear end of the first-first housing 1231. The first and second lens assemblies and the lens section 1220 can be mounted inside the first-second housing 1232.

[0122] The housing 1230 (or the first-to-second housing 1232) may have holes formed on its sides. A first coil 1251a and a second coil 1251b may be placed in these holes. The holes may be positioned to correspond to the grooves of the aforementioned movable assembly 1222. In this case, there may be multiple first coils 1251a and second coils 1251b.

[0123] As an embodiment, the housing 1230 (in particular, the first-to-second housing 1232) may include a first side portion 1232a and a second side portion 1232b. The first side portion 1232a and the second side portion 1232b may be located corresponding to each other. For example, the first side portion 1232a and the second side portion 1232b may be arranged symmetrically with respect to a third direction. Optical drive coils 1251 may be located on the first side portion 1232a and the second side portion 1232b. A substrate portion 1270 may be placed on the outer surfaces of the first side portion 1232a and the second side portion 1232b. In other words, 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.

[0124] Furthermore, the first guide groove and the second guide groove can be located on the first side 1232a and the second side 1232b of the housing 1230 (in particular, the first-to-second housing 1232).

[0125] The first and second guide grooves may be at least one groove (e.g., a guide groove) or recess. A first ball B1 or a second ball B2 may be placed in the first or second guide groove of the groove or recess. The second camera actuator 1200 may further include a ball section. The ball section may include a first ball B1 and a second ball B2. The ball section allows the first and second lens assemblies to move along the optical axis. In this case, the ball section may include at least one rolling member, a ball. At least one ball may move along the first and second guide grooves. This allows the first ball B1 or the second ball B2 to move in a third direction (Z-axis direction) within the first or second guide groove.

[0126] Alternatively, the first ball B1 or the second ball B2 can move in a third direction along a guide or rail that is coupled to the inside of the first side portion 1232a of the housing 1230, or along a guide or rail that is coupled to the inside of the second side portion 1232b of the housing 1230.

[0127] This allows the first lens assembly 1222a and the second lens assembly 1222b to move in a third direction or along the optical axis. In this case, the second lens assembly 1222b may be positioned more adjacent to or closer to the image sensor than the first lens assembly 1222a.

[0128] According to the embodiment, the first ball B1 can contact the first lens assembly 1222a. 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).

[0129] Furthermore, the guide grooves may include first guide grooves GG1a and GG1b facing the first recess. The guide grooves may also 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 extend in a third direction (Z-axis direction). There may be multiple first guide grooves GG1a and GG1b and multiple second guide grooves GG2a and GG2b. The multiple first guide grooves (or second guide grooves) may have different shapes from each other. For example, one may be a groove with a sloping side surface, while the other has a side surface perpendicular to the bottom surface. Multiple balls with at least partially different diameters can be positioned within the multiple guide grooves.

[0130] The second magnet 1252b can be positioned to face the second coil 1251b. Similarly, the first magnet 1252a can be positioned to face the first coil 1251a.

[0131] 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, the long stroke described later can also be realized when the first coil and the second coil are a single coil.

[0132] As an example, the optical drive coil 1251 may consist of subcoils arranged sequentially along the optical axis direction (Z axis direction). For example, multiple subcoils may be arranged sequentially along the optical axis direction on each side of the main barrel 1232.

[0133] In this embodiment, the optical drive coil 1251 may include a first drive unit and a second drive unit. The first drive unit can provide a driving force to move the first lens assembly 1222a along the optical axis. The first drive unit may include a first coil 1251a and a first magnet 1252a. The first drive unit may also include a first drive coil and a first drive magnet. Thus, the first coil 1251a may be called the "first drive coil," and the first magnet 1252a may be called the "first drive magnet."

[0134] The second drive unit can provide a driving force to move the second lens assembly 1222b along the optical axis. The second drive unit may include a second coil 1251b and a second magnet 1252b.

[0135] Furthermore, the second drive unit may include a second drive coil and a second drive magnet. Thus, the second coil 1251b may be called the "second drive coil," and the second magnet 1252b may be called the "second drive magnet."

[0136] 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 movable assembly 1222. The second elastic member (not shown) may be coupled to the lower surface of the movable assembly 1222. Furthermore, the first elastic member (not shown) and the second elastic member (not shown) may be formed from leaf springs, as described above. Furthermore, the first elastic member (not shown) and the second elastic member (not shown) can provide elasticity to the movement of the movable assembly 1222. However, the elastic portion may be positioned in a variety of locations, not limited to those described above.

[0137] The drive unit 1250 can provide a driving force to move the lens unit 1220 in a third direction (Z-axis direction). Such a drive unit 1250 may include an optical drive coil 1251 and an optical drive magnet 1252. The optical drive coil 1251 and the optical drive magnet 1252 can be positioned facing each other. For example, the first drive coil 1251a and the first drive magnet 1252a can be positioned facing each other. Also, the second drive coil 1251b and the second drive magnet 1252b can be positioned facing each other. The first drive coil 1251a may be positioned on one side along the second direction within the housing, and the second drive coil 1251a may be positioned on the other side along the second direction within the housing.

[0138] Furthermore, the drive unit 1250 may further include a Hall sensor unit. The Hall sensor unit 1253 includes at least one first Hall sensor 1253a and a second Hall sensor 1253b, and may be located inside or outside the optical drive coil 1251.

[0139] The moving assembly can be moved in a third direction (Z-axis direction) by the electromagnetic force formed between the optical drive coil 1251 and the optical drive magnet 1252.

[0140] The optical drive coil 1251 may include a first coil 1251a and a second coil 1251b. As mentioned above, the first coil 1251a and the second coil 1251b may consist of multiple sub-coils. The first coil 1251a and the second coil 1251b may be placed in holes formed in the side of the housing 1230. The first coil 1251a and the second coil 1251b may be electrically connected to the substrate portion 1270. This allows the first coil 1251a and the second coil 1251b to receive current and other powers through the substrate portion 1270.

[0141] The optical drive coil 1251 can be connected to the substrate portion 1270 via a yoke or the like.

[0142] In another example, the optical drive coil 1251 is a fixed element together with the substrate portion 1270. In contrast, the optical drive magnet 1252 is a movable element that moves in the optical axis direction (Z axis direction) together with the first and second assemblies.

[0143] The optical drive magnet 1252 may include a first magnet 1252a and a second magnet 1252b.

[0144] As an example, the first coil 1251a may include a first subcoil SC1a and a second subcoil SC2a. The first subcoil SC1a and the second subcoil SC2a may be arranged sequentially in the optical axis direction. The first subcoil SC1a may be positioned more adjacent to the first camera actuator than the second subcoil SC2a.

[0145] The second coil 1251b may include a third subcoil SC1b and a fourth subcoil SC2b. The third subcoil SC1b and the fourth subcoil SC2b may be arranged sequentially in the optical axis direction. The third subcoil SC1b may be positioned more adjacent to the first camera actuator than the fourth subcoil SC2b.

[0146] The first magnet 1252a can face the first subcoil SC1a and the second subcoil SC2a. The second magnet 1252b can face the third subcoil SC1b and the fourth subcoil SC2b. The first subcoil SC1a can be positioned so as to overlap with the third subcoil SC1b in a second direction. The second subcoil SC2a can be positioned so as to overlap with the fourth subcoil SC2b in a second direction. In this way, the first magnet 1252a and the second magnet 1252b can be arranged so as to face each other identically with respect to two subcoils.

[0147] Furthermore, the coils of the first and second drive units in the second camera actuator may be described as including the first subcoil SC1a, SC1b and the second subcoil SC2a, SC2b. However, in this specification, the subcoils that drive the second lens assembly are described interchangeably with the third and fourth subcoils.

[0148] The first subcoil SC1a and the second subcoil SC2a can be spaced apart from each other in the optical axis direction. The first subcoil SC1a and the second subcoil SC2a can be connected in parallel to each other. For example, one end of the first subcoil SC1a can be connected to one end of the second subcoil SC2a at one node. Then, the other end of the first subcoil SC1a can be connected to the other end of the second subcoil SC2a at another node. That is, the current applied to the first subcoil SC1a and the second subcoil SC2a can be distributed to each subcoil. As a result, the first subcoil SC1a and the second subcoil SC2a can be electrically connected in parallel, which can reduce heat generation.

[0149] 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 surface of the first drive magnet 1252a and the inner surface of the second drive magnet 1252b may have either a north pole or a south pole (e.g., a north pole). The outer surface of the first drive magnet 1252a and the outer surface of the second drive magnet 1252b may have the other of a north pole or a south pole (e.g., a south pole). Here, the inner surface is the surface adjacent to the optical axis with respect to the optical axis, and the outer surface may be the surface farther from the optical axis. Also, the first magnet 1252a may have a first pole on the first surface BSF1 facing the optical drive coil (e.g., the first coil). And the first magnet 1252a may have a second pole on the second surface BSF2, which is the opposite surface of the first surface BSF1. The second magnet 1252b may have a first pole on the first surface BSF1 facing the optical drive coil (e.g., the second coil). The second magnet 1252b may also have a second pole on the second surface BSF2, which is the opposite surface to the first surface 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.

[0150] Alternatively, the first drive magnet and the second drive magnet may have a structure in which the north pole / south pole or south pole / north pole are sequentially arranged along the optical axis.

[0151] Furthermore, 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 to each other. For example, one end or the other end of the third subcoil SC1b may be connected to one end or the other end of the fourth subcoil SC2b at a single node.

[0152] The first magnet 1252a and the second magnet 1252b may be positioned in the aforementioned grooves of the moving assembly 1222 and may be positioned to correspond to the first coil 1251a and the second coil 1251b. The optical drive magnet 1252 can then be coupled with the first and second lens assemblies (or moving assemblies) together with the yoke described later.

[0153] The base portion 1260 can be positioned between the lens portion 1220 and the image sensor in the circuit board. Components such as filters can be fixed to the base portion 1260. The base portion 1260 can also be arranged to surround the aforementioned image sensor. With such a configuration, the image sensor is free from foreign matter, and thus the reliability of the element can be improved. However, this is omitted in some of the following drawings for explanation.

[0154] Furthermore, 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 move the lenses according to a control signal from a predetermined control unit to perform an autofocus function or a zoom function.

[0155] The second camera actuator can be fixed zoom or continuous zoom. For example, the second camera actuator can provide movement of the lens group 1221.

[0156] Furthermore, the second camera actuator may consist 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 include at least one of a third lens assembly (not shown) and a guide pin (not shown). The previously described provisions may apply to this. This allows the second camera actuator to perform a high-magnification zoom function through the drive unit.

[0157] The image sensor can be located inside or outside the second camera actuator. In one embodiment, as shown in the figure, the image sensor can be located outside the second camera actuator. For example, the image sensor can be located on a circuit board. The image sensor can receive light and convert the received light into an electrical signal. The image sensor may also consist of multiple pixels in an array configuration. Furthermore, the image sensor can be located on the optical axis.

[0158] The substrate portion 1270 can be in contact with the side of the housing. For example, the substrate portion 1270 is located on the outer surface of the first side (first side) and the outer surface of the second side (second side) of the housing, particularly the first and second housings, and can be in contact with the first and second sides.

[0159] The second camera actuator may further include first stoppers ST1a, ST1b, ST1c located at one end (or front end) and second stoppers ST2a, ST2b located at the other end (or rear end) within the housing (or first-second housing 1232).

[0160] The first stopper ST1 can be located at one end of the housing. For example, the first stopper ST1 can be located at the end of the first-to-second housing or the main barrel 1232 in the opposite direction in the optical axis direction. In an embodiment, the first stopper ST1 can be located on the inner wall or inner wall of the housing or the main barrel 1232. The first stopper ST1 can be located on the first inner wall of the main barrel 1232, of which the first and second inner walls face each other along the optical axis direction. The first stopper ST1 can also include a first-to-first stopper ST1a located on one side and a first-to-second stopper ST1b located on the other side. For example, the first-to-first stopper ST1a may be located on one side of the first inner wall, and the first-to-second stopper ST1b may be located on the other side of the first inner wall. The first-to-first stopper ST1a may be located adjacent to the first side, and the first-to-second stopper ST1b may be located adjacent to the second side. One side and the other side may mean one side and the opposite side in the second direction.

[0161] Alternatively, the first-first stopper ST1a may overlap with the guiding portion of the first lens assembly in the optical axis direction. The first-second stopper ST1b may overlap with the lens projection of the first lens assembly in the optical axis direction.

[0162] Furthermore, the first stopper ST1 may include first- to third stoppers ST1c positioned on the other side of the main barrel 1232. The first- to third stoppers ST1c can be positioned so as to overlap with the guiding portion of the second lens assembly 1222b in the optical axis direction. The first- to second stoppers ST1b can be positioned horizontally or in a second direction between the first- to third stoppers ST1c and the first- to first stopper ST1a.

[0163] Furthermore, the second stopper ST2 may be located at the other end of the first-to-second housing or the main barrel 1232. For example, the second stopper ST2 may be located at the end in the optical axis direction of the first-to-second housing or the main barrel 1232. In an embodiment, the second stopper ST2 may be located on the inner wall or inner wall of the housing or the main barrel 1232. The second stopper ST2 may be located on the second inner wall of the main barrel 1232, where the first and second inner walls 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.

[0164] Furthermore, the second stopper ST2 may include a second-first stopper ST2a positioned on one side and a second-second stopper ST2b positioned on the other side. The second-first stopper ST2a may be positioned adjacent to the first side. The second-second stopper ST2b may be positioned adjacent to the second side. For example, the second-first stopper ST2a may be positioned on one side of the first inner wall, and the second-second stopper ST2b may be positioned on the other side of the first inner wall.

[0165] Referring to Figures 7a, 7b, and 7c, as previously mentioned, the housing 1230 (in particular, the first-to-second housing 1232) may include a first side portion 1232a and a second side portion 1232b. The first side portion 1232a and the second side portion 1232b may be located corresponding to each other. For example, the first side portion 1232a and the second side portion 1232b may be arranged symmetrically with respect to a third direction. A second drive coil may be located in the first side portion 1232a and the second side portion 1232b. A second substrate portion may be placed on the outer surfaces of the first side portion 1232a and the second side portion 1232b. The second substrate portion may be located outside the drive coil and may be electrically connected to the drive coil.

[0166] For example, a first substrate can be positioned on the outer surface of the first side portion 1232a, and a second substrate can be positioned on the outer surface of the second side portion 1232b.

[0167] Furthermore, first guide grooves GG1a and GG1b, on which the first ball is placed, can be located on the inner surface (or first inner wall) of the first side portion 1232a. The first guide grooves GG1a and GG1b can face the first recess described above. Similarly, second guide grooves GG2a and GG2b, on which the second ball is placed, can be located on the inner surface (second inner wall) of the second side portion 1232b. The second guide grooves can face the second recess described above.

[0168] Furthermore, the first side portion 1232a may include a first side hole 1232ah. A first magnet can be positioned in the first side hole 1232ah. Additionally, the length of the first side hole 1232ah may be shorter than that of the first coil in the first direction.

[0169] Furthermore, the second side portion 1232b may include a second side hole 1232bh. A second magnet can be positioned in the second side hole 1232bh. In addition, the second side hole 1232bh may be shorter in length in the first direction than the second coil.

[0170] As an example, in the housing 1232, the first side portion 1232a may have an inner surface facing the guiding portion of the first lens assembly. The guiding portion of the first lens assembly (first guiding portion) may be located on the side portion (first side portion) of the housing. The second side portion 1232b may also have an inner surface facing the first side portion 1232a. As a result, the inner surface of the second side portion 1232b may face the second lens assembly. The guiding portion of the second lens assembly (second guiding portion) may be located on the side portion (second side portion) of the housing.

[0171] Then, a first guide groove and a second guide groove, on which a ball is placed, can be positioned on the first side portion 1232a and the second side portion 1232b, respectively.

[0172] Furthermore, the first-to-second housing 1232 may include a housing hole located in either the upper or lower part. In one embodiment, the housing 1232 may include an upper surface and a lower surface located between the first side portion 1232a and the second side portion 1232b.

[0173] Furthermore, housing holes can be located on the top and bottom surfaces. For example, the housing holes may include a first hole 1232h1 and a second hole 1232h2. The first hole 1232h1 may be located on the top surface of the housing 1232. The second hole 1232h2 may be located on the bottom surface of the housing 1232. Thus, the top surface of the housing 1232 may include the first hole 1232h1. The bottom surface of the housing 1232 may include the second hole 1232h2.

[0174] Furthermore, the first and second lens assemblies, described later, can be easily joined through the housing hole, and inspections (e.g., vision tests) of the first and second lens assemblies can be performed.

[0175] Furthermore, the first guide grooves GG1a and GG1b located on the first side portion 1232a can be extended in a third direction. In addition, as mentioned above, the first guide grooves GG1a and GG1b can have different shapes from each other. For example, one of the first guide grooves GG1a may be an inclined groove, while the other GG1b may have a flat structure. This can also be applied to the second guide grooves GG2a and GG2b. The first and second balls are placed on the inclined groove and the flat structure, allowing the first lens assembly or the second lens assembly to move along the optical axis.

[0176] Referring to Figures 8 and 9, the following explanation will use one coil as a reference for the electromagnetic force. In the camera device according to the embodiment, an electromagnetic force DEM1 is generated between the first magnet 1252a and the first coil 1251a, allowing the first lens assembly 1222a to move horizontally to the optical axis, i.e., in the third direction (Z-axis direction) or in the opposite direction 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 region facing the edges of the first and second subcoils. As a result, the electromagnetic force is formed based on the current flow in the adjacent regions of the first and second subcoils.

[0177] As described above, in the camera device according to the embodiment, the first magnet 1252a can be provided on the first lens assembly 1222a by, 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 the south pole. The outer surface of the first magnet 1252a may be the surface facing the first coil 1251a. The surface opposite to the first surface may be the north pole. This allows only one of the north and south poles to be positioned facing the first coil 1251a. Here, we will explain based on the case where the outer surface of the first magnet 1252a is the south pole. Furthermore, the first coil 1251a consists of a plurality of subcoils, and current can flow in opposite directions in the plurality of subcoils. That is, in the region of the first subcoil SC1a adjacent to the second subcoil SC2a, the current can flow identically to "DE1".

[0178] 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 perpendicular to the optical axis direction (second direction) and is a region positioned perpendicular to the optical axis direction (e.g., positioned along the first direction). The second region of the second subcoil SC2a overlaps with the first drive magnet 1252a in a direction perpendicular to the optical axis direction (second direction) and is a region positioned perpendicular to the optical axis direction (e.g., positioned along the first direction).

[0179] Furthermore, as shown in the figure, in the embodiment, when a magnetic force is applied in the second direction (Y-axis direction) at the S pole of the first magnet 1252a, and a current DE1 flows in the first direction (X-axis direction) through the first coil 1251a, an electromagnetic force DEM1 may act in the third direction (Z-axis direction) due to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0180] At this time, since the first coil 1251a is fixed to the side of the housing, the first lens assembly 1222a, on which the first magnet 1252a is located, can move in the opposite direction to the Z-axis direction due to the electromagnetic force DEM1 according to the direction of the current. In other words, the optical drive magnet can move in the opposite direction to the electromagnetic force applied to the optical drive coil. Furthermore, the direction of the electromagnetic force can be changed by the current in the coil and the magnetic force of the magnet.

[0181] This allows the first lens assembly 1222a to move along a rail located on the inner surface of the housing through the first ball in a direction parallel to the third direction or 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.

[0182] The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 on which a first ball or a second ball is placed. The first lens assembly 1222a or the second lens assembly 1222b may also include a second recess RS2 on which a first ball or a second ball is placed. There may be multiple first recesses RS1 and second recesses RS2. 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 the optical axis direction within each recess can be adjusted. In other words, the first recess RS1 or the second recess RS2 can act as stoppers for the first and second balls.

[0183] Furthermore, in the camera device according to the embodiment, the second magnet 1252b may be provided on the second lens assembly 1222b by, for example, a unipolar magnetization method.

[0184] Furthermore, the first coil 1251a consists of multiple subcoils, and current can flow in opposite directions in each of the multiple subcoils. That is, in the region of the first subcoil SC1a adjacent to the second subcoil SC2a, the current can flow identically to "DE1".

[0185] Furthermore, in the embodiment, either the north pole or south pole of the second magnet 1252b can be positioned so that it faces the second coil 1251b. In the embodiment, the surface facing the outer surface of the second magnet 1252b (the first surface) can be the south pole. Alternatively, the first surface can be the north pole. In the following explanation, we will use the case where the first surface is the north pole, as shown in the figure, as the basis.

[0186] Furthermore, the second coil 1251b consists of multiple subcoils, and current can flow in opposite directions in these subcoils. That is, in the region adjacent to the second subcoil SC2b in the first subcoil SC1b, current can flow identically to "DE2".

[0187] In this embodiment, when a magnetic force DM2 is applied in the second direction (Y-axis direction) on the first surface (N pole) of the second magnet 1252b, and a current DE2 flows in the first direction (X-axis direction) in the second coil 1251b corresponding to the N pole, an electromagnetic force DEM2 may act in the third direction (Z-axis direction) due to the interaction of electromagnetic forces (for example, Fleming's left-hand rule).

[0188] At this time, since the second coil 1251b is fixed to the side of the housing, the second lens assembly 1222b, on which the second magnet 1252b is located, can move in the opposite direction to the Z-axis direction by the electromagnetic force DEM2 according to the direction of the current. For example, as mentioned above, the direction of the electromagnetic force can be changed by the current in the coil and the magnetic force of the magnet. As a result, the second lens assembly 1222b can move along a 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.

[0189] Referring to Figure 10, in the camera device according to the embodiment, the drive unit can provide driving forces F3A, F3B, F4A, and F4B to 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, such a drive unit may include an optical drive coil 1251 and an optical drive magnet 1252. The electromagnetic force formed between the optical drive coil 1251 and the optical drive magnet 1252 allows the lens unit 1220 to move along the third direction (Z-axis direction).

[0190] At this time, the first coil 1251a and the second coil 1251b may be placed in holes formed in the sides of the housing 1230 (for example, the first side and the second side). The second coil 1251b may be electrically connected to the first substrate 1271. The first coil 1251a may be electrically connected to the second substrate 1272. As a result, the first coil 1251a and the second coil 1251b can receive drive signals (for example, current) from the drive drivers on the circuit board of the circuit board 1300 through the substrate portion 1270.

[0191] At this time, the electromagnetic forces F3A and F3B between the first coil 1251a and the first magnet 1252a allow the first lens assembly 1222a on which the first magnet 1252a is mounted to move along the third direction (Z-axis direction). In addition, the second lens group 1221b mounted on the first lens assembly 1222a can also move along the third direction.

[0192] Furthermore, the electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b allow the second lens assembly 1222b, on which the second magnet 1252b is mounted, to move along the third direction (Z-axis direction). In addition, the third lens group 1221c mounted on the second lens assembly 1222b can also move along the third direction.

[0193] 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. In one 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.

[0194] Furthermore, the second camera actuator can be fixed zoom or continuous zoom depending on the movement method of the second lens group (or third lens group).

[0195] Furthermore, the first Hall sensor 1253a and the second Hall sensor 1253b may be arranged in at least one of the first subcoil and the second subcoil. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the second direction. Or the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the second direction. Or the first Hall sensor 1253a and the second Hall sensor 1253b may partially overlap in the second direction.

[0196] By driving the first lens assembly, the first lens assembly 1222a can be positioned so as close as possible 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-first stopper ST1a may decrease. The distance between the first-second stopper ST1b and the lens projection of the first lens assembly may also decrease.

[0197] That is, when the first lens assembly 1222a moves to its maximum extent toward the first camera actuator, the first lens assembly 1222a 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 with the movement of the first lens assembly simultaneously or sequentially. In this embodiment, the 1-1 stopper and the 1-2 stopper may collide with the movement of the first lens assembly simultaneously.

[0198] This minimizes collisions with the maximum mecha position of the first lens assembly 1222a (or second lens assembly), even when a lens made of glass (e.g., at the foremost end) is placed within the first lens assembly 1222a (or second lens assembly). In other words, lens breakage can be suppressed. For example, at least one of the first and second lens assemblies can include a lens containing glass, and the glass can be located at the outermost position within the first or second lens assembly.

[0199] As a variation, during sequential collisions, the larger guiding section may absorb the impact first, minimizing damage to the first lens assembly.

[0200] Similarly, the second-second stopper ST2b may collide with the second lens assembly 1222b. That is, when the second lens assembly 1222b moves to its maximum extent in the direction of the image sensor or optical axis, the second lens assembly 1222b may collide with the second-second stopper ST2b and the second-first stopper ST2a. This minimizes the collision with the maximum movement position (mecha position) of the first lens assembly 1222a, even if a lens made of glass is placed inside the second lens assembly 1222b. In other words, the phenomenon of lens breakage can be suppressed. The same applies to the modified example.

[0201] In other words, when the first lens assembly 1222a moves, the 1-1 stopper ST1a and the 1-2 stopper ST1b can come into contact with the first lens assembly 1222a. When the first lens assembly 1222a moves to its maximum extent in a mecha-to-mecha manner, the first lens assembly 1222a can come into contact with the first stoppers ST1a and ST1b. For example, the first lens assembly 1222a can move to one end in the direction of the optical axis or to the other end in the opposite direction of the optical axis. At this time, the first lens assembly 1222a can move to a point where it comes into contact with the first stopper or the second stopper. For example, when the first lens assembly 1222a moves, the camera module can be in a telephoto or wide-angle state. The wide-angle state is achieved when the first lens assembly 1222a is in contact with or as close as possible to the first stopper (tolerance exists), and the telephoto state may be achieved when the first lens assembly 1222a is in contact with or as close as possible to the second stopper (tolerance exists).

[0202] Furthermore, when the second lens assembly 1222b moves in the optical axis direction, the first to third stoppers ST1c can come into contact with the second lens assembly 1222b.

[0203] Such a first stopper can reduce the impact on the movement of the first lens assembly 1222a and the second lens assembly 1222b. As mentioned above, this can improve the reliability of the first lens assembly 1222a and the second lens assembly 1222b, as well as the reliability of the internal second and third lens groups. Furthermore, the range of movement of the first lens assembly 1222a and the second lens assembly 1222b is limited, allowing for precise driving of magnification and other parameters.

[0204] Figure 11 is a perspective view of a part of the configuration of the second camera actuator according to the embodiment.

[0205] Referring to Figure 11, the first lens assembly 1222a and the second lens assembly 1222b can be spaced apart in the optical axis direction (Z axis direction).

[0206] The second guide groove may be positioned opposite the first guide groove. In one embodiment, the first and second guide grooves may overlap at least partially in the second direction (Y-axis direction). This configuration improves the spatial efficiency of the drive unit for moving the first and second lens assemblies within the second camera actuator, making it easier to miniaturize the second camera actuator.

[0207] As described above, the first guide groove may contain a first ball and a first coil, etc., arranged adjacent to each other, and the second guide groove may contain a second ball and a second coil, etc., arranged adjacent to each other, as described above.

[0208] Furthermore, according to the embodiment, the first and second lens assemblies 1222a and 1222b can each include yokes YK1 and YK2 positioned on their sides.

[0209] The first yoke YK1 can be positioned on the side of the first lens assembly 1222a. The second yoke YK2 can be positioned on the side of the second lens assembly 1222b. Such first yoke YK1 and second yoke YK2 can be extended outward by at least a portion of each. This allows the first yoke YK1 to surround at least a portion of the side of the first magnet 1252a. As shown, the first yoke YK1 can consist of various structures surrounding the inner surface and a portion of the side of the first magnet 1252a. For example, the first yoke YK1 can consist of divided members, each divided member can be positioned on the inner surface and a portion of the side of the first magnet 1252a. This can improve the coupling force between the unipolar magnetized optical drive magnet and the yoke. Similarly, the second yoke YK2 can surround at least a portion of the side of the second magnet 1252b. As shown, the second yoke YK2 can consist of various structures surrounding the inner surface and a portion of the side of the second magnet 1252b. For example, the second yoke YK2 consists of divided members, each of which can be positioned on the inner surface and side surface of the second magnet 1252b.

[0210] Furthermore, the yoke can be positioned to couple not only with the optical drive magnet, but also with the optical drive coil.

[0211] Furthermore, multiple balls can be positioned on the outer surface of the lens assembly. As mentioned above, the first ball can be positioned on the outer surface of the first lens assembly 1222a. The second ball can be positioned on the outer surface of the second lens assembly 1222b.

[0212] The first and second balls can consist of multiple units. For example, multiple first balls can be arranged in a single recess of the first lens assembly 1222a along the optical axis direction (Z axis direction). Similarly, multiple second balls can be arranged in a single recess of the second lens assembly 1222b along the optical axis direction (Z axis direction).

[0213] For example, the second ball B2 may include the first subball B2a, the second subball B2b, and the third subball B2c. The first subball B2a, the second subball B2b, and the third subball B2c may be arranged side by side along the optical axis. This allows the first subball B2a, the second subball B2b, and the third subball B2c to overlap each other at least partially along the optical axis.

[0214] The first sub-ball B2a and the second sub-ball B2b can be located on the edges of the multiple balls. The third sub-ball B2c can be located between the first sub-ball B2a and the second sub-ball B2b.

[0215] Multiple 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.

[0216] As an example, the diameters R1 and R3 of the balls located at the edge (first and second sub-balls) may be smaller than the diameter R2 of the ball located on the inside of the group (third sub-ball). For example, the diameters R1 and R3 of the first sub-ball B2a and the second sub-ball B2b may be smaller than the diameter R2 of the third sub-ball B2c. With such a configuration, the movement of the lens assembly by the multiple balls can be performed accurately without tilting to one side.

[0217] Such explanations for multiple balls can also be applied to the first ball.

[0218] Furthermore, as mentioned above, the optical drive magnet can consist of multiple magnets, including a first magnet and a second magnet. The first and second magnets can face each other with the same poles positioned on the outside. That is, the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet can have a first pole. The second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet can have a second pole.

[0219] Figure 12 is a diagram illustrating the optical drive coil, optical drive magnet, and yoke according to the embodiment, Figure 13 is a diagram illustrating the movement of the optical drive magnet by the drive unit according to the embodiment, and Figure 13 is a diagram illustrating the movement of the second and third lens assemblies according to the embodiment.

[0220] Referring to Figures 12 and 13, the length W5 of the first subcoil SC1a in the optical axis direction (Z axis direction) may be the same as the length W6 of the second subcoil SC2a in the optical axis direction (Z axis direction). With this configuration, driving force control by the first subcoil SC1a and the second subcoil SC2a can be easily performed.

[0221] Furthermore, the overall length W1 (or maximum length) of the optical drive coil in the optical axis direction (Z axis direction) may be greater than the length W2 (maximum length) of the optical drive magnet 1252a in the optical axis direction (Z axis direction). With this configuration, the stroke by the optical drive magnet can be maximized. Moreover, a long stroke can be achieved with a unipolar magnetized optical drive magnet.

[0222] In addition, as an embodiment, the maximum travel 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.

[0223] Furthermore, the maximum travel 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 subcoil 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 subcoil SC2a.

[0224] Furthermore, as an example, the maximum travel distance of the second lens assembly in the optical axis direction may be greater than the length of the hole (or hollow portion) of the third subcoil SC1b in the short axis direction (first direction), and equal to or less than the length of the hole (or hollow portion) of the third subcoil SC1b in the long axis direction (optical axis direction or third direction).

[0225] Furthermore, the maximum travel distance of the first lens assembly may be greater than the length of the hole (or hollow portion) of the fourth subcoil SC2b in the short axis direction (first direction), and equal to or less than the length of the hole (or hollow portion) of the fourth subcoil SC2b in the long axis direction (optical axis direction or third direction).

[0226] Furthermore, the length W3 in the optical axis direction of the internal hole of the first subcoil SC1a and the length W4 in the optical axis direction of the internal hole of the second subcoil SC2a may be the same.

[0227] Furthermore, the length W2 of the drive magnet 1252a in the optical axis direction (Z axis direction) may be greater than the length W3 in the optical axis direction of the internal hole of the first subcoil SC1a. Also, the length W2 of the drive magnet 1252a in the optical axis direction (Z axis direction) may be greater than the length W4 in the optical axis direction of the internal hole of the second subcoil SC2a. This allows the optical drive magnet to move along the optical axis within its total length in the optical axis direction of the optical drive coil.

[0228] 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 in the optical axis direction of any one of the hollow portions (or holes) of each subcoil (first subcoil to fourth subcoil).

[0229] The length W2 (maximum length) of the optical drive magnet in the optical axis direction (Z axis direction) may be smaller than the length W5 of the first subcoil SC1a in the optical axis direction (Z axis direction).

[0230] This configuration eliminates the generation of back electromotive force during movement of the lens assembly along the optical axis, thus enabling a long stroke.

[0231] The length (maximum length, W2) of the optical drive magnet (or 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 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. Even more preferably, the length (maximum length, W2) of the optical drive magnet (or 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.

[0232] The maximum travel distance MD of the first lens assembly in the optical axis direction may be less than the length (maximum length, W2) of the optical drive magnet (or first and second drive magnets) in the optical axis direction (Z axis direction). For example, the maximum travel distance MD of the first lens assembly in the optical axis direction may be 0.66 times or more and 0.92 times or less of the length (maximum length, W2) of the optical drive magnet (or first and second drive magnets) in the optical axis direction (Z axis direction). This makes it possible to suppress the generation of back electromotive force to the greatest extent possible.

[0233] Furthermore, as an example, the overall length W1 (or maximum length) of the optical drive coil in the optical axis direction (Z axis direction) may be 18 mm to 20 mm. In addition, the length W2 of the optical drive magnet in the optical axis direction (Z axis direction) may be 8 mm to 12 mm. The length W3 of the hole (or hollow part) of the first subcoil SC1a in the long axis direction (optical axis direction or third direction) may be 5.6 mm to 8.7 mm. The length W4 of the hole (or hollow part) of the second subcoil SC2a in the long axis direction (optical axis direction or third direction) may be 5.6 mm to 8.7 mm.

[0234] The length W5 of the first subcoil SC1a in the optical axis direction (Z axis direction) can be 8 mm to 10 mm. However, as mentioned above, the length W5 of the first subcoil SC1a in the optical axis direction (Z axis direction) can be greater than or the same as the length W2 of the optical drive magnet in the optical axis direction (Z axis direction).

[0235] Furthermore, the length W6 of the second subcoil SC2a in the optical axis direction (Z axis direction) can be 8 mm to 10 mm. However, as mentioned above, the length W5 of the second subcoil SC2a in the optical axis direction (Z axis direction) can be greater than or the same as the length W2 of the optical drive magnet in the optical axis direction (Z axis direction).

[0236] Furthermore, in the embodiment, due to the unipolar magnetization of the optical drive magnet, current can flow in the first subcoil SC1a and the second subcoil SC2a in different directions. For example, current can flow in either the clockwise or counterclockwise direction in the first subcoil SC1a, and current can flow in the other of the clockwise or counterclockwise directions in the second subcoil SC2a.

[0237] Furthermore, the length W2 of the optical drive magnet in the optical axis direction (Z axis direction) may be greater than the travel distance of the lens assembly in the optical axis direction. That is, the length W2 of the optical drive magnet in the optical axis direction (Z axis direction) may be greater than the maximum travel distance of the first lens assembly or the maximum travel distance of the second lens assembly. With such a configuration, a driving force for movement in the optical axis direction can be safely provided.

[0238] Furthermore, as mentioned above, there may be multiple lens assemblies, and the lens assembly positioned at the rear end may have a greater displacement in the optical axis direction than the lens assembly positioned at the front end.

[0239] For example, the displacement distance of the first lens assembly 1222a in the optical axis direction (Z-axis direction) may be less than the displacement distance of the second lens assembly 1222b in the optical axis direction (Z-axis direction). In other words, the displacement distance of the second lens assembly 1222b in the optical axis direction may be greater than the displacement distance of the first lens assembly in the optical axis direction. The first lens assembly 1222a can be positioned at the front end of the second lens assembly 1222b.

[0240] Furthermore, in the camera actuator according to the embodiment, the optical drive magnet 1252a can move from the "center" to "maximum movement 1" or "maximum movement 2". Here, in the "center" position, the optical drive magnet 1252a may overlap with the first subcoil SC1a and the second subcoil SC2a in the second direction. In other words, the first subcoil SC1a and the second subcoil SC2a can face the optical drive magnet completely.

[0241] Furthermore, since the coil extends in the first direction to provide the actual electromagnetic driving force, the region where the first subcoil SC1a and the optical drive magnet 1252a overlap may be the same as the region where the second subcoil SC2a and the optical drive magnet 1252a overlap. This minimizes the generation of back electromotive force, thereby enabling a long stroke.

[0242] Furthermore, in the case of "maximum movement 1," this can correspond to the case where the optical drive magnet 1252a moves to its maximum extent in the opposite direction in the third direction (Z-axis direction). In this case, the area in which the optical drive magnet 1252a overlaps with the first subcoil SC1a may be even larger than that of the second subcoil SC2a. Moreover, the optical drive magnet 1252a may overlap at least partially with the internal hole of the first subcoil SC1a. More specifically, the optical drive magnet 1252a may be separated from the edge of the internal hole of the first subcoil SC1a by a predetermined separation distance GP2 in the optical axis direction. With such a configuration, the back electromotive force generated at the end of the first subcoil SC1a can be reduced. For example, the optical drive magnet 1252a may move with its maximum stroke to an area in the opposite direction in the optical axis direction of the first subcoil SC1a that does not overlap with the end in the second direction (Y-axis direction).

[0243] In the case of "maximum movement 2," this can correspond to the case where the optical drive magnet 1252a moves to its maximum extent in the third direction (Z-axis direction). In this case, the area in which the optical drive magnet 1252a overlaps with the second subcoil SC2a may be even larger than the area in which the first subcoil SC1a overlaps with the second subcoil SC2a. Furthermore, the optical drive magnet 1252a may overlap at least partially with the internal hole of the second subcoil SC2a. More specifically, the optical drive magnet 1252a may be separated from the edge of the internal hole of the second subcoil SC2a by a predetermined separation distance GP1 in the optical axis direction. With such a configuration, the back electromotive force generated at the end of the second subcoil SC2a can be reduced. For example, the optical drive magnet 1252a may move with its maximum stroke to a region in the optical axis direction of the second subcoil SC2a that does not overlap with the end in the second direction (Y-axis direction).

[0244] This allows for the efficient implementation of a long stroke for the camera actuator, even if the optical drive magnet 1252a has a short length in the optical axis direction, through unipolar magnetization and the current direction of multiple optical drive coils.

[0245] Furthermore, the maximum travel distance of the optical drive magnet 1252a may correspond to the length in the optical axis direction of the first and second recesses that house the first or second ball in the aforementioned first lens assembly. Alternatively, the maximum travel distance of the optical drive magnet 1252a may correspond to the distance the optical drive magnet 1252a moves from maximum movement 1 to maximum movement 2 in the optical axis direction (Z axis direction). Or, the maximum travel distance of the optical drive magnet 1252a may correspond to the distance between stoppers that restrict the movement of the first or second ball in the optical axis direction. Alternatively, the maximum travel distance of the optical drive magnet 1252a may be the maximum distance the bobbin can move, and may correspond to the separation distance in the optical axis direction between a stopper located in the optical axis direction relative to the bobbin and a stopper located in the opposite direction in the optical axis direction.

[0246] Furthermore, the maximum travel distance of the optical drive magnet 1252a can correspond to twice the distance moved from the center to maximum travel 1. The travel distance of the optical drive magnet 1252a according to the embodiment can range from -6 mm to +6 mm relative to the center. Here, the travel distance in the optical axis direction from the center is referred to as "+", and the opposite direction in the optical axis direction is referred to as "-". As a result, the optical drive magnet 1252a (or at least one of the first and second lens assemblies) according to the embodiment can move in the optical axis direction within a range of 0 mm to 12 mm. In addition, the aforementioned maximum travel distance can correspond to the maximum stroke of the lens assembly in the camera module.

[0247] Figure 14 is a perspective view of the first lens assembly, first joining member, second joining member, and second lens assembly according to an embodiment.

[0248] Referring to Figure 14, the first lens assembly 1222a and the second lens assembly 1222b can be spaced apart in the optical axis direction (Z axis direction). The first lens assembly 1222a and the second lens assembly 1222b can then be moved along the optical axis direction (Z axis direction) by a drive unit. For example, the movement of the first lens assembly 1222a and the second lens assembly 1222b can perform autofocus or zoom functions.

[0249] Furthermore, the first lens assembly 1222a may include a first lens holder LAH1 that holds and connects the second lens group 1221b. The first lens holder LAH1 may be connected to the second lens group 1221b. The first lens holder LAH1 may also include a first lens hole LH1 for housing the second lens group 1221b. That is, the first lens hole LH1 may contain the second lens group 1221b, which includes at least one lens. The first lens holder LAH1 is identical to the housing section (e.g., first housing section, second housing section) described later, and can be used interchangeably.

[0250] Furthermore, the second lens assembly 1222b may include a second lens holder LAH2 that holds and connects the third lens group 1221c. The second lens holder LAH2 may also include a second lens hole LH2 for housing the third lens group 1221c. That is, at least one lens may be placed in the second lens hole LH2.

[0251] 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 includes a first outer surface MM1, and the second lens assembly 1222b includes a second outer surface MM2. The first outer surface MM1 may be the bottom surface of the first lens holder LAH1 with respect to the optical axis direction (Z axis direction). The third outer surface MM3, described later, 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.

[0252] Furthermore, the first outer surface MM1 and the second outer surface MM2 may overlap at least partially in the optical axis direction (Z axis direction). In an example, the first outer surface MM1 to the fourth outer surface MM4 may overlap at least partially with each other in the optical axis direction (Z axis direction).

[0253] For example, the joining member (not shown) can be in contact with at least one of the first outer surface MM1 and the second outer surface MM2.

[0254] Figure 15 is an exploded perspective view of the first lens assembly according to the embodiment, Figure 16 is a perspective view of the first lens assembly according to the embodiment, Figure 17 is another perspective view of the first lens assembly according to the embodiment, Figure 18 is a diagram illustrating the structure of the first lens holder and guiding part in the first lens assembly according to the embodiment, and Figure 19 is a view of Figure 16 cut at line II'.

[0255] Referring to Figures 15 to 19, in the second camera actuator according to the embodiment, the first bobbin 1222a may consist of a combination of numerous components. In the embodiment, the first bobbin 1222a may include a first lens holder LAH1, a guiding section GP, ​​and a bonding member BM.

[0256] The first lens holder LAH1 may include a first lens hole for housing a lens. This allows the second lens group to be positioned in the first lens hole of the first lens holder LAH1, as described above. This allows the first lens holder LAH1 to be coupled with the second lens group.

[0257] The guiding section GP may be positioned at a distance from one side of the first lens holder LAH1. The guiding section GP may be positioned horizontally away from the first lens holder LAH1. For example, the guiding section GP may be positioned such that at least a portion of it has a space or region horizontally separated from the first lens holder LAH1. In the first bobbin 1222a, the guiding section GP may be called the "first guiding section". Furthermore, the second bobbin 1222b may be identical in description and structure to the first bobbin 1222a. Or the second bobbin 1222b may differ in description and structure to the first bobbin 1222a. For example, the second bobbin 1222b may also include the first bobbin 1222a, the second lens holder LAH2, and the guiding section GP. In the second bobbin 1222b, the guiding section GP may be called the "second guiding section". Furthermore, the second lens holder LAH2 and the second guiding section GP may be integrally formed on the second bobbin 1222b. That is, the second guiding section may extend from the second lens holder in a first direction and be directly connected to the second lens holder. Also, the second guiding section may be in direct contact with the second lens holder. In addition, a bonding member may be used to connect the guiding section and the lens holder on at least one of the first and second bobbins.

[0258] The bonding member BM can be positioned between the first lens holder LAH1 and the guiding part GP. The bonding member BM may contain a resin or the like. For example, the bonding member BM may contain epoxy. Furthermore, the bonding member BM may harden when exposed to light (e.g., ultraviolet light). In this way, the bonding member BM can bond the first lens holder LAH1 and the guiding part GP to each other.

[0259] Such a bonding member BM allows tilting of the first lens holder LAH1 with respect to the optical axis direction during assembly. In other words, optical axis alignment can be achieved with respect to the first lens assembly. This can improve the optical performance of the second camera actuator according to the embodiment. Furthermore, in optical axis alignment, the movement, position alignment, or tilting of the guiding section GP with respect to the first lens holder LAH1 can be performed in various directions. For example, with respect to the first lens holder LAH1, the guiding section can be moved, positioned, or tilted in at least one of the first, second, and third directions. In other words, optical axis alignment in all directions (active align) can be achieved. As described above, the coupling structure of the first lens holder LAH1, guiding section GP, ​​and bonding member BM, with the first bobbin or first lens assembly 1222a separated, can be provided. The coupling structure can also be applied to the second lens assembly. In other words, the central axis of each lens holder (first and second lens holders) can be adjusted relative to the guiding section (first and second guiding sections). That is, the optical axis of the lens holder can be adjusted or controlled relative to the guiding section.

[0260] However, the first lens assembly may have a greater travel distance along the optical axis relative to the second lens assembly. This may provide a more effective improvement in optical performance through optical axis alignment with respect to the first lens assembly.

[0261] Specifically, the first lens holder LAH1 may include an outer surface HOS that contacts the bonding member BM. The outer surface HOS of the first lens holder LAH1 can be positioned to face the inner surface GIS of the guiding portion GP.

[0262] The outer surface HOS of the holder may include a first groove HOSh and a first projection HOSp. The outer surface HOS of the holder may be the surface facing the guiding section GP and may include an internally positioned first groove HOSh. The outer surface HOS of the holder may correspond to or be called the "first surface". The internal surface GIS of the guiding section GP may correspond to or be called the "second surface".

[0263] The outer surface HOS of the holder and the inner surface GIS of the guiding section GP may be positioned to be inclined perpendicularly to the upper or lower surface of the first lens holder LAH1. For example, the upper or lower surface of the first lens holder LAH1 may be located between opposing outer surfaces HOS of the holder. Furthermore, the upper or lower surface of the first lens holder LAH1 may be a surface that contacts a gripper or the like, and the first lens holder LAH1 may be inserted into the main barrel through a housing hole (first hole or second hole) of the main barrel by the gripper.

[0264] Furthermore, the surfaces of the first lens holder LAH1 and the guiding portion GP facing each other may be inclined. For example, the outer surface HOS of the first lens holder LAH1 and the inner surface GIS of the guiding portion GP may be positioned to be inclined relative to each other. The first projection HOSp may be located inside the first groove HOSh. For example, the first projection Hosp may be formed within the first groove HOSh.

[0265] The bonding member BM can be positioned in the first groove HOSh and the first projection HOSp. That is, the bonding member BM can be in contact with the outer surface HOS of the holder. Also, the bonding member BM can be positioned within the first groove HOSh and in contact with the first projection HOSp.

[0266] As an example, the bonding member BM may be positioned between the first projection and the second projection. Alternatively, the bonding member BM may be positioned between the first groove and the second groove.

[0267] This configuration can increase the bonding area between the bonding member BM and the outer surface HOS of the first holder. In other words, the bonding member BM can improve the bonding force between the first lens holder LAH1 and the guiding portion GP.

[0268] Furthermore, the guiding section GP may include an inner surface GIS that contacts the bonding member and an outer surface GOS that faces the inner surface GIS.

[0269] The inner surface GIS of the guiding section GP can be positioned adjacent to the optical axis than the outer surface GOS. Alternatively, the inner surface GIS of the guiding section GP can be positioned adjacent to the second lens group than the outer surface GOS. Alternatively, the inner surface GIS of the guiding section GP can be positioned inward relative to the optical axis than the outer surface GOS.

[0270] The guiding section GP may include a second groove GISh and a second projection GISp. The second groove GISh may be located on the inner surface GIS of the guiding section GP. The second projection GISp may be located on the inner surface GIS of the guiding section GP.

[0271] The second projection GISp can be located on the inner surface GIS of the guiding portion GP, ​​inside the second groove GISh. For example, the second projection GISp can be formed within the second groove GISh.

[0272] Furthermore, the bonding member BM can be positioned in the second groove GISh and the second projection GISp. In other words, the bonding member BM can be in contact with the inner surface GIS of the guiding portion GP. Also, the bonding member BM can be positioned within the second groove GISh. And the bonding member BM can be in contact with the second projection GISp.

[0273] This configuration can increase the bonding area between the bonding member BM and the inner surface GIS of the guiding portion GP. As a result, the bonding force between the first lens holder LAH1 and the guiding portion GP can be improved by the bonding member BM.

[0274] And the guiding portion GP can be partitioned into a first guiding region GA1 and a second guiding region GA2. Or the guiding portion GP can include the first guiding region GA1 and the second guiding region GA2. The first guiding region GA1 and the second guiding region GA2 can correspond to regions that are bisected with respect to the length in the optical axis direction of the guiding portion GP. The first guiding region GA1 can be adjacent to the first camera actuator as compared to the second guiding region GA2. And the second guiding region GA2 can be adjacent to the image sensor as compared to the first guiding region GA1.

[0275] As an example, the second groove GISh and the second protrusion GISp can be located in at least one of the first guiding region GA1 and the second guiding region GA2. For example, the second groove GISh and the second protrusion GISp can be located in the first guiding region GA1. With such a configuration, the moving distance in the optical axis direction of the first lens assembly can be increased. In other words, the moving distance of the first lens assembly for zoom can be increased. Thereby, the optical performance (e.g., magnification) can be improved.

[0276] Also, the outer surface GOS of the guiding portion GP can face one side portion of the housing. For example, the outer surface GOS of the guiding portion GP can face the first side portion of the housing. Or the outer surface GOS of the guiding portion GP can be positioned so as to be adjacent to the first side portion as compared to the second side portion of the housing.

[0277] Furthermore, a recess on which a ball is placed can be formed on the outer surface GOS or the third surface GOS of the guiding portion GP. For example, first and second recesses on which a ball is placed can be formed on the outer surface GOS or the third surface GOS of the guiding portion GP. The third surface can face the side portion of the housing.

[0278] Furthermore, the first groove HOSh and the second groove GISh can overlap in a direction perpendicular to the optical axis. Alternatively, the first groove HOSh and the second groove GISh can overlap in a direction from the first surface to the second surface. The opposite direction can also be applied equally. For example, the first groove HOSh and the second groove GISh can overlap in the horizontal direction or the second direction. With such a configuration, the bonding force of the bonding member BM to the first lens holder LAH1 and the guiding part GP can be formed identically in the region where they overlap in the horizontal direction. That is, the bonding member BM can bond the first lens holder LAH1 and the guiding part GP to each other, and the bonding force between the first lens holder LAH1 and the guiding part GP can also be formed in a well-balanced manner. This can improve the reliability of the first lens assembly.

[0279] As an additional example, the first groove HOSh may further have an additional groove formed on the inside. That is, the first groove HOSh may further include an additional groove. Such a configuration may further improve the coupling force between the first lens holder and the guiding part.

[0280] As a variation, the first groove HOSh and the second groove GISh may only partially overlap in a direction perpendicular to the optical axis. For example, the first groove HOSh and the second groove GISh may not overlap at least partially in a direction perpendicular to the optical axis. Such a configuration can improve the bonding area with the bonding member BM and further improve the bonding force between the first lens holder LAH1 and the guiding part GP. This can further improve the reliability of the first lens assembly.

[0281] Furthermore, the first projection HOSp and the second projection GISp can overlap in a direction perpendicular to the optical axis. The first projection HOSp and the second projection GISp can overlap in a direction from the first surface to the second surface. The same can be applied in the opposite direction. For example, the first projection HOSp and the second projection GISp can overlap in the horizontal direction or the second direction. With such a configuration, the bonding force of the bonding member BM to the first lens holder LAH1 and the guiding part GP can be formed identically in the region where they overlap in the horizontal direction. That is, the bonding member BM can bond the first lens holder LAH1 and the guiding part GP to each other, and the bonding force between the first lens holder LAH1 and the guiding part GP can also be formed in a well-balanced manner. This can improve the reliability of the first lens assembly.

[0282] As a variation, the first projection HOSp and the second projection GISp may only partially overlap in a direction perpendicular to the optical axis. For example, the first projection HOSp and the second projection GISp do not necessarily have to overlap in at least a portion of the direction perpendicular to the optical axis.

[0283] Alternatively, the first projection HOSp and the second projection GISp may be arranged alternately with respect to each other. For example, the first projection HOSp and the second projection GISp may be positioned alternately with respect to each other along the optical axis. For example, the first projection HOSp and the second projection GISp may partially overlap along the optical axis.

[0284] This configuration improves the bonding area with respect to the bonding member BM, potentially further enhancing the bonding strength between the first lens holder LAH1 and the guiding portion GP. This can further improve the reliability of the first lens assembly.

[0285] Figure 20 is a top view of the second camera actuator according to the embodiment, Figure 21 is a diagram illustrating the inside of the housing of the second camera actuator according to the embodiment, Figure 22 is a bottom view of the second camera actuator according to the embodiment, and Figure 23 is a diagram illustrating the inside of the housing of the second camera actuator according to the embodiment.

[0286] Referring to Figures 20 to 23, in the second camera actuator according to the embodiment, the housing 1232 can include a first hole 1232h1 and a second hole 1232h2.

[0287] Furthermore, at least one of the first hole 1232h1 and the second hole 1232h2 may overlap with the first lens holder LAH1 and bonding member BM in a direction perpendicular to the optical axis. In other words, at least one of the first hole 1232h1 and the second hole 1232h2 may overlap with the first lens holder LAH1 and bonding member BM in a first direction (X-axis direction) or perpendicular to it.

[0288] For example, the first lens holder LAH1 may be exposed by at least one of the first hole 1232h1 and the second hole 1232h2. Also, the bonding member BM may be exposed by at least one of the first hole 1232h1 and the second hole 1232h2. Alternatively, the lens holder and the bonding member may overlap or overlap in a first direction with respect to the first hole and the second hole.

[0289] In one example, the first hole 1232h1 and the second hole 1232h2 may overlap the first lens holder LAH1 and the bonding member BM in a first direction (X-axis direction) or perpendicular direction. In other words, the first lens holder LAH1 and the bonding member BM may be exposed by the first hole 1232h1 and the second hole 1232h2. In this case, at least a portion of the bonding member BM may be exposed by the first hole 1232h1 and the second hole 1232h2.

[0290] This configuration allows the first bobbin 1222a or the second bobbin 1222b to be easily inserted into the housing 1232 through at least one of the first hole 1232h1 and the second hole 1232h2. In other words, assembly or connection between the housing 1232 and the first bobbin 1222a (or the second bobbin 1222b) can be easily performed.

[0291] Furthermore, if active alignment is performed on the first bobbin 1222a, light irradiation of the bonding member BM can also be easily performed. That is, light irradiation of the bonding member BM can be more easily performed through the first hole 1232h1 and the second hole 1232h2.

[0292] As a result, the length of the first hole 1232h1 and the second hole 1232h2 in the horizontal direction or the second direction (Y-axis direction) may be greater than the length of the first lens holder LAH1 (or the first lens holder and the first bonding member) in the second direction (Y-axis direction).

[0293] Furthermore, the length of the first hole 1232h1 and the second hole 1232h2 in the optical axis direction or third direction (Z axis direction) may be greater than the length of the first lens holder LAH1 (or the first lens holder and the first bonding member) in the optical axis direction or third direction (Z axis direction).

[0294] This allows for optical axis alignment or active alignment of the first bobbin 1222a to be performed after optical axis alignment or active alignment of the fixed assembly has been performed. This can further improve the optical performance of the second camera actuator, as will be described later. For example, the optical axes of the third lens group in the second bobbin 1222b and the second lens group in the first bobbin 1222a can be aligned with each other.

[0295] As another example, the first bobbin 1222a and the second bobbin 1222b may each have at least one connecting member. This allows for optical axis alignment between the first bobbin 1222a (or the second lens group) and the second bobbin 1222b (or the third lens group).

[0296] As a modification, either the first bobbin 1222a or the second bobbin 1222b can have a joining member. Thereby, optical axis alignment can be performed for one of the first bobbin 1222a (or the second lens group) and the second bobbin 1222b (or the third lens group). For example, optical axis alignment can be performed only for the first bobbin 1222a (or the second lens group). Or optical axis alignment can be performed only for the second bobbin 1222b (or the third lens group).

[0297] Furthermore, in the AA with respect to the fixed assembly, the thickness of the bonding member (e.g., epoxy) used in the connection between the fixed assembly and the housing can also be different.

[0298] As described above, the first bobbin can be composed of a first lens holder and a guiding portion (the first guiding portion). The second bobbin can be composed of a second lens holder and a guiding portion (the second guiding portion).

[0299] Furthermore, the outer surface of the holder of the first lens holder (the first surface) can face the inner surface of the first guiding portion (the second surface). The first surface and the second surface can be in contact with each other by a bonding member.

[0300] As an example, the second surface can be positioned so as to be inclined with respect to the optical axis or the optical axis direction. Differently from this, the first surface can be parallel to the optical axis or the optical axis direction. With such a configuration, the optical performance can be further improved.

[0301] Also, the bonding member can be composed of at least one bonding member between the first surface and the second surface. As an example, the bonding member can be composed of a first bonding member and a second bonding member spaced apart in the optical axis direction between the first surface and the second surface. Also, the bonding member can have a third bonding member and a fourth bonding member positioned so as to be spaced apart in a direction perpendicular to the optical axis direction between the first surface and the second surface. And the third bonding member and the fourth bonding member can have different thicknesses from each other.

[0302] At this time, the positional adjustment between the first and second surfaces by the optical axis alignment described above allows the first bonding member and the second bonding member to have different thicknesses. Furthermore, although the bonding member is a single unit, the thickness may differ in each region. For example, the thickness of different regions of the bonding member may differ. In one embodiment, a portion of the guiding section GP (hereinafter referred to as the "first portion") may overlap with at least one of the first hole 1232h1 and the second hole 1232h2 in a direction perpendicular to the optical axis. For example, a portion of the guiding section GP (the first portion) may overlap with at least one of the first hole 1232h1 and the second hole 1232h2 in a direction perpendicular to or in a first direction (X-axis direction). With such a configuration, light irradiation of the bonding member BM can be performed on the entire bonding member BM. This can further improve the reliability between the guiding section GP and the first lens holder LAH1 by the bonding member BM.

[0303] Furthermore, the second portion of the first guiding section does not necessarily have to overlap the first and second holes in a direction perpendicular to the optical axis (first direction). That is, the second portion of the first guiding section may overlap with the housing in the direction from the first hole to the second hole. For example, the second portion may overlap with the housing in the first direction.

[0304] Figure 24 is a diagram illustrating the connection between the lens holder and the guiding section in the first lens assembly of the second camera actuator according to an embodiment, and Figure 25 is a graph illustrating the SFR in wide and telephoto modes after active alignment by movement of the fixed assembly and the first lens assembly.

[0305] Referring to Figure 24, as previously mentioned, the first bobbin 1222a, to which the bonding member BM is bonded (or coated) through at least one of the first hole 1232h1 and the second hole 1232h2, can be drawn into or entered into the housing 1232. The second bobbin or second lens assembly can then be swept along the optical axis, that is, through focus can be measured, and a peak can be detected in the spatial frequency response (SFR). Here, the peak in the spatial frequency response (SFR) can include peaks in the tangential (T) and sagittal (S) directions, where tangential (T) corresponds to vertical (V) and sagittal (S) corresponds to horizontal (H).

[0306] Furthermore, the value corresponding to the peak of the spatial frequency response (SFR) may correspond to the position of the first lens assembly in the Z-axis direction (optical axis direction). A value of 0 for the X-axis in the spatial frequency response (SFR) may correspond to the initial position of the first lens assembly. That is, in the SFR, the X-axis corresponds to the position of the first lens assembly in the Z-axis direction.

[0307] In this example, the spatial frequency response (SFR) graph is a graph of the region of interest (ROI) of the target. The region of interest (ROI) of the target can be at least one, but four (excluding the center) are described below as a basis. For example, the regions of interest can be located in the upper left (LT), upper right (RT), lower left (LB), and lower right (RB) regions relative to the center of the target. The spatial frequency response (SFR) can be obtained in the upper left (LT), upper right (RT), lower left (LB), and lower right (RB) regions, respectively.

[0308] Through the values ​​obtained at the center of each region of interest and target, the angle for correction can be derived. Subsequently, angle correction can be performed on the first lens assembly (or first bobbin) using the derived angle. That is, tilt or decentering correction can be performed on the first bobbin. By performing such correction or optical axis alignment, the optical performance can be improved as shown in Figure 25.

[0309] Referring to Figure 25, CASE 1 shows the SFR performed before AA (Active Align) correction, CASE 2 shows the SFR after AA has been performed on a fixed assembly (movement (sweep) of the first or second bobbin), and CASE 3 shows the SFR after additional AA has been performed on the first bobbin in CASE 2. In Figure 25, the y-axis represents the SFR value, and the x-axis corresponds to the distance of focus shift (e.g., in mm).

[0310] Furthermore, in each case, the tolerances between multiple lenses in the fixed assembly, the first lens assembly, and the second lens assembly are ±0.1 degrees for tilt angle and ±5 μm for decentering. The inter-group tilt angle (between the fixed assembly, the first lens assembly, and the second lens assembly) is ±0.2 degrees, and the decentering is ±20 μm.

[0311] In relation to each case, the corresponding SFR (CASE 1) before AA correction refers to the SFR in the wide and tele state before correcting the fixed assembly and the first bobbin at a predetermined angle.

[0312] Then, the SFR (CASE 2) corresponding to the AA correction for the fixed assembly refers to the SFR in each state (wide, tele) after tilting or correcting the fixed assembly at a predetermined correction angle.

[0313] In this embodiment, "wide" may correspond to the state in which the first lens assembly (first bobbin) is moved to its maximum extent along the optical axis towards the second lens assembly or image sensor. Alternatively, "wide" may mean the position of the first lens assembly in the near focal length state or minimum magnification state. "Tele" may correspond to the state in which the first lens assembly is moved to its maximum extent along the optical axis towards the fixed assembly or first camera actuator. Alternatively, "tele" may mean the position of the first lens assembly in the far focal length state or maximum magnification state.

[0314] Furthermore, the SFR (CASE 3) corresponding to the additional AA correction refers to the SFR in each state (wide, tele) after the first bobbin has been corrected to a predetermined angle, when the second lens assembly (second bobbin) has been moved (sweeped) after the AA of the fixed assembly.

[0315] In the SFR graph in Figure 25, the Y-axis represents the SFR value ratio. For example, 1 represents 100%. The X-axis represents the Z value or length in the direction of the optical axis. Furthermore, each line of a different hue (dotted or solid) represents the SFR in the tangential (T) (or vertical) and sagittal (S) (or horizontal) directions at the center of the RT, RB, LT, LB, and ROI.

[0316] Thus, CASE 3 can reduce the maximum error relative to the peak SFR in at least one of the telephoto and wide-angle modes compared to CASE 1 and 2.

[0317] For example, after fixed assembly based on the movement (sweep) of the second bobbin and angle correction of the first bobbin, as in CASE 3, the maximum error to the peak of the spatial frequency response can be reduced in both tele and wide directions. That is, the error in the Z value between peaks of the SFR can be reduced in the tangential (T) (or vertical) and sagittal (S) (or horizontal) directions at the center of RT, RB, LT, LB, and ROI.

[0318] Thus, comparing CASE 3 with CASE 1 and CASE 2, the error in the Z-value between the peaks of the SFR before correction (before AA correction) for the fixed assembly and the first bobbin is large, while the error in the Z-value between the peaks of the SFR after correction (after AA correction) for the fixed assembly may decrease. Furthermore, while the error in the Z-value between the peaks of the SFR before correction (before AA correction) for the fixed assembly and the first bobbin is large, the error in the Z-value between the peaks of the SFR after correction for the fixed assembly and the first bobbin may decrease. Also, while the error in the Z-value between the peaks of the SFR after correction for the fixed assembly is large, the error in the Z-value between the peaks of the SFR after correction for the fixed assembly and the first bobbin may decrease.

[0319] In other words, adding AA of the first bobbin to the AA of the fixed assembly can improve optical performance.

[0320] Such angle correction (AA correction) of the fixed assembly and the first bobbin can improve the performance degradation of resolution due to sensitivity at high magnification. With module AA (optical axis alignment between the first and second camera actuators), it is difficult to improve the resolution of the module and only improvement of field-specific balance is possible, but as in the embodiment, angle correction of the fixed assembly and the first bobbin can improve lens performance and yield (see Table 1). In other words, AA correction can improve lens yield in each state (wide, tele). The values ​​in Table 1 are Monte Carlo simulation results.

[0321] [Table 1]

[0322] Figure 26 is a top view of a second camera actuator according to another embodiment, and Figure 27 is a top view of a second camera actuator according to yet another embodiment. Referring to Figure 26, the second camera actuator according to the other embodiment may include a moving assembly, housing, drive unit, base unit, substrate unit, and stopper. Furthermore, the second camera actuator may further include a shield can (not shown), elastic part (not shown), and connecting member (not shown). Also, the description of the first lens assembly (or first bobbin) described above for the second camera actuator may apply in the same way, except as follows.

[0323] The first lens holder LAH1 of the first bobbin 1222a can be tilted at a predetermined angle in a first or second direction with respect to the optical axis. For example, the first lens holder LAH1 of the first bobbin 1222a may be tilted at a first angle (θa) in the second direction with respect to the optical axis. As a result, the separation distance between the outer surface HOS of the first holder LAH1 of the first lens holder on the first bobbin 1222a and the guiding portion GP may vary along the optical axis direction.

[0324] For example, the separation distance between the outer surface HOS of the first lens holder LAH1 and the guiding portion GP may increase along the optical axis. As a result, the thickness of the bonding member BM may also increase along the optical axis in the region in contact with the first lens holder or the first groove.

[0325] Referring to Figure 27, a second camera actuator according to another embodiment may further include a moving assembly, housing, drive unit, base unit, substrate unit, and stopper. Furthermore, the second camera actuator may further include a shielding can (not shown), an elastic unit (not shown), and a connecting member (not shown).

[0326] Furthermore, the description of the first lens assembly (or first bobbin) mentioned above can be applied to the second camera actuator in the same way, except for the following:

[0327] The first lens holder LAH1 of the first bobbin 1222a can be tilted at a predetermined angle in a first or second direction with respect to the optical axis. For example, the first lens holder LAH1 of the first bobbin 1222a can be tilted at a second angle (θb) in the second direction with respect to the optical axis. As a result, the separation distance between the outer surface HOS of the first holder HOS of the first lens holder LAH1 on the first bobbin 1222a and the guiding portion GP can vary along the optical axis direction.

[0328] For example, the separation distance between the outer surface HOS of the first lens holder LAH1 and the guiding portion GP may decrease along the optical axis. As a result, the thickness of the bonding member BM may also decrease along the optical axis in the region in contact with the first lens holder or the first groove.

[0329] Figure 28 is a schematic diagram illustrating a circuit board according to an embodiment.

[0330] Referring to Figure 28, as described above, the circuit board 1300 according to the embodiment may include a first circuit board section 1310 and a second circuit board section 1320. The first circuit board section 1310 is located below the base and can be coupled to the base. An image sensor IS may be placed on the first circuit board section 1310. The first circuit board section 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 section) 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.

[0331] Furthermore, the second circuit board portion 1320 can be located on the side of the base. In particular, the second circuit board portion 1320 can be located on the first side of the base. This allows the second circuit board portion 1320 to be located adjacent to the first coil, which is located adjacent to the first side, making electrical connection easier. Also, the second circuit board portion 1320 can be located on the second side. Thus, there can be multiple second circuit board portions 1320. However, this is not limited to this, and they may be arranged on only one of the first or second side.

[0332] Furthermore, the circuit board 1300 may include additional fixed substrates (not shown) located on its sides. This allows the circuit board 1300 to be bonded to the base while maintaining rigidity through the fixed substrates, even if it is made of a flexible material.

[0333] The second circuit board portion 1320 of the circuit board 1300 can be located on the side of the drive unit 1250. The circuit board 1300 can be electrically connected to the first drive unit and the drive unit. For example, the electrical connection may consist of an SMT. However, it is not limited to this configuration.

[0334] Such circuit boards 1300 may include, but are not limited to, circuit boards with electrically connectable wiring patterns, such as rigid PCBs, flexible PCBs, and rigid-flexible PCBs.

[0335] Furthermore, the circuit board 1300 can be electrically connected to other camera modules or the terminal's processor. Through this connection, the aforementioned camera actuator and the camera module containing it can send and receive a variety of signals within the terminal.

[0336] Figure 29 is a perspective view of a mobile terminal to which the camera module according to the embodiment is applied.

[0337] As shown in Figure 29, 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.

[0338] The camera module 1000 may include an image capture function and an autofocus function. For example, the camera module 1000 may include an autofocus function that utilizes the image.

[0339] The camera module 1000 processes still images or video frames obtained by the image sensor in shooting mode or video call mode.

[0340] The processed image frame can be displayed on a designated display unit and stored in memory. A camera (not shown) may also be located on the front of the mobile terminal body.

[0341] For example, camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and the first camera module 1000A may enable OIS implementation along with AF or zoom functionality.

[0342] The flash module 1530 may include a light-emitting element that emits light internally. The flash module 1530 can be activated by the camera operation of the mobile terminal or by user control.

[0343] The autofocus device 1510 may include one of the surface light emission laser elements in a package as the light-emitting unit.

[0344] The autofocus device 1510 may include a laser-based autofocus function. The autofocus device 1510 may be primarily used in conditions where the autofocus function using the image from the camera module 1000 is impaired, such as close-range shots of 10m or less or in dark environments.

[0345] The autofocus device 1510 may include a light-emitting section containing a vertical cavity surface-emitting laser (VCSEL) semiconductor element and a light-receiving section such as a photodiode that converts light energy into electrical energy.

[0346] Figure 30 is a perspective view of a vehicle to which the camera module according to the embodiment is applied.

[0347] For example, Figure 30 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.

[0348] Referring to Figure 30, the vehicle 700 of the embodiment may be equipped with wheels 13FL, 13FR that rotate by a power source, and a predetermined sensor. The sensor may be, but is not limited to, a camera sensor 2000.

[0349] The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 of the embodiment can acquire video information through the camera sensor 2000 which captures forward video or surrounding video, and can use the video information to determine the lane unidentified situation and generate a virtual lane when it is unidentified.

[0350] For example, the camera sensor 2000 captures images of the area in front of the vehicle 700 to obtain forward-facing video footage, and a processor (not shown) can analyze objects contained in this forward-facing video footage to obtain video information.

[0351] For example, if the video captured by the camera sensor 2000 includes objects such as lane markings, adjacent vehicles, obstacles to driving, and indirect road markings such as median strips, curbs, and street trees, the processor can detect these objects and include them in the video information. At this time, the processor can acquire distance information to the objects detected through the camera sensor 2000 and further supplement the video information.

[0352] The video information may be information about objects captured in the video. Such a camera sensor 2000 may include an image sensor and a video processing module.

[0353] The camera sensor 2000 can process still images or videos obtained by an image sensor (e.g., CMOS or CCD).

[0354] The image processing module can process still images or videos acquired through the image sensor, extract necessary information, and transmit the extracted information to the processor.

[0355] At this time, the camera sensor 2000 may include, but is not limited to, a stereo camera to improve the accuracy of object measurement and to secure more information such as the distance between the vehicle 700 and the object.

[0356] The above description has focused on embodiments, but these are merely illustrative and do not limit the present invention. Those with ordinary skill in the art to which the present invention belongs will understand that various modifications and applications not exemplified above are possible without departing from the essential characteristics of these embodiments. For example, each component specifically shown in the embodiments can be modified and implemented. Differences related to such modifications and applications should be interpreted as being included within the scope of the present invention as defined in the appended claims.

Claims

1. housing; A first bobbin disposed within the housing; and Includes a drive unit for moving the first bobbin in the optical axis direction; The first bobbin is A first lens holder for housing the lens; A first guiding portion disposed on the side of the housing; and A camera actuator comprising a bonding member disposed between the first lens holder and the first guiding portion;

2. The first lens holder includes a first surface that contacts the bonding member; The camera actuator according to claim 1, wherein the first guiding portion includes a second surface that contacts the bonding member;

3. The first surface includes a first groove, The camera actuator according to claim 2, wherein the second surface of the first guiding portion includes a second groove.

4. The camera actuator according to claim 3, wherein the first groove and the second groove overlap in the direction from the first surface toward the second surface.

5. The first surface includes a first projection disposed within the first groove; The camera actuator according to claim 3, wherein the second surface includes a second projection disposed within the second groove.

6. The camera actuator according to claim 5, wherein the first projection and the second projection overlap in the direction from the first surface to the second surface.

7. The first guiding portion includes a third surface located on the opposite side of the second surface; The camera actuator according to claim 2, wherein the third surface of the first guiding portion faces the side portion of the housing and includes a recess in which a ball is positioned.

8. The camera actuator according to claim 2, wherein the side portion of the housing includes a first side portion having an inner surface facing the first guiding portion of the first bobbin and a second side portion facing the first side portion.

9. The housing includes an upper surface and a lower surface positioned between the first side and the second side, The aforementioned upper surface includes a first hole; The camera actuator according to claim 8, wherein the lower surface includes a second hole.

10. The camera actuator according to claim 9, wherein the bonding member is exposed by at least one of the first hole and the second hole.

Images