Camera actuator

Abstract

A camera actuator according to an embodiment includes a housing, a prism unit disposed in the housing, and a driving unit disposed in the housing and tilting the prism unit. The driving unit includes a first piezoelectric device disposed in an area overlapping in a first direction with respect to a center of the prism unit, and a second piezoelectric device disposed in an area overlapping in a second direction different from the first direction with respect to the center of the prism unit. The prism unit is disposed to be tiltable in the second direction by the first piezoelectric device, and disposed to be tiltable in the first direction by the second piezoelectric device.

Description

Technical Field

[0001] The embodiments involve camera actuators and camera modules. Background Technology

[0002] Camera modules capture objects and store them as images or videos, and are installed in various devices, such as mobile terminals, mobile phones, laptops, drones, and vehicles.

[0003] Typically, the aforementioned devices are equipped with a miniature camera module, which can perform autofocus (AF) by automatically adjusting the distance between the image sensor and the lens to align with the lens's focal length. Additionally, the camera module can perform zoom functions by increasing or decreasing the magnification of distant objects via a zoom lens.

[0004] Meanwhile, the zoom actuator is used for the zoom function in the camera module. However, when the lens moves due to the mechanical movement of the actuator, frictional torque is generated, and problems such as reduced driving force, increased power consumption, and deterioration of control characteristics occur due to this frictional torque.

[0005] In particular, to achieve optimal optical performance by using multiple zoom lens groups in the camera module, alignment is required not only between the lens groups but also between the lens groups and the image sensor. However, if there is eccentricity (the center of the spherical surface between the lens groups deviates from the optical axis), lens tilting, or misalignment between the central axes of the lens groups and the image sensor, the viewing angle may change or the focus may be lost, which can adversely affect image quality or resolution.

[0006] In addition, when attempting to increase the spacing in the area where friction is generated in order to reduce frictional torque resistance, while moving the lens used for zoom function in the camera module, there is a technical problem that exacerbates lens eccentricity or lens tilt during zoom movement or zoom motion reversal.

[0007] In addition, recent camera modules have adopted image stabilization (IS) technology to correct or prevent image jitter caused by camera movement due to unstable fixtures or user movement.

[0008] Such image stabilization (IS) technologies include optical image stabilizer (OIS) technology and image stabilization technology using image sensors. In this case, OIS technology is a technique that corrects motion by changing the optical path, while image stabilization technology using image sensors is a technique that compensates for motion through mechanical and electronic methods. Recently, OIS technology has been increasingly adopted.

[0009] Simultaneously, the camera module may include a reflective member and a driving unit capable of altering the optical path to achieve OIS functionality. The reflective member can be tilted and controlled by a driving force applied from the driving unit, and the optical path can be altered during this process. For example, when the camera module detects a hand shaki waveform generated by the user, the reflective member can tilt to compensate for the hand shaki waveform. However, due to issues such as noise and component synchronization, there is a problem where a relatively small vibration waveform or deviation occurs between the hand shaki waveform and the compensating waveform. In this case, the optical performance of the camera module may deteriorate, and the OIS function may not be effective.

[0010] Therefore, a new camera module is needed that can solve the above problems. Summary of the Invention

[0011] Technical issues

[0012] One embodiment provides a camera actuator and camera module with improved optical performance.

[0013] Additionally, the embodiments provide a camera actuator and camera module that can effectively control vibrations caused by hand tremors.

[0014] Additionally, the embodiments provide a camera actuator and camera module with improved autofocus and high magnification zoom capabilities.

[0015] Additionally, the embodiments provide a camera actuator and camera module that can prevent problems such as eccentricity, tilting, and friction when the lens group is moved.

[0016] The technical problems to be solved by the proposed embodiments are not limited to those described above, and those skilled in the art can clearly understand other technical problems not mentioned from the embodiments presented in the following description.

[0017] Technical solution

[0018] The camera actuator according to an embodiment includes: a housing; a prism portion disposed in the housing; and a drive portion disposed in the housing and tilting the prism portion; wherein the drive portion includes: a first piezoelectric element disposed in a region overlapping with the center of the prism portion in a first direction; and a second piezoelectric element disposed in a region overlapping with the center of the prism portion in a second direction different from the first direction, and wherein the prism portion is configured to be tiltable in the second direction by means of the first piezoelectric element, and is configured to be tiltable in the first direction by means of the second piezoelectric element.

[0019] Additionally, the prism section includes a prism and a prism mover disposed around the prism, wherein the prism mover includes a first side facing the drive section, and wherein the first side includes a first protrusion corresponding to the first piezoelectric element and a second protrusion corresponding to the second piezoelectric element.

[0020] In addition, the first piezoelectric element contacts the first protrusion, and the second piezoelectric element contacts the second protrusion.

[0021] Additionally, the camera actuator also includes a retainer to which the prism portion is coupled, wherein the retainer includes a second side corresponding to a first side of the prism mover, and wherein the second side includes a first retainer hole corresponding to a first piezoelectric element and a first protrusion, and a second retainer hole corresponding to a second piezoelectric element and a second protrusion.

[0022] Additionally, the retainer includes a rotation guide, a recess of the prism mover fitted into the rotation guide, and the recess of the prism mover and the rotation guide include inclined surfaces.

[0023] In addition, the camera actuator also includes an elastic part that is connected to the retainer and the prism part, and applies pressure and supports the prism part in the direction toward the second side.

[0024] In addition, the drive unit includes a reinforcing plate and a substrate portion disposed on the reinforcing plate, wherein the first piezoelectric element and the second piezoelectric element are electrically connected to the substrate portion when attached to the reinforcing plate.

[0025] In addition, the substrate portion includes an opening that exposes the area on one surface of the reinforcing plate where the first piezoelectric element and the second piezoelectric element are to be disposed.

[0026] In addition, the camera actuator also includes an adhesive portion disposed on a surface of a reinforcing plate exposed through an opening, through which the first piezoelectric element and the second piezoelectric element are attached to the reinforcing plate.

[0027] In addition, the drive unit includes a welding section that electrically connects the first piezoelectric element and the second piezoelectric element to the substrate section.

[0028] Additionally, the substrate portion includes: a first region disposed within the housing's receiving space; and a second region extending from the first region and exposed outside the base portion.

[0029] Additionally, the housing includes: a housing hole corresponding to the second region of the substrate portion; and a protrusion to which the second region of the substrate portion is connected.

[0030] In addition, the second region of the substrate is connected to the housing and supports the drive unit and the prism unit to float within the housing's accommodating space.

[0031] Beneficial effects

[0032] The camera actuator and camera module according to the embodiments can effectively control vibrations caused by hand tremors. Specifically, the embodiments may include a drive unit capable of controlling the tilt of the prism section on a first axis or a second axis. In this case, the drive unit can control the tilt of the prism section relative to the first axis or the second axis. The drive unit may include a piezoelectric element. The drive unit including the piezoelectric element can drive a displacement as large as the drive displacement generated by the hand tremor vibration. When current is supplied, the drive unit including the piezoelectric element can tilt the prism section by 1 micrometer (unit), thus effectively correcting minute hand tremors. Therefore, vibrations caused by hand tremors can be effectively controlled, thereby improving optical performance.

[0033] Furthermore, the camera actuator and camera module according to the embodiment can have improved optical performance. Specifically, in the camera actuator and camera module according to the embodiment, the drive unit for moving the lens group can include a piezoelectric element, and the lens group can be more precisely controlled by the drive unit. Additionally, the camera actuator and camera module according to this embodiment can minimize friction generated during lens group movement. Therefore, the embodiment can provide further improved autofocus and zoom functions. Attached Figure Description

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

[0035] Figure 2 yes Figure 1 An exploded perspective view of the first camera actuator shown.

[0036] Figure 3 yes Figure 2 The exploded perspective view of the drive module shown.

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

[0038] Figure 5 and Figure 6 This is a stereoscopic view of the prism section of the first camera actuator.

[0039] Figures 7 to 9b This is a three-dimensional view of the retainer of the first camera actuator.

[0040] Figure 10 This is a three-dimensional view of the elastic part of the first camera actuator.

[0041] Figure 11 This is a view showing the connection of the elastic part, prism part, and retainer of the first camera actuator.

[0042] Figure 12 This is an exploded perspective view of the drive unit of the first camera actuator.

[0043] Figure 13 This is a three-dimensional view of the substrate that constitutes the drive unit.

[0044] Figure 14 This is a three-dimensional view of the drive unit of the first camera actuator.

[0045] Figure 15 This is a view showing the connection between the drive unit and the base.

[0046] Figures 16a to 16f This is a view showing the manufacturing method of the drive unit according to the process sequence.

[0047] Figure 16g This is a view showing the connection relationship between the prism section and the drive section according to an embodiment.

[0048] Figure 17 This is an example diagram showing the drive section of the first camera actuator operating according to an embodiment.

[0049] Figure 18 This is a connection view of the first camera actuator and the second camera actuator according to an embodiment.

[0050] Figure 19 This is an exploded perspective view of the first camera actuator and the second camera actuator according to an embodiment.

[0051] Figure 20 This is an exploded perspective view of the second camera actuator according to an embodiment.

[0052] Figure 21 This is a cross-sectional view of the second camera actuator according to an embodiment.

[0053] Figure 22 This is a front view of the second camera actuator according to an embodiment.

[0054] Figure 23 This is a perspective view showing the third and fourth drive units disposed in the housing of the second camera actuator according to an embodiment.

[0055] Figure 24 and Figure 25 This is an exploded perspective view of the first drive unit and the second drive unit according to an exemplary embodiment.

[0056] Figure 26 This is a perspective view of some components in the second camera actuator according to an embodiment.

[0057] Figure 27 This is a perspective view of a mobile terminal that uses a camera module according to an embodiment.

[0058] Figure 28 This is a perspective view of a vehicle using a camera module according to an embodiment. Detailed Implementation

[0059] In the following, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0060] However, the spirit and scope of the invention are not limited to the parts of the described embodiments, and may be implemented in various other forms. Furthermore, one or more of the elements in the embodiments may be selectively combined and substituted within the spirit and scope of the invention.

[0061] Furthermore, unless otherwise explicitly defined and described, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as having the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains, and terms such as those defined in common dictionaries may be interpreted as having a meaning consistent with their meaning in the context of the relevant field.

[0062] Furthermore, the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the invention. In this specification, unless specifically stated in the phrase, the singular form may also include the plural form, and may include at least one of all combinations that can be combined among A, B and C when described in “at least one (or more) of A, B and C”.

[0063] Furthermore, in describing the elements of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are used only to distinguish an element from other elements, and the terms are not limited to the nature, order, or sequence of the elements. Additionally, when an element is described as being “connected,” “linked,” or “in contact” with another element, it can include not only when the element is directly “connected,” “linked,” or “in contact” with another element, but also when the element is “connected,” “linked,” or “in contact” with another element between the element and other elements.

[0064] Additionally, when described as being formed or disposed "above" or "below" each element, "above" or "below" can include not only when two elements are directly connected to each other, but also when one or more other elements are formed or disposed between two elements. Furthermore, when expressed as "above" or "below," it can include not only the upward direction based on a single element, but also the downward direction based on a single element.

[0065] The optical axis direction used below can be defined as the optical axis direction of the lens that connects to the camera actuator and the camera module, and the vertical direction can be defined as the direction perpendicular to the optical axis.

[0066] The autofocus function used below can be defined as the function of automatically focusing on the object by adjusting the distance to the image sensor by moving the lens along the optical axis according to the distance to the object, so that the image sensor can acquire a clear image of the object.

[0067] Meanwhile, autofocus can be interpreted as AF (Auto Focus). Additionally, closed-loop autofocus (CLAF) control can be defined as real-time feedback control of the lens position that improves focus adjustment accuracy by sensing the distance between the image sensor and the lens.

[0068] Furthermore, before describing the embodiments of the present invention, the first direction may refer to the x-axis direction shown in the figures, and the second direction may be a direction different from the first direction. For example, the second direction may refer to the y-axis direction shown in the figures, which is perpendicular to the first direction. Moreover, the third direction may be different from the first and second directions. For example, the third direction may refer to the z-axis direction shown in the figures, which is perpendicular to both the first and second directions. Here, the third direction may refer to the optical axis direction.

[0069] In the following description, the construction of the camera module according to this embodiment will be described with reference to the accompanying drawings.

[0070] Figure 1 This is a perspective view of the first camera actuator according to an embodiment. Figure 2 yes Figure 1 An exploded perspective view of the first camera actuator shown, and Figure 3 yes Figure 2 The exploded perspective view of the drive module shown.

[0071] The first camera actuator 1000 may be an optical image stabilizer (OIS) actuator. The first camera actuator 1000 may change the path of light incident on the camera module 10.

[0072] refer to Figures 1 to 3 The first camera actuator 1000 may include a housing 100 and a drive module 200 disposed on the housing 100.

[0073] Additionally, the drive module 200 may include a prism part 300, a drive retainer 400, an elastic part 500, and a drive part 600.

[0074] The first camera actuator 1000 according to the embodiment described above includes a drive unit 600. The drive unit 600 includes a plurality of piezoelectric elements (described later) respectively disposed in a first axial direction and a second axial direction perpendicular to the first axial direction. The piezoelectric elements of the drive unit 600 are in contact with the prism unit 300. In addition, the piezoelectric elements can be mechanically deformed by applied power. Specifically, the piezoelectric elements can expand toward one side of the prism unit 300 or contract in the opposite direction by applied power. For example, the piezoelectric elements can expand or contract in the optical axis direction. In addition, the prism unit 300 can be tilted in the first axial direction or the second axial direction by the expansion and contraction operation of the piezoelectric elements.

[0075] Additionally, the first camera actuator 1000 may also include a cover member (not shown). The cover member (not shown) may include a receiving space, and at least one side may be open. For example, the cover member may be disposed around the outer surface of the housing. Preferably, a portion of the drive unit 600 may be disposed on the outer surface of the housing 100. For example, a portion of the drive unit 600 may be coupled to the housing 100. Specifically, the base plate portion 630 of the drive unit 600 may be disposed on the outer surface of the housing 100.

[0076] Specifically, the drive module 200 can be housed within the receiving space of the housing 100. In this case, the drive module 200 can be disposed in a floating manner within the receiving space of the housing 100. Here, "floating" can mean that the drive module 200 is supported by the housing 100 by some of its components, and that the other components are disposed in a floating state within the receiving space. For example, only the base plate portion 630 of the drive section 600 in the drive module 200 can be connected to the housing 100. In addition, other components of the drive module 200 besides the base plate portion 630 can be supported by the base plate portion 630 and placed in a floating state within the housing 100.

[0077] Additionally, the cover member may be disposed around a portion of the drive unit 600 provided on the outer surface of the housing 100. Therefore, the cover member can protect a portion of the drive unit 600, the housing 100, and the prism unit 300. The cover member may have a structure with multiple open side surfaces connected to each other. The cover member may have a structure in which the front surface, lower surface, and rear surface are open, light is incident from the outside through the front surface, the lower surface corresponds to the first camera actuator 1000, and the rear surface is opposite to the front surface, and the cover member can provide a light movement path for the prism unit 300 (described later).

[0078] The cover member may include a rigid material. For example, the cover member may include a material such as resin or metal, and may support the housing 100 disposed in the receiving space. For example, the cover member may surround and support the housing 100, the drive unit 600, and the prism unit 300.

[0079] The first camera actuator 1000 according to this embodiment will be described in more detail below.

[0080] Figures 4 to 17 This is a perspective view of each component of the first camera actuator according to an embodiment.

[0081] The first camera actuator 1000 according to the embodiment may include a housing 100 and a drive module 200. Additionally, the drive module 200 may include a prism portion 300, a retainer 400, an elastic portion 500, and a drive portion 600.

[0082] The prism section 300 may include a prism 300b and a prism mover 300a.

[0083] Additionally, the drive unit 600 may include a reinforcing plate 610, a first adhesive portion 620, a substrate portion 630, a second adhesive portion 640, and a piezoelectric element 650.

[0084] According to an embodiment, the drive unit 600 can be disposed in a receiving space within the housing 100. According to an embodiment, having a drive unit 600 disposed on the housing 100, it thus provides the technical effect of providing an ultra-thin and ultra-compact camera actuator and a camera module including the camera actuator. Furthermore, according to an embodiment, the piezoelectric element 650 can be used to precisely tilt the prism section 300, thus enabling precise image stabilization and improving the reliability of OIS operation.

[0085] The embodiment allows the problem of lens size limitation in the lens assembly of the optical system to be solved when OIS is implemented by placing the drive unit 600 only on one side of the prism unit 300. Therefore, it has the technical effect of ensuring a sufficient amount of light.

[0086] In addition, this embodiment allows the use of a drive unit 600 stably disposed on the housing 100 to control the tilt of the prism unit 300 relative to the first axis or the second axis. Therefore, there is a technical effect that the best optical performance can be produced by minimizing the occurrence of eccentricity or tilt when implementing OIS.

[0087] Furthermore, unlike moving multiple conventional solid lenses, this embodiment implements OIS by providing a drive unit 600 to tilt the prism unit 300 on a first axis or a second axis, thus achieving the technical effect of realizing OIS with low power consumption.

[0088] In the following text, each component of the first camera actuator 1000 will be described in detail with reference to the accompanying drawings.

[0089] <Shell>

[0090] Figure 4 This is a perspective view of the housing of the camera actuator according to an embodiment.

[0091] refer to Figure 4 The housing 100 may include a receiving space that accommodates a drive module 200 including a prism part 300, a retainer 400, an elastic part 500 and a drive part 600.

[0092] The housing 100 may include a plurality of sides surrounding the receiving space based on the receiving space.

[0093] For example, the housing 100 may include a first side 110, a second side 120, a third side 130, a fourth side 140, and a fifth side 150 disposed simultaneously around the receiving space.

[0094] The first side portion 110 may correspond to the left side of the receiving space. The second side portion 120 may correspond to the right side of the receiving space. The third side portion 130 may correspond to the rear side of the receiving space. The fourth side portion 140 may correspond to the upper side of the receiving space. The fifth side portion 150 may correspond to the lower side of the receiving space. As described above, the housing 100 may be provided around multiple sides of the receiving space. In this case, the housing 100 may expose at least one side of the receiving space. In the figure, the housing 100 may expose the front side of the receiving space. The front side of the housing 100 may be the space in which the drive module 200 is inserted into the receiving space of the housing 100. For example, when the housing 100 and the drive module 200 are interconnected, the drive module 200 can be inserted through the front side of the housing 100. In addition, the front side of the housing 100 may be an output section for light emitted by the prism section 300. Therefore, in this embodiment, the front of the housing 100 is open, so that light reflected by the prism portion 300 is provided to the second actuator (described later) while the drive module 200 is easily inserted into the receiving space of the housing 100.

[0095] The housing 100 described above can have a hexahedral shape, but is not limited to this.

[0096] Additionally, the first open area 141 may be provided on the fourth side 140 of the housing 100. The first open area 141 may be a region corresponding to the prism portion 300 of the drive module 200 provided in the receiving space of the housing 100. Preferably, the first open area 141 may be a light inlet for providing light to the prism portion 300.

[0097] Additionally, a second open area 151 may be formed on the fifth side portion 150 of the housing 100. The second open area 151 may be an open area for exposing some components of the drive module 200 disposed in the receiving space of the housing 100 to the outside of the housing 100. Preferably, the second open area 151 may expose a portion of the base plate portion 630 of the drive unit 600 to the outside of the housing 100. Specifically, the base plate portion 630 includes a first region (described later) disposed in the receiving space of the housing 100 and a second region extending from the first region and disposed outside the housing 100 through the second open area 151. Furthermore, the drive module 200 may be supported on the housing 100 by the second region of the base plate portion 630. Additionally, components other than the second region of the base plate portion 630 of the drive module 200 may be floatingly disposed in the receiving space of the housing 100. For example, only the second region of the base plate portion 630 of the drive module 200 may contact the housing 100, while other components may not contact the housing 100.

[0098] Additionally, the housing 100 may include a plurality of housing holes (not shown). The housing holes may be through holes passing through the inner and outer surfaces of each side of the housing 100.

[0099] Additionally, the housing 100 may include a protrusion (not shown) disposed on at least one of the plurality of sides. The protrusion (not shown) may include a connecting protrusion that is connected to a second region of the substrate portion 630.

[0100] Specifically, the housing 100 may include a connecting protrusion 152 disposed on the lower surface of the fifth side portion 150, and the base plate portion 630 of the drive portion 600 is coupled to the connecting protrusion.

[0101] <Prism Section>

[0102] Figure 5 and Figure 6 This is a stereoscopic view of the prism section of the first camera actuator.

[0103] Specifically, Figure 5This is an exploded perspective view of the prism section 300 of the first camera actuator according to an embodiment, and Figure 6 yes Figure 5 A perspective view of the prism mover 300a of the prism section 300.

[0104] refer to Figure 5 and Figure 6 The prism portion 300 can be disposed within the housing 100. Specifically, the prism portion 300 can be disposed within the receiving space of the housing 100.

[0105] The prism section 300 may include a prism 300b and a prism mover 300a disposed on the prism 300b.

[0106] Prism 300b can be a right-angle prism. Prism 300b can reflect the direction of light incident from the outside. That is, prism 300b can change the path of light incident from the outside toward the second camera actuator 2000 and onto the first camera actuator 1000.

[0107] A prism mover 300a may be disposed below prism 300b. The prism mover 300a may be disposed around prism 300b. At least one side of the prism mover 300a may be open and may include a receiving space. Specifically, the prism mover 300a may have a structure in which multiple sides connected to each other are open. For example, the prism mover 300a may have a structure in which the side corresponding to prism 300b is open, and may include a receiving space defined as a first space 340. For example, the prism mover 300a may have a structure in which the upper and front sides are open. The open upper side of the prism mover 300a may serve as a light inlet for providing external light to prism 300b. Additionally, the open front side of the prism mover 300a may serve as a light output section, which provides light reflected by prism 300b to a second camera actuator.

[0108] The prism mover 300a may include an inner surface 341. The inner surface 341 may be the inner surface constituting the first space 340. The first space 340 may have a shape corresponding to the shape of the prism 300b. The inner surface 341 of the first space 340 may directly contact the prism 300b. That is, the inner surface 341 of the first space 340 may be tilted to correspond to the tilt angle of the prism 300b.

[0109] The prism mover 300a may include a step (not shown). For example, the step may cover a portion of the front side of the prism mover 300a. For example, the step may cover the front side of the prism mover 300a in a range that does not cover the light output area of ​​the prism 300b. Therefore, the prism 300b may contact the step when it is disposed in the first space 340 of the prism mover 300a. Thus, separation of the prism 300b from the prism mover 300a can be prevented. However, the embodiments are not limited thereto, and an adhesive member (not shown), such as epoxy resin, may be applied to the inner surface 341 of the first space 340. In addition, the prism 300b may be firmly fixed to the prism mover 300a by the adhesive force provided from the adhesive member (not shown).

[0110] The step can be used as a guide and / or mounting part for the prism 300b. Alternatively, a protrusion corresponding to the step can be provided on the outer side of the prism 300b, but it is not limited to this.

[0111] The protrusion or one end of prism 300b can be guided to the step of prism mover 300a and disposed in the first space 340. Therefore, prism mover 300a can effectively support prism 300b. In addition, prism 300b can be positioned in a set location and can have improved alignment characteristics within prism mover 300a.

[0112] The prism portion 300 may include multiple sides. For example, the prism mover 300a of the prism portion 300 may include multiple sides. The prism mover 300a may include a first side 310 corresponding to a first side 110 of the housing 100. Additionally, the prism mover 300a may include a second side 320 corresponding to a second side 120 of the housing 100. Furthermore, the prism mover 300a may include a third side 330 corresponding to a third side 130 of the housing 100.

[0113] The prism mover 300a may include a recess 370. The recess 370 may be disposed on the lower side of the prism mover 300a. For example, the recess 370 may have a concave shape in the direction from the lower side to the upper side of the prism mover 300a.

[0114] The recess 370 can be used as a connecting part for connecting the prism mover 300a to the retainer 400 (described later).

[0115] The recess 370 may include an inclined surface 371. When the prism mover 300a rotates about a second axis, the inclined surface 371 can guide the rotational movement along the second axis. For example, the prism mover 300a can be connected to the retainer 400 by inserting the recess 370 into the rotation guide 440 of the retainer 400, as will be described later. Furthermore, with the rotation guide 440 inserted into the recess 370, the prism mover 300a can be rotated by a driving force provided from the drive unit 600. For example, the prism mover 300a can rotate about a second axis corresponding to the direction in which the rotation guide 440 is provided. In this case, the recess 370 includes the inclined surface 371 as described above. Additionally, the inclined surface 371 can more easily guide the rotation of the prism mover 300a. For example, when the prism mover 300a rotates, the rotation guide 440 can rotate in a sliding manner corresponding to the tilt angle of the inclined surface 371, thereby allowing for easier rotational movement. For example, the prism mover 300a can rotate by an angle corresponding to a slight change in the driving force provided by the drive unit 600. Meanwhile, as described later, the width of the recess 370 in the optical axis direction can be smaller than the width of the rotation guide 440 in the optical axis direction. Therefore, with the recess 370 inserted into the rotation guide 440, a predetermined separation portion G can be formed between the rotation guide 440 and the recess 370. Furthermore, the prism mover 300a can rotate based on a first axis corresponding to the width of the separation portion G.

[0116] In summary, the recess 370 of the prism mover 300a can be used as a connecting part to connect the prism mover 300a to the retainer 400, for a rotational guiding function to guide rotation along the second axis, and as a stop to limit the range of rotation when rotating along the first axis.

[0117] Meanwhile, multiple protrusions can be provided on the outer surface of the third side 330 of the prism mover 300a.

[0118] The multiple protrusions may include: a first protrusion 331, which is provided in the vertical direction (y-axis direction) based on the center point C of the outer surface of the third side portion 330 of the prism mover 300a; and a second protrusion 332, which is formed in the left-right direction (x-axis direction) based on the center point (C).

[0119] The first protrusion 331 and the second protrusion 332 may have a semi-circular shape with rounded ends, but are not limited thereto.

[0120] The first protrusion 331 and the second protrusion 332 can contact the piezoelectric element 650 of the drive unit 600. In addition, the first protrusion 331 and the second protrusion 332 can contact the piezoelectric element 650 of the drive unit 600 to rotate the rotation axis of the prism mover 300a by the driving force provided by the piezoelectric element 650.

[0121] The first protrusion 331 and the second protrusion 332 may be provided on the outer surface of the third side portion 330 facing the drive portion 600.

[0122] Furthermore, the first protrusion 331 can contact the first piezoelectric element 651 of the drive unit 600. Moreover, the second protrusion 332 can contact the second piezoelectric element 652 of the drive unit 600.

[0123] The first protrusion 331 may include a first-1 protrusion 331a and a first-2 protrusion 331b arranged in a second direction or a vertical direction corresponding to the y-axis, based on the center point C of the outer surface of the third side portion 330.

[0124] The first protrusion 331a and the first protrusion 331b can contact the first piezoelectric element 651 of the drive unit 600. Furthermore, the prism mover 300a can rotate about a virtual line connecting the first protrusion 331a and the first protrusion 331b as a rotation axis. For example, the prism mover 300a can rotate using the virtual line connecting the first protrusion 331a and the first protrusion 331b as a rotation axis, driven by the driving force provided by the second piezoelectric element 652.

[0125] Additionally, the second protrusion 332 includes a second-1 protrusion 332a and a second-2 protrusion 332b arranged in a first direction or left-right direction corresponding to the x-axis, based on the center point C of the third side portion 330.

[0126] The second-first protrusion 332a and the second-second protrusion 332b can contact the second piezoelectric element 652 of the drive unit 600. Furthermore, the prism mover 300a can rotate about a virtual line connecting the second-first protrusion 332a and the second-second protrusion 332b as a rotation axis. For example, the prism mover 300a can rotate using the virtual line connecting the second-first protrusion 332a and the second-second protrusion 332b as a rotation axis, driven by the force provided by the first piezoelectric element 651.

[0127] Meanwhile, the prism mover 300a may include multiple protrusions for connection with the elastic part 500.

[0128] For example, a plurality of third protrusions 350 may be formed on a side surface 311 of the first side portion 310 of the prism mover 300a. The third protrusions 350 may include a third-1 protrusion 351 formed on the upper side of a side surface 311 of the first side portion 310, and a third-2 protrusion 352 spaced apart from the third-1 protrusion 351 and disposed on the lower side of a side surface 311.

[0129] Additionally, a fourth protrusion 360 may be disposed on a side surface 321 of the second side portion 320 of the prism mover 300a. The fourth protrusion 360 may include a fourth-1 protrusion 361 formed on the upper side of a side surface 321 of the second side portion 320, and a fourth-2 protrusion 362 spaced apart from the fourth-1 protrusion 361 and disposed on the lower side of a side surface 321.

[0130] The elastic portion 500 can be attached to the third protrusion 350 and the fourth protrusion 360. Specifically, the elastic portion 500 can be fixed in its attached state to the third protrusion 350 and the fourth protrusion 360 by an adhesive member (not shown) such as epoxy resin.

[0131] <Retainer>

[0132] Figures 7 to 9b This is a three-dimensional view of the retainer of the first camera actuator.

[0133] refer to Figure 7 , Figure 8 , Figure 9a and Figure 9b According to an embodiment, the retainer 400 may be disposed between the drive portion 600 and the prism portion 300.

[0134] The retainer 400 may include a first side 310 corresponding to the first side 110 of the housing 100 and the first side 310 of the prism mover 300a. Additionally, the retainer 400 may include a second side 420 corresponding to the second side 120 of the housing 100 and the second side 320 of the prism mover 300a. Furthermore, the retainer 400 may include a third side 430 corresponding to the third side 130 of the housing 100 and the third side 330 of the prism mover 300a.

[0135] The third side 430 of the retainer 400 can connect one end of the first side 410 of the retainer 400 to one end of the second side 420 of the retainer 400.

[0136] The retainer 400 may include a rotation guide 440.

[0137] The rotation guide 440 can connect the inner surface of the first side 410 of the retainer 400 and the inner surface of the second side 420 of the retainer 400. The rotation guide 440 can be spaced apart from the third side 430 of the retainer 400.

[0138] The rotation guide 440 can be incorporated into the recess 370 of the prism mover 300a. The rotation guide 440 can guide the rotation of the prism mover 300a. In addition, the rotation guide 440 can restrict the rotation of the prism mover 300a.

[0139] The rotation guide 440 may include a flat surface 441 and an inclined surface 442 extending from the flat surface 441. The inclined surface 442 may correspond to the inclined surface 371 of the recess 370 of the prism mover 300a. When the prism mover 300a rotates about a second axis, the inclined surface 442 of the rotation guide 440 can guide the rotational movement of the second axis. For example, the prism mover 300a can be connected to the retainer 400 by inserting the rotation guide 440 of the retainer 400 into the recess 370. Furthermore, with the rotation guide 440 inserted into the recess 370, the prism mover 300a can be rotated by a driving force provided by the drive unit 600. For example, the prism mover 300a can rotate about a second axis corresponding to the direction in which the rotation guide 440 is provided. In this case, the inclined surface 442 of the retainer 400 can more easily guide the rotation of the prism mover 300a. For example, when the prism mover 300a rotates, the rotation guide 440 can slide to correspond to the tilt angle of the tilted surface 371 of the recess 370 and the tilted surface 442 of the rotation guide 440, thereby allowing for easier rotational movement. For example, the prism mover 300a can rotate at an angle corresponding to a slight change in the driving force provided by the drive unit 600.

[0140] Furthermore, the width of the recess 370 in the optical axis direction can be smaller than the width of the rotation guide 440 in the optical axis direction. Therefore, when the recess 370 is inserted into the rotation guide 440, a predetermined separation portion G can be formed between the rotation guide 440 and the recess 370. Additionally, the prism mover 300a can rotate based on a first axis corresponding to the width of the separation portion G.

[0141] In summary, the recess 370 of the prism mover 300a can be used as a connecting part to connect the prism mover 300a to the retainer 400, for a rotational guiding function to guide rotation along the second axis, and as a stop to limit the range of rotation when rotating along the first axis.

[0142] Meanwhile, multiple retainer holes may be formed in the third side portion 430 of the retainer 400.

[0143] The retainer hole of the retainer 400 may be a through hole passing through the outer and inner surfaces of the third side 430.

[0144] The retainer hole of the retainer 400 may be formed in the region corresponding to the piezoelectric element 650 of the drive unit 600. The retainer hole of the retainer 400 may have a size and shape corresponding to the size and shape of the piezoelectric element 650 of the drive unit 600. Part or all of the piezoelectric element 650 of the drive unit 600 may be inserted into and disposed in the retainer hole of the retainer 400.

[0145] Specifically, the retainer hole of the retainer 400 may include a first retainer hole 431 and a second retainer hole 432.

[0146] The first retainer hole 431 may include a first-1 retainer hole 431a and a first-2 retainer hole 431b spaced apart in the y-axis direction, the second direction, or the vertical direction. The first retainer hole 431 may correspond to the first protrusion 331 of the prism mover 300a and the first piezoelectric element 651 of the piezoelectric element 650 of the drive unit 600. Similarly, the second retainer hole 432 may correspond to the second protrusion 332 of the prism mover 300a and the second piezoelectric element 652 of the piezoelectric element 650 of the drive unit 600.

[0147] The first-1 retainer hole 431a can be formed in the region corresponding to the first-1 protrusion 331a of the prism mover 300a. The first-1 retainer hole 431a can be formed in the region corresponding to the first-1 piezoelectric element 651a of the piezoelectric element 650 of the drive unit 600. The first-1 retainer hole 431a can correspond to the first welding portion S1 for fixing the first-1 piezoelectric element 651a to the substrate portion 630 of the drive unit 600.

[0148] The first and second retainer holes 431b can be formed in the region corresponding to the first and second protrusions 331b of the prism mover 300a. The first and second retainer holes 431b can be formed in the region corresponding to the first and second piezoelectric elements 651b of the piezoelectric elements 650 of the drive unit 600. The first and second retainer holes 431b can correspond to the second welding portion S2 for fixing the first and second piezoelectric elements 651b to the substrate portion 630 of the drive unit 600.

[0149] The second retainer hole 432 may include a second-1 retainer hole 432a and a second-2 retainer hole 432b spaced apart in the x-axis direction, the first direction, or the left-right direction. The second retainer hole 432 may correspond to the second protrusion 332 of the prism mover 300a and the second piezoelectric element 652 of the piezoelectric element 650 of the drive part 600.

[0150] The second-first retainer hole 432a can be formed in the region corresponding to the second-first protrusion 332a of the prism mover 300a. The second-first retainer hole 432a can be formed in the region corresponding to the second-first piezoelectric element 652a of the piezoelectric element 650 of the drive unit 600. The second-first retainer hole 432a can correspond to the third welding portion S3 for fixing the second-first piezoelectric element 652a to the substrate portion 630 of the drive unit 600.

[0151] The second-2 retainer hole 432b can be formed in the region corresponding to the second-2 protrusion 332b of the prism mover 300a. The second-2 retainer hole 432b can be formed in the region corresponding to the second-2 piezoelectric element 652b of the piezoelectric element 650 of the drive unit 600. The second-2 retainer hole 432b can correspond to the fourth welding portion S4 for fixing the second-2 piezoelectric element 652b to the substrate portion 630 of the drive unit 600.

[0152] The piezoelectric element 650 of the drive unit 600 and the first protrusion 331 and second protrusion 332 of the prism mover 300a can be configured to directly face each other within the first retainer hole 431 and second retainer hole 432 of the retainer 400. For example, since the piezoelectric element 650 of the drive unit 600 is disposed in the first retainer hole 431 and second retainer hole 432 of the retainer 400, it can be configured to directly contact the first protrusion 331 and second protrusion 332 of the prism mover 300a.

[0153] Meanwhile, the retainer 400 may include a plurality of protrusions for connection with the elastic part 500.

[0154] For example, a plurality of fifth protrusions 450 may be formed on a side surface of the first side portion 410 of the retainer 400. The fifth protrusions 450 may include a fifth-1st protrusion 451 formed on the upper side of a side surface of the first side portion 410 and a fifth-2nd protrusion 452 spaced apart from the fifth-1st protrusion 451 and formed on the lower side of a side surface.

[0155] Additionally, a sixth protrusion 460 may be formed on a side surface of the second side portion 420 of the retainer 400. The sixth protrusion 460 may include a sixth-first protrusion 461 formed on the upper side of a side surface of the second side portion 420, and a sixth-second protrusion 362 spaced apart from the sixth-first protrusion 461 and formed on the lower side of the side surface.

[0156] The elastic portion 500 can be attached to the fifth protrusion 450 and the sixth protrusion 460. Specifically, the elastic portion 500 can be fixed in its attached state to the fifth protrusion 450 and the fourth protrusion 460 by an adhesive member (not shown) such as epoxy resin.

[0157] <Elastic section>

[0158] Figure 10 It is a three-dimensional view of the elastic part of the first camera actuator, and Figure 11 This is a view showing the connection of the elastic part, prism part, and retainer of the first camera actuator.

[0159] refer to Figure 10 and Figure 11 The elastic part 500 may include a first elastic member 510 and a second elastic member 520.

[0160] The first elastic member 510 can be connected to the prism mover 300a and the retainer 400 on one side of the drive module 200. The second elastic member 520 can be connected to the prism mover 300a and the retainer 400 on the other side of the drive module 200.

[0161] The first elastic member 510 and the second elastic member 520 can press and support the prism mover 300a and the prism portion 300 to the retainer 400. For example, when the prism portion 300 is disposed on the retainer 400, the first elastic member 510 and the second elastic member 520 can press and support the prism portion 300 in the direction toward the third side portion 430 of the retainer 400.

[0162] The first elastic member 510 may include a first-1 elastic region 511. Additionally, the first elastic member 510 may include a first-2 elastic region 512 spaced apart from the first-1 elastic region 511. Furthermore, the first elastic member 510 may include a first-3 elastic region 513 connecting the first-1 elastic region 511 and the first-2 elastic region 512. Additionally, the first elastic member 510 may include a first-4 elastic region 514 connecting the first-1 elastic region 511 and the first-2 elastic region 512 and spaced apart from the first-3 elastic region 513.

[0163] The first-1 elastic region 511 can be connected to a side surface of the first side portion 410 of the retainer 400. For this purpose, the first-1 elastic region 511 can have a shape corresponding to a side surface of the first side portion 410 of the retainer 400. Additionally, the first-1 elastic region 511 may include a first-1 fastening hole 515, corresponding to a fifth-1 protrusion 451 formed on a side surface of the first side portion 410 of the retainer 400. Furthermore, the first-1 elastic region 511 may include a first-2 fastening hole 516, corresponding to a fifth-2 protrusion 452 formed on a side surface of the first side portion 410 of the retainer 400.

[0164] The first-second elastic region 512 can be connected to a side surface 311 of the first side portion 310 of the prism mover 300a. Therefore, the first-second elastic region 512 can have a shape corresponding to the side surface 311 of the first side portion 310 of the prism mover 300a. Additionally, the first-second elastic region 512 may include a first-third fastening hole 517, corresponding to a third-first protrusion 351 formed on the side surface 311 of the first side portion 310 of the prism mover 300a. Furthermore, the first-second elastic region 512 may include a first-fourth fastening hole 518, corresponding to a third-second protrusion 352 formed on the side surface 311 of the first side portion 310 of the prism mover 300a.

[0165] The first-third elastic region 513 can connect the first-first elastic region 511 and the first-second elastic region 512. The first-third elastic region 513 may include at least one bending region. The first-fourth elastic region 514 can connect the first-first elastic region 511 and the first-second elastic region 512. The first-fourth elastic region 514 may include at least one bending region.

[0166] The first elastic element 510 presses down on and supports the prism mover 300a while being fastened to the first side 410 of the retainer 400 and the first side 310 of the prism mover 300a.

[0167] The second elastic member 520 may have a shape corresponding to that of the first elastic member 510. For example, the second elastic member 520 may have the same shape as the first elastic member 510.

[0168] The second elastic member 520 may include a second-1 elastic region 521. Additionally, the second elastic member 520 may include a second-2 elastic region 522 spaced apart from the second-1 elastic region 521. Furthermore, the second elastic member 520 may include a second-3 elastic region 523 connecting the second-1 elastic region 521 and the second-2 elastic region 522. Additionally, the second elastic member 520 may include a second-4 elastic region 524 connecting the second-1 elastic region 521 and the second-2 elastic region 522 and spaced apart from the second-3 elastic region 523.

[0169] The second-1 elastic region 521 can be connected to a side surface of the second side portion 420 of the retainer 400. For this purpose, the second-1 elastic region 521 can have a shape corresponding to a side surface of the second side portion 420 of the retainer 400. Additionally, the second-1 elastic region 521 includes a second-1 fastening hole 525, corresponding to a sixth-1 protrusion 461 formed on a side surface of the second side portion 420 of the retainer 400. Furthermore, the second-1 elastic region 521 can include a second-2 fastening hole 526, corresponding to a sixth-2 protrusion 462 formed on a side surface of the second side portion 420 of the retainer 400.

[0170] The second-2 elastic region 522 can be connected to a side surface 321 of the second side portion 320 of the prism mover 300a. Therefore, the second-2 elastic region 522 can have a shape corresponding to the side surface 321 of the second side portion 320 of the prism mover 300a. Additionally, the second-2 elastic region 522 may include a second-3 fastening hole 527, corresponding to a fourth-1 protrusion 361 formed on a side surface 311 of the second side portion 320 of the prism mover 300a. Furthermore, the second-2 elastic region 522 may include a second-4 fastening hole 528, corresponding to a fourth-2 protrusion 362 formed on a side surface 321 of the second side portion 320 of the prism mover 300a.

[0171] The second-third elastic region 523 may connect the second-first elastic region 521 and the second-second elastic region 522. The second-third elastic region 523 may include at least one bending region. The second-fourth elastic region 524 may connect the second-first elastic region 521 and the second-second elastic region 522. The second-fourth elastic region 524 may include at least one bending region.

[0172] The second elastic element 520 presses down on and supports the prism mover 300a while being fastened to the second side 420 of the retainer 400 and the second side 320 of the prism mover 300a.

[0173] <Drive Department>

[0174] Figures 12 to 1 6 is a perspective view of the drive section of the first camera actuator according to an embodiment.

[0175] Specifically, Figure 12 This is an exploded perspective view of the drive unit of the first camera actuator. Figure 13 This is a perspective view of the substrate portion that constitutes the drive unit. Figure 14 This is a three-dimensional view of the drive unit of the first camera actuator. Figure 15 This is a connection view of the drive unit and the base unit. Figures 16a to 16fThis is a view showing the manufacturing method of the drive unit according to the process sequence, and Figure 16g This is a view showing the connection relationship between the prism section and the drive section according to an embodiment.

[0176] refer to Figures 12 to 1 6. The drive unit 600 may include a reinforcing plate 610, a first adhesive part 620, a substrate part 630, a second adhesive part 640, and a piezoelectric element 650.

[0177] The reinforcing plate 610 can be anodized aluminum, but is not limited to this. The reinforcing plate 610 can be used to support the piezoelectric element 650 so that the piezoelectric element 650 can be mounted on the substrate portion 630. Additionally, the reinforcing plate 610 can contact the piezoelectric element 650, thus transferring heat generated from the piezoelectric element 650 to the outside. Furthermore, the reinforcing plate 610 can provide rigidity to the substrate portion 630 on which the piezoelectric element 650 is mounted. The reinforcing plate 610 can be anodized to insulate the welded portions S1, S2, S3, and S4 that electrically connect the substrate portion 630 and the piezoelectric element 650 from each other. Therefore, the reinforcing plate 610 is insulated from the welded portions S1, S2, S3, and S4 to prevent short circuits caused by mutual electrical connections.

[0178] The first adhesive portion 620 may be formed on one surface of the reinforcing plate 610. The first adhesive portion 620 may be an adhesive tape, but is not limited thereto. The first adhesive portion 620 may be configured to attach the substrate portion 630 to the reinforcing plate 610. The first adhesive portion 620 may include a plurality of openings. The first adhesive portion 620 may include a first opening that exposes the area where the piezoelectric element 650 is to be attached on one surface of the reinforcing plate 610. Specifically, the first adhesive portion 620 may include a first-1 opening 621 that exposes the area where the first-1 piezoelectric element 651a is to be mounted on one surface of the reinforcing plate 610. The first adhesive portion 620 may include a first-2 opening 622 that exposes the area where the first-2 piezoelectric element 651b is to be mounted on one surface of the reinforcing plate 610. The first adhesive portion 620 may include a first-third opening 623, which exposes the area where the second-first piezoelectric element 652a is to be mounted on a surface of the reinforcing plate 610. The first adhesive portion 620 may include a first-fourth opening 624, which exposes the area where the second-second piezoelectric element 652b is to be mounted on a surface of the reinforcing plate 610.

[0179] The substrate portion 630 can be attached to a surface of the reinforcing plate 610 via the first adhesive portion 620. The substrate portion 630 can be electrically connected to the piezoelectric element 650 via solder portions S1, S2, S3, and S4. The substrate portion 630 can supply power to the piezoelectric element 650 connected via the solder portions S1, S2, S3, and S4. In addition, the piezoelectric element 650 can be mechanically deformed, such as expanding or contracting, by the supplied power. The substrate portion 630 may include a circuit board with wiring patterns that can be electrically connected, such as a rigid printed circuit board (rigid PCB), a flexible printed circuit board (flexible PCB), and a rigid-flexible printed circuit board (rigid-flexible PCB).

[0180] The substrate portion 630 can also be divided into multiple regions.

[0181] Specifically, the substrate portion 630 may include a first region 631, a second region 632, and a third region 633.

[0182] The first region 631 of the substrate portion 630 may be the region facing the third side portion 430 of the holder 400. The first region 631 of the substrate portion 630 may be a region disposed within the housing 100. The first region 631 of the substrate portion 630 may be a region through which the piezoelectric element 650 is disposed by means of the solder portions S1, S2, S3, and S4. A plurality of second openings may be formed in the first region 631 of the substrate portion 630. The plurality of second openings may correspond to a plurality of first openings formed in the first adhesive portion 620. Furthermore, the plurality of second openings may correspond to the region where the piezoelectric element 650 is disposed.

[0183] That is, the first region 631 of the substrate portion 630 may include a second-first opening 631-1, which corresponds to the first-first opening 621 and exposes the area where the first-first piezoelectric element 651a is to be disposed on one surface of the reinforcing plate 610. The first region 631 of the substrate portion 630 may include a second-second opening 631-2, which corresponds to the first-second opening 622 and exposes the area where the first-second piezoelectric element 651b is to be disposed on one surface of the reinforcing plate 610. The first region 631 of the substrate portion 630 may include a second-third opening 631-3, which corresponds to the first-third opening 623 and exposes the area where the second-first piezoelectric element 652a is to be disposed on one surface of the reinforcing plate 610. The first region 631 of the substrate portion 630 may include a second-fourth opening 631-4, which corresponds to the first-fourth opening 624 and exposes the area where the second-second piezoelectric element 652b is to be installed on a surface of the reinforcing plate 610.

[0184] The second region 632 of the substrate portion 630 may be a region connected to the housing 100. The second region 632 of the substrate portion 630 may be exposed to the outside of the housing 100 through a second open region 151 formed on the fifth side portion 150 of the housing 100.

[0185] Additionally, the second region 632 of the substrate portion 630 may be exposed outside the housing 100, and the housing 100 may include a connection hole 632-1 that engages with a connection protrusion 152 formed on the lower surface of the fifth side portion 150. In this case, the substrate portion 630 is disposed on the lower surface of the fifth side portion 150 of the housing 100 in a state of being bent at 90 degrees relative to the first region 631, so the connection hole 632-1 can be inserted into the connection protrusion 152 and connected to the housing 100.

[0186] The third region 633 of the substrate portion can connect to the first region 631 and the second region 632 of the substrate portion 630. The third region 633 can be a flexible region that can be bent.

[0187] The second adhesive portion 640 may be formed in the region on one surface of the reinforcing plate 610 where the piezoelectric element 650 is disposed. For example, the second adhesive portion 640 may be formed on one surface of the reinforcing plate 610 exposed through the first opening of the first adhesive portion 620 and the second opening of the substrate portion 630.

[0188] Specifically, the second adhesive portion 640 may include a first adhesive member 641, which is formed on a surface of the reinforcing plate 610 exposed through the first-1 opening 621 and the second-1 opening 631-1.

[0189] The second adhesive portion 640 may include a second adhesive member 642 formed on a surface of the reinforcing plate 610 exposed through the first-second opening 622 and the second-second opening 631-2.

[0190] The second adhesive portion 640 may include a third adhesive member 643 formed on a surface of the reinforcing plate 610 exposed through the first-third opening 623 and the second-third opening 631-3.

[0191] The second adhesive portion 640 may include a fourth adhesive member 644 formed on a surface of the reinforcing plate 610 exposed through the first-4 openings 624 and the second-4 openings 631-4.

[0192] The piezoelectric element 650 can be attached to a surface of the reinforcing plate 610 via the second adhesive portion 640. In addition, the piezoelectric element 650 can be electrically connected to the substrate portion 630 via the welding portions S1, S2, S3 and S4.

[0193] The piezoelectric element 650 can be configured to be in direct or indirect contact with the prism mover 300a. The piezoelectric element 650 can be configured to be in direct contact with the first protrusion 331 and the second protrusion 332 formed on the outer surface of the third side portion 330 of the prism mover 300a.

[0194] The piezoelectric element 650 may include a material that undergoes mechanical deformation upon application of power. The piezoelectric element 650 may include a piezoelectric device. The piezoelectric element 650 may include a ceramic material. For example, the piezoelectric element 650 may include ZnO, AlN, LiNbO4, lead antimony stannate, lead magnesium tantalate, lead nickel tantalate, titanate, tungstate, zirconate, lead zirconate titanate [Pb(Zr], ...] x Ti 1-x [O3(PZT)], lead lanthanum zirconate titanate (PLZT), lead niobate zirconate titanate (PNZT), BaTiO3, SrTiO3, lead magnesium niobate, lead nickel niobate, lead manganese niobate, lead zinc niobate, and at least one of lead, barium, bismuth or strontium niobates (including lead titanate).

[0195] The driving unit 600 may include a plurality of piezoelectric elements 650. The plurality of piezoelectric elements 650 may include a first piezoelectric element 651 and a second piezoelectric element 652. The first piezoelectric element 651 and the second piezoelectric element 652 may be respectively disposed in the openings of the substrate portion 630 and the first adhesive portion 620. Specifically, the first piezoelectric element 651 and the second piezoelectric element 652 may be attached to a surface of the reinforcing plate 610 via the second adhesive portion 640.

[0196] The first piezoelectric element 651 may include a first-1 piezoelectric element 651a and a first-2 piezoelectric element 651b spaced apart in the vertical direction, the y-axis direction, or the second direction. The first-1 piezoelectric element 651a and the first-2 piezoelectric element 651b may be spaced apart from each other in the second direction. For example, the first piezoelectric element 651 may be arranged in one direction based on the center of the prism portion 300.

[0197] The second piezoelectric element 652 may include a second-1 piezoelectric element 652a and a second-2 piezoelectric element 652b spaced apart in the left-right direction, the x-axis direction, or the first direction. Additionally, the second piezoelectric element 652 may be disposed in a direction different from one direction based on the center of the prism portion 300. This one direction and this other direction may be perpendicular to the center of the prism portion 300.

[0198] The first-first piezoelectric element 651a and the first-second piezoelectric element 651b can have the same shape and height. Furthermore, the second-first piezoelectric element 652a and the second-second piezoelectric element 652b can have the same shape and height. Additionally, the first-first piezoelectric element 651a, the first-second piezoelectric element 651b, the second-first piezoelectric element 652a, and the second-second piezoelectric element 652b can have the same height.

[0199] The first-1 piezoelectric element 651a can be electrically connected to the substrate 630 via the first solder joint S1. The first-2 piezoelectric element 651b can be electrically connected to the substrate 630 via the second solder joint S2. The second-1 piezoelectric element 652a can be electrically connected to the substrate 630 via the third solder joint S3. The second-2 piezoelectric element 652b can be electrically connected to the substrate 630 via the fourth solder joint S4.

[0200] Part or all of the piezoelectric element 650 may be disposed in a retainer hole formed in the retainer 400 while being connected to the retainer 400.

[0201] At least a portion of the first-1 piezoelectric element 651a can be inserted into the first-1 retainer hole 431a of the retainer 400 and can contact the first-1 protrusion 331a of the prism mover 300a.

[0202] At least a portion of the first-second piezoelectric element 651b can be inserted into the first-second retainer hole 431b of the retainer 400 to contact the first-second protrusion 331b of the prism mover 300a.

[0203] At least a portion of the second-first piezoelectric element 652a can be inserted into the second-first retainer hole 432a of the retainer 400 to contact the second-first protrusion 332a of the prism mover 300a.

[0204] At least a portion of the second-second piezoelectric element 652b can be inserted into the second-second retainer hole 432b of the retainer 400 to contact the second-second protrusion 332b of the prism mover 300a.

[0205] The method for manufacturing the drive unit 600 is as follows.

[0206] refer to Figures 16a to 16g First, a reinforcing plate 610 is prepared as a base component of the drive unit 600. The reinforcing plate 610 can be anodized aluminum, but is not limited to this. The reinforcing plate 610 can be used to support the piezoelectric element 650 so that the piezoelectric element 650 can be mounted on the substrate unit 630.

[0207] Next, in this embodiment, a first adhesive portion 620 can be formed on one surface of the reinforcing plate 610. In this case, the first adhesive portion 620 can be an adhesive tape, but is not limited thereto. Here, since a temperature of 100°C or higher is applied during the welding process of the piezoelectric element 650, the first adhesive portion 620 is preferably formed of a thermosetting tape. The first adhesive portion 620 may include a first opening that exposes the area of ​​the piezoelectric element 650 to be attached on one surface of the reinforcing plate 610. Specifically, the first adhesive portion 620 may include a first-1 opening 621 that exposes the area of ​​the first-1 piezoelectric element 651a to be mounted on one surface of the reinforcing plate 610. The first adhesive portion 620 may include a first-2 opening 622 that exposes the area of ​​the first-2 piezoelectric element 651b to be mounted on one surface of the reinforcing plate 610. The first adhesive portion 620 may include a first-3 opening 623 that exposes the area of ​​the second-1 piezoelectric element 652a to be mounted on one surface of the reinforcing plate 610. The first adhesive portion 620 may include the first-fourth opening 624, which exposes the area where the second-second piezoelectric element 652b is to be mounted on a surface of the reinforcing plate 610.

[0208] Next, in this embodiment, a process can be performed to attach the substrate portion 630 to a surface of the reinforcing plate 610 via the first adhesive portion 620.

[0209] The substrate portion 630 may also be divided into multiple regions. Specifically, the substrate portion 630 may include a first region 631, a second region 632, and a third region 633.

[0210] Additionally, multiple second openings can be formed in the first region 631 of the substrate portion 630. For example, the first region 631 of the substrate portion 630 may include a second-1 opening 631-1, which corresponds to the first-1 opening 621 and exposes the area where the first-1 piezoelectric element 651a is to be disposed on one surface of the reinforcing plate 610. The first region 631 of the substrate portion 630 may include a second-2 opening 631-2, which corresponds to the first-2 opening 622 and exposes the area where the first-2 piezoelectric element 651b is to be disposed on one surface of the reinforcing plate 610. The first region 631 of the substrate portion 630 may include a second-3 opening 631-3, which corresponds to the first-3 opening 623 and exposes the area where the second-1 piezoelectric element 652a is to be disposed on one surface of the reinforcing plate 610. The first region 631 of the substrate portion 630 may include a second-fourth opening 631-4, which corresponds to the first-fourth opening 624 and exposes the area where the second-second piezoelectric element 652b is to be installed on a surface of the reinforcing plate 610.

[0211] Next, according to the embodiment, in the area where the piezoelectric element 650 is to be installed, a second adhesive portion 640 may be formed on one surface of the reinforcing plate 610. For example, the second adhesive portion 640 may be formed on one surface of the reinforcing plate 610 exposed through the first opening of the first adhesive portion 620 and the second opening of the substrate portion 630.

[0212] Specifically, the second adhesive portion 640 may include a first adhesive member 641 formed on one surface of the reinforcing plate 610 exposed through the first-1 opening 621 and the second-1 opening 631-1. The second adhesive portion 640 may include a second adhesive member 642 formed on one surface of the reinforcing plate 610 exposed through the first-2 opening 622 and the second-2 opening 631-2. The second adhesive portion 640 may include a third adhesive member 643 formed on one surface of the reinforcing plate 610 exposed through the first-3 opening 623 and the second-3 opening 631-3. The second adhesive portion 640 may include a fourth adhesive member 644 formed on one surface of the reinforcing plate 610 exposed through the first-4 opening 624 and the second-4 opening 631-4.

[0213] Next, this embodiment can continue with the process of attaching the piezoelectric element 650 to the second adhesive portion 640. Thereafter, this embodiment can perform a welding process for electrically connecting the piezoelectric element 650 and the substrate portion 630 via welding portions S1, S2, S3, and S4.

[0214] Figure 17 This is an example diagram illustrating the operation of the drive unit of the first camera actuator according to an embodiment.

[0215] refer to Figure 17 The piezoelectric element 650 can be mechanically deformed by the applied power. Specifically, when a set power is applied, the piezoelectric element 650 can expand or contract. For example, the piezoelectric element 650 can expand toward one side surface of the prism portion 300, or contract in the opposite direction to the direction toward one side surface. The piezoelectric element 650 can expand or contract in the optical axis direction.

[0216] In this process, the piezoelectric element 650 can tilt the prism section 300. Specifically, the piezoelectric element 650 can control the tilt of the prism section 300 along a first axis or a second axis by applying power.

[0217] For example, prism 300b can be tilted along the first axis on prism mover 300a. Prism section 300 can be tilted in the left-right direction (refer to) about the first line L1 as the axis via piezoelectric element 650. Figure 17 The prism section 300 can rotate and move on the vertical direction (y-axis direction) via the second piezoelectric element 652.

[0218] Specifically, the second-first piezoelectric element 652a can expand by applied power. Additionally, the second-second piezoelectric element 652b can contract by applied power, or maintain a set shape when no power is applied. Therefore, the prism portion 300 can be deformed around the first line L1 in the rightward direction (see reference) by the mechanical deformation of the second-first piezoelectric element 652a. Figure 17 Tilting. Here, since no power is applied to the first-1 piezoelectric element 651a and the first-2 piezoelectric element 651b constituting the first piezoelectric element 651, no deformation occurs. Alternatively, the first-1 piezoelectric element 651a and the first-2 piezoelectric element 651b can be deformed by the applied power to provide a driving force for tilting the prism portion 300 in the rightward direction.

[0219] Furthermore, the second-2 piezoelectric element 652b can expand by applied power. Additionally, the second-1 piezoelectric element 652a can contract by applied power, or remain in a set shape when no power is applied. Therefore, the prism portion 300 can be deformed to the left around the first line L1 by the mechanical deformation of the piezoelectric element 650 (see reference). Figure 17 The prism portion 300 is tilted to the left. Here, since no power is applied to the first-1 piezoelectric element 651a and the first-2 piezoelectric element 651b constituting the first piezoelectric element 651, no deformation occurs. Alternatively, the first-1 piezoelectric element 651a and the first-2 piezoelectric element 651b can be deformed by applied power to provide a driving force for tilting the prism portion 300 to the left.

[0220] The prism section 300 can be tilted about the second axis. The prism section 300 can be tilted vertically around the second line L2, which serves as the axis, via the piezoelectric element 650 (see reference). Figure 17 The prism 410 can rotate and move in the left-right direction (x-axis direction) by at least one of the third piezoelectric element 533 and the fourth piezoelectric element 534.

[0221] In detail, the first piezoelectric element 651a can expand by applying power. Additionally, the first piezoelectric element 651b can contract by applying power, or maintain a set shape when no power is applied. Therefore, the prism portion 300 can be shaped in the downward direction around the second line L2 by the mechanical deformation of the piezoelectric element 650 (see reference). Figure 17 The prism portion 300 is tilted upwards. Here, since no power is applied to the second-1 piezoelectric element 652a and the second-2 piezoelectric element 652b, no deformation occurs. Alternatively, the second-1 piezoelectric element 652a and the second-2 piezoelectric element 652b can be deformed by applying a predetermined power to provide a driving force that tilts the prism portion 300 downwards.

[0222] In detail, the first-second piezoelectric element 651b can expand by applied power. Additionally, the first-first piezoelectric element 651a can contract by applied power, or maintain a set shape when no power is applied. Therefore, the prism portion 300 can be shaped around the second line L2 in the upward direction (see reference) by the mechanical deformation of the piezoelectric element 650. Figure 17 The prism portion 300 is tilted upwards. Here, since no power is applied to the second-1 piezoelectric element 652a and the second-2 piezoelectric element 652b, no deformation occurs. Alternatively, the second-1 piezoelectric element 652a and the second-2 piezoelectric element 652b can be deformed by applying a predetermined power to provide a driving force that tilts the prism portion 300 in the upward direction.

[0223] The camera module 10 according to the embodiment may include one or more camera actuators. For example, the camera module 10 may include the first camera actuator 1000 and the second camera actuator 2000 described above, as well as a cover 15 protecting the first camera actuator 1000 and the second camera actuator 2000.

[0224] The first camera actuator 1000 can be an optical image stabilizer (OIS) actuator. In this case, light incident on the camera module 10 from the outside can first strike the first camera actuator 1000. Alternatively, the path of the light incident on the first camera actuator 1000 can be changed so that it strikes the second camera actuator 2000. Subsequently, the light passing through the second camera actuator 2000 can strike the image sensor 2900.

[0225] The second camera actuator 2000 may be a zoom and / or autofocus actuator. The second camera actuator 2000 may include multiple lenses. The second camera actuator 2000 can perform zoom or autofocus functions by moving at least one lens in the optical axis direction according to a control signal from a controller. The second camera actuator 2000 will be described in more detail with reference to the accompanying drawings described later.

[0226] <Second Camera Actuator>

[0227] Figure 18 This is a connection view of the first camera actuator and the second camera actuator according to an embodiment. Figure 19 This is an exploded perspective view of the first camera actuator and the second camera actuator according to an embodiment. Figure 20 This is an exploded perspective view of the second camera actuator according to an embodiment, and Figure 21 This is a cross-sectional view of the second camera actuator according to an embodiment.

[0228] in addition, Figure 22This is a front view of the second camera actuator according to an embodiment, and Figure 23 This is a perspective view showing the third and fourth drive units disposed in the housing of the second camera actuator according to an embodiment.

[0229] in addition, Figure 24 and Figure 25 This is an exploded perspective view of the first and second drive units according to an exemplary embodiment, and Figure 26 This is a perspective view of some components in the second camera actuator according to an embodiment.

[0230] refer to Figures 18 to 26 According to the embodiment, the second camera actuator 2000 may include a second housing 2100, a first lens portion 2105, a first lens barrel 2200, a third drive portion 2300, a second lens barrel 2400, and a fourth drive portion 2500.

[0231] The second housing 2100 can form the exterior of the second camera actuator 2000. The second housing 2100 can have an open upper region and a lower region, and can have a hexahedral shape.

[0232] The second housing 2100 may include a receiving space. The first lens barrel 2200, the third drive unit 2300, the second lens barrel 2400, and the fourth drive unit 2500 may be accommodated in the receiving space of the second housing 2100.

[0233] The second housing 2100 may include a first sub-housing 2110 and a second sub-housing 2120.

[0234] The first sub-shell 2110 may include a first hole 2111. The first hole 2111 may be formed on one side of the first sub-shell 2110. The first hole 2111 may be a hollow hole passing through the exterior and interior of the first sub-shell 2110.

[0235] The first sub-shell 2110 may further include a second hole 2112 and a third hole 2113. The second hole 2112 and the third hole 2113 may be disposed on one side of the first sub-shell 2110. The second hole 2112 and the third hole 2113 may be hollow holes passing through the exterior and interior of the first sub-shell 2110. The second hole 2112 and the third hole 2113 may be spaced apart from the first hole 2111. Specifically, the first hole 2111 may be disposed between the second hole 2112 and the third hole 2113. The first hole 2111 may be disposed at equal intervals from the second hole 2112 and the third hole 2113.

[0236] The second hole 2112 may include a plurality of protrusions extending from the inner peripheral surface of the second hole 2112 toward the center of the second hole 2112. For example, the plurality of protrusions may include a first protrusion 2112a disposed at the upper end of the second hole 2112 and a second protrusion 2112b disposed at the lower end of the second hole 2112 in the optical axis direction.

[0237] In detail, the first protrusion 2112a may include a plurality of first sub-protrusions (not shown) spaced apart from each other. The plurality of first sub-protrusions may be arranged at equal intervals from the center of the second hole 2112 along a concentric circle. Furthermore, the second protrusion 2112b may be spaced apart from the first protrusion 2112a in the optical axis direction. The second protrusion 2112b may be located below the first protrusion 2112a. The second protrusion 2112b may include a plurality of second sub-protrusions (not shown) spaced apart from each other. The plurality of second sub-protrusions may be arranged at equal intervals from the center of the second hole 2112 along a concentric circle. The first protrusion 2112a and the second protrusion 2112b may provide a space in which a portion of the third drive section 2300 (e.g., the first buffer member 2321), which will be described later, is disposed.

[0238] The third hole 2113 may include a plurality of protrusions extending from the inner peripheral surface of the third hole 2113 toward the center of the third hole 2113. The plurality of protrusions may include a third protrusion 2113a disposed at the upper end of the third hole 2113 relative to the optical axis and a fourth protrusion 2113b disposed at the lower end of the second hole 2112.

[0239] The third protrusion 2113a may include a plurality of third sub-protrusions (not shown) spaced apart from each other. The plurality of third sub-protrusions may be arranged at equal intervals along the circumference of a concentric circle and the center of the third hole 2113. Furthermore, the fourth protrusion 1134 may be spaced apart from the third protrusion 2113a in the optical axis direction. The fourth protrusion 2113b may include a plurality of fourth sub-protrusions (not shown) spaced apart from each other. The plurality of fourth sub-protrusions may be arranged at equal intervals along the circumference of a concentric circle and the center of the third hole 2113. The third protrusion 2113a and the fourth protrusion 2113b may provide a space in which a portion of the fourth drive member 2500 (e.g., the third buffer member 2521), which will be described later, is disposed.

[0240] The second sub-housing 2120 may be disposed below the first sub-housing 2110. Specifically, the second sub-housing 2120 may be disposed below the first sub-housing 2110 in a third direction (z-axis, optical axis direction). The second sub-housing 2120 may be disposed closer to the image sensor 2900, which will be described later, than the first sub-housing 2110. The first lens barrel 2200, the third drive unit 2300, the second lens barrel 2400, and the fourth drive unit 2500 may be disposed within the second sub-housing 2120.

[0241] The second sub-housing 2120 can be coupled to the first sub-housing 2110. For example, the first sub-housing 2110 and the second sub-housing 2120 can be coupled by a separate fastening member (not shown), such as a screw. Alternatively, the first sub-housing 2110 and the second sub-housing 2120 can be coupled to each other by a physical connection formed therein by a connecting claw and a connecting groove, respectively.

[0242] A first lens portion 2105 is disposed in the second housing 2100 and may include at least one lens. For example, the first lens portion 2105 may be disposed in the first sub-housing 2110. Specifically, the first lens portion 2105 may be disposed in the first hole 2111 of the first sub-housing 2110. For example, the first lens portion 2105 may be connected to the first sub-housing 2110 by means of a thread formed on the inner circumferential surface of the first hole 2111.

[0243] The first lens barrel 2200 can be disposed within the second housing 2100. The first lens barrel 2200 can also be disposed within the second sub-housing 2120. The first lens barrel 2200 can be disposed below the first lens portion 2105. For example, the first lens barrel 2200 can be disposed below the first lens portion 2105 in the optical axis direction and can be closer to the image sensor 2900 than the first lens portion 2105. The first lens barrel 2200 can be connected to the third drive unit 2300. The first lens barrel 2200 can be moved within the second housing 2100 via the third drive unit 2300. Specifically, the first lens barrel 2200 can be moved in the optical axis direction via the third drive unit 2300.

[0244] The first lens barrel 2200 may include a first barrel portion 2210, a second lens portion 2205, a first guide portion 2220, and a first elastic portion 2230.

[0245] The first lens barrel portion 2210 can be disposed in the region overlapping with the optical axis, and can have an open shape on one surface and another surface. For example, the first lens barrel portion 2210 can have a cylindrical shape with one surface and another surface open.

[0246] The first lens barrel portion 2210 may include a first through hole 2211. The first through hole 2211 may be a through hole that passes through one surface and another surface of the first lens barrel portion 2210. Here, one surface of the first lens barrel portion 2210 may be the surface facing the first lens portion 2105, and the other surface may be the surface opposite to the first surface and facing the image sensor 2900.

[0247] The second lens portion 2205 may be disposed on the first lens barrel portion 2210. Specifically, the second lens portion 2205 may be disposed in the first through hole 2211. For example, a thread may be formed on the inner circumferential surface of the first through hole 2211, and the second lens portion 2205 may be threadedly connected to the first lens barrel portion 2210.

[0248] The second lens section 2205 may include at least one lens. The second lens section 2205 can perform a zoom function. The second lens section 2205 can move in the optical axis direction. Specifically, the second lens section 2205 can move relative to the first lens section 2105 in the optical axis direction.

[0249] The first guide portion 2220 may extend outward from the first lens barrel portion 2210. For example, the first guide portion 2220 may extend from the first lens barrel portion 2210 in a direction perpendicular to the optical axis (e.g., in the first direction (x-axis direction)).

[0250] The first guide portion 2220 may include a first upper surface 2221, a first side surface 2222, and a first lower surface 2223.

[0251] The first upper surface 2221 may face the inner upper surface of the second housing 2100, which will be described later. The first upper surface 2221 may also face the inner upper surface of the second housing 2100 in a second direction (y-axis direction). The first upper surface 2221 may include a plurality of sub-upper surfaces. Specifically, the first upper surface 2221 may include a first sub-upper surface 2221a and a second sub-upper surface 2221b disposed lower than the first sub-upper surface 2221a in the second direction (y-axis direction). That is, the second sub-upper surface 2221b may be disposed closer to the first lower surface 2223 than the first sub-upper surface 2221a. At least one first fastening protrusion (not shown) may be provided on the second sub-upper surface 2221b. The first fastening protrusion may have a shape that protrudes upward on the second sub-upper surface 2221b. The first fastening protrusion may be inserted into a first retaining groove (not shown) formed in the first elastic portion 2230, which will be described later.

[0252] Additionally, the first upper surface 2221 may include a first stepped surface 2225 disposed between the first sub-upper surface 2221a and the second sub-upper surface 2221b. The first stepped surface 2225 may be connected to the ends of the first sub-upper surface 2221a and the second sub-upper surface 2221b. The first stepped surface 2225 may be defined as a first stepped portion 2225. That is, the first upper surface 2221 may include the first sub-upper surface 2221a, the second sub-upper surface 2221b, and the first stepped portion 2225, and may have a stepped structure.

[0253] A first lower surface 2223 may face the inner lower surface of the second housing 2100, which will be described later. A first groove 2223h1 may be provided on the first lower surface 2223. The first groove 2223h1 may have a concave shape in the direction from the first lower surface 2223 to the first upper surface 2221. A first magnetic scaler 2610, which will be described later, may be provided in the first groove 2223h1.

[0254] Additionally, a second groove 2223h2 may be provided on the first lower surface 2223. The second groove 2223h2 may be spaced apart from the first groove 2223h1. The second groove 2223h2 may be provided in the edge region of the first lower surface 2223. The second groove 2223h2 may provide an area for mounting a portion of the first elastic portion 2230, which will be described later. Specifically, the second groove 2223h2 may provide an area for mounting and securing the first elastic portion 2230.

[0255] A first side surface 2222 may be disposed between a first upper surface 2221 and a first lower surface 2223. More specifically, the first side surface 2222 may be a surface connecting the first upper surface 2221 and the first lower surface 2223. Even more specifically, the first side surface 2222 may be a surface connecting a second sub-upper surface 2221b and the first lower surface 2223. The first side surface 2222 may face the second inner surface of the second sub-housing 2120, which will be described later.

[0256] The first recess 2222h may be provided on the first side surface 2222. The first recess 2222h may have a concave shape in the direction from the first side surface 2222 to the first lens barrel portion 2210. Moreover, the first recess 2222h may have a groove shape extending in the optical axis direction (z-axis direction). When viewed from the front, the first recess 2222h may be V-shaped.

[0257] The first guide portion 2220 may include a first insertion hole 2220h1. The first insertion hole 2220h1 may be a hole passing through one surface and another surface of the first guide portion 2220. Here, one surface of the first guide portion 2220 may be the surface facing the first lens portion 2105, and the other surface may be the surface opposite to the first surface and facing the image sensor 2900.

[0258] The first pin 2250 may be disposed in the first insertion hole 2220h1. The first pin 2250 may be disposed through the first insertion hole 2220h1. The first pin 2250 has a shape extending in the optical axis direction (z-axis direction) and may have a longer optical axis length than the first lens barrel 2200. The first pin 2250 may be connected to at least one of the first sub-housing 2110 and the second sub-housing 2120. The first lens barrel 2200 may allow the first pin 2250 to move as a moving axis in the optical axis direction. Thus, the second lens portion 2205 disposed in the first lens barrel 2200 may perform a zoom function and / or an autofocus function.

[0259] The first elastic portion 2230 may be disposed on the first guide portion 2220. For example, the first elastic portion 2230 may be disposed on the first upper surface 2221, the first lower surface 2223, and the first side surface 2222 of the first guide portion 2220. The first elastic portion 2230 may be connected to the first guide portion 2220.

[0260] The first elastic part 2230 may include a first elastic member 2231 and a second elastic member 2232.

[0261] The first elastic member 2231 can be connected to the first guide portion 2220. The first elastic member 2231 can be disposed at a predetermined position on the first side surface 2222.

[0262] The first elastic member 2231 may have a shape corresponding to the first side surface 2222. For example, the first elastic member 2231 may include a first region 2231a, a second region 2231b, and a third region 2231c.

[0263] The first region 2231a and the second region 2231b can be disposed on the first side surface 2222 of the first guide portion 2220 and can be spaced apart from each other. The first region 2231a and the second region 2231b can be disposed on the region of the first side surface 2222 where the first recess 2222h is not disposed.

[0264] The third region 2231c can be disposed between the first region 2231a and the second region 2231b to connect the two regions 2231a and 2231b. The third region 2231c can be disposed in the region corresponding to the first recess 2222h. The third region 2231c can have a V-shape corresponding to the first recess 2222h.

[0265] The second elastic member 2232 may be disposed on the first guide portion 2220. The second elastic member 2232 may be connected to the first guide portion 2220.

[0266] The second elastic member 2232 may include a fourth region 2232a, a fifth region 2232b, and a sixth region 2232c.

[0267] The fourth region 2232a may be disposed on the first upper surface 2221 of the first guide portion 2220. More specifically, the fourth region 2232a may be disposed on the second sub-upper surface 2221b of the first guide portion 2220. The fourth region may include a first fixing groove (not shown). The first fixing groove may be disposed in the region corresponding to the first fastening protrusion and may have a shape corresponding to the first fastening protrusion.

[0268] The fifth region 2232b may be connected to the fourth region 2232a. For example, the fifth region 2232b may be bent at one end of the fourth region 2232a and disposed on the first side surface 2222 of the first guide portion 2220. The fifth region 2232b may be disposed on the first elastic member 2231. The fifth region 2232b may be parallel to the first region 2231a and the second region 2231b. The fifth region 2232b may be configured to cover the first elastic member 2231.

[0269] The sixth region 2232c can be connected to the fifth region 2232b. For example, the sixth region 2232c can be bent at one end of the fifth region and disposed on the first lower surface 2223 of the first guide 2220. A portion of the sixth region 2232c can be inserted into a second groove 2232 disposed on the first lower surface 2223.

[0270] That is, when the first fixing groove formed in the fourth region 2232a engages with the first fastening protrusion, the second elastic member 2232 can be physically connected to the first guide portion 2220, and the sixth region 2232c is inserted into the second groove 2232. Therefore, the first elastic portion 2230 can remain firmly connected to the first guide portion 2220.

[0271] Additionally, the first lens barrel 2200 may also include a first guide groove 2210h1. The first guide groove 2210h1 may be disposed in a region extending outward from the first lens barrel portion 2210. The first guide groove 2210h1 may be disposed in a region corresponding to the second pin 2450, which will be described later. The first guide groove 2210h1 provides space for the second pin 2450 to be inserted therein. The first lens barrel 2200 can move in the optical axis direction via the first pin 2250 and the second pin 2450. In this case, the first guide groove 2210h1 may have an open shape on one side. For example, the first guide groove 2210h1 may have an open shape on the side facing the first inner surface of the second housing 2100. Therefore, friction and vibration generated when the first lens barrel 2200 moves via the third drive portion 2300 can be minimized.

[0272] The second camera actuator 2000 may include a third drive unit 2300. The third drive unit 2300 may be disposed in the second housing 2100. The third drive unit 2300 may be connected to the first lens barrel 2200. The third drive unit 2300 may move the first lens barrel 2200 in the optical axis direction (z-axis direction).

[0273] The third drive unit 2300 may include a first piezoelectric element 2310, a first extension rod 2320, a first buffer member 2321, and a second buffer member 2322.

[0274] The first piezoelectric element 2310 may include a piezoelectric device. For example, the first piezoelectric element 2310 may include a material that undergoes mechanical deformation by applied power. The first piezoelectric element 2310 may contract or expand by an applied voltage and may cause mechanical deformation in a predetermined direction. For example, the first piezoelectric element 2310 may generate vibration while undergoing mechanical deformation in the optical axis direction (z-axis direction) by applied power.

[0275] The first piezoelectric element 2310 may include a first disc portion 2311 and a first protrusion portion 2512. The first disc portion 2311 may have a plate shape and may be disposed on the second hole 2112. For example, the first disc portion 2311 may be disposed on the first protrusion portion 2112a of the second hole 2112. More specifically, the first disc portion 2311 may be disposed on a plurality of first sub-protrusions. The first protrusion 2112a may support the first disc portion 2311.

[0276] The first protrusion 2512 may be disposed below the first disk portion 2311. Specifically, the first protrusion 2512 may be disposed below the first disk portion 2311 in a third direction (z-axis direction) and may be connected to the first disk portion 2311. A portion of the first protrusion 2512 may be disposed in the second hole 2112. The first protrusion 2512 may have a shape protruding toward the image sensor 2900. The width of the first protrusion 2512 (in the x-axis and y-axis directions) may change toward the optical axis direction. For example, the width of the first protrusion 2512 may decrease as it approaches the image sensor 2900.

[0277] The first extension rod 2320 can extend in the direction of the optical axis. The first extension rod 2320 can be arranged parallel to the optical axis and can be connected to the first piezoelectric element 2310. For example, the upper end of the first extension rod 2320 can be connected to the first protrusion 2512. In addition, the lower end of the first extension rod 2320 can be inserted into the lower end of the second housing 2100, for example, a fourth hole (not shown) formed at the lower end of the second sub-housing 2120.

[0278] Additionally, a region of the first extension rod 2320 can be connected to the first lens barrel 2200. For example, the first extension rod 2320 can be connected to the first lens barrel 2200 via the first elastic portion 2230. More specifically, the first extension rod 2320 can be disposed between the first elastic member 2231 and the second elastic member 2232. More specifically, the first extension rod 2320 can be disposed between the third region 2231c of the first elastic member 2231 and the fifth region 2232b of the second elastic member 2232. The first extension rod 2320 can be fixed by the elastic force of the first elastic member 2231 and the second elastic member 2232.

[0279] The first extension rod 2320 can transmit the vibration generated by the first piezoelectric element 2310 to the first lens barrel 2200. The first lens barrel 2200 can move up or down (z-axis direction, optical axis direction) according to the vibration direction of the first extension rod 2320. As a result, the second lens section 2205 in the first lens barrel 2200 can move to perform a zoom function of magnification or reduction.

[0280] The first buffer member 2321 may be disposed on the first extension rod 2320. The first buffer member 2321 may be disposed in the upper region of the first extension rod 2320. The first buffer member 2321 may be disposed in the second hole 2112 of the second housing 2100. For example, the first buffer member 2321 may be disposed between the first protrusion 2112a and the second protrusion 2112b of the second hole 2112. The first buffer member 2321 may be fixed to the position defined by the first protrusion 2112a and the second protrusion 2112b. Additionally, the first buffer member 2321 may include a through hole into which the first extension rod 2320 is inserted.

[0281] The second buffer member 2322 may be disposed on the first extension rod 2320. The second buffer member 2322 may be disposed in the lower region of the first extension rod 2320. The second buffer member 2322 may be spaced apart from the first buffer member 2321 in the optical axis direction. The second buffer member 2322 may be disposed in a fourth hole (not shown) of the second housing 2100. The second buffer member 2322 may be configured to be inserted into the fourth hole. The second buffer member 2322 may include a through hole into which the first extension rod 2320 is inserted.

[0282] The first buffer member 2321 and the second buffer member 2322 can prevent noise caused by the vibration of the first extension rod 2320. In addition, the first buffer member 2321 and the second buffer member 2322 can prevent the first extension rod 2320 from being deformed or damaged due to external impact.

[0283] The second lens barrel 2400 can be disposed within the second housing 2100. The second lens barrel 2400 can also be disposed within the second sub-housing 2120. The second lens barrel 2400 can be disposed below the first lens barrel 2200. For example, the second lens barrel 2400 can be disposed below the first lens barrel 2200 in the optical axis direction and can be closer to the image sensor 2900 than the first lens barrel 2200. The second lens barrel 2400 can be connected to the fourth drive unit 2500. The second lens barrel 2400 can be moved within the second housing 2100 via the fourth drive unit 2500. Specifically, the second lens barrel 2400 can be moved in the optical axis direction via the fourth drive unit 2500.

[0284] The second lens barrel 2400 may include a second lens barrel portion 2410, a third lens portion 2405, a second guide portion 2420, and a second elastic portion 2430.

[0285] The second lens barrel portion 2410 is disposed in the region overlapping with the optical axis and may have an open shape on one side and the other side. For example, the second lens barrel portion 2410 may have a cylindrical shape, with one surface and the other surface being open.

[0286] The second lens barrel portion 2410 may include a second through hole 2411. The second through hole 2411 may be a through hole passing through one surface and another surface of the second lens barrel portion 2410. Here, one surface of the second lens barrel portion 2410 may be the surface facing the first lens barrel 2200, and the other surface may be the surface opposite to the first surface and facing the image sensor 2900.

[0287] The third lens portion 2405 may be disposed on the second lens barrel portion 2410. Specifically, the third lens portion 2405 may be disposed in the second through hole 2411. For example, a thread may be formed on the inner circumferential surface of the second through hole 2411, and the third lens portion 2405 may be threadedly connected to the second lens barrel portion 2410.

[0288] The third lens section 2405 may include at least one lens. The third lens section 2405 can perform an autofocus function. The third lens section 2405 can move in the optical axis direction. Specifically, the third lens section 2405 can move relative to the first lens section 2105 in the optical axis direction. The third lens section 2405 can move separately from the second lens section 2205. Furthermore, the distance that the third lens section 2405 can move in the optical axis direction may be the same as or different from the distance that the second lens section 2205 can move in the optical axis direction.

[0289] The second guide portion 2420 can extend outward from the second lens barrel portion 2410. For example, the second guide portion 2420 can extend from the second lens barrel portion 2410 in a direction perpendicular to the optical axis (e.g., in the first direction (x-axis direction)). In this case, the second guide portion 2420 can extend in a direction opposite to the first guide portion 2220. For example, the first guide portion 2220 can extend from the first lens barrel portion 2210 in the +x-axis direction, and the second guide portion 2420 can extend from the second lens barrel portion 2410 in the -x-axis direction.

[0290] The second guide portion 2420 may include a second lower surface 2421, a second side surface 2422, and a second upper surface 2423.

[0291] The second upper surface 2423 may face the inner upper surface 122 of the second housing 2100. The second upper surface 2423 may face the inner upper surface of the second housing 2100 in a second direction (y-axis direction). A third groove 2423h1 may be provided on the second upper surface 2423. The third groove 2423h1 may have a concave shape in the direction from the second upper surface 2423 to the second lower surface 2421. The second magnetic calibrator 2620, described later, may be provided in the third groove 2423h1.

[0292] Additionally, a fourth groove 2423h2 may be provided on the second upper surface 2423. The fourth groove 2423h2 may be spaced apart from the third groove 2423h1. The fourth groove 2423h2 may be provided in the edge region of the second upper surface 2423. The fourth groove 2423h2 may provide an area in which a portion of the second elastic portion 2430, described later, is disposed. Specifically, the fourth groove 2423h2 may provide an area in which the second elastic portion 2430 is mounted and secured.

[0293] The second lower surface 2421 may face the inner lower surface of the second housing 2100. The second lower surface 2421 may face the inner lower surface of the second housing 2100 in a second direction (y-axis direction). The second lower surface 2421 may include a plurality of sub-lower surfaces. Specifically, the second lower surface 2421 may include a first sub-lower surface 2421a and a second sub-lower surface 2421b disposed on the first sub-lower surface 2421a in the second direction (y-axis direction). That is, the second sub-lower surface 2421b may be disposed closer to the second upper surface 2423 than the first sub-lower surface 2421a. At least one second fastening protrusion (not shown) may be disposed on the second sub-lower surface 2421b. The second fastening protrusion may have a shape that protrudes downward from the second sub-lower surface 2421b. The second fastening protrusion may be inserted into a second fixing groove (not shown) formed in the second elastic portion 2430, which will be described later.

[0294] Additionally, the second lower surface 2421 may include a second stepped surface 2425 disposed between the first sub-lower surface 2421a and the second sub-lower surface 2421b. The second stepped surface 2425 may be connected to the ends of the first sub-lower surface 2421a and the second sub-lower surface 2421b. The second stepped surface 2425 may be defined as a second stepped portion 2425. That is, the second lower surface 2421 may include the first sub-lower surface 2421a, the second sub-lower surface 2421b, and the second stepped portion 2425, and may have a stepped structure.

[0295] The second side surface 2422 may be disposed between the second upper surface 2423 and the second lower surface 2421. More specifically, the second side surface 2422 may be a surface connecting the second upper surface 2423 and the second lower surface 2421. More specifically, the second side surface 2422 may be a surface connecting the second lower sub-surface 2421b and the second upper surface 2423. The second side surface 2422 may face the first inner surface of the second sub-housing 2120, which will be described later.

[0296] The second recess 2422h can be provided on the second side surface 2422. The second recess 2422h can have a concave shape extending from the second side surface 2422 toward the second lens barrel portion 2410. Moreover, the second recess 2422h can have a groove shape extending in the optical axis direction (z-axis direction). When viewed from the front, the second recess 2422h can be V-shaped.

[0297] The second guide portion 2420 may include a second insertion hole 2420h1. The second insertion hole 2420h1 may be a hole passing through one surface and another surface of the second guide portion 2420. Here, one surface of the second guide portion 2420 may be the surface facing the first lens barrel 2200, and the other surface may be the surface opposite to the first surface and facing the image sensor 2900.

[0298] The second pin 2450 can be disposed in the second insertion hole 2420h1. The second pin 2450 can be disposed through the second insertion hole 2420h1. The second pin 2450 can have a shape extending in the optical axis direction (z-axis direction). The second pin 2450 can be spaced apart from the first pin 2250 and can be parallel to the first pin 2250. The length of the second pin 2450 in the optical axis direction can be longer than the length of the second lens barrel 2400 in the optical axis direction. The second pin 2450 can be connected to at least one of the first sub-housing 2110 and the second sub-housing 2120. The second lens barrel 2400 can move the second pin 2450 as a moving axis in the optical axis direction. Thus, the third lens portion 2405 disposed in the second lens barrel 2400 can perform a zoom function and / or an autofocus function.

[0299] The second elastic portion 2430 may be disposed on the second guide portion 2420. For example, the second elastic portion 2430 may be disposed on the second upper surface 2423, the second lower surface 2421, and the second side surface 2422 of the second guide portion 2420. The second elastic portion 2430 may be connected to the second guide portion 2420.

[0300] The second elastic part 2430 may include a third elastic member 2431 and a fourth elastic member 2432.

[0301] The third elastic member 2431 can be connected to the second guide portion 2420. The third elastic member 2431 can be provided at a set position on the second side surface 2422.

[0302] The third elastic member 2431 may have a shape corresponding to the second side surface 2422. For example, the third elastic member 2431 may include a seventh region 2431a, an eighth region 2431b, and a ninth region 2431c.

[0303] The seventh region 2431a and the eighth region 2431b may be disposed on the second side surface 2422 of the second guide portion 2420 and may be spaced apart from each other. The seventh region 2431a and the eighth region 2431b may be disposed on the region of the second side surface 2422 where the second recess 2422h is not disposed.

[0304] A ninth region 2431c may be disposed between the first region 2231a and the second region 2231b to connect the two regions 2431a and 2431b. The ninth region 2431c may be disposed in the region corresponding to the second recess 2422h. The ninth region 2431c may have a V-shape corresponding to the second recess 2422h.

[0305] The fourth elastic member 2432 may be disposed on the second guide portion 2420. The fourth elastic member 2432 may be connected to the second guide portion 2420.

[0306] The fourth elastic member 2432 may include a tenth region 2432a, an eleventh region 2432b, and a twelfth region 2432c.

[0307] The tenth region 2432a may be disposed on the second lower surface 2421 of the second guide portion 2420. More specifically, the tenth region 2432a may be disposed on the second sub-lower surface 2421b of the second guide portion 2420. The tenth region may include a second fixing groove (not shown). The second fixing groove may be disposed in the region corresponding to the second fastening protrusion and may have a shape corresponding to the second fastening protrusion.

[0308] Eleventh region 2432b may be connected to tenth region 2432a. For example, eleventh region 2432b may be bent at one end of tenth region 2432a and disposed on the second side surface 2422 of second guide 2420. Eleventh region 2432b may be disposed on third elastic member 2431. Eleventh region 2432b may be parallel to seventh region 2431a and eighth region 2431b. Eleventh region 2432b may be configured to cover third elastic member 2431.

[0309] The twelfth region 2432c can be connected to the eleventh region 2432b. For example, the twelfth region 2432c can be bent at one end of the eleventh region and disposed on the second upper surface 2423 of the second guide 2420. A portion of the twelfth region 2432c can be inserted into the second groove 2232 disposed on the second upper surface 2423.

[0310] That is, when the twelfth region 432c is inserted into the fourth groove 2423h2, and the second fixing groove formed in the seventh region 2431a is connected to the second fastening protrusion, the fourth elastic member 2432 can be physically connected to the second guide portion 2420. Therefore, the second elastic portion 2430 can remain firmly connected to the second guide portion 2420.

[0311] Additionally, the second lens barrel 2400 may also include a second guide groove 2410h1. The second guide groove 2410h1 may be disposed in a region extending outward from the second lens barrel portion 2410. The second guide groove 2410h1 may be disposed in a region corresponding to the first pin 2250. The second guide groove 2410h1 provides space for the first pin 2250 to be inserted therein. The second lens barrel 2400 can move in the optical axis direction via the first pin 2250 and the second pin 2450. In this case, the second guide groove 2410h1 may have an open shape on one side. For example, the second guide groove 2410h1 may have an open side facing the second inner surface of the second housing 2100. Therefore, friction and vibration generated when the second lens barrel 2400 moves via the fourth drive portion 2500 can be minimized.

[0312] The second camera actuator 2000 may include a fourth drive unit 2500. The fourth drive unit 2500 may be disposed in the second housing 2100. The fourth drive unit 2500 may be coupled to the second lens barrel 2400. The fourth drive unit 2500 may move the second lens barrel 2400 in the optical axis direction (z-axis direction).

[0313] The fourth drive unit 2500 may include a second piezoelectric element 2510, a second extension rod 2520, a third buffer member 2521 and a fourth buffer member 2522.

[0314] The second piezoelectric element 2510 may include a piezoelectric device. For example, the second piezoelectric element 2510 may include a material that undergoes mechanical deformation by applied power. The second piezoelectric element 2510 may contract or expand by applied power and may cause mechanical deformation in a predetermined direction. For example, the second piezoelectric element 2510 may generate vibration while undergoing mechanical deformation in the optical axis direction (z-axis direction) by applied power.

[0315] The second piezoelectric element 2510 may include a second disc portion 2511 and a second protrusion portion 2512. The second disc portion 2511 has a plate shape and may be disposed on a third hole 2113. For example, the second disc portion 2511 may be disposed on a third protrusion 2113a of the third hole 2113. More specifically, the second disc portion 2511 may be disposed on a plurality of third sub-protrusions. The third protrusion 2113a may support the second disc portion 2511.

[0316] The second protrusion 2512 can be disposed below the second disk portion 2511. Specifically, the second protrusion 2512 can be disposed below the second disk portion 2511 in a third direction (z-axis direction) and can be connected to the second disk portion 2511. A portion of the first protrusion 2512 can be disposed in the third hole 2113. The second protrusion 2512 can have a shape protruding towards the image sensor 2900. The width of the second protrusion 2512 (in the x-axis and y-axis directions) can change towards the optical axis direction. For example, the width of the second protrusion 2512 can decrease as it approaches the image sensor 2900.

[0317] The second extension rod 2520 can extend in the direction of the optical axis. The second extension rod 2520 can be arranged parallel to the optical axis and can be connected to the second piezoelectric element 2510. For example, the upper end of the second extension rod 2520 can be connected to the second protrusion 2512. In addition, the lower end of the second extension rod 2520 can be inserted into the lower end of the second housing 2100, for example, a fifth hole (not shown) formed at the lower end of the second sub-housing 2120.

[0318] Additionally, a region of the second extension rod 2520 can be connected to the second lens barrel 2400. For example, the second extension rod 2520 can be connected to the second lens barrel 2400 via the second elastic portion 2430. More specifically, the second extension rod 2520 can be disposed between the third elastic member 2431 and the fourth elastic member 2432. More specifically, the second extension rod 2520 can be disposed between the ninth region 2431c of the third elastic member 2431 and the eleventh region 2432b of the fourth elastic member 2432. The second extension rod 2520 can be fixed by the elastic force of the third elastic member 2431 and the fourth elastic member 2432.

[0319] The second extension rod 2520 can transmit the vibration generated by the second piezoelectric element 2510 to the second lens barrel 2400. The second lens barrel 2400 can move up or down (z-axis direction, optical axis direction) according to the vibration direction of the second extension rod 2520. As a result, the third lens section 2405 in the second lens barrel 2400 can move to perform a zoom function of magnification or reduction.

[0320] The third buffer member 2521 may be disposed on the second extension rod 2520. The third buffer member 2521 may be disposed in the upper region of the second extension rod 2520. The third buffer member 2521 may be disposed in the third hole 2113 of the second housing 2100. For example, the third buffer member 2521 may be disposed between the third protrusion 2113a and the fourth protrusion 2113b of the third hole 2113. The third buffer member 2521 may be fixed to the position defined by the third protrusion 2113a and the fourth protrusion 2113b. Alternatively, the third buffer member 2521 may include a through hole into which the second extension rod 2520 is inserted.

[0321] A fourth buffer member 2522 may be disposed on the second extension rod 2520. The fourth buffer member 2522 may be disposed in the lower region of the second extension rod 2520. The fourth buffer member 2522 may be spaced apart from the third buffer member 2521 in the optical axis direction. The fourth buffer member 2522 may be disposed in a fifth hole (not shown) of the second housing 2100. The fourth buffer member 2522 may be configured to be inserted into the fifth hole. The second buffer member 2322 may include a through hole into which the second extension rod 2520 is inserted.

[0322] The third buffer member 2521 and the fourth buffer member 2522 can prevent noise caused by the vibration of the second extension rod 2520. In addition, the third buffer member 2521 and the fourth buffer member 2522 can prevent the second extension rod 2520 from being deformed or damaged due to external impact.

[0323] The second camera actuator 2000 may include a first magnetic calibrator 2610, a first sensing unit (not shown), a second magnetic calibrator 2620, and a second sensing unit (not shown).

[0324] The first magnetic calibrator 2610 can be disposed on the first lens barrel 2200. For example, the first magnetic calibrator 2610 can be disposed on the first lower surface 2223. More specifically, the first magnetic calibrator 2610 can be disposed in the first groove 2223h1 of the first lens barrel 2200. The first magnetic calibrator 2610 can move together with the first lens barrel 2200 along the optical axis.

[0325] The first magnetic scaler 2610 may include multiple magnets. For example, the N pole and S pole of the first magnetic scaler 2610 may be alternately arranged in the optical axis direction.

[0326] The first sensing unit can be disposed adjacent to the first magnetic calibrator 2610. For example, the first sensing unit can be disposed facing the first magnetic calibrator 2610 in a first direction (x-axis direction) or a second direction (y-axis direction). The first sensing unit can detect the position of the first magnetic calibrator 2610. Thus, the first sensing unit can detect the position and movement of the first lens barrel 2200 that moves together with the first magnetic calibrator 2610.

[0327] The second magnetic calibrator 2620 can be disposed on the second lens barrel 2400. For example, the second magnetic calibrator 2620 can be disposed on the second upper surface 2423. More specifically, the second magnetic calibrator 2620 can be disposed in the third groove 2423h1 of the second lens barrel 2400. The second magnetic calibrator 2620 can move together with the second lens barrel 2400 along the optical axis.

[0328] The second magnetic calibrator 2620 may include multiple magnets. For example, the N pole and S pole of the second magnetic calibrator 2620 may be alternately arranged in the optical axis direction.

[0329] Furthermore, the second sensing unit can be disposed adjacent to the second magnetic calibrator 2620. For example, the second sensing unit can be disposed facing the second magnetic calibrator 2620 in a first direction (x-axis direction) or a second direction (y-axis direction). The second sensing unit can detect the position of the second magnetic calibrator 2620. Thus, the second sensing unit can detect the position and movement of the second lens barrel 2400 that moves together with the second magnetic calibrator 2620.

[0330] Additionally, although not shown in the figures, the second camera actuator 2000 according to the embodiment may also include a gyroscope sensor (not shown). The gyroscope sensor may be disposed in the second housing 2100. The gyroscope sensor can be used by the camera actuator to detect the user's movement.

[0331] The second camera actuator 2000 according to an embodiment may include a second substrate 2800. The second substrate 2800 may be disposed on the second housing 2100. The second substrate 2800 may be configured to surround a portion of the second housing 2100. For example, the second substrate 2800 may be configured to surround a portion of the outer side of the second sub-housing 2120. The second substrate 2800 may provide power or current to components disposed in the second housing 2100. That is, the second substrate 2800 may be a circuit board, and may include a circuit board having wiring patterns capable of electrical connection, such as a rigid printed circuit board (rigid PCB), a flexible printed circuit board (flexible PCB), and a rigid-flexible printed circuit board (rigid-flexible PCB). The second substrate 2800 may be electrically connected to the aforementioned first substrate 310.

[0332] The second substrate 2800 may include a first end 2810. The first end 2810 may be disposed on the first piezoelectric element 2310 of the third drive unit 2300. For example, the first end 2810 may be disposed on the first disk portion 2311 of the first piezoelectric element 2310. More specifically, the first end 2810 may be disposed on one surface of the first disk portion 2311. Furthermore, the first end 2810 may be disposed on the second piezoelectric element 2510 of the fourth drive unit 2500. For example, a second end 2820 may be disposed on the second disk portion 2511 of the second piezoelectric element 2510. More specifically, the first end 2810 may be disposed on one surface of the second disk portion 2511.

[0333] The second substrate 2800 may include a second end 2820. The second end 2820 may be spaced apart from the first end 2810. Moreover, the second end 2820 may be disposed in a region in the optical axis direction that does not overlap with the first end 2810.

[0334] The second end 2820 can be provided on the first piezoelectric element 2310 of the third drive unit 2300. For example, the second end 2820 can be provided on the first disc portion 2311 of the first piezoelectric element 2310. More specifically, the first end 2810 can be provided on a surface opposite to one surface of the first disc portion 2311. Furthermore, the second end 2820 can be provided on the second piezoelectric element 2510 of the fourth drive unit 2500. For example, the second end 2820 can be provided on the second disc portion 2511 of the second piezoelectric element 2510. More specifically, the second end 2820 can be provided on a surface opposite to one surface of the second disc portion 2511.

[0335] That is, the second substrate 2800 can supply power to the first piezoelectric element 2310 and the second piezoelectric element 2510. Therefore, the third drive unit 2300 and the fourth drive unit 2500 can drive the first lens barrel 2200 and the second lens barrel 2400 respectively by the applied power.

[0336] As described above, the second camera actuator 2000 according to the embodiment includes a third drive unit 2300 and a fourth drive unit 2500, both of which include piezoelectric elements, and the first lens barrel 2200 and the second lens barrel 2400 can be moved in the optical axis direction by the third drive unit 2300 and the fourth drive unit 2500. However, the embodiment is not limited thereto, and the third drive unit 2300 and the fourth drive unit 2500 may include a voice coil motor (VCM) or a shape memory alloy. In this case, the third drive unit 2300 and the fourth drive unit 2500 can move the first lens barrel 2200 and the second lens barrel 2400 by using the electromagnetic force of the VCM or the physical change of the shape memory alloy.

[0337] The second camera actuator 2000 according to an embodiment may include an image sensor 2900. The image sensor 2900 can sequentially collect light passing through a first lens portion 2105, a second lens portion 2205, and a third lens portion 2405, and convert the light into an image. The image sensor 2900 can be configured such that the optical axes of the lens portions 2105, 2205, and 2405 coincide with each other. The optical axis of the image sensor 2900 and the optical axis of the lenses can be aligned.

[0338] Figure 27 This is a perspective view of a mobile terminal that uses a camera module according to an embodiment.

[0339] refer to Figure 27 The mobile terminal 3 may include a camera module 10, an autofocus device 31, and a flash module 33 located on the rear side.

[0340] The camera module 10 may include image capture functionality and autofocus functionality. For example, the camera module 10 may include an autofocus function that uses an image.

[0341] The camera module 10 processes image frames of still or moving images acquired by the image sensor in shooting mode or video call mode. The processed image frames can be displayed on a predetermined display unit and stored in memory. A camera (not shown) can also be mounted on the front of the mobile terminal body.

[0342] For example, camera module 10 may include a first camera module 10A and a second camera module 10B. In this case, at least one of the first camera module 10A and the second camera module 10B may include the aforementioned camera module, for example, according to... Figures 1 to 26 The camera module 10. Therefore, the camera module 10 can implement the OIS function together with the zoom function and the autofocus function.

[0343] The autofocus device 31 may include an autofocus function using a laser. The autofocus device 31 can be used primarily under conditions where the autofocus function of the image from the camera module 10 is degraded, for example, at a distance of 10m or less or in a dark environment. The autofocus device 31 may include: a light emitting unit comprising a vertical cavity surface-emitting laser (VCSEL) semiconductor device; and a light receiving unit that converts light energy, such as a photodiode, into electrical energy.

[0344] The flash module 33 may include a light-emitting device therein. The flash module 33 can be operated via the camera of a mobile terminal or via user control.

[0345] Next, Figure 28This is a perspective view of vehicle 5, which utilizes the camera module according to the embodiment. For example, Figure 28 It is an external view of a vehicle including a vehicle driving assistance device with a camera module 10 according to an embodiment.

[0346] refer to Figure 28 The vehicle 5 according to the embodiment may include wheels 53FL and 53RL that rotate via a power source and predetermined sensors. The sensors may be, but are not limited to, camera sensors 51.

[0347] Camera 51 may be a camera module according to an embodiment (e.g., according to...). Figures 1 to 26 The camera sensor of the camera module 10).

[0348] The vehicle 5 in this embodiment can acquire image information by capturing images of the front or surroundings through a camera sensor 51, and can use the image information to determine if a lane is not recognized, and generate a virtual lane when a lane is not recognized.

[0349] For example, camera sensor 51 can acquire a frontal image by taking a picture of the front of vehicle 5, and processor (not shown) can obtain image information by analyzing objects included in the frontal image.

[0350] For example, when an object such as a middle, curb, or street tree corresponding to a lane, adjacent vehicle, driving obstacle, or indirect road marking is captured in an image captured by camera sensor 51, the processor can detect such an object and include it in the image information.

[0351] In this scenario, the processor can also supplement the image information by acquiring distance information from objects detected by camera sensor 51. The image information can be information about the objects captured in the image.

[0352] The camera sensor 51 may include an image sensor and an image processing module. The camera sensor 51 can process still images or moving images acquired by the image sensor (e.g., CMOS or CCD). The image processing module can process the still images or moving images acquired by the image sensor, extract necessary information, and send the extracted information to a processor.

[0353] In this case, camera sensor 51 may include a stereo camera to improve the measurement accuracy of the object and further ensure information such as the distance between vehicle 5 and the object, but is not limited thereto.

[0354] The features, structures, effects, etc., described in the above embodiments are included in at least one embodiment, and are not necessarily limited to one embodiment. Furthermore, the features, structures, effects, etc., shown in each embodiment can be combined or modified by those skilled in the art for other embodiments. Therefore, content related to these combinations and variations should be interpreted as being included within the scope of the embodiments.

[0355] The above description primarily focuses on the embodiments, but these are merely examples and do not limit the scope of the embodiments. Those skilled in the art will understand that various modifications and applications, not shown above, can be made without departing from the essential characteristics of the presented embodiments. For example, each component specifically illustrated in the embodiments can be implemented through modifications. Furthermore, the differences associated with these modifications and applications should be interpreted as including within the scope of the embodiments set forth in the appended claims.

Claims

1. A camera actuator, comprising: case; The prism section is disposed within the housing; as well as A drive unit is disposed in the housing and tilts the prism portion; The driving unit includes: substrate part; A reinforcing plate is disposed on the base plate portion; and Multiple piezoelectric elements are disposed on the reinforcing plate. The substrate portion includes an opening that exposes the area where the plurality of piezoelectric elements are to be disposed on one surface of the reinforcing plate. The plurality of piezoelectric elements are electrically connected to the substrate portion when attached to the reinforcing plate through the opening.

2. The camera actuator of claim 1, wherein the plurality of piezoelectric elements comprises: The first piezoelectric element is disposed in a region that overlaps with the center of the prism portion in a first direction; as well as The second piezoelectric element is disposed in a region that overlaps with the center of the prism in a second direction different from the first direction; The prism portion is configured to be tiltable in the second direction via the first piezoelectric element, and also configured to be tiltable in the first direction via the second piezoelectric element.

3. The camera actuator according to claim 2, wherein, The prism portion includes: Prism; and A prism mover is positioned around the prism. The prism mover includes a first side facing the drive unit, and The first side portion includes a first protrusion corresponding to the first piezoelectric element and a second protrusion corresponding to the second piezoelectric element.

4. The camera actuator according to claim 3, wherein, The first piezoelectric element contacts the first protrusion, and The second piezoelectric element contacts the second protrusion.

5. The camera actuator according to claim 3, further comprising: The prism portion is connected to the retainer. The retainer includes a second side corresponding to the first side of the prism mover, and The second side portion includes a first retainer hole corresponding to the first piezoelectric element and the first protrusion, and a second retainer hole corresponding to the second piezoelectric element and the second protrusion.

6. The camera actuator according to claim 5, wherein, The retainer includes a rotation guide, and the recess of the prism mover engages with the rotation guide. The recess of the prism mover and the rotation guide include inclined surfaces.

7. The camera actuator according to claim 5, further comprising: The elastic part is connected to the retainer and the prism part, and applies pressure and supports the prism part in the direction of the second side.

8. The camera actuator according to claim 2, wherein, The opening exposes the area where the first piezoelectric element and the second piezoelectric element are to be installed on one surface of the reinforcing plate.

9. The camera actuator according to claim 8, further comprising: An adhesive portion is disposed on one surface of the reinforcing plate exposed through the opening; The first piezoelectric element and the second piezoelectric element are attached to the reinforcing plate via the adhesive portion.

10. The camera actuator according to claim 9, wherein, The drive unit includes a welding section that electrically connects the first piezoelectric element and the second piezoelectric element to the substrate.

11. The camera actuator according to claim 2, wherein, The substrate portion includes: The first region is disposed within the receiving space of the housing; and The second region extends from the first region and protrudes outside the base.

12. The camera actuator according to claim 11, wherein, The housing includes: a housing hole corresponding to a second region of the substrate portion; and a protrusion to which the second region of the substrate portion is connected.

13. The camera actuator according to claim 12, wherein, The second region of the substrate is connected to the housing and supports the drive unit and the prism unit to float in the housing's accommodating space.

14. A camera module, comprising: First camera actuator; as well as Second camera actuator; The first camera actuator performs the optical image stabilization (OIS) function, and The second camera actuator performs autofocus or zoom functions. The first camera actuator includes: case; A prism section is disposed within the housing; and A drive unit is disposed in the housing and tilts the prism portion; The driving unit includes: substrate part; A reinforcing plate is disposed on the base plate portion; and Multiple piezoelectric elements are disposed on the reinforcing plate. The substrate portion includes an opening that exposes the area where the plurality of piezoelectric elements are to be disposed on one surface of the reinforcing plate. The plurality of piezoelectric elements are electrically connected to the substrate portion when attached to the reinforcing plate through the opening.

15. The camera module according to claim 14, wherein, The plurality of piezoelectric elements include: A first piezoelectric element is disposed in a region overlapping with the center of the prism portion in a first direction; and The second piezoelectric element is disposed in a region that overlaps with the center of the prism in a second direction different from the first direction; The prism portion is configured to be tiltable in the second direction via the first piezoelectric element, and is also configured to be tiltable in the first direction via the second piezoelectric element.

16. The camera module according to claim 15, wherein, The prism portion includes: Prism; and A prism mover is positioned around the prism. The prism mover includes a first side facing the drive unit. The first side portion includes a first protrusion corresponding to the first piezoelectric element and a second protrusion corresponding to the second piezoelectric element. The first piezoelectric element contacts the first protrusion, and the second piezoelectric element contacts the second protrusion.

17. The camera module according to claim 16, wherein, The first camera actuator also includes: The prism portion is connected to the retainer. The retainer includes a second side portion corresponding to the first side portion of the prism mover. The second side portion includes a first retainer hole corresponding to the first piezoelectric element and the first protrusion, and a second retainer hole corresponding to the second piezoelectric element and the second protrusion. The retainer includes a rotation guide, and the recess of the prism mover is engaged in the rotation guide. The recess of the prism mover and the rotation guide include inclined surfaces.

18. The camera module according to claim 17, wherein, The opening exposes the area on one surface of the reinforcing plate where the first piezoelectric element and the second piezoelectric element are disposed, and The adhesive portion is disposed on one surface of the reinforcing plate exposed through the opening, and The first piezoelectric element and the second piezoelectric element are attached to the reinforcing plate via the adhesive portion.

19. The camera module according to claim 15, wherein, The substrate portion includes: The first region is disposed within the receiving space of the housing; and The second region extends from the first region and protrudes beyond the base. The housing includes: a housing hole corresponding to a second region of the substrate portion; and a protrusion to which the second region of the substrate portion is connected.

20. The camera module according to claim 19, wherein, The second region of the substrate is connected to the housing and supports the drive unit and the prism unit to float in the housing's accommodating space.

Images