Camera actuator and camera device comprising the same

Abstract

An embodiment discloses a camera actuator comprising: a housing; a sub-housing coupled to the housing; a mover disposed within the housing and having a prism disposed therein; and a tilt carrier disposed between the mover and the sub-housing, wherein the tilt carrier includes a first ball seating portion and a second ball seating portion facing the sub-housing, and a third ball seating portion and a fourth ball seating portion facing the mover, wherein the first ball seating portion and the second ball seating portion do not overlap in a first direction and a second direction perpendicular to the first direction, wherein the first direction is a direction perpendicular to the surface where light from the prism is incident, and the second direction is a direction parallel to the surface where light from the prism is emitted.

Description

Technology Field

[0001] The embodiment relates to a camera actuator and a camera module including the same. Background Technology

[0002] A camera is a device that captures subjects in photos or videos, and it is mounted on portable devices, drones, vehicles, etc. To improve image quality, camera modules may feature Image Stabilization (IS) to correct or prevent image shake caused by user movement, Auto Focusing (AF) to automatically adjust the distance between the image sensor and the lens to align the lens focal length, and Zooming to increase or decrease the magnification of distant subjects using a zoom lens.

[0003] Meanwhile, as image sensors increase in pixel count, the resolution rises and the size of the pixels decreases; consequently, as pixels become smaller, the amount of light received over the same period of time decreases. Therefore, in high-pixel cameras, image blur caused by hand shake resulting from slow shutter speeds in dark environments can appear more severe. A representative example of image stabilization (IS) technology is optical image stabilization (OIS), which corrects motion by changing the path of light.

[0004] If the center of the optical axis and the rotation axis of the prism performing OIS are different, distortion of the light received by the image sensor may occur, potentially reducing driving efficiency. In this case, a structure capable of aligning the optical axis and the rotation axis is required to satisfy optical performance requirements. The problem to be solved

[0005] An embodiment provides a camera actuator with improved optical performance and a camera module including the same.

[0006] In addition, a camera actuator with increased driving efficiency and a camera module including the same are provided.

[0007] The problem to be solved in the embodiments is not limited thereto, and may also include objectives or effects that can be identified from the means of solving the problem or the forms of implementation described below. means of solving the problem

[0008] A camera actuator according to an embodiment comprises a housing; a sub-housing coupled to the housing; a mover disposed within the housing and having a prism disposed therein; and a tilt carrier disposed between the mover and the sub-housing, wherein the tilt carrier includes a first ball seating portion and a second ball seating portion facing the sub-housing, and a third ball seating portion and a fourth ball seating portion facing the mover, wherein the first ball seating portion and the second ball seating portion do not overlap in a first direction and a second direction perpendicular to the first direction, and the first direction may be a direction perpendicular to the plane on which light from the prism is incident.

[0009] The third ball seating portion and the fourth ball seating portion may not overlap in the first direction and the second direction.

[0010] The above sub-housing may include a fifth ball seating portion facing the first ball seating portion and a sixth ball seating portion facing the second ball seating portion.

[0011] The above mover may include a seventh ball seating portion facing the third ball seating portion and an eighth ball seating portion facing the fourth ball seating portion.

[0012] It may include a first ball disposed between the first ball seating portion and the fifth ball seating portion, a second ball disposed between the second ball seating portion and the sixth ball seating portion, a third ball disposed between the third ball seating portion and the seventh ball seating portion, and a fourth ball disposed between the fourth ball seating portion and the eighth ball seating portion.

[0013] The tilt carrier and the mover can rotate with respect to a first axis which is an extension of the center of the first ball and the center of the second ball.

[0014] The above mover can rotate with respect to a second axis, which is an extension of the center of the third ball and the center of the fourth ball.

[0015] The intersection point of the first axis and the second axis may overlap with the center of the reflective surface that reflects light from the prism.

[0016] The distance between the first ball seating portion and the second ball seating portion may be greater than the distance between the first ball seating portion and the third ball seating portion or the distance between the first ball seating portion and the fourth ball seating portion.

[0017] The first ball seating portion and the third ball seating portion overlap with the prism in the second direction, and the second ball seating portion and the fourth ball seating portion may not overlap with the prism in the second direction.

[0018] The distance between the first ball seating portion and the third ball seating portion may be greater than the distance between the first ball seating portion and the fourth ball seating portion.

[0019] It includes first to third magnets disposed in the mover, and the first magnet and the second magnet may be disposed spaced apart in the second direction.

[0020] The above third magnet can be superimposed in the first direction with the center of the reflective surface that reflects the light of the prism.

[0021] The first magnet and the second magnet may not overlap with the first to fourth ball seating portions in the second direction.

[0022] The above tilt carrier includes a support member comprising at least one bending structure, and

[0023] The first to fourth ball seating portions may be spaced apart from each other on the support portion.

[0024] The first ball seating portion and the third ball seating portion may include four inclined surfaces, and the second ball seating portion and the fourth ball seating portion may include two inclined surfaces. Effects of the invention

[0025] According to an embodiment, the embodiment may provide a camera actuator with improved optical performance and a camera module including the same.

[0026] In addition, a camera actuator with increased driving efficiency and a camera module including the same can be provided.

[0027] The various and beneficial advantages and effects of the present invention are not limited to those described above and may be more easily understood in the process of explaining specific embodiments of the present invention. Brief explanation of the drawing

[0028] FIG. 1 is a perspective view of a camera module according to an embodiment, and FIG. 2 is an exploded perspective view of a camera module according to an embodiment, and FIG. 3 is a cross-sectional view of a camera module cut along AA' in FIG. 1, and FIG. 4 is a perspective view of a camera actuator according to an embodiment, and FIG. 5 is an exploded perspective view of a camera actuator according to an embodiment, and FIG. 6 is a cross-sectional view of a camera actuator cut at BB' in FIG. 4, and FIG. 7 is a cross-sectional view of a camera actuator cut along CC' in FIG. 4, and FIG. 8 is a cross-sectional view of a camera actuator cut along DD' in FIG. 4, and FIG. 9 is a cross-sectional view of a camera actuator cut along EE' in FIG. 4, and FIG. 10 is a cross-sectional view of a camera actuator cut along FF' in FIG. 4, and FIG. 11 is a cross-sectional view of a camera actuator cut along GG' in FIG. 4, and FIG. 12 is a perspective view of a housing of a camera actuator according to an embodiment, and FIG. 13 is a perspective view of a sub-housing of a camera actuator according to an embodiment, and FIG. 14 is a front view of a sub-housing of a camera actuator according to an embodiment, and FIG. 15 is a perspective view of a tilt carrier of a camera actuator according to an embodiment, and FIG. 16 is a rear view of a tilt carrier of a camera actuator according to an embodiment, and FIG. 17 is a front view of a tilt carrier of a camera actuator according to an embodiment, and FIG. 18 is a side view of a tilt carrier of a camera actuator according to an embodiment, and FIG. 19 is a perspective view of a mover of a camera actuator according to an embodiment, and FIG. 20 is a rear view of a mover of a camera actuator according to an embodiment, and FIG. 21 is a drawing showing the combination of a mover and a tilt carrier of a camera actuator according to an embodiment, and FIG. 22 is a drawing showing the combined appearance of a mover, a tilt carrier, and a sub-housing of a camera actuator according to an embodiment, and FIG. 23 is a front view of a substrate portion of a camera actuator according to an embodiment, and FIG. 24 is a drawing showing the housing, sub-housing, and substrate portion of a camera actuator combined according to an embodiment, and FIG. 25 is a perspective view of a magnet portion of a camera actuator according to an embodiment, and FIG. 26 is a perspective view of a mobile terminal with a camera module applied according to an embodiment, and FIG. 27 is a perspective view of a vehicle with a camera module applied according to an embodiment. Specific details for implementing the invention

[0029] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0030] However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted.

[0031] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0032] Furthermore, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0033] In this specification, the singular form may include the plural form unless specifically stated otherwise in the text, and when described as "at least one of A and B and C (or more than one)," it may include one or more of all combinations that can be formed from A, B, and C.

[0034] In addition, terms such as first, second, A, B, (a), (b), etc. may be used when describing the components of the embodiments of the present invention.

[0035] These terms are intended merely to distinguish a component from other components and are not limited by the nature, order, sequence, etc., of the said component.

[0036] And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component.

[0037] Furthermore, when described as being formed or placed "above or below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above or below," it may include the meaning of a downward direction as well as an upward direction relative to a single component.

[0038] FIG. 1 is a perspective view of a camera module according to an embodiment, FIG. 2 is an exploded perspective view of a camera module according to an embodiment, and FIG. 3 is a cross-sectional view of a camera module cut at AA' in FIG. 1.

[0039] Referring to FIGS. 1 and 2, a camera module (1000) according to an embodiment may consist of a cover (CV), a first camera actuator (1100), a second camera actuator (1200), and a circuit board (1300). Here, the first camera actuator (1100) may be used as the first actuator, and the second camera actuator (1200) may be used as the second actuator.

[0040] The cover (CV) can cover the first camera actuator (1100) and the second camera actuator (1200). The coupling force between the first camera actuator (1100) and the second camera actuator (1200) can be improved by the cover (CV).

[0041] Furthermore, the cover (CV) may be made of a material that performs electromagnetic shielding. Accordingly, the first camera actuator (1100) and the second camera actuator (1200) inside the cover (CV) can be easily protected.

[0042] And the first camera actuator (1100) may be an OIS (Optical Image Stabilizer) actuator. For example, the first camera actuator (1100) may move an optical member in a direction perpendicular to the optical axis.

[0043] The first camera actuator (1100) may include a fixed focal length lens disposed in a predetermined barrel (not shown). The fixed focal length lens may also be referred to as a “single focal length lens” or a “single lens.”

[0044] The first camera actuator (1100) can change the path of light. In an embodiment, the first camera actuator (1100) can change the path of light vertically through an internal optical element (e.g., a prism or a mirror). With this configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be placed within the mobile terminal through the change of the path of light so that magnification, autofocus (AF), and OIS functions can be performed.

[0045] However, it is not limited to this, and the first camera actuator (1100) can change the light path multiple times vertically or at a predetermined angle.

[0046] The second camera actuator (1200) may be positioned at the rear end of the first camera actuator (1100). The second camera actuator (1200) may be coupled with the first camera actuator (1100). And the coupling between them may be achieved in various ways.

[0047] Additionally, the second camera actuator (1200) may be a zoom actuator or an AF (Auto Focus) actuator. For example, the second camera actuator (1200) may support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an auto-focusing function or a zoom function. Also, one or more lenses may move independently or individually along the optical axis direction to perform AF.

[0048] A circuit board (1300) may be positioned at the rear end of a second camera actuator (1200). The circuit board (1300) may be electrically connected to the second camera actuator (1200) and the first camera actuator (1100). Additionally, there may be multiple circuit boards (1300). The circuit board (1300) may include an image sensor (IS) and may be fixed inside a camera module (1000). Additionally, the circuit board (1300) may be electrically connected to another sensor module within the terminal or to a processor of the terminal. Through this, the aforementioned camera actuator and the camera module including it can transmit and receive various signals within the terminal. The circuit board (1300) may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), or a rigid-flexible printed circuit board (Rigid Flexible PCB). However, it is not limited to these types.

[0049] The camera module according to the embodiment may consist of a single or multiple camera modules. For example, the multiple camera modules may include a first camera module and a second camera module.

[0050] And the first camera module may include a single or multiple actuators. For example, the first camera module may include a first camera actuator (1100) and a second camera actuator (1200).

[0051] The second camera module may be disposed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving a lens portion. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, etc., and may be applied in various ways such as electrostatic, thermal, bimorphic, and electrostatic force methods, but is not limited thereto. In addition, in this specification, the camera actuator may be referred to as an actuator, etc. Furthermore, a camera module composed of a plurality of camera modules may be mounted in various electronic devices such as mobile terminals.

[0052] Referring to FIG. 3, the camera module according to the embodiment may include a first camera actuator (1100) that performs an OIS function and a second camera actuator (1200) that performs a zooming function and an AF function.

[0053] Light can be incident into a camera module or into the first camera actuator through an aperture region located on the upper surface of the first camera actuator (1100). That is, light is incident into the interior of the first camera actuator (1100) along the optical axis direction (e.g., X-axis direction), and the optical path can be changed in a vertical direction (e.g., Z-axis direction) through an optical member. Then, light passes through the second camera actuator (1200) and can be incident on an image sensor (IS) located at one end of the second camera actuator (1200) (PATH).

[0054] In this specification, the bottom surface refers to one side in the first direction. The first direction is the Z-axis direction in the drawing and may be used interchangeably with the first axis direction, etc. The second direction is the X-axis direction in the drawing and may be used interchangeably with the second axis direction, etc. The second direction is a direction perpendicular to the first direction. Additionally, the third direction is the Y-axis direction in the drawing and may be used interchangeably with the third axis direction, etc. The third direction is a direction perpendicular to both the first direction and the second direction. Here, the first direction (Z-axis direction) corresponds to the optical axis direction, and the second direction (X-axis direction) and the third direction (Y-axis direction) are directions perpendicular to the optical axis and may be tilted by the first camera actuator. The first direction is a direction perpendicular to the surface of the prism where light is incident, and the second direction may be a direction parallel to the surface of the prism where light is emitted. The third direction may be a direction perpendicular to the surface of the prism where light is emitted. In addition, in the description of the first camera actuator (1100) below, the optical axis direction is the first direction (Z-axis direction), and the description below is based on this.

[0055] Additionally, in this specification, the inner side may be the direction toward the first camera actuator from the cover (CV), and the outer side may be the opposite direction of the inner side. That is, the first camera actuator and the second camera actuator may be located on the inner side of the cover (CV), and the cover (CV) may be located on the outer side of the first camera actuator or the second camera actuator. Additionally, in this specification, the inner side may be the direction toward the first or second camera actuator from the bracket or shield can to be described later, and the outer side may be the opposite direction of the inner side.

[0056] And by this configuration, the camera module according to the embodiment can improve the spatial limitations of the first camera actuator and the second camera actuator by changing the light path. That is, the camera module according to the embodiment can expand the light path while minimizing the thickness of the camera module in response to the change in the light path. Furthermore, it should be understood that the second camera actuator can provide a high range of magnification by controlling focus, etc., in the expanded light path.

[0057] In addition, the camera module according to the embodiment can implement OIS by controlling the optical path through the first camera actuator, thereby minimizing the occurrence of decent or tilt phenomena and producing optimal optical characteristics.

[0058] Furthermore, the second camera actuator (1200) may include an optical system and a lens driving unit. For example, at least one of the first lens assembly, the second lens assembly, the third lens assembly, and the guide pin may be disposed in the second camera actuator (1200). Additionally, the second camera actuator (1200) may be equipped with a coil and a magnet to perform a high-magnification zooming function.

[0059] For example, the first lens assembly and the second lens assembly may be moving lenses that move via coils, magnets, and guide pins, and the third lens assembly may be a fixed lens, but is not limited thereto. For example, the third lens assembly may perform the function of a focuser that forms an image of light at a specific location, and the first lens assembly may perform the function of a variationator that re-forms the image formed by the third lens assembly (focuser) at a different location. Meanwhile, the first lens assembly may be in a state where the magnification changes significantly due to a large change in the distance to the subject or the image distance, and the first lens assembly (variator) may play an important role in the change of focal length or magnification of the optical system. On the other hand, the image formed by the first lens assembly (variator) may differ slightly depending on the location. Accordingly, the second lens assembly may perform a position compensation function for the image formed by the variationator. For example, the second lens assembly can perform the function of a compensator that accurately forms the image formed by the first lens assembly (which acts as a transducer) at the actual image sensor location. For example, the first lens assembly and the second lens assembly can be driven by electromagnetic force resulting from the interaction between a coil and a magnet. The above description may be applied to the lens assembly described below. Furthermore, the first to third lens assemblies can move along the optical axis direction, that is, the third direction. Additionally, the first to third lens assemblies can move in the third direction independently or dependently of each other.

[0060] Meanwhile, according to an embodiment of the present invention, when an actuator for OIS and an actuator for AF or Zoom are arranged, magnetic field interference with the magnet for AF or Zoom can be prevented during OIS operation. Since the first driving magnet of the first camera actuator (1100) is arranged separately from the second camera actuator (1200), magnetic field interference between the first camera actuator (1100) and the second camera actuator (1200) can be prevented. In this specification, OIS may be used interchangeably with terms such as hand shake correction, optical image stabilization, optical image correction, and shake correction.

[0061] In the following description of FIGS. 4 to 25, the camera actuator may correspond to the first camera actuator in the camera module of FIGS. 1 to 3. That is, in the following description of FIGS. 4 to 25, the camera actuator may correspond to an OIS actuator.

[0062] FIG. 4 is a perspective view of a camera actuator according to an embodiment, FIG. 5 is an exploded perspective view of a camera actuator according to an embodiment, FIG. 6 is a cross-sectional view of a camera actuator cut at BB' in FIG. 4, FIG. 7 is a cross-sectional view of a camera actuator cut at CC' in FIG. 4, FIG. 8 is a cross-sectional view of a camera actuator cut at DD' in FIG. 4, FIG. 9 is a cross-sectional view of a camera actuator cut at EE' in FIG. 4, FIG. 10 is a cross-sectional view of a camera actuator cut at FF' in FIG. 4, and FIG. 11 is a cross-sectional view of a camera actuator cut at GG' in FIG. 4.

[0063] Referring to FIGS. 4 to 11, the camera actuator (1100) may include a housing (1110), a sub-housing (1120), a tilt carrier (1130), a mover (1140), a substrate part (1150), and a magnet part (1160).

[0064] FIG. 12 is a perspective view of a housing of a camera actuator according to an embodiment.

[0065] Referring to FIGS. 4 through 12, the camera actuator (1100) may include a housing (1110). The housing (1110) may form the outer wall of the camera actuator (1100). A sub-housing (1120), a tilt carrier (1130), a mover (1140), and a magnet part (1160) may be disposed inside the housing (1110). A substrate part (1150) may be disposed outside the housing (1110). The housing (1110) may include a shape in which the outer side is partially open to allow light to be incident or emitted.

[0066] The housing (1110) may include first to sixth sides (S1, S2, S3, S4, S5, S6). The first side (S1) and the second side (S2) may be surfaces perpendicular to the first direction. The first side (S1) may be a surface into which light is incident. The first side (S1) may include an open shape to allow light to be incident on the prism (1143). The second side (S2) may support the sub-housing (1120) and the mover (1140). The second side (S2) may include a third coil hole (h3) to allow the third coil to be placed. The third side (S3) and the fourth side (S4) may be surfaces perpendicular to the second direction. The third side (S3) may include a first coil hole (h1) for placing a first coil (C1), and the fourth side (S4) may include a second coil hole (h2) for placing a second coil (C2). Additionally, a substrate portion (1150) may be placed on the outer side of the second side (S2), the third side (S3), and the fourth side (S4). The fifth side (S5) and the sixth side (S6) may be surfaces perpendicular to the third direction. The fifth side (S5) may be a surface from which light is emitted. Light may be reflected by a prism (1143) and emitted to the outside through the fifth side (S5) of the housing (1110). The fifth side (S5) may include an open shape to allow light to be emitted. A sub-housing (1120) may be placed on the sixth side (S6). The sixth side (S6) may include an open shape so that a sub-housing (1120) is positioned.

[0067] FIG. 13 is a perspective view of a sub-housing of a camera actuator according to an embodiment, and FIG. 14 is a front view of a sub-housing of a camera actuator according to an embodiment.

[0068] Referring to FIGS. 4 through 14, the camera actuator (1100) may include a sub-housing (1120). The sub-housing (1120) may be disposed in the housing (1110). The sub-housing (1120) may be coupled to the housing (1110). The sub-housing (1120) may be disposed on the sixth side (S6) of the housing (1110). The sub-housing (1120) may be in contact with a tilt carrier (1130). Additionally, a substrate portion (1150) may be disposed on the outer side of the sub-housing (1120). A plate (1123) may be disposed in the sub-housing (1120). The plate (1123) may fix the mover (1140) through interaction with the fourth magnet. Additionally, a first ball (b1) and a second ball (b2) may be placed in the sub-housing (1120).

[0069] The sub-housing (1120) may include at least one ball seating portion. The sub-housing (1120) may include a fifth ball seating portion (1121) and a sixth ball seating portion (1122). A first ball (b1) and a second ball (b2) may be disposed in the fifth ball seating portion (1121) and the sixth ball seating portion (1122), respectively. The fifth ball seating portion (1121) and the sixth ball seating portion (1122) may face the tilt carrier (1130). The fifth ball seating portion (1121) and the sixth ball seating portion (1122) may include a shape that is recessed by a certain width in a third direction. The fifth ball seating portion (1121) and the sixth ball seating portion (1122) may include a plurality of inclined surfaces. For example, the fifth ball seating portion (1121) may include four inclined surfaces, and the sixth ball seating portion (1122) may include two inclined surfaces. In this case, the fifth ball seating portion (1121) may support the first ball (b1) at four points, and the sixth ball seating portion (1122) may support the second ball (b2) at two points or three points.

[0070] The fifth ball seating portion (1121) and the sixth ball seating portion (1122) may not overlap each other in the first direction or the second direction. That is, the fifth ball seating portion (1121) and the sixth ball seating portion (1122) may be arranged diagonally opposite each other. The fifth ball seating portion (1121) may be arranged adjacent to the fourth side (S4) and the first side (S1) of the housing (1110), and the sixth ball seating portion (1122) may be arranged adjacent to the third side (S3) and the second side (S2) of the housing (1110). The fifth ball seating portion (1121) and the sixth ball seating portion (1122) may each face the first ball seating portion (1131) and the second ball seating portion (1132) of the tilt carrier (1130). The fifth ball seating portion (1121) overlaps with the first ball seating portion (1131) in a third direction, and the sixth ball seating portion (1122) can overlap with the second ball seating portion (1132) in a third direction.

[0071] FIG. 15 is a perspective view of a tilt carrier of a camera actuator according to an embodiment, FIG. 16 is a rear view of a tilt carrier of a camera actuator according to an embodiment, FIG. 17 is a front view of a tilt carrier of a camera actuator according to an embodiment, and FIG. 18 is a side view of a tilt carrier of a camera actuator according to an embodiment.

[0072] Referring to FIGS. 4 through 18, the camera actuator (1100) may include a tilt carrier (1130). The tilt carrier (1130) may be positioned inside the housing (1110). The tilt carrier (1130) may be positioned between the sub-housing (1120) and the mover (1140). The tilt carrier (1130) may be positioned between the sub-housing (1120) and the mover (1140) to perform tilting. The tilt carrier (1130) may be in contact with the sub-housing (1120) and the mover (1140). The tilt carrier (1130) may be overlapped with the sub-housing (1120) and the mover (1140) in a third direction. A portion of the tilt carrier (1130) may overlap with the coupling member (1120) or the mover (1140) in a first direction or a second direction. The tilt carrier (1130) may extend in the second direction. That is, the width of the tilt carrier (1130) in the second direction may be greater than the width in the first direction. The tilt carrier (1130) may include first to fourth ball seating portions (1131, 1132, 1133, 1134) and a support portion (1135).

[0073] The first ball seating portion (1131) and the second ball seating portion (1132) may face the sub-housing (1120). The first ball seating portion (1131) and the second ball seating portion (1132) may overlap in a third direction with the fifth ball seating portion (1121) and the sixth ball seating portion (1122) of the sub-housing (1120), respectively. The first ball seating portion (1131) and the second ball seating portion (1132) may contact the first ball (b1) and the second ball (b2), respectively. The first ball (b1) may be positioned between the first ball seating portion (1131) and the fifth ball seating portion (1121), and the second ball (b2) may be positioned between the second ball seating portion (1132) and the sixth ball seating portion (1122). The first ball seating portion (1131) and the second ball seating portion (1132) may include a shape that is recessed by a certain width in a third direction. The first ball seating portion (1131) and the second ball seating portion (1132) may include a plurality of inclined surfaces. For example, the first ball seating portion (1131) may include four inclined surfaces, and the second ball seating portion (1132) may include two inclined surfaces. In this case, the first ball seating portion (1131) may support the first ball (b1) at four points, and the second ball seating portion (1132) may support the second ball (b2) at two or three points.

[0074] The first ball seating portion (1131) and the second ball seating portion (1132) may not overlap each other in the first direction or the second direction. That is, the first ball seating portion (1131) and the second ball seating portion (1132) may be arranged diagonally opposite each other. The first ball seating portion (1131) may be arranged adjacent to the fourth side (S4) and the first side (S1) of the housing (1110), and the second ball seating portion (1132) may be arranged adjacent to the third side (S3) and the second side (S2) of the housing (1110). The first ball seating portion (1131) and the second ball seating portion (1132) may be arranged spaced apart from each other by a certain distance in the first direction and the second direction. The distance between the first ball mounting portion (1131) and the second ball mounting portion (1132) may be greater than the distance between the first ball mounting portion (1131) and the third ball mounting portion (1133) or the fourth ball mounting portion (1134). Additionally, the distance between the first ball mounting portion (1131) and the third ball mounting portion (1133) may be greater than the distance between the first ball mounting portion (1131) and the fourth ball mounting portion (1134). The first ball mounting portion (1131) may overlap with the prism (1143) in the second direction, and the second ball mounting portion (1132) may not overlap with the prism (1143) in the second direction.

[0075] As the first ball mounting portion (1131) and the second ball mounting portion (1132) are arranged diagonally, the first ball (b1) and the second ball (b2) placed in the first ball mounting portion (1131) and the second ball mounting portion (1132) can be arranged diagonally. The first ball (b1) and the second ball (b2) can be arranged so as not to overlap in the first direction and the second direction. The tilt carrier (1130) and the mover (1140) can rotate around the center of the first ball (b1) and the second ball (b2). The extension of the center of the first ball (b1) and the second ball (b2) can form a first axis (l1). The tilt carrier (1130) and the mover (1140) can rotate around the first axis (l1). At this time, the first axis (l1) can overlap with the center of the reflective surface (1143b) of the prism (1143).

[0076] The third ball seating portion (1133) and the fourth ball seating portion (1134) may face the mover (1140). The third ball seating portion (1133) and the fourth ball seating portion (1134) may overlap in a third direction with the seventh ball seating portion (1141) and the eighth ball seating portion (1142) of the mover (1140), respectively. The third ball seating portion (1133) and the fourth ball seating portion (1134) may contact the third ball (b3) and the fourth ball (b4), respectively. The third ball (b3) may be positioned between the third ball seating portion (1133) and the seventh ball seating portion (1141), and the fourth ball (b4) may be positioned between the fourth ball seating portion (1134) and the eighth ball seating portion (1142). The third ball seating portion (1133) and the fourth ball seating portion (1134) may include a shape that is recessed by a certain width in the third direction. The third ball seating portion (1133) and the fourth ball seating portion (1134) may include a plurality of inclined surfaces. For example, the third ball seating portion (1133) may include four inclined surfaces, and the fourth ball seating portion (1134) may include two inclined surfaces. In this case, the third ball seating portion (1133) may support the third ball (b3) at four points, and the fourth ball seating portion (1134) may support the fourth ball (b4) at two or three points.

[0077] The third ball seating portion (1133) and the fourth ball seating portion (1134) may not overlap each other in the first direction or the second direction. That is, the third ball seating portion (1133) and the fourth ball seating portion (1134) may be arranged diagonally from each other. The third ball seating portion (1133) may be arranged adjacent to the third side (S3) and the first side (S1) of the housing (1110), and the fourth ball seating portion (1134) may be arranged adjacent to the fourth side (S4) and the second side (S2) of the housing (1110). The third ball seating portion (1133) and the fourth ball seating portion (1134) may be arranged spaced apart from each other by a certain distance in the first direction and the second direction. The third ball mounting portion (1133) overlaps with the prism (1143) in the second direction, and the fourth ball mounting portion (1134) may not overlap with the prism (1143) in the second direction.

[0078] The third ball seating portion (1133) may not overlap with the first ball seating portion (1131) in the second direction. Additionally, the third ball seating portion (1133) may not overlap with the second ball seating portion (1132) in the first direction. The fourth ball seating portion (1134) may not overlap with the second ball seating portion (1132) in the second direction. Additionally, the fourth ball seating portion (1134) may not overlap with the first ball seating portion (1131) in the first direction.

[0079] As the third ball mounting portion (1133) and the fourth ball mounting portion (1134) are arranged diagonally, the third ball (b3) and the fourth ball (b4) placed in the third ball mounting portion (1133) and the fourth ball mounting portion (1134) can be arranged diagonally. The third ball (b3) and the fourth ball (b4) can be arranged so as not to overlap in the first direction and the second direction. The mover (1140) can rotate around the center of the third ball (b3) and the fourth ball (b4). The extension of the center of the third ball (b3) and the fourth ball (b4) can form a second axis (l2). The mover (1140) can rotate around the second axis (l2). At this time, the second axis (l2) can overlap with the center of the reflective surface (1143b) of the prism (1143).

[0080] The first axis (l1) and the second axis (l2) may intersect each other. The intersection point of the first axis (l1) and the second axis (l2) may overlap with the center of the reflective surface (1143b) of the prism (1143). That is, the first axis (l1) and the second axis (l2) may intersect at the center of the reflective surface (1143b) of the prism (1143). The intersection point of the first axis (l1) and the second axis (l2) may overlap with the optical axis of the prism (1143). The optical axis of the prism (1143) may refer to an axis perpendicular to the incident surface (1143a) that passes through the center of the incident surface (1143a) of the light of the prism. Additionally, the intersection point of the first axis (l1) and the second axis (l2) may overlap with the optical axis of the reflected light of the prism (1143). The optical axis of the reflected light of the prism (1143) may mean an axis perpendicular to the light emission surface (1143c) that passes through the center of the light emission surface (1143c) of the prism (1143). That is, the intersection point of the first axis (l1) and the second axis (l2) may coincide with the intersection point of the optical axis of the incident light of the prism (1143) and the optical axis of the reflected light. The first axis (l1) and the second axis (l2) may form a certain angle. The angle formed by the first axis (l1) and the second axis (l2) may be 55˚ to 65˚. For example, the angle formed by the first axis (l1) and the second axis (l2) may be 60˚. Here, the angle formed by the first axis (l1) and the second axis (l2) may mean an angle facing the second direction. Since the tilt carrier (1130) and the prism (1143) have a width in the second direction greater than the width in the first direction, the angle formed by the first axis (l1) and the second axis (l2) can be formed to be less than 90˚, and the tilting of the prism (1143) can be performed stably. In addition, the prism (1143) placed within the mover (1140) can rotate around the center of the reflective surface (1143b) of the prism (1143). Accordingly, the camera actuator (1100) can align the rotation axis with the optical axis of the prism (1143) during the process of performing tilting, and can improve OIS performance.In addition, the camera actuator (1100) can align the center of the tilt with the center of gravity when driving OIS, thereby increasing driving efficiency, minimizing the reduction in resolution due to OIS driving, and achieving miniaturization of the module.

[0081] The support member (1135) can support the first to fourth ball seating members (1131, 1132, 1133, 1134). The first to fourth ball seating members (1131, 1132, 1133, 1134) may be spaced apart from each other on the support member (1135). The support member (1135) may include at least one bending structure. The support member (1135) may extend in a second direction. The support member (1135) may include a portion bent in a first direction. The width of the support member (1135) in the second direction may be greater than the width of the support member (1135) in the first direction. The first to fourth ball seating portions (1131, 1132, 1133, 1134) may include areas that do not overlap with the support portion (1135) in the first direction. The first ball seating portion (1131) and the second ball seating portion (1132) may protrude a certain width toward the mover (1140) with respect to the third direction from the support portion (1135). The third ball seating portion (1133) and the fourth ball seating portion (1134) may protrude a certain width toward the sub-housing (1120) with respect to the third direction from the support portion (1135). That is, the first to fourth ball seating portions (1131, 1132, 1133, 1134) protrude in the opposite direction to the direction in which the ball is placed, thereby reducing the space required to be placed between the sub-housing (1120) and the mover (1140).

[0082] FIG. 19 is a perspective view of a mover of a camera actuator according to an embodiment, FIG. 20 is a rear view of a mover of a camera actuator according to an embodiment, FIG. 21 is a drawing showing the mover of a camera actuator and a tilt carrier combined according to an embodiment, and FIG. 22 is a drawing showing the mover, tilt carrier, and sub-housing of a camera actuator combined according to an embodiment.

[0083] Referring to FIGS. 4 through 22, the camera actuator (1100) may include a mover (1140). A prism (1143) may be disposed in the mover (1140). The mover (1140) may rotate about a first axis or a second axis in contact with a tilt carrier (1130). The mover (1140) may perform tilting of the prism (1143) by rotating about the first axis or the second axis. The mover (1140) may be disposed inside the housing (1110). The mover (1140) may include a receiving space where the prism (1143) is disposed. Additionally, the mover (1140) may include an inclined surface where the reflective surface (1143a) of the prism (1143) is disposed. First to fourth magnets (1161, 1162, 1163, 1164) may be disposed in the mover (1140). The mover (1140) may include a magnet groove into which the first to fourth magnets (1161, 1162, 1163, 1164) are disposed. A third ball (b3) and a fourth ball (b4) may be disposed in the mover (1140). The mover (1140) may include a receiving space into which a tilt carrier (1130) is disposed. The mover (1140) may partially overlap with the tilt carrier (1130) and the sub-housing (1120) in a first direction and a second direction.

[0084] The mover (1140) may include at least one ball seating portion. The mover (1140) may include a seventh ball seating portion (1141) and an eighth ball seating portion (1142). A third ball (b3) and a fourth ball (b4) may be disposed in the seventh ball seating portion (1141) and the eighth ball seating portion (1142), respectively. The seventh ball seating portion (1141) and the eighth ball seating portion (1142) may face the tilt carrier (1130). The seventh ball seating portion (1141) and the eighth ball seating portion (1142) may include a shape that is recessed by a certain width in a third direction. The seventh ball seating portion (1141) and the eighth ball seating portion (1142) may include a plurality of inclined surfaces. For example, the seventh ball seating portion (1141) may include four inclined surfaces, and the eighth ball seating portion (1142) may include two inclined surfaces. In this case, the seventh ball seating portion (1141) may support the third ball (b3) at four points, and the eighth ball seating portion (1142) may support the fourth ball (b4) at two points or three points.

[0085] The seventh ball seating portion (1141) and the eighth ball seating portion (1142) may not overlap each other in the first direction or the second direction. That is, the seventh ball seating portion (1141) and the eighth ball seating portion (1142) may be arranged diagonally opposite each other. The seventh ball seating portion (1141) may be arranged adjacent to the third side (S3) and the first side (S1) of the housing (1110), and the eighth ball seating portion (1142) may be arranged adjacent to the fourth side (S4) and the second side (S2) of the housing (1110). The seventh ball seating portion (1141) and the eighth ball seating portion (1142) may each face the third ball seating portion (1133) and the fourth ball seating portion (1134) of the tilt carrier (1130). The seventh ball seating portion (1141) overlaps with the third ball seating portion (1133) in the third direction, and the eighth ball seating portion (1142) can overlap with the fourth ball seating portion (1134) in the third direction.

[0086] The mover (1140) may include a prism (1143). The prism (1143) may reflect light. The prism (1143) may be placed on an inclined surface of the mover (1140). The prism (1143) may reflect and emit light incident from the outside. The prism (1143) may include an incident surface (1143a) where light is incident, a reflective surface (1143b) where light is reflected, and an exit surface (1143c) where light is emitted. The reflective surface (1143b) of the prism (1143) may be placed on an inclined surface of the mover (1140). The incident surface (1143a) of the prism (1143) may be placed perpendicular to a first direction. The exit surface (1143c) of the prism (1143) may be placed perpendicular to a third direction. The center of the reflective surface (1143b) of the prism (1143) may overlap with the optical axis of the prism (1143) and the optical axis of the reflected light of the prism (1143). Additionally, the center of the reflective surface (1143b) of the prism (1143) may overlap with the intersection of the first axis (l1) and the second axis (l2).

[0087] FIG. 23 is a front view of the substrate portion of a camera actuator according to an embodiment, and FIG. 24 is a drawing showing the housing, sub-housing, and substrate portion of a camera actuator combined according to an embodiment.

[0088] Referring to FIGS. 4 through 23, the camera actuator (1100) may include a substrate portion (1150). The substrate portion (1150) may supply power required for driving the camera actuator (1100). The substrate portion (1150) may be disposed on the outside of the housing (1110). The substrate portion (1150) may be disposed on the outside of the second side (S2), the third side (S3), and the fourth side (S4) of the housing (1110). The substrate portion (1150) may include a first sub-substrate to a third sub-substrate (1150a, 1150b, 1150c), a first coil to a third coil (C1, C2, C3), a sensor portion (1151), and a driver IC (1152).

[0089] The substrate portion (1150) may include a first sub-substrate (1150a) and a second sub-substrate (1150b) in a form that is bent from a third sub-substrate (1150c). The first sub-substrate (1150a) and the second sub-substrate (1150b) may be arranged perpendicular to the second direction, and the third sub-substrate (1150c) may be arranged perpendicular to the first direction. The first sub-substrate (1150a) and the second sub-substrate (1150b) may be bent in the first direction from both ends of the third sub-substrate (1150c). A first sub-substrate (1150a) may be placed on the third side (S3) of the housing (1110), a second sub-substrate (1150b) may be placed on the fourth side (S4) of the housing (1110), and a third sub-substrate (1150c) may be placed on the second side (S2) of the housing (1110).

[0090] The first to third coils (C1, C2, C3) may each be placed on the first to third sub-substrates (1150a, 1150b, 1150c). The first to third coils (C1, C2, C3) may each perform OIS driving by applying electromagnetic force to the first to third magnets (1161, 1162, 1163). The first to third coils (C1, C2, C3) may include holes on the inside. The first coil (C1) may be placed in the first coil hole (h1) of the housing (1110), the second coil (C2) may be placed in the second coil hole (h2) of the housing (1110), and the third coil (C3) may be placed in the third coil hole (h3) of the housing (1100). The first coil (C1) and the second coil (C2) may have their major axes arranged in the first direction, and the third coil (C3) may have its major axis arranged in the second direction. The first coil (C1) and the second coil (C2) may overlap in the second direction.

[0091] The sensor unit (1151) can sense the OIS driving of the camera actuator (1100). The sensor unit (1151) can be placed inside the substrate unit (1150). The sensor unit (1151) may include a plurality of sensors. The sensor unit (1151) can be placed in the inner holes of the first to third coils (C1, C2, C3). The driver IC (1152) can be placed inside the substrate unit (1150). The driver IC (1152) can control the driving of the camera actuator (1100).

[0092] FIG. 25 is a perspective view of the magnet portion of a camera actuator according to an embodiment.

[0093] Referring to FIGS. 4 through 25, the camera actuator (1100) may include a magnet portion (1160). The magnet portion (1160) can tilt the mover (1140) through interaction with the first to third coils (C1, C2, C3). Additionally, the magnet portion (1160) can fix the mover (1140). The magnet portion (1160) may include at least one magnet and at least one magnet yoke. The magnet portion (1160) may include first to fourth magnets (1161, 1162, 1163, 1164). Additionally, the magnet portion (1160) may include a first magnet yoke to a third magnet yoke (1161a, 1162a, 1163a).

[0094] The first to third magnets (1161, 1162, 1163) may be driving magnets. The first to third magnets (1161, 1162, 1163) may each tilt the mover (1140) through interaction with the first to third coils (C1, C2, C3). The first to third magnets (1161, 1162, 1163) may be placed on the mover (1140). The first to third magnets (1161, 1162, 1163) may be placed in the magnet grooves of the mover (1140). The first magnet (1161) and the second magnet (1162) may be placed perpendicular to the second direction. The third magnet (1163) can be positioned perpendicular to the third direction.

[0095] The first magnet (1161) may overlap with the first coil (C1) in the second direction, the second magnet (1162) may overlap with the second coil (C2) in the second direction, and the third magnet (1163) may overlap with the third coil (C3) in the first direction. The first magnet (1161) and the second magnet (1162) may not overlap with the first to fourth ball seating portions (1131, 1132, 1133, 1134) in the second direction. Additionally, the third magnet (1163) may overlap with the center of the reflective surface (1143b) of the prism (1143) in the first direction. Through the interaction between the first magnet (1161) and the first coil (C1) and the interaction between the second magnet (1162) and the second coil (C1), the mover (1140) can rotate with respect to the first direction. Additionally, through the interaction between the third magnet (1163) and the third coil (C3), the mover (1140) can rotate with respect to the second direction. The first to third magnets (1161, 1162, 1163) may each include a neutral region positioned between two poles and two poles.

[0096] The fourth magnet (1164) may be a fixed magnet. The fourth magnet (1164) can fix the mover (1140) through interaction with the plate (1123). The fourth magnet (1164) may be placed adjacent to the plate (1164) placed in the sub-housing (1120). The fourth magnet (1164) may overlap with the plate (1123) in a third direction. The fourth magnet (1164) may exert an attractive force on the plate (1123). Accordingly, the mover (1140) may be pulled toward the sub-housing (1120), and the mover (1140) may be fixed together with the tilt carrier (1130). Additionally, the tilt carrier (1130) can be fixed between the mover (1140) and the sub-housing (1120) and can form a central axis of rotation.

[0097] The first to third magnet yokes (1161a, 1162a, 1163a) are each positioned between the magnet and the mover (1140) to fix the magnet to the mover (1140). The first magnet yoke (1161a) can fix the first magnet (1161) to the mover (1140), the second magnet yoke (1162a) can fix the second magnet (1162) to the mover (1140), and the third magnet yoke (1163a) can fix the third magnet (1163) to the mover (1140).

[0098] FIG. 26 is a perspective view of a mobile terminal with a camera module applied according to an embodiment.

[0099] Referring to FIG. 26, the mobile terminal of the embodiment may include a camera module (1000), a flash module (1510), and an autofocus device (1530) provided on the rear.

[0100] The camera module (1000) may include an image capturing function and an autofocus function. For example, the camera module (1000) may include an autofocus function using an image.

[0101] The camera module (1000) processes still image or video frame obtained by the image sensor in shooting mode or video call mode.

[0102] The processed image frame may be displayed on a designated display unit and stored in memory. A camera (not shown) may also be placed on the front of the mobile terminal body.

[0103] For example, the camera module (1000) may include a first camera module and a second camera module, and the first camera module may enable the implementation of AF or zoom functions along with OIS. Additionally, AF, zoom, and OIS functions may be performed by the second camera module. In this case, since the first camera module includes both the OIS actuator and the camera actuator described above, the camera module can be easily miniaturized by changing the light path.

[0104] The flash module (1510) may include a light-emitting element that emits light inside. The flash module (1010) may be operated by the operation of the camera of the mobile terminal or by the control of the user.

[0105] The autofocus device (1530) may include one of the packages of surface light-emitting laser elements as a light-emitting part.

[0106] The autofocus device (1530) may include an autofocus function using a laser. The autofocus device (1530) may be mainly used in conditions where the autofocus function using the image of the camera module (1000) is degraded, such as in a close distance of 10m or less or in a dark environment.

[0107] The autofocus device (1530) may include a light-emitting part comprising a vertical cavity surface-emitting laser (VCSEL) semiconductor device and a light-receiving part that converts light energy into electrical energy, such as a photodiode.

[0108] FIG. 27 is a perspective view of a vehicle with a camera module applied according to an embodiment.

[0109] For example, FIG. 27 is an exterior view of a vehicle equipped with a vehicle driving assistance device having a camera module applied according to an embodiment.

[0110] Referring to FIG. 27, the vehicle (700) of the embodiment may be equipped with wheels (13FL, 13FR) that rotate by a power source and a predetermined sensor. The sensor may be a camera sensor (2000), but is not limited thereto.

[0111] The camera sensor (2000) may be a camera sensor to which a camera module according to the embodiment is applied. The vehicle (700) of the embodiment may acquire image information through a camera sensor (2000) that captures a front image or a surrounding image, and may determine a situation where a lane is not identified using the image information and generate a virtual lane when it is not identified.

[0112] For example, a camera sensor (2000) captures the front of a vehicle (700) to obtain a front image, and a processor (not shown) can obtain image information by analyzing objects included in the front image.

[0113] For example, if objects such as a median strip, curb, or roadside tree corresponding to a lane, adjacent vehicle, driving obstruction, and indirect road marking are captured in an image captured by a camera sensor (2000), the processor can detect these objects and include them in the image information. At this time, the processor can obtain distance information with respect to the objects detected through the camera sensor (2000) to further supplement the image information.

[0114] The image information may be information about an object captured in the image. Such a camera sensor (2000) may include an image sensor and an image processing module.

[0115] The camera sensor (2000) can process still images or videos obtained by an image sensor (e.g., CMOS or CCD).

[0116] The image processing module can process still images or videos acquired through an image sensor to extract necessary information and transmit the extracted information to a processor.

[0117] At this time, the camera sensor (2000) may include a stereo camera to improve the measurement accuracy of the object and to obtain more information such as the distance between the vehicle (700) and the object, but is not limited thereto.

[0118] Although the invention has been described above with reference to embodiments, this is merely illustrative and does not limit the invention. Those skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments may be modified and implemented. Furthermore, differences related to such modifications and applications should be interpreted as being included within the scope of the invention as defined in the appended claims. Explanation of the symbols

[0119] 1000: Camera module 1100: 1st camera actuator 1200: Second camera actuator 1300: Circuit board

Claims

Claim 1 A camera actuator comprising: a housing; a sub-housing coupled to the housing; a mover disposed within the housing and having a prism disposed therein; and a tilt carrier disposed between the mover and the sub-housing, wherein the tilt carrier includes a first ball seating portion and a second ball seating portion facing the sub-housing, and a third ball seating portion and a fourth ball seating portion facing the mover, wherein the first ball seating portion and the second ball seating portion do not overlap in a first direction (Z-axis) and a second direction (X-axis) perpendicular to the first direction, wherein the first direction (Z-axis) is a direction perpendicular to the plane on which light from the prism is incident, and the second direction (X-axis) is a direction parallel to the plane on which light from the prism is emitted. Claim 2 In claim 1, the camera actuator in which the third ball seating portion and the fourth ball seating portion do not overlap in the first direction (Z-axis) and the second direction (X-axis). Claim 3 In paragraph 2, the camera actuator comprises a sub-housing including a fifth ball seating portion opposite the first ball seating portion and a sixth ball seating portion opposite the second ball seating portion. Claim 4 In paragraph 3, the mover is a camera actuator comprising a seventh ball seating portion opposite the third ball seating portion and an eighth ball seating portion opposite the fourth ball seating portion. Claim 5 A camera actuator according to claim 4, comprising a first ball disposed between the first ball mounting portion and the fifth ball mounting portion, a second ball disposed between the second ball mounting portion and the sixth ball mounting portion, a third ball disposed between the third ball mounting portion and the seventh ball mounting portion, and a fourth ball disposed between the fourth ball mounting portion and the eighth ball mounting portion. Claim 6 In claim 5, the tilt carrier and the mover are camera actuators that rotate about a first axis which is the extension of the center of the first ball and the center of the second ball. Claim 7 In claim 6, the mover is a camera actuator that rotates about a second axis, which is the extension of the center of the third ball and the center of the fourth ball. Claim 8 In claim 7, the intersection point of the first axis and the second axis overlaps with the center of the reflective surface that reflects the light of the prism, a camera actuator. Claim 9 A camera actuator according to claim 1, wherein the distance between the first ball mounting portion and the second ball mounting portion is greater than the distance between the first ball mounting portion and the third ball mounting portion or the distance between the first ball mounting portion and the fourth ball mounting portion. Claim 10 A camera actuator according to claim 1, wherein the first ball mounting portion and the third ball mounting portion overlap with the prism in the second direction (X-axis), and the second ball mounting portion and the fourth ball mounting portion do not overlap with the prism in the second direction (X-axis). Claim 11 A camera actuator according to claim 10, wherein the distance between the first ball mounting portion and the third ball mounting portion is greater than the distance between the first ball mounting portion and the fourth ball mounting portion. Claim 12 A camera actuator according to claim 1, comprising a first to third magnet disposed in the mover, wherein the first magnet and the second magnet are spaced apart in the second direction (X-axis). Claim 13 In paragraph 12, the third magnet is a camera actuator that overlaps with the center of the reflective surface reflecting the light of the prism in the first direction (Z-axis). Claim 14 In claim 12, the first magnet and the second magnet are a camera actuator that does not overlap with the first to fourth ball seating portions in the second direction (X-axis). Claim 15 In claim 1, the tilt carrier includes a support member comprising at least one bending structure, and the first to fourth ball seating members are spaced apart from each other and are camera actuators. Claim 16 A camera actuator according to claim 1, wherein the first ball seating portion and the third ball seating portion include four inclined surfaces, and the second ball seating portion and the fourth ball seating portion include two inclined surfaces.

Images