Camera actuator and camera module including the same

Abstract

In one embodiment, a camera actuator is disclosed, the camera actuator comprising: a housing; the first lens assembly and the second lens assembly move in the optical axis direction on the inner side of the shell; and a magnet unit disposed on the first lens assembly and the second lens assembly, in which the magnet unit includes a first magnet and a second magnet disposed at each of both end portions of the first magnet in an optical axis direction, a positive electrode of the first magnet being disposed in a first direction perpendicular to the optical axis direction, and a negative electrode of the second magnet being disposed in a second direction perpendicular to the optical axis direction. A positive electrode of the second magnet is arranged in the optical axis direction, and a pole arranged at an outer side portion of the first magnet is the same as a pole of the second magnet adjacent to the first magnet.

Description

Camera actuator and camera module including the camera actuator Technical Field

[0001] Various embodiments relate to a camera actuator and a camera module including the camera actuator. Background Technology

[0002] A camera is a device that captures images or videos of objects and is mounted on portable devices, drones, vehicles, etc. To improve image quality, a camera module may have: image stabilization (IS) function, which corrects or prevents image shake caused by user movement; autofocus (AF) function, which automatically adjusts the gap between the image sensor and the lens to align the lens's focal length; and zoom function, which uses a zoom lens to increase or decrease the magnification of distant objects and capture them.

[0003] When the lens assembly is driven in a camera actuator, the magnetic interference can change as the distance between the driving magnets varies. This can potentially cause problems affecting the driving performance of the camera actuator. Typically, the magnetic interference applied to the magnets fluctuates significantly depending on their position as they move through the driving lens assembly. Reducing the size of the magnets or attaching a magnetic shielding yoke to reduce magnetic interference may lead to performance degradation, such as a decrease in driving force. Technical problems of the invention

[0004] One embodiment provides a camera actuator with increased driving force and adhesive force.

[0005] Furthermore, this embodiment provides a camera actuator that can reduce magnetic interference during operation.

[0006] In addition, this embodiment provides a camera actuator that can reduce magnetic interference fluctuations during operation.

[0007] The problems to be solved in these embodiments are not limited thereto, and may include, in fact, the purposes or effects that can be understood from the solutions or embodiments of the problems described below. Technical Solutions

[0008] A camera actuator according to an embodiment includes: a housing; a first lens assembly and a second lens assembly, the first lens assembly and the second lens assembly being movable in the housing along an optical axis; and a magnet portion disposed on the first lens assembly and the second lens assembly, wherein the magnet portion includes a first magnet and a second magnet, the second magnet being disposed at each of two ends of the first magnet in the optical axis direction, two poles of the first magnet being disposed in a first direction perpendicular to the optical axis direction, two poles of the second magnet being disposed in the optical axis direction, and the pole disposed on the outer side of the first magnet being the same as the adjacent poles of the second magnet and the first magnet.

[0009] The magnet portion may include a first magnet portion disposed on a first lens assembly and a second magnet portion disposed on a second lens assembly.

[0010] The two poles of the first magnet in the first magnet section and the first magnet in the second magnet section can be set in opposite directions.

[0011] The width of the first magnet in the optical axis direction can be greater than the width of the second magnet in the optical axis direction.

[0012] The width of the first magnet in the optical axis direction can be greater than the width of the second magnet in the first direction.

[0013] The width of the first magnet and the second magnet in the second direction can be greater than the width of the first magnet and the second magnet in the first direction, and the second direction can be a direction perpendicular to the optical axis direction and the first direction.

[0014] The width of the first magnet in the first direction can be the same as the width of the second magnet in the first direction.

[0015] The camera actuator according to the embodiment may further include: a substrate disposed on the outer side of the housing; and a coil portion disposed on the substrate and including a plurality of coils, wherein the width of the first magnet in the optical axis direction may be smaller than the width of the outer side of the coil and larger than the width of the inner side of the coil.

[0016] The camera actuator according to the embodiment may further include: a housing cover disposed on a housing; and a first stop portion and a second stop portion disposed on the housing cover and the second stop portion disposed on the housing.

[0017] The first stop portion may include a first stop and a second stop spaced apart in a first direction, and the second stop portion may include a third stop and a fourth stop spaced apart in a first direction, and the first to fourth stops may not overlap with the second magnet portion in the first direction.

[0018] The second stop portion may further include a fifth stop portion disposed between the third stop portion and the fourth stop portion along the first direction, and the fifth stop portion may overlap with the magnet portion in the first direction.

[0019] The camera actuator according to the embodiment may further include a magnetic yoke disposed between the first lens assembly and the second lens assembly and the magnet portion.

[0020] The magnetic yoke may include a first magnetic yoke disposed between the first lens assembly and the first magnet portion, and a second magnetic yoke disposed between the second lens assembly and the second magnet portion.

[0021] The magnetic yoke may include a first to a fourth protrusion that protrudes toward and contacts the magnet portion, and a fifth and a sixth protrusion that protrudes toward and contacts the first or second lens assembly.

[0022] The first protrusion, the third protrusion, the second protrusion, and the fourth protrusion can each be spaced apart in the optical axis direction, the fifth protrusion can be disposed between the first protrusion and the third protrusion, and the sixth protrusion can be disposed between the second protrusion and the fourth protrusion.

[0023] The width of the first to fourth protrusions in the optical axis direction can be greater than the width of the fifth and sixth protrusions in the optical axis direction.

[0024] The fifth protrusion may be configured to be spaced apart from the first protrusion and the third protrusion by a first distance, and the first distance may be greater than the width of the first protrusion and the third protrusion in the optical axis direction. The sixth protrusion may be configured to be spaced apart from the second protrusion and the fourth protrusion by a first distance, and the first distance may be greater than the width of the second protrusion and the fourth protrusion in the optical axis direction.

[0025] A camera actuator according to an embodiment includes: a housing; a first lens assembly and a second lens assembly, the first lens assembly and the second lens assembly being movable within the housing along an optical axis; a housing cover disposed on the housing; and a magnet portion including a first magnet and a second magnet, wherein the first magnet is disposed on the first lens assembly and the second lens assembly, the second magnet is spaced apart from the first magnet in the optical axis direction and disposed on the housing and the housing cover, two poles of the first magnet are disposed in a first direction perpendicular to the optical axis direction, two poles of the second magnet are disposed in the optical axis direction, and the pole disposed on the outer side of the first magnet is the same as the adjacent pole of the second magnet and the first magnet.

[0026] The camera actuator according to the embodiment may further include a first stop portion disposed on the housing cover and a second stop portion disposed on the housing, wherein the first stop portion may include a first stop and a second stop spaced apart in a first direction, and the second stop portion may include a third stop and a fourth stop spaced apart in the first direction, the first stop and the third stop may be disposed on the same axis along the optical axis direction, and the second stop and the fourth stop may be disposed on the same axis along the optical axis direction.

[0027] The magnet portion may include a first magnet portion disposed on a first lens assembly and a second magnet portion disposed on a second lens assembly. The spacing between the second magnets of the first magnet portion in the optical axis direction may be greater than the spacing between the first stop member and the third stop member in the optical axis direction, and the spacing between the second magnets of the second magnet portion in the optical axis direction may be greater than the spacing between the second stop member and the fourth stop member in the optical axis direction.

[0028] The spacing between the second magnets in the first magnet section along the optical axis can be greater than the spacing between the second magnets in the second magnet section along the optical axis.

[0029] The housing cover may include a first groove and a second groove provided with a second magnet, and the housing may include a third groove and a fourth groove provided with a second magnet. The first groove to the fourth groove may overlap with the magnet portion in the optical axis direction, but may not overlap with the first stop and the second stop in the optical axis direction.

[0030] A camera module according to an embodiment includes: a camera actuator; an optical image stabilization (OIS) actuator; a lens barrel disposed between the camera actuator and the OIS actuator; a circuit board including an image sensor; and a cover disposed on the outer side of the camera actuator and the OIS actuator. Beneficial Effects

[0031] According to the implementation method, a camera actuator with increased driving force and adhesion force can be realized.

[0032] In addition, a camera actuator that can reduce magnetic interference during operation can be realized.

[0033] In addition, a camera actuator that can reduce magnetic interference fluctuations during operation can be realized.

[0034] The various useful advantages and effects of the present invention are not limited to the foregoing, and can be more readily understood in the process of describing specific embodiments of the invention. Attached Figure Description

[0035] Figure 1 is a perspective view of the camera module according to an embodiment.

[0036] Figure 2 is an exploded perspective view of the camera module according to an embodiment.

[0037] Figure 3 is a cross-sectional view taken along line AA' in Figure 1.

[0038] Figure 4 is a perspective view of a camera actuator according to an embodiment.

[0039] Figure 5 is a cross-sectional view taken along line BB' in Figure 4.

[0040] Figure 6 is a perspective view of the first magnet portion according to an embodiment.

[0041] Figure 7 is a left-side view of the first magnet portion according to an embodiment.

[0042] Figure 8 is a right-side view of the first magnet portion according to an embodiment.

[0043] Figure 9 is a front view of the first magnet portion according to an embodiment.

[0044] Figure 10 is a view illustrating the arrangement of the first magnet portion and the coil portion according to an embodiment.

[0045] Figure 11 is a perspective view illustrating the arrangement of the first magnet portion, the first yoke, and the coil portion according to an embodiment.

[0046] Figure 12 is a front view illustrating the arrangement of the first magnet portion, the first yoke, and the coil portion according to an embodiment.

[0047] Figure 13 is a left-side view illustrating the arrangement of the first magnet portion, the first yoke, and the coil portion according to an embodiment.

[0048] Figure 14 is a perspective view of the magnetic yoke according to an embodiment.

[0049] Figure 15 is a front view of the magnetic yoke according to an embodiment.

[0050] Figure 16 is a perspective view of a magnetic yoke according to another embodiment.

[0051] Figure 17 is a front view of a magnetic yoke according to another embodiment.

[0052] Figure 18 is a cross-sectional view of a camera actuator according to another embodiment.

[0053] Figure 19 is a perspective view of a mobile terminal with a camera module according to an embodiment.

[0054] Figure 20 is a perspective view of a vehicle equipped with a camera module according to an embodiment. Detailed Implementation

[0055] In the following, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0056] However, the spirit of the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and one or more of the components in these embodiments can be selectively connected or substituted and used within the scope of the spirit of the present invention.

[0057] In addition, unless explicitly and specifically defined and described, the terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that can be normally understood by those skilled in the art, and commonly used terms, such as those defined in dictionaries, may be interpreted in consideration of their contextual meaning in the relevant art.

[0058] Furthermore, the terminology used in the embodiments of the present invention is intended to describe the embodiments and not to limit the invention.

[0059] In this specification, unless otherwise specified in the phrase, the singular may also include the plural, and when the singular is described as “at least one (one or more) of A, B and C”, the singular may include one or more of all combinations that can be combined with A, B and C.

[0060] Furthermore, when describing components of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used.

[0061] These terms are intended only to distinguish one component from another, and not to restrict the nature, order, sequence, etc. of the components.

[0062] Furthermore, when a component is described as “connected,” “linked,” or “attached” to another component, it may include not only cases where the component is directly connected, linked, or attached to another component, but also cases where the component is “connected,” “linked,” or “attached” through other components disposed between the component and the other component.

[0063] Furthermore, when a component is described as being formed or disposed "above or below" another component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or disposed between the two components. Additionally, when expressed as "above" or "below," it can include not only the meaning of an upward direction based on a component, but also the meaning of a downward direction based on a component.

[0064] Figure 1 is a perspective view of the camera module according to an embodiment, Figure 2 is an exploded perspective view of the camera module according to an embodiment, and Figure 3 is a cross-sectional view taken along line AA' in Figure 1.

[0065] Referring to Figures 1 and 2, the camera module 1 according to the embodiment may consist of a cover CV, an optical image stabilization (OIS) actuator 100, a camera actuator 1000, and a circuit board 200.

[0066] The cover CV can cover the OIS actuator 100 and / or the camera actuator 1000. The cover CV can improve the connection force between the OIS actuator 100 and the camera actuator 1000.

[0067] Furthermore, the cover CV can be made of a material that blocks electromagnetic waves. Therefore, the OIS actuator 100 and camera actuator 1000 in the cover CV can be easily protected.

[0068] In one embodiment, the OIS actuator 100 can alter the optical path. In another embodiment, the OIS actuator 100 can vertically alter the optical path via internal optical components (e.g., mirrors or prisms). Using this configuration, even when the thickness of the mobile terminal is reduced, a lens configuration with a size larger than the thickness of the mobile terminal can be provided in the mobile terminal to perform magnification, autofocus (AF), and optical image stabilization (OIS) functions by altering the optical path.

[0069] The OIS actuator 100 can change the optical path from a second direction to a third direction.

[0070] Additionally, the OIS actuator 100 may include a lens disposed in a predetermined lens barrel (not shown). For example, the lens may include a fixed-focus lens. A fixed-focus lens may also be referred to as a "single-focal-length lens" or a "fixed-focus lens".

[0071] The camera actuator 1000 can be located at the rear end of the OIS actuator 100. The camera actuator 1000 can be coupled to the OIS actuator 100. Furthermore, the camera actuator 1000 and the OIS actuator 100 can be coupled in various ways.

[0072] Alternatively, the camera actuator 1000 may be a zoom actuator or an autofocus (AF) actuator. For example, the camera actuator 1000 may support one or more lenses and move the lenses in response to a control signal from a predetermined controller to perform an autofocus function or a zoom function.

[0073] The circuit board 200 can be located at the rear end of the camera actuator 1000. The circuit board 200 can be electrically connected to the camera actuator 1000 and the OIS actuator 100. In addition, multiple circuit boards 200 can be provided.

[0074] The circuit board 200 can be connected to the housing of the camera actuator 1000 and is equipped with an image sensor. In addition, a base unit including a filter can be mounted on the circuit board 200.

[0075] The camera module according to the embodiment may consist of one or more camera modules. For example, multiple camera modules may include a first camera module and a second camera module. Furthermore, as described above, the camera module can be used interchangeably with "camera device," "camera apparatus," "imaging device," "imaging module," "imaging instrument," etc.

[0076] Furthermore, the first camera module may include one or more actuators. For example, the first camera module may include an OIS actuator 100 and a camera actuator 1000.

[0077] Furthermore, the second camera module can be housed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving the lens unit. The actuator can be a voice coil motor, a micro-actuator, a silicon actuator, etc., and can be applied in various ways, such as capacitive, thermal, dual piezoelectric wafer, and electrostatic methods, but is not limited to these methods. In this specification, the camera actuator may be referred to as an actuator, etc. Additionally, a camera module composed of multiple camera modules can be installed in various electronic devices such as mobile terminals.

[0078] Referring to FIG3, the camera module according to the embodiment may include an OIS actuator 100 that performs OIS function and a camera actuator 1000 that performs zoom function and AF function.

[0079] Light can enter the camera module through an opening in the upper surface of the OIS actuator 100. That is, light can enter the OIS actuator 100 along the optical axis (e.g., the Y-axis), and the optical path can be changed to a vertical direction (e.g., the Z-axis) by optical components. Furthermore, light can pass through the camera actuator 1000 and can be incident on an image sensor located at one end of the camera actuator 1000 (path).

[0080] In this specification, the bottom surface refers to a side portion in the first direction. Furthermore, the first direction is the X-axis direction in the accompanying drawings, and can be used interchangeably with the second axial direction, etc. The second direction is the Y-axis direction in the accompanying drawings, and can be used interchangeably with the first axial direction, etc. The second direction is perpendicular to the first direction. Furthermore, the third direction is the Z-axis direction in the accompanying drawings, and can be used interchangeably with the third axial direction, etc. The third direction is perpendicular to both the first and second directions. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are directions perpendicular to the optical axis. Furthermore, in the following description of the camera actuator 1000, the optical axis direction corresponds to the optical path and is the third direction (Z-axis direction), and the following description will be given based on this.

[0081] Furthermore, utilizing this configuration, the camera module according to the embodiment can improve the spatial constraints of the OIS actuator and the camera actuator by changing the optical path. That is, the camera module according to the embodiment can extend the optical path in response to changes in the optical path while minimizing the thickness of the camera module. Moreover, it should be understood that the camera actuator can also provide a wide range of magnifications by controlling the focal point, etc., in the extended optical path.

[0082] Furthermore, the camera module according to the embodiment can achieve OIS by controlling the optical path through the OIS actuator, and thus, the occurrence of eccentricity or tilt can be minimized and optimal optical characteristics can be achieved.

[0083] Furthermore, the camera actuator 1000 may include an optical system and a lens driving unit. For example, at least one or more of a first lens assembly, a second lens assembly, a third lens assembly, and a guide pin may be provided in the camera actuator 1000.

[0084] In addition, the camera actuator 1000 may include a coil and a magnet to perform high-magnification zoom.

[0085] For example, the first and second lens assemblies can be movable lenses moved by coils, magnets, and guide pins, and the third lens assembly (not shown) can be a fixed lens, but the invention is not limited thereto. For example, the third lens assembly can function as a focuser that forms an optical image at a specific location, and the second lens assembly can function as a transducer that reformulates the image formed in the third lens assembly (as a focuser) at different locations. Simultaneously, the second lens assembly can have a significant magnification change due to significant variations in distance to the object or imaging distance, and the second lens assembly (as a transducer) can play an important role in changes in focal length or magnification of the optical system. Furthermore, the imaging point formed in the second lens assembly (as a transducer) can vary slightly depending on its position. Therefore, the first lens assembly can perform position compensation for the image formed by the transducer. For example, the first lens assembly can function as a compensator to accurately form the imaging point in the second lens assembly (as a transducer) at the actual image sensor location. For example, the first and second lens assemblies can be driven by electromagnetic forces generated by the interaction of coils and magnets.

[0086] Figure 4 is a perspective view of the camera actuator according to an embodiment, and Figure 5 is a cross-sectional view taken along line BB' in Figure 4.

[0087] Referring to Figures 4 and 5, the camera actuator 1000 according to the embodiment may include a housing 1100, a first lens assembly 1200, a second lens assembly 1300, a magnet portion 1400, a substrate 1500, a housing cover 1600, a coil portion 1700, a magnetic yoke 1800, and a stop portion S.

[0088] Referring to Figures 4 and 5, the camera actuator 1000 according to the embodiment may include a housing 1100.

[0089] The housing 1100 may form the outer wall of the camera actuator 1000. A housing cover 1600 may be disposed on one surface of the housing 1100. A first lens assembly 1200, a second lens assembly 1300, a magnet portion 1400, a coil portion 1700, a magnetic yoke 1800, and a stop portion S may be included in the housing 1100. The magnet portion 1400, the coil portion 1700, and the magnetic yoke 1800 may be disposed on a side surface of the housing 1100 parallel to the optical axis. The surface of the housing 1100 perpendicular to the optical axis may include an opening. A substrate 1500 may be disposed on the outer side of the housing 1100.

[0090] According to an embodiment, the camera actuator 1000 may include a first lens assembly 1200 and a second lens assembly 1300.

[0091] The first lens assembly 1200 and the second lens assembly 1300 can be movable lenses that are moved by coils, magnets, and guide pins. The second lens assembly 1300 can perform a transducer function to re-form the focused and formed image at another position. Simultaneously, the second lens assembly 1300 can have a significant magnification change due to significant changes in distance to the object or imaging distance, and as a transducer, the second lens assembly 1300 can play an important role in changes in focal length or magnification of the optical system. Furthermore, the imaging point formed in the second lens assembly 1300 as a transducer can vary slightly depending on its position. Therefore, the first lens assembly 1200 can perform a position compensation function for the image formed by the transducer. For example, the first lens assembly 1200 can be used as a compensator to ensure that the imaging point formed in the second lens assembly 1300 as a transducer is accurately formed at the actual image sensor position. Furthermore, the first lens assembly 1200 and the second lens assembly 1300 can be driven using electromagnetic force generated by the interaction of the coil and the magnet.

[0092] The first lens assembly 1200 and the second lens assembly 1300 can be disposed within the housing 1100. The first lens assembly 1200 and the second lens assembly 1300 can move within the housing 1100 along the optical axis via the magnet portion 1400, the yoke 1800, and the coil portion 1700. The first lens assembly 1200 and the second lens assembly 1300 can be spaced apart from each other along the optical axis. The first lens assembly 1200 and the second lens assembly 1300 can partially overlap with the stop portion S in the optical axis direction. The first lens assembly 1200 and the second lens assembly 1300 can partially overlap with the housing cover 1600 in the optical axis direction.

[0093] The first lens assembly 1200 can be driven by the first magnet portion 1410 and the first yoke 1810. The first lens assembly 1200 can be connected to the first yoke 1810. Since the first lens assembly 1200 is connected to the first yoke 1810 and the first magnet portion 1410 is connected to the first yoke 1810, the first magnet portion 1410 can be fixed to the first lens assembly 1200. The first lens assembly 1200 can overlap with the coil portion 1700 in a first direction perpendicular to the optical axis. The first lens assembly 1200 can overlap with the first stop member S1, the third stop member S3, and the fifth stop member S5 in the optical axis direction.

[0094] The second lens assembly 1300 can be driven by the second magnet portion 1420 and the second yoke 1820. The second lens assembly 1300 can be coupled to the second yoke 1820. Since the second lens assembly 1300 is coupled to the second yoke 1820 and the second magnet portion 1420 is coupled to the second yoke 1820, the second magnet portion 1420 can be fixed to the second lens assembly 1300. The second lens assembly 1300 can overlap with the coil portion 1700 in a first direction perpendicular to the optical axis. The second lens assembly 1300 can overlap with the second stop S2 and the fourth stop S4 in the optical axis direction.

[0095] The camera actuator 1000 according to the embodiment may include a substrate 1500.

[0096] The substrate 1500 can be disposed within the housing 1100. The substrate 1500 can be disposed on the outer side of the housing 1100. A driver integrated circuit (IC) (not shown) and a coil portion 1700 can be disposed on the substrate 1500. The driver IC and the coil portion 1700 can be disposed inside the substrate 1500. The substrate 1500 can fix the driver IC and the coil portion 1700. The substrate 1500 can transmit optical signal information from the driver IC to the coil portion 1700.

[0097] The substrate 1500 may include a first sub-substrate 1510, a second sub-substrate 1520 and a third sub-substrate 1530.

[0098] The first sub-substrate 1510 can be disposed on the side surface of the housing 1100. The first sub-substrate 1510 can be disposed along the optical axis and a second direction. The second sub-substrate 1520 can be disposed on the upper surface of the housing. The second sub-substrate 1520 can be disposed along the optical axis and a first direction. The third sub-substrate 1530 can be disposed on the side surface of the housing 1100. The third sub-substrate 1530 can be disposed along the optical axis and a second direction. The first sub-substrate 1510 and the third sub-substrate 1530 can be disposed parallel to each other. The first sub-substrate 1510 and the third sub-substrate 1530 can be disposed perpendicular to the second sub-substrate 1520. The coil portion 1700 can be disposed on the first sub-substrate 1510 and the third sub-substrate 1530.

[0099] The camera actuator 1000 according to the embodiment may include a housing cover 1600.

[0100] The housing cover 1600 can be fixedly disposed on one surface of the housing 1100. The housing cover 1600 can overlap with the housing 1100 in the optical axis direction. A first stop portion Sa can be disposed on the housing cover 1600. The housing cover 1600 can increase the adhesive area between the OIS actuator and the camera actuator 1000 to enhance adhesion. The housing cover 1600 can partially overlap with the first lens assembly 1200 and the second lens assembly 1300 in the optical axis direction.

[0101] The camera actuator 1000 according to the embodiment may include a stop portion S.

[0102] A stop portion S may be disposed within the housing 1100. The stop portion S is disposed within the housing 1100 to prevent the first lens assembly 1200 and the second lens assembly 1300 from colliding with the inner side of the housing 1100. The stop portion S may contact the first lens assembly 1200 and the second lens assembly 1300 to absorb impact. The stop portion S may include foam. The shape of the stop portion S is not limited. For example, the stop portion S may have a cuboid shape.

[0103] The stop portion S may include a first stop portion Sa and a second stop portion Sb. The first stop portion Sa may be disposed on the housing cover 1600. The first stop portion Sa may be disposed on a surface of the housing cover 1600 facing the inner side of the housing 1100. The first stop portion Sa may be disposed on the housing cover 1600 to overlap with the first lens assembly 1200 or the second lens assembly 1300. The second stop portion Sa may be disposed on a surface of the inner side of the housing 1100. The second stop portion Sb may be disposed on a surface of the inner side of the housing 1100 to overlap with the first lens assembly 1200 or the second lens assembly 1300 in the optical axis direction. The first stop portion and the second stop portion may be configured to be spaced apart from each other in opposite directions in the optical axis direction based on the first lens assembly 1200 and the second lens assembly 1300.

[0104] The first stop portion Sa may include a first stop S1 and a second stop S2. The first stop S1 and the second stop S2 may be spaced apart from each other in a first direction. The first stop S1 may overlap with the first lens assembly 1200 in the optical axis direction. The second stop S2 may overlap with the second lens assembly 1300 in the optical axis direction. The first stop S1 may contact the lower end of the first lens assembly 1200. The second stop S2 may contact the lower end of the second lens assembly 1300.

[0105] The second stop portion Sb may include a third stop S3, a fourth stop S4, and a fifth stop S5. The third stop S3, fourth stop S4, and fifth stop S5 may be spaced apart from each other in a first direction. The third stop S3 and fifth stop S5 may overlap with the first lens assembly 1200 in the optical axis direction. The fourth stop S4 may overlap with the second lens assembly 1300 in the optical axis direction. The third stop S3, fourth stop S4, and fifth stop S5 may be positioned at different heights within the housing 1100 along the optical axis direction. The fifth stop S5 may be positioned between the third stop S3 and the fourth stop S4 in the first direction. The third stop S3 may contact the upper end of the first lens assembly 1200. The fourth stop S4 may contact the upper end of the second lens assembly 1300.

[0106] The first stop S1, the second stop S2, the third stop S3, and the fourth stop S4 may not overlap with the second magnet portion 1420 in the first direction. When the second lens assembly 1300 moves to the upper end of the housing 1100 and contacts the fourth stop S4, the second magnet portion 1420 may not overlap with the third stop S3 and the fourth stop S4 in the first direction. Furthermore, when the second lens assembly 1300 moves to the lower end of the housing 1100 and contacts the second stop S2, the second magnet portion 1420 may not overlap with the first stop S1 and the second stop S2 in the first direction.

[0107] The fifth stop S5 can overlap with the magnet portion 1420 in the first direction. When the first lens assembly 1200 and the second lens assembly 1300 move to the upper end of the housing 1100 and come into contact with the third stop S3 and the fourth stop S4, the first magnet portion 1410 and the second magnet portion 1420 can overlap with the fifth stop S5 in the first direction.

[0108] Figure 6 is a perspective view of the first magnet portion according to an embodiment, Figure 7 is a left side view of the first magnet portion according to an embodiment, Figure 8 is a right side view of the first magnet portion according to an embodiment, and Figure 9 is a front view of the first magnet portion according to an embodiment.

[0109] Referring to Figures 5 to 9, the camera actuator 1000 according to the embodiment may include a magnet portion 1400.

[0110] A magnet portion 1400 may be disposed on the first lens assembly 1200 and the second lens assembly 1300. The magnet portion 1400 may be disposed on the first lens assembly 1200 and the second lens assembly 1300 to allow movement of the first lens assembly 1200 and the second lens assembly 1300. The magnet portion 1400 may receive magnetic force from the coil portion 1700 to allow movement of the first lens assembly 1200 and the second lens assembly 1300. The magnet portion 1400 may be disposed on the side surface of the first lens assembly 1200 and the second lens assembly 1300 along a first direction. The magnet portion 1400 may be disposed between the first lens assembly 1200 and the second lens assembly 1300 and the coil portion 1700. The magnet portion 1400 may overlap with the coil portion 1700 in the first direction. The magnet portion 1400 may be fixed to the first lens assembly 1200 and the second lens assembly 1300 by a magnetic yoke 1800. Since the magnetic yoke 1800 is disposed between the magnet portion 1400 and the first lens assembly 1200 and the second lens assembly 1300, the magnetic yoke 1800 can fix the magnet portion 1400 to the first lens assembly 1200 and the second lens assembly 1300.

[0111] The magnet portion 1400 may include a first magnet portion 1410 disposed on the first lens assembly 1200 and a second magnet portion 1420 disposed on the second lens assembly 1300.

[0112] The first magnet portion 1410 can be disposed on the first lens assembly 1200. The first magnet portion 1410 can move the first lens assembly 1200. The first magnet portion 1410 can be disposed on the side surface of the first lens assembly 1200 along a first direction. The first magnet portion 1410 can be disposed between the first lens assembly 1200 and the coil portion 1700. The first magnet portion 1410 can be fixed to the first lens assembly 1200 by a first magnetic yoke 1810. Since the first magnetic yoke 1810 is disposed between the first magnet portion 1410 and the first lens assembly 1200, the first magnetic yoke 1810 can fix the first magnet portion 1410 to the first lens assembly 1200. The first magnet portion 1410 may not overlap with the first stop member S1, the second stop member S2, and the third stop member S3 in the first direction.

[0113] The second magnet portion 1420 can be disposed on the second lens assembly 1300. The second magnet portion 1420 can move the second lens assembly 1300. The second magnet portion 1420 can be disposed on the side surface of the second lens assembly 1300 along a first direction. The second magnet portion 1420 can be disposed between the second lens assembly 1300 and the coil portion 1700. The second magnet portion 1420 can be fixed to the second lens assembly 1300 by a second magnetic yoke 1820. Since the second magnetic yoke 1820 is disposed between the second magnet portion 1420 and the second lens assembly 1300, the second magnetic yoke 1820 can fix the second magnet portion 1420 to the second lens assembly 1300. The second magnet portion 1400 may not overlap with the first stop member S1, the second stop member S2, the third stop member S3, and the fourth stop member S4 in the first direction.

[0114] The magnet portion 1400 may include first magnets 1411 and 1421 and second magnets 1412 and 1422 disposed at two ends of the first magnets 1411 and 1421 in the direction of the optical axis.

[0115] The magnet portion 1400 may include first magnets 1411 and 1421 and second magnets 1412 and 1422. The first magnet portion 1410 and the second magnet portion 1420 may each include first magnets 1411 and 1421 and second magnets 1412 and 1422. The first magnets 1411 and 1421 and the second magnets 1412 and 1422 may be magnets comprising two poles. The first magnets 1411 and 1421 and the second magnets 1412 and 1422 may include a first pole and a second pole different from the first pole. For example, the first pole may be an N pole, and the second pole may be an S pole. The shapes of the first magnets 1411 and 1421 and the second magnets 1412 and 1422 are not limited. For example, the first magnets 1411 and 1421 and the second magnets 1412 and 1422 may have a cuboid shape.

[0116] The two poles of the first magnets 1411 and 1421 can be arranged along a first direction perpendicular to the optical axis. One pole of the first magnets 1411 and 1421 can be spaced apart from the yoke 1800, and the other pole of the first magnets 1411 and 1421 can be adjacent to the yoke 1800. One pole of the first magnets 1411 and 1421 can be adjacent to the coil portion 1700, and the other pole of the first magnets 1411 and 1421 can be adjacent to the first lens assembly 1200 and the second lens assembly 1300. For example, the first pole of the first magnets 1411 and 1421 can be adjacent to the coil portion 1700, and the second pole of the first magnets 1411 and 1421 can be adjacent to the first lens assembly 1200 and the second lens assembly 1300.

[0117] The two poles of the first magnet 1411 of the first magnet portion 1410 and the first magnet 1421 of the second magnet portion 1420 can be arranged in opposite directions. Since the first magnet 1411 of the first magnet portion 1410 is disposed on the side surface of the first lens assembly 1200, and the first magnet 1421 of the second magnet portion 1420 is disposed on the side surface of the second lens assembly 1300, the first magnets 1411 and 1421 can be spaced apart in opposite directions along a first direction based on the first lens assembly 1200 and the second lens assembly 1300. For example, the first pole of the first magnet 1411 of the first magnet portion 1410 can be disposed adjacent to the coil portion 1700, and the second pole of the first magnet 1411 can be disposed adjacent to the first lens assembly 1200. Similarly, the first pole of the first magnet 1421 of the second magnet portion 1420 can be disposed adjacent to the coil portion 1700, and the second pole can be disposed adjacent to the second lens assembly 1300. The two poles of the first magnet 1411 of the first magnet portion 1410 and the first magnet 1421 of the second magnet portion 1420 can be configured symmetrically about the optical axis. For example, the first pole of the first magnet 1411 of the first magnet portion 1410 and the first pole of the first magnet 1421 of the second magnet portion 1420 can be configured facing the outer side of the housing 1100, and the second pole of the first magnet 1411 of the first magnet portion 1410 and the second pole of the first magnet 1421 of the second magnet portion 1420 can be configured facing the inner side of the housing 1100.

[0118] Second magnets 1412 and 1422 can be disposed at two ends of the first magnets 1411 and 1421 along the optical axis. The two poles of the second magnets 1412 and 1422 can be arranged along the optical axis. The second magnets 1412 and 1422 can be disposed at two ends of the first magnets 1411 and 1421 about the optical axis. The first magnet portion 1410 and the second magnet portion 1420 can each include two second magnets 1412 and 1422. The two poles of the second magnets 1412 and 1422 can be arranged along the optical axis. The direction of the two poles of the second magnets 1412 and 1422 can be set perpendicular to the direction of the two poles of the first magnets 1411 and 1421. The directions of the two poles of the second magnets 1412 and 1422 disposed at the two ends of the first magnets 1411 and 1421 can be opposite to each other. One pole of the second magnets 1412 and 1422 can be arranged adjacent to the first magnets 1411 and 1421, and the other pole of the second magnets 1412 and 1422 can be spaced apart so as not to be adjacent to the first magnets 1411 and 1421. For example, the first pole of the second magnets 1412 and 1422 can be arranged adjacent to the first magnets 1411 and 1421, and the second pole of the second magnets 1412 and 1422 can be spaced apart so as not to be adjacent to the first magnets 1411 and 1421.

[0119] The poles located on the outer sides of the first magnets 1411 and 1421 can be the same as the poles of the second magnets 1412 and 1422 that are adjacent to the first magnets 1411 and 1421.

[0120] The poles of the outer portions (outer portions can refer to the outward direction based on the housing) of the first magnets 1411 and 1421 in a first direction can be the same as the poles of the second magnets 1412 and 1422 adjacent to the first magnets 1411 and 1421. For example, when the first poles of the first magnets 1411 and 1421 are provided on the outer portions, the first poles of the second magnets 1412 and 1422 can be provided in a direction adjacent to the first magnets 1411 and 1421. Furthermore, when the second poles of the first magnets 1411 and 1421 are provided on the inner portions, the second poles of the second magnets 1412 and 1422 can be provided in a direction spaced apart from the first magnets 1411 and 1421, which is a direction not adjacent to the first magnets 1411 and 1421. When the poles on the outer sides of the first magnets 1411 and 1421 are configured to be the same as the poles of the second magnets 1412 and 1422 adjacent to the first magnets 1411 and 1421, the strength of the magnetic force can be reduced by configuring the driving magnet of the camera actuator 1000 as a Halbach array to weaken the magnetic field between the first magnet portion 1410 and the second magnet portion 1420. By reducing the strength of the magnetic force between the first magnet portion 1410 and the second magnet portion 1420, magnetic interference during lens assembly movement can be minimized, and therefore, the driving force and adhesion of the lens assembly can be increased.

[0121] Referring to Figures 7 to 9, the width a3 of the first magnet 1411 in the optical axis direction can be greater than the width b3 of the second magnet 1412 in the optical axis direction. Since the width b3 of the second magnet 1412 in the optical axis direction is smaller than the width a3 of the first magnet 1411 in the optical axis direction, the width of the first magnet portion 1410 in the optical axis direction can be no greater than the width of a conventional magnet in the optical axis direction.

[0122] The width a3 of the first magnet 1411 in the optical axis direction can be greater than the width b1 of the second magnet 1412 in the first direction. Since the width a3 of the first magnet 1411 in the optical axis direction is formed to be greater than the width b1 of the second magnet 1412 in the first direction, the driving magnets can be arranged in a Hellbeck array through the arrangement structure of the first magnet 1411 and the second magnet 1412.

[0123] The widths a2 and b2 of the first magnet 1411 and the second magnet 1412 in the second direction can be greater than the width a1 of the first magnet 1411 and the second magnet 1412 in the first direction, and the second direction can be a direction perpendicular to the optical axis direction and the first direction. Since the width a1 of the first magnet 1411 and the second magnet 1412 in the first direction is formed to be smaller than the widths a2 and b2 of the first magnet 1411 and the second magnet 1412 in the second direction, the driving force and adhesion of the lens assembly can be increased without providing a driving magnet with a wider width.

[0124] The width a1 of the first magnet 1411 in the first direction can be the same as the width b1 of the second magnet 1412 in the first direction. Since the width a1 of the first magnet 1411 in the first direction is formed to be the same as the width b1 of the second magnet 1412 in the first direction, the driving force and adhesion of the lens assembly can be increased without providing a driving magnet with a wider width.

[0125] Figure 10 is a view illustrating the arrangement of the first magnet portion and the coil portion according to an embodiment.

[0126] Referring to Figure 10, the width a3 of the first magnet 1411 in the optical axis direction can be smaller than the width w2 of the outer portions of coils 1710 and 1720 and larger than the width w1 of the inner portions of coils 1710 and 1720. The coil portion 1700 may include a first coil 1710 and a second coil 1720. The first coil 1710 and the second coil 1720 can be arranged along the optical axis direction. The first coil 1710 and the second coil 1720 can be arranged parallel to the first magnet portion 1410 in a first direction. The distance between the second magnets 1412 in the optical axis direction can be greater than the width w1 of the inner portions of coils 1710 and 1720. Since the width a3 of the first magnet 1411 in the optical axis direction is smaller than the width w2 of the outer portions of coils 1710 and 1720 and larger than the width w1 of the inner portions of coils 1710 and 1720, the magnetic interference of the Hellbeck array based on the driving magnet can be further minimized, and the driving force and adhesion of the lens assembly can be further increased.

[0127] Figure 11 is a perspective view illustrating the arrangement of the first magnet portion, the first yoke, and the coil portion according to an embodiment; Figure 12 is a front view illustrating the arrangement of the first magnet portion, the first yoke, and the coil portion according to an embodiment; and Figure 13 is a left side view illustrating the arrangement of the first magnet portion, the first yoke, and the coil portion according to an embodiment.

[0128] Referring to Figures 5 and Figures 11 to 13, the camera actuator 1000 according to the embodiment may further include a magnetic yoke 1800 disposed between the first lens assembly 1200 and the second lens assembly 1300 and the magnet portion 1400.

[0129] A magnetic yoke 1800 may be disposed between the first lens assembly 1200, the second lens assembly 1300, and the magnet portion 1400 to fix the magnet portion 1400 to the first lens assembly 1200 and the second lens assembly 1300. The magnetic yoke 1800 may be disposed on the side surface of the first lens assembly 1200 and the second lens assembly 1300 along a first direction.

[0130] The magnetic yoke 1800 may include a first magnetic yoke 1810 disposed between the first lens assembly 1200 and the first magnet portion 1410 and a second magnetic yoke 1820 disposed between the second lens assembly 1300 and the second magnet portion 1420.

[0131] The first magnetic yoke 1810 may be disposed between the first lens assembly 1200 and the first magnet portion 1410. The first magnetic yoke 1810 may be disposed on the side surface of the first lens assembly 1200 to fix the first magnet portion 1410 to the first lens assembly 1200.

[0132] The second magnetic yoke 1820 may be disposed between the second lens assembly 1300 and the second magnet portion 1420. The second magnetic yoke 1820 may be disposed on the side surface of the second lens assembly 1300 to fix the second magnet portion 1420 to the second lens assembly 1300.

[0133] Figure 14 is a perspective view of the magnetic yoke according to an embodiment, and Figure 15 is a front view of the magnetic yoke according to an embodiment.

[0134] Referring to Figures 5, 14, and 15, the magnetic yoke 1800 according to the embodiment may include a first protrusion 1811, a second protrusion 1812, a third protrusion 1813, and a fourth protrusion 1814 that protrude toward and contact the magnet portion 1400, and a fifth protrusion 1815 and a sixth protrusion 1816 that protrude toward and contact the first lens assembly 1200 or the second lens assembly 1300.

[0135] The magnetic yoke 1800 may include a first protrusion 1811, a second protrusion 1812, a third protrusion 1813, a fourth protrusion 1814, a fifth protrusion 1815, and a sixth protrusion 1816. These may be portions protruding from the side surface of the first magnetic yoke 1810. The first protrusion 1811, the second protrusion 1812, the third protrusion 1813, the fourth protrusion 1814, the fifth protrusion 1815, and the sixth protrusion 1816 may protrude along a first direction. The first to fourth protrusions 1811, 1812, 1813, and 1814, and the fifth and sixth protrusions 1816 may protrude along different directions. The first protrusion 1811, the second protrusion 1812, the third protrusion 1813, and the fourth protrusion 1814 may protrude toward the magnet portion 1400. The first protrusion 1811, the second protrusion 1812, the third protrusion 1813, and the fourth protrusion 1814 can protrude outwards. These protrusions can also protrude toward the magnet portion 1400 and contact the side surface of the magnet portion 1400 to secure the magnet portion 1400 to the yoke 1800. The fifth protrusion 1815 and the sixth protrusion 1816 can protrude toward the first lens assembly 1200 or the second lens assembly 1300. These protrusions protrude outwards. They can also protrude toward the first lens assembly 1200 or the second lens assembly 1300 and contact the grooves of the first lens assembly 1200 or the second lens assembly 1300 to secure the yoke 1800 to the first lens assembly 1200 or the second lens assembly 1300. The first protrusion 1811, the second protrusion 1812, the third protrusion 1813, the fourth protrusion 1814, the fifth protrusion 1815, and the sixth protrusion 1816 may have a planar shape or a curved shape. For example, the first protrusion 1811, the second protrusion 1812, the third protrusion 1813, and the fourth protrusion 1814 may have a planar shape, and the fifth protrusion 1815 and the sixth protrusion 1816 may have a curved shape.

[0136] The first protrusion 1811 and the third protrusion 1813, as well as the second protrusion 1812 and the fourth protrusion 1814, can be spaced apart from each other in the optical axis direction. The fifth protrusion 1815 can be disposed between the first protrusion 1811 and the third protrusion 1813, and the sixth protrusion 1816 can be disposed between the second protrusion 1812 and the fourth protrusion 1814.

[0137] The first protrusion 1811 and the third protrusion 1813 can be spaced apart in the optical axis direction. Since the first protrusion 1811 and the third protrusion 1813 are spaced apart in the optical axis direction, a fifth protrusion 1815 can be disposed between the first protrusion 1811 and the third protrusion 1813. The second protrusion 1812 and the fourth protrusion 1814 can be spaced apart in the optical axis direction. Since the second protrusion 1812 and the fourth protrusion 1814 are spaced apart in the optical axis direction, a sixth protrusion 1816 can be disposed between the second protrusion 1812 and the fourth protrusion 1814. The first protrusion 1811 and the second protrusion 1812 can be spaced apart in a second direction. The first protrusion 1811 and the second protrusion 1812 can be spaced apart in the second direction and arranged parallel to each other. The third protrusion 1813 and the fourth protrusion 1814 can be spaced apart in the second direction. The third protrusion 1813 and the fourth protrusion 1814 can be spaced apart in the second direction and arranged parallel to each other. The fifth protrusion 1815 and the sixth protrusion 1816 may be arranged to be spaced apart in the second direction.

[0138] The width c1 of each of the first protrusion 1811, the second protrusion 1812, the third protrusion 1813 and the fourth protrusion 1814 in the optical axis direction may be greater than the width c2 of each of the fifth protrusion 1815 and the sixth protrusion 1816 in the optical axis direction.

[0139] Figure 16 is a perspective view of a magnetic yoke according to another embodiment, and Figure 17 is a front view of a magnetic yoke according to another embodiment.

[0140] Referring to Figures 16 and 17, the fifth protrusion 1835 of the magnetic yoke 1830 according to the embodiment can be configured to be spaced apart from the first protrusion 1831 and the third protrusion 1833 by a first distance d3, and the first distance d3 can be greater than the width d1 of each of the first protrusion 1831 and the third protrusion 1833 in the optical axis direction, and the sixth protrusion 1836 can be configured to be spaced apart from the second protrusion 1832 and the fourth protrusion 1834 by a first distance d1, and the first distance d1 can be greater than the width d1 of each of the second protrusion 1832 and the fourth protrusion 1834 in the optical axis direction. Since the first protrusion 1811, the second protrusion 1812, the third protrusion 1813, the fourth protrusion 1814, the fifth protrusion 1835, and the sixth protrusion 1836 of the magnetic yoke 1830 are spaced apart by a first distance d3, and the first protrusion 1811, the second protrusion 1812, the third protrusion 1813, and the fourth protrusion 1814 have a width d1 in the optical axis direction that is smaller than the first distance d3, the structure in which a Helbeck array of multiple magnets is disposed for driving the magnets can be more effectively fixed to the lens assembly.

[0141] Figure 18 is a cross-sectional view of a camera actuator according to another embodiment.

[0142] Referring to FIG18, a camera actuator 2000 according to another embodiment may include: a housing 2100; a first lens assembly 2200 and a second lens assembly 2300, the first lens assembly 2200 and the second lens assembly 2300 being movable in the housing 2100 along the optical axis; a housing cover 2600 disposed on the housing 2100; and a magnet portion 2400, the magnet portion 2400 including first magnets 2411 and 2421 and second magnets 2421 and 2422, the first magnets 2411 and 2421 being disposed in the first lens assembly. On the component 2200 and the second lens assembly 2300, the second magnets 2412 and 2422 can be spaced apart from the first magnets 2411 and 2421 in the optical axis direction and are disposed on the housing 2100 and the housing cover 2600. The two poles of the magnets 2411 and 2421 can be disposed in a first direction perpendicular to the optical axis direction. The two poles of the second magnets 2412 and 2422 can be disposed in the optical axis direction. The poles disposed on the outer side of the first magnets 2411 and 2421 can be the same as the poles of the second magnets 2412 and 2422 that are adjacent to the first magnets 2411 and 2421.

[0143] According to the embodiment, the first magnets 2411 and 2421 of the camera actuator 2000 can be disposed on the first lens assembly 2200 and the second lens assembly 2300, and the second magnets 2412 and 2422 can be spaced apart from the first magnets 2411 and 2421 in the optical axis direction and disposed on the housing 2100 and the housing cover 2600.

[0144] First magnets 2411 and 2421 can be disposed on the first lens assembly 2200 and the second lens assembly 2300. The first magnets 2411 and 2421 can be arranged in the same manner as conventional drive magnets. Second magnets 2412 and 2422 can be spaced apart from the first magnets 2411 and 2421 in the optical axis direction and disposed on the housing 2100 and the housing cover 2600. The second magnets 2412 and 2422 can be spaced apart from the first magnets 2411 and 2421. The second magnets 2412 and 2422 may not be disposed on the first lens assembly 2200 and the second lens assembly 2300, but may be disposed on the housing 2100 and the housing cover 2600. The second magnets 2412 and 2422 can be spaced apart from the two ends of the first magnets 2411 and 2421 in the optical axis direction. Since the second magnets 2412 and 2422 are set separately from the first magnets 2411 and 2421, the connection force of the driving magnets can be improved and the driving stability can be increased.

[0145] The camera actuator 2000 may further include: a first stop portion Sa disposed on the housing cover 2600; and a second stop portion Sb disposed on the housing 2100. The first stop portion Sa may include a first stop S1 and a second stop S2 spaced apart in a first direction, and the second stop portion Sb may include a third stop S3 and a fourth stop S4 spaced apart in a first direction. The first stop S1 and the third stop S3 may be disposed along the same axis in the optical axis direction, and the second stop S2 and the fourth stop S4 may be disposed along the same axis in the optical axis direction.

[0146] The magnet portion 2400 may include a first magnet portion 2410 disposed on the first lens assembly 2200 and a second magnet portion 2420 disposed on the second lens assembly 2300. The spacing between the second magnets 2412 of the first magnet portion 2410 in the optical axis direction may be greater than the spacing between the first stop member S1 and the third stop member S3 in the optical axis direction, and the spacing between the second magnets 2422 of the second magnet portion 2420 in the optical axis direction may be greater than the spacing between the second stop member S2 and the fourth stop member S4 in the optical axis direction.

[0147] The spacing between the second magnets 2412 of the first magnet portion 2410 in the optical axis direction can be greater than the spacing between the second magnets 2422 of the second magnet portion 2420 in the optical axis direction.

[0148] The housing cover 2600 may include a first groove 2610 and a second groove 2620 provided with second magnets 2412 and 2422, and the housing 2100 may include a third groove 2110 and a fourth groove 2120 provided with second magnets 2412 and 2422. The first groove 2610, the second groove 2620, the third groove 2110 and the fourth groove 2120 may overlap with the magnet portion 2400 in the optical axis direction, and may not overlap with the first stop portion Sa and the second stop portion Sb in the optical axis direction.

[0149] Figure 19 is a perspective view of a mobile terminal with a camera module according to an embodiment.

[0150] Referring to FIG19, the mobile terminal 1500 of the embodiment may include a camera module 1, a flash module 3 and an autofocus device 2 disposed on the rear surface.

[0151] Camera module 1 may include image capture functionality and autofocus functionality. For example, camera module 1 may include autofocus functionality that utilizes images.

[0152] Camera module 1 processes image frames of still or moving images acquired by the image sensor in capture mode or image recall mode.

[0153] 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 surface of the mobile terminal body.

[0154] For example, camera module 1 may include a first camera module and a second camera module, and OIS may be implemented by the first camera module together with AF or zoom functions. Furthermore, AF, zoom, and OIS functions may be implemented by the second camera module. In this case, since the first camera module includes both the aforementioned OIS actuator and camera actuator, miniaturization of the camera module can be easily achieved by changing the optical path.

[0155] The flash module 3 may include a light-emitting element therein. The flash module 3 can be operated via camera operation on a mobile terminal or by user control.

[0156] The autofocus device 2 may include one of the packages of the surface-emitting laser element as a light-emitting unit.

[0157] The autofocus device 2 may include an autofocus function using a laser. The autofocus device 2 can be used primarily under conditions where the autofocus function of the image from the camera module 1 is degraded, such as in close-range environments of 10 m or less or in dark environments.

[0158] The autofocus device 2 may include: a light emitting unit including a vertical cavity surface emitting laser (VCSEL) semiconductor device; and a light receiving unit such as a photodiode that converts light energy into electrical energy.

[0159] Figure 20 is a perspective view of a vehicle equipped with a camera module according to an embodiment.

[0160] For example, Figure 20 is an exterior view of a vehicle including a vehicle driving assistance device with a camera module applied according to an embodiment.

[0161] Referring to FIG20, the vehicle 700 of this embodiment may include wheels 13FL and 13FR that rotate via a power source, as well as predetermined sensors. The sensors may be, but are not limited to, a camera sensor 3000.

[0162] The camera sensor 3000 may be a camera sensor with a camera module applied according to the embodiment. The vehicle 700 of the embodiment can obtain image information by capturing images of the front or surroundings through the camera sensor 3000, use the image information to determine if a lane is not recognized, and generate a virtual lane when a lane is not recognized.

[0163] For example, camera sensor 3000 can capture the environment in front of vehicle 700 to obtain a frontal image, and processor (not shown) can analyze the objects included in the frontal image to obtain image information.

[0164] For example, when objects such as lanes, adjacent vehicles, traffic obstacles, and median strips, curbs, and roadside trees corresponding to indirect road markings are captured in an image captured by camera sensor 3000, the processor can detect these objects and include them in the image information. In this case, the processor can acquire distance information to the objects detected by camera sensor 3000 to further supplement the image information.

[0165] Image information can be information related to objects captured in the image. Camera sensor 3000 may include an image sensor and an image processing module.

[0166] The camera sensor 3000 can process still or moving images acquired by an image sensor (e.g., a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD)).

[0167] The image processing module can process still or moving images acquired by the image sensor, extract necessary information, and send the extracted information to the processor.

[0168] In this case, camera sensor 3000 may include a stereo camera to improve the measurement accuracy of the object and ensure more information such as the distance between vehicle 700 and the object, but the invention is not limited thereto.

[0169] Although the embodiments have been primarily described above, these embodiments are merely examples and are not intended to limit the invention. It will be apparent that those skilled in the art can make various modifications and applications not illustrated herein without departing from the essential characteristics of the embodiments. For example, each of the components specifically shown in the embodiments can be modified and implemented. Furthermore, it should be understood that differences related to modifications and applications are included within the scope of the invention as defined by the appended claims.

Claims

1. A camera actuator, the camera actuator comprising: case; A first lens assembly and a second lens assembly, which move along the optical axis within the housing; The lens assembly includes a magnet portion disposed on the first lens assembly and the second lens assembly. The magnet portion includes a first magnet and a second magnet. The second magnet is disposed at each of the two ends of the first magnet in the optical axis direction. The two poles of the first magnet are disposed along a first direction perpendicular to the optical axis direction. The two poles of the second magnet are disposed along the optical axis direction. The pole disposed on the outer side of the first magnet is the same as the adjacent pole of the second magnet and the first magnet.

2. The camera actuator according to claim 1, wherein, The magnet portion includes a first magnet portion disposed on the first lens assembly and a second magnet portion disposed on the second lens assembly.

3. The camera actuator according to claim 2, wherein, The two poles of the first magnet in the first magnet portion and the first magnet in the second magnet portion are arranged in opposite directions.

4. The camera actuator according to claim 1, wherein, The width of the first magnet in the optical axis direction is greater than the width of the second magnet in the optical axis direction.

5. The camera actuator according to claim 1, wherein, The width of the first magnet in the optical axis direction is greater than the width of the second magnet in the first direction.

6. The camera actuator according to claim 1, wherein, The width of the first magnet and the second magnet in the second direction is greater than the width of the first magnet and the second magnet in the first direction, and the second direction is a direction perpendicular to the optical axis direction and the first direction.

7. The camera actuator according to claim 1, wherein, The width of the first magnet in the first direction is the same as the width of the second magnet in the first direction.

8. The camera actuator according to claim 1, further comprising: A substrate, the substrate being disposed on the outer side of the housing; The first magnet has a width in the optical axis direction that is smaller than the width of the outer side of the coil and larger than the width of the inner side of the coil.

9. The camera actuator according to claim 2, further comprising: A housing cover, wherein the housing cover is disposed on the housing; The first stop portion and the second stop portion are disposed on the housing cover and the second stop portion are disposed on the housing.

10. The camera actuator according to claim 9, wherein, The first stop portion includes a first stop and a second stop spaced apart in the first direction, the second stop portion includes a third stop and a fourth stop spaced apart in the first direction, and the first stop to the fourth stop do not overlap with the second magnet portion in the first direction.

Images