Camera actuator and camera module including same

Abstract

An embodiment of the present invention discloses a camera device including a fixed part; a moving plate disposed on the fixed part; a first moving part disposed on the moving plate; a first driving part that tilts the first moving part based on at least one of a first axis and a second axis; a first ball part disposed between the moving plate and the first moving part; and a second ball part disposed between the moving plate and the fixed part; wherein the first driving part includes a first coil disposed on the first moving part and a first magnet disposed on the fixed part.

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION Embodiments of the present invention relate to a camera actuator and a camera module including the same. [Background technology]

[0002] A camera is a device that takes photos or videos of a subject and is attached to a portable device, drone, vehicle, etc. To improve image quality, a camera module or camera device may have an image stabilization (IS) function that corrects or prevents image shake caused by user movement, an autofocus (AF) function that automatically adjusts the distance between the image sensor and lens to align the lens focal length, and a zoom function that increases or decreases the magnification of a distant subject through a zoom lens.

[0003] Meanwhile, the higher the pixel count of an image sensor, the higher the resolution and the smaller the pixel size, but the smaller the pixel size, the less light is received over the same period of time. Therefore, the higher the pixel count of a camera, the more severe the image blur caused by camera shake that occurs in dark environments when the shutter speed slows down. One of the most well-known image stabilization technologies is optical image stabilizer (OIS), which corrects for movement by changing the path of light.

[0004] According to general OIS technology, camera movement is detected through a gyro sensor or the like, and the lens or camera module including the lens and image sensor is tilted or moved based on the detected movement. When the lens or the camera module including the lens and image sensor is tilted or moved for OIS, additional space for tilting or moving needs to be secured around the lens or camera module.

[0005] Meanwhile, the actuator for the OIS can be placed around the lens. In this case, the actuator for the OIS can include two axes perpendicular to the optical axis Z, i.e., an actuator responsible for X-axis tilting and an actuator responsible for Y-axis tilting. In this case, if the actuator for the OIS moves the lens without the image sensor, image distortion occurs. Distortion is particularly prevalent at the edges or corners.

[0006] Also, since the image sensor and the lens are separated and only one of them is tilted, there is a problem that it is difficult to correct shake at a wide angle. Summary of the Invention [Problem to be solved by the invention]

[0007] The technical problem to be solved by the embodiments of the present invention is to provide a camera actuator and a camera module in which an image sensor, a lens, and a substrate rotate or move together, thereby eliminating image distortion and enabling wide-angle shake correction.

[0008] In addition, embodiments of the present invention enable high-bandwidth correction by moving or tilting all components except the housing, and correct images mechanically, thereby providing a camera actuator and camera module that consumes less current and has less load than lens or sensor movement during image processing.

[0009] Furthermore, the embodiment of the present invention can provide a camera actuator that generates less heat because the substrate, lens, and image sensor move together, and a camera module including the same.

[0010] The technical problem that the embodiments of the present invention aim to solve is to provide a camera actuator that is applicable to ultra-slim, ultra-miniature and high-resolution cameras.

[0011] The problems to be solved by the examples are not limited to these, and may also include the objectives and effects that can be grasped from the means for solving the problems and embodiments described below. [Means for solving the problem]

[0012] A camera actuator according to an embodiment of the present invention includes a housing; a moving plate disposed within the housing; a moving section disposed on the moving plate and moving in a direction perpendicular to the optical axis direction; a first ball section disposed between the moving plate and the moving section; and a second ball section disposed between the moving plate and the housing; and the moving section includes a substrate section and a coil disposed on the substrate section.

[0013] The moving portion may include a sensor base disposed on the moving plate; a holder disposed on the base portion; and a bobbin disposed within the holder.

[0014] The substrate portion may be disposed on the sensor base.

[0015] The magnet may include: a first magnet disposed in the housing; a yoke disposed in the housing; and a second magnet disposed in the holder.

[0016] The sensor base may include a first groove in which the first ball portion is disposed, and the housing may include a second groove in which the second ball portion is disposed.

[0017] The bobbin is movable along the optical axis direction.

[0018] The bobbin can move in response to the movement of the moving part.

[0019] The housing may include a first housing side and a second housing side facing each other; and a third housing side and a fourth housing side facing each other; and the third housing side and the fourth housing side may be disposed between the first housing side and the second housing side.

[0020] The first housing side may include an outwardly projecting protrusion; and an internal groove formed by the protrusion.

[0021] The height of the protrusion may be less than the maximum height of the first housing side portion.

[0022] The housing may include a first magnet disposed in the housing, and the first magnet may include a first sub-magnet disposed on a side of the second housing and a second sub-magnet disposed on one of the third housing side and the fourth housing side.

[0023] The sensor may further include a yoke disposed in the housing, and a holding magnet disposed in the sensor base, wherein the holding magnet and the yoke may overlap in the optical axis direction.

[0024] The substrate portion may include a first region; a second region extending upward from the first region; and a third region extending outward from the first region.

[0025] The third region may include a first bending portion bent in the optical axis direction, a second bending portion bent outward from the first bending portion, and a third bending portion bent in a direction perpendicular to the optical axis direction.

[0026] a clamp disposed within the inner groove.

[0027] The clamp may be spaced apart from the base portion in the optical axis direction or in a direction perpendicular to the optical axis direction.

[0028] The coil may include a first coil and a second coil disposed in the second region, and the second coil may face the second magnet.

[0029] The second region may be disposed between the first coil and the first magnet.

[0030] It may include an image sensor disposed on the substrate portion.

[0031] A shaft disposed in the holder can be included.

[0032] The holder may include a second magnet, and the shaft may include a magnetic material to form an attractive force with the second magnet.

[0033] The second magnet may be disposed between the second coil and the shaft.

[0034] The camera device of the embodiment includes a fixed part; a moving plate arranged on the fixed part; a first moving part arranged on the moving plate; a first driving part that tilts the first moving part based on at least one of a first axis and a second axis; a first ball part arranged between the moving plate and the first moving part; and a second ball part arranged between the moving plate and the fixed part; and the first driving part includes a first coil arranged on the first moving part and a first magnet arranged on the fixed part.

[0035] The first moving part may include an image sensor and a substrate part coupled to the image sensor.

[0036] The optical system may include a second moving part disposed within the first moving part; and a second driving part that moves the second moving part in the optical axis direction; the second driving part may include a second coil disposed in the first moving part and a second magnet disposed in the second moving part; and the substrate part may include a first substrate part to which the image sensor is coupled and a second substrate part to which the first coil and second coil are disposed.

[0037] The first substrate portion may include a body portion on which the image sensor is disposed; and an extension portion connected to the body portion and on which a connector or a terminal is disposed.

[0038] The second substrate unit may include a first substrate connected to the first substrate unit and on which the first coil is disposed, and a second substrate on which the second coil is disposed.

[0039] The first coil may include a first unit coil and a second unit coil, and the first substrate may include a first unit substrate on which the first unit coil is disposed and a second unit substrate on which the second unit coil is disposed.

[0040] A sensor base may be disposed between the moving plate and the base portion.

[0041] The fixed part may include a cover that houses the first moving part, and the cover may include a first cover to which the first magnet is coupled and a second cover to which the first cover is coupled.

[0042] As an example, the camera device includes a cover; a moving plate disposed within the cover; a substrate portion disposed on the moving plate; an image sensor disposed on the substrate portion; a holder disposed on the image sensor; a bobbin disposed within the holder; a first magnet disposed on the cover; a second magnet disposed on the bobbin; a first coil disposed on the substrate portion and facing the first magnet, and a second coil facing the second magnet; a first ball portion disposed between the moving plate and the cover; and a second ball portion disposed between the moving plate and the substrate portion.

[0043] The first ball portion may be disposed in a second axial direction, and the second ball portion may be disposed in a first axial direction.

[0044] The first ball portion and the second ball portion may be integrally formed with the moving plate.

[0045] The first ball portion and the second ball portion may be bulged at the top and bottom, respectively.

[0046] The first ball portion and the second ball portion may be disposed in grooves formed on the upper and lower surfaces of the moving plate, respectively.

[0047] The substrate portion may include a first substrate portion to which the image sensor is coupled and a second substrate portion to which the first coil and second coil are disposed, and the first substrate portion may include a body portion to which the image sensor is disposed; and an extension portion connected to the body portion and to which a connector or terminal is disposed; and a clamp disposed between the extension portion and the holder.

[0048] The cover may include a first cover to which the first magnet is coupled and a second cover to which the first cover is coupled, and the first cover may include a protrusion that protrudes outward and on which the extension is disposed.

[0049] As an example, the camera device includes a fixed part; an imaging module arranged on the fixed part and including a substrate part; an image sensor arranged on the substrate part; a holder arranged on the image sensor; and a bobbin arranged in the holder; a moving plate arranged between the fixed part and the imaging module; a first ball part arranged between the moving plate and the fixed part; and a second ball part arranged between the moving plate and the imaging module.

[0050] The imaging module may include a sensor base disposed between the moving plate and the base portion; and a holding magnet disposed on the sensor base.

[0051] The holding magnet and the yoke may overlap in the optical axis direction.

[0052] The magnet may include a first magnet disposed on the fixed portion; a second magnet disposed on the bobbin; a first coil disposed on the substrate portion and facing the first magnet, and a second coil disposed on the substrate portion and facing the second magnet. [Effects of the Invention]

[0053] The technical problem to be solved by the embodiments of the present invention is to realize a camera actuator and a camera module in which an image sensor, a lens, and a substrate rotate or move together, thereby eliminating image distortion and enabling high-angle shake correction.

[0054] In addition, embodiments of the present invention enable high-bandwidth correction by moving or tilting all components except the housing, and correct images mechanically, making it possible to realize a camera actuator and camera module that consumes less current and has less load than lens or sensor movement during image processing.

[0055] Furthermore, the embodiment of the present invention can realize a camera actuator that generates less heat and a camera module including the same, since the substrate, lens, and image sensor move together.

[0056] The technical problem to be solved by the embodiments of the present invention is to realize a camera actuator that is applicable to ultra-slim, ultra-compact and high-resolution cameras.

[0057] The various beneficial advantages and effects of the present invention are not limited to the above, but will be more easily understood in the course of describing specific embodiments of the present invention. [Brief explanation of the drawings]

[0058] [Figure 1] FIG. 1 is a perspective view of a camera module including a camera actuator according to an embodiment.

[0059] [Figure 2] FIG. 2 is an exploded perspective view of a camera actuator according to an embodiment.

[0060] [Figure 3] FIG. 3 is another perspective view of FIG. 2.

[0061] [Figure 4] FIG. 2 is an exploded perspective view of a housing and a moving plate in the camera actuator according to the embodiment.

[0062] [Figure 5] 5 is a diagram illustrating the coupling or assembly of the housing and the moving plate in FIG. 4.

[0063] [Figure 6] FIG. 2 is an exploded perspective view of a sensor base and a substrate portion of the camera actuator according to the embodiment.

[0064] [Figure 7] 5 is a diagram illustrating the connection or assembly between the sensor base and the substrate part.

[0065] [Figure 8] FIG. 2 is an exploded perspective view of a holder and a filter in the camera actuator according to the embodiment.

[0066] [Figure 9] 9 is a view illustrating the coupling or assembly between the holder and the filter in FIG. 8.

[0067] [Figure 10] FIG. 2 is an exploded perspective view of a bobbin in the camera actuator according to the embodiment.

[0068] [Figure 11] FIG. 10 is a diagram illustrating the coupling or assembly between the bobbin and the second magnet.

[0069] [Figure 12] 1 is a diagram illustrating the assembly of a camera actuator according to an embodiment.

[0070] [Figure 13] 10 is a diagram illustrating one drive of a camera actuator according to an embodiment.

[0071] [Figure 14] 1 is an exploded view of a moving part and a fixed part during one driving operation of a camera actuator according to an embodiment.

[0072] [Figure 15] This is a view taken along the line AA' in Figure 1.

[0073] [Figure 16] This is a view taken along the line BB' in Figure 1.

[0074] [Figure 17] FIG. 17 is a perspective view of FIG.

[0075] [Figure 18]FIG. 2 is a perspective view of a substrate portion of the camera actuator according to the embodiment.

[0076] [Figure 19a] FIG. 19 is a perspective view different from that of FIG. 18.

[0077] [Figure 19b] FIG. 2 is a perspective view of a moving plate according to the embodiment.

[0078] [Figure 19c] FIG. 10 is another perspective view of the moving plate according to the embodiment.

[0079] [Figure 19d] 10 is a view illustrating a bottom surface of a sensor base of a moving unit according to an embodiment;

[0080] [Figure 19e] 1 is a view illustrating the inner bottom surface of a fixing part (or housing) according to an embodiment.

[0081] [Figure 20] This is a view taken along the line CC' in Figure 1.

[0082] [Figure 21] FIG. 2 is a side view of the camera actuator according to the embodiment, with the cover and housing removed.

[0083] [Figure 22] 10 is a diagram illustrating a maintaining force for another drive in a camera actuator according to an embodiment;

[0084] [Figure 23] 10 is a diagram illustrating another driving method of the camera actuator according to the embodiment.

[0085] [Figure 24] This is a view taken along the line DD' in Figure 23.

[0086] [Figure 25] This is a view taken along the line EE' in FIG.

[0087] [Figure 26] 10A-10C are multiple perspective views of a camera actuator holder according to an embodiment.

[0088] [Figure 27] 1 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied;

[0089] [Figure 28] 1 is a perspective view of a vehicle to which a camera module according to an embodiment is applied; DETAILED DESCRIPTION OF THE INVENTION

[0090] The present invention can be modified in various ways and can have various embodiments, and therefore, specific embodiments will be illustrated and described in the drawings. However, it is not intended to limit the present invention to the specific embodiments, and it should be understood that the present invention includes all modifications, equivalents, and alternatives that fall within the spirit and technical scope of the present invention.

[0091] Terms including ordinal numbers, such as "second," "first," etc., may be used to describe various components, but the components are not limited by the terms. Terms are used only to distinguish one component from another. For example, a second component may be designated as a "first component," and similarly, a first component may be designated as a "second component," without departing from the scope of the present invention. The term "and / or" includes a combination of multiple related listed items or any of multiple related listed items.

[0092] When a component is said to be "coupled" or "connected" to another component, it should be understood that it may be directly coupled or connected to the other component, but that there may be other components in between. Conversely, when a component is said to be "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0093] The terms used in this application are merely used to describe specific embodiments and are not intended to limit the present invention. The singular expressions include the plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprise" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0094] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms as defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0095] Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, and the same or corresponding elements will be given the same reference numerals regardless of the drawing numbers, and redundant description thereof will be omitted.

[0096] FIG. 1 is a perspective view of a camera module including a camera actuator according to an embodiment, FIG. 2 is an exploded perspective view of the camera actuator according to the embodiment, and FIG. 3 is another perspective view of FIG.

[0097] Referring to FIG. 1, the camera module according to the embodiment may include a camera actuator 1000. The camera module according to the embodiment may further include the camera actuator 1000 and a lens that is moved or transported by the camera actuator 1000. The following description will be based on the camera actuator 1000 without a lens. Furthermore, the term camera actuator may be used interchangeably with "lens transport device," "lens driving device," "lens moving device," etc. Furthermore, the term camera module may be used interchangeably with camera apparatus, camera device, imaging apparatus, imaging device, imaging module, etc.

[0098] In addition, the camera actuator 1000 according to the embodiment may be an AF (Auto Focus) and / or OIS (Optical Image Stabilizer) actuator. For example, the actuator 1000 may be an actuator that implements both AF and OIS. In addition, the camera actuator 1000 according to the embodiment may be a zoom actuator that additionally performs movement of an additional moving lens group.

[0099] The camera actuator 1000 according to the embodiment may be a voice coil motor, a micro actuator, a silicon actuator, etc., and may be applied in various ways such as an electrostatic type, a thermal type, a bimorph type, an electrostatic force type, etc., but is not limited thereto. In this embodiment, an actuator using a magnet and a coil will be described.

[0100] OIS can also be used interchangeably with terms such as image stabilization, optical image stabilization, optical image correction, and image stabilization.

[0101] 2 and 3, the camera actuator 1000 and camera device according to the embodiment may include a housing 1110, a moving plate 1120, a sensor base 1130, a substrate portion 1140, a holder 1150, a bobbin 1160, and a cover 1170.

[0102] The housing 1110 may be located at the bottom of the camera actuator 1000. The housing 1110 may have a cavity. For example, the housing 1110 may have various shapes. The cavity of the housing 1110 may accommodate a moving plate 1120, a sensor base 1130, a substrate 1140, a holder 1150, and a bobbin 1160, which will be described later. The moving plate 1120, the sensor base 1130, the substrate 1140, the holder 1150, and the bobbin 1160 may be arranged in order along the optical axis direction. Here, the bottom surface corresponds to the optical axis direction in a first direction. The first direction is the X-axis direction in the drawing. The first direction (X-axis direction) may be aligned with the direction of light incident on the image sensor. Here, the first direction (X-axis direction) may correspond to a direction perpendicular to the image sensor or a direction toward the filter FT or the lens LS on the image sensor. As described above, the camera actuator 1000 may also include a lens LS arranged within the bobbin 1160. The second direction may be the Y-axis direction in the drawing, which is perpendicular to the first direction (X-axis direction). The third direction may be the Z-axis direction in the drawing, which is perpendicular to the first and second directions. As a result, the moving plate 1120, sensor base 1130, substrate unit 1140, holder 1150, and bobbin 1160 may be arranged in order along the optical axis direction. Alternatively, the moving plate 1120, sensor base 1130, substrate unit 1140, holder 1150, and bobbin 1160 may be arranged in order toward the top within the housing 1110.

[0103] In addition, the bobbin 1160 can move along the optical axis direction, tilt or rotate in a direction perpendicular to the optical axis, which will be described in detail later.

[0104] The housing 1110 may be a "fixed part," "fixed member," or "fixed element" of the camera actuator 1000. That is, the housing 1110 may not move or rotate in the optical axis direction or a direction perpendicular to the optical axis. Accordingly, components connected or coupled to the housing 1110 may not move or rotate in the optical axis direction or a direction perpendicular to the optical axis. However, the second ball part B2 mounted in the second groove of the housing 1110 may rotate in a direction perpendicular to the optical axis direction.

[0105] The moving plate 1120 can be located on the bottom surface of the cavity of the housing 1110. The moving plate 1120 can be disposed within the housing 1110. The moving plate 1120 can rotate in a direction perpendicular to the optical axis direction.

[0106] The moving plate 1120 may have a first ball portion B1 and a second ball portion B2. Each of the first ball portion B1 and the second ball portion B2 may include at least one ball. One of the first ball portion B1 and the second ball portion B2 may be positioned to overlap along one of the second direction (Y-axis direction) and the third direction (Z-axis direction). The other of the first ball portion B1 and the second ball portion B2 may be positioned to overlap along the other of the second direction (Y-axis direction) and the third direction (Z-axis direction). The first ball portion B1 and the second ball portion B2 may be arranged side by side along directions that intersect or are perpendicular to each other. This allows the first ball portion B1 to rotate, pivot, or tilt in one of the second direction and the third direction. The second ball portion B2 may rotate, pivot, or tilt in the other of the second direction and the third direction.

[0107] The first ball portion B1 may be disposed between the moving plate 1120 and a moving portion disposed above the moving plate 1120. The moving portion (MP in FIG. 14) may include the moving plate 1120, a sensor base 1130, a substrate portion 1140, a holder 1150, and a bobbin 1160. In particular, the moving portion (MP in FIG. 14) may include the substrate portion 1140, the bobbin 1160, and coils C1 and C2 connected to the substrate portion 1140. The moving portion may rotate or move in a direction perpendicular to the optical axis direction. That is, an OIS function may be implemented. Furthermore, the moving portion (MP, FIG. 14) may include the moving plate 1120. For example, when rotation occurs based on the first ball portion B1, the moving portion excluding the moving plate 1120 may rotate or move. When rotation occurs based on the second ball portion B2, the moving portion including the moving plate 1120 may rotate or move. Therefore, the following description will be based on the assumption that the moving part includes the moving plate 1120.

[0108] Also, according to the embodiment, the camera device may be described as including a fixed part 1110, a camera module (or imaging module), and a moving plate 1120. In this case, the camera module may correspond to the moving part described above. That is, the camera module or imaging module may be disposed on the fixed part and may include a substrate part 1140, an image sensor IS disposed on the substrate part, a holder 1150 disposed on the image sensor, and a bobbin 1160 disposed in the holder. Furthermore, the moving plate 1120 may be disposed between the fixed part and the camera module (or imaging module). The first ball part B1 may be disposed between the moving plate and the fixed part, and the second ball part may be disposed between the moving plate and the camera module (or imaging module).

[0109] Furthermore, in an embodiment of the present invention, the camera device may include a fixed part (housing 1110), a moving plate 1120, and a first moving part. As described above, the moving plate 1120 may be disposed on the fixed part. The first moving part may be disposed on the moving plate. In particular, the moving part may include a first moving part and a second moving part. In this case, the first moving part may include components that move according to the OIS function. The second moving part may include components that move according to the AF function. For example, the first moving part may include a sensor base 1130 and a substrate part 1140. The second moving part may include a holder 1150 and a bobbin 1160.

[0110] Furthermore, the camera device according to the embodiment may include a driving unit that moves or rotates the moving unit (first moving unit and second moving unit). The driving unit may include a magnet and a coil. As an example, the driving unit may include a first magnet M1, a second magnet M2, a first coil C1, and a second coil C2. The driving unit may also include a first driving unit that moves, tilts, or rotates the first moving unit based on at least one of a first axis and a second axis. Here, the first axis may correspond to the Y-axis (or Z-axis) in the second direction (or third direction). The second axis may correspond to the Z-axis (or Y-axis) in the third direction (or second direction). The first driving unit may also include the first magnet M1 and the first coil C1. The first driving unit may also include the first coil C1 disposed in the first moving unit and the first magnet M1 disposed in the fixed unit (housing). The first moving unit may also be tilted based on at least one of the first axis and the second axis by the first driving unit. And, moving along an axis can mean moving or shifting in an axial direction, and moving along an axis or tilting (or rotating) about an axis means rotational movement of a component or member.

[0111] Furthermore, the second moving unit may be disposed within the first moving unit. The second moving unit may move along the optical axis direction within the first moving unit. In this case, the driving unit may include a second driving unit that moves the second moving unit in the optical axis direction. Such a second driving unit may include a second coil C2 and a second magnet M2. The second coil C2 may be disposed in the first moving unit. In particular, the second coil C2 may be disposed in the substrate unit. And the second magnet M2 may be disposed in the second moving unit. As an example, the second magnet M2 may be disposed on the bobbin 1160.

[0112] Furthermore, as described above, the first moving unit may be composed of an image sensor and a substrate unit coupled to the image sensor. Such a substrate unit 1140 may include a first substrate unit and a second substrate unit. This will be described in detail with reference to FIGS. 6 and 7.

[0113] The sensor base 1130 may be disposed on the moving plate 1120. A first ball portion B1 may be disposed between the sensor base 1130 and the moving plate 1120. The first ball portion B1 may also be disposed between the first moving portion and the moving plate 1120. The sensor base 1130 is disposed on the upper part of the moving plate 1120 and may include a holding magnet HM. The holding magnet HM may form an attractive force with a yoke YK within the housing 1110. As a result, even when the moving portion moves, the moving portion can maintain its position within the housing 1110, which is a fixed portion, within a predetermined range. Separately, a second ball portion B2 may be disposed between the housing 1110 and the moving plate 1120. The second ball portion B2 may also be disposed between the moving plate 1120 and the fixed portion (housing 1110).

[0114] The substrate unit 1140 may be located on the sensor base 1130. The substrate unit 1140 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), a rigid-flexible printed circuit board (RigidFlexible PCB), etc. However, the substrate unit 1140 is not limited to these types.

[0115] The substrate unit 1140 may include coils C1 and C2. The substrate unit 1140 may be electrically connected to the coils C1 and C2. The substrate unit 1140 may further include a connector for connecting to an external device. A control unit and a driver element (driver IC) may be mounted on the substrate unit 1140. The driver element of the substrate unit 1140 may output a signal that adjusts the current applied to the coil in response to a signal received from an external device. Various circuit elements may also be mounted on the substrate unit 1140. For example, a position detection sensor (gyro sensor, gs) may be mounted on the substrate unit 1140.

[0116] The holder 1150 may be positioned on the substrate unit 1140. The holder 1150 may be coupled to a bobbin 1160 disposed inside the holder 1150 for an autofocus (AF) function. At this time, the position between the holder 1150 and the bobbin 1160 may be maintained within a predetermined range due to the attractive force between the second magnet M2 and the shaft SH, as will be described later. That is, even if the bobbin 1160 moves along the optical axis direction due to the second magnet and the second coil, the bobbin 1160 may not be separated from the holder 1150. In other words, the attractive force between the second magnet M2 and the shaft SH may form a position maintaining force between the bobbin 1160 and the holder 1150. At this time, the shaft SH may be disposed in the holder 1150.

[0117] A filter FT may also be disposed in the holder 1150. The filter FT can prevent foreign matter from entering the image sensor IS mounted on the substrate unit 1140. Therefore, the filter FT can be positioned above the image sensor IS.

[0118] The size of the filter FT may be the same as or different from that of the image sensor IS. The size of the filter FT may vary depending on the effective area of ​​the image sensor IS.

[0119] As described above, the bobbin 1160 can accommodate the lens LS, which allows the bobbin 1160 to move in the optical axis direction or in a direction perpendicular to the optical axis.

[0120] The cover 1170 may be located in one area (e.g., the outermost part) of the camera actuator 1000 and may enclose or cover the moving part and / or the fixed part. The cover 1170 may block or reduce externally generated electromagnetic waves, thereby reducing errors in the operation of the OIS and AF due to the elements mounted on the substrate part 1140. The cover 1170 may be fastened by being inserted or mated with the lower housing 1110.

[0121] Furthermore, as described above, the camera actuator 1000 may include the image sensor IS, the filter FT, the first magnet M1, the second magnet M2, the first coil C1, the second coil C2, the clamp CL, the shaft SH, etc. It should be understood that the camera actuator 1000 may further include other components, which will be described later, in addition to the components described above.

[0122] Also, the first magnet M1 may be disposed in the housing 1110. And the yoke YK may be disposed in the housing 1110. The second magnet M2 may be disposed in the holder 1150. The clamp CL may be disposed within the housing 1110.

[0123] The image sensor IS receives light passing through the lens LS and converts the optical signal into an electrical signal. The image sensor IS may include various elements for this purpose.

[0124] Furthermore, in the camera actuator or camera device according to the present invention, the housing 1110 may be referred to as a "base," a "fixed part," a "first cover," a "lower member," a "lower support member," or a "support member." For example, in the embodiment, the cover may include a first cover and a second cover. The first cover may correspond to the housing 1110. Thus, a first magnet may be coupled to the first cover 1110. Thus, the moving plate 1120 may be positioned on the first cover or within the cover.

[0125] The second cover may correspond to the above-described cover 1170. That is, the camera device according to the embodiment may be described as including a cover that includes the housing 1110 (first cover) and the cover 1170 (second cover).

[0126] Furthermore, holder 1150 may be referred to as a "housing," a "housing assembly," etc. For example, a camera device according to an embodiment may include base 1110 and holder 1150. Furthermore, bobbin 1160 may be referred to as a "lens carrier," a "lens transfer portion," a "lens transfer member," etc.

[0127] FIG. 4 is an exploded perspective view of a housing and a moving plate in a camera actuator according to an embodiment, and FIG. 5 is a view illustrating the coupling or assembly of the housing and the moving plate in FIG. 4;

[0128] 4 and 5, a moving plate 1120 may be located on a housing 1110. In an embodiment, the housing 1110 may include a first housing side 1110a, a second housing side 1110b, a third housing side 1110c, and a fourth housing side 1110d in addition to a lower portion or bottom portion.

[0129] The first housing side 1110a and the second housing side 1110b may be disposed opposite each other, and the third housing side 1110c and the fourth housing side 1110d may be disposed between the first housing side 1110a and the second housing side 1110b.

[0130] The third housing side 1110c and the fourth housing side 1110d may be positioned to face each other. The third housing side 1110c and the fourth housing side 1110d may contact the first housing side 1110a and the second housing side 1110b, respectively. For example, the first housing side 1110a and the second housing side 1110b may overlap and be spaced apart in the second direction (Y-axis direction). The third housing side 1110c and the fourth housing side 1110d may overlap and be spaced apart in the third direction (Z-axis direction).

[0131] First, the housing 1110 may include a second groove PH2 in which the second ball portion is disposed on the bottom surface or the inner surface of the lower portion. That is, the second ball portion may be mounted in the second groove PH2. For example, a coupling member (e.g., grease, etc.) for mounting the second ball portion may be positioned in the second groove PH2. This allows the second ball portion to easily tilt, rotate, or move in the second groove PH2.

[0132] The first housing side 1110a may include a protrusion 1110ap protruding outward. In other words, the first cover 1110 may include a protrusion 1110ap protruding outward and on which an extension of the substrate is disposed. That is, the housing 1110 may include a protrusion 1110ap protruding or extending outward from any one of its side or outer surface, and the housing 1110 may further include an inner groove 1110ag formed by the protrusion 1110ap. That is, the cavity may partially protrude outward due to the protrusion 1110ap of the first housing side 1110a. The clamp and substrate 1140 may be positioned in the inner groove 1110ag. In other words, the inner groove 1110ap allows the substrate 1140 to extend outward and be easily connected to an external device. Furthermore, the substrate extending outward through the inner groove 1110ap may easily prevent an increase in the size of the camera actuator. That is, a miniaturized camera actuator according to this embodiment may be realized.

[0133] Furthermore, the height of the protrusion 1110ap may be smaller than the maximum height of the first housing side portion 1110a. This configuration makes it easy to ensure a space for the board portion to extend outward. It also makes it possible to provide a more compact camera actuator.

[0134] Furthermore, a first magnet M1 may be disposed in the housing 1110. Also, the first magnet M1 may be located on the cover or the first cover. The first magnet M1 may include a first sub-magnet M1a and a second sub-magnet M1b extending in directions perpendicular to each other.

[0135] In addition, as an embodiment, the first sub-magnet M1a may be arranged on any one side except the first housing side 1110a. For example, the first sub-magnet M1a may be arranged on the second housing side 1110b. And the second sub-magnet M1b may be arranged on either the third housing side 1110c or the fourth housing side 1110d. That is, the first sub-magnet M1a and the second sub-magnet M1b may not overlap in the second or third direction. In other words, the first sub-magnet M1a and the second sub-magnet M1b may be arranged to be offset in the second or third direction.

[0136] Furthermore, the housing 1110 may include a yoke groove Ykh disposed on its bottom surface. The yoke groove Ykh may be located between the plurality of second grooves Ph2. This allows the attractive force between the housing 1110 and the sensor base to be greater at the center of the moving plate. This may improve the efficiency of the attractive force, coupling force, or retention force between the moving part and the housing 1110. In other words, with the moving plate sandwiched between them, the moving part may receive a force (attractive force) on the lower side, and the housing may receive a force (attractive force) on the upper side. In other words, the moving plate may be pressurized by the housing and the moving part (e.g., the sensor base).

[0137] Furthermore, the second housing side 1110b may include a first magnet groove 1110bh. And, either the third housing side 1110c or the fourth housing side 1110d may include a second magnet groove 1110ch. For example, the third housing side 1110c may include the second magnet groove 1110ch.

[0138] First, the yoke YK can be mounted in the yoke groove Ykh in the housing 1110. Also, the first sub-magnet M1a can be mounted in the first magnet groove 1110bh, and the second sub-magnet M1b can be mounted in the second magnet groove 1110ch.

[0139] The second groove PH2 may have a second ball part B2 mounted therein. The second ball part B2 may include a second ball B2a and a second ball B2b. A yoke YK may be positioned between the second ball B2a and the second ball B2b.

[0140] A moving plate 1120 may be positioned in the housing 1110. The moving plate 1120 may include a plate hole 1120h corresponding to the yoke YK or the yoke groove Ykh. This may further improve the coupling force between the yoke YK and a holding magnet (described later). Furthermore, the weight of the moving part may be reduced. The plate hole 1120h may overlap with the yoke groove Ykh or the yoke YK in the optical axis direction.

[0141] The first ball part B1 may be located on the moving plate 1120. The first ball part B1 may include a first ball B1a and a second ball B1b. The first ball B1a and the first ball B1b may be overlapped and spaced apart along the third direction (Z-axis direction) or the second axis. The second ball B2a and the second ball B2b may be overlapped and spaced apart along the second direction (Y-axis direction).

[0142] Furthermore, the center of the moving plate 1120 may correspond to or differ from the intersection point between the extension line connecting the plurality of first ball portions B1 and the extension line connecting the plurality of second ball portions B2.

[0143] As another example, the moving plate may have a first ball portion and a second ball portion integrated into one piece. For example, the moving plate may have a structure with a plate and protrusions (corresponding to the ball portions) protruding from the top / bottom of both sides of the plate. For example, the protrusions may correspond to the shape of a portion of a sphere. For example, the protrusions may be semicircular or hemispherical. The first ball portion and the second ball portion may be disposed in grooves formed on the top and bottom surfaces of the moving plate, respectively. The first ball portion may be disposed in a groove disposed on the top surface of the moving plate. The second ball portion may be disposed in a groove disposed on the bottom surface of the moving plate.

[0144] In addition, the holding magnet (described later) may be disposed adjacent to the yoke YK. The holding magnet may overlap the yoke YK in the optical axis direction. This may further improve the coupling strength between the sensor base and the housing, as described above.

[0145] FIG. 6 is an exploded perspective view of a sensor base and a substrate part of a camera actuator according to an embodiment, and FIG. 7 is a view for explaining the connection or assembly between the sensor base and the substrate part in FIG.

[0146] 6 and 7, the sensor base 1130 may include a base protrusion 1130p protruding downward. The base protrusion 1130p may be located on the underside of the sensor base 1130. The sensor base 1130 may also include a first groove PH1 located on the underside. The first groove PH1 may be at least one corresponding to the number of first balls. Similarly, the second groove may also correspond to the number of second balls. The first groove PH1 may be multiple corresponding to the number of first balls, and the base protrusion 1130p may be located between the multiple first grooves PH1. This allows the base protrusion 1130p or the holding magnet HM to be located between adjacent first balls. This allows the first ball and the base protrusion 1130p or the holding magnet HM to overlap in a direction perpendicular to the optical axis direction (e.g., the third direction or Z-axis direction). The holding magnet HM may be located on the base protrusion 1130p. This configuration may reduce the distance between the holding magnet HM and the yoke. In particular, the base protrusion 1130p may overlap the plate hole in a direction perpendicular to the optical axis, thereby further increasing the attractive force between the holding magnet HM and the yoke, i.e., increasing the coupling or retention force between the moving part and the housing.

[0147] Furthermore, the sensor base 1130 may include a base hole or groove 1130h. The base groove 1130 can secure space for a circuit element (such as a gyro sensor) located below the substrate part 1140.

[0148] The substrate unit 1140 may be positioned on the sensor base 1130. The substrate unit 1140 may be coupled to the sensor base 1130 via a coupling member or a joint member, or the substrate unit 1140 may be fastened to the sensor base 1130 in various ways.

[0149] The substrate portion 1140 may include a first region 1140a, a second region 1140b, and a third region 1140c. An image sensor may be disposed in the first region 1140a.

[0150] The second region 1140b may extend upward from the first region 1140a and may overlap the first magnet and the second magnet in the second or third direction.

[0151] The third region 1140c may extend outward from the first region 1140a. The third region 1140c may include at least one bent portion. A connector CN may be located at an end of the third region 1140c. The substrate unit 1140 may be electrically connected to an external electronic device through the connector CN. This will be described in detail later.

[0152] The first region 1140a may be made of a rigid printed circuit board (Rigid PCB), while the second region 1140b and the third region 1140c may be made of a flexible printed circuit board (Flexible PCB) or a rigid-flexible printed circuit board (Rigid-Flexible PCB).

[0153] Additionally, a first coil C1 and a second coil C2 may be located in the second region 1140b. A signal (e.g., current) applied to the first coil C1 may cause the moving unit to move or rotate in a direction perpendicular to the optical axis direction. That is, an OIS function may be implemented. A signal (e.g., current) applied to the second coil C2 may cause the moving unit to move along the optical axis direction. That is, an AF function may be implemented. To this end, the first coil C1 may include a first sub-coil C1a and a second sub-coil C1b. The first sub-coil C1a may be positioned corresponding to one of the first sub-magnet and the second sub-magnet. The second sub-coil C1b may be positioned corresponding to the other of the first sub-magnet and the second sub-magnet. For example, the first sub-coil C1a may correspond to the first sub-magnet. The first sub-coil C1a may overlap the first sub-magnet in the second direction. The second sub-coil C1b may be positioned corresponding to the second sub-magnet. The second sub-coil C1b may overlap the second sub-magnet in the third direction.

[0154] In the case of coupling or assembly between the sensor base 1130 and the substrate unit 1140, the substrate unit 1140 may be mounted on the sensor base 1130 after the holding magnet HM is mounted on the sensor base 1130. The first coil C1 and the second coil C2 may be mounted before or after the substrate unit 1140 is mounted on the sensor base 1130. Furthermore, the gyro sensor gs may be mounted on the substrate unit 1140 before or after the substrate unit 1140 is mounted on the sensor base 1130.

[0155] Also, as described above, the first moving part may be composed of an image sensor and a substrate part coupled to the image sensor.

[0156] The substrate unit 1140 may include a first substrate unit and a second substrate unit. An image sensor may be mounted on the first substrate unit. Specifically, the first substrate unit may include a body unit on which the image sensor is disposed and an extension unit connected to the body unit on which a connector or terminal is disposed. That is, the first substrate unit may include the first region 1140a and the third region 1140c. The body unit may correspond to the first region 1140a, and the extension unit may correspond to the third region 1140c.

[0157] The second substrate portion may have the first coil and the second coil disposed thereon, i.e., may correspond to the second region 1140b described above.

[0158] Thus, the second substrate unit may include a first substrate connected to the first substrate unit on which the first coil C1 is disposed and a second substrate on which the second coil C2 is disposed, i.e., the second region 1140b may include a first substrate on which the first coil C1 is disposed and a second substrate on which the second coil C2 is disposed.

[0159] The first coil C1 may include a first unit coil and a second unit coil. That is, the first unit coil may correspond to the first sub-coil C1a, and the second unit coil may correspond to the second sub-coil C1b. In addition, the first unit coil and the second unit coil may generate a driving force for tilting or rotating the first moving part based on an axis that intersects with each other.

[0160] Furthermore, the first substrate or the second region may include a first unit substrate on which the first unit coil is arranged and a second unit substrate on which the second unit coil is arranged. The first unit substrate and the second unit substrate may not overlap at least partially in the first direction or the second direction. Also, the first unit substrate and the second unit substrate may be offset in the first direction or the second direction. The extension directions of the first unit substrate and the second unit substrate or the extension directions of the long sides of the first and second unit coils may be perpendicular to or intersect each other.

[0161] FIG. 8 is an exploded perspective view of a holder and a filter in a camera actuator according to an embodiment, and FIG. 9 is a view for explaining the connection or assembly between the holder and the filter in FIG.

[0162] 8 and 9, the holder 1150 may include a holder hole 1150h. The holder hole 1150h may be located at the center of the holder 1150. The holder hole 1150h may be located to correspond to the filter FT or the image sensor IS. Furthermore, the holder 1150 may include a receiving groove for receiving a bobbin. This allows the bobbin, which will be described later, to be located in the holder 1150. The filter FT may be located to overlap the holder hole 1150h in the optical axis direction or the first direction (X-axis direction). That is, the filter FT may cover the holder hole 1150h. This prevents foreign matter from entering the image sensor below the holder 1150 through the holder hole 1150h.

[0163] The holder 1150 may include a holder groove 1150g located on the side. The holder groove 1150g may correspond to the position of the second coil. A second magnet may be located on the side of the holder groove 1150g. That is, the strength of the electromagnetic force generated by the second magnet and the second coil may be further increased through the holder groove 1150g. In this case, the first coil located on the substrate may face the first magnet. Also, the second magnet may face the second coil. In other words, since there is no obstacle between the second magnet and the second coil due to the holder groove 1150g, the strength of the electromagnetic force generated by the second coil and the second magnet may be increased. Furthermore, a shaft 1151 may be located in the holder 1150. The shaft 1151 may be a shaft extending along the optical axis direction. The shaft may be located adjacent to the holder groove 1150g.

[0164] The holder 1150 may be coupled or assembled with the shaft 1151 and the filter FT. The filter FT may be made of glass. The shaft 1151 may include a magnetic material. This may create an attractive force between the shaft 1151 and the second magnet. In other words, a bonding force or a retaining force may be created between the holder 1150 and the bobbin. This allows the bobbin to move within the holder 1150 even when the bobbin moves along the optical axis direction.

[0165] FIG. 10 is an exploded perspective view of a bobbin in a camera actuator according to an embodiment, and FIG. 11 is a view illustrating the coupling or assembly between the bobbin and the second magnet in FIG.

[0166] 10 and 11, the bobbin 1160 may be positioned in the holder 1150. The bobbin 1160 may include a carrier groove 1160g formed on a side thereof. The carrier groove 1160g may be positioned adjacent to a second magnet M2 mounted on the side thereof. That is, the second magnet M2 may be positioned on the bobbin 1160. Furthermore, a shaft may be positioned in the carrier groove 1160g. In this case, the second magnet M2 may overlap with the shaft in a direction perpendicular to the optical axis (e.g., a third direction).

[0167] Furthermore, the bobbin 1160 may include a carrier hole 1160h, in which the above-mentioned lens may be located.

[0168] FIG. 12 is a diagram illustrating the assembly of the camera actuator according to the embodiment.

[0169] 12, the sensor base 1130, the substrate 1140, the holder 1150, and the bobbin 1160 may be positioned or mounted on the housing 1110 on which the moving plate 1120 is mounted. As a result, the moving part may be assembled or mounted on the housing 1110, which is the fixed part. Then, a clamp CL may be positioned in the inner groove of the housing 1110. In one embodiment, the clamp CL may be disposed between the extension part (third region) and the holder. After the clamp CL is disposed in the inner groove, a cover 1170 may enclose the outside of the housing 1110. The cover 1170 may also include a cover groove 1170g disposed on one side. The cover groove 1170g may be positioned corresponding to the position of the third region of the substrate 1140. That is, a space for the substrate 1140 to extend outward may be formed through the cover groove 1170g.

[0170] FIG. 13 is a diagram for explaining one drive of the camera actuator according to the embodiment, and FIG. 14 is a diagram showing the moving part and the fixed part disassembled during one drive of the camera actuator according to the embodiment.

[0171] Referring to Figures 13 and 14, the movable part MP can rotate in a direction (second direction or third direction) perpendicular to the optical axis direction (X axis direction) or based on a perpendicular direction (second direction or third direction).

[0172] For example, the moving part MP can rotate (Yaw) in a direction perpendicular to the optical axis direction (e.g., second direction), and can also rotate (Pitch) in a direction perpendicular to the optical axis direction (e.g., third direction).

[0173] In addition, in the case of rotation (Yaw), the moving plate can also rotate. More specifically, since the second ball part B2 attached to the housing 1110 is arranged along the second direction (Y-axis direction) or the first axis, the moving plate 1120 can also rotate in the rotation (Yaw) based on the second direction.

[0174] In the case of rotation (Pitch), the moving plate does not rotate. More specifically, since the first ball part B1 disposed between the moving plate 1120 and the sensor base 1130 is disposed in the third direction (Z-axis direction), the moving plate 1120 does not rotate in the case of rotation (Pitch) based on the third direction.

[0175] Such rotation (Yaw, Pitch) can be realized by the electromagnetic force between the first magnet M1 and the first coil of the substrate unit 1140. The substrate unit 1140 can rotate (Yaw, Pitch) due to the electromagnetic force generated in the optical axis direction or the opposite direction to the optical axis direction at the position of the first coil.

[0176] Figure 15 is a view taken along line AA' in Figure 1, Figure 16 is a view taken along line BB' in Figure 1, Figure 17 is an oblique view of Figure 16, Figure 18 is an oblique view of the base section of a camera actuator in accordance with an embodiment, Figure 19a is an oblique view different from Figure 18, Figure 19b is an oblique view of a moving plate in accordance with an embodiment, Figure 19c is another oblique view of a moving plate in accordance with an embodiment, Figure 19d is a view illustrating the underside of the sensor base of the moving part in accordance with an embodiment, and Figure 19e is a view illustrating the inner bottom surface of the fixed part (or housing) in accordance with an embodiment.

[0177] 15 to 17, the substrate unit 1140 may include a first region 1140a, a second region 1140b, and a third region 1140c. In this case, the first region 1140a may overlap the image sensor IS and the filter FT in the optical axis direction or the first direction (X-axis direction).

[0178] Furthermore, the first coil C1 and the first magnet M1 may overlap in the second direction (Y-axis direction). Also, a position detection sensor (for example, a Hall sensor) may be disposed inside the coil according to the embodiment.

[0179] Furthermore, the first coil C1 and the first magnet M1 (particularly, the first sub-coil and the first sub-magnet) may overlap the bobbin 1160 and the holder 1150 in the second direction.

[0180] The holding magnet HM may overlap the yoke YK in the optical axis direction or the first direction (X-axis direction). Furthermore, the yoke YK and the holding magnet HM may be located between adjacent second ball parts B2. As an example, adjacent second ball parts B2 may overlap the yoke YK and the holding magnet HM in the second direction (Y-axis direction).

[0181] The second region 1140b may extend upward from the first region 1140a of the substrate unit 1140. The third region 1140c may extend outward from the first region 1140a. For example, the third region 1140c may extend in the second direction (Y-axis direction).

[0182] The third region 1140c according to the embodiment may include a first bending portion BP1 adjacent to the outside of the first region 1140a and bent in the optical axis direction, a second bending portion BP2 connected to one end of the first bending portion BP1 and bent outward, and a third bending portion BP3 connected to one end of the second bending portion BP2 and bent in a direction perpendicular to the optical axis direction (second direction or third direction).

[0183] First, even if the substrate unit 1140 moves, tilts, or rotates in a direction perpendicular to the optical axis due to the OIS function, deformation of the shape or deterioration of reliability can be suppressed by the third bending unit BP3.

[0184] The first bending portion BP1 allows the substrate unit 140 to be easily extended upward without further increasing the length in the first direction of the substrate unit 140. The second bending portion BP2 may be located between the upper and lower surfaces of the camera actuator. The first bending portion BP1 may also be located between the upper and lower surfaces of the camera actuator. In other words, the tilting or moving substrate unit can be extended outward while maintaining the compactness of the camera actuator.

[0185] In addition, a clamp CL may be positioned in the inner groove 1110ag. The clamp CL may be spaced apart (gap 1, gap 2) from the substrate unit 1140 in any of the first direction (X-axis direction), second direction (Y-axis direction), and third direction. In other words, the clamp CL may be spaced apart from the substrate unit 1140 in the optical axis direction or a direction perpendicular to the optical axis direction. That is, the region (third region) of the substrate unit 1140 having the associative circuit board for tilting or rotating the moving unit may have at least one bent portion. In this case, the clamp CL may maintain the shape of the bent portion (first bent portion or second bent portion). The clamp CL may be an injection molded object made of a non-magnetic material or resin, etc.

[0186] 18 and 19a, the first coil C1 may be located in the second region 1140b. The second coil C2 may also be located in the second region 1140b. The Hall sensors HS1 and HS2 may also be located in the second region 1140b. The image sensor IS may be located on the first region 1140a. The gyro sensor gs may be located below the first region 1140a. For example, the gyro sensor gs and the image sensor may be disposed on opposite sides (e.g., upper and lower sides) of the first region 1140a. The moving plate 1120 may include a groove formed on its side to minimize the overlap area with the gyro sensor gs in the optical axis direction. For example, the base groove 1130h and the moving plate 1120 may be at least partially offset in the optical axis direction.

[0187] Furthermore, the gyro sensor gs and the image sensor IS can be located on different surfaces of the first region 1140a. This can improve space efficiency. That is, the camera actuator according to this embodiment can easily provide space for movement or tilt of the substrate unit 1140 and the elements mounted on the substrate unit (gyro sensor, image sensor, coil, Hall sensor, and other circuit elements). Further referring to FIGS. 19a to 19e, the moving plate 1120 can include a plate hole 1120h located in the center. The plate hole 1120h can at least partially overlap with the base protrusion 1130p in the optical axis direction (X-axis direction).

[0188] The base protrusion 1130p can penetrate at least a portion of the plate hole 1120h. Furthermore, the moving plate 1120 can include an inwardly recessed groove 1120g on the edge. This can reduce the weight of the moving plate 1120 and easily ensure space for arranging elements mounted on the sensor base 1130 or the lower part of the substrate part 1140.

[0189] Furthermore, first mounting grooves 1120ah may be positioned on the upper surface 1120a of the moving plate 1120, spaced apart in the third direction (Z-axis direction). The first mounting grooves 1120ah may be arranged opposite each other with respect to the plate hole 1120h. Alternatively, multiple first mounting grooves 1120ah may be arranged symmetrically with respect to the center of the plate hole 1120h. A first ball portion B1 may be mounted in the first mounting groove 1120ah. The first ball portion B1 and the first mounting groove 1120ah may be joined using a bonding material (e.g., epoxy, grease), etc. Furthermore, the bisecting point between the first mounting grooves 1120ah may correspond to the center of the moving plate or the plate hole. This may improve rotation accuracy. The first mounting grooves 1120ah may overlap in the third direction. Multiple first mounting grooves 1120ah may be spaced apart from each other in the third direction.

[0190] Second mounting grooves 1120bh may be located on the lower surface 1120b of the moving plate 1120. The second mounting grooves 1120bh may be arranged opposite each other with respect to the plate hole 1120h. Alternatively, multiple second mounting grooves 1120bh may be arranged symmetrically with respect to the center of the plate hole 1120h. A second ball portion B2 may be mounted in the second mounting groove 1120bh. The second ball portion B2 and the second mounting groove 1120bh may be joined using a bonding material (e.g., epoxy, grease, etc.). The bisecting point between the second mounting grooves 1120bh may correspond to the center of the moving plate or the plate hole. This may improve rotation accuracy. The multiple second mounting grooves 1120bh may be spaced apart from each other in the second direction (Y-axis direction). Furthermore, the second mounting grooves 1120bh may overlap each other in the second direction (Y-axis direction).

[0191] The holding magnet HM may be mounted in a groove formed in the base protrusion 1130p. The sensor base 1130 may include a first groove PH1 disposed on its bottom surface. The number of first grooves PH1 may be at least one corresponding to the number of first balls. The first groove PH1 may contact the first balls. The first grooves PH1 may overlap along the third direction to correspond to the first balls. The first grooves PH1 may be arranged side by side along the third direction. The first groove PH1 may contact the first ball portion B1 at at least some points. The first groove PH1 may have various structures. For example, the first groove PH1 may have at least one surface (bottom surface or inclined surface) corresponding to the number of contact points with the first balls. For example, the first groove PH1 may have one bottom surface BS and multiple inclined surfaces CS. As the number of inclined surfaces CS increases, the number of contact points between the first groove PH1 and the first ball portion B1 may also increase.

[0192] Furthermore, a yoke groove Ykh may be formed on the bottom surface of the inner surface of the fixed portion or housing 1110. A yoke may be disposed in the yoke groove Ykh. Furthermore, the yoke groove Ykh may at least partially overlap with the base protrusion 1130p in the optical axis direction, thereby improving the attractive force. Furthermore, a second groove PH2 may be formed on the bottom surface of the inner surface of the fixed portion. The second grooves PH2 may be disposed so as to be aligned in the second direction (Y-axis direction). The second grooves PH2 may be disposed spaced apart from each other in the second direction and may overlap in the second direction. A yoke groove YKh may be disposed between the spaced apart second grooves PH2. The center of the yoke groove YKh may be located on the bisector of the second groove PH2.

[0193] Furthermore, a second groove PH2 may also be included. It may have various structures. For example, the second groove PH2 may have at least one surface (bottom surface or inclined surface) corresponding to the number of contact points with the first ball. For example, the second groove PH2 may have one bottom surface and multiple inclined surfaces. As the number of inclined surfaces increases, the number of contact points between the second groove PH2 and the second ball portion B2 may also increase.

[0194] 20 is a view taken along the line CC' in FIG. 1, and FIG. 21 is a side view of the camera actuator according to the embodiment with the cover and housing removed.

[0195] 20 and 21, a temperature sensor TS may be further mounted on the substrate unit 1140. In this case, the temperature sensor TS may be disposed below the first region 1140a of the substrate unit 1140. The sensor base 1130 may further include a groove or recess to ensure a space for the temperature sensor TS to be located.

[0196] Furthermore, the holder 1150 disposed on the sensor base 1130 may include a groove 1150IG on the bottom surface thereof to reduce contact with circuit elements disposed on the first region 1140a of the substrate unit 1140. As a result, contact between the circuit elements on the substrate unit 1140 and the holder 1150 and a decrease in reliability due to high temperatures can be reduced.

[0197] Furthermore, the holder may further include a groove on the bottom surface to ensure a predetermined distance in the optical axis direction from the circuit element (e.g., capacitor) on the first region, thereby minimizing interference between the circuit element and the holder.

[0198] Furthermore, the weight of the camera actuator can be reduced through grooves formed in the holder 1150 and the sensor base 1130 .

[0199] Furthermore, the sensor base 1130 may have a double step to ensure space for the third region 1140c of the substrate unit 1140. That is, the sensor base 1130 may further include a groove connected to the base hole 1130h. This configuration may prevent or reduce impact between the sensor base 1130 and the flexible third region 1140c when the substrate unit 1140 is tilted.

[0200] Furthermore, the third region 1140c and the gyro sensor gs may overlap in the optical axis direction, which may improve space efficiency for circuit elements.

[0201] The clamp CL can then overlap the third region 1140c in the second direction.

[0202] FIG. 22 is a view explaining the maintaining force for another drive in the camera actuator according to the embodiment, FIG. 23 is a view explaining another drive in the camera actuator according to the embodiment, FIG. 24 is a view taken along line DD' in FIG. 23, and FIG. 25 is a view taken along line EE' in FIG. 23.

[0203] 22 to 25, the bobbin 1160 can move along the optical axis direction. At this time, the shaft 1151 disposed in the holder 1150 can be positioned adjacent to the second magnet M2 disposed in the bobbin 1160. As described above, the shaft 1151 and the second magnet M2 can overlap in the third direction. The shaft 1151 and the second magnet M2 can generate an attractive force between each other. As a result, the coupling force (e.g., attractive force) between the holder 1150 coupled to the shaft 1151 and the bobbin 1160 coupled to the second magnet M2 can be maintained. That is, even if the bobbin 1160 moves along the optical axis direction in the holder 1150, the bobbin 1160 and the holder 1150 can maintain their coupling with each other.

[0204] The second magnet M2 may be disposed between the second coil C2 and the shaft 1151. That is, the second magnet M2 may face the second coil C2. In this case, the second magnet M2 may be located inside the second coil C2. In this case, the inside may correspond to the direction toward the optical axis, and the outside may correspond to the opposite direction of the inside.

[0205] In addition, the substrate part (particularly the second region) may be located outside the second coil. As a result, the substrate part, the second coil C2, and the second magnet M2 may be located inward in this order. In addition, as an example, the second region 1140b may be located between the first coil C1 and the first magnet M1. The second coil C1 may also be located inside the second region 1140b. In this case, the first coil C1 and the first magnet M1 may be spaced apart from each other. In addition, the second region 1140b or the substrate part 1140 may be located between the first coil C1 and the first magnet M1.

[0206] Furthermore, the first coil C1 and the first magnet M1 may overlap in a direction perpendicular to the optical axis. Furthermore, the second region 1140b or the substrate portion 1140 may be located between the Hall sensor and the first magnet M1. In other words, the first magnet M1 may be located outside the second region 1140b and the first coil C1. And the second region 1140b may be located outside the first coil C1.

[0207] FIG. 26 is a plurality of perspective views of a camera actuator holder according to an embodiment.

[0208] 26, the holder 1150 may include a shaft hole or groove into which the shaft 1151 is attached. The shaft groove may be located adjacent to the holder groove 1150g, thereby increasing the attractive force between the second magnet and the shaft.

[0209] FIG. 27 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0210] As shown in FIG. 27, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided on the rear surface.

[0211] The camera module 1000 may include an image capture function and an autofocus function, for example, the camera module 1000 may include an image-based autofocus function.

[0212] The camera module 1000 processes still or video image frames acquired by an image sensor in a photography mode or a video call mode.

[0213] The processed image frame can be displayed on a predetermined display unit or stored in a memory.A camera (not shown) can also be disposed on the front of the mobile terminal body.

[0214] For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and the first camera module 1000A may be capable of implementing an OIS together with an AF function.

[0215] The flash module 1530 may include a light emitting element for emitting light therein, and may be activated by the camera of the mobile terminal or by user control.

[0216] The autofocus device 1510 may include one in a package of surface emitting laser elements as the light emitter.

[0217] The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 may be used primarily in conditions where the image-based autofocus function of the camera module 1000 is degraded, such as in close proximity of less than 10 m or in dark environments.

[0218] The autofocus device 1510 may include a light emitting portion including a vertical cavity surface emitting laser (VCSEL) semiconductor element and a light receiving portion such as a photodiode that converts optical energy into electrical energy.

[0219] FIG. 28 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0220] For example, FIG. 28 is an external view of a vehicle equipped with a vehicle driving assistance device to which a camera module 1000 according to an embodiment is applied.

[0221] 28, a vehicle 700 according to an embodiment may include wheels 13FL and 13FR that are rotated by a power source, and a predetermined sensor. The sensor may be, but is not limited to, a camera sensor 2000.

[0222] The camera 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 according to the embodiment can acquire image information through the camera sensor 2000 that captures a front image or a surrounding image, and can determine an unidentified lane situation using the image information and generate a virtual lane when the lane is unidentified.

[0223] For example, the camera sensor 2000 may capture an image in front of the vehicle 700 to acquire a front image, and a processor (not shown) may analyze an object included in the front image to acquire image information.

[0224] For example, if an object such as a lane marking, an adjacent vehicle, an obstacle, or an indirect road marking such as a median strip, a curb, or a roadside tree is captured in the image captured by the camera sensor 2000, the processor can detect such an object and include it in the image information. At this time, the processor can obtain distance information from the detected object through the camera sensor 2000 to further complement the image information.

[0225] The image information may be information about an object captured in an image. The camera sensor 2000 may include an image sensor and an image processing module.

[0226] The camera sensor 2000 can process still or moving images obtained by an image sensor (eg, CMOS or CCD).

[0227] The image processing module processes still or moving images acquired through the image sensor to extract necessary information and transmit the extracted information to a processor.

[0228] In this case, the camera sensor 2000 may include, but is not limited to, a stereo camera to improve the accuracy of measuring the object and further secure information such as the distance between the vehicle 700 and the object.

[0229] The above description has focused on the embodiments, but these are merely examples and are not intended to limit the present invention. Those skilled in the art will recognize that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the present invention. For example, each component specifically illustrated in the embodiments can be modified and implemented. Differences related to such modifications and applications should be construed as being included within the scope of the present invention as defined in the appended claims.

Claims

1. Fixed part; a moving plate disposed on the fixed part; a first moving part disposed on the moving plate; a first driving unit that tilts the first moving unit about at least one of a first axis and a second axis; a first ball portion disposed between the moving plate and the first moving portion; and a second ball portion disposed between the moving plate and the fixed portion; The first driving unit includes a first coil disposed on the first moving unit and a first magnet disposed on the fixed unit.

2. The camera device according to claim 1 , wherein the first moving portion includes an image sensor and a substrate portion coupled to the image sensor.

3. a second moving part disposed within the first moving part; and a second driving unit that moves the second moving unit in the optical axis direction; the second driving unit includes a second coil disposed on the first moving unit and a second magnet disposed on the second moving unit; The camera device according to claim 2 , wherein the substrate portion includes a first substrate portion to which the image sensor is coupled and a second substrate portion to which the first coil and the second coil are disposed.

4. The camera device according to claim 3 , wherein the first substrate portion includes: a body portion on which the image sensor is disposed; and an extension portion connected to the body portion and on which a connector or a terminal is disposed.

5. The camera device according to claim 4 , wherein the second substrate unit includes a first substrate connected to the first substrate unit and on which the first coil is disposed, and a second substrate on which the second coil is disposed.

6. the first coil includes a first unit coil and a second unit coil, The camera device according to claim 5 , wherein the first substrate includes a first unit substrate on which the first unit coil is arranged and a second unit substrate on which the second unit coil is arranged.

7. The camera device according to claim 2 , further comprising: a sensor base disposed between the moving plate and the base portion.

8. the fixed portion includes a cover that houses the first moving portion; The camera device according to claim 1 , wherein the cover includes a first cover coupled to the first magnet and a second cover coupled to the first cover.

9. cover; a moving plate disposed within the cover; a base portion disposed on the moving plate; an image sensor disposed on the substrate portion; a holder disposed on the image sensor; a bobbin disposed within the holder; a first magnet disposed on the cover; a second magnet disposed on the bobbin; a first coil disposed on the substrate portion and facing the first magnet, and a second coil facing the second magnet; a first ball portion disposed between the moving plate and the cover; and a second ball portion disposed between the moving plate and the base portion.

10. In paragraph 9: the first ball portion is disposed in a second axial direction; The camera device according to claim 9 , wherein the second ball portion is disposed in a first axial direction.

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