Camera actuator, lens transport device, and camera device including same

Abstract

An embodiment of the present invention discloses a camera device including a housing, a first lens assembly and a second lens assembly that move in an optical axis direction based on the housing, an optical drive unit including a first drive unit that moves the first lens assembly and a second drive unit that moves the second lens assembly, and a first Hall sensor adjacent to the first drive unit and a second Hall sensor adjacent to the second lens assembly, wherein at least a portion of the first Hall sensor and the second Hall sensor do not overlap each other in a direction perpendicular to the optical axis direction.

Description

[Technical field]

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

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

[0003] On the other hand, the higher the pixel count of an image sensor, the higher the resolution and the smaller the pixel size, but the smaller the pixel, the less light it can receive in the same amount of time. Therefore, the higher the pixel count of a camera, the worse the image blur caused by camera shake caused by a slow shutter speed in a dark environment. A typical example of image stabilization (IS) technology is optical image stabilizer (OIS), which corrects movement by changing the path of light.

[0004] According to a general OIS technology, the movement of the camera is detected by a gyrosensor or the like, and the lens is tilted or moved based on the detected movement, or the camera device including the lens and the image sensor is tilted or moved. When the lens or the camera device including the lens and the image sensor is tilted or moved for OIS, it is necessary to secure additional space around the lens or the camera device for the tilt or movement.

[0005] On the other hand, the actuator for the OIS may be arranged around the lens. In this case, the actuator for the OIS may include an actuator responsible for tilting two axes perpendicular to the optical axis Z, i.e., an actuator responsible for tilting the X-axis and an actuator responsible for tilting the Y-axis.

[0006] However, depending on the needs of ultra-thin and ultra-compact camera devices, there may be significant spatial constraints on the placement of an actuator for the OIS, making it difficult to secure sufficient space for the lens or the camera device itself including the lens and image sensor to tilt or move for the OIS. Also, the higher the pixel count of a camera, the larger the lens size is preferred to increase the amount of light received, but there may be a limit to how large the lens size can be due to the space occupied by the actuator for the OIS.

[0007] Furthermore, when a camera device includes a zoom function, an AF function, and an OIS function, the magnet for OIS and the magnet for AF or Zoom are placed close to each other, which can cause magnetic field interference.

[0008] Furthermore, within a camera device, camera actuators for AF and zooming are provided with long strokes to improve performance, but there is a problem in that magnetic field interference occurs between adjacent magnets and coils.

[0009] Also, there is a problem that magnetic field interference (eg, cross talk) with the Hall sensor makes it difficult to accurately measure the position of the lens assembly. Summary of the Invention [Problem to be solved by the invention]

[0010] The technical problem to be solved by the present invention is to provide a camera actuator and a camera device having a drive unit that provides a long stroke (long movement distance) during AF / ZOOM.

[0011] Another object of the present invention is to provide a camera actuator and a camera device that can accurately detect the movement of a lens assembly by blocking as much as possible the magnetic field that generates crosstalk in the Hall sensor.

[0012] In addition, the present invention can provide a camera actuator and a camera device in which magnetic field interference between opposing magnets, coils, and Hall sensors is minimized.

[0013] The problems to be solved by the embodiments are not limited to these, and may also include the means for solving the problems described below and the objectives and effects that can be grasped from the embodiments. [Means for solving the problem]

[0014] A camera device according to an embodiment of the present invention includes a housing, a first lens assembly and a second lens assembly that move in an optical axis direction based on the housing, an optical drive unit including a first drive unit that moves the first lens assembly and a second drive unit that moves the second lens assembly, and a first Hall sensor adjacent to the first drive unit and a second Hall sensor adjacent to the second lens assembly, wherein at least a portion of the first Hall sensor and the second Hall sensor do not overlap each other in a direction perpendicular to the optical axis direction.

[0015] The ratio of an area of ​​the first Hall sensor to an area of ​​the second Hall sensor overlapping in the horizontal direction may be 1:0.5 or less.

[0016] The first driving unit may include a first coil and a first magnet facing the first coil, and the second driving unit may include a second coil and a second magnet facing the second coil.

[0017] When the first lens assembly and the second lens assembly move to a maximum in the optical axis direction, the first Hall sensor may face the first magnet, and the second Hall sensor may face the second magnet.

[0018] When the first lens assembly and the second lens assembly move to their maximum in the optical axis direction, the minimum distance between the first Hall sensor and the second Hall sensor may be greater than the maximum distance in the horizontal direction between the first coil and the second coil.

[0019] The first coil and the second coil may be disposed symmetrically with respect to an optical axis.

[0020] The second lens assembly may include an image sensor, the second lens assembly being positioned closer to the image sensor than the first lens assembly.

[0021] The second Hall sensor may be positioned closer to the image sensor than the first Hall sensor.

[0022] The first coil may include a first sub-coil and a second sub-coil arranged to overlap each other in the optical axis direction, and the second coil may include a third sub-coil and a fourth sub-coil arranged to overlap each other in the optical axis direction.

[0023] The first sub-coil may be disposed opposite the third sub-coil with respect to an optical axis, and the second sub-coil may be disposed opposite the fourth sub-coil with respect to the optical axis.

[0024] The first Hall sensor may be disposed within the first sub-coil, and the second Hall sensor may be disposed within the fourth sub-coil.

[0025] A distance traveled by the second lens assembly in the direction of the optical axis may be greater than a distance traveled by the first lens assembly in the direction of the optical axis. Effect of the Invention

[0026] The present invention can provide a camera actuator and a camera device having a drive unit that provides a long stroke (long movement distance) during AF / ZOOM.

[0027] Furthermore, the present invention can provide a camera actuator and a camera device that can accurately detect the movement of a lens assembly by blocking as much as possible the magnetic field that generates crosstalk in the Hall sensor.

[0028] In addition, the present invention can provide a camera actuator and a camera device that minimize magnetic field interference between opposing magnets, coils, and Hall sensors.

[0029] The various and beneficial advantages and effects of the present invention are not limited to the above-mentioned contents, but will be more easily understood in the course of describing specific embodiments of the present invention. [Brief description of the drawings]

[0030] [Figure 1] 1 is a perspective view of a camera device according to an embodiment.

[0031] [Diagram 2] 1 is an exploded perspective view of a camera device according to an embodiment of the present invention;

[0032] [Diagram 3] FIG. 2 is a cross-sectional view taken along line AA′ in FIG.

[0033] [Figure 4] FIG. 2 is an exploded perspective view of a first camera actuator according to the embodiment.

[0034] [Diagram 5] FIG. 2 is a perspective view of a first camera actuator according to an embodiment with a first shielding can and a substrate removed.

[0035] [Figure 6a] FIG. 6 is a cross-sectional view taken along line BB' in FIG.

[0036] [Figure 6b]FIG. 6 is a cross-sectional view taken along the line CC′ in FIG. 5.

[0037] [Figure 7a] FIG. 11 is an exploded perspective view of a first camera actuator according to another embodiment.

[0038] [Figure 7b] FIG. 11 is a cross-sectional view of a first camera actuator according to another embodiment.

[0039] [Figure 7c] FIG. 11 is another cross-sectional view of the first camera actuator according to the other embodiment.

[0040] [Figure 8] FIG. 4 is a perspective view of a second camera actuator according to the embodiment.

[0041] [Figure 9] FIG. 2 is an exploded perspective view of a second camera actuator according to the embodiment.

[0042] [Figure 10a] FIG. 9 is a cross-sectional view taken along the line DD' in FIG.

[0043] [Figure 10b] FIG. 2 is a perspective view showing a first optical drive unit, a moving assembly, and first and second guide units in a second camera actuator according to an embodiment.

[0044] [Figure 10c] 13 is a diagram showing a first state of the first optical drive unit, the moving assembly, and the first and second guide units in the second camera actuator. FIG.

[0045] [Figure 10d] 13 is a diagram showing a second state of the first optical drive unit, the moving assembly, and the first and second guide units in the second camera actuator. FIG.

[0046] [Figure 10e] FIG. 13 is a diagram showing a third state of the first optical drive unit, the moving assembly, and the first and second guide units in the second camera actuator.

[0047] [Figure 10f] 13 is a diagram showing the maximum movement state of the first lens assembly and the second lens assembly in the second camera actuator. FIG.

[0048] [Fig. 10g-10h] FIG. 11 is a diagram showing an example of movement of a coil and a magnet in a first driving unit.

[0049] [Figure 11] FIG. 13 is an exploded perspective view of the drive of the first lens assembly.

[0050] [Figure 12] FIG. 13 is an exploded perspective view of the drive of the second lens assembly.

[0051] [Figure 13] 11A to 11C are diagrams illustrating the driving of a second camera actuator according to the embodiment.

[0052] [Figure 14] FIG. 2 is a schematic diagram showing a circuit board according to an embodiment.

[0053] [Figure 15] 11 is a perspective view of a partial configuration of a second camera actuator according to the embodiment. FIG.

[0054] [Figure 16] 4A and 4B are diagrams showing a first optical drive coil, a first optical drive magnet, and a yoke according to an embodiment.

[0055] [Figure 17] 6A to 6C are diagrams illustrating the movement of a first optical driving magnet by a second driving unit according to the embodiment.

[0056] [Figure 18] 5A to 5C are diagrams illustrating the movement of second and third lens assemblies according to the embodiment.

[0057] [Figure 19] 1 is a block diagram showing a configuration of a camera device according to an embodiment of the present invention.

[0058] [Figure 20] 20 is a block diagram showing a detailed configuration of a position sensor unit in FIG. 19.

[0059] [Figure 21] FIG. 4 is a diagram for explaining a connection relationship of a sensor unit according to an embodiment of the present invention.

[0060] [Figure 22] 13 is a diagram for explaining a connection relationship of a sensor unit according to another embodiment of the present invention. FIG.

[0061] [Diagram 23] 2 is a configuration diagram of a sensor unit, a driver, a drive coil, and a drive magnet according to the embodiment. FIG.

[0062] [Figure 24] 1 is a perspective view of a mobile terminal to which a camera device according to an embodiment is applied;

[0063] [Diagram 25] 1 is a perspective view of a vehicle to which a camera device according to an embodiment is applied; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0064] Since the present invention can be modified in various ways and can take various embodiments, specific embodiments are illustrated in the drawings and described. However, this 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 within the spirit and technical scope of the present invention.

[0065] Terms including ordinal numbers such as first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another. For example, a second component may be referred to as a first component, and similarly, a first component may be referred to as a second component, without departing from the scope of the invention. The term and / or includes any combination of multiple associated listed items or multiple associated listed items.

[0066] When an element is said to be "coupled" or "connected" to another element, it should be understood that it may be directly coupled or connected to the other element, but there may also be other elements between them. On the other hand, when an element is said to be "directly coupled" or "directly connected" to another element, it should be understood that there are no other elements between them.

[0067] The terms used in this application are merely used to describe certain embodiments and are not intended to limit the present invention. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this application, the terms "include" 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 presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0068] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms 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.

[0069] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or corresponding components are designated by the same reference numerals, and redundant description thereof will be omitted.

[0070] FIG. 1 is a perspective view of a camera device according to an embodiment, FIG. 2 is an exploded perspective view of the camera device according to an embodiment, and FIG. 3 is a cross-sectional view taken along line AA' in FIG.

[0071] 1 and 2, the camera device 1000 according to the embodiment may include a cover CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. Here, the first camera actuator 1100 may be referred to as a "first actuator," and the second camera actuator 1200 may be referred to as a "second actuator."

[0072] The cover CV can cover the first camera actuator 1100 and / or the second camera actuator 1200. The cover CV can improve the coupling force between the first camera actuator 1100 and the second camera actuator 1200.

[0073] Furthermore, the cover CV may be made of a material that blocks electromagnetic waves, which makes it easy to protect the first camera actuator 1100 and the second camera actuator 1200 within the cover CV.

[0074] The first camera actuator 1100 may also be an OIS (Optical Image Stabilizer) actuator.

[0075] According to an embodiment, the first camera actuator 1100 can change the path of light. According to an embodiment, the first camera actuator 1100 can change the path of light vertically by an internal optical member (e.g., a mirror or a prism). With this configuration, even if the thickness of the mobile terminal is reduced, the lens configuration with a reduced thickness due to the change in the path of light is disposed within the mobile terminal, so that the magnification, autofocus (AF) and OIS functions can be achieved.

[0076] The first camera actuator 1100 can change the light path from a first direction to a third direction. The optical axis direction in this specification is the third direction or Z-axis direction, which corresponds to the direction of travel of the light provided to the image sensor.

[0077] Furthermore, the first camera actuator 1100 may include a lens disposed in a predetermined lens barrel (not shown). The lens may also include a fixed focal length lens. A fixed focal length lens is also called a "single focal length lens" or a "single lens."

[0078] The second camera actuator 1200 may be disposed at the rear end of the first camera actuator 1100. The second camera actuator 1200 may be coupled to the first camera actuator 1100. In addition, the coupling therebetween may be performed in various ways.

[0079] The second camera actuator 1200 may be a zoom actuator or an auto focus actuator. For example, the second camera actuator 1200 may support one or more lenses and perform an auto focus function or a zoom function by moving the lenses according to a control signal from a predetermined control unit.

[0080] The circuit board 1300 may be disposed at the rear end of the second camera actuator 1200. The circuit board 1300 may be electrically connected to the second camera actuator 1200 and the first camera actuator 1100. Also, there may be a plurality of circuit boards 1300.

[0081] Such a circuit board 1300 may be connected to the second housing of the second camera actuator 1200 and may be provided with an image sensor. Furthermore, a base including a filter may be mounted on the circuit board 1300. This will be described later.

[0082] The camera device according to the embodiment may be composed of a single or multiple camera devices. For example, the multiple camera devices may include a first camera device and a second camera device. As described above, the camera device may be used interchangeably with the terms "camera module," "camera device," "imaging device," "imaging module," "imaging equipment," and the like. Furthermore, the camera actuator means a configuration that moves an optical member, a lens, and the like. The camera actuator may or may not include an optical member, a lens, and the like. In the following, the camera actuator will be described on the basis that it includes a lens. Furthermore, the camera actuator may be used interchangeably with the terms "lens moving device," "lens transport device," "optical member moving device," "zoom lens transport device," and the like. The first camera actuator may be used interchangeably with the term "first lens transport device," and the second camera actuator may be used interchangeably with the term "second lens transport device." Furthermore, although the actuator is a device that moves an optical member such as a lens, it will be described herein as a device that includes a lens.

[0083] Additionally, the first camera arrangement may include a single actuator or multiple actuators. For example, the first camera arrangement may include a first camera actuator 1100 and a second camera actuator 1200.

[0084] The second camera device may include an actuator (not shown) disposed in a predetermined housing (not shown) and capable of driving the lens unit. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, or the like, and may be of various types, such as an electrostatic type, a thermal type, a bimorph type, or an electrostatic force type, but is not limited thereto. The camera actuator in this specification may also be referred to as an actuator, or the like. A camera device consisting of a plurality of camera devices may be mounted in various electronic devices, such as a mobile terminal.

[0085] Referring to FIG. 3, a camera device according to an embodiment may include a first camera actuator 1100 that performs an OIS function, and a second camera actuator 1200 that performs a zooming function and an AF function.

[0086] Light may enter the camera device through an opening region located on the top surface of the first camera actuator 1100. That is, light may enter the inside of the first camera actuator 1100 along the optical axis direction (e.g., the X-axis direction), and the optical path may be changed to a vertical direction (e.g., the Z-axis direction) by an optical member. The light may also pass through the second camera actuator 1200 and enter the image sensor IS located at one end of the second camera actuator 1200 (PATH).

[0087] In this specification, the bottom surface means one side in the first direction. The first direction is the X-axis direction in the drawing, and can be mixed with the second axis direction, etc. The second direction is the Y-axis direction in the drawing, and can be mixed with the first axis direction, etc. The second direction is a direction perpendicular to the first direction. The third direction is the Z-axis direction in the drawing, and can be mixed with the third axis direction, etc. A direction 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, and can be tilted by the second camera actuator. A detailed explanation of this will be given later. In the following explanation of the second camera actuator 1200, the optical axis direction corresponds to the optical path and is the third direction (Z-axis direction), and the following explanation will be based on this.

[0088] Also, with this configuration, the camera device according to the embodiment can improve the spatial limitations of the first camera actuator and the second camera actuator by changing the light path. That is, the camera device according to the embodiment can expand the light path by minimizing the thickness of the camera device in response to the change in the light path. Furthermore, it should be understood that the second camera actuator can provide a high range of magnification by controlling the focus, etc., with the expanded light path.

[0089] In addition, the camera device according to the embodiment can realize OIS by controlling the optical path using the first camera actuator, thereby minimizing the occurrence of decentering and tilting and obtaining the best optical characteristics.

[0090] Further, the second camera actuator 1200 may include an optical system and a lens driving unit. For example, the second camera actuator 1200 may include at least one of a first lens assembly, a second lens assembly, a third lens assembly, and a guide pin.

[0091] Furthermore, the second camera actuator 1200 includes a coil and a magnet and can perform a high magnification zooming function.

[0092] For example, the first lens assembly and the second lens assembly may be moving lenses that move through a coil, a magnet, and a guide pin, and the third lens assembly may be a fixed lens, but are not limited thereto. For example, the third lens assembly may function as a condenser that focuses light at a specific position, and the first lens assembly may function as a variator that refocuses an image focused by the third lens assembly, which is a condenser, at another position. Meanwhile, in the first lens assembly, the distance to the subject or the image distance may change significantly, and the magnification may change significantly, so that the first lens assembly, which is a variator, may play an important role in changing the focal length or magnification of the optical system. Meanwhile, the image point focused by the first lens assembly, which is a variator, may differ slightly depending on the position. Thus, the second lens assembly may perform a position compensation function for the image focused by the variator. For example, the second lens assembly may function as a compensator that accurately focuses an image point formed by the first lens assembly, which is a magnification variable element, on the image sensor position. For example, the first lens assembly and the second lens assembly may be driven by an electromagnetic force generated by the interaction between a coil and a magnet. The above description may be applied to the lens assemblies described below.

[0093] Meanwhile, according to an embodiment of the present invention, when an actuator for OIS and an actuator for AF or Zoom are arranged, it is possible to prevent magnetic field interference with the magnet for AF or Zoom when the OIS is driven. Since the second optical driving magnet of the first camera actuator 1100 is arranged separately from the second camera actuator 1200, it is possible to prevent magnetic field interference between the first camera actuator 1100 and the second camera actuator 1200. In this specification, OIS can be used interchangeably with terms such as image stabilization, optical image stabilization, optical image correction, and blur correction.

[0094] FIG. 4 is an exploded perspective view of the first camera actuator according to the embodiment.

[0095] Referring to FIG. 4, a first camera actuator 1100 according to the embodiment includes a first shielding can (not shown), a first housing 1120, a mover 1130, a rotating unit 1140, and a second optical driving unit 1150.

[0096] The mover 1130 may include a holder 1131 and an optical member 1132 mounted on the holder 1131. The rotating part 1140 includes a tilt guide part 1141, a first magnetic body 1142 having a binding force with the tilt guide part 1141, and a second magnetic body 1143 located within the tilt guide part 1141. The second optical driving part 1150 includes a second optical driving magnet 1151, a second optical driving coil 1152, a fourth Hall sensor part 1153, and a first substrate part 1154.

[0097] A first shielding can (not shown) is located at the outermost side of the first camera actuator 1100, and can be positioned so as to surround the rotating unit 1140 and the second optical driving unit 1150 described below.

[0098] Such a first shielding can (not shown) can block or reduce electromagnetic waves generated from the outside, thereby reducing the occurrence of malfunctions in the rotating unit 1140 or the second optical driving unit 1150.

[0099] The first housing 1120 may be located inside a first shielding can (not shown). Also, the first housing 1120 may be located inside a first substrate unit 1154 (described later). The first housing 1120 may be fitted or engaged with the first shielding can (not shown) to be fastened.

[0100] The first housing 1120 may be comprised of multiple housing sides. The multiple housing sides may include a first housing side 1121, a second housing side 1122, a third housing side 1123, and a fourth housing side 1124.

[0101] The first housing side 1121 and the second housing side 1122 can be disposed opposite each other, and the third housing side 1123 and the fourth housing side 1124 can be disposed between the first housing side 1121 and the second housing side 1122.

[0102] The third housing side 1123 may be in contact with the first housing side 1121, the second housing side 1122, and the fourth housing side 1124. The third housing side 1123 may also include a bottom surface as a lower side of the first housing 1120.

[0103] Additionally, the first housing side portion 1121 may include a first housing hole 1121a in which a third coil 1152a (described later) may be located.

[0104] Additionally, the second housing side portion 1122 may include a second housing hole 1122a in which a fourth coil 1152b, which will be described later, may be located.

[0105] The third coil 1152a and the fourth coil 1152b may be coupled to the first substrate unit 1154. According to an embodiment, the third coil 1152a and the fourth coil 1152b may be electrically connected to the first substrate unit 1154 so that a current may flow through them. This current is an element of an electromagnetic force that may cause the first camera actuator to tilt with respect to the X-axis.

[0106] Additionally, the third housing side portion 1123 may include a third housing hole 1123a. A fifth coil 1152c, which will be described later, may be located in the third housing hole 1123a. The fifth coil 1152c may be coupled to the first substrate portion 1154. Additionally, the fifth coil 1152c may be electrically connected to the first substrate portion 1154 so that a current may flow through the fifth coil 1152c. Such a current is an element of an electromagnetic force that allows the first camera actuator to tilt with respect to the Y-axis.

[0107] The fourth housing side portion 1124 may include a first housing groove 1124a. A first magnetic body 1142, which will be described later, may be disposed in an area facing the first housing groove 1124a. This allows the first housing 1120 to be coupled to the tilt guide portion 1141 by magnetic force or the like.

[0108] Furthermore, the first housing groove 1124a according to the embodiment may be located on an inner surface or an outer surface of the fourth housing side portion 1124. As a result, the first magnetic body 1142 may also be disposed to correspond to the position of the first housing groove 1124a.

[0109] Additionally, the first housing 1120 may include a receiving portion 1125 formed by the first to fourth housing sides 1121 to 1124. A mover 1130 may be positioned in the receiving portion 1125.

[0110] The mover 1130 includes a holder 1131 and an optical member 1132 that is mounted on the holder 1131 .

[0111] The holder 1131 may be seated in the receiving portion 1125 of the first housing 1120. The holder 1131 may include first to fourth prism outer surfaces corresponding to the first housing side 1121, the second housing side 1122, the third housing side 1123, and the fourth housing side 1124, respectively.

[0112] An outer surface of the fourth prism facing the fourth housing side portion 1124 may be provided with a seating groove in which the second magnetic body 1143 can be seated.

[0113] The optical member 1132 may be mounted on the holder 1131. To this end, the holder 1131 has a mounting surface, which may be formed by a receiving groove. The optical member 1132 may include a reflecting portion disposed therein. However, the present invention is not limited thereto. In addition, the optical member 1132 may reflect light reflected from the outside (e.g., an object) to the inside of the camera device. That is, the optical member 1132 may improve the spatial limitations of the first and second camera actuators by changing the path of the reflected light. It should also be understood that the camera device may thus provide a high range of magnification by minimizing the thickness and expanding the light path.

[0114] Rotating portion 1140 includes tilt guide portion 1141 , first magnetic body 1142 having a bonding force with tilt guide portion 1141 , and second magnetic body 1143 located within tilt guide portion 1141 .

[0115] The tilt guide portion 1141 may be coupled to the above-mentioned mover 1130 and the first housing 1120. The tilt guide portion 1141 may include an additional magnetic body (not shown) located therein.

[0116] In addition, the tilt guide portion 1141 can be disposed adjacent to the optical axis, which allows the actuator according to the embodiment to easily change the optical path in response to the first and second axis tilts described below.

[0117] The tilt guide portion 1141 may include a first protrusion disposed apart in a first direction (X-axis direction) and a second protrusion disposed apart in a second direction (Y-axis direction). The first protrusion and the second protrusion may protrude in opposite directions. This will be described in detail later.

[0118] Also, the first magnetic body 1142 may include a plurality of yokes, and the plurality of yokes may be positioned to face each other with respect to the tilt guide unit 1141. According to an embodiment, the first magnetic body 1142 may be made up of a plurality of yokes facing each other. Also, the tilt guide unit 1141 may be positioned between the plurality of yokes.

[0119] As described above, the first magnetic body 1142 may be located within the first housing 1120. Also, as described above, the first magnetic body 1142 may be seated on the inner surface or outer surface of the fourth housing side portion 1124. For example, the first magnetic body 1142 may be seated in a groove formed on the outer surface of the fourth housing side portion 1124. Alternatively, the first magnetic body 1142 may be seated in the first housing groove 1124a described above.

[0120] Also, the second magnetic body 1143 may be located on the outer surface of the mover 1130, particularly the holder 1131. With this configuration, the tilt guide part 1141 can be easily coupled to the first housing 1120 and the mover 1130 by a coupling force caused by a magnetic force between the internal second magnetic body 1143 and the first magnetic body 1142. In the present invention, the positions of the first magnetic body 1142 and the second magnetic body 1143 may be movable relative to each other.

[0121] The second optical driving unit 1150 includes a second optical driving magnet 1151 , a second optical driving coil 1152 , a fourth Hall sensor unit 1153 , and a first substrate unit 1154 .

[0122] The second optically driven magnet 1151 may include a plurality of magnets. According to an embodiment, the second optically driven magnet 1151 may include a third magnet 1151a, a fourth magnet 1151b, and a fifth magnet 1151c.

[0123] The third magnet 1151a, the fourth magnet 1151b, and the fifth magnet 1151c may be positioned on the outer surface of the holder 1131. The third magnet 1151a and the fourth magnet 1151b may be positioned to face each other. The fifth magnet 1151c may be positioned on the bottom surface of the outer surface of the holder 1131. This will be described in detail later.

[0124] The second optical drive coil 1152 can include multiple coils. In some embodiments, the second optical drive coil 1152 can include a third coil 1152a, a fourth coil 1152b, and a fifth coil 1152c.

[0125] The third coil 1152a may be positioned to face the third magnet 1151a, so that the third coil 1152a may be positioned in the first housing hole 1121a of the first housing side portion 1121 as described above.

[0126] Also, the fourth coil 1152b may be positioned to face the fourth magnet 1151b, so that the fourth coil 1152b may be positioned in the second housing hole 1122a of the second housing side portion 1122 as described above.

[0127] The third coil 1152a may be positioned to face the fourth coil 1152b. That is, the third coil 1152a may be positioned symmetrically with respect to the first direction (X-axis direction) with respect to the fourth coil 1152b. This also applies to the third magnet 1151a and the fourth magnet 1151b. That is, the third magnet 1151a and the fourth magnet 1151b may be positioned symmetrically with respect to the first direction (X-axis direction). Also, the third coil 1152a, the fourth coil 1152b, the third magnet 1151a, and the fourth magnet 1151b may be positioned to overlap at least partially in the second direction (Y-axis direction). With this configuration, the X-axis tilt can be accurately performed without tilting to one side due to the electromagnetic force between the third coil 1152a and the third magnet 1151a and the electromagnetic force between the fourth coil 1152b and the fourth magnet 1151b.

[0128] The fifth coil 1152c may be positioned to face the fifth magnet 1151c. Thus, as described above, the fifth coil 1152c may be positioned in the third housing hole 1123a of the third housing side portion 1123. The fifth coil 1152c generates electromagnetic force with the fifth magnet 1151c, thereby allowing the mover 1130 and the rotating portion 1140 to perform Y-axis tilt with respect to the first housing 1120.

[0129] Here, X-axis tilt means tilting with respect to the X-axis, and Y-axis tilt means tilting with respect to the Y-axis.

[0130] The fourth hall sensor unit 1153 may include a plurality of hall sensors. The hall sensors correspond to and are interchangeable with a "sensor unit" described below. According to an embodiment, the fourth hall sensor unit 1153 may include a third hall sensor 1153a, a fourth hall sensor 1153b, and a fifth hall sensor 1153c.

[0131] The third hall sensor 1153a may be located inside the third coil 1152a. The fourth hall sensor 1153b may be arranged symmetrically with the third hall sensor 1153a in the first direction (X-axis direction) and the third direction (Z-axis direction). The fourth hall sensor 1153b may be located inside the fourth coil 1152b.

[0132] The third hall sensor 1153a can detect a change in magnetic flux inside the third coil 1152a. Also, the fourth hall sensor 1153b can detect a change in magnetic flux in the fourth coil 1152b. This allows position sensing between the third and fourth magnets 1151a, 1151b and the third and fourth hall sensors 1153a, 1153b. The first camera actuator according to the embodiment can detect the position through, for example, the third and fourth hall sensors 1153a, 1153b and control the X-axis tilt more accurately.

[0133] Also, the fifth hall sensor 1153c may be located inside the fifth coil 1152c. The fifth hall sensor 1153c may detect a change in magnetic flux inside the fifth coil 1152c. This allows position sensing between the fifth magnet 1151c and the fifth hall sensor 1153bc. The first camera actuator according to the embodiment may thereby control the Y-axis tilt. There may be at least one of the first to fifth hall sensors.

[0134] The first substrate unit 1154 may be located under the second optical drive unit 1150. The first substrate unit 1154 may be electrically connected to the second optical drive coil 1152 and the fourth Hall sensor unit 1153. For example, the first substrate unit 1154 may be coupled to the second optical drive coil 1152 and the fourth Hall sensor unit 1153 by SMT. However, the present invention is not limited to such a method.

[0135] The first substrate unit 1154 is located between a first shielding can (not shown) and the first housing 1120, and may be coupled to the first shielding can and the first housing 1120. The coupling method may be various as described above. In addition, through the coupling, the second optical driving coil 1152 and the fourth hall sensor unit 1153 may be located within the outer surface of the first housing 1120.

[0136] The first substrate unit 1154 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 first substrate unit 1154 is not limited to these types.

[0137] FIG. 5 is an oblique view of the first camera actuator of the embodiment with the first shielding can and substrate removed, FIG. 6a is a cross-sectional view taken along BB' in FIG. 5, and FIG. 6b is a cross-sectional view taken along CC' in FIG. 5.

[0138] Figure 5 is an oblique view of the first camera actuator of the embodiment with the shielding can and substrate removed, Figure 6a is a cross-sectional view taken along BB' in Figure 5, and Figure 6b is a cross-sectional view taken along CC' in Figure 5.

[0139] With reference to FIGS. 5-6b, the third coil 1152a may be located on the first housing side 1121.

[0140] The third coil 1152a and the third magnet 1151a may be positioned to face each other. The third magnet 1151a may at least partially overlap the third coil 1152a in the second direction (the Y-axis direction).

[0141] Also, the fourth coil 1152b may be located on the second housing side portion 1122. As a result, the fourth coil 1152b and the fourth magnet 1151b may be located opposite to each other. The fourth magnet 1151b may at least partially overlap with the fourth coil 1152b in the second direction (Y-axis direction).

[0142] Also, the third coil 1152a and the fourth coil 1152b may overlap in the second direction (Y-axis direction), and the third magnet 1151a and the fourth magnet 1151b may overlap in the second direction (Y-axis direction). With this configuration, the electromagnetic force applied to the outer surfaces of the holders (the outer surfaces of the first holder and the second holder) is positioned on an axis parallel to the second direction (Y-axis direction), and X-axis tilting may be performed accurately and precisely.

[0143] In addition, a first receiving groove (not shown) may be located on the outer side surface of the fourth holder. In addition, first protrusions PR1a and PR1b may be disposed in the first receiving groove. Thus, when performing X-axis tilt, the first protrusions PR1a and PR1b may be a reference axis (or a rotation axis) of the tilt. Thus, the tilt guide unit 1141 and the mover 1130 may move left and right.

[0144] As described above, the second protrusion PR2 may be seated in a groove on the inner surface of the fourth housing side portion 1124. When tilting in the Y-axis direction, the tilt guide unit and the mover may rotate with the second protrusion PR2 as a reference axis for tilting in the Y-axis direction.

[0145] According to the embodiment, OIS can be performed by such a first protrusion and a second protrusion.

[0146] Referring to Fig. 6a, Y-axis tilt can be performed, i.e., OIS can be realized by rotating in a first direction (X-axis direction).

[0147] According to an embodiment, a fifth magnet 1151c disposed under the holder 1131 may generate electromagnetic force with a fifth coil 1152c to tilt or rotate the mover 1130 in a first direction (X-axis direction).

[0148] Specifically, the tilt guide portion 1141 may be coupled to the first housing 1120 and the mover 1130 by a first magnetic body 1142 in the first housing 1120 and a second magnetic body 1143 in the mover 1130. In addition, the first protrusion portion PR1 may be supported by the first housing 1120 while being spaced apart in the first direction (X-axis direction).

[0149] In addition, the tilt guide portion 1141 can rotate or tilt about the second protrusion portion PR2 that protrudes toward the mover 1130 as a reference axis (or rotation axis). That is, the tilt guide portion 1141 can perform Y-axis tilt about the second protrusion portion PR2 as a reference axis.

[0150] For example, the mover 1130 can be rotated in the X-axis direction at a first angle θ1 (X1->X1a or X1b) by the first electromagnetic forces F1A and F1B between the fifth magnet 1151c arranged in the third seating groove and the fifth coil 1152c arranged on the side of the third substrate, thereby realizing OIS. The first angle θ1 can be, but is not limited to, ±1° to ±3°.

[0151] In the first camera actuator according to some embodiments below, the electromagnetic force can generate a force in a described direction to move the mover, or can generate a force in another direction to move the mover in the described direction. That is, the described direction of the electromagnetic force means the direction of the force generated by the magnet and the coil to move the mover.

[0152] Referring to Fig. 6b, X-axis tilt can be performed, i.e., OIS can be achieved by rotating in a second direction (Y-axis direction).

[0153] OIS can be achieved by tilting or rotating the mover 1130 in the Y-axis direction (or tilting the mover 1130 in the X-axis direction).

[0154] According to an embodiment, the third magnet 1151a and the fourth magnet 1151b arranged in the holder 1131 can form electromagnetic forces with the third coil 1152a and the fourth coil 1152b, respectively, to tilt or rotate the tilt guide part 1141 and the mover 1130 in the second direction (Y-axis direction).

[0155] The tilt guide portion 1141 can rotate or tilt in the second direction (X-axis tilt) with the first protrusion portion PR1 as a reference axis (or rotation axis).

[0156] For example, the mover 1130 can be rotated at a second angle θ2 (Y1->Y1a or Y1b) in the Y-axis direction by the second electromagnetic forces F2A and F2B between the third and fourth magnets 1151a and 1151b arranged in the first seating groove and the third and fourth coils 1152a and 1152b arranged on the sides of the first and second substrates, thereby realizing OIS. The second angle θ2 can be, but is not limited to, ±1° to ±3°.

[0157] Also, as described above, the electromagnetic force generated by the third and fourth magnets 1151a, 1151b and the third and fourth coils 1152a, 1152b may act in the third direction or the direction opposite to the third direction. For example, the electromagnetic force may be generated in the third direction (Z-axis direction) at the left side of the mover 1130 and act in the direction opposite to the third direction (Z-axis direction) at the right side of the mover 1130. This allows the mover 1130 to rotate based on the first direction, or to move along the second direction.

[0158] In this way, the first camera actuator according to the embodiment can provide the best optical characteristics by controlling the rotation of the tilt guide unit 1141 and the mover 1130 in the first direction (X-axis direction) or the second direction (Y-axis direction) by the electromagnetic force between the second optical drive magnet in the holder and the second optical drive coil arranged in the housing, thereby minimizing the occurrence of decentering or tilting when realizing OIS. Also, as described above, "Y-axis tilt" corresponds to rotating or tilting in the first direction (X-axis direction), and "X-axis tilt" corresponds to rotating or tilting in the second direction (Y-axis direction).

[0159] Figure 7a is an exploded oblique view of a first camera actuator according to another embodiment, Figure 7b is a cross-sectional view of the first camera actuator according to another embodiment, and Figure 7c is another cross-sectional view of the first camera actuator according to another embodiment.

[0160] 7a to 7c, a first camera actuator 1100 according to another embodiment includes a first housing 1120, a mover 1130, a rotating unit 1140, a second optical drive unit 1150, a first member 1126, and a second member 1131a.

[0161] The mover 1130 may include a holder 1131 and an optical member 1132 seated on the holder 1131. The mover 1130 may be disposed in the housing 1120. The rotating part 1140 may include a tilt guide part 1141, a second magnetic body 1142 having different polarities to press the tilt guide part 1141, and a first magnetic body 1143. The first magnetic body 1143 and the second magnetic body 1142 may have different sizes. Depending on the embodiment, the first magnetic body 1143 may be larger than the second magnetic body 1142. For example, the first magnetic body 1143 and the second magnetic body 1142 may have the same length in the optical axis direction or the third direction (Z-axis direction) and may have different areas in the first direction and the second direction. In this case, the area of ​​the first magnetic body 1143 may be larger than the area of ​​the second magnetic body 1142. In addition, the second optical driving unit 1150 includes a second optical driving magnet 1151 , a second optical driving coil 1152 , a Hall sensor unit 1153 , a first substrate unit 1154 , and a yoke unit 1155 .

[0162] First, the first camera actuator 1100 may include a shielding can (not shown). The shielding can (not shown) may be located at the outermost side of the first camera actuator 1100 and may be located to surround the rotating unit 1140 and the second optical driving unit 1150 described below.

[0163] Such a shielding can (not shown) can block or reduce electromagnetic waves generated from the outside, i.e., the shielding can (not shown) can reduce the occurrence of malfunction in the rotating unit 1140 or the second optical driving unit 1150.

[0164] The first housing 1120 may be located inside a shielding can (not shown). In the absence of a shielding can, the first housing 1120 may be located at the outermost side of the first camera actuator.

[0165] Also, the first housing 1120 may be located inside a first substrate unit 1154, which will be described later. The first housing 1120 may be fitted or engaged with a shielding can (not shown) to be fastened.

[0166] The first housing 1120 may include a first housing side 1121, a second housing side 1122, a third housing side 1123, and a fourth housing side 1124, which will be described in more detail below.

[0167] The first member 1126 may be disposed in the first housing 1120. The first member 1126 may be disposed between the second member 1131a and the housing. The first member 1126 may be disposed within the housing or on one side of the housing, as will be described below.

[0168] The mover 1130 includes a holder 1131 and an optical member 1132 mounted on the holder 1131 .

[0169] The holder 1131 may be seated in the receiving portion 1125 of the first housing 1120. The holder 1131 may include a first holder outer surface to a fourth holder outer surface that respectively correspond to the first housing side 1121, the second housing side 1122, the third housing side 1123, and the first member 1126. For example, the first holder outer surface to the fourth holder outer surface may correspond to or face each of the inner surfaces of the first housing side 1121, the second housing side 1122, the third housing side 1123, and the first member 1126.

[0170] In addition, the holder 1131 may include a second member 1131a disposed in the fourth seating groove, which will be described in detail later.

[0171] The optical member 1132 may be mounted on the holder 1131. To this end, the holder 1131 has a mounting surface, which may be formed by a receiving groove. Depending on the embodiment, the optical member 1132 may be made of a mirror or a prism. Although a prism will be illustrated below as a reference, the optical member 1132 may be made of a plurality of lenses as in the above-described embodiment. Alternatively, the optical member 1132 may be made of a plurality of lenses and a prism or a mirror. The optical member 1132 may also include a reflecting portion disposed therein. However, the present invention is not limited thereto.

[0172] In addition, the optical member 1132 may reflect light reflected from the outside (e.g., an object) back into the camera module. That is, the optical member 1132 may improve the spatial limitations of the first and second camera actuators by changing the path of the reflected light. It should also be understood that this allows the camera module to provide a high range of magnification by minimizing the thickness and expanding the light path.

[0173] Further, the second member 1131a may be coupled to the holder 1131. The second member 1131a may be disposed on the outside of the holder 1131 and on the inside of the housing. Also, the second member 1131a may be seated in an additional groove located on the fourth holder outer surface in an area other than the fourth seating groove in the holder 1131. As a result, the second member 1131a is coupled to the holder 1131, and at least a portion of the first member 1126 may be located between the second member 1131a and the holder 1131. For example, at least a portion of the first member 1126 may pass through a space formed between the second member 1131a and the holder 1131.

[0174] Also, the second member 1131a may have a structure separated from the holder 1131. With such a structure, the first camera actuator can be easily assembled as described below. Alternatively, the second member 1131a may be formed integrally with the holder 1131, but will be described below as a separated structure.

[0175] Rotating portion 1140 includes tilt guide portion 1141 , second magnetic body 1142 and first magnetic body 1143 having mutually different polarities so as to apply pressure to tilt guide portion 1141 .

[0176] The tilt guide portion 1141 may be coupled to the mover 1130 and the first housing 1120 described above. Specifically, the tilt guide portion 1141 may be disposed between the holder 1131 and the first member 1126. Thus, the tilt guide portion 1141 may be coupled to the mover 1130 and the first housing 1120 of the holder 1131. However, unlike the above, in this embodiment, the tilt guide portion 1141 may be disposed between the first member 1126 and the holder 1131. Specifically, the tilt guide portion 1141 may be located between the first member 1126 and the fourth seating groove of the holder 1131.

[0177] Also, the second magnetic body 1142 and the first magnetic body 1143 may be seated in the first groove gr1 formed in the second member 1131a and the second groove gr2 formed in the first member 1126, respectively. In this embodiment, the first groove gr1 and the second groove gr2 may be positioned differently from the first and second grooves described in the other embodiments described above. However, the first groove gr1 is located in the second member 1131a and moves together with the holder, and the second groove gr2 is located on the first member 1126 corresponding to the first groove gr1 and is coupled with the first housing 1120. Therefore, these terms will be used interchangeably in the description.

[0178] In addition, the tilt guide portion 1141 may be disposed adjacent to the optical axis, so that the actuator according to the other embodiment can easily change the optical path in response to the first and second axis tilts described below.

[0179] The tilt guide portion 1141 may include a first protrusion disposed apart in a first direction (X-axis direction) and a second protrusion disposed apart in a second direction (Y-axis direction). The first protrusion and the second protrusion may protrude in opposite directions. This will be described in detail later. The first protrusion may protrude toward the mover. The first protrusion may extend from the base in the optical axis direction or the third direction (Z-axis direction). The second protrusion may protrude in the opposite direction to the first protrusion. That is, the second protrusion may extend in the opposite direction to the optical axis direction or the third direction (Z-axis direction). The second protrusion may extend toward the first member 1126 or the housing 1120.

[0180] As described above, the second magnetic body 1142 may be located within the second member 1131a, and the first magnetic body 1143 may be located within the first member 1126.

[0181] The second magnetic body 1142 and the first magnetic body 1143 may have the same polarity. For example, the second magnetic body 1142 may be a magnet having a north pole, and the first magnetic body 1143 may also be a magnet having a north pole. Alternatively, conversely, the second magnetic body 1142 may be a magnet having a south pole, and the first magnetic body 1143 may also be a magnet having a south pole.

[0182] For example, a first pole surface of the first magnetic body 1143 and a second pole surface of the second magnetic body 1142 facing the first pole surface may have the same polarity.

[0183] The second magnetic body 1142 and the first magnetic body 1143 can generate a repulsive force between each other due to the above-mentioned polarity. With this configuration, the above-mentioned repulsive force can be applied to the second member 1131a coupled to the second magnetic body 1142, or the first member 1126 coupled to the holder 1131 and the first magnetic body 1143, or the first housing 1120. At this time, the repulsive force applied to the second member 1131a can be transmitted to the holder 1131 coupled to the second member 1131a. As a result, the tilt guide part 1141 disposed between the second member 1131a and the first member 1126 can be pressurized by the repulsive force. That is, the repulsive force can maintain the tilt guide part 1141 positioned between the holder 1131 and the first housing 1120 (or the first member 1126). With this configuration, the position between the mover 1130 and the first housing 1120 can be maintained even during X-axis or Y-axis tilt. Furthermore, the tilt guide portion can be in close contact with the first member 1126 and the holder 1131 due to the repulsive force between the first magnetic body 1143 and the second magnetic body 1142. The tilt guide portion 1141 can guide the tilt of the mover 1130.

[0184] The second optical actuator 1150 includes a second optical actuator magnet 1151, a second optical actuator coil 1152, a Hall sensor unit 1153, a first substrate unit 1154, and a yoke unit 1155. The contents described above can be applied to this, except for the contents described in this embodiment.

[0185] The third coil 1152a may be located on the first housing side portion 1121, and the third magnet 1151a may be located on the first holder outer surface 1131S1 of the holder 1131. As a result, the third coil 1152a and the third magnet 1151a may be located facing each other. The third magnet 1151a may at least partially overlap the third coil 1152a in the second direction (Y-axis direction).

[0186] Also, the fourth coil 1152b may be located on the second housing side portion 1122, and the fourth magnet 1151b may be located on the second holder outer surface 1131S2 of the holder 1131. As a result, the fourth coil 1152b and the fourth magnet 1151b may be located facing each other. The fourth magnet 1151b may at least partially overlap the fourth coil 1152b in the second direction (Y-axis direction).

[0187] Furthermore, the third coil 1152a and the fourth coil 1152b may overlap in the second direction (Y-axis direction), and the third magnet 1151a and the fourth magnet 1151b may overlap in the second direction (Y-axis direction).

[0188] With this configuration, the electromagnetic force applied to the outer surfaces of the holders (the first holder outer surface and the second holder outer surface) is located on an axis parallel to the second direction (the Y-axis direction), so that X-axis tilt can be performed accurately and precisely.

[0189] Also, the second protrusions PR2a and PR2b of the tilt guide part 1141 may contact the first member 1126 of the first housing 1120. The second protrusion PR2 may be seated in a second protrusion groove PH2 formed on one side of the first member 1126. Also, when performing X-axis tilt, the second protrusions PR2a and PR2b may be a reference axis (or a rotation axis) of the tilt. As a result, the tilt guide part 1141 and the mover 1130 may move along the second direction.

[0190] Also, as described above, the third Hall sensor 1153a may be located on the outside in order to be electrically connected and coupled to the first substrate portion 1154. However, the location is not limited to this.

[0191] Moreover, the second coil 1152c may be located on the third housing side portion 1123, and the fifth magnet 1151c may be located on the third holder outer surface 1131S3 of the holder 1131. The second coil 1152c and the fifth magnet 1151c may at least partially overlap in the first direction (X-axis direction). This makes it possible to easily control the strength of the electromagnetic force between the second coil 1152c and the fifth magnet 1151c.

[0192] As described above, the tilt guide portion 1141 may be located on the fourth holder outer surface 1131S4 of the holder 1131. Also, the tilt guide portion 1141 may be seated in the fourth seating groove 1131S4a of the fourth holder outer surface. As described above, the fourth seating groove 1131S4a may include a first region, a second region, and a third region.

[0193] The second member 1131a may be located in the first region. That is, the first region may overlap with the second member 1131a in the first direction (X-axis direction). In particular, the first region may be a region where a member base portion of the second member 1131a is located. In this case, the first region may be located on the fourth holder outer side surface 1131S4. That is, the first region may correspond to a region located at the top of the fourth seating groove 1131S4a. In this case, the first region does not have to be a region within the fourth seating groove 1131S4a.

[0194] The first member 1126 may be located in the second region. That is, the second region may overlap with the first member 1126 in the first direction (X-axis direction).

[0195] Also, the second region may be located on the fourth holder outer surface 1131S4 like the first region, that is, the second region may correspond to a region located above the fourth seating groove 1131S4a.

[0196] The tilt guide part may be located in the third region. In particular, the base of the tilt guide part may be located in the third region. That is, the third region may overlap with the tilt guide part (e.g., the base) in the first direction (X-axis direction).

[0197] The second member 1131a is disposed in the first region, and the second member 1131a may include a first groove gr1 formed on an inner surface. In addition, as described above, the second magnetic body 1142 is disposed in the first groove gr1, and the repulsive force RF2 generated in the second magnetic body 1142 may be transmitted to the fourth seating groove 1131S4a of the holder 1131 through the second member 1131a (RF2'). Therefore, the holder 1131 may apply a force to the tilt guide part 1141 in the same direction as the repulsive force RF2 generated in the second magnetic body 1142.

[0198] The first member 1126 may be disposed in the second region. The first member 1126 may include a second groove gr2 facing the first groove gr1. The first member 1126 may also include a second protruding groove PH2 disposed on a surface corresponding to the second groove gr2. The repulsive force RF1 generated by the first magnetic body 1143 may be applied to the first member 1126. As a result, the first member 1126 and the second member 1131a may pressurize the tilt guide portion 1141 disposed between the first member 1126 and the holder 1131 by the generated repulsive forces RF1, RF2'. As a result, the coupling between the holder 1131, the first housing 1120, and the tilt guide portion 1141 may be maintained even after the holder is tilted in the X-axis or Y-axis by the current applied to the first and second coils, or the second coil 1152c.

[0199] The tilt guide portion 1141 may be disposed in the third region. As described above, the tilt guide portion 1141 may include the first protrusion portion PR1 and the second protrusion portion PR2. In this case, the first protrusion portion PR1 and the second protrusion portion PR2 may be disposed on the second surface 1141b and the first surface 1141a of the base, respectively. In this manner, also in other embodiments described below, the first protrusion portion PR1 and the second protrusion portion PR2 may be variously positioned on the opposing surfaces of the base.

[0200] The first protrusion groove PH1 may be located in the fourth seating groove 1131S4a. The first protrusion groove PH1 may accommodate the first protrusion PR1 of the tilt guide portion 1141. This allows the first protrusion PR1 to contact the first protrusion groove PH1. The first protrusion groove PH1 may have a maximum diameter corresponding to the maximum diameter of the first protrusion PR1. This can be similarly applied to the second protrusion groove PH2 and the second protrusion PR2. That is, the second protrusion groove PH2 may have a maximum diameter corresponding to the maximum diameter of the second protrusion PR2. This allows the second protrusion PR2 to contact the second protrusion groove PH2. With this configuration, a first axis tilt based on the first protrusion PR1 and a second axis tilt based on the second protrusion PR2 are easily generated, and the tilt radius can be improved.

[0201] Also, the tilt guide portion 1141 may be arranged in line with the second member 1131a and the first member 1126 in the third direction (Z-axis direction), and the tilt guide portion 1141 may overlap with the optical member 1132 in the first direction (X-axis direction). More specifically, in the embodiment, the first protrusion portion PR1 may overlap with the optical member 1132 in the first direction (X-axis direction). Furthermore, at least a portion of the first protrusion portion PR1 may overlap with the second coil 1152c or the fifth magnet 1151c in the first direction (X-axis direction). That is, in the camera actuator according to the embodiment, each protrusion portion, which is the central axis of the tilt, may be positioned adjacent to the center of gravity of the mover 1130. As a result, the tilt guide portion may be positioned adjacent to the center of gravity of the holder. As a result, the camera actuator according to the embodiment may minimize the moment value that tilts the holder, and may also minimize the consumption of the current applied to the coil portion, etc., to tilt the holder, thereby improving the power consumption and the reliability of the element.

[0202] Furthermore, the second magnetic body 1142 and the first magnetic body 1143 may not overlap with the second coil 1152c or the optical member 1132 in the first direction (X-axis direction). That is, in the embodiment, the second magnetic body 1142 and the first magnetic body 1143 may be arranged apart from the second coil 1152c or the optical member 1132 in the third direction (Z-axis direction). This allows the second coil 1152c to minimize the magnetic force transmitted from the second magnetic body 1142 and the first magnetic body 1143. This allows the camera actuator according to the embodiment to easily perform up-down drive (Y-axis tilt) and minimize power consumption.

[0203] Furthermore, as described above, the fourth Hall sensor 1153b located inside the second coil 1152c detects a change in magnetic flux, thereby performing position sensing between the fifth magnet 1151c and the fourth Hall sensor 1153b. At this time, the offset voltage of the fourth Hall sensor 1153b may be changed due to the influence of the magnetic field formed by the second magnetic body 1142 and the first magnetic body 1143.

[0204] The first camera actuator according to the embodiment may be arranged in the third direction in the following order: second member 1131a, second magnetic body 1142, first magnetic body 1143, first member 1126, tilt guide section 1141, and holder 1131. However, since the second magnetic body is located within the second member and the first magnetic body is located within the first member, the second member, the first member, the tilt guide section, and the holder may be arranged in this order.

[0205] Also, in the embodiment, the second magnetic body 1142 and the first magnetic body 1143 may be spaced apart from the holder 1131 (or the optical member 1132) in the third direction by a distance greater than the distance between the tilt guides 1141. Thus, the fourth Hall sensor 1153b at the bottom of the holder 1131 may also be spaced apart from the second magnetic body 1142 and the first magnetic body 1143 by a predetermined distance. Thus, the fourth Hall sensor 1153b can minimize the influence of the magnetic field formed by the second magnetic body 1142 and the first magnetic body 1143, and prevent the Hall voltage from concentrating positively or negatively and becoming saturated. That is, with this configuration, the Hall electrode can have a range in which Hall calibration can be performed. Furthermore, the temperature also affects the electrodes of the Hall sensor, and the resolution of the camera lens varies depending on the temperature. In the embodiment, the Hall voltage is prevented from concentrating positively or negatively, and compensation for the resolution of the lens is performed accordingly, so that a decrease in resolution can be easily prevented.

[0206] In addition, a circuit can be easily designed to compensate for an offset in the output (ie, the Hall voltage) of the fourth Hall sensor 1153b.

[0207] Furthermore, according to the embodiment, a portion of the tilt guide portion 1141 may be located outside the fourth holder outer surface in comparison with the fourth holder outer surface of the holder 1131 .

[0208] The tilt guide portion 1141, except for the first protrusion PR1 and the second protrusion PR2, may be seated in the fourth seating groove 1131S4a with the base as a reference. In other words, the length of the base in the third direction (Z-axis direction) may be smaller than the length of the fourth seating groove 1131S4a in the third direction (Z-axis direction). With this configuration, miniaturization can be easily achieved.

[0209] Also, the tilt guide portion 1141 may have a maximum length in the third direction (Z-axis direction) greater than the length of the fourth seating groove 1131S4a in the third direction (Z-axis direction). Thereby, as described above, the end of the second protrusion portion PR2 may be located between the outer side surface of the fourth holder and the first member 1126. That is, at least a portion of the second protrusion portion PR2 may be located in the opposite direction to the third direction (Z-axis direction) from the holder 1131. That is, the holder 1131 may be spaced a predetermined distance in the third direction (Z-axis direction) from the end of the second protrusion portion PR2 (a portion contacting the second protrusion groove).

[0210] With this configuration, the second member 1131a is positioned inside or surrounding the first member 1126, improving space efficiency and realizing miniaturization. Furthermore, even when driven by electromagnetic force (tilting or rotating the mover 1130), the second member 1131a does not protrude outside the first member 1126, so contact with surrounding elements can be blocked. This improves reliability.

[0211] Furthermore, a predetermined space may exist between the second magnetic body 1142 and the first magnetic body 1143. That is, the second magnetic body 1142 and the first magnetic body 1143 may face each other with the same polarity.

[0212] FIG. 8 is a perspective view of the second camera actuator according to the embodiment, FIG. 9 is an exploded perspective view of the second camera actuator according to the embodiment, FIG. 10a is a cross-sectional view cut along DD' in FIG. 8, FIG. 10b is a perspective view showing the first optical driving unit, the moving assembly, and the first and second guide units in the second camera actuator according to the embodiment, FIG. 10c is a diagram showing a first state of the first optical driving unit, the moving assembly, and the first and second guide units in the second camera actuator, FIG. 10d is a diagram showing a second state of the first optical driving unit, the moving assembly, and the first and second guide units in the second camera actuator, FIG. 10e is a diagram showing a third state of the first optical driving unit, the moving assembly, and the first and second guide units in the second camera actuator, FIG. 10f is a diagram showing the maximum movement state of the first lens assembly and the second lens assembly in the second camera actuator, and FIGS. 10g and 10h are diagrams showing an example of the movement of the coil and magnet in the first driving unit.

[0213] 8 to 10a, a second camera actuator 1200 (or a camera device or a zoom lens transport device or a zoom lens moving device or a lens transport device) according to the embodiment may include a lens unit 1220, a second housing 1230, a first optical drive unit 1250, a base unit 1260, a second substrate unit 1270, and a joint member 1280. Furthermore, the second camera actuator 1200 may further include a second shielding can (not shown), an elastic unit (not shown), and a joint member (not shown).

[0214] Also, as described later, the lens group may move along the optical axis direction. Also, the lens group may be coupled with the lens assembly and move together along the optical axis direction. In this case, the second camera actuator may include a moving part that moves along the optical axis direction together with the lens group, and a fixed part that is different from the moving part and is relatively fixed without moving along the optical axis direction. In this embodiment, the moving part may include a lens assembly (e.g., first and second lens assemblies) and a first optical driving magnet (first and second driving magnets). Also, the fixed part may include a second housing, a second substrate part, a first optical driving coil, and a Hall sensor. Furthermore, a driving magnet may be disposed on either the moving part or the fixed part, and a driving coil may be disposed on the other. Corresponding to this description, the moving distance of the lens assembly described later may correspond to the moving distance of the moving part.

[0215] The second shielding can (not shown) is located in one area (e.g., the outermost) of the second camera actuator 1200 and can be positioned to surround the components described below (lens portion 1220, second housing 1230, first optical drive portion 1250, base portion 1260, second substrate portion 1270, and image sensor IS).

[0216] Such a second shielding can (not shown) can block or reduce electromagnetic waves generated from the outside, thereby reducing the occurrence of malfunctions in the first optical actuator 1250.

[0217] The lens unit 1220 may be located in a second shielding can (not shown). The lens unit 1220 may move along a third direction (the Z-axis direction or the optical axis direction). This allows the above-mentioned AF function or zoom function to be performed.

[0218] Furthermore, the lens unit 1220 can be located inside the second housing 1230. This allows at least a portion of the lens unit 1220 to move inside the second housing 1230 along the optical axis direction or the third direction (Z-axis direction).

[0219] Specifically, the lens unit 1220 may include a lens group 1221 and a moving assembly 1222 .

[0220] First, the lens group 1221 may include at least one lens. Also, the lens group 1221 may include a plurality of lenses, but the following description will be given based on one lens.

[0221] The lens group 1221 is coupled to a moving assembly 1222 and can be moved in a third direction (Z-axis direction) by an electromagnetic force generated by a first magnet 1252a and a second magnet 1252b coupled to the moving assembly 1222.

[0222] Depending on the embodiment, the lens group 1221 may include a first lens group 1221a, a second lens group 1221b, and a third lens group 1221c. The first lens group 1221a, the second lens group 1221b, and the third lens group 1221c may be arranged in order along the optical axis direction. Furthermore, the lens group 1221 may further include a fourth lens group 1221d. The fourth lens group 1221d may be arranged at the rear end of the third lens group 1221c.

[0223] The first lens group 1221a may be coupled to and fixed in the 2-1 housing, that is, the first lens group 1221a does not need to move along the optical axis direction.

[0224] The second lens group 1221b can be moved in the third direction or the light side direction in combination with the first lens assembly 1222a. The magnification can be adjusted by moving the first lens assembly 1222a and the second lens group 1221b.

[0225] The third lens group 1221c is coupled with the second lens assembly 1222b and can move in a third direction or in the optical axis direction. The movement of the third lens group 1221c can perform focus adjustment or autofocus.

[0226] However, the number of lens groups is not limited to this, and the above-mentioned fourth lens group 1221d may not be present, or an additional lens group other than the fourth lens group 1121d may be further disposed.

[0227] The moving assembly 1222 may include an open area surrounding the lens group 1221. Such a moving assembly 1222 may be mixed with a lens assembly. The moving assembly 1222 or the lens assembly may move along the optical axis direction (Z-axis direction) within the second housing 1230. The moving assembly 1222 may be coupled to the lens group 1221 in various ways. The moving assembly 1222 may include a groove on a side surface, and may be coupled to the first magnet 1252a and the second magnet 1252b through the groove. A coupling material or the like may be applied to the groove.

[0228] In addition, the moving assembly 1222 may be coupled to an elastic portion (not shown) at its upper end and rear end. As a result, the moving assembly 1222 may move in a third direction (Z-axis direction) and be supported by the elastic portion (not shown). That is, the position of the moving assembly 1222 may be maintained in the third direction (Z-axis direction). The elastic portion (not shown) may be made of various elastic elements such as a leaf spring.

[0229] The translation assembly 1222 is located within a second housing 1230 and may include a first lens assembly 1222a and a second lens assembly 1222b.

[0230] The area where the third lens group 1221c of the second lens assembly 1222b is seated may be located at the rear end of the first lens assembly 1222a. That is, the area where the third lens group 1221c of the second lens assembly 1222b is seated may be located between the area where the second lens group 1221b of the first lens assembly 1222a is seated and the image sensor.

[0231] The first lens assembly 1222a and the second lens assembly 1222b may face the first guide portion G1 and the second guide portion G2, respectively. The first guide portion G1 and the second guide portion G2 may be located on a first side portion and a second side portion of the second housing 1230, which will be described later.

[0232] In addition, a first optical driving magnet may be mounted on the outer surfaces of the first lens assembly 1222a and the second lens assembly 1222b. For example, a second magnet 1252b may be mounted on the outer surface of the second lens assembly 1222b. A first magnet 1252a may be mounted on the outer surface of the first lens assembly 1222a. In this specification, the first lens assembly 1222a may be used interchangeably as a "first bobbin". The second lens assembly 1222b may be used interchangeably as a "second bobbin".

[0233] The second housing 1230 may be disposed between the lens portion 1220 and a second shielding can (not shown). The second housing 1230 may be disposed so as to surround the lens portion 1220.

[0234] The second housing 1230 may include a 2-1 housing 1231 and a 2-2 housing 1232. The 2-1 housing 1231 may be coupled to the first lens group 1221a and may also be coupled to the first camera actuator described above. The 2-1 housing 1231 may be located in front of the 2-2 housing 1232.

[0235] In addition, the 2-2 housing 1232 may be located at the rear end of the 2-1 housing 1231. The lens unit 1220 may be seated inside the 2-2 housing 1232.

[0236] The second housing 1230 (or the 2-2 housing 1232) may have a hole formed on a side thereof. The first coil 1251a and the second coil 1251b may be disposed in the hole. The hole may be positioned to correspond to the groove of the moving assembly 1222 described above. In this case, the first coil 1251a and the second coil 1251b may be multiple.

[0237] According to an embodiment, the second housing 1230 (particularly, the 2-2 housing 1232) may include a first side portion 1232a and a second side portion 1232b. The first side portion 1232a and the second side portion 1232b may be located corresponding to each other. For example, the first side portion 1232a and the second side portion 1232b may be arranged symmetrically with respect to the third direction. The first optical driving coil 1251 may be located on the first side portion 1232a and the second side portion 1232b. In addition, the second substrate portion 1270 may be seated on the outer surfaces of the first side portion 1232a and the second side portion 1232b. That is, the first substrate may be located on the outer surface of the first side portion 1232a, and the second substrate may be located on the outer surface of the second side portion 1232b.

[0238] Furthermore, the first guide portion G1 and the second guide portion G2 may be located on a first side portion 1232a and a second side portion 1232b of the second housing 1230 (particularly, the 2-2 housing 1232).

[0239] The first guide portion G1 and the second guide portion G2 may be positioned to correspond to each other. For example, the first guide portion G1 and the second guide portion G2 may be positioned to face each other with respect to the third direction (Z-axis direction). Furthermore, the first guide portion G1 and the second guide portion G2 may at least partially overlap each other in the second direction (Y-axis direction).

[0240] The first guide part G1 and the second guide part G2 may include at least one groove (e.g., a guide groove) or recess. The first ball B1 or the second ball B2 may be seated in the groove or recess. As a result, the first ball B1 or the second ball B2 may move in the third direction (Z-axis direction) within the guide groove of the first guide part G1 or the guide groove of the second guide part G2.

[0241] Alternatively, the first ball B1 or the second ball B2 may move in a third direction along a rail formed on the inside of the first side 1232a of the second housing 1230 or a rail formed on the inside of the second side 1232b of the second housing 1230.

[0242] This allows the first lens assembly 1222a and the second lens assembly 1222b to move in a third direction or along the optical axis, where the second lens assembly 1222b may be positioned adjacent or closer to the image sensor than the first lens assembly 1222a.

[0243] According to the embodiment, the first ball B1 may contact the first lens assembly 1222a. The second ball B2 may contact the second lens assembly 1222b. Therefore, depending on the position, the first ball B1 may at least partially overlap with the second ball B2 along the first direction (X-axis direction). However, depending on the positions of the first lens assembly 1222a and the second lens assembly 1222b, they may not overlap with each other.

[0244] The first guide portion G1 and the second guide portion G2 may include first guide grooves GG1a and GG2a facing the first recess RS1. The first guide portion G1 and the second guide portion G2 may include second guide grooves GG1b and GG2b facing the second recess RS2. The first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves extending in the third direction (Z-axis direction). The first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves having different shapes. For example, the first guide grooves GG1a and GG2a may be grooves with inclined sides, and the second guide grooves GG1b and GG2b may be grooves with sides perpendicular to the bottom surface.

[0245] Furthermore, there may be a plurality of first guide grooves GG1a, GG2a or second guide grooves GG1b, GG2b. Furthermore, a plurality of balls, at least some of which have different diameters, may be positioned in the plurality of guide grooves.

[0246] The second magnet 1252b may be positioned to face the second coil 1251b, and the first magnet 1252a may be positioned to face the first coil 1251a.

[0247] For example, at least one of the first coil 1251a and the second coil 1251b may be composed of a plurality of coils. For example, the first optical driving coil 1251 may include a first sub-coil SC1 and a second sub-coil SC2. The first sub-coil SC1 and the second sub-coil SC2 may be arranged along the optical axis direction (Z-axis direction). For example, the first sub-coil SC1 and the second sub-coil SC2 may be arranged in order along the optical axis direction. Also, the first sub-coil SC1 may be arranged to be the closest to the first camera actuator among the first sub-coil SC1 and the second sub-coil SC2. According to the present embodiment, the second camera actuator or the first optical driving unit may include a first driving unit and a second driving unit. The first driving unit may provide a driving force to move the first lens assembly 1222a along the optical axis direction. The first driving unit may include a first coil 1251a and a first magnet 1252a. Also, the first driving unit may include a first driving coil and a first driving magnet. Therefore, the first coil 1251a will be referred to as the "first drive coil" in the following description, and the first magnet 1252a will be referred to as the "first drive magnet" in the following description.

[0248] In addition, the second driving unit may provide a driving force for moving the second lens assembly 1222b along the optical axis direction. The second driving unit may include a second coil 1251b and a second magnet 1252b.

[0249] In addition, the second driving unit may include a second driving coil and a second driving magnet. Therefore, the second coil 1251b will be referred to as the "second driving coil" in the following description. Also, the second magnet 1252b will be referred to as the "second driving magnet" in the following description. The following description will be based on this.

[0250] The elastic portion (not shown) may include a first elastic member (not shown) and a second elastic member (not shown). The first elastic member (not shown) may be coupled to an upper surface of the moving assembly 1222. The second elastic member (not shown) may be coupled to a lower surface of the moving assembly 1222. The first elastic member (not shown) and the second elastic member (not shown) may be formed of a leaf spring as described above. The first elastic member (not shown) and the second elastic member (not shown) may provide elasticity for the movement of the moving assembly 1222. However, the positions are not limited to those described above, and the elastic portion may be disposed in various positions.

[0251] Also, the first optical driving unit 1250 can provide a driving force to move the lens unit 1220 in the third direction (Z-axis direction). Such a first optical driving unit 1250 can include a first optical driving coil 1251 and a first optical driving magnet 1252. The first optical driving coil 1251 and the first optical driving magnet 1252 can be positioned to face each other. For example, the first driving coil 1251a and the first driving magnet 1252a can be positioned to face each other. Also, the second driving coil 1251b and the second driving magnet 1252B can be positioned to face each other. The first driving coil 1251a can be disposed on one side along the second direction in the second housing, and the second driving coil 1251a can be disposed on the other side along the second direction in the second housing.

[0252] In addition, the first optical driving unit 1250 may further include a third Hall sensor unit. The third Hall sensor unit 1253 includes at least one first Hall sensor 1253a and a second Hall sensor 1253b, and may be located inside or outside the first optical driving coil 1251.

[0253] An electromagnetic force formed between the first optical drive coil 1251 and the first optical drive magnet 1252 may cause the translation assembly to move in a third direction (Z-axis direction).

[0254] The first optical driving coil 1251 may include a first coil 1251a and a second coil 1251b. Also, as described above, the first coil 1251a and the second coil 1251b may be composed of a plurality of sub-coils. Also, the first coil 1251a and the second coil 1251b may be disposed in a hole formed in a side of the second housing 1230. Also, the first coil 1251a and the second coil 1251b may be electrically connected to the second substrate unit 1270. Thus, the first coil 1251a and the second coil 1251b may be supplied with a current, etc., through the second substrate unit 1270.

[0255] Additionally, the first optical drive coil 1251 may be coupled to the second substrate portion 1270, such as through a yoke.

[0256] Also, in some embodiments, the first optical driving coil 1251 is a fixed element together with the second substrate portion 1270. In contrast, the first optical driving magnet 1252 is a moving element that moves in the optical axis direction (Z-axis direction) together with the first and second assemblies.

[0257] The first optically driven magnet 1252 may include a first magnet 1252a and a second magnet 1252b.

[0258] Also, the first magnet 1252a may face the first subcoil SC1a and the second subcoil SC2a. The second magnet 1252b may face the third subcoil SC1b and the fourth subcoil SC2b. The first subcoil SC1a may be positioned so as to overlap the third subcoil SC1b in the second direction. The second subcoil SC2a may be positioned so as to overlap the fourth subcoil SC2b in the second direction. In this manner, the first magnet 1252a and the second magnet 1252b may be disposed so as to face two subcoils in the same manner. In this specification, the first driving coil or the first coils SC1a and SC1b, and the second driving coil or the second coils SC2a and SC2b are used as references. However, in this specification, the driving coils that drive the second lens assembly are also referred to as the third subcoil and the fourth subcoil.

[0259] The first drive coil 1251a may include a first sub-coil SC1a and a second sub-coil SC2a, and the second drive coil 1251b may include a third sub-coil SC1b and a fourth sub-coil SC2b.

[0260] Also, the first subcoil SC1a and the second subcoil SC2a may be arranged side by side along the optical axis direction (Z-axis direction). Also, the first subcoil SC1a and the second subcoil SC2a may be arranged apart from each other in the optical axis direction. The first subcoil SC1a and the second subcoil SC2a may be connected in parallel to each other. For example, one end or the other end of the first subcoil SC1a may be connected to one end or the other end of the second subcoil SC2a by one node. Also, the other end or the other end of the first subcoil SC1a may be connected to one end or the other end of the second subcoil SC2a by another node. That is, the current applied to the first subcoil SC1a and the second subcoil SC2a may be distributed to each subcoil. As a result, the first subcoil SC1a and the second subcoil SC2a are electrically connected in parallel, and heat generation can be reduced.

[0261] Also, the polarity of one surface of the first drive magnet 1252a facing the first drive coils SC1a and SC2a may be the same as the polarity of one surface of the second drive magnet 1252b facing the second drive coils SC1b and SC2b. For example, the inner surface of the first drive magnet 1252a and the inner surface of the second drive magnet 1252b may have either an N pole or an S pole (e.g., an N pole). The outer surface of the first drive magnet 1252a and the outer surface of the second drive magnet 1252b may have the other of an N pole or an S pole (e.g., an S pole). Here, the inner surface may be a side surface adjacent to the optical axis based on the optical axis, and the outer surface may be a side surface far from the optical axis.

[0262] The third sub-coil SC1b and the fourth sub-coil SC2b may be arranged side by side along the optical axis direction (Z-axis direction). The third sub-coil SC1b and the fourth sub-coil SC2b may be arranged spaced apart from each other in the optical axis direction.

[0263] The third subcoil SC1b and the fourth subcoil SC2b may be connected in parallel to each other. For example, one end or the other end of the third subcoil SC1b may be connected to one end or the other end of the fourth subcoil SC2b through one node.

[0264] The first magnet 1252a and the second magnet 1252b may be disposed in the above-mentioned grooves of the moving assembly 1222 and positioned to correspond to the first coil 1251a and the second coil 1251b. The first optical drive magnet 1252 may also be coupled to the first and second lens assemblies (or moving assemblies) together with a yoke, which will be described later.

[0265] Also, the first magnet 1252a may have a first pole on a first face BSF1 facing a first optical drive coil (e.g., a first coil). Also, the first magnet 1252a may have a second pole on a second face BSF2 opposite the first face BSF1. The second magnet 1252b may have a first pole on a first face BSF1 facing a second optical drive coil (e.g., a second coil). Also, the second magnet 1252b may have a second pole on a second face BSF2 opposite the first face BSF1. The first pole may be either a north pole or a south pole. Also, the second pole may be the other of a north pole or a south pole.

[0266] The base portion 1260 may be located between the lens portion 1220 and the image sensor IS. Components such as a filter may be fixed to the base portion 1260. The base portion 1260 may also be disposed so as to surround the image sensor described above. With such a configuration, the image sensor is free from foreign matter and the like, and therefore the reliability of the element can be improved. However, in some of the following drawings, this will be removed for explanation.

[0267] The second camera actuator 1200 may be a zoom actuator or an auto focus actuator. For example, the second camera actuator may support one or more lenses and perform an auto focus function or a zoom function by moving the lenses according to a control signal from a predetermined control unit.

[0268] Also, the second camera actuator may be a fixed zoom or a continuous zoom. For example, the second camera actuator may provide movement of lens group 1221.

[0269] Further, the second camera actuator may be composed of a plurality of lens assemblies. For example, the second camera actuator may include at least one of a third lens assembly (not shown) and a guide pin (not shown) in addition to the first lens assembly 1222a and the second lens assembly 1222b. The above-mentioned contents can be applied to this. As a result, the second camera actuator can perform a high-magnification zoom function through the first optical actuator. For example, the first lens assembly 1222a and the second lens assembly 1222b may be moving lenses that move through the first optical actuator and the guide pin (not shown), and the third lens assembly (not shown) may be a fixed lens, but is not limited thereto. For example, the third lens assembly (not shown) may function as a condenser that focuses light at a specific position, and the first lens assembly may function as a variator that refocuses an image focused by the third lens assembly (not shown), which is a condenser, at another position. Meanwhile, in the first lens assembly, the distance to the subject or the image distance may change significantly, and the magnification may change significantly, so the first lens assembly, which is a variable magnification element, may play an important role in changing the focal length or magnification of the optical system. Meanwhile, the image point formed by the first lens assembly, which is a variable magnification element, may vary slightly depending on the position. Thus, the second lens assembly may perform a position compensation function for the image formed by the variable magnification element. For example, the second lens assembly may perform a compensator function that accurately images the image point formed by the second lens assembly 1222b, which is a variable magnification element, at the image sensor position. However, the configuration of this embodiment will be described with reference to the following drawings.

[0270] The image sensor may be located inside or outside the second camera actuator. In an embodiment, the image sensor may be located outside the second camera actuator as shown. For example, the image sensor may be located on a circuit board. The image sensor may receive light and convert the received light into an electrical signal. The image sensor may be in the form of an array of multiple pixels. The image sensor may be located on the optical axis.

[0271] The second substrate portion 1270 may contact the side of the second housing. For example, the second substrate portion 1270 may be located on the outer surface of the first side (first side surface) and the outer surface of the second side (second side surface) of the second housing, particularly the 2-2 housing, and may contact the first side surface and the second side surface.

[0272] The second camera actuator 1200 may also include a first housing yoke HY1 and a second housing yoke HY2 disposed on at least one of the upper and lower parts of the 2-2 housing 1232 (or the second housing).

[0273] The first housing yoke HY1 and the second housing yoke HY2 may be located outside the upper and lower surfaces of the 2-2 housing 1232. Thus, the first housing yoke HY1 and the second housing yoke HY2 may block the magnetic force generated by the first coil 1251a, the second coil 1251b, the first magnet 1252a, and the second magnet 1252b from being transmitted to the opposing elements. For example, the first housing yoke HY1 and the second housing yoke HY2 may reduce the amount of the magnetic force generated by the first coil 1251a and the first magnet 1252a that is transmitted toward the second coil 1251b and the second magnet 1252b.

[0274] 10b, the first lens assembly 1222a can move along the optical axis (Z-axis) direction within the second housing, and the second lens assembly 1222b can move along the optical axis (Z-axis) direction within the second housing.

[0275] A first mark MK1 may be located on the upper surface of the first lens assembly 1222a. A second mark MK2 may be located on the upper surface of the second lens assembly 1222b. The first mark MK1 may be multiple. The second mark MK2 may be multiple. The multiple first marks MK1 may be arranged side by side along the optical axis direction. The multiple second marks MK2 may be arranged side by side along the optical axis direction. In addition, the first mark MK1 and the second mark MK2 can be recognized by a vision inspection. As a result, the positions of the first lens assembly 1222a and the second lens assembly 1222b can be recognized by the first mark MK1 and the second mark MK2. In addition, by recognizing the first mark MK1 and the second mark MK2, it can be accurately inspected whether the movement of the first lens assembly 1222a and the second lens assembly 1222b along the optical axis direction is performed accurately.

[0276] The first coil 1251a can be easily coupled to a circuit board by an outer substrate yoke. The second coil 1251b can be easily coupled to a circuit board by an outer substrate yoke.

[0277] Also, the first lens assembly 1222a can return to a position determined by the adjacent substrate yoke, i.e., the first lens assembly 1222a can move to a specific position due to a restoring force from the substrate yoke.

[0278] Also, the second lens assembly 1222b can return to a position determined by the adjacent substrate yoke, i.e., the second lens assembly 1222b can move to a specific position due to a restoring force from the substrate yoke.

[0279] 10c, in the first state, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the horizontal direction. The first Hall sensor 1253a may be disposed in the first sub-coil SC1a, and the second Hall sensor 1253b may be disposed in the third sub-coil SC1b. There may be cases where no Hall sensor is disposed in the second sub-coil SC2a and the fourth sub-coil SC2b. Furthermore, by disposing a plurality of Hall sensors in the first sub-coil SC1a and the third sub-coil SC1b facing each other, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the horizontal direction (Y-axis direction).

[0280] In addition, in the second camera actuator and the camera device according to various states and embodiments below, the first stopper STP1 and the second stopper STP2 may block the movement of the first lens assembly 1222a and the second lens assembly 1222b in the optical axis direction. That is, the distance between the first stopper ST1 and the second stopper STP2 in the optical axis direction may be less than the movement range of the first lens assembly 1222a or the second lens assembly 1222b in the optical axis direction. The first stopper STP1 may be disposed adjacent to the first camera actuator compared to the second stopper STP2. Also, the second stopper STP2 may be positioned adjacent to the image sensor compared to the first stopper STP1.

[0281] Referring to FIG. 10d, in the second state, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap at least partially in the horizontal direction. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may be shifted in the horizontal direction and not overlap each other. Specifically, the first Hall sensor 1253a may be disposed in the first sub-coil SC1a, and the second Hall sensor 1253b may be disposed in the fourth sub-coil SC2b. There may be no Hall sensor disposed in the second sub-coil SC2a and the third sub-coil SC1b. Furthermore, by disposing a plurality of Hall sensors in the first sub-coil SC1a and the fourth sub-coil SC2b that do not face each other, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the horizontal direction (Y-axis direction).

[0282] 10e, in the third state, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the horizontal direction. The first Hall sensor 1253a may be disposed in the second sub-coil SC2a, and the second Hall sensor 1253b may be disposed in the fourth sub-coil SC2b. There may be cases where no Hall sensor is disposed in the first sub-coil SC1a and the third sub-coil SC1b. Furthermore, by disposing multiple Hall sensors in the second sub-coil SC2a and the fourth sub-coil SC2b facing each other, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the horizontal direction (Y-axis direction).

[0283] [Table 1]

[0284] Referring to Table 1, in the first state, the first magnet and the first lens assembly overlap the first Hall sensor in the horizontal direction (Y-axis direction). Also, the second magnet and the second lens assembly do not overlap the second Hall sensor in the horizontal direction (Y-axis direction). Also, when there is movement of the first lens assembly (movement of the first magnet), there are cases where the second lens assembly and the second magnet do not overlap the second Hall sensor in the horizontal direction. As a result, the magnetic force generated by the first magnet is largely provided to the second Hall sensor, and even when there is no movement of the second magnet or the second lens assembly, there is a relatively large change in the second Hall sensor.

[0285] In contrast, even if there is movement of the second magnet (corresponding to movement of the second lens assembly), the magnetic force generated by the second magnet is partially blocked by the first magnet or the first lens assembly, and the change in the first Hall sensor is relatively small.

[0286] In the second state, the first magnet and the first lens assembly overlap the first Hall sensor in the horizontal direction (Y-axis direction), and the second magnet and the second lens assembly overlap the second Hall sensor in the horizontal direction (Y-axis direction).

[0287] In addition, when there is movement of the first lens assembly (movement of the first magnet), since the second lens assembly and the second magnet overlap horizontally with the second Hall sensor, the magnetic force generated by the first magnet is partially blocked by the second magnet or the second lens assembly, and the change in the second Hall sensor is relatively small.

[0288] In contrast, even if there is movement of the second lens assembly (movement of the second magnet), the magnetic force generated by the second magnet is partially blocked by the first magnet or the first lens assembly, and the change in the first Hall sensor is relatively small.

[0289] In the third state, the first magnet and the first lens assembly do not overlap the first Hall sensor in the horizontal direction (Y-axis direction), and the second magnet and the second lens assembly overlap the second Hall sensor in the horizontal direction (Y-axis direction).

[0290] In addition, even if there is movement of the first lens assembly (movement of the first magnet), the magnetic force generated by the first magnet is partially blocked by the second magnet or the second lens assembly, so the change in the second Hall sensor is relatively small.

[0291] However, there are cases where the first lens assembly and the first magnet do not overlap the first Hall sensor in the horizontal direction, and as a result, the magnetic force generated by the second magnet is provided to the first Hall sensor in large amounts, and even if there is no movement of the first magnet or the first lens assembly, there is a relatively large change in the first Hall sensor.

[0292] Referring to FIG. 10f, in the second camera actuator and camera device of the embodiment, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap at least partially in a direction perpendicular to the optical axis (e.g., the horizontal direction (Y-axis direction)).

[0293] For example, the ratio of the area of ​​the first hall sensor 1253a to the area of ​​the second hall sensor 1253b overlapping in the horizontal direction (Y-axis direction) may be 1:0.5 or less. That is, as shown in the figure, two or less of the four first hall sensors 1253a may overlap two of the four second hall sensors 1253b in the horizontal direction. That is, the first hall sensor 1253a and the second hall sensor 1253b may be arranged with at least a portion shifted from each other in the horizontal direction. With this configuration, the first hall sensor 1253a and the second hall sensor 1253b can reduce the influence of the magnetic force generated by magnets that do not face each other, i.e., the second magnet 1252b and the first magnet 1252a. As a result, the first hall sensor 1253a and the second hall sensor 1253b can accurately detect the positions of the first lens assembly and the second lens assembly.

[0294] Furthermore, according to this embodiment, when the first lens assembly 1222a and the second lens assembly 1222b move to the maximum in the optical axis direction (Z-axis direction) (dmax), the second lens assembly 1222b may come into contact with the second stopper STP2, and the first lens assembly 1222a may come into contact with the first stopper STP1.

[0295] Furthermore, in the maximum movement state (having dmax), the first Hall sensor 1253a may face the first magnet 1252a, and the second Hall sensor 1252b may face the second magnet 1252b. Also, when the first lens assembly 1222a and the second lens assembly 1222b are at their maximum movement (maximum separation state, dmax) in the optical axis direction (Z-axis direction), the minimum distance da between the first Hall sensor 1253a and the second Hall sensor 1253b may be greater than the maximum distance dcoil between the first coil 1251a and the second coil 1251b in the horizontal direction (Y-axis direction).

[0296] Also, according to this embodiment, the first coil 1251a and the second coil 1251b may be arranged symmetrically with respect to the optical axis. Also, the first Hall sensor 1253a may be located in the first coil 1251a so as to be closer to the first camera actuator than the second coil 1251b (or the second Hall sensor). Also, the second Hall sensor 1253b may be arranged in the second coil 1251b so as to be closer to the image sensor than the first coil 1251a (or the first Hall sensor 1253a). As a result, the second lens assembly 1222b is arranged closer to the image sensor than the first lens assembly 1222a, so that the arrangement of the first and second Hall sensors can correspond to such a structure.

[0297] In the second camera actuator according to the embodiment, as described above, the magnetic influence of the magnet (or coil) of a lens assembly on the movement of another lens assembly can be suppressed. This makes it possible to reduce the influence of magnetic forces from magnets other than the adjacent magnets on the first hall sensor 1253a and the second hall sensor 1253b, i.e., cross talk.

[0298] 10g and 10h, the magnet, which is a moving part, may move along the optical axis direction with respect to the coil, which is a fixed part. In the drawings, the description will be made based on one coil. However, as described above, the coil may be composed of a plurality of sub-coils, which will be described later with reference to FIGS. 16 and 17. Furthermore, for one coil (or sub-coil), the magnet may have a stroke within the length of the coil (or sub-coil) in the optical axis direction. Also, the plurality of first hall sensors 1253a are located in the inner hole of the first coil 1251a and can detect the magnetic force caused by the movement of the first magnet 1252a. Hereinafter, the description will be made based on the first coil 1251a, the first magnet 1252a, and the first hall sensor 1253a. However, the contents of these may be similarly applied to the second coil, the second magnet, and the second hall sensor.

[0299] As shown, the first magnet 1252a may have a predetermined length RG2 in the optical axis direction. In this case, the first magnet 1252a may have a stroke RG1 in the first coil 1251a that is smaller than the length of the inner hole in the optical axis direction. As a result, the maximum stroke RG3 of the first magnet may correspond to the sum of the stroke RG1 of the first magnet 1252a and the length RG2 of the first magnet 1252a in the optical axis direction.

[0300] Furthermore, the first magnet 1252a may not overlap with the inner hole of the first coil 1251a in the region where the first magnet 1252a can stroke or move due to the movement of the first magnet 1252a in the optical axis direction. Also, at least one Hall sensor 1253a may be located in a non-overlapping region GR1 between the first magnet 1252a and the inner hole of the first coil 1251a. In this case, the at least one Hall sensor located in the non-overlapping region GR1 is hereinafter referred to as a "non-overlapping Hall sensor".

[0301] Since such a non-overlapping Hall sensor does not overlap with the first magnet 1252a in the horizontal direction, it may be difficult for the first magnet 1252a to block magnetic forces (e.g., second magnets, second coils, etc.) other than the magnetic force caused by the first magnet 1252a.

[0302] Also, the non-overlapping Hall sensor may be changed by the movement of the first magnet 1252a. That is, the length, movement range, maximum movement range, etc. of the first magnet described above may be changed. However, the size of the length, movement range, and maximum movement range of the first magnet along the optical axis direction may be the same. For example, the first magnet 1252a may have a predetermined length RG2' in the optical axis direction in response to the movement of the first magnet 1252a or the first lens assembly. At this time, the first magnet 1252a may have a stroke RG1' that is smaller than the length of the inner hole in the optical axis direction of the first coil 1251a. As a result, the maximum movement range RG3' of the first magnet may correspond to the sum of the movement range RG1' of the first magnet 1252a and the length RG2' of the first magnet 1252a in the optical axis direction.

[0303] The non-overlapping region GR2 may be a region that overlaps with the Hall sensor located at the outermost position along the optical axis direction. In this manner, as described above, the non-overlapping region may also change depending on the movement of the first magnet.

[0304] Furthermore, magnetic shielding can be performed on the first Hall sensor 1253a and the first magnet 1252a, which are different from each other, in response to the movement of the first magnet or the first lens assembly. Thus, by disposing the first and second magnets for the first and second Hall sensors disposed on both sides in the second camera actuator according to the above-described embodiment, it is possible to suppress the influence (cross talk) of magnetic forces from the first and second magnets disposed on the opposite sides. This allows accurate driving of the movements of the first and second lens assemblies.

[0305] FIG. 11 is an exploded perspective view of the drive of the first lens assembly, and FIG. 12a is an exploded perspective view of the drive of the second lens assembly.

[0306] With reference to Figs. 11 and 12, the electromagnetic force will be described below with respect to one coil. In the camera device according to the embodiment, an electromagnetic force DEM1 is generated between the first magnet 1252a and the first coil 1251a, and the first lens assembly 1222a may move horizontally to the optical axis, i.e., in the third direction (Z-axis direction) or in the direction opposite to the third direction, along a rail located on the inner surface of the housing through the first ball B1. At this time, the first magnet 1252a and the second magnet 1252b do not move to the area facing the edges of the first and second sub-coils. As a result, the electromagnetic force is formed based on the current flow in the area where the first sub-coil and the second sub-coil are adjacent to each other.

[0307] Specifically, in the camera device according to the embodiment, the first magnet 1252a may be provided in the first lens assembly 1222a by, for example, a single-pole magnetization method. For example, in the embodiment, a surface (first surface) facing the outer surface of the first magnet 1252a may be an S pole. Also, the outer surface of the first magnet 1252a may be a surface facing the first coil 1251a. Also, a surface opposite to the first surface may be an N pole. Therefore, only one of the N pole and the S pole may be positioned to face the first coil 1251a. Here, the description will be given based on the outer surface of the first magnet 1252a being an S pole. Furthermore, the first coil 1251a is composed of a plurality of sub-coils, and the currents in the plurality of sub-coils may flow in opposite directions. That is, in the region of the first sub-coil SC1a adjacent to the second sub-coil SC2a, the current may flow in the same direction as "DE1".

[0308] That is, the first region of the first sub-coil SC1a and the second region of the second sub-coil SC2a may have the same direction of current. The first region of the first sub-coil SC1a overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction and is disposed perpendicular to the optical axis direction (for example, disposed along the first direction). The second region of the second sub-coil Sc2a overlaps with the first drive magnet 1252a in a direction (second direction) perpendicular to the optical axis direction and is disposed perpendicular to the optical axis direction (for example, disposed along the first direction).

[0309] Also, as shown in the figure, in an embodiment, when a magnetic force is applied in a second direction (Y-axis direction) at the S pole of the first magnet 1252a and a current DE1 flows in a first direction (X-axis direction) in the first coil 1251a, an electromagnetic force DEM1 can act in a third direction (Z-axis direction) due to the interaction of electromagnetic forces (e.g., Fleming's left-hand rule).

[0310] At this time, since the first coil 1251a is fixed to the side of the second housing, the first lens assembly 1222a in which the first magnet 1252a is arranged may be moved in the opposite direction to the Z-axis direction by the electromagnetic force DEM1 according to the direction of the current. That is, the first optical drive magnet may move in the opposite direction to the electromagnetic force applied to the first optical drive coil. Also, the direction of the electromagnetic force may be changed depending on the current in the coil and the magnetic force of the magnet.

[0311] Therefore, the first lens assembly 1222a can move along a rail located on the inner surface of the housing through the first ball B1 in the third direction or in a direction parallel to the optical axis direction (both directions). At this time, the electromagnetic force DEM1 can be controlled in proportion to the current DE1 applied to the first coil 1251a.

[0312] The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 in which the first ball B1 is seated. Also, the first lens assembly 1222a or the second lens assembly 1222b may include a second recess RS2 in which the second ball B2 is seated. The first recess RS1 and the second recess RS2 may be multiple. The first recess RS1 may have a length set in advance in the optical axis direction (Z-axis direction). Also, the second recess RS2 may have a length set in advance in the optical axis direction (Z-axis direction). This allows the first ball B1 and the second ball B2 to adjust the moving distance in the optical axis direction within each recess. In other words, the first recess RS1 or the second recess RS2 may be a stopper for the first and second balls B1 and B2.

[0313] In the camera device according to the embodiment, the second magnet 1252b can be provided to the second lens assembly 1222b by, for example, a monopole magnetization method.

[0314] Also, the outer surface of the first magnet 1252a may be the surface facing the first coil 1251a. Also, the surface opposite to the first surface may be the N pole. As a result, only one of the N pole and the S pole may be positioned to face the first coil 1251a. Here, the description will be given based on the outer surface of the first magnet 1252a being the S pole. Furthermore, the first coil 1251a is composed of a plurality of sub-coils, and currents may flow in opposite directions in the plurality of sub-coils. That is, in the first sub-coil SC1a, the current may flow in the same direction as "DE1" in the region adjacent to the second sub-coil SC2a.

[0315] For example, in an embodiment, either the N pole or the S pole of the second magnet 1252b may be positioned to face the second coil 1251b. Also, in an embodiment, the surface (first surface) facing the outer surface of the second magnet 1252b may be the S pole. Alternatively, the first surface may be the N pole. In the following, as illustrated, a description will be given based on the first surface being the N pole.

[0316] Furthermore, the second coil 1251b may be made up of a plurality of sub-coils, in which currents may flow in opposite directions, i.e., in the fourth sub-coil SC1b, in a region adjacent to the third sub-coil SC2b, the current may flow in the same direction as "DE2".

[0317] In an embodiment, when a magnetic force DM2 is applied in the second direction (Y-axis direction) to the first surface (N-pole) of the second magnet 1252b, and a current DE2 flows in the first direction (X-axis direction) in the second coil 1251b corresponding to the N-pole, an electromagnetic force DEM2 can act in the third direction (Z-axis direction) due to the interaction of electromagnetic forces (e.g., Fleming's left-hand rule).

[0318] At this time, since the second coil 1251b is fixed to the side of the second housing, the second lens assembly 1222b in which the second magnet 1252b is disposed may move in the direction opposite to the Z-axis direction due to the electromagnetic force DEM2 according to the direction of the current. For example, as described above, the direction of the electromagnetic force may be changed according to the current of the coil and the magnetic force of the magnet. As a result, the second lens assembly 1222b may move along the rail located on the inner surface of the second housing through the second ball B2 in a direction parallel to the third direction (Z-axis direction). At this time, the electromagnetic force DEM2 may be controlled in proportion to the current DE2 applied to the second coil 1251b.

[0319] FIG. 13 is a diagram illustrating the driving of the second camera actuator according to the embodiment.

[0320] 13, in the camera device according to the embodiment, the first optical driving unit can provide driving forces F3A, F3B, F4A, and F4B that move the first lens assembly 1222a and the second lens assembly 1222b of the lens unit 1220 along the third direction (Z-axis direction). As described above, the first optical driving unit can include the first optical driving coil 1251 and the first optical driving magnet 1252. In addition, the lens unit 1220 can move along the third direction (Z-axis direction) due to the electromagnetic force generated between the first optical driving coil 1251 and the first optical driving magnet 1252.

[0321] At this time, the first coil 1251a and the second coil 1251b may be disposed in holes formed on the sides (e.g., the first side and the second side) of the second housing 1230. Also, the second coil 1251b may be electrically connected to the first board. The first coil 1251a may be electrically connected to the second board. Thus, the first coil 1251a and the second coil 1251b may receive a drive signal (e.g., a current) from a driver of the circuit board 1300 through the second board unit 1270.

[0322] At this time, the first lens assembly 1222a on which the first magnet 1252a is seated may move along the third direction (Z-axis direction) due to electromagnetic forces F3A and F3B between the first coil 1251a and the first magnet 1252a. Also, the second lens group 1221b on which the first lens assembly 1222a is seated may move along the third direction.

[0323] In addition, the second lens assembly 1222b on which the second magnet 1252b is mounted may move along the third direction (Z-axis direction) due to electromagnetic forces F4A and F4B between the second coil 1251b and the second magnet 1252b. In addition, the third lens group 1221c on which the second lens assembly 1222b is mounted may also move along the third direction.

[0324] As a result, as described above, the focal length or magnification of the optical system may be changed by moving the second lens group 1221b and the third lens group 1221c. Depending on the embodiment, the magnification may be changed by moving the second lens group 1221b. That is, zooming may be performed. Also, the focus may be adjusted by moving the third lens group 1221c. That is, auto focusing may be performed. With this configuration, the second camera actuator may be a fixed zoom or a continuous zoom.

[0325] Furthermore, the first Hall sensor 1253a and the second Hall sensor 1253b may be disposed in at least one of the first sub-coil and the second sub-coil. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may partially overlap in the second direction.

[0326] FIG. 14 is a schematic diagram showing a circuit board according to an embodiment.

[0327] 14, as described above, the circuit board 1300 according to the embodiment may include a first circuit board portion 1310 and a second circuit board portion 1320. The first circuit board portion 1310 may be located under a base and coupled to the base. An image sensor IS may be disposed on the first circuit board portion 1310. The first circuit board portion 1310 and the image sensor IS may be electrically connected to each other.

[0328] Also, the second circuit board unit 1320 may be located on a side of the base. In particular, the second circuit board unit 1320 may be located on a first side of the base. In this way, the second circuit board unit 1320 is located adjacent to the first coil located adjacent to the first side, and electrical connection may be easily established.

[0329] Furthermore, the circuit board 1300 may further include a fixed board (not shown) located on a side surface. This allows the circuit board 1300 to be connected to the base while maintaining rigidity through the fixed board, even if the circuit board 1300 is made of a flexible material.

[0330] The second circuit board portion 1320 of the circuit board 1300 may be located on the side of the first optical driver 1250. The circuit board 1300 may be electrically connected to the second optical driver and the first optical driver. For example, the electrical connection may be performed by SMT. However, the present invention is not limited to such a method.

[0331] Such a circuit board 1300 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), a rigid flexible printed circuit board (Rigid Flexible PCB), etc. However, it is not limited to these types.

[0332] In addition, the circuit board 1300 may be electrically connected to other camera modules in the terminal or to a processor of the terminal, so that the camera actuator and the camera device including the same can transmit and receive various signals within the terminal.

[0333] FIG. 15 is a perspective view of a partial configuration of the second camera actuator according to the embodiment.

[0334] 15, the first lens assembly 1222a and the second lens assembly 1222b may be spaced apart in the optical axis direction (Z-axis direction). The first lens assembly 1222a and the second lens assembly 1222b may be moved along the optical axis direction (Z-axis direction) by a first optical drive unit. For example, an auto focus or zoom function may be performed by moving the first lens assembly 1222a and the second lens assembly 1222b.

[0335] Also, the first lens assembly 1222a may include a first lens holder LAH1 that holds and couples the second lens group 1221b. The first lens holder LAH1 may be coupled to the second lens group 1221b. Also, the first lens holder LAH1 may include a first lens hole LH1 for accommodating the second lens group 1221b. That is, the second lens group 1221b including at least one lens may be disposed in the first lens hole LH1. The first guide portion G1 may be disposed at a distance from one side of the first lens holder LAH1. For example, the first guide portion G1 and the first lens holder LAH1 may be disposed sequentially in the second direction (Y-axis direction).

[0336] The second lens assembly 1222b may also include a second lens holder LAH2 that holds and couples the third lens group 1221c. The second lens holder LAH2 may also include a second lens hole LH2 for accommodating the third lens group 1221c. That is, at least one lens may be disposed in the second lens hole LH2.

[0337] The second guide part G2 may be disposed on the other side of the second lens holder LAH2. The second guide part G2 may be disposed opposite to the first guide part G1.

[0338] According to an embodiment, the first guide portion G1 and the second guide portion G2 may at least partially overlap in the second direction (Y-axis direction). With this configuration, the space efficiency of the first optical drive unit for moving the first and second lens assemblies in the second camera actuator is improved, and the second camera actuator may be easily miniaturized.

[0339] In addition, the second guide part G2 and the second lens holder LAH2 may be sequentially arranged in the direction opposite to the second direction (Y-axis direction).

[0340] As described above, the first ball, the first coil, and the like may be arranged in the first guide portion G1, and the second ball, the second coil, and the like may be arranged in the second guide portion G2, as described above.

[0341] Also, according to an embodiment, each of the first and second lens assemblies 1222a, 1222b may include a yoke YK1, YK2 disposed on a side surface thereof.

[0342] The first yoke YK1 may be located on a side of the first lens assembly 1222a. The second yoke YK2 may be located on a side of the second lens assembly 1222b. At least a portion of the first yoke YK1 and the second yoke YK2 may extend outward. As a result, the first yoke YK1 may surround at least a portion of the side of the first magnet 1252a. As shown in the figure, the first yoke YK1 may have a variety of structures that surround the inner surface and a portion of the side of the first magnet 1252a. For example, the first yoke YK1 may be made of divided members, and each divided member may be located on the inner surface and the side of the first magnet 1252a. As a result, the coupling force between the unipolar magnetized first optical drive magnet and the yoke may be improved. Similarly, the second yoke YK2 may surround at least a portion of the side of the second magnet 1252b. As shown in the drawings, the second yoke YK2 may be formed of various structures surrounding the inner surface and part of the side surface of the second magnet 1252b. For example, the second yoke YK2 may be formed of divided members, and each divided member may be located on the inner surface and side surface of the second magnet 1252b.

[0343] Additionally, the yoke may be positioned to mutually couple to the first optical drive coil as well as the first optical drive magnet.

[0344] Also, multiple balls may be located on the outer surfaces of the lens assemblies. As described above, the first ball B1 may be located on the outer surface of the first lens assembly 1222a. The second ball B2 may be located on the outer surface of the second lens assembly 1222b.

[0345] There may be a plurality of first balls B1 and second balls B2. For example, a plurality of first balls B1 may be arranged in a single recess of the first lens assembly 1222a, side by side along the optical axis direction (Z-axis direction). Also, a plurality of second balls B2 may be arranged in a single recess of the second lens assembly 1222b, side by side along the optical axis direction (Z-axis direction).

[0346] For example, the second ball B2 may include a first sub-ball B2a, a second sub-ball B2b, and a third sub-ball B2c. The first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may be arranged side by side along the optical axis direction. This allows the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c to at least partially overlap one another in the optical axis direction.

[0347] Additionally, the first sub-ball B2a and the second sub-ball B2b may be located at the edge of the plurality of balls, and the third sub-ball B2c may be located between the first sub-ball B2a and the second sub-ball B2b.

[0348] The balls may have the same or different diameters. For example, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may at least partially have the same diameters R1, R3, and R2. The first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have different diameters R1, R3, and R2.

[0349] According to an embodiment, the diameters R1 and R3 of the balls (first and second sub-balls) located at the edge may be smaller than the diameter R2 of the ball (third sub-ball) located inside among the plurality of balls. For example, the diameters R1 and R3 of the first sub-ball B2a and the second sub-ball B2b may be smaller than the diameter R2 of the third sub-ball B2c. With this configuration, the movement of the lens assembly by the plurality of balls can be performed accurately without being biased to one side.

[0350] Also, as described above, the first optically driven magnet may be a plurality of magnets, each including a first magnet and a second magnet. Also, the first magnet and the second magnet may be arranged facing each other with the same pole on the outside. That is, the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet may have a first pole. Also, the second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet may have a second pole.

[0351] Figure 16 is a diagram showing the first optical driving coil, first optical driving magnet, and yoke of the embodiment, Figure 17 is a diagram explaining the movement of the first optical driving magnet by the first optical driving unit of the embodiment, and Figure 18 is a diagram explaining the movement of the second and third lens assemblies of the embodiment.

[0352] 16 to 18, the length W5 of the first subcoil SC1a in the optical axis direction (Z-axis direction) may be the same as the length W6 of the second subcoil SC2a in the optical axis direction (Z-axis direction). With this configuration, it is possible to easily control the driving forces of the first subcoil SC1a and the second subcoil SC2a.

[0353] Furthermore, the overall length W1 (or maximum length) of the first optical driving coil in the optical axis direction (Z-axis direction) may be greater than the length W2 (maximum length) of the first optical driving magnet 1252a in the optical axis direction (Z-axis direction). With this configuration, the stroke of the first optical driving magnet can be maximized. Furthermore, a long stroke can be achieved by the unipolar magnetized first optical driving magnet.

[0354] Furthermore, depending on the embodiment, the maximum movement distance MD of the first lens assembly in the optical axis direction may be greater than the length W10 of the hole (or hollow portion) of the first subcoil SC1a in the short axis direction (first direction) and less than or equal to the length W3 of the hole (or hollow portion) of the first subcoil SC1a in the long axis direction (optical axis direction or third direction).

[0355] In addition, the maximum movement distance MD of the first lens assembly may be greater than the length of the hole (or hollow portion) of the second subcoil SC2a in the short axis direction (first direction) and less than or equal to the length W4 of the hole (or hollow portion) of the second subcoil SC2a in the long axis direction (optical axis direction or third direction).

[0356] Furthermore, depending on the embodiment, the maximum movement distance MD3 of the second lens assembly in the optical axis direction may be greater than the length of the hole (or hollow portion) of the third subcoil SC1b in the short axis direction (first direction) and less than or equal to the length of the hole (or hollow portion) of the third subcoil SC1b in the long axis direction (optical axis direction or third direction).

[0357] In addition, the maximum movement distance MD3 of the first lens assembly may be greater than the length of the hole (or hollow portion) of the fourth sub-coil SC2b in the short axis direction (first direction) and less than or equal to the length of the hole (or hollow portion) of the fourth sub-coil SC2b in the long axis direction (optical axis direction or third direction).

[0358] Furthermore, the length W3 of the internal hole of the first sub-coil SC1a in the optical axis direction may be equal to the length W4 of the internal hole of the second sub-coil SC2a in the optical axis direction.

[0359] Additionally, the length W2 of the drive magnet 1252a in the optical axis direction (Z-axis direction) may be greater than the length W3 of the internal hole of the first sub-coil SC1a in the optical axis direction. Additionally, the length W2 of the drive magnet 1252a in the optical axis direction (Z-axis direction) may be greater than the length W4 of the internal hole of the second sub-coil SC2a in the optical axis direction. This allows the first optical drive magnet to move along the optical axis within the entire length of the first optical drive coil in the optical axis direction.

[0360] The maximum length (or width) W11 of the first drive magnet in the short axis direction (or first direction) may be smaller than the maximum length (or width) W12 of the first drive coil in the short axis direction (or first direction). In this case, the maximum length of the first drive coil in the short axis direction (or first direction) may correspond to the distance between the outermost edges of the first drive coil separated in the first direction.

[0361] Also, depending on the embodiment, the hollow portion (or hole) of any of the coils of the first optical drive coil may have a length in the optical axis direction that is greater than its length in the minor axis direction or the first direction. For example, the length W3 of the hole (or hollow portion) of the first subcoil SC1a in the major axis direction (optical axis direction or third direction) may be greater than the length W10 of the hole (or hollow portion) of the first subcoil SC1a in the minor axis direction (first direction). Also, the horizontal length (or width) of the hollow portion of the subcoil may be greater than the vertical length (or height).

[0362] Furthermore, the length W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be greater than the lengths W3, W4 of any of the hollow portions (or holes) of each sub-coil (the first sub-coil to the fourth sub-coil) in the optical axis direction.

[0363] The length W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be smaller than the length or range W7 from one side of the inner hole of the first subcoil SC1a to the other side of the inner hole of the second subcoil SC2a. Here, the one side and the other side of the subcoil refer to the ends in opposite directions along the optical axis direction.

[0364] The length W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be smaller than the length or range W8 from one side of the internal hole of the first subcoil SC1a to one side of the internal hole of the second subcoil SC2a.

[0365] Furthermore, the length W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be smaller than the length or range W9 from one side of the internal hole of the first subcoil SC1a to one side of the internal hole of the second subcoil SC2a.

[0366] The length W2 (maximum length) of the first optical drive magnet in the optical axis direction (Z-axis direction) may be smaller than the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction).

[0367] With this configuration, no back electromotive force is generated when the lens assembly moves along the optical axis direction, and a long stroke can be achieved.

[0368] The length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be 0.6 times or less the maximum length W1 of the corresponding first driving coil in the optical axis direction. Preferably, the length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be 0.55 times or less the maximum length W1 of the corresponding first driving coil in the optical axis direction. More preferably, the length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction) may be 0.5 times or less the maximum length W1 of the corresponding first driving coil in the optical axis direction. This allows the camera device to provide a long stroke with the back electromotive force minimized.

[0369] The maximum movement distance MD of the first lens assembly in the optical axis direction may be smaller than the length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction). For example, the maximum movement distance MD of the first lens assembly in the optical axis direction may be 0.66 times or more and 0.92 times or less of the length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction). Preferably, the maximum movement distance MD of the first lens assembly in the optical axis direction may be 0.7 times or more and 0.90 times or less of the length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction). More preferably, the maximum movement distance MD of the first lens assembly in the optical axis direction may be 0.74 times or more and 0.88 times or less of the length (maximum length) W2 of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction). This makes it possible to suppress the generation of counter electromotive force as much as possible.

[0370] Depending on the embodiment, the overall length W1 (or maximum length) of the first optical driving coil in the optical axis direction (Z-axis direction) may be 18 mm to 20 mm. Furthermore, the length W2 of the first optical driving magnet in the optical axis direction (Z-axis direction) may be 8 mm to 12 mm. Furthermore, the length W3 of the first sub-coil SC1a in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) may be 5.6 mm to 8.7 mm. Furthermore, the length W4 of the second sub-coil SC2a in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) may be 5.6 mm to 8.7 mm.

[0371] The length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be 8 mm to 10 mm, however, as described above, the length W5 of the first sub-coil SC1a in the optical axis direction (Z-axis direction) may be greater than or equal to the length W2 of the first optically driving magnet in the optical axis direction (Z-axis direction).

[0372] Furthermore, the length W6 of the second sub-coil SC2a in the optical axis direction (Z-axis direction) may be 8 mm to 10 mm. However, as described above, the length W5 of the second sub-coil SC2a in the optical axis direction (Z-axis direction) may be greater than or equal to the length W2 of the first optically driving magnet in the optical axis direction (Z-axis direction).

[0373] A length W7 from one side of the inner hole of the first sub-coil SC1a to the other side of the inner hole of the second sub-coil SC2a may be 13.6 mm to 20.7 mm.

[0374] Also, the length or range W8 from one side of the inner hole of the first subcoil SC1a to one side of the inner hole of the second subcoil SC2a may be 8 mm to 12 mm. Also, the length or range W8 from one side of the inner hole of the first subcoil SC1a to one side of the inner hole of the second subcoil SC2a may be greater than or equal to the length W2 in the optical axis direction (Z-axis direction) of the first optically driving magnet.

[0375] A length or range W9 from one side of the inner hole of the first subcoil SC1a to one side of the inner hole of the second subcoil SC2a may be 8 mm to 12 mm. The length or range W9 from one side of the inner hole of the first subcoil SC1a to one side of the inner hole of the second subcoil SC2a may be greater than or equal to the length W2 in the optical axis direction (Z-axis direction) of the first optically driving magnet.

[0376] In addition, depending on the embodiment, currents may flow in different directions in the first sub-coil SC1a and the second sub-coil SC2a due to the unipolar magnetization of the first optically driving magnet, for example, currents may flow in one direction, either clockwise or counterclockwise, in the first sub-coil SC1a, and currents may flow in the other direction, either clockwise or counterclockwise, in the second sub-coil SC2a.

[0377] Furthermore, the length W2 of the first optical driving magnet in the optical axis direction (Z-axis direction) may be greater than the movement distances MD2, MD3 of the lens assemblies in the optical axis direction. That is, the length W2 of the first optical driving magnet in the optical axis direction (Z-axis direction) may be greater than the maximum movement distance of the first lens assembly or the maximum movement distance of the second lens assembly. With this configuration, it is possible to safely provide a driving force for movement in the optical axis direction.

[0378] The first optical drive magnet (e.g., first magnet 1252a) may move in the optical axis direction (Z-axis direction) within a range W7 from one side of the internal hole of the first subcoil SC1a to the other side of the internal hole of the second subcoil SC2a. That is, the first optical drive magnet may move in the optical axis direction within a maximum movement distance (or movement range) (MD) of the hole in the first optical drive coil in the optical axis direction.

[0379] Furthermore, as described above, there may be multiple lens assemblies, and the lens assembly located at the rear end of the multiple lens assemblies may have a greater distance of movement in the optical axis direction than the lens assembly located at the front end.

[0380] For example, the movement distance MD2 of the first lens assembly 1222a in the optical axis direction (Z-axis direction) may be smaller than the movement distance MD3 of the second lens assembly 1222b in the optical axis direction (Z-axis direction). In other words, the movement distance of the second lens assembly 1222b in the optical axis direction may be larger than the movement distance of the first lens assembly in the optical axis direction. The first lens assembly 1222a may be located at the front end of the second lens assembly 1222b.

[0381] Furthermore, in the camera actuator according to the embodiment, the first optical driving magnet 1252a can move from "center" to "maximum movement 1" or "maximum movement 2". Here, in the case of "center", the first optical driving magnet 1252a can overlap with the first sub-coil SC1a and the second sub-coil SC2a in the second direction. In other words, the first sub-coil SC1a and the second sub-coil SC2a can both face the first optical driving magnet.

[0382] In addition, since the first sub-coil SC1a is a coil extending in the first direction that actually provides a driving force by electromagnetic force, the overlapping area of ​​the first sub-coil SC1a and the first optically driven magnet 1252a may be the same as the overlapping area of ​​the second sub-coil SC2a and the first optically driven magnet 1252a, thereby minimizing the generation of back electromotive force and realizing a long stroke.

[0383] Also, in the case of "maximum movement 1", the first optically driven magnet 1252a may move to the maximum in the direction opposite to the third direction (Z-axis direction). At this time, the first optically driven magnet 1252a may have a larger area overlapping with the first subcoil SC1a than the second subcoil SC2a. Furthermore, the first optically driven magnet 1252a may overlap at least a part of the inner hole of the first subcoil SC1a. More specifically, the first optically driven magnet 1252a may be separated from the edge of the inner hole of the first subcoil SC1a by a predetermined separation distance GP2 in the optical axis direction. With this configuration, the back electromotive force generated at the end of the first subcoil SC1a can be reduced. For example, the first optically driven magnet 1252a may move to the maximum stroke to the area not overlapping with the end of the first subcoil SC1a in the direction opposite to the optical axis direction in the second direction (Y-axis direction).

[0384] Also, in the case of "maximum movement 2", the first optically driven magnet 1252a may move to the maximum in the third direction (Z-axis direction). At this time, the first optically driven magnet 1252a may have a larger area overlapping with the second subcoil SC2a than the first subcoil SC1a. Furthermore, the first optically driven magnet 1252a may overlap at least a part of the inner hole of the second subcoil SC2a. More specifically, the first optically driven magnet 1252a may be separated from the edge of the inner hole of the second subcoil SC2a by a predetermined separation distance GP1 in the optical axis direction. With this configuration, the back electromotive force generated at the end of the second subcoil SC2a can be reduced. For example, the first optically driven magnet 1252a may move to the maximum stroke to the area not overlapping with the end of the second subcoil SC2a in the optical axis direction in the second direction (Y-axis direction).

[0385] Therefore, even if the length in the optical axis direction of the first optical driving magnet 1252a is small, a long stroke of the camera actuator can be efficiently achieved by monopole magnetization and the direction of the current in the multiple first optical driving coils.

[0386] Also, the maximum movement distance of the first optical drive magnet 1252a may correspond to the length in the optical axis direction of the first and second recesses that accommodate the first ball or the second ball in the first lens assembly described above. Also, the maximum movement distance of the first optical drive magnet 1252a may correspond to the distance that the first optical drive magnet 1252a moves in the optical axis direction (Z-axis direction) from maximum movement 1 to maximum movement 2. Alternatively, the maximum movement distance of the first optical drive magnet 1252a may correspond to the interval between the stoppers that limit the movement of the first ball or the second ball in the optical axis direction. Alternatively, the maximum movement distance of the first optical drive magnet 1252a is the maximum distance that the bobbin can move, and may correspond to the separation distance in the optical axis direction between the stopper located in the optical axis direction relative to the bobbin and the stopper located in the opposite direction to the optical axis direction.

[0387] Also, the maximum movement distance of the first optical driving magnet 1252a may correspond to twice the distance moved from the center to the maximum movement 1. Also, the movement distance of the first optical driving magnet 1252a according to the embodiment may be −4 mm to +4 mm with respect to the center. More specifically, the movement distance of the first optical driving magnet 1252a may be −3.8 mm to +3.8 mm with respect to the center. More specifically, the movement distance of the first optical driving magnet 1252a may be −3.5 mm to +3.5 mm with respect to the center. Here, the movement distance from the center in the optical axis direction is “+”, and the direction opposite to the optical axis direction is “−”. As a result, the first optical driving magnet 1252a according to the embodiment (or at least one of the first lens assembly and the second lens assembly) may move in the range of 0 mm to 12 mm along the optical axis direction. Also, the above-mentioned maximum movement distance may correspond to the maximum stroke of the lens assembly in the camera module.

[0388] As described above, the third housing yoke according to the embodiment can suppress the magnetic force generated by the first magnet and the second magnet from moving in the opposite direction.

[0389] FIG. 19 is a block diagram showing the configuration of a camera device according to an embodiment of the present invention, and FIG. 20 is a block diagram showing a detailed configuration of a position sensor unit in FIG.

[0390] Referring to FIG. 19, the camera device may include an image sensor 110, an image signal processing unit 120, a display unit 130, a first lens driving unit 140, a second lens driving unit 150, a first position sensor unit 160, a second position sensor unit 170, a storage unit 180, and a control unit 190.

[0391] As described above, the image sensor 110 processes an optical image of a subject captured through a lens. To this end, the image sensor 110 can pre-process the image acquired through the lens. The image sensor 110 can also convert the pre-processed image into electrical data and output it.

[0392] Such an image sensor 110 corresponds to the image sensor IS described above. The image sensor 110 has a configuration in which a plurality of photodetectors are integrated as individual pixels, and converts image information of a subject into electrical data and outputs the data. The image sensor 110 accumulates the amount of light input, and outputs an image captured by a lens based on the accumulated amount of light in accordance with a vertical synchronization signal. At this time, the image is acquired by the image sensor 110, which converts reflected light from the subject into an electrical signal. On the other hand, a color filter is required to obtain a color image using the image sensor 110, and for example, a CFA (Color Filter Array) filter can be used. The CFA has a structure in which only light that represents one color per pixel passes through, is regularly arranged, and has various forms depending on the arrangement structure.

[0393] The image signal processing unit 120 processes, for each frame, the image outputted through the image sensor 110. In this case, the image signal processing unit 120 is also called an ISP (Image Signal Processor).

[0394] In this case, the image signal processor 120 may include a lens shading compensation unit (not shown) which is a block for compensating for a lens shading phenomenon that occurs when the amount of light differs between the center and edge regions of an image, and which receives a lens shading setting value from the controller 190 (described later) to compensate for the colors of the center and edge regions of an image.

[0395] Further, the lens shading compensation unit may receive shading parameters differently set according to the type of illumination and process the lens shading of the image according to the received parameters. Thus, the lens shading compensation unit may perform lens shading processing by applying different degrees of shading according to the type of illumination. Meanwhile, the lens shading compensation unit may receive shading parameters differently set according to an automatic exposure weighting value applied to a specific region of the image in order to prevent a saturation phenomenon occurring in the image, and process the lens shading of the image according to the received parameters. More specifically, the lens shading compensation unit compensates for a change in brightness occurring in an edge region of the image signal by applying an automatic exposure weighting value to a central region of the image signal. That is, when saturation of the image signal occurs due to illumination, the light intensity decreases concentrically from the center to the periphery, so the lens shading compensation unit amplifies an edge signal of the image signal to compensate for the brightness of the center.

[0396] Meanwhile, the image signal processor 120 may measure the sharpness of an image acquired through the image sensor 110. That is, the image signal processor 120 may measure the sharpness of an image in order to check the focus accuracy of the image acquired through the image sensor 110. The sharpness may be measured for each image acquired depending on the position of the focus lens.

[0397] The display unit 130 displays the captured image under the control of the control unit 190, which will be described later, and displays a setting screen required for taking a photo and a screen for the user to select an operation. This may be provided to another mobile terminal or a portable terminal.

[0398] The first lens driver 140 may correspond to the above-mentioned first optical driver 1150 (see FIG. 4). That is, the first lens driver 140 may perform electromagnetic interactions between the third to fifth coils and the third to fifth magnets in response to a control signal received from the controller 190. In addition, OIS may be performed by such interactions.

[0399] The second lens driver 150 may correspond to the above-mentioned second optical driver 1250 (see FIG. 8). That is, the second lens driver 150 may perform electromagnetic interaction between the first and second coils and the first and second magnets in response to a control signal received from the controller 190. In addition, zoom or AF may be performed by such interaction.

[0400] For example, the focus lens can be moved in the optical axis direction.

[0401] The first position sensor unit 160 includes a plurality of Hall sensors of the first camera actuator described above, thereby detecting the position of the mover or the optical member. That is, the first position sensor unit 160 can detect the position of the first optical driving unit disposed on the mover. This is for controlling the position of the first mover or the optical member. The first position sensor unit 160 also provides position data for moving the mover or the optical member.

[0402] The second position sensor unit 170 includes a plurality of Hall sensors of the second camera actuator described above, thereby detecting the position of the lens assembly or the driving magnet or the lens unit 1220 (see FIG. 9). That is, the second position sensor unit 170 can detect the position of the second optical driving unit adjacent to the lens unit 1220. This is for controlling the position of the lens unit. Also, the second position sensor unit 170 provides position data for moving the lens unit.

[0403] The storage unit 180 stores data necessary for the operation of the camera device. In particular, information on the zoom position and focus position according to the distance to the subject may be stored in the storage unit 180. That is, the focus position may be the position of the focus lens for accurately focusing on the subject. The focus position may also vary according to the zoom position of the zoom lens and the distance to the subject. Therefore, the storage unit 180 stores data on the zoom position according to the distance and the focus position corresponding to the zoom position.

[0404] The control unit 190 controls the operation of the entire camera device. In particular, the control unit 190 can control the first position sensor unit 160 and the second position sensor unit 170 to provide an autofocus function. Furthermore, the control unit 190 can include a driver DR, which will be described later. Also, as described above, the driving unit can detect the position of the driving magnet from the Hall sensor and provide a current to the driving coil. That is, the driving unit in the camera device or the lens driving device can be a concept including the control unit 190, the first and second lens driving units.

[0405] The control unit 190 detects the position of the mover or optical member by the first position sensor unit 160. Preferably, the control unit 190 detects the current position of the mover or optical member by the first position sensor unit 160 in order to move the mover or optical member to a target position.

[0406] In addition, when the current position of the mover or optical member is detected by the first position sensor unit 160, the control unit 190 supplies a control signal to the first lens driving unit 140 to move the mover or optical member to a target position based on the current position of the mover or optical member.

[0407] Furthermore, the control unit 190 detects the position of the lens unit using the second position sensor unit 170. The control unit 190 detects the current position of the lens unit using the second position sensor unit 170 in order to move the lens unit to a target position.

[0408] In addition, when the current position of the lens unit is detected by the second position sensor unit 170, the control unit 190 can supply a control signal to the second lens driving unit 150 to move the lens unit to a target position based on the current position of the lens unit.

[0409] At this time, the control unit 190 may receive, as input, a differential signal of detection signals detected by the first position sensor unit 160 and the second position sensor unit 170 using the multiple sensor units that constitute each sensor unit.

[0410] In the present invention, each of the first position sensor section 160 and the second position sensor section 170 includes a plurality of sensor units (corresponding to the above-mentioned "Hall sensors"). The plurality of sensor units perform detection operations at their respective installation positions. That is, the plurality of sensor units can detect the position of the mover, the position of the lens section, and the like. In this case, in the present invention, the positions of the mover or the optical member and the lens section can each be detected using a differential signal of the detection signals acquired by the plurality of sensor units.

[0411] At this time, the control unit 190 receives the signals detected by the plurality of sensor units, and can detect the position of the mover, the optical member, the second lens assembly, or the driving magnet based on the corresponding differential signal.

[0412] However, in the case of the above structure, an amplifier and an analog-to-digital converter must be disposed in a given sensor unit, and the control unit 190 may be provided with a plurality of connection terminals connected to the analog-to-digital converter connected to the given sensor unit.

[0413] In the present invention, digital data for the differential signals is obtained at the front-end stage, so that the obtained digital data can be input to the control unit 190 .

[0414] In other words, in the present invention, digital data is acquired by the first position sensor unit 160 and the second position sensor unit 170, and only the acquired digital data can be input to the control unit 190. Hereinafter, the second position sensor unit 170, the second lens driving unit 150, and the control unit 190 (including the driver) will be described in detail.

[0415] The sensor units of the second position sensor unit 170 may have the same configuration and may be connected to the control unit 190. Although it may be applied to the first position sensor unit 160, since a plurality of Hall sensors are required to provide a particularly long moving distance (or long stroke), the following description may be applied to the second camera actuator that performs this. That is, the description will be given based on the sensor units (or Hall sensors) and control unit (or driver DR) for the second position sensor unit 170.

[0416] Referring to FIG. 20, each of the first and second position sensor portions 160 , 170 includes a plurality of sensor units 210 , an amplifier 220 , and an analog-to-digital converter 230 .

[0417] The plurality of sensor units 210 includes a sensor for detecting a position. Preferably, the plurality of sensor units 210 are a plurality of Hall sensors, and the Hall sensors may correspond to the Hall sensors described in the second camera actuator. Hereinafter, the Hall sensors may correspond to the first and second Hall sensors described above. That is, hereinafter, a description will be given of detecting the positions of the first and second lens assemblies or the first and second magnets from the Hall sensors of the second camera actuator, and adjusting the currents provided to the first and second coils accordingly.

[0418] The multiple Hall sensors may be located in at least one of the first subcoil and the second subcoil. For example, the multiple Hall sensors may be located in the first subcoil. Alternatively, the multiple Hall sensors may be located in the second subcoil. Alternatively, some of the multiple Hall sensors may be located in the first subcoil and the remaining part may be located in the second subcoil. For example, at least three or more Hall sensors may be located in various combinations in the first subcoil or the second subcoil, respectively. Furthermore, the location of three or more Hall sensors may be similarly applied to the second driving coil. That is, three or more Hall sensors may be located in various numbers in the third subcoil and the fourth subcoil, respectively.

[0419] For example, one Hall sensor may be located in a first subcoil, two Hall sensors may be located in a second subcoil, two Hall sensors may be located in a third subcoil, and one Hall sensor may be located in a fourth subcoil.

[0420] Furthermore, the number of the Hall sensors (or sensor units) may be three or more, and two Hall sensors connected in series may be connected in parallel, as will be described later.

[0421] Alternatively, the multiple sensor units 210 may include multiple inductive coils.

[0422] The multiple sensor units 210 are connected to each other between sensors for the same axial movement or axial tilt in each actuator, and the sensors may be connected to an amplifier (amp) 220. The connection structure of the multiple sensor units 210 will be described in more detail below.

[0423] In the present invention, a plurality of sensor units 210 can be connected to each other, and at least one terminal of the sensor unit, that is, an output terminal, can be connected to the amplifier 220. In the case of a plurality of sensor units, the outermost or outermost connected sensor unit 210 can be connected to the amplifier 220. As a result, a sum signal of detection signals detected by a given sensor unit can be input to the amplifier 220. The sensing range of the plurality of sensor units 210, which is expressed as the sum of the sensing ranges of the given sensor units, can be expanded as compared to a single sensor unit.

[0424] The amplifier 220 may include a non-inverting terminal (+) and an inverting terminal (-). The amplifier 220 differentially amplifies a signal input to the non-inverting terminal (+) and a signal input to the inverting terminal (-) and outputs the amplified signal to the analog-digital converter 230. In this specification, the analog-digital converter 230 is used interchangeably with "converter". That is, the output signal for the multiple sensor units 210 has a magnitude of mV or V, which may be a magnitude that does not match the ratio to the input range of the analog-digital converter 230. Therefore, the amplifier 220 differentially amplifies and outputs the signal input through the non-inverting terminal (+) and the inverting terminal (-) to match the input range of the analog-digital converter 230.

[0425] The analog-to-digital converter 230 receives an analog signal from the amplifier 220, and can convert the received analog signal into a digital signal and output the digital signal. Preferably, the analog-to-digital converter 230 receives an analog signal from the amplifier 220 and outputs the analog signal as a digital signal of multiple bits. In this case, the output signal of the analog-to-digital converter 230 can be expressed by values ​​of 0 and 1.

[0426] In this case, the sensor units 210 in the embodiment of the present invention may be configured with a plurality of Hall sensors. In the case where the sensor units 210 are configured with Hall sensors, the mutual connection relationship of the respective Hall sensors will be described below.

[0427] FIG. 21 is a diagram for explaining the connection relationships of a sensor unit according to an embodiment of the present invention, FIG. 22 is a diagram for explaining the connection relationships of a sensor unit according to another embodiment of the present invention, and FIG. 23 is a configuration diagram of a sensor unit, driver, drive coil, and drive magnet according to an embodiment.

[0428] 21, the lens driving device according to the embodiment may include N sensors (or Hall sensors or sensor units) that sense the magnetic field of one magnet (the first magnet or the second magnet) of the driving magnet. In this case, the driving unit (or driver) receives the outputs of the multiple sensors (N sensors) and can control the current applied to the first coil (or the second coil) accordingly.

[0429] In this specification, N may be a natural number equal to or greater than 3. Furthermore, depending on the embodiment, when N is an odd number, N sensors may be connected to have (N-1) / 2 series connections. Furthermore, when N is an even number, N sensors may be connected to have N / 2 series connections. In this specification, a case where N is 3 or 4 will be described as a reference. Furthermore, the sensor corresponds to the above-mentioned Hall sensor or sensor unit.

[0430] As shown, the first sensor HALL#1 and the second sensor HALL#2 may be connected in series with each other. Also, the third sensor HALL#3 and the fourth sensor HALL#4 may be connected in series with each other. The first sensor HALL#1 and the second sensor HALL#2 form a first group sensor 210GA. The first group sensor 210GA may be a "first group sensor unit" or a "first group Hall sensor". Also, the third sensor HALL#3 and the fourth sensor HALL#4 form a second group sensor 210GB. The second group sensor 210GB may be a "second group sensor unit" or a "second group Hall sensor".

[0431] The first sensor HALL#1 and the second sensor HALL#2 connected in series may be connected to the first amplifier 220A. Also, the third sensor HALL#3 and the fourth sensor HALL#4 connected in series may be connected to the second amplifier 220B. Also, the signals amplified by the first amplifier 220A and the second amplifier 220B may be provided to the selection unit MP. For example, the selection unit MP may be a multiplexer. For example, the selection unit MP may provide the signals output from the first group sensors and the second group sensors to the converter 230 through a filling unit (e.g., a capacitor). Each of the signals output from the first group sensors and the second group sensors may be converted into a digital signal through the converter 230. Also, the control unit 190 or the driver DR may receive the converted digital signal and detect the position of the driving magnet (e.g., the first magnet). Furthermore, the position of the lens unit (e.g., the first lens assembly or the second lens assembly) may be detected through the detected position of the driving magnet. In response to this, the control unit 190 can control the current applied to the drive coil according to the moving distance of the lens unit.

[0432] Referring to FIG. 22, as described above, the lens driving device according to the embodiment may include N sensors (or Hall sensors or sensor units) that sense the magnetic field of one magnet (the first magnet or the second magnet) of the driving magnet. In this case, the driving unit (or drive) receives the output of the multiple sensors (N sensors) and can control the current applied to the first coil (or the second coil) accordingly. Furthermore, all of the above contents can be applied in the same manner, except for the description below.

[0433] As shown, the first sensor HALL#1 and the second sensor HALL#2 may be connected in series with each other. Also, the third sensor HALL#3 and the fourth sensor HALL#4 may be connected in series with each other. The first sensor HALL#1 and the second sensor HALL#2 form a first group sensor 210GA. The first group sensor 210GA may be a "first group sensor unit" or a "first group Hall sensor". Also, the third sensor HALL#3 and the fourth sensor HALL#4 form a second group sensor 210GB. The second group sensor 210GB may be a "second group sensor unit" or a "second group Hall sensor".

[0434] The first sensor HALL#1 and the second sensor HALL#2 connected in series may be connected to the amplifier 220. Also, the third sensor HALL#3 and the fourth sensor HALL#4 connected in series may be connected to the amplifier 220. For example, the first group sensor 210GA and the second group sensor 210GB may be connected in parallel to the same amplifier. That is, an integrated output value (e.g., sum or average) of the first group sensor 210GA and the second group sensor 210GB may be provided to the amplifier 220. Also, the signal amplified by the amplifier may be provided to a selection unit, or may be provided to a converter 230 if there is no selection unit. Also, the signals output from the first group sensor and the second group sensor may be converted into digital signals through the converter 230. Also, the control unit 190 or the driver may receive the converted digital signals and detect the position of the driving magnet (e.g., the first magnet). Furthermore, the position of the lens unit (e.g., the first lens assembly or the second lens assembly) may be detected through the detected position of the driving magnet. In response to this, the control unit 190 can control the current applied to the drive coil according to the moving distance of the lens unit.

[0435] 23, in the camera actuator according to this embodiment, the N sensors described above correspond to a fourth Hall sensor unit 1253 that senses the magnetic field of the first optical driving magnet 1252. The fourth Hall sensor unit 1253 may include a first sensor 210A to a fourth sensor 210D as a plurality of Hall sensors (or position sensors). Furthermore, the Hall sensors in this specification are also referred to as "sensors" and "position sensors." Each Hall sensor may include a first detection signal output terminal, a second detection signal output terminal, a first power supply terminal, and a second power supply terminal.

[0436] A voltage signal (or a current signal) may be applied to the Hall sensor via the first power terminal. Also, a hole bias signal may be applied from a driver DR (or a driving unit or a control unit) via the second power terminal. The first detection signal output terminal and the second detection signal output terminal may correspond to output signals for magnetic forces detected by the Hall sensor. For example, the polarities may be different from each other.

[0437] The driving unit may also include a control unit including a driver DR. Thus, the driving unit can receive outputs of the first sensor 210A to the fourth sensor 210D and control the current applied to the first coil. Here, the received outputs of the first sensor 210A to the fourth sensor 210D may be digital signals output or converted by the converter 230 and may be signals corresponding to the position of the first magnet, which is a driving magnet.

[0438] Of the four sensors 210A to 210D, the third Hall sensor 210A and the fourth Hall sensor 210B may be connected in series, and the fifth Hall sensor 210C and the first Hall sensor 210D may be connected in series.

[0439] Furthermore, N sensors, i.e., four sensors, may be arranged in sequence along the optical axis direction. Also, the first power supply terminal of the third Hall sensor 210A and the first power supply terminal of the fourth Hall sensor 210B may form the same node or be connected in parallel to receive the input voltage (VAnalog). Also, the second power supply terminal of the third Hall sensor 210A and the second power supply terminal of the fourth Hall sensor 210B may form the same node or be connected in parallel to receive (or be able to receive) the bias power supply (CH1 Hall Bias). In the following, the description of the first and second Hall sensors may be similarly applied to the first embodiment of FIG. 20.

[0440] In addition, the first power supply terminal of the fifth Hall sensor 210C and the first power supply terminal of the first Hall sensor 210D may form the same node or be connected in parallel to receive an input voltage (VAnalog). In addition, the second power supply terminal of the fifth Hall sensor 210C and the second power supply terminal of the first Hall sensor 210D may form the same node or be connected in parallel to receive a bias power supply (CH2 Hall Bias).

[0441] Also, the first detection signal output terminal of the fifth Hall sensor 210C may be connected to an input channel of the driving unit or driver DR. For example, the driving unit or driver DR may include a first input channel IC1 and a second input channel IC2. Each of the first input channel IC1 and the second input channel IC2 may correspond to one terminal (either the non-inverting terminal or the inverting terminal) of the amplifier. Also, the fifth Hall sensor 210C and the first Hall sensor 210D may be connected to the second input channel IC2. Also, the first and second Hall sensors 210A and 210B may be connected to the first input channel IC1.

[0442] For example, the first detection signal output terminal of the fifth Hall sensor 210C may be connected to one terminal (either the non-inverting terminal or the inverting terminal) of the second amplifier 220B. Also, the second detection signal output terminal of the first Hall sensor 210D may be connected to the other terminal (the other of the non-inverting terminal or the inverting terminal) of the second amplifier 220B. That is, the second input signal of the second input channel IC2 may be input to the second amplifier 220B and amplified. The second input signal may be a signal output from the first detection signal output terminal of the fifth Hall sensor 210C and the second detection signal output terminal of the first Hall sensor 210D.

[0443] Furthermore, the signals amplified by the first amplifier 220A and the second amplifier 220B may be switched or sampled by a selection unit MP and provided to the converter 230.

[0444] Furthermore, the first input signal or the second input signal selected by the selection unit (e.g., a multiplexer) may be provided to the converter 230. This allows each of the signals amplified by the first amplifier 220A and the second amplifier 220B to be converted into a digital signal.

[0445] Therefore, the control unit or the driving unit can adjust the current applied to the driving magnet (e.g., the first coil) according to the first input signal or the second input signal converted by the converter 230. The control unit can detect the position of the first optical driving magnet 1252 from the converted digital signal, detect the position of the driving magnet or the lens unit (or lens assembly) to which the driving magnet is coupled, and provide the driving coil 1251 with a current for a desired movement. In this manner, since each amplifier is used, the noise reduction effect of the signal can be improved. Also, in this embodiment and the contents to be described later, a plurality of sensors corresponding to one driving magnet can be connected in series with each other between adjacent or non-adjacent Hall sensors. As an example, the connection between adjacent Hall sensors can facilitate the electrical design.

[0446] FIG. 24 is a perspective view of a mobile terminal to which the camera device according to the embodiment is applied.

[0447] Referring to FIG. 24, a mobile terminal 1500 of the embodiment may include a camera device 1000, a flash module 1530, and an autofocus device 1510 provided on the rear surface.

[0448] The camera device 1000 may include an image capture function and an autofocus function. For example, the camera device 1000 may include an image-based autofocus function.

[0449] The camera device 1000 processes image frames of still or moving images captured by an image sensor in a shooting mode or a video call mode.

[0450] The processed image frames may be displayed on a predetermined display unit or stored in a memory.A camera (not shown) may also be disposed on the front of the body of the mobile terminal.

[0451] For example, the camera device 1000 includes a first camera device 1000A and a second camera device 1000B, and the first camera device 1000A can realize an AF or zoom function as well as an OIS. The second camera device 1000B can achieve the AF, zoom and OIS functions. In this case, since the first camera device 1000A includes both the first camera actuator and the second camera actuator described above, the camera device can be easily miniaturized by changing the optical path.

[0452] The flash module 1530 may include a light-emitting element that emits light therein. The flash module 1530 may be activated by the camera of the mobile terminal or by user control.

[0453] The autofocus device 1510 may include any of a package of surface emitting laser elements as a light emitter.

[0454] The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 can be used mainly under conditions where the autofocus function using the image of the camera device 1000 deteriorates, such as close range of 10 m or less or in a dark environment.

[0455] The autofocus device 1510 may include a light emitting portion including a vertical cavity surface emitting laser (VCSEL) semiconductor device, and a light receiving portion such as a photodiode that converts optical energy into electrical energy.

[0456] FIG. 25 is a perspective view of a vehicle to which a camera device according to an embodiment is applied.

[0457] For example, FIG. 25 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera device 1000 according to the embodiment is applied.

[0458] 25, 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.

[0459] The camera 2000 may be a camera sensor to which the camera device 1000 according to the embodiment is applied. The vehicle 700 according to the embodiment can acquire image information by the camera sensor 2000 that captures a forward image or a surrounding image, and can determine a lane unidentified state using the image information and generate a virtual lane when the lane is unidentified.

[0460] For example, the camera sensor 2000 may capture an image in front of the vehicle 700 to obtain a front image, and a processor (not shown) may analyze objects included in the front image to obtain image information.

[0461] For example, when an object such as a lane, 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. In this case, the processor can obtain distance information from the object detected by the camera sensor 2000 to further supplement the image information.

[0462] The image information may be information about an object captured in the image. Such a camera sensor 2000 may include an image sensor and an image processing module.

[0463] The camera sensor 2000 can process still or moving images acquired by an image sensor (eg, CMOS or CCD).

[0464] The image processing module can process still images or video captured through the image sensor to extract necessary information and transmit the extracted information to a processor.

[0465] In this case, the camera sensor 2000 may include a stereo camera to improve the measurement accuracy of the object and further secure information such as the distance between the vehicle 700 and the object, but is not limited to this.

[0466] Although the above description has been centered on the embodiment, this is merely an example and does not limit the present invention. A person having ordinary knowledge in the field to which the present invention belongs will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the present embodiment. For example, each component specifically shown in the embodiment can be modified and implemented. In addition, the differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

Claims

1. Housing and a first lens assembly and a second lens assembly that move in an optical axis direction with respect to the housing; an optical drive unit including a first drive unit that moves the first lens assembly and a second drive unit that moves the second lens assembly; a first Hall sensor adjacent to the first actuator and a second Hall sensor adjacent to a second lens assembly; A camera device, wherein the first Hall sensor and the second Hall sensor at least partially do not overlap with each other in a direction perpendicular to the optical axis direction.

2. 2 . The camera device according to claim 1 , wherein a ratio of an area of ​​the first Hall sensor to an area of ​​the second Hall sensor horizontally overlapping the first Hall sensor is 1:0.5 or less.

3. the first driving unit includes a first coil and a first magnet facing the first coil, The camera device according to claim 1 , wherein the second driving section includes a second coil and a second magnet facing the second coil.

4. The camera device according to claim 3 , wherein when the first lens assembly and the second lens assembly move to a maximum in the optical axis direction, the first Hall sensor faces the first magnet and the second Hall sensor faces the second magnet.

5. 4. The camera device of claim 3, wherein when the first lens assembly and the second lens assembly move to their maximum in the optical axis direction, the minimum distance between the first Hall sensor and the second Hall sensor is greater than the maximum distance in the horizontal direction between the first coil and the second coil.

6. The camera device according to claim 3 , wherein the first coil and the second coil are disposed symmetrically with respect to an optical axis.

7. An image sensor is included. The camera apparatus of claim 1 , wherein the second lens assembly is positioned closer to the image sensor than the first lens assembly.

8. The camera assembly of claim 7 , wherein the second Hall sensor is positioned closer to the image sensor than the first Hall sensor.

9. the first coil includes a first sub-coil and a second sub-coil arranged to overlap each other in the optical axis direction, The camera device according to claim 3 , wherein the second coil includes a third sub-coil and a fourth sub-coil that are arranged so as to overlap each other in the optical axis direction.

10. the first sub-coil is disposed opposite to the third sub-coil with respect to an optical axis; The camera device according to claim 9 , wherein the second sub-coil is disposed opposite to the fourth sub-coil with respect to the optical axis.

11. the first Hall sensor is disposed within the first sub-coil; The camera apparatus of claim 10 , wherein the second Hall sensor is disposed within the fourth sub-coil.

12. The camera device according to claim 1 , wherein a distance traveled by the second lens assembly in the direction of the optical axis is greater than a distance traveled by the first lens assembly in the direction of the optical axis.

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