Camera actuator and camera device comprising the same

Abstract

An embodiment of the present invention discloses a camera device comprising: a housing; a lens assembly including at least one lens within the housing; and a driving unit for moving the lens assembly in the direction of an optical axis; wherein the driving unit comprises a driving magnet and a driving coil positioned facing each other, and a sensor unit for detecting a magnetic force from the driving magnet; and wherein the driving coil is positioned between the driving magnet and the sensor unit.

Description

Technology 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 captures subjects as photos or videos, and it is mounted on portable devices, drones, vehicles, etc. To improve image quality, a camera device or camera module may have an Image Stabilization (IS) function that corrects or prevents image shaking caused by user movement, an Auto Focusing (AF) function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens, and a zooming function that increases or decreases the magnification of distant subjects through a zoom lens for shooting.

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

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

[0005] Meanwhile, actuators for OIS may be placed around the lens. In this case, the actuators for OIS may include two axes perpendicular to the optical axis Z, namely, an actuator responsible for X-axis tilting and an actuator responsible for Y-axis tilting.

[0006] However, due to the needs of ultra-slim and ultra-compact camera devices, there are significant spatial constraints for arranging actuators for OIS, and it may be difficult to ensure sufficient space for the lens or the camera device itself, including the lens and image sensor, to tilt or move for OIS. Additionally, as the resolution of the camera increases, it is desirable to increase the size of the lens to increase the amount of light received, but there may be a limit to increasing the size of the lens due to the space occupied by the actuator for OIS.

[0007] In addition, when zooming, AF, and OIS functions are all included within a camera device, there is also a problem where the magnet for OIS and the magnet for AF or zoom are placed in close proximity to each other, causing magnetic field interference. The problem to be solved

[0008] The technical problem that the present invention aims to solve is to provide a camera actuator and a camera device applicable to ultra-slim, ultra-compact, and high-resolution cameras. means of solving the problem

[0009] A camera device according to an embodiment of the present invention comprises: a housing; a lens assembly including at least one lens within the housing; and a driving unit for moving the lens assembly in the direction of an optical axis; wherein the driving unit comprises a driving magnet and a driving coil positioned facing each other, and a sensor unit for detecting a magnetic force from the driving magnet; and wherein the driving coil is disposed between the driving magnet and the sensor unit.

[0010] The above driving magnet includes a first polarity portion and a second polarity portion having different polarities, and the sensor portion is positioned offset from a first virtual line, and the first virtual line may be a bisector of the driving magnet in the direction of the optical axis.

[0011] The above driving magnet may further include an air gap disposed between the first polarity portion and the second polarity portion.

[0012] The above driving coil may include a first region that overlaps with the driving magnet in a direction toward the opposing driving magnet, and a second region positioned above or below the driving magnet.

[0013] The sensor unit above can be placed in the second area.

[0014] The sensor part above may not overlap with the driving magnet in the direction from the driving magnet toward the driving coil.

[0015] It may further include a first side substrate and a second side substrate that are electrically connected to the above driving unit and spaced apart from each other on the opposing sides of the housing.

[0016] The sensor portion may be disposed on the outer surface of the first side substrate or on the outer surface of the second side substrate.

[0017] The above driving coil may be disposed on the inner surface of the first side substrate or on the inner surface of the second side substrate.

[0018] The sensor unit may further include a main substrate that includes a tunnel magnetoresistance (TMR) sensor, is positioned at the rear end of the lens assembly, and is provided with an image sensor.

[0019] A camera module according to an embodiment comprises: a housing; a lens assembly including at least one lens within the housing; and a driving unit for moving the lens assembly in the direction of an optical axis; wherein the driving unit comprises a driving magnet and a driving coil positioned facing each other, and a sensor unit for detecting a magnetic force from the driving magnet; and wherein the driving magnet, the driving coil, and the sensor unit are arranged in order of being further away from the optical axis and do not overlap in the direction of the optical axis. Effects of the invention

[0020] According to an embodiment of the present invention, a camera actuator and a camera device applicable to ultra-slim, ultra-compact, and high-resolution cameras can be provided. In particular, an actuator for OIS can be efficiently positioned without increasing the overall size of the camera device.

[0021] According to an embodiment of the present invention, tilting in the X-axis direction and tilting in the Y-axis direction do not cause magnetic field interference with each other, and tilting in the X-axis direction and tilting in the Y-axis direction can be implemented with a stable structure, and since it does not cause magnetic field interference with actuators for AF or zooming, precise OIS function can be realized.

[0022] According to an embodiment of the present invention, the size limitation of the lens is eliminated to secure sufficient light output, and low-power OIS can be implemented. Brief explanation of the drawing

[0023] FIG. 1 is a perspective view of a camera device according to an embodiment, and FIG. 2 is an exploded perspective view of a camera device according to an embodiment, and FIG. 3 is a cross-sectional view cut along AA' in FIG. 1, and FIG. 4 is an exploded perspective view of a first camera actuator according to an embodiment, and FIG. 5 is a perspective view of a first camera actuator according to an embodiment in which the shield can and substrate are removed, and FIG. 6 is a cross-sectional view cut along BB' in FIG. 5, and FIG. 7 is a cross-sectional view of FIG. 5 cut at CC', and FIG. 8 is a perspective view of a second camera actuator according to an embodiment, and FIG. 9 is an exploded perspective view of a second camera actuator according to an embodiment, and FIG. 10 is a cross-sectional view cut along DD' in FIG. 8, and FIGS. 11 and 12 are drawings illustrating each driving of a lens assembly according to an embodiment, and FIG. 13 is a diagram illustrating the operation of a second camera actuator according to an embodiment, and FIG. 14 is a perspective view of a first side substrate, a fourth coil, a fourth magnet, a first sensor, a first lens assembly, and a third lens group in a second camera actuator according to an embodiment, and FIG. 15 is a top view of a first side substrate, a fourth coil, a fourth magnet, a first sensor, a first lens assembly, and a third lens group in a second camera actuator according to an embodiment, and FIG. 16 is a side view of the fourth magnet, the fourth coil, and the first sensor in the second camera actuator according to an embodiment, and FIG. 17 is a diagram illustrating the positional relationship of the fourth magnet, the fourth coil, and the first sensor according to the driving of the second camera actuator according to an embodiment, and FIG. 18 is a diagram illustrating the driving of a first sensor that overlaps with a second region and a second direction in a second camera actuator according to an embodiment, and FIG. 19 is a diagram illustrating the driving of a first sensor that overlaps a first region and a second direction in a second camera actuator according to an embodiment, and FIG. 20 is a perspective view of a mobile terminal to which a camera device according to an embodiment is applied, and FIG. 21 is a perspective view of a vehicle equipped with a camera device according to an embodiment. Specific details for implementing the invention

[0024] The present invention is susceptible to various modifications and may have various embodiments, and specific embodiments are illustrated and described in the drawings. However, this does not specify the present invention.

[0025] It should be understood that the embodiments are not intended to be limited and include all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0026] Terms including ordinal numbers, such as second, first, etc., may be used to describe various components, but the components are not limited by the terms. The terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be named the first component, and similarly, the first component may be named the second component. The term "and / or" includes a combination of a plurality of related described items or any of a plurality of related described items.

[0027] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0028] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0029] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application.

[0030] Hereinafter, embodiments will be described in detail with reference to the attached drawings, provided that identical or corresponding components are given the same reference number regardless of the drawing symbols, and redundant descriptions thereof will be omitted.

[0031] FIG. 1 is a perspective view of a camera device according to an embodiment, FIG. 2 is an exploded perspective view of a camera device according to an embodiment, and FIG. 3 is a cross-sectional view cut along AA' in FIG. 1.

[0032] Referring to FIGS. 1 and 2, a camera device (1000) according to an embodiment may consist of a cover (CV), a first camera actuator (1100), a second camera actuator (1200), and a circuit board (1300). Here, the first camera actuator (1100) may be used as the first actuator, and the second camera actuator (1200) may be used as the second actuator.

[0033] The cover (CV) can cover the first camera actuator (1100) and the second camera actuator (1200). The coupling force between the first camera actuator (1100) and the second camera actuator (1200) can be improved by the cover (CV).

[0034] Furthermore, the cover (CV) may be made of a material that performs electromagnetic shielding. Accordingly, the first camera actuator (1100) and the second camera actuator (1200) inside the cover (CV) can be easily protected.

[0035] And the first camera actuator (1100) may be an OIS (Optical Image Stabilizer) actuator.

[0036] The first camera actuator (1100) may include a fixed focal length lens (fixed focal length les) disposed in a predetermined lens barrel (not shown). The fixed focal length lens (fixed focal length les) may also be referred to as a “single focal length lens” or a “single lens.”

[0037] The first camera actuator (1100) can change the path of light. In an embodiment, the first camera actuator (1100) can change the path of light vertically through an internal optical member (e.g., a mirror). With this configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be placed within the mobile terminal through the change of the path of light, so that magnification, autofocus (AF), and OIS functions can be performed.

[0038] The second camera actuator (1200) may be positioned at the rear end of the first camera actuator (1100). The second camera actuator (1200) may be coupled with the first camera actuator (1100). And the coupling between them may be achieved in various ways.

[0039] Additionally, the second camera actuator (1200) may be a zoom actuator or an AF (Auto Focus) actuator. For example, the second camera actuator (1200) may support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an auto focusing function or a zoom function.

[0040] The circuit board (1300) may be placed 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). Additionally, there may be multiple circuit boards (1300).

[0041] This circuit board (1300) is connected to the second housing of the second camera actuator (1200), and an image sensor may be provided. Furthermore, a base portion including a filter may be mounted on the circuit board (1300). This will be described later.

[0042] The camera device according to the embodiment may consist of a single or multiple camera devices. For example, the multiple camera devices may include a first camera device and a second camera device.

[0043] And the first camera device may include a single or multiple actuators. For example, the first camera device may include a first camera actuator (1100) and a second camera actuator (1200).

[0044] The second camera device may be disposed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving a lens portion. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, etc., and may be applied in various ways such as electrostatic, thermal, bimorphic, electrostatic force methods, etc., but is not limited thereto. In addition, in this specification, the camera actuator may be referred to as an actuator, etc. Furthermore, the camera device composed of a plurality of camera devices may be mounted in various electronic devices such as mobile terminals.

[0045] 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.

[0046] Light can be incident into the camera device through an aperture region located on the upper surface of the first camera actuator (1100). That is, light is incident into the interior of the first camera actuator (1100) along the optical axis direction (e.g., X-axis direction), and the light path can be changed in a vertical direction (e.g., Z-axis direction) through an optical member. Then, light passes through the second camera actuator (1200) and can be incident on an image sensor (IS) located at one end of the second camera actuator (1200) (PATH).

[0047] In this specification, the bottom surface refers to one side in the first direction. The first direction is the X-axis direction in the drawing and may be used interchangeably with the second axis direction, etc. The second direction is the Y-axis direction in the drawing and may be used interchangeably with the first axis direction, etc. The second direction is a direction perpendicular to the first direction. Additionally, the third direction is the Z-axis direction in the drawing and may be used interchangeably with the third axis direction, etc. It is a direction perpendicular to both the first direction and the second direction. 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 thereof will be provided later.

[0048] In addition, in the description of the second camera actuator (1200) below, the optical axis direction corresponds to the optical path and is the third direction (Z-axis direction), and the description below is based on this.

[0049] And by 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 while 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 focus, etc., in the expanded light path.

[0050] In addition, the camera device according to the embodiment can implement OIS by controlling the optical path through the first camera actuator, thereby minimizing the occurrence of decent or tilt phenomena and producing optimal optical characteristics.

[0051] Furthermore, the second camera actuator (1200) may include an optical system and a lens driving unit. For example, at least one of the first lens assembly, the second lens assembly, the third lens assembly, and a guide pin may be disposed in the second camera actuator (1200).

[0052] Additionally, the second camera actuator (1200) is equipped with a coil and a magnet to perform a high-magnification zooming function.

[0053] For example, the first lens assembly and the second lens assembly may be moving lenses that move via coils, magnets, and guide pins, and the third lens assembly may be a fixed lens, but is not limited thereto. For example, the third lens assembly may perform the function of a focuser that forms an image of light at a specific location, and the first lens assembly may perform the function of a variationator that re-forms the image formed by the third lens assembly (focuser) at a different location. Meanwhile, the first lens assembly may be in a state where the magnification changes significantly due to a large change in the distance to the subject or the image distance, and the first lens assembly (variator) may play an important role in the change of focal length or magnification of the optical system. On the other hand, the image formed by the first lens assembly (variator) may differ slightly depending on the location. Accordingly, the second lens assembly may perform a position compensation function for the image formed by the variationator. For example, the second lens assembly can perform the function of a compensator that accurately forms the image formed by the first lens assembly (which acts as a transducer) at the actual image sensor location. For example, the first lens assembly and the second lens assembly can be driven by electromagnetic force resulting from the interaction between a coil and a magnet. The above description may be applied to the lens assembly described below.

[0054] Meanwhile, according to an embodiment of the present invention, when an actuator for OIS (e.g., a first camera actuator) and an actuator for AF or Zoom (e.g., a second camera actuator) are arranged, magnetic field interference with the magnet for AF or Zoom can be prevented during OIS operation. Since the first driving magnet of the first camera actuator (1100) is arranged separately from the second camera actuator (1200), magnetic field interference between the first camera actuator (1100) and the second camera actuator (1200) can be prevented. In this specification, OIS may be used interchangeably with terms such as hand shake correction, optical image stabilization, optical image correction, and shake correction.

[0055] FIG. 4 is an exploded perspective view of a first camera actuator according to an embodiment.

[0056] Referring to FIG. 4, the first camera actuator (1100) according to the embodiment includes a first shield can (not shown), a first housing (1120), a mover (1130), a rotating part (1140), and a first driving part (1150).

[0057] The mover (1130) may include a holder (1131) and an optical member (1132) seated on the holder (1131). The rotating part (1140) includes a rotating plate (1141), a first magnetic body (1142) having a bonding force with the rotating plate (1141), and a second magnetic body (1143) located within the rotating plate (1141). Additionally, the first driving part (1150) includes a first driving magnet (1151), a first driving coil (1152), a Hall sensor part (1153), and a first substrate part (1154).

[0058] The first shield can (not shown) may be positioned at the outermost side of the first camera actuator (1100) to surround the rotating part (1140) and the first driving part (1150) described later.

[0059] This first shield can (not shown) can block or reduce electromagnetic waves generated from the outside. Accordingly, the occurrence of malfunction in the rotating part (1140) or the first driving part (1150) can be reduced.

[0060] The first housing (1120) may be located inside the first shield can (not shown). Additionally, the first housing (1120) may be located inside the first substrate part (1154) described later. The first housing (1120) may be joined or fitted together with the first shield can (not shown).

[0061] The first housing (1120) may be composed of a plurality of housing sides. It may include a first housing side (1121), a second housing side (1122), a third housing side (1123), and a fourth housing side (1124).

[0062] The first housing side (1121) and the second housing side (1122) may be arranged to face each other. Additionally, the third housing side (1123) and the fourth housing side (1124) may be arranged between the first housing side (1121) and the second housing side (1122).

[0063] 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). Additionally, the third housing side (1123) may include a bottom surface extending sideways from the first housing (1120).

[0064] And the first housing side (1121) may include a first housing hole (1121a). A first coil (1152a), which will be described later, may be located in the first housing hole (1121a).

[0065] Additionally, the second housing side (1122) may include a second housing hole (1122a). And a second coil (1152b), which will be described later, may be located in the second housing hole (1122a).

[0066] The first coil (1152a) and the second coil (1152b) can be electrically connected and coupled with the first substrate portion (1154). In an embodiment, the first coil (1152a) and the second coil (1152b) are electrically connected to the first substrate portion (1154) so ​​that current can flow. This current is an element of electromagnetic force that enables the first camera actuator to tilt the optical member with respect to the X-axis.

[0067] Additionally, the third housing side (1123) may include a third housing hole (1123a). A third coil (1152c), described later, may be located in the third housing hole (1123a). The third coil (1152c) may be coupled with the first substrate part (1154). The third coil (1152c) may be electrically connected to the first substrate part (1154) so ​​that current may flow. This current is an element of electromagnetic force that enables the first camera actuator to tilt the optical member with respect to the Y-axis.

[0068] The fourth housing side (1124) may include a housing groove (1124a). A first magnetic body (1142), described later, may be disposed in the area facing the housing groove (1124a). Accordingly, the first housing (1120) may be coupled with the rotating plate (1141) by magnetic force or the like.

[0069] Additionally, the housing groove (1124a) according to the embodiment may be located on the inner or outer surface of the fourth housing side (1124). Accordingly, the first magnetic body (1142) may also be positioned to correspond to the location of the housing groove (1124a).

[0070] Additionally, the first housing (1120) may include a receiving portion (1125) formed by the first housing side (1121) to the fourth housing side (1224). A mover (1130) may be located in the receiving portion (1125).

[0071] The mover (1130) includes a holder (1131) and an optical member (1132) that sits on the holder (1131).

[0072] The holder (1131) can 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.

[0073] A mounting groove in which a second magnetic body (1143) can be seated may be arranged on the outer surface of the fourth prism facing the fourth housing side (1124).

[0074] The optical member (1132) can be seated on the holder (1131). To this end, the holder (1131) may have a seating surface, and the seating surface may be formed by a receiving groove. The optical member (1132) may include a reflector disposed inside. However, it is not limited thereto. The optical member (1132) may reflect light reflected from the outside (e.g., an object) into the camera device. In other words, the optical member (1132) can improve the spatial limitations of the first camera actuator and the second camera actuator by changing the path of the reflected light. Thus, it should be understood that the camera device may provide a high range of magnification by extending the light path while minimizing thickness.

[0075] The rotating part (1140) includes a rotating plate (1141), a first magnetic body (1142) having a bonding force with the rotating plate (1141), and a second magnetic body (1143) located within the rotating plate (1141).

[0076] The rotating plate (1141) can be combined with the aforementioned mover (1130) and the first housing (1120). The rotating plate (1141) may include an additional magnetic body (not shown) located inside.

[0077] Additionally, the rotating plate (1141) may be positioned adjacent to the optical axis. Thus, the actuator according to the embodiment can easily change the optical path according to the first and second axis tilts described later.

[0078] The rotating plate (1141) may include a first protrusion spaced apart in a first direction (X-axis direction) and a second protrusion spaced apart in a second direction (Y-axis direction). Additionally, the first protrusion and the second protrusion may protrude in opposite directions to each other. A detailed explanation thereof will be provided later.

[0079] Additionally, the first magnetic body (1142) includes a plurality of yokes, and the plurality of yokes may be positioned facing each other with respect to the rotating plate (1141). In an embodiment, the first magnetic body (1142) may be composed of a plurality of facing yokes. And the rotating plate (1141) may be positioned between the plurality of yokes.

[0080] And the first magnetic body (1142) may be located within the first housing (1120) as described above. Additionally, as described above, the first magnetic body (1142) may be placed on the inner or outer surface of the fourth housing side (1124). For example, the first magnetic body (1142) may be placed in a groove formed on the outer surface of the fourth housing side (1124). Alternatively, the first magnetic body (1142) may be placed in the housing groove (1124a) described above.

[0081] And the second magnetic body (1143) can be located on the outer surface of the mover (1130), particularly the holder (1131). With this configuration, the rotating plate (1141) can be easily coupled to the first housing (1120) and the mover (1130) by the coupling force due to the magnetic force between the second magnetic body (1143) and the first magnetic body (1142) inside. In the present invention, the positions of the first magnetic body (1142) and the second magnetic body (1143) can be moved relative to each other.

[0082] The first driving unit (1150) includes a first driving magnet (1151), a first driving coil (1152), a Hall sensor unit (1153), and a first substrate unit (1154).

[0083] The first driving magnet (1151) may include a plurality of magnets. In an embodiment, the first driving magnet (1151) may include a first magnet (1151a), a second magnet (1151b), and a third magnet (1151c). Here, the first magnet (1151a), the second magnet (1151b), and the third magnet (1151c) respectively refer to the first magnet, the second magnet, and the third magnet of the first camera actuator.

[0084] The first magnet (1151a), the second magnet (1151b), and the third magnet (1151c) may each be located on the outer surface of the holder (1131). Additionally, the first magnet (1151a) and the second magnet (1151b) may be positioned to face each other. Furthermore, the third magnet (1151c) may be located on the bottom surface of the outer surface of the holder (1131). A detailed explanation thereof will be provided later.

[0085] The first driving coil (1152) may include a plurality of coils. In an embodiment, the first driving coil (1152) may include a first coil (1152a), a second coil (1152b), and a third coil (1152c). Here, the first coil (1152a), the second coil (1152b), and the third coil (1152c) respectively refer to the first coil, the second coil, and the third coil of the first camera actuator.

[0086] The first coil (1152a) may be positioned opposite the first magnet (1151a). Accordingly, the first coil (1152a) may be positioned in the first housing hole (1121a) of the first housing side (1121) as described above.

[0087] Additionally, the second coil (1152b) may be positioned opposite the second magnet (1151b). Accordingly, the second coil (1152b) may be positioned in the second housing hole (1122a) of the second housing side (1122) as described above.

[0088] The first coil (1152a) may be positioned to face the second coil (1152b). That is, the first coil (1152a) may be positioned symmetrically with respect to the second coil (1152b) with respect to the first direction (X-axis direction). This may be applied equally to the first magnet (1151a) and the second magnet (1151b). That is, the first magnet (1151a) and the second magnet (1151b) may be positioned symmetrically with respect to the first direction (X-axis direction). Additionally, the first coil (1152a), the second coil (1152b), the first magnet (1151a), and the second magnet (1151b) may be arranged to overlap at least partially in the second direction (Y-axis direction). With this configuration, X-axis tilting can be accurately achieved without tilting to one side by means of the electromagnetic force between the first coil (1152a) and the first magnet (1151a) and the electromagnetic force between the second coil (1152b) and the second magnet (1151b).

[0089] The third coil (1152c) may be positioned opposite the third magnet (1151c). Accordingly, the third coil (1152c) may be positioned in the third housing hole (1123a) of the third housing side (1123) as described above. By generating an electromagnetic force with the third magnet (1151c), the third coil (1152c) can perform Y-axis tilting of the mover (1130) and the rotating part (1140) relative to the first housing (1120).

[0090] Here, X-axis tilting means tilting with respect to the X-axis, and Y-axis tilting means tilting with respect to the Y-axis.

[0091] The Hall sensor unit (1153) may include a plurality of Hall sensors. The Hall sensors correspond to the 'sensor unit' described later and are used in combination with it. In an embodiment, the Hall sensor unit (1153) may include a first Hall sensor (1153a), a second Hall sensor (1153b), and a third Hall sensor (1153c). The Hall sensor unit (11253) may be located inside the first driving coil (1152).

[0092] In an embodiment, the first Hall sensor (1153a) may be located inside the first coil (1152a). The second Hall sensor (1153b) may be symmetrically positioned with respect to the first Hall sensor (1153a) in the first direction (X-axis direction) and the third direction (Z-axis direction). Additionally, the second Hall sensor (1153b) may be located inside the second coil (1152b).

[0093] The first Hall sensor (1153a) can detect a change in magnetic flux inside the first coil (1152a). And the second Hall sensor (1153b) can detect a change in magnetic flux in the second coil (1152b). Thus, position sensing between the first and second magnets (1151a, 1251b) and the first and second Hall sensors (1153a, 1153b) can be performed. For example, the first camera actuator according to the embodiment can control X-axis tilt through the first and second Hall sensors (1153a, 1153b).

[0094] Additionally, the third Hall sensor (1153c) may be located inside the third coil (1152c). The third Hall sensor (1153c) can detect changes in magnetic flux inside the third coil (1152c). Thus, position sensing between the third magnet (1151c) and the third Hall sensor (1153bc) can be performed. The first camera actuator according to the embodiment can control the Y-axis tilt through this.

[0095] The first substrate portion (1154) may be located on the outside of the first driving portion (1150). The first substrate portion (1154) may be electrically connected to the first driving coil (1152) and the Hall sensor portion (1153). For example, the first substrate portion (1154) may be coupled to the first driving coil (1152) and the Hall sensor portion (1153) via SMT. However, it is not limited to this method.

[0096] The first substrate portion (1154) is positioned between the first shield can (not shown) and the first housing (1120) so as to be coupled with the first shield can and the first housing (1120). The coupling method can be varied as described above. Through the coupling, the first driving coil (1152) and the Hall sensor portion (1153) can be positioned within the outer surface of the first housing (1120).

[0097] This first substrate portion (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), or a rigid-flexible printed circuit board (RigidFlexible PCB). However, it is not limited to these types.

[0098] The specific details regarding the relationship between this Hall sensor part (1153) and the first substrate part (1154) described later will be described later.

[0099] FIG. 5 is a perspective view of a first camera actuator according to an embodiment in which the shield can and substrate are removed, FIG. 6 is a cross-sectional view cut at BB' in FIG. 5, and FIG. 7 is a cross-sectional view cut at CC' in FIG. 5.

[0100] Referring to FIGS. 5 to 7, the first coil (1152a) may be located on the first housing side (1121).

[0101] And the first coil (1152a) and the first magnet (1151a) may be positioned facing each other or opposite each other. The first magnet (1151a) may overlap with the first coil (1152a) in at least a portion of the second direction (Y-axis direction).

[0102] Additionally, it may be located on the second housing side (1122) of the second coil (1152b). Accordingly, the second coil (1152b) and the second magnet (1151b) may be positioned facing each other or opposite each other. The second magnet (1151b) may overlap at least partially with the second coil (1152b) in the second direction (Y-axis direction).

[0103] Additionally, the first coil (1152a) and the second coil (1152b) may overlap in the second direction (Y-axis direction), and the first magnet (1151a) and the second magnet (1151b) may overlap in the second direction (Y-axis direction). With this configuration, the electromagnetic force applied to the outer surface of the holder (the outer surface of the first holder and the outer surface of the second holder) is positioned on an axis parallel to the second direction (Y-axis direction), so that X-axis tilt can be performed accurately and precisely.

[0104] Additionally, a first receiving groove (not shown) may be located on the outer surface of the fourth holder. A first protrusion (PR1a, PR1b) may be disposed in the first receiving groove. Accordingly, when performing an X-axis tilt, the first protrusion (PR1a, PR1b) may serve as the reference axis (or rotation axis) of the tilt. Accordingly, the rotation plate (1141) and the mover (1130) may move left and right.

[0105] As described above, the second protrusion (PR2) can be seated in the groove on the inner surface of the fourth housing side (1124). And when performing a Y-axis tilt, the rotation plate and the mover can rotate with the second protrusion (PR2) as the reference axis for the Y-axis tilt.

[0106] According to the embodiment, OIS can be performed by the first protrusion and the second protrusion.

[0107] Referring to FIG. 6, Y-axis tilt can be performed. That is, OIS can be implemented by rotating in the first direction (X-axis direction).

[0108] In an example, a third magnet (1151c) positioned at the bottom of the holder (1131) can form an electromagnetic force with the third coil (1152c) to tilt or rotate the mover (1130) in the first direction (X-axis direction).

[0109] Specifically, the rotating plate (1141) can be coupled to the first housing (1120) and the mover (1130) by the first magnetic body (1142) in the first housing (1120) and the second magnetic body (1143) in the mover (1130). And the first protrusion (PR1) can be spaced apart in the first direction (X-axis direction) and supported by the first housing (1120).

[0110] And the rotating plate (1141) can rotate or tilt the second protrusion (PR2) protruding toward the mover (1130) with the reference axis (or rotation axis). That is, the rotating plate (1141) can perform Y-axis tilt with the second protrusion (PR2) as the reference axis.

[0111] For example, OIS can be implemented by rotating the mover (1130) at a first angle (θ1) in the X-axis direction (X1->X1a, X1b) by the first electromagnetic force (F1A, F1B) between the third magnet (1151c) placed in the third mounting groove and the third coil (1152c) placed at the bottom of the first substrate part. The first angle (θ1) may be ±1° to ±3°. However, it is not limited thereto.

[0112] Referring to Fig. 7, X-axis tilt can be performed. That is, OIS can be implemented by rotating in the second direction (Y-axis direction).

[0113] OIS can be implemented by tilting or rotating (or tilting the X-axis) the mover (1130) in the Y-axis direction.

[0114] In an embodiment, the first magnet (1151a) and the second magnet (1151b) placed in the holder (1131) each form an electromagnetic force with the first coil (1152a) and the second coil (1152b) to tilt or rotate the rotation plate (1141) and the mover (1130) in the second direction (Y-axis direction).

[0115] The rotating plate (1141) can rotate or tilt (X-axis tilt) the first protrusion (PR1) in a second direction with the reference axis (or rotation axis).

[0116] For example, OIS can be implemented by rotating the mover (1130) by a second angle (θ2) in the Y-axis direction (Y1->Y1a, Y1b) by a second electromagnetic force (F2A, F2B) between the first and second magnets (1151a, 1151b) disposed in the first mounting groove and the first and second coils (1152a, 1152b) disposed on the opposing side of the first substrate part. The second angle (θ2) may be ±1° to ±3°. However, it is not limited thereto.

[0117] In this way, the first actuator according to the embodiment controls the rotation of the rotating plate (1141) and the mover (1130) in a first direction (X-axis direction) or a second direction (Y-axis direction) by means of the electromagnetic force between the first driving magnet in the holder and the first driving coil disposed in the housing, thereby minimizing the occurrence of decentration or tilt phenomena when implementing OIS and providing optimal optical characteristics. In addition, as described above, 'Y-axis tilt' corresponds to rotation or tilt in the first direction (X-axis direction), and 'X-axis tilt' corresponds to rotation or tilt in the second direction (Y-axis direction).

[0118] FIG. 8 is a perspective view of a second camera actuator according to an embodiment, FIG. 9 is an exploded perspective view of a second camera actuator according to an embodiment, FIG. 10 is a cross-sectional view cut along DD' in FIG. 8, FIG. 11 and FIG. 12 are drawings explaining each actuation of a lens assembly according to an embodiment, and FIG. 13 is a drawing explaining the actuation of a second camera actuator according to an embodiment.

[0119] Referring to FIGS. 8 to 10, a second camera actuator (1200) according to an embodiment may include a lens portion (1220), a second housing (1230), a second driving portion (1250), a base portion (1260), and a second substrate portion (1270). Furthermore, the second camera actuator (1200) may further include a second shield can (not shown), an elastic portion (not shown), and a bonding member (not shown).

[0120] A second shield can (not shown) may be positioned in a region (e.g., the outermost) of the second camera actuator (1200) to enclose the components described later (lens part (1220), second housing (1230), second driving part (1250), base part (1260), second substrate part (1270) and image sensor (IS)).

[0121] This second shield can (not shown) can block or reduce electromagnetic waves generated from the outside. Accordingly, the occurrence of malfunction in the second drive unit (1250) can be reduced.

[0122] The lens portion (1220) may be located within a second shield can (not shown). The lens portion (1220) may move in a third direction (Z-axis direction). Accordingly, the aforementioned AF or zooming function may be performed.

[0123] Additionally, the lens portion (1220) may be located within the second housing (1230). Accordingly, at least a portion of the lens portion (1220) may move along the optical axis direction or the third direction (Z-axis direction) within the second housing (1230).

[0124] Specifically, the lens portion (1220) may include a lens group (1221) and a moving assembly (1222).

[0125] First, the lens group (1221) may include at least one lens. Additionally, the lens group (1221) may be multiple, but the following description is based on one.

[0126] The lens group (1221) is coupled with the moving assembly (1222) and can move in a third direction (Z-axis direction) by the electromagnetic force generated from the fourth magnet (1251a) and the fifth magnet (1251a) coupled to the moving assembly (1222). Here, the fourth magnet (1251a) refers to the first magnet (1251a) in the second camera actuator (1200) and is used interchangeably with it, and the fifth magnet (1251b) refers to the second magnet (1251b) in the second camera actuator (1200) and is used interchangeably with it. Accordingly, the fourth magnet (1251a) is described as the first magnet (1251a) or the first magnet (1251a) of the second camera actuator (1200). Additionally, the fifth magnet (1251a) is described below as the second magnet (1251b) or the second magnet (1251b) of the second camera actuator (1200).

[0127] In an 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 sequentially along the optical axis direction.

[0128] The first lens group (1221a) can be fixed in conjunction with the second-1 housing. In other words, the first lens group (1221a) may not move along the optical axis direction.

[0129] The second lens group (1221b) can be moved in a third direction or an optical axis direction by combining with the second lens assembly (1222b). Magnification adjustment can be performed by moving the second lens group (1221b).

[0130] The third lens group (1221c) can be moved in a third direction or an optical axis direction in conjunction with the first lens assembly (1222a). Focus adjustment can be performed by moving the third lens group (1221c).

[0131] However, the number of such lens groups is not limited, and a fourth lens group, etc., may be further arranged at the rear end of the third lens group (1221c).

[0132] And the moving assembly (1222) may include an opening area that encloses the lens group (1221). This moving assembly (1222) is used in combination with the lens assembly. And the moving assembly (1222) may be combined with the lens group (1221) by various methods. Additionally, the moving assembly (1222) may include a groove on its side and may be combined with the first magnet (1251a) and the second magnet (1251b) through the groove. A bonding member, etc., may be applied to the groove.

[0133] Additionally, the moving assembly (1222) may be coupled with an elastic member (not shown) at the top and rear ends. Accordingly, the moving assembly (1222) may be supported by the elastic member (not shown) while moving in a third direction (Z-axis direction). That is, the position of the moving assembly (1222) may be maintained while being maintained in the third direction (Z-axis direction). The elastic member (not shown) may be made of a leaf spring. However, it is not limited to this type.

[0134] The moving assembly (1222) is located within the second housing (1230) and may include a first lens assembly (1222a) and a second lens assembly (1222b).

[0135] The area where the third lens group (1221c) is seated in the moving assembly (1222) may be located at the rear end of the second lens assembly (1221b). In other words, the area where the third lens group (1221c) is seated in the first lens assembly (1222a) may be located between the area where the second lens group (1221b) is seated in the second lens assembly (1222b) and the image sensor.

[0136] The first lens assembly (1222a) and the second lens assembly (1222b) may each include a first guide portion (G1) and a second guide portion (G2).

[0137] The first guide portion (G1) of the first lens assembly (1222a) and the second guide portion (G2) of the second lens assembly (1222b) may be positioned correspondingly to each other. For example, the first guide portion (G1) and the second guide portion (G2) may be positioned symmetrically with respect to the third direction.

[0138] The first guide portion (G1) and the second guide portion (G2) may include at least one groove or recess. A first ball (B1) or a second ball (B2) may be seated in the groove or recess. Accordingly, the first ball (B1) or the second ball (B2) may move in a third direction (Z-axis direction) along a rail formed on the inner side of the first side (1232a) of the second housing (1230) or a rail formed on the inner side of the second side (1232b) of the second housing (1230). Accordingly, the first lens assembly (1222a) and the second lens assembly (1222b) may move in a third direction (Z-axis direction). That is, the second camera actuator (1200) according to the embodiment can perform zooming and auto-focusing functions. For example, in the second camera actuator, the lens group can be changed from telephoto to wide angle.

[0139] And a second driving magnet, which is a driving magnet of a second camera actuator, can be mounted on the outer surface of the first lens assembly (1222a) and the second lens assembly (1222b). For example, a first magnet (1251a) can be mounted on the outer surface of the first lens assembly (1222a). A second magnet (1251b) can be mounted on the outer surface of the second lens assembly (1222b).

[0140] The second housing (1230) may be positioned between the lens portion (1220) and the second shield can (not shown). The second housing (1230) may be positioned to surround the lens portion (1220).

[0141] The second housing (1230) may include a second-1 housing (1231) and a second-2 housing (1232). The second-1 housing (1231) may be coupled with the first lens group (1221a) and may also be coupled with the first camera actuator described above. The second-1 housing (1231) may be located in front of the second-2 housing (1232).

[0142] And the second-2 housing (1232) can be located at the rear end of the second-1 housing (1231). A lens part (1220) can be seated inside the second-2 housing (1232).

[0143] A second housing (1230) (or a second-2 housing (1232)) may have a hole formed on its side. A fourth coil (1252a) and a fifth coil (1252b) may be disposed in the hole. The hole may be positioned to correspond to a groove in the moving assembly (1222) described above. First coil (1252a) Second coil (1252b)

[0144] Here, the fourth coil (1252a) refers to the first coil (1252b) in the second camera actuator (1200) and is used interchangeably with it, and the fifth coil (1252b) refers to the second coil (1252b) in the second camera actuator (1200) and is used interchangeably with it. Accordingly, it is described as the first coil (1252a) or the first coil (1252a) of the second camera actuator (1200). Also, it is described below as the second coil (1252b) or the second coil (1252b) of the second camera actuator (1200). In an embodiment, the second housing (1230) may include a first side (1232a) and a second side (1232b). The first side (1232a) and the second side (1232b) may be positioned corresponding to each other. For example, the first side (1232a) and the second side (1232b) may be arranged symmetrically with respect to the third direction (Z-axis direction). A second driving coil (1252) may be located on the first side (1232a) and the second side (1232b). Additionally, a second substrate portion (1270) may be placed on the outer surface of the first side (1232a) and the second side (1232b). In other words, a first side substrate (1271) may be located on the outer surface of the first side (1232a), and a second side substrate (1272) may be located on the outer surface of the second side (1232b).

[0145] The first magnet (1251a) of the second camera actuator (1200) may be positioned facing the first coil (1252a) of the second camera actuator (1200). Additionally, the second magnet (1251b) of the second camera actuator (1200) may be positioned facing the second coil (1252b) of the second camera actuator (1200).

[0146] The elastic member (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 the upper surface of the moving assembly (1222). The second elastic member (not shown) may be coupled to the lower surface of the moving assembly (1222). Additionally, the first elastic member (not shown) and the second elastic member (not shown) may be formed as plate springs as described above. Furthermore, the first elastic member (not shown) and the second elastic member (not shown) may provide elasticity for the movement of the moving assembly (1222).

[0147] The second driving unit (1250) can provide a driving force to move the lens unit (1220) along a third direction (Z-axis direction). This second driving unit (1250) may include a second driving coil (1252) and a second driving magnet (1251). Additionally, the second driving unit (1250) may include a sensor unit (1253a, 1253b). For example, the sensor unit may include a first sensor (1253a) and a second sensor (1253b). In an embodiment, the first sensor (1253a) and the second sensor (1253b) may be tunnel magnetic resistance or TMR (Tunnel Magnetic Resistance) sensors.

[0148] The lens portion (1220) can move in a third direction (Z-axis direction) by the electromagnetic force formed between the second driving coil (1252) and the second driving magnet (1251).

[0149] The second driving coil (1252) may include a first coil (1252a) and a second coil (1252b). The first coil (1252a) and the second coil (1252b) may be placed within a hole formed on the side of the second housing (1230). The first coil (1252a) and the second coil (1252b) may be electrically connected to the second substrate (1270). Accordingly, the first coil (1252a) of the second camera actuator (1200) and the second coil (1252b) of the second camera actuator (1200) may receive current, etc., through the second substrate (1270).

[0150] The second driving magnet (1251) may include the first magnet (1251a) of the second camera actuator (1200) and the second magnet (1251b) of the second camera actuator (1200). The first magnet (1251a) and the second magnet (1251b) may be placed in the aforementioned groove of the moving assembly (1222) and may be positioned to correspond to the first coil (1252a) and the second coil (1252b).

[0151] Thus, the first magnet (1251a) and the second magnet (1251b) can be symmetrically arranged with respect to the third direction (Z-axis direction), and the first coil (1252a) and the second coil (1252b) can also be symmetrically arranged with respect to the third direction (Z-axis direction). With this configuration, the second camera actuator (1200) can be balanced without the weight tilting to one side with respect to the third direction (Z-axis direction), which is the direction of movement of the first lens assembly (1222a) and the second lens assembly (1222b). Thus, movement in the third direction (Z-axis direction) can be performed accurately.

[0152] The base portion (1260) may be positioned between the lens portion (1220) and the image sensor (IS). Components such as filters may be fixed to the base portion (1260). Additionally, the base portion (1260) may be arranged to surround the image sensor (IS). With this configuration, the image sensor (IS) is free from foreign substances, thereby improving the reliability of the device.

[0153] Additionally, the second camera actuator (1200) may be a zoom actuator or an AF (Auto Focus) actuator. For example, the second camera actuator may support one or more lenses and move the lenses according to a control signal from a predetermined control unit to perform an autofocusing function or a zoom function.

[0154] And the second camera actuator may be a fixed zoom or a continuous zoom. For example, the second camera actuator may provide movement of the lens group (1221).

[0155] In addition, the second camera actuator may be composed of a plurality of lens assemblies. For example, in addition to the first lens assembly (1222a) and the second lens assembly (1222b), at least one of a third lens assembly (not shown) and a guide pin (not shown) may be disposed in the second camera actuator. The above description may apply to this. Accordingly, the second camera actuator can perform a high-magnification zooming function through a driving unit. For example, the first lens assembly (1222a) and the second lens assembly (1222b) may be moving lenses that move through the driving unit 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) can perform the function of a focuser that forms an image of light at a specific location, and the first lens assembly can perform the function of a variationr that re-forms the image formed by the third lens assembly (not shown), which acts as the focuser, at a different location. Meanwhile, the first lens assembly may be in a state where the magnification change is large because the distance to the subject or the image distance has changed significantly, and the first lens assembly, which acts as the variationr, can play an important role in the change of focal length or magnification of the optical system. Meanwhile, the image formed by the first lens assembly, which acts as the variationr, may differ slightly depending on the location. Accordingly, the second lens assembly can perform a position compensation function for the image formed by the variationr. For example, the second lens assembly can perform the function of a compensator that accurately forms the image formed by the first lens assembly (1222a), which acts as the variationr, at the actual image sensor location. However, the configuration of the present embodiment will be described based on the drawings below.

[0156] The image sensor (IS) may be located inside or outside the second camera actuator. In an embodiment, as illustrated, the image sensor (IS) may be located inside the second camera actuator. The image sensor (IS) may receive light and convert the received light into an electrical signal. Additionally, the image sensor (IS) may be composed of a plurality of pixels in an array form. Furthermore, the image sensor (IS) may be located on the optical axis.

[0157] The second substrate portion (1270) may come into contact with the side of the second housing. For example, the second substrate portion (1270) is located on the outer surface (first side) of the first side and the outer surface (second side) of the second side of the second housing, particularly the second-2 housing, and may come into contact with the first side and the second side.

[0158] This second substrate portion (1270) may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), or a rigid-flexible printed circuit board (RigidFlexible PCB). However, it is not limited to these types.

[0159] The second substrate portion (1270) may include a first side substrate (1271), a second side substrate (1272), and a connecting substrate (1273).

[0160] The first side substrate (1271) may be positioned to correspond to the first side (1232a). The second side substrate (1272) may be positioned opposite to the first side substrate (1271). For example, the first side substrate (1271) and the second side substrate (1272) may be arranged symmetrically with respect to the third direction (Z-axis direction).

[0161] A connecting substrate (1273) may be positioned between a first side substrate (1271) and a second side substrate (1272). One end of the connecting substrate (1273) may be connected in contact with the first side substrate (1271), and the other end may be connected in contact with the second side substrate (1272). A detailed explanation thereof will be provided later.

[0162] Referring to FIGS. 11 and 12, in a camera device according to an embodiment, the first magnet (1251a) of the second camera actuator (1200) may be provided in the first lens assembly (1222a), for example, by a vertical magnetization method. For example, in an embodiment, the N pole and the S pole of the first magnet (1251a) may both be positioned to face the first coil (1252a). Accordingly, the N pole and the S pole of the first magnet (1251a) may be positioned to correspond to the area where current flows in the X-axis direction or the opposite direction in the first coil (1252a).

[0163] In the embodiment, when a magnetic force (DM2) is applied in a second direction (Y-axis direction) from the N pole of the first magnet (1251a) and a current (DE2) flows in a first direction (X-axis direction) from the first coil (1252a) corresponding to the N pole, an electromagnetic force (DEM2) can be applied in a third direction (Z-axis direction) according to the interaction of electromagnetic forces (e.g., Fleming's left-hand rule).

[0164] In addition, in the embodiment, when a magnetic force is applied in the opposite direction to the second direction (Y-axis direction) from the S pole of the first magnet (1251a) and a current (DE2) flows in the opposite direction to the first direction (X-axis direction) from the first coil (1252a) corresponding to the S pole, an electromagnetic force (DEM2) may act in the Z-axis direction according to the interaction of the electromagnetic forces.

[0165] At this time, since the first coil (1252a) is fixed to the side of the housing, the first lens assembly (1222a) with the first magnet (1251a) can move along the rail located on the inner side of the second housing through the first ball (B1) in a direction parallel to the z-axis (both directions) by the electromagnetic force (DEM2) according to the direction of the current. For example, the first lens assembly (1222a) with the first magnet (1251a) can move in the opposite direction to the third direction (Z-axis direction) by the electromagnetic force (DEM2). At this time, the electromagnetic force (DEM2) can be controlled in proportion to the current (DE2) applied to the first coil (1252a).

[0166] Likewise, in the camera device according to the embodiment, an electromagnetic force (DEM1) is generated between the second magnet (1251b) and the second coil part (1251bb), so that the second lens assembly (1222b) can move along a rail located on the inner side of the housing through the second ball (B2) horizontally to the optical axis, that is, in the third direction (Z-axis direction) or in the direction opposite to the third direction.

[0167] Specifically, in the camera device according to the embodiment, the second magnet (1251b) may be provided in the second lens assembly (1222b) by, for example, a vertical magnetization method. For example, in the embodiment, the N pole and the S pole of the second magnet (1251b) may both be positioned to face the second coil (1252b). Accordingly, the N pole and the S pole of the second magnet (1251b) may be positioned to correspond to the region where current flows in the X-axis direction or the opposite direction in the second coil (1252b).

[0168] In the embodiment, when a magnetic force is applied in the opposite direction to the second direction (Y-axis direction) from the N pole of the second magnet (1251b) and a current (DE1) flows in the opposite direction to the first direction (X-axis direction) from the second coil (1252b) corresponding to the N pole, an electromagnetic force (DEM1) can act in the third direction (Z-axis direction) according to the interaction of electromagnetic forces (e.g., Fleming's left-hand rule).

[0169] In addition, in the embodiment, when a magnetic force is applied in the second direction (Y-axis direction) from the S pole of the second magnet (1251b) and a current (DE1) flows in the first direction (X-axis direction) from the second coil (1252b) corresponding to the S pole, an electromagnetic force (DEM1) may act in the Z-axis direction according to the interaction of the electromagnetic forces.

[0170] At this time, since the second coil (1252b) is fixed to the side of the housing, the second lens assembly (1222b) in which the second magnet (1251b) is placed can move along the rail located on the inner side of the housing through the second ball (B2) in a direction parallel to the Z-axis direction (both directions) by the electromagnetic force (DEM1) according to the direction of the current. At this time, the electromagnetic force (DEM1) can be controlled in proportion to the current (DE1) applied to the second coil (1252b). For example, the second lens assembly (1222b) in which the second magnet (1251b) is placed can move in the opposite direction to the third direction (Z-axis direction) by the electromagnetic force (DEM1). However, the positions of the polarity of each magnet described in this specification may be reversed.

[0171] Referring to FIG. 13, in a camera device according to an embodiment, a second driving unit may provide a driving force (F3A, F3B, F4A, F4B) that moves the first lens assembly (1222a) and the second lens assembly (1222b) of the lens unit (1220) along a third direction (Z-axis direction). As described above, this second driving unit may include a second driving coil (1252) and a second driving magnet (1251). The lens unit (1220) may move along the third direction (Z-axis direction) by the electromagnetic force formed between the second driving coil (1252) and the second driving magnet (1251).

[0172] At this time, the first coil (1252a) and the second coil (1252b) may be placed in a hole formed in the side of the second housing (1230) (e.g., the first side and the second side). The first coil (1252a) may be electrically connected to the first side substrate (1271). The second coil (1252b) may be electrically connected to the second side substrate (1272). Accordingly, the first coil (1252a) of the second camera actuator (1200) and the second coil (1252b) of the second camera actuator (1200) may receive a driving signal (e.g., current) from a driving driver on the main board of the circuit board (1300) through the second substrate section (1270).

[0173] At this time, due to the electromagnetic force (F4A, F4B) between the first coil (1252a) and the first magnet (1251a), the first lens assembly (1222a) on which the first magnet (1251a) is mounted can move along the third direction (Z-axis direction). Additionally, the third lens group (1221c) mounted on the first lens assembly (1222a) can also move along the third direction (Z-axis direction).

[0174] And, by the electromagnetic force (F3A, F3B) between the second coil (1252b) and the second magnet (1251b), the second lens assembly (1222b) on which the second magnet (1251b) is mounted can move along the third direction (Z-axis direction). Additionally, the second lens group (1221b) mounted on the second lens assembly (1222b) can also move along the third direction (Z-axis direction).

[0175] Accordingly, as described above, the focal length or magnification of the optical system can be changed by moving the second lens group (1221b) and the third lens group (1221c). In an example, the magnification can be changed by moving the second lens group (1221b). In other words, zooming can be performed. Also, the focus can be adjusted by moving the third lens group (1221c). In other words, auto-focusing can be performed. With this configuration, the second camera actuator can be a fixed zoom or a continuous zoom. Additionally, it should be understood that the positions of the polarities (N, S) of the first magnet and the second magnet in the second camera actuator can be changed.

[0176] FIG. 14 is a perspective view of a first side substrate, a fourth coil, a fourth magnet, a first sensor, a first lens assembly, and a third lens group in a second camera actuator according to an embodiment, FIG. 15 is a top view of a first side substrate, a fourth coil, a fourth magnet, a first sensor, a first lens assembly, and a third lens group in a second camera actuator according to an embodiment, and FIG. 16 is a side view of a fourth magnet, a fourth coil, and a first sensor in a second camera actuator according to an embodiment.

[0177] Referring to FIGS. 14 to 16, in the second camera actuator according to the embodiment, the first side substrate (1271) may be located on the outside. Additionally, the sensor part of the second camera actuator is described below with respect to the first sensor, the driving magnet with respect to the fourth magnet (or the first magnet or the first magnet of the second camera actuator), the driving coil with respect to the fourth coil (or the first coil or the first coil of the second camera actuator), the second substrate part with respect to the first side substrate, and the lens assembly with respect to the first lens assembly.

[0178] In an embodiment, the sensor portion may be disposed on the outer surface of the first side substrate (1271) or on the outer surface of the second side substrate, and the driving coil may be disposed on the inner surface of the first side substrate (1271) or on the inner surface of the second side substrate.

[0179] Specifically, the driving magnet, the driving coil, and the sensor unit are arranged in order of being further away from the optical axis and may not overlap in the direction of the optical axis or the third direction. The first sensor (1253a) may be located on the outer surface of the first side substrate (1271). And the first coil (1252a) may be located on the inner surface of the first side substrate (1271). In other words, the first side substrate (1271) may be located between the first sensor (1253a) and the first coil (1252a). With this configuration, the sensor unit can easily maintain the sensitivity of the magnetic force received from the driving magnet and the driving coil, thereby accurately detecting the linearity of the output through the sensor unit. Furthermore, when adjacent to the driving magnet, the decrease in linearity caused by a large amount of change due to the movement (or stroke) of the sensor unit can be prevented.

[0180] And the first magnet (1251a) may be positioned facing the first coil (1252a). For example, the first magnet (1251a) may be positioned to overlap at least partially with the first coil (1252a) in the second direction (Y-axis direction).

[0181] And the first magnet (1251a) can be seated on the side of the first lens assembly (1222a) as described above. Additionally, the third lens group (1221c) can be combined with the first lens assembly (1222a) and move in a third direction (Z-axis direction).

[0182] In an embodiment, the first coil (1252a) may be located between the first magnet (1251a) and the first sensor (1253a). That is, the first sensor (1253a) may be located outside of the first coil (1252a) and the first magnet (1251a).

[0183] And the first coil (1252a) may have a first separation distance (W3) from the first magnet (1251a) in the second direction (Y-axis direction). The first separation distance (W3) may have a ratio of 1:0.3 to 1:0.45 with the width (W1) in the second direction (Y-axis direction) of the first magnet (1251a). If the ratio is smaller than 1:0.3, the size of the second camera actuator increases, making miniaturization difficult, and if it is larger than 1:0.45, there is a problem that the detectable magnetic force range of the first sensor is exceeded.

[0184] Additionally, the width (W2) in the second direction (Y-axis direction) of the first coil (1252a) may be larger than the width (W1) in the second direction (Y-axis direction) of the first magnet (1251a).

[0185] And in the second camera actuator according to the embodiment, the first lens assembly (1222A), the third lens group (1221c), and the first magnet (1251a) can move together in the third direction (Z-axis direction).

[0186] First, the first magnet (1251a) may include a first polarity portion (1251aa), a second polarity portion (1251ab) having a polarity different from that of the first polarity portion (1251aa), and a void portion (1251ac) located between the first polarity portion (1251aa) and the second polarity portion (1251ab).

[0187] For example, the first polarity portion (1251aa), the void portion (1251ac), and the second polarity portion (1251ab) may be arranged sequentially along the third direction (Z-axis direction).

[0188] And the first polarity part (1251aa) may be either the N pole or the S pole, and the second polarity part (1251ab) may be the other of the N pole and the S pole.

[0189] Additionally, in the embodiment, the first magnet (1251a) has a gap (1251ac), so that the output according to the movement of the first magnet (1251a) in the first sensor (1253a) can be output linearly. In other words, due to the gap (1251ac), a change in magnetic force can occur linearly according to the positional relationship between the sensor part (e.g., the first sensor) and the driving magnet (e.g., the first magnet). For example, the first sensor (1253a) can output the output of the magnetic force from the first magnet (1251a) as a voltage, and this will be explained based on this.

[0190] Additionally, the first coil (1252a) of the second camera actuator (1200) may overlap at least partially with the first magnet (1251a) of the second camera actuator (1200) in the second direction (Y-axis direction). For example, based on the center position (0 stroke), the first coil (1252a) may include a first area (SS1a, SS1b) that overlaps with the first magnet (1251a) in the second direction (Y-axis direction) and a second area (SS2a, SS2b) that does not overlap with the first magnet (1251a) in the second direction (Y-axis direction). That is, the second area (SS2a, SS2b) may be an area other than the first area (SS1a, SS1b). And in this specification, the center position (0 stroke) refers to the point of bisect of the distance that the first magnet (1251a) can move. In the second camera actuator according to the embodiment, the lens assembly may move from the rear end to the front end or from the front end to the rear end of the second camera actuator. Accordingly, it should be understood that 0 stroke does not mean only the starting position of the movement of the lens assembly.

[0191] Additionally, the first region (SS1a, SS1b) may be an area where the driving coil and the driving magnet overlap in the direction from the driving magnet toward the driving coil or in the opposite direction. The second region (SS2a, SS2b) may be an area positioned above or below the driving magnet from the driving coil.

[0192] The first region (SS1a, SS1b) may include a first-1 region (SS1a) and a first-2 region (SS1b). The first-1 region (SS1a) may be a region located above the first virtual line (Va) in the first region, and the first-2 region (SS1b) may be a region located below the first virtual line (Va) in the first region. The first virtual line (Va) may be a bisector in the first direction (X-axis direction) of the first magnet (1251a). And the second virtual line (Vb), described later, may be a bisector in the third direction (Z-axis direction) of the first magnet (1251a). Alternatively, the first virtual line (Va) may be the bisector of the short side (La) of the first magnet (1251a), and the second virtual line (Vb) may be the bisector of the long side (Wa) of the first magnet (1251a). Additionally, the first virtual line (Va) may be the bisector of the first magnet (1251a) of the driving magnet in the direction of the optical axis or in the third direction.

[0193] Additionally, the second region (SS2a, SS2b) may include the second-1 region (SS2a) and the second-2 region (SS2b). The second-1 region (SS2a) is located below the first-1 region (SS1a) and may not overlap with the first magnet (1251a) in the second direction (Y-axis direction). Additionally, the second-2 region (SS2b) is located above the first-2 region (SS1b) and may not overlap with the first magnet (1251a) in the second direction (Y-axis direction).

[0194] In an example, only the first region that overlaps with the first magnet (1251a) in the second direction (Y-axis direction) from the first coil (1252a) may change.

[0195] Additionally, the first sensor (1253a) may be located in the air gap (1251ac) or at the lower / upper part of the air gap (1251ac) at the center position (0 stroke). That is, the first sensor (1253a) may be located in the area between the first polarity part (1251aa) and the second polarity part (1251ab). Alternatively, the first sensor (1253a) may be spaced apart from the first virtual line (Va). Alternatively, the first sensor (1253a) may be located in the first-1 area (SS1a) or the first-2 area (SS1b). With this configuration, the first sensor (1253a) may receive a minimal magnetic force at the center position. Accordingly, the first sensor (1253a) can have high linearity performance with only the polarity differing relative to the center position, that is, the same size, for the entire movement or entire stroke of the first magnet (1251a).

[0196] That is, the first sensor (1253a) according to the embodiment may be located at the upper / lower part of the first virtual line (Va) or at the upper / lower part of the center of the first magnet (1251a). In other words, the sensor part may not overlap with the driving magnet in the second direction. With this configuration, the problem of the first sensor (1253a) exceeding its sensing sensitivity due to strong magnetic force can be resolved. Furthermore, the problem of the change in magnetic force generated from the first magnet (1251a) being small and difficult to detect can be resolved.

[0197] Furthermore, the distance (dd1) from the first virtual line (Va) of the first sensor (1253a) according to the embodiment may be changed. Also, the first sensor (1253a) according to the embodiment may be positioned to overlap with either the second-1 area (SS2a) or the second-2 area (SS2b) in the second direction (Y-axis direction). With this configuration, the magnetic force generated from the first area (SS1a, SS1b) can be minimized compared to when the first sensor (1253a) is placed in the first area (SS1a, SS1b). As a result, the performance of the first sensor can be improved.

[0198] According to the embodiment, the ratio of the separation distance (dd1) to the length (Lb) in the first direction (X-axis direction) of the first coil may be 1:2.04 to 1:3.7. If the ratio is smaller than 1:2.04, the accuracy of the first sensor may be reduced due to the influence of the magnetic force generated from the first coil and the magnetic force of the first magnet. Additionally, if the ratio is larger than 1:3.7, there is a problem in that the influence of the magnetic force from the first coil and the first magnet is negligible and miniaturization is difficult.

[0199] Furthermore, the description of the first side substrate (1271), the first coil (1252a), the first magnet (1251a), the first sensor (1253a), the first lens assembly (1222a), and the third lens group (1221c) described above may be applied in the same way to the second side substrate, the fifth coil (or the second coil of the second camera actuator or the second coil), the fifth magnet (or the second magnet of the second camera actuator or the second magnet), the second sensor, the second lens assembly, and the second lens group.

[0200] FIG. 17 is a diagram illustrating the positional relationship of the fourth magnet, the fourth coil, and the first sensor according to the driving of the second camera actuator according to the embodiment, FIG. 18 is a diagram illustrating the driving of the first sensor overlapping the second area and the second direction in the second camera actuator according to the embodiment, and FIG. 19 is a diagram illustrating the driving of the first sensor overlapping the first area and the second direction in the second camera actuator according to the embodiment.

[0201] As described above, the first magnet (1251a) can move in a third direction (Z-axis direction) together with the first lens assembly (1222a) and the third lens group (1221c). For example, FIG. 17(a) shows a wide state, FIG. 17(c) shows a telephoto state, and FIG. 17(b) shows a central position state.

[0202] And in the first coil (1252a), the first region overlaps with the first magnet (1251a) in the second direction (Y-axis direction), and the magnetic force received from the first magnet (1251a) may differ as the first magnet (1251a) moves in the third direction (Z-axis direction).

[0203] For example, in a wide state, the first sensor (1253a) may be located adjacent to the first polarity portion (1251aa). For example, the first sensor (1253a) may be located below the first polarity portion (1251aa).

[0204] And in the telephoto state, the first sensor (1253a) can be positioned adjacent to the second polarity portion (1251ab). For example, the first sensor (1253a) can be positioned below the second polarity portion (1251ab).

[0205] Additionally, in the center position, the first sensor (1253a) can be located adjacent to the void (1251ac). For example, the first sensor (1253a) can be located below the void (1251ac).

[0206] Furthermore, the first sensor (1253a) may be located in a second region of the first coil (1252a). When the first sensor (1253a) is located in the first region, the first sensor (1253a) may receive the magnetic force generated in the first region of the first coil (1252a). Conversely, when the first sensor (1253b) is located in the second region, the first sensor (1253a) may minimize the magnetic force generated in the first region of the first coil (1252a). Accordingly, more accurate magnetic force detection may be possible through the first sensor (1253a).

[0207] Additionally, the first sensor (1253a) is positioned in the second region to minimize the influence from the magnetic force generated in the second-1 region and the influence from the magnetic force generated in the second-2 region. Accordingly, the first sensor (1253a) can linearly detect the magnetic force according to the position of the first magnet (1251a). (See FIGS. 18 and 19)

[0208] FIG. 20 is a perspective view of a mobile terminal to which a camera device according to an embodiment is applied, and

[0209] Referring to FIG. 20, the 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.

[0210] The camera device (1000) may include an image capturing function and an autofocus function. For example, the camera device (1000) may include an autofocus function using an image.

[0211] The camera device (1000) processes still image or video frame obtained by an image sensor in shooting mode or video call mode.

[0212] The processed image frame may be displayed on a designated display unit and stored in memory. A camera (not shown) may also be placed on the front of the mobile terminal body.

[0213] For example, the camera device (1000) may include a first camera device (1000) and a second camera device (1000), and OIS may be implemented with AF or zoom functions by the first camera device (1000A).

[0214] The flash module (1530) may include a light-emitting element that emits light inside. The flash module (1530) may be operated by the operation of the camera of the mobile terminal or by the control of the user.

[0215] The autofocus device (1510) may include one of the packages of surface light-emitting laser elements as a light-emitting part.

[0216] The autofocus device (1510) may include an autofocus function using a laser. The autofocus device (1510) may be mainly used in conditions where the autofocus function using the image of the camera device (1000) is degraded, such as in a close distance of 10m or less or in a dark environment.

[0217] The autofocus device (1510) may include a light-emitting part comprising a vertical cavity surface-emitting laser (VCSEL) semiconductor device and a light-receiving part that converts light energy into electrical energy, such as a photodiode.

[0218] FIG. 21 is a perspective view of a vehicle equipped with a camera device according to an embodiment.

[0219] For example, FIG. 21 is an exterior view of a vehicle equipped with a vehicle driving assistance device to which a camera device (1000) according to an embodiment is applied.

[0220] Referring to FIG. 21, the vehicle (700) of the embodiment may be equipped with wheels (13FL, 13FR) that rotate by a power source and a predetermined sensor. The sensor may be a camera sensor (2000), but is not limited thereto.

[0221] The camera (2000) may be a camera sensor to which the camera device (1000) according to the embodiment is applied. The vehicle (700) of the embodiment may acquire image information through a camera sensor (2000) that captures a front image or a surrounding image, and may determine a situation where a lane is not identified using the image information and generate a virtual lane when it is not identified.

[0222] For example, a camera sensor (2000) captures the front of a vehicle (700) to obtain a front image, and a processor (not shown) can obtain image information by analyzing objects included in the front image.

[0223] For example, if objects such as a median strip, curb, or roadside tree corresponding to a lane, adjacent vehicle, driving obstruction, and indirect road marking are captured in an image captured by a camera sensor (2000), the processor can detect these objects and include them in the image information. At this time, the processor can obtain distance information with respect to the objects detected through the camera sensor (2000) to further supplement the image information.

[0224] 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.

[0225] The camera sensor (2000) can process still images or videos obtained by an image sensor (e.g., CMOS or CCD).

[0226] The image processing module can process still images or videos acquired through an image sensor to extract necessary information and transmit the extracted information to a processor.

[0227] At this time, the camera sensor (2000) may include a stereo camera to improve the measurement accuracy of the object and to obtain more information such as the distance between the vehicle (700) and the object, but is not limited thereto.

[0228] Although the invention has been described above with reference to embodiments, this is merely illustrative and does not limit the invention. Those skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments may be modified and implemented. Furthermore, differences related to such modifications and applications should be interpreted as being included within the scope of the invention as defined in the appended claims.

Claims

Claim 1 A camera device comprising: a housing; a lens assembly including at least one lens within the housing; and a driving unit for moving the lens assembly in the direction of an optical axis; wherein the driving unit comprises a driving magnet and a driving coil positioned facing each other, and a sensor unit for detecting a magnetic force from the driving magnet; wherein the driving coil is disposed between the driving magnet and the sensor unit, and the sensor unit does not overlap with the driving magnet in the direction from the driving magnet toward the driving coil. Claim 2 A camera device according to claim 1, wherein the driving magnet comprises a first polarity portion and a second polarity portion having different polarities, the sensor portion is positioned offset from a first virtual line, and the first virtual line is a bisector of the driving magnet in the direction of the optical axis. Claim 3 In paragraph 2, the camera device further comprises a driving magnet having an air gap disposed between the first polarity portion and the second polarity portion. Claim 4 A camera device according to paragraph 2, wherein the driving coil comprises a first region that overlaps with the driving magnet in a direction toward the opposing driving magnet and a second region disposed above or below the driving magnet. Claim 5 In paragraph 4, the sensor part is a camera device disposed in the second area. Claim 6 delete Claim 7 A camera device according to claim 1, further comprising a first side substrate and a second side substrate electrically connected to the driving unit and spaced apart from each other on opposite sides of the housing. Claim 8 A camera device according to claim 7, wherein the sensor part is disposed on the outer surface of the first side substrate or the outer surface of the second side substrate, and the driving coil is disposed on the inner surface of the first side substrate or the inner surface of the second side substrate. Claim 9 A camera device according to claim 1, further comprising: a sensor unit including a tunnel magnetoresistance (TMR) sensor and a main substrate disposed at the rear end of the lens assembly and having an image sensor provided thereon. Claim 10 A camera device comprising: a housing; a lens assembly including at least one lens within the housing; and a driving unit for moving the lens assembly in the direction of an optical axis; wherein the driving unit includes a driving magnet and a driving coil positioned facing each other, and a sensor unit for detecting magnetic force from the driving magnet; wherein the driving magnet, the driving coil, and the sensor unit are arranged in order away from the optical axis and do not overlap in the direction of the optical axis, and the sensor unit overlaps in the direction toward the driving coil from the driving coil and the driving magnet.

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