Camera actuator and camera device comprising the same

Abstract

Embodiments of the present application provide a camera actuator, including: a base including a first side wall and a second side wall corresponding to the first side wall; a guide portion disposed adjacent to at least one of the first side wall and the second side wall; a first lens assembly and a second lens assembly movable relative to the first lens assembly in the first lens assembly; a driving portion for moving the first lens assembly and the second lens assembly; and first and second balls disposed at an upper side of the first lens assembly and a lower side of the first lens assembly, respectively, wherein the first lens assembly is moved along the guide portion by the first and second balls.

Description

TECHNICAL FIELD

[0001] The present application relates to a camera actuator and a camera device including the same. BACKGROUND

[0002] A camera is a device for photographing a picture or a video of an object, and is mounted on a portable device, a drone, a vehicle, etc. A camera device can have an image stabilization (IS) function of correcting or preventing image shake caused by a user's movement to improve image quality, an auto focus function of aligning a focal length of a lens by automatically adjusting a distance between an image sensor and the lens, and a zoom function of capturing a remote object by increasing or decreasing a magnification of the remote object via a zoom lens.

[0003] Meanwhile, as pixels have a higher resolution, the resolution of an image sensor increases, so the size of the pixels becomes smaller, and as the pixels are smaller, the amount of light received in the same time decreases. Therefore, as the camera has pixels of a higher resolution, image shake caused by hand shake that occurs when a shutter speed is reduced in a dark environment can occur more severely. As a representative image stabilization (IS) technology, there is an optical image stabilizer (OIS) technology of correcting motion by changing an optical path.

[0004] According to the general OIS technology, the motion of the camera can be detected by a gyro sensor or the like, and a lens can be tilted or moved based on the detected motion, or a camera module including the lens and the image sensor for OIS can be tilted or moved. In order to tilt or move the lens or the camera module including the lens and the image sensor for OIS, it is necessary to additionally secure a space for tilting or moving around the lens or the camera module.

[0005] Meanwhile, an actuator for OIS can be disposed around the lens. In this case, the actuator for OIS can include an actuator responsible for tilting of two axes, which are an X axis and a Y axis perpendicular to a Z axis direction that is an optical axis direction.

[0006] However, according to the demand for ultra-thin and ultra-small camera devices, there is a great space constraint for arranging the actuator for OIS, and it can be difficult to secure enough space in which the lens or the camera module including the lens and the image sensor itself can be tilted or moved for OIS. In addition, as the camera has pixels of a higher resolution, it is preferable to increase the size of the lens to increase the amount of light received, and there can be a limitation to increasing the size of the lens due to the space occupied by the actuator for OIS.

[0007] In addition, when a zoom function, an AF function, and an OIS function are all included in a camera device, there is also a problem in which OIS magnets and AF or zoom magnets are disposed close to each other, causing magnetic field interference.

[0008] In addition, there is a spatial constraint or limitation on moving a lens. SUMMARY

[0009] TECHNICAL PROBLEM

[0010] The present application aims to provide a camera actuator in which a first lens assembly and a second lens assembly are moved relative to each other.

[0011] In addition, embodiments aim to provide a camera actuator in which first and second balls for moving a lens assembly are positioned on a side surface of the actuator, thereby improving reliability and driving force.

[0012] In addition, embodiments aim to provide a camera actuator in which electrical connection is performed through the first or second ball.

[0013] In addition, embodiments aim to provide a camera actuator that is suitable for a camera that is ultra-thin, ultra-compact, and high-resolution.

[0014] The objectives of the embodiments are not limited thereto and will also include objectives or effects that can be identified from the configurations or embodiments.

[0015] TECHNICAL SOLUTION

[0016] A camera actuator according to an embodiment of the present application includes a base including a first side wall and a second side wall corresponding to the first side wall, a guide portion disposed adjacent to at least one of the first side wall and the second side wall, a first lens assembly and a second lens assembly movable relative to the first lens assembly in the first lens assembly, a driving portion configured to move the first lens assembly and the second lens assembly, and first and second balls disposed on an upper side of the first lens assembly and a lower side of the first lens assembly, respectively, wherein the first lens assembly is moved along the guide portion by the first and second balls.

[0017] The first ball can be disposed between the first lens assembly and the guide portion, and the second ball can be disposed between the first lens assembly and the second side wall.

[0018] The first lens side surface can include a first recess in which the first ball is seated, and the second lens side surface can include a second recess in which the second ball is seated.

[0019] The guide portion can include a main body including a guide rail, a first connection member positioned on the guide rail, and a second connection member disposed between the first recess and the first ball and extending in the optical axis direction.

[0020] The first ball can be disposed between the first connection member and the second connection member and can at least partially make contact with the first connection member and the second connection member.

[0021] The first connection member can include an extension portion extending to the outside of the main body.

[0022] The camera actuator can further include a board portion disposed outside the guide portion, and the extension portion can be electrically connected to the board portion.

[0023] The first ball can be made of an electrically conductive material.

[0024] The driving portion can include a first lens driving portion including a first coil and a first magnet positioned in the guide portion, and a second lens driving portion including a second coil positioned inside the first lens assembly and a second magnet positioned between the second side wall and the first lens assembly.

[0025] The camera actuator can further include an elastic portion configured to connect the second lens assembly and the first lens assembly, and the second coil can be electrically connected to the first connection member, the first ball, the second connection member, and the elastic portion.

[0026] A shape of the first connection member can correspond to a shape of the guide rail.

[0027] The first lens assembly can be disposed in the base.

[0028] The second coil can be positioned inside the first coil.

[0029] The first magnet can be positioned to correspond to the second magnet in a third direction, and the first coil can be positioned to be misaligned with the second coil in the third direction.

[0030] The second coil can surround the second lens assembly.

[0031] Advantageous Effects

[0032] A camera actuator in which a first lens assembly and a second lens assembly are moved relative to each other can be implemented.

[0033] In addition, according to an embodiment, a camera actuator in which first and second balls for moving a lens assembly are positioned on a side surface of the actuator, thereby improving reliability and driving force, can be implemented.

[0034] In addition, according to an embodiment, a camera actuator in which electrical connection is performed through the first or second ball, can be implemented.

[0035] According to an embodiment of the present invention, a camera actuator suitable for a super-thin, super-small, high-resolution camera can be provided. In particular, even without increasing the overall size of a camera device, an actuator for OIS can be efficiently disposed.

[0036] According to an embodiment of the present invention, tilting in an X-axis direction and tilting in a Y-axis direction do not cause magnetic fields to interfere with each other, a stable structure for performing tilting in the X-axis direction and tilting in the Y-axis direction can be implemented, and an accurate OIS function can be implemented because interference with magnetic fields of an AF or zoom actuator also does not occur.

[0037] According to an embodiment of the present invention, sufficient light quantity can be secured by eliminating a size limitation of a lens, and OIS can be implemented with low power consumption.

[0038] Various advantageous advantages and effects of the present invention are not limited to the above and will be more easily understood in the course of describing specific embodiments of the present invention. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a perspective view of a camera module according to an embodiment.

[0040] Figure 2 is an exploded perspective view of a camera module according to an embodiment.

[0041] Figure 3 is a cross-sectional view along the A-A' line of Figure 1 .

[0042] Figure 4 is an exploded perspective view of a first camera actuator according to an embodiment.

[0043] Figure 5 is a perspective view of a first camera actuator according to an embodiment, with a shield can and a substrate removed.

[0044] Figure 6 is a cross-sectional view along the line B-B' in Figure 5

[0045] Figure 7 is a cross-sectional view along the line C-C' in Figure 5

[0046] Figure 8 is a perspective view of a second camera actuator according to an embodiment.

[0047] Figure 9 is an exploded perspective view of a second camera actuator according to an embodiment.

[0048] Figure 10a is a perspective view of a base according to an embodiment.

[0049] Figure 10b is a top view of a base according to an embodiment.

[0050] Figure 10c is a view showing a first side wall of a base according to an embodiment.

[0051] Figure 10d is a view showing a second side wall of a base according to an embodiment.

[0052] Figure 10e is a back view of a base according to an embodiment.

[0053] Figure 10f is a front view of a base according to an embodiment.

[0054] Figure 11a is a perspective view of a third lens assembly according to an embodiment.

[0055] Figure 11b is a back view of a third lens assembly according to an embodiment.

[0056] Figure 11c is a front view of a third lens assembly according to an embodiment.

[0057] Figure 12a is a perspective view of a first lens assembly according to an embodiment.

[0058] Figure 12b is a front view of a first lens assembly according to an embodiment.

[0059] Figure 12c is a back view of a first lens assembly according to an embodiment.

[0060] Figure 12d is a view showing a first lens side surface of a first lens assembly according to an embodiment. ​​

[0061] Figure 12e This is a view showing the second lens side surface of the first lens assembly according to an embodiment.

[0062] Figure 13a This is a perspective view of the guide section according to an embodiment.

[0063] Figure 13b This is a perspective view of the main body of the guide section according to an embodiment.

[0064] Figure 13c This is a view showing the outer surface of the main body of the guide portion according to an embodiment.

[0065] Figure 13d This is a view showing the inner surface of the main body of the guide portion according to an embodiment.

[0066] Figure 13e This is a front view of the main body of the guide section according to an embodiment.

[0067] Figure 13f This is a rear view of the main body of the guide section according to an embodiment.

[0068] Figure 13g This is a perspective view of the first connecting member of the guide portion according to an embodiment.

[0069] Figure 13h This is a perspective view of the second connecting member of the guide portion according to an embodiment.

[0070] Figure 13i This is a view showing the inside of the guide portion according to an embodiment.

[0071] Figure 14 This is a perspective view of the second driving unit and the second lens assembly according to an embodiment.

[0072] Figure 15 This is a perspective view of the elastic part according to an embodiment.

[0073] Figure 16 This is a perspective view of the second plate portion according to an embodiment.

[0074] Figure 17 It is along Figure 8 A cross-sectional view of the D-D' line in the diagram.

[0075] Figure 18 This is a rear view showing some components of the second camera actuator according to an embodiment.

[0076] Figure 19 This is a view showing the rear side of the second camera actuator according to an embodiment.

[0077] Figure 20is a perspective view of a guide according to an embodiment.

[0078] Figure 21 is a view showing movement by a first lens driving portion according to an embodiment.

[0079] Figure 22 is a view showing movement by a second lens driving portion according to an embodiment.

[0080] Figure 23 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0081] Figure 24 is a perspective view of a vehicle to which a camera module according to an embodiment is applied. DETAILED DESCRIPTION

[0082] Since the present application can have various changes and has various embodiments, specific embodiments are illustrated and described in the drawings.

[0083] However, it is to be understood that this is not intended to limit the specific embodiments and should be understood to include all modifications, equivalents and alternatives included in the spirit and scope of the present application.

[0084] Terms including ordinal numbers such as "second" or "first" can be used to describe various components. However, the components are not limited by the terms and the terms are used only for the purpose of distinguishing one component from another component. For example, a second component can be referred to as a first component, and similarly, a first component can also be referred to as a second component, without departing from the scope of the present application. The term "and / or" includes a combination of a plurality of associated listed items or any one of the plurality of associated listed items.

[0085] When a certain component is described as being "connected" or "coupled" to another component, it should be understood that the component can be directly connected or coupled to the other component, but there can also be another component therebetween. On the other hand, when a certain component is described as being "directly connected" or "directly coupled" to another component, it should be understood that there is no other component therebetween.

[0086] The terms used in the present application are only used to describe specific embodiments and are not intended to limit the present application. Singular expressions include plural expressions, unless the context clearly dictates otherwise. In the present application, it is understood that terms such as "include" or "have" are intended to explicitly exist features, numbers, steps, operations, components, parts or combinations thereof described in the specification, but do not preclude the possibility of existence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0087] Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0088] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, and the same or corresponding components are given the same reference numerals regardless of the drawings, and repetitive description thereof will be omitted.

[0089] Figure 1 is a perspective view of a camera module according to an embodiment, Figure 2 is an exploded perspective view of a camera module according to an embodiment, Figure 3 is a cross-sectional view along the line A-A' in Figure 1 .

[0090] Referring to Figure 1 and Figure 2 , a camera module 1000 according to an embodiment can include a cover CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. Herein, the first camera actuator 1100 can be used interchangeably with a first actuator, and the second camera actuator 1200 can be used interchangeably with a second actuator.

[0091] The cover CV can cover the first camera actuator 1100 and the second camera actuator 1200. It is possible to increase a coupling force between the first camera actuator 1100 and the second camera actuator 1200 through the cover CV.

[0092] Further, the cover CV can be made of a material that blocks electromagnetic waves. Accordingly, it is possible to easily protect the first camera actuator 1100 and the second camera actuator 1200 in the cover CV.

[0093] In addition, the first camera actuator 1100 can be an optical image stabilizer (OIS) actuator.

[0094] The first camera actuator 1100 can include a lens. For example, the first camera actuator 1100 can include a fixed focal length lens (not shown) disposed on a predetermined lens barrel. The fixed focal length lens can be referred to as a "single focal length lens" or a "single lens".

[0095] The first camera actuator 1100 can change an optical path. In an embodiment, the first camera actuator 1100 can vertically change the optical path through an optical member (e.g., a mirror or a prism) therein. With such a configuration, even when the thickness of the mobile terminal is reduced, a configuration of a lens larger than the thickness of the mobile terminal can be provided in the mobile terminal through the change of the optical path, so that zoom, auto focus (AF), and OIS functions can be performed.

[0096] The second camera actuator 1200 can be disposed at a rear end of the first camera actuator 1100. The second camera actuator 1200 can be coupled to the first camera actuator 1100. In addition, the mutual coupling can be performed through various methods.

[0097] In addition, the second camera actuator 1200 can be a zoom actuator or an AF actuator. For example, the second camera actuator 1200 can support one lens or multiple lenses, and perform an AF function or a zoom function by moving the lens according to a predetermined control signal of a control part.

[0098] The circuit board 1300 can be disposed at a rear end of the second camera actuator 1200. The circuit board 1300 can be electrically connected to the second camera actuator 1200 and the first camera actuator 1100. In addition, a plurality of circuit boards 1300 can be provided.

[0099] The camera module according to an embodiment can be formed of a single module or a plurality of camera modules. For example, the plurality of camera modules can include a first camera module and a second camera module.

[0100] In addition, the first camera module can include a single actuator or a plurality of actuators. For example, the first camera module can include the first camera actuator 1100 and the second camera actuator 1200.

[0101] In addition, the second camera module can be disposed in a predetermined housing (not shown), and include an actuator (not shown) that can drive a lens part. The actuator can be a voice coil motor, a micro actuator, a silicon actuator, etc., and is applied in various methods such as an electrostatic method, a thermal method, a bimorph method, and an electrostatic force method, but is not limited thereto. In addition, in the present specification, the camera actuator can be referred to as an actuator, etc. In addition, the camera module including a plurality of camera modules can be mounted in various electronic devices such as a mobile terminal.

[0102] Reference Figure 3 According to an embodiment, the camera module can include a first camera actuator 1100 for performing an OIS function and a second camera actuator 1200 for performing a zoom function and an AF function.

[0103] Light can be incident into the camera module through an open region positioned on the upper surface of the first camera actuator 1100. In other words, light can be incident into the first camera actuator 1100 in the X-axis direction, and can change the optical path in the vertical direction (e.g., the Z-axis direction) through the optical member. In addition, light can pass through the second camera actuator 1200, and can be incident on the image sensor positioned at one end of the second camera actuator 1200 (PATH). Accordingly, the optical axis direction can be the Z-axis direction, which is the direction of incidence of light on the image sensor. For example, the optical axis can be the central axis of the incident light, but hereinafter can correspond to the Z-axis direction, which is the moving direction of light after being reflected through the optical member.

[0104] In addition, in the present specification, the bottom surface refers to one side in the first direction. In addition, the first direction is the X-axis direction in the drawing, and can be used interchangeably with the second axis direction, etc. The second direction is the Y-axis direction in the drawing, and can be used interchangeably with the first axis direction. The second direction is a direction perpendicular to the first direction. In addition, the third direction is the Z-axis direction in the drawing, and can be used interchangeably with the third axis direction. The third direction is perpendicular to the first and second directions. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first and second directions (X-axis and Y-axis directions) are directions perpendicular to the optical axis, and can be tilted by the first camera actuator. Detailed descriptions thereof will be given below.

[0105] In addition, in the following description of the first camera actuator 1100 and the second camera actuator 1200, the optical axis direction is the third direction (Z-axis direction), and will be described based thereon hereinafter.

[0106] In addition, by such a configuration, the camera module according to the embodiment can reduce the spatial restriction of the first and second camera actuators by changing the optical path. In other words, the camera module according to the embodiment can extend the optical path while minimizing the thickness of the camera module in response to the change in the optical path. Furthermore, it should be understood that the second camera actuator can provide a high range of magnification by controlling the focal point, etc., in the extended optical path.

[0107] In addition, the camera module according to the embodiment can achieve OIS by controlling the optical path by the first camera actuator, thereby minimizing the occurrence of the eccentricity or tilting phenomenon, and providing optimal optical characteristics.

[0108] Further, the second camera actuator 1200 can include an optical system and a lens driving part. For example, at least one of a first lens assembly, a second lens assembly, a third lens assembly, and a guide pin can be disposed in the second camera actuator 1200.

[0109] In addition, the second camera actuator 1200 can include a coil and a magnet, and perform a zoom function with a high magnification.

[0110] For example, the first lens assembly and the second lens assembly can be moving lenses that move by a coil, a magnet, and a guide pin, and the third lens assembly can be a fixed lens, but the present application is not limited thereto. For example, the third lens assembly can perform a function of a focuser through which light forms an image at a specific position, and the first lens assembly can perform a function of a transformer for reforming the image formed at the third lens assembly as the focuser at another position. Meanwhile, the first lens assembly can be in a state in which a magnification change is large because a distance to an object or an image distance changes greatly, and the first lens assembly as the transformer can play an important role in a focal length or a magnification change of an optical system. Meanwhile, image points of an image formed at the first lens assembly as the transformer can be slightly different depending on a position. Accordingly, the second lens assembly can perform a position compensation function for the image formed by the transformer. For example, the second lens assembly can perform a function of a compensator for accurately forming an image at an actual position of an image sensor using image points of the image formed at the first lens assembly as the transformer. For example, the first lens assembly and the second lens assembly can be driven by electromagnetic force generated due to interaction between a coil and a magnet. The above description can be applied to the lens assembly to be described below.

[0111] Meanwhile, when the OIS actuator and the AF actuator or the zoom actuator are disposed according to the embodiment of the present application, it is possible to prevent magnetic field interference with the AF magnet or the zoom magnet when the OIS is driven. Since the first driving magnet of the first camera actuator 1100 is disposed 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 the present specification, OIS can be used interchangeably with terms such as hand shake correction, optical image stabilization, optical image correction, shake correction, etc.

[0112] Figure 4 is an exploded perspective view of a first camera actuator according to an embodiment.

[0113] Reference Figure 4The 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.

[0114] The mover 1130 can include a support 1131 and an optical member 1132 disposed on the support 1131. The mover 1130 can change an incident light path. In addition, the rotating part 1140 includes a rotating plate 1141, a first magnetic substance 1142 having a coupling force with the rotating plate 1141, and a second magnetic substance 1143 positioned in the rotating plate 1141. In addition, the first driving part includes a driving magnet 1151, a driving coil 1152, a Hall sensor part 1153, and a first plate part 1154.

[0115] The first shield can (not shown) can be positioned on the outermost side of the first camera actuator 1100 and positioned to surround the rotating part 1140 and the first driving part described below.

[0116] The first shield can (not shown) can block or reduce electromagnetic waves generated from the outside. Accordingly, it is possible to reduce the occurrence of malfunctions of the rotating part 1140 and the first driving part.

[0117] The first housing 1120 can be positioned inside the first shield can (not shown). In addition, the first housing 1120 can be positioned inside the first plate part 1154 described below. The first housing 1120 can be fastened by being inserted or fitted into the first shield can (not shown).

[0118] The first housing 1120 can be formed of a plurality of housing sides. The first housing 1120 can include a first housing side 1121, a second housing side 1122, a third housing side 1123, and a fourth housing side 1124.

[0119] The first housing side 1121 and the second housing side 1122 can be disposed to face each other. In addition, 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.

[0120] The third housing side 1123 can contact the first housing side 1121, the second housing side 1122, and the fourth housing side 1124. In addition, the third housing side 1123 can include a bottom surface as a lower side of the first housing 1120.

[0121] In addition, the first housing side portion 1121 can include a first housing hole 1121a. A first coil 1152a, which will be described below, can be positioned in the first housing hole 1121a.

[0122] In addition, the second housing side portion 1122 can include a second housing hole 1122a. A second coil 1152b, which will be described below, can be positioned in the second housing hole 1122a.

[0123] The first coil 1152a and the second coil 1152b can be coupled to the first plate portion 1154. In an embodiment, the first coil 1152a and the second coil 1152b can be electrically connected to the first plate portion 1154 so that an electric current can flow. The electric current is a component of an electromagnetic force that can allow the second camera actuator to be tilted with respect to the X-axis.

[0124] In addition, the third housing side portion 1123 can include a third housing hole 1123a. A third coil 1152c, which will be described below, can be positioned in the third housing hole 1123a. The third coil 1152c can be coupled to the first plate portion 1154. In addition, the third coil 1152c can be electrically connected to the first plate portion 1154 so that an electric current can flow. The electric current is a component of an electromagnetic force that can allow the second camera actuator to be tilted with respect to the Y-axis.

[0125] The fourth housing side portion 1124 can include a first housing groove 1124a. A first magnetic substance 1142, which will be described below, can be disposed in an area facing the first housing groove 1124a. Accordingly, the first housing 1120 can be coupled to the rotating plate 1141 by a magnetic force or the like.

[0126] In addition, the first housing groove 1124a according to an embodiment can be positioned on an inner surface or an outer surface of the fourth housing side portion 1124. Accordingly, the first magnetic substance 1142 can be disposed to correspond to a position of the first housing groove 1124a.

[0127] In addition, the first housing 1120 can include a receiving portion 1125 formed by the first housing side portion 1121 to the fourth housing side portion 1224. The mover 1130 can be positioned in the receiving portion 1125.

[0128] The mover 1130 includes a support 1131 and an optical member 1132 seated on the support 1131.

[0129] The support 1131 can be seated on the receiving portion 1125 of the first housing 1120. The support 1131 can include outer surfaces of first to fourth prisms corresponding to the first housing side portion 1121, the second housing side portion 1122, the third housing side portion 1123, and the fourth housing side portion 1124, respectively.

[0130] A seating groove in which the second magnetic substance 1143 can be seated can be provided on the outer surface of the fourth prism facing the fourth housing side portion 1124.

[0131] The optical member 1132 can be seated on the support 1131. To this end, the support 1131 can have a seating surface, and the seating surface can be formed by a receiving groove. The optical member 1132 can include a reflection portion provided therein. However, the present application is not limited thereto. In addition, the optical member 1132 can reflect light reflected from the outside (e.g., an object) into the camera module. In other words, the optical member 1132 can reduce the spatial limitation of the first and second camera actuators by changing the reflection light path. Accordingly, it is to be understood that the camera module can also provide a high range of magnification by extending the light path while minimizing its thickness. For example, the optical member 1132 can include a prism, a mirror, or the like.

[0132] The rotation portion 1140 includes a rotation plate 1141, a first magnetic substance 1142 having a coupling force with the rotation plate 1141, and a second magnetic substance 1143 positioned in the rotation plate 1141.

[0133] The rotation plate 1141 can be coupled to the above-described mover 1130 and the first housing 1120. The rotation plate 1141 can include an additional magnetic substance (not shown) positioned therein.

[0134] In addition, the rotation plate 1141 can be disposed adjacent to an optical axis. Accordingly, the actuator according to an embodiment can easily change the light path according to the tilting of the first and second axes to be described below.

[0135] The rotation plate 1141 can include first protrusions spaced apart in the first direction (X-axis direction) and second protrusions spaced apart in the second direction (Y-axis direction). In addition, the first and second protrusions can protrude in opposite directions. Detailed descriptions thereof will be given below.

[0136] In addition, the first magnetic substance 1142 can include a plurality of yokes, and the plurality of yokes can be positioned to face each other with respect to the rotation plate 1141. In an embodiment, the first magnetic substance 1142 can be formed of a plurality of yokes facing each other. In addition, the rotation plate 1141 can be positioned between the plurality of yokes.

[0137] The first magnetic substance 1142 can be positioned in the above-described first housing 1120. In addition, as described above, the first magnetic substance 1142 can be disposed on the inner surface or the outer surface of the fourth housing side portion 1124. For example, the first magnetic substance 1142 can be disposed in a groove formed in the outer surface of the fourth housing side portion 1124. Alternatively, the first magnetic substance 1142 can be disposed in the above-described first housing groove 1124a.

[0138] In addition, the second magnetic substance 1143 can be positioned on the outer surface of the mover 1130, particularly the stand 1131. With this configuration, the rotation plate 1141 can be easily coupled to the first housing 1120 and the mover 1130 by a coupling force caused by the internal magnetic force between the second magnetic substance 1143 and the first magnetic substance 1142. In the present application, the positions of the first magnetic substance 1142 and the second magnetic substance 1143 can be moved from each other. For example, an attractive force or a repulsive force can act between the first magnetic substance 1142 and the second magnetic substance 1143. For the attractive force, the attractive force between the first magnetic substance 1142 and the second magnetic substance 1143 can press the rotation plate 1141 between the stand and the housing. Thus, in addition to the X / Y axis tilt, the posture or position of the rotation plate 1141 can be maintained by the first driving portion.

[0139] The first driving portion includes a driving magnet 1151, a driving coil 1152, a Hall sensor portion 1153, and a first plate portion 1154.

[0140] The driving magnet 1151 can include a plurality of magnets. In an embodiment, the driving magnet 1151 can include a first magnet 1151a, a second magnet 1151b, and a third magnet 1151c.

[0141] Each of the first magnet 1151a, the second magnet 1151b, and the third magnet 1151c can be positioned on the outer surface of the stand 1131. In addition, the first magnet 1151a and the second magnet 1151b can be positioned to face each other. In addition, the third magnet 1151c can be positioned on the bottom surface of the outer surface of the stand 1131. Detailed descriptions thereof will be given below.

[0142] The driving coil 1152 can include a plurality of coils. In an embodiment, the driving coil 1152 can include a first coil 1152a, a second coil 1152b, and a third coil 1152c.

[0143] The first coil 1152a can be positioned to face the first magnet 1151a. Accordingly, the first coil 1152a can be positioned in the first housing hole 1121a of the first housing side 1121 described above.

[0144] In addition, the second coil 1152b can be positioned to face the second magnet 1151b. Accordingly, the second coil 1152b can be positioned in the second housing hole 1122a of the second housing side 1122 described above.

[0145] The first coil 1152a can be positioned to face the second coil 1152b. In other words, the first coil 1152a can be positioned to be symmetrical to the second coil 1152b with respect to a first direction (X-axis direction). This can also be applied in the same manner to the first magnet 1151a and the second magnet 1151b. In other words, the first magnet 1151a and the second magnet 1151b can be positioned to be symmetrical with respect to the first direction (X-axis direction). In addition, the first coil 1152a, the second coil 1152b, the first magnet 1151a, and the second magnet 1151b can be disposed to at least partially overlap each other in a second direction (Y-axis direction). Through this configuration, X-axis tilting can be accurately performed without tilting to one side by electromagnetic force between the first coil 1152a and the first magnet 1151a and electromagnetic force between the second coil 1152b and the second magnet 1151b.

[0146] The third coil 1152c can be positioned to face the third magnet 1151c. Accordingly, the third coil 1152c can be positioned in the third housing hole 1123a of the third housing side 1123 described above. The third coil 1152c can perform Y-axis tilting of the mover 1130 and the rotating part 1140 with respect to the first housing 1120 by generating electromagnetic force with the third magnet 1151c.

[0147] Here, X-axis tilting refers to tilting with respect to the X-axis, and Y-axis tilting refers to tilting with respect to the Y-axis.

[0148] The Hall sensor part 1153 can include a plurality of Hall sensors. The Hall sensor corresponds to and is used interchangeably with "a position sensor" which will be described below. Also, the Hall sensor can be used as various terms such as a position detection sensor, a position detection part, and a position sensing part. In an embodiment, the Hall sensor part 1153 can include a first Hall sensor 1153a, a second Hall sensor 1153b, and a third Hall sensor 1153c.

[0149] The first Hall sensor 1153a can be positioned inside the first coil 1152a. Also, the second Hall sensor 1153b can be disposed to be symmetrical to the first Hall sensor 1153a with respect to the first direction (X-axis direction) and the third direction (Z-axis direction). Also, the second Hall sensor 1153b can be positioned inside the second coil 1152b.

[0150] The first Hall sensor 1153a can detect a change in magnetic flux inside the first coil 1152a. Also, the second Hall sensor 1153b can detect a change in magnetic flux in the second coil 1152b. Accordingly, position sensing between the first and second magnets 1151a and 1151b and the first and second Hall sensors 1153a and 1153b can be performed. Accordingly, the first and second coils 1152a and 1152b of the second camera actuator according to an embodiment can control X-axis tilting.

[0151] Also, the third Hall sensor 1153c can be positioned inside the third coil 1152c. The third Hall sensor 1153c can detect a change in magnetic flux inside the third coil 1152c. Accordingly, position sensing between the third magnet 1151c and the third Hall sensor 1153c can be performed. Accordingly, the second camera actuator according to an embodiment can control Y-axis tilting.

[0152] The first board part 1154 can be positioned below the first driving part. The first board part 1154 can be electrically connected to the driving coil 1152 and the Hall sensor part 1153. For example, the first board part 1154 can be coupled to the driving coil 1152 and the Hall sensor part 1153 by surface mount technology (SMT). However, the present application is not limited to this method.

[0153] The first plate portion 1154 can be positioned between a first shield can (not shown) and the first housing 1120, and coupled to the first shield can and the first housing 1120. The coupling method can be performed in various ways as described above. In addition, the driving coil 1152 and the Hall sensor portion 1153 can be positioned in the outer surface of the first housing 1120 by the coupling.

[0154] The first plate portion 1154 can include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (rigid PCB), a flexible PCB, and a rigid-flexible PCB. However, the present application is not limited to the type.

[0155] Detailed descriptions between the Hall sensor portion 1153 and the first plate portion 1154 will be described below.

[0156] Figure 5 is a perspective view of a first camera actuator according to an embodiment with a shield can and a substrate removed, Figure 6 is a cross-sectional view along line B-B' in Figure 5 , and Figure 7 is a cross-sectional view along line C-C' in Figure 5 .

[0157] Referring to Figures 5 to 7 , the first coil 1152a can be positioned on the first housing side portion 1121.

[0158] In addition, the first coil 1152a and the first magnet 1151a can be positioned to face each other. The first magnet 1151a can at least partially overlap the first coil 1152a in the second direction (Y-axis direction).

[0159] In addition, the second coil 1152b can be positioned on the second housing side portion 1122 of the first housing 1120. Accordingly, the second coil 1152b and the second magnet 1151b can be positioned to face each other. The second magnet 1151b can at least partially overlap the second coil 1152b in the second direction (Y-axis direction).

[0160] In addition, the first coil 1152a and the second coil 1152b can overlap in the second direction (Y-axis direction), and the first magnet 1151a and the second magnet 1151b can overlap in the second direction (Y-axis direction). With this configuration, electromagnetic forces applied to the outer surfaces of the brackets (the outer surface of the first bracket and the outer surface of the second bracket) can be positioned on parallel axes in the second direction (Y-axis direction), and thus, X-axis tilting can be accurately and precisely performed.

[0161] In addition, a first accommodation groove (not shown) can be positioned in an outer surface of the fourth support. In addition, first protrusions PR1a and PR1b can be provided in the first accommodation groove. Accordingly, when X-axis tilting is performed, the first protrusions PR1a and PR1b can serve as a reference axis (or a rotation axis) of tilting. Accordingly, the rotation plate 1141 and the mover 1130 can be moved laterally.

[0162] The second protrusion PR2 can be seated in a groove of an inner surface of the fourth housing side portion 1124 described above. In addition, when Y-axis tilting is performed, the rotation plate and the mover can be rotated using the second protrusion PR2 serving as a reference axis of Y-axis tilting.

[0163] According to an embodiment, OIS can be performed by the first protrusion and the second protrusion. In addition, as a modification example, the first protrusion and the second protrusion can be provided on opposite surfaces with respect to the base. In other words, the first protrusion can be provided on either one of the first surface and the second surface of the base. In addition, the second protrusion can be provided on the other one of the first surface and the second surface of the base.

[0164] Reference Figure 6 Y-axis tilting can be performed. In other words, OIS can be achieved by rotation in a first direction (X-axis direction).

[0165] In an embodiment, a third magnet 1151c provided below the support 1131 can form an electromagnetic force with a third coil 1152c to tilt or rotate the mover 1130 in a first direction (X-axis direction).

[0166] Specifically, the rotation plate 1141 can be coupled to the first housing 1120 and the mover 1130 by a first magnetic substance 1142 in the first housing 1120 and a second magnetic substance 1143 in the mover 1130. In addition, the first protrusions PR1 can be spaced apart from each other in a first direction (X-axis direction) and supported by the first housing 1120.

[0167] In addition, the rotation plate 1141 can be rotated or tilted using the second protrusion PR2 protruding toward the mover 1130 serving as a reference axis (or a rotation axis). In other words, the rotation plate 1141 can perform Y-axis tilting using the second protrusion PR2 serving as a reference axis.

[0168] For example, OIS can be implemented while rotating (X1 -> X1b or X1a) the mover 1130 in the X-axis direction at a first angle θ1 by first electromagnetic forces F1A and F1B between the third magnets 1151c disposed in the third seating groove and the third coils 1152c disposed in the third substrate side. The first angle θ1 can be in the range of ±1° to ±3°. However, the present application is not limited thereto.

[0169] Referring to Figure 7 X-axis tilting can be performed. In other words, OIS can be implemented by rotation in the second direction (Y-axis direction).

[0170] As the mover 1130 is tilted or rotated in the Y-axis direction (or X-axis tilting), OIS can be implemented.

[0171] In an embodiment, the first and second magnets 1151a and 1151b disposed in the obtained seat 1131 form electromagnetic forces with the first and second coils 1152a and 1152b, respectively, to rotate or tilt the obtained rotating plate 1141 and the mover 1130 in the second direction (Y-axis direction).

[0172] The obtained rotating plate 1141 can be rotated or tilted (X-axis tilting) in the second direction using the obtained first protrusion PR1 serving as a reference axis (or a rotation axis).

[0173] For example, OIS can be implemented while rotating (Y1 -> Y1a or Y1b) the mover 1130 in the Y-axis direction at a second angle θ2 by second electromagnetic forces F2A and F2B between the first and second magnets 1151a and 1151b disposed in the first seating groove and the first and second coils 1152a and 1152b disposed in the side portions of the first and second plates. The second angle θ2 can be in the range of ±1° to ±3°. However, the present application is not limited thereto.

[0174] As described above, the first actuator according to an embodiment can control the rotating plate 1141 and the mover 1130 to rotate in the first direction (X-axis direction) or the second direction (Y-axis direction) by electromagnetic forces between the driving magnets in the seat and the driving coils disposed in the housing, thereby minimizing the occurrence of eccentricity or tilting phenomena when OIS is implemented, and providing optimal optical characteristics. In addition, as described above, "Y-axis tilting" corresponds to rotation or tilting in the first direction (X-axis direction), and "X-axis tilting" corresponds to rotation or tilting in the second direction (Y-axis direction).

[0175] Figure 8 is a perspective view of a second camera actuator according to an embodiment, and Figure 9is an exploded perspective view of a second camera actuator according to an embodiment.

[0176] Reference Figure 8 and Figure 9 The second camera actuator 1200 can include a base 1210, a first lens assembly 1220, a second lens assembly 1230, a third lens assembly 1240, a guide portion 1250, a second driving portion 1260, an elastic portion 1270, and a second plate portion 1280.

[0177] In addition, as described above, the third direction (Z-axis direction) corresponds to the optical axis direction, and the second direction (Y-axis direction) corresponds to a direction from the second side wall to the first side wall and is perpendicular to the third direction (Z-axis direction). In addition, the first direction (X-axis direction) can be a direction perpendicular to the second direction (Y-axis direction) and the third direction (Z-axis direction).

[0178] In addition, the second camera actuator 1200 can include a base 1210 disposed on one side of the second camera actuator 1200, a first lens assembly 1220 disposed in the base 1210, a second lens assembly 1230 disposed in the first lens assembly 1220, a third lens assembly 1240 disposed at a front end or front of the base 1210, a guide portion 1250 disposed on a side surface (e.g., a first side wall) of the base 1210, a second driving portion 1260 for moving the first lens assembly 1220 and the second lens assembly 1230, an elastic portion 1270 for connecting the first lens assembly 1220 and the second lens assembly 1230 located inside the first lens assembly 1220, and a second plate portion 1280 disposed on an outer side of the guide portion 1250 and the base 1210 and electrically connected to the second driving portion 1260.

[0179] In addition, the second camera actuator 1200 can include a first lens group G1, a second lens group G2, and a third lens group G3, each of which is disposed on a corresponding lens assembly. Each of the first lens group G1, the second lens group G2, and the third lens group G3 can be formed of a single lens or a plurality of lenses. Further, the second camera actuator 1200 can further include an additional lens group (e.g., a fourth lens group) including a plurality of lenses or a single lens.

[0180] Hereinafter, detailed contents of the second camera actuator 1200 of the camera module according to an embodiment will be described with reference to the accompanying drawings.

[0181] Figure 10a is a perspective view of a base according to an embodiment, Figure 10b is a top view of a base according to an embodiment, Figure 10c is a view illustrating a first side wall of a base according to an embodiment, Figure 10d is a view illustrating a second side wall of a base according to an embodiment, Figure 10e is a rear view of a base according to an embodiment, and Figure 10f is a front view of a base according to an embodiment.

[0182] First, as described above, according to an embodiment, the first lens assembly, the second lens assembly, and the guide portion can be disposed in the base 1210. In addition, the third lens assembly can be disposed on one side surface of the base 1210.

[0183] Referring to Figures 10a to 10f , the base 1210 can have a cubic shape with a space therein. In an embodiment, the base 1210 can include a first side wall 1210a, a second side wall 1210b, a third side wall 1210c, and a fourth side wall 1210d. In addition, the base 1210 can include the plurality of side walls described above, a base upper surface 1210e, and a base lower surface 1210f.

[0184] First, the base 1210 can include the first side wall 1210a and the second side wall 1210b corresponding to the first side wall 1210a. The second side wall 1210b can be positioned to face the first side wall 1210a. In an embodiment, the first side wall 1210a can be disposed to be symmetrical with the second side wall 1210b with respect to a third direction (Z-axis direction).

[0185] In addition, the base 1210 can further include the third side wall 1210c and the fourth side wall 1210d disposed to correspond to each other between the first side wall 1210a and the second side wall 1210b.

[0186] The third side wall 1210c and the fourth side wall 1210d can be disposed to be perpendicular to the first side wall 1210a and the second side wall 1210b.

[0187] In addition, the third side wall 1210c can be positioned to correspond to the fourth side wall 1210d. In an embodiment, the third side wall 1210c can be disposed to be symmetrical with the fourth side wall 1210d with respect to a second direction (Y-axis direction).

[0188] The first side wall 1210a, the second side wall 1210b, the third side wall 1210c, and the fourth side wall 1210d can be integrally formed by injection molding or coupled to each other as separate components.

[0189] In addition, base protrusions 1210p1 to 1210p4 can be positioned on the fourth side wall 1210d of the base 1210. The base protrusions 1210p1 to 1210p4 can include a first base protrusion 1210p1, a second base protrusion 1210p2, a third base protrusion 1210p3, and a fourth base protrusion 1210p4, which are provided on the fourth side wall 1210d.

[0190] The first base protrusion to fourth base protrusion 1210p1, 1210p2, 1210p3, and 1210p4 can be coupled to the guide hole of the guide portion and the coupling hole of the third lens assembly, which will be described below. Accordingly, the base 1210, the guide portion, and the third lens assembly can be coupled to each other.

[0191] In addition, the fourth side wall 1210d can have an open shape and include a first opening 1210dh. The first lens assembly 1220 and the second lens assembly 1230 can be attached to or detached from the inner side of the base 1210 through the first opening 1210dh.

[0192] In addition, the base 1210 can include a side wall hole 1210ah positioned in the first side wall 1210a. In an embodiment, the side wall hole 1210ah can be positioned in at least one of the first side wall 1210a and the second side wall 1210b of the base 1210. A fourth coil to be described below can be disposed in the side wall hole 1210ah.

[0193] In addition, the base 1210 can include a base protrusion 1210ap protruding from the first side wall 1210a in a second direction (Y-axis direction). The base protrusion 1210ap can be coupled to a hole formed in a second plate portion to be described below to improve the coupling force between the base 1210 and the second plate portion.

[0194] In addition, the base 1210 can include a base upper surface 1210e and a base lower surface 1210f. The base upper surface 1210e can include a base upper hole 1210eh. In an embodiment, a base cover AC (see FIG. 19) can be easily coupled to the base 1210 through the base upper hole 1210eh. Figure 9) disposed on the upper surface 1210e of the base, the base cover AC functions to block light incident on the first lens group in the first lens assembly or the second lens group in the second lens assembly. In addition, the thickness of the first lens group or the second lens group can be increased through the base upper hole 1210eh, thereby improving the optical characteristics through the second camera actuator. Accordingly, the first lens group or the second lens group can have a D-cut shape, thus providing improved optical characteristics with the same diameter.

[0195] In addition, the third side wall 1210c can include a second opening 1210ch. Light passing through the first lens group and the second lens group can pass through the second opening 1210ch and can be incident on an image sensor positioned on a circuit board at the rear end of the second camera actuator. Alternatively, light passing through the first lens group and the second lens group can pass through the second opening 1210ch and can be incident on an image sensor positioned in the second camera actuator. In the present specification, the former will be described.

[0196] A pattern groove PT formed of a plurality of grooves can be positioned in the third side wall 1210c. The pattern groove PT can be positioned around the second opening 1210ch. Accordingly, the base 1210 can include the pattern groove PT positioned in the third side wall 1210c.

[0197] The base 1210 according to an embodiment can reduce the weight of the base 1210 through the pattern groove PT. In addition, since epoxy or an adhesive is applied on the pattern groove PT, the coupling force between the third side wall 1210c and the circuit board located at the rear end of the second camera actuator can be increased.

[0198] Figure 11a is a perspective view of a third lens assembly according to an embodiment, Figure 11b is a rear view of a third lens assembly according to an embodiment, and Figure 11c is a front view of a third lens assembly according to an embodiment.

[0199] Referring to Figures 11a to 11c The third lens assembly 1240 according to an embodiment can be positioned at or in front of the front end of the above-described base and be coupled to the base.

[0200] First, the third lens assembly 1240 can include a third lens hole 1240h positioned in the third lens assembly 1240. The third lens hole 1240h can be positioned at the center of the third lens assembly 1240. Also, the third lens hole 1240h can have a circular shape. A third lens group can be disposed in the third lens hole 1240h. The third lens group can be formed of a plurality of lenses or a single lens.

[0201] The third lens hole 1240h can at least partially overlap the first lens hole of the first lens assembly and the second lens hole of the second lens assembly, which will be described below, in the third direction (Z-axis direction). Accordingly, light reflected from the first camera actuator described above can pass through the first lens group to the third lens group and can be incident on the image sensor.

[0202] The third lens assembly 1240 can include a bottom surface 1240a and a top surface 1240b. The bottom surface 1240a of the third lens assembly 1240 can contact the fourth side wall of the base described above.

[0203] In detail, the third lens assembly 1240 can include a bottom hole 1240h1 positioned in the bottom surface 1240a. A plurality of bottom holes 1240h1 can be provided and positioned outside the third lens hole 1240h. For example, four bottom holes 1240h1 can be provided. Also, the bottom holes 1240h1 can be positioned adjacent to each corner of the bottom surface 1240a of the third lens assembly 1240.

[0204] Also, the third lens assembly 1240 can be coupled to the base by the base protrusion 1210p1. In an embodiment, the base protrusion of the base can pass through the bottom hole 1240h1 from the bottom surface 1240a of the third lens assembly 1240. Accordingly, the base and the third lens assembly can be coupled to each other.

[0205] The top surface 1240b of the third lens assembly 1240 can be positioned to correspond to the bottom surface 1240a. In an embodiment, the top surface 1240b of the third lens assembly 1240 can be positioned to face the bottom surface 1240a. Also, the top surface 1240b of the third lens assembly 1240 can be provided to be symmetrical to the bottom surface 1240a with respect to the first direction (X-axis direction) or the second direction (Y-axis direction).

[0206] In addition, the top surface 1240b of the third lens assembly 1240 can contact the first camera actuator described above. For example, an adhesive member such as epoxy can be applied on the top surface 1240b of the third lens assembly 1240 for coupling with the first camera actuator. In addition, the top surface 1240b of the third lens assembly 1240 can have various coupling structures (e.g., a protrusion 1240bp) for coupling with the first camera actuator.

[0207] Figure 12a is a perspective view of a first lens assembly according to an embodiment, Figure 12b is a front view of a first lens assembly according to an embodiment, Figure 12c is a rear view of a first lens assembly according to an embodiment, Figure 12d is a view showing a first lens side surface of a first lens assembly according to an embodiment, and Figure 12e is a view showing a second lens side surface of a first lens assembly according to an embodiment.

[0208] Referring to Figure 12a , the first lens assembly 1220 according to an embodiment can move along the guide portion in a third direction (Z-axis direction).

[0209] The first lens assembly 1220 can include a first lens side portion 1220a, a second lens side portion 1220b, and a third lens side portion 1220c.

[0210] The first lens side portion 1220a can be positioned to correspond to the second lens side portion 1220b. In an embodiment, the first lens side portion 1220a can be positioned to be symmetrical to the second lens side portion 1220b with respect to the third direction (Z-axis direction). In addition, the first lens side portion 1220a and the second lens side portion 1220b of the first lens assembly 1220 can be positioned to face each other.

[0211] In addition, the third lens side portion 1220c can be positioned between the first lens side portion 1220a and the second lens side portion 1220b. The third lens side portion 1220c can vertically contact the first lens side portion 1220a and the second lens side portion 1220b. In addition, the third lens side portion 1220c can be positioned at a front end or a rear end between the first lens side portion 1220a and the second lens side portion 1220b. In an embodiment, the third lens side portion 1220c positioned at the front end will be described.

[0212] In an embodiment, the first lens assembly 1220 can include a lens housing 1220ph. The lens housing 1220ph can be surrounded by the first to third lens sides 1220a, 1220b, and 1220c. Alternatively, the lens housing 1220ph can be positioned behind the third lens side 1220c between the first and second lens sides 1220a and 1220b. Alternatively, the lens housing 1220ph can overlap the first and second lens sides 1220a and 1220b in the second direction (Y-axis direction) and overlap the third lens side 1220c in the third direction (Z-axis). The second lens assembly, the second lens group, and the elastic portion can be positioned in the lens housing 1220ph.

[0213] In addition, the third lens side 1220c can include a first lens hole 1220h. The first lens group can be seated in the first lens hole 1220h. The first lens group can be formed of a plurality of lenses or a single lens. The first lens group can move in response to movement of the first lens assembly because the first lens group is coupled to the first lens assembly. For example, the first lens group can move with the first lens assembly in the optical axis or the third direction (Z-axis direction). Accordingly, the distance between the first lens group and the object or the distance between the first lens group and the image is greatly changed, and thus the magnification can be changed or the focal length can be adjusted.

[0214] The first lens assembly 1220 can be positioned in the above-described base 1210 and coupled to the base 1210. In this case, the first and second lens sides 1220a and 1220b of the first lens assembly 1220 can be coupled to the base to be movable with respect to the base.

[0215] Referring to Figure 12b and Figure 12c The first lens side 1220a can include a first assembly protrusion 1220ap protruding outward. In addition, the second lens side 1220b can include a second assembly protrusion 1220bp protruding outward. In the present specification, the inner side can face the optical path, and the outer side can be opposite to the inner side.

[0216] The first and second assembly protrusions 1220ap and 1220bp can be seated on the inner surface of the base. Movement of the first lens assembly 1220 and the base in the second direction (Y-axis direction) can be blocked by the first and second assembly protrusions 1220ap and 1220bp, and the first lens assembly 1220 and the base can be coupled to each other.

[0217] Referring to Figure 12d and Figure 12e The first lens side portion 1220a can include a first recess R1 positioned on the outer surface 1220ao. The first recess R1 can be positioned on the outer surface 1220ao of the first lens side portion 1220a, and at least one first recess R1 can be provided. The number of the first recess R1 can correspond to the number of the first ball. The outer surface 1220ao of the first lens side portion 1220a can be used interchangeably with "first lens side surface". Alternatively, the first lens side surface can correspond to the upper side portion of the first lens assembly.

[0218] In addition, in the present specification, a case in which four first recesses R1 are described. Two first recesses R1 can be positioned in each of the upper and lower regions of the outer surface 1220ao of the first lens side portion 1220a. In the upper region of the outer surface 1220ao of the first lens side portion 1220a, the two first recesses R1 can overlap each other in the third direction (Z-axis direction). In addition, in the lower region of the outer surface 1220ao of the first lens side portion 1220a, the two first recesses R1 can overlap each other in the third direction (Z-axis direction).

[0219] In addition, the first recess R1 can overlap each other in the first direction (X-axis direction) on the outer surface 1220a of the first lens side portion 1220a. In other words, a plurality of first recesses R1 can overlap each other in the first direction (X-axis direction) or in the third direction (Z-axis direction). Accordingly, even when the first ball is seated in the first recess R1 and the first lens assembly is moved by the rotation of the first ball, the force can be uniformly applied to the first lens assembly. Accordingly, it is possible to improve the reliability of the first lens assembly. In addition, the first lens assembly can be accurately moved.

[0220] The second lens side portion 1220b can include a second recess R2 positioned on the outer surface 1220bo. The second recess R2 is positioned in the outer surface 1220bo of the second lens side portion 1220b, and at least one second recess R2 can be provided. The number of the second recess R2 can correspond to the number of the second ball. In addition, the outer surface 1220bo of the second lens side portion 1220b can be used interchangeably with "second lens side surface". In addition, the second lens side surface can correspond to the lower side portion of the first lens assembly.

[0221] In the present specification, a case in which four second recesses R2 will be described. Two second recesses R2 can be positioned in each of the upper region and the lower region of the outer surface 1220bo of the second lens side portion 1220b. In the upper region of the outer surface 1220bo of the second lens side portion 1220b, the two second recesses R2 can overlap each other in the third direction (Z-axis direction). Also, in the lower region of the outer surface 1220bo of the second lens side portion 1220b, the two second recesses R2 can overlap each other in the third direction (Z-axis direction).

[0222] Also, the second recesses R2 can overlap each other in the first direction (X-axis direction) on the outer surface 1220bo of the second lens side portion 1220b.

[0223] Further, the second recesses R2 can be positioned to correspond to the first recesses R1. Thus, the second recesses R2 and the first recesses R1 can be positioned to overlap each other in the second direction (Y-axis direction). Thus, force can be uniformly applied to the first lens assembly 1220 by the first and second balls.

[0224] Also, a plurality of second recesses R2 can overlap each other in the first direction (X-axis direction) or the third direction (Z-axis direction). Thus, even when the second ball is seated in the second recess R2 and the second lens assembly is moved by rotation of the second ball, force can be uniformly applied to the second lens assembly. Thus, the reliability of the second lens assembly can be improved. Also, the second lens assembly can be accurately moved.

[0225] Further, grooves can be formed in the outer surface 1220ao of the first lens side portion 1220a and the outer surface 1220bo of the second lens side portion 1220b. Also, the weight of the first lens assembly can be reduced by the above-described grooves, and an epoxy resin or the like is applied on the grooves, thus enabling easy coupling with the first yoke or the second yoke to be described below.

[0226] Also, a second connecting member extending in the third direction (Z-axis direction) can be positioned in the first recess R1 of the first lens side portion 1220a. Thus, the second connecting member can be exposed through the first recess R1 and can contact the first ball seated in the first recess R1. Also, the second connecting member can be disposed between the first recess and the first ball. A detailed description will be given below.

[0227] Figure 13a is a perspective view of a guide portion according to an embodiment, Figure 13b is a perspective view of a main body of a guide portion according to an embodiment, Figure 13cis a view showing an outer surface of a main body of a guide portion according to an embodiment, Figure 13d is a view showing an inner surface of a main body of a guide portion according to an embodiment, Figure 13e is a front view of a main body of a guide portion according to an embodiment, Figure 13f is a rear view of a main body of a guide portion according to an embodiment, Figure 13g is a perspective view of a first connecting member of a guide portion according to an embodiment, Figure 13h is a perspective view of a second connecting member of a guide portion according to an embodiment, and Figure 13i is a view showing an inner side of a guide portion according to an embodiment.

[0228] Referring to Figure 13a , the first lens assembly and the second lens assembly can move along a guide portion 1250 according to an embodiment.

[0229] The guide portion 1250 according to an embodiment can include a main body 1251 having a guide rail, a first connecting member 1252 positioned on the guide rail, and a second connecting member 1253 disposed on a first lens side portion.

[0230] The guide portion 1250 can be positioned adjacent to at least one of a first side wall and a second side wall of the base. Hereinafter, the guide portion 1250 positioned adjacent to the first side wall of the base will be described.

[0231] The guide portion 1250 can be positioned between the first lens assembly and the base. In other words, the guide portion 1250 can be positioned inside the base and outside the first lens assembly. In an embodiment, the guide portion 1250 can be positioned between the first side wall of the base and the first lens side portion of the first lens assembly. Accordingly, an inner surface of the second side wall of the base can contact the second ball. In addition, the first lens assembly can move in the third direction (Z-axis direction) within the base by rotation of the second ball.

[0232] In addition, the main body 1251 can include a guide hole Gh (see Figure 13b ), and can be coupled to the base through the guide hole Gh. As described above, the base protrusion can pass through the guide hole.

[0233] In addition, the body 1251 can include a single rail or a plurality of rails. The rail can include a first rail positioned on an upper portion of the rail and a second rail positioned on a lower portion of the rail. In addition, first balls can be positioned on the first rail and the second rail. The first rail and the second rail can extend in a third direction (Z-axis direction). For example, the first rail and the second rail can be positioned parallel to the third direction (Z-axis direction). With this configuration, the first lens assembly can move within the base in the third direction (Z-axis direction) by rotation of the first balls.

[0234] A first connecting member 1252 can be positioned on the first rail and the second rail. For example, a single first connecting member 1252 or a plurality of first connecting members 1252 can be provided corresponding to the number or position of the rails of the body 1251. In addition, the first connecting member 1252 can be in contact with the first balls on the first rail and the second rail.

[0235] The first connecting member 1252 can be made of an electrically conductive material. Also, the first balls can be made of an electrically conductive material, and the second connecting member can be made of an electrically conductive material. Accordingly, the first connecting member 1252, the first balls, and the second connecting member 1253 can be electrically connected.

[0236] The second connecting member 1253 can be positioned corresponding to the first rail and the second rail. In addition, the second connecting member 1253 can be positioned corresponding to the first connecting member 1252, and a single second connecting member 1253 or a plurality of second connecting members 1253 can be provided.

[0237] The second connecting member 1253 can be positioned on the first lens side of the above-described first lens assembly. More specifically, the second connecting member 1253 can be positioned to be exposed through a first recess of the first lens side. In other words, the second connecting member 1253 can be positioned in the first recess so as to be exposed through the first recess. Accordingly, the second connecting member 1253 can be in contact with the first balls.

[0238] In addition, the second connecting member 1253 can further include an area exposed in an area other than the first recess. For example, the second connecting member 1253 can be partially exposed at a rear end thereof. Accordingly, the second connecting member 1253 can be electrically connected to a first elastic portion to be described below.

[0239] Referring to Figures 13b to 13f , the body 1251 can be provided between the first lens assembly 1220 and the first side wall of the base 1210.

[0240] According to an embodiment, since the main body 1251 precisely numerically controlled in the base has been coupled to the state of the base to drive the lens assembly, a technical effect capable of improving driving force at the time of zoom, reducing power consumption, and improving control characteristics by reducing frictional resistance by reducing frictional torque can be generated.

[0241] Accordingly, according to an embodiment, there can be a complex technical effect that can prevent phenomena such as lens decentration, lens tilt, or misalignment between the center axes of the lens group and the image sensor from occurring, even while minimizing frictional torque at the time of zoom, thus significantly improving image quality or resolution.

[0242] The main body 1251 can include a single guide rail RL or a plurality of guide rails RL. In an embodiment, the plurality of guide rails RL can include a first guide rail RL1 and a second guide rail RL2. The first guide rail RL1 can be positioned above the second guide rail RL2. In other words, since the main body 1251 has two guide rails, even when one guide rail is misaligned, accuracy can be easily ensured by the other guide rail.

[0243] In addition, the first guide rail RL1 and the second guide rail RL2 can have the same shape or different shapes. For example, the shape of the first guide rail RL1 can be V-shaped. In addition, the shape of the second guide rail RL2 can be L-shaped, but the present application is not limited thereto.

[0244] Further, the guide rail positioned on the second side wall of the base can also have the above-described V-shape or L-shape. In addition, the guide rail positioned on the second side wall of the base can have the same shape as the first guide rail and the second guide rail in the diagonal direction. Alternatively, the corresponding guide rail in the second direction can have the same shape. Through this configuration, even when there is a problem of frictional force of the ball (e.g., damage) on either guide rail, driving force can be easily ensured since smooth rolling operation is performed on the other guide rail.

[0245] In addition, the second camera actuator according to the present embodiment and the camera module including the same can solve the problem of lens decentration or tilt while zooming, so that the alignment and the interval between the plurality of lens groups are well set to prevent the occurrence of changes in the angle of view or defocus, thereby significantly improving image quality or resolution.

[0246] In addition, since the main body 1251 includes the first guide rail RL1 and the second guide rail RL2, and the first guide rail RL1 and the second guide rail RL2 guide the first lens assembly 1220, the accuracy of alignment can be improved.

[0247] In addition, according to an embodiment, since the second camera actuator has two guide rails for the first lens assembly, a wide interval between the balls can be secured, thereby improving a driving force.

[0248] In addition, the main body 1251 can include a guide protrusion 1251p extending in a lateral direction perpendicular to an extension direction of the first guide rail RL1.

[0249] A plurality of guide protrusions 1251p can be provided. The guide protrusions 1251p can be seated in grooves positioned in the third side wall of the base. Accordingly, the main body 1251 can be easily coupled to the base.

[0250] In addition, the main body 1251 can be easily coupled to the base through the guide hole Gh. In other words, since the base protrusion positioned on the fourth side wall of the base passes through the guide hole Gh, a coupling force between the base and the guide can be further improved.

[0251] An outer surface 1251o of the main body 1251 can form contact with the plate portion. In addition, the main body 1251 can include a main body hole 1251h positioned in the outer surface 1251o of the main body 1251. The fourth coil can be positioned in the main body hole 1251h. The fourth coil can generate an electrical interaction with the facing fourth magnet, and ultimately move the first lens assembly in the third direction (Z-axis direction) by an electromagnetic force.

[0252] The first guide rail RL1 and the second guide rail RL2 described above can be positioned on an inner surface 1251i of the main body 1251.

[0253] In addition, a first connection member can be seated on the inner surface 1251i of the main body 1251. As described above, the first connection member can be positioned on the inner surface 1251i of the main body 1251, particularly, on the first guide rail RL1 and the second guide rail RL2. Accordingly, the first connection member can be positioned between the first ball and the main body 1251, and can form contact with the first ball to be electrically connected to the first ball.

[0254] Reference Figure 13g A single first connection member 1252 or a plurality of first connection members 1252 can be provided. In an embodiment, the first connection member 1252 can include a 1-1 connection member 1252a and a 1-2 connection member 1252b.

[0255] In addition, the first connecting member 1252 can include a base member 1252BS and an extension 1252P. The base member 1252BS can extend in a third direction (Z-axis direction). The base member 1252BS can be positioned on a guide rail.

[0256] In an embodiment, the 1-1 connecting member 1252a can include a first base member 1252aa, and the 1-2 connecting member 1252b can include a second base member 1252ba. In addition, the base member 1252BS can include the first base member 1252aa and the second base member 1252ba.

[0257] In addition, the extension 1252P can extend outward from one end of the base member 1252BS. In an embodiment, the extension 1252P can extend to the outside of the main body. In other words, the extension 1252P can extend from one end of the base member 1252BS in a second direction (Y-axis direction). With this configuration, the first connecting member that forms contact with the first ball can be easily electrically connected to the second plate portion outside the main body.

[0258] In an embodiment, the extension 1252P can include a first extension portion 1252ap and a second extension portion 1252bp. In addition, the 1-1 connecting member 1252a can include the first extension portion 1252ap, and the 1-2 connecting member 1252b can include the second extension portion 1252bp.

[0259] In addition, the extension 1252P can extend in the second direction (Y-axis direction) and can be bent. Accordingly, the extension 1252P can extend toward an adjacent first connecting member in some regions.

[0260] Reference Figure 13h The second connecting member 1253 according to an embodiment can extend in a third direction (Z-axis direction). As described above, the second connecting member 1253 can be positioned on a first lens side portion of the first lens assembly.

[0261] In addition, the second connecting member 1253 can be partially exposed through the first recess, and can further have another exposed area at the rear end thereof. Accordingly, the outer surface 1253o of the second connecting member 1253 can be exposed through the first recess, and can come into contact with the first ball disposed in the first recess to be electrically connected to the first ball. In addition, the inner surface 1253i of the second connecting member 1253 can be positioned in the first lens side of the first lens assembly, and be partially exposed. In an embodiment, the inner surface 1253i of the second connecting member 1253 can be exposed at the rear end thereof. The inner surface 1253i of the second connecting member 1253 can be electrically connected to the elastic part to be described below. Accordingly, the second connecting member 1253 can be electrically connected to the first ball through the outer surface 1253o, and be electrically connected to the elastic part through the inner surface 1253i.

[0262] A single second connecting member 1253 or a plurality of second connecting members 1253 can be provided. In an embodiment, the number of the second connecting members 1253 can correspond to the number of the guide rails or the number of the first connecting members. In an embodiment, the second connecting members 1253 can include a 2-1 connecting member 1253a and a 2-2 connecting member 1253b.

[0263] The 2-1 connecting member 1253a can be positioned to correspond to and be electrically connected to the 1-1 connecting member 1252a. In addition, the 2-2 connecting member 1253b can be positioned to correspond to and be electrically connected to the 1-2 connecting member 1252b.

[0264] Referring to Figure 13i The first connecting member 1252 can be positioned on the guide rail RL positioned on the inner surface 1251i of the main body 1251 of the guide portion 1250 according to an embodiment. In an embodiment, the first connecting member 1252 can at least partially overlap the guide rail RL in the second direction (Y-axis direction).

[0265] In addition, the first connecting member 1252 and the second connecting member 1253 can extend in the third direction (Z-axis direction). In addition, the second connecting member 1253 can be positioned on the guide rail RL and the first connecting member 1252.

[0266] The length of the second connecting member 1253 in the third direction (Z-axis direction) can be greater than the length of the first connecting member 1252 in the third direction (Z-axis direction). Accordingly, the magnification can be changed by moving the second connecting member 1253 disposed on the first lens assembly in the third direction (Z-axis direction) on the first connecting member 1252 or the guide rail RL.

[0267] Figure 14 is a perspective view of a second driving part and a second lens assembly according to an embodiment.

[0268] Referring to Figure 14 The second driving part 1260 according to an embodiment can include a first lens driving part LG1, a second lens driving part LG2, a third Hall sensor 1263, a first yoke 1264a, and a second yoke 1264b. The second driving part 1260 according to an embodiment can move the first lens assembly and the second lens assembly in a third direction (Z-axis direction).

[0269] The first lens driving part LG1 can include a fourth coil 1261a and a fourth magnet 1262a. The fourth coil 1261a can be positioned in the guide part described above. In addition, the fourth coil 1261a can be electrically connected to the adjacent second plate part 1280.

[0270] The fourth magnet 1262a can be positioned to face the fourth coil 1261a. Accordingly, the first lens assembly can be moved by electromagnetic interaction between the fourth coil 1261a and the fourth magnet 1262a.

[0271] The fourth magnet 1262a can be disposed on the first lens side of the first lens assembly. In this case, the first yoke 1264a can be disposed on the first lens side of the first lens assembly and coupled to the first lens side. More specifically, the first yoke 1264a can be disposed on the first lens side surface. In addition, the first yoke 1264a can be coupled to the fourth magnet 1262a by a magnetic force or the like. Accordingly, the fourth magnet 1262a can be coupled to the first lens assembly and moved by a current flowing through the fourth coil 1261a.

[0272] More specifically, a current ID1 can flow through the fourth coil 1261a in a first direction (X-axis direction). In addition, a magnetic force ED1 can be applied by the fourth magnet 1262a to the fourth coil 1261a in a direction opposite to the second direction (Y-axis direction). Accordingly, an electromagnetic force can be applied to the fourth coil 1261a in a direction opposite to the third direction (Z-axis direction). Accordingly, the first lens assembly on which the fourth magnet 1262a is disposed can be moved in the third direction by rotation of the first and second balls.

[0273] In other words, the first lens driving part LG1 can move the first lens assembly in the third direction (Z-axis direction). Also, since the second lens assembly is positioned in the first lens assembly, the second lens assembly can move in the third direction (Z-axis direction) together with the first lens assembly. Accordingly, the first lens driving part can move the first lens assembly and the second lens assembly by the same distance.

[0274] The second lens driving part LG2 can include a fifth coil 1261b and a fifth magnet 1262b. The fifth coil 1261b can be positioned on an outer surface of the second lens assembly 1230. In an embodiment, the fifth coil 1261b can surround the second lens assembly.

[0275] Also, the second lens assembly 1230 can include a second lens hole 1230h. The second lens group can be seated in the second lens hole 1230h. The second lens group can be formed of at least one lens. Also, as the second lens assembly 1230 moves, the second lens group can also move. Accordingly, the second camera actuator according to an embodiment can perform focusing and magnification change.

[0276] Also, the fifth coil 1261b can be electrically connected to the above-described second connection member. Specifically, the fifth coil 1261b can be electrically connected to the elastic portion adjacent to the fifth coil 1261b. Also, the first elastic member of the elastic portion can be in contact with the second connection member and can be electrically connected to the second connection member. Also, the second connection member can be electrically connected to the second plate portion through the first ball and the first connection member. Accordingly, current can be applied to the fifth coil 1261b from the second plate portion, and the amount of current can also be controlled.

[0277] The fifth magnet 1262b can be positioned adjacent to the fifth coil 1261b. The fifth magnet 1262b can be positioned to correspond to the fourth magnet 1262a. In other words, the fifth magnet 1262b can be positioned to be symmetrical to the fourth magnet 1262a with respect to the third direction (Z-axis direction). Accordingly, the force received by the weight of the fourth magnet 1262a and the fifth magnet 1262b in the first lens assembly can be uniform.

[0278] Alternatively, the fifth coil 1261b can be positioned to be misaligned with the fourth coil 1261a. For example, the fifth coil 1261b can be positioned to be perpendicular to the fourth coil 1261a. Also, the fifth coil 1261b can be positioned between or inside the fourth magnet 1262a and the fifth magnet 1262b. Also, the fifth coil 1261b can be positioned to be inward from the fourth coil 1261a.

[0279] The second lens assembly can be moved by electromagnetic interaction between the fifth coil 1261b and the fifth magnet 1262b.

[0280] The fifth magnet 1262b can be disposed on the second lens side of the first lens assembly. In this case, the second yoke 1264b can be disposed on the second lens side of the first lens assembly and coupled to the second lens side. Also, the second yoke 1264b can be coupled to the fifth magnet 1262b by a magnetic force or the like. Accordingly, the fifth magnet 1262b can be coupled to the first lens assembly and moved by the first lens driving part, and the second lens assembly can be moved by the current flowing through the fifth coil 1261b and the magnetic force of the fifth magnet 1262b.

[0281] More specifically, the current ID2 can flow in the first direction (X-axis direction) through the fifth coil 1261b. Also, the magnetic force ED2 can be applied to the fifth coil 1261b in the direction opposite to the second direction (Y-axis direction) by the fifth magnet 1262b. Accordingly, the electromagnetic force can be applied to the fifth coil 1261b in the direction opposite to the third direction (Z-axis direction). Accordingly, the second lens assembly coupled to the fifth coil 1261b can be moved in the third direction (Z-axis direction) with respect to the first lens assembly in a state of being coupled to the first lens assembly by the elastic part.

[0282] In other words, the second lens driving part LG2 can move the second lens assembly in the third direction (Z-axis direction). Accordingly, the second lens driving part moves only the second lens assembly without moving the first lens assembly.

[0283] Figure 15 is a perspective view of an elastic part according to an embodiment.

[0284] Referring to Figure 15 The elastic part 170 according to an embodiment can include a first elastic member 1271 and a second elastic member 1272.

[0285] The first elastic member 1271 can be positioned below the second lens assembly. Also, the second elastic member 1272 can be positioned above the second lens assembly.

[0286] The first elastic member 1271 and the second elastic member 1272 can be coupled to the second lens assembly and the first lens assembly, respectively. Accordingly, the first elastic member 1271 and the second elastic member 1272 can provide the elastic force required for the movement of the second lens assembly in the first lens assembly with respect to the first lens assembly.

[0287] In addition, the first elastic member 1271 can be made of an electrically conductive material. The first elastic member 1271 can include a 1-1 elastic region 1271a and a 1-2 elastic region 1271b. The 1-1 elastic region 1271a and the 1-2 elastic region 1271b can be electrically separated from each other. The 1-1 elastic region 1271a can be positioned above the 1-2 elastic region 1271b. In other words, the 1-2 elastic region 1271b can be positioned below the 1-1 elastic region 1271a.

[0288] Accordingly, the 1-1 elastic region 1271a can be in contact with the 2-1 connecting member disposed thereon, and can be electrically connected to the 2-1 connecting member. In addition, the 1-2 elastic region 1271b can be in contact with the 2-2 connecting member disposed thereunder, and can be electrically connected to the 2-2 connecting member.

[0289] In addition, the 1-1 elastic region 1271a and the 1-2 elastic region 1271b can be electrically connected to the fifth coil. In addition, power pieces having different polarities can be applied to the 1-1 elastic region 1271a and the 1-2 elastic region 1271b.

[0290] In addition, the 1-1 elastic region 1271a and the 1-2 elastic region 1271b can be symmetrically disposed with respect to the second direction (Y-axis direction). Accordingly, elastic force is uniformly provided to the second lens assembly, and thus the second lens assembly can be accurately moved.

[0291] In addition, the second elastic member 1272 can be divided into two regions like the first elastic member 1271. In addition, as a modified example, like the first elastic member, the second elastic member 1272 can be electrically connected to the coil and electrically connected to the second connecting member to apply electric current to the fifth coil.

[0292] Figure 16 is a perspective view of a second plate portion according to an embodiment.

[0293] Referring to Figure 16 The second plate portion 1280 according to an embodiment can include a 2-1 plate portion 1281 and a 2-2 plate portion 1282. The 2-1 plate portion 1281 can be positioned below the base, and coupled to the base.

[0294] In addition, the 2-2 plate portion 1282 can be positioned on a side of the base. In particular, the 2-2 plate portion 1282 can be positioned on a first side wall of the base. Accordingly, the 2-2 plate portion 1282 can be positioned adjacent to a fourth coil positioned adjacent to the first side wall, and thus the 2-2 plate portion 1282 is easily electrically connected to the fourth coil.

[0295] Furthermore, the second plate portion 1280 may further include a fixed substrate st positioned thereunder. Therefore, even when the second plate portion 1280 is made of a flexible material, the second plate portion 1280 can be connected to the base while maintaining rigidity via the fixed substrate st.

[0296] The second plate portion 1280 can be positioned on the side of the guide portion 1250. The second plate portion 1280 can be electrically connected to the first lens drive portion and the second lens drive portion. For example, the second plate portion 1280 can be coupled to the fourth coil and the second connecting member by surface mount technology (SMT). However, the present invention is not limited to this method.

[0297] The second board portion 1280 may include a circuit board having a circuit pattern to be electrically connected, such as a rigid printed circuit board (PCB), a flexible PCB, or a rigid-flex PCB. However, the invention is not limited to this type.

[0298] Figure 17 It is along Figure 8 A cross-sectional view of the D-D' line in the diagram. Figure 18 This is a rear view showing some components of the second camera actuator according to an embodiment. Figure 19 This is a view showing the rear side of the second camera actuator according to an embodiment, and Figure 20 This is a perspective view of the guide section according to an embodiment.

[0299] refer to Figures 17 to 20 The first ball B1 and the second ball B2 can be positioned on the first lens side surface and the second lens side surface of the first lens assembly 1220, respectively. Therefore, the first ball B1 and the second ball B2 can be positioned facing each other. In an embodiment, the second ball B2 can be disposed between the second lens side surface of the first lens assembly 1220 and the second sidewall of the base.

[0300] Furthermore, the first ball B1 can be disposed in the guide rail RL of the guide portion 1250. Additionally, the first ball B1 can be positioned between the guide portion 1250 and the first lens assembly 1220. Therefore, the first ball B1 can move along the guide rail RL of the guide portion in the third direction (Z-axis direction).

[0301] More specifically, a portion of the first ball B1 can form contact with the first connection member 1252 positioned on the guide rail RL. In an embodiment, the contact between the first ball B1 and the first connection member 1252 can be maintained even when the first lens assembly 1220 moves along the guide rail RL. However, the contact area of the first ball B1 with the first connection member 1252 can change by the movement of the first lens assembly 1220. In addition, another portion of the first ball B1 can form contact with the second connection member 1253 positioned in the first recess R1.

[0302] In other words, the first ball B1 can form contact with the first connection member 1252 and the second connection member 1253 between the first connection member 1252 and the second connection member 1253. According to an embodiment, the contact between the first ball B1 and the first connection member 1252 and the contact between the first ball B1 and the second connection member 1253 can be maintained even when the first ball B1 rotates and the first lens assembly 1220 moves in the third direction (Z-axis direction).

[0303] The second connection member 1253 can be positioned on the first guide rail RL1 and the second guide rail RL2 of the main body 1251.

[0304] In addition, the fourth coil 1261a can be disposed adjacent to the fourth magnet 1262a. Unlike the fourth coil, the fifth coil 1261b can be positioned between the fourth magnet 1262a and the fifth magnet 1262b. In an embodiment, the fifth coil 1261b can be positioned at the middle between the fourth magnet 1262a and the fifth magnet 1262b. Accordingly, the fifth coil 1261b can receive uniform magnetic force from each of the fourth magnet 1262a and the fifth magnet 1262b. In addition, the fourth magnet 1262a and the fifth magnet 1262b can have the same polarity in the second direction (Y-axis direction). Accordingly, the movement of the second lens assembly 1230 by the second lens driving part can be accurately performed.

[0305] In addition, as described above, the second connection member 1253 can include an exposed region ER on an inner surface thereof. The exposed region ER can be electrically connected to the first elastic member 1271 by the bonding member PB. In addition, the exposed region ER can be positioned at a rear end of the first elastic member 1271.

[0306] In other words, the second connection member 1253 can be positioned in the first recess R1 overlapping in the second direction (Y-axis direction) and can extend along an area between adjacent first recesses R1. Furthermore, the second connection member 1253 can further extend in the third direction (Z-axis direction) from the first recess R1.

[0307] In addition, the second connection member 1253 can partially overlap the first recess R1 in the second direction (Y-axis direction). In addition, the second connection member 1253 can partially overlap the first elastic member 1271 in the second direction (Y-axis direction). Thus, the first elastic member 1271 and the second connection member 1253 can contact each other and can be electrically connected to each other.

[0308] Thus, in order to supply a control signal for controlling a second lens driving portion in a second camera actuator according to an embodiment to the fifth coil 1261b, a current IP from the second board portion 1280 to the fifth coil 1261b can be formed via the first connection member 1252, the second connection member 1253, the first ball B1, and the first elastic member 1271.

[0309] Figure 21 is a view showing movement by a first lens driving portion according to an embodiment, Figure 22 is a view showing movement by a second lens driving portion according to an embodiment.

[0310] Reference Figure 21 In an embodiment, the first lens assembly 1220 can be moved in the third direction (Z-axis direction) by the first lens driving portion NG1 to implement zoom or focus.

[0311] In an embodiment, the third electromagnetic forces F3A and F3B generated by the first lens driving portion NG1 can move the first lens assembly 1220 in the third direction (Z-axis direction).

[0312] In addition, as the first lens assembly 1220 moves in the third direction (Z-axis direction), the second lens assembly 1230 can also move together with the first lens assembly 1220. In other words, the first lens assembly 1220 and the second lens assembly 1230 can be simultaneously moved in the third direction (Z-axis direction) in the base by the same distance by the third electromagnetic forces F3A and F3B generated by the first lens driving portion NG1.

[0313] Reference Figure 22 In an embodiment, the second lens assembly 1230 can be moved in the third direction (Z-axis direction) by the second lens driving portion NG2 to implement zoom or focus.

[0314] In an embodiment, fourth electromagnetic forces F4A and F4B generated by the second lens driving portion NG2 can move the second lens assembly 1230 in the third direction (Z-axis direction) with respect to the first lens assembly 1220. At this time, when the third electromagnetic force is not generated, the first lens assembly 1220 can not move in the third direction (Z-axis direction). In other words, the second lens assembly 1230 can be independently moved in the third direction (Z-axis direction) with respect to the first lens assembly 1220 in the base by the fourth electromagnetic forces F4A and F4B generated by the second lens driving portion NG2.

[0315] Figure 23 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0316] Reference Figure 23 The mobile terminal 1500 in an embodiment can include a camera module 1000, a flash module 1530, and an AF device 1510 disposed on a rear surface thereof.

[0317] The camera module 1000 can include an image capturing function and an AF function. For example, the camera module 1000 can include an AF function using an image.

[0318] The camera module 1000 processes an image frame of a still image or a moving image obtained by an image sensor in a capture mode or a video call mode.

[0319] The processed image frame can be displayed on a predetermined display portion and stored in a memory. A camera (not shown) can also be disposed on a front surface of a main body of the mobile terminal.

[0320] For example, the camera module 1000 can include a first camera module 1000 and a second camera module 1000, and OIS can be implemented by the first camera module 1000 together with AF or zoom functions.

[0321] The flash module 1530 can include a light emission device for emitting light therein. The flash module 1530 can be operated by a camera operation of the mobile terminal or a user's control.

[0322] The AF device 1510 can include one package of a surface light emission laser device as a light emission portion.

[0323] The AF device 1510 can include an AF function using a laser. The AF device 1510 can be mainly used in a condition in which an AF function using an image of the camera module 1000 is deteriorated, for example, in an environment in which an object approaches 10 m or less or in a dark environment.

[0324] The AF device 1510 can include a light emitting portion including a vertical cavity surface emitting laser (VCSEL) semiconductor device and a light receiving portion for converting light energy into electrical energy such as a photodiode.

[0325] Figure 24 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0326] For example, Figure 24 is an external view of a vehicle including a vehicle driver assistance device to which a camera module 1000 according to an embodiment is applied.

[0327] Referring to Figure 24 The vehicle 700 in the embodiment can include wheels 13FL and 13FR rotated by a power source and a predetermined sensor. The sensor can be a camera sensor 2000, but the present application is not limited thereto.

[0328] The camera sensor 2000 can be a camera sensor to which a camera module 1000 according to an embodiment is applied. The vehicle 700 in the embodiment can acquire image information through the camera sensor 2000 for capturing a front image or a surrounding image, determine a situation in which a lane line is not recognized using the image information, and generate a virtual lane line when the lane line is not recognized.

[0329] For example, the camera sensor 2000 can acquire a front image by capturing a view in front of the vehicle 700, and a processor (not shown) can acquire image information by analyzing objects included in the front image.

[0330] For example, when objects such as a divider corresponding to a lane line, a curb or a street tree, a neighboring vehicle, a traveling obstacle, and an indirect road marking are captured in an image captured by the camera sensor 2000, the processor can detect the objects and include the detected objects in the image information. At this time, the processor can further supplement the image information by acquiring distance information of the objects detected via the camera sensor 2000.

[0331] The image information can be information about objects captured in an image. The camera sensor 2000 can include an image sensor and an image processing module.

[0332] The camera sensor 2000 can process a still image or a moving image obtained by an image sensor (for example, a complementary metal-oxide semiconductor (CMOS) or a charge-coupled device (CCD)).

[0333] The image processing module can process a still image or a moving image acquired by the image sensor to extract necessary information, and transmit the extracted information to the processor.

[0334] At this time, the camera sensor 2000 can 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 the present application is not limited thereto.

[0335] While the above has mainly described the embodiments, the embodiments are merely illustrative and do not limit the present application, and it will be understood by those skilled in the art to which the present application pertains that there can be various modifications and applications not exemplified above without departing from the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments can be implemented by modification. In addition, differences related to these modifications and applications should be interpreted as being included in the scope of the present application defined in the appended claims.

Claims

1. A camera actuator, comprising: The base includes a first sidewall and a second sidewall, the second sidewall corresponding to the first sidewall; A guide portion, wherein the guide portion is configured to be adjacent to at least one of the first sidewall and the second sidewall; A first lens assembly and a second lens assembly, wherein the second lens assembly is movable relative to the first lens assembly within the first lens assembly; A drive unit configured to move the first lens assembly and the second lens assembly; as well as A first ball bearing and a second ball bearing, wherein the first ball bearing is disposed on the upper side of the first lens assembly, and the second ball bearing is disposed on the lower side of the first lens assembly. The first lens assembly moves along the guide portion via the first ball and the second ball. The driving unit includes: A first lens driving unit, the first lens driving unit including a first magnet and a first coil positioned in the guide portion; and The second lens driving unit includes a second coil and a second magnet. The second coil is positioned inside the first lens assembly, and the second magnet is positioned between the second sidewall and the first lens assembly.

2. The camera actuator according to claim 1, wherein, The first ball is disposed between the first lens assembly and the guide portion, and The second ball is disposed between the first lens assembly and the second sidewall.

3. The camera actuator according to claim 2, wherein, The first lens assembly includes: The first recess, in which the first ball is disposed; and The second recess, in which the second ball is disposed.

4. The camera actuator according to claim 3, wherein, The guide section includes: The main body includes a guide rail; A first connecting member, the first connecting member being positioned on the guide rail; and A second connecting member is disposed between the first recess and the first ball and extends in the optical axis direction.

5. The camera actuator according to claim 4, wherein, The first ball is disposed between the first connecting member and the second connecting member, and is in at least partial contact with the first connecting member and the second connecting member.

6. The camera actuator according to claim 4, wherein, The first connecting member includes an extension that extends to the outside of the body.

7. The camera actuator of claim 6, further comprising a plate portion disposed outside the guide portion. in, The extension is electrically connected to the plate portion.

8. The camera actuator according to claim 4, wherein, The first ball is made of a conductive material.

9. The camera actuator of claim 4, further comprising an elastic portion configured to connect the second lens assembly and the first lens assembly. in, The second coil is electrically connected to the first connecting member, the first ball, the second connecting member, and the elastic part.

10. The camera actuator according to claim 4, wherein, The shape of the first connecting member corresponds to the shape of the guide rail.

11. The camera actuator according to claim 1, wherein, The first lens assembly is disposed in the base.

12. The camera actuator according to claim 1, wherein, The second coil is positioned inside the first coil.

13. The camera actuator according to claim 12, wherein, The first magnet is positioned to correspond to the second magnet in the optical axis direction, and The first coil is positioned so that it is not aligned with the second coil in the direction of the optical axis.

14. The camera actuator according to claim 1, wherein, The second coil surrounds the second lens assembly.

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