KR20230099411A - Camera actuator, lens moving device and camera device comprising the same - Google Patents

Abstract

An embodiment of the present invention is a housing; a first bobbin moving in an optical axis direction based on the housing; and a first driving unit for moving the first bobbin, wherein the first driving unit includes a first coil; and a first magnet facing the first coil, including a first yoke coupled to the first bobbin and on which the first magnet is disposed, wherein the first yoke includes a bottom portion; and a side plate portion disposed on a side surface of the bottom portion, wherein the first magnet is surrounded by the bottom portion and the side plate portion.

Description

Camera actuator, lens transfer device, and camera device including the same

The present invention relates to a camera actuator and a camera device including the same.

A camera is a device that takes a picture or video of a subject and is mounted on a portable device, a drone, or a vehicle. The camera device or camera module has an Image Stabilization (IS) function that corrects or prevents shaking of images caused by user movement in order to improve image quality, and the focal length of the lens by automatically adjusting the distance between the image sensor and the lens. It may have an auto focusing (AF) function for aligning, and a zooming function for shooting by increasing or decreasing the magnification of a distant subject through a zoom lens.

On the other hand, the resolution of the image sensor increases as it goes to higher pixels, so the size of the pixels decreases. As the pixels become smaller, the amount of light received during the same time decreases. Therefore, in a high-pixel camera, image shaking caused by hand shake caused by a slower shutter speed in a dark environment may be more severe. As a representative image stabilization (IS) technology, there is an optical image stabilizer (OIS) technology, which is a technology for correcting motion by changing a path of light.

According to the general OIS technology, the movement of the camera is detected through a gyrosensor, etc., and based on the detected movement, a lens may be tilted or moved, or a camera device including a lens and an image sensor may be tilted or moved. . When a lens or a camera device including a lens and an image sensor tilts or moves for OIS, a space for tilting or moving around the lens or camera device needs to be additionally secured.

Meanwhile, an actuator for OIS may be disposed around the lens. At this time, the actuator for OIS may include two axes perpendicular to the optical axis Z, that is, an actuator responsible for X-axis tilting and an actuator responsible for Y-axis tilting.

However, there are significant restrictions on space for arranging actuators for OIS according to the needs of ultra-slim and subminiature camera devices, and the camera device itself including a lens or a lens and an image sensor has enough space to tilt or move for OIS It can be difficult to guarantee. In addition, it is desirable for a high-pixel camera to increase the size of the lens in order to increase the amount of light received, but there may be a limit to increasing the size of the lens due to the space occupied by the actuator for OIS.

In addition, when a zooming function, an AF function, and an OIS function are all included in a camera device, there is a problem of causing magnetic field interference because the magnet for OIS and the magnet for AF or zoom are disposed close to each other.

In addition, camera actuators for AF and zoom in the camera device provide a long stroke to improve performance, but there is a problem in that magnetic field interference occurs between adjacent magnets and coils. In addition, there is a problem that the restoring force of the lens assembly is reduced due to magnetic field interference, and it is difficult to accurately measure the hall sensor by the magnetic field.

A technical problem to be solved by the present invention may provide a camera actuator and a camera device having a driving unit providing a long stroke (long movement distance) during AF/ZOOM.

In addition, the present invention can provide a camera actuator and a camera device in which magnetic field interference between facing magnets, coils, and hall sensors is minimized.

In addition, the present invention can provide a camera actuator and a camera device in which a long stroke is accurately realized by reducing the influence of a magnetic field through a yoke.

A camera actuator and a camera device that improve a moving distance of a lens assembly through the number of driving coils may be provided.

In addition, the present invention can provide a camera actuator and a camera device that more accurately detect an improved movement distance by improving positional linearity through connection of a plurality of hall sensors.

The problem to be solved in the embodiment is not limited thereto, and it will be said that the solution to the problem described below or the purpose or effect that can be grasped from the embodiment is also included.

A camera device according to an embodiment of the present invention includes a housing; a first bobbin moving in an optical axis direction based on the housing; and a first driving unit for moving the first bobbin, wherein the first driving unit includes a first coil; and a first magnet facing the first coil, including a first yoke coupled to the first bobbin and on which the first magnet is disposed, wherein the first yoke includes a bottom portion; and a side plate portion disposed on a side surface of the bottom portion, wherein the first magnet is surrounded by the bottom portion and the side plate portion.

The side plate portion facing the first side plate portion in the optical axis direction; and second side plate portions facing each other in a vertical direction, and the first yoke includes a coupling portion extending from the bottom toward the first bobbin.

The second side plate part may include a first sub-side plate part and a second sub-side plate part spaced apart from each other along the optical axis direction.

The coupling part may be disposed between the first sub-side plate part and the second sub-side plate part.

The coupler may overlap at least a portion of the first bobbin in a vertical direction.

The first sub-side plate part and the second sub-side plate part may have the same length in the optical axis direction.

A length of the coupler in the optical axis direction may be smaller than a length of the first sub-side plate part or the second sub-side plate part in the optical axis direction.

The bottom portion may include a yoke groove disposed between at least one of the first sub-side plate portion and the coupling portion and between the second sub-side plate portion and the coupling portion.

The first yoke may include a yoke hole disposed on the bottom portion, and the yoke hole may be disposed on a first imaginary line bisecting the first yoke in a vertical direction.

The coupler may be disposed on an imaginary line bisecting the first yoke in an optical axis direction.

The first sub-side plate part and the second sub-side plate part may have different lengths in the optical axis direction.

The coupler may not be disposed on a second imaginary line, and the second imaginary line may be a line bisecting the first yoke in the optical axis direction.

The couplers may be plural and may not overlap each other in a vertical direction.

A length of the second side plate in a horizontal direction may be less than a length of the first magnet in a horizontal direction.

An outer surface of the first magnet may be disposed outside the second side plate part.

The first coil may include first sub-coils disposed to overlap each other in the optical axis direction; and a second sub-coil, wherein a maximum length of the first sub-coil in the optical axis direction may be greater than a length of the first magnet in the optical axis direction.

A length of the first magnet in the optical axis direction may be greater than a maximum moving distance of the first bobbin.

a second bobbin moving in the direction of the optical axis; and a second driving unit for moving the second bobbin, wherein the second driving unit includes a second coil; And a second magnet facing the second coil; includes,

The second coil may include a third sub-coil disposed to overlap each other in the optical axis direction; and a fourth sub-coil.

An image sensor, wherein the second bobbin is disposed closer to the image sensor than the first bobbin, and a moving distance of the second bobbin in the optical axis direction is greater than a moving distance of the first bobbin in the optical axis direction. can be big

A camera device according to an embodiment includes a housing; a first bobbin and a second bobbin moving in an optical axis direction based on the housing; a first driving unit including a first magnet for moving the first bobbin; and a second drive unit including a second magnet for moving the second bobbin, wherein the first magnet and the second magnet are located on opposite sides of each other, and any one of the first magnet and the second magnet is A yoke disposed; includes.

The yoke has a bottom portion; And a side plate portion disposed on a side surface of the bottom portion,

Any one of the first magnet and the second magnet may be surrounded by a bottom portion and the side plate portion.

The housing may include a housing opening disposed on an upper surface thereof, and at least a portion of the first bobbin and the second bobbin may be exposed through the housing opening.

A housing yoke disposed outside the housing opening on at least one of the upper and lower surfaces of the housing, wherein the housing yoke includes a first housing yoke located above the first magnet and a first housing yoke located above the second magnet. 2 may include at least one of the housing yokes.

The first drive unit includes a first coil facing the first magnet, the second drive unit includes a second coil facing the second magnet, and the first housing yoke includes the first coil and a second coil. 1 may overlap at least a portion of the magnet in a vertical direction.

The first housing yoke may not partially overlap the first magnet in a vertical direction according to the movement of the first magnet.

A technical problem to be solved by the present invention may implement a camera actuator and a camera device having a driving unit providing a long stroke (long movement distance) during AF/ZOOM.

In addition, the present invention can implement a camera actuator and a camera device in which magnetic field interference between facing magnets, coils, and hall sensors is minimized.

In addition, the present invention can implement a camera actuator and a camera device in which a long stroke is accurately implemented by reducing the influence of a magnetic field through a yoke.

A camera actuator and a camera device that improve the moving distance of the lens assembly may be implemented through the number of driving coils.

In addition, the present invention can provide a camera actuator and a camera device that more accurately detect an improved movement distance by improving positional linearity through connection of a plurality of hall sensors.

Various advantageous advantages and effects of the present invention are not limited to the above description, and will be more easily understood in the process of describing specific embodiments of the present invention.

1 is a perspective view of a camera device according to an embodiment;
2 is an exploded perspective view of a camera device according to an embodiment;
3 is a cross-sectional view taken along line AA' in FIG. 1;
4 is an exploded perspective view of a first camera actuator according to an embodiment;
5 is a perspective view of a first camera actuator according to an embodiment in which a first shield can and a substrate are removed;
6A is a cross-sectional view taken along line BB' in FIG. 5;
6B is a cross-sectional view taken along line CC′ in FIG. 5;
7A is an exploded perspective view of a first camera actuator according to another embodiment;
7B is a cross-sectional view of a first camera actuator according to another embodiment;
7C is another cross-sectional view of a first camera actuator according to another embodiment;
8 is a perspective view of a second camera actuator according to an embodiment;
9 is an exploded perspective view of a second camera actuator according to an embodiment;
10A is a cross-sectional view taken along line DD' in FIG. 8;
10B is a perspective view illustrating a first optical driving unit, a moving assembly, and first and second guide units in a second camera actuator according to an embodiment;
10C is a diagram illustrating movement of a first lens assembly in a second camera actuator according to an embodiment;
10D is a graph illustrating a return force of a second lens assembly in a second camera actuator according to an embodiment;
10E is a graph illustrating a return force of a third lens assembly in a second camera actuator according to an embodiment;
11A is an exploded perspective view related to driving of a first lens assembly;
Figure 11b is a perspective view of each component combined in Figure 11a,
11c is a perspective view of a first yoke and a first magnet in FIG. 11b;
Fig. 11d is a top view of Fig. 11c;
11E is a perspective view of a first yoke according to an embodiment,
11F is a side view of a first yoke according to an embodiment;
11g is a view of a first yoke according to a modified example;
11H is a view of a first yoke according to another embodiment,
11I is a diagram of a first yoke according to another embodiment,
11J is a diagram of a first yoke according to another embodiment,
11K is a diagram of a first yoke according to another embodiment,
11L is a view of a first yoke according to another embodiment,
12A is an exploded perspective view related to the driving of the second lens assembly;
Figure 12b is a perspective view of each component combined in Figure 12a,
12c is a perspective view of the second yoke and the second magnet in FIG. 12b;
Fig. 12d is a top view of Fig. 12c;
12E is a perspective view of a second yoke according to an embodiment,
12F is a perspective view of a first yoke and a second yoke according to an embodiment;
13 is a diagram illustrating driving of a second camera actuator according to an embodiment;
14 is a schematic diagram showing a circuit board according to an embodiment;
15 is a perspective view of some components of a second camera actuator according to an embodiment;
16 is a diagram illustrating a first optical drive coil, a first optical drive magnet, and a yoke according to an embodiment;
17 is a diagram explaining movement of a first optical driving magnet by a second driving unit according to an embodiment;
18A is a diagram illustrating movement of second and third lens assemblies according to an embodiment;
18B is an exploded perspective view of a second housing and a housing yoke according to an embodiment;
18C is a view of a second housing and a housing yoke according to an embodiment;
18D is a view of a second housing and a housing yoke according to a modified example;
19 is a perspective view of a mobile terminal to which a camera device according to an embodiment is applied;
20 is a perspective view of a vehicle to which a camera device according to an embodiment is applied.

Since the present invention can make various changes and have various embodiments, specific embodiments are illustrated and described in the drawings. However, this specific

It is not intended to be limited to the embodiments, and it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as second, first, etc. may be used to describe various components, but the components are not limited by the terms. Terms are only used to distinguish one component from another. For example, a second element may be termed a first element, and similarly, a first element may be termed a second element, without departing from the scope of the present invention. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings, but the same or corresponding components regardless of reference numerals are given the same reference numerals, and overlapping descriptions thereof will be omitted.

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

1 and 2 , a camera device 1000 according to an embodiment may include a cover CV, a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. . Here, the first camera actuator 1100 may be used interchangeably as a 'first actuator' and the second camera actuator 1200 may be used interchangeably as a 'second actuator'.

The cover CV may cover the first camera actuator 1100 and/or the second camera actuator 1200 . Coupling force between the first camera actuator 1100 and the second camera actuator 1200 may be improved by the cover CV.

Furthermore, the cover CV may be made of a material that blocks electromagnetic waves. Thus, the first camera actuator 1100 and the second camera actuator 1200 in the cover CV can be easily protected.

Also, the first camera actuator 1100 may be an Optical Image Stabilizer (OIS) actuator.

As an example, the first camera actuator 1100 may change a path of light. As an example, the first camera actuator 1100 may vertically change a light path through an internal optical member (eg, a mirror or a prism). With this configuration, even if the thickness of the mobile terminal is reduced, magnification, auto focusing (AF), and OIS functions can be performed by placing a lens element larger than the thickness of the mobile terminal through a change in the light path.

The first camera actuator 1100 may change the light path from the first direction to the third direction. In this specification, the optical axis direction corresponds to the traveling direction of light provided to the image sensor in the third direction or the Z-axis direction.

Additionally, the first camera actuator 1100 may include a lens disposed in a predetermined lens barrel (not shown). And the lens may include a fixed focal length lens. Fixed focal length lenses may also be referred to as "single focal length lenses" or "short lenses".

The second camera actuator 1200 may be disposed behind the first camera actuator 1100 . The second camera actuator 1200 may be coupled to the first camera actuator 1100 . And mutual coupling can be made by various methods.

Also, the second camera actuator 1200 may be a zoom actuator or an auto focus (AF) actuator. For example, the second camera actuator 1200 may support one or a plurality of lenses and perform an auto focusing function or a zoom function by moving the lens according to a control signal from a predetermined control unit.

The circuit board 1300 may be disposed behind the second camera actuator 1200 . The circuit board 1300 may be electrically connected to the second camera actuator 1200 and the first camera actuator 1100 . Also, the number of circuit boards 1300 may be plural.

The circuit board 1300 may be connected to the second housing of the second camera actuator 1200 and may have an image sensor. Furthermore, a base portion including a filter may be seated on the circuit board 1300 . A description of this will be given later.

A camera device according to an embodiment may include a single camera device or a plurality of camera devices. For example, the plurality of camera devices may include a first camera device and a second camera device. Also, as described above, a camera device may be used interchangeably with a 'camera module', a 'camera device', an 'imaging device', an 'imaging module', an 'imaging device', and the like. Further, the camera actuator refers to a component that moves an optical member, a lens, and the like. Thus, the camera actuator may or may not include an optical member, a lens, or the like. Hereinafter, a camera actuator will be described based on including a lens. In addition, the camera actuator may be used interchangeably with a 'lens moving device', a 'lens moving device', a 'optical member moving device', a 'zoom lens moving device', and the like. Accordingly, the first camera actuator may be used interchangeably as a 'first lens transfer device' and the second camera actuator may be used interchangeably as a 'second lens transfer device'. Furthermore, an actuator is a device that moves an optical member such as a lens, but in this specification, it is described as a device including a lens.

Also, the first camera device may include a single actuator or a plurality of actuators. For example, the first camera device may include a first camera actuator 1100 and a second camera actuator 1200 .

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

Referring to FIG. 3 , the camera device according to the embodiment may include a first camera actuator 1100 that functions as an OIS and a second camera actuator 1200 that functions as a zooming function and an AF function.

Light may be incident into the camera device through an opening area located on the upper surface of the first camera actuator 1100 . That is, the light may be incident into the first camera actuator 1100 along the optical axis direction (eg, the X-axis direction), and the light path may be changed in a vertical direction (eg, the Z-axis direction) through the optical member. The light may pass through the second camera actuator 1200 and be incident to the image sensor IS located at one end of the second camera actuator 1200 (PATH).

In this specification, the bottom surface means one side in the first direction. In addition, the first direction is the X-axis direction in the drawing and may be used interchangeably with the second axis direction. The second direction is the Y-axis direction in the drawing and may be used interchangeably with the first-axis direction. The second direction is a direction perpendicular to the first direction. Also, the third direction is the Z-axis direction in the drawing, and may be used interchangeably with the third-axis direction. It is a direction perpendicular to both the first direction and the second direction. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are perpendicular to the optical axis and are tilted by the second camera actuator. can A detailed description of this will be given later. In addition, in the description of the second camera actuator 1200 hereinafter, the optical axis direction corresponds to the optical path and is the third direction (Z-axis direction), which will be described below.

Also, with this configuration, the camera device according to the embodiment may improve spatial limitations of the first camera actuator and the second camera actuator by changing the light path. That is, the camera device according to the embodiment may expand the light path while minimizing the thickness of the camera device in response to the light path change. Furthermore, it should be understood that the second camera actuator may provide a high range of magnification by controlling a focus or the like in an extended light path.

In addition, the camera device according to the embodiment may implement OIS through control of an optical path through a first camera actuator, thereby minimizing the occurrence of a decentent or tilt phenomenon and obtaining the best optical characteristics. can pay

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

also. The second camera actuator 1200 includes a coil and a magnet to perform a high-magnification zooming function.

For example, the first lens assembly and the second lens assembly may be moving lenses that move through a coil, a magnet, and a guide pin, and the third lens assembly may be a fixed lens, but is not limited thereto. For example, the third lens assembly may perform the function of a focator that forms light at a specific location, and the first lens assembly re-images an image formed by the third lens assembly, which is a concentrator, at another location. It can perform a variator function. Meanwhile, in the first lens assembly, a change in magnification may be large because the distance to the subject or the image distance is greatly changed, and the first lens assembly, which is a variable magnification, may play an important role in changing the focal length or magnification of the optical system. On the other hand, the image formed by the first lens assembly, which is a variable magnifier, may be slightly different depending on the location. Accordingly, the second lens assembly may perform a position compensation function for an image formed by the variable magnifier. For example, the second lens assembly may perform a compensator function that serves to accurately form an image formed by the first lens assembly, which is a variable magnifier, at an actual image sensor position. For example, the first lens assembly and the second lens assembly may be driven by electromagnetic force due to an interaction between a coil and a magnet. The above information may be applied to a lens assembly to be described later.

On the other hand, when the actuator for OIS and the actuator for AF or Zoom are arranged according to an embodiment of the present invention, magnetic field interference with the magnet for AF or Zoom can be prevented during OIS operation. Since the second optical drive magnet of the first camera actuator 1100 is disposed separately from the second camera actuator 1200, magnetic field interference between the first camera actuator 1100 and the second camera actuator 1200 can be prevented. . In this specification, OIS may be used interchangeably with terms such as hand shake correction, optical image stabilization, optical image correction, and shake correction.

4 is an exploded perspective view of a first camera actuator according to an embodiment.

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

The mover 1130 may include a holder 1131 and an optical member 1132 seated on the holder 1131 . The rotating unit 1140 includes a tilting guide unit 1141, a first magnetic body 1142 having a coupling force with the tilting guide unit 1141, and a second magnetic body 1143 positioned within the tilting guide unit 1141. In addition, the second optical driving unit 1150 includes a second optical driving magnet 1151 , a second optical driving coil 1152 , a fourth hall sensor unit 1153 and a first substrate unit 1154 .

The first shield can (not shown) may be located at the outermost side of the first camera actuator 1100 to surround the rotating unit 1140 and the second optical driving unit 1150 to be described later.

The first shield can (not shown) may block or reduce electromagnetic waves generated from the outside. Accordingly, the occurrence of malfunctions in the rotating unit 1140 or the second optical driving unit 1150 may be reduced.

The first housing 1120 may be located inside a first shield can (not shown). In addition, the first housing 1120 may be located inside the first substrate unit 1154 to be described later. The first housing 1120 may be coupled to or fitted with a first shield can (not shown).

The first housing 1120 may include a plurality of housing side parts. A first housing side part 1121 , a second housing side part 1122 , a third housing side part 1123 , and a fourth housing side part 1124 may be included.

The first housing side part 1121 and the second housing side part 1122 may be disposed to face each other. Also, the third housing side part 1123 and the fourth housing side part 1124 may be disposed between the first housing side part 1121 and the second housing side part 1122 .

The third housing side part 1123 may contact the first housing side part 1121 , the second housing side part 1122 , and the fourth housing side part 1124 . Also, the third housing side part 1123 may include a bottom surface from the first housing 1120 to the lower part.

Also, the first housing side portion 1121 may include a first housing hole 1121a. A third coil 1152a to be described later may be positioned in the first housing hole 1121a.

In addition, the second housing side portion 1122 may include a second housing hole 1122a. A fourth coil 1152b to be described later may be positioned in the second housing hole 1122a.

The third coil 1152a and the fourth coil 1152b may be coupled to the first substrate portion 1154 . In an embodiment, the third coil 1152a and the fourth coil 1152b may be electrically connected to the first substrate 1154 to allow current to flow therethrough. This current is a component of the electromagnetic force that the first camera actuator can tilt with respect to the X-axis.

Also, the third housing side portion 1123 may include a third housing hole 1123a. A fifth coil 1152c to be described later may be positioned in the third housing hole 1123a. The fifth coil 1152c may be coupled to the first substrate portion 1154 . In addition, the fifth coil 1152c is electrically connected to the first substrate portion 1154 so that current may flow therethrough. This current is a component of the electromagnetic force that the first camera actuator can tilt with respect to the Y-axis.

The fourth housing side portion 1124 may include a first housing groove 1124a. A first magnetic body 1142 to be described below may be disposed in an area facing the first housing groove 1124a. Accordingly, the first housing 1120 may be coupled to the tilting guide 1141 by magnetic force or the like.

In addition, the first housing groove 1124a according to the embodiment may be located on an inner surface or an outer surface of the fourth housing side part 1124 . Accordingly, the first magnetic material 1142 may also be disposed to correspond to the position of the first housing groove 1124a.

In addition, the first housing 1120 may include an accommodating portion 1125 formed by the first to fourth housing side parts 1121 to 1224 . A mover 1130 may be located in the accommodating part 1125 .

The mover 1130 includes a holder 1131 and an optical member 1132 seated on the holder 1131 .

The holder 1131 may be seated in the accommodating portion 1125 of the first housing 1120 . The holder 1131 is formed outside the outer surface of the first prism to the fourth prism corresponding to the first housing side part 1121, the second housing side part 1122, the third housing side part 1123, and the fourth housing side part 1124, respectively. side may be included.

A seating groove in which the second magnetic material 1143 can be seated may be disposed on an outer surface of the fourth prism facing the side part 1124 of the fourth housing.

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

The rotation unit 1140 includes a tilting guide unit 1141, a first magnetic body 1142 having a coupling force with the tilting guide unit 1141, and a second magnetic body 1143 positioned within the tilting guide unit 1141.

The tilting guide part 1141 may be combined with the mover 1130 and the first housing 1120 described above. The tilting guide part 1141 may include an additional magnetic body (not shown) located therein.

Also, the tilting guide part 1141 may be disposed adjacent to the optical axis. Thus, the actuator according to the embodiment can easily change the light path according to the tilt of the first and second axes, which will be described later.

The tilting guide part 1141 may include a first protrusion spaced apart from each other in a first direction (X-axis direction) and a second protrusion spaced apart from each other in a second direction (Y-axis direction). Also, the first protrusion and the second protrusion may protrude in opposite directions. A detailed description of this will be given later.

In addition, the first magnetic body 1142 includes a plurality of yokes, and the plurality of yokes may be positioned to face each other with respect to the tilting guide part 1141 . As an example, the first magnetic body 1142 may include a plurality of facing yokes. Also, the tilting guide part 1141 may be located between a plurality of yokes.

As described above, the first magnetic body 1142 may be located in the first housing 1120 . Also, as described above, the first magnetic material 1142 may be seated on the inner or outer surface of the fourth housing side part 1124 . For example, the first magnetic material 1142 may be seated in a groove formed on an outer surface of the fourth housing side part 1124 . Alternatively, the first magnetic material 1142 may be seated in the aforementioned first housing groove 1124a.

And the second magnetic material 1143 may be located on the outer surface of the mover 1130, particularly the holder 1131. With this configuration, the tilting guide part 1141 can be easily combined with the first housing 1120 and the mover 1130 by the coupling force generated by the magnetic force between the second magnetic body 1143 and the first magnetic body 1142 inside. there is. In the present invention, the positions of the first magnetic body 1142 and the second magnetic body 1143 may be moved relative to each other.

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

The second optical driving magnet 1151 may include a plurality of magnets. As an example, the second optical driving magnet 1151 may include a third magnet 1151a, a fourth magnet 1151b, and a fifth magnet 1151c.

The third magnet 1151a, the fourth magnet 1151b, and the fifth magnet 1151c may be positioned on an outer surface of the holder 1131, respectively. Also, the third magnet 1151a and the fourth magnet 1151b may be positioned to face each other. Also, the fifth magnet 1151c may be located on a bottom surface among outer surfaces of the holder 1131 . A detailed description of this will be given later.

The second optical drive coil 1152 may include a plurality of coils. As an example, the second optical drive coil 1152 may include a third coil 1152a, a fourth coil 1152b, and a fifth coil 1152c.

The third coil 1152a may be positioned opposite to the third magnet 1151a. Accordingly, the third coil 1152a may be positioned in the first housing hole 1121a of the first housing side part 1121 as described above.

Also, the fourth coil 1152b may be positioned opposite to the fourth magnet 1151b. Accordingly, the fourth coil 1152b may be positioned in the second housing hole 1122a of the second housing side portion 1122 as described above.

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

The fifth coil 1152c may be positioned opposite to the fifth magnet 1151c. Accordingly, the fifth coil 1152c may be positioned in the third housing hole 1123a of the third housing side portion 1123 as described above. The fifth coil 1152c generates electromagnetic force with the fifth magnet 1151c to perform Y-axis tilting of the mover 1130 and the rotating part 1140 with respect to the first housing 1120.

Here, X-axis tilting means tilting based on the X-axis, and Y-axis tilting means tilting based on the Y-axis.

The fourth hall sensor unit 1153 may include a plurality of hall sensors. The Hall sensor corresponds to and is used interchangeably with the 'sensor unit' described later. For example, the fourth hall sensor unit 1153 may include a third hall sensor 1153a, a fourth hall sensor 1153b, and a fifth hall sensor 1153c.

The third hall sensor 1153a may be located inside the third coil 1152a. The fourth Hall sensor 1153b may be disposed symmetrically with the third Hall sensor 1153a in a first direction (X-axis direction) and a third direction (Z-axis direction). Also, the fourth hall sensor 1153b may be located inside the fourth coil 1152b.

The third Hall sensor 1153a may detect a magnetic flux change inside the third coil 1152a. Also, the fourth Hall sensor 1153b may detect a magnetic flux change in the fourth coil 1152b. Accordingly, position sensing between the third and fourth magnets 1151a and 1151b and the third and fourth Hall sensors 1153a and 1153b may be performed. The first camera actuator according to the embodiment may sense the position through, for example, the third and fourth hall sensors 1153a and 1153b, and more accurately control the X-axis tilt.

In addition, the fifth hall sensor 1153c may be located inside the fifth coil 1152c. The fifth hall sensor 1153c may detect a magnetic flux change inside the fifth coil 1152c. Accordingly, position sensing between the fifth magnet 1151c and the fifth Hall sensor 1153bc may be performed. The first camera actuator according to the embodiment may control Y-axis tilt through this. The first to fifth Hall sensors may be at least one.

The first substrate unit 1154 may be located under the second optical driving unit 1150 . The first substrate unit 1154 may be electrically connected to the second optical driving coil 1152 and the fourth hall sensor unit 1153 . For example, the first substrate unit 1154 may be coupled to the second optical driving coil 1152 and the fourth hall sensor unit 1153 through SMT. However, it is not limited to this method.

The first substrate portion 1154 may 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 may be variously made as described above. Also, through the combination, the second optical drive coil 1152 and the fourth hall sensor unit 1153 may be positioned within the outer surface of the first housing 1120 .

The first board unit 1154 includes a circuit board having wiring patterns that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), and a rigid flexible printed circuit board (Rigid Flexible PCB). can do. However, it is not limited to these types.

5 is a perspective view of a first camera actuator according to an embodiment in which a first shield can and a substrate are removed, FIG. 6A is a cross-sectional view taken along line BB' in FIG. 5, and FIG. 6B is a cross-sectional view taken along line CC' in FIG. am.

5 is a perspective view of a first camera actuator according to an embodiment in which a shield can and a substrate are removed, FIG. 6A is a cross-sectional view taken along line BB′ in FIG. 5 , and FIG. 6B is a cross-sectional view taken along line CC′ in FIG. 5 .

Referring to FIGS. 5 to 6B , the fifth coil 1152a may be located on the side part 1121 of the first housing.

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

In addition, it may be located on the second housing side part 1122 of the first coil 1152b. Accordingly, the first coil 1152b and the fourth magnet 1151b may be positioned to face each other. The fourth magnet 1151b may at least partially overlap the first coil 1152b in the second direction (Y-axis direction).

In addition, the fifth coil 1152a and the first coil 1152b overlap in the second direction (Y-axis direction), and the third magnet 1151a and the fourth magnet 1151b overlap in the second direction (Y-axis direction). can be nested with With this configuration, the electromagnetic force applied to the outer surfaces of the holder (the outer surface of the first holder and the outer surface of the second holder) is located on a parallel axis in the second direction (Y-axis direction), so that the X-axis tilt is accurate and precise. can be performed

In addition, a first accommodating groove (not shown) may be located on an outer surface of the fourth holder. In addition, first protrusions PR1a and PR1b may be disposed in the first accommodating groove. Accordingly, when the X-axis tilt is performed, the first protrusions PR1a and PR1b may be reference axes (or rotation axes) of the tilt. Accordingly, the tilting guide unit 1141 and the mover 1130 may move left and right.

As described above, the second protrusion PR2 may be seated in the groove of the inner surface of the fourth housing side part 1124 . Also, when the Y-axis tilt is performed, the rotation plate and the mover may rotate with the second protrusion PR2 as a reference axis of the Y-axis tilt.

According to an embodiment, OIS may be performed by the first protrusion and the second protrusion.

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

In an embodiment, the fifth magnet 1151c disposed below the holder 1131 forms an electromagnetic force with the second coil 1152c to tilt or rotate the mover 1130 in the first direction (X-axis direction). there is.

Specifically, the tilting guide part 1141 is coupled to the first housing 1120 and the mover 1130 by the first magnetic body 1142 in the first housing 1120 and the second magnetic body 1143 in the mover 1130. It can be. Also, the first protrusions PR1 may be spaced apart in a first direction (X-axis direction) and supported by the first housing 1120 .

Also, the tilting guide part 1141 may rotate or tilt the second protrusion PR2 protruding toward the mover 1130 with respect to a reference axis (or rotation axis). That is, the tilting guide part 1141 may perform a Y-axis tilt with the second protrusion PR2 as a reference axis.

For example, the mover 1130 is moved along the X-axis by the first electromagnetic forces F1A and F1B between the fifth magnet 1151c disposed in the third seating groove and the second coil 1152c disposed on the side of the third substrate. OIS implementation may be performed while rotating (X1->X1a or X1bb) at a first angle θ1 in the direction. The first angle θ1 may be ±1° to ±3°. However, it is not limited thereto.

Hereinafter, in the first camera actuator according to various embodiments, the electromagnetic force may generate force in the described direction to move the mover, or may generate force in another direction to move the mover in the described direction. That is, the direction of the described electromagnetic force means the direction of the force generated by the magnet and the coil to move the mover.

Referring to FIG. 6B , X-axis tilt may be performed. That is, OIS can be implemented by rotating in the second direction (Y-axis direction).

OIS can be implemented while the mover 1130 tilts or rotates (or tilts the X axis) in the Y-axis direction.

In an embodiment, the third magnet 1151a and the fourth magnet 1151b disposed on the holder 1131 form electromagnetic force with the fifth coil 1152a and the first coil 1152b, respectively, in the second direction (Y). axial direction), the tilting guide part 1141 and the mover 1130 may be tilted or rotated.

The tilting guide part 1141 may rotate or tilt (X-axis tilt) the first protrusion PR1 in the second direction about a reference axis (or rotation axis).

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

In addition, as described above, the electromagnetic force by the third and fourth magnets 1151a and 1151b and the third and fourth coils 1152a and 1152b may act in the third direction or in a direction opposite to the third direction. For example, the electromagnetic force may be generated in the third direction (Z-axis direction) from the left side of the mover 1130 and act in the opposite direction to the third direction (Z-axis direction) from the right side of the mover 1130. Accordingly, the mover 1130 may rotate based on the first direction. Alternatively, it may move along the second direction.

As such, the second actuator according to the embodiment moves the tilting guide part 1141 and the mover 1130 in the first direction (X-axis) by the electromagnetic force between the second optical drive magnet in the holder and the second optical drive coil disposed in the housing. direction) or the second direction (Y-axis direction), it is possible to minimize the occurrence of a decentration or tilt phenomenon when implementing OIS and to provide the best optical characteristics. In addition, as described above, 'Y-axis tilt' corresponds to rotation or tilt in the first direction (X-axis direction), and 'X-axis tilt' corresponds to rotation or tilt in the second direction (Y-axis direction) do.

7A is an exploded perspective view of a first camera actuator according to another embodiment, FIG. 7B is a cross-sectional view of the first camera actuator according to another embodiment, and FIG. 7C is another cross-sectional view of the first camera actuator according to another embodiment. .

Referring to FIGS. 7A to 7C , a first camera actuator 1100 according to another embodiment includes a first housing 1120, a mover 1130, a rotating unit 1140, a second optical driving unit 1150, and a first member. 1126 and a second member 1131a. Here, the first magnetic body and the second magnetic body will be described with reference numerals different from those of the previous embodiment.

The mover 1130 may include a holder 1131 and an optical member 1132 seated on the holder 1131 . Also, the mover 1130 may be disposed within the housing 1120. The rotation unit 1140 may include a tilting guide unit 1141 , and second magnetic bodies 1142 and first magnetic bodies 1143 having different polarities to press the tilting guide unit 1141 . The first magnetic body 1143 and the second magnetic body 1142 may have different sizes. As an example, the first magnetic body 1143 may be larger in size than the second magnetic body 1142 . For example, the first magnetic body 1143 and the second magnetic body 1142 may have the same length in an optical axis direction or a third direction (Z-axis direction), and may have different areas in the first and second directions. In this case, the area of the first magnetic body 1143 may be larger than that of the second magnetic body 1142 . In addition, the second optical driving unit 1150 includes a second optical driving magnet 1151, a second optical driving coil 1152, a hall sensor unit 1153, a first board unit 1154, and a yoke unit 1155. do.

First, the first camera actuator 1100 may include a shield can (not shown). A shield can (not shown) may be located at the outermost side of the first camera actuator 1100 to surround the rotating unit 1140 and the second optical driving unit 1150 to be described later.

Such a shield can (not shown) may block or reduce electromagnetic waves generated from the outside. That is, the shield can (not shown) may reduce the occurrence of malfunction in the rotating unit 1140 or the second optical driving unit 1150 .

The first housing 1120 may be located inside a shield can (not shown). When there is no shield can, the first housing 1120 may be located on the outermost side of the first camera actuator.

In addition, the first housing 1120 may be located inside the first substrate unit 1154 to be described later. The first housing 1120 may be fastened by being fitted or aligned with a shield can (not shown).

The first housing 1120 may include a first housing side part 1121 , a second housing side part 1122 , a third housing side part 1123 , and a fourth housing side part 1124 . A detailed description of this will be given later.

The first member 1126 may be disposed in the first housing 1120 . The first member 1126 may be disposed between the second member 1131a and the housing. The first member 1126 may be disposed within the housing or located on one side of the housing. A description of this will be given later.

The mover 1130 includes a holder 1131 and an optical member 1132 seated in the holder 1131 .

The holder 1131 may be seated in the accommodating portion 1125 of the first housing 1120 . The holder 1131 is a first to fourth holder outer surface corresponding to the first housing side part 1121, the second housing side part 1122, the third housing side part 1123, and the first member 1126, respectively. can include For example, the outer surface of the first holder to the outer surface of the fourth holder correspond to the inner surfaces of the first housing side 1121, the second housing side 1122, the third housing side 1123, and the first member 1126, respectively. to do or to face.

Also, the holder 1131 may include a second member 1131a disposed in the fourth seating groove. A detailed description of this will be given later.

The optical member 1132 may be seated on the holder 1131 . To this end, the holder 1131 may have a seating surface, and the seating surface may be formed by a receiving groove. In an embodiment, the optical member 1132 may be formed of a mirror or a prism. Hereinafter, although a prism is shown as a reference, it may be composed of a plurality of lenses as in the above-described embodiment. Alternatively, the optical member 1132 may include a plurality of lenses and prisms or mirrors. Also, the optical member 1132 may include a reflector disposed therein. However, it is not limited thereto.

In addition, the optical member 1132 may reflect light reflected from the outside (eg, an object) into the camera module. In other words, the optical member 1132 may improve spatial limitations of the first camera actuator and the second camera actuator by changing the path of the reflected light. As such, it should be understood that the camera module may provide a high range of magnification by extending the optical path while minimizing the thickness.

Additionally, the second member 1131a may be coupled to the holder 1131 . The second member 1131a may be disposed outside the holder 1131 and inside the housing. In addition, the second member 1131a may be seated in an additional groove located in an area other than the fourth seating groove on the outer surface of the fourth holder of the holder 1131 . Through this, the second member 1131a may be coupled to the holder 1131, and at least a portion of the first member 1126 may be positioned between the second member 1131a and the holder 1131. For example, at least a portion of the first member 1126 may pass through a space formed between the second member 1131a and the holder 1131 .

Also, the second member 1131a may have a structure separated from the holder 1131 . With this configuration, assembly of the first camera actuator can be easily performed as will be described later. Alternatively, the second member 1131a may be integrally formed with the holder 1131, but will be described below as a separate structure.

The rotation unit 1140 includes a tilting guide unit 1141 , and second magnetic bodies 1142 and first magnetic bodies 1143 having different polarities to press the tilting guide unit 1141 .

The tilting guide part 1141 may be combined with the mover 1130 and the first housing 1120 described above. Specifically, the tilting guide part 1141 may be disposed between the holder 1131 and the first member 1126 . Accordingly, the tilting guide part 1141 may be coupled to the mover 1130 of the holder 1131 and the first housing 1120 . However, unlike the above, in this embodiment, the tilting guide part 1141 may be disposed between the first member 1126 and the holder 1131. Specifically, the tilting guide part 1141 may be located between the first member 1126 and the fourth seating groove of the holder 1131 .

In addition, the second magnetic body 1142 and the first magnetic body 1143 may be seated in the first groove gr1 formed in the second member 1131a and the second groove gr2 formed in the first member 1126, respectively. there is. In this embodiment, the first and second grooves gr1 and gr2 may have different positions from the first and second grooves described in the above-described other embodiments. However, the first groove gr1 is located in the second member 1131a and moves integrally with the holder, and the second groove gr2 is located on the first member 1126 corresponding to the first groove gr1. and coupled to the first housing 1120. Therefore, these terms will be used interchangeably.

Also, the tilting guide part 1141 may be disposed adjacent to the optical axis. Thus, the actuator according to another embodiment can easily change the light path according to the tilt of the first and second axes, which will be described later.

The tilting guide part 1141 may include a first protrusion spaced apart from each other in a first direction (X-axis direction) and a second protrusion spaced apart from each other in a second direction (Y-axis direction). Also, the first protrusion and the second protrusion may protrude in opposite directions. A detailed description of this will be given later. The first protrusion may protrude toward the mover. Also, the first protrusion may extend from the base in an optical axis direction or a third direction (Z-axis direction). The second protrusion may protrude in an opposite direction to the first protrusion. That is, the second protrusion may extend in a direction opposite to the optical axis direction or in a direction opposite to the third direction (Z-axis direction). Also, the second protrusion may extend toward the first member 1126 or the housing 1120 .

Also, as described above, the second magnetic body 1142 may be positioned within the second member 1131a. In addition, the first magnetic material 1143 may be positioned within the first member 1126 .

The second magnetic body 1142 and the first magnetic body 1143 may have the same polarity. For example, the second magnetic body 1142 may be a magnet having an N pole, and the first magnetic body 1143 may be a magnet having an N pole. Alternatively, the second magnetic body 1142 may be a magnet having an S pole, and the first magnetic body 1143 may be a magnet having an S pole.

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

The second magnetic body 1142 and the first magnetic body 1143 may generate a repulsive force between each other due to the polarity described above. With this configuration, the above-described repulsive force is applied to the second member 1131a or holder 1131 coupled to the second magnetic body 1142 and the first member 1126 coupled to the first magnetic body 1143 or the first housing ( 1120) may be applied. At this time, the repulsive force applied to the second member 1131a may be transferred to the holder 1131 coupled with the second member 1131a. Accordingly, the tilting guide part 1141 disposed between the second member 1131a and the first member 1126 may be pressed by the repulsive force. That is, the repulsive force may maintain the position of the tilting guide 1141 between the holder 1131 and the first housing 1120 (or the first member 1126). With this configuration, the position between the mover 1130 and the first housing 1120 can be maintained even during X-axis tilt or Y-axis tilt. In addition, the tilting guide unit may come into close contact with the first member 1126 and the holder 1131 due to repulsive force between the first magnetic body 1143 and the second magnetic body 1142 . The tilting guide part 1141 may guide the tilting of the mover 1130.

The second optical driving unit 1150 includes a second optical driving magnet 1151, a second optical driving coil 1152, a hall sensor unit 1153, a first substrate unit 1154, and a yoke unit 1155. Except for the contents described in this embodiment, the above-described contents may be equally applied.

The fifth coil 1152a may be located on the side part 1121 of the first housing, and the third magnet 1151a may be located on the outer surface 1131S1 of the holder 1131. Accordingly, the fifth coil 1152a and the third magnet 1151a may be positioned to face each other. The third magnet 1151a may at least partially overlap the fifth coil 1152a in the second direction (Y-axis direction).

In addition, the first coil 1152b may be located on the side part 1122 of the second housing, and the fourth magnet 1151b may be located on the outer surface 1131S2 of the second holder 1131. Accordingly, the first coil 1152b and the fourth magnet 1151b may be positioned to face each other. The fourth magnet 1151b may at least partially overlap the first coil 1152b in the second direction (Y-axis direction).

In addition, the fifth coil 1152a and the first coil 1152b overlap in the second direction (Y-axis direction), and the third magnet 1151a and the fourth magnet 1151b overlap in the second direction (Y-axis direction). can be nested with

With this configuration, the electromagnetic force applied to the outer surfaces of the holder (the outer surface of the first holder and the outer surface of the second holder) is located on a parallel axis in the second direction (Y-axis direction), so that the X-axis tilt is accurate and precise. can be performed

Also, the second protrusions PR2a and PR2b of the tilting guide part 1141 may come into contact with the first member 1126 of the first housing 1120 . The second protrusion PR2 may be seated in the second protruding groove PH2 formed on one side of the first member 1126 . Also, when the X-axis tilt is performed, the second protrusions PR2a and PR2b may be reference axes (or rotational axes) of the tilt. Accordingly, the tilting guide unit 1141 and the mover 1130 may move along the second direction.

In addition, the third hall sensor 1153a may be positioned outside for electrical connection and coupling with the first substrate 1154 as described above. However, it is not limited to these positions.

In addition, the second coil 1152c may be located on the side part 1123 of the third housing, and the fifth magnet 1151c may be located on the outer surface 1131S3 of the third holder 1131 . The second coil 1152c and the fifth magnet 1151c may overlap at least partially in the first direction (X-axis direction). Accordingly, the strength of the electromagnetic force between the second coil 1152c and the fifth magnet 1151c can be easily controlled.

As described above, the tilting guide part 1141 may be located on the outer surface 1131S4 of the fourth holder of the holder 1131 . In addition, the tilting guide part 1141 may be seated in the fourth seating groove 1131S4a on the outer surface of the fourth holder. As described above, the fourth seating groove 1131S4a may include a first area, a second area, and a third area.

The second member 1131a may be positioned in the first region. That is, the first region may overlap the second member 1131a in the first direction (X-axis direction). In particular, the first region may be a region where the member base portion of the second member 1131a is located. In this case, the first area may be located on the outer surface 1131S4 of the fourth holder. That is, the first area may correspond to an area located above the fourth seating groove 1131S4a. In this case, the first area may not be one area within the fourth seating groove 1131S4a.

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

Also, the second area may be located on the outer surface 1131S4 of the fourth holder like the first area. That is, the second area may correspond to the area located above the fourth seating groove 1131S4a.

A tilting guide unit may be located in the third area. In particular, the base of the tilting guide unit may be located in the third area. That is, the third area may overlap the tilting guide part (eg, the base) in the first direction (X-axis direction).

A second member 1131a is disposed in the first region, and the second member 1131a may include a first groove gr1 formed on an inner surface. In addition, the second magnetic body 1142 is disposed in the first groove gr1 as described above, and the repulsive force RF2 generated from the second magnetic body 1142 is applied to the fourth part of the holder 1131 through the second member 1131a. It may be transferred to the seating groove 1131S4a (RF2'). Accordingly, the holder 1131 may apply force to the tilting guide 1141 in the same direction as the repulsive force RF2 generated by the second magnetic material 1142 .

A first member 1126 may be disposed in the second region. The first member 1126 may include a second groove gr2 facing the first groove gr1. In addition, the first member 1126 may include a second protrusion groove PH2 disposed on a surface corresponding to the second groove gr2. Also, the repulsive force RF1 generated by the first magnetic body 1143 may be applied to the first member 1126 . Accordingly, the first member 1126 and the second member 1131a press the tilting guide part 1141 disposed between the first member 1126 and the holder 1131 through the generated repulsive forces RF1 and RF2'. can do. Thus, even after the holder is tilted in the X-axis or the Y-axis by the current applied to the first and second coils or the second coil 1152c, the distance between the holder 1131, the first housing 1120, and the tilting guide 1141 bonding can be maintained.

A tilting guide part 1141 may be disposed in the third region. As described above, the tilting guide part 1141 may include the first protrusion PR1 and the second protrusion PR2. In this case, the first protrusion PR1 and the second protrusion PR2 may be disposed on the second surface 1141b and the first surface 1141a of the base, respectively. In this way, in another embodiment described below, the first protrusion PR1 and the second protrusion PR2 may be variously positioned on the facing surfaces of the base.

The first protruding groove PH1 may be located in the fourth seating groove 1131S4a. Also, the first protruding part PR1 of the tilting guide part 1141 may be accommodated in the first protruding groove PH1. Accordingly, the first protrusion PR1 may contact the first protruding groove PH1. The maximum diameter of the first protrusion groove PH1 may correspond to the maximum diameter of the first protrusion PR1. This may be equally applied to the second protrusion groove PH2 and the second protrusion PR2. That is, the maximum diameter of the second protrusion groove PH2 may correspond to the maximum diameter of the second protrusion PR2. Also, as a result, the second protrusion PR2 may contact the second protruding groove PH2. With this configuration, the first axis tilt based on the first protrusion PR1 and the second axis tilt based on the second protrusion PR2 can easily occur, and the tilt radius can be improved.

In addition, the tilting guide part 1141 is arranged side by side with the second member 1131a and the first member 1126 in the third direction (Z-axis direction), so that the tilting guide part 1141 is aligned with the optical member 1132. It can be overlapped in one direction (X-axis direction). More specifically, in the embodiment, the first protrusion PR1 may overlap the optical member 1132 in the first direction (X-axis direction). Furthermore, at least a portion of the first protrusion PR1 may overlap the second coil 1152c or the fifth magnet 1151c in the first direction (X-axis direction). That is, in the camera actuator according to the embodiment, each protrusion, which is a central axis of tilt, may be located adjacent to the center of gravity of the mover 1130. Thus, the tilting guide unit may be located adjacent to the center of gravity of the holder. Thus, the camera actuator according to the embodiment can minimize the moment value for tilting the holder and minimize the consumption of current applied to the coil unit to tilt the holder, thereby improving power consumption and reliability of the device. .

In addition, the second magnetic body 1142 and the first magnetic body 1143 may not overlap the second coil 1152c or the optical member 1132 in the first direction (X-axis direction). In other words, in the embodiment, the second magnetic body 1142 and the first magnetic body 1143 may be spaced apart from the second coil 1152c or the optical member 1132 in a third direction (Z-axis direction). Thus, the second coil 1152c can minimize magnetic force transmitted from the second magnetic body 1142 and the first magnetic body 1143 . Thus, the camera actuator according to the embodiment can easily perform up and down driving (Y-axis tilt) and can minimize power consumption.

Furthermore, as described above, the fourth Hall sensor 1153b located inside the second coil 1152c detects a change in magnetic flux, thereby sensing the position between the fifth magnet 1151c and the fourth Hall sensor 1153b. can be performed In this case, the offset voltage of the fourth Hall sensor 1153b may be changed according to the influence of the magnetic field formed from the second magnetic body 1142 and the first magnetic body 1143 .

The first camera actuator according to the embodiment includes a second member 1131a, a second magnetic body 1142, a first magnetic body 1143, a first member 1126, a tilting guide unit 1141, and a holder ( 1131) can be arranged in order. However, since the second magnetic body is located in the second member and the first magnetic body is located in the first member, the second member, the first member, the tilting guide unit, and the holder may be disposed in that order.

In an embodiment, the distance between the second magnetic body 1142 and the first magnetic body 1143 in the third direction from the holder 1131 (or the optical member 1132) may be greater than the distance between the tilting guide parts 1141. there is. Accordingly, the fourth hall sensor 1153b under the holder 1131 may also be spaced apart from the second magnetic body 1142 and the first magnetic body 1143 by a predetermined distance. Accordingly, the influence of the magnetic field formed by the second magnetic body 1142 and the first magnetic body 1143 is minimized in the fourth Hall sensor 1153b, so that the hall voltage is concentrated in a positive or negative direction and can be prevented from being saturated. That is, this configuration allows the hall electrode to have a range in which Hall Calibration can be performed. Furthermore, the temperature is also affected by the electrode of the Hall sensor, and the resolving power of the camera lens varies according to the temperature. This can easily prevent deterioration of resolution.

In addition, a circuit design for compensating for an offset with respect to the output (ie, Hall voltage) of the fourth Hall sensor 1153b can be easily made.

Also, according to an embodiment, a portion of the tilting guide part 1141 relative to the outer surface of the fourth holder of the holder 1131 may be located outside the outer surface of the fourth holder.

The tilting guide part 1141 may be seated in the fourth seating groove 1131S4a based on the base, excluding the first protrusion PR1 and the second protrusion PR2. In other words, the length of the base in the third direction (Z-axis direction) may be smaller than the length of the fourth seating groove 1131S4a in the third direction (Z-axis direction). With this configuration, miniaturization can be easily achieved.

In addition, the maximum length of the tilting guide part 1141 in the third direction (Z-axis direction) may be greater than the length of the fourth seating groove 1131S4a in the third direction (Z-axis direction). Therefore, as described above, the end of the second protrusion PR2 may be positioned between the outer surface of the fourth holder and the first member 1126 . That is, at least a portion of the second protrusion PR2 may be positioned in a direction opposite to the third direction (Z-axis direction) of the holder 1131 . In other words, the holder 1131 may be spaced a predetermined distance from the end of the second protrusion PR2 (the portion in contact with the second protrusion groove) in the third direction (Z-axis direction).

With this configuration, since the second member 1131a is positioned inside or surrounded by the first member 1126, space efficiency can be improved and miniaturization can be realized. Furthermore, even when driving (tilting or rotating the mover 1130) by electromagnetic force is performed, the second member 1131a does not protrude outside the first member 1126, so that contact with surrounding elements can be blocked. Thus, reliability can be improved.

In addition, a predetermined separation space may exist between the second magnetic body 1142 and the first magnetic body 1143 . In other words, the second magnetic body 1142 and the first magnetic body 1143 may face each other with the same polarity.

8 is a perspective view of a second camera actuator according to an embodiment, FIG. 9 is an exploded perspective view of the second camera actuator according to an embodiment, FIG. 10A is a cross-sectional view taken along line DD′ in FIG. 8, and FIG. 10B is an embodiment. is a perspective view illustrating a first optical drive unit, a moving assembly, and first and second guide units in a second camera actuator according to , and FIG. 10C is a view illustrating movement of a first lens assembly in a second camera actuator according to an embodiment, 10D is a graph illustrating a return force of a second lens assembly in a second camera actuator according to an embodiment;

10E is a graph illustrating a return force of a third lens assembly in a second camera actuator according to an embodiment.

Referring to FIGS. 8 to 10A , the second camera actuator 1200 (or camera device or zoom lens transport device or zoom lens transport device or lens transport device) according to the embodiment includes a lens unit 1220 and a second housing 1230 , A first optical driving unit 1250, a base unit 1260, a second substrate unit 1270, and a bonding member 1280 may be included. Furthermore, the second camera actuator 1200 may further include a second shield can (not shown), an elastic part (not shown), and a bonding member (not shown).

Also, as will be described later, the lens group can move along the optical axis direction. Also, the lens group may move along the optical axis direction by being combined with the lens assembly. At this time, the second camera actuator may include a moving part that moves in the optical axis direction like a lens group and a fixed part that is relatively fixed and does not move along the optical axis direction unlike the moving part. In this embodiment, the moving unit may include a lens assembly (eg, first and second lens assemblies) and a first optical driving magnet (first and second driving magnets). The fixing unit may include a second housing, a second substrate unit, a first optical driving coil, and a hall sensor. Furthermore, a driving magnet may be disposed on one of the moving unit and the stationary unit, and a driving coil may be disposed on the other. Corresponding to this description, the movement distance of the lens assembly to be described below may correspond to the movement distance of the moving unit.

The second shield can (not shown) is located in one area (eg, the outermost side) of the second camera actuator 1200, and the following components (lens unit 1220, second housing 1230, first It may be positioned so as to surround the optical driving unit 1250, the base unit 1260, the second substrate unit 1270, and the image sensor IS.

The second shield can (not shown) may block or reduce electromagnetic waves generated from the outside. Accordingly, the occurrence of malfunction in the first optical driving unit 1250 may be reduced.

The lens unit 1220 may be located in a second shield can (not shown). The lens unit 1220 may move along the third direction (Z-axis direction or optical axis direction). Accordingly, the aforementioned AF function or zoom function may be performed.

Also, the lens unit 1220 may be positioned within the second housing 1230 . Accordingly, at least a portion of the lens unit 1220 may move along the optical axis direction or the third direction (Z-axis direction) within the second housing 1230 .

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

First, the lens group 1221 may include at least one lens. In addition, although the number of lens groups 1221 may be plural, hereinafter, only one will be described.

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

As an example, the lens group 1221 may include a first lens group 1221a, a second lens group 1221b, and a third lens group 1221c. The first lens group 1221a, the second lens group 1221b, and the third lens group 1221c may be sequentially disposed along the optical axis direction. Furthermore, the lens group 1221 may further include a fourth lens group 1221d. The fourth lens group 1221d may be disposed at the rear end of the third lens group 1221c.

The first lens group 1221a may be coupled to and fixed to the 2-1 housing. In other words, the first lens group 1221a may not move along the optical axis direction. Accordingly, the 2-1 housing is a fixed group that does not move, and may be a 'first lens assembly'. Also, the first lens assembly 1222a to be described later becomes a 'second lens assembly' by the 2-1 housing and may be a moving group. Also, the second lens assembly 1222b becomes a 'third lens assembly' and may be a moving group. That is, along the optical axis direction, the fixed group/movable group/movable group is 'the 2-1 housing/first lens assembly 1222a/second lens assembly 1222b' or 'first lens assembly/second lens assembly'. /Third lens assembly'. Alternatively, the camera device may include only a moving group/moving group without a fixed group in the second camera actuator. That is, it may be formed of a first lens assembly 1222a/second lens assembly 1222b to be described later. Hereinafter, '2-1 housing/first lens assembly 1222a/second lens assembly 1222b' will be described as reference.

The second lens group 1221b may be coupled to the first lens assembly 1222a to move in a third direction or a light-side direction. Magnification adjustment may be performed by moving the first lens assembly 1222a and the second lens group 1221b.

The third lens group 1221c may be combined with the second lens assembly 1222b to move in the third direction or the optical axis direction. Focus adjustment or auto focusing may be performed by moving the third lens group 1221 .

However, this is not limited to the number of lens groups, and the aforementioned fourth lens group 1221d may not exist, or additional lens groups other than the fourth lens group 1121d may be further disposed.

The moving assembly 1222 may include an opening area surrounding the lens group 1221 . The moving assembly 1222 is used interchangeably with the lens assembly. The moving assembly 1222 or the lens assembly may move along the direction of the gwangchun (Z-axis direction) within the second housing 1230 . Also, the moving assembly 1222 may be combined with the lens group 1221 by various methods. In addition, the moving assembly 1222 may include a groove on a side surface, and may be coupled to the first magnet 1252a and the second magnet 1252b through the groove. A coupling member or the like may be applied to the groove.

Also, the moving assembly 1222 may be coupled with elastic parts (not shown) at the top and rear ends. Accordingly, the moving assembly 1222 may be supported by an elastic part (not shown) while moving in the third direction (Z-axis direction). That is, while the position of the moving assembly 1222 is maintained, it may be maintained in the third direction (Z-axis direction). The elastic part (not shown) may be formed of various elastic elements such as leaf springs.

The moving assembly 1222 may be located in the second housing 1230 and include a first lens assembly 1222a and a second lens assembly 1222b.

An area where the third lens group is seated in the second lens assembly 1222b may be located at the rear end of the first lens assembly 1222a. In other words, the area where the third lens group 1221c is seated in the second lens assembly 1222b may be located between the area where the second lens group 1221b is seated in the first lens assembly 1222a and the image sensor. there is.

The first lens assembly 1222a and the second lens assembly 1222b may face the first guide part G1 and the second guide part G2, respectively. The first guide part G1 and the second guide part G2 may be located on the first side and the second side of the second housing 1230 to be described later.

A first optical driving magnet may be seated on outer surfaces of the first lens assembly 1222a and the second lens assembly 1222b. For example, a second magnet 1252b may be seated on an outer surface of the second lens assembly 1222b. A first magnet 1252a may be seated on an outer surface of the first lens assembly 1222a. In this specification, the first lens assembly 1222a may be used interchangeably with a 'first bobbin' and a 'first lens carrier'. The second lens assembly 1222b may be used interchangeably as a 'second bobbin' and a 'second lens carrier'.

The second housing 1230 may be disposed between the lens unit 1220 and a second shield can (not shown). Also, the second housing 1230 may be disposed to surround the lens unit 1220 .

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

Also, the 2-2 housing 1232 may be located at the rear end of the 2-1 housing 1231 . The lens unit 1220 may be seated inside the 2-2 housing 1232 .

A hole may be formed at a side of the second housing 1230 (or the 2-2 housing 1232). A first coil 1251a and a second coil 1251b may be disposed in the hole. The hole may be positioned to correspond to the groove of the moving assembly 1222 described above. In this case, the first coil 1251a and the second coil 1251b may be plural.

As an example, the second housing 1230 (in particular, the 2-2 housing 1232) may include a first side portion 1232a and a second side portion 1232b. The first side portion 1232a and the second side portion 1232b may be positioned to correspond to each other. For example, the first side portion 1232a and the second side portion 1232b may be symmetrically disposed with respect to the third direction. A first optical driving coil 1251 may be positioned on the first side portion 1232a and the second side portion 1232b. In addition, the second substrate portion 1270 may be seated on outer surfaces of the first side portion 1232a and the second side portion 1232b. In other words, the first substrate 1271 may be positioned on an outer surface of the first side portion 1232a, and the second substrate 1272 may be positioned on an outer surface of the second side portion 1232b.

Furthermore, the first guide part G1 and the second guide part G2 are the first side part 1232a and the second side part 1232b of the second housing 1230 (in particular, the 2-2 housing 1232). can be located in

The first guide part G1 and the second guide part G2 may be positioned to correspond to each other. For example, the first guide part (G1) and the second guide part (G2) may be located opposite to each other based on the third direction (Z-axis direction). In addition, at least a portion of the first guide portion G1 and the second guide portion G2 may overlap each other in the second direction (Y-axis direction).

The first guide part G1 and the second guide part G2 may include at least one groove (eg, a guide groove) or a recess. Also, the first ball B1 or the second ball B2 may be seated in the groove or the recess. Thus, the first ball (B1) or the second ball (B2) can move in the third direction (Z-axis direction) in the guide groove of the first guide portion (G1) or the guide groove of the second guide portion (G2). there is.

Alternatively, the first ball B1 or the second ball B2 is formed inside the rail formed inside the first side part 1232a of the second housing 1230 or inside the second side part 1232b of the second housing 1230. It can move in a third direction along the rail.

Accordingly, the first lens assembly 1222a and the second lens assembly 1222b may move in the third direction or the optical axis direction. In this case, the second lens assembly 1222b may be disposed closer to or closer to the image sensor than the first lens assembly 1222a.

According to the embodiment, the first ball B1 may contact the first lens assembly 1222a. The second ball B2 may contact the second lens assembly 1222b. Therefore, depending on the location, the first ball B1 may overlap at least a portion of the second ball B2 along the first direction (X-axis direction).

In addition, the first guide part G1 and the second guide part G2 may include first guide grooves GG1a and GG2a facing the first recess RS1. In addition, the first guide part G1 and the second guide part G2 may include second guide grooves GG1b and GG2b facing the second recess RS2. The first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may be grooves extending in a third direction (Z-axis direction). Also, the first guide grooves GG1a and GG2a and the second guide grooves GG1b and GG2b may have different shapes. For example, the first guide grooves GG1a and GG2a may have inclined side surfaces, and the second guide grooves GG1b and GG2b may have side surfaces perpendicular to the bottom surface.

Also, the first guide grooves GG1a and GG2b or the second guide grooves GG1b and GG2b may be plural. In addition, a plurality of balls having at least some different diameters may be positioned in the plurality of guide grooves.

The second magnet 1252b may be positioned to face the second coil 1251b. Also, the first magnet 1252a may be positioned to face the first coil 1251a.

For example, at least one of the first coil 1251a and the second coil 1251b may include a plurality of coils. For example, the first optical drive coil 1251 may include a first sub coil SC1 and a second sub coil SC2. The first sub-coil SC1 and the second sub-coil SC2 may be disposed along the optical axis direction (Z-axis direction). For example, the first sub coil SC1 and the second sub coil SC2 may be sequentially disposed in the optical axis direction. Also, the first sub coil SC1 may be disposed closest to the first camera actuator among the first sub coil SC1 and the second sub coil SC2. In this embodiment, the second camera actuator or the first optical driving unit may include a first driving unit and a second driving unit. The first driver may provide a driving force for moving the first lens assembly 1222a along the optical axis direction. The first driver may include a first coil 1251a and a first magnet 1252a. Also, the first driving unit may include a first driving coil and a first driving magnet. Accordingly, the first coil 1251a is described interchangeably with a 'first driving coil'. In addition, the first magnet 1252a is used interchangeably with 'first driving magnet'.

The second driver may provide a driving force for moving the second lens assembly 1222b along the optical axis direction. The second driver may include a second coil 1251b and a second magnet 1252b.

Also, the second driving unit may include a second driving coil and a second driving magnet. Accordingly, the second coil 1251b will be described interchangeably with a 'second driving coil'. In addition, the second magnet 1252b is used interchangeably with 'the second driving magnet'.

A description will be made based on this below.

The elastic part (not shown) may include a first elastic member (not shown) and a second elastic member (not shown). A first elastic member (not shown) may be coupled to the upper surface of the moving assembly 1222 . The second elastic member (not shown) may be coupled to the lower surface of the moving assembly 1222 . In addition, the first elastic member (not shown) and the second elastic member (not shown) may be formed as leaf springs as described above. Also, the first elastic member (not shown) and the second elastic member (not shown) may provide elasticity for the movement of the moving assembly 1222 . However, it is not limited to the above-mentioned position, and the elastic part may be disposed at various positions.

Also, the first optical driving unit 1250 may provide a driving force for moving the lens unit 1220 in a third direction (Z-axis direction). The first optical driving unit 1250 may include a first optical driving coil 1251 and a first optical driving magnet 1252 . The first optical driving coil 1251 and the first optical driving magnet 1252 may face each other. For example, the first driving coil 1251a and the first driving magnet 1252a may face each other. Also, the second driving coil 1251b and the second driving magnet 1252B may face each other. The first drive coil 1251a may be disposed on one side of the second housing along the second direction, and the second drive coil 1251a may be disposed on the other side of the second housing along the second direction.

Furthermore, the first optical driving unit 1250 may further include a third hall sensor unit. The third hall sensor unit 1253 includes at least one first hall sensor 1253a and at least one second hall sensor 1253b, and may be located inside or outside the first optical drive coil 1251.

The moving assembly may move in the third direction (Z-axis direction) by the electromagnetic force formed between the first optical driving coil 1251 and the first optical driving magnet 1252 .

The first optical drive coil 1251 may include a first coil 1251a and a second coil 1251b. Also, as described above, the first coil 1251a and the second coil 1251b may include a plurality of sub coils. Also, the first coil 1251a and the second coil 1251b may be disposed in a hole formed at a side of the second housing 1230 . Also, the first coil 1251a and the second coil 1251b may be electrically connected to the second substrate 1270 . Accordingly, the first coil 1251a and the second coil 1251b may receive current or the like through the second substrate 1270 .

Also, the first optical driving coil 1251 may be coupled to the second substrate 1270 through a yoke or the like.

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

The first optical drive magnet 1252 may include a first magnet 1252a and a second magnet 1252b.

Also, the first magnet 1252a may face the first sub coil SC1a and the second sub coil SC2a. The second magnet 1252b may face the third sub coil SC1b and the fourth sub coil SC2b. The first sub-coil SC1a may be positioned to overlap the third sub-coil SC1b in the second direction. The second sub coil SC2a may be positioned to overlap the fourth sub coil SC2b in the second direction. As such, the first magnet 1252a and the second magnet 1252b may be equally disposed to face the two sub coils. In this specification, the first sub-coils SC1a and SC1b and the second sub-coils SC2a and SC2b will be described as reference. However, within the specification, sub-coils that drive the second lens assembly may be referred to as third sub-coils and fourth sub-coils.

The first driving coil 1251a may include a first sub coil SC1a and a second sub coil SC2a. Also, the second driving coil 1251b may include a third sub coil SC1b and a fourth sub coil SC2b.

Also, the first sub-coil SC1a and the second sub-coil SC2a may be disposed side by side along the optical axis direction (Z-axis direction). Also, the first sub-coil SC1a and the second sub-coil SC2a may be spaced apart from each other in the optical axis direction. The first sub coil SC1a and the second sub coil SC2a may be connected in parallel to each other. For example, either one of one end and the other end of the first sub coil SC1a may be connected to one of one end and the other end of the second sub coil SC2a through a node. Also, the other one of the one end and the other end of the first sub coil SC1a may be connected to the other one of the one end and the other end of the second sub coil SC2a through a different node. That is, the current applied to the first sub coil SC1a and the second sub coil SC2a may be distributed to each sub coil. As a result, the first sub coil SC1a and the second sub coil SC2a are electrically connected in parallel, so that heat generation can be reduced.

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

Also, the third sub-coil SC1b and the fourth sub-coil SC2b may be disposed side by side along the optical axis direction (Z-axis direction). Also, the third sub coil SC1b and the fourth sub coil SC2b may be spaced apart from each other in the optical axis direction.

The third sub coil SC1b and the fourth sub coil SC2b may be connected in parallel to each other. For example, either one of one end and the other end of the third sub coil SC1b may be connected to one of one end and the other end of the fourth sub coil SC2b through a node.

The first magnet 1252a and the second magnet 1252b may be disposed in the aforementioned groove of the moving assembly 1222 and may be positioned to correspond to the first coil 1251a and the second coil 1251b. Also, the first optical drive magnet 1252 may be combined with the first and second lens assemblies (or moving assemblies) together with a yoke described later.

Also, the first magnet 1252a may have a first pole on a first surface BSF1 facing the first optical driving coil (eg, the first coil). Also, the first magnet 1252a may have a second pole on a second surface BSF2 opposite to the first surface BSF1. The second magnet 1252b may have a first pole on a first surface BSF1 facing the first optical driving coil (eg, the second coil). Also, the second magnet 1252b may have a second pole on a second surface BSF2 opposite to the first surface BSF1. The first pole may be either an N pole or an S pole. And the second pole may be the other one of the N pole and the S pole.

The base part 1260 may be positioned between the lens part 1220 and the image sensor IS. A component such as a filter may be fixed to the base part 1260 . Also, the base part 1260 may be disposed to surround the image sensor described above. With this configuration, since the image sensor is freed from foreign substances and the like, the reliability of the device can be improved. However, in some drawings below, it is removed and described.

Also, the second camera actuator 1200 may be a zoom actuator or an auto focus (AF) actuator. For example, the second camera actuator may support one or a plurality of lenses and perform an auto focusing function or a zoom function by moving the lens according to a control signal from a predetermined control unit.

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

In addition, the second camera actuator may include a plurality of lens assemblies. For example, the second camera actuator may include at least one of a third lens assembly (not shown) and a guide pin (not shown) in addition to the first lens assembly 1222a and the second lens assembly 1222b. . In this regard, the above information may be applied. Accordingly, the second camera actuator may perform a high-magnification zooming function through the first optical driver. For example, the first lens assembly 1222a and the second lens assembly 1222b may be moving lenses that move through the first optical driving unit and a guide pin (not shown), and may be a third lens assembly. (not shown) may be a fixed lens, but is not limited thereto. For example, the third lens assembly (not shown) may perform the function of a focator that forms light at a specific location, and the first lens assembly is a third lens assembly (not shown) that is a concentrator. It can perform the function of a variator that re-images the image formed in another place. Meanwhile, in the first lens assembly, a change in magnification may be large because the distance or image distance to the subject is greatly changed, and the first lens assembly, which is a variable magnification, may play an important role in changing the focal length or magnification of the optical system. On the other hand, the image formed by the first lens assembly, which is a variable magnifier, may be slightly different depending on the location. Accordingly, the second lens assembly may perform a position compensation function for an image formed by the variable magnifier. For example, the second lens assembly may perform a compensator function to accurately form an image formed by the second lens assembly 1222b, which is a variable magnification, at an actual image sensor position. However, the configuration of this embodiment will be described with reference to the following drawings.

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

The second substrate unit 1270 may contact the side of the second housing. For example, the second substrate unit 1270 is located on the outer surface (first outer surface) and the outer surface (second outer surface) of the first side of the second housing, particularly the 2-2 housing, , It may be in contact with the first outer surface and the second outer surface.

In addition, the second camera actuator 1200 may include a housing yoke YK disposed on at least one of an upper part and a lower part of the 2-2 housing 1232 (or second housing). The housing yoke YK may include a first housing yoke HY1 and a second housing yoke HY2.

The first housing yoke HY1 and the second housing yoke HY2 may be positioned outside the upper and lower surfaces of the 2-2 housing 1232 . Accordingly, the first housing yoke HY1 and the second housing yoke HY2 have magnetic forces generated by the first coil 1251a, the second coil 1251b, the first magnet 1252a, and the second magnet 1252b. can be blocked from propagating to the facing element. For example, the magnetic force generated by the first coil 1251a and the first magnet 1252a by the first housing yoke HY1 and the second housing yoke HY2 is applied to the second coil 1251b and the second magnet 1252b. ) may be reduced.

Referring to FIGS. 10B and 10C , the first lens assembly 1222a may move along the optical axis direction (Z-axis direction) within the second housing. The second lens assembly 1222b may move along the optical axis direction (Z-axis direction) within the second housing.

A first mark MK1 may be positioned on an upper surface of the first lens assembly 1222a. A second mark MK2 may be positioned on an upper surface of the second lens assembly 1222b. The number of first marks MK1 may be plural. The number of second marks MK2 may be plural. The plurality of first marks MK1 may be arranged side by side along the optical axis direction. The plurality of second marks MK2 may be arranged side by side along the optical axis direction. Also, the first mark MK1 and the second mark MK2 may be recognized by vision inspection. Accordingly, positions or intervals between the first lens assembly 1222a and the second lens assembly 1222b may be recognized by the first mark MK1 and the second mark MK2. In addition, by recognizing the first mark MK1 and the second mark MK2, it is possible to accurately inspect whether the movement of the first lens assembly 1222a and the second lens assembly 1222b along the optical axis direction is accurately performed. Additionally, an inspection may be performed as to whether optical axes between the first and second lens assemblies are aligned.

The first coil 1251a can be easily coupled to the circuit board by the outer board yoke. The second coil 1251b can be easily coupled to the circuit board by the outer board yoke.

Also, the first lens assembly 1222a may return to a position determined by an adjacent substrate yoke. That is, the first lens assembly 1222a may be moved to a specific position by restoring force caused by the substrate yoke.

Also, the second lens assembly 1222b may return to a position determined by an adjacent substrate yoke. That is, the second lens assembly 1222b may be moved to a specific position by restoring force caused by the substrate yoke.

Furthermore, the first and second stoppers STP1 and STP2 may block movement of the first lens assembly 1222a and the second lens assembly 1222b in the optical axis direction. That is, the distance between the first and second stoppers STP1 and STP2 in the optical axis direction may be less than or equal to the movement range of the first lens assembly 1222a or the second lens assembly 1222b in the optical axis direction. The first stopper STP1 may be disposed adjacent to the first camera actuator compared to the second stopper STP2. Also, the second stopper STP2 may be positioned adjacent to the image sensor compared to the first stopper STP1.

Referring to FIG. 10D, the second lens assembly 1222b is in an initial position when the first lens assembly 1222a does not exist ('corresponds to the absence of group 2'. Also, the first magnet and the first coil do not exist). (Approximately -3.75mm), the restoring force may increase or decrease. That is, the sign of the magnitude of the restoring force may be opposite (positive/negative) based on the initial position.

However, the second lens assembly 1222b has an initial position (about -3.75 mm) when the first lens assembly 1222a exists ('corresponds to the existence of group 2'. In addition, the first magnet and the first coil also exist). Based on , the restoring force may not increase or decrease. In this case, the movement range of the second lens assembly 1222b along the optical axis direction may be about 7.5 mm. That is, the influence of the first magnet and the first coil may be applied to the second lens assembly 1222b. That is, the second magnet coupled to the second lens assembly 1222b may be influenced by the first magnet and the first coil as well as the substrate coil. Accordingly, the restoring force of the second lens assembly 1222b may change depending on whether or not the first lens assembly 1222a exists. As such, either one of the first lens assembly and the second lens assembly may exert a magnetic force on a magnet attached to either one or a coil (or Hall sensor) attached to the other magnet or coil.

Similarly, referring to FIG. 10E , the first lens assembly 1222a does not exist when the second lens assembly 1222b does not exist ('corresponds to the absence of group 3'. Also, the second magnet and the second coil do not exist). Based on the initial position (about -3.75mm), the restoring force may increase or decrease. That is, the sign of the magnitude of the restoring force may be opposite (positive/negative) based on the initial position.

However, the first lens assembly 1222a has an initial position (about -3.75mm) when the second lens assembly 1222b exists ('corresponds to group 3'. In addition, the second magnet and the second coil also exist). Based on , the restoring force may not increase or decrease. In this case, the movement range of the first lens assembly 1222a along the optical axis direction may be about 5 mm. That is, an influence by the second magnet and the second coil may be applied to the first lens assembly 1222a. That is, the first magnet coupled to the first lens assembly 1222a may be influenced by the second magnet and the second coil as well as the substrate coil. Accordingly, the restoring force of the first lens assembly 1222a may change depending on whether or not the second lens assembly 1222b exists. As such, either one of the first lens assembly and the second lens assembly may exert a magnetic force on a magnet attached to either one or a coil (or Hall sensor) attached to the other magnet or coil.

In the present embodiment, a structure in which a yoke is coupled to at least one of the first lens assembly and the second lens assembly, and the magnet is seated on the yoke and the yoke surrounds the magnet is disclosed in order to reduce the effect of the magnetic force. A detailed description of this will be given later.

As described above, in the second camera actuator according to the embodiment below, the influence of the magnetic force by the magnet (or coil) of another lens assembly on the movement of one lens assembly can be suppressed.

FIG. 11A is an exploded perspective view related to the driving of the first lens assembly, FIG. 11B is a perspective view in which each component is combined in FIG. 11A, FIG. 11C is a perspective view of the first yoke and the first magnet in FIG. 11B, and FIG. 11D is 11C is a top view, FIG. 11E is a perspective view of a first yoke according to an embodiment, FIG. 11F is a side view of a first yoke according to an embodiment, and FIG. 11G is a view of a first yoke according to a modified example. 11H is a diagram of a first yoke according to another embodiment, FIG. 11I is a diagram of a first yoke according to another embodiment, FIG. 11J is a diagram of a first yoke according to another embodiment, and FIG. 11K is another diagram of a first yoke according to another embodiment. It is a drawing of a first yoke according to another embodiment, and FIG. 11L is a drawing of a first yoke according to another embodiment.

And Figure 12a is an exploded perspective view related to the driving of the second lens assembly, Figure 12b is a perspective view of each component coupled in Figure 12a, Figure 12c is a perspective view of the second yoke and the second magnet in Figure 12b, Figure 12d is a top view of FIG. 12c, FIG. 12e is a perspective view of a second yoke according to an embodiment, and FIG. 12f is a perspective view of a first yoke and a second yoke according to an embodiment.

Referring to FIGS. 11A and 12A , the electromagnetic force will be described below based on one coil. In the camera device according to the embodiment, electromagnetic force DEM1 between the first magnet 1252a and the first coil 1251a is generated so that the first lens assembly 1222a is horizontal to the optical axis, that is, in the third direction (Z-axis direction) or It can move along the rail located on the inner surface of the housing through the first ball (B1) in a direction opposite to the third direction. At this time, the first magnet 1252a and the second magnet 1252b do not move to a region facing the edges of the first and second sub coils. Accordingly, the electromagnetic force is formed based on the flow of current in the adjacent regions of the first sub-coil and the second sub-coil.

Specifically, in the camera device according to the embodiment, the first magnet 1252a may be provided in the first lens assembly 1222a by, for example, a monopolar magnetization method. For example, in the embodiment, a surface (first surface) facing the outer surface of the first magnet 1252a may be an S pole. Also, an outer surface of the first magnet 1252a may be a surface facing the first coil 1251a. A surface opposite to the first surface may be an N pole. Accordingly, only one of the N pole and the S pole may be positioned to face the first coil 1251a. Here, the description will be made based on the fact that the outer surface of the first magnet 1252a is the S pole. Furthermore, the first coil 1251a includes a plurality of sub-coils, and currents may flow in opposite directions in the plurality of sub-coils. That is, in a region adjacent to the second sub-coil SC2a in the first sub-coil SC1a, the same current as 'DE1' may flow.

In other words, the first region of the first sub-coil SC1a and the second region of the second sub-coil SC2a may have the same current direction. The first region of the first sub-coil SC1a overlaps 1 driving magnet 1252a in a direction perpendicular to the optical axis direction (second direction) and is disposed perpendicular to the optical axis direction (eg, disposed along the first direction). ) area. The second region of the second sub-coil Sc2a overlaps the first driving magnet 1252a in a direction perpendicular to the optical axis direction (second direction) and is disposed perpendicular to the optical axis direction (eg, disposed along the first direction). ) area.

In addition, as shown, in the embodiment, magnetic force is applied in the second direction (Y-axis direction) from the S pole of the first magnet 1252a, and current is applied in the first direction (X-axis direction) in the first coil 1251a. When DE1 flows, the electromagnetic force DEM1 may act in the third direction (Z-axis direction) according to the interaction of the electromagnetic force (eg, Fleming's left hand rule).

At this time, since the first coil 1251a is fixed to the side of the second housing, the first lens assembly 1222a on which the first magnet 1252a is disposed is Z by the electromagnetic force DEM1 according to the current direction. It can move in the opposite direction to the axial direction. That is, the first optical driving magnet may move in an opposite direction to the electromagnetic force applied to the first optical driving coil. In addition, the direction of the electromagnetic force may be changed according to the current of the coil and the magnetic force of the magnet.

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

The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 in which the first ball B1 is seated. Also, the first lens assembly 1222a or the second lens assembly 1222b may include a second recess RS2 in which the second ball B2 is seated. The first recess RS1 and the second recess RS2 may be plural. The length of the first recess RS1 may be preset in the optical axis direction (Z-axis direction). Also, the length of the second recess RS2 may be preset in the optical axis direction (Z axis direction). Accordingly, the moving distance of the first ball B1 and the second ball B2 in the optical axis direction within each recess may be adjusted. In other words, the first recess RS1 or the second recess RS2 may be a stopper for the first and second balls B1 and B2.

In the camera device according to the embodiment, the second magnet 1252b may be provided in the second lens assembly 1222b by, for example, a monopolar magnetization method.

Also, an outer surface of the first magnet 1252a may be a surface facing the first coil 1251a. A surface opposite to the first surface may be an N pole. Accordingly, only one of the N pole and the S pole may be positioned to face the first coil 1251a. Here, the description will be made based on the fact that the outer surface of the first magnet 1252a is the S pole. Furthermore, the first coil 1251a includes a plurality of sub-coils, and currents may flow in opposite directions in the plurality of sub-coils. That is, in a region adjacent to the second sub-coil SC2a in the first sub-coil SC1a, the same current as 'DE1' may flow.

For example, in the embodiment, either N pole or S pole of the second magnet 1252b may be positioned to face the second coil 1251b. In the embodiment, a surface (first surface) facing the outer surface of the second magnet 1252b may be an S pole. Also, the first surface may be an N pole. Hereinafter, as shown, the first surface will be described based on the N pole.

Furthermore, the second coil 1251b includes a plurality of sub-coils, and currents may flow in opposite directions in the plurality of sub-coils. That is, in a region adjacent to the second sub-coil SC2b in the first sub-coil SC1b, the same current as 'DE2' may flow.

In the embodiment, the magnetic force DM2 is applied from the first surface (N pole) of the second magnet 1252b in the second direction (Y axis direction), and the second coil 1251b corresponding to the N pole in the first direction When current DE2 flows in (X-axis direction), electromagnetic force DEM2 may act in a third direction (Z-axis direction) according to the interaction of electromagnetic forces (eg, Fleming's left hand rule).

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

Furthermore, a first blocking member BM1 may be disposed on an inner surface of the first sub-coil SC1a. Also, a second blocking member BM2 may be disposed on an inner surface of the fourth sub-coil SC2b.

1 blocking member BM1 may be disposed within the first coil 1251a. The first blocking member BM1 may be positioned between the inner surface of the first coil 1251a and the first hall sensor. For example, the first blocking member BM1 may be disposed on an inner surface of the first coil 1251a. The first blocking member BM1 may be made of a magnetic shielding material. For example, the first blocking member BM1 may be made of a magnetic material. Also, the first blocking member BM1 may be a yoke. With this configuration, transfer of magnetic force generated by the first coil 1251a and the second magnetic body 1252b to the first hall sensor disposed in the first coil 1251a can be easily blocked. Accordingly, position measurement by the first Hall sensor can be performed more accurately.

The second blocking member BM2 may be disposed on an inner surface of the second coil 1251b. The second blocking member BM2 may be made of a magnetic shielding material. For example, the second blocking member BM2 may be made of a magnetic material. Also, the second blocking member BM2 may be a yoke. According to this configuration, the second Hall sensor disposed in the second coil 1251b is generated by the second coil 1251b and the first magnet 1252a. The transfer of magnetic force can be easily blocked. Accordingly, position measurement by the second Hall sensor can be performed more accurately.

In an embodiment, the first blocking member BM1 and the second blocking member BM2 may not overlap each other in the horizontal direction. That is, the first blocking member BM1 and the second blocking member BM2 may be located in sub-coils that do not face each other.

As a modified example, the first blocking member BM1 and the second blocking member BM2 may be located in sub-coils facing each other.

Referring to FIG. 11B , the aforementioned first mark MK1 may be present on the upper surface of the first lens assembly 1222a. In addition, a body portion having a lens hole into which the second lens group 12221b is inserted and wing portions facing the first guide portion may exist on the side of the body portion. The aforementioned first recess may be present on an outer surface of the wing unit. A ball may be seated in the first recess RS1.

First, in the second camera actuator or camera device according to the embodiment, at least one of the first lens assembly 1222a and the second lens assembly 1222b may have a yoke. For example, the first lens assembly 1222a may have a first yoke so that magnetic force by the first magnet is not transferred to the second lens assembly. Conversely, the second lens assembly may have a second yoke so that magnetic force by the second magnet is not transferred to the first lens assembly. And the camera device may include a first yoke. Also, the camera device may include a second yoke. Also, the camera device may include both the first yoke and the second yoke. A description of the second yoke will be given later.

A first yoke YK1 may be positioned on the wing of the first lens assembly 1222a. The first yoke YK1 may be coupled to the wings of the first lens assembly 1222a. For example, the first lens assembly 1222a and the first yoke YK1 may be coupled to each other by a bonding member (eg, epoxy). Also, it may be coupled to the first lens assembly 1222a by the coupling part of the first yoke YK1.

Furthermore, the first magnet 1252a may be seated on the first yoke YK1. As described above, the first surface BSF1 of the first magnet 1252a may face the outer side or the first coil as described above. Also, the second surface BSF2 of the first magnet 1252a may contact the bottom surface of the first yoke YK1. Alternatively, the second surface BSF2 of the first magnet 1252a may come into contact with a bottom portion described later.

The first magnet 1252a may be seated on the first yoke YK1 and at least partially surrounded by the first yoke YK1 on at least five surfaces. In other words, the outer side of the first magnet 1252a, that is, the entire first surface BSF1 may be exposed to the outside. In contrast, at least a portion of the first magnet 1252a except for the first surface BSF1 may be covered by the first yoke YK1. Alternatively, surfaces of the first magnet 1252a other than the first surface BSF1 may contact or face each region of the first yoke YK1.

Additionally, in this embodiment, the first lens assembly 1222a will be described based on having protrusions or assembly protrusions 1222pr1 and 1222pr2. Furthermore, the protrusion is a protrusion on an outer surface (hereinafter, an upper surface or a lower surface) of any one of the first lens assembly 1222a and the second housing (or the 2-2 housing), and the first lens assembly 1222a and the second housing (or the 2-2 housing). Also, the protrusion may be separable from any one of the 1 lens assembly 1222a and the second housing (or the 2-2 housing). For example, the protrusion may include a poron or the like to perform shock absorption.

The protrusions or assembly protrusions 1222pr1 and 1222pr2 may extend in a direction perpendicular to the optical axis direction. For example, the protrusions or assembly protrusions 1222pr1 and 1222pr2 may extend in a first direction or a vertical direction (X-axis direction).

11C to 11F, the first yoke according to the embodiment extends outwardly from the bottom portion SA1 facing the bottom surface of the first magnet 1252a and the bottom portion SA1, and extends in the optical axis direction (Z-axis direction). ), a first side plate portion EA1 facing each other, and a second side plate portion EA2 extending outward from the bottom portion SA1 and facing each other in a vertical direction (X-axis direction). Further, The side plate may include a first side plate and a second side plate. Furthermore, an additional third side plate portion to be described later may be included. The height of the side plates may be equal to or smaller than the heights of the first and second magnets. Therefore, when viewed from the outside, the side plate may not protrude more than the first and second magnets. In other words, portions of the first and second magnets may be exposed by the side plates.

The bottom portion SA1 may contact or face the second surface BSF2 of the first magnet 1252a.

Also, the first side plate portion EA1 may be positioned at an edge of the bottom portion SA1 and connected to the bottom portion SA1. The second side plate portion EA2 may be positioned at an edge of the bottom portion SA1 and connected to the bottom portion SA1.

As an example, the first magnet 1252a may be surrounded by the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 . Alternatively, the first magnet 1252a may be surrounded by the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 . Alternatively, the first magnet 1252a may be covered by the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 . Only one of the side surfaces of the first magnet 1252a may be exposed by the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 . Alternatively, only the entire surface of the first magnet 1252a facing the first coil may be exposed by the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 .

The length of the first side plate part EA1 in the first direction or the vertical direction may be greater than the length of the second side plate part EA2 in the first direction (or vertical direction). Also, the length of the first side plate part EA1 in the third direction or the optical axis direction may be smaller than the length of the second side plate part EA2 in the third direction (or the optical axis direction). Alternatively, the first side plate portion EA1 may be positioned on a short side of the bottom portion SA1. Further, the second side plate portion EA2 may be positioned on a long side (long edge) of the bottom portion SA1.

The first side plate portion EA1 may include a stepped portion ST inclined toward the second side plate portion EA2 at an edge thereof. For example, the first side plate portion EA1 may have a chamfer. With this configuration, the first magnet 1252a disposed on the first yoke YK1 may be easily prevented from falling off. The first side plate part EA1 and the second side plate part EA2 may be connected to each other or may be separated from each other. That is, the first side plate part EA1 and the second side plate part EA2 may form an open loop or a closed loop on the XY plane.

Further, the length L1 of the first yoke YK1 in the optical axis direction or the third direction may be greater than the length L2 of the first magnet 1252a in the optical axis direction or the third direction.

In addition, the length W1 of the first side plate EA1 in the second direction (Y-axis direction) may be less than or equal to the length W2 of the first magnet 1252a in the second direction (Y-axis direction). this

In addition, the length W1 of the second side plate EA2 in the second direction (Y-axis direction) or the horizontal direction may be less than or equal to the length W2 of the first magnet 1252a in the horizontal direction or the second direction.

Accordingly, the outer surface or the first surface BSF1 of the first magnet 1252a may be disposed outside the second side plate part EA2. Alternatively, the outer surface or the first surface BSF1 of the first magnet 1252a may be disposed outside the first side plate part EA1. With this configuration, the magnetic force generated by the first magnet 1252a is prevented from being applied to the Hall sensor (first Hall sensor), the second magnet, the second coil, etc. to the second lens assembly by the first yoke YK1. can In addition, a decrease in electromagnetic force (eg, Lorentz force) formed by the magnetic force generated by the first magnet 1252a together with the first coil can be reduced. Accordingly, a decrease in the driving force of the first driving unit may be prevented.

The first yoke YK1 may include a coupling portion EA3 extending inwardly from the bottom portion SA1. The coupling part EA3 may be located on the long side of the edge of the bottom part SA1.

In addition, as described above, in this specification, the inner side may correspond to a direction toward the optical axis, and the outer side may correspond to a direction away from the optical axis, for example, a direction from the center of the lens group to the outer surface of the lens group.

As an example, the second side plate part EA2 may include a first sub-side plate part SEA1 and a second sub-side plate part SEA2 spaced apart from each other along the optical axis direction. That is, the first sub-side plate SEA1 and the second sub-side plate SEA2 may be spaced apart from each other by a predetermined distance in the optical axis direction.

The coupling part EA3 may be disposed between the first sub-side plate part SEA1 and the second sub-side plate part SEA2. Also, the coupling portion EA3 may extend in a direction different from that of the second side plate portion EA2.

Also, the coupler EA3 may be spaced apart from the first sub-side plate SEA1 by a predetermined distance in the optical axis direction. Also, the coupler EA3 may be spaced apart from the second sub-side plate SEA2 by a predetermined distance in the optical axis direction. With this configuration, formation between the second side plate portion EA2 and the coupling portion EA3 extending in different directions can be easily performed.

The coupler EA3 may at least partially overlap the first lens assembly in a vertical direction. That is, the coupling part EA3 may be disposed in a groove disposed on an outer surface of the wing of the first lens assembly. Accordingly, coupling force between the first yoke YK1 and the first lens assembly may be improved through the coupling portion EA3.

In addition, the first sub-side plate SEA1 and the second sub-side plate SEA2 may have the same length L3 in the optical axis direction (Z-axis direction).

Also, the length L4 of the coupler EA3 in the optical axis direction may be smaller than the length L3 of the second side plate EA2 in the optical axis direction. Also, the length L4 of the coupler EA3 in the optical axis direction may be smaller than the length L4 of the first sub-side plate SEA1 or the second sub-side plate SEA2 in the optical axis direction. With this configuration, it is possible to minimize the magnetic force generated by the first magnet 1252a from being provided to the opposite side from the first yoke YK1 passing between the first sub-side plate SEA1 and the second sub-side plate SEA2. there is.

In addition, the bottom portion SA1 includes a yoke groove IH1 disposed between at least one of the first sub-side plate portion SEA1 and the coupling portion EA3 and between the second sub-side plate portion SEA2 and the coupling portion EA3. can include The yoke groove IH1 may be located between the second side plate part EA2 and the coupling part EA3 at the edge of the bottom part SA1. Also, the yoke groove IH1 may be convex toward the center of the bottom portion SA1.

Furthermore, the coupling part EA3 may be located between the first balls spaced apart from each other. That is, the coupling part EA3 may be positioned between the first balls spaced apart from each other along the optical axis direction. Furthermore, the coupling unit may be positioned between the first recesses RS1 spaced apart from each other along the optical axis direction.

Furthermore, the first yoke YK1 may include a yoke hole YK1h located in the bottom portion SA1. The number of yoke holes YK1h may be plural. A bonding member (eg, epoxy) may be applied through the yoke hole YK1h. Accordingly, coupling force between at least two of the first magnet 1252a, the first yoke YK1, and the first lens assembly may be improved.

The yoke hole YK1h may be disposed on a first imaginary line VL1 that bisects the first yoke YK1 in a vertical direction. For example, the center of the yoke hole YK1h may be located on the first imaginary line VL1.

A plurality of yoke holes YK1h may have the same size as each other. Alternatively, one of the plurality of yoke holes YK1h may be different from the other one. For example, the size of the yoke hole YK1h located at the center may be the smallest.

Furthermore, the coupler EA3 may be disposed on the second imaginary line VL2 bisecting the first yoke YK1 in the optical axis direction (Z-axis direction). Accordingly, even if the magnetic force generated from the first magnet 1252a moves to the opposite side, the maximum distance can be increased.

Referring to FIG. 11G , the description of the first yoke YK1 according to the above-described embodiment may be applied to the first yoke YK1a according to the modified example except for the description below.

In the first yoke YK1a according to the modified example, the first side plate portion EA1 may not be inclined toward the second side plate portion EA2. That is, the first side plate portion EA1 may not have a stepped portion. Accordingly, the distance between the first sub-side plate SEA1 and the coupling part EA3 in the optical axis direction may be smaller than the distance between the first sub-side plate SEA1 and the first side plate part EA1 in the optical axis direction. In addition, the distance between the second sub-side plate SEA2 and the coupling part EA3 in the optical axis direction may be smaller than the distance between the second sub-side plate SA2 and the first side plate part EA1 in the optical axis direction.

Referring to FIG. 11H , the description of the first yoke YK1 according to the above-described embodiment may be equally applied to the first yoke YK1b according to another embodiment, except for the contents described below.

The first sub-side plate SEA1 and the second sub-side plate SEA2 may have different lengths in the optical axis direction.

Furthermore, the coupling part EA3 may be disposed between the first sub-side plate part SEA1 and the second sub-side plate part SEA2, and there may be a plurality of them.

For example, the first sub-side plate may include a 1-1 sub-side plate SEA1 disposed on one side and a 1-2 sub-side plate SEA1′ disposed on the other side. The second sub-side plate may include a 2-1 sub-side plate ESA2 disposed on one side and a 2-2 sub-side plate SEA2′ disposed on the other side. Also, the coupling portion may include a first coupling portion EA3 and a second coupling portion EA3'. The first coupling part EA3 may be disposed between the 1-1 sub-side plate SEA1 and the 2-1 sub-side plate SEA2. Also, the second coupling part EA3' may be disposed between the 1-2 sub-side plate part SEA1' and the 2-2 sub-side plate part SEA2'.

Furthermore, in the first yoke YK1b according to the present embodiment, the 1-1st sub-side plate SEA1 may partially overlap the 1-2nd sub-side plate SEA1′. A part of the 1-2nd sub-side plate SEA1′ may not overlap with the 1-1st sub-side plate SEA1 in the vertical direction (X-axis direction).

Also, the 1-2 sub-side plate portion SEA1′ may overlap the first coupling portion EA3 in a vertical direction. Also, the first coupling portion EA3 may not overlap the second coupling portion EA3' in the vertical direction. That is, the first coupling portion EA3 may be offset from the second coupling portion EA3' in the vertical direction. Also, the 2-1st sub-side plate SEA2 may partially overlap the 2-2nd sub-side plate SEA2′ in the vertical direction. In addition, the 2-1st sub-side plate portion SEA2 may overlap the second coupling portion EA3' in the vertical direction. Also, a part of the 2-1st sub-side plate SEA2 may not overlap with the 2-2nd sub-side plate SEA2′ in the vertical direction.

Also, the coupling part EA3 may not be disposed on the second imaginary line VL2. Furthermore, a plurality of couplers EA3 may not overlap each other in the vertical direction.

Referring to FIG. 11I , the description of the first yoke YK1 according to another embodiment may be applied in the same manner as the first yoke YK1 according to the above-described embodiment except for the contents described below.

A plurality of couplers EA3 may be disposed spaced apart from each other along the optical axis direction. Accordingly, the plurality of coupling parts EA3 disposed on one side of the bottom part SA1 may be spaced apart from each other in the optical axis direction. A third side plate portion EA4 connected to the edge of the bottom portion SA1 and extending outward may be disposed between the plurality of coupling portions EA3.

A plurality of third side plate portions EA4 may be disposed to face each other in the optical axis direction.

Further, in the first yoke YK1c, a yoke groove convex along the first imaginary line VL1 may be further disposed between the third side plate portion EA4 and the coupling portion EA3.

Referring to FIG. 11J , the description of the first yoke YK1 according to the above-described embodiment may be equally applied to the first yoke YK1d according to another embodiment, except for the contents described below.

The first sub-side plate SEA1 and the second sub-side plate SEA2 may have different lengths in the optical axis direction.

Furthermore, the coupling part EA3 may be disposed between the first sub-side plate part SEA1 and the second sub-side plate part SEA2, and there may be a plurality of them. The plurality of couplers EA3 may be disposed to face each other in the optical axis direction.

For example, the first sub-side plate may include a 1-1 sub-side plate SEA1 disposed on one side and a 1-2 sub-side plate SEA1′ disposed on the other side. The second sub-side plate may include a 2-1 sub-side plate ESA2 disposed on one side and a 2-2 sub-side plate SEA2′ disposed on the other side. Also, the coupling portion may include a first coupling portion EA3 and a second coupling portion EA3'. The first coupling part EA3 may be disposed between the 1-1 sub-side plate SEA1 and the 2-1 sub-side plate SEA2. Also, the second coupling part EA3' may be disposed between the 1-2 sub-side plate part SEA1' and the 2-2 sub-side plate part SEA2'.

Furthermore, in the first yoke YK1b according to the present embodiment, the 1-1st sub-side plate SEA1 may overlap the 1-2nd sub-side plate SEA1′. The length of the 1-2 sub-side plate SEA1′ in the optical axis direction may be the same as that of the 1-1 sub-side plate SEA1 in the optical axis direction.

Also, the 1-2 sub-side plate portion SEA1′ may not overlap the first coupling portion EA3 in a vertical direction. Also, the first coupling portion EA3 may overlap the second coupling portion EA3′ in a vertical direction.

Also, the 2-1st sub-side plate SEA2 may overlap with the 2-2nd sub-side plate SEA2′ in a vertical direction. In addition, the 2-1st sub-side plate portion SEA2 may not overlap with the second coupling portion EA3' in the vertical direction. The length of the 2-1st sub-side plate SEA2 in the optical axis direction may be the same as that of the 2-2nd sub-side plate SEA2′ in the optical axis direction.

Referring to FIG. 11K , the description of the first yoke YK1e according to another embodiment may be applied in the same manner as the first yoke YK1 according to the above-described embodiment except for the description below. Furthermore, contents described in other embodiments may also be applied.

That is, the first yoke may include a first side plate part EA1 and a second side plate part EA2 extending outward. The first side plate portion EA1 may be positioned on a short side of the bottom portion SA1. Also, the second side plate portion EA2 may be positioned on the long side of the bottom portion SA1. Furthermore, the second side plate part EA2 may be 0.7 times or more in length as an optical axis of the magnet (first magnet) on which it is seated. Accordingly, in this embodiment, the first yoke may be disposed in a groove (eg, an outer surface of a wing) disposed on a side surface of the first lens assembly. That is, the first yoke may be seated in a groove located on a side surface of the first lens assembly facing the first guide unit. Furthermore, the first lens assembly and the first yoke may be coupled to each other through a bonding member (eg, epoxy).

Referring to FIG. 11L , the description of the first yoke YK1f according to another embodiment may be applied in the same manner as the first yoke YK1 according to the above-described embodiment except for the description below. Furthermore, contents described in other embodiments may also be applied.

The first yoke may include a first side plate part EA1 and a second side plate part EA2 extending outward. The first side plate portion EA1 may be positioned on a short side of the bottom portion SA1. Also, the second side plate portion EA2 may be positioned on the long side of the bottom portion SA1. Furthermore, the first side plate portion EA1 and the second side plate portion EA2 may contact each other. That is, the first side plate part EA1 and the second side plate part EA2 may be connected to each other. Accordingly, the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 may be connected to each other. Accordingly, the first side plate portion EA1 and the second side plate portion EA2 may form a closed loop with respect to the plane XY. In other words, the first side plate part EA1 and the second side plate part EA2 may surround the first magnet without an opening area.

Also, in this embodiment, the first yoke may be disposed in a groove (eg, an outer surface of a wing) disposed on a side surface of the first lens assembly. That is, the first yoke may be seated in a groove located on a side surface of the first lens assembly facing the first guide unit. Furthermore, the first lens assembly and the first yoke may be coupled to each other through a bonding member (eg, epoxy).

Description of the plurality of embodiments described above may be equally applied to different embodiments. Also, the description of the first yoke coupled to the first lens assembly may be equally applied to the second yoke coupled to the second lens assembly.

Referring to FIG. 12B , the aforementioned second mark MK2 may be present on the upper surface of the second lens assembly 1222b. In addition, a body portion having a lens hole into which the second lens group 12221b is inserted and wing portions facing the second guide portion may exist on the side of the body portion. The aforementioned second recess may be present on the outer surface of the wing unit. A ball may be seated in the second recess RS2.

Also, a second yoke YK2 may be positioned on the wing of the second lens assembly 1222b. The second yoke YK2 may be coupled to the wings of the second lens assembly 1222b. For example, the second lens assembly 1222b and the second yoke YK2 may be coupled to each other by a bonding member (eg, epoxy). In addition, it may be coupled to the second lens assembly 1222b by the coupling portion of the second yoke YK2.

Furthermore, the second magnet 1252b may be seated on the second yoke YK2. As described above, the first surface BSF1 of the second magnet 1252b may face the outer side or the second coil as described above. Also, the second surface BSF2 of the second magnet 1252b may contact the bottom surface of the second yoke YK2. Alternatively, the second surface BSF2 of the second magnet 1252b may come into contact with a bottom portion described later.

The second magnet 1252b may be seated on the second yoke YK2 and at least partially surrounded by the second yoke YK2 on at least five surfaces. In other words, the outer side of the second magnet 1252b, that is, the entire first surface BSF1 may be exposed to the outside. Unlike this, at least a portion of the second magnet 1252b other than the first surface BSF1 may be covered by the second yoke YK2. Alternatively, surfaces of the second magnet 1252b other than the first surface BSF1 may contact or face each region of the second yoke YK2 .

12C to 12E, the second yoke according to the embodiment extends outwardly from the bottom portion SA1 facing the bottom surface of the second magnet 1252b and the bottom portion SA1, and extends in the optical axis direction (Z-axis direction). ), a first side plate portion EA1 facing each other, and a second side plate portion EA2 extending outward from the bottom portion SA1 and facing each other in a vertical direction (X-axis direction).

The bottom portion SA1 may contact or face the second surface BSF2 of the second magnet 1252b.

Also, the first side plate portion EA1 may be positioned at an edge of the bottom portion SA1 and connected to the bottom portion SA1. The second side plate portion EA2 may be positioned at an edge of the bottom portion SA1 and connected to the bottom portion SA1.

As an example, the second magnet 1252b may be surrounded by the bottom portion SA1 , the first side plate portion EA1 , and the second side plate portion EA2 .

The length of the first side plate part EA1 in the first direction or the vertical direction may be greater than the length of the second side plate part EA2 in the first direction (or vertical direction). Also, the length of the first side plate part EA1 in the third direction or the optical axis direction may be smaller than the length of the second side plate part EA2 in the third direction (or the optical axis direction). Alternatively, the first side plate portion EA1 may be positioned on a short side of the bottom portion SA1. Also, the second side plate portion EA2 may be positioned on the long side of the bottom portion SA1.

The first side plate portion EA1 may include a stepped portion ST inclined toward the second side plate portion EA2 at an edge thereof. For example, the first side plate portion EA1 may have a chamfer. With this configuration, the second magnet 1252b disposed on the second yoke YK2 can be easily prevented from falling off.

Also, the length L1 of the second yoke YK2 in the optical axis direction or the third direction may be greater than the length L2 of the second magnet 1252b in the optical axis direction or the third direction.

Also, the length W1 of the first side plate EA1 in the second direction (Y-axis direction) may be less than or equal to the length W2 of the second magnet 1252b in the second direction (Y-axis direction).

Also, the length W1 of the second side plate EA2 in the second direction (Y-axis direction) or the horizontal direction may be less than or equal to the length W2 of the second magnet 1252b in the horizontal direction or the second direction.

Accordingly, the outer surface or the first surface BSF1 of the second magnet 1252b may be disposed outside the second side plate part EA2. Alternatively, the outer surface or the first surface BSF1 of the second magnet 1252b may be disposed outside the first side plate part EA1. With this configuration, it is possible to block the magnetic force generated by the second magnet 1252b from being applied to the Hall sensor, the second magnet, the second coil, and the like of the second lens assembly by the second yoke YK2. In addition, the reduction of the electromagnetic force (eg, Lorentz force) formed by the magnetic force generated by the second magnet 1252b together with the second coil can be reduced. Accordingly, a decrease in the driving force of the first driving unit may be prevented.

The second yoke YK2 may include a coupling portion EA3 extending inwardly from the bottom portion SA1. The coupling part EA3 may be located on the long side of the edge of the bottom part SA1.

In addition, as described above, in this specification, the inner side may correspond to a direction toward the optical axis, and the outer side may correspond to a direction away from the optical axis, for example, a direction from the center of the lens group to the outer surface of the lens group.

As an example, the second side plate part EA2 may include a first sub-side plate part SEA1 and a second sub-side plate part SEA2 spaced apart from each other along the optical axis direction. That is, the first sub-side plate SEA1 and the second sub-side plate SEA2 may be spaced apart from each other by a predetermined distance in the optical axis direction.

The coupling part EA3 may be disposed between the first sub-side plate part SEA1 and the second sub-side plate part SEA2. Also, the coupling portion EA3 may extend in a direction different from that of the second side plate portion EA2.

Also, the coupler EA3 may be spaced apart from the first sub-side plate SEA1 by a predetermined distance in the optical axis direction. Also, the coupler EA3 may be spaced apart from the second sub-side plate SEA2 by a predetermined distance in the optical axis direction. With this configuration, formation between the second side plate portion EA2 and the coupling portion EA3 extending in different directions can be easily performed.

The coupler EA3 may at least partially overlap the second lens assembly in a vertical direction. That is, the coupler EA3 may be disposed in a groove disposed on an outer surface of the wing of the second lens assembly. Accordingly, coupling force between the second yoke YK2 and the second lens assembly may be improved through the coupling portion EA3.

In addition, the first sub-side plate SEA1 and the second sub-side plate SEA2 may have the same length L3 in the optical axis direction (Z-axis direction).

Also, the length L4 of the coupler EA3 in the optical axis direction may be smaller than the length L3 of the second side plate EA2 in the optical axis direction. Also, the length L4 of the coupler EA3 in the optical axis direction may be smaller than the length L4 of the first sub-side plate SEA1 or the second sub-side plate SEA2 in the optical axis direction. With this configuration, it is possible to minimize the magnetic force generated by the second magnet 1252b from being provided to the opposite side from the second yoke YK2 passing between the first sub-side plate SEA1 and the second sub-side plate SEA2. there is.

In addition, the bottom portion SA1 includes a yoke groove IH1 disposed between at least one of the first sub-side plate portion SEA1 and the coupling portion EA3 and between the second sub-side plate portion SEA2 and the coupling portion EA3. can include The yoke groove IH1 may be located between the second side plate part EA2 and the coupling part EA3 at the edge of the bottom part SA1. Also, the yoke groove IH1 may be convex toward the center of the bottom portion SA1.

The coupling part EA3 may be located between the second balls spaced apart from each other. That is, the coupling part EA3 may be positioned between the second balls spaced apart from each other along the optical axis direction. Furthermore, the coupling unit may be positioned between the second recesses RS2 spaced apart from each other along the optical axis direction.

Furthermore, the second yoke YK2 may include a yoke hole YK2h located in the bottom portion SA1. The number of yoke holes YK2h may be plural. A bonding member (eg, epoxy) may be applied through the yoke hole YK2h. Accordingly, coupling force between at least two of the second magnet 1252b, the second yoke YK2, and the second lens assembly may be improved.

The yoke hole YK2h may be disposed on the first imaginary line VL1 that halves the second yoke YK2 in the vertical direction. For example, the center of the yoke hole YK2h may be located on the first imaginary line VL1.

Furthermore, the coupler EA3 may be disposed on the second imaginary line VL2 bisecting the second yoke YK2 in the optical axis direction (Z-axis direction). Accordingly, even if the magnetic force generated from the second magnet 1252b moves to the opposite side, the maximum distance can be increased.

Referring to FIG. 12F , the first yoke YK1 and the second yoke YK2 may be disposed to face each other with respect to an optical axis or an optical axis direction. Furthermore, the coupling portion EA3 of the first yoke YK1 and the coupling portion EA3 of the second yoke YK2 may face each other. However, the positions of the first yoke YK1 and the second yoke YK2 may change according to the movement of the first lens assembly and the second lens assembly.

Furthermore, through the bottom part, the first side plate part, and the second side plate part EA2, the first yoke Yk1 and the second yoke Yk2 have magnetic forces by the first and second magnets seated on each other. can be suppressed as much as possible. Accordingly, it is possible to prevent deterioration of restoring force of the first and second lens assemblies due to magnetic force.

In addition, it is possible to prevent the third Hall sensor from being influenced by the first and second magnets. For example, the influence of the magnetic force of the first magnet on the second Hall sensor may be reduced or suppressed by the first yoke YK1. In addition, the influence of the magnetic force of the second magnet on the first Hall sensor may be reduced or suppressed by the second yoke YK2.

13 is a diagram illustrating driving of a second camera actuator according to an exemplary embodiment.

Referring to FIG. 13 , in the camera device according to the embodiment, the first optical driving unit moves the first lens assembly 1222a and the second lens assembly 1222b of the lens unit 1220 along a third direction (Z-axis direction). Driving forces F3A, F3B, F4A, and F4B for moving may be provided. As described above, the first optical driving unit may include the first optical driving coil 1251 and the first optical driving magnet 1252 . In addition, the lens unit 1220 may move along the third direction (Z-axis direction) by the electromagnetic force formed between the first optical driving coil 1251 and the first optical driving magnet 1252 .

In this case, the first coil 1251a and the second coil 1251b may be disposed in holes formed in the side portions (eg, the first side portion and the second side portion) of the second housing 1230 . Also, the second coil 1251b may be electrically connected to the first substrate 1271 . The first coil 1251a may be electrically connected to the second substrate 1272 . Accordingly, the first coil 1251a and the second coil 1251b may receive a driving signal (eg, current) from a driving driver on the circuit board of the circuit board 1300 through the second substrate 1270 .

At this time, the first lens assembly 1222a on which the first magnet 1252a is seated moves in the third direction (Z-axis direction) by the electromagnetic force (F3A, F3B) between the first coil 1251a and the first magnet 1252a. can move along In addition, the second lens group 1221b seated on the first lens assembly 1222a may also move along the third direction.

Further, the second lens assembly 1222b on which the second magnet 1252b is seated moves in the third direction (Z-axis direction) by the electromagnetic force (F4A, F4B) between the second coil 1251b and the second magnet 1252b. can move along. In addition, the third lens group 1221c seated on the second lens assembly 1222b may also move along the third direction.

Accordingly, as described above, the focal length or magnification of the optical system may be changed by moving the second lens group 1221b and the third lens group 1221c. As an example, the magnification may be changed by moving the second lens group 1221b. In other words, zooming may be performed. Also, the focus may be adjusted by moving the third lens group 1221c. In other words, auto focusing may be achieved. With this configuration, the second camera actuator may be a fixed zoom or continuous zoom.

Furthermore, the first Hall sensor 1253a and the second Hall sensor 1253b may be disposed in at least one sub-coil of the first coil and the second coil. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the second direction. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may be positioned in sub-coils that overlap or face each other in the second direction. Preferably, as described above, the first Hall sensor 1253a and the second Hall sensor 1253b are disposed so as not to overlap in the second direction, so that magnetic force generated from the magnet is transferred to the Hall sensor on the other side rather than the Hall sensor facing each other. becoming can be prevented. For example, magnetic force generated from the first magnet may be easily blocked from being provided to the second hall sensor by the second magnet, the second lens assembly, or the like. As a result, the Hall sensor can be accurately driven, and interference with the return force of the lens assembly can be reduced.

Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may partially overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the second direction.

14 is a schematic diagram showing a circuit board according to an embodiment.

Referring to FIG. 14 , as described above, the circuit board 1300 according to the embodiment may include a first circuit board part 1310 and a second circuit board part 1320. The first circuit board unit 1310 is located below the base and can be coupled to the base. Also, an image sensor IS may be disposed on the first circuit board unit 1310 . Also, the first circuit board unit 1310 and the image sensor IS may be electrically connected.

In addition, the second circuit board unit 1320 may be located on the side of the base. In particular, the second circuit board unit 1320 may be located on the first side of the base. Accordingly, the second circuit board unit 1320 is located adjacent to the first coil located adjacent to the first side, so that electrical connection can be easily made.

Furthermore, the circuit board 1300 may further include a fixed board (not shown) located on a side surface. Thus, even if the circuit board 1300 is made of a flexible material, it can be combined with the base while maintaining rigidity by the fixed board.

The second circuit board unit 1320 of the circuit board 1300 may be located on a side of the first optical driving unit 1250 . The circuit board 1300 may be electrically connected to the second optical driving unit and the first optical driving unit. For example, electrical connection may be made by SMT. However, it is not limited to this method.

The circuit board 1300 may include a circuit board having wiring patterns that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), and a rigid flexible printed circuit board (Rigid Flexible PCB). can However, it is not limited to these types.

Also, the circuit board 1300 may be electrically connected to another camera module in the terminal or a processor of the terminal. Through this, the above-described camera actuator and a camera device including the camera actuator may transmit and receive various signals within the terminal.

15 is a perspective view of some components of a second camera actuator according to an embodiment.

Referring to FIG. 15 , the first lens assembly 1222a and the second lens assembly 1222b may be spaced apart from each other in an optical axis direction (Z-axis direction). Also, the first lens assembly 1222a and the second lens assembly 1222b may move along the optical axis direction (Z-axis direction) by the first optical driver. For example, an auto focus or zoom function may be performed by moving the first lens assembly 1222a and the second lens assembly 1222b.

Also, the first lens assembly 1222a may include a first lens holder LAH1 holding and combining the second lens group 1221b. The first lens holder LAH1 may be combined with the second lens group 1221b. Also, the first lens holder LAH1 may include a first lens hole LH1 for accommodating the second lens group 1221b. That is, the second lens group 1221b including at least one lens may be disposed in the first lens hole LH1. The first guide part G1 may be spaced apart from one side of the first lens holder LAH1. For example, the first guide part G1 and the first lens holder LAH1 may be sequentially disposed in the second direction (Y-axis direction).

The second lens assembly 1222b may include a second lens holder LAH2 holding and combining the third lens group 1221c. Also, the second lens holder LAH2 may include a second lens hole LH2 for accommodating the third lens group 1221c. That is, at least one lens may be disposed in the second lens hole LH2.

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

In an embodiment, the first guide part G1 and the second guide part G2 may at least partially overlap in the second direction (Y-axis direction). With this configuration, space efficiency of the first optical drive unit for moving the first and second lens assemblies within the second camera actuator is improved, so that the second camera actuator can be easily miniaturized.

Also, the second guide part G2 and the second lens holder LAH2 may be sequentially arranged in directions opposite to the second direction (Y-axis direction).

As described above, the first ball and the first coil may be disposed in the first guide part G1, and the second ball and the second coil may be disposed in the second guide part G2 as described above. there is.

Also, according to the embodiment, each of the first and second lens assemblies 1222a and 1222b may include yokes YK1 and YK2 disposed on the side surfaces.

The first yoke YK1 may be positioned on a side surface of the first lens assembly 1222a. The second yoke YK2 may be positioned on a side surface of the second lens assembly 1222b. At least a portion of the first yoke YK1 and the second yoke YK2 may extend outward. Accordingly, the first yoke YK1 may cover at least a portion of the side surface of the first magnet 1252a. As shown, the first yoke YK1 may have various structures surrounding the inner surface and part of the side surface of the first magnet 1252a. For example, the first yoke YK1 is formed of divided members, and each divided member may be positioned on an inner surface and a side surface of the first magnet 1252a. Accordingly, coupling force between the unipolarly magnetized first optical driving magnet and the yoke may be improved. Similarly, the second yoke YK2 may cover at least a portion of the side surface of the second magnet 1252b. As shown, the second yoke YK2 may have various structures surrounding the inner surface and part of the side surface of the second magnet 1252b. For example, the second yoke YK2 is formed of divided members, and each divided member may be positioned on an inner surface and a side surface of the second magnet 1252b.

Further, the yokes may be positioned to be coupled to each other for the first optical drive coil as well as the first optical drive magnet.

And a plurality of balls may be located on the outer surface of the lens assembly. As described above, the first ball B1 may be located on an outer surface of the first lens assembly 1222a. The second ball B2 may be located on an outer surface of the second lens assembly 1222b.

The first ball B1 and the second ball B2 may be formed in plurality. For example, a plurality of first balls B1 may be arranged side by side in one recess of the first lens assembly 1222a along the optical axis direction (Z-axis direction). In addition, a plurality of second balls B2 may be disposed side by side in one recess of the second lens assembly 1222b along the optical axis direction (Z-axis direction).

For example, the second ball B2 may include a first sub-ball B2a, a second sub-ball B2b, and a third sub-ball B2c. The first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may be arranged side by side along the optical axis direction. Accordingly, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may at least partially overlap each other in the optical axis direction.

Also, the first sub-ball (B2a) and the second sub-ball (B2b) may be located at the edge of the plurality of balls. The third sub-ball B2c may be located between the first sub-ball B2a and the second sub-ball B2b.

A plurality of balls may have the same or different diameters from each other. For example, at least a portion of the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have the same diameters R1, R3, and R2. In addition, the first sub-ball B2a, the second sub-ball B2b, and the third sub-ball B2c may have different diameters R1, R3, and R2.

In an embodiment, the diameters R1 and R3 of the balls (first and second sub-balls) positioned at the edge may be smaller than the diameter (R2) of the ball (third sub-ball) positioned on the inner side of the plurality of balls. For example, the diameters R1 and R3 of the first sub-ball B2a and the second sub-ball B2b may be smaller than the diameter R2 of the third sub-ball B2c. With this configuration, the movement of the lens assembly by the plurality of balls can be accurately performed without tilting to one side.

Also, as described above, a plurality of first optical drive magnets may be formed of a first magnet and a second magnet. In addition, the first magnet and the second magnet face each other, and the same pole may be disposed outside. That is, the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet may have a first pole. Also, the second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet may have a second pole.

16 is a view illustrating a first optical drive coil, a first optical drive magnet, and a yoke according to an embodiment, and FIG. 17 is a view explaining movement of the first optical drive magnet by a first optical drive unit according to an embodiment. 18a is a view illustrating movement of second and third lens assemblies according to an embodiment, FIG. 18b is an exploded perspective view of a second housing and a housing yoke according to an embodiment, and FIG. 18c is a second view according to an embodiment. It is a drawing of a housing and a housing yoke, and FIG. 18d is a drawing of a second housing and a housing yoke according to a modified example.

16 to 18A, a length W5 in the optical axis direction (Z-axis direction) of the first sub-coil SC1a is a length W6 in the optical axis direction (Z-axis direction) of the second sub-coil SC2a. ) can be equal to With this configuration, driving force control by the first sub coil SC1a and the second sub coil SC2a can be easily performed.

In addition, the total length W1 (or maximum length) in the optical axis direction (Z-axis direction) of the first optical drive coil is equal to the length W2 (maximum W2) in the optical axis direction (Z-axis direction) of the first optical drive magnet 1252a. length) may be greater. With this configuration, the stroke by the first optical drive magnet can be performed to the maximum. Furthermore, long strokes can be performed by the first optical drive magnet of monopolar magnetization.

Also, as an embodiment, the maximum movement distance MD of the first lens assembly in the optical axis direction is greater than the length W10 in the short axis direction (first direction) of the hole (or hollow part) of the first sub-coil SC1a. , may be equal to or smaller than the length W3 in the long axis direction (optical axis direction or third direction) of the hole (or hollow part) of the first sub-coil SC1a.

In addition, the maximum movement distance (MD) of the first lens assembly is greater than the length in the short axis direction (first direction) of the hole (or hollow part) of the second sub coil SC2a, and the hole of the second sub coil SC2a (Alternatively, it may be equal to or smaller than the length W4 in the long axis direction (optical axis direction or third direction) of the hollow part.

In addition, as an embodiment, the maximum movement distance MD3 of the second lens assembly in the optical axis direction is greater than the length of the hole (or hollow part) of the third sub-coil SC1b in the short axis direction (first direction), and It may be equal to or smaller than the length of the hole (or hollow part) of the sub-coil SC1b in the long axis direction (optical axis direction or third direction).

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

Furthermore, the length W3 of the inner hole of the first sub-coil SC1a in the optical axis direction may be the same as the length W4 of the inner hole of the second sub-coil SC2a in the optical axis direction.

In addition, the length W2 in the optical axis direction (Z-axis direction) of the driving magnet 1252a may be greater than the length W3 in the optical axis direction of the inner hole of the first sub-coil SC1a. Further, the length W2 in the optical axis direction (Z-axis direction) of the driving magnet 1252a may be greater than the length W4 in the optical axis direction of the inner hole of the second sub-coil SC2a. As a result, the first optical drive magnet can move along the optical axis within the entire length in the direction of the optical axis of the first optical drive coil.

The maximum length (or width, W11) of the first drive magnet in the minor axis direction (or first direction) may be smaller than the maximum length (or width, W12) in the minor axis direction (or first direction) of the first drive coil. In this case, the maximum length in the short axis direction (or first direction) of the first drive coil may correspond to the distance between the outermost peripheries of the first drive coil spaced apart in the first direction.

Also, in an embodiment, the hollow part (or hole) of one coil of the first optical drive coil may have a length in the optical axis direction greater than a length in the short axis direction or the first direction. For example, the length W3 in the long axis direction (optical axis direction or third direction) of the hole (or hollow portion) of the first sub coil SC1a is the short axis direction (second direction) of the hole (or hollow portion) of the first sub coil SC1a. 1 direction) may be greater than the length W10 In addition, the horizontal length (or width) of the hollow part of the sub coil may be greater than the vertical length (or length).

In addition, the length W2 in the optical axis direction (Z-axis direction) of the first optical driving magnet (or the first and second driving magnets) is the hollow part (or hole) of each sub-coil (first sub-coil to fourth sub-coil). ) may be greater than the lengths W3 and W4 in any one optical axis direction.

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

The length W2 in the optical axis direction (Z-axis direction) of the first optical driving magnet (or the first and second driving magnets) is from one side of the inner hole of the first sub coil SC1a to the inner hole of the second sub coil SC2a. It may be smaller than the length or range W8 to one side.

Furthermore, the length W2 in the optical axis direction (Z-axis direction) of the first optical driving magnet (or the first and second driving magnets) is the length W2 of the second sub coil SC2a at one side of the inner hole of the first sub coil SC1a. It may be smaller than the length or range W9 to one side of the inner hole.

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

With this configuration, no back electromotive force is generated in the movement of the lens assembly along the optical axis direction, and a long stroke can be realized.

The length (maximum length, W2) in the optical axis direction (Z-axis direction) of the first optical drive magnet (or the first and second drive magnets) is 0.6 times or less than the maximum length W1 of the corresponding first drive coil in the optical axis direction. can Preferably, the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the first optical drive magnet (or the first and second drive magnets) is equal to the maximum length W1 in the optical axis direction of the corresponding first drive coil. It may be 0.55 times or less. More preferably, the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the first optical drive magnet (or the first and second drive magnets) is equal to the maximum length W1 in the optical axis direction of the corresponding first drive coil. It may be less than 0.5 times of Thus, the camera device can provide a long stroke with a minimized counter electromotive force.

The maximum movement distance (MD) of the first lens assembly in the optical axis direction may be smaller than the length (maximum length, W2) of the first optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction). For example, the maximum movement distance (MD) of the first lens assembly in the optical axis direction is 0.66 times the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the first optical driving magnet (or the first and second driving magnets). It may be greater than or equal to 0.92 times. Preferably, the maximum movement distance (MD) of the first lens assembly in the optical axis direction is 0.7 of the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the first optical driving magnet (or the first and second driving magnets). It may be greater than or equal to 0.90 times. More preferably, the maximum moving distance (MD) of the first lens assembly in the optical axis direction is the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the first optical driving magnet (or the first and second driving magnets). It may be 0.74 times or more and 0.88 times or less. Accordingly, generation of counter electromotive force can be suppressed as much as possible.

Also, as an embodiment, the total length W1 (or maximum length) of the first optical drive coil in the optical axis direction (Z-axis direction) may be 18 mm to 20 mm. Furthermore, the length W2 in the optical axis direction (Z-axis direction) of the first optical driving magnet may be 8 mm to 12 mm. The length W3 of the hole (or the hollow part in the long axis direction (optical axis direction or third direction)) of the first sub coil SC1a may be 5.6 mm to 8.7 mm. And the hole of the second sub coil SC2a ( Alternatively, the length W4 in the long axis direction (optical axis direction or third direction) of the hollow part may be 5.6 mm to 8.7 mm.

The length W5 in the optical axis direction (Z-axis direction) of the first sub-coil SC1a may be 8 mm to 10 mm. However, as described above, the length W5 in the optical axis direction (Z-axis direction) of the first sub-coil SC1a may be greater than or equal to the length W2 in the optical axis direction (Z-axis direction) of the first optical drive magnet. there is.

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

A length W7 from one side of the inner hole of the first sub coil SC1a to the other side of the inner hole of the second sub coil SC2a may range from 13.6 mm to 20.7 mm.

A length or range W8 from one side of the inner hole of the first sub coil SC1a to one side of the inner hole of the second sub coil SC2a may be 8 mm to 12 mm. In addition, the length or range W8 from one side of the inner hole of the first sub-coil SC1a to one side of the inner hole of the second sub-coil SC2a is the length in the optical axis direction (Z-axis direction) of the first optical driving magnet ( W2) or more.

A length or range W9 from one side of the inner hole of the first sub coil SC1a to one side of the inner hole of the second sub coil SC2a may be 8 mm to 12 mm. The length or range W9 from one side of the inner hole of the first sub-coil SC1a to one side of the inner hole of the second sub-coil SC2a is equal to the length W2 in the optical axis direction (Z-axis direction) of the first optical drive magnet. may be ideal

Also, according to the unipolar magnetization of the first optical driving magnet, current may flow in different directions between the first sub-coil SC1a and the second sub-coil SC2a. For example, current may flow in one of clockwise and counterclockwise directions in the first sub coil SC1a, and current may flow in the other of clockwise and counterclockwise directions in the second sub coil SC2a.

Furthermore, the length W2 of the first optical driving magnet in the optical axis direction (Z-axis direction) may be greater than the moving distances MD2 and MD3 of the lens assembly in the optical axis direction. That is, the length W2 of the first optical drive magnet in the optical axis direction (Z-axis direction) may be greater than the maximum movement distance of the first lens assembly or the maximum movement distance of the second lens assembly. A driving force for movement to can be safely provided.

The first optical driving magnet (eg, the first magnet 1252a) extends from one side of the inner hole of the first sub-coil SC1a to the other side of the inner hole of the second sub-coil SC2a in the optical axis direction (Z-axis direction). It may be movable in (W7). That is, the first optical drive magnet may move in the optical axis direction of the hole in the first optical drive coil within a maximum range (MD) in the optical axis direction.

Also, as described above, there may be a plurality of lens assemblies, and a lens assembly disposed at a rear end of the plurality may have a greater moving distance in an optical axis direction than a lens assembly disposed at a front end.

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

In addition, in the camera actuator according to the embodiment, the first optical driving magnet 1252a may move from 'center' to 'maximum movement 1' or 'maximum movement 2'. Here, in the case of 'center', the first optical drive magnet 1252a may overlap the first sub coil SC1a and the second sub coil SC2a in the second direction. In other words, both the first sub-coil SC1a and the second sub-coil SC2a may face the first optical driving magnet.

Further, since the coil extends in the first direction providing driving force by the actual electromagnetic force, the area where the first sub coil SC1a and the first optical drive magnet 1252a overlap is the area where the second sub coil SC2a and the first optical drive magnet 1252a overlap. Areas where the optical drive magnets 1252a overlap may be identical to each other. As a result, a long stroke can be realized by minimizing generation of back electromotive force.

Further, 'maximum movement 1' may correspond to a case where the first optical driving magnet 1252a moves the maximum in a direction opposite to the third direction (Z-axis direction). In this case, the first optical driving magnet 1252a may have a larger overlapping area with the first sub-coil SC1a than the second sub-coil SC2a. Furthermore, the first optical drive magnet 1252a may at least partially overlap the inner hole of the first sub-coil SC1a. More specifically, the first optical drive magnet 1252a may be spaced apart from the edge of the inner hole of the first sub-coil SC1a by a predetermined distance GP2 in the optical axis direction. With this configuration, counter electromotive force generated at the end of the first sub coil SC1a can be reduced. For example, the first optical driving magnet 1252a may be moved with the maximum stroke to an area that does not overlap an end portion of the first sub-coil SC1a in a direction opposite to the optical axis direction in the second direction (Y-axis direction).

Further, 'maximum movement 2' may correspond to a case in which the first optical driving magnet 1252a is moved to the maximum in the third direction (Z-axis direction). In this case, the first optical driving magnet 1252a may have a larger overlapping area with the second sub-coil SC2a than the first sub-coil SC1a. Furthermore, the first optical driving magnet 1252a may at least partially overlap the inner hole of the second sub-coil SC2a. More specifically, the first optical driving magnet 1252a may be spaced apart from the edge of the inner hole of the second sub-coil SC2a by a predetermined distance GP1 in the optical axis direction. With this configuration, counter electromotive force generated at the end of the second sub coil SC2a can be reduced. For example, the first optical driving magnet 1252a may be moved with the maximum stroke to an area that does not overlap with an end of the second sub-coil SC2a in the optical axis direction in the second direction (Y-axis direction).

Accordingly, even if the length of the first optical drive magnet 1252a is small in the direction of the optical axis, the long stroke of the camera actuator can be efficiently implemented through unipolar magnetization and the current direction of the plurality of first optical drive coils.

Also, the maximum movement distance of the first optical driving magnet 1252a may correspond to the length of the first and second recesses accommodating the first ball or the second ball in the aforementioned first lens assembly in the optical axis direction. Also, the maximum movement distance of the first optical driving magnet 1252a may correspond to a movement distance of the first optical driving magnet 1252a from maximum movement 1 to maximum movement 2 in the optical axis direction (Z-axis direction). Alternatively, the maximum movement distance of the first optical drive magnet 1252a may correspond to a distance between stoppers that restrict movement of the first ball or the second ball in the optical axis direction. Alternatively, the maximum moving distance of the first optical drive magnet 1252a is the maximum distance that the bobbin can move, and may correspond to the separation distance between the stopper located in the optical axis direction with respect to the bobbin and the stopper located in the opposite direction to the optical axis direction in the optical axis direction.

Also, the maximum movement distance of the first optical driving magnet 1252a may correspond to twice the distance moved from the center to the maximum movement 1 . Further, the moving distance of the first optical driving magnet 1252a according to the embodiment may be -4 mm to +4 mm based on the center. In detail, the moving distance of the first optical driving magnet 1252a may be -3.8 mm to +3.8 mm based on the center. More specifically, the moving distance of the first optical driving magnet 1252a may be -3.5 mm to +3.5 mm based on the center. Here, a movement distance from the center to the optical axis direction is referred to as '+', and a direction opposite to the optical axis direction is referred to as '-'. Accordingly, the first optical driving magnet 1252a (or at least one of the first lens assembly and the second lens assembly) according to the embodiment may move in the range of 0 mm to 12 mm along the optical axis direction. In addition, the aforementioned maximum movement distance may correspond to the maximum stroke of the lens assembly in the camera module.

Referring to FIGS. 18B and 18C , the second housing 1230 (particularly, the 2-2 housing 1232) may include a housing opening 1232h disposed on an upper surface thereof. At least a portion of the first lens assembly and the second lens assembly may be exposed to the outside by the housing opening 1232h. In particular, the first mark of the first lens assembly and the second mark of the second lens assembly may be exposed through the housing opening 1232h. Thus, as described above, it is possible to easily inspect whether the movement of the first lens assembly or the second lens assembly is accurately performed through vision recognition.

The first housing yoke HY1 and the second housing yoke HY2 may be disposed on at least one of an upper surface and a lower surface of the second housing 1230 (in particular, the 2-2 housing 1232).

The first housing yoke HY1 and the second housing yoke HY2 may be disposed outside the housing opening 1232h.

Furthermore, the first housing yoke HY1 may include a 1-1st housing yoke HY1a disposed on the upper side and a 1-2nd housing yoke HY1b disposed on the lower side. Also, the second housing yoke HY2 may include a 2-1st housing yoke HY2a disposed on the upper side and a 2-2nd housing yoke HY2b disposed on the lower side.

In an embodiment, the first housing yoke HY1 may at least partially overlap the first coil 1251a and the first magnet 1252a in a vertical direction (X-axis direction).

At this time, the first housing yoke HY1 may have a portion that does not overlap with the first magnet 1252a according to the movement of the first magnet 1252a.

In addition, the first housing yoke HY1 overlaps the first coil 1251a in a vertical direction, and may or may not partially overlap the first magnet 1252a in a vertical direction (X-axis direction).

With this configuration, the first housing yoke HY1 can prevent the magnetic force generated by the second magnet from being provided to the first Hall sensor in the first coil 1251a. Thus, driving by the first Hall sensor can be accurately performed.

Specifically, the first housing yoke HY1 may overlap the inner region of the first coil 1251a in a vertical direction. That is, the first housing yoke HY1 may not overlap the outer region of the first coil 1251a in the vertical direction. Also, the outermost surface of the first coil 1251a may not overlap the first housing yoke HY1 in a vertical direction. Alternatively, the outermost side of the first coil 1251a may overlap the first housing yoke HY1 in a vertical direction. Thus, the first housing yoke HY1 can easily block the magnetic force provided to the opposite side. This can be equally applied to the second housing yoke.

In addition, the first housing yoke HY1 may overlap the first magnet 1252a in a vertical direction. For example, the first magnet 1252a moves along the optical axis direction, but the first housing yoke HY1 may have a predetermined length in the optical axis direction corresponding to the movement distance of the first magnet 1252a. For example, the length of the first housing yoke HY1 in the optical axis direction may be greater than the length of the first magnet 1252a in the optical axis direction. With this configuration, the influence of the magnetic force generated in the first magnet 1252a on the second hall sensor or the second coil for the opposite side by the first housing yoke HY1 is suppressed even when the first magnet 1252a moves. It can be.

In an embodiment, the second housing yoke HY2 may at least partially overlap the second coil 1251b and the second magnet 1252b in a vertical direction (X-axis direction).

At this time, the second housing yoke HY2 may have a portion that does not overlap with the second magnet 1252b according to the movement of the second magnet 1252b. Furthermore,

In addition, the second housing yoke HY2 overlaps the second coil 1251b in a vertical direction, and may or may not partially overlap the second magnet 1252b in a vertical direction (X-axis direction).

With this configuration, the second housing yoke HY2 can prevent the magnetic force generated by the first magnet from being provided to the second Hall sensor in the second coil 1251b. Thus, driving by the second Hall sensor can be accurately performed.

Specifically, the second housing yoke HY2 may overlap the inner region of the second coil 1251b in a vertical direction. That is, the second housing yoke HY2 may not overlap the outer region of the second coil 1251b in the vertical direction. Also, the outermost surface of the second coil 1251b may not overlap with the second housing yoke HY2 in the vertical direction. Accordingly, the second housing yoke HY2 can easily block the magnetic force provided to the opposite side.

In addition, the second housing yoke HY2 may overlap the second magnet 1252b in a vertical direction. For example, the second magnet 1252b moves along the optical axis direction, but the second housing yoke HY2 may have a predetermined length in the optical axis direction corresponding to the movement distance of the second magnet 1252b. For example, the length of the second housing yoke HY2 in the optical axis direction may be greater than the length of the second magnet 1252b in the optical axis direction. With this configuration, the influence of the magnetic force generated by the second magnet 1252b on the second hall sensor or the second coil for the opposite side by the second housing yoke HY2 is suppressed even when the second magnet 1252b moves. It can be.

Further, the housing yoke groove HYh may be positioned on the long side portion LS or the short side portion SS of the housing yoke HY to facilitate coupling with the second housing. For example, the housing yoke groove HYh may be located on at least one of the long side portion LS and the short side portion SS. However, in terms of ease of manufacture, the housing yoke groove HYh may be located on the long side portion LS. In addition, the number of housing yoke grooves HYh may be plural and may be spaced apart from each other.

Referring to FIG. 18D , the housing yoke HY according to another embodiment may further include a third housing yoke HY3 connecting the first housing yoke HY1 and the second housing yoke HY2. Also, the third housing yoke HY3 may include a 3-1st housing yoke HY3a disposed on the upper side and a 3-2nd housing yoke HY3b disposed on the lower side.

For example, the 3-1st housing yoke HY3a may be disposed between the 1-1st housing yoke HY1a and the 2-1st housing yoke HY2a. The 3-1st housing yoke HY3a may come into contact with the 1-1st housing yoke HY1a and the 2-1st housing yoke HY2a or be spaced apart from each other by a predetermined distance.

Also, the third housing yoke may be disposed outside the housing opening. For example, the first housing yoke, the third housing yoke, and the second housing yoke may be disposed along the edge of the upper surface of the second housing.

As described above, the third housing yoke according to the embodiment can suppress the movement of the magnetic force generated by the first magnet and the second magnet to the opposite side.

19 is a perspective view of a mobile terminal to which a camera device according to an embodiment is applied.

Referring to FIG. 19 , a mobile terminal 1500 according to an embodiment may include a camera device 1000, a flash module 1530, and an autofocus device 1510 provided on the rear side.

The camera device 1000 may include an image capturing function and an auto focus function. For example, the camera device 1000 may include an auto focus function using an image.

The camera device 1000 processes an image frame of a still image or a moving image obtained by an image sensor in a photographing mode or a video call mode.

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

For example, the camera device 1000 may include a first camera device 1000A and a second camera device 1000B, and the first camera device 1000A may implement OIS along with an AF or zoom function. can Also, AF, zoom, and OIS functions may be performed by the second camera device 1000b. In this case, since the first camera device 1000A includes both the first camera actuator and the second camera actuator, the camera device can be easily miniaturized by changing an optical path.

The flash module 1530 may include a light emitting element emitting light therein. The flash module 1530 may be operated by camera operation of the mobile terminal or user's control.

The autofocus device 1510 may include one of the packages of a surface light emitting laser device as a light emitting unit.

The autofocus device 1510 may include an autofocus function using a laser. The auto-focus device 1510 may be mainly used in a condition in which an auto-focus function using an image of the camera device 1000 is degraded, for example, a proximity of 10 m or less or a dark environment.

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

20 is a perspective view of a vehicle to which a camera device according to an embodiment is applied.

For example, FIG. 20 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera device 1000 according to the embodiment is applied.

Referring to FIG. 20 , a vehicle 700 according to the embodiment may include wheels 13FL and 13FR rotating by a power source and a predetermined sensor. The sensor may be the camera sensor 2000, but is not limited thereto.

The camera 2000 may be a camera sensor to which the camera device 1000 according to the embodiment is applied. The vehicle 700 of the embodiment may obtain image information through the camera sensor 2000 that captures a front image or a surrounding image, determines a lane unidentified situation using the image information, and generates a virtual lane when the lane is not identified. can do.

For example, the camera sensor 2000 may obtain a front image by capturing the front of the vehicle 700, and a processor (not shown) may obtain image information by analyzing an object included in the front image.

For example, when objects such as lanes, adjacent vehicles, driving obstacles, and indirect road markings such as median strips, curbs, and roadside trees are captured in an image captured by the camera sensor 2000, the processor detects these objects. and can be included in the image information. At this time, the processor may acquire distance information with the object detected through the camera sensor 2000 to further supplement the image information.

The image information may be information about an object photographed in an image. The camera sensor 2000 may include an image sensor and an image processing module.

The camera sensor 2000 may process a still image or moving image obtained by an image sensor (eg, CMOS or CCD).

The image processing module may process a still image or moving image acquired through an image sensor, extract necessary information, and transmit the extracted information to a processor.

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

Although the above has been described with reference to the embodiments, this is only an example and does not limit the present invention, and those skilled in the art to which the present invention belongs will not deviate from the essential characteristics of the present embodiment. It will be appreciated that various variations and applications are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention as defined in the appended claims.

Claims (25)

housing;
a first bobbin moving in an optical axis direction based on the housing; and
A first driving unit for moving the first bobbin; includes,
The first driving unit may include a first coil; And a first magnet facing the first coil; includes,
A first yoke coupled to the first bobbin and having the first magnet disposed thereon;
The first yoke has a bottom portion; And a side plate portion disposed on a side surface of the bottom portion,
The camera device of claim 1 , wherein the first magnet is surrounded by a bottom portion and the side plate portion.
According to claim 1,
The side plate portion facing the first side plate portion in the optical axis direction; And a second side plate facing in the vertical direction; includes,
The first yoke may include a coupling portion extending from the bottom toward the first bobbin.
According to claim 2,
The second side plate includes a first sub-side plate and a second sub-side plate spaced apart from each other along the optical axis direction.
According to claim 3,
The coupling part is disposed between the first sub-side plate part and the second sub-side plate part.
According to claim 2,
The coupling part overlaps at least a part of the first bobbin in a vertical direction.
According to claim 3,
The first sub-side plate part and the second sub-side plate part have equal lengths in the optical axis direction.
According to claim 3,
A camera device in which a length of the coupler in the optical axis direction is smaller than a length of the first sub-side plate part or the second sub-side plate part in the optical axis direction.
According to claim 3,
The camera device of claim 1 , wherein the bottom part includes a yoke groove disposed between at least one of the first sub-side plate part and the coupling part and between the second sub-side plate part and the coupling part.
According to claim 1,
The first yoke includes a yoke hole disposed on the bottom portion,
The yoke hole is disposed on a first imaginary line that bisects the first yoke in a vertical direction.
According to claim 4,
The coupling part is disposed on an imaginary line bisecting the first yoke in an optical axis direction.
According to claim 3,
The first sub-side plate and the second sub-side plate have different lengths in the optical axis direction.
According to claim 4,
The coupling part is not disposed on the second imaginary line,
The second virtual line is a line that bisects the first yoke in the optical axis direction.
According to claim 4,
The camera device of claim 1 , wherein the couplers are plural and do not overlap each other in a vertical direction.
According to claim 2,
The camera device of claim 1 , wherein a length of the second side plate in a horizontal direction is less than or equal to a length of the first magnet in a horizontal direction.
According to claim 2,
An outer surface of the first magnet is disposed outside the second side plate.
According to claim 1,
The first coil may include first sub-coils disposed to overlap each other in the optical axis direction; and a second sub coil;
The camera device of claim 1 , wherein a maximum length of the first sub-coil in the optical axis direction is greater than a length of the first magnet in the optical axis direction.
According to claim 2,
A camera device in which a length of the first magnet in the optical axis direction is greater than a maximum moving distance of the first bobbin.
According to claim 1,
a second bobbin moving in the direction of the optical axis;
A second driving unit for moving the second bobbin; includes,
The second driving unit may include a second coil; And a second magnet facing the second coil; includes,
The second coil may include a third sub-coil disposed to overlap each other in the optical axis direction; and a fourth sub-coil.
According to claim 18,
Including an image sensor;
The second bobbin is disposed closer to the image sensor than the first bobbin,
A camera device in which a moving distance of the second bobbin in the optical axis direction is greater than a moving distance of the first bobbin in the optical axis direction.
housing;
a first bobbin and a second bobbin moving in an optical axis direction based on the housing;
a first driving unit including a first magnet for moving the first bobbin; and
A second drive unit including a second magnet for moving the second bobbin; includes,
The first magnet and the second magnet are located on opposite sides of each other,
A camera device including a yoke on which one of the first magnet and the second magnet is disposed.
According to claim 20,
The yoke has a bottom portion; And a side plate portion disposed on a side surface of the bottom portion,
A camera device in which one of the first magnet and the second magnet is surrounded by a bottom portion and the side plate portion.
According to claim 20,
The housing includes a housing opening disposed on an upper surface,
The first bobbin and the second bobbin are at least partially exposed by the housing opening.
According to claim 20,
A housing yoke disposed outside the housing opening on at least one of the upper and lower surfaces of the housing; includes,
The camera device of claim 1 , wherein the housing yoke includes at least one of a first housing yoke positioned above the first magnet and a second housing yoke positioned above the second magnet.
According to claim 23,
The first drive unit includes a first coil facing the first magnet,
The second drive unit includes a second coil facing the second magnet,
The camera device of claim 1 , wherein the first housing yoke overlaps at least a portion of the first coil and the first magnet in a vertical direction.
According to claim 24,
The camera device of claim 1 , wherein the first housing yoke does not partially overlap the first magnet in a vertical direction according to the movement of the first magnet.

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