KR20240016902A - Camera actuator and camera module comprising the same - Google Patents

Abstract

Embodiments include a housing including a first side; a first lens assembly moving in the optical axis direction within the housing; and a first driving unit that moves the first lens assembly, wherein the first driving unit includes a first magnet disposed in the first lens assembly and a first coil facing the first magnet, 1 coil is disposed on the first side of the housing and includes a first sub-coil and a second sub-coil sequentially arranged in the optical axis direction, and the housing is between the first sub-coil and the second sub-coil Disclosed is a camera actuator including a first reinforcing member disposed.

Description

Camera actuator and camera module including the same {CAMERA ACTUATOR AND CAMERA MODULE COMPRISING THE SAME}

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

A camera is a device that takes pictures or videos of a subject, and is mounted on portable devices, drones, vehicles, etc. To improve image quality, the camera module has an Image Stabilization (IS) function that corrects or prevents image shaking caused by the user's movement, and automatically adjusts the gap between the image sensor and lens to align the focal length of the lens. It can have an auto focusing (AF) function and a zooming function that increases or decreases the magnification of a distant subject through a zoom lens.

However, there is a problem that the reliability of the housing is reduced in response to the long moving distance of the lens assembly within the camera module.

The technical problem to be solved by embodiments of the present invention is to provide a camera actuator and camera module with improved rigidity through reinforcing members.

Additionally, embodiments of the present invention can provide a camera actuator and a camera module that provide an improved moving distance through a reinforcing member.

Additionally, embodiments of the present invention can provide a camera actuator and a camera module that provide different driving distances and improved driving efficiency through different lengths between sub-coils.

Additionally, an embodiment of the present invention can provide a camera actuator and a camera module that improve the balance of cracks and impacts of lenses in a lens assembly moving in the optical axis direction by adjusting the positions of a plurality of stoppers.

An embodiment of the present invention provides a camera actuator applicable to ultra-slim, ultra-small and high-resolution cameras.

The problem to be solved in the embodiment is not limited to this, and also includes purposes and effects that can be understood from the means of solving the problem or the embodiment described below.

A camera actuator according to an embodiment of the present invention includes a housing including a first side; a first lens assembly moving in the optical axis direction within the housing; and a first driving unit that moves the first lens assembly, wherein the first driving unit includes a first magnet disposed in the first lens assembly and a first coil facing the first magnet, 1 coil is disposed on the first side of the housing and includes a first sub-coil and a second sub-coil sequentially arranged in the optical axis direction, and the housing is between the first sub-coil and the second sub-coil It includes; a first reinforcing member disposed.

The first reinforcing member may at least partially overlap the first coil in the optical axis direction.

The first reinforcing member may include a first member groove disposed at an end.

a second lens assembly moving in the optical axis direction within the housing; It includes a second driving unit that moves the second lens assembly, the housing includes a second side facing the first side, and the second driving unit includes a second magnet disposed in the second lens assembly and the It may include a second coil facing the second magnet.

The length of the first magnet in the optical axis direction may be greater than the length of the hole of the first subcoil in the optical axis direction.

The length of the first coil in the optical axis direction may be the sum of the lengths of the first subcoil and the second subcoil in the optical axis direction and the length of the first reinforcing member in the optical axis direction.

The first groove may include a first sub-groove in which the first sub-coil is placed and a second sub-groove in which the second sub-coil is placed.

The length of the first magnet in the optical axis direction may be greater than the length of the first subgroove or the second subgroove in the optical axis direction.

The second coil may be disposed on the second side of the housing and may include a third sub-coil and a fourth sub-coil sequentially arranged in the optical axis direction.

The length of the second coil in the direction of the optical axis may be greater than the length of the first coil in the direction of the optical axis.

The first coil and the second coil may be arranged to be offset in a direction perpendicular to the optical axis direction.

The length of the first subcoil or the second subcoil in the optical axis direction may be smaller than the length of the third subcoil or the fourth subcoil in the optical axis direction.

The housing may include a second groove in which the second coil is disposed, and a second reinforcing member disposed between the third sub-coil and the fourth sub-coil.

The first reinforcing member and the second reinforcing member may be arranged to be offset in a direction perpendicular to the optical axis direction.

The length of the second groove in the optical axis direction may be greater than the length of the first groove in the optical axis direction.

The second groove may include a third sub-groove where the third sub-coil is placed and a fourth sub-groove where the fourth sub-coil is placed.

The length of the third subgroove or the fourth subgroove in the optical axis direction may be greater than the length of the first subgroove or the second subgroove in the optical axis direction.

The first reinforcing member may be located in the center of the first groove, and the second reinforcing member may be located in the center of the second groove.

a 1-1 stopper and a 2-1 stopper disposed apart from each other along the optical axis direction and adjacent to the first side; and a 1-2 stopper and a 2-2 stopper disposed spaced apart along the optical axis direction and adjacent to the second side, wherein the 1-1 stopper and the 1-2 stopper are perpendicular to the optical axis direction. They overlap in one direction, and the 2-1 stopper and the 2-2 stopper may be arranged to be offset in a direction perpendicular to the optical axis direction.

A camera actuator according to an embodiment includes a housing formed on a first side and including a first hole and a second hole spaced apart from each other; a first lens assembly moving in the optical axis direction within the housing; and a first driving unit that moves the first lens assembly, wherein the first driving unit includes a first magnet disposed in the first lens assembly and a first coil facing the first magnet, One coil is disposed on the first side of the housing and includes a first sub-coil and a second sub-coil sequentially arranged in the optical axis direction, the first sub-coil is disposed in the first hole, and the first sub-coil is disposed in the first hole. 2 sub-coils are disposed in the second hole.

The housing includes a first part disposed between the first hole and the second hole, and the first part may overlap the first coil in the optical axis direction.

A camera actuator according to an embodiment includes a housing including a first side and a second side facing each other; a first lens assembly and a second lens assembly moving in the optical axis direction within the housing; a first driving unit that moves the first lens assembly; and a second driving unit that moves the second lens assembly, wherein the first driving unit includes a first magnet disposed in the first lens assembly and a first magnet disposed on the first side facing the first magnet. It includes a sub-coil and a second sub-coil, and the second driving unit includes a second magnet disposed in the second lens assembly, a third sub-coil and a fourth sub-coil disposed on the second side and facing the second magnet. It includes a coil, and the housing includes a first reinforcing member disposed between the first subcoil and the second subcoil, and a second reinforcing member disposed between the third subcoil and the fourth subcoil.

The first reinforcing member and the second reinforcing member may not overlap in a direction perpendicular to the optical axis direction.

According to an embodiment of the present invention, a camera actuator and camera module with improved rigidity through a reinforcing member are implemented.

Additionally, embodiments of the present invention can implement a camera actuator and a camera module that provide an improved moving distance through a reinforcing member.

Additionally, embodiments of the present invention can implement camera actuators and camera modules that provide different driving distances and have improved driving efficiency through different lengths between sub-coils.

In addition, embodiments of the present invention can implement a camera actuator and a camera module that improve the balance of cracks and impacts of lenses in a lens assembly moving in the optical axis direction by adjusting the positions of a plurality of stoppers.

Embodiments of the present invention can implement a camera actuator applicable to ultra-slim, ultra-small and high-resolution cameras.

The various and beneficial advantages and effects of the present invention are not limited to the above-described content, and may be more easily understood through description of specific embodiments of the present invention.

1 is a perspective view of a camera module according to an embodiment,
Figure 2 is an exploded perspective view of a camera module according to an embodiment,
Figure 3 is a view viewed from AA' in Figure 1,
4 is a perspective view of a second camera actuator according to an embodiment;
5 is an exploded perspective view of a second camera actuator according to an embodiment;
Figure 6 is a cross-sectional view taken along line DD' in Figure 4,
7 and 8 are diagrams explaining each operation of the lens assembly according to an embodiment,
9 is a diagram explaining the operation of the second camera actuator according to the embodiment;
Figure 10 is a perspective view of a partial configuration of a second camera actuator according to an embodiment;
Figure 11 is a diagram showing an optical drive coil, an optical drive magnet, and a yoke according to an embodiment;
FIG. 12 is a diagram illustrating movement of an optical drive magnet by a drive unit according to an embodiment;
Figure 13 is a perspective view showing the housing, coil, and stopper of the second camera actuator according to the embodiment;
Figure 14 is another perspective view showing the housing, coil, and stopper of the second camera actuator according to the embodiment;
15 is a perspective view of the housing of the second camera actuator according to the embodiment;
16 is a side view of the housing of the second camera actuator according to the embodiment;
17 is another side view of the housing of the second camera actuator according to the embodiment;
Figure 18 is a view cut along EE' in Figure 16,
Figure 19 is a view taken by cutting along FF' in Figure 16,
Figure 20 is a view taken along line HH' in Figure 16;
Figure 21 is a view taken along line II' in Figure 16,
Figure 22 is a view with a coil and a stopper added to Figure 16;
Figure 23 is a view with a coil and a stopper added to Figure 17;
24 is a top view of the coil and stopper of the second camera actuator according to the embodiment;
25 is a side view of a coil of a second camera actuator according to an embodiment;
26 is another side view of the coil of the second camera actuator according to the embodiment;
27 is a top view of a coil of a second camera actuator according to an embodiment;
28 is a graph explaining the work effect of the second camera actuator according to the embodiment;
Figure 29 is a schematic diagram showing a circuit board according to an embodiment.
Figure 30 is a perspective view of a mobile terminal to which a camera module is applied according to an embodiment;
Figure 31 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

Since the present invention can be subject to various changes and can have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

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

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings, but identical or corresponding components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

Figure 1 is a perspective view of a camera module according to an embodiment, Figure 2 is an exploded perspective view of a camera module according to an embodiment, and Figure 3 is a view viewed from AA' in Figure 1.

Referring to FIGS. 1 and 2 , the camera module 1000 according to the embodiment may include a cover (CV), a first camera actuator 1100, a second camera actuator 1200, and a circuit board 1300. . Here, the first camera actuator 1100 may be used interchangeably as the first actuator, and the second camera actuator 1200 may be used interchangeably as the second actuator.

The cover CV may cover the first camera actuator 1100 and the second camera actuator 1200. The coupling force between the first camera actuator 1100 and the second camera actuator 1200 can be improved by the cover CV.

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

And the first camera actuator 1100 may be an Optical Image Stabilizer (OIS) actuator. For example, the first camera actuator 1100 may move the optical member in a direction perpendicular to the optical axis (axis of incident light).

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

The first camera actuator 1100 can change the path of light. In an embodiment, the first camera actuator 1100 may vertically change the optical path through an internal optical member (eg, a prism or mirror). For example, the optical member may change light from the first direction (X-axis direction) to the third direction (Z-axis direction). Alternatively, the optical member may change light from the first axis to the second axis. With this configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal is placed within the mobile terminal through a change in the optical path, so that magnification, auto focusing (AF), zoom, and OIS functions can be performed. You can.

However, it is not limited to this and the first camera actuator 1100 can change the optical path vertically or at a predetermined angle multiple times.

The second camera actuator 1200 may be placed behind the first camera actuator 1100. The second camera actuator 1200 may be combined with the first camera actuator 1100. And mutual bonding can be achieved in various ways.

Additionally, the second camera actuator 1200 may be a zoom actuator or an auto focus (AF) actuator. For example, the second camera actuator 1200 supports one or more lenses and can perform an auto-focusing function or a zooming function by moving the lenses according to a control signal from a predetermined control unit.

And one or more lenses move independently or individually along the optical axis direction to

The circuit board 1300 may be placed 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. Additionally, there may be a plurality of circuit boards 1300.

A camera module according to an embodiment may be composed of a single or multiple camera modules. For example, the plurality of camera modules may include a first camera module and a second camera module.

And the first camera module may include a single or multiple actuators. For example, the first camera module may include a first camera actuator 1100 and a second camera actuator 1200.

Additionally, the second camera module may be placed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving the lens unit. The actuator may be a voice coil motor, micro actuator, silicon actuator, etc., and may be applied in various ways such as electrostatic method, thermal method, bimorph method, and electrostatic force method, but is not limited thereto. Additionally, in this specification, the camera actuator may be referred to as an actuator, etc. Additionally, a camera module consisting of a plurality of camera modules can be mounted in various electronic devices such as mobile terminals. Furthermore, an actuator may be a device that moves or tilts a lens or optical member. However, hereinafter, the actuator will be described as including a lens or optical member. Furthermore, the actuator may be called a ‘lens transfer device’, ‘lens transfer device’, ‘optical member transfer device’, ‘optical member transfer device’, etc.

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

Light may be incident into the camera module or the first camera actuator through an opening area located on the upper surface of the first camera actuator 1100. That is, light is primarily incident into the interior of the first camera actuator 1100 along a vertical direction (e.g., can be changed. Then, the light may pass through the second camera actuator 1200 and be incident on the image sensor IS located at one end of the second camera actuator 1200 (PATH). In this specification, the Z-axis direction or the third direction is described as the optical axis direction as follows. Additionally, the first direction, the X-axis direction, will be described as a vertical direction. And the second direction, the Y-axis direction, is described as the horizontal direction.

In this specification, the bottom refers to one side in the first direction. And the first direction is the X-axis direction in the drawing and can be used interchangeably with the second axis direction. The second direction is the Y-axis direction in the drawing and can be used interchangeably with the first axis direction. The second direction is perpendicular to the first direction. Additionally, the third direction is the Z-axis direction in the drawing, and may be used interchangeably with the third axis direction. And the third direction is a direction perpendicular to both the first and second directions. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are directions perpendicular to the optical axis. In addition, in the description of the first and second camera actuators below, the optical axis direction is the third direction (Z-axis direction), and the description below will be based on this.

Additionally, in this specification, the inside may be a direction from the cover CV toward the first camera actuator, and the outside may be a direction opposite to the inside. That is, the first camera actuator and the second camera actuator may be located inside the cover (CV), and the cover (CV) may be located outside the first camera actuator or the second camera actuator.

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

In addition, the camera module according to the embodiment can implement OIS through control of the optical path through the first camera actuator, thereby minimizing the occurrence of decenter or tilt phenomenon and providing the best optical characteristics. I can pay it.

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, and a third lens assembly.

also. The second camera actuator 1200 is equipped with a coil and a magnet and can perform a high-magnification zooming function and an autofocus function.

For example, the first lens assembly and the second lens assembly may be moving lenses that move through a coil, magnet, and guide pin, and the third lens assembly may be a fixed lens, but the lens assembly is not limited thereto. For example, the third lens assembly may perform the function of a focator to image light at a specific location, and the first lens assembly may function to reimage the image formed by the third lens assembly, which is the condenser, at another location. It can perform a variator function. Meanwhile, in the first lens assembly, the distance to the subject or the image distance may change significantly, causing a large change in magnification, 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. Meanwhile, the point where an image is formed in the first lens assembly, which is a variable sensor, may differ slightly depending on the location. Accordingly, the second lens assembly can perform a position compensation function for the image formed by the inverter. For example, the second lens assembly may perform a compensator function to accurately image an image imaged by the first lens assembly, which is a variable sensor, at the actual image sensor position. For example, the first lens assembly and the second lens assembly may be driven by electromagnetic force caused by interaction between a coil and a magnet. The above description can be applied to the lens assembly described later. Additionally, the first to third lens assemblies may move along the optical axis direction, that is, the third direction. Additionally, the first to third lens assemblies may move in the third direction independently or dependent on each other. In the present invention, the first lens assembly and the second lens assembly can move along the optical axis direction. And the third lens assembly may be located at the front end of the first lens assembly or at the rear end of the second lens assembly. And the third lens assembly may not move in the optical axis direction. That is, the third lens assembly may be a fixing unit. Additionally, the first and second lens assemblies may be moving parts.

Meanwhile, when the OIS actuator and the AF/Zoom actuator are arranged according to an embodiment of the present invention, magnetic field interference with the AF/Zoom magnet can be prevented when OIS is driven. Since the first driving 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.

In particular, in the first camera actuator 1100, the optical member RM may be tilted along the X-axis or tilted along the Y-axis. Accordingly, the optical path can be easily changed according to the X-axis tilt or Y-axis tilt.

The optical member RM may be seated on a holder of the first camera actuator. In an embodiment, the optical member RM may be made of a mirror or prism. Hereinafter, a prism is shown, but as in the above-described embodiment, it may be composed of a plurality of lenses. Alternatively, the optical member RM may be composed of a plurality of lenses, prisms, or mirrors. Additionally, the optical member RM may include a reflection portion disposed therein. However, it is not limited to this.

By driving a VCM or the like in the first camera actuator 1100, the optical member RM may be tilted along the X-axis or tilted along the Y-axis. That is, OIS may be implemented while the optical member RM is tilted or rotated based on the Y-axis direction or the X-axis direction.

Figure 4 is a perspective view of a second camera actuator according to an embodiment, Figure 5 is an exploded perspective view of a second camera actuator according to an embodiment, Figure 6 is a cross-sectional view taken along line DD' in Figure 4, and Figures 7 and 8 is a diagram explaining the operation of each lens assembly according to an embodiment, and FIG. 9 is a diagram explaining the operation of the second camera actuator according to the embodiment.

Referring to FIGS. 4 to 6, the second camera actuator 1200 (or camera device or zoom lens transfer device or zoom lens transfer device or lens transfer device) according to the embodiment includes a lens unit 1220, a housing 1230, and a driving unit. It may include (1250), a base portion (1260), a substrate portion (1270), and stoppers (ST1, ST2). Furthermore, the second camera actuator 1200 may further include a shield can (not shown), an elastic part (not shown), and a joining member (not shown).

Additionally, as will be described later, the lens group may move along the optical axis direction. And the lens group can be combined with the lens assembly and move together along the optical axis direction. At this time, the second camera actuator may include a moving part that moves in the optical axis direction like the lens group, and a fixed part that does not move along the optical axis and is relatively fixed, unlike the moving part. In this embodiment, the moving unit may include a lens assembly (eg, first and second lens assemblies) and an optical driving magnet (first and second driving magnets). And the fixing part may include a housing, a substrate part, an optical drive coil (first and second coils), and a Hall sensor. Furthermore, a driving magnet may be placed on either the moving part or the fixed part, and a driving coil may be placed on the other part. The moving distance of the lens assembly, which will be described later in response to this description, may correspond to the moving distance of the moving unit.

The shield can (not shown) is located in one area (e.g., the outermost) of the second camera actuator 1200, and is used for components described later (lens unit 1220, housing 1230, drive unit 1250, and base). It may be positioned to surround the unit 1260, the substrate unit 1270, and the image sensor (IS) disposed on the circuit board at the rear end.

This shield can (not shown) can block or reduce electromagnetic waves generated from the outside. Accordingly, the occurrence of malfunctions in the driving unit 1250 may be reduced.

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

Additionally, the lens unit 1220 may be located within the 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 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. Additionally, there may be a plurality of lens groups 1221, but the description below will be based on one lens group.

The lens group 1221 is coupled to the moving assembly 1222 and moves in the 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. You can.

In an embodiment, the lens group 1221 may include a first lens group 1221a, a second lens group 1221b, and a third lens group 1221c. The first lens group 1221a, the second lens group 1221b, and the third lens group 1221c may be sequentially arranged along the optical axis direction. Furthermore, the lens group 1221 may further include a fourth lens group. The fourth lens group may be disposed behind the third lens group 1221c.

The first lens group 1221a may be fixed by combining with the first housing (or fixing assembly). In other words, the first lens group 1221a may not move along the optical axis direction.

The second lens group 1221b can be combined with the first lens assembly 1222a and move in the third direction or the optical direction. Magnification adjustment may be performed by moving the first lens assembly 1222a and the second lens group 1221b.

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

However, the number of lens groups is not limited, and the above-described fourth lens group may not be present, 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. This moving assembly 1222 is used interchangeably with the first and second lens assemblies. The moving assembly 1222 or the lens assembly can move along the optical axis direction (Z-axis direction) within the housing 1230. And the moving assembly 1222 can be combined with the lens group 1221 in various ways. Additionally, the moving assembly 1222 may include a groove on its side, and may be coupled to the first magnet 1252a and the second magnet 1252b through the groove. A coupling member, etc. may be applied to the groove.

Additionally, the moving assembly 1222 may be coupled with elastic portions (not shown) at the top and rear ends. Accordingly, the moving assembly 1222 moves in the third direction (Z-axis direction) and may be supported by an elastic unit (not shown). That is, the position of the moving assembly 1222 can be maintained in the third direction (Z-axis direction). The elastic portion (not shown) may be made of various elastic elements such as leaf springs.

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

The 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 image sensor and the area where the second lens group 1221b is seated in the first lens assembly 1222a. there is.

The first lens assembly 1222a and the second lens assembly 1222b may face a first guide part and a second guide part, respectively. The first guide part and the second guide part may be located on the first side 1232a and the second side 1232b of the housing 1230 (or second housing), which will be described later. The first guide portion and the second guide portion may be disposed integrally or separately on the first side 1232a and the second side 1232b of the housing 1230 (or second housing), which will be described later. Below, the description will be based on the integrated type.

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

The housing 1230 may be disposed between the lens unit 1220 and the shield can (not shown). And the housing 1230 may be arranged to surround the lens unit 1220.

The housing 1230 may include a first housing 1231, a second housing 1232, and a cover base (CB). The first housing 1231 can be combined with the first lens group 1221a and can also be combined with the first camera actuator described above. The first housing 1231 may be located in front of the second housing 1232. The first housing may be called a 'fixed assembly', a 'fixed lens assembly', a 'fixed lens accommodating portion', etc. The second housing may be called 'main barrel', 'lens barrel', 'barrel', etc.

And the second housing 1232 may be located at the rear end of the first housing 1231. The first and second lens assemblies and the lens unit 1220 may be seated inside the second housing 1232.

The housing 1230 (or the second housing 1232) may have a hole formed on a side. A first coil 1251a and a second coil 1251b may be disposed in the hole. The hole may be located to correspond to the groove of the moving assembly 1222 described above. At this time, there may be a plurality of first coils 1251a and second coils 1251b.

In an embodiment, the housing 1230 (particularly the second housing 1232) may include a first side 1232a and a second side 1232b. The first side 1232a and the second side 1232b may be positioned to correspond to each other. For example, the first side 1232a and the second side 1232b may be arranged symmetrically with respect to the third direction. Optical driving coils 1251 may be located on the first side 1232a and the second side 1232b. Additionally, the substrate portion 1270 may be seated on the outer surfaces of the first side portion 1232a and the second side portion 1232b. In other words, the first substrate may be located on the outer surface of the first side 1232a, and the second substrate may be located on the outer surface of the second side 1232b.

The cover base (CB) may be disposed between the first housing 1231 and the second housing 1232. The cover base CB may prevent a lens (eg, a first lens group) disposed or accommodated in the first housing 1231 (or a fixing assembly) from being damaged by impact. That is, the cover base CB can absorb the impact of the mobile assembly when the mobile assembly within the second housing 1232 moves. Furthermore, the cover base CB may include a 1-1 stopper ST1a and a 1-2 stopper ST1b, which will be described later, on the rear or lower surface of the cover base CB. For example, the 1-1 stopper (ST1a) and the 1-2 stopper (ST1b) may be located between the cover base (CB) and the moving assembly (eg, the first lens assembly). Accordingly, the moving assembly may primarily contact the 1-1 stopper (ST1a) and the 1-2 stopper (ST1b). Accordingly, the reliability of the lens group can be improved.

Furthermore, the cover base CB may be coupled to the first housing 1231 and the second housing 1232 using a joining member (eg, epoxy). Accordingly, by adjusting the shape of the cover base (CB), coupling with the first housing 1231 and the second housing 1232 can be easily achieved. Additionally, by adding the cover base CB, ease of manufacturing of at least one of the first housing 1231 and the second housing 1232 can be secured.

Furthermore, the first guide portion and the second guide portion may be located on the first side 1232a and the second side 1232b of the housing 1230 (particularly, the second housing 1232).

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

The first guide portion and the second guide portion may include at least one groove (eg, guide groove) or recess. And the first ball (B1) or the second ball (B2) can be seated in the groove or recess. The second camera actuator 1200 may further include a cheek portion. The ball portion may include a first ball (B1) and a second ball (B2). By the ball portion, the first and second lens assemblies can move along the optical axis direction. At this time, the ball part may include at least one rolling member and a ball. And at least one ball can move along the guide grooves of the first and second guide parts. Additionally, at least one ball may move along the recess or groove of the first and second lens assemblies. Accordingly, the first ball B1 or the second ball B2 can move in the third direction (Z-axis direction) within the guide groove of the first guide part or the guide groove of the second guide part.

Or, the first ball B1 or the second ball B2 is positioned along a rail formed inside the first side 1232a of the housing 1230 or a rail formed inside the second side 1232b of the housing 1230. Can move in 3 directions.

Accordingly, the first lens assembly 1222a and the second lens assembly 1222b can move in the third direction or the optical axis direction. At this time, the second lens assembly 1222b may be disposed adjacent 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. Accordingly, depending on the location, the first ball B1 may at least partially overlap the second ball B2 along the first direction (X-axis direction).

Additionally, the first guide portion and the second guide portion may include a first guide groove facing the first recess (RS1). Additionally, the first guide part and the second guide part may include a second guide groove facing the second recess RS2. The first guide groove and the second guide groove may be grooves extending in the third direction (Z-axis direction). And the first guide groove and the second guide groove may be grooves of different shapes. For example, the first guide groove may be a groove with an inclined side, and the second guide groove may be a groove with a side perpendicular to the bottom.

Additionally, there may be a plurality of first or second guide grooves. Additionally, a plurality of balls with at least partially different diameters may be located within the plurality of guide grooves.

The second magnet 1252b may be positioned to face the second coil 1251b. Additionally, 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 be composed of at least one coil. For example, the first coil 1251a may be composed of a plurality of coils. The second coil 1251b may be composed of a plurality of coils. Furthermore, even when the first coil and the second coil are one coil, a long stroke described later can be implemented.

In an embodiment, the optical driving coil 1251 may be composed of sub-coils sequentially arranged along the optical axis direction (Z-axis direction). For example, a plurality of sub-coils may be sequentially arranged in the optical axis direction on each side of the main barrel 1232. The second housing can be used interchangeably with the ‘main barrel’.

In this embodiment, the optical driver (or driver, 1250) may include a first driver and a second driver. The first driving unit may provide driving force to move the first lens assembly 1222a along the optical axis direction. The first driving unit may include a first coil 1251a and a first magnet 1252a. Additionally, the first driving unit may include a first driving coil and a first driving magnet. Accordingly, the first coil 1251a may be referred to as a ‘first driving coil’. And the first magnet 1252a may be called a ‘first driving magnet’.

And the second driving unit may provide driving force to move the second lens assembly 1222b along the optical axis direction. The second driving unit may include a second coil 1251b and a second magnet 1252b.

Additionally, the second driving unit may include a second driving coil and a second driving magnet. Accordingly, the second coil 1251b may be called a ‘second driving coil’. And the second magnet 1252b may be called a ‘second driving magnet’.

The elastic unit (not shown) may include a first elastic member (not shown) and a second elastic member (not shown). The first elastic member (not shown) may be coupled to the upper surface of the moving assembly 1222. The second elastic member (not shown) may be coupled to the lower surface of the moving assembly 1222. Additionally, the first elastic member (not shown) and the second elastic member (not shown) may be formed of leaf springs as described above. Additionally, the first elastic member (not shown) and the second elastic member (not shown) may provide elasticity for movement of the moving assembly 1222. However, it is not limited to the above-described positions, and the elastic portion may be placed in various positions.

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

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

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

The optical driving coil 1251 may include a first coil 1251a and a second coil 1251b. Additionally, as described above, the first coil 1251a and the second coil 1251b may be composed of a plurality of sub-coils. Additionally, the first coil 1251a and the second coil 1251b may be disposed in a hole formed on the side of the housing 1230. And the first coil 1251a and the second coil 1251b may be electrically connected to the substrate portion 1270. Accordingly, the first coil 1251a and the second coil 1251b can receive current, etc. through the substrate portion 1270.

Additionally, the optical drive coil 1251 may be coupled to the substrate portion 1270 through a yoke or the like.

Additionally, in an embodiment, the optical drive coil 1251 is a fixed element together with the substrate portion 1270. In contrast, the 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 optical driving magnet 1252 may include a first magnet 1252a and a second magnet 1252b.

In an embodiment, the first coil 1251a may include a first sub-coil (SC1a) and a second sub-coil (SC2a). The first sub-coil (SC1a) and the second sub-coil (SC2a) may be sequentially arranged in the optical axis direction. The first sub-coil (SC1a) may be located closer to the first camera actuator than the second sub-coil (SC2a).

And the second coil 1251b may include a third sub-coil (SC1b) and a fourth sub-coil (SC2b). The third sub-coil (SC1b) and the fourth sub-coil (SC2b) may be sequentially arranged in the optical axis direction. The third sub-coil (SC1b) may be located closer to the first camera actuator than the fourth sub-coil (SC2b).

And 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. In this way, the first magnet 1252a and the second magnet 1252b can be equally arranged to face the two sub-coils.

Furthermore, the coils of the first and second driving units in the second camera actuator may be described as including first sub-coils (SC1a, SC1b) and second sub-coils (SC2a, SC2b). However, in the specification, the sub-coil that drives the second lens assembly will be described interchangeably as a third sub-coil and a fourth sub-coil.

The first sub-coil (SC1a) and the second sub-coil (SC2a) may be arranged to 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, one of the one end and the other end of the first subcoil (SC1a) may be connected to one of the one end and the other end of the second subcoil (SC2a) as a node. Additionally, the other one of the first and second ends of the first subcoil (SC1a) may be connected to another node of the second subcoil (SC2a). That is, the current applied to the first sub-coil (SC1a) and the second sub-coil (SC2a) may be distributed to each sub-coil. Accordingly, the first sub-coil (SC1a) and the second sub-coil (SC2a) are electrically connected in parallel, thereby reducing heat generation.

In addition, the polarity of one side of the first driving magnet 1252a facing the first driving coils SC1a and SC2a is the polarity of one side of the second driving magnet 1252b facing the second driving coils SC1b and SC2b. may 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, an N pole). The outer surface of the first driving magnet 1252a and the outer surface of the second driving magnet 1252b may have one of the N pole and the S pole (eg, S pole). Here, the inner side may be a side adjacent to the optical axis based on the optical axis, and the outer side may be a side farthest from the optical axis. Additionally, the first magnet 1252a may have a first pole on the first surface BSF1 facing the optical driving coil (eg, first coil). Additionally, the first magnet 1252a may have a second pole on the second surface BSF2, which is opposite to the first surface BSF1. The second magnet 1252b may have a first pole on the first surface BSF1 facing the optical driving coil (eg, second coil). Additionally, the second magnet 1252b may have a second pole on the second surface BSF2, which is 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.

Alternatively, the first driving magnet and the second driving magnet may have a structure in which N-pole/S-pole or S-pole/N-pole are sequentially arranged along the optical axis direction.

Additionally, the third sub-coil (SC1b) and the fourth sub-coil (SC2b) may be arranged to be spaced apart from each other in the optical axis direction. The third sub-coil (SC1b) and fourth sub-coil (SC2b) may be connected in parallel to each other. For example, one of the one end and the other end of the third subcoil (SC1b) may be connected to one of the one end and the other end of the fourth subcoil (SC2b) as a node.

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

The yoke portion 1240 may be disposed on the substrate portion 1270. The yoke portion 1240 can maintain the posture of the first and second lens assemblies by forming an attractive force with adjacent magnets. That is, the yoke portion 1240 may provide holding force for the moving assembly. The yoke part 1240 may include a first yoke part 1241 and a second yoke part 1242. The first yoke portion 1241 may be disposed on the first substrate 1271. The second yoke portion 1242 may be disposed on the second substrate 1272.

The base unit 1260 may be located between the lens unit 1220 and the image sensor in the circuit board. Components such as a filter may be fixed to the base portion 1260. Additionally, the base portion 1260 may be arranged to surround the image sensor described above. With this configuration, the image sensor is free from foreign substances, etc., so the reliability of the device can be improved. However, this will be removed and explained in some drawings below.

Additionally, the second camera actuator 1200 may be a zoom actuator or an auto focus (AF) actuator. For example, the second camera actuator supports one or more lenses and can perform an auto-focusing function or a zoom function by moving the lenses 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 be comprised of a plurality of lens assemblies. For example, the second camera actuator may include at least one of a third lens assembly (not shown), and a guide pin (not shown) in addition to the first lens assembly 1222a and the second lens assembly 1222b. . The above-described content may be applied to this. Accordingly, the second camera actuator can perform a high-magnification zooming function through the driving unit.

The image sensor may be located inside or outside the second camera actuator. In 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. An image sensor can receive light and convert the received light into an electrical signal. Additionally, the image sensor may consist of a plurality of pixels in an array form. And the image sensor may be located on the optical axis.

The substrate portion 1270 may be in contact with the side of the housing. For example, the substrate portion 1270 is located on the outer surface (first side) of the first side of the housing, particularly the second housing, and the outer surface (second side) of the second side, the first side and the second side. You can come into contact with.

The second camera actuator includes a first stopper (ST1a, ST1b) disposed at one end (or front end) within the housing (or second housing 1232) and a second stopper (ST2a, ST2b) disposed at the other end (or rear end). It may further include.

The first stopper (ST1) may be located at one end of the housing. For example, the first stopper ST1 may be located at an end of the second housing or main barrel 1232 in a direction opposite to the optical axis direction. In an embodiment, the first stopper ST1 may be located on the inner wall or inner wall of the housing or the main barrel 1232. The first stopper ST1 may be located on a first inner wall among the first and second inner walls facing each other along the optical axis direction in the main barrel 1232. Additionally, the first stopper (ST1) may include a 1-1 stopper (ST1a) disposed on one side and a 1-2 stopper (ST1b) disposed on the other side. For example, the 1-1 stopper ST1a may be placed on one side of the first inner wall. And the 1-2 stopper (ST1b) may be disposed on the other side of the first inner wall. The 1-1 stopper (ST1a) may be located adjacent to the first side. The 1-2 stopper (ST1b) may be located adjacent to the second side. One side and the other side may mean one side and its opposite side in a second direction.

Alternatively, the 1-1 stopper ST1a may overlap the guiding part of the first lens assembly in the optical axis direction. The 1-2 stopper ST1b may overlap the lens protrusion of the first lens assembly in the optical axis direction.

Additionally, the first stopper ST1 may further include first to third stoppers disposed on the other side of the main barrel 1232. The 1-3 stoppers may be positioned to overlap the guiding portion of the second lens assembly 1222b in the optical axis direction.

Additionally, the second stopper ST2 may be disposed at the second housing or the other end of the main barrel 1232. For example, the second stopper ST2 may be located at an end of the second housing or main barrel 1232 in the optical axis direction. In an embodiment, the second stopper ST2 may be located on the inner wall or inner wall of the housing or the main barrel 1232. The second stopper ST2 may be located on a second inner wall among the first and second inner walls facing each other along the optical axis direction in the main barrel 1232. The first inner wall may be adjacent to the first camera actuator or the first lens assembly. The second inner wall may be adjacent to the image sensor.

Additionally, the second stopper (ST2) may include a 2-1 stopper (ST2a) disposed on one side and a 2-2 stopper (ST2b) disposed on the other side. The 2-1 stopper (ST2a) may be located adjacent to the first side. The 2-2 stopper (ST2b) may be located adjacent to the second side. For example, the 2-1 stopper ST2a may be placed on one side of the first inner wall. And the 2-2 stopper (ST2b) may be disposed on the other side of the first inner wall.

Referring to FIGS. 7 and 8, electromagnetic force will be described below based on one coil. In the camera device according to the embodiment, electromagnetic force (DEM1) is generated between the first magnet (1252a) and the first coil (1251a) 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 side of the housing through the first ball B1 in the direction opposite to the third direction. At this time, the first magnet 1252a and the second magnet 1252b do not move to the area facing the edges of the first and second sub-coils. Accordingly, electromagnetic force is formed based on the flow of current in adjacent areas of the first subcoil and the second subcoil.

As described above, 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 unipolar magnetization method. For example, in an embodiment, the surface (first surface) facing the outer surface of the first magnet 1252a may be the S pole. And the outer surface of the first magnet 1252a may be the surface facing the first coil 1251a. And the first side and the opposite side may be the N pole. Accordingly, only one of the N pole and the S pole can be positioned to face the first coil 1251a. Here, the description will be based on the fact that the outer surface of the first magnet 1252a is the S pole. Furthermore, the first coil 1251a is composed of a plurality of sub-coils, and currents may flow in opposite directions in the plurality of sub-coils. That is, the current may flow at the same level as 'DE1' in the area adjacent to the second sub-coil (SC2a) in the first sub-coil (SC1a).

In other words, the current direction of the first area of the first subcoil SC1a and the second area of the second subcoil SC2a may be the same. The first area of the first sub-coil (SC1a) 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 (e.g., disposed along the first direction). ) area. The second area 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 (e.g., disposed along the first direction). ) area.

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

At this time, since the first coil 1251a is fixed to the side of the housing, the first lens assembly 1222a on which the first magnet 1252a is disposed moves in the Z-axis direction by electromagnetic force DEM1 according to the current direction. can move in the opposite direction. That is, the optical drive magnet can move in the opposite direction of the electromagnetic force applied to the optical drive coil. Additionally, the direction of electromagnetic force may change depending on the current of the coil and the magnetic force of the magnet.

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

The first lens assembly 1222a or the second lens assembly 1222b may include a first recess RS1 in which the first or second ball rests. Additionally, the first lens assembly 1222a or the second lens assembly 1222b may include a second recess RS2 in which the first or second ball rests. There may be a plurality of first recesses (RS1) and second recesses (RS2). The length of the first recess RS1 may be preset in the optical axis direction (Z-axis direction). Additionally, the length of the second recess RS2 may be preset in the optical axis direction (Z-axis direction). Accordingly, the movement distance of the first ball and the second ball in the direction of the optical axis within each recess can be adjusted. In other words, the first recess (RS1) or the second recess (RS2) may be a stopper for the first and second balls.

And 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 unipolar magnetization method.

Furthermore, the first coil 1251a is composed of a plurality of sub-coils, and currents may flow in opposite directions in the plurality of sub-coils. That is, the current may flow at the same level as 'DE1' in the area adjacent to the second sub-coil (SC2a) in the first sub-coil (SC1a).

Additionally, in the embodiment, either the N pole or the S pole of the second magnet 1252b may be positioned to face the second coil 1251b. And in the embodiment, the surface (first surface) facing the outer surface of the second magnet 1252b may be the S pole. Additionally, the first side may be the N pole. Hereinafter, the description will be made based on the fact that the first side as shown is the N pole.

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

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

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

Referring to FIG. 9, in the camera device according to the embodiment, the driving unit provides driving force to move the first lens assembly 1222a and the second lens assembly 1222b of the lens unit 1220 along the third direction (Z-axis direction). (F3A, F3B, F4A, F4B) can be provided. As described above, this driving unit may include an optical driving coil 1251 and an optical driving magnet 1252. Additionally, the lens unit 1220 can move along the third direction (Z-axis direction) due to the electromagnetic force formed between the optical drive coil 1251 and the optical drive magnet 1252.

At this time, the first coil 1251a and the second coil 1251b may be disposed in holes formed on the sides (eg, first side and second side) of the housing 1230. And the second coil 1251b may be electrically connected to the second substrate 1272. The first coil 1251a may be electrically connected to the first substrate 1271. 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 substrate portion 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) due to the electromagnetic force (F3A, F3B) between the first coil 1251a and the first magnet 1252a. You can move along. Additionally, the second lens group 1221b mounted on the first lens assembly 1222a may also move along the third direction.

And, by the electromagnetic force (F4A, F4B) between the second coil (1251b) and the second magnet (1252b), the second lens assembly (1222b) on which the second magnet (1252b) is seated moves in the third direction (Z-axis direction). You can move along. Additionally, the third lens group 1221c mounted 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 can be changed by moving the second lens group 1221b and the third lens group 1221c. In an embodiment, magnification may be changed by moving the second lens group 1221b. In other words, zooming can be achieved. Additionally, the focus can be adjusted by moving the third lens group 1221c. In other words, auto focusing can be achieved.

Additionally, the second camera actuator may be a fixed zoom or continuous zoom depending on the movement method of the second lens group (or third lens group).

Furthermore, the first Hall sensor 1253a and the second Hall sensor 1253b may be disposed in at least one of the first subcoil and the second subcoil. For example, the first Hall sensor 1253a and the second Hall sensor 1253b may overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may not overlap in the second direction. Alternatively, the first Hall sensor 1253a and the second Hall sensor 1253b may partially overlap in the second direction.

As the first lens assembly is driven, the first lens assembly 1222a may be positioned as close as possible to the first stoppers ST1a and ST1b. At this time, the distance between the guiding part and the 1-1 stopper ST1a in the first lens assembly 1222a may decrease. Additionally, the distance between the 1-2 stopper ST1b and the lens protrusion of the first lens assembly may also be reduced.

That is, when the first lens assembly 1222a moves maximum toward the first camera actuator, the first lens assembly 1222a may collide with the 1-1 stopper (ST1a) and the 1-2 stopper (ST1b). The 1-1 stopper and the 1-2 stopper may collide simultaneously or sequentially as the first lens assembly moves. In this embodiment, the 1-1 stopper and the 1-2 stopper may collide simultaneously with the movement of the first lens assembly.

Accordingly, even if a lens made of glass is disposed within (e.g., the frontmost) the first lens assembly 1222a (or the second lens assembly), the maximum movement position (mecha) of the first lens assembly 1222a (or the second lens assembly) position) can be minimized. In other words, the phenomenon of lens breaking can be suppressed. For example, at least one of the first lens assembly and the second lens assembly may include a lens including glass. And the glass may be located outermost within the first lens assembly or the second lens assembly.

As a modified example, in the event of a sequential collision, shock absorption occurs primarily in the guiding part, which has a large volume, etc., thereby minimizing damage to the first lens assembly.

Likewise, it may collide with the 2-2 stopper (ST2b) and the second lens assembly (1222b). That is, when the second lens assembly 1222b moves maximum in the image sensor or optical axis direction, the second lens assembly 1222b may collide with the 2-2 stopper (ST2b) and the 2-1 stopper (ST2a). . Accordingly, even if a lens made of glass is placed in the second lens assembly 1222b, collision at the maximum movement position (mecha position) of the first lens assembly 1222a can be minimized. In other words, the phenomenon of lens breaking can be suppressed. The same applies to the modified example.

In other words, when the first lens assembly 1222a moves, the 1-1 stopper ST1a and the 1-2 stopper ST1b may contact the first lens assembly 1222a. When the first lens assembly 1222a moves maximum from mecha to mecha, the first lens assembly 1222a may come into contact with the first stoppers ST1a and ST1b. For example, the first lens assembly 1222a may move to an end in the direction of the optical axis or to an end in a direction opposite to the direction of the optical axis. At this time, the first lens assembly 1222a may move to a point in contact with the first stopper or the second stopper. For example, when the first lens assembly 1222a moves, the camera module may be in a tele or wide state. When the first lens assembly 1222a is in contact with the first stopper, it may be in a wide state, and when the first lens assembly 1222a is in contact with the second stopper, it may be in a tele state.

By using this first stopper, the impact of movement of the first lens assembly 1222a and the second lens assembly 1222b can be reduced. As a result, as described above, the reliability of the first lens assembly 1222a and the second lens assembly 1222b and the reliability of the second and third lens groups inside can be improved. Furthermore, the movement range of the first lens assembly 1222a and the second lens assembly 1222b is limited, so that accurate magnification, etc. can be achieved.

Figure 10 is a perspective view of a partial configuration of a second camera actuator according to an embodiment.

Referring to FIG. 10, the first lens assembly 1222a and the second lens assembly 1222b may be arranged to be spaced apart in the optical axis direction (Z-axis direction).

The second guide part may be disposed opposite to the first guide part. In an embodiment, the first guide part and the second guide part may overlap at least partially in the second direction (Y-axis direction). With this configuration, the space efficiency of the driving unit for moving the first and second lens assemblies within the second camera actuator is improved, making it possible to easily miniaturize the second camera actuator.

As described above, the first ball and the first coil may be disposed adjacent to the first guide portion, and the second ball and the second coil may be disposed adjacent to the second guide portion as described above.

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

The first yoke YK1 may be located on the side of the first lens assembly 1222a. The second yoke YK2 may be located on the side 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 surround 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 a portion of the side surface of the first magnet 1252a. For example, the first yoke YK1 is made of divided members, and each divided member may be located on the inner and side surfaces of the first magnet 1252a. Accordingly, the coupling force between the unipolarly magnetized optical drive magnet and the yoke can be improved. Likewise, the second yoke YK2 may surround 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 a portion of the side surface of the second magnet 1252b. For example, the second yoke YK2 is made of divided members, and each divided member may be located on the inner and side surfaces of the second magnet 1252b.

Furthermore, the yoke may be positioned to engage not only the optical drive magnet but also the optical drive coil.

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

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

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.

And the first serve ball (B2a) and the second serve ball (B2b) may be located at the edges 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).

The plurality of balls may have the same or different diameters. For example, at least some 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. Additionally, 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, R3) of the balls located on the edges (the first and second sub balls) may be smaller than the diameters (R2) of the balls located on the inside (the third sub balls) among the plurality of balls. For example, the diameters (R1, 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, movement of the lens assembly by the plurality of balls can be performed accurately without tilting to one side.

This description of the plurality of balls can be equally applied to the first ball.

Additionally, as described above, the optical driving magnet may be comprised of a plurality of first magnets and second magnets. Additionally, the first magnet and the second magnet may face each other and have the same polarity disposed on the outside. That is, the first surface (outer surface) of the first magnet and the first surface (outer surface) of the second magnet may have a first pole. And the second surface (inner surface) of the first magnet and the second surface (inner surface) of the second magnet may have a second pole.

FIG. 11 is a diagram illustrating an optical driving coil, an optical driving magnet, and a yoke according to an embodiment, and FIG. 12 is a diagram explaining movement of the optical driving magnet by a driving unit according to an embodiment.

Referring to FIGS. 11 and 12, the length W5 of the first subcoil SC1a in the optical axis direction (Z-axis direction) is the length W6 of the second subcoil SC2a in the optical axis direction (Z-axis direction). ) may be the same as 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) of the optical drive coil in the optical axis direction (Z-axis direction) is greater than the length W2 (maximum length) in the optical axis direction (Z-axis direction) of the optical drive magnet 1252a. You can. With this configuration, the stroke by the optical drive magnet can be performed to the maximum. Furthermore, long strokes can be performed by a single-pole magnetized optical drive magnet.

In addition, in an embodiment, the maximum movement distance (MD) of the first lens assembly in the optical axis direction is greater than the length in the minor axis direction (first direction) of the hole (or hollow portion) of the first sub-coil (SC1a), It 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 portion) of the subcoil 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 portion) of the second sub-coil (SC2a), and the (Or 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, in an embodiment, the maximum moving distance of the second lens assembly in the optical axis direction is greater than the length in the short axis direction (first direction) of the hole (or hollow portion) of the third sub-coil (SC1b). ) may be equal to or smaller than the length of the hole (or the long axis direction (optical axis direction or third direction) of the hollow part).

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

Furthermore, the length W3 of the inner hole of the first subcoil SC1a in the optical axis direction may be equal to the length W4 of the inner hole of the second subcoil SC2a in the optical axis direction.

Additionally, the length W2 of the driving magnet 1252a in the optical axis direction (Z-axis direction) may be greater than the length W3 of the internal hole of the first sub-coil SC1a in the optical axis direction. Additionally, the length W2 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 optical drive magnet can move along the optical axis within the entire length in the optical axis direction of the optical drive coil.

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

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

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

The length (maximum length, W2) in the optical axis direction (Z-axis direction) of the optical driving magnet (or the first and second driving magnets) may be 0.6 times or less than the maximum length (W1) in the optical axis direction of the corresponding first driving coil. . Preferably, the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the optical driving magnet (or the first and second driving magnets) is 0.55 times the maximum length (W1) in the optical axis direction of the corresponding first driving coil. It may be below. More preferably, the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the optical driving magnet (or the first and second driving magnets) is 0.5 of the maximum length (W1) in the optical axis direction of the corresponding first driving coil. It may be below. As a result, the camera device can provide a long stroke with minimized back 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 optical driving magnet (or the first and second driving magnets) in the optical axis direction (Z-axis direction). For example, the maximum moving distance (MD) of the first lens assembly in the optical axis direction is 0.66 times or more than the length (maximum length, W2) in the optical axis direction (Z-axis direction) of the optical driving magnet (or the first and second driving magnets). It may be 0.92 times or less. Accordingly, the generation of back electromotive force can be suppressed as much as possible.

Additionally, in an embodiment, the overall length W1 (or maximum length) of the optical drive coil in the optical axis direction (Z-axis direction) may be 18 mm to 20 mm. Furthermore, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be 8 mm to 12 mm. And the length W3 in the hole (or the long axis direction (optical axis direction or third direction) of the hollow part) 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 portion may be 5.6 mm to 8.7 mm.

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

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

Additionally, in an embodiment, according to unipolar magnetization of the 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 either clockwise or counterclockwise directions in the second sub-coil (SC2a).

Furthermore, the length W2 of the optical drive magnet in the optical axis direction (Z-axis direction) may be greater than the moving distance in the optical axis direction of the lens assembly. That is, the length W2 of the 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. With this configuration, driving force for movement in the optical axis direction can be safely provided.

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

For example, the movement distance of the first lens assembly 1222a in the optical axis direction (Z-axis direction) may be smaller than the movement distance 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 in the optical axis direction. The first lens assembly 1222a may be located at the front of the second lens assembly 1222b.

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

And since it is a coil extending in the first direction that provides driving force by actual electromagnetic force, the area where the first sub-coil (SC1a) and the optical driving magnet 1252a overlap is the second sub-coil (SC2a) and the optical driving magnet ( The areas where 1252a) overlap may be the same. As a result, generation of back electromotive force can be minimized and a long stroke can be implemented.

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

And in the case of 'maximum movement 2', it can correspond to the case where the optical driving magnet 1252a moves maximum in the third direction (Z-axis direction). At this time, the optical driving magnet 1252a may have a larger overlapping area with the second sub-coil SC2a than with the first sub-coil SC1a. Furthermore, the optical driving magnet 1252a may at least partially overlap the inner hole of the second sub-coil SC2a. More specifically, the optical driving magnet 1252a may be spaced apart from the edge of the inner hole of the second sub-coil SC2a in the optical axis direction by a predetermined distance GP1. With this configuration, the back electromotive force generated at the end of the second sub-coil (SC2a) can be reduced. For example, the optical driving magnet 1252a may be moved with the maximum stroke to an area that does not overlap with the 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 optical drive magnet 1252a in the optical axis direction is small, a long stroke of the camera actuator can be efficiently implemented through unipolar magnetization and the current direction of the plurality of optical drive coils.

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

FIG. 13 is a perspective view showing a housing, coil, and stopper of a second camera actuator according to an embodiment, FIG. 14 is another perspective view showing a housing, coil, and stopper of a second camera actuator according to an embodiment, and FIG. 15 is a perspective view of the housing of the second camera actuator according to the embodiment, FIG. 16 is a side view of the housing of the second camera actuator according to the embodiment, and FIG. 17 is another side view of the housing of the second camera actuator according to the embodiment. , FIG. 18 is a view cut along EE' in FIG. 16, FIG. 19 is a view cut along FF' in FIG. 16, FIG. 20 is a view cut along HH' in FIG. 16, and FIG. 21 is a view This is a view cut from 16 to ‘II’.

Referring to FIGS. 13 to 17 , in the second camera actuator according to the embodiment, the housing (eg, second housing) may include a first side 1232a and a second side 1232b. The first side 1232a may be located on one side of the housing. For example, the first side 1232a may be adjacent to the first driving unit. Accordingly, the first driving unit can easily move the first lens assembly in the optical axis direction.

The second side 1232b may be located on the other side of the housing. The second side 1232b may be adjacent to the second driving unit. Accordingly, the second driving unit can easily move the second lens assembly in the optical axis direction.

The first side 1232a and the second side 1232b may be positioned opposite to each other. In an embodiment, the first side 1232a and the second side 1232b may be positioned to correspond to each other. In the housing or main barrel 1232, the first side 1232a and the second side 1232b may be positioned to face each other.

As described above, the driving unit may include a first driving unit and a second driving unit. The first driving unit may include a first coil 1251a and a first magnet facing the first coil 1251a. Additionally, the second driving unit may include a second coil 1251b and a second magnet facing the second coil 1251b.

In an embodiment, the first coil 1251a may include a first sub-coil (SC1a) and a second sub-coil (SC2a) sequentially arranged in the optical axis direction. The first sub-coil (SC1a) and the second sub-coil (SC2a) may be disposed on the main barrel 1232. In an embodiment, the first sub-coil (SC1a) and the second sub-coil (SC2a) may be located on the first side (1232a) of the main barrel (1232). For example, the first sub-coil (SC1a) and the second sub-coil (SC2a) may be located in the first groove (g1) located on the first side (1232a) of the main barrel (1232).

More specifically, the first side portion 1232a according to the embodiment may include a first groove g1 and a first reinforcing member RB1.

The first coil 1251a may be disposed in the first groove g1. In an embodiment, the first groove g1 may include a first sub-groove g11 and a second sub-groove g12. The first sub-groove g11 and the second sub-groove g12 may be sequentially arranged along the optical axis direction. The first sub-coil (SC1a) may be located in the first sub-groove (g11). The second sub-coil (SC2a) may be located in the second sub-groove (g12).

The first reinforcing member RB1 may at least partially overlap the first coil 1251a in the optical axis direction. Additionally, the first reinforcing member RB1 may be located between the first sub-coil SC1a and the second sub-coil SC2a. For example, the first reinforcing member RB1 may overlap the first sub-coil SC1a and the second sub-coil SC2a along the optical axis direction (Z-axis direction). In other words, the housing 1230 disposed between the first sub-groove g11 and the second sub-groove g12 may overlap the first coil 1251 in the optical axis direction. For example, the housing 1230 disposed between the first sub-groove g11 and the second sub-groove g12 may overlap the first sub-coil SC1a in the optical axis direction. Additionally, the housing 1230 disposed between the first sub-groove g11 and the second sub-groove g12 may overlap the second sub-coil SC2a in the optical axis direction.

Additionally, the first reinforcing member RB1 may be located in an area between the first sub-groove g11 and the second sub-groove g12. For example, the first reinforcing member RB1 may at least partially overlap the first sub-groove g11 and the second sub-groove g12 in the optical axis direction. Additionally, the first reinforcing member RB1 may be a rib or reinforcement of the first groove (or the first sub-groove (g11) and the second sub-groove (g12). With this configuration, the reliability (eg, rigidity) of the main barrel 1232 due to the first groove g1 can be improved. Furthermore, distortion or deterioration of straightness of the first groove g1 can be prevented.

Furthermore, by the first reinforcing member RB1, the first sub-coil SC1a and the second sub-coil SC2a can be spaced apart from each other along the optical axis direction. For example, the gap between the first subcoil SC1a and the second subcoil SC2a may be smaller than the width of each subcoil (eg, the first subcoil SC1a and the second subcoil SC2a). For example, the gap between the first sub-coil (SC1a) and the second sub-coil (SC2a) may be less than 0.5 times the width of each sub-coil (e.g., the first sub-coil (SC1a) and the second sub-coil (SC2a)). . For example, the width of the first reinforcing member RB1 may be smaller than the width of each subcoil (eg, the first subcoil SC1a and the second subcoil SC2a). For example, the width of the first reinforcing member RB1 in the optical axis direction is 0.5 times or less than the width of each subcoil (e.g., the first subcoil (SC1a) and the second subcoil (SC2a)) in the optical axis direction. You can. With this configuration, the second camera actuator according to the embodiment can be easily miniaturized, have improved rigidity, and at the same time maintain electromagnetic force.

The second coil 1251b may include a third sub-coil (SC1b) and a fourth sub-coil (SC2b) sequentially arranged in the optical axis direction. The third sub-coil (SC1b) and the fourth sub-coil (SC2b) may be disposed on the main barrel 1232. In an embodiment, the third sub-coil (SC1b) and the fourth sub-coil (SC2b) may be located on the second side (1232b) of the main barrel (1232). For example, the third sub-coil (SC1b) and the fourth sub-coil (SC2b) may be located in the second groove (g2) located on the second side (1232b) of the main barrel (1232).

More specifically, the second side portion 1232b according to the embodiment may include a second groove g2 and a second reinforcing member RB2.

The second coil 1251b may be disposed in the second groove g2. In an embodiment, the second groove g2 may include a third sub-groove g21 and a fourth sub-groove g22. The third sub-groove g21 and the fourth sub-groove g22 may be sequentially arranged along the optical axis direction. The third sub coil SC1b may be located in the third sub groove g21. The fourth sub-coil (SC2b) may be located in the fourth sub-groove (g22).

The second reinforcing member RB2 may at least partially overlap the second coil 1251b in the optical axis direction. Additionally, the second reinforcing member RB2 may be located between the third sub-coil SC1b and the fourth sub-coil SC2b. For example, the second reinforcing member RB2 may overlap the third sub-coil SC1b and the fourth sub-coil SC2b along the optical axis direction (Z-axis direction).

Additionally, the second reinforcing member RB2 may be located in an area between the third sub-groove g21 and the fourth sub-groove g22. For example, the second reinforcing member RB2 may at least partially overlap the third sub-groove g21 and the fourth sub-groove g22 in the optical axis direction. Additionally, the second reinforcing member RB2 may be a rib or reinforcement of the second groove (or the third sub-groove (g21) and the fourth sub-groove (g22)). With this configuration, the reliability (eg, rigidity) of the main barrel 1232 due to the second groove g2 can be improved. Furthermore, it is possible to prevent distortion or a decrease in straightness of the second groove g2.

Furthermore, by the second reinforcing member RB2, the third sub-coil (SC1b) and the fourth sub-coil (SC2b) can be spaced apart from each other along the optical axis direction. For example, the gap between the third subcoil SC1b and the fourth subcoil SC2b may be smaller than the width of each subcoil (eg, the third subcoil SC1b and the fourth subcoil SC2b). For example, the gap between the third sub-coil (SC1b) and the fourth sub-coil (SC2b) may be less than 0.5 times the width of each sub-coil (e.g., the third sub-coil (SC1b) and the fourth sub-coil (SC2b)). . With this configuration, the second camera actuator according to the embodiment can be easily miniaturized, have improved rigidity, and at the same time maintain electromagnetic force.

Additionally, the length L4 in the optical axis direction (Z-axis direction) of the second coil 1251b may be greater than the length L2 in the optical axis direction of the first coil 1251a. That is, the lengths of the first coil 1251a and the second coil 1251b that are opposite or facing each other may be different. Additionally, the first coil 1251a and the second coil 1251b may be positioned asymmetrically with respect to the optical axis. That is, corresponding to the difference between the lengths of the first coil 1251a and the second coil 1251b, there may be a difference in the maximum movement distance between the first lens assembly and the second lens assembly. Accordingly, lens assemblies or moving assemblies with different strokes can be easily designed.

In addition, the first coil 1251a and the second coil 1251b may be offset in at least some areas in the direction perpendicular to the optical axis (second direction (Y-axis direction). In other words, the first coil 1251a and the second coil 1251a The coils 1251b may not partially overlap in the second direction.

Additionally, the length of the coil may correspond to the length of the groove. For example, the length of the first coil 1251a may correspond to the length of the first groove g1. Additionally, the length of the second coil 1251b may correspond to the length of the second groove g2. Accordingly, the length L2 of the first groove g1 may be smaller than the length L4 of the second groove g2.

In addition, the length L1 in the optical axis direction of the first subcoil (SC1a) or the second subcoil (SC2a) is longer than the length L3 in the optical axis direction of the third subcoil (SC1b) or the fourth subcoil (SC2b). It can be small. Or, the length L3 in the optical axis direction of the third subcoil (SC1b) or the fourth subcoil (SC2b) is greater than the length L1 in the optical axis direction of the first subcoil (SC1a) or the second subcoil (SC2a). You can.

Correspondingly, the length of the first sub-groove (g11) or the second sub-groove (g12) in the optical axis direction corresponds to the length L1 in the optical axis direction of the first sub-coil (SC1a) or the second sub-coil (SC2a). You can. In addition, the length of the third sub-groove (g2a) or the fourth sub-groove (g22) in the optical axis direction may correspond to the length (L3) of the third sub-coil (SC1b) or the fourth sub-coil (SC2b) in the optical axis direction.

Therefore, the length L1 of the first sub-groove (g11) or the second sub-groove (g12) in the optical axis direction is smaller than the length L3 of the third sub-groove (g2a) or the fourth sub-groove (g22) in the optical axis direction. You can.

In addition, more precisely, the length L2 in the optical axis direction of the first coil 1251a is the length of the entire hanger and the first reinforcing member RB1 in the optical axis direction of the first sub-coil (SC1a) and the second sub-coil (SC2a). It may be the sum of the lengths in the optical axis direction.

Likewise, the length L4 in the optical axis direction of the second coil 1251b extends in the optical axis direction of the third sub-coil (SC1b) and the fourth sub-coil (SC2b), and in the optical axis direction of the entire hanger and the second reinforcing member (RB2). It can be the sum of lengths.

Additionally, correspondingly, the length L1 of the first sub-groove (g11) or the second sub-groove (g12) in the optical axis direction is the length of the third sub-groove (g21) or the fourth sub-groove (g22) in the optical axis direction. It may be smaller than (L3). In other words, the length L3 of the third sub-groove (g21) or the fourth sub-groove (g22) in the optical axis direction is the length L1 of the first sub-groove (g11) or the second sub-groove (g12) in the optical axis direction. It can be bigger than

Additionally, the first sub-groove (g11) or the second sub-groove (g12) may be asymmetric with the third sub-groove (g21) or the fourth sub-groove (g22) with respect to the optical axis direction. Accordingly, the first sub-groove (g11) or the second sub-groove (g12) does not overlap at least partially with the third sub-groove (g21) or the fourth sub-groove (g22) in the direction perpendicular to the optical axis (second direction). You can. In other words, the first sub-groove g11 or the second sub-groove g12 may be offset from the third sub-groove g21 or the fourth sub-groove g22 in the second direction at least in some areas.

Additionally, the first groove g1 and the second groove g2 may have different areas. For example, the area of the first groove g1 may be smaller than the area of the second groove g2. Furthermore, the areas of the first sub-groove (g11) and the second sub-groove (g12) may be smaller than the areas of the third sub-groove (g21) and the fourth sub-groove (g22).

Additionally, the first groove g1 or the second groove g2 may be connected to a hole (or groove, 1231ah) formed on the side of the second housing 1232. That is, the first groove g1 may be at least partially connected to the additional hole 1231ah. With this configuration, the coupling between the sub-coil and the groove can be easily managed through the additional hole 1231ah. That is, it can be easily seated in the first groove (g1) or the second groove (g2) of the first or second coil.

Furthermore, the side of the second housing 1232 may further include an additional protrusion 1232p extending outward. The additional protrusion 1232p may be roughly aligned with the first groove g1 and the second groove g2 in the second direction. Furthermore, the additional protrusion 1232p may be formed at an angle of the second housing 1232. It may be disposed at the edge from the side. Furthermore, the additional protrusion 1232p may overlap at least partially in the optical axis direction with the substrate portion 1270. The additional protrusion 1232p is disposed outside the substrate portion 1270 to form a substrate. 1270 can be prevented from being removed from the second housing 1232. In other words, the coupling force between the substrate portion 1270 and the second housing 1232 can be improved.

Furthermore, the side or outer surface of the second housing 1232 may have various fillet or chamfer shapes.

Additionally, the first reinforcing member RB1 and the second reinforcing member RB2 may be arranged to be offset in a direction perpendicular to the optical axis direction. The first reinforcing member RB1 and the second reinforcing member RB2 may partially overlap in the second direction (Y-axis direction) according to the length of the camera actuator. However, the first reinforcing member RB1 and the second reinforcing member RB2 may be shifted in the second direction at least in some areas. In other words, the first reinforcing member RB1 and the second reinforcing member RB2 may not overlap in the second direction at least in some areas. Accordingly, in the second camera actuator according to the embodiment, the reinforcing member may be disposed corresponding to the size of the driving unit. Accordingly, the reliability of the housing is improved and the rigidity can be improved in a balanced manner without bending in one area.

Additionally, as an example of use, the first reinforcing member RB1 and the second reinforcing member RB2 may not overlap in a direction perpendicular to the optical axis direction.

According to the embodiment, the first reinforcing member RB1 may be located in the center of the first groove g1. For example, the first reinforcing member RB1 may be positioned to correspond to the bisector line in the optical axis direction of the first groove g1.

Additionally, the second reinforcing member RB2 may be located at the center of the second groove g2. For example, the second reinforcing member RB2 may be positioned to correspond to the bisector line in the optical axis direction of the second groove g2.

Additionally, the first reinforcing member RB1 and the second reinforcing member RB2 may have upper surfaces flush with the outer surfaces of the first side 1232a and the second side 1232b. For example, the upper surface of the first reinforcing member RB1 may form the same surface as the outer surface of the second housing 1232. Additionally, the upper surface of the first reinforcing member RB1 may correspond to the top surface or top of the first groove g1. Additionally, the upper surface of the second reinforcing member Rb2 may form the same surface as the outer surface of the second housing 1232. The upper surface of the second reinforcing member Rb2 may correspond to the top surface or top of the second groove g2.

In an embodiment, the maximum length of the reinforcing member may correspond to the maximum depth of the groove. The maximum length of the reinforcing member may be equal to or less than the maximum depth of the groove. For example, the maximum length (or length in the second direction) of the first reinforcing member RB1 may be equal to or less than the maximum depth (or length in the second direction) of the first groove g1. Additionally, the maximum length (or length in the second direction) of the second reinforcing member Rb2 may be equal to or less than the maximum depth (or length in the second direction) of the second groove g2.

When the maximum length of the reinforcing member is equal to the maximum depth of the groove, the substrate portion 1270 can contact not only the second housing but also the reinforcing member.

Furthermore, when the maximum length of the reinforcing member is less than or equal to the maximum depth of the groove, the substrate portion 1270 can be easily seated on the side of the second housing.

By this configuration, the reliability of the substrate portion 1270 disposed on the side of the groove and the second housing in the embodiment can be improved.

Referring further to FIGS. 18 to 21, the housing according to the embodiment may include a hole disposed on the side to improve electromagnetic force generation efficiency between the coil and the magnet.

In an embodiment, the first side 1232a may include a first hole h1. And the second side 1232b may include a second hole h2.

The first hole h1 and the second hole h2 may be located inside the first groove g1 and the second groove g2. And the first hole h1 and the second hole h2 may partially overlap in the second direction. Additionally, corresponding to the first groove (g!) and the second groove (g2), the first hole (h1) and the second hole (h2) may also be shifted in at least some areas in the second direction. That is, the first hole h1 and the second hole h2 may not overlap at least partially in the second direction.

In other words, the first hole h1 and the second hole h2 may also have different lengths in the second direction. For example, the length of the second hole (h2) may be greater than the length of the first hole (h1).

In addition, the first hole h1 and the second hole h2 may be divided into areas by the first reinforcing member RB1 and the second reinforcing member RB2, respectively.

In an embodiment, the first hole h1 may include a first sub-hole h11 and a second sub-hole h12. The second hole (h2) may include a third sub-hole (h21) and a fourth sub-hole (h22).

The first sub-hole (h11) may be located inside the first sub-groove (g11). The first sub-hole (h11) may be smaller in size than the second sub-groove (g1).

Additionally, the second sub-hole (h12) may be located inside the second sub-groove (g12). The second sub-hole (h12) may be smaller in size than the second sub-groove (g12).

With this configuration, the first coil 1251a can face the first magnet and the first hole h1. That is, the first magnet and the first coil 1251a can generate electromagnetic force without interference through the first hole h1.

Additionally, the second coil 1251b may face the second magnet through the second hole h2. Likewise, the second magnet and the second coil 1251b can generate electromagnetic force without interference through the second hole h2.

Furthermore, the length of the first sub-hole h11 or the second sub-hole h12 in the optical axis direction may be different from the length of the third sub-hole h21 or the fourth sub-hole h22 in the optical axis direction. For example, the first sub-hole h11 or the second sub-hole h12 may be asymmetric with the third sub-hole h21 or the fourth sub-hole h22 with respect to the optical axis.

Additionally, according to the embodiment, the first reinforcing member RB1 may include a first member groove RB1g disposed at an end. For example, the first reinforcing member RB1 may include first member grooves RB1g disposed on both sides in the first direction. Accordingly, the length L5 of the first member groove RB1g in the second direction from the center along the first direction (X-axis direction) may be greater than the length L6 in the second direction from the end. That is, the thickness of the first member groove RB1g may vary along the first direction (X-axis direction). And the first member groove RB1g may have the greatest thickness at the center along the first direction (X-axis direction). With this configuration, the supporting force between the first sub-coil or the second sub-coil is maintained, and space for electrical connection between the first sub-coil and the second sub-coil can be easily secured.

The second reinforcing member RB2 may include a second member groove RB2g disposed at an end. For example, the second reinforcing member RB2 may include second member grooves RB2g disposed on both sides in the second direction. Accordingly, the length L7 of the second member groove RB2g from the center along the second direction (X-axis direction) may be greater than the length L8 from the end in the second direction. That is, the thickness of the second member groove RB2g may vary along the second direction (X-axis direction). And the second member groove RB2g may have the greatest thickness at the center along the second direction (X-axis direction). By this configuration, the supporting force between the third sub-coil or the fourth sub-coil is maintained, and space for electrical connection between the third sub-coil and the fourth sub-coil can be easily secured.

Additionally, in the second camera actuator according to the embodiment, the 1-1 stopper (ST1a) and the 2-1 stopper (ST2a) may be located adjacent to the first side portion (1232a). And the 1-2 stopper (ST1b) may be located adjacent to the second side portion (1232b).

FIG. 22 is a view with a coil and a stopper added to FIG. 16, FIG. 23 is a view with a coil and a stopper added to FIG. 17, and FIG. 24 is a top view of the coil and stopper of the second camera actuator according to the embodiment.

22 to 24, in the second camera actuator according to the embodiment, the 1-1 stopper (ST1a) and the 1-2 stopper (ST1b) may overlap at least partially in the second direction (Y-axis direction). there is.

However, the 2-1 stopper (ST2a) and the 2-2 stopper (ST2b) may be at least partially shifted in the second direction (Y-axis direction). For example, the 2-1 stopper (ST2a) and the 2-2 stopper (ST2b) may not overlap in the second direction (Y-axis direction). Due to this configuration, the maximum movement distance of the first lens assembly and the second lens assembly may be different as described above.

Additionally, the 1-1 stopper (ST1a) and the 1-2 stopper (ST1b) may overlap the first sub-coil (SC1a) and the third sub-coil (SC1b) in the second direction (Y-axis direction). In addition, the 1-1 stopper (ST1a) and the 1-2 stopper (ST1b) are connected to the holes (coil holes) of the first sub-coil (SC1a) and the third sub-coil (SC1b) and in the second direction (Y-axis direction). There may be at least some overlap. With this configuration, electromagnetic force can be applied to the first lens assembly and the second lens assembly with maximum efficiency. In other words, the efficiency of the driving force can be improved.

FIG. 25 is a side view of a coil of a second camera actuator according to an embodiment, FIG. 26 is another side view of a coil of a second camera actuator according to an embodiment, and FIG. 27 is a view of a coil of a second camera actuator according to an embodiment. This is a top view.

Referring to FIGS. 25 to 27 , the length L9 in the optical axis direction of the first magnet 1252a may be smaller than the length L10 in the optical axis direction of the second magnet 1252b.

Additionally, the length L9 of the first magnet 1252a in the optical axis direction may be greater than the length of the first coil 1251a in the optical axis direction. Additionally, the length L10 of the second magnet 1252a in the optical axis direction may be greater than the length of the second coil 1251a in the optical axis direction.

In an embodiment, the length L9 of the first magnet 1252a, the length L10 of the second magnet 1252a, the length of the first coil 1251a, and the length of the second coil 1251b may be sequentially increased. there is.

In addition, the length L9 in the optical axis direction of the first magnet 1252a may be greater than the length in the optical axis direction of the first sub-groove or the second sub-groove. Similarly, the length L10 in the optical axis direction of the second magnet 1252b may be greater than the length of the third or fourth subgroove in the optical axis direction. Accordingly, the second camera actuator according to the embodiment can provide improved driving efficiency by suppressing the generation of back electromotive force.

Furthermore, the third sub-coil (SC1b) may overlap the area between the first sub-coil (SC1a) and the second sub-coil (SC2a) in the second direction. That is, the third sub-coil SC1b may overlap the first reinforcing member in the second direction. Additionally, the 2-2 stopper (ST2b) may be aligned with the second sub-coil (SC2a) in the optical axis direction or in the third direction (Z-axis direction) and may be positioned offset from the second sub-coil (SC2a) in the second direction. . For example, the 2-2 stopper (ST2b) may be located at the rear end of the second sub-coil (SC2a). And the 2-2 stopper (ST2b) may overlap the fourth sub-coil (SC2b) in the second direction.

Furthermore, the 2-1 stopper (ST2a) may overlap the fourth sub-coil (SC2b) in the second direction. And the 2-1 stopper (ST2a) may overlap the hole of the fourth sub-coil (SC2b) in the second direction.

Figure 28 is a graph explaining the work effect of the second camera actuator according to the embodiment.

In Figure 28, (a) is a graph showing the displacement magnitude (Displacement Mag, WCS, y-axis) with respect to the curve arc length (x-axis) of the second camera actuator according to the embodiment, and (b) is a graph showing the reinforcement When a member is removed, the magnitude of the displacement is plotted against the curve length.

As shown, according to the embodiment, the displacement size can be up to 14um (a), and when the reinforcing member is removed, the displacement size can be up to 50um (b). In this way, the camera actuator according to the embodiment can improve the straightness of the groove or hole of the housing and provide improved rigidity.

Additionally, (c) in FIG. 28 shows electromagnetic force (Lorentz force, y-axis) according to the coil spacing (x-axis). Referring to FIG. 28(c), when the spacing between adjacent sub-coils increases beyond 1.45 mm, the magnitude of electromagnetic force can be greatly reduced. Accordingly, the ratio between the spacing between subcoils and the length of the subcoils in the optical axis direction may be 1:10 to 1:20. By this ratio, the reliability of the housing can be improved by improving rigidity while maintaining electromagnetic force.

Figure 29 is a schematic diagram showing a circuit board according to an embodiment.

Referring to FIG. 29 , as described above, the circuit board 1300 according to the embodiment may include a first circuit board portion 1310 and a second circuit board portion 1320. The first circuit board portion 1310 is located below the base and can be coupled to the base. Additionally, an image sensor (IS) may be disposed on the first circuit board portion 1310. Additionally, the first circuit board unit 1310 and the image sensor IS may be electrically connected. That is, the base is located at the rear of the second camera actuator, and the image sensor and circuit board (first circuit board portion) may be located at the rear of the base. The base may include a filter (e.g., infrared, etc.). The circuit board 1300 may include the image sensor and sensor base described above.

Additionally, the second circuit board portion 1320 may be located on the side of the base. In particular, the second circuit board portion 1320 may be located on the first side of the base. Accordingly, the second circuit board portion 1320 is located adjacent to the first coil located adjacent to the first side, so that electrical connection can be easily made. Additionally, the second circuit board portion 1320 may be located on the second side. As such, there may be a plurality of second circuit board units 1320. However, it is not limited to this and may be placed only on either the first side or the second side.

Furthermore, the circuit board 1300 may additionally include a fixing board (not shown) located on the side. Accordingly, even if the circuit board 1300 is made of a flexible material, it can be coupled to the base while maintaining rigidity by using a fixed board.

The second circuit board portion 1320 of the circuit board 1300 may be located on the side of the driver 1250. The circuit board 1300 may be electrically connected to the first driving unit and the driving unit. For example, electrical connections can be made with SMT. However, it is not limited to this method.

This circuit board 1300 may include a circuit board with a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), or a rigid flexible PCB. You can. However, it is not limited to these types.

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

Figure 30 is a perspective view of a mobile terminal to which a camera module is applied according to an embodiment.

As shown in FIG. 30, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided at the rear.

The camera module 1000 may include an image capture function and an autofocus function. For example, the camera module 1000 may include an autofocus function using an image.

The camera module 1000 processes image frames of still or moving images obtained by an image sensor in shooting mode or video call mode.

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

For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and OIS along with AF or zoom functions may be implemented by the first camera module 1000A. You can.

The flash module 1530 may include a light emitting element inside that emits light. The flash module 1530 can be operated by operating a camera of a mobile terminal or by user control.

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

The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 can be mainly used in conditions where the autofocus function using the image of the camera module 1000 is degraded, for example, in close proximity of 10 m or less or in dark environments.

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 photo diode that converts light energy into electrical energy.

Figure 31 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

For example, Figure 31 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera module 1000 according to an embodiment is applied.

Referring to FIG. 31, the vehicle 700 of the embodiment may be provided with wheels 13FL and 13FR rotated by a power source and a predetermined sensor. The sensor may be a camera sensor (2000), but is not limited thereto.

The camera sensor 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 of the embodiment may acquire image information through a camera sensor 2000 that captures a front image or a surrounding image, determines the lane identification 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 acquire a front image by photographing the front of the vehicle 700, and a processor (not shown) may acquire image information by analyzing objects included in the front image.

For example, if the image captured by the camera sensor 2000 includes objects such as lanes, adjacent vehicles, obstacles, and indirect road markings such as median strips, curbs, and street trees, the processor detects these objects. This can be included in the video information. At this time, the processor can further supplement the image information by obtaining distance information to the object detected through the camera sensor 2000.

Image information may be information about an object captured in an image. This camera sensor 2000 may include an image sensor and an image processing module.

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

The image processing module can process still images or moving images obtained through an image sensor, extract necessary information, and transmit the extracted information to the processor.

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

Although the above description focuses on the examples, this is only an example and does not limit the present invention, and those skilled in the art will be able to You will see that various variations and applications are possible. For example, each component specifically shown in the examples can be modified and implemented. And these variations and differences in application should be construed as being included in the scope of the present invention as defined in the appended claims.

Claims (23)

a housing including a first side;
a first lens assembly moving in the optical axis direction within the housing; and
It includes a first driving unit that moves the first lens assembly,
The first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet,
The first coil is disposed on the first side of the housing and includes a first subcoil and a second subcoil sequentially arranged in the optical axis direction, and the housing includes the first subcoil and the second subcoil. A camera actuator including a first reinforcing member disposed therebetween. According to paragraph 1,
The first reinforcing member is a camera actuator that at least partially overlaps the first coil in the optical axis direction. According to paragraph 1,
A camera actuator including a first member groove disposed at an end of the first reinforcing member. According to paragraph 1,
a second lens assembly moving in the optical axis direction within the housing;
It includes a second driving unit that moves the second lens assembly,
The housing includes a second side facing the first side,
The second driving unit is a camera actuator including a second magnet disposed on the second lens assembly and a second coil facing the second magnet. According to paragraph 1,
A camera actuator wherein the length of the first magnet in the optical axis direction is greater than the length of the hole in the first subcoil in the optical axis direction. According to clause 5,
A camera actuator wherein the length of the first coil in the optical axis direction is the sum of the lengths of the first subcoil and the second subcoil in the optical axis direction and the length of the first reinforcing member in the optical axis direction. According to paragraph 1,
The first groove includes a first sub-groove in which the first sub-coil is disposed and a second sub-groove in which the second sub-coil is disposed. In clause 7,
A camera actuator wherein the length of the first magnet in the optical axis direction is greater than the length of the first subgroove or the second subgroove in the optical axis direction. According to paragraph 4,
The second coil is disposed on the second side of the housing, and includes a third sub-coil and a fourth sub-coil sequentially arranged in the optical axis direction. According to clause 9,
A camera actuator wherein the length of the second coil in the optical axis direction is greater than the length of the first coil in the optical axis direction. According to clause 9,
The first coil and the second coil are arranged to be offset in a direction perpendicular to the optical axis direction. According to clause 9,
A camera actuator wherein the length of the first subcoil or the second subcoil in the optical axis direction is smaller than the length of the third subcoil or the fourth subcoil in the optical axis direction. According to clause 9,
The housing includes a second groove in which the second coil is disposed, and a second reinforcing member disposed between the third sub-coil and the fourth sub-coil. According to clause 13,
A camera actuator wherein the first reinforcing member and the second reinforcing member are arranged to be offset in a direction perpendicular to the optical axis direction. According to clause 13,
A camera actuator wherein the length of the second groove in the optical axis direction is greater than the length of the first groove in the optical axis direction. According to clause 13,
The second groove includes a third sub-groove where the third sub-coil is placed and a fourth sub-groove where the fourth sub-coil is placed. According to clause 16,
A camera actuator wherein the length of the third subgroove or the fourth subgroove in the optical axis direction is greater than the length of the first subgroove or the second subgroove in the optical axis direction. According to clause 13,
The first reinforcing member is located in the center of the first groove,
The second reinforcing member is a camera actuator located at the center of the second groove. According to paragraph 4,
a 1-1 stopper and a 2-1 stopper disposed apart from each other along the optical axis direction and adjacent to the first side; and
It includes a 1-2 stopper and a 2-2 stopper disposed spaced apart along the optical axis direction and adjacent to the second side,
The 1-1 stopper and the 1-2 stopper overlap in a direction perpendicular to the optical axis direction,
The 2-1 stopper and the 2-2 stopper are arranged to be offset in a direction perpendicular to the optical axis direction. A housing formed on a first side and including a first hole and a second hole spaced apart from each other;
a first lens assembly moving in the optical axis direction within the housing; and
It includes a first driving unit that moves the first lens assembly,
The first driving unit includes a first magnet disposed on the first lens assembly and a first coil facing the first magnet,
The first coil is disposed on the first side of the housing and includes a first sub-coil and a second sub-coil sequentially arranged in the optical axis direction,
The first sub-coil is disposed in the first hole, and the second sub-coil is disposed in the second hole. According to clause 20,
The housing includes a first portion disposed between the first hole and the second hole,
The first part is a camera actuator that overlaps the first coil in the optical axis direction. A housing including first and second sides facing each other;
a first lens assembly and a second lens assembly moving in the optical axis direction within the housing;
a first driving unit that moves the first lens assembly; and
It includes a second driving unit that moves the second lens assembly,
The first driving unit includes a first magnet disposed in the first lens assembly, and a first sub-coil and a second sub-coil disposed on the first side facing the first magnet,
The second driving unit includes a second magnet disposed in the second lens assembly, and a third sub-coil and a fourth sub-coil disposed on the second side and facing the second magnet,
The housing includes a first reinforcing member disposed between the first subcoil and the second subcoil, and a second reinforcing member disposed between the third subcoil and the fourth subcoil. According to clause 22,
A camera actuator wherein the first reinforcing member and the second reinforcing member do not overlap in a direction perpendicular to the optical axis direction.

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