Camera actuator including a dummy member and camera module including same

Disclosed in an embodiment of the present invention is a camera actuator including a housing, a mover disposed in the housing and including an optical member, a tilting guide unit disposed between the housing and the mover, a driving unit which is disposed in the housing and drives the mover, and an elastic member disposed between the tilting guide unit and the housing, wherein the driving unit includes a first magnet disposed on a first side surface of the mover and a dummy member disposed on a second side surface of the mover facing the first side surface.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is the U.S. national stage application of International Patent Application No. PCT/KR2021/004861, filed Apr. 19, 2021, which claims the benefit under 35 U.S.C. § 119 of Korean Application Nos. 10-2020-0047485, filed Apr. 20, 2020; and 10-2020-0091615, filed Jul. 23, 2020; the disclosures of each of which are incorporated herein by reference in their entirety.

TECHNICAL FIELD

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

BACKGROUND ART

Cameras are apparatuses which capture images or moving images of subjects and are mounted on electronic devices such as portable devices, drones, vehicles, and the like. In order to improve the quality of an image, a camera module may have an image stabilization (IS) function that corrects or inhibits image shake caused by the movement of a user, an auto focusing (AF) function that automatically adjusts a distance between an image sensor and a lens so as to arrange a focal length of the lens, and a zooming function that increases or decreases a magnification using a zoom lens to capture an image of a subject at a long distance.

Meanwhile, when the number of pixels of the image sensor increases, the resolution increases and a size of a pixel decreases. As the size of the pixel decreases, an amount of received light for the same time decreases. Accordingly, as the number of pixels of a camera increases, an image shake phenomenon caused by hand shake occurring due to a decrease in shutter speed in a dark environment may more severely occur. An optical image stabilization (OIS) technique for changing an optical path to correct movement is a typical image stabilization technique.

According to the general OIS technique, the movement of a camera can be detected by a gyro sensor or the like, and then a lens or a camera module including a lens and an image sensor can be tilted or moved based on the detected movement. When the lens or the camera module including the lens and the image sensor is tilted or moved for OIS, a space for tilting or moving needs to be additionally secured around the lens or the camera module.

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

However, due to recent needs for ultra-slim and ultra-small camera modules, there have been many spatial restrictions on the arrangement of the actuator for OIS, and it may be difficult to secure a sufficient space for a lens or a camera module including a lens and an image sensor to tilt or move for the OIS. In addition, as the number of pixels of a camera increases, it is preferable that a size of the lens be increased in order to increase an amount of received light, but there may be a limit on increasing the size of the lens due to a space occupied by the actuator for the OIS.

In addition, when a camera module has all of a zooming function, an AF function, and an OIS function, there is also a problem that a magnet for OIS and a magnet for AF or zoom are disposed adjacent to each other so as to cause a magnetic field interference.

Technical Problem

The present invention is directed to providing a camera actuator capable of being applied to ultra-slim, ultra-small, and high-resolution cameras.

The present invention is also directed to providing a camera actuator which stably holds a tilting guide unit.

Technical Solution

One aspect of the present invention provides a camera actuator including a housing, a mover disposed in the housing and including an optical member, a tilting guide unit disposed between the housing and the mover, a driving unit which is disposed in the housing and drives the mover, and an elastic member disposed between the tilting guide unit and the housing, wherein the driving unit includes a first magnet disposed on a first side surface of the mover and a dummy member disposed on a second side surface of the mover facing the first side surface.

The driving unit may further include a second magnet disposed on a lower portion of the mover, a first coil facing the first magnet, and a second coil facing the second magnet.

The camera actuator may further include a substrate part that is electrically connected to the driving unit and includes a first substrate side portion, a second substrate side portion opposite to the first substrate side portion, and a third substrate side portion disposed between the first substrate side portion and the second substrate side portion, and a driver disposed on any one of the first substrate side portion and the third substrate side portion, wherein the first substrate side portion may be electrically connected to the first coil, and the third substrate side portion may be electrically connected to the second coil.

The second substrate side portion may be a dummy substrate.

The driver may supply a current to the first coil and the second coil.

The elastic member may bring the tilting guide unit into close contact with the mover.

The camera actuator may further include a first member connected to the housing and a second member coupled to the mover, wherein the second member may be disposed between the first member and the mover, the elastic member may include a first bonding part connected to the housing, a second bonding part connected to the first member, and connecting parts connecting the first bonding part and the second bonding part.

The second bonding part may be disposed between the mover and the first bonding part.

The tilting guide unit may include a base, a first protruding portion protruding from a first surface of the base, and a second protruding portion protruding from a second surface of the base, and the mover may tilt with respect to a first axis about the first protruding portion and tilt with respect to a second axis about the second protruding portion.

The connecting parts may include a first connecting part to a fourth connecting part which are respectively disposed in first to fourth quadrant regions that are divided by a first bisector and a second bisector, the first to fourth quadrant regions may be positioned counter-clockwise, the first connecting part and the third connecting part may be symmetrical with respect to the first bisector and the second bisector, the second connecting part and the fourth connecting part may be symmetrical with respect to the first bisector and the second bisector, the first bisector may be a line which bisects the elastic member in a first direction, and the second bisector may be a line which bisects the elastic member in a second direction.

Another aspect of the present invention provides an electronic device including a first camera module in which an opening, into which light is incident, and an image sensor overlap at least partially in an optical axis direction and a second camera module including an optical member which changes an optical path of incident light, wherein the second camera module includes a first side surface adjacent to the first camera module, a second side surface opposite to the first side surface, a driving unit which is disposed between the optical member and the second side surface and moves the optical member, and a dummy member between the optical member and the first side surface.

Still another aspect of the present invention provides a camera actuator including a housing, mover disposed in the housing, a tilting guide unit disposed between the housing and the mover, a driving unit which is disposed in the housing and drives the mover, and an elastic member disposed between the tilting guide unit and the housing, wherein the elastic member brings the tilting guide unit into close contact with the mover.

The mover may include a seating groove accommodating the tilting guide unit and may further include a first member and a second member which are accommodated in the seating groove.

The first member may cover a part of the seating groove, and the second member may be disposed between the tilting guide unit and the first member.

The elastic member may include a first bonding part connected to the housing, a second bonding part connected to the first member, and connecting parts connecting the first bonding part and the second bonding part.

The second bonding part may be disposed between the mover and the first bonding part.

The connecting parts may extend from the first member toward the second member.

The first bonding part may include a first flat region and a plurality of first bonding holes positioned in the first flat region.

An inner side surface of the first flat region may be positioned further inward than a contact area in which the first member and the first flat region are in contact with each other.

The tilting guide unit may include a base, a first protruding portion protruding from a first surface of the base, and a second protruding portion protruding from a second surface of the base.

The mover may tilt with respect to a first axis about the first protruding portion and tilt with respect to the second axis about the second protruding portion.

The second bonding part may overlap the first protruding portion along the second axis.

The second bonding part may include a second flat region and a plurality of second bonding holes spaced apart from each other along the second axis and positioned in the second flat region.

In the base, a top point of the first protruding portion may be disposed on an intermediate axis between the plurality of second bonding holes.

The mover may include a first protrusion groove accommodating the first protruding portion, and the second member may include a second protrusion groove accommodating the second protruding portion.

Each of the first member, the second member, the tilting guide unit may at least partially overlap the mover along the second axis, the tilting guide unit may overlap the first member and the second member along a third axis, and the third axis may be perpendicular to the first axis and the second axis.

Yet another aspect of the present invention provides a camera actuator including a fixed member, a mover including a reflection member, a tilting guide unit which guides the mover to tilt, a driving unit which drives the mover, and an elastic member which pulls the mover toward the fixed member, wherein the elastic member brings the tilting guide unit into close contact with the fixed member and the mover

The tilting guide unit may be disposed between the fixed member and the mover.

The mover may include a seating groove accommodating the tilting guide unit and may further include a first member and a second member accommodated in the seating groove, and the fixed member may be any one of the housing and the second member.

Yet another aspect of the present invention provides a camera actuator including a fixed member, a mover including a reflection member, a tilting guide unit which guides the mover to tilt, and an elastic member including a first bonding part coupled to the fixed member and a second bonding part coupled to the mover, wherein the second bonding part of the elastic member is not disposed on a virtual plane on which the first bonding part of the elastic member and one surface of the fixed member are in contact with each other.

The second bonding part may be closer to the reflection member than the first bonding part.

Advantageous Effects

According to embodiments of the present invention, a camera actuator capable of being applied to ultra-slim, ultra-small, and high-resolution cameras can be provided. Particularly, an actuator for optical image stabilization (OIS) can be effectively disposed without increasing a total size of a camera module.

According to embodiments of the present invention, magnetic field interference between tilting with respect to an X-axis direction and tilting with respect to a Y-axis direction does not occur, the tilting with respect to the X-axis direction and the tilting with respect to the Y-axis direction can be implemented through a stable structure, magnetic field interference between an actuator for OIS and an actuator for auto focusing (AF) or zooming does not occur, and thus a precise OIS function can be implemented.

According to embodiments of the present invention, since a size limit of a lens is solved, a sufficient light amount can be secured, and thus OIS with low power consumption can be implemented.

According to the embodiments of the present invention, driving stability of the camera actuator can be improved.

MODES OF THE INVENTION

Since the present invention allows various changes and has many embodiments, specific embodiments will be illustrated in the accompanying drawings and described. However, this is not intended to limit the present invention to the specific embodiments, and it is to be appreciated that all changes, equivalents, and substitutes that fall within the spirit and technical scope of the present invention are encompassed in the present invention.

Although the terms “second,” “first,” and the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a second element could be termed a first element, and a first element could similarly be termed a second element without departing from the scope of the present invention. The term “and/or” includes any one or any combination among a plurality of associated listed items.

When an element is referred to as being “connected” or “coupled” to another element, it will be understood that the element can be directly connected or coupled to another element, or other elements may be present therebetween. In contrast, when an element is referred to as being “directly connected” or “directly coupled” to another element, it will be understood that there are no intervening elements.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The singular forms are intended to include the plural forms, unless the context clearly indicates otherwise. In the present specification, it should be further understood that the terms “comprise,” “comprising,” “include,” and/or “including,” when used herein, specify the presence of stated features, numbers, steps, operations, elements, and/or components but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and groups thereof.

Unless otherwise defined, all terms including technical and scientific terms used herein have meanings which are the same as meanings generally understood by those skilled in the art. Terms, such as those defined in commonly used dictionaries, should be interpreted as having meanings that are consistent with their meanings in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined here.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings, components that are the same or correspond to each other will be denoted by the same or corresponding reference numerals regardless of symbols of the accompanying drawings, and redundant descriptions will be omitted.

FIG.1is a perspective view illustrating a camera module according to an embodiment,FIG.2is an exploded perspective view illustrating the camera module according to the embodiment, andFIG.3is a cross-sectional view along inFIG.1.

Referring toFIGS.1and2, a camera module1000according to the embodiment may include a cover CV, a first camera actuator1100, a second camera actuator1200, and a circuit substrate1300. In this case, the first camera actuator1100may be interchangeably used as a first actuator, and the second camera actuator1200may be interchangeably used as a second actuator.

The cover CV may cover the first camera actuator1100and the second camera actuator1200. A coupling force between the first camera actuator1100and the second camera actuator1200can be increased by the cover CV.

In addition, the cover CV may be formed of a material which blocks electromagnetic waves. Accordingly, the first camera actuator1100and the second camera actuator1200in the cover CV can be easily protected.

An open region into which light is incident may be positioned in an upper surface of the cover CV, and a prevention part CVP may be positioned around the open region. The prevention part CVP may inhibit diffused reflection of the incident light.

In addition, the first camera actuator1100may be an optical image stabilizer (OIS) actuator. For example, the first camera actuator1100may move an optical member in a direction perpendicular to an optical axis.

The first camera actuator1100may include a fixed focal length lens disposed in a predetermined lens-barrel (not shown). The fixed focal length lens may be referred to as a “single focal length lens” or “single lens.”

The first camera actuator1100may change a light path. In the embodiment, the first camera actuator1100may change an optical path in a perpendicular direction through an internal optical member (for example, a prism or mirror). By using such a structure, even when a thickness of a mobile terminal decreases, since a lens component of which a size is greater than a thickness of the mobile terminal is disposed in the mobile terminal, magnification, auto focusing (AF), and OIS functions can be performed through a change in the optical path.

However, the present invention is not limited thereto, and the first camera actuator1100may change an optical path in a perpendicular direction a plurality of times or change an optical path by a predetermined angle.

In addition, a first camera actuator according to an embodiment and a first camera actuator according to another embodiment which will be described below may each be applied to the first camera actuator.

The second camera actuator1200may be disposed behind the first camera actuator1100. The second camera actuator1200may be coupled to the first camera actuator1100. In addition, mutual coupling between the second camera actuator1200and the first camera actuator1100may be performed by one of various manners.

In addition, the second camera actuator1200may be a zoom actuator or auto focus (AF) actuator. For example, the second camera actuator1200may support a single lens or a plurality of lenses and move the lenses according to a control signal of a predetermined control unit to perform an AF function or zoom function.

In addition, the single lens or the plurality of lenses may independently or individually move in an optical axis direction to perform the zoom or AF function.

The circuit substrate1300may be disposed behind the second camera actuator1200. The circuit substrate1300may be electrically connected to the second camera actuator1200and the first camera actuator1100. In addition, the circuit substrate1300may be provided as a plurality of circuit substrates1300.

The camera module according to the embodiment may also be provided as a single camera module or a plurality of camera modules. For example, the plurality of camera modules may include a first camera module and a second camera module.

In addition, the first camera module may include a single actuator or a plurality of actuators. For example, the first camera module may include the first camera actuator1100and the second camera actuator1200.

In addition, the second camera module may include an actuator (not shown) which is disposed in a predetermined housing (not shown) and may drive a lens part. The actuator may be a voice coil motor, a micro actuator, a silicone actuator, or the like, and may be variously applied in an electrostatic manner, a thermal manner, a bimorph manner, an electrostatic force manner, or the like, but the present invention is not limited thereto. In addition, in the present specification, the camera actuator may be mentioned as an actuator or the like. In addition, the camera module provided as the plurality of camera modules may be mounted in various electronic device such as a mobile terminal.

Referring toFIG.3, the camera module according to the embodiment may include the first camera actuator1100for an OIS function and the second camera actuator1200for a zooming function and an AF function.

Light may enter the camera module or the first camera actuator through the open region positioned in an upper surface of the first camera actuator1100. That is, the light enters the first camera actuator1100in the optical axis direction (for example, an X-axis direction), and an optical path may be changed in a perpendicular direction (for example, a Z-axis direction) through the optical member. In addition, the light may pass through the second camera actuator1200and may be incident on an image sensor IS positioned at one end of the second camera actuator1200.

In the present specification, a lower surface refers to one side in a first direction. In addition, the first direction may be the X-axis direction in the drawings and may be interchangeably used with a second axis direction or the like. The second direction is the Y-axis direction in the drawings and may be interchangeably used with the first axis direction. The second direction is a direction perpendicular to the first direction. In addition, a third direction may be the Z-axis direction in the drawings and may be interchangeably used with a third axis direction. In addition, the third direction is a direction perpendicular to both the first direction and the second direction. In this case, the third direction (Z-axis direction) corresponds to a direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are directions perpendicular to the optical axis, and may be tilted by the second camera actuator. In addition, hereinafter, in the description about the first camera actuator1100, the optical axis direction is the third direction (Z-axis direction), and the present invention will be described based on that the optical axis direction is the third direction (Z-axis direction).

In addition, in the present specification, unless otherwise described, the term “inward” may refer to a direction from the cover CV to the first camera actuator, and the term “outward” may be a direction opposite to “inward.” That is, the first camera actuator and the second camera actuator may be positioned inward from the cover CV, and the cover CV may be positioned outward from the first camera actuator or the second camera actuator.

In addition, using such a structure, the camera module according to the embodiment may solve a spatial limitation of the first camera actuator and the second camera actuator by changing a path of light. That is, in the camera module according to the embodiment, the optical path of the camera module can extend while the thickness of the camera module is minimized in correspondence to the change in the path of light. In addition, it should be understood that the second camera actuator may also control a focal point and the like on the extended optical path to provide a wide range of magnification.

In addition, the camera module according to the embodiment may control the optical path through the first camera actuator to implement OIS, and accordingly, an occurrence of a decentering or tilting phenomenon can be minimized, and best optical characteristics can be implemented.

In addition, the second camera actuator1200may include an optical system and a lens driving unit. For example, at least one among a first lens assembly, a second lens assembly, a third lens assembly, and a guide pin may be disposed in the second camera actuator1200.

In addition, the second camera actuator1200may include a coil and a magnet and perform a high-magnification zooming function.

For example, the first lens assembly and the second lens assembly may be moving lenses which are moved using the coil, the magnet, and the guide pin, and the third lens assembly may be a fixed lens, but the present invention is not limited thereto. For example, the third lens assembly may perform a function of a focator which collects light to form an image at a specific position, and the first lens assembly may perform a function of a variator which reforms the image, which is formed through the third lens assembly, at another position. Meanwhile, the first lens assembly may be in a state in which a change in magnification is large because a distance to a subject or an image is greatly changed, and the first lens assembly, which is a variator, may play an important role in changing a focal length or magnification of the optical system. Meanwhile, image points, at which an image is formed through the first lens assembly which is the variator, may be slightly vary according to a position. Accordingly, the second lens assembly may perform a position compensation function for the image formed through the variator. For example, the second lens assembly may perform a function of a compensator for forming the image formed through the first lens assembly, which is the variator, at an accurate position of the actual image sensor. For example, the first lens assembly and the second lens assembly may be driven by an electromagnetic force generated due to interactions between the coil and the magnet. The above-described content may be applied to a lens assembly which will be described below. In addition, the first lens assembly to the third lens assembly may move in the optical axis direction, that is, the third direction. In addition, the first lens assembly to the third lens assembly may move individually or in conjunction with each other in the third direction.

Meanwhile, when the actuator for OIS and the actuator for AF or zoom are applied according to the embodiment of the present invention, magnetic field interference with a magnet for AF or zoom can be inhibited when OIS is performed. Since a first driving magnet of the first camera actuator1100is separately disposed from the second camera actuator1200, the magnetic field interference between the first camera actuator1100and the second camera actuator1200can be inhibited. In the present specification, the OIS may be interchangeably used with the terms such as hand shake correction, OIS, optical image correction, and shaking correction.

FIG.4is a perspective view illustrating the first camera actuator according to the embodiment, andFIG.5is an exploded perspective view illustrating the first camera actuator according to the embodiment.

Referring toFIGS.4and5, the first camera actuator1100according to the embodiment includes a first housing1120, a mover1130, a rotation part1140, a first driving unit1150, an elastic member EE, a first member1126, and a second member1131a.

The mover1130may include a holder1131and an optical member1132seated in the holder1131. In addition, the rotation part1140may include a tilting guide unit1141. In addition, the first driving unit1150includes driving magnets1151, driving coils1152, Hall sensor units1153, a first substrate part1154, and yoke parts1155.

First, the first camera actuator1100may include a shield can (not shown). The shield can (not shown) may be positioned at an outermost side of the first camera actuator1100to surround the rotation part1140and the first driving unit1150which will be described below.

The shield can (not shown) may block or reduce electromagnetic waves which are generated at the outside. That is, the shield can (not shown) may reduce an occurrence of a malfunction of the rotation part1140or the first driving unit1150.

The first housing1120may be positioned inside the shield can (not shown). When there is no shield can, the first housing1120may be positioned at an outermost side of the first camera actuator.

In addition, the first housing1120may be positioned inside the first substrate part1154which will be described below. The first housing1120may be fastened to the shield can (not shown) by being fitted to or engaged with each other.

The first housing1120may include a first housing side portion1121, a second housing side portion1122, a third housing side portion1123, and a fourth housing side portion1124. Details thereof will be described below.

The first member1126may be disposed in the first housing1120. The first member1126may be disposed between the second member1131aand the first housing. The first member1126may be disposed in the first housing or included in the first housing1120. Descriptions thereof will be described below.

The mover1130includes the holder1131and the optical member1132seated in the holder1131.

The holder1131may be seated in an accommodation portion1125of the first housing1120. The holder1131may include a first holder outer side surface to fourth holder outer side surfaces respectively corresponding to the first housing side portion1121, the second housing side portion1122, the third housing side portion1123, and the first member1126. For example, the first holder outer side surface to the fourth holder outer side surface may correspond to or face inner side surfaces of the first housing side portion1121, the second housing side portion1122, the third housing side portion1123, and the first member1126.

In addition, the holder1131may include the second member1131adisposed in a fourth seating groove. Details thereof will be described below.

The optical member1132may be seated in the holder1131. To this end, the holder1131may have a seating surface, and the seating surface may be formed by an accommodation groove. The seating surface may be coated with a bonding member. Accordingly, the optical member1132may be coupled to the holder1131.

In the embodiment, the optical member1132may be formed as a mirror or prism. Hereinafter, the optical member1132is illustrated based on the prism, but the optical member1132may be provided as a plurality of lenses as in the above-described embodiment.

Alternatively, the optical member1132may be provided as a plurality of lenses and a prism or mirror. In addition, the optical member1132may include a reflecting part disposed therein. However, the present invention is not limited thereto.

In addition, the optical member1132may reflect light reflected from the outside (for example, an object) into the camera module. In other words, the optical member1132may solve a spatial limitation of the first camera actuator and the second camera actuator by changing a path of reflected light. Accordingly, it should be understood that the camera module may also provide a wide range of magnification by extending an optical path while minimizing a thickness thereof.

In addition, the second member1131amay be coupled to the holder1131. The second member1131amay be disposed outside the holder1131and inside the housing. In addition, the second member1131amay be seated in an additional groove positioned at a region excluding the fourth seating groove in the fourth holder outer side surface in the holder1131. Therefore, the second member1131amay be coupled to the holder1131, and at least a part of the first member1126may be positioned between the second member1131aand the holder1131. For example, the at least a part of the first member1126may pass through a space formed between the second member1131aand the holder1131.

In addition, the second member1131amay be formed as a structure separated from the holder1131. By using such a structure, as will be described below, the first camera actuator can be easily assembled. Alternatively, the second member1131amay be integrally formed with the holder1131, but, hereinafter, the second member1131awill be described as a separated structure.

The rotation part1140may include the tilting guide unit1141. In addition, the rotation part1140may include magnetic members having the same polarities in order to press the tilting guide unit1141.

The tilting guide unit1141may be coupled to the mover1130and the first housing1120. Specifically, the tilting guide unit1141may be disposed between the holder1131and the first member1126. Accordingly, the tilting guide unit1141may be coupled to the mover1130of the holder1131and the first housing1120. However, unlike the above-described content, in the present embodiment, the tilting guide unit1141may be disposed between the first member1126and the holder1131. Specifically, the tilting guide unit1141may be positioned between the first member1126and the fourth seating groove of the holder1131.

The second member1131a, the first member1126, the tilting guide unit1141, and the holder1131may be sequentially disposed in the third direction (Z-axis direction). In addition, the tilting guide unit1141may be disposed close to the optical axis. Accordingly, the actuator according to the embodiment may easily change an optical path through first and second axis tilts which will be described below.

The tilting guide unit1141may include first protruding portions spaced apart from each other in the first direction (X-axis direction) and second protruding portions spaced apart from each other in the second direction (Y-axis direction). In addition, the first protruding portions and the second protruding portions may protrude in opposite directions. Details thereof will be described below.

The first driving unit1150include the driving magnets1151, the driving coils1152, the Hall sensor units1153, the first substrate part1154, and the yoke parts1155. Contents thereof will be described below.

In addition, the elastic member EE may be positioned between the mover1130and a fixed member (for example, the first housing1120or the first member1126). In addition, the tilting guide unit1141may be positioned between the fixed member and the mover. In addition, the elastic member EE may pull the mover1130toward the fixed member to bring the tilting guide unit1141into close contact with the fixed member and the mover. In addition, the elastic member EE may bring the tilting guide unit1141into close contact with the mover1130. In other words, the elastic member EE may pull the mover1130toward the housing1220or the first member1126which are the fixed member.

The elastic member EE may be disposed between the tilting guide unit1141and the housing1120. Particularly, the elastic member EE may be sequentially disposed on the tilting guide unit1141, the first member1126, and the second member1131a. That is, the first member1126, the elastic member EE, the second member1131a, the tilting guide unit1141, and the mover1130may be sequentially disposed in the third direction.

The elastic member EE may be formed of an elastic material and disposed between the first member1126and the second member1131ato couple the first member1126and the second member1131a. In addition, the elastic member EE may provide an elastic force to the second member1131aand the holder1131connected to the second member1131awith respect to the first member1126fixed to the housing1120.

Accordingly, the elastic member EE may be disposed between and coupled to the housing1120and the mover1130, and may press the tilting guide unit1141through the mover1130. Accordingly, an X-axis tilt and/or Y-axis tilt of the mover1130may be performed through the tilting guide unit1141.

In the elastic member EE, a portion in contact with the first member1126and a portion in contact with the second member1131a(or holder1131) and the housing1120may be spaced apart from each other in the third direction (Z-axis direction). The elastic member EE may have a pre-load due to a separation distance between the contact portions (first and second contact portions which will be described below). In addition, the pre-load may be transmitted to the tilting guide unit1141through the mover1130and to the first member1126through the tilting guide unit1141. Accordingly, the tilting guide unit1141disposed between the mover1130and the first member1126may be pressed by the elastic member EE. That is, a force by which the tilting guide unit1141is positioned between the mover1130and the first member1126may be maintained. Accordingly, even when X-axis tilting or Y-axis tilting is performed, the tilting guide unit1141is not separated, and a position of the tilting guide unit1141between the mover1130and the housing1120can be maintained. In addition, when a current is not supplied (for example, when a current is zero) after a current is supplied to a first coil and a second coil for an X-axis tilt or Y-axis tilt, the mover1130may return to an initial position by the above-described pre-load or a restoring force. That is, when a force (electromagnetic force which will be described below) greater than the pre-load is generated, the mover1130may perform X/Y-axis tilting, and when a force smaller than the pre-load is generated, the mover1130may return to the initial position, or a position may be maintained.

FIG.6Ais a perspective view illustrating the first housing of the first camera actuator according to the embodiment,FIG.6Bis a perspective view illustrating the first housing in a direction different from a direction inFIG.6A,FIG.6Cis a front view illustrating the first housing of the first camera actuator according to the embodiment.

Referring toFIGS.6A to6C, the first housing1120according to the embodiment may include the first housing side portion1121to the fourth housing side portion1124. In addition, the first member1126may be coupled to and integrally formed with the first housing1120. Accordingly, the first member1126may be a component included in the first housing1120. That is, the first housing1120may be coupled to and integrally formed with the first member1126. Alternatively, the first housing1120may include the first member1126.

The first housing side portion1121and the second housing side portion1122may be disposed to face each other. In addition, the third housing side portion1123and the fourth housing side portion1124may be disposed to face each other.

In addition, the third housing side portion1123and the fourth housing side portion1124may be disposed between the first housing side portion1121and the second housing side portion1122.

The third housing side portion1123and the fourth housing side portion1124may be in contact with the first housing side portion1121, and the second housing side portion1122. In addition, the third housing side portion1123may be a lower surface in the first housing1120. In addition, the fourth housing side portion1124may be an upper surface in the first housing1120. In addition, the above-described content may also be equally applied to the description about directions.

The first housing side portion1121may include a first housing hole1121a. The first coil, which will be described below, may be positioned in the first housing hole1121a.

In addition, the second housing side portion1122may include a second housing hole1122a. In addition, the second housing hole1122aand the first housing hole1121amay be symmetrically positioned with respect to the first direction or the third direction. The second housing hole1122amay be an empty region.

In addition, the first housing side portion1121and the second housing side portion1122may be side surfaces of the first housing1120.

The first coil may be coupled to the first substrate part. In the embodiment, the first coil may be electrically connected to the first substrate part, and a current may flow through the first coil. The current is a factor of an electromagnetic force by which the first camera actuator may perform tilting about the X-axis.

In addition, the third housing side portion1123may include a third housing hole1123a.

The second coil, which will be described below, may be positioned in the third housing hole1123a. In addition, the second coil may be electrically connected and coupled to the first substrate part in contact with the first housing1120. Accordingly, the second coil may be electrically connected to the first substrate part and may receive a current from the first substrate part. The current is a factor of an electromagnetic force by which the first camera actuator may perform tilting about the Y-axis.

The first member1126may be seated between the first housing side portion1121to the fourth housing side portion1124. Accordingly, the first member1126may be positioned on the third housing side portion1123. For example, the first member1126may be positioned at one side. The first member1126and the holder may be sequentially positioned in the third direction.

The fourth housing side portion1124may be disposed between the first housing side portion1121and the second housing side portion1122and may be in contact with the first housing side portion1121, the second housing side portion1122, and the third housing side portion1123.

In addition, the fourth housing side portion1124may include a fourth housing hole1124a. The fourth housing hole1124amay be positioned above the optical member. Accordingly, light may be pass through the fourth housing hole1124aand may be incident on the optical member.

In addition, the first housing1120may include the accommodation portion1125formed by the first housing side portion1121to the fourth housing side portion1124. The first member1126, the second member1131a, the mover1130, and the elastic member EE may be positioned in the accommodation portion1125as components.

In addition, the first housing1120may further include a fifth housing side portion facing the first member1126. In addition, the fifth housing side portion may be disposed between the first housing side portion1121and the second housing side portion1122and may be in contact with the first housing side portion1121, the second housing side portion1122, and the third housing side portion1123. In addition, the fifth housing side portion may include an open region to provide a path through which light reflected by the optical member1132moves. In addition, the fifth housing side portion may include a protrusion, groove, or the like to be easily coupled to another adjacent camera actuator. By using such a structure, the optical path is provided, and at the same time, a coupling force between the fifth housing side portion, in which an opening providing the optical path is formed, and other components is increased, movement of the opening due to separation and the like is suppressed, and thus a change in the optical path can be minimized.

In addition, as described above, the first member1126may be a component coupled to and included in the first housing1120. That is, the first member1126may be disposed in the first housing1120. Alternatively, the first member1126may be positioned in the first housing1120.

In addition, the first member1126may be coupled to the first housing1120. In the embodiment, the first member1126may be positioned between the first housing side portion1121and the second housing side portion1122. In addition, the first member1126may be positioned between the third housing side portion1123and the fourth housing side portion1124.

In addition, the first member1126may be positioned on the third housing side portion1123and may be in contact with the first to third housing side portions.

In addition, a first stopper1121bmay be positioned on the inner side surface of the first housing side portion1121. In addition, a second stopper1122bmay be positioned on an inner side surface of the second housing side portion1122.

The first stopper1121band the second stopper1122bmay be symmetrically positioned with respect to the first direction (X-axis direction). The first stopper1121band the second stopper1122bmay extend in the first direction (X-axis direction). By using such a structure, even when the first member1126moves into the first housing1120, a position thereof may be maintained by the first stopper1121band the second stopper1122b. In other words, the first stopper1121band the second stopper1122bmay maintain a state in which the first member1126is positioned at one side in the first housing1120.

In addition, the first stopper1121band the second stopper1122bmay fix the position of the first member1126to eliminate an error factor such as vibrations by fixing the position of the tilting guide unit between the first member1126and the mover. Accordingly, the first camera actuator according to the embodiment may accurately perform X-axis tilting and Y-axis tilting.

In addition, a separation distance L2between the first stopper1121band the second stopper1122bin the second direction (Y-axis direction) may be smaller than a maximum length L1of the first member1126in the second direction (Y-axis direction). Accordingly, the first member1126may be coupled to the first housing1120by being laterally assembled to or inserted into the first housing1120. In addition, the housing1120may include the accommodation portion1125formed by the first housing side portion1121to the fourth housing side portion1124. The first member1126, the second member1131a, the tilting guide unit1141, the mover1130, and the elastic member EE may be positioned in the accommodation portion1125as the components.

The first member1126may be disposed in the housing1120. The first member1126may be disposed or included in the first housing. In addition, the first member1126may be coupled to the housing1120. In the embodiment, the first member1126may be seated in a housing groove1123b′ formed in the third housing side portion1123or pass through at least a part of the housing groove1123b′ to be coupled to the third housing side portion1123. Therefore, the first member1126may be coupled to the housing1120and may maintain fixation between the mover1130and the tilting guide unit1141, which will be described below.

In addition, the first member1126may include first coupling parts PP1disposed in regions adjacent to the first housing side portion1121and the second housing side portion1121. Each of the first coupling parts PP1may be formed as a protrusion. In addition, the first coupling parts PP1may be coupled to a first bonding part EP1. As will be described below, the first coupling parts PP1may be inserted into first bonding holes of the first bonding part EP1.

In addition, the first member1126includes second protrusion grooves in which the second protruding portions of the tilting guide unit are seated. Second protrusion grooves PH2may be positioned in an inner side surface1126s1of the first member1126. Accordingly, in the first member1126, protruding portions (for example, the second protruding portions) of the tilting guide unit may be disposed close to the prism in the fourth seating groove so that the protruding portions are disposed close to a center of gravity of the mover1130. Accordingly, when the holder tilts, a moment by which the mover1130moves for the tilting can be minimized. Accordingly, since current consumption for driving the coil is also minimized, power consumption of the camera actuator can be reduced.

In addition, the first member1126may include through holes1126aand1126b. The through holes may be provided as a plurality of through holes and include a first through hole1126aand a second through hole1126b.

First and second extending portions of the second member, which will be described below, may pass through the first through hole1126aand the second through hole1126b, respectively. Therefore, the second member and the first member may be coupled. In other words, the first housing and the mover may be coupled to each other.

The second protrusion grooves PH2may be positioned between the first through hole1126aand the second through hole1126b. By using such a structure, a coupling force between the tilting guide unit1141and the first member1126may be increased to inhibit degradation of accuracy of a tilt occurring due to movement of the tilting guide unit1141in the first housing.

In addition, a second groove gr2may be positioned in an outer side surface1126s2of the first member1126. A magnetic member may be seated in the second groove gr2. In addition, the outer side surface1126s2of the first member1126may face the second member or inner side surface of a member base portion. In addition, a magnetic member seated on the second member and the magnetic member of the first member1126may face each other and have the same polarities. Accordingly, a repulsive force may be generated. In addition, since the first member1126presses the tilting guide unit inward or the holder using the repulsive force, even when a current is not supplied to the coil, the mover may be spaced a predetermined distance from the third housing side portion in the first housing. In other words, a coupling force between the mover, the housing, and the tilting guide unit can be maintained.

In addition, when the first member1126is integrally formed with the first housing1120, a coupling force between the first member1126and the first housing1120can be increased to improve the reliability of the camera actuator. In addition, when the first member1126and the first housing1120are separately formed, the ease of assemblability and manufacture of the first member1126and the first housing1120can be improved.

In addition, in the embodiment, the first member1126may include the first through hole1126aand the second through hole1126bas described above. In addition, the first through hole1126aand the second through hole1126bmay be disposed in parallel to overlap each other in the second direction (Y-axis direction).

In addition, the first member1126may include an upper member UA positioned on the first through hole1126aand the second through hole1126band a lower member BA disposed under the first through hole1126aand the second through hole1126b. Accordingly, the first through hole1126aand the second through hole1126bmay be positioned in the middle of the first member1126. That is, the first member1126may include a connecting member MA positioned beside the side portion first through hole1126aand the second through hole1126b. That is, the upper member UA and the lower member BA may be connected to each other through the connecting member MA. In addition, the lower member BA may be provided as a plurality of lower members BA in order to form the first and second through holes, and plurality of lower members BA may be spaced apart from each other in the second direction (Y-axis direction).

Accordingly, since the first member1126has the upper member UA, a rigidity can be improved. For example, the rigidity of the first member1126can be improved when compared to the case in which there is no upper member UA. For example, in the present embodiment, a unit of the rigidity may be [N/μm]. Accordingly, the reliability of the first camera actuator according to the embodiment can be improved.

In addition, first coupling grooves1126kmay be positioned in the outer side surface1126s2of the first member1126. The first coupling grooves1126kmay be positioned in an edge of the outer side surface1126s2of the first member1126. Particularly, the first coupling grooves1126kmay be positioned at end portions (for example, left and right side portions) in the outer side surface1126s2of the first member1126and positioned adjacent to the first housing side portion1121.

The first coupling grooves1126kmay be positioned to correspond to second coupling grooves1121mand1122mof the first housing side portion1121and the second housing side portion1122. In the embodiment, the first coupling grooves1126kmay be positioned to face the second coupling grooves1121mand1122mof the first housing side portion1121and the second housing side portion1122. The second coupling grooves1121mand1122mmay be positioned in a side surface adjacent to and coplanar with the outer side surface1126s2of the first member1126.

In the embodiment, the first coupling grooves1126kand second coupling grooves1121mand1122mmay be provided as a plurality of first coupling grooves1126kand a plurality of second coupling grooves1121m, and the plurality of first coupling grooves1126kand the plurality of second coupling grooves1121mand1122mmay be symmetrically positioned with respect to the first direction or the second direction.

In addition, a bonding member may be applied on the first coupling grooves1126kand the second coupling grooves1121mand1122m. That is, the bonding member may be applied between the first housing side portion (or the second housing side portion) and the first member1126to improve a coupling force between the housing1120and the first member1126. The bonding member may include an epoxy or the like but is not limited to the material.

In addition, the first member1126may further include a first protruding portion and a second protruding portion. The first protruding portion may be in contact with the first housing side portion, and the second protruding portion may be in contact with the second housing side portion. The first protruding portion may extend from one end portion of the outer side surface1126s2of the first member in the third direction (Z-axis direction). The second protruding portion may extend from the other end portion of the outer side surface1126s2of the first member in the third direction (Z-axis direction). That is, the first protruding portion and the second protruding portion may extend toward the holder.

A position of the first protruding portion may be maintained by the first stopper1121b, and a position of the second protruding portion may be maintained by the second stopper1122b. Accordingly, the reliability of the camera actuator according to the embodiment can be improved.

FIG.7is a perspective view illustrating the optical member of the first camera actuator according to the embodiment.

Referring toFIG.7, the optical member1132may be seated in the holder. The optical member1132may be a right-angled prism as a reflecting part but is not limited thereto.

In the embodiment, the optical member1132may include a protruding portion (not shown) on a part of an outer side surface thereof. The optical member1132may be easily coupled to the holder using the protruding portion (not shown). In addition, the holder may also include a groove or protrusion to be coupled to the optical member1132.

In addition, a lower surface1132bof the optical member1132may be seated on the seating surface of the holder. Accordingly, the lower surface1132bof the optical member1132may correspond to the seating surface of the holder. In the embodiment, the lower surface1132bmay be formed as an inclined surface like the seating surface of the holder. Accordingly, the prism may move according to movement of the holder, and the optical member1132may be inhibited from being separated from the holder according to the movement at the same time.

In addition, a groove may be formed in the lower surface1132bof the optical member1132, and a bonding member may be applied in the groove, and thus the optical member1132may be coupled to the holder. Alternatively, a bonding member may be applied to a groove or protrusion of the holder, and the holder may be coupled to the optical member1132. The optical member1132and the holder may have various shapes to be coupled to each other.

In addition, as described above, the optical member1132may be formed as a structure capable of reflecting light reflected from the outside (for example, an object) into the camera module. Like the embodiment, the optical member1132may also be formed as a single mirror. In addition, the optical member1132may solve a spatial limitation of the first camera actuator and the second camera actuator by changing a path of reflected light. Accordingly, it should be understood that the camera module can provide a wide range of magnification by extending an optical path while minimizing the thickness of the camera module. In addition, it should be understood that the camera module including the camera actuator according to the embodiment can also provide a wide range of magnification by extending an optical path while minimizing a thickness.

FIG.8Ais a perspective view illustrating the holder of the first camera actuator according to the embodiment,FIG.8Bis a bottom view illustrating the holder of the first camera actuator according to the embodiment, andFIG.8Cis a front view illustrating the holder of the first camera actuator according to the embodiment.FIG.8Dis a rear view illustrating the second member of the first camera actuator according to the embodiment, andFIG.8Eis a bottom view illustrating the second member of the first camera actuator according to the embodiment.

Referring toFIGS.8A to8E, the holder1131may include a seating surface1131kon which the optical member1132is seated. The seating surface1131kmay be an inclined surface. In addition, the holder1131may include a step portion on the seating surface1131k. In addition, the step portion in the holder1131may be coupled to the protruding portion (not shown) of the optical member1132.

The holder1131may include a plurality of outer side surfaces. For example, the holder1131may include a first holder outer side surface1131S1, a second holder outer side surface1131S2, a third holder outer side surface1131S3, and a fourth holder outer side surface1131S4.

The first holder outer side surface1131S1may be positioned to face the second holder outer side surface1131S2. That is, the first holder outer side surface1131S1and the second holder outer side surface1131S2may be symmetrically disposed with respect to the first direction (X-axis direction). The first holder outer side surface1131S1may be a first side surface. In addition, the second holder outer side surface1131S2, which will be described below, may be a second side surface.

The first holder outer side surface1131S1may be positioned to correspond to the first housing side portion. That is, the first holder outer side surface1131S1may be positioned to face the first housing side portion. In addition, the second holder outer side surface1131S2may be positioned to correspond to the second housing side portion. That is, the second holder outer side surface1131S2may be positioned to face the second housing side portion.

In addition, the first holder outer side surface1131S1may include a first seating groove1131S1a. In addition, the second holder outer side surface1131S2may include a second seating groove1131S2a. The first seating groove1131S1aand the second seating groove1131S2amay be symmetrically disposed with respect to the first direction (X-axis direction).

In addition, the first seating groove1131S1aand the second seating groove1131S2amay be disposed to overlap in the second direction (Y-axis direction). In addition, a first magnet1151amay be disposed in the first seating groove1131S1a, and a dummy member DM may be disposed in the second seating groove1131S2a. The first magnet1151aand the dummy member DM may also be symmetrically disposed with respect to the first direction (X-axis direction). In the present specification, it should be understood that the first magnet and a second magnet can be coupled to the housing using yokes or a bonding member.

As described above, an electromagnetic force induced by the first magnet of the first seating groove1131S1amay be provided to the holder1131.

According to the embodiment, a weight of the first magnet of the first seating groove1131S1aand a weight of the dummy member DM of the second seating groove1131S2amay have the same weight. Accordingly, even when X-axis tilting of the holder1131is performed by the electromagnetic force generated by the first magnet, inclination to one side due to imbalance of weight can be inhibited. Accordingly, the X-axis tilting can be accurately performed.

The third holder outer side surface1131S3may be in contact with the first holder outer side surface1131S1and the second holder outer side surface1131S2and may be an outer side surface extending from one side of the first holder outer side surface1131S1and one side of the second holder outer side surface1131S2in the second direction (Y-axis direction). In addition, the third holder outer side surface1131S3may be positioned between the first holder outer side surface1131S1and the second holder outer side surface1131S2. The third holder outer side surface1131S3may be a lower surface in the holder1131. That is, the third holder outer side surface1131S3may be positioned to face the third housing side portion.

In addition, the third holder outer side surface1131S3may include a third seating groove1131S3a. A second magnet1151bmay be disposed in the third seating groove1131S3a. The third holder outer side surface1131S3may be positioned to face the third housing side portion1123.

In addition, at least a part of the third housing hole1123amay overlap the third seating groove1131S3ain the first direction (X-axis direction). Accordingly, the second magnet1151bin the third seating groove1131S3aand a second coil1152bin the third housing hole1123amay be positioned to face each other. In addition, the second magnet1151band the second coil1152bmay generate an electromagnetic force so that the first camera actuator may perform Y-axis tilting.

In addition, X-axis tilting may be performed by the first magnet, and Y-axis tilting may be performed by only the second magnet.

In the embodiment, the third seating groove1131S3amay be the same as the first seating groove1131S1aor the second seating groove1131S2a. By using such a structure, Y-axis tilting can be performed by current control like X-axis tilting.

The fourth holder outer side surface1131S4may be in contact with the first holder outer side surface1131S1and the second holder outer side surface1131S2and may be an outer side surface extending from the first holder outer side surface1131S1and the second holder outer side surface1131S2in the first direction (X-axis direction). In addition, the fourth holder outer side surface1131S4may be positioned between the first holder outer side surface1131S1and the second holder outer side surface1131S2. That is, the fourth holder outer side surface1131S4may be positioned to face the first member.

The fourth holder outer side surface1131S4may include a fourth seating groove1131S4a. The tilting guide unit1141may be positioned in the fourth seating groove1131S4a. In addition, the second member1131aand the first member1126may be positioned in the fourth seating groove1131S4a. In addition, the fourth seating groove1131S4amay include a plurality of regions. The fourth seating groove1131S4amay include a first region AR1, a second region AR2, and a third region AR3.

The second member1131amay be positioned in the first region AR1. That is, the first region AR1may overlap the second member1131ain the first direction (X-axis direction). Particularly, the first region AR1may be a region in which the member base portion of the second member1131ais positioned. In this case, the first region AR1may be positioned on the fourth holder outer side surface1131S4. That is, the first region AR1may correspond to a region positioned above the fourth seating groove1131S4a. In this case, the first region AR1may not be one region in the fourth seating groove1131S4a.

The first member1126may be positioned in the second region AR2. That is, the second region AR2may overlap the first member1126in the first direction (X-axis direction).

In addition, the second region AR2may be positioned on the fourth holder outer side surface1131S4like the first region. That is, the second region AR2may correspond to a region positioned in an upper portion of the fourth seating groove1131S4a.

The tilting guide unit may be positioned in the third region AR3. Particularly, a base of the tilting guide unit may be positioned in the third region AR3. That is, the third region AR3may overlap the tilting guide unit (for example, the base) in the first direction (X-axis direction).

In addition, the second region AR2may be positioned between the first region AR1and the third region AR3.

In addition, the second member may be disposed in the first region AR1, and the second member1131amay include a first groove gr1. In the embodiment, the second member1131amay include the first groove gr1formed in an inner side surface1131aas. In addition, the magnetic member may be disposed in the first groove gr1as described above.

In addition, the first member may be disposed in the second region AR2as described above. The first groove gr1may be positioned to face the second groove gr2. For example, at least a part of the first groove gr1may overlap the second groove gr2in the third direction (Z-axis direction). In addition, as described above, a repulsive force generated by the magnetic members disposed in the first and second grooves may be transmitted to the fourth seating groove1131S4aof the holder1131through the second member. Accordingly, the holder may apply a force to the tilting guide unit in a direction the same as that of the repulsive force generated by the magnetic members. In conjunction with the pre-load of the elastic member, the applied force may firmly maintain coupling between the mover, the housing, and the tilting guide unit. Accordingly, the reliability of the camera module against an external impact and the like can be improved.

The first member may include the second groove gr2facing the first groove gr1formed in the outer side surface. In addition, the first member may include the second protrusion grooves formed in the inner side surface as described above. In addition, the second protruding portions may be seated in the second protrusion grooves. The tilting guide unit1141may be disposed in the third region AR3. In addition, first protrusion grooves PH1may be positioned in the fourth seating groove1131S4a. In addition, the first protruding portions of the tilting guide unit1141may be accommodated in the first protrusion grooves PH1. Accordingly, first protruding portions PR1may be in contact with the first protrusion grooves. A maximum diameter of each of the first protrusion grooves PH1may correspond to a maximum diameter of each of the first protruding portions PR1. This may be equally applied to the second protrusion grooves and second protruding portions PR2. That is, a maximum diameter of each of the second protrusion grooves may correspond to a maximum diameter of each of the second protruding portions PR2. Accordingly, the second protruding portions may be in contact with the second protrusion grooves. By using such a structure, first axis tilting can be easily performed based on the first protruding portions, second axis tilting can be easily performed based on the second protruding portions, and radii of a tilt can be extended.

In addition, in the embodiment, the first protrusion groove PH1may be provided as a plurality of first protrusion grooves PH1. For example, any one of the first protrusion grooves PH1and the second protrusion grooves PH2may include a 1-1 protrusion groove PH1aand a 1-2 protrusion groove PH1b. Hereinafter, the present invention will be described that the first protrusion grooves PH1includes the 1-1 protrusion groove PH1aand the 1-2 protrusion groove PH1b. In addition, the following description may be equally applied to the second protrusion grooves PH2. For example, the second protrusion grooves PH2may include a 2-1 protrusion groove and a 2-2 protrusion groove, a description of the 1-1 protrusion groove may be applied to the 2-1 protrusion groove, and a description of the 1-2 protrusion groove may be applied to the 2-2 protrusion groove.

The 1-1 protrusion groove PH1aand the 1-2 protrusion groove PH1bmay be disposed in parallel in the first direction (X-axis direction). A maximum area of the 1-1 protrusion groove PH1amay be the same as that of the 1-2 protrusion groove PH1b.

The numbers of inclined surfaces of the plurality of first protrusion grooves PH1may be different. For example, the first protrusion grooves PH1may include groove lower surfaces and inclined surfaces. In this case, the numbers of the inclined surfaces of the plurality of protrusion grooves may be different. In addition, areas of the lower surfaces of the protrusion grooves may also be different.

For example, the 1-1 protrusion groove PH1amay include a first groove lower surface LS1and first inclined surfaces CS1. The 1-2 protrusion groove PH1bmay include second groove lower surfaces LS2and a second inclined surfaces CS2.

In this case, an area of the first groove lower surface LS1may be different from an area of each of the second groove lower surfaces LS2. The area of each of the first groove lower surfaces LS1may be smaller than the area of the second groove lower surface LS2.

In addition, the number of the first inclined surfaces CS1in contact with the first groove lower surface LS1may be different from the number of the second inclined surface CS2. For example, the number of the first inclined surfaces CS1may be greater than the number of the second inclined surface CS2.

Using such a structure, an assembly tolerance of the first protruding portions seated in the first protrusion grooves PH1can be easily compensated for. For example, since the number of the first inclined surfaces CS1is greater than the number of the second inclined surface CS2, the first protruding portion may be in contact with the larger number of the inclined surfaces, and thus the position of the first protruding portion can be more accurately maintained in the 1-1 protrusion groove PH1a.

Unlike this, since the number of inclined surfaces in the 1-2 protrusion groove PH1bin contact with the first protruding portion is smaller than that in the 1-1 protrusion groove PH1a, the position of the first protruding portion can be easily adjusted.

In the embodiment, the second inclined surfaces CS2may be spaced apart from each other in the second direction (Y-axis direction). In addition, the second groove lower surface LS2may extend in the first direction (X-axis direction), and in a state in which the first protruding portion is in contact with the second inclined surface CS2, the first protruding portion may easily move in the first direction (X-axis direction). That is, in the 1-2 protrusion groove PH1b, the position of the first protruding portion can be easily adjusted.

In addition, in the present embodiment, heights of the first region AR1, the second region AR2, and the third region AR3may be different in the first direction (X-axis direction). In the embodiment, the height of the first region AR1may be greater than the height of the second region AR2and the height of the third region AR3in the first direction (X-axis direction). Accordingly, a step may be positioned between the first region AR1and the second region AR2.

In addition, the second member1131amay be seated on the fourth holder outer side surface1131S4. A second coupling part PP2may be positioned on the outer side surface (for example, a surface opposite to a surface facing the second member) of the second member1131a. The second coupling part PP2may include a coupling base PP2aand second coupling protruding portions PP2b. The second coupling part PP2may be disposed to overlap the first protruding portion, which will be described below, in the first direction (X-axis direction).

The second coupling protruding portion PP2bmay be provided as a plurality of second coupling protruding portions PP2b, and the plurality of second coupling protruding portions PP2bmay be spaced apart from each other in the second direction (Y-axis direction). In this case, all bisectors between the plurality of second coupling protruding portions PP2bmay be positioned on top points of the first protruding portions in the first direction (X-axis direction).

In addition, the second member1131amay include the first groove gr1. In other words, the first groove gr1may be positioned in an inner side surface of a member base portion1131aa. In addition, the above-described magnetic member may be seated in the first groove gr1. In addition, the first groove gr1may be provided as a plurality of first grooves gr1according to the number of magnetic members. That is, the number of the first grooves gr1may correspond to the number of the magnetic members.

In addition, the second member1131amay include the member base portion1131aa, a first extending portion1131ab, and a second extending portion1131ac.

The member base portion1131aamay be positioned at an outermost side of the first camera actuator. The member base portion1131aamay be positioned outside the first member. That is, the first member may be positioned between the member base portion1131aaand the tilting guide unit.

The first extending portion1131abmay extend from an edge of the member base portion1131aain the third direction (Z-axis direction). That is, the first extending portion1131abmay extend from the member base portion1131aatoward the holder1131. This may be the same as the second extending portion1131ac. In addition, the second extending portion1131acmay extend from an edge of the member base portion1131aain the third direction (Z-axis direction). In the embodiment, the first extending portion1131aband the second extending portion1131acmay be positioned at the edges of the member base portion1131aain the second direction (Y-axis direction). In addition, the first extending portion1131aband the second extending portion1131acmay be disposed between the upper member and the lower member.

Accordingly, the second member1131amay have a groove formed by the first extending portion1131aband the second extending portion1131ac. That is, the groove may be positioned between the first extending portion1131aband the second extending portion1131ac. Accordingly, the first extending portion1131aband the second extending portion1131acmay be connected to each other by only the member base portion1131aa.

In addition, since the second member1131ais coupled to the holder and moves when X-axis tilting and Y-axis tilting are performed, a rigidity of the second member1131amay be greater than a rigidity of the first member.

In addition, as described above, the first member according to the embodiment may have the upper member and the lower member to improve the rigidity. By using such a structure, a difference in rigidity between the second member and the first member can decrease. Accordingly, when X-axis tilting or Y-axis tilting of both the second member1131aand the holder1131coupled to the second member1131ais performed, an adjacent distance of the second member1131afrom the first member may decrease, and the second member1131amay be in contact with the first member. Accordingly, as described above, since the first member has the improved rigidity, the first member can easily serve as a stopper. That is, the reliability of the camera actuator can be improved.

In addition, the difference in rigidity between the first member and the second member decreases, when tilting is performed, damage due to contact can be minimized. That is, the reliability of the camera actuator can be improved.

In addition, the first extending portion1131abmay be spaced apart from the second extending portion1131acin the second direction (Y-axis direction) to form a separation space. The first member and the tilting guide unit may be seated in the separation space.

In addition, a length of the first extending portion1131aband a length of the second extending portion1131acmay be the same in the third direction (Z-axis direction. Accordingly, since coupling forces, weights, and the like are balanced, tilting of the holder can be accurately performed without being tilted toward one side.

In addition, the first extending portion1131aband the second extending portion1131acmay be coupled to the holder. In the present specification, it should be understood that the coupling may be performed between each other by a bonding member in addition to the above-described protrusion and groove structures. In the embodiment, the first extending portion1131aband the second extending portion1131acmay include third coupling grooves1131kformed in the third direction (Z-axis direction). In addition, coupling protrusions1131mmay be positioned in regions of the fourth seating groove1131S4aoverlapping the first extending portion1131aband the second extending portion1131acin the third direction (Z-axis direction). The coupling protrusions1131mmay be positioned to correspond to the third coupling grooves1131k.

For example, a bonding member such as an epoxy may be applied in the third coupling grooves1131k. In addition, coupling protrusions1131mmay be inserted into the third coupling grooves1131kof the first extending portion1131aband the second extending portion1131ac. By using such a structure, the second member1131aand the holder1131may be coupled to each other. In addition, due to the coupling, a repulsive force applied to the second member1131amay be transmitted to the holder1130. However, as described above, it should be understood that positions of the protrusion and groove structures may be changed.

FIG.9Ais a plan view illustrating the elastic member according to the embodiment,FIG.9Bis a side view illustrating the elastic member according to the embodiment, andFIG.9Cis a top view illustrating the elastic member according to the embodiment.FIG.9Dis a view for describing that the first member, the second member, and the elastic member are coupled in the first camera actuator according to the embodiment, andFIG.9Eis a view in which the first member and the second member are removed from the first camera actuator inFIG.9D.

Referring toFIGS.9A to9C, the elastic member EE according to the embodiment may include a first bonding part EP1, a second bonding part EP2, and connecting parts CP.

In the embodiment, the first bonding part EP1may be connected to the first housing1120, and thus the first bonding part EP1may be coupled to the first housing1120. That is, in addition, the first bonding part EP1may be coupled to the fixed member. Alternatively, the first bonding part EP1may be coupled to the housing1120or the first member1126. Hereinafter, like the drawings, the first bonding part EP1may be coupled to the first member1126. Therefore, the first bonding part EP1may be coupled to the housing1120.

In addition, the second bonding part EP2may be coupled to the second member1131a, and thus the second bonding part EP2may be coupled to the second member1131a.

The connecting parts CP may be disposed between the first bonding part EP1and the second bonding part EP2. That is, one end of each of the connecting parts CP may be connected to the first bonding part EP1, and the other end may be connected to the second bonding part EP2. Specifically, the first bonding part EP1according to the embodiment may include a first flat region EP1fand a plurality of first bonding holes EP1hpositioned in the first flat region EP1f.

The first flat region EP1fmay have a rectangular shape. Accordingly, the first flat region EP1fmay have a closed loop shape. In addition, the first flat region EP1fmay be positioned along an edge of the first member1126. Accordingly, a coupling force of the first bonding part EP1with the first member1126may be increased, when a pre-load, which will be described below, is generated, the first bonding part EP1is supported by and coupled to the first member1126, and thus the reliability of the element can be improved.

The first bonding hole EP1hmay be provided as the plurality of first bonding holes EP1h, and the plurality of first bonding holes EP1hmay have hole or groove shapes. In addition, the first bonding hole EP1hmay be coupled to a protrusion or the like formed on the first member1126.

In addition, the first bonding holes EP1hmay be disposed on a first bisector LX1or second bisector LX2or may be symmetrically disposed with respect to the first bisector LX1or second bisector LX2. Accordingly, since a coupling force generated by the elastic member EE is not concentrated on one side, X-axis tilting or Y-axis tilting can be accurately performed.

In addition, the first bisector LX1may be a line which bisects the first bonding part EP1in the first direction (X-axis direction). Alternatively, the first bisector LX1may be a line which bisects the second bonding part EP2in the first direction (X-axis direction). In addition, the second bisector LX2may be a line which bisects the first bonding part EP1in the second direction (Y-axis direction). Alternatively, the second bisector LX2may be a line which bisects the second bonding part EP2in the second direction (Y-axis direction). In addition, an intersection point CK may be a point at which the first bisector LX1and the second bisector LX2intersect each other. Hereinafter, the present invention will be described based on this.

The second bonding part EP2may be positioned inside the first bonding part EP1. Specifically, the second bonding part EP2may be surrounded by the first bonding part EP1. The term “inside” refers to a direction from the first bonding part EP toward the second bonding part EP2and corresponds to a direction from the first coupling part toward the second coupling part.

In addition, the second bonding part EP2may be disposed between the mover1130and the first bonding part EP1. Alternatively, the second bonding part EP2may be disposed between the second member1131aand the first bonding part EP1. That is, the second bonding part EP2may be spaced apart from the first bonding part EP1in the third direction (Z-axis direction).

The connecting parts CP according to the embodiment may extend from the second member1131atoward the first member1126or from the first member1126toward the second member1131a. That is, the connecting parts CP may extend in the third direction (Z-axis direction). For example, the connecting parts CP may be disposed between the first bonding part EP1and the second bonding part EP2and may connect the first bonding part EP1and the second bonding part EP2. Accordingly, since the first bonding part EP1is a fixed member fixed to the housing (the housing is fixed), an elastic restoring force generated by the elastic member EE may be generated from the second bonding part EP2toward the first bonding part EP1. Accordingly, the second member1131aconnected to the second bonding part EP2and the mover1130connected to the second member1131amay also generate forces from the second bonding part EP2toward the first bonding part EP1. Accordingly, the above-described force may be applied between the mover1130and the tilting guide unit1141. In addition, since the tilting guide unit1141ultimately presses the first member1126, the position of the tilting guide unit1141between the mover1130and the first member1126(or the housing) may be maintained to perform first axis tilting or second axis tilting which will be described below.

In addition, due to a separation distance dd1between the first bonding part EP1and the second bonding part EP2in the third direction (Z-axis direction), the elastic member EE may have the pre-load which is the above-described force.

In addition, the second bonding part EP2of the elastic member EE may not be disposed on a surface in contact with the first bonding part EP1of the elastic member EE and one surface of the first member1126which is the fixed member. As described above, the first bonding part EP1and the second bonding part EP2may be positioned on different planes (XY) and may be spaced apart from each other in the third direction (Z-axis direction). Accordingly, the second bonding part EP2may be positioned closer to a reflection member than the first bonding part EP1.

In addition, in the embodiment, even when the pre-load is generated in a direction opposite to the third direction (for example, a direction from the tilting guide unit toward the second member), a position of the tilting guide unit1141may be easily maintained. In addition, when a magnetic member and the like are not used, a malfunction of another camera actuator (for example, the second camera actuator) adjacent to the first camera actuator due to a magnetic force can be inhibited. In addition, in the first camera actuator according to the embodiment, a magnetic member and the like are not used, the light and thin elastic member is used, and thus miniaturization can be easily achieved. Alternatively, as a modified example, a repulsive force may be generated between magnetic members by arranging the magnetic members having the same polarity in the above-described first groove and second groove. In this case, the generated repulsive force may be transmitted to a fourth seating groove of a holder through a second member. In addition, the holder may apply a force toward a tilting guide unit in a direction which is the same as that of the generated repulsive force. Accordingly, an elastic member can be easily restored by the repulsive force generated by the magnetic members. That is, the reliability of the elastic member can be improved. In addition, since a position of a tilting guide unit1141is more easily maintained by the repulsive force, X-axis tilting or Y-axis tilting can be accurately performed.

In the embodiment, the second bonding part EP2may include a second flat region EP2fand a plurality of second bonding holes EP2hpositioned in the second flat region EP2f. The second flat region EP2fmay have a circular shape, and may be in contact with the second member1131a. In addition, the second bonding holes EP2hmay be coupled to the second coupling part PP2.

In addition, in the embodiment, the plurality of first bonding holes EP1hmay be spaced apart from each other in the first direction (X-axis direction) or the second direction (Y-axis direction). In addition, the second bonding holes EP2hmay be spaced apart from each other in the second direction (Y-axis direction).

In addition, the second bonding holes EP2hmay be positioned between the adjacent first bonding holes EP1h. For example, the second bonding holes EP2hand the first bonding holes EP1hmay be disposed on the first bisector LX1. In addition, the first bonding holes EP1hmay also be disposed on the second bisector LX2. Accordingly, in the first camera actuator according to the embodiment, a force applied by the elastic member EE may be uniformly provided to the mover.

In addition, as an amount of a current provided to the first coil is adjusted, X-axis tilting may be performed. That is, since the position of the mover is restored to the initial position by the elastic member EE after driving, the X-axis tilting can be easily performed using only the current applied to the first coil. Accordingly, an energy efficiency of the camera module according to the embodiment can be greatly improved, and the camera module can be easily driven.

In the embodiment, the connecting parts CP may include a first connecting part CP1, a second connecting part CP2, a third connecting part CP3, and a fourth connecting part CP4, which are positioned between the first bonding part EP1and the second bonding part EP2.

The first connecting part CP1, the second connecting part CP2, the third connecting part CP3, and the fourth connecting part CP4may be respectively disposed in first to fourth quadrant regions S1to S4that are divided by the first bisector LX1and the second bisector LX2.

The first connecting part CP1, the second connecting part CP2, the third connecting part CP3, and the fourth connecting part CP4may be sequentially disposed from the first bonding part EP1to the second bonding part EP2clockwise or counter-clockwise. Hereinafter, the present invention will be described based on a counter-clockwise direction. For example, the first connecting part CP1, the second connecting part CP2, the third connecting part CP3, and the fourth connecting part CP4may be respectively positioned in the first quadrant region S1, the second quadrant region S2, the third quadrant region S3, and the fourth quadrant region S4that are divided by the first bisector LX1and the second bisector LX2. The first quadrant region S1to the fourth quadrant region S4are positioned counter-clockwise.

In addition, each of the first connecting part CP1, the second connecting part CP2, the third connecting part CP3, and the fourth connecting part CP4may have a bent shape or the like between the first bonding part EP1and the second bonding part EP2.

Particularly, the first connecting part CP1, the second connecting part CP2, the third connecting part CP3, and the fourth connecting part CP4according to the embodiment may be disposed counter-clockwise and have the same shape. In other words, the first connecting part CP1and the third connecting part CP3may be symmetrical with respect to the first bisector LX1and the second bisector LX2. In addition, the second connecting part CP2and the fourth connecting part CP4may be symmetrical with respect to the first bisector LX1and the second bisector LX2. By using such a structure, the linearity of a restoring force against X-axis tilting or Y-axis tilting can be improved. For example, when the first connecting part CP1to the fourth connecting part CP4are symmetrical with respect to only any one of the first bisector LX1and the second bisector LX2, a restoring force against X/Y-axis tilting may be unbalanced in one direction. However, in the camera actuator according to the embodiment, since the connecting parts are symmetrical with respect to the first bisector LX1and the second bisector LX2, such unbalance can be solved.

In the embodiment, the first bonding part EP1may include a first bonding point P1to a fourth bonding point P4in contact with the connecting parts CP. In addition, the second bonding part EP2may include a fifth bonding point P5to an eighth bonding point P5in contact with the connecting parts CP.

The first connecting part CP1may be in contact with the first bonding point P1of the first bonding part EP1and the fifth bonding point P5of the second bonding part EP2. In addition, the second connecting part CP2may be in contact with the second bonding point P2of the first bonding part EP1and the sixth bonding point P6of the second bonding part EP2. In addition, the third connecting part CP3may be in contact with the third bonding point P3of the first bonding part EP1and the seventh bonding point P7of the second bonding part EP2. In addition, the fourth connecting part CP4may be in contact with the fourth bonding point P1of the first bonding part EP1and the eighth bonding point P8of the second bonding part EP2.

In addition, the first bonding point P1, the fifth bonding point P5, the third bonding point P3, and the seventh bonding point P7may be disposed on a first virtual line DL1passing through the intersection point CK. In addition, the second bonding point P2, the sixth bonding point P6, the fourth bonding point P4, and the eighth bonding point P8may be disposed on a second virtual line DL2passing through the intersection point CK.

In addition, the first connecting part CP1may have a structure which extends inward from the first bonding point P1, is bent downward from the first virtual line DL1, extends inward, and protrudes toward a lower portion of the first virtual line DL1. In addition, the first connecting part CP1may have the structure which extends upward from the first virtual line DL1, is bent, and protrudes toward the first virtual line DL1. In addition, the first connecting part CP1may have the structure which extends downward from the first virtual line DL1, is bent, and protrudes toward the lower portion the first virtual line DL1and may be in contact with the fifth bonding point P5of the bonding part EP2.

The second connecting part CP2may have a structure which extends inward from the second bonding point P2, is bent upward from the second virtual line DL2, extends inward, and protrudes downward to the second virtual line DL2. In addition, the second connecting part CP2may have the structure which extends downward from the second virtual line DL2, is bent, and protrudes toward a lower portion of the second virtual line DL2, may have the structure which extends upward from the second virtual line DL2, is bent, and protrudes toward an upper portion of the second virtual line DL2, and may be in contact with the sixth bonding point P6of the second bonding part EP2.

The third connecting part CP3may have a structure which extends inward from the third bonding point P3, is bent upward from the first virtual line DL1, extends inward, and protrudes downward to the first virtual line DL1. In addition, the third connecting part CP3may have the structure which extends downward from the first virtual line DL1, is bent, and protrudes toward the lower portion of the first virtual line DL1, and may have the structure which extends upward from the first virtual line DL1, is bent, and protrudes toward an upper portion of the first virtual line DL1, and may be in contact with the seventh bonding point P7of the second bonding part EP2.

The fourth connecting part CP4may have a structure which extends inward from the fourth bonding point P4, is bent downward from the second virtual line DL2, extends inward, and protrudes toward the lower portion of the second virtual line DL2. In addition, the fourth connecting part CP4may have the structure which extends upward from the second virtual line DL2, is bent, and protrudes toward the upper portion of the second virtual line DL2. In addition, the fourth connecting part CP4may have the structure which extends downward from the second virtual line DL2, is bent, and protrudes toward the lower portion of the second virtual line DL2and may be in contact with the eighth bonding point P8of the second bonding part EP2.

Referring toFIGS.9D and9E, in the first camera actuator according to the embodiment, the second bonding part EP2may overlap the first protruding portions PR1in the second axis or in the first direction.

In addition, in a base which will be described below, the top points of the first protruding portions PR1may be disposed on an intermediate axis (corresponding to the second bisector LX2) which bisects the plurality of second bonding holes EP2h. By using such a structure, when second axis tilting is performed by the first protruding portions PR1, a force applied to the tilting guide unit by the elastic member EE may be uniformly generated with respect to the second axis or the first direction.

In addition, the top point of the second protruding portion PR2may be positioned on the first bisector LX1. That is, the top point of the second protruding portion PR2may be disposed on the first bisector LX1which bisects the first bonding holes EP1h. Accordingly, in the camera actuator according to the embodiment, a force pressed by the elastic member EE may be uniformly provided to both an upper portion and a lower portion of the mover.

FIG.10Ais a perspective view illustrating the tilting guide unit of the first camera actuator according to the embodiment,FIG.10Bis a perspective view illustrating the tilting guide unit in a direction different from a direction inFIG.10A, andFIG.10Cis a cross-sectional view along line FF′ in10A.

The tilting guide unit1141according to the embodiment may include a base BS, the first protruding portions PR1protruding from a first surface1141aof the base BS, and the second protruding portions PR2protruding from a second surface1141bof the base BS. In addition, the surfaces on which the first protruding portions and the second protruding portions are formed may be opposite according to the structure, but the present invention will be described with reference to the drawings hereinafter. In addition, the first protruding portions PR1and the second protruding portions PR2may be integrally formed with the base BS, and like the drawings, it should be understood that the first protruding portions PR1and the second protruding portions RP2may have a spherical shape like a ball.

First, the base BS may include the first surface1141aand the second surface1141bopposite to the first surface1141a. That is, the first surface1141amay be spaced apart from the second surface1141bin the third direction (Z-axis direction), and the first surface1141aand the second surface1141bmay be outer side surfaces which are opposite to or face each other in the tilting guide unit1141.

The tilting guide unit1141may include the first protruding portions PR1extending from the first surface1141atoward one side. According to the embodiment, the first protruding portions PR1may protrude from the first surface1141atoward the holder. The plurality of first protruding portions PR1may include a 1-1 protruding portion PR1aand a 1-2 protruding portion PR1b.

The 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be positioned in parallel in the first direction (X-axis direction). In other words, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay overlap in the first direction (X-axis direction). In addition, in the embodiment, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be bisected by a virtual line extending in the first direction (X-axis direction).

In addition, each of the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay have a curvature and, for example, a hemispherical shape. In addition, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be in contact with first grooves of the housing at a point spaced farthest from the first surface1141aof the base BS.

In addition, an alignment groove1141aamay be positioned in the first surface1141a. The alignment groove1141aamay be disposed at one side in the first surface1141aand may provide an assembly position or assembly direction of the tilting guide unit1141when an assembly process is performed.

In addition, the tilting guide unit1141may include the second protruding portions PR2extending on the second surface1141atoward one side. According to the embodiment, the second protruding portions PR2may protrude from the second surface1141btoward the housing. In addition, the second protruding portion PR2is provided as the plurality of second protruding portions PR2and may include a 2-1 protruding portion PR2aand a 2-2 protruding portion PR2bin the embodiment.

The 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be positioned in parallel in the second direction (Y-axis direction). That is, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay overlap in the second direction (Y-axis direction). In addition, in the embodiment, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be bisected by a virtual line extending in the second direction (Y-axis direction).

Each of the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay have a curvature and, for example, a hemispherical shape. In addition, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be in contact with the second member1131aat a point spaced apart from the second surface1141bof the base BS.

The 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be positioned in a region between the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bin the second direction. According to the embodiment, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be positioned in a central region of a separation space between the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bin the second direction. By using such a structure, the actuator according to the embodiment may allow an angle of an X-axis tilt to have the same range about the X-axis. In other words, the tilting guide unit1141may allow the holder to provide the same range (for example, a plus/minus range), within which X-axis tilting may be performed, about the X-axis based on the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1b.

In addition, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be positioned in a region between the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bin the first direction. According to the embodiment, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be positioned in a central portion of a separation space between the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bin the first direction. By using such a structure, the actuator according to the embodiment may allow an angle of a Y-axis tilt to have the same range about the Y-axis. In other words, the tilting guide unit1141and the holder may provide the same range (for example, a plus/minus range) within which Y-axis tilting is performed about the Y-axis based on the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2b.

Specifically, the first surface1141amay include a first outer side line M1, a second outer side line M2, a third outer side line M3, and a fourth outer side line M4. The first outer side line M1and the second outer side line M2may face each other, and the third outer side line M3and the fourth outer side line M4may face each other. In addition, the third outer side line M3and the fourth outer side line M4may be positioned between the first outer side line M1and the second outer side line M2. In addition, the first outer side line M1and the second outer side line M2are perpendicular to the first direction (X-axis direction), and the third outer side line M3and the fourth outer side line M4may be in parallel in the first direction (X-axis direction).

In this case, the first protruding portions PR1may be positioned on a first virtual line VL1. In this case, the first virtual line LV1is a line which bisects the first outer side line M1and the second outer side line M2. Alternatively, first and third virtual lines LV1and LV1′ are lines which bisect the base BS in the second direction (Y-axis direction). Accordingly, the tilting guide unit1141may easily perform X-axis tilting using the first protruding portions PR1. In addition, since the tilting guide unit1141performs the X-axis tilting about the first virtual line VL1, a rotational force may be uniformly applied to the tilting guide unit1141. Accordingly, the X-axis tilting can be delicately performed, and the reliability of the element can be improved.

In addition, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be symmetrically disposed with respect to the first virtual line VL1and the second virtual line VL2. Alternatively, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be symmetrically positioned with respect to a first central point C1. By using such a structure, when X-axis tilting is performed, a support force supported by the first protruding portions PR1may be uniformly applied to an upper side and a lower side with respect to the second virtual line VL2. Accordingly, the reliability of the tilting guide unit can be improved. In this case, the second virtual line VL2is a line which bisects the third outer side line M3and the fourth outer side line M4. Alternatively, second and fourth virtual lines LV2and LV2′ are lines which bisect the base BS in the first direction (X-axis direction).

In addition, the first central point C1may be an intersection point of the first virtual line VL1and the second virtual line VL2. Alternatively, the first central point C1may be a point corresponding to a center of gravity according to a shape of the tilting guide unit1141.

In addition, the second surface1141bmay include a fifth outer side line M1′, a sixth outer side line M2′, a seventh outer side line M3′, and an eighth outer side line M4′. The fifth outer side line M1′ and the sixth outer side line M2′ may face each other, and the seventh outer side line M3′ and the eighth outer side line M4′ may face each other. In addition, the seventh outer side line M3′ and the eighth outer side line M4′ may be positioned between the fifth outer side line M1′ and the sixth outer side line M2′. In addition, the fifth outer side line M1′ and the sixth outer side line M2′ are perpendicular to the first direction (X-axis direction), and the seventh outer side line M3′ and the eighth outer side line M4′ may be in parallel in the first direction (X-axis direction).

In addition, since the tilting guide unit1141performs Y-axis tilting about the fourth virtual line VL2′, a rotational force can be uniformly applied to the tilting guide unit1141. Accordingly, the Y-axis tilting can be delicately performed, and the reliability of the element can be improved.

In addition, the 2-1 protruding portion PR2aand 2-2 protruding portion PR2bmay be disposed on the fourth virtual line VL2′ to be symmetrical with respect to the third virtual line VL1′. Alternatively, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be symmetrically positioned with respect to a second central point C1′. By using such a structure, when the Y-axis tilting is performed, the same support force supported by the second protruding portions PR2can be applied to an upper side and a lower side of the tilting guide unit with respect to the fourth virtual line VL2′. Accordingly, the reliability of the tilting guide unit can be improved. In this case, the third virtual line LV1′ is a line which bisects the fifth outer side line M1′ and the sixth outer side line M2′. In addition, the second central point C1′ may be an intersection point of the third virtual line VL1′ and the fourth virtual line VL2′. Alternatively, the second central point C1′ may also be a point corresponding to the center of gravity according to the shape of the tilting guide unit1141.

In addition, a distance DR2between the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bin the first direction (X-axis direction) may be greater than a length of each of the second protruding portions PR2in the first direction (X-axis direction). Accordingly, when X-axis tilting is performed based on the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1b, a resistance due to the second protruding portions PR2can be minimized.

In correspondence to this, a distance ML2between the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bin the second direction (Y-axis direction) may be greater than a length of each of the first protruding portions PR1in the second direction (Y-axis direction). Accordingly, when the Y-axis tilting is performed based on the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2b, a resistance due to the first protruding portions PR1can be minimized.

FIG.11is a view illustrating the first driving unit of the first camera actuator according to the embodiment.

Referring toFIG.11, the first driving unit1150may include the driving magnets1151, the driving coils1152, the Hall sensor units1153, the first substrate part1154, and the yoke parts1155.

In addition, as described above, the driving magnets1151may include the first magnet1151aand the second magnet1151bwhich provide a driving force due to an electromagnetic force. The first magnet1151aand the second magnet1151bmay be positioned on the outer side surfaces of the holder1131.

In addition, as described above, although it is described that the dummy member DM is included in the driving unit1150in the drawings, it should be understood that the dummy member DM may also be a separate member. That is, since the dummy member DM is not disposed opposite to a coil, an electromagnetic force is not generated, and thus the dummy member DM is not a driving source which generates a driving force for performing tilting with respect to a predetermined direction, for example, Y-axis tilting. However, the dummy member DM may be seated on the outer side surface of the holder and symmetrically positioned with the first magnet1151ain the first direction or the second direction. In addition, a weight of the dummy member DM may be the same as a weight of the first magnet1151a. Accordingly, the dummy member DM may compensate for the weight of the first magnet1151ain the holder and inhibit the weight from being concentrated on the first magnet1151awhen the holder rotates in the second direction (Y-axis direction). In other words, the dummy member DM may improve accuracy of a Y-axis tilt of the holder1131. In addition, due to the dummy member DM, since a coil is not disposed at a position symmetrical with a first coil1152ain the first direction and the second direction, a current efficiency for the Y-axis tilt can be improved. In addition, since a total weight of the first camera actuator according to the embodiment decreases, weight reduction can be achieved.

In addition, the driving coil1152may include a plurality of coils. In the embodiment, the driving coils1152may include the first coil1152aand the second coil1152c.

The first coil1152amay be positioned opposite to the first magnet1151a. Accordingly, as described above, the first coil1152amay be positioned in the first housing hole1121aof the first housing side portion1121.

In addition, since the second housing hole1122aof the second housing side portion1122is open, a weight of the first camera actuator may decrease. The open portion may be positioned opposite to the dummy member DM.

In addition, the first camera actuator according to the embodiment can minimize an occurrence of a decentering or tilting phenomenon to provide best optical characteristics when OIS is performed by controlling the mover1130to rotate about the first axis (X-axis direction) or second axis (Y-axis direction) using an electromagnetic force between the driving magnets1151and the driving coils1152.

In addition, according to the embodiment, a size limitation of the actuator can be solved to provide an ultra-slim and ultra-small camera actuator and a camera module including the same by implementing the OIS using the tilting guide unit1141of the rotation part1140disposed between the first housing1120and the mover1130.

The first substrate part1154may include a first substrate side portion1154a, a second substrate side portion1154b, and a third substrate side portion1154c.

The first substrate side portion1154aand the second substrate side portion1154bmay be disposed to face each other. In addition, the third substrate side portion1154cmay be positioned between the first substrate side portion1154aand the second substrate side portion1154b.

In addition, the first substrate side portion1154amay be positioned between the first housing side portion and the shield can, and the second substrate side portion1154bmay be positioned between the second housing side portion and the shield can. In addition, the third substrate side portion1154cmay be positioned between the third housing side portion and the shield can and may be a lower surface of the first substrate part1154.

The first substrate side portion1154amay be coupled and electrically connected to the first coil1152a. In addition, the first substrate side portion1154amay be coupled and electrically connected to a first Hall sensor1153a.

The second substrate side portion1154bmay be a dummy substrate.

In addition, the third substrate side portion1154cmay be coupled and electrically connected to the second coil1152c. In addition, the third substrate side portion1154cmay be coupled and electrically connected to a second Hall sensor1153b.

Accordingly, in the first camera actuator according to the embodiment, since electrical connection to the second substrate side portion1154bis not required, an electrical path CPH may be formed on only the first substrate side portion1154aand the third substrate side portion1154c. Accordingly, a length for electrical connection can decrease to decrease an electrical resistance. That is, a current efficiency can be improved.

In addition, a driver dR which controls an amount of current applied to the first coil, the second coil, or the like may also be disposed on any one of the first substrate side portion1154aand the third substrate side portion1154b. Accordingly, the electrical path can be minimized to minimize the electrical resistance.

In addition, the yoke parts1155may include a first yoke1155aand a second yoke1155b. The first yoke1155amay be positioned in the first seating groove and coupled to the first magnet1151a. In addition, the second yoke1155bmay be positioned in the third seating groove and coupled to the second magnet1151b. In addition, a dummy yoke may be positioned in the second seating groove and coupled to the dummy member DM. The first yoke1155aand the second yoke1155ballow the first magnet1151aand the second magnet1151bto be easily seated in the first seating groove and the third seating groove and to be coupled to the housing.

FIG.12Ais a perspective view illustrating the first camera actuator according to the embodiment, andFIG.12Bis a cross-sectional view along line PP′ inFIG.12A, andFIG.12Cis a cross-sectional view along line QQ′ inFIG.12A.

Referring toFIGS.12A to12C, the first coil1152amay be positioned on the first housing side portion1121, and the first magnet1151amay be positioned on the first holder outer side surface1131S1of the holder1131. Accordingly, the first coil1152aand the first magnet1151amay be positioned opposite to each other. At least a part of the first magnet1151amay overlap the first coil1152ain the second direction (Y-axis direction).

In addition, the dummy member DM may be positioned on the second holder outer side surface1131S2of the holder1131. In addition, the first magnet1151aand the dummy member DM may overlap in the second direction (Y-axis direction).

X-axis tilting can be performed by an electromagnetic force applied to the outer side surface (the first holder outer side surface) of the holder by the first magnet1151aand the first coil1152a.

In addition, the second protruding portions PR2aand PR2bof the tilting guide unit1141may be in contact with the first member1126of the first housing1120. The second protruding portions PR2may be seated in the second protrusion grooves PH2formed in one side surface of the first member1126. In addition, when X-axis tilting is performed, the second protruding portions PR2aand PR2bmay serve as reference axes (or rotation axes) of a tilt. Accordingly, the tilting guide unit1141and the mover1130may move in the second direction.

In addition, as described above, the first Hall sensor1153amay be positioned outside to be electrically connected and coupled to the first substrate part1154. However, the position of the first Hall sensor1153ais not limited thereto.

In addition, the second coil1152bmay be positioned on the third housing side portion1123, and the second magnet1151bmay be positioned on the third holder outer side surface1131S3of the holder1131. The second coil1152band the second magnet1151bmay overlap at least partially in the first direction (X-axis direction). Accordingly, a magnitude of an electromagnetic force between the second coil1152band the second magnet1151bcan be easily controlled.

As described above, the tilting guide unit1141may be positioned on the fourth holder outer side surface1131S4of the holder1131. In addition, the tilting guide unit1141may be seated in the fourth seating groove1131S4ain the fourth holder outer side surface. As described above, the fourth seating groove1131S4amay include the first region AR1, the second region AR2, and the third region AR3which are described above.

The second member1131amay be disposed in the first region AR1, and the second member1131amay include the first grooves gr1formed in the inner side surface.

The first member1126may be disposed in the second region AR2. The first member1126may include the second groove gr2facing the first groove gr1. In addition, the first member1126may include the second protrusion grooves PH2disposed in a surface corresponding to the second groove gr2.

A repulsive force may be generated by the magnetic members having the same polarity, which are disposed in the first groove gr1and the second groove gr2. The above-described content may be equally applied to the repulsive force. The tilting guide unit1141may be disposed in the third region AR3. As described above, the tilting guide unit1141may include the first protruding portions PR1and the second protruding portions PR2. In this case, the first protruding portions PR1and the second protruding portions PR2may be respectively disposed on the second surface1141band the first surface1141aof the base BS. As described above, in another embodiment which will be described below, first protruding portions PR1and second protruding portions PR2may be variously positioned on facing surfaces of a base BS.

The first protrusion grooves PH1may be positioned in the fourth seating groove1131S4a. In addition, the first protruding portions PR1of the tilting guide unit1141may be accommodated in the first protrusion grooves PH1. Accordingly, the first protruding portions PR1may be in contact with the first protrusion grooves PH1. The maximum diameter of the first protrusion groove PH1may correspond to the maximum diameter of the first protruding portion PR1. This may be equally applied to the second protrusion groove PH2and the second protruding portion PR2. That is, the maximum diameter of the second protrusion groove PH2may correspond to the maximum diameter of the second protruding portion PR2. In addition, accordingly, the second protruding portions PR2may be in contact with the second protrusion grooves PH2. By using such a structure, first axis tilting can be easily performed based on the first protruding portions PR1, second axis tilting can be easily performed based on the second protruding portions PR2, and radii of a tilt can be extended.

In addition, the tilting guide unit1141may be disposed parallel to the second member1131aand the first member1126in the third direction (Z-axis direction), and the tilting guide unit1141may overlap the optical member1132in the first direction (X-axis direction). More specifically, in the embodiment, the first protruding portion PR1may overlap the optical member1132in the first direction (X-axis direction). In addition, at least a part of the first protruding portion PR1may overlap the second coil1152bor the second magnet1151bin the first direction (X-axis direction). That is, in the camera actuator according to the embodiment, the protruding portions which are central axes of a tilt may be positioned adjacent to the center of gravity of the mover1130. Accordingly, the tilting guide unit may be positioned adjacent to a center of gravity of the holder. Accordingly, in the camera actuator according to the embodiment, a moment value for tilting the holder can be minimized, and a consumption amount of current applied to a coil part and the like in order to tilt the holder can be minimized, and thus a power consumption amount can be decreased, and the reliability of the element can be improved.

In addition, as described above, the second Hall sensor1153bpositioned inside the second coil1152bmay detect a change in magnetic flux, and thus position detection between the second magnet1151band the second Hall sensor1153bmay be performed.

In the first camera actuator according to the embodiment, the elastic member EE, the second member1131a, the first member1126, the tilting guide unit1141, and the holder1131may be sequentially disposed in the third direction.

In addition, according to the embodiment, a partial region of the tilting guide unit1141may be positioned further outward than the fourth holder outer side surface of the holder1131.

The tilting guide unit1141excluding the first protruding portions PR1and the second protruding portions PR2may be seated in the fourth seating groove1131S4abased on the base BS. In other words, a length of the base BS in the third direction (Z-axis direction) may be smaller than a length of the fourth seating groove1131S4ain the third direction (Z-axis direction). By using such a structure, miniaturization can be easily achieved.

In addition, a maximum length of the tilting guide unit1141in the third direction (Z-axis direction) may be greater than the length of the fourth seating groove1131S4ain the third direction (Z-axis direction). Accordingly, as described above, an end of the second protruding portion PR2may be positioned between the fourth holder outer side surface and the first member1126. That is, at least a port of the second protruding portion PR2may be positioned in a direction opposite to the holder1131in the third direction (Z-axis direction). In other words, the holder1131may be spaced a predetermined distance from an end of the second protruding portion PR2(a portion in contact with the second protrusion groove) in the in the third direction (Z-axis direction).

In addition, a front surface1131aesof the second member1131aaccording to the embodiment may be spaced apart from a front surface1126esof the first member1126.

Particularly, the front surface1131aesof the second member1131aaccording to the embodiment may be positioned on the front surface1126esof the first member1126in the third direction (Z-axis direction). Alternatively, the front surface1131aesof the second member1131aaccording to the embodiment may be positioned inside the front surface1126esof the first member1126. To this end, the first member1126may have a structure which extends and is bent inward. In addition, a partial region of the second member1131amay be positioned in a groove formed by a structure of the first member1126which extends and is bent.

By using such a structure, since the second member1131ais positioned inside the first member1126, a spatial efficiency can be improved, and miniaturization can be achieved. In addition, even when driving (tilting or rotation of the mover1130) by an electromagnetic force is performed, since the second member1131adoes not protrude further outward than the first member1126, contact with a surrounding element can be blocked. Accordingly, the reliability can be improved.

FIG.13Ais a perspective view illustrating the first camera actuator according to the embodiment,FIG.13Bis a cross-sectional view along line SS' inFIG.13A, andFIG.13Cis an exemplary view of movement of the first camera actuator illustrated inFIG.13B.

Referring toFIGS.13A to13C, in the first camera actuator according to the embodiment, Y-axis tilting may be performed. That is, rotation may be performed with respect to the first direction (X-axis direction) to implement OIS.

The first coil1152amay be positioned on the first housing side portion1121, and the first magnet1151amay be positioned on the first holder outer side surface1131S1of the holder1131. Accordingly, the first coil1152aand the first magnet1151amay be positioned opposite to each other. At least a part of the first magnet1151amay overlap the first coil1152ain the second direction (Y-axis direction).

In addition, the dummy member DM may be positioned on the second holder outer side surface1131S2of the holder1131. In addition, the first magnet1151aand the dummy member DM may overlap in the second direction (Y-axis direction).

By using such a structure, a weight of the first magnet1151aand a weight of the dummy member DM are uniformly applied to the holder1131, and thus X-axis tilting can be accurately and precisely performed by an electromagnetic force applied to the outer side surfaces (the first holder outer side surface and the second holder outer side surface) of the holder.

In addition, the second protruding portions PR2aand PR2bof the tilting guide unit1141may be in contact with the first member1126of the housing1120. The second protruding portions PR2may be seated in the second protrusion grooves PH2formed in one side surface of the first member1126. In addition, when the X-axis tilting is performed, the second protruding portions PR2aand PR2bmay be reference axes (or rotation axes) of the tilt. Accordingly, the tilting guide unit1141and the mover1130can vertically move.

In addition, as described above, the first Hall sensor1153amay be positioned outside to be electrically connected and coupled to the substrate part1154. However, the position of the first Hall sensor1153ais not limited thereto.

In addition, the second coil1152bmay be positioned on the third housing side portion1123, and the third magnet1151cmay be positioned on the third holder outer side surface1131S3of the holder1131. The second coil1152band the third magnet1151cmay overlap at least partially in the first direction (X-axis direction). Accordingly, a magnitude of an electromagnetic force between the second coil1152band the third magnet1151ccan be easily controlled.

As described above, the tilting guide unit1141may be positioned on the fourth holder outer side surface1131S4of the holder1131. In addition, the tilting guide unit1141may be seated in the fourth seating groove1131S4aof the fourth holder outer side surface. As described above, the fourth seating groove1131S4amay include the first region AR1, the second region AR2, and the third region AR3which are described above.

The tilting guide unit1141may be disposed on the fourth holder outer side surface of the holder1131. As described above, the tilting guide unit1141may include the first protruding portions PR1and the second protruding portions PR2. In this case, the first protruding portions PR1and the second protruding portions PR2may be respectively disposed on the second surface and the first surface of the base. The first protruding portions PR1and the second protruding portions PR2may be variously positioned on the facing surfaces of the base BS. However, the present invention will be described below with reference to the drawings.

In addition, the first protrusion grooves PH1may be positioned in the holder1131. Particularly, the first protrusion grooves PH1may be positioned in the fourth seating groove1131S4a. In addition, the first protruding portions PR1may be positioned in the first protrusion grooves PH1. Accordingly, at least a part of the first protruding portion PR1may be in contact with the first protrusion groove PH1. In addition, as described above, the top points of the first protruding portions PR1may be positioned on the bisector of the bonding holes of the second bonding part.

In addition, the maximum diameter of the first protrusion groove PH1may correspond to the maximum diameter of the first protruding portion PR1. This may be equally applied to the second protrusion grooves PH2and the second protruding portions PR2. That is, the maximum diameter of the second protrusion groove PH2may correspond to the maximum diameter of the second protruding portion PR2. In addition, accordingly, the second protruding portions PR2may be in contact with the second protrusion grooves PH2. By using such a structure, the second axis tilting can be easily performed based on the first protruding portions PR1, the first axis tilting can be easily performed based on the second protruding portions PR2, and radii of a tilt can be extended.

In addition, the tilting guide unit1141may be disposed parallel to the second member1131aand the first member1126in the third direction (Z-axis direction), and thus the tilting guide unit1141may overlap the optical member1132in the first direction (X-axis direction). More specifically, in the embodiment, the first protruding portion PR1may overlap the optical member1132in the first direction (X-axis direction). In addition, at least a part of the first protruding portion PR1may overlap the second coil1152bor the second magnet1151bin the first direction (X-axis direction). That is, in the camera actuator according to the embodiment, the protruding portions, which are central axes of a tilt, may be positioned adjacent to the center of gravity of the mover1130. Accordingly, the tilting guide unit may be positioned adjacent to the center of gravity of the mover. Accordingly, in the camera actuator according to the embodiment, a moment value for tilting the mover can be minimized, and a consumption amount of current applied to the coil part and the like in order to tilt the mover can be minimized, and thus a power consumption amount can be decreased, and the reliability of the element can be improved.

In addition, as described above, the second Hall sensor1153bpositioned inside the second coil1152bmay detect a change in magnetic flux, and thus position detection between the second magnet1151band the second Hall sensor1153bmay be performed.

In the embodiment, with the second coil1152b, the second magnet1151bdisposed under the holder1131may generate an electromagnetic force to tilt or rotate the mover1130with respect to the second direction (Y-axis direction).

In addition, the first member1126may be disposed in the fourth holder outer side surface of the holder1131. In addition, the second member1131amay be positioned on the first member1126. An outer side surface of the second member1131amay be coupled to the second bonding part EP2of the elastic member EE through the second coupling part PP2. Accordingly, the holder1131may apply a force RF2′ to the tilting guide unit1141in the same direction of a restoring force RF2generated by the elastic member EE.

In addition, the first member1126may include the second protrusion grooves PH2. The second protrusion grooves PH2may be positioned in a surface of the first member1126facing the holder1131.

In addition, the restoring force RF2generated by the elastic member EE may be applied to the first member1126through the above-described path. Accordingly, the restoring forces RF2and RF2′ generated through the elastic member EE may press the tilting guide unit1141disposed between the first member1126and the holder1131.

Specifically, the restoring force of the elastic member EE may be transmitted to the second member1131aand ultimately transmitted to the tilting guide unit1141disposed between the first member1126and the holder1131. Accordingly, the tilting guide unit1141may be pressed by the mover1130and the housing1120using the above-described restoring force.

In addition, the second protruding portions PR2may be supported by the first member1126. In this case, in the embodiment, the tilting guide unit1141may rotate or tilt about the second protruding portions PR2, which are reference axes (or rotation axes) and protrude toward the first member1126, that is, may rotate or tilt about the second direction (Y-axis direction). In other words, the tilting guide unit1141may rotate or tilt about the second protruding portions PR2, which are the reference axes (or rotation axes) and protrude toward the first member1126, that is, may rotate or tilt with respect to the first direction (X-axis direction).

For example, while the mover1130is rotated (X1→X1a) a first angle θ1with respect to the X-axis direction by first electromagnetic forces F1A and F1B between the second magnet1151bdisposed in the third seating groove and the second coil part1152bdisposed on the third substrate side portion, OIS may be performed. In addition, while the mover1130is rotated (X1→X1b) a first angle θ1with respect to the X-axis direction by the first electromagnetic forces F1A and F1B between the second magnet1151bdisposed in the third seating groove and the second coil part1152bdisposed on the third substrate side portion, OIS may be performed. The first angle θ1may be in the range of ±1° to ±3°. However, the present invention is not limited thereto.

FIG.14Ais a cross-sectional view along line RR′ inFIG.13A, andFIG.14Bis an exemplary view of movement of the first camera actuator illustrated inFIG.14A.

Referring toFIGS.14A and14B, X-axis tilting may be performed. That is, while the mover1130tilts or rotates with respect to the Y-axis direction, OIS can be implemented.

In the embodiment, the first magnet1151adisposed in the holder1131and the first coil1152amay generate an electromagnetic force and tilt or rotate the tilting guide unit1141and the mover1130with respect to the first direction (X-axis direction).

Specifically, a restoring force of the elastic member EE may be transmitted to the second member1131aand the holder1131and ultimately transmitted to the tilting guide unit1141disposed between the holder1131and the first member1126. Accordingly, the tilting guide unit1141may be pressed by the mover1130and the housing1120using the above-described restoring force.

In addition, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be spaced apart from each other in the first direction (X-axis direction) and supported by the first protrusion grooves PH1formed in the fourth seating groove1131S4aof the holder1131. In addition, in the embodiment, the tilting guide unit1141may rotate or tilt about the first protruding portions PR1, which are reference axes (or rotation axes) and protrude toward the holder1131(for example, in the third direction), that is, may rotate or tilt about the first direction (X-axis direction).

For example, while the mover1130is rotated (Y1→Y1a) by a second angle θ2with respect to the Y-axis direction by second electromagnetic forces F2A and F2B between the first magnet1151adisposed in the first seating groove and the first coil part1152adisposed on the first substrate side portion, OIS can be implemented. In addition, while the mover1130is rotated (Y1→Y1b) by a second angle θ2with respect to the Y-axis direction by the second electromagnetic forces F2A and F2B between the first magnet1151adisposed in the first seating groove and the first coil part1152adisposed on the first substrate side portion, OIS can be implemented. The second angle θ2may be in the range of ±1° to 3°. However, the present invention is not limited thereto.

As described above, the first actuator according to the embodiment can minimize a decentering or tilting phenomenon to provide best optical properties when OIS is implemented by controlling the mover1130to rotate about the first direction (X-axis direction) or the second direction (Y-axis direction) using an electromagnetic force between the driving magnet in the holder and the driving coil disposed in the housing. In addition, as described above, the term “Y-axis tilting” refers to rotation or tilting with respect to the first direction (X-axis direction), and the term “X-axis tilting” refers to rotation or tilting with respect to the second direction (Y-axis direction).

FIG.15is a view for describing an assembly order of the first camera actuator according to the embodiment.

Referring toFIG.15, a method of assembling the first camera actuator according to the embodiment may include coupling the first to second coils and the first substrate part to the first housing, coupling the first mover1130, the tilting guide unit1141, the first member1126, the second member1131a, and the elastic member EE to the first housing, and inserting the mover1130, the tilting guide unit1141, the first member1126, and the second member1131a, which are coupled, into the first housing1120.

In the embodiment, after the coupling of the first to second coils and the first substrate part to the first housing, the inserting of the mover1130, the tilting guide unit1141, the first member1126, the second member1131a, and the elastic member EE, which are coupled, into the first housing1120may be performed. Accordingly, an influence of a tolerance or foreign material, which is generated while the first coil and the first substrate part are coupled to the first housing, on the optical member or the holder may be minimized. Accordingly, driving accuracy of the first camera actuator can be improved.

In addition, since the mover1130, the tilting guide unit1141, the first member1126, and the second member1131a, which are coupled, are inserted into the first housing1120in, for example, the third direction (Z-axis direction), an impact on the mover1130, the tilting guide unit1141, the first member1126, and the second member1131a, which are coupled, can be minimized when compared to a case of being vertically inserted into the first housing1120.

In addition, the sum of a length ka of a central portion (corresponding to the tilting guide unit, overlapping the tilting guide unit in the third direction, or corresponding to a “connecting member” between the first through hole and the second through hole) of the first member1126in the third direction (Z-axis direction) and a length kb of the member base portion of the second member1131ain the third direction (Z-axis direction) may be smaller than or equal to a length kc of a vertical frame (corresponding to the upper member and the lower member) connected to a central portion of the first member1126in the third direction (Z-axis direction). By using such a structure, as described above, even when the second member1131atilts or rotates, the second member1131amay not protrude further outward than the outer side surface of the first member1126.

In addition, as described above, the first member1126may be coupled to the first housing1120to form one housing. For example, the one housing may include a 1-2 housing and a 1-1 housing11200which form the first member.

FIG.16is an exploded perspective view illustrating a first camera actuator according to another embodiment,FIG.17is a perspective view illustrating a housing according to another embodiment, andFIG.18is a view illustrating the housing according to another embodiment.

Referring toFIGS.16to18, a first camera actuator1200according to another embodiment includes a shield can1210, a housing1220, a mover1230, a rotation part1240, an elastic member EE, a driving unit1250, a first member1231a, and a second member1226. The content of all the above-described components (the shield can, the housing, the mover, the rotation part, the elastic member, the driving unit, the first member, and the second member) of the first camera actuator according to the embodiment may be equally applied to the content of a structure excluding an elastic member EE which will be described below. That is, even in a different content in addition to the redundant content, the content of the above-described camera actuator according to the embodiment may be equally applied thereto, excluding, for example, a structure of the elastic member EE and a structure of the housing1220or a structure of the mover1230which are changed according to the structure of the elastic member EE.

The mover1230may include a holder1231and an optical member1232seated in the holder1231. In addition, the rotation part1240may include a tilting guide unit1241. In addition, the driving unit1250includes driving magnets1251, driving coils1252, Hall sensor units1253, a substrate part1254, and yoke parts1255.

The shield can1210may be positioned at an outermost side of the first camera actuator1200to surround the rotation part1240, the driving unit1250, the housing1220, and the like which will be described below.

The shield can1210may block or reduce electromagnetic waves generated from the outside. That is, the shield can1210may reduce an occurrence of a malfunction of the rotation part1240or the driving unit1250.

The housing1220may be positioned in the shield can1210. In addition, the housing1220may be positioned inside the substrate part1254which will be described below. The housing1220may be fastened to the shield can1210by being fitted to or engaged with each other.

The housing1220may include a first housing side portion1221, a second housing side portion1222, a third housing side portion1223, and a fourth housing side portion1224.

The first housing side portion1221and the second housing side portion1222may be disposed to face each other. In addition, the third housing side portion1223and the fourth housing side portion1224may be disposed between the first housing side portion1221and the second housing side portion1222.

The third housing side portion1223may be in contact with the first housing side portion1221, and the second housing side portion1222. In addition, the third housing side portion1223may have a lower surface in the housing1220. In addition, the first housing side portion1221, the second housing side portion1222, and the fourth housing side portion1224may have side surfaces.

In this case, the lower surface refers to one side in a first direction. In addition, the first direction may be an X-axis direction in the drawings and may be interchangeably used with a second axis direction or the like. A second direction may be a Y-axis direction in the drawings and may be interchangeably used with a first axis direction or the like. The second direction is a direction perpendicular to the first direction. In addition, a third direction may be a Z-axis direction in the drawings and may be interchangeably used with a third axis direction or the like. The third direction is a direction perpendicular to both the first direction and the second direction. In this case, the third direction (Z-axis direction) may correspond to a direction of an optical axis (for light reflected by an optical member and moved), the first direction (X-axis direction) and the second direction (Y-axis direction) may be directions perpendicular to the optical axis, and tilting may be performed by the first camera actuator. Details thereof will be described below.

In addition, the first housing side portion1221may include a first housing hole1221a. A first coil1252a, which will be described below, may be positioned in the first housing hole1221a.

In addition, the second housing side portion1222may include a second housing hole1222a. In addition, a second coil1252b, which will be described below, may be positioned in the second housing hole1222a.

The first coil1252aand the second coil1252bmay be coupled to the substrate part1254. In the embodiment, the first coil1252aand the second coil1252bmay be electrically connected to the substrate part1254, and a current may flow through the first coil1252aand the second coil1252b. The current is a factor of an electromagnetic force by which the first camera actuator may perform tilting about an X-axis.

In addition, the third housing side portion1223may include a third housing hole1223aand a housing groove1223b′.

A third coil1252c, which will be described below, may be positioned in the third housing hole1223a. The third coil1252cmay be coupled to the substrate part1254. In addition, the third coil1252cmay be electrically connected to the substrate part1254, and a current may flow through the third coil1252c. The current is a factor of an electromagnetic force by which the first camera actuator may perform tilting about a Y-axis.

The second member1226, which will be described below, may be seated in the housing groove1223b′. The housing groove1223b′ may be formed to extend from the third housing side portion1223along the first housing side portion1221and the second housing side portion1222. That is, the housing groove1223b′ may be positioned in the first housing side portion1221, the second housing side portion1222, and the third housing side portion1223. Accordingly, the second member1226may be coupled to the first housing side portion1221, the second housing side portion1222, and the third housing side portion1223. Like a camera actuator according to a second embodiment, the second member1226may be seated in the housing groove formed by a protrusion and the like and coupled to the housing1220. The second member1226may be coupled to the housing1220according to the above-described content. However, due to the coupling through the housing groove, the mover1230, the tilting guide unit1241, the second member1226, and the first member1231a, which will be described below, may be sequentially stacked on the fourth housing side portion1224. Accordingly, ease of assembly can be improved. Alternatively, the second member1226may also be integrally formed with the housing1220.

Accordingly, a camera module according to another embodiment may include a fixed member, and the fixed member may be a component which does not move when a camera actuator performs one axis tilting or two axis tilting. In the embodiment, the fixed member may include at least one of the housing1220and the second member1226. In the present specification, the present invention will be described based on this. The elastic member EE may be positioned between the mover1230and the fixed member. In addition, the tilting guide unit1241may be positioned between the fixed member and the mover. In addition, the elastic member EE may bring the tilting guide unit1241into close contact with the fixed member and the mover by pulling the mover1230to the fixed member. In addition, the elastic member EE may bring the tilting guide unit1241into close contact with the mover1230. In other words, the elastic member EE may pull the mover1230toward the housing1220or the second member1226which is the fixed member. Such a structure will be described below.

In addition, the fourth housing side portion1224may be disposed between the first housing side portion1221and the second housing side portion1222and may be in contact with the first housing side portion1221, the second housing side portion1222, and the third housing side portion1223.

The fourth housing side portion1224may be in contact with the first camera actuator connected to another first camera actuator. Accordingly, the fourth housing side portion1224may include a protrusion, a groove, or a plurality of grooves formed in a housing outer side surface1224b. Accordingly, the fourth housing side portion may allow ease coupling with another adjacent camera actuator. That is, in the first camera actuator, a coupling force between the first camera actuators can be further increased through the fourth housing side portion1224. In addition, by using such a structure, the fourth housing side portion may provide an optical path, increase the coupling force with another component, suppress movement of an opening due to separation or the like, and thus minimize a change in the optical path.

In addition, the fourth housing side portion1224may include an open region1224a. Light of which a path is changed by the optical member of the first camera actuator may move to the first camera actuator through the open region1224a. As described above, the first camera actuator may perform AF and/or zoom, and the first camera actuator may perform OIS.

In addition, the housing1220may include an accommodation portion1225formed by the first housing side portion1221to the fourth housing side portion1224. The second member1226, the first member1231a, the tilting guide unit1241, the mover1230, and the elastic member EE may be positioned in the accommodation portion1225as components.

The second member1226may be disposed in the housing1220. The second member1226may be disposed or included in the housing. In addition, the second member1226may be coupled to the housing1220. In the embodiment, the second member1226may be seated in the housing groove1223b′ formed in the third housing side portion1223or may pass through at least a part of the housing groove1223b′ to be coupled to the third housing side portion1223. Therefore, the second member1226may be coupled to the housing1220and may maintain fixation between the mover1230and the tilting guide unit1241which will be described below.

In addition, the second member1226may include the first housing side portion1221and first coupling parts PP1disposed in a region adjacent to the second housing side portion1221. The first coupling parts PP1may be formed as protrusions. In addition, the first coupling parts PP1may be coupled to first bonding parts EP1. As will be described below, the first coupling parts PP1may be inserted into first bonding holes of the first bonding parts EP1.

In addition, the second member1226includes second protrusion grooves PH2in which second protrusions of the tilting guide unit are seated. Accordingly, the second member1226allows protrusions of the tilting guide unit to be disposed adjacent to the optical member in a fourth seating groove. Accordingly, the protrusions which are reference axes of a tilt may be disposed close to a center of gravity of the mover1230. Accordingly, when the tilting is performed, since a moment of moving the mover1230for the tilting is minimized, consumption of a current for driving a coil can also be minimized to reduce power consumption.

In addition, as described above, the second member1226may be integrally formed with the housing1220or separately formed from the housing1220. In the case of being integrally formed, a coupling force of the second member1226and the housing1220may increase, and thus the reliability of the camera actuator can be improved. In addition, in the case of being separately formed, ease of assembly and manufacturing of the second member1226and the housing1220can be improved. Hereinafter, the present invention will be described based on the case of being separately formed.

The mover1230includes the holder1231and the optical member1232seated in the holder1231.

First, the holder1231may be seated in the accommodation portion1225of the housing1220. The holder1231may include a first holder outer side surface to a fourth holder outer side surface corresponding to the first housing side portion1221, the second housing side portion1222, the third housing side portion1223, and the fourth housing side portion1224, respectively. In addition, the holder1231may include a first member1231adisposed in a fourth seating groove1231S4a. Details thereof will be described below.

The optical member1232may be seated in the holder1231. To this end, the holder1231may have a seating surface, and the seating surface may be formed by an accommodation groove. In the embodiment, the optical member1232may be formed as a mirror. Hereinafter, although the optical member1232will be described based on the mirror, the optical member1232may also be formed as a plurality of lenses like the above-described embodiment. For example, the optical member1232may include a reflecting part disposed therein. However, the present invention is not limited thereto. In addition, the optical member1232may reflect light reflected from the outside (for example, by an object) into the camera module. In other words, the optical member1232may change a path of reflected light to improve the first camera actuator and solve a spatial limitation of the first camera actuator. Accordingly, it should be understood that the camera module may also extend an optical path to provide a wide range of magnification while minimizing a thickness.

In addition, the first member1231amay be coupled to the holder1231. The first member1231amay be in contact with a protruding portion positioned in a region excluding the fourth seating groove in the fourth holder outer side surface in the holder1231. The first member1231amay be integrally formed with the holder1231. Alternatively, the first member1231amay be formed as a structure separated from the holder1231. Even when the first member1231aand the holder1231are integrally coupled, the fourth seating groove may be positioned in the holder1231. In addition, when the first member1231ais not coupled to the holder1231, although the fourth seating groove is open downward and rearward, when the first member1231ais coupled to the holder1231, the fourth seating groove may be open downward.

The elastic member EE may be disposed between the tilting guide unit1241and the housing1220. Particularly, the elastic member EE, the tilting guide unit1241, the second member1226, and the first member1231amay be sequentially disposed. Accordingly, the elastic member EE may be disposed on the first member1231a.

The elastic member EE may be formed of an elastic material, may couple the second member1226and the first member1231a, and may provide an elastic force to the first member1231aand the holder1231connected thereto with respect to the second member1226fixed to the housing1220.

Accordingly, the elastic member EE may be disposed between the housing1220and the mover1230, may be coupled to the housing1220and the mover1230, and may press the tilting guide unit1241through the mover1230. Accordingly, X-axis tilting and/or Y-axis tilting of the mover1230may be performed using the tilting guide unit1241.

In the elastic member EE, portions in contact with the first member1231a(or the holder1231) and the housing1220may be spaced apart from each other in the third direction (Z-axis direction). Due to a distance between the contact portions (first and second bonding parts which will be described below), the elastic member EE may have a pre-load. In addition, the pre-load may be transmitted to the tilting guide unit1241through the mover1230and transmitted to the second member1226through the tilting guide unit1241. Accordingly, the tilting guide unit1241disposed between the mover1230and the second member1226may be pressed by the elastic member EE. That is, a force by which the tilting guide unit1241is positioned between the mover1230and the second member1226may be maintained. Accordingly, even when the X-axis tilting or Y-axis tilting is performed, the tilting guide unit1241is not separated, and a position of the tilting guide unit1241between the mover1230and the housing1220can be maintained.

The rotation part1240may include the tilting guide unit1241.

The tilting guide unit1241may be coupled to the mover1230and the housing1220described above. In addition, the tilting guide unit1241may be disposed between the mover1230and the second member1226and coupled to the mover1230and the housing1220. In other words, the tilting guide unit1241may be disposed between the second member1226and the holder1231. The tilting guide unit1241may be positioned between the second member1226and the fourth seating groove1231S4aof the holder1231.

Accordingly, in the camera actuator according to another embodiment, the first member1231a, the second member1226, the tilting guide unit1241, the holder1231, and the fourth housing side portion1224may be sequentially disposed in the third direction (Z-axis direction).

In addition, the tilting guide unit1241may be disposed adjacent to the optical axis. Accordingly, the camera actuator according to another embodiment can easily change the optical path through the first and second axis tilting which will be described below.

In the embodiment, the tilting guide unit1241may include first protruding portions spaced apart from each other in the first direction (X-axis direction) and second protruding portions spaced apart from each other in the second direction (Y-axis direction). In addition, the first protruding portions and the second protruding portions may protrude in opposite directions. Details thereof will be described below.

The driving unit1250includes the driving magnets1251, the driving coils1252, the Hall sensor units1253, the substrate part1254, and the yoke parts1255. The above-described content may be equally applied to the content thereof.

FIG.19is a perspective view illustrating the mover according to another embodiment, andFIG.20is a perspective view illustrating the mover in a direction different from a direction inFIG.19.

Referring toFIGS.19and20, the optical member1232may be seated in the holder. The optical member1232may be a rectangular optical member as a reflecting part but is not limited thereto.

In the embodiment, the optical member1232may include protruding portions1232aon parts of outer side surfaces. The optical member1232may be easily coupled to the holder through the protruding portions1232a. In addition, a lower surface1232bof the optical member1232may be seated on the seating surface of the holder. Accordingly, the lower surface1232bof the optical member1232may correspond to the seating surface of the holder. In the embodiment, the lower surface1232bmay be formed as an inclined surface like the seating surface of the holder. Accordingly, the optical member may be moved according to movement of the holder, and the optical member1232may be inhibited from being separated from the holder according to the movement at the same time.

In addition, as described above, the optical member1232may be formed as a structure capable of reflecting light reflected from the outside (for example, by an object) into the camera module. Like the embodiment, the optical member1232may also be formed as a single mirror. In addition, the optical member1232may change a path of reflected light to improve the first camera actuator and solve a spatial limitation of the first camera actuator. Accordingly, it should be understood that the camera module may increase an optical path to provide a wide range of magnification while minimizing a thickness. In addition, it should be understood that the camera module including the camera actuator according to another embodiment may also increase an optical path to provide a wide range of magnification while minimizing a thickness.

FIG.21is a perspective view illustrating the holder according to another embodiment,FIG.22is a bottom view illustrating the holder according to another embodiment, andFIG.23is a side view illustrating the holder according to another embodiment.

Referring toFIGS.21to23, the holder1231may include a seating surface1231kon which the optical member1232is seated. The seating surface1231kmay be an inclined surface. In addition, the holder1231may include a step portion1231bon the seating surface1231k. In addition, in the holder1231, the step portion1231bmay be coupled to the protruding portions1232aof the optical member1232.

The holder1231may include the plurality of outer side surfaces. For example, the holder1231may include a first holder outer side surface1231S1, a second holder outer side surface1231S2, a third holder outer side surface1231S3, and a fourth holder outer side surface1231S4. The description of the above-described embodiment may be equally applied to the description about this.

Specifically, the fourth holder outer side surface1231S4may include the fourth seating groove1231S4a. In addition, the first member1231a, the second member1226, and the tilting guide unit1241may be sequentially positioned in the fourth seating groove1231S4ain the third direction (Z-axis direction).

In the embodiment, the fourth seating groove1231S4amay include a plurality of regions. The fourth seating groove1231S4amay include a first region AR1, a second region AR2, and a third region AR3.

The first member1231amay be positioned in the first region AR1. That is, the first region AR1may overlap the first member1231ain the first direction (X-axis direction).

The second member1226may be positioned in the second region AR2. That is, the second region AR2may overlap the second member1226in the first direction (X-axis direction).

The tilting guide unit1241may be positioned in the third region AR3. In addition, the third region AR3may overlap the tilting guide unit1241in the first direction (X-axis direction). Particularly, the third region AR3may overlap a base of the tilting guide unit1241in the first direction (X-axis direction).

In addition, according to the embodiment, the second region AR2may be positioned between the first region AR1and the third region AR3. In addition, heights of the first region AR1, the second region AR2, and the third region AR3in the first direction (X-axis direction) may be different. In the embodiment, the height of the first region AR1may be greater than the height of the second region AR2and the height of the third region AR3in the first direction (X-axis direction). Accordingly, a step may be positioned between the first region AR1and the second region AR2.

The first member1231amay be seated in the fourth holder outer side surface1231S4. A second coupling part PP2may be positioned on an outer side surface (for example, a surface opposite to a surface facing the second member) of the first member1231a. The second coupling part PP2may include a coupling base PP2aand second coupling protruding portions PP2b. The second coupling part PP2may be disposed to overlap the first protruding portion, which will be described below, in the first direction (X-axis direction).

The second coupling protruding portion PP2bmay be provided as a plurality of second coupling protruding portions PP2bspaced apart from each other in the second direction (Y-axis direction). In this case, all bisectors between the plurality of second coupling protruding portions PP2bmay be positioned on top points of the first protruding portions in the first direction (X-axis direction).

FIG.24is a plan view illustrating the elastic member according to another embodiment,FIG.25is a side view illustrating the elastic member according to another embodiment, andFIG.26is a top view illustrating the elastic member according to another embodiment.FIG.27is a view for describing that the first member, the second member, and the elastic member are coupled in the first camera actuator according to another embodiment, andFIG.28is an enlarged view illustrating portion K inFIG.27.

Referring toFIGS.24to28, the elastic member EE according to another embodiment includes a first bonding parts EP1, a second bonding part EP2, and connecting parts CP.

The first bonding parts EP1may be connected to the housing1220, and the first bonding parts EP1and the housing1220may be coupled to each other. The first bonding part EP1may be provided as a plurality of first bonding parts EP1. Hereinafter, the present invention will be described based on two first bonding parts EP1.

In addition, the first bonding parts EP1may be coupled to the fixed member. That is, the first bonding parts EP1may be coupled to the housing1220or the second member1226. Hereinafter, like the drawings, the first bonding parts EP1may be coupled to the second member1226.

In addition, the second bonding part EP2may be coupled to the first member1231a, and the second bonding part EP2and the first member1231amay be coupled to each other.

The connecting parts CP may be disposed between the first bonding parts EP1and the second bonding part EP2. That is, one ends of the connecting parts CP may be connected to the first bonding parts EP1, and the other ends may be connected to the second bonding part EP2.

In the embodiment, the second bonding part EP2may be positioned between the plurality of first bonding parts EP1spaced apart from each other. Specifically, the second bonding part EP2may be disposed between the mover1230and the first bonding parts EP1. That is, the second bonding part EP2may be spaced apart from the first bonding parts EP1in the third direction (Z-axis direction). Accordingly, the connecting parts CP may extend from the first member1231atoward the second member1226. Alternatively, the connecting parts CP may extend in the third direction (Z-axis direction). For example, the connecting parts CP may have a shape bent from the first bonding parts EP1toward the second bonding part EP2. Accordingly, an elastic restoring force generated by the elastic member EE may be generated from the second bonding part EP2toward the first bonding parts EP1because the first bonding parts EP1are fixed (the housing is fixed). Accordingly, a force may be generated from the second bonding part EP2toward the first bonding parts EP1at the first member1231aconnected to the second bonding part EP2and the mover1230connected to the first member1231a. Accordingly, the above-described force may also be applied between the mover1230and the tilting guide unit1241. In addition, since the tilting guide unit1241ultimately presses the second member1226, the position of the tilting guide unit1241may be maintained between the mover1230and the second member1226(or the housing) to perform first axis tilting or second axis tilting which will be described below. In addition, due to a separation distance dd1between each of the first bonding parts EP1and the second bonding part EP2in the third direction (Z-axis direction), the elastic member EE may have the pre-load which is the above-described force.

In addition, the second bonding part EP2of the elastic member EE may not be disposed on a surface in contact with the first bonding parts EP1of the elastic member EE and one surface of the first member1226which is the fixed member. In other words, the second bonding part EP2of the elastic member EE may not be disposed on a plane (XY plane) on which one surface (for example, a surface in contact with the second member) of the first bonding part EP1of the elastic member EE is disposed or a surface in contact with the second member is disposed. That is, as described above, the first bonding parts EP1and the second bonding part EP2may be positioned on different planes (XY) and may be spaced from each other in the third direction (Z-axis direction). Accordingly, the second bonding part EP2may be positioned closer to a reflection member than the first bonding parts EP1.

In addition, in the embodiment, even when the pre-load is generated in a direction opposite to the third direction (for example, a direction from the tilting guide unit toward the second member), the position of the tilting guide unit1241may be easily maintained. In addition, since a magnetic member and the like are not used, a malfunction of another camera actuator (for example, a first camera actuator) adjacent to the first camera actuator due to a magnetic force can be inhibited. In addition, in the camera actuator according to another embodiment, the magnetic member and the like are not used, the elastic member which is light and thin is used, and thus miniaturization can be easily achieved. In addition, the second bonding part EP2may be disposed between the mover1230and the first bonding parts EP1.

In addition, in the embodiment, the first bonding parts EP1may include first flat regions EP1fand a plurality of first bonding holes EP1hpositioned in the first flat regions EP1f.

Inner side surfaces of the first flat regions EP1fmay be spaced apart from contact areas CA1in which the housing and the first flat regions EP1fare in contact with each other in the second direction (Y-axis direction). In other words, the inner side surfaces of the first flat regions EP1fmay be positioned further inward than the contact areas CA1in which the housing and the first flat regions EP1fare in contact with each other.

Accordingly, the second member1226in contact with the first flat regions EP1fmay not interfere with the connecting parts CP. Accordingly, the camera actuator according to another embodiment may accurately perform X-axis tilting and/or Y-axis tilting.

In addition, the second bonding part EP2may include a second flat region EP2fand a plurality of second bonding holes EP2hpositioned in the second flat region EP2f.

An outer side surface EP2sof the second flat region EP2fmay be spaced apart from a contact area CA2, in which the second flat region EP2fis in contact with the coupling base PP2aof the first member1231a, in the second direction (Y-axis direction). In other words, the outer side surface EP2sof the second flat region EP2fmay be positioned further outward than an outer side surface the coupling base PP2a. Accordingly, the first member1231ain contact with the second flat region EP2fmay not interfere with the connecting parts CP. Accordingly, the camera actuator according to another embodiment can accurately perform X-axis tilting and/or Y-axis tilting.

In addition, the first bonding hole EP1hand the second bonding hole EP2hmay be provided as a plurality of first bonding holes EP1hand a plurality of second bonding holes EP2h.

In addition, the first bonding holes EP1hmay be spaced apart from each other in the first direction (X-axis direction). In addition, the second bonding holes EP2hmay be spaced apart from each other in the second direction (Y-axis direction).

In the embodiment, a length dd3(for example, a diameter) of the second bonding hole EP2hin the first direction (X-axis direction) may be smaller than a length dd2between the plurality of first bonding holes EP1hin the first direction (X-axis direction).

In addition, the second bonding holes EP2hmay be positioned between the first bonding holes EP1h. For example, the second bonding holes EP2hmay be disposed on a first bisector LX1which bisects between the first bonding holes EP1h. Accordingly, in the camera actuator according to another embodiment, a force applied by the elastic member EE can be uniformly applied to both an upper portion and a lower portion of the mover.

When Y-axis tilting is performed, a current provided to the first coil and the second coil may not be differently changed according to plus (+)/minus (−) with respect to the Y-axis. That is, a variation range of the current provided to the first coil and the second coil may be uniform to correspond to a position of the mover. Accordingly, control for a Y-axis tilt can be easily performed. In addition, since an elastic restoring force is uniformly generated in one region of the elastic member EE, the reliability of the elastic member EE can be improved.

In addition, second bisectors LX2connecting centers of the first bonding holes EP1hin the first bonding parts EP1(or the first flat regions) and a third virtual line LX3bisecting between the second bonding holes EP2hmay parallel to each other. Accordingly, in the camera actuator according to another embodiment, a force applied by the elastic member EE can be uniformly provided even when the mover moves.

When X-axis tilting is performed, an amount of a current provided to the third coil may not be differently changed according to plus (+)/minus (−) with respect to the X-axis. That is, a variation range of the current provided to the third coil may be uniform to correspond to the position of the mover. Accordingly, control for the X-axis tilt can be easily performed. In addition, since an elastic restoring force is uniformly generated in one region of the elastic member, the reliability of the elastic member EE can be improved.

In addition, the second bisectors LX2and the third virtual line LX3may be in parallel in the first direction (X-axis direction).

In the embodiment, the connecting parts CP may include first connecting parts CP1, second connecting parts CP2, third connecting parts CP3, and fourth connecting parts CP4which are positioned between the first bonding parts EP1and the second bonding part EP2.

The first connecting parts CP1, the second connecting parts CP2, the third connecting parts CP3, and the fourth connecting parts CP4may be sequentially disposed from the first bonding part EP1to the second bonding part EP2. That is, the first connecting parts CP1, the second connecting parts CP2, the third connecting parts CP3, and the fourth connecting parts CP4may be sequentially disposed from the outside toward the inside.

In addition, the first connecting parts CP1, the second connecting parts CP2, the third connecting parts CP3, and the fourth connecting parts CP4may be symmetrically disposed with respect to the second bonding part EP2. In addition, the first connecting parts CP1, the second connecting parts CP2, the third connecting parts CP3, and the fourth connecting parts CP4may be symmetrically disposed with respect to the third virtual line LX3. In addition, the first connecting parts CP1, the second connecting parts CP2, the third connecting parts CP3, and the fourth connecting parts CP4may also be symmetrically disposed with respect to the first bisector LX1.

One end portion of each of the first connecting parts CP1may be in contact with the first bonding part EP1. In addition, the first connecting part CP1may extend toward the second bonding part EP2. That is, the first connecting part CP1may be in contact with the first bonding part EP1and may extend inward.

Each of the second connecting parts CP2may be connected to the other end portion of the first connecting part CP1. That is, one end portion of the second connecting part CP2may be in contact with the other end portion of the first connecting part CP1.

The second connecting part CP2may be bent from the first connecting part CP1in the first direction (X-axis direction). In the embodiment, the second connecting part CP2may extend downward under the first bisector LX1or extend upward above the first bisector LX1. Accordingly, the second connecting part CP2may extend to be inclined at a first inclination θ1with respect to the first connecting part CP1. For example, the first inclination may be 90°.

Each of the third connecting parts CP3may be connected to the other end portion of the second connecting part CP2. That is, one end portion of the third connecting part CP3may be in contact with the other end portion of the second connecting part CP2.

The third connecting part CP3may be bent from the second connecting part CP2in the second direction (Y-axis direction). In the embodiment, the third connecting part CP3may extend from the second connecting part CP2toward the second bonding part EP2. In addition, the third connecting part CP3may extend to a right side from a left side of the third virtual line LX3or extend to the left side from the right side of the third virtual line Lx3.

In addition, the third connecting part CP3may extend to be inclined at a second inclination θ2with respect to the second connecting part CP2. The second inclination may be the same as the first inclination.

Each of the fourth connecting parts CP4may be connected to the other end portion of the third connecting part CP3. One end portion of the fourth connecting part CP4may be in contact with the other end portion of the third connecting part CP3. In addition, the other end portion of the fourth connecting part CP4may be connected to the second bonding part EP2.

The fourth connecting part CP4may extend toward the third virtual line LX3at a predetermined inclination with respect to the third connecting part CP3. That is, the fourth connecting part CP4may bent toward the second bonding part EP2at the predetermined angle with respect to the third connecting part CP3

The fourth connecting part CP4may extend to be inclined at a third inclination θ3with respect to the third connecting part CP3. The third inclination θ3may be smaller than the first inclination θ1and the second inclination θ2.

In the embodiment, the elastic member EE may have two closed loops which are formed by the first bonding parts EP1, the second bonding part EP2, and the connecting parts CP and are symmetrical with respect to the third virtual line LX3or the second bonding part EP2. In addition, in each of the closed loop, a height of the first connecting part CP1may be maintained. That is, a separation distance CL1between the first connecting part CP1and the first bisector LX1may be the same.

In addition, in the closed loop, a height of the second connecting part CP2and a height of the third connecting part CP3may be greater than the height of the first connecting part CP1. That is, the separation distance CL1between the first connecting part CP1and the first bisector LX1may be smaller than a separation distance CL2between the third connecting part CP3and the first bisector LX1. In other words, in the second connecting part CP2and the third connecting part CP3, the height (a length in the first direction (X-axis direction)) may increase compared to the first connecting part CP1in the closed loop.

In addition, in the closed loop, the height between the third connecting parts CP3may be maintained.

In addition, in the closed loop, a separation distance CL3between the fourth connecting part CP4and the first virtual line LX3may decrease to a predetermined length in a direction toward the third virtual line. That is, in the closed loop, the height may be decreased according to a predetermined inclination by the fourth connecting part CP4. Accordingly, the fourth connecting part CP4may be in contact with the second bonding part EP2.

FIG.29is a view for describing that the first member, the second member, and the elastic member are coupled in the first camera actuator according to another embodiment, andFIG.30is a view in which the first member is removed from the first camera actuator inFIG.29.

Referring toFIGS.29and30, in the first camera actuator according to another embodiment, the second bonding part EP2may overlap the first protruding portions PR1in the second axis or the first direction.

In addition, in the base which will be described below, the top points of the first protruding portions PR1may be disposed on an intermediate axis (corresponding to the above-described third virtual line) bisecting the plurality of second bonding holes EP2h.

By using such a structure, when second axis tilting is performed by the first protruding portions PR1, a force applied to the tilting guide unit by the elastic member EE may be uniformly generated with respect to the second axis or first direction.

In addition, the second member1226may include a protruding region1226aprotruding rearward. The protruding region1226amay partially overlap the elastic member EE in the second direction (Y-axis direction). Accordingly, the connecting parts CP of the elastic member EE may be formed as a structure surrounding the protruding region1226a. By using such a structure, a center of gravity can be easily adjusted by reducing a weight.

In addition, top points of the second protruding portions PR2may be positioned on the first bisector LX1. That is, the top points of the second protruding portions PR2may be disposed on the first bisector LX1bisecting a space between the first bonding holes EP1h. Accordingly, in the camera actuator according to another embodiment, a force pressed by the elastic member EE may be uniformly provided to all of an upper portion or a lower portion of the mover.

FIG.31is a perspective view illustrating the tilting guide unit according to another embodiment,FIG.32is a perspective view illustrating the tilting guide unit in a direction different from a direction inFIG.31, andFIG.33is a cross-sectional view illustrating the tilting guide unit along line FF′ inFIG.31.

Referring toFIGS.31to33, the tilting guide unit1241according to another embodiment may include a base BS, the first protruding portions PR1protruding from a first surface1241aof the base BS, and the second protruding portions PR2protruding from a second surface1241bof the base BS. In addition, as described above, the surfaces on which the first protruding portions and the second protruding portions are formed may be opposite to each other according to a structure, the present invention will be described based on the above-described content.

First, the base BS may include the first surface1241aand the second surface1241bopposite to the first surface1241a. That is, the first surface1241amay be spaced apart from the second surface1241bin the third direction (Z-axis direction), and in the tilting guide unit1241, the first surface1241aand the second surface1241bmay be outer side surfaces which are opposite to or face each other.

The tilting guide unit1241may include the first protruding portions PR1extending from the first surface1241atoward one side. According to the embodiment, the first protruding portions PR1may protrude from the first surface1241atoward the mover. The first protruding portion PR1may be provided as a plurality of first protruding portions PR1which may include a 1-1 protruding portion PR1aand a 1-2 protruding portion PR1b.

The 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be positioned in parallel in the first direction (X-axis direction). In other words, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay overlap in the first direction (X-axis direction). In addition, in the embodiment, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be bisected by a virtual line extending in the first direction (X-axis direction).

In addition, each of the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay have a curvature, and, for example, a hemispherical shape.

In addition, the tilting guide unit1241may include the second protruding portions PR2extending from the second surface1241atoward one side. According to the embodiment, the second protruding portions PR2may protrude from the second surface1241btoward the housing. In addition, the second protruding portion PR2may be provided as a plurality of second protruding portions PR2which may include a 2-1 protruding portion PR2aand a 2-2 protruding portion PR2bin the embodiment.

The 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be positioned in parallel in the second direction (Y-axis direction). That is, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay overlap in the second direction (Y-axis direction). In addition, in the embodiment, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be bisected by a virtual line VL2′ extending in the second direction (Y-axis direction).

Each of the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay have a curvature and, for example, a hemispherical shape. In addition, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be in contact with the first member1231aat point spaced apart from the second surface1241bof the base BS.

The 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be positioned in a region between the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bin the second direction. According to the embodiment, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1b2-1 may be positioned in a central region of a separation space between the protruding portion PR2aand the 2-2 protruding portion PR2bin the second direction. By using such a structure, the actuator according to another embodiment may allow an angle of an X-axis tilt to have the same range about the X-axis. In other words, the tilting guide unit1241may provide the same range (for example, a plus/minus range), within which X-axis tilting of the mover is to be performed, about the X-axis based on the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1b.

In addition, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be positioned in a region between the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bin the first direction. According to the embodiment, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be positioned in a central region of a separation space between the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bin the first direction. By using such a structure, the actuator according to another embodiment may allow an angle of a Y-axis tilt to have the same range about the Y-axis. In other words, the same range (for example, a plus/minus range), within which Y-axis tilting of the mover may be performed, may be provided about the Y-axis based on the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2b.

The first protruding portions PR1may be positioned on a first virtual line VL1. In this case, the first virtual line VL1is a line which bisects the first surface1241ain the second direction (Y-axis direction). Accordingly, the tilting guide unit1241may easily perform X-axis tilting using the first protruding portions PR1. In addition, since the tilting guide unit1241performs the X-axis tilt about the first virtual line VL1, a rotational force can be uniformly applied to the tilting guide unit1241. Accordingly, the X-axis tilting can be delicately performed, and the reliability of the element can be improved.

In addition, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be symmetrically disposed with respect to the first virtual line VL1and the second virtual line VL2. Alternatively, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be symmetrically positioned with respect to a first central point C1. By using such a structure, when X-axis tilting is performed, the same support force supported by the first protruding portions PR1can be applied to an upper side and a lower side with respect to the second virtual line VL2. Accordingly, the reliability of the tilting guide unit can be improved. In this case, the second virtual line VL2is a line which bisects the first surface1241ain the first direction (X-axis direction). In addition, the first central point C1may be an intersection point of the first virtual line VL1and the second virtual line VL2. Alternatively, the first central point C1may be a point corresponding to a center of gravity according to a shape of the tilting guide unit1241.

In addition, since the tilting guide unit1241performs Y-axis tilting about a fourth bisector VL2′, a rotational force can be uniformly applied to the tilting guide unit1241. Accordingly, the Y-axis tilting can be delicately performed, and the reliability of the element can be improved.

In addition, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be on the fourth bisector VL2′ disposed to be symmetrical with respect to a third bisector VL1′. Alternatively, the 2-1 protruding portion PR2aand the 2-2 protruding portion PR2bmay be symmetrically positioned with respect to a second central point C1′. By using such a structure, when Y-axis tilting is performed, the same support force supported by the second protruding portion PR2may be applied to an upper side and a lower side of the tilting guide unit with respect to the fourth bisector VL2′. Accordingly, the reliability of the tilting guide unit can be improved. In this case, the third bisector VL1′ is a line which bisects the second surface1241bin the second direction (Y-axis direction). The fourth bisector VL2′ is a line which bisects the second surface1241bin the first direction (X-axis direction). In addition, the second central point C1′ may be an intersection point of the third bisector VL1′ and the fourth bisector VL2′. Alternatively, the second central point C1′ may be a point corresponding to the center of gravity according to the shape of the tilting guide unit1241.

In addition, the above-described content may be equally applied to the description of the first protruding portions PR1and the second protruding portions PR2. In addition, a shape of the base BS may be variously changed according to a weight or a fastening structure of the camera actuator.

FIG.34is a perspective view illustrating the first camera actuator from which the shield can and a substrate are removed according to another embodiment,FIG.35is a cross-sectional view along line PP′ inFIG.34, andFIG.36is a cross-sectional view along line QQ′ inFIG.34.

Referring toFIGS.34to36, the first coil1252amay be positioned on the first housing side portion1221, and the first magnet1251amay be positioned on the first holder outer side surface1231S1of the holder1231. Accordingly, the first coil1252aand the first magnet1251amay be positioned opposite to each other. At least a part of the first magnet1251amay overlap the first coil1252ain the second direction (Y-axis direction).

In addition, the second coil1252bmay be positioned on the second housing side portion1222, and the second magnet1251bmay be positioned on the second holder outer side surface1231S2of the holder1231. Accordingly, the second coil1252band the second magnet1251bmay be positioned opposite to each other. At least a part of the second magnet1251bmay overlap the second coil1252bin the second direction (Y-axis direction).

In addition, the first coil1252aand the second coil1252bmay overlap in the second direction (Y-axis direction), and the first magnet1251aand the second magnet1251bmay overlap in the second direction (Y-axis direction).

By using such a structure, an electromagnetic force applied to the outer side surfaces (the first holder outer side surface and the second holder outer side surface) of the holder may be applied along a parallel axis in the second direction (Y-axis direction), and thus X-axis tilting can be accurately and precisely performed.

In addition, the second protruding portions PR2aand PR2bof the tilting guide unit1241may be in contact with the second member1226of the housing1220. The second protruding portions PR2may be seated in the second protrusion grooves PH2formed in one side surface of the second member1226. In addition, when X-axis tilting is performed, the second protruding portions PR2aand PR2bmay be reference axes (or rotation axes) of the tilt. Accordingly, the tilting guide unit1241and the mover1230may vertically move.

In addition, as described above, a first Hall sensor1253amay be positioned outside to be electrically connected and coupled to the substrate part1254. However, the position of the first Hall sensor1253ais not limited thereto.

In addition, the third coil1252cmay be positioned on the third housing side portion1223, and the third magnet1251cmay be positioned on the third holder outer side surface1231S3of the holder1231. The third coil1252cand the third magnet1251cmay overlap at least partially in the first direction (X-axis direction). Accordingly, an electromagnetic force between the third coil1252cand the third magnet1251cmay be easily controlled.

As described above, the tilting guide unit1241may be positioned on the fourth holder outer side surface1231S4of the holder1231. In addition, the tilting guide unit1241may be seated in the fourth seating groove1231S4aof the fourth holder outer side surface. As described above, the fourth seating groove1231S4amay include the first region AR1, the second region AR2, and the third region AR3which are described above.

The first member1231amay be disposed in the first region AR1. In addition, an outer side surface of the first member1231amay be coupled to the second bonding part EP2of the elastic member EE. Accordingly, the holder1231may apply a force RF2′ to the tilting guide unit1241in the same direction of a restoring force RF2generated by the elastic member EE.

The second member1226may be disposed in the second region AR2. The second member1226may include the second protrusion grooves PH2. The second protrusion grooves PH2may be positioned in a surface of the second member1226facing the holder1231.

In addition, the restoring force RF2generated by the elastic member EE may be applied to the second member1226through the above-described path. Accordingly, the restoring forces RF2and RF2′ generated by the elastic member EE may press the tilting guide unit1241disposed between the second member1226and the holder1231.

The tilting guide unit1241may be disposed in the third region AR3. As described above, the tilting guide unit1241may include the first protruding portions PR1and the second protruding portions PR2. In this case, the first protruding portions PR1and the second protruding portions PR2may also be respectively disposed on the second surface1241band the first surface1241aof the base BS. The first protruding portions PR1and the second protruding portion PR2may be variously positioned on the facing surfaces of the base BS. However, the present invention will be described with reference to the drawings below.

In addition, the first protrusion grooves PH1may be positioned in the holder1231. Particularly, the first protrusion grooves PH1may be positioned in the fourth seating groove1231S4a. In addition, the first protruding portions PR1may be positioned in the first protrusion grooves PH1. Accordingly, at least a part of the first protruding portion PR1may be in contact with the first protrusion groove PH1. In addition, as described above, the top points of the first protruding portions PR1may be positioned on the bisector of the bonding holes of the second bonding part.

In addition, a maximum diameter of each of the first protrusion grooves PH1may correspond to a maximum diameter of each of the first protruding portions PR1. This may be equally applied to the second protrusion grooves PH2and the second protruding portions PR2. That is, a maximum diameter of each of the second protrusion grooves PH2may correspond to a maximum diameter of each of the second protruding portions PR2. In addition, accordingly, the second protruding portions PR2may be in contact with the second protrusion grooves PH2. By using such a structure, second axis tilting can be easily performed based the first protruding portions PR1, first axis tilting can be easily performed based on the second protruding portions PR2, and radii of the tilt can be increased.

In addition, the tilting guide unit1241may be disposed parallel to the first member1231aand the second member1226in the third direction (Z-axis direction), and thus the tilting guide unit1241may overlap the optical member1232in the first direction (X-axis direction). More specifically, in the embodiment, the first protruding portions PR1may overlap the optical member1232in the first direction (X-axis direction). In addition, at least a part of the first protruding portion PR1may overlap the third coil1252cor the third magnet1251cin the first direction (X-axis direction). That is, in the camera actuator according to another embodiment, the protruding portions, which are central axes of a tilt may be positioned adjacent to the center of gravity of the mover1230. Accordingly, the tilting guide unit may be positioned adjacent to the center of gravity of the mover. Accordingly, in the camera actuator according to another embodiment, a moment value for tilting the mover can be minimized, a consumption amount of a current applied to the coil part and the like in order to tilt the mover can be minimized, a power consumption amount can be reduced, and thus the reliability of the element can be improved.

In addition, as described above, a second Hall sensor1253bpositioned inside the third coil1252cmay detect a change in magnetic flux, and thus position detection between the third magnet1251cand the second Hall sensor1253bmay be performed.

FIG.37is a view illustrating the driving unit according to another embodiment.

Referring toFIG.37, as described above, the driving unit1250includes the driving magnets1251, the driving coils1252, the Hall sensor units1253, and the substrate part1254.

In addition, as described above, the driving magnets1251may include the first magnet1251a, the second magnet1251b, and the third magnet1251cwhich provide a driving force due to an electromagnetic force. Each of the first magnet1251a, the second magnet1251b, and the third magnet1251cmay be positioned on the outer side surfaces of the prism holder1231.

In addition, the driving coils1252may include a plurality of coils. In the embodiment, the driving coils1252may include the first coil1252a, the second coil1252b, and the third coil1252c. The first coil1252amay be positioned opposite to the first magnet1251a. Accordingly, as described above, the first coil1252amay be positioned in the first housing hole1221aof the first housing side portion1221. In addition, the second coil1252bmay be positioned opposite to the second magnet1251b. Accordingly, as described above, the second coil1252bmay be positioned in the second housing hole1222aof the second housing side portion1222.

The first camera actuator according to another embodiment can minimize an occurrence of a decentering or tilting phenomenon to provide best optical characteristics when OIS is performed by controlling the mover1230to rotate about the first axis (X-axis direction) or second axis (Y-axis direction) using an electromagnetic force between the driving magnets1251and the driving coils1252.

In addition, according to the embodiment, a size limitation of the actuator can be solved to provide an ultra-slim and ultra-small camera actuator and a camera module including the same by implementing the OIS using the tilting guide unit1241of the rotation part1240disposed between the housing1220and the mover1230.

The substrate part1254may include a first substrate side portion1254a, a second substrate side portion1254b, and a third substrate side portion1254c.

The first substrate side portion1254aand the second substrate side portion1254bmay be disposed to face each other. In addition, the third substrate side portion1254cmay be positioned between the first substrate side portion1254aand the second substrate side portion1254b.

In addition, the first substrate side portion1254amay be positioned between the first housing side portion and the shield can, and the second substrate side portion1254bmay be positioned between the second housing side portion and the shield can. In addition, the third substrate side portion1254cmay be positioned between the third housing side portion and the shield can and may be a lower surface of the first substrate part1254.

The first substrate side portion1254amay be coupled and electrically connected to the first coil1252a. In addition, the first substrate side portion1254amay be coupled and electrically connected to a first Hall sensor1253a.

The second substrate side portion1254bmay be coupled and electrically connected to the second coil1252b. In addition, it should be understood that the second substrate side portion1254bmay also be electrically connected to the first Hall sensor.

The third substrate side portion1254cmay be coupled and electrically connected to the third coil1252c. In addition, the third substrate side portion1254cmay be coupled to and electrically connected to the second Hall sensor1253b.

FIG.38is a perspective view illustrating the first camera actuator according to another embodiment,FIG.39is a cross-sectional view along line SS' inFIG.38, andFIG.40is an exemplary view of movement of the first camera actuator illustrated inFIG.39.

Referring toFIGS.38to40, Y-axis tilting may be performed. That is, rotation may be performed with respect to the first direction (X-axis direction) to implement OIS.

In the embodiment, the third magnet1251cdisposed in a lower portion of the holder1231and the third coil1252cmay generate an electromagnetic force to rotate or tilt the mover1230with respect to the second direction (Y-axis direction).

Specifically, a restoring force of the elastic member EE may be transmitted to the first member1231aand ultimately transmitted to the tilting guide unit1241disposed between the second member1226and the holder1231. Accordingly, the tilting guide unit1241may be pressed by the mover1230and the housing1220using the above-described repulsive force.

In addition, the second protruding portions PR2may be supported by the second member1226. In this case, in the embodiment, the tilting guide unit1241may rotate or tilt about the second protruding portions PR2, which are reference axes (or rotation axes) and protrude toward the second member1226, that is, may rotate or tilt about the second direction (Y-axis direction). In other words, the tilting guide unit1241may rotate or tilt about the second protruding portions PR2, which are the reference axes (or rotation axes) and protrude toward the second member1226, that is, may rotate or tilt with respect to the first direction (X-axis direction).

For example, while the mover1230is rotated (X1→X1a) by a first angle θ1with respect to the X-axis direction by first electromagnetic forces F1A and F1B between the third magnet1251cdisposed in the third seating groove and the third coil part1252cdisposed on the third substrate side portion, OIS may be performed. In addition, while the mover1230is rotated (X1→X1b) by a first angle θ1with respect to the X-axis direction by the first electromagnetic forces F1A and F1B between the third magnet1251cdisposed in the third seating groove and the third coil part1252bdisposed on the third substrate side portion, OIS may be performed. The first angle θ1may be in the range of ±1° to ±3°. However, the present invention is not limited thereto.

FIG.41is a perspective view illustrating the first camera actuator according to another embodiment,FIG.42is a cross-sectional view along line RR′ inFIG.41, andFIG.43is an exemplary view of movement of the first camera actuator illustrated inFIG.42.

Referring toFIGS.41and43, X-axis tilting may be performed. That is, while the mover1230tilts or rotates with respect to the Y-axis direction, OIS can be performed.

In the embodiment, the first magnet1251aand the second magnet1251bdisposed in the holder1231and the first coil1252aand the second coil1252bmay generate electromagnetic forces and tilt or rotate the tilting guide unit1241and mover1230with respect to the first direction (X-axis direction).

Specifically, a restoring force of the elastic member EE may be transmitted to the first member1231aand the holder1231and ultimately transmitted to the tilting guide unit1241disposed between the holder1231and the second member1226. Accordingly, the tilting guide unit1241may be pressed by the mover1230and the housing1220using the above-described repulsive forces.

In addition, the 1-1 protruding portion PR1aand the 1-2 protruding portion PR1bmay be spaced apart from each other in the first direction (X-axis direction) and supported by the first protrusion grooves PH1formed in the fourth seating groove1231S4aof the holder1231. In addition, in the embodiment, the tilting guide unit1241may rotate or tilt about the first protruding portions PR1, which are reference axes (or rotation axes) and protrude toward the holder1231(for example, in the third direction), that is, may rotate or tilt about the first direction (X-axis direction).

For example, while the mover1230is rotated (Y1→Y1a) by a second angle θ2with respect to the Y-axis direction by second electromagnetic forces F2A and F2B between the first and second magnets1251aand1251bdisposed in the first seating groove and the first and second coil parts1252aand1252bdisposed on the first and second substrate side portions, OIS can be performed. In addition, while the mover1230is rotated (Y1→Y1b) by a second angle θ2with respect to the Y-axis direction by the second electromagnetic forces F2A and F2B between the first and second magnets1251aand1251bdisposed in the first seating groove and the first and second coil parts1252aand1252bdisposed on the first and second substrate side portion, the OIS can be performed. The second angle θ2may be in the range of ±1° to 3°. However, the present invention is not limited thereto.

As described above, the second actuator according to another embodiment can minimize a decentering or tilting phenomenon to provide best optical characteristics when OIS is performed by controlling the mover1230to rotate about the first direction (X-axis direction) or the second direction (Y-axis direction) using an electromagnetic force between the driving magnet in the holder and the driving coil disposed in the housing. In addition, as described above, the term “Y-axis tilting” refers to rotation or tilting with respect to the first direction (X-axis direction), and the term “X-axis tilting” refers to rotation or tilting with respect to the second direction (Y-axis direction).

FIG.44is a perspective view illustrating the second camera actuator according to the embodiment, andFIG.45is an exploded perspective view illustrating the second camera actuator according to the embodiment.FIG.46is a cross-sectional view along line DD′ inFIG.44, andFIG.47is a cross-sectional view along line EE′ inFIG.44.

Referring toFIGS.44to47, the second camera actuator1200according to the embodiment may include a lens part1220, a second housing1230, a second driving unit1250, a base portion (not shown), and a second substrate part1270. In addition, the second camera actuator1200may further include a second shield can (not shown), elastic parts (not shown), and a bonding member (not shown). In addition, the second camera actuator1200according to the embodiment may further include an image sensor IS. The second camera actuator1200may be coupled to the first camera actuator according to the above-described embodiment or another embodiment.

The second shield can (not shown) may be positioned at one region (for example, an outermost side) of the second camera actuator1200to surround the components (the lens part1220, the second housing1230, the elastic parts (not shown), the second driving unit1250, the base portion (not shown), the second substrate part1270, and the image sensor IS) which will be described below.

The second shield can (not shown) may block or reduce electromagnetic waves generated from the outside. Accordingly, an occurrence of a malfunction of the second driving unit1250can be reduced.

The lens part1220may be positioned in the second shield can (not shown). The lens part1220may move in the third direction (Z-axis direction). Accordingly, the above-described AF function can be performed.

Specifically, the lens part1220may include a lens assembly1221and a bobbin1222.

The lens assembly1221may include at least one lens. In addition, although the lens assembly1221may be provided as a plurality of lens assemblies1221, the present invention will be described based on one lens assembly1221below.

The lens assembly1221may be coupled to the bobbin1222and moved in the third direction (Z-axis direction) by an electromagnetic force generated by a fourth magnet1252aand a fifth magnet1252bwhich are coupled to the bobbin1222.

The bobbin1222may include an open region surrounding the lens assembly1221. In addition, the bobbin1222may be coupled to the lens assembly1221in one of various manners. In addition, the bobbin1222may include a groove in a side surface and may be coupled to the fourth magnet1252aand the fifth magnet1252bthrough the groove. The bonding member and the like may be applied in the groove.

In addition, the elastic parts (not shown) may be coupled to an upper end and a lower end of the bobbin1222. Accordingly, the bobbin1222may be supported by the elastic parts (not shown) while moving in the third direction (Z-axis direction). That is, a position of the bobbin1222may be maintained, and thus the position of the bobbin1222may be maintained in the third direction (Z-axis direction). The elastic parts (not shown) may be formed as leaf springs.

The second housing1230may be disposed between the lens part1220and the second shield can (not shown). In addition, the second housing1230may be disposed to surround the lens part1220.

A hole may be formed in a side portion of the second housing1230. A fourth coil1251aand a fifth coil1251bmay be disposed in the hole. The hole may be positioned to correspond to the groove of the bobbin1222.

The fourth magnet1252amay be positioned to face the fourth coil1251a. In addition, the fifth magnet1252bmay be positioned to face the fifth coil1251b.

The elastic parts (not shown) may include a first elastic member (not shown) and a second elastic member (not shown). The first elastic member (not shown) may be coupled to an upper surface of the bobbin1222. The second elastic member (not shown) may be coupled to a lower surface of the bobbin1222. In addition, the first elastic member (not shown) and the second elastic member (not shown) may be formed as the leaf springs as described above. In addition, the first elastic member (not shown) and the second elastic member (not shown) may provide elasticity to the bobbin1222for moving of the bobbin1222moves.

The second driving unit1250may provide driving forces F3and F4for moving the lens part1220in the third direction (Z-axis direction). The second driving unit1250may include driving coils1251and driving magnets1252.

The lens part1220may be moved in the third direction (Z-axis direction) by an electromagnetic force generated between the driving coils1251and the driving magnets1252.

The driving coils1251may include the fourth coil1251aand the fifth coil1251b. The fourth coil1251aand the fifth coil1251bmay be disposed in the hole formed in the side portion of the second housing1230. In addition, the fourth coil1251aand the fifth coil1251bmay be electrically connected to the second substrate part1270. Accordingly, the fourth coil1251aand the fifth coil1251bmay receive a current through the second substrate part1270.

The driving magnets1252may include the fourth magnet1252aand the fifth magnet1252b. The fourth magnet1252aand the fifth magnet1252bmay be disposed in the groove of the bobbin1222and positioned to correspond to the fourth coil1251aand the fifth coil1251b.

The base portion (not shown) may be positioned between the lens part1220and the image sensor IS. Components, such as a filter, may be fixed to the base portion (not shown). In addition, the base portion (not shown) may be disposed to surround the image sensor IS. By using such a structure, since the image sensor IS becomes free from foreign materials, the reliability of the element can be improved.

In addition, the second camera actuator may be a zoom actuator or AF actuator. For example, the second camera actuator may support a single lens or a plurality of lenses and move the lenses according to a control signal of a predetermined control unit to perform an AF function or zoom function.

In addition, the second camera actuator may perform fixed zoom or continuous zoom. For example, the second camera actuator may move the lens assembly1221.

In addition, the second camera actuator may be provided with a plurality of lens assembles. For example, at least one among a first lens assembly (not shown), a second lens assembly (not shown), a third lens assembly (not shown), and a guide pin (not shown) may be disposed in the second camera actuator. The above-described content may be applied thereto. Accordingly, the second camera actuator may perform a high magnification zooming function using the driving unit. For example, the first lens assembly (not shown) and the second lens assembly (not shown) may be moving lenses which move using the driving unit and the guide pin (not shown), and the third lens assembly (not shown) may be a fixed lens, but the present invention is not limited thereto. For example, the third lens assembly (not shown) may perform a function of a focator which collects light to form an image at a specific position, and the first lens assembly (not shown) may perform a function of a variator which reforms the image, which is formed through the third lens assembly (not shown) which is the focator, at another position. Meanwhile, the first lens assembly (not shown) may be in a state in which a change in magnification is large because a distance from a subject or image is greatly changed, and the first lens assembly (not shown) which is the variator may play an important role in changing a focal length or magnification of an optical system. Meanwhile, an image point at which an image is formed through the first lens assembly (not shown) which is the variator may slightly vary according to a position. Accordingly, the second lens assembly (not shown) may perform a position compensation function for the image formed by the variator. For example, the second lens assembly (not shown) may perform a function of a compensator for forming the image formed through the first lens assembly (not shown) which is the variator at an accurate position of the actual image sensor.

The image sensor IS may be positioned inside or outside the second camera actuator. In the embodiment, as illustrated, the image sensor IS may be positioned inside the second camera actuator. The image sensor IS may receive light and convert the received light into an electrical signal. In addition, the image sensor IS may be formed so that a plurality of pixels are formed in an array type. In addition, the image sensor IS may be positioned on an optical axis.

FIG.48is a perspective view illustrating a mobile terminal to which a camera module according to an embodiment is applied.

As illustrated inFIG.48, an electronic device (for example, a mobile terminal1500) of the embodiment may include a camera module1000, a flash module1530, and an AF device1510.

The camera module1000may have an image capturing function and an AF function. For example, the camera module1000may have an AF function using an image.

The camera module1000processes a still image or an image frame of a moving image obtained through an image sensor in an image capturing mode or video call mode.

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

For example, the camera module1000may include a first camera module1000aand a second camera module1000b, and an AF or zoom function and OIS may be implemented by the first camera module1000a. In addition, the second camera module1000bmay also perform an AF or zoom function and an OIS function.

For example, the electronic device1500including a terminal or the like may include the camera module1000. In addition, the camera module1000may include the first camera module1000ain which an opening into which light is incident and the image sensor overlap at least partially in an optical axis direction, and the second camera module1000b(corresponding to the above-described first camera actuator and second camera actuator) including an optical member which changes an optical path of incident light.

In this case, in the second camera module1000baccording to the embodiment, a first magnet may be disposed on a first side surface (corresponding to the above-described first holder outer side surface) of a first camera actuator1100, and a dummy member DM may be disposed on a second side surface (corresponding to the above-described second holder outer side surface). In this case, the first camera module1000amay be disposed closer to the second side surface than the first side surface. In addition, the second camera module1000bmay have the first side surface adjacent to the first camera module and the second side surface opposite to the first side surface and include a driving unit (corresponding to a magnet/coil and the like) disposed between the optical member and the second side surface therein to move the optical member. That is, the second camera module1000bmay include the dummy member between the optical member and the first side surface.

Accordingly, since the dummy member DM is disposed on the second side surface, the second camera module1000bmay perform a function of an actuator using a magnetic member (for example, a magnet) in a state in which an influence of a magnetic force generated by the first camera module is minimized. In addition, in response thereto, in the first camera module1000a, the dummy member DM is also disposed adjacent to the second camera module1000b, an influence of a magnetic force generated by the second camera module1000bon a function of the first camera module1000aas an actuator may be minimized.

The flash module1530may include a light-emitting element which emits light therein. The flash module1530may be operated by operation of a camera of the mobile terminal or control of a user.

The AF device1510may include one of packages of surface light-emitting laser elements as a light-emitting part.

The AF device1510may have an AF function using a laser. The AF device1510may be mainly used in a condition in which the AF function using the image of the camera module1000is degraded, for example, in a close environment within 10 m or less or in a dark environment.

The AF device1510may include a light-emitting part, which includes a vertical-cavity surface-emitting laser (VCSEL) semiconductor element, and a light-receiving part, which converts light energy into an electrical energy, like a photodiode.

FIG.49is a perspective view illustrating a vehicle to which the camera module according to the embodiment is applied.

For example,FIG.49is an exterior view of a vehicle including a vehicle driving auxiliary device to which the camera module1000according to the embodiment is applied.

Referring toFIG.49, a vehicle700of the embodiment may include wheels13FL and13FR, which are rotated by a power source, and a predetermined sensor. Although the sensor may be a camera sensor2000, the present invention is not limited thereto.

The camera sensor2000may be a camera sensor to which the camera module1000according to the embodiment is applied. The vehicle700of the embodiment may obtain image information through the camera sensor2000which captures a front image or surrounding image, determine a situation, in which lanes are not identified, using the image information, and generate virtual lanes when the lanes are not identified.

For example, the camera sensor2000may obtain the front image by capturing an image in front of the vehicle700, and a processor (not shown) may analysis objects included in the front image to obtain the image information.

For example, when, images of lanes, adjacent vehicles, obstacles to driving, and a median strip, curb stones, street trees, and the like which correspond to indirect road indicators are included in the image captured by the camera sensor2000, the process may detect such objects so that the objects are included in the image information. In this case, the processor may obtain distance information from the objects detected through the camera sensor2000to supplement the image information.

The image information may be information about the objects of which the images are captured. The camera sensor2000may include an image sensor and an image processing module.

The camera sensor2000may process a still image or moving image obtained by the image sensor (for example, a complementary metal-oxide-semiconductor (CMOS) or charge-coupled device (CCD)).

The image processing module may extract necessary information by processing the still image or moving image obtained through the image sensor and transmit the extracted information to the processor.

In this case, the camera sensor2000may further include a stereo camera in order to improve measurement accuracy of an object and further secure information of a distance between the vehicle700and the object and the like but is not limited thereto.

While the present invention has been mainly described above with reference to embodiments, it will be understood by those skilled in the art that the present invention is not limited to the embodiments, but the embodiments are only exemplary, and various modifications and applications which are not illustrated above may be made without departing from the essential features of the present embodiments. For example, components specifically described in the embodiments may be modified and implemented. In addition, it should be interpreted that differences related to modifications and applications fall within the scope of the present invention defined by the appended claims.