KR20210054716A - Camera actuator and camera device comprising the same - Google Patents

Abstract

An embodiment of the present invention discloses a camera actuator. The camera actuator includes: a housing; a mover disposed within the housing; a rotating plate disposed between the housing and the mover; and a driving part disposed in the housing and driving the mover. The rotating plate includes a base, a first protrusion part protruding from the first surface of a base, a second protrusion part protruding from the second surface of the base, and a coupling magnet disposed on the base. A yoke is disposed on at least one of the housing and the mover. The camera actuator can be applied to ultra-slim, ultra-compact and high-resolution cameras.

Description

Camera actuator and camera device including the same TECHNICAL FIELD

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

Cameras are devices that take pictures or videos of a subject, and are installed in portable devices, drones, and vehicles. The camera device has an image stabilization (IS) function that corrects or prevents image shake caused by the user's movement to improve the quality of the image, and aligns the focal length of the lens by automatically adjusting the distance between the image sensor and the lens. It may have an auto focusing (AF) function and a zooming function that increases or decreases the magnification of a distant subject through a zoom lens.

On the other hand, the image sensor has a higher resolution as it goes to a higher pixel, resulting in a smaller pixel size. As the pixel becomes smaller, the amount of light received during the same period of time decreases. Accordingly, the higher the pixel camera, the more severe the image shake due to hand shake, which appears as the shutter speed becomes slower in a dark environment. One of the representative image stabilization (IS) technologies is optical image stabilizer (OIS), a technology that corrects motion by changing the path of light.

According to general OIS technology, it is possible to detect camera movement through a gyrosensor, etc., and tilt or move a lens based on the detected movement, or tilt or move a camera module including a lens and an image sensor. . When a lens or a camera module including a lens and an image sensor is tilted or moved for OIS, it is necessary to additionally secure a space for tilting or moving around the lens or camera module.

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

However, depending on the needs of ultra-slim and ultra-miniature camera devices, space limitations for arranging the actuators for OIS are large, and the lens or the camera module itself including the lens and image sensor has sufficient space to tilt or move for the OIS. It can be difficult to guarantee. In addition, it is desirable to increase the size of the lens in order to increase the amount of light received as the high-pixel camera increases, but there may be a limit to increasing the size of the lens due to the space occupied by the actuator for OIS.

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

The technical task to be solved by the present invention is to provide a camera actuator applicable to ultra-slim, ultra-small and high resolution cameras.

A camera actuator according to an embodiment of the present invention includes a housing; A mover disposed in the housing; A rotating plate disposed between the housing and the mover; And a driving unit disposed in the housing and driving the mover, wherein the rotation plate includes a base, a first protrusion protruding from a first surface of the base, a second protrusion protruding from a second surface of the base, and And a coupling magnet disposed on the base, and a yoke disposed on at least one of the housing and the mover.

The base may include a hole or a groove, and the coupling magnet may be disposed in the hole or the groove.

The coupling magnet may be built into the base.

The coupling magnet may be exposed to either the first surface or the second surface.

The first protrusion may be located on an imaginary line bisecting the first surface in the second axis direction.

The second protrusions 2-1 protrusions spaced apart from each other in the second axial direction; And a 2-2 protrusion.

The 2-1 protrusion and the 2-2 protrusion may overlap in the second axis direction.

The second protrusion may be located on an imaginary line bisecting the second surface in the first axis direction.

The driving unit includes a driving magnet and a driving coil, the driving magnet includes a first magnet, a second magnet, and a third magnet, and the driving coil includes a first coil, a second coil and a third coil, , The first magnet and the second magnet are symmetrically disposed about the first axis on the mover, and the first coil and the second coil are symmetrically about the first axis between the housing and the mover. The third magnet may be disposed on a bottom surface of the mover, and the third coil may be disposed on a bottom surface of the housing.

The mover, a prism; And a prism holder in which the prism is seated, wherein the prism holder includes a seating groove in which the rotating plate is seated, and the seating groove includes a first area in which the yoke is seated; A second region in which the first protrusion is seated and is in contact with the first protrusion; And a third area surrounding the first area and the second area.

The height of the third area may be smaller than the height of the second area and the height of the second area.

The camera actuator according to the embodiment includes a housing; A mover disposed in the housing; A rotating plate disposed between the housing and the mover; And a driving unit disposed in the housing and driving the mover, wherein the rotation plate includes a base, a first protrusion protruding from a first surface of the base, a second protrusion protruding from a second surface of the base, and And a yoke disposed on the base, and a coupling magnet disposed on at least one of the housing and the mover.

The camera actuator according to the embodiment includes a housing; A mover disposed in the housing; A rotating plate disposed between the housing and the mover; And a driving unit disposed in the housing and driving the mover, wherein the mover rotates in at least one of a first axis and a second axis by the rotation plate, and the rotation plate comprises the housing and the mover. It includes a first magnetic material to be in close contact with.

A second magnetic body disposed on the housing and the mover and corresponding to the first magnetic body may be further included.

The first magnetic body may be a magnet and the second magnetic body may be a yoke.

The first magnetic body and the second magnetic body are magnets and may be arranged to have different polarities to correspond to each other.

According to an embodiment of the present invention, it is possible to provide a camera actuator applicable to an ultra-slim, ultra-small, and high-resolution camera. In particular, it is possible to efficiently arrange the actuator for OIS without increasing the overall size of the camera device.

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

According to an embodiment of the present invention, it is possible to secure a sufficient amount of light by solving the size limitation of the lens, and to implement an OIS with low power consumption.

1 is a perspective view of a camera module according to an embodiment,
2A is a perspective view of the camera shown in FIG. 1 with the shield can removed,
2B is a plan view of the camera shown in FIG. 2A,
3A is a perspective view of the first camera module shown in FIG. 2A,
3B is a side cross-sectional view of the first camera module shown in FIG. 3A,
4 is an exploded perspective view of a second camera actuator according to an embodiment,
5A is a perspective view of a mover according to an embodiment,
5B is a perspective view of the mover in a different direction from FIG. 5A,
6A is a perspective view of a prism holder according to an embodiment,
6B is a bottom view of a prism holder according to the embodiment,
6C is a side view of a prism holder according to the embodiment,
7A is a perspective view of a rotating plate according to an embodiment,
Fig. 7B is a perspective view of the rotating plate in a different direction from Fig. 7A,
Figure 7c is a cross-sectional view of the rotating plate cut AA' in Figure 7a,
8A is a perspective view of a second camera actuator according to an embodiment in which a shield can and a substrate are removed,
8B is a cross-sectional view taken along BB′ in FIG. 8A,
8C is a cross-sectional view taken along CC′ in FIG. 8A,
9 is a view showing a driving unit according to the embodiment,
10A is a perspective view of a second camera actuator according to an embodiment,
10B is a cross-sectional view taken along line DD′ in FIG. 10A,
10C is an exemplary view of the movement of the second camera actuator shown in FIG. 10B,
11A is a perspective view of a second camera actuator according to an embodiment,
11B is a cross-sectional view taken along line EE′ in FIG. 11A,
11C is an exemplary view of the movement of the second camera actuator shown in FIG. 11B,
12A is a cross-sectional view of a second camera actuator according to another embodiment,
12B is a cross-sectional view of a second camera actuator according to another embodiment,
12C is a cross-sectional view of a second camera actuator according to a modified example,
12D is a cross-sectional view of a second camera actuator according to another modified example,
13A is a cross-sectional view of a rotating plate and a magnet according to another embodiment,
13B is a cross-sectional view of a rotating plate and a magnet according to another embodiment,
13C is a cross-sectional view of a rotating plate and a magnet according to a modified example,
13D is a cross-sectional view of a rotating plate and a magnet according to another modified example,
14A is an exploded view of a housing and a mover according to another embodiment,
14B is a top view of a housing and a mover according to another embodiment,
14C is a perspective view of a housing according to another embodiment,
14D is a perspective view of a prism holder according to another embodiment,
15A is an exploded view of a housing and a mover according to a modified example,
15B is a top view of a housing and a mover according to a modified example,
15C is a perspective view of a housing according to a modified example,
15D is a perspective view of a prism holder according to a modified example,
16A is an exploded view of a housing and a mover according to another embodiment,
16B is a top view of a housing and a mover according to another embodiment,
16C is a perspective view of a housing according to another embodiment,
16D is a perspective view of a prism holder according to another embodiment,
17 is a perspective view of an actuator for AF or Zoom according to another embodiment of the present invention,
18 is a perspective view of the actuator according to the embodiment shown in FIG. 17 with some configurations omitted,
19 is an exploded perspective view of the actuator according to the embodiment shown in FIG. 17 with some components omitted,
20A is a perspective view of a first lens assembly in the actuator according to the embodiment shown in FIG. 19,
20B is a perspective view of the first lens assembly shown in FIG. 20A with some components removed;
21 is a perspective view of a third lens assembly in the actuator according to the embodiment shown in FIG. 19,
22 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied,
23 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

The present invention is intended to illustrate and describe specific embodiments in the drawings, as various changes may be made and various embodiments may be provided. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as second and first may be used to describe various elements, but the elements are not limited by the terms. The terms are used only for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, the second element may be referred to as the first element, and similarly, the first element may be referred to as the second element. The term and/or includes a combination of a plurality of related listed items or any of a plurality of related listed items.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

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

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

1 is a perspective view of a camera module according to an exemplary embodiment, FIG. 2A is a perspective view of the camera module shown in FIG. 1 with a shield can removed, and FIG. 2B is a plan view of the camera module shown in FIG. 2A.

Referring to FIG. 1, the camera device 1000 may include a single or a plurality of camera modules. For example, the camera device 1000 may include a first camera module 1000A and a second camera module 1000B. The first camera module 1000A and the second camera module 1000B may be covered by a predetermined shield can 1510.

1, 2A, and 2B together, the first camera module 1000A may include a single actuator or a plurality of actuators. For example, the first camera module 1000A may include a first camera actuator 1100 and a second camera actuator 1200.

The first camera actuator 1100 may be electrically connected to the circuit board 1410 of the first group, and the second camera actuator 1200 may be electrically connected to the circuit board 1420 of the second group, not shown. However, the circuit board 1420 of the second group may be electrically connected to the circuit board 1410 of the first group. The second camera module 1000B may be electrically connected to the circuit board 1430 of the third group.

The first camera actuator 1100 may be a zoom actuator or an auto focus (AF) actuator. For example, the first camera actuator 1100 may support one or a plurality of lenses and may perform an autofocusing function or a zoom function by moving the lenses according to a control signal from a predetermined controller.

The second camera actuator 1200 may be an OIS (Optical Image Stabilizer) actuator.

The second camera module 1000B may include a fixed focal length lens disposed in a predetermined barrel (not shown). Fixed focal length lenses may be referred to as “single focal length lenses” or “single focal length lenses”.

The second camera module 1000B is disposed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving the lens unit. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, or the like, and may be applied in various ways, such as an electrostatic method, a thermal method, a bimorph method, and an electrostatic force method, but is not limited thereto.

Next, FIG. 3A is a perspective view of the first camera module shown in FIG. 2A, and FIG. 3B is a side cross-sectional view of the first camera module shown in FIG. 3A.

Referring to FIG. 3A, the first camera module 1000A is disposed on one side of the first camera actuator 1100 and the first camera actuator 1100 to function as a zooming function and an AF function, and a second camera module to function as an OIS. A camera actuator 1200 may be included.

Referring to FIG. 3B, the first camera actuator 1100 may include an optical system and a lens driver. For example, at least one of a first lens assembly 1110, a second lens assembly 1120, a third lens assembly 1130, and a guide pin 50 may be disposed in the first actuator 1100. .

Also. The first camera actuator 1100 may include a driving coil 1140 and a driving magnet 1160 to perform a high magnification zooming function.

For example, the first lens assembly 1110 and the second lens assembly 1120 may be a moving lens that moves through the driving coil 1140, the driving magnet 1160, and the guide pin 50. , The third lens assembly 1130 may be a fixed lens, but is not limited thereto. For example, the third lens assembly 1130 may perform a function of a focator that forms light at a specific position, and the first lens assembly 1110 is a third lens assembly 1130 that is a concentrator. It can perform the function of a variator to re-image the imaged image elsewhere. On the other hand, in the first lens assembly 1110, the magnification change may be large due to the large change in the distance or the image distance to the subject, and the first lens assembly 1110 as a variable factor plays an important role in the change in the focal length or magnification of the optical system. can do. On the other hand, the imaged point of the first lens assembly 1110 which is a variable factor may be slightly different depending on the location. Accordingly, the second lens assembly 1120 may perform a position compensation function for an image formed by the variable power. For example, the second lens assembly 1120 performs a function of a compensator that performs a role of accurately imaging a store imaged by the first lens assembly 1110, which is a variable factor, at the position of the actual image sensor 1190. can do.

For example, the first lens assembly 1110 and the second lens assembly 1120 may be driven by electromagnetic force due to the interaction between the driving coil 1140 and the driving magnet 1160.

In addition, a predetermined image sensor 1190 may be disposed perpendicular to the optical axis direction of the parallel light.

Next, a detailed description of the second camera actuator 1200 will be described later in FIG. 4.

In addition, the camera module according to the embodiment can implement OIS by controlling the optical path through a camera actuator, thereby minimizing the occurrence of decent or tilting, and achieving the best optical characteristics. have.

1 to 3 and the description thereof are made with the intention of explaining the overall structure and operation principle of the camera device according to the embodiment of the present invention. Therefore, the detailed configuration of the embodiment of the present invention is illustrated in FIGS. 1 to 3. It is not limited to.

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

Hereinafter, a control method and a detailed structure of the second actuator according to an embodiment of the present invention will be described in more detail.

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

Referring to FIG. 4, the second camera actuator 1200 according to the embodiment includes a shield can 1210, a housing 1220, a mover 1230, a rotating part 1240, and a driving part 1250.

The mover 1230 may include a prism holder 1231 and a prism 1232 mounted on the prism holder 1231. In addition, the rotating part 1240 includes a rotating plate 1241, a yoke part 1242 having a coupling force with the rotating plate 1241, and a coupling magnet 1243 positioned in the rotating plate 1241. Further, the driving unit 1250 includes a driving magnet 1251, a driving coil 1252, a Hall sensor unit 1253, and a substrate unit 1254.

The shield can 1210 may be positioned at the outermost side of the second camera actuator 1200 and may be positioned to surround the rotating unit 1240 and the driving unit 1250 to be described later.

The shield can 1210 may block or reduce an electromagnetic wave generated from the outside. Accordingly, the occurrence of malfunctions in the rotating unit 1240 or the driving unit 1250 may be reduced.

The housing 1220 may be located inside the shield can 1210. In addition, the housing 1220 may be located inside the substrate portion 1254 to be described later. The housing 1220 may be fitted with or fitted with the shield can 1210 to be fastened.

The housing 1220 may include a first housing side 1221, a second housing side 1222, a third housing side 1223, and a fourth housing side 1224.

The first housing side 1221 and the second housing side 1222 may be disposed to face each other. Also, the third housing side 1223 and the fourth housing side 1224 may be disposed between the first housing side 1221 and the second housing side 1222.

The third housing side 1223 may contact the first housing side 1221, the second housing side 1222, and the fourth housing side 1224. In addition, the third housing side portion 1223 may be a bottom surface of the housing 1220.

Here, the bottom surface means one side in the first direction. In addition, the first direction is the X-axis direction in the drawing and may be mixed with the second axial direction. The second direction is the Y-axis direction in the drawing and may be mixed with the first axial direction. The second direction is a direction perpendicular to the first direction. In addition, the third direction is the Z-axis direction in the drawing, and may be mixed with the third axial direction. It is a direction perpendicular to both the first direction and the second direction. Here, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are perpendicular to the optical axis and are tilted by the second camera actuator. I can. A detailed description of this will be described later.

In addition, the first housing side portion 1221 may include a first housing hole 1221a. A first coil 1252a, which will be described later, may be positioned in the first housing hole 1221a.

In addition, the second housing side portion 1222 may include a second housing hole 1222a. In addition, a second coil 1252b, which will be described later, may be positioned in the second housing hole 1222a.

The first coil 1252a and the second coil 1252b may be coupled to the substrate portion 1254. In an embodiment, the first coil 1252a and the second coil 1252b are electrically connected to the substrate portion 1254 to allow current to flow. This current is a component of the electromagnetic force that the second camera actuator can tilt with respect to the X axis.

In addition, the third housing side portion 1223 may include a third housing hole 1223a. A third coil 1252c, which will be described later, may be positioned in the third housing hole 1223a. The third coil 1252c may be coupled to the substrate portion 1254. In addition, the third coil 1252c is electrically connected to the substrate portion 1254 to allow current to flow. This current is a component of the electromagnetic force that the second camera actuator can tilt with respect to the Y axis.

The fourth housing side portion 1224 may include a first housing groove 1224a. A first yoke 1242a, which will be described later, may be disposed in a region facing the first housing groove 1224a. Accordingly, the housing 1220 may be coupled to the rotating plate 1241 by magnetic force or the like.

In addition, the housing 1220 may include a receiving portion 1225 formed by the first to fourth housing side portions 1221 to 1224. A mover 1230 may be positioned in the receiving part 1225.

The mover 1230 includes a prism holder 1231 and a prism 1232 mounted on the prism holder 1231.

The prism holder 1231 may be mounted on the receiving portion 1225 of the housing 1220. The prism holder 1231 includes a first prism outer surface to a fourth prism corresponding to the first housing side 1221, the second housing side 1222, the third housing side 1223, and the fourth housing side 1224, respectively. It may include an outer surface. A detailed description of this will be described later.

The prism 1232 may be mounted on the prism holder 1231. To this end, the prism holder 1231 may have a seating surface, and the seating surface may be formed by a receiving groove. The prism 1232 may include a reflector disposed therein. However, it is not limited thereto. In addition, the prism 1232 may reflect light reflected from the outside (eg, an object) into the camera module. In other words, the prism 1232 may change the path of the reflected light to improve spatial limitations of the first camera actuator and the second camera actuator. As such, it should be understood that the camera module may provide a high range of magnification by extending the optical path while minimizing thickness.

The rotating part 1240 includes a rotating plate 1241, a yoke part 1242 having a coupling force with the rotating plate 1241, and a coupling magnet 1243 positioned in the rotating plate 1241.

The rotating plate 1241 may be combined with the mover 1230 and the housing 1220 described above. The rotating plate 1241 may include a coupling magnet 1243 positioned therein. The rotating plate 1241 may be disposed adjacent to the optical axis. Accordingly, the actuator according to the embodiment can easily change the optical path according to the first and second axis tilts to be described later.

The rotation plate 1241 may include a first protrusion disposed spaced apart in a first direction (X-axis direction) and a second protrusion disposed spaced apart in a second direction (Y-axis direction). Also, the first protrusion and the second protrusion may protrude in opposite directions. A detailed description of this will be described later.

The yoke portion 1242 may include a plurality of yokes, and the plurality of yokes may be positioned to face each other with respect to the rotation plate 1241. In an embodiment, the yoke portion 1242 may include a first yoke 1242a and a second yoke 1242b. That is, the rotating plate 1241 may be positioned between the first yoke 1242a and the second yoke 1242b.

In addition, the first yoke 1242a may be located in the housing 1220. The first yoke 1242a may be mounted on the inner side or the outer side of the fourth housing side 1124. For example, the first yoke 1242a may be seated in a groove formed on the outer surface of the fourth housing side portion 1124. Alternatively, the first yoke 1242a may be seated in the first housing groove 1224a described above. In addition, the second yoke 1242b may be located on the outer surface of the mover 1230, particularly the prism holder 1231. With this configuration, the rotating plate 1241 is a coupling force between the inner coupling magnet 1243 and the first yoke 1242a (or the second yoke 1242b) and the housing 1220 and the mover 1230 Can be easily combined. In the present invention, the positions of the coupling magnet 1243 and the first yoke 1242 (or the second yoke 1242b) may be moved to each other, but in this embodiment, the coupling magnet 1243 is the base of the rotating plate 1241 It is located in (BS), and the description is made based on that the first yoke and the second yoke are respectively located in the housing and the mover. In addition, the above-described mutually movable structure will be described later.

The driving unit 1250 includes a driving magnet 1251, a driving coil 1252, a Hall sensor unit 1253, and a substrate unit 1254.

The driving magnet 1251 may include a plurality of magnets. In an embodiment, the driving magnet 1251 may include a first magnet 1251a, a second magnet 1251b, and a third magnet 1251c.

The first magnet 1251a, the second magnet 1251b, and the third magnet 1251c may be positioned on the outer surface of the prism holder 1231, respectively. In addition, the first magnet 1251a and the second magnet 1251b may be positioned to face each other. In addition, the third magnet 1251c may be positioned on the bottom of the outer surfaces of the prism holder 1231. A detailed description of this will be described later.

The driving coil 1252 may include a plurality of coils. In an embodiment, the driving coil 1252 may include a first coil 1252a, a second coil 1252b, and a third coil 1252c.

The first coil 1252a may be positioned to face the first magnet 1251a. Accordingly, the first coil 1252a may be positioned in the first housing hole 1221a of the first housing side portion 1221 as described above.

In addition, the second coil 1252b may be positioned to face the second magnet 1251b. Accordingly, the second coil 1252b may be positioned in the second housing hole 1222a of the second housing side portion 1222 as described above.

The first coil 1252a may be positioned to face the second coil 1252b. That is, the first coil 1252a may be positioned symmetrically with respect to the second coil 1252b and the first direction (X-axis direction). The same can be applied to the first magnet 1251a and the second magnet 1251b. That is, the first magnet 1251a and the second magnet 1251b may be symmetrically positioned with respect to the first direction (X-axis direction). In addition, the first coil 1252a, the second coil 1252b, the first magnet 1251a, and the second magnet 1251b may be disposed to at least partially overlap in the second direction (Y-axis direction). With this configuration, the X-axis tilting can be accurately performed without inclining to one side due to the electromagnetic force between the first coil 1252a and the first magnet 1251a and the electromagnetic force between the second coil 1252b and the second magnet 1251b. .

The third coil 1252c may be positioned to face the third magnet 1251c. Accordingly, the third coil 1252c may be positioned in the third housing hole 1223a of the third housing side portion 1223 as described above. The third coil 1252c generates an electromagnetic force with the third magnet 1251c, so that the mover 1230 and the rotating part 1240 may be tilted in the Y-axis with respect to the housing 1220.

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

The Hall sensor unit 1253 may include a plurality of Hall sensors. In an embodiment, the Hall sensor unit 1253 may include a first Hall sensor 1253a and a second Hall sensor 1253b. The first Hall sensor 1253a may be located inside the first coil 1253a or the second coil 1252b. The first Hall sensor 1253a may detect a change in magnetic flux inside the first coil 1253a or the second coil 1252b. Accordingly, position sensing between the first and second magnets 1251a and 1251b and the first Hall sensor 1253a may be performed. The second camera actuator according to the embodiment may control the X-axis tilt through this.

In addition, the second Hall sensor 1253b may be located inside the third coil 1253c. The second Hall sensor 1253b may detect a change in magnetic flux inside the third coil 1253c. Accordingly, position sensing between the third magnet 1251c and the second Hall sensor 1253b may be performed. The second camera actuator according to the embodiment may control the Y-axis tilt through this.

The substrate part 1254 may be located under the driving part 1250. The substrate unit 1254 may be electrically connected to the driving coil 1252 and the Hall sensor unit 1253. For example, the substrate unit 1254 may be coupled to the driving coil 1252 and the Hall sensor unit 1253 through an SMT. However, it is not limited to this method.

The substrate portion 1254 is positioned between the shield can 1210 and the housing 1220 and may be coupled to the shield can 1201 and the housing 1220. The coupling method may be variously made as described above. In addition, through the coupling, the driving coil 1252 and the hall sensor unit 1253 may be positioned within the outer surface of the housing 1220.

The board 1254 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board, a flexible printed circuit board, and a rigid flexible printed circuit board. have. However, it is not limited to these types.

5A is a perspective view of a mover according to an embodiment, FIG. 5B is a perspective view of a mover in a different direction from 5A, FIG. 6A is a perspective view of a prism holder according to the embodiment, and FIG. 6B is a bottom view of a prism holder according to the embodiment And Figure 6c is a side view of a prism holder according to the embodiment.

5A and 5B, the prism 1232 may be mounted on the prism holder. The prism 1232 may be a right-angled prism as a reflector, but is not limited thereto.

The prism 1232 may have a protrusion 1232a on a part of the outer surface. The prism 1232 may be easily coupled to the prism holder through the protrusion 1232a. In addition, the prism 1232 may be mounted on the mounting surface of the prism holder on the bottom surface 1232b. Accordingly, the bottom surface 1232b of the prism 1232 may correspond to the seating surface of the prism holder. In an embodiment, the bottom surface 1232b may be formed as an inclined surface in the same manner as the prism holder is mounted. Accordingly, it is possible to prevent the prism from being separated from the prism holder according to the movement of the prism at the same time as the prism moves according to the movement of the prism holder.

6A to 6C, the prism holder 1231 may include a seating surface 1231k on which the prism 1232 is seated. The seating surface 1231k may be an inclined surface. In addition, the prism holder 1231 may include a jaw portion 1231b on the seating surface 1231k. In addition, in the prism holder 1231, the jaw portion 1231b may be coupled to the protrusion 1232a of the prism 1232.

The prism holder 1231 may include a plurality of outer surfaces. For example, the prism holder 1231 may include a first prism outer surface 1231S1, a second prism outer surface 1231S2, a third prism outer surface 1231S3, and a fourth prism outer surface 1231S4.

The first prism outer surface 1231S1 may be positioned to face the second prism outer surface 1231S2. That is, the first prism outer surface 1231S1 may be symmetrically disposed with respect to the second prism outer surface 1231S2 and the first direction (X-axis direction).

The first prism outer surface 1231S1 may be positioned to face the first housing side portion 1221. In addition, the second prism outer surface 1231S2 may be positioned to face the second housing side portion 1222.

In addition, the first prism outer surface 1231S1 may include a first mounting groove 1231S1a. In addition, the second prism outer surface 1231S2 may include a second seating groove 1231S2a. The first mounting groove 1231S1a and the second mounting groove 1231S2a may be symmetrically disposed with respect to the first direction (X-axis direction).

In addition, a first magnet 1251a may be disposed in the first mounting groove 1231S1a, and a second magnet 1251b may be disposed in the second mounting groove 1231S2a. The first magnet 1251a and the second magnet 1251b may also be symmetrically disposed with respect to the first direction (X-axis direction).

As described above, by the positions of the first and second seating grooves and the first and second magnets, the electromagnetic force induced by each magnet is the same axis as the first prism outer surface (S1231S1) and the second prism outer surface (1231S2). It can be provided on. For example, the area applied on the outer surface of the first prism (S1231S1) (eg, the strongest electromagnetic force) and the area applied on the outer surface of the second prism (S1231S1) (eg, the strongest electromagnetic force) It may be located on an axis parallel to the second direction (Y-axis direction). Accordingly, the X-axis tilting can be accurately performed.

A first magnet 1251a may be disposed in the first mounting groove 1231S1a, and a second magnet 1251b may be disposed in the second mounting groove 1231S2a.

The third prism outer surface 1231S3 is in contact with the first prism outer surface 1231S1 and the second prism outer surface 1231S2, and is in contact with the first prism outer surface 1231S1 and the second prism outer surface 1231S2. It may be an outer surface extending in two directions (Y-axis direction). In addition, the third prism outer surface 1231S3 may be positioned between the first prism outer surface 1231S1 and the second prism outer surface 1231S2. The third prism outer surface 1231S3 may be a bottom surface of the prism holder 1231.

In addition, the third prism outer surface 1231S3 may include a third seating groove 1231S3a. A third magnet 1251c may be disposed in the third seating groove 1231S3a. The third prism outer surface 1231S3 may be positioned to face the third housing side 1223. In addition, the third housing hole 1223a may partially overlap the third seating groove 1231S3a in the first direction (X-axis direction). Accordingly, the third magnet 1251c in the third seating groove 1231S3a and the third coil 1252c in the third housing hole 1223a may be positioned to face each other. In addition, the third magnet 1251c and the third coil 1252c generate electromagnetic force, so that the second camera actuator may tilt the Y-axis.

Further, while the X-axis tilt is performed by a plurality of magnets (first and second magnets 1251a and 1251b), the Y-axis tilt may be performed only by the third magnet 1251c. In an embodiment, the third mounting groove 1231S3a may have a larger width than the first mounting hole 1231S1a or the second mounting hole 1231S2a. With this configuration, the Y-axis tilt can be performed with current control similar to the X-axis tilt.

The fourth prism outer surface 1231S4 is in contact with the first prism outer surface 1231S1 and the second prism outer surface 1231S2, and is in a first direction from the first prism outer surface 1231S1 and the second prism outer surface 1231S2. It may be an outer surface extending in the (X-axis direction). In addition, the fourth prism outer surface 1231S4 may be positioned between the first prism outer surface 1231S1 and the second prism outer surface 1231S2.

The fourth prism outer surface 1231S4 may include a fourth seating groove 1231S4a. A rotation plate 1241 may be positioned in the fourth mounting groove 1231S4a.

The fourth mounting groove 1231S4a may be positioned to face the first surface of the rotating plate. In addition, the fourth mounting groove 1231S4a may include a plurality of regions. A first area AR1, a second area AR2, and a third area AR3 may be included.

The first area AR1 may be located in the center of the outer surface 1231S4 of the fourth prism. In an embodiment, the first area AR1 may be located at the center of the third area AR3. In addition, a second yoke 1242b may be located in the first area AR1. In other words, the second yoke 1242b may be seated in the outer surface 1231S4 of the fourth prism.

In addition, the second area AR2 may come into contact with the first area AR1, and there may be a plurality of second areas AR2. The second area AR2 may have a number corresponding to the number of first protrusions.

In addition, according to an embodiment, the second area AR2 may be spaced apart from each other in the first direction (X-axis direction) with the first area AR1 interposed therebetween. Also, the plurality of second regions AR2 may overlap in the first direction (X-axis direction).

A protrusion (first protrusion) of the rotation plate 1241 may be positioned in the second area AR2. In an embodiment, the first protrusion of the rotating plate 1241 is located in the second area AR2 and may contact the prism holder. In other words, the first protrusion may contact the outer surface 1231S4 of the fourth prism. Accordingly, the first protrusion may perform the X-axis tilt within the second area AR2 while in contact with the fourth prism outer surface 1231S4.

In addition, the length h1 of the first region AR1 in the second direction (Y-axis direction) may be greater than the length h2 in the second direction (Y-axis direction) of the second region AR2. With this configuration, it is possible to improve the coupling force between the rotating plate 1241 and the prism holder 1231 through the second yoke 1242b while securing a sufficient space for the second yoke 1242b to be seated.

The third area AR3 may be located outside the first area AR1 and the second area AR2. In addition, the third area AR3 may be located under the outer surface of the fourth prism 1231S4 (eg, an area in contact with the outer surface of the first prism).

In an embodiment, the third area AR3 may not overlap the first area AR1 and the second area AR2 in the third direction. In other words, the third area AR3 may not overlap the protrusion or the second yoke in the third direction. The base of the moving plate may be seated in the third area AR3.

In an embodiment, the first area AR1, the second area AR2, and the third area AR3 may have different heights in the third direction (Z-axis direction) from the outer surface 1231S4 of the fourth prism. A detailed description of this will be described later.

7A is a perspective view of a rotating plate according to an embodiment, FIG. 7B is a perspective view of the rotating plate in a direction different from that of FIG. 7A, and FIG. 7C is a cross-sectional view of the rotating plate cut by AA′ in FIG. 7A.

7A to 7C, the rotation plate 1241 according to the embodiment includes a base BS, a first protrusion PR1 protruding from the first surface 1241a of the base BS, and the base BS. A second protrusion PR2 protruding from the second surface 1241b may be included. Depending on the structure, the surface of the first protrusion and the second protrusion may be opposite, but the description will be made based on the above-described contents in this specification.

First, the base BS may include a first surface 1241a and a second surface 1241b facing the first surface 1241a. That is, the first surface 1241a may be spaced apart from the second surface 1241b in a third direction (Z-axis direction), and may be an outer surface facing each other or facing each other in the rotating plate 1241.

According to an embodiment, the base BS may have a coupling magnet disposed therein. To this end, the base BS may include a hole or a groove, and the coupling magnet may be seated in the above-described hole or groove. In this embodiment, a description will be made based on the coupling magnet groove. And a description of the position of the hole or groove will be described later.

The rotation plate 1241 may include a first protrusion PR1 extending to one side on the first surface 1241a. According to the embodiment, the first protrusion PR1 may protrude from the first surface 1241a toward the mover. A plurality of first protrusions PR1 may include a 1-1 protrusion PR1a and a 1-2 protrusion PR1b.

The 1-1 th protrusion PR1a and the 1-2 th protrusion PR1b may be positioned side by side in the first direction (X-axis direction). In other words, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may overlap in the first direction (X-axis direction). In addition, in the embodiment, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be bisected by a virtual line extending in the first direction (X-axis direction).

In addition, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b have grains, and may have, for example, a hemispherical shape. In addition, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may contact the mover at a point most spaced apart from the first surface 1241a of the base BS.

In addition, the rotation plate 1241 may include a second protrusion PR2 extending to one side on the second surface 1241a. According to the embodiment, the second protrusion PR2 may protrude toward the housing from the second surface 1241b. In addition, there are a plurality of second protrusions PR2, and may include a 2-1 protrusion PR2a and a 2-2 protrusion PR2b in the embodiment.

The 2-1 protrusion PR2a and the 2-2 protrusion PR2b may be positioned side by side in the second direction (Y-axis direction). That is, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may overlap in the second direction (Y-axis direction). In addition, in the embodiment, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may be bisected by a virtual line extending in the second direction (Y-axis direction).

The 2-1 protrusion PR2a and the 2-2 protrusion PR2b may have a curvature, and may have, for example, a hemispherical shape. In addition, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may contact the housing at a point most spaced apart from the second surface 1241b of the base BS.

The 1-1 th protrusion PR1a and the 1-2 th protrusion PR1b may be located in a region between the 2-1 protrusion PR2a and the 2-2 protrusion PR2b in the second direction. According to an embodiment, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b are located in the center of the space between the 2-1 protrusion PR2a and the 2-2 protrusion PR2b in the second direction. Can be located. With this configuration, the actuator according to the embodiment may have the same range of the angle of the X-axis tilt with respect to the X-axis. In other words, the rotation plate 1241 is based on the X-axis of the range in which the mover can tilt the X-axis (eg, positive/negative range) based on the 1-1 protrusion PR1a and the 1-2 protrusion PR1b. It can be provided in the same way.

In addition, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may be located in a region between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b in the first direction. According to an embodiment, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b are disposed in the center of the space between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b in the first direction. Can be located. With this configuration, the actuator according to the embodiment may have the same range of the Y-axis tilt angle based on the Y-axis. In other words, based on the 2-1 protrusion PR2a and the 2-2 protrusion PR2b, the rotating plate 1241 and the mover have the Y-axis tiltable range (eg, positive/negative range) based on the Y-axis. It can be provided in the same way.

Specifically, the first surface 1241a may include a first outer surface M1, a second outer surface M2, a third outer surface M3, and a fourth outer surface M4. The first outer surface M1 and the second outer surface M2 may face each other, and the third outer surface M3 and the fourth outer surface M4 may face each other. In addition, a third outer surface M3 and a fourth outer surface M4 may be positioned between the first outer surface M1 and the second outer surface M2. In addition, the first outer surface M1 and the second outer surface M2 are perpendicular to the first direction (X-axis direction), but the third outer surface M3 and the fourth outer surface M4 are in the first direction (X). It can be parallel to the axial direction).

In this case, the first protrusion PR1 may be positioned on the first virtual line VL1. Here, the first virtual line LV1 is a line bisecting the first outer surface M1 and the second outer surface M2. Accordingly, the rotation plate 1241 may easily perform the X-axis tilt through the first protrusion PR1. In addition, since the rotation plate 1241 performs the X-axis tilt based on the first virtual line VL1, the rotational force may be uniformly applied to the rotation plate 1241. Accordingly, the X-axis tilt can be precisely performed and the reliability of the device can be improved.

Also, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be symmetrically disposed with respect to the first virtual line VL1 and the second virtual line VL2. Alternatively, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be symmetrically positioned with respect to the first central point C1. With this configuration, the support force supported by the first protrusion PR1 may be equally applied to the upper and lower sides based on the second virtual line VL2 when the X-axis is tilted. Accordingly, the reliability of the rotating plate can be improved. Here, the second virtual line VL2 is a line bisecting the third outer surface M3 and the fourth outer surface M4. In addition, the first central point C1 may be an intersection of the first virtual line VL1 and the second virtual line VL2. Alternatively, it may be a point corresponding to the center of gravity according to the shape of the rotating plate 1241.

In addition, the second surface 1241b may include a fifth outer surface M1 ′, a sixth outer surface M2 ′, a seventh outer surface M3 ′, and an eighth outer surface M4 ′. The fifth outer surface M1' and the sixth outer surface M2' may face each other, and the seventh outer surface M3' and the eighth outer surface M4' may face each other. In addition, a seventh outer surface M3' and an eighth outer surface M4' may be positioned between the fifth outer surface M1' and the sixth outer surface M2'. And the fifth outer surface (M1') and the sixth outer surface (M2') are perpendicular to the first direction (X-axis direction), but the seventh outer surface (M3') and the eighth outer surface (M4') are the first. It can be parallel to one direction (X-axis direction).

In addition, since the rotation plate 1241 performs the Y-axis tilt based on the fourth virtual line VL2 ′, the rotation force may be uniformly applied to the rotation plate 1241. Accordingly, the Y-axis tilt can be precisely performed and the reliability of the device can be improved.

In addition, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may be symmetrically disposed on the third virtual line VL1 ′ on the fourth virtual line VL2 ′. Alternatively, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may be symmetrically positioned with respect to the second central point C1 ′. With this configuration, the support force supported by the second protrusion PR2 during Y-axis tilt may be equally applied to the upper and lower sides of the rotating plate based on the fourth virtual line VL2'. Accordingly, the reliability of the rotating plate can be improved. Here, the third imaginary line LV1' is a line bisecting the fifth outer surface M1' and the sixth outer surface M2'. In addition, the second central point C1 ′ may be an intersection of the third virtual line VL1 ′ and the fourth virtual line VL2 ′. Alternatively, it may be a point corresponding to the center of gravity according to the shape of the rotating plate 1241.

According to an embodiment, the base BS may include a coupling magnet groove 1241h inside. As described above, the coupling magnet 1243 may be seated in the coupling magnet groove 1241h. In addition, the coupling magnet groove 1241h may be located on any one of the first surface 1241a and the second surface 1241b. In other words, the coupling magnet 1243 may be exposed on one of the first surface 1241a and the second surface 1241b. In the present embodiment, a description will be made on the basis that the coupling magnet groove 1241h is located on the second surface 1241b.

According to an embodiment, the coupling magnet 1243 may be positioned between the 2-1 protrusion PR2a and the 2-2 protrusion PR2b. In this case, the coupling magnet 1243 may partially overlap the first protrusion PR1 and the third direction (Z-axis direction). In addition, the coupling magnet 1243 may not overlap with the first protrusion PR1 in the third direction (Z-axis direction). That is, since the coupling magnet 1243 is exposed from the second surface 1241b, the length and the like may be changed regardless of the position of the first protrusion PR1 in the base BS.

In addition, in the embodiment, since the coupling magnet 1243 is seated and exposed in the coupling magnet groove 1241h formed on the second surface 1241b, the coupling magnet 1243 has a second protrusion PR2 and a second direction (Y-axis). Direction), but may be disposed so as not to overlap in the first direction (X-axis direction). That is, the coupling magnet 1243 may be positioned between the 2-1 protrusion PR2a and the 2-2 protrusion PR2b and be spaced apart from the 2-1 protrusion PR2a and the 2-2 protrusion PR2b. have. Accordingly, the coupling magnet 1243 may not be in contact with the 2-1 protrusion PR2a and the 2-2 protrusion PR2b.

According to an embodiment, the length DR1 in the first direction (X-axis direction) of the coupling magnet 1243 is in the first direction (X-axis) between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b. Direction) may be smaller than the separation distance DR2. As a result, the coupling magnet 1243 has a length in the maximum first direction (X-axis direction), so that the coupling force between the rotating plate 1241 and the mover 1230 and the coupling force between the rotating plate 1241 and the housing 1220 Can improve. Accordingly, even if the X-axis tilt and Y-axis tilt are performed, the positions of the rotating plate 1241 and the mover 1230 in the housing 1220 can be easily maintained.

In addition, since the coupling magnet 1243 is seated in the coupling magnet groove 1241h formed on the second surface 1241b, the first direction (X) between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b The separation distance DR2 in the axial direction) may be variously changed. Similarly, the length DR1 of the coupling magnet 1243 may be variously changed in the first direction (X-axis direction). Accordingly, the rotating plate according to the embodiment can improve design freedom.

However, in the second direction (Y-axis direction) between the 2-1 protrusion PR2a and the 2-2 protrusion PR2b, the length ML2 is in the second direction (Y-axis direction) of the coupling magnet 1243. It may be larger than the length (ML1). According to this configuration, the rotation plate 1241 according to the embodiment is supported only through the base when the second protrusion is tilted, so that the reliability of the device may be improved.

FIG. 8A is a perspective view of a second camera actuator according to an embodiment in which the shield can and the substrate are removed, FIG. 8B is a cross-sectional view taken along BB′ in FIG. 8A, and FIG.

8A to 8C, the first coil 1252a is located on the first housing side 1221, and the first magnet 1251a is located on the first prism outer surface 1231S1 of the prism holder 1231. I can. Accordingly, the first coil 1252a and the first magnet 1251a may be positioned to face each other. The first magnet 1251a may partially overlap the first coil 1252a in the second direction (Y-axis direction).

In addition, the second coil 1252b may be positioned on the second housing side portion 1222, and the second magnet 1251b may be positioned on the second prism outer surface 1231S2 of the prism holder 1231. Accordingly, the second coil 1252b and the second magnet 1251b may be positioned to face each other. The second magnet 1251b may at least partially overlap the second coil 1252b in the second direction (Y-axis direction).

In addition, the first coil 1251a and the second coil 1252b overlap in the second direction (Y-axis direction), and the first magnet 1251a and the second magnet 1251b are in the second direction (Y-axis direction). Can be nested.

With this configuration, the electromagnetic force applied to the outer surface of the prism holder (the first prism outer surface and the second prism outer surface) is positioned on the parallel axis in the second direction (Y-axis direction), so that the X-axis tilt is accurate and precise. Can be done.

In addition, the second protrusions PR2a and PR2b of the rotating plate 1241 may contact the first housing groove 1224a of the housing 1220. In addition, when the X-axis tilt is performed, the second protrusions PR2a and PR2b may be the reference axis (or rotation axis) of the tilt. Accordingly, the rotating plate 1241 and the mover 1230 may move up and down.

In addition, according to an embodiment, the fourth housing side portion 1224 may include the first housing groove 1224a and the second housing groove 1224b described above. In addition, the fourth housing side portion 1224 may include an inner side 1224-1 and an outer side 1224-2. The inner surface 1224-1 of the fourth housing side 1224 may face the rotating plate 1241 or the mover 1230. In addition, the outer surface 1224-2 of the fourth housing side portion 1224 may face the shield can.

In an embodiment, the first housing groove 1224a may be located on the inner surface 1224-1 of the fourth housing side portion 1224. The first housing groove 1224a may correspond to a shape in which one side is opened in the inner surface 1224-1 of the fourth housing side portion 1224. That is, the first housing groove 1224a may have a structure opened from one end of the inner surface 1224-1 of the fourth housing side portion 1224 toward the first housing side portion. Accordingly, the thickness of the fourth housing side portion 1224 in the third direction (Z-axis direction) from the top may be smaller than the thickness in the third direction (Z-axis direction) from the bottom. With this configuration, the mover 1230 and the second protrusion PR2 of the rotating plate 1241 coupled with the mover 1230 slides from the top to the bottom so that it can be easily seated in the first housing groove 1224a. That is, the actuator according to the embodiment can improve ease of assembly.

In addition, the outer surface 1224-2 of the fourth housing side portion 1224 may include a second housing groove or a yoke hole. According to an embodiment, the outer surface 1224-2 of the fourth housing side portion 1224 may include a second housing groove 1224b, which will be described based on this.

The second housing groove 1224b may be located at the center of the outer surface 1224-2 of the fourth housing side 1224. The second housing groove 1224b may at least partially overlap the first housing groove 1224a in the third direction (Z-axis direction). At this time, the second housing groove 1224b is disposed to overlap the second protrusion PR2, the coupling magnet 1243, the first region AR1, and the second yoke 1242b in the third direction (Z-axis direction). Can be. With this configuration, the coupling magnet 1243, the first yoke 1242a, and the second yoke 1242b are located on the same line in one direction (eg, the third direction), so that the bonding force between them can be further improved.

In addition, the contact point between the second protrusion PR2 and the fourth housing side 1224 and the center of the second housing groove 1224b overlap in the third direction (Z-axis direction) or are located on an axis parallel to the third direction. can do. Accordingly, the actuator according to the embodiment may improve the accuracy of the X-axis tilt through the second protrusion PR2.

In addition, the first Hall sensor 1253a may be positioned outside for electrical connection and coupling with the substrate 1254 as described above. However, it is not limited to this position.

In addition, the third coil 1251c may be positioned on the third housing side 1223, and the third magnet 1252c may be positioned on the third prism outer surface 1231S3 of the prism holder 1231. The third coil 1251c and the third magnet 1252c may at least partially overlap in the first direction (X-axis direction). Accordingly, the strength of the electromagnetic force between the third coil 1251c and the third magnet 1252c can be easily controlled.

The rotation plate 1241 may be positioned on the outer surface 1231S4 of the fourth prism of the prism holder 1231 as described above. The rotating plate 1241 may be seated in the fourth seating groove 1231S4a on the outer surface of the fourth prism. As described above, the fourth seating groove 1231S4a includes a first area AR1 located at the center in the first direction (X-axis direction), and a second area AR2 located above and below the first area AR1. And a third area AR3 positioned outside the first area AR1 and the second area AR2.

A second yoke 1242b is disposed in the first area AR1 to provide a coupling force between the rotating plate 1241 and the magnetic force.

In addition, the second area AR2 may be symmetrically positioned in a first direction (X-axis direction) with respect to the first area AR1. The 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be seated in the second area AR2. Accordingly, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may contact the fourth mounting groove 1231S4a. In particular, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may contact the outer surface of the fourth prism in the second area AR2.

Also, the third area AR3 may be disposed outside the first area AR1 and the second area AR2. In addition, a part of the base BS of the rotating plate 1241 may be positioned in the third area AR3.

9 is a view showing a driving unit according to an embodiment.

Referring to FIG. 9, as described above, the driving unit 1250 includes a driving magnet 1251, a driving coil 1252, a Hall sensor unit 1253, and a substrate unit 1254.

In addition, as described above, the driving magnet 1251 may include a first magnet 1251a, a second magnet 1251b, and a third magnet 1251c providing driving force by electromagnetic force. The first magnet 1251a, the second magnet 1251b, and the third magnet 1251c may be positioned on the outer surface of the prism holder 1231, respectively.

In addition, the driving coil 1252 may include a plurality of coils. In an embodiment, the driving coil 1252 may include a first coil 1252a, a second coil 1252b, and a third coil 1252c.

The first coil 1252a may be positioned to face the first magnet 1251a. Accordingly, the first coil 1252a may be positioned in the first housing hole 1221a of the first housing side portion 1221 as described above. In addition, the second coil 1252b may be positioned to face the second magnet 1251b. Accordingly, the second coil 1252b may be positioned in the second housing hole 1222a of the second housing side portion 1222 as described above.

The second camera actuator according to the embodiment rotates the mover 1230 in the first axis (X-axis direction) or the second axis (Y-axis direction) by electromagnetic force between the driving magnet 1251 and the driving coil 1252. When implementing OIS, it is possible to provide the best optical characteristics by minimizing the occurrence of decent or tilt.

In addition, according to the embodiment, through the rotation plate 1241 of the rotation unit 1240 disposed between the housing 1220 and the mover 1230, the size limit of the actuator is eliminated by implementing OIS, thereby providing an ultra-slim, ultra-compact camera actuator and the same. It is possible to provide a camera module to include.

The substrate portion 1254 may include a first substrate side portion 1254a, a second substrate side portion 1254b, and a third substrate side portion 1254c.

The first substrate side 1254a and the second substrate side 1254b may be disposed to face each other. In addition, the third substrate side portion 1254c may be positioned between the first substrate side portion 1254a and the second substrate side portion 1254b.

In addition, the first substrate side 1254a may be positioned between the first housing side and the shield can, and the second substrate side 1254b may be positioned between the second housing side and the shield can. In addition, the third substrate side portion 1254c may be positioned between the third housing side portion and the shield can, and may be a bottom surface of the substrate portion 1254.

The first substrate side 1254a may be coupled to and electrically connected to the first coil 1252a. In addition, the first substrate side portion 1254a may be coupled to the first Hall sensor 1253a and be electrically connected.

The second substrate side 1254b may be coupled to and electrically connected to the second coil 1252b. In addition, it should be understood that the second substrate side 1254b may be coupled to and electrically connected to the first Hall sensor.

The third substrate side 1254c may be coupled to and electrically connected to the third coil 1252c. In addition, the third substrate side portion 1254c may be coupled to and electrically connected to the second Hall sensor 1253b.

10A is a perspective view of a second camera actuator according to an embodiment, FIG. 10B is a cross-sectional view taken along line DD′ in FIG. 10A, and FIG. 10C is an exemplary view of movement of the second camera actuator shown in FIG. 10B.

10A to 10C, the Y-axis tilt may be performed. That is, the OIS can be implemented by rotating in the first direction (X-axis direction).

In an embodiment, the third magnet 1251c disposed under the prism holder 1231 forms an electromagnetic force with the third coil 1252c to form a rotating plate 1241 and a mover 1230 in the first direction (X-axis direction). ) Can be tilted or rotated.

Specifically, the housing and the mover 1230 may be coupled to each other by the coupling magnet 1243 in the rotating plate 1241. In addition, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be spaced apart in the first direction (X-axis direction) to support the mover 1230. In addition, the rotation plate 1241 may rotate or tilt the second protrusion PR2 protruding toward the housing in the first direction (X-axis direction) with respect to the reference axis (or rotation axis).

For example, the first electromagnetic force (F1A, F1B) between the third magnet (1251c) disposed in the third seating groove and the third coil part (1252c) disposed on the side of the third substrate X OIS can be implemented while rotating the first angle θ1 in the axial direction (X1->X1a). In addition, the mover 1230 is moved in the X-axis direction by the first electromagnetic force (F1A, F1B) between the third magnet 1251c disposed in the third seating groove and the third coil part 1252c disposed on the side of the third substrate. As a result, the OIS can be implemented while rotating at the first angle θ1 (X1->X1b). The first angle θ1 may be ±1° to 3°. However, it is not limited thereto.

11A is a perspective view of a second camera actuator according to an embodiment, FIG. 11B is a cross-sectional view taken along line EE′ in FIG. 11A, and FIG. 11C is an exemplary view of movement of the second camera actuator shown in FIG. 11B.

11A to 11C, OIS may be implemented while the mover 1230 is tilted or rotated in the Y-axis direction.

In an embodiment, the first magnet 1251a and the second magnet 1251b disposed on the prism holder 1231 form an electromagnetic force with the first coil 1252a and the second coil 1252b in the second direction ( The rotating plate 1241 and the mover 1230 may be tilted or rotated in the Y-axis direction).

Specifically, the housing and the mover 1230 may be coupled to each other by the coupling magnet 1243 in the rotating plate 1241. In addition, as described above, the plurality of first protrusions PR1 may be spaced apart in a first direction (X-axis direction) to support the mover 1230. In addition, the 2-1 th protrusion PR2a and the 2-2 th protrusion PR2b may contact the housing 1220 to support the housing 1220.

In addition, the rotation plate 1241 may rotate or tilt the first protrusion PR1 protruding toward the mover 1230 in the first direction (X-axis direction) with respect to the reference axis (or rotation axis).

For example, the second electromagnetic force F2A between the first and second magnets 1251a and 1251b disposed in the first mounting groove and the first and second coil units 1252a and 1252b disposed on the first and second substrate sides, OIS can be implemented while rotating the mover 1230 by the second angle θ2 in the Y-axis direction by F2B) (Y1->Y1a). In addition, the second electromagnetic force (F2A, F2B) between the first and second magnets 1251a and 1251b disposed in the first mounting groove and the first and second coil units 1252a and 1252b disposed on the side of the first and second substrates OIS can be implemented while rotating the mover 1230 by the second angle θ2 in the Y-axis direction (Y1->Y1b). The second angle θ2 may be ±1° to 3°. However, it is not limited thereto.

As described above, the second actuator according to the embodiment moves the mover 1230 in the first direction (X-axis direction) or the second direction (Y-axis direction) by electromagnetic force between the driving magnet in the prism holder and the driving coil disposed in the housing. By controlling the rotation, it is possible to minimize the occurrence of decent or tilt when implementing OIS and provide the best optical characteristics. In addition, as described above,'Y-axis tilt' means rotating or tilting in the first direction (X-axis direction), and'X-axis tilt' means rotating or tilting in the second direction (Y-axis direction). do.

12A is a cross-sectional view of a second camera actuator according to another embodiment, FIG. 12B is a cross-sectional view of a second camera actuator according to another embodiment, and FIG. 12C is a cross-sectional view of a second camera actuator according to a modified example, and FIG. 12D Is a cross-sectional view of a second camera actuator according to another modification.

Referring to FIG. 12A, the first area AR1 ″ of the fourth mounting groove 1231S4a may have a different length than the second area AR2. The length W1 of the third area AR3 in the third direction (Z-axis direction) may be smaller than the length W2 in the third direction (Z-axis direction) of the second area AR2.

In addition, the length W2 in the third direction (Z-axis direction) of the second area AR2 may be smaller than the length W3 in the third direction (Z-axis direction) of the first area AR``.

In an embodiment, the fourth seating groove 1231S4a in the first area AR1`` may include a mover protrusion 1231PR extending toward the rotating plate 1241. A second yoke 122b may be disposed between the mover protrusion 1231PR and the rotation plate 1241. In addition, the second yoke 1242b may contact the rotating plate 1241. Accordingly, the coupling force between the rotating plate 1241 and the mover 1230 may be improved. In addition, since the rotating plate 1241 is in contact with the second yoke 1242b, the supporting force of the rotating plate 1241 with respect to the mover 1230 may be improved.

Referring to FIG. 12B, the first area AR1 ″ of the fourth mounting groove 1231S4a may have a different length than the second area AR2. The length W1 of the third area AR3 in the third direction (Z-axis direction) may be smaller than the length W2 in the third direction (Z-axis direction) of the second area AR2.

In addition, the length W2 in the third direction (Z-axis direction) of the second area AR2 may be greater than the length W3 in the third direction (Z-axis direction) of the first area AR``.

In an embodiment, the fourth seating groove 1231S4a in the first area AR1`` may include a mover groove formed inside the mover 1230. A second yoke 122b may be disposed in the mover groove. In addition, the second yoke 1242b may form the same surface as the outer surface of the second area AR2 and the outer surface of the first area AR1``. Accordingly, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be located on the first area AR1`` and the second area AR2, and the first area AR`) And the second area AR2 can freely change the size. Accordingly, the tilt in the second direction (Y-axis direction) or the X-axis tilt can be accurately performed according to the size.

In addition, when the rotating plate 1241 is made of metal, a sufficient distance from the coupling magnet 1243 may be secured to prevent an electrical short.

Referring to FIG. 12C, in the second camera actuator according to the modified example, the coupling magnet may include any one of a first coupling magnet 1243a and a second coupling magnet 1243b. In an embodiment, the first coupling magnet 1243a may be seated in the second housing groove 1224b of the housing. In addition, the second coupling magnet 1242b may be seated in the fourth seating groove 1231S4a of the mover 1230.

In addition, according to the embodiment, the yoke 1242 ′ may be located in the base BS. Accordingly, in the present embodiment, the yoke 1242 ′ may be coupled to the first coupling magnet 1243a or the second coupling magnet 1243b by electromagnetic force.

In addition, the yoke 1242 ′ may be equally applied to the description of various positions of the coupling magnet described in the present name.

Referring to FIG. 12D, in the actuator according to another modification, a yoke or a coupling magnet may not be located in the base BS of the rotating plate 1241.

In addition, the coupling magnet may include a first coupling magnet 1243a and a second coupling magnet 1243b. In addition, in the embodiment, the first coupling magnet 1243a and the second coupling magnet 1243b may be respectively seated in any one of the second housing groove 1224b and the fourth seating groove 1231S4a of the mover 1230. . In addition, the first coupling magnet 1243a and the second coupling magnet 1243b may be positioned so that different polarities correspond to each other. For example, the N pole of the first coupling magnet 1243a may be positioned to correspond to the S pole of the second coupling magnet 1243b. Or it could be the opposite. With this configuration, a coupling force due to polarity may be generated between the first coupling magnet 1243a and the second coupling magnet 1243b.

In addition, in an embodiment, the rotating plate 1241 may include a first magnetic body that is in close contact with the housing and the mover. In addition, a second magnetic body corresponding to the first magnetic body may be disposed in one of the housing and the mover. The first and second magnetic bodies may be magnets, and if the first magnetic body is a magnet, the second magnetic body may be a yoke. Accordingly, the housing, the mover, and the rotating plate can be coupled by magnetic force. FIG. 13A is a cross-sectional view of a rotating plate and a magnet according to another embodiment, and FIG. 13B is a cross-sectional view of a rotating plate and a magnet according to another embodiment. 13C is a cross-sectional view of a rotating plate and a magnet according to a modified example, and FIG. 13D is a cross-sectional view of a rotating plate and a magnet according to another modified example.

13A, the coupling magnet 1243 may be positioned between the first protrusion PR1 and the second protrusion PR2 of the rotating plate 1241 in the base BS. In addition, a magnet receiving portion 1241k may be included inside the base BS. In addition, a coupling magnet 1243 may be positioned in the magnet receiving portion 1241k.

Accordingly, the coupling magnet 1243 may have various sizes regardless of the sizes of the first protrusion PR1 and the second protrusion PR2. For example, the coupling magnet 1243 has a length DR1 in a first direction (X-axis direction) in a first direction (X-axis direction) between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b. It may be greater than the separation distance DR2. In other words, the rotating plate 1241 can easily improve the coupling force between the adjacent mover 1230 and the housing 1220.

In addition, the coupling force between the movers through the coupling magnet 1243 and the coupling between the housing 1220 may be uniformly obtained. Accordingly, it is possible to improve the reliability of each component.

In addition, the base BS may include a first surface 1241a and a second surface 1241b as described above. In addition, it may include a third surface 1241c and a fourth surface 1241d positioned between the first surface 1241a and the second surface 1241b and facing each other. The third surface 1241c and the fourth surface 1241d may be disposed to face each other in a third direction (Z-axis direction).

In an embodiment, the coupling magnet 1243 may be symmetrically disposed by each of the first vertical line K1 and the second vertical line K2. In other words, the coupling magnet 1243 may have the same separation distance from the first surface 1241a and the separation distance from the second surface 1241b in the base BS. In addition, the coupling magnet 1243 may have the same separation distance from the third surface 1241c and the fourth surface 1241d in the base BS. Due to this configuration, the weight is not concentrated in one side or one direction by the coupling magnet 1243, so that the base BS can uniformly receive a resistance force when the first and second axes are tilted. Accordingly, the actuator according to the embodiment may provide more precise axis tilt control. Here, the first vertical line K1 is an imaginary line dividing the first surface 1241a and the second surface 1241b, and the second vertical line K2 is the third surface 1241c and the fourth surface 1241d. It is an imaginary line that is bisected.

13B, the base BS may include a magnet accommodating portion 1241k'. In an embodiment, a partial region of the base BS may be opened on the first surface 1241a and the second surface 1241b by the through hole 124k ′.

In addition, the coupling magnet 1243 may be disposed in the magnet receiving portion 1241k' of the base BS. In an embodiment, the length of the coupling magnet 1243 in the third direction may be greater than the length in the third direction of the base BS. With this configuration, the separation distance between the coupling magnet 1243 and each yoke of the above-described yoke portion is reduced, so that the coupling force between the mover, the housing, and the rotating plate is improved, so that the reliability of the actuator can be improved.

However, the coupling magnet 1243 has a length DR1 in the first direction (X-axis direction) in the first direction (X-axis direction) between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b. It may be less than or equal to the separation distance DR2. In addition, the coupling magnet 1243 may have a length in the second direction (Y-axis direction) less than or equal to a separation distance in the second direction (Y-axis direction) between the 2-1 protrusion and the 2-2 protrusion. For example, the magnet accommodating portion 1241k' may be positioned to circumscribe each protrusion. With this configuration, it is possible to reduce the influence applied to the axis tilt based on the protrusion by the coupling force (eg, magnetic force) generated by the magnet in the base BS.

In addition, in the same embodiment as described above, the coupling magnet 1243 may be symmetrically disposed by each of the first vertical line K1 and the second vertical line K2. In other words, the coupling magnet 1243 may have the same separation distance from the first surface 1241a and the separation distance from the second surface 1241b in the base BS. In addition, the coupling magnet 1243 may have the same separation distance from the third surface 1241c and the fourth surface 1241d in the base BS. With this configuration, the weight is not concentrated in one side or in one direction by the coupling magnet 1243, so that the base BS can receive a uniform resistance force when the first and second axes are tilted. Accordingly, the actuator according to the embodiment may provide more precise axis tilt control.

13C, the coupling magnet 1243 may be positioned on the first surface 1241a of the base BS. To this end, a magnet groove 1241K' may be provided on the first surface 1241a of the base BS. Accordingly, the coupling magnet 1243 can be seated in the magnet groove 124k.

Accordingly, the coupling magnet 1243 has a length DR1 in the first direction in the first direction (X-axis direction) between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b. However, as described above, since the coupling magnet 1243 is positioned on the first surface 1241a and adjacent to the first yoke, the coupling force can be compensated.

In addition, the coupling magnet 1243 may have a length in the second direction (Y-axis direction) greater than or equal to a distance in the second direction between the 2-1 protrusion and the 2-2 protrusion. With this configuration, it is possible to improve the bonding force with the yoke. However, it is not limited to this configuration.

In addition, by having various sizes of the second protrusion PR2, it is possible to easily tilt or tilt in the first direction (X-axis direction).

Referring to FIG. 13D, the rotation plate 1241 according to the embodiment may be applied in the same manner except for the length in the second direction (Y-axis direction) of the coupling magnet 1243. As described above, the magnet receiving portion 1241k may be positioned adjacent to the second surface 1241b of the base BS. Accordingly, the second surface 1241b may be partially opened to be exposed.

In addition, the coupling magnet 1243 may be seated in the magnet receiving portion 1241k. That is, the coupling magnet 1243 may also be seated adjacent to the second surface 1241b in the base BS.

In addition, the coupling magnet 1243 may be disposed symmetrically with respect to the above-described first vertical line K1. Accordingly, the coupling magnet 1243 may have different separation distances from the first surface 1241a and the separation distance from the second surface 1241b in the base BS. In addition, the coupling magnet 1243 may have the same separation distance from the third surface 1241c and the fourth surface 1241d in the base BS. With this configuration, the actuator according to the embodiment can provide more precise axial tilt control.

In addition, the length DR1 in the first direction (X-axis direction) of the coupling magnet 1243 in the rotation plate 1241 is a first direction between the 1-1 protrusion PR1a and the 1-2 protrusion PR1b ( It may be greater than or less than the separation distance (DR2) in the X-axis direction).

However, the length in the second direction (Y-axis direction) of the coupling magnet 1243 from the rotating plate 1241 is the second direction (Y-axis) between the 2-1 protrusion PR2a and the 2-2 protrusion PR2b. Direction) may be smaller than the separation distance.

14A is an exploded view of a housing and a mover according to another embodiment, FIG. 14B is a top view of a housing and a mover according to another embodiment, FIG. 14C is a perspective view of a housing according to another embodiment, and FIG. 14D is another embodiment It is a perspective view of the prism holder according to.

14A to 14D, as described above, the housing 1220 includes a first housing side 1221, a second housing side 1222, a third housing side 1223, and a fourth housing side 1224. Can include.

The first housing side 1221 and the second housing side 1222 may be disposed to face each other. Also, the third housing side 1223 and the fourth housing side 1224 may be disposed between the first housing side 1221 and the second housing side 1222.

The third housing side 1223 may contact the first housing side 1221, the second housing side 1222, and the fourth housing side 1224. In addition, the third housing side portion 1223 may be a bottom surface of the housing 1220.

In addition, the first housing side portion 1221 may include a first housing hole 1221a. A first coil 1252a, which will be described later, may be positioned in the first housing hole 1221a.

In addition, the second housing side portion 1222 may include a second housing hole 1222a. In addition, a second coil 1252b, which will be described later, may be positioned in the second housing hole 1222a.

The first coil 1252a and the second coil 1252b may be coupled to the substrate portion 1254. In an embodiment, the first coil 1252a and the second coil 1252b are electrically connected to the substrate portion 1254 to allow current to flow. This current is a component of the electromagnetic force that the second camera actuator can tilt with respect to the X axis.

In addition, the third housing side portion 1223 may include a third housing hole 1223a. A third coil 1252c, which will be described later, may be positioned in the third housing hole 1223a. The third coil 1252c may be coupled to the substrate portion 1254. In addition, the third coil 1252c is electrically connected to the substrate portion 1254 to allow current to flow. This current is a component of the electromagnetic force that the second camera actuator can tilt with respect to the Y axis.

The fourth housing side portion 1224 may include a first housing groove 1224a. A first yoke 1242a, which will be described later, may be disposed in a region facing the first housing groove 1224a. Accordingly, the housing 1220 may be coupled to the rotating plate 1241 by magnetic force or the like.

In addition, the housing 1220 may include a receiving portion 1225 formed by the first to fourth housing side portions 1221 to 1224. A mover 1230 may be positioned in the receiving part 1225.

The mover 1230 includes a prism holder 1231 and a prism 1232 mounted on the prism holder 1231.

The prism holder 1231 may be mounted on the receiving portion 1225 of the housing 1220. The prism holder 1231 includes a first prism outer surface to a fourth prism corresponding to the first housing side 1221, the second housing side 1222, the third housing side 1223, and the fourth housing side 1224, respectively. It may include an outer surface. A detailed description of this will be described later.

The prism 1232 may be mounted on the prism holder 1231. To this end, the prism holder 1231 may have a seating surface, and the seating surface may be formed by a receiving groove. The prism 1232 may include a reflector disposed therein. However, it is not limited thereto. In addition, the prism 1232 may reflect light reflected from the outside (eg, an object) into the camera module. In other words, the prism 1232 may change the path of the reflected light to improve spatial limitations of the first camera actuator and the second camera actuator. Accordingly, the camera module can provide a high range of magnification by expanding the optical path while minimizing the thickness.

Specifically, in the housing 1220 according to another embodiment, the first housing side portion 1221 may include a first housing recess 1221h disposed on an inner surface. The first housing recess 1221h may be positioned between the first housing hole 1221a and the fourth housing side 1224 in a third direction. In other words, the first housing recess 1221h may be positioned adjacent to a rotation plate positioned between the housing 1220 and the mover 1230. In addition, the first housing recess 1221h may be positioned on the inner side of the first housing side portion 1221. Accordingly, the first housing protrusion 1221P1 can be easily formed on the inner surface of the first housing side portion 1221.

In addition, the second housing side portion 1222 may include a second housing protrusion 1222h disposed on an inner surface. Like the first housing recess 1221h, the second housing recess 1222h may be positioned between the first housing hole 1221a and the fourth housing side 1224 in a third direction. That is, the second housing recess 1222h may be positioned adjacent to the rotating plate.

In addition, the second housing recess 1222h may be symmetrically disposed with respect to the first housing recess 1221h and the mover or the third direction. Thus, it is possible to remove oscillation generated by OIS performance between the housing 1220 and the mover 1230.

In addition, the first housing recess 1221h may include a first bottom surface 1221hL and a first jaw 1221hP. The maximum height in the first direction between the first bottom surface 1221h1 and the third housing side portion 1223 that is the bottom surface may be smaller than the maximum height in the first direction between the first jaw 1221hP and the third housing side portion 1223. That is, the top surface of the first jaw 1221hP may be located above the first bottom surface 1221hL. Accordingly, even if the coupling member DP is applied to the first housing recess 1221h, the coupling member DP is the first housing side portion 1221 and the first prism outer surface 1231S1 by the first jaw 1221hP. It may not flow through.

Similarly, the second housing recess 1222h may include a second bottom surface 1222hL and a second jaw 1222hP. The maximum height in the first direction between the second bottom surface 1222h1 and the third housing side portion 1223 that is the bottom surface may be smaller than the maximum height in the first direction between the second jaw 1222hP and the third housing side portion 1223. That is, the upper surface of the second jaw 1222hP may be located above the second bottom surface 1222hL. Accordingly, even if the coupling member DP is applied to the second housing recess 1222h, the coupling member DP is formed with the second housing side 1222 and the second prism outer surface 1231S2 by the second jaw 1222hP. It may not flow through.

Corresponding to the above-described first housing recess 1221h and second housing recess 1222h, the housing holder 1231 of the mover 1230 is the first housing side portion 1221 from the first prism outer surface 1231S1. A first prism protrusion 1231P1 protruding toward and a second prism protrusion 1231P2 protruding from the second prism outer surface 1231S2 toward the second housing side 1222.

The first prism protrusion 1231P1 and the second prism protrusion 1231P2 may be seated in the first housing recess 1221h and the second housing recess 1222h, respectively. In addition, the coupling member DP may couple the first prism protrusion 1231P1 and the first housing recess 1221h. In addition, the coupling member DP may couple the second prism protrusion 1231P2 and the second housing recess 1222h. With this configuration, even when the first and second axis tilts by the driving unit are performed as described above, oscillation occurring between the mover 1230 and the housing 1220 can be blocked. Accordingly, in the actuator according to the embodiment, noise may be reduced and reliability of the device may be improved.

In addition, the coupling member DP may be made of various materials such as epoxy. For example, the coupling member (example) may be made of a heat-curable or UV-curable material. However, it is not limited thereto.

15A is an exploded view of a housing and a mover according to a modified example, FIG. 15B is a top view of a housing and a mover according to a modified example, FIG. 15C is a perspective view of a housing according to a modified example, and FIG. 15D is a prism holder according to the modified example Is a perspective view of.

First, the description of the housing and the mover may be equally applied in the present embodiment except for the description of the housing and the mover additionally hereinafter.

15A to 15D, in the housing 1220 according to the modified example, the first housing side portion 1221 may include a first housing protrusion 1221P1 protruding from the inner side toward the mover 1230. The first housing protrusion 1221P1 may be positioned between the first housing hole 1221a and the fourth housing side 1224 in a third direction. That is, the first housing protrusion 1221P1 may be positioned adjacent to a rotation plate positioned between the housing 1220 and the mover 1230.

In addition, the first housing protrusion 1221P1 may be positioned above the inner side surface of the first housing side portion 1221. Accordingly, the first housing recess 1221h can be easily formed on the inner side of the first housing side portion 1221. That is, it is possible to provide cost reduction according to the manufacturing process.

In addition, the second housing side portion 1222 may include a second housing protrusion 1222P2 disposed on an inner surface. Like the first housing protrusion 1221P1, the second housing protrusion 1222P2 may be positioned between the first housing hole 1221a and the fourth housing side 1224 in a third direction. That is, the second housing protrusion 1222P2 may be positioned adjacent to the rotation plate.

In addition, the second housing protrusion 1222P2 may be disposed symmetrically with respect to the first housing protrusion 1222p1 and the mover or the third direction. Thus, it is possible to remove oscillation generated by OIS performance between the housing 1220 and the mover 1230.

In addition, in the prism holder 1231, the first prism recess 1231h1 and the second prism recess 1231h2 may be positioned on the first prism outer surface 1231S1 and the second prism outer surface 1231S2, respectively. In addition, the first housing protrusion 1221P1 and the second housing protrusion 1222P2 may be seated in the first prism recess 1231h1 and the second prism recess 1231h2, respectively.

In addition, the coupling member DP may be applied to the first prism recess 1231h1 and the second prism recess 1231h2. Accordingly, the coupling member DP may couple the first prism recess 1231h1 and the first housing protrusion 1221P1. In addition, the coupling member DP may couple the second prism recess 1231h2 and the second housing protrusion 1222P2. With this configuration, even when the first and second axis tilts by the driving unit are performed as described above, oscillation occurring between the mover 1230 and the housing 1220 can be blocked. Accordingly, in the actuator according to the embodiment, noise may be reduced and reliability of the device may be improved.

In addition, the first prism recess 1231h1 and the second prism recess 1231h2 may include first and second prism bottom surfaces 1231hL and first and second prism jaws 1231hP, respectively. Hereinafter, a description will be made based on that the first prism recess 1231h1 includes the first prism bottom surface 1231hL and the first prism jaw 1231hP. The maximum height in the first direction between the first prism bottom surface 1231hL and the third housing side portion 1223 as the bottom surface may be smaller than the maximum height in the first direction between the first prism jaw 1231hP and the third housing side portion 1223 . That is, the upper surface of the first prism jaw 1231hP may be located above the first bottom surface 1221hL. Accordingly, even if the coupling member DP is applied to the first prism recess 1231h1, the coupling member DP is formed with the first housing side 1221 and the first prism outer surface 1231S1 by the first prism jaw 1231hP. ) May not flow through.

Corresponding to the above-described first prism recess 1231h1 and second prism recess 1231h2, the housing 1220 includes a first protruding from the first housing side 1221 toward the first prism outer surface 1231S1. A housing protrusion 1231P1 and a second housing protrusion 1231P2 protruding from the second housing side 1222 toward the second prism outer surface 1231S2 may be included. In addition, the above-described housing protrusion and recess may correspond to a shape as well as a position.

In addition, the coupling member DP may be made of various materials such as epoxy. For example, the coupling member (example) may be made of a heat-curable or UV-curable material. However, it is not limited thereto.

16A is an exploded view of a housing and a mover according to another embodiment, FIG. 16B is a top view of a housing and a mover according to another embodiment, and FIG. 16C is a perspective view of a housing according to another embodiment, and FIG. 16D is A perspective view of a prism holder according to another embodiment.

First, the description of the housing and the mover may be equally applied in the present embodiment except for the description of the housing and the mover additionally hereinafter.

16A to 16D, in a housing according to another embodiment, a first housing side 1221 includes a first housing recess 1221h', and a second housing side 1222 is a second housing recess. It may include a recess 1222h'.

In addition, the first housing recess 1221h' may include a first protrusion 1221p' protruding in the third direction. In addition, the second housing recess 1222h ′ may include a second protrusion 1222p ′ protruding in the third direction. The first protrusion 1221p' and the second protrusion 1222p' may be plural, and the maximum length in the third direction is the third of the first housing recess 1221h' or the second housing recess 1222h'. May be less than the maximum length in the direction. Accordingly, the rotation angle of the vertical tilt (ie, the first axis tilt) may not be reduced.

In addition, the first prism outer surface 1231S1 of the prism holder 1231 may include a first prism recess 1231ha'. In addition, the second prism outer surface 1231S2 may include a second prism recess 1231hb'.

The first prism recess 1231ha' may include a third protrusion 1231hP1 protruding in a third direction. In addition, the second prism recess 1231hb ′ may include a fourth protrusion 1231hP2 protruding in the third direction.

In addition, the buffer member DSP includes a first housing recess 1221h', a second housing recess 1222h', a first prism recess 1231ha', a second prism recess 1231hb', and a third It may be at least partially overlapped in the direction.

Specifically, the buffer member DSP is seated in the first buffer area DSPa and the first and second prism recesses 1231ha' and 1231hb' that are seated in the first and second housing recesses 1221h' and 1222h'. A second buffer area DSPb may be included.

The first buffer area DSPa may include a first coupling hole DSPh1. There may be a plurality of first coupling holes DSPh1. In addition, the first and second protrusions 1221p' and 1222p' may pass through the first coupling hole DSPh1.

In addition, the second buffer area DSPb may include a second coupling hole DSPh2, and there may be a plurality of second coupling holes DSPh2. In addition, the third and fourth protrusions 1231hP1 and 1231hP2 may pass through the second coupling hole DSPh2.

In addition, the coupling member DP may be applied between the first coupling hole DSPh1 and the first and second protrusions 1221p' and 1222p'. In addition, the coupling member DP may be applied between the second coupling hole DSPh2 and the third and fourth protrusions 1231hP1 and 1231hP2. With this configuration, the mover 1230 and the housing 1220 may be connected by a buffer member DSP. In addition, the shock absorbing member DSP is a spring and may reduce oscillation generated in the mover 1230 according to the first and second axis tilts. Accordingly, the reliability of the actuator according to the embodiment may be improved and noise generation due to oscillation may be suppressed.

FIG. 17 is a perspective view of an actuator for AF or Zoom according to another embodiment of the present invention, FIG. 18 is a perspective view with some configurations omitted from the actuator according to the embodiment shown in FIG. 17, and FIG. 19 is shown in FIG. In the actuator according to the embodiment, some configurations are omitted, an exploded perspective view, FIG. 20A is a perspective view of a first lens assembly in the actuator according to the embodiment shown in FIG. 19, and FIG. 20B is a first lens assembly shown in FIG. 20A. It is a perspective view with some components removed.

FIG. 17 is a perspective view of an actuator for AF or Zoom according to another embodiment of the present invention, and FIG. 18 is a perspective view with some configurations omitted from the actuator according to the embodiment shown in FIG. 17, and FIG. 19 is shown in FIG. It is an exploded perspective view in which some components are omitted in the actuator according to the embodiment.

Referring to FIG. 17, an actuator 2100 according to an embodiment includes a housing 2020, a circuit board 2040 disposed outside the housing 2020, a driving unit 2142, and a third lens assembly 2130. can do.

18 is a perspective view in which the housing 2020 and the circuit board 2040 are omitted from FIG. 17, and referring to FIG. 18, the actuator 2100 according to the embodiment includes a first guide part 2210 and a second guide part. 2220, a first lens assembly 2110, a second lens assembly 2120, a driving unit 2141, and a driving unit 2142 may be included.

The driving unit 2141 and the driving unit 2142 may include a coil or a magnet.

For example, when the driving unit 2141 and the driving unit 2142 include a coil, the driving unit 2141 may include a first coil unit 2141b and a first yoke 2141a, and the driving unit 2142 is A second coil unit 2142b and a second yoke 2142a may be included.

Alternatively, on the contrary, the driving unit 2141 and the driving unit 2142 may include a magnet.

Referring to FIG. 19, the actuator 2100 according to the embodiment includes a housing 2020, a first guide part 2210, a second guide part 2220, a first lens assembly 2110, and a second lens assembly 2120. ), a third lens assembly 2130 may be included.

For example, the actuator 2100 according to the embodiment includes a housing 2020, a first guide part 2210 disposed on one side of the housing 2020, and a second guide part disposed on the other side of the housing 2020. 2220, a first lens assembly 2110 corresponding to the first guide part 2210, a second lens assembly 2120 corresponding to the second guide part 2220, and a first guide part 2210 And a first ball 2117 (see FIG. 20A) disposed between the first lens assembly 2110 and a second ball (not shown) disposed between the second guide part 2220 and the second lens assembly 2120 It may include.

In addition, the embodiment may include a third lens assembly 2130 disposed in front of the first lens assembly 2110 in the optical axis direction.

Referring to FIGS. 18 and 19, in an exemplary embodiment, a first guide part 2210 disposed adjacent to a first sidewall of the housing 2020 and a second guide disposed adjacent to a second sidewall of the housing 2020 It may include a part 2220.

The first guide part 2210 may be disposed between the first lens assembly 2110 and the first sidewall of the housing 2020.

The second guide part 2220 may be disposed between the second lens assembly 2120 and the second sidewall of the housing 2020. The first sidewall and the second sidewall of the housing 2020 may be disposed to face each other.

According to an embodiment, as the lens assembly is driven in a state in which the precisely numerically controlled first guide part 2210 and the second guide part 2220 are coupled in the housing 2020, friction torque is reduced to reduce frictional resistance. As a result, there are technical effects such as improvement in driving power, reduction in power consumption, and improvement in control characteristics during zooming.

Accordingly, according to the embodiment, while minimizing the friction torque during zooming, decent or tilt of the lens, and the phenomenon that the central axis of the lens group and the image sensor are not aligned are prevented. However, there are complex technical effects that can significantly improve the resolution.

In particular, according to the present embodiment, the injection direction is obtained by separately adopting the first guide part 2210 and the second guide part 2220 that are formed and assembled separately from the housing 2020 without disposing a guide rail on the housing itself. There is a special technical effect that can prevent the occurrence of gradients according to.

In the embodiment, the first guide part 2210 and the second guide part 2220 may have a shorter injection length than the housing 2020, and in this case, the first guide part 2210 and the second guide When the rail is disposed on the part 2220, it is possible to minimize the occurrence of a gradient during injection, and there is a technical effect that a straight line of the rail is unlikely to be twisted.

More specifically, FIG. 20A is a perspective view of the first lens assembly 2110 in the actuator according to the embodiment shown in FIG. 19, and FIG. 20B is a partial component removed from the first lens assembly 2110 shown in FIG. 20A. It is a perspective view.

Referring to FIG. 19 for a moment, the embodiment includes a first lens assembly 2110 moving along the first guide part 2210 and a second lens assembly 2120 moving along the second guide part 2220. can do.

Referring back to FIG. 20A, the first lens assembly 2110 may include a first lens barrel 2112a in which the first lens 2113 is disposed and a first driving unit housing 2112b in which the driving unit 2116 is disposed. have. The first lens barrel 2112a and the first driving unit housing 2112b may be a first housing, and the first housing may have a barrel or barrel shape. The driving unit 2116 may be a driving magnet, but is not limited thereto, and a coil may be disposed in some cases.

In addition, the second lens assembly 2120 may include a second lens barrel (not shown) in which a second lens (not shown) is disposed and a second driver housing (not shown) in which a drive unit (not shown) is disposed. The second lens barrel (not shown) and the second driving unit housing (not shown) may be a second housing, and the second housing may have a barrel or barrel shape. The driving unit may be a driving magnet, but is not limited thereto, and a coil may be disposed in some cases.

The driving unit 2116 may correspond to the two first rails 2212.

Embodiments can be driven using single or multiple balls. For example, in the embodiment, between the first ball 2117 and the second guide part 2220 and the second lens assembly 2120 disposed between the first guide part 2210 and the first lens assembly 2110 It may include a second ball (not shown) to be disposed.

For example, in the embodiment, the first ball 2117 is disposed on the lower side of the single or plurality of first-first balls 2117a and the first driving unit housing 2112b disposed on the upper side of the first driving unit housing 2112b. It may include a single or a plurality of 1-2 balls (2117b).

In the embodiment, the 1-1 ball 2117a of the first balls 2117 moves along the 1-1 rail 2212a, which is one of the first rails 2212, and the first ball 2117 of the first balls 2117 The -2 ball 2117b may move along the 1-2th rail 2212b that is the other one of the first rails 2212.

According to the embodiment, the first guide unit includes the 1-1 rail and the 1-2 rail, so that the 1-1 rail and the 1-2 rail guide the first lens assembly 2110, thereby providing a first lens assembly. When the 2110 moves, there is a technical effect of improving the accuracy of aligning the second lens assembly 2110 with the optical axis.

Referring to FIG. 20B, in an embodiment, the first lens assembly 2110 may include a first assembly groove 2112b1 in which the first ball 2117 is disposed. The second lens assembly 2120 may include a second assembly groove (not shown) in which the second ball is disposed.

There may be a plurality of first assembly grooves 2112b1 of the first lens assembly 2110. In this case, a distance between the two first assembly grooves 2112b1 among the plurality of first assembly grooves 2112b1 based on the optical axis direction may be longer than the thickness of the first lens barrel 2112a.

In an embodiment, the first assembly groove 2112b1 of the first lens assembly 2110 may have a V shape. In addition, the second assembly groove (not shown) of the second lens assembly 2120 may have a V shape. In addition to the V shape, the first assembly groove 2112b1 of the first lens assembly 2110 may have a U shape or a shape that contacts the first ball 2117 at two or three points. The second assembly groove (not shown) of the second lens assembly 2120 may have a U shape other than a V shape, or a shape that contacts the second ball at two or three points.

19 and 20A, in the embodiment, the first guide part 2210, the first ball 2117, and the first assembly groove 2112b1 are arranged on an imaginary straight line from the first sidewall toward the second sidewall. Can be. The first guide part 2210, the first ball 2117, and the first assembly groove 2112b1 may be disposed between the first sidewall and the second sidewall.

Next, FIG. 21 is a perspective view of a third lens assembly 2130 in the actuator according to the embodiment shown in FIG. 19.

Referring to FIG. 21, in an embodiment, the third lens assembly 2130 may include a third housing 2021, a third barrel, and a third lens 2133.

In the embodiment, the third lens assembly 2130 is provided with a barrel recess 2021r at the top of the third barrel, so that the thickness of the third barrel of the third lens assembly 2130 can be uniformly adjusted, and the amount of the injection product can be adjusted. There is a complex technical effect that can increase the accuracy of numerical management by reducing it.

In addition, according to the embodiment, the third lens assembly 2130 may include a housing rib 2021a and a housing recess 2021b in the third housing 2021.

In the embodiment, the third lens assembly 2130 is provided with a housing recess 2021b in the third housing 2021, thereby reducing the amount of the injection material to increase the accuracy of numerical management, and at the same time, the housing rib ( 2021a) has a complex technical effect that can secure strength.

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

As shown in FIG. 22, the mobile terminal 1500 according to the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided on the rear side.

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

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

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

For example, the camera module 1000 may include a first camera module 1000 and a second camera module 1000, and OIS may be implemented with an AF or zoom function by the first camera module 1000A. I can.

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

The autofocusing device 1510 may include one of a package of a surface light emitting laser device as a light emitting unit.

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

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

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

For example, FIG. 23 is an exterior view of a vehicle including a vehicle driving assistance apparatus to which the camera module 1000 according to the embodiment is applied.

Referring to FIG. 23, the vehicle 700 of the embodiment may include wheels 13FL and 13FR that rotate by a power source, and a predetermined sensor. The sensor may be the camera sensor 2000, but is not limited thereto.

The camera 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle 700 of the embodiment may acquire image information through a camera sensor 2000 that photographs a front image or a surrounding image, and uses the image information to determine a lane identification situation and generates a virtual lane when the vehicle is unidentified. can do.

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

For example, when an object such as a lane, an adjacent vehicle, a driving obstacle, and an indirect road marking is photographed in the image captured by the camera sensor 2000, the processor detects such an object. Thus, it can be included in the image information. In this case, the processor may further supplement the image information by obtaining distance information from the object detected through the camera sensor 2000.

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

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

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

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

Although the embodiments have been described above, these are only examples and do not limit the present invention, and those of ordinary skill in the field to which the present invention belongs are not exemplified above without departing from the essential characteristics of the present embodiment. It will be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiment can be modified and implemented. And differences related to these modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (20)

housing;
A mover disposed in the housing;
A rotating plate disposed between the housing and the mover; And
Includes; a driving unit disposed in the housing and driving the mover,
The rotating plate includes a base, a first protrusion protruding from a first surface of the base, a second protrusion protruding from a second surface of the base, and a coupling magnet disposed on the base,
A camera actuator comprising a yoke disposed on at least one of the housing and the mover.
The method of claim 1,
The base includes a hole or groove,
The coupling magnet is a camera actuator disposed in the hole or the groove
The method of claim 1,
The coupling magnet is a camera actuator built into the base.
The method of claim 1,
The coupling magnet is a camera actuator that is exposed to either the first surface or the second surface.
The method of claim 1,
The center of the rotating plate is a camera actuator adjacent to the optical axis of the camera actuator.
The method of claim 1,
The mover is a camera actuator that is tilted toward a first axis based on the first protruding part and tilted toward a second axis based on the second protruding part.
The method of claim 6,
The first protrusion portion 1-1 protrusions spaced apart from each other in the first axial direction; And a 1-2 protrusion.
The method of claim 7,
The 1-1 protrusion and the 1-2 protrusion are arranged to overlap in the first axis direction.
The method of claim 7,
The first protrusion is a camera actuator positioned on an imaginary line bisecting the first surface in the second axis direction.
The method of claim 6,
The second protrusions 2-1 protrusions spaced apart from each other in the second axial direction; And a 2-2 protrusion.
The method of claim 10,
The 2-1 protrusion and the 2-2 protrusion are arranged to overlap in the second axis direction.
The method of claim 10,
The second protrusion is a camera actuator positioned on an imaginary line bisecting the second surface in the first axis direction.
The method of claim 6,
The driving unit includes a driving magnet and a driving coil,
The driving magnet includes a first magnet, a second magnet, and a third magnet,
The driving coil includes a first coil, a second coil, and a third coil,
The first magnet and the second magnet are symmetrically disposed about the first axis on the mover,
The first coil and the second coil are symmetrically disposed about the first axis between the housing and the mover,
The third magnet is disposed on the bottom surface of the mover,
The third coil is a camera actuator disposed on a bottom surface of the housing.
The method of claim 1,
The mover, a prism; And a prism holder on which the prism is seated,
The prism holder includes a seating groove in which the rotating plate is seated,
The seating groove may include a first area in which the yoke is seated; A second region in which the first protrusion is seated and is in contact with the first protrusion; And a third area surrounding the first area and the second area.
The method of claim 14,
The height of the third area is smaller than the height of the second area and the height of the second area.
housing;
A mover disposed in the housing;
A rotating plate disposed between the housing and the mover; And
Includes; a driving unit disposed in the housing and driving the mover,
The rotating plate includes a base, a first protrusion protruding from a first surface of the base, a second protrusion protruding from a second surface of the base, and a yoke disposed on the base,
A camera actuator comprising a coupling magnet disposed on at least one of the housing and the mover.
housing;
A mover disposed in the housing;
A rotating plate disposed between the housing and the mover; And
Includes; a driving unit disposed in the housing and driving the mover,
The mover rotates in at least one of a first axis and a second axis by the rotation plate,
The rotating plate is a camera actuator including a first magnetic body in close contact with the housing and the mover.
The method of claim 17,
The camera actuator further comprises a second magnetic body disposed on the housing and the mover and corresponding to the first magnetic body.
The method of claim 18,
The first magnetic body is a magnet and the second magnetic body is a yoke.
The method of claim 18,
The first magnetic body and the second magnetic body are magnets, and the camera actuators are arranged so that different polarities correspond to each other.

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