KR20220036018A - Camera actuator and camera module comprising the same - Google Patents

Abstract

Embodiments of the present invention include a housing; A mover including a holder disposed in the housing and an optical member disposed on the holder; and a driving unit disposed within the housing and moving the mover, wherein the holder is located between the outer surface of the first holder and the outer surface of the second holder facing each other, and the outer surface of the first holder and the outer surface of the second holder. Cavity placed in; and a stopper in contact with an outer surface of the first holder and an outer surface of the second holder, wherein the stopper includes an upper stopper disposed on the bottom of the cavity. and a lower stopper disposed below the bottom of the cavity, wherein the upper stopper and the lower stopper are located at ends of the first holder outer surface and the second holder outer surface in the optical axis direction.

Description

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

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

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

On the other hand, the image sensor's resolution increases with higher pixels and the size of the pixel becomes smaller. As the pixel gets smaller, the amount of light received during the same period of time decreases. Therefore, the higher the resolution of the camera, the more likely it is that the image will be shaken due to camera shake caused by slower shutter speeds in a dark environment. A representative example of image stabilization (IS) technology is optical image stabilization (OIS), a technology that corrects movement by changing the path of light.

According to general OIS technology, camera movement is detected through a gyrosensor, etc., and the lens can be tilted or moved based on the detected movement, or the camera module including the lens and image sensor can be tilted or moved. . When a lens or a camera module including a lens and an image sensor is tilted or moved for OIS, additional space for tilting or movement needs to be secured around the lens or camera module.

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

However, depending on the needs of ultra-slim and ultra-small camera modules, there are significant space constraints for placing actuators for OIS, and there is not enough space for the lens or the camera module itself, including the lens and image sensor, to tilt or move for OIS. This may be difficult to guarantee. In addition, it is desirable for a higher-pixel camera to have a larger lens size to increase the amount of light received, but there may be a limit to increasing the size of the lens due to the space occupied by the actuator for OIS.

Additionally, when a zooming function, an AF function, and an OIS function are all included in a camera module, there is a problem that the magnet for OIS and the magnet for AF or zoom are placed close to each other, causing magnetic field interference.

The technical problem that the present invention aims to solve 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 including a holder disposed in the housing and an optical member disposed on the holder; and a driving unit disposed within the housing and moving the mover, wherein the holder is located between the outer surface of the first holder and the outer surface of the second holder facing each other, and the outer surface of the first holder and the outer surface of the second holder. Cavity placed in; and a stopper in contact with an outer surface of the first holder and an outer surface of the second holder, wherein the stopper includes an upper stopper disposed on the bottom of the cavity. and a lower stopper disposed below the bottom of the cavity, wherein the upper stopper and the lower stopper are located at ends of the outer surface of the first holder and the outer surface of the second holder in the optical axis direction.

The holder may include a first area and a second area that are bisected in the optical axis direction and arranged sequentially.

The upper stopper and the lower stopper may be located in the second area.

The upper stopper and the lower stopper may be spaced apart in a first direction.

The optical member may have an area overlapping with the first area in the second direction smaller than an area overlapping with the second area in the second direction, and the second direction may be perpendicular to the first direction and the optical axis direction. there is.

The area of the upper stopper may be larger than the area of the lower stopper.

The upper stopper may overlap the optical member in a second direction.

The outer surface of the first holder and the outer surface of the second holder may include an upper region and a lower region bisected in the first direction.

The upper stopper may be placed in the upper area, and the lower stopper may be placed in the lower area.

The holder is disposed on a third holder outer surface disposed below the first holder outer surface and the second holder outer surface, and on the third holder outer surface between the first holder outer surface and the second holder outer surface. and an outer surface of the fourth holder, and the lower stopper may be disposed closer to the outer surface of the third holder than the upper stopper.

The upper stopper and the lower stopper may be made of an elastic material.

The cross-sectional area of the cavity may increase in the direction of the optical axis.

The maximum cross-sectional area of the cavity in the first area may be smaller than the maximum cross-sectional area of the cavity in the second area.

The upper stopper and the lower stopper may extend inward.

It further includes a tilting guide portion disposed between the housing and the mover, wherein the driving portion includes a driving magnet and a driving coil, and 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 on the mover about the first axis, and the first coil and the third coil are arranged symmetrically about the first axis on the mover. 2 coils are disposed symmetrically about the first axis between the housing and the mover, the third magnet is disposed on the bottom of the mover, and the third coil may be disposed on the bottom of the housing. .

According to an embodiment of the present invention, a camera actuator applicable to ultra-slim, ultra-small and high-resolution cameras can be provided. In particular, actuators for OIS can be placed efficiently without increasing the overall size of the camera module.

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 Precise OIS function can be realized as it does not cause magnetic field interference with the zooming actuator.

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

1 is a perspective view of a camera module according to an embodiment,
Figure 2 is an exploded perspective view of a camera module according to an embodiment,
Figure 3 is a cross-sectional view taken along line AA' in Figure 1;
Figure 4 is a perspective view of a first camera actuator according to an embodiment;
5 is an exploded perspective view of a first camera actuator according to an embodiment;
6 is a perspective view of the first housing in the first camera actuator according to the embodiment;
Figure 7 is a perspective view of an optical member of a first camera actuator according to an embodiment;
Figure 8 is a perspective view of a holder according to an embodiment;
9 and 10 are side views of a holder according to an embodiment;
Figure 11 is another side view of the holder according to the embodiment;
12 is a top view of a holder according to an embodiment;
13 is a bottom view of a holder according to an embodiment;
Figure 14 is a perspective view of the tilting guide portion of the first camera actuator according to the embodiment;
Figure 15 is a perspective view in a different direction from Figure 14,
Figure 16 is a cross-sectional view viewed at FF' in Figure 14.
17 is a perspective view of a first camera actuator according to an embodiment;
Figure 18 is a cross-sectional view taken along line BB' in Figure 17;
Figure 19 is a cross-sectional view taken along line CC' in Figure 17;
Figure 20 is a diagram showing a first driving unit of a first camera actuator according to an embodiment;
Figure 21 is a perspective view of a first camera actuator according to an embodiment;
Figure 22 is a cross-sectional view taken along line DD' in Figure 21;
Figure 23 is an example of movement of the first camera actuator shown in Figure 22;
Figure 24 is a perspective view of a first camera actuator according to an embodiment;
Figure 25 is a cross-sectional view taken along EE' in Figure 24,
Figure 26 is an example of movement of the first camera actuator shown in Figure 25;
Figure 27 is a perspective view of a second camera actuator according to an embodiment;
Figure 28 is an exploded perspective view of a second camera actuator according to an embodiment;
Figure 29 is a cross-sectional view viewed along GG' in Figure 27,
Figure 30 is a cross-sectional view viewed from HH' in Figure 27,
Figure 31 is a perspective view of a mobile terminal to which a camera module is applied according to an embodiment;
Figure 32 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

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

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

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

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

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

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

Figure 1 is a perspective view of a camera module according to an embodiment, Figure 2 is an exploded perspective view of a camera module according to an embodiment, and Figure 3 is a cross-sectional view cut along AA' in Figure 1.

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

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

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

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

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

The first camera actuator 1100 can change the path of light. In an embodiment, the first camera actuator 1100 may vertically change the optical path through an internal optical member (eg, mirror). With this configuration, even if the thickness of the mobile terminal is reduced, a lens configuration larger than the thickness of the mobile terminal can be placed in the mobile terminal through a change in the optical path to perform magnification, auto focusing (AF), and OIS functions.

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

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

The circuit board 1300 may be placed behind the second camera actuator 1200. The circuit board 1300 may be electrically connected to the second camera actuator 1200 and the first camera actuator 1100. Additionally, there may be a plurality of circuit boards 1300.

This circuit board 1300 is connected to the second housing of the second camera actuator 1200, and an image sensor may be provided. Furthermore, a base portion including a filter may be seated on the circuit board 1300. This will be explained later.

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

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

Additionally, the second camera module may be placed in a predetermined housing (not shown) and may include an actuator (not shown) capable of driving the lens unit. The actuator may be a voice coil motor, micro actuator, silicon actuator, etc., and may be applied in various ways such as electrostatic method, thermal method, bimorph method, and electrostatic force method, but is not limited thereto. Additionally, in this specification, the camera actuator may be referred to as an actuator, etc. Additionally, a camera module consisting of a plurality of camera modules can be mounted in various electronic devices such as mobile terminals.

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

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

In this specification, bottom refers to one side in the first direction. And the first direction is the X-axis direction in the drawing and can be used interchangeably with the second axis direction. The second direction is the Y-axis direction in the drawing and can be used interchangeably with the first axis direction. The second direction is perpendicular to the first direction. Additionally, the third direction is the Z-axis direction in the drawing, and may be used interchangeably with the third axis direction. 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 directions perpendicular to the optical axis and can be tilted by the second camera actuator. You can. A detailed explanation of this will be provided later.

In addition, in the description of the second camera actuator 1200 below, the optical axis direction corresponds to the optical path and is the third direction (Z-axis direction), and will be described below based on this.

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

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

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

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

For example, the first lens assembly and the second lens assembly may be moving lenses that move through a coil, magnet, and guide pin, and the third lens assembly may be a fixed lens, but the lens assembly is not limited thereto. For example, the third lens assembly may function as a focator to image light at a specific location, and the first lens assembly may function to reimage the image formed in the third lens assembly, which is the condenser, at another location. It can perform a variator function. Meanwhile, in the first lens assembly, the distance to the subject or the image distance may change significantly, resulting in a large change in magnification, and the first lens assembly, which is a variable magnification, may play an important role in changing the focal length or magnification of the optical system. Meanwhile, the point where an image is formed in the first lens assembly, which is a variable sensor, may differ slightly depending on the location. Accordingly, the second lens assembly can perform a position compensation function for the image formed by the inverter. For example, the second lens assembly may perform a compensator function to accurately image an image imaged by the first lens assembly, which is a variable sensor, at the actual image sensor position. For example, the first lens assembly and the second lens assembly may be driven by electromagnetic force caused by interaction between a coil and a magnet. The above description can be applied to the lens assembly described later.

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

FIG. 4 is a perspective view of a first camera actuator according to an embodiment, and FIG. 5 is an exploded perspective view of a first camera actuator according to an embodiment.

Referring to FIGS. 4 and 5, the first camera actuator 1100 according to the embodiment includes a shield can 1110, a first housing 1120, a mover 1130, a rotating unit 1140, and a first driving unit 1150. Includes.

The mover 1130 may include a holder 1131 and an optical member 1132 seated on the holder 1131. And the rotating unit 1140 includes a tilting guide unit 1141, a first magnetic substance 1142 and a second magnetic substance 1143 that are spaced apart from each other with the tilting guide unit 1141 in between and have a coupling force. In addition, the first driving unit 1150 includes a driving magnet 1151 (e.g., a first driving magnet), a driving coil 1152 (e.g., a first driving coil), a yoke part (not shown), and a Hall sensor part 1153. ) and a first substrate portion 1154.

The shield can 1110 may be located on the outermost side of the first camera actuator 1100 to surround the rotating part 1140 and the first driving part 1150, which will be described later.

This shield can 1110 can block or reduce electromagnetic waves generated from the outside. Accordingly, the occurrence of malfunctions in the rotating unit 1140 or the first driving unit 1150 may be reduced.

The first housing 1120 may be located inside the shield can 1110. Additionally, the first housing 1120 may be located inside the first substrate portion 1154, which will be described later. The first housing 1120 may be fitted or aligned with the shield can 1110 and fastened to each other.

In this specification, as described above, the third direction (Z-axis direction) corresponds to the direction of the optical axis, and the first direction (X-axis direction) and the second direction (Y-axis direction) are directions perpendicular to the optical axis and are connected to the first camera. It can be tilted by an actuator.

The first housing 1120 may include a first housing side 1121, a second housing side 1122, a third housing side 1123, and a fourth housing side 1124.

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

The third housing side 1123 may contact the first housing side 1121, the second housing side 1122, and the fourth housing side 1124. And the third housing side 1123 may be the bottom of the first housing 1120.

And the first housing side 1121 may include a first housing hole 1121a. A first coil 1152a, which will be described later, may be located in the first housing hole 1121a.

Additionally, the second housing side 1122 may include a second housing hole 1122a. And a second coil 1152b, which will be described later, may be located in the second housing hole 1122a.

The first coil 1152a and the second coil 1152b may be combined with the first substrate portion 1154. In an embodiment, the first coil 1152a and the second coil 1152b are electrically connected to the first substrate 1154 so that current may flow. This current is an element of electromagnetic force that allows the first camera actuator to tilt about the X-axis.

The third housing side 1123 may include a third housing hole 1123a. A third coil 1152c, which will be described later, may be located in the third housing hole 1123a. The third coil 1152 may be coupled to the first substrate portion 1154. Additionally, the third coil 1152c is electrically connected to the first substrate 1154 so that current can flow. This current is an element of electromagnetic force that allows the first camera actuator to tilt about the Y axis.

The fourth housing side 1124 may include a housing groove 1124a. For example, the housing groove 1124a may be located on at least one of the outer surface or the inner surface of the fourth housing side 1124. And a second magnetic material 1143 may be disposed in the housing groove 1124a. Additionally, the first magnetic material 1142 may be positioned corresponding to the second magnetic material 1143 with the tilting guide unit 1141 therebetween. Accordingly, the first housing 1120 may be coupled to the tilting guide unit 1141 and the mover 1130 by magnetic force generated by the first magnetic material 1142 and the second magnetic material 1143.

Additionally, the first housing 1120 may include a receiving portion 1125 formed by the first housing side 1121 to the fourth housing side 1124. A mover 1130 may be located in the receiving portion 1125.

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

The holder 1131 and the optical member 1132 may be seated in the receiving portion 1125 of the first housing 1120. The holder 1131 is a first holder outer surface to a fourth holder outer surface corresponding to the first housing side 1121, the second housing side 1122, the third housing side 1123, and the fourth housing side 1124, respectively. May include sides. And the first driving coil 1152 may be located in the seating groove formed on the outer surface of the holder 1131. A detailed explanation of this will be provided later.

The optical member 1132 may be seated on the holder 1131. For this purpose, the holder 1131 may have a seating surface, and the seating surface may be formed by a receiving groove. The optical member 1132 may include a reflection portion disposed therein. However, it is not limited to this.

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

The rotating unit 1140 includes a tilting guide unit 1141, a first magnetic body 1142 having a bonding force with the tilting guide unit 1141, and a first magnetic body located within the tilting guide unit 1141 or the housing (particularly, the fourth housing side). 2 It may include a magnetic material 1143. However, the first magnetic material 1142 and the second magnetic material 1143 are located in the mover 1130, the tilting guide part 1141, and the housing 1120, so that the housing 1120, the tilting guide part 1141, and the mover 1130 ) can provide binding force between.

The tilting guide unit 1141 may be combined with the mover 1130 and the first housing 1120 described above. This tilting guide unit 1141 may be placed adjacent to the optical axis. As a result, the actuator according to the embodiment can easily change the optical path according to the first and second axis tilt, which will be described later.

The tilting guide unit 1141 may include a first protrusion spaced apart in the first direction (X-axis direction) and a second protrusion spaced apart in the second direction (Y-axis direction). Additionally, the first protrusion and the second protrusion may protrude in opposite directions. A detailed explanation of this will be provided later.

The first magnetic material 1142 may be located within the outer surface of the holder 1131. In an embodiment, the first magnetic material 1142 may be located on the outer surface of the fourth holder 1131. And the second magnetic material 1143 may be located in the housing groove 1124a of the fourth housing side 1124.

By this configuration, the tilting guide unit 1141 is moved between the holder 1131 and the housing 1120 by the magnetic force (e.g., attractive force) between the first magnetic material 1142 and the second magnetic material 1143. It can be pressurized by the housing 1120. As a result, the tilting guide part 1141 and the holder 1131 within the housing 1120 can be spaced apart from the bottom of the housing within the receiving part 1125. That is, the tilting guide unit 1141 and the holder 1131 can be coupled to the housing 1120. However, as described above, the first magnetic material 1142 and the second magnetic material 1143 may be magnets of different or the same polarity, or may be yokes, etc., and may be made of materials that have an attractive or repulsive force.

The first driving unit 1150 includes a driving magnet 1151, a driving coil 1152, a yoke unit (not shown), a Hall sensor unit 1153, and a first substrate unit 1154. The first driving unit 1150 can move, rotate, or tilt the mover 1130.

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

The first magnet 1151a, the second magnet 1151b, and the third magnet 1151c may each be located on the outer surface of the holder 1131. And the first magnet 1151a and the second magnet 1151b may be positioned to face each other. The third magnet 1151c may be located on the bottom of the holder 1131, that is, on the outer surface of the third holder. A detailed explanation of this will be provided later.

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

The first coil 1152a may be positioned to correspond to the first magnet 1151a. That is, the first coil 1152a may be arranged to face the first magnet 1151a. Accordingly, the first coil 1152a may be located in the first housing hole 1121a of the first housing side 1121, as described above.

Additionally, the second coil 1152b may be positioned to correspond to the second magnet 1151b. That is, the second coil 1152b may be arranged to face the second magnet 1151b. Accordingly, the second coil 1152b may be located in the second housing hole 1122a of the second housing side 1122, as described above.

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

The third coil 1152c may be positioned to correspond to the third magnet 1151c. For example, the third coil 1152c may be located in the third housing hole 1123a of the third housing side 1123. Additionally, the third housing hole 1123a may have a different area from the first housing hole and the second housing hole. Accordingly, Y-axis tilting through the third coil 1152c can be easily performed.

The third coil 1152c may be located at a bisecting point between the first coil 1152a and the second coil 1152b. With this configuration, Y-axis tilting can be balanced without tilting to one side due to the electromagnetic force generated by the current flowing in the third coil 1152c.

The yoke portion (not shown) may be located between the driving magnet 1151 and the holder 1131. The yoke portion (not shown) is located on the outer surface of the first holder and the outer surface of the second holder of the holder 1131 to easily couple the driving magnet to the holder 1131. For example, the yoke portion (not shown) may be disposed in a seating groove located on the outer surface of the holder and may have attractive force with the driving magnet 1151. That is, the yoke portion (not shown) can improve the coupling force between the driving magnet 1151 and the holder 1131.

The Hall sensor unit 1153 may include a plurality of Hall sensors. In an embodiment, the Hall sensor unit 1153 may include a first Hall sensor 1153a and a second Hall sensor 1153b. The first Hall sensor 1153a may be located inside or outside the first coil 1152a or the second coil 1152b. The first Hall sensor 1153a can detect magnetic flux changes inside the first coil 1152a or the second coil 1152b. Accordingly, the first Hall sensor 1153a can sense the positions of the first and second magnets 1151a and 1251b. Additionally, the second Hall sensor 1153b may be located inside or outside the third coil 1152c. The second Hall sensor 1153b can sense the position of the third coil 1152c. The first camera actuator according to the embodiment can control X-axis or Y-axis tilt through this. This Hall sensor unit may be composed of a plurality of sensors.

The first substrate unit 1154 may be located below the first driving unit 1150. The first substrate unit 1154 may be electrically connected to the driving coil 1152 and the hall sensor unit 1153. For example, current is applied to the driving coil 1152 through the first substrate 1154, and accordingly, the mover 1130 may be tilted along the X-axis or Y-axis. For example, the first substrate unit 1154 may be combined with the driving coil 1152 and the Hall sensor unit 1153 through SMT. However, it is not limited to this method.

The first substrate portion 1154 is located between the shield can 1110 and the first housing 1120 and can be coupled to the shield can and the first housing 1120. The coupling method can be implemented in various ways as described above. And through the above combination, the driving coil 1152 and the Hall sensor unit 1153 can be located within the outer surface of the first housing 1120.

This first substrate portion 1154 includes a circuit board with a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), and a rigid flexible printed circuit board (RigidFlexible PCB). can do. However, it is not limited to these types.

Figure 6 is a perspective view of the first housing in the first camera actuator according to the embodiment.

Referring to FIG. 6, the first housing 1120 may include a first housing side 1121, a second housing side 1122, a third housing side 1123, and a fourth housing side 1124.

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

The third housing side 1123 may contact the first housing side 1121, the second housing side 1122, and the fourth housing side 1124. And the third housing side 1123 may be the bottom of the first housing 1120.

And the first housing side 1121 may include a first housing hole 1121a. A first coil 1152a, which will be described later, may be located in the first housing hole 1121a.

Additionally, the second housing side 1122 may include a second housing hole 1122a. And a second coil 1152b, which will be described later, may be located in the second housing hole 1122a.

Furthermore, the second housing side 1122 or the first housing side 1121 may include a control element groove 1121b. In an embodiment, the second housing side 1122 may include a control element groove 1121b. In addition, a driver, control element, processor, etc. electrically connected to the board may be located in the control element groove 1121b.

The first coil 1152a and the second coil 1152b may be combined with the first substrate portion 1154. In an embodiment, the first coil 1152a and the second coil 1152b are electrically connected to the first substrate 1154 so that current may flow. This current is an element of electromagnetic force that allows the first camera actuator to tilt about the X-axis.

Additionally, the third housing side 1123 may be disposed between the first housing side 1121 and the second housing side 1122. The third housing side 1123 may be a bottom portion of the housing 1120. A third coil 1152c is located in the third housing hole 1123a of the third housing side 1123, and the current flowing through the third coil 1152c is an electromagnetic force that allows the first camera actuator to tilt based on the Y axis. It is an element of

The fourth housing side 1124 may include a housing groove 1124a. The second magnetic material described above can be seated in the housing groove 1124a. Accordingly, the first housing 1120 can be coupled to the tilting guide unit and the holder by magnetic force, etc.

Additionally, the fourth housing side portion 1124 may include a second protruding groove PH2 that is spaced apart and symmetrically disposed with respect to the housing groove 1124a. There are a plurality of second protrusion grooves PH2, and the second protrusion of the tilting guide part can be seated. In this specification, it is explained that a plurality of first protruding grooves PH1 overlap in the first direction (X-axis direction), and a plurality of second protruding grooves overlap in the second direction (Y-axis direction). However, when the positions of the first protrusion and the second protrusion are changed, the positions of the first protrusion groove and the second protrusion groove may also be changed corresponding to the positions of the first protrusion and the second protrusion.

Additionally, the first housing 1120 may include a receiving portion 1125 formed by the first to fourth housing sides 1121 to 1124. A mover 1130 may be located in the receiving portion 1125.

Figure 7 is a perspective view of an optical member of a first camera actuator according to an embodiment.

The optical member 1132 may be seated on the holder. This optical member 1132 may be a right-angled prism as a reflector, but is not limited thereto.

In an embodiment, the optical member 1132 may have a protrusion (not shown) on a portion of the outer surface. The optical member 1132 can be easily coupled to the holder through a protrusion (not shown). Additionally, the holder may be coupled to the optical member 1132 by having grooves or protrusions.

Additionally, the bottom surface 1132b of the optical member 1132 may be seated on the seating surface of the holder. Accordingly, the bottom surface 1132b of the optical member 1132 may correspond to the seating surface of the holder. In an embodiment, the bottom surface 1132b may be formed as an inclined surface in the same way as the seat of the holder. Accordingly, the prism moves as the holder moves, and the optical member 1132 can be prevented from being separated from the holder due to the movement.

Additionally, a groove or protrusion is formed on the bottom surface 1132b of the optical member 1132 and a bonding member is applied, so that the optical member 1132 can be coupled to the holder. Alternatively, the holder may be coupled to the optical member 1132 by applying a bonding member to the groove or protrusion of the holder.

Additionally, as described above, the optical member 1132 may have a structure capable of reflecting light reflected from the outside (eg, an object) into the inside of the camera module. As an example, the optical member 1132 may be made of a single mirror. Additionally, the optical member 1132 can change the path of reflected light to improve the 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 expanding the optical path while minimizing the thickness. Additionally, it should be understood that a camera module including a camera actuator according to an embodiment may provide a high range of magnification by expanding the optical path while minimizing the thickness.

Figure 8 is a perspective view of the holder according to the embodiment, Figures 9 and 10 are one side view of the holder according to the embodiment, Figure 11 is another side view of the holder according to the embodiment, and Figure 12 is a view of the holder according to the embodiment. It is a top view, and Figure 13 is a bottom view of the holder according to the embodiment.

Referring to FIGS. 8 to 13 , the holder 1131 according to the embodiment may include a seating surface 1131k on which the optical member rests. The seating surface 1131k may be an inclined surface. Additionally, the holder 1131 may include a chin portion 1131t on the upper portion of the seating surface 1131k. In the holder 1131, the jaw portion 1131t can prevent the optical member 1132 from moving. Furthermore, the seating surface 1131k includes a plurality of grooves, and a bonding member may be applied to the grooves. Accordingly, the optical member can be easily combined with the seating surface 1131k. And the holder 1131 may include a holder protrusion 1131p extending upward on its upper surface. The holder protrusion 1131p tilts in the first direction (X-axis direction) or the second direction (Y-axis direction) and may operate as a stopper.

And the holder 1131 according to the embodiment may include a cavity (CV). The cavity CV may be located between the first holder outer surface 1131S1 and the second holder outer surface 1131S2, which will be described later. And an optical member can be seated in the cavity (CV).

The holder 1131 may include a holder hole 1131h that at least partially penetrates the holder 1131 in the second direction (Y-axis direction). The holder hole 1131h is symmetrical to the control element hole in the second direction (Y-axis direction), so that heat dissipation efficiency for heat generated from the control element can be improved. Furthermore, the weight of the holder 1131 can be reduced by the holder hole 1131h, thereby improving driving efficiency for the mover's X-axis or Y-axis tilt.

Additionally, the holder 1131 may include a plurality of outer surfaces. For example, the holder 1131 may include a first holder outer surface 1131S1, a second holder outer surface 1131S2, a third holder outer surface 1131S3, and a fourth holder outer surface 1131S4.

The first holder outer surface 1131S1 may be positioned to face the second holder outer surface 1131S2. That is, the first holder outer surface 1131S1 may be symmetrically disposed with respect to the second holder outer surface 1131S2 and the first direction (X-axis direction).

The first holder outer surface 1131S1 may be positioned to face the first housing side 1121. And the second holder outer surface 1131S2 may be positioned to face the second housing side 1122.

Additionally, the first holder outer surface 1131S1 may include a first seating groove 1131S1a. And the second holder outer surface 1131S2 may include a second seating groove 1131S2a. The first seating groove 1131S1a and the second seating groove 1131S2a may be arranged symmetrically with respect to the first direction (X-axis direction).

Additionally, a first magnet may be placed in the first seating groove (1131S1a), and a second magnet may be placed in the second seating groove (1131S2a). Corresponding to the positions of the first seating groove 1131S1a and the second seating groove 1131S2a, the first magnet and the second magnet may also be arranged symmetrically with respect to the first direction (X-axis direction).

As described above, due to the positions of the first and second seating grooves and the first and second magnets, the electromagnetic force induced by the magnets is applied to the first holder outer surface (S1231S1) and the second holder outer surface (1131S2) on the same axis. can be provided. For example, the area applied on the first holder outer surface (S1231S1) (e.g., the part where the electromagnetic force is strongest) and the area applied on the second holder outer surface (S1231S2) (e.g., the part where the electromagnetic force is strongest) are It may be located on an axis parallel to the second direction (Y-axis direction). As a result, X-axis tilting can be performed accurately.

The third holder outer surface 1131S3 is in contact with the first holder outer surface 1131S1 and the second holder outer surface 1131S2, and moves in a second direction in the first holder outer surface 1131S1 and the second holder outer surface 1131S2. It may be an outer surface extending in the (Y-axis direction). Additionally, the third holder outer surface 1131S3 may be located between the first holder outer surface 1131S1 and the second holder outer surface 1131S2.

The third holder outer surface 1131S3 may be the bottom of the holder 1131. The third holder outer surface 1131S3 may be positioned to face the third housing side.

Additionally, the third holder outer surface 1131S3 may include an extension stopper (not shown) extending downward. Accordingly, it is possible to set a limit on the range in which the holder 1131 moves or moves up and down in the Y-axis tilt or first direction (X-axis direction) within the housing and at the same time prevents damage due to movement of the holder 1131. You can.

And the third holder outer surface (1131S3) may include a third seating groove (1131S3a). A third magnet may be placed in the third seating groove 1131S3a. For example, the area of the third seating groove (1131S3a) may be different from the areas of the first seating groove (1131S1a) and the second seating groove (1131S2b). The area of the third seating groove (1131S3a) may be larger than the areas of the first seating groove (1131S1a) and the second seating groove (1131S2b). Accordingly, rotation in the first direction (X-axis direction) or tilt in the second direction (Y-axis direction) can be easily performed through the third magnet disposed in the third seating groove 1131S3a.

The fourth holder outer surface 1131S4 is in contact with the first holder outer surface 1131S1 and the second holder outer surface 1131S2, and extends from the third holder outer surface 1131S3 in the first direction (X-axis direction). It could be the side. Additionally, the fourth holder outer surface 1131S4 may be located between the first holder outer surface 1131S1 and the second holder outer surface 1131S2. This fourth holder outer surface 1131S4 may be disposed on the third holder outer surface 1131S3.

The fourth holder outer surface 1131S4 may include a fourth seating groove 1131S4a. The first magnetic material may be seated in the fourth seating groove 1131S4a. The fourth seating groove 1131S4a may be positioned to face the first surface of the tilting guide unit.

The fourth holder outer surface 1131S4 may include a first protruding groove PH1 spaced apart in the first direction (X-axis direction) with respect to the fourth seating groove 1131S4a. The first protrusion of the tilting guide unit may be seated in the first protrusion groove PH1. The holder 1131 may be tilted along the X-axis based on the first protrusion. Furthermore, the holder 1131 may be tilted along the Y-axis based on the second protrusion.

As described above, there are a plurality of first protruding grooves PH1, and they may overlap in the first direction (X-axis direction). Accordingly, when the mover tilts the X-axis or rotates in the second direction (Y-axis direction), it can be done accurately without tilting to one side. In embodiments, the OIS function may be performed accurately.

Furthermore, the holder 1131 according to the embodiment may further include stoppers (US, LS). And the stopper can contact the first holder outer surface (1131S1) and the second holder outer surface (1131S2).

These stoppers may include an upper stopper (US) disposed on the bottom of the cavity (CV) and a lower stopper (LS) disposed below the bottom of the cavity (CV). In an embodiment, the bottom of the cavity CV may correspond to the seating surface 1131k. That is, the cavity may be surrounded by the first holder outer surface 1131S1, the second holder outer surface 1131S2, and the seating surface 1131k.

In the stopper according to the embodiment, the upper stopper (US) and lower stopper (LS) are each located in the third direction (Z-axis direction) or the optical axis direction on the first holder outer surface (1131S1) and the second holder outer surface (1131S2). It may be located at the end.

Specifically, the holder 1131 may include a first area (S1) and a second area (S2) bisected in the third direction (Z-axis direction) or the optical axis direction. At this time, the first area S1 and the second area S2 may be sequentially arranged in the third direction. Alternatively, the first area S1 may be located between the second area S2 and the rotating part. The area overlapping with the first area S1 in the second direction (Y-axis direction) of the optical member may be smaller than the area overlapping with the second area S2 in the second direction (Y-axis direction).

Additionally, the cross-sectional area of the optical member or cavity (CV) according to the embodiment may increase along the third direction (Z-axis direction) or the optical axis direction. This increase may correspond to the slope of the seating surface 1131k on the plane YZ. Additionally, the cross-sectional area may be the area on the plane (XY). In other words, the cross-sectional area of the holder 1131 according to the embodiment may also decrease along the third direction (Z-axis direction) or the optical axis direction.

Additionally, the maximum cross-sectional area of the cavity CV in the first area S1 may be smaller than the maximum cross-sectional area of the cavity CV in the second area S2. And the area of the cavity (CV) may increase toward the end of the holder 1131. And as the cross-sectional area of the cavity CV in the holder according to the embodiment increases along the third direction (Z-axis direction), deformation of the holder at the end may increase. The deformation of the holder may be due to an impact generated between the holder 1131 and the housing due to tilt. For example, this deformation means a length (eg, mm, ㎛, etc.) bent in the second direction relative to a force (eg, Newton (N)) applied in the second direction.

Accordingly, the upper stopper US and the lower stopper LS may be located in the second area S2 where the cross-sectional area of the cavity CV is larger than that of the first area S1. Accordingly, even if an impact occurs between the housing and the holder 1131 as the holder 1131 and the optical member rotate in the first or second direction, the upper stopper (US) and lower stopper (LS) of the holder (1131) Deformation due to impact can be suppressed at the ends of the outer surfaces (outer surfaces of the first and second holders). Accordingly, the impact applied to the optical members inside the first holder outer surface 1131S1a and the second holder outer surface 1131S2 can be minimized, thereby reducing damage to the optical members. In other words, the impact reliability of the mover can be improved.

These upper stoppers (US) and lower stoppers (LS) may be spaced apart in the first direction (X-axis direction). In an embodiment, the first holder outer surface 1131S1 and the second holder outer surface 1131S2 may include an upper area UA and a lower area BA that are bisected in the first direction (X-axis direction). For example, the upper area (UA) may be located above the lower area (BA). The upper stopper (US) may be located in the upper area (UA). That is, the upper stopper US is in contact with the upper area UA and may overlap in the second direction (Y-axis direction). And the lower stopper LS may be located in the lower area BA. Additionally, the lower stopper LS may contact the lower area BA and overlap in the second direction (Y-axis direction). For example, the upper stopper US may be arranged to overlap the second area S2 and the upper area UA in the second direction (Y-axis direction). Additionally, the lower stopper US may be positioned to overlap the second area S2 and the lower area BA in a second direction (Y-axis direction). Accordingly, the upper stopper US may overlap the optical member in the second direction (X-axis direction).

Additionally, in an embodiment, the lower stopper LS may be disposed closer to the third holder outer surface 1131S3 than the upper stopper US. For example, the distance DL2 between the third holder outer surface 1131S3 and the upper surface of the lower stopper LS may be smaller than the distance DL1 between the third holder outer surface 1131S3 and the upper surface of the upper stopper US.

And the area overlapping with the cavity (CV) or the optical member in the second direction (Y-axis direction) in the upper area (UA) is the area overlapping with the cavity (CV) or the optical member in the second direction (Y-axis direction) in the lower area (BA). may be larger than the overlapping area. Accordingly, the amount of deformation due to impact may be greater in the upper area (UA) than in the lower area (BA) toward the end. In other words, the amount of deformation due to impact may be smaller at the end of the lower area (BA) than the upper area (UA).

In an embodiment, the height H1 of the upper stopper US in the first direction (X-axis direction) may be different from or the same as the height of the lower stopper LS in the first direction (X-axis direction). Additionally, the length L1 of the upper stopper US in the third direction (Z-axis direction) may be different from or the same as the length L2 of the lower stopper LS in the third direction (Z-axis direction). For example, the upper stopper (US) and the lower stopper (LS) may differ in at least one of the above-described height or length. In an embodiment, as shown in the drawing, the height (H1) of the upper stopper (US) is the same as the height of the lower stopper (LS), and the length (L1) of the upper stopper (US) is the length (L2) of the lower stopper (LS). Could it be smaller than this??. Accordingly, the upper stopper US has an area in contact with the second area S2 (e.g., the area on XZ, A1) and the lower stopper LS has an area in contact with the second area S2 (e.g., the area on Z It may be smaller than A2). Accordingly, the first holder outer surface 1131S1 and the second holder outer surface 1131S2 of the holder 1131 may have a larger contact area with the housing in the lower area BA than in the upper area UA. Accordingly, when the holder 1131 is tilted based on the first direction (X-axis direction), the first holder outer surface 1131S1 and the second holder outer surface 1131S2 have a collision area through the stopper in the upper area ( It may be larger in the lower area (BA) compared to UA). Accordingly, the holder 1131 according to the embodiment increases the amount of impact transmitted through the lower stopper (LS) than the amount of impact transmitted through the upper stopper (US), so that the lower area (BA), which has a small amount of deformation due to the impact, receives the impact. You can receive it. In other words, by concentrating the impact due to tilt to the lower area BA, where the amount of deformation due to the impact is small, compared to the upper area UA, the deformation due to the impact in the upper area UA can be suppressed. Accordingly, damage to the optical member can be further reduced. As a result, the impact reliability of the holder according to the embodiment can be further improved.

The upper stopper US and the lower stopper LS may extend from the ends of the first holder outer surface 1131S1 and the second holder outer surface 1131S2 in a direction opposite to the third direction.

Additionally, the upper stopper (US) and lower stopper (LS) may extend inward or toward the cavity (CV). With this configuration, when the holder 1131 is tilted in the second direction (Y-axis direction) or tilted in the first direction, damage caused by impact between the holder and the housing is prevented by the upper stopper (US) and lower stopper (LS). It was possible to suppress it through.

At this time, the area of the upper stopper US on the plane XY may be smaller than the area of the lower stopper LS on the plane XY. The above-described content can be applied in the same way. Furthermore, this configuration may be a result of the location of the optical member or cavity (CV).

And the upper stopper (US) and lower stopper (LS) according to the embodiment may be disposed on the first holder outer surface (1131S1) and the second holder outer surface (1131S2), respectively. Accordingly, there may be a plurality of upper stoppers (US) and lower stoppers (LS). In addition, the upper stopper (US) may be symmetrically disposed on the first holder outer surface 1131S1 and the second holder outer surface 1131S2 with respect to the first direction (X-axis direction) or the third direction (Z-axis direction). You can. In addition, the lower stopper LS may be symmetrically disposed on the first holder outer surface 1131S1 and the second holder outer surface 1131S2 with respect to the first direction (X-axis direction) or the third direction (Z-axis direction). You can.

Additionally, the upper stopper (US) and lower stopper (LS) may be made of an elastic material. Accordingly, the upper stopper (US) and the lower stopper (LS) can relieve shock to the housing by rotating the holder 1131. Furthermore, as described above, the impact resistance of the holder 1131 can be improved by the upper stopper (US) and lower stopper (LS).

FIG. 14 is a perspective view of a tilting guide portion of a first camera actuator according to an embodiment, FIG. 15 is a perspective view in a different direction from FIG. 14, and FIG. 16 is a cross-sectional view taken along line FF' in FIG. 14.

Referring to FIGS. 14 to 16 , the rotating unit 140 according to the embodiment may include a tilting guide unit 1141, a first magnetic body 1142, and a second magnetic body 1143. The first magnetic material 1142 and the second magnetic material 1143 may be positioned correspondingly with respect to the tilting guide unit 1141. In addition, the above-described contents can be applied equally to the first magnetic material 1142 and the second magnetic material 1143 to provide coupling force between the mover, the tilting guide portion 1141, and the housing.

First, the tilting guide unit 1141 includes a base BS, a first protrusion PR1 protruding from the first surface 1141a of the base BS, and a first protrusion PR1 protruding from the second surface 1141b of the base BS. 2 may include a protrusion (PR2). Additionally, depending on the structure, the first protrusion and the second protrusion may have opposite sides, but will be described below based on the drawings. In addition, the first protrusion PR1 and the second protrusion PR2 may be formed integrally with the base BS, and as shown in the drawing, the first protrusion PR1 and the second protrusion RP2 have a spherical shape like a ball. You must understand that you can have .

First, the base BS may include a first surface 1141a and a second surface 1141b opposing the first surface 1141a. That is, the first surface 1141a may be spaced apart from the second surface 1141b in the third direction (Z-axis direction), and may be opposite or opposing outer surfaces within the tilting guide unit 1141. . The first surface 1141a may be positioned to face the side of the fourth housing, and the second surface 1141b may be positioned to face the outer surface of the fourth holder.

The first surface 1141a and the second surface 1141b may include a plurality of holes or grooves, and the weight of the tilting guide unit 1141 can be reduced through the holes or grooves.

The tilting guide unit 1141 may include a first protrusion PR1 extending to one side on the first surface 1141a. According to an embodiment, the first protrusion PR1 may protrude from the first surface 1141a toward the fourth housing side. The first protrusion PR1 may include a plurality of 1-1 protrusions PR1a and 1-2 protrusions PR1b.

The 1-1 protrusion PR1a and the 1-2 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). Additionally, in the embodiment, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be bisected by an imaginary line extending in the first direction (X-axis direction).

Additionally, the 1-1st protrusion PR1a and the 1-2nd protrusion PR1b may have a curvature and, for example, may have a hemispherical shape. Additionally, the 1-1st protrusion PR1a and the 1-2nd protrusion PR1b may contact the first protrusion groove of the housing at a point furthest from the first surface 1141a of the base BS.

Additionally, an alignment groove (not shown) may be located on the first surface 1141a. An alignment groove (not shown) may be disposed on one side of the first surface 1141a to provide an assembly position or direction of the tilting guide unit 1141 during the assembly process.

Additionally, the tilting guide unit 1141 may include a second protrusion PR2 extending to one side on the second surface 1141a. According to the embodiment, the second protrusion PR2 may protrude toward the housing from the second surface 1141b. Additionally, there are a plurality of second protrusions PR2 and, in an embodiment, may include a 2-1 protrusion PR2a and a 2-2 protrusion PR2b.

The 2-1st protrusion PR2a and the 2-2nd 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). Additionally, in the embodiment, the 2-1 protrusion PR2a and the 2-2 protrusion PR2b may be bisected by an imaginary line extending in the second direction (Y-axis direction).

The 2-1st protrusion PR2a and the 2-2nd protrusion PR2b may have a curvature and, for example, may have a hemispherical shape. And the 2-1st protrusion PR2a and the 2-2nd protrusion PR2b may contact the second protrusion groove at a point spaced apart from the second surface 1141b of the base BS.

The 1-1 protrusion PR1a and the 1-2 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 the 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 By this configuration, the actuator according to the embodiment can ensure that the X-axis tilt angle has the same range with respect to the X-axis. In other words, the tilting guide unit 1141 determines the range in which the holder can tilt the X axis (e.g., positive/negative range) on the The same can be provided as a standard.

Additionally, 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 the embodiment, the 2-1 protrusion (PR2a) and the 2-2 protrusion (PR2b) are located at the center of the space between the 1-1 protrusion (PR1a) and the 1-2 protrusion (PR1b) in the first direction. can be located By this configuration, the actuator according to the embodiment can ensure that the Y-axis tilt angle has the same range with respect to the Y-axis. In other words, based on the 2-1st protrusion (PR2a) and the 2-2nd protrusion (PR2b), the tilting guide unit 1141 and the holder determine the Y-axis tiltable range (e.g., positive/negative range) on the Y-axis. The same can be provided as a standard.

Specifically, the first surface 1141a may include a first outer line (M1), a second outer line (M2), a third outer line (M3), and a fourth outer line (M4). The first outer line (M1) and the second outer line (M2) may face each other, and the third outer line (M3) and the fourth outer line (M4) may face each other. And a third outer line (M3) and a fourth outer line (M4) may be located between the first outer line (M1) and the second outer line (M2). And the first outer line (M1) and the second outer line (M2) are perpendicular to the first direction (X-axis direction), but the third outer line (M3) and the fourth outer line (M4) are perpendicular to the first direction (X axis direction). It can be parallel to the axis direction.ㅇ

At this time, the first protrusion PR1 may be located on the first virtual line VL1. Here, the first virtual line VL1 is a line that bisects the first outer line M1 and the second outer line M2. Alternatively, the first and third virtual lines VL1 and VL1' are lines that bisect the base BS in the second direction (Y-axis direction). Accordingly, the tilting guide unit 1141 can easily perform X-axis tilt through the first protrusion PR1. In addition, since the tilting guide unit 1141 performs the X-axis tilt based on the first virtual line VL1, rotational force can be uniformly applied to the tilting guide unit 1141. Accordingly, the X-axis tilt can be performed precisely and the reliability of the device can be improved.

Additionally, the 1-1 protrusion PR1a and the 1-2 protrusion PR1b may be symmetrical with respect to the first virtual line VL1 and the second virtual line VL2. Alternatively, the 1-1st protrusion PR1a and the 1-2nd protrusion PR1b may be positioned symmetrically with respect to the first center point C1. With this configuration, when the X-axis is tilted, the support force supported by the first protrusion PR1 can be equally applied to the upper and lower sides with respect to the second imaginary line VL2. Accordingly, the reliability of the tilting guide unit can be improved. Here, the second virtual line VL2 is a line that bisects the third outer line M3 and the fourth outer line M4. Alternatively, the second and fourth virtual lines LV2 and LV2' are lines that bisect the base BS in the first direction (X-axis direction).

And the first center point C1 may be the 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 depending on the shape of the tilting guide unit 1141.

Additionally, the second surface 1141b may include a fifth outer line (M1'), a sixth outer line (M2'), a seventh outer line (M3'), and an eighth outer line (M4'). The fifth outer line (M1') and the sixth outer line (M2') may face each other, and the seventh outer line (M3') and the eighth outer line (M4') may face each other. And the seventh outer line (M3') and the eighth outer line (M4') may be located between the fifth outer line (M1') and the sixth outer line (M2'). And the fifth outer line (M1') and the sixth outer line (M2') are perpendicular to the first direction (X-axis direction), but the seventh outer line (M3') and the eighth outer line (M4') are perpendicular to the first direction (X-axis direction). 1 It can be parallel to direction (X-axis direction).

In addition, since the tilting guide unit 1141 performs Y-axis tilt based on the fourth virtual line (VL2'), rotational force can be uniformly applied to the tilting guide unit 1141. Accordingly, the Y-axis tilt can be performed precisely and the reliability of the device can be improved.

Additionally, the 2-1st protrusion PR2a and the 2-2nd protrusion PR2b may be symmetrically disposed on the third virtual line VL1' on the fourth virtual line VL2'. Alternatively, the 2-1st protrusion (PR2a) and the 2-2nd protrusion (PR2b) may be positioned symmetrically with respect to the second center point (C1'). With this configuration, when the Y-axis is tilted, the support force supported by the second protrusion PR2 can be equally applied to the upper and lower sides of the tilting guide unit based on the fourth virtual line VL2'. Accordingly, the reliability of the tilting guide unit can be improved. Here, the third virtual line (VL1') is a line that bisects the fifth outer line (M1') and the sixth outer line (M2'). And the second center point (C1') may be the 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 depending on the shape of the tilting guide unit 1141.

However, the above-described configuration is an example, and the tilting guide unit 1141 may have various shapes for X-axis tilt or Y-axis tilt.

FIG. 17 is a perspective view of a first camera actuator according to an embodiment, FIG. 18 is a cross-sectional view taken along BB' in FIG. 17, and FIG. 19 is a cross-sectional view taken along CC' in FIG. 17.

17 to 19, the first coil 1152a may be located on the first housing side 1121, and the first magnet 1151a may be located on the first holder outer surface 1131S1 of the holder 1131. there is. Accordingly, the first coil 1152a and the first magnet 1151a may be positioned opposite to each other. The first magnet 1151a may at least partially overlap the first coil 1152a in the second direction (Y-axis direction).

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

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

Additionally, the second protrusions PR2a and PR2b of the tilting guide unit 1141 are located within the second protrusion groove PH2 of the housing 1120 and may contact the second protrusion groove PH2. And when performing an X-axis tilt, the second protrusions PR2a and PR2b may be the reference axis (or rotation axis) of the tilt. Accordingly, the tilting guide unit 1141 and the mover 1130 can move up and down.

Additionally, according to the embodiment, the fourth housing side 1124 may include the housing groove 1124a described above. Additionally, a second magnetic material 1143 may be located in the housing groove 1124a. The housing groove 1124a may be positioned to correspond to the first magnetic material 1142.

In an embodiment, the housing groove 1124a may be located on the outer or inner surface of the fourth housing side 1124. Hereinafter, the description will be made based on the fact that the housing groove 1124a is located on the outer surface of the fourth housing side portion 1124. The housing groove 1124a may have a shape in which one side is open on the inner surface of the fourth housing side portion 1124. For example, the housing groove 1124a may have a structure that is open at one end of the inner surface of the fourth housing side 1124 toward the first housing side.

In addition, the contact point between the second protrusion PR2 and the fourth housing side 1124 and the center of the second protrusion groove PH2 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 can improve the accuracy of X-axis tilt through the second protrusion PR2.

And, as described above, the first Hall sensor 1153a may be located on the outside for electrical connection and coupling with the substrate portion 1154. However, it is not limited to these locations.

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

The tilting guide unit 1141 may be located on the fourth holder outer surface 1131S4 of the holder 1131 as described above. The first magnetic material 1142 may be seated in the fourth seating groove 1131S4a. The fourth seating groove 1131S4a may be positioned to at least partially overlap the housing groove 1124a of the fourth housing side 1124 in the third direction (Z-axis direction). For example, the center of the fourth seating groove 1131S4a and the center of the housing groove 1124a may overlap in the third direction (Z-axis direction) or may be located side by side or parallel in the third direction (Z-axis direction).

FIG. 20 is a diagram illustrating a first driving unit of a first camera actuator according to an embodiment.

Referring to FIG. 20, the driving unit 1150 includes a driving magnet 1151, a driving coil 1152, a Hall sensor unit 1153, and a substrate unit 1154.

Additionally, as described above, the driving magnet 1151 may include a first magnet 1151a, a second magnet 1151b, and a third magnet 1151c that provide driving force by electromagnetic force. The first magnet 1151a, the second magnet 1151b, and the third magnet 1151c may each be located on the outer surface of the holder 1131.

Additionally, the driving coil 1152 may include a plurality of coils. In an embodiment, the driving coil 1152 may include a first coil 1152a, a second coil 1152b, and a third coil 1152c.

The first coil 1152a may be positioned opposite the first magnet 1151a. Accordingly, the first coil 1152a may be located in the first housing hole 1121a of the first housing side 1121, as described above. Additionally, the second coil 1152b may be positioned opposite the second magnet 1151b. Accordingly, the second coil 1152b may be located in the second housing hole 1122a of the second housing side 1122, as described above.

The first camera actuator according to the embodiment controls the rotation of the mover 1130 to the first axis (X-axis direction) or the second axis (Y-axis direction) by electromagnetic force between the driving magnet 1151 and the driving coil 1152. When implementing OIS, the occurrence of decenter or tilt can be minimized to provide the best optical characteristics.

In addition, according to the embodiment, OIS is implemented through the tilting guide part 1141 of the rotating part 1140 disposed between the housing 1120 and the mover 1130, thereby eliminating the size limitation of the actuator, creating an ultra-slim, ultra-small camera actuator and A camera module including this may be provided.

The substrate portion 1154 may include a first substrate side 1154a, a second substrate side 1154b, and a third substrate side 1154c.

The first substrate side 1154a and the second substrate side 1154b may be disposed to face each other. And the third substrate side 1154c may be located between the first substrate side 1154a and the second substrate side 1154b.

Additionally, the first substrate side 1154a may be located between the first housing side and the shield can, and the second substrate side 1154b may be located between the second housing side and the shield can. Additionally, the third substrate side 1154c may be located between the third housing side and the shield can and may be the bottom of the substrate portion 1154.

The first substrate side portion 1154a may be coupled to the first coil 1152a and electrically connected to the first coil 1152a. Additionally, the first substrate side 1154a may be coupled to and electrically connected to the first Hall sensor 1153a.

The second substrate side 1154b may be coupled to and electrically connected to the second coil 1152b. Additionally, it should be understood that the second substrate side 1154b may be coupled to and electrically connected to the first Hall sensor.

The third substrate side 1154c may be coupled to and electrically connected to the third coil 1152c. Additionally, the third substrate side 1154c may be coupled to and electrically connected to the second Hall sensor 1153b.

FIG. 21 is a perspective view of a first camera actuator according to an embodiment, FIG. 22 is a cross-sectional view taken along line DD' in FIG. 21, and FIG. 23 is an example of movement of the first camera actuator shown in FIG. 22.

Referring to FIGS. 21 to 23, Y-axis tilt may be performed. That is, OIS can be implemented by rotating in the first direction (X-axis direction).

In an embodiment, the third magnet 1151c disposed at the lower part of the holder 1131 forms electromagnetic force with the third coil 1152c to tilt the guide unit 1141 and the mover 1130 in the first direction (X-axis direction). ) can be tilted or rotated.

Specifically, the tilting guide unit 1141, the housing 1120, and the mover 1130 may be coupled to each other by the first magnetic material 1142 and the second magnetic material 1143. Additionally, 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 1130. Additionally, the tilting guide unit 1141 may rotate or tilt the second protrusion PR2 protruding toward the housing in the first direction (X-axis direction) about the reference axis (or rotation axis).

For example, the mover 1130 is moved along the OIS may be implemented by rotating the first angle θ1 in the direction (X1->X1a or X1b). The first angle θ1 may be ±1° to ±3°. However, it is not limited to this.

FIG. 24 is a perspective view of a first camera actuator according to an embodiment, FIG. 25 is a cross-sectional view taken along EE' in FIG. 24, and FIG. 26 is an example of movement of the first camera actuator shown in FIG. 25.

Referring to FIGS. 24 to 26, OIS may be implemented while the mover 1130 tilts or rotates in the Y-axis direction.

In an embodiment, the first magnet 1151a and the second magnet 1151b disposed in the holder 1131 each form electromagnetic force with the first coil 1152a and the second coil 1152b and move in the second direction (Y). The mover 1130 can be tilted or rotated in the axial direction.

In the first camera actuator according to the embodiment, components that are tilted in the first direction or tilted in the second direction may be different from each other.

Specifically, the housing and the mover 1130 may be coupled to each other by the second magnetic material 1143 in the tilting guide unit 1141. And, as described above, the plurality of first protrusions PR1 may be spaced apart in the first direction (X-axis direction) to support the mover 1130. Additionally, the 2-1st protrusion PR2a and the 2-2nd protrusion PR2b may be in contact with the housing 1120 and support the housing 1120.

Additionally, the tilting guide unit 1141 may rotate or tilt the first protrusion PR1 protruding toward the mover 1130 in a first direction (X-axis direction) with the reference axis (or rotation axis) as the reference axis (or rotation axis).

For example, the second electromagnetic force (F2A, OIS may be implemented by rotating the mover 1130 at a second angle θ2 in the Y-axis direction (Y1->Y1a or Y1b) by F2B). The second angle θ2 may be ±1° to ±3°. However, it is not limited to this.

As such, the first camera actuator according to the embodiment moves the mover 1130 in the first direction (X-axis direction) or the second direction (Y-axis direction) by electromagnetic force between the drive magnet in the prism holder and the drive coil disposed in the housing. By controlling the rotation, the occurrence of decenter or tilt phenomenon can be minimized when implementing OIS and the best optical characteristics can be provided. 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.

FIG. 27 is a perspective view of a second camera actuator according to an embodiment, FIG. 28 is an exploded perspective view of a second camera actuator according to an embodiment, FIG. 29 is a cross-sectional view viewed along GG' in FIG. 27, and FIG. 30 is a view of FIG. 27. This is a cross-sectional view viewed from ‘HH’.

27 to 30, the second camera actuator 1200 according to the embodiment includes a lens unit 1220, a second housing 1230, a second driving unit 1250, a base unit (not shown), and a second camera actuator 1200. 2 It may include a substrate unit 1270. Furthermore, the second camera actuator 1200 may further include a second shield can (not shown), an elastic part (not shown), and a joining member (not shown). Furthermore, the second camera actuator 1200 according to the embodiment may further include an image sensor (IS).

The second shield can (not shown) is located in one area (e.g., the outermost) of the second camera actuator 1200 and includes components described later (lens unit 1220, second housing 1230, elastic unit). (not shown), the second driver 1250, the base unit (not shown), the second substrate 1270, and the image sensor IS).

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

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

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

The lens assembly 1221 may include at least one lens. Additionally, there may be a plurality of lens assemblies 1221, but the description below will be based on one lens assembly.

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

The bobbin 1222 may include an opening area surrounding the lens assembly 1221. And the bobbin 1222 can be combined with the lens assembly 1221 by various methods. Additionally, the bobbin 1222 may include a groove on its side, and may be coupled to the fourth magnet 1252a and the second magnet 1252b through the groove. A joining member or the like may be applied to the groove.

Additionally, the bobbin 1222 may be coupled with elastic portions (not shown) at the top and rear ends. Accordingly, the bobbin 1222 moves in the third direction (Z-axis direction) and may be supported by an elastic part (not shown). That is, the position of the bobbin 1222 can be maintained in the third direction (Z-axis direction). The elastic part (not shown) may be made of a leaf spring.

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

The second housing 1230 may have a hole formed on a side. A fourth coil 1251a and a fifth coil 1251b may be disposed in the hole. The hole may be located to correspond to the groove of the bobbin 1222 described above.

The fourth magnet 1252a may be positioned to face the fourth coil 1251a. Additionally, the second magnet 1252b may be positioned to face the fifth coil 1251b.

The elastic unit (not shown) may include a first elastic member (not shown) and a second elastic member (not shown). The first elastic member (not shown) may be coupled to the upper surface of the bobbin 1222. The second elastic member (not shown) may be coupled to the lower surface of the bobbin 1222. Additionally, the first elastic member (not shown) and the second elastic member (not shown) may be formed of leaf springs as described above. Additionally, the first elastic member (not shown) and the second elastic member (not shown) may provide elasticity for movement of the bobbin 1222.

The second driving unit 1250 may provide driving forces F3 and F4 that move the lens unit 1220 along the third direction (Z-axis direction). The second driving unit 1250 may include a driving coil 1251 (eg, a second driving coil) and a driving magnet 1252 (eg, a second driving magnet).

The lens unit 1220 may move in the third direction (Z-axis direction) due to the electromagnetic force formed between the driving coil 1251 and the driving magnet 1252. There may be a plurality of lens assemblies of the lens unit 1220, and each may move separately along the third direction (Z-axis direction). Additionally, the plurality of lens assemblies may move along the third direction (Z-axis direction) simultaneously. Or, it may be a combination of these movements.

The driving coil 1251 may include a fourth coil 1251a and a fifth coil 1251b. The fourth coil 1251a and the fifth coil 1251b may be disposed in a hole formed on the side of the second housing 1230. And the fourth coil 1251a and the fifth coil 1251b may be electrically connected to the second substrate portion 1270. Accordingly, the fourth coil 1251a and the fifth coil 1251b can receive current, etc. through the second substrate portion 1270.

The driving magnet 1252 may include a fourth magnet 1252a and a fifth magnet 1252b. The fourth magnet 1252a and the fifth magnet 1252b may be placed in the above-described groove of the bobbin 1222 and may be positioned to correspond to the fourth coil 1251a and the fifth coil 1251b.

The base unit (not shown) may be located between the lens unit 1220 and the image sensor IS. Components such as a filter may be fixed to the base portion (not shown). Additionally, the base portion (not shown) may be arranged to surround the image sensor IS. With this configuration, the image sensor IS is free from foreign substances, etc., so the reliability of the device can be improved.

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

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

In addition, the second camera actuator may be comprised of a plurality of lens assemblies. For example, the second camera actuator includes at least one of a first lens assembly (not shown), a second lens assembly (not shown), a third lens assembly (not shown), and a guide pin (not shown). can be placed. The above-described content may be applied to this. Accordingly, the second camera actuator can perform a high-magnification zooming function through the driving unit. For example, the first lens assembly (not shown) and the second lens assembly (not shown) may be moving lenses that move through a driving unit and a guide pin (not shown), and the third lens may be a moving lens. The assembly (not shown) may be, but is not limited to, a fixed lens. For example, the third lens assembly (not shown) may function as a focator to image light at a specific location, and the first lens assembly (not shown) may function as a condenser. It may perform a variator function to re-image the image formed in (not shown) elsewhere. Meanwhile, in the first lens assembly (not shown), the distance to the subject or image distance may change significantly, resulting in a large change in magnification, and the first lens assembly (not shown), which is a variable source, may change the focal length or magnification of the optical system. can play an important role in Meanwhile, the image point formed by the first lens assembly (not shown), which is a variable sensor, may differ slightly depending on the location. Accordingly, the second lens assembly (not shown) may perform a position compensation function for the image formed by the inverter. For example, the second lens assembly (not shown) performs a compensator function to accurately image the point imaged in the first lens assembly (not shown), which is a transformer, at the actual image sensor position. It can be done.

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

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

As shown in FIG. 31, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an autofocus device 1510 provided at the rear.

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

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

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

For example, the camera module 1000 may be comprised of a plurality of camera modules. For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B, and the first camera module 1000A may include the first camera actuator and the second camera actuator described above. It can be included. Accordingly, OIS may be implemented along with AF or zoom functions by the first camera module 1000A.

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

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

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

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

Figure 32 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

For example, Figure 32 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera module 1000 according to an embodiment is applied.

Referring to FIG. 32, the vehicle 700 of the embodiment may be provided with wheels 13FL and 13FR that rotate by a power source and a predetermined sensor. The sensor may be a 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 captures a front image or surrounding image, determines the lane identification situation using the image information, and generates a virtual lane when identification is performed. can do.

For example, the camera sensor 2000 may acquire a front image by photographing the front of the vehicle 700, and a processor (not shown) may acquire image information by analyzing objects included in the front image.

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

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

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

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

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

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

Claims (15)

housing;
A mover including a holder disposed in the housing and an optical member disposed on the holder; and
It includes a driving unit disposed within the housing and moving the mover,
The holder includes a cavity disposed between a first holder outer surface and a second holder outer surface facing each other, and a cavity disposed between the first holder outer surface and the second holder outer surface; and a stopper in contact with the outer surface of the first holder and the outer surface of the second holder,
The stopper includes an upper stopper disposed on the bottom of the cavity; And a lower stopper disposed below the bottom of the cavity,
The upper stopper and the lower stopper are located at ends of the outer surface of the first holder and the second holder in the optical axis direction.
According to paragraph 1,
The holder is bisected in the direction of the optical axis and includes a first area and a second area arranged sequentially.
According to paragraph 2,
The upper stopper and the lower stopper are a camera actuator located in the second area.
According to paragraph 2,
A camera actuator wherein the upper stopper and the lower stopper are spaced apart in a first direction.
According to paragraph 2,
The optical member has an area overlapping with the first area in the second direction that is smaller than an area overlapping with the second area in the second direction,
The second direction is perpendicular to the first direction and the optical axis direction.
According to paragraph 1,
A camera actuator wherein the area of the upper stopper is larger than the area of the lower stopper.
According to clause 6,
The upper stopper is a camera actuator that overlaps the optical member in a second direction.
According to clause 4,
A camera actuator wherein the first holder outer surface and the second holder outer surface include an upper region and a lower region bisected in the first direction.
According to clause 8,
The upper stopper is disposed in the upper area,
The lower stopper is a camera actuator disposed in the lower area.
According to paragraph 1,
The holder is disposed on a third holder outer surface disposed below the first holder outer surface and the second holder outer surface, and on the third holder outer surface between the first holder outer surface and the second holder outer surface. It includes a fourth holder outer surface,
The lower stopper is a camera actuator disposed closer to the outer surface of the third holder than the upper stopper.
According to paragraph 1,
A camera actuator in which the upper stopper and the lower stopper are made of elastic material.
According to paragraph 1,
A camera actuator wherein the cavity increases in cross-sectional area in the direction of the optical axis.
According to paragraph 2,
A camera actuator wherein the maximum cross-sectional area of the cavity in the first area is smaller than the maximum cross-sectional area of the cavity in the second area.
According to paragraph 1,
A camera actuator wherein the upper stopper and the lower stopper extend inward.
According to paragraph 1,
It further includes a tilting guide portion disposed between the housing and the mover,
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 arranged symmetrically 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 of the mover,
The third coil is a camera actuator disposed on the bottom of the housing.

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