Camera actuator and camera module including same

Abstract

An embodiment of the present invention discloses a camera actuator including: a housing; a mover having an optical element attached thereto and disposed within the housing; a ball portion including a first ball and a second ball disposed between the housing and the mover; and a drive portion disposed within the housing for driving the mover; wherein the mover includes a first protrusion including a recess extending toward the housing; and the recess includes a side surface to which the ball portion is attached, at least a portion of which is spaced apart from the ball portion, and a bottom surface in contact with the side surface.

Description

[Technical field]

[0001] The present invention relates to a camera actuator and a camera module including the same. [Background technology]

[0002] A camera is a device that takes pictures or videos of a subject and is installed in portable devices, drones, vehicles, etc. To improve image quality, a camera module can have an image stabilization (IS) function that corrects or prevents image shaking caused by the user's movement, an auto focusing (AF) function that automatically adjusts the distance between the image sensor and the lens to align the focal length of the lens, and a zooming function that increases or decreases the magnification of a distant subject through a zoom lens.

[0003] On the other hand, the higher the pixel count of an image sensor, the higher the resolution and the smaller the pixel size, but the smaller the pixel, the less light it receives over the same period of time. Therefore, the higher the pixel count of a camera, the more pronounced the image blur caused by camera shake that occurs when the shutter speed is slow in a dark environment. One of the most well-known image stabilization (IS) technologies is optical image stabilizer (OIS), which corrects movement by changing the path of light.

[0004] According to a general OIS technology, the movement of the camera is detected through a gyrosensor, etc., and the lens is tilted or moved based on the detected movement, or the camera module including the lens and the image sensor is tilted or moved. When the lens or the camera module including the lens and the image sensor is tilted or moved for the OIS, additional space for the tilting or movement needs to be secured around the lens or the camera module.

[0005] Meanwhile, the actuator for the OIS may be disposed around the lens, and may include an actuator for tilting two axes perpendicular to the optical axis Z, i.e., an actuator for tilting the X-axis and an actuator for tilting the Y-axis.

[0006] However, due to the need for ultra-slim and ultra-compact camera modules, there are significant spatial constraints for arranging an actuator for the OIS, and the lens or the camera module itself including the lens and image sensor may not have sufficient space to tilt or move for the OIS. Also, the higher the pixel count of the camera, the larger the lens size is preferred to increase the amount of light received, but there may be a limit to how large the lens size can be due to the space occupied by the actuator for the OIS.

[0007] Furthermore, when the zooming function, AF function, and 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 arranged close to each other, causing magnetic field interference. Summary of the Invention [Problem to be solved by the invention]

[0008] The technical problem that the present invention aims to solve is to provide a camera actuator that is applicable to ultra-slim, ultra-compact and high-resolution cameras.

[0009] The problem to be solved by the present invention is to provide a prism drive device or camera actuator that can reduce the size of the product.

[0010] In addition, by disposing the shake correction unit, the present invention can eliminate the lens size restriction in the lens assembly of the optical system when implementing the OIS, thereby ensuring a sufficient amount of light. [Means for solving the problem]

[0011] A camera actuator according to an embodiment of the present invention includes a housing; a mover having an optical member attached thereto and disposed within the housing; a ball portion including a first ball and a second ball disposed between the housing and the mover; and a drive portion disposed within the housing for driving the mover; the mover includes a first protrusion portion including a recess extending toward the housing; the recess includes a side surface to which the ball portion is attached, at least a portion of the recess being spaced apart from the ball portion, and a bottom surface in contact with the side surface.

[0012] The driving unit can rotate the mover based on a first direction or a second direction perpendicular to the first direction.

[0013] The mover may include an outer surface of a first mover, an outer surface of a second mover opposite to the outer surface of the first mover, and an outer surface of a third mover disposed between the outer surface of the first mover and the outer surface of the second mover, and the first protrusion may include a 1-1 protrusion disposed on the outer surface of the first mover, a 1-2 protrusion disposed on the outer surface of the second mover, and a 1-3 protrusion disposed on the outer surface of the third mover.

[0014] The recesses may include a first recess located at the 1-1 protrusion, a second recess located at the 1-2 protrusion, and a third recess located at the 1-3 protrusion.

[0015] The first balls may include a 1-1 ball disposed in the first recess and a 1-2 ball disposed in the second recess, and the second ball may be disposed in the third recess.

[0016] The 1-1 ball may contact a bottom surface of the first recess at a first point, and the 1-2 ball may contact a bottom surface of the second recess at a second point.

[0017] The first point and the second point may overlap in the second direction.

[0018] The 1-1 protrusion and the 1-2 protrusion may be arranged to overlap each other in the second direction.

[0019] The 1-3 protrusion may be disposed between the 1-1 protrusion and the 1-2 protrusion.

[0020] The driving unit may include a driving magnet and a driving coil, the driving magnet may include a first magnet, a second magnet, and a third magnet, the driving coil may include a first coil, a second coil, and a third coil, the first magnet and the second magnet may be arranged symmetrically around the first direction on the mover, the first coil and the second coil may be arranged symmetrically around the first direction between the housing and the mover, the third magnet may be arranged between the first magnet and the second magnet, and the third coil may be arranged between the first coil and the second coil.

[0021] A camera actuator according to another embodiment of the present invention includes a lens member, a shaper member disposed on the lens member and reversibly deforming a shape of the lens member, a prism unit disposed on the shaper member, a housing rotatably connected to the prism unit, and a drive unit configured to tilt the shaper member about a first axis and tilt the prism unit about a second axis perpendicular to the first axis, the drive unit including a magnet drive unit and a coil drive unit, the magnet drive unit including a first magnet drive unit, a second magnet drive unit and a third magnet drive unit, the coil drive unit including a first coil drive unit, a second coil drive unit and a third coil drive unit, the first magnet drive unit and the second magnet drive unit are disposed symmetrically about the first axis on the shaper member, the third magnet drive unit is disposed on the prism unit, and the first coil drive unit, the second coil drive unit and the third coil drive unit are disposed facing the first magnet drive unit, the second magnet drive unit and the third magnet drive unit, respectively.

[0022] The shaper member may include a shaper body having a hole through which light can pass, and a first protrusion and a second protrusion extending from both sides of the shaper body, the lens member may be disposed below the shaper body, and the first magnet driving part and the second magnet driving part may be disposed on the first protrusion and the second protrusion, respectively.

[0023] The circuit board may further include a first surface, a second surface arranged to face the first surface, a third surface arranged between the first surface and the second surface to connect the first surface and the second surface, and a fourth surface extending at an angle from the third surface, wherein the first coil driving unit is arranged on the first surface, the second coil driving unit is arranged on the second surface, and the third coil driving unit is arranged on the fourth surface.

[0024] The fourth surface and the third coil drive portion may be disposed between the prism unit and the housing.

[0025] The housing includes a cover and a base fixed to the cover, and the base can be disposed between the cover and the fourth surface of the circuit board to support the fourth surface.

[0026] A rotation guide may protrude from the prism unit in the second axis direction, and the rotation guide may be rotatably coupled within a groove formed in the base.

[0027] A rotation guide may protrude from the base in the second axis direction, and the rotation guide may be rotatably coupled within a groove formed in the prism unit.

[0028] A sensing magnet may be further disposed on the prism unit adjacent to the third magnet driving part, and a Hall sensor may be further disposed on the fourth surface of the circuit board facing the sensing magnet.

[0029] At least one Hall sensor may be further disposed on at least one of the first and second surfaces of the circuit board so as to be surrounded by at least one of the first coil driving portion and the second coil driving portion.

[0030] The prism unit can be tilted within a range of 4° about the second axis.

[0031] According to an embodiment of the present invention, there is provided a camera module including a first actuator for performing at least one of zooming and autofocusing, and a second actuator for performing shake correction, the second actuator including a lens member, a shaper member disposed on the lens member for reversibly changing a shape of the lens member, a prism unit disposed on the shaper member, a housing rotatably connected to the prism unit, and a driving unit for tilting the shaper member about a first axis and tilting the prism unit about a second axis perpendicular to the first axis, the driving unit being a magnet drive. The shaper member may include a magnet driving unit and a coil driving unit, the magnet driving unit including a first magnet driving unit, a second magnet driving unit and a third magnet driving unit, the coil driving unit including a first coil driving unit, a second coil driving unit and a third coil driving unit, the first magnet driving unit and the second magnet driving unit are arranged symmetrically around the first axis on the shaper member, the third magnet driving unit is arranged on the prism unit, and the first coil driving unit, the second coil driving unit and the third coil driving unit are arranged to face the first magnet driving unit, the second magnet driving unit and the third magnet driving unit, respectively.

[0032] According to yet another embodiment to achieve the above object, a camera actuator according to one aspect includes a housing; a prism mover disposed in the housing; a prism disposed on the prism mover; a first drive unit disposed on the prism mover; a second drive unit disposed on the housing and facing the first drive unit; and a guide unit disposed between the housing and the prism mover to guide tilting of the prism mover, the guide unit including a coupling unit coupled to the prism mover and a spherical portion extending from the coupling unit, and the housing includes a first groove in which the spherical portion is disposed.

[0033] Also, the cross-sectional size of the bulbous portion may be larger than the cross-sectional size of the coupling portion.

[0034] Also, the first groove of the housing may be larger than the spherical portion.

[0035] The guide portion may include a protrusion protruding outward from the spherical portion.

[0036] Also, the protrusion may be formed in the shape of a part of a groove.

[0037] The protrusion may include a plurality of protrusions spaced apart from each other.

[0038] Additionally, the first groove of the housing may include a curved surface.

[0039] The first groove may include a first region having a first diameter, and a second region having a diameter smaller than the first diameter in the first region closer to the prism mover.

[0040] The first groove may further include a third region having a diameter smaller than the first diameter in the first region away from the prism mover.

[0041] Also, the cross section of the coupling portion may be formed in a rectangular shape.

[0042] Also, the coupling portion may be integrally formed with the prism mover.

[0043] The prism mover may also include a second groove in which the coupling portion is disposed.

[0044] In addition, the prism mover may include a first side, a second side facing the first side, an inclined portion connecting the first side and the second side and having a predetermined inclination, and a support portion extending downward from the inclined surface, and the second groove may be formed on a surface of the support portion facing the housing.

[0045] In addition, the first driving unit may include first and second magnet units arranged on a first side of the prism mover, and third and fourth magnet units arranged on a second side of the prism mover opposite the first side, and the second driving unit may include first and second coil units arranged on a first side wall of the housing, and third and fourth coil units arranged on a second side wall opposite the first side wall of the housing.

[0046] In addition, the length of the first and third magnet units in a first direction may be longer than the length of the second and fourth magnet units in the first direction, and the length of the first and third magnet units in a second direction perpendicular to the first direction may be shorter than the length of the second and fourth magnet units in the second direction.

[0047] In addition, the length of the first and third coil units in the first direction may be shorter than the length of the second and fourth coil units in the first direction, and the length of the first and third coil units in the second direction may be longer than the length of the second and fourth coil units.

[0048] The actuator may also include a yoke disposed between the first actuator and the prism mover.

[0049] The housing may further include a substrate disposed therein, the second actuator being electrically connected to the substrate. Effect of the Invention

[0050] According to an embodiment of the present invention, it is possible to provide a camera actuator applicable to ultra-slim, ultra-compact and high-resolution cameras, and in particular, it is possible to efficiently arrange an actuator for an OIS without increasing the overall size of a camera module.

[0051] 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, so that tilting in the X-axis direction and tilting in the Y-axis direction can be implemented with a stable structure, and since there is no magnetic field interference with the AF or zooming actuators, a precise OIS function can be implemented.

[0052] According to the embodiment of the present invention, it is possible to secure a sufficient amount of light by eliminating the lens size limitation, and to realize an OIS with low power consumption. [Brief description of the drawings]

[0053] [Figure 1] FIG. 1 is a perspective view of a camera module according to an embodiment. [Figure 2a] 2 is a perspective view of the camera shown in FIG. 1 with a shielding can removed. [Figure 2b] FIG. 2b is a plan view of the camera shown in FIG. 2a. [Figure 3a] FIG. 2b is a perspective view of the first camera module shown in FIG. 2a. [Figure 3b] 3b is a side cross-sectional view of the first camera module shown in FIG. 3a. [Figure 4a] 13 is a view illustrating a second camera actuator according to an embodiment from which a shielding can and a substrate portion have been removed. [Figure 4b]FIG. 4 is an exploded perspective view of a second camera actuator in the embodiment. [Figure 5a] FIG. 2 is a perspective view of a housing according to the embodiment. [Figure 5b] FIG. 2 is a top view of a housing according to the embodiment. [Figure 5c] FIG. 4 is a bottom view of the housing according to the embodiment. [Figure 5d] FIG. 2 is a side view of a housing according to the embodiment. [Figure 5e] FIG. 11 is another side view of the housing according to the embodiment. [Figure 5f] FIG. 4 is a perspective view of the housing as viewed from another direction. [Figure 5g] FIG. 11 is a perspective view of the housing as seen from still another direction. [Figure 6a] FIG. 2 is a perspective view of a holder and a ball portion according to the embodiment. [Figure 6b] FIG. 2 is a side view of the holder according to the embodiment. [Figure 6c] FIG. 11 is another side view of the holder according to the embodiment. [Figure 6d] FIG. 11 is yet another side view of the holder according to the embodiment. [Figure 7] FIG. 2 is an exploded perspective view illustrating a drive unit according to the embodiment. [Figure 8] 13 is a view illustrating a second camera actuator according to an embodiment from which a shielding can and a substrate portion have been removed. [Figure 9] This is a view from AA in FIG. [Figure 10] This is a view seen from BB' in FIG. [Figure 11] This is a view seen from BB' in FIG. [Figure 12a] 11 is a diagram illustrating one-axis tilt of a second camera actuator in the embodiment. [Figure 12b] 11 is a diagram illustrating one-axis tilt of a second camera actuator in the embodiment. [Figure 13a] 11 is a diagram illustrating two-axis tilt of a second camera actuator in the embodiment. [Figure 13b]11 is a diagram illustrating two-axis tilt of a second camera actuator in the embodiment. [Figure 14] 4 is a flowchart showing a shake correction method for a camera device according to an embodiment of the present invention. [Figure 15] FIG. 11 is a perspective view of a second actuator according to another embodiment of the present invention. [Figure 16] FIG. 16 is an exploded perspective view of the second actuator according to FIG. [Figure 17] 16 is a cross-sectional view of the second actuator of FIG. 15 in a first direction. FIG. [Figure 18] 16 is a cross-sectional view of the second actuator of FIG. 15 in a second direction. FIG. [Figure 19] 16 shows the circuit board and coil driver of the second actuator according to FIG. 15. [Figure 20a] 16 shows a part of the shake correction unit and the magnet drive of the second actuator according to FIG. 15. [Figure 20b] 16 shows a part of the shake correction unit and the magnet drive of the second actuator according to FIG. 15. [Figure 21a] 16 shows the prism unit and the remaining part of the magnet drive section of the second actuator according to FIG. 15. [Figure 21b] 16 shows the prism unit and the remaining part of the magnet drive section of the second actuator according to FIG. 15. [Figure 21c] 16 shows the prism unit and the remaining part of the magnet drive section of the second actuator according to FIG. 15. [Figure 22a] 16 shows a housing of the second actuator according to FIG. 15. [Figure 22b] 16 shows a housing of the second actuator according to FIG. 15. [Figure 23a] 16 shows the tilting of the prism unit included in the second actuator according to FIG. 15. [Figure 23b] 16 shows the tilting of the prism unit included in the second actuator according to FIG. 15. [Figure 24]FIG. 13 is a perspective view of a second camera actuator according to still another embodiment of the present invention. [Diagram 25] FIG. 13 is an exploded perspective view of a second camera actuator according to still another embodiment of the present invention. [Figure 26] FIG. 13 is a plan view of a second camera actuator according to still another embodiment of the present invention. [Figure 27] 27 is a cross-sectional view taken along the line CC' of FIG. 26. [Figure 28] FIG. 25 is a perspective view of a portion of the configuration of FIG. 24. [Figure 29] FIG. 29 is a perspective view of a portion of the configuration of FIG. 28. [Diagram 30] FIG. 29 is a perspective view of a portion of the configuration of FIG. 28. [Diagram 31] FIG. 13 is a perspective view of a guide portion of a second camera actuator in accordance with yet another embodiment of the present invention. [Diagram 32] FIG. 11 is a perspective view of an actuator for AF or Zoom according to another embodiment of the present invention. [Diagram 33] FIG. 33 is a perspective view of the actuator according to the embodiment shown in FIG. 32 with some components omitted. [Diagram 34] FIG. 33 is an exploded perspective view of the actuator according to the embodiment shown in FIG. 32 with some components omitted. [Figure 35a] FIG. 35 is a perspective view of a first lens assembly in the actuator according to the embodiment shown in FIG. 34. [Figure 35b] FIG. 35b is a perspective view of the first lens assembly shown in FIG. 35a with some components removed. [Diagram 36] FIG. 35 is a perspective view of a third lens assembly in the actuator according to the embodiment shown in FIG. 34. [Figure 37] 1 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied; [Figure 38] 1 is a perspective view of a vehicle to which a camera module according to an embodiment is applied; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0054] The present invention can be modified in various ways and can have various embodiments, and a specific embodiment will be described with reference to the drawings. However, this is not intended to limit the present invention to the specific embodiment, and it should be understood that the present invention includes all modifications, equivalents, and alternatives within the spirit and technical scope of the present invention.

[0055] Terms including ordinal numbers such as second, first, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another. For example, a second component may be named a first component, and similarly, a first component may be named a second component, without departing from the scope of the invention. The term and / or includes a combination of multiple related listed items or any item among multiple related listed items.

[0056] When a component is said to be "coupled" or "connected" to another component, it should be understood that it may be directly coupled or connected to the other component, but there may be other components in between. Conversely, when a component is said to be "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0057] The terms used in this application are merely used to describe certain embodiments and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, terms such as "include" or "have" are intended to specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood not to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0058] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted to have a meaning consistent with the meaning they have in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0059] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals, the same or corresponding elements will be given the same reference numerals, and redundant description thereof will be omitted.

[0060] FIG. 1 is a perspective view of a camera module according to an embodiment, FIG. 2A is a perspective view of the camera module shown in FIG. 1 with a shielding can removed, and FIG. 2B is a plan view of the camera module shown in FIG. 2A.

[0061] 1, the camera module 1000 may include a single or multiple camera modules. For example, the camera module 1000 may include a first camera module 1000A and a second camera module 1000B. The first camera module 1000A and the second camera module 1000B may be covered by a predetermined shielding can 1210.

[0062] 1, 2a and 2b, the first camera module 1000A may include a single or multiple actuators. For example, the first camera module 1000A may include a first camera actuator 1100 and a second camera actuator 1200. In the following, the camera actuator may be used interchangeably with "actuator" and the like.

[0063] The first camera actuator 1100 may be electrically coupled to a first group of circuit boards 1410, and the second camera actuator 1200 may be electrically coupled to a second group of circuit boards 1420, which may be electrically coupled to the first group of circuit boards 1410, although not shown. The second camera module 1000B may be electrically coupled to a third group of circuit boards 1430.

[0064] The first camera actuator 1100 may be a zoom actuator or an auto focus (AF) actuator. For example, the first camera actuator 1100 may support one or more lenses and perform an auto focus function or a zoom function by moving the lenses in response to a control signal from a predetermined controller.

[0065] The second camera actuator 1200 may be an OIS (Optical Image Stabilizer) actuator.

[0066] The second camera module 1000B may include fixed focal length lenses disposed in a lens barrel (not shown). The fixed focal length lenses may also be referred to as "single focal length lenses" or "single lenses."

[0067] The second camera module 1000B is disposed in a housing (not shown) and may include an actuator (not shown) for driving a lens unit. The actuator may be a voice coil motor, a micro actuator, a silicon actuator, etc., and may be applied in various ways such as an electrostatic type, a thermal type, a bimorph type, an electrostatic force type, etc., but is not limited thereto.

[0068] Next, FIG. 3a is a perspective view of the first camera module illustrated in FIG. 2a, and FIG. 3b is a side cross-sectional view of the first camera module illustrated in FIG. 3a.

[0069] Referring to FIG. 3a, the first camera module 1000A may include a first camera actuator 1100 performing a zooming function and an AF function, and a second camera actuator 1200 arranged on one side of the first camera actuator 1100 and performing an OIS function.

[0070] 3b, the first camera actuator 1100 may include an optical system and a lens driver. For example, the first camera actuator 1100 may include at least one of a first lens assembly 1110, a second lens assembly 1120, a third lens assembly 1130, and a guide pin 50.

[0071] Also, the first camera actuator 1100 includes a driving coil 1140 and a driving magnet 1160, and is capable of performing a high magnification zooming function.

[0072] For example, the first lens assembly 1110 and the second lens assembly 1120 may be moving lenses that move through the driving coil 1140, the driving magnet 1160, and the guide pin 50, and the third lens assembly 1130 may be a fixed lens, but is not limited thereto. For example, the third lens assembly 1130 may function as a condenser that focuses light at a specific position, and the first lens assembly 1110 may function as a variator that refocuses an image focused by the third lens assembly 1130, which is a condenser, at another position. Meanwhile, the first lens assembly 1110 may be in a state where the distance to the subject or the image distance changes significantly, and the first lens assembly 1110, which is a variator, may play an important role in changing the focal length or magnification of the optical system. Meanwhile, the image point focused by the first lens assembly 1110, which is a variator, may have slight differences depending on the position. Therefore, the second lens assembly 1120 can perform a position compensation function for the image formed by the variable magnification element. For example, the second lens assembly 1120 can perform a compensator function that accurately images the image point formed by the first lens assembly 1110, which is a variable magnification element, at the actual position of the image sensor 1190.

[0073] For example, the first lens assembly 1110 and the second lens assembly 1120 can be driven by an electromagnetic force generated by the interaction between a drive coil 1140 and a drive magnet 1160 .

[0074] A given image sensor 1190 can be disposed perpendicular to the optical axis direction of the collimated light.

[0075] Next, the second camera actuator 1200 will be described in detail below in various embodiments.

[0076] In addition, the camera module according to the embodiment can implement OIS by controlling the optical path through the camera actuator, thereby minimizing the occurrence of decentering and tilt phenomena and achieving the best optical characteristics.

[0077] 1 to 3 and the associated description are intended to explain the overall structure and operating principles of a camera module according to an embodiment of the present invention, and therefore the embodiment of the present invention is not limited to the detailed configurations illustrated in FIG. 1 to FIG. 3.

[0078] Meanwhile, when an actuator for OIS and an actuator for AF or Zoom are arranged according to an embodiment of the present invention, magnetic field interference with a magnet for AF or Zoom during driving of the OIS can be prevented. Since the driving magnet of the second camera actuator 1200 is arranged separately from the first camera actuator 1100, magnetic field interference between the first camera actuator 1100 and the second camera actuator 1200 can be prevented. In this specification, OIS can be used interchangeably with terms such as image stabilization, optical image stabilization, optical image correction, and shake correction.

[0079] Hereinafter, a control method and a detailed structure of the second camera actuator according to an embodiment of the present invention will be described in more detail with reference to various examples.

[0080] FIG. 4a is a view illustrating a second camera actuator according to an embodiment in which the shielding can and the substrate portion are removed.

[0081] 4a and 4b, the second camera actuator 1200 according to the embodiment includes a shield can 1210, a housing 1220, a mover 1230, a ball portion 1240, and a drive portion 1250.

[0082] The shielding can 1210 may be located at the outermost side of the second camera actuator 1200 and may surround the driving unit 1250 .

[0083] In addition, the shielding can 1210 can block or reduce electromagnetic waves generated from the outside, thereby preventing malfunctions in the driving unit 1250 and the like.

[0084] The housing 1220 may be positioned inside the shield can 1210. Also, the housing 1220 may be positioned inside a substrate portion 1254, which will be described later. The housing 1220 and the shield can 1210 may be fastened by being inserted or mated with each other.

[0085] The housing 1220 may include a first housing side portion, a second housing side portion, and a third housing side portion. The first housing side portion and the second housing side portion may be disposed to face each other. And, the third housing side portion may be disposed between the first housing side portion and the second housing side portion. The first housing side portion to the third housing side portion may be disposed to surround the mover. Thus, it is possible to minimize the impact applied to the mover. A detailed description of this will be given later.

[0086] Here, the first direction is the X-axis direction in the drawing, and may be mixed with the second axis direction, etc. The second direction may be the Y-axis direction in the drawing. Also, the Y-axis will be described below as the first axis, and the X-axis as the second axis. And the second direction is a direction perpendicular to the first direction. Also, the third direction is the Z-axis direction in the drawing, and may be mixed with the third axis. The third direction is a direction perpendicular to both the first and second directions. Also, 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 may be tilted by the second camera actuator.

[0087] The mover 1230 includes a holder 1231 and an optical member 1232 attached to the holder 1231 .

[0088] The holder 1231 may be mounted in a receiving portion of the housing 1220 together with the optical member 1232. The holder 1231 may include a first holder outer surface to a third holder outer surface corresponding to the first housing side portion to the third housing side portion, respectively.

[0089] The holder 1231 may include first protrusions protruding from the first to third holder outer surfaces toward the housing 1220. The first protrusions may include recesses, and the ball parts 1240 may be disposed in the recesses. This will be described in detail later.

[0090] Also, the optical member 1232 may be mounted in the holder 1231. To this end, the holder 1231 may have a mounting surface, which may be formed by a receiving groove.

[0091] Also, the optical member 1232 may include a reflecting portion (e.g., a mirror, a prism) disposed therein. However, the present invention is not limited thereto. The optical member 1232 may reflect light reflected from the outside (e.g., an object) to the inside of the camera module. In other words, the optical member 1232 may change the path of the reflected light to improve the spatial limitations of the first camera actuator and the second camera actuator. It should be understood that the camera module may thus provide a high range of magnification by expanding the light path while minimizing the thickness.

[0092] Further, the optical member 1232 may be an optical element or an optical module. Accordingly, it should be understood that the optical member 1232 may be a mirror, a lens, a prism, or the like.

[0093] The ball unit 1240 may include a first ball B1 and a second ball B2. The mover 1230 (or the holder 1231) may perform a second axis tilt or an X axis tilt based on the first ball B1. The mover 1230 (or the holder 1231) may perform a first axis tilt or a Y axis tilt based on the second ball B2.

[0094] The first ball B1 and the second ball B2 can be arranged between the first housing side portion and the third housing side portion and the first holder outer surface and the third holder outer surface. For example, the 1-1 ball B1a can be arranged between the first holder outer surface and the first housing side portion and can be pressed by the first holder outer surface or the first housing side portion. The 1-2 ball B1b can be arranged between the second holder outer surface and the second housing side portion and can be pressed by the second holder outer surface or the second housing side portion. The second ball B2 can be arranged between the third housing side portion and the third holder outer surface and can be pressed by the third housing side portion and the third holder outer surface. With this configuration, the housing 1220 and the holder 1231 can be coupled through the first ball B1 and the second ball B2.

[0095] Also, in this specification, a lubricant may be applied to the recesses and grooves in which the first ball B1 and the second ball B2 are mounted. That is, it should be understood that the lubricant is located between the first ball B1 and the second ball B2 and the recesses or grooves, so that the first axis tilt and the second axis tilt can be easily performed.

[0096] The driving unit 1250 includes a driving magnet 1251 , a driving coil 1252 , a Hall sensor unit 1253 and a substrate unit 1254 .

[0097] The driving magnet 1251 may include a plurality of magnets. In an embodiment, the driving magnet 1251 may include a first magnet 1251a, a second magnet 1251b, and a third magnet 1251c.

[0098] The first magnet 1251a, the second magnet 1251b, and the third magnet 1251c may be positioned on the outer surface of the holder 1231. The first magnet 1251a and the second magnet 1251b may be positioned to face each other.

[0099] Also, the third magnet 1251c may be located on the outer surface of the third holder among the outer surfaces of the holder 1231. The third magnet 1251c may be one or more, which will be described in detail later.

[0100] The drive coil 1252 may include multiple coils. In some embodiments, the drive coil 1252 may include a first coil 1252a, a second coil 1252b, and a third coil 1252c.

[0101] The first coil 1252a can face the first magnet 1251a. Therefore, the first coil 1252a can be located on the first housing side portion 1221 as described above.

[0102] In addition, the second coil 1252b can face the second magnet 1251b. Therefore, the second coil 1252b can be located in the second housing side portion 1222 as described above.

[0103] The first coil 1252a may be positioned to face the second coil 1252b. That is, the first coil 1252a may be positioned symmetrically with the second coil 1252b based on the first direction (X-axis direction). This can be applied to the first magnet 1251a and the second magnet 1251b in the same manner. That is, the first magnet 1251a and the second magnet 1251b may be positioned symmetrically with respect to the first direction (X-axis direction).

[0104] Also, the first coil 1252a, the second coil 1252b, the first magnet 1251a and the second magnet 1251b may be arranged to overlap at least partially in the second direction (Y-axis direction). With this configuration, X-axis tilting may be accurately performed without tilting to one side by the electromagnetic force between the first coil 1252a and the first magnet 1251a and the electromagnetic force between the second coil 1252b and the second magnet 1251b.

[0105] The first coil 1252a and the second coil 1252b may be coupled to the substrate unit 1254. In this embodiment, the first coil 1252a and the second coil 1252b may be electrically connected to the substrate unit 1254 so that a current may flow therethrough. This current is an element of electromagnetic force that allows the second camera actuator to tilt based on the X-axis. The substrate unit 1254 may surround a side of the housing 1220 and be coupled to the housing 1220 through a hole or the like.

[0106] The third coil 1252c can face the third magnet 1251c. Therefore, the third coil 1252c can be located on the third housing side portion 1223 as described above.

[0107] In the embodiment, the third coil 1252c may be coupled to the substrate 1254. The third coil 1252c may be electrically connected to the substrate 1254 so that a current may flow through the third coil 1252c. This current is an element of electromagnetic force that allows the second camera actuator to tilt around the Y axis. That is, the third coil 1252c generates an electromagnetic force together with the third magnet 1251c to perform Y-axis tilting of the mover 1230. Here, X-axis tilting refers to tilting around the X axis, and Y-axis tilting refers to tilting around the Y axis.

[0108] Also, the third coil 1252c may be a plurality of third magnets 1251c, which will be described in detail later.

[0109] The hall sensor unit 1253 may include a plurality of hall sensors. In an embodiment, the hall sensor unit 1253 may include a first hall sensor 1253a and a second hall sensor 1253b. The first hall sensor 1253a may be located inside the first coil 1252a or the second coil 1252b. The first hall sensor 1253a may detect a change in magnetic flux inside the first coil 1252a or the second coil 1252b. Thus, position sensing between the first and second magnets 1251a and 1251b and the first hall sensor 1253a may be performed. The second camera actuator according to the embodiment may control the X-axis tilt through this.

[0110] Also, the second Hall sensor 1253b may be located inside the third coil 1253c. The second Hall sensor 1253b may detect a change in magnetic flux inside the third coil 1253c. Thus, position sensing between the third magnet 1251c and the second Hall sensor 1253b may be performed. The second camera actuator according to the embodiment may control the Y-axis tilt through this.

[0111] The substrate part 1254 may contact the first housing side part to the third housing part. The substrate part 1254 may be electrically connected to the driving coil 1252 and the Hall sensor part 1253. For example, the substrate part 1254 may be connected to the driving coil 1252 and the Hall sensor part 1253 by soldering or SMT. However, the present invention is not limited to such a method.

[0112] The substrate unit 1254 is located between the shielding can 1210 and the housing 1220, and can be coupled to the shielding can 1201 and the housing 1220. As described above, various coupling methods can be used. Through the coupling, the driving coil 1252 and the Hall sensor unit 1253 can be positioned within the outer surface of the housing 1220.

[0113] The substrate unit 1254 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), a rigid flexible printed circuit board (RigidFlexible PCB), etc. However, the substrate unit 1254 is not limited to these types.

[0114] 5a is a perspective view of a housing according to an embodiment, FIG. 5b is a top view of the housing according to the embodiment, FIG. 5c is a bottom view of the housing according to the embodiment, FIG. 5d is one side view of the housing according to the embodiment, FIG. 5e is another side view of the housing according to the embodiment, FIG. 5f is a perspective view of the housing from another direction, and FIG. 5g is a perspective view of the housing from yet another direction.

[0115] 5a to 5g, as described above, the housing 1220 according to the embodiment may include a first housing side 1221, a second housing side 1222, and a third housing side 1223. Each housing side of the housing 1220 may include a housing hole and a second protrusion.

[0116] In the embodiment, the first housing side portion 1221 may include a first housing hole 1221a. A first coil, which will be described later, may be positioned in the first housing hole 1221a. The substrate portion may be electrically connected to the first coil through the first housing hole 1221a.

[0117] In addition, the first housing side portion 1221 may include a 2-1 protrusion 1221b protruding from an inner surface toward the mover. The 2-1 protrusion 1221b may include a first groove BG1, and the 1-1 ball may be mounted in the first groove BG1.

[0118] In addition, the second housing side portion 1222 may include a second housing hole 1222a in which a second coil, which will be described later, may be located.

[0119] In addition, the second housing side portion 1222 may include a 2-2 protrusion 1222b protruding from an inner surface toward the mover. The 2-2 protrusion 1222b may include a second groove BG2, and the 1-2 ball may be mounted in the second groove BG2.

[0120] In addition, the third housing side portion 1223 may include a third housing hole 1223a, in which a third coil, which will be described later, may be located.

[0121] Also, the third housing hole 1223a may be a plurality of holes. The third housing hole 1223a may include a 3-1 housing hole 1223a1 and a 3-2 housing hole 1223a2. The 3-1 housing hole 1223a1 and the 3-2 housing hole 1223a2 may be arranged symmetrically based on the first direction (X-axis direction). The 3-1 coil and the 3-2 coil may be arranged in the 3-1 housing hole 1223a1 and the 3-2 housing hole 1223a2, respectively. When a current is injected into the 3-1 coil and the 3-2 coil, the Y-axis tilt may be accurately performed without tilting to one side.

[0122] In addition, the third housing side portion 1223 may include a second-third protrusion 1223b protruding from an inner surface toward the mover. The second-third protrusion 1223b may include a third groove BG3, and a second ball may be mounted in the third groove BG3.

[0123] The 2-1 protrusion 1221b may overlap the 2-2 protrusion 1222b in the second direction (Y-axis direction). The first groove BG1 and the second groove BG2 may overlap in the second direction (Y-axis direction). Accordingly, the first housing side 1221 and the second housing side 1222 may pressurize the 1-1 ball and the 1-2 ball to be coupled to the mover in contact with the 1-1 ball and the 1-2 ball. As a result, the second actuator according to the embodiment can easily prevent a decrease in reliability due to an uneven weighting of the applied force since the force applied to the mover or the housing 1220 does not shift in the second axis direction when the mover and the housing 1220 are coupled. In addition, the 1-1 ball and the 1-2 ball are arranged in line in the second direction (Y-axis direction), and the mover can perform an accurate X-axis tilt by the current applied to the first coil and the second coil.

[0124] The 2-1 protrusion 1221b may be spaced apart from the first housing hole 1221a. And, the 2-1 protrusion 1221b may be located between the first housing hole 1221a and the third housing hole 1223a. And, the 2-2 protrusion 1222b may be spaced apart from the second housing hole 1222a. And, the 2-2 protrusion 1222b may be located between the second housing hole 1222a and the third housing hole 1223a. Thus, X-axis tilt may be easily performed.

[0125] The 2-1 protrusion 1221b may include a 1-1 sidewall K1, a 1-2 sidewall K2, and a 1-3 sidewall K3. The 1-1 sidewall K1, the 1-2 sidewall K2, and the 1-3 sidewall K3 may be located on the inner surface of the first housing side 1221.

[0126] The 1-1 side wall K1 is located at the upper portion and may extend in the third direction (Z-axis direction). The 1-2 side wall K2 may have one end in contact with the 1-1 side wall K1 and the other end in contact with the 1-3 side wall K3. The 1-2 side wall K2 may extend in the first direction (X-axis direction). The 1-3 side wall K3 may have one end in contact with the 1-2 side wall K2. The 1-3 side wall K3 may extend in the third direction (Z-axis direction).

[0127] The 1-1 sidewall K1 may be located on the top of the 1-3 sidewall K3, and the 1-2 sidewall K2 may be located between the 1-1 sidewall K1 and the 1-3 sidewall K3.

[0128] Also, the first groove BG1 may have a shape with one side open by the 1-1 sidewall K1, the 1-2 sidewall K2, and the 1-3 sidewall K3. That is, the first groove BG1 may open toward the first housing hole 1221a (or the first coil). As a result, a sufficient space for disposing the first coil may be secured.

[0129] In addition, the first groove BG1 has an open area through which a 1-1 ball (to be described later) can be easily inserted into the first groove BG1, thereby improving ease of assembly.

[0130] The 1-2 side wall K2 can be a stopper for the 1-1 ball, so that the 1-1 ball can be mounted at a desired position in the 1-1 groove BG1.

[0131] The 2-2 protrusion 1222b may include a 2-1 sidewall L1, a 2-2 sidewall L2, and a 2-3 sidewall L3. The 2-1 sidewall L1, the 2-2 sidewall L2, and the 2-3 sidewall L3 may be located on the inner surface of the second housing side 1222.

[0132] The 2-1 sidewall L1 is located at the top and may extend in the third direction (Z-axis direction). The 2-2 sidewall L2 may have one end in contact with the 2-1 sidewall L1 and the other end in contact with the 2-3 sidewall L3. The 2-2 sidewall L2 may extend in the first direction (X-axis direction). The 2-3 sidewall L3 may have one end in contact with the 2-2 sidewall L2. The 2-3 sidewall L3 may extend in the third direction (Z-axis direction).

[0133] The 2-1 sidewall L1 may be located on the top of the 2-3 sidewall L3, and the 2-2 sidewall L2 may be located between the 2-1 sidewall L1 and the 2-3 sidewall L3.

[0134] Also, the second groove BG2 may have a shape with one side open by the 2-1 sidewall L1, the 2-2 sidewall L2, and the 2-3 sidewall L3. That is, the second groove BG2 may open toward the second housing hole 1222a (or the second coil). As a result, a sufficient space for disposing the second coil may be secured.

[0135] In addition, the second groove BG2 has an open area through which a first and second ball (described later) can be easily inserted into the second groove BG2, thereby improving ease of assembly.

[0136] The second-second side wall L2 can be a stopper for the first-second ball, so that the first-second ball can be placed in a desired position in the second groove BG2.

[0137] The 1-1 sidewall K1, the 1-2 sidewall K2, and the 1-3 sidewall K3 may be arranged symmetrically in the third direction with the 2-1 sidewall L1, the 2-2 sidewall L2, and the 2-3 sidewall L3, respectively. That is, the 1-1 sidewall K1, the 1-2 sidewall K2, and the 1-3 sidewall K3 may overlap the 2-1 sidewall L1, the 2-2 sidewall L2, and the 2-3 sidewall L3, respectively, in the second direction (Y-axis direction). For example, the 1-2 sidewall K2 and the 2-2 sidewall L2 may be arranged at the same position in the second direction (Y-axis direction) so that the 1-1 ball and the 1-2 ball may stay at the same position in the second direction (Y-axis direction). Accordingly, the 1-1 ball and the 1-2 ball are also arranged to overlap in the second direction (Y-axis direction) as described above, improving the reliability of the element and making it easier to perform tilt.

[0138] The 2-3 protrusion 1223b may include a 3-1 sidewall M1, a 3-2 sidewall M2, and a 3-3 sidewall M3. The 3-1 sidewall M1, the 3-2 sidewall M2, and the 3-3 sidewall M3 may be located on the inner surface of the first housing side 1221.

[0139] The 3-1 side wall M1 may be located between the 3-1 housing hole 1223a1 and the 3-2 housing hole 1223a2 so as to be closer to the 3-2 housing hole 1223a2. The 3-1 side wall M1 may be extended in a first direction.

[0140] One end of the 3-2 side wall M2 may contact the 3-1 side wall M1, and the other end of the 3-2 side wall M2 may contact the 3-3 side wall M3. The 3-2 side wall M2 may extend in a second direction (Y-axis direction).

[0141] One end of the 3-3 side wall M3 may contact the 3-2 side wall M2. The 3-3 side wall M3 may be located between the 3-1 housing hole 1223a1 and the 3-2 housing hole 1223a2 so as to be closer to the 3-1 housing hole 1223a1. The 3-3 side wall M3 may extend in the first direction (X-axis direction).

[0142] The 3-2 sidewall M2 may be located below the 3-1 sidewall M1 and the 3-3 sidewall M3. The 3-2 sidewall M2 may be located between the 3-1 sidewall M1 and the 3-3 sidewall M3.

[0143] Also, the third groove BG3 may have a shape with one side open due to the 3-1 sidewall M1, the 3-2 sidewall M2, and the 3-3 sidewall M3. That is, the third groove BG3 may be open toward the upper side. Also, the third groove BG3 may allow a second ball, which will be described later, to be easily mounted on the third groove BG3 through the open area. As a result, ease of assembly may be improved.

[0144] Also, the 3-2 side wall M2 can be a stopper for the second ball, or the 3-2 side wall M2 can support the second ball, so that the second ball can be mounted at a desired position in the third groove BG3.

[0145] In addition, the housing 1220 may include a receiving portion (not shown) formed by the first housing side portion 1221 to the third housing side portion 1223. A mover may be positioned in the receiving portion (not shown).

[0146] FIG. 6a is a perspective view of the holder and ball portion according to the embodiment, FIG. 6b is one side view of the holder according to the embodiment, FIG. 6c is another side view of the holder according to the embodiment, and FIG. 6d is yet another side view of the holder according to the embodiment.

[0147] 6a to 6d, the holder 1231 according to the embodiment may include a plurality of outer sides. The holder 1231 may include a first holder outer side 1231S1, a second holder outer side 1231S2, and a third holder outer side 1231S3.

[0148] The first holder outer surface 1231S1 may be located to correspond to the first housing side portion described above. For example, the first holder outer surface 1231S1 may be located to face the first housing side portion described above.

[0149] Also, the second holder outer surface 1231S2 may be located to correspond to the second housing side portion described above. For example, the second holder outer surface 1231S2 may be located to face the second housing side portion described above.

[0150] Also, the third holder outer surface 1231S3 may be located in correspondence with the third housing side portion described above. For example, the third holder outer surface 1231S3 may be located to face the third housing side portion described above.

[0151] The third holder outer surface 1231S3 can be located between the first holder outer surface 1231S1 and the second holder outer surface 1231S2.

[0152] The holder 1231 may include first protrusions extending from each outer surface toward the housing and including recesses RS1, RS2, and RS3 in which the ball portions are mounted.

[0153] The first protrusions may be multiple and may be located on each outer surface. The recesses may also be multiple in number corresponding to the first protrusions.

[0154] First, the first protrusion may include a 1-1 protrusion PR1, a 1-2 protrusion PR2, and a 1-3 protrusion PR3.

[0155] The 1-1 protrusion PR1 may be located on the first holder outer surface 1231S1 and extend toward the first housing side. Also, the 1-1 protrusion PR1 may be located to correspond to the 2-1 protrusion on the first housing side. The 1-1 protrusion PR1 may be located to face the 2-1 protrusion, and the 1-1 ball B1a may be located between the 1-1 protrusion PR1 and the 2-1 protrusion. The 1-1 ball may be in contact with the 1-1 protrusion PR1 and the 2-1 protrusion, and may be pressed by the 1-1 protrusion PR1 and the 2-1 protrusion.

[0156] The 1-2 protrusion PR2 may be located on the second holder outer surface 1231S2 and extend toward the second housing side. The 1-2 protrusion PR2 may be located to correspond to the 2-2 protrusion of the second housing side. R 2 is positioned to face the 2-2 protrusion, and the 1-2 ball B1b can be positioned between the 1-2 protrusion PR2 and the 2-2 protrusion. The 1-2 ball contacts the 1-2 protrusion PR2 and the 2-2 protrusion and can be pressed by the 1-2 protrusion PR2 and the 2-2 protrusion. Thus, the housing and the holder 1231 can be coupled to each other.

[0157] The first-third protrusion PR3 is the outer surface 1231S of the third holder. 3 The first-third protrusion PR3 may be located on the third housing side and extend toward the third housing side. The first-third protrusion PR3 may be located to correspond to the second-third protrusion PR2 on the third housing side. R The first ball B2 may be positioned between the first protrusion PR3 and the second protrusion PR2, and may be pressed by the first protrusion PR3 and the second protrusion PR3.

[0158] In addition, the 1-1 protrusion PR1 may overlap the 1-2 protrusion PR2 in the second direction (Y-axis direction) and may be disposed symmetrically with respect to the third direction (Z-axis direction).

[0159] Also, the 1-3 protrusion PR3 may be located between the 1-1 protrusion PR1 and the 1-2 protrusion PR2.

[0160] As described above, the first protrusion has a recess, and the recess may have a bottom surface in contact with a side surface spaced apart from the ball portion.

[0161] In the embodiment, the 1-1 protrusion PR1 may include a first recess RS1, and the first recess RS1 may include a first side surface N1 and a first bottom surface N2. The first side surface N1 and the first bottom surface N2 may be inner surfaces of the 1-1 protrusion PR1.

[0162] Also, the first side N1 may have a structure extending from the first bottom surface N2 toward the side of the first housing. Also, the first side N1 may be disposed so as to surround the first bottom surface N2. The first side N1 may be an inclined surface. Therefore, the first side N1 may have a predetermined angle with respect to the first bottom surface N2.

[0163] The first bottom surface N2 may contact the 1-1 ball. At least a portion of the first side surface N1 may be separated from the 1-1 ball. Therefore, a space for the 1-1 ball B1a to perform tilting may be secured. The first side surface N1 may be driven as a stopper that limits the moving radius of the 1-1 ball during X-axis or Y-axis tilting.

[0164] The first-2 protrusion PR2 may include a second recess RS2, and the second recess RS2 may include a second side surface O1 and a second bottom surface O2. The second side surface O1 and the second bottom surface O2 may be inner surfaces of the first-2 protrusion PR2.

[0165] Also, the second side O1 may have a structure extending from the second bottom surface O2 toward the second housing side. Also, the second side O1 may be positioned so as to surround the second bottom surface O2. The second side O1 may be an inclined surface. Therefore, the second side O1 may have a predetermined angle with respect to the second bottom surface O2.

[0166] The second bottom surface O2 may contact the first-2 ball B1b. At least a portion of the second side surface O1 may be separated from the first-2 ball B1b. Therefore, a space for the first-2 ball B1b to perform tilting may be secured. The second side surface O1 may be driven as a stopper that limits the moving radius of the first-2 ball B1b during X-axis or Y-axis tilting.

[0167] The first side N1 may be disposed symmetrically with the second side O1 in the third direction (Z-axis direction). The first bottom surface N2 may be disposed symmetrically with the second bottom surface O2 in the third direction (Z-axis direction). The X-axis tilt or Y-axis tilt of the mover may have the same radius and may be accurately performed without tilting to one side. Therefore, correction for camera shake may be accurately performed.

[0168] The 1-3 protrusion PR3 may include a third recess RS3, and the third recess RS3 may include a third side surface P1 and a third bottom surface P2. The third side surface P1 and the third bottom surface P2 may be inner surfaces of the 1-3 protrusion PR3.

[0169] Also, the third side surface P1 may have a structure extending from the third bottom surface P2 toward the third housing side. Also, the third side surface P1 may be disposed so as to surround the third bottom surface P2. The third side surface P1 may be an inclined surface. Therefore, the third side surface P1 may have a predetermined angle with respect to the third bottom surface P2.

[0170] The third bottom surface P2 may contact the second ball B2. At least a portion of the third side surface P1 may be spaced apart from the second ball. The third side surface P1 may be driven as a stopper that limits the radius of movement of the second ball during X-axis or Y-axis tilting.

[0171] FIG. 7 is an exploded perspective view illustrating a drive unit according to the embodiment.

[0172] 7, as described above, the driving unit 1250 includes a driving magnet 1251, a driving coil 1252, a Hall sensor unit 1253, and a substrate unit 1254.

[0173] As described above, the driving magnet 1251 may include the first magnet 1251a, the second magnet 1251b, and the third magnet 1251c that provide a driving force by electromagnetic force. The first magnet 1251a, the second magnet 1251b, and the third magnet 1251c may be located on the outer surface of the holder 1231, respectively.

[0174] In addition, the driving coil 1252 may include a plurality of coils. In an embodiment, the driving coil 1252 may include a first coil 1252a, a second coil 1252b, and a third coil 1252c.

[0175] The first coil 1252a may be positioned to face the first magnet 1251a. Therefore, the first coil 1252a may be positioned in the first housing hole 1221a of the first housing side portion 1221 as described above.

[0176] Also, the second coil 1252b may be positioned to face the second magnet 1251b. Therefore, the second coil 1252b may be positioned in the second housing hole 1222a of the second housing side portion 1222 as described above.

[0177] The second camera actuator of this embodiment controls the rotation of the mover 1230 along the first axis (Y-axis direction) or the second axis (X-axis direction) using the electromagnetic force between the driving magnet 1251 and the driving coil 1252, thereby minimizing the occurrence of decentering and tilt phenomena when implementing the OIS and providing the best optical characteristics.

[0178] In addition, according to the embodiment, by implementing the OIS through the ball portion 1240 disposed between the housing 1220 and the mover 1230, it is possible to eliminate the size limitation of the actuator and provide an ultra-slim and ultra-compact camera actuator and a camera module including the same.

[0179] Additionally, substrate portion 1254 can include a first substrate side 1254a, a second substrate side 1254b, and a third substrate side 1254c.

[0180] The first substrate side 1254a and the second substrate side 1254b can be disposed opposite each other, and the third substrate side 1254c can be located between the first substrate side 1254a and the second substrate side 1254b.

[0181] Also, the first board side 1254a can be positioned between the first housing side and the shielding can, the second board side 1254b can be positioned between the second housing side and the shielding can, and the third board side 1254c can be positioned between the third housing side and the shielding can.

[0182] The first substrate side 1254a may be coupled and electrically connected to the first coil 1252a and the first substrate side 1254a may be coupled and electrically connected to the first Hall sensor 1253a.

[0183] The second substrate side 1254b may be coupled and electrically connected to the second coil 1252b. It should be understood that the second substrate side 1254b may also be coupled and electrically connected to the first Hall sensor.

[0184] The third substrate side portion 1254c may be coupled and electrically connected to the third coil 1252c and the second Hall sensor 1253b.

[0185] FIG. 8 is a view showing a second camera actuator for an embodiment in which the shielding can and substrate portion have been removed, FIG. 9 is a view seen from AA' in FIG. 8, FIG. 10 is a view seen from BB' in FIG. 8, and FIG. 11 is a view seen from BB' in FIG. 8.

[0186] 8 to 11, the first coil 1252a may be located on the first housing side portion 1221, and the first magnet 1251a may be located on the first holder outer surface 1231S1 of the holder 1231. Therefore, the first coil 1252a and the first magnet 1251a may face each other. The first magnet 1251a may at least partially overlap the first coil 1252a in the second direction (Y-axis direction).

[0187] Each magnet may be coupled to the outer surface of the adjacent holder through an adhesive member. That is, the adhesive member may be located between the outer surface of the adjacent holder and the magnet. For example, the first magnet 1251a may be coupled to the outer surface of the first holder 1231S1 through an adhesive member, etc.

[0188] In addition, the second coil 1252b may be located on the second housing side portion 1222, and the second magnet 1251b may be located on the second holder outer surface 1231S2. Therefore, the second coil 1252b and the second magnet 1251b may face each other. The second magnet 1251b may at least partially overlap the second coil 1252b in the second direction (Y-axis direction).

[0189] In addition, the first coil 1251a and the second coil 1252b may overlap in the second direction (Y-axis direction), and the first magnet 1251a and the second magnet 1251b may overlap in the second direction (Y-axis direction). With this configuration, the electromagnetic force applied to the outer surfaces of the holders (the outer surfaces of the first holder and the second holder) is positioned on an axis parallel to the second direction (Y-axis direction), so that X-axis tilt can be performed accurately and precisely.

[0190] Also, the third coil 1251c may be located on the third housing side portion 1223, and the third magnet 1251c may be located on the third holder outer surface 1231S3 of the holder 1231. The third coil 1251c and the third magnet 1251c may at least partially overlap in the third direction (Z-axis direction). Accordingly, the strength of the electromagnetic force between the third coil 1251c and the third magnet 1251c may be easily controlled.

[0191] The 3-1 coil 1251c1 may be located in the 3-1 housing hole 1223a1, and the 3-2 coil 1251c2 may be located in the 3-2 housing hole 1223a2. 2 The ball B2 can be located between the 3-1 coil 1251c1 and the 3-2 coil 1251c2.

[0192] In addition, a third protrusion PR3 may be disposed between the 3-1 magnet 1252c1 and the 3-2 magnet 1252c2. The 3-1 magnet 1252c1 and the 3-2 magnet 1252c2 may at least partially overlap the third protrusion PR3 in the second direction (Y-axis direction). With this configuration, the second ball B2 in the third protrusion PR3 can accurately perform Y-axis tilt without being tilted toward the 3-1 coil 1251c1 side or the 3-2 coil 1251c2 side by the electromagnetic force generated from the third coil and the third magnet.

[0193] As described above, the first coil 1251a, the second coil 1251b and the third coil 1251c may be disposed in the respective housing holes and electrically connected to the substrate, and the magnet may be coupled to the outer surface of each holder.

[0194] The second ball B2 may be attached to the 2-3 protrusion 1223b. The second ball B2 may be disposed on the 3-2 sidewall M2. The second ball B2 may contact the inner surface of the 3-2 sidewall M2. The second ball B2 may have a radius r. This description is equally applicable to the first balls B1a and B1b. In addition, in the embodiment, the distance l1 from the center C1 of the second ball B2 to the inner surface M of the 3-2 sidewall M2 may be greater than or equal to the radius r of the second ball B2.

[0195] The second ball B2 may be attached to the third side surface P1 and the third bottom surface P2 of the third protrusion portion PR3. At least a portion of the second ball B2 may overlap with the third protrusion portion PR3 in the first direction (X-axis direction).

[0196] In addition, the second ball B2 may contact the third bottom surface P2. A contact point between the third bottom surface P2 and the second ball B2 and a contact point between the third housing side portion 1223 and the second ball B2 may be located on a line parallel to the third direction (Z-axis direction). Accordingly, a coupling force between the holder 1231 and the housing 1220 may be maintained through the second ball B2.

[0197] The second ball B2 may be spaced apart from at least a portion of the third side surface P1. In other words, the distance from the center of the ball portion to the side surface of the adjacent protrusion may be greater than the distance from the center of the ball portion to the bottom surface of the adjacent protrusion.

[0198] In the embodiment, the distance from the center C1 of the second ball B2 to the bottom surface P2 of the third recess may be smaller than the distance to the side surface P1 of the third recess. Thus, a separation distance d21, d22 may be formed between the second ball B2 and the first side surface P1. The separation distance d22 may provide a space for the third protrusion part PR3 to perform X-axis tilt or Y-axis tilt along the second ball B2.

[0199] The 1-1 ball B1a can come into contact with the inner surface of the first housing side portion 1221.

[0200] Also, the 1-1 ball B1a may be mounted in the first recess RS1 of the first protrusion PR1. At least a portion of the 1-1 ball B1a may overlap the first recess RS1 in the first direction (X-axis direction) or the third direction (Z-axis direction). Also, the 1-1 ball B1a may overlap the first recess RS1 in the second direction (Y-axis direction).

[0201] In addition, the 1-1 ball B1a may be at least partially spaced apart from the first side surface N1 of the first recess RS1. When no current is injected into the first coil 1252a and the second coil 1252b, the 1-1 ball B1a may be spaced apart from the first side surface N1.

[0202] In addition, the 1-1 ball B1a can contact the first bottom surface N2. With this configuration, the 1-1 ball B1a can contact the first bottom surface N2 and the first housing side. Department 1221. Thus, the first housing side portion 1221 and the holder (the outer surface 1231S1 of the first holder) can be coupled to each other through the first-1 ball B1a.

[0203] In addition, the distance from the center C01 of the 1-1 ball B1a to the first side surface N1 may be greater than the distance from the center C01 of the 1-1 ball B1a to the first bottom surface N2. Therefore, there may be a distance d11 between the 1-1 ball B1a and the first side surface N1. With this configuration, the 1-1 ball B1a provides a coupling force between the first housing side portion 1221 and the first holder outer surface 1231S1, and X-axis tilt or Y-axis tilt may be easily performed.

[0204] In addition, the 1-2 ball B1b can come into contact with the inner surface of the second housing side portion 1222.

[0205] Also, the 1-2 ball B1b may be mounted in the second recess RS2 of the second protrusion PR2. At least a portion of the 1-2 ball B1b may overlap the second recess RS2 in the first direction (X-axis direction) or the third direction (Z-axis direction). Also, the 1-2 ball B1b may overlap the second recess RS2 in the second direction (Y-axis direction).

[0206] In addition, the first-2 ball B1b may be at least partially spaced apart from the second side surface O1 of the second recess RS2. When no current is injected into the first coil 1252a and the second coil 1252b, the first-2 ball B1b may be spaced apart from the second side surface O1.

[0207] In addition, the first-2 ball B1b can contact the second bottom surface O2. With this configuration, the first-2 ball B1b can contact the second bottom surface O2 and the second housing side. Department 1222. Thus, a connection can be made between the second housing side portion 1222 and the holder (the second holder outer surface 1231S2) through the first-2 ball B1b.

[0208] In addition, the distance from the center C02 of the 1-2 ball B1b to the second side surface O1 may be greater than the distance from the center C02 of the 1-2 ball B1b to the second bottom surface O2. Therefore, a distance d12 may exist between the 1-2 ball B1b and the second side surface O1. With this configuration, the 1-2 ball B1b provides a coupling force between the second housing side portion 1222 and the second holder outer surface 1231S2, and X-axis tilt or Y-axis tilt may be easily performed.

[0209] 12a and 12b are diagrams illustrating one-axis tilt of the second camera actuator according to the embodiment.

[0210] 12a and 12b, Y-axis tilt can be performed, i.e., OIS can be realized while rotating in a first direction (X-axis direction).

[0211] In this embodiment, the third magnet 1251c disposed on the outer surface 1231S3 of the third holder may generate electromagnetic force together with the third coil 1252c to tilt or rotate the mover 1230 in the first direction (X-axis direction).

[0212] As described above, the second ball B2 can tilt or move to the upper or lower side within the third recess of the third protrusion. Even during such tilting, the second ball B2 can maintain the contact between the inner surface of the third housing side and the outer surface of the third holder without any change. Therefore, the coupling force between the holder and the housing can be maintained, and the reliability of the camera actuator can be maintained.

[0213] As described above, the mover can rotate or tilt around two axes or in a first direction (X-axis direction) based on the contact point between the third bottom surface and the second ball.

[0214] The OIS may be realized by rotating the holder (or mover) at the first angle θ1 (X1->X1a) in the X-axis direction by the first electromagnetic forces F1A and F1B between the third magnet 1251c and the third coil 1252c located in the third housing side portion 1223. Also, the OIS may be realized by rotating the mover 1230 at the first angle θ1 in the X-axis direction (X1->X1b) by the first electromagnetic forces F1A and F1B between the third magnet 1251c and the third coil 1252c. The first angle θ1 may be ±1° to ±3°. However, it is not limited thereto.

[0215] 13a and 13b are diagrams illustrating two-axis tilt of the second camera actuator according to an embodiment.

[0216] Referring to FIG. 13a and FIG. 13b, OIS can be realized while the mover (or holder) is tilted or rotated in the Y-axis direction.

[0217] In the embodiment, the first magnet 1251a and the second magnet 1251b in the camera actuator can form electromagnetic forces with the first coil 1252a and the second coil 1252b, respectively, to tilt or rotate the holder 1231 in the second direction (Y-axis direction).

[0218] The first-1 ball B1a can move to the left or right side of the side surface in the first recess of the first protrusion. Even during such tilting, the first-1 ball B1a can maintain the contact point between the inner surface of the first housing side portion and the outer surface of the first holder without any change.

[0219] Also, the 1-2 ball B1b can move to the right or left side of the side in the second recess of the second protrusion. Even during such tilting, the 1-2 ball B1b can maintain the point between the inner surface of the second housing side and the outer surface of the second holder without any change. Therefore, the coupling force between the holder and the housing can be maintained, and the reliability of the camera actuator can be maintained. Also, the OIS can be performed accurately.

[0220] The mover (or holder) can rotate or tilt around two axes or in a second direction (Y-axis direction) based on the point between the first bottom surface and the 1-1 ball. Correspondingly, the mover (or holder) can rotate or tilt around two axes or in a second direction (Y-axis direction) based on the point of contact between the second bottom surface and the 1-2 ball.

[0221] The second electromagnetic forces F2A and F2B between the first and second magnets 1251a and 1251b and the first and second coils 1252a and 1252b rotate the mover 1230 at the second angle θ2 (Y1->Y1a) in the Y-axis direction, thereby realizing OIS. Also, the second electromagnetic forces F2A and F2B between the first and second magnets 1251a and 1251b and the first and second coils 1252a and 1252b rotate the mover (or holder) at the second angle θ2 (Y1->Y1b) in the Y-axis direction, thereby realizing OIS. The second angle θ2 may be ±1° to ±3°. However, it is not limited thereto.

[0222] In this way, the second camera actuator according to the embodiment rotates the mover (or holder) in a first direction (X-axis direction) or a second direction (Y-axis direction) by the electromagnetic force between the driving magnet in the holder and the driving coil arranged in the housing, thereby minimizing the occurrence of decentering and tilting phenomena when implementing the OIS and providing the best optical characteristics. Also, 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).

[0223] FIG. 14 is a flowchart showing a shake correction method for a camera device according to an embodiment of the present invention.

[0224] Referring to FIG. 14, a sensor built into the camera device detects at least one of the tilt direction and tilt degree of the camera device or lens (S300). Here, the tilt of the camera device or lens may occur due to a movement caused by a hand shake or an external vibration, and may be expressed as an amount of distortion of the optical axis. The tilt direction of the lens may be a plane perpendicular to the optical axis, i.e., a direction horizontal to the plane on which the lens is arranged, and the tilt degree of the lens may be expressed as at least one of the tilt magnitude and tilt angle. In order to detect at least one of the tilt direction and tilt degree of the lens, the sensor may include a gyro sensor, but is not limited thereto, and various sensors capable of detecting the shake or movement of the camera device or lens may be used.

[0225] Next, the control unit generates a signal to control the second actuator according to at least one of the tilt direction and the tilt degree of the lens detected by the sensor (S310). Here, the signal to control the second actuator may be expressed as a current value applied to a coil driver of the second actuator to correct the tilt of the camera device or the lens.

[0226] Next, the second actuator corrects the tilting of the camera device or the lens according to the signal generated in step S310 (S320). According to an embodiment of the present invention, the prism unit and the shake correction unit included in the second actuator can move according to the signal applied to the coil driver of the second actuator, and accordingly, the optical path of the light passing through the lens member included in the shake correction unit can be changed, so that the shake of the camera device or the lens can be optically corrected.

[0227] Fig. 15 is a perspective view of a second actuator according to another embodiment of the present invention, Fig. 16 is an exploded perspective view of the second actuator according to Fig. 15, Fig. 17 is a sectional view in a first direction of the second actuator according to Fig. 15, and Fig. 18 is a sectional view in a second direction of the second actuator according to Fig. 15. Fig. 19 shows a circuit board and a coil drive section of the second actuator according to Fig. 15, Fig. 20 shows a shake correction unit and a part of a magnet drive section of the second actuator according to Fig. 15, Fig. 21 shows a prism unit and the remaining part of the magnet drive section of the second actuator according to Fig. 15, and Fig. 22 shows a housing of the second actuator according to Fig. 15.

[0228] 15 to 18, the second actuator 3200 includes a housing 3210, a shake correction unit 3220, a prism unit 3230, a driving unit 3240, and a second circuit board 3250. The shake correction unit 3220 includes a shaper member 3222 and a lens member 3224, and the driving unit 3240 may include a magnet driving unit 72M and a coil driving unit 72C. The prism unit 3230 is disposed on the shake correction unit 3220, and the coil driving unit 72C may be electrically connected to the second circuit board 3250. Here, the housing 3210 may correspond to the holder described above, the prism unit 3230 may correspond to the optical member described above, the driving unit 3240 may correspond to the driving coil and driving magnet described above, and the second circuit board 3250 may correspond to the board portion described above, and although terms may be used interchangeably, the components described below may differ depending on the embodiment.

[0229] In this way, by disposing the shake correction unit 3220 below the prism unit 3230, it is possible to eliminate the lens size restriction in the lens assembly of the optical system when realizing the OIS, and to ensure a sufficient amount of light.

[0230] According to an embodiment of the present invention, the magnet driver 72M includes a first magnet driver 72M1, a second magnet driver 72M2, and a third magnet driver 72M3, and the coil driver 72C includes a first coil driver 72C1, a second coil driver 72C2, and a third coil driver 72C3. According to an embodiment of the present invention, the interaction between the first magnet driver 72M1 and the first coil driver 72C1 and the interaction between the second magnet driver 72M2 and the second coil driver 72C2 can be used to tilt the shake correction unit 3220 about the second axis (hereinafter referred to as the X-axis), and the interaction between the third magnet driver 72M3 and the third coil driver 72C3 can be used to tilt the prism unit 3230 about the first axis (hereinafter referred to as the Y-axis). This allows X-axis tilting and Y-axis tilting to be performed using three pairs of actuators, and the actuators for Y-axis tilting can be disposed in the space between the housing 3210 and the prism unit 3230, thereby reducing the overall size of the second actuator.

[0231] To this end, the second circuit board 3250 may be connected to a power supply (not shown) to apply power to the coil driver 72 C. The second circuit board 3250 may include a circuit board having a wiring pattern that can be electrically connected, such as a rigid printed circuit board (Rigid PCB), a flexible printed circuit board (Flexible PCB), or a rigid flexible printed circuit board (Rigid Flexible PCB).

[0232] As shown in FIG. 19, a first coil driving section 72C1, a second coil driving section 72C2, and a third coil driving section 72C3 may be arranged on a second circuit board 3250.

[0233] 20, the shake correction unit 3220 includes a shaper member 3222 and a lens member 3224, the shaper member 3222 is disposed on the lens member 3224, and the shape of the lens member 3224 may be deformed by the movement of the shaper member 3222. At this time, a first magnet driver 72M1 and a second magnet driver 72M2 may be disposed on both sides of the shaper member 3222, and a first coil driver 72C1 and a second coil driver 72C2 may be disposed on the second circuit board 3250 to face the first magnet driver 72M1 and the second magnet driver 72M2, respectively. The shaper member 3222 may be moved by an electromagnetic force between the first coil driver 72C1 and the first magnet driver 72M1 and an electromagnetic force between the second coil driver 72C2 and the second magnet driver 72M2 due to a voltage applied to the first coil driver 72C1 and the second coil driver 72C2. Accordingly, the shape of the lens member 3224 is reversibly deformed, and the path of light passing through the lens member 3224 is changed, thereby implementing the OIS.

[0234] More specifically, the shaper member 3222 may include a shaper body having a hole through which light can pass and a protrusion extending laterally from the shaper body. The lens member 3224 may be disposed under the shaper body, the first magnet driver 72M1 may be disposed on the first protrusion 3222-1 of the shaper member 3222, and the second magnet driver 72M2 may be disposed on the second protrusion 3222-2 of the shaper member 3222. At this time, each of the magnet drivers 72M1 and 72M2 may be disposed to be coupled with the shaper member 3222. For example, grooves may be formed on each of the protrusions 3222-1 and 3222-2 of the shaper member 3222, and each of the magnet drivers 72M1 and 72M2 may be inserted into the grooves. Here, the first protrusion 3222-1 and the second protrusion 3222-2 may be disposed on both sides of the shaper member 3222, that is, symmetrically with respect to the X-axis, and accordingly, the shake correction unit 3220 may be tilted about the X-axis.

[0235] Also, the coil driving unit 72C may further include a Hall sensor to recognize the position of the magnet driving unit 72M described below. For example, the first coil driving unit 72C1 may include a first Hall sensor, the second coil driving unit 72C2 may include a second Hall sensor, and the third coil driving unit 72C3 may include a third Hall sensor.

[0236] Meanwhile, the prism 3231 may be a right-angle prism and may be disposed inside the first magnet driving section 72M1 and the second magnet driving section 72M2 of the shake correction unit 3220. Such a prism 3231 corresponds to the optical member described above, and may be a mirror or the like.

[0237] FIG. 21a is a perspective view of a prism unit of a second actuator according to another embodiment of the present invention, FIG. 21b is an exploded perspective view of the prism unit of FIG. 21a, and FIG. 21c is a perspective view of a prism cover of the prism unit of FIG. 21a.

[0238] 21a to 21c, the prism unit 3230 includes a prism 3231 and a prism cover 3232. The prism cover 3232 includes a support wall 3232a and a first side wall 3232b and a second side wall 3232c extending from both side edges of the support wall 3232a, and the prism 3231 may be disposed in an area formed by the support wall 3232a, the first side wall 3232b, and the second side wall 3232c. The prism 3231 is a reflecting part and may be, but is not limited to, a right-angle prism. The prism cover 3232 may further include a first fixing wall 3232d extending from the first side wall 3232b and a second fixing wall 3232e extending from the second side wall 3232c. Accordingly, the prism 3231 may be stably mounted in the prism cover 3232.

[0239] A first groove 3232ab in which the third magnet driving part 72M3 is disposed and a second groove 3232aa in which the sensing magnet SM is disposed may be formed on the surface opposite to the surface on which the prism 3231 is disposed, i.e., the outer surface, of the support wall 3232a of the prism cover 3232.

[0240] Meanwhile, the prism cover 3232 may further include a rotation guide 3232f. Although the rotation guide 3232f is illustrated as being formed to protrude from the surface opposite to the surface on which the prism 3231 is disposed, i.e., the outer surface, of both sides of the support wall 3232a, the present invention is not limited thereto, and may be formed to protrude from the outer surface of at least one of the first side wall 3232b and the second side wall 3232c. For example, the rotation guide 3232f may include a first guide portion 3232fa extending vertically and protruding from the outer surface of the support wall 3232a, and a second guide portion 3232fb extending vertically and protruding from the first guide portion 3232fa. Accordingly, the second guide portion 3232fb may function as a rotation axis. For example, the second guide portion 3232fb may be coupled to a hole formed in the housing 3210 described below, so that the prism unit 3230 may be tilted in the Y axis.

[0241] Conversely, a rotation guide may be formed to protrude from the housing 3210 in the Y-axis direction and rotatably coupled to a hole formed in the prism cover 3232, so that the prism unit 3230 may be tilted in the Y-axis direction.

[0242] For this, as described above, the third magnet driver 72M3 may be disposed on the outer surface of the support wall 3232a of the prism cover 3232, and the third coil driver 72C3 may be disposed to face the third magnet driver 72M3. For this, as shown in FIG. 19, the second circuit board 3250 may include a first surface 3251 on which the first coil driver 72C1 is disposed, a second surface 3252 facing the first surface 3251 on which the second coil driver 72C2 is disposed, a third surface 3253 connecting the first surface 3251 and the second surface 3252, and a fourth surface 3254 extending obliquely from the third surface 3253 and on which the third coil driver 72C3 is disposed. Here, the fourth surface 3254 and the third coil driver 72C3 may be disposed to face the support wall 3232a of the prism cover 3232.

[0243] Next, FIG. 22a is an exploded perspective view of a housing included in a second actuator according to another embodiment of the present invention, and FIG. 22b is a perspective view of a base of the housing included in a second actuator according to another embodiment of the present invention.

[0244] 22a, the housing 3210 includes a cover 3212, a case 3213 and a base 3214. The cover 3212, the case 3213 and the base 3214 can be fitted or fastened to each other, and thus can accommodate and support the prism unit 3230.

[0245] The cover 3212 may include a first cover side 3212a, a second cover side 3212b, and a third cover side 3212c, and the third cover side 3212c may be disposed between the first cover side 3212a and the second cover side 3212b. Here, a first side recess 3212m may be formed in the first cover side 3212a, a second side recess 3212k may be formed in the second cover side 3212b, and a first coil driver 72C1 and a second coil driver 72C2 may be disposed in the first side recess 3212m and the second side recess 3212k.

[0246] Meanwhile, a first groove (not shown) may be formed in the first cover side 3212a, and a second groove HG may be formed in the second cover side 3212b. A protrusion of the case 3213 may be fitted and fixed in the first groove, and a protrusion 3214a of the base 3214 may be fitted and fixed in the second groove HG.

[0247] According to an embodiment of the present invention, the prism unit 3230 can be tilted in the Y-axis direction by an electromagnetic force between the third magnet driving unit 72M3 and the third coil driving unit 72C3 arranged on the prism cover 3232. At this time, the third coil driving unit 72C3 can be arranged on the fourth surface 3254 of the second circuit board 3250, and the fourth surface 3254 can be arranged between the base 3214 and the prism cover 3232. And, the fourth surface 3254 can be supported by the base 3214.

[0248] 22b, the base 3214 may include a mounting surface 3214b for mounting the fourth surface 3254 of the second circuit board 3250, and a side surface 3214c extending in a perpendicular direction from one end of the mounting surface 3214b. At this time, a protrusion 3214a to be inserted into a second groove HG formed in the second cover side portion 3212b of the cover 3212 may be formed on an outer surface of the side surface 3214c, and a groove 3214d into which a rotation guide 3232f of the prism cover 3232 is inserted may be formed on an inner surface of the side surface 3214c.

[0249] As described above, the second guide part 3232fb of the rotation guide 3232f functions as a rotation axis, and the second guide part 3232fb is rotatably coupled to the groove 3214d, so that the prism unit 3230 can be rotated or tilted. For example, the prism unit 3230 can be tilted in the Y-axis direction by the electromagnetic force between the third magnet driving part 72M3 mounted on the outer surface of the support wall 3232a of the prism cover 3232 and the third coil driving part C3 disposed on the inclined surface 3253 of the second circuit board 3250.

[0250] As described above, the rotation guide may protrude from the side surface 3214c of the base 3214, and may be inserted into a groove in the prism cover 3232, so that the rotation guide functions as a rotation axis.

[0251] 23(a) and 23(b) are diagrams illustrating tilting of a second actuator in the Y-axis direction according to another embodiment of the present invention.

[0252] As described above, the sensing magnet SM may be further disposed on the prism cover 3232 of the prism unit 3230, and the Hall sensor HS may be further disposed on the fourth surface 3254 of the second circuit board 3250 at a position opposite to the sensing magnet SM.

[0253] 23(a) and 23(b), OIS may be implemented while the prism unit 3230 rotates around the Y-axis. For example, the third magnet driver 72M3 disposed in the prism cover 3232 may generate electromagnetic force together with the third coil driver 72C3 to tilt or rotate the prism unit 3230 in the Y-axis direction.

[0254] Specifically, the third magnet actuator 72M3 may rotate the prism unit 3230 at a predetermined angle θ' (Y1'->Y1a') in the Y-axis direction by the first electromagnetic forces F1a' and F1b' with the third coil actuator 72C3, thereby realizing OIS. Here, the predetermined angle θ' may be ±3°.

[0255] As described above, according to the embodiment of the present invention, the tilt correction unit is tilted in the second axis and the prism unit is tilted in the first axis perpendicular to the second axis to correct the optical path. As a result, the first axis tilt and the second axis tilt can be simultaneously implemented while minimizing the volume and area occupied by the driving unit included in the actuator. In addition, the number of coil driving units and magnet driving units constituting the driving unit can be reduced, thereby reducing power consumption.

[0256] Meanwhile, the above description has focused on a camera module including an actuator for OIS and an actuator for AF or zoom, and in particular, in Figures 13a and 13b, the lens assembly of the first actuator 1100 performing the zooming function or the AF function is described as a pin type in which the lens assembly is guided by a guide pin, but is not limited thereto. The actuator performing the zooming function or the AF function may be a ball type in which the actuator is guided by a ball.

[0257] Fig. 24 is a perspective view of a second camera actuator according to still another embodiment of the present invention. Fig. 25 is an exploded perspective view of a second camera actuator according to still another embodiment of the present invention. Fig. 26 is a plan view of a second camera actuator according to still another embodiment of the present invention. Fig. 27 is a cross-sectional view taken along CC' in Fig. 26. Fig. 28 is a perspective view of a portion of the configuration in Fig. 24. Figs. 29 and 30 are perspective views of a portion of the configuration in Fig. 28. Fig. 31 is a perspective view of a guide portion of a second camera actuator according to still another embodiment of the present invention.

[0258] 24 to 31, the second camera actuator 5000 according to another embodiment of the present invention may include a housing 100, a guide unit 200, a prism mover 300, a prism 400, a first driving unit 500, a substrate 600, a second driving unit 700, a cover can 800, and a sensor 900, but may be implemented without some of the configurations, and other additional configurations are not excluded. The cover can 800 corresponds to the above-mentioned shield can, the housing 100 corresponds to the above-mentioned housing, the guide unit 200 corresponds to the above-mentioned ball unit, the prism mover 300 corresponds to the holder, the prism 400 corresponds to the optical member, the first driving unit 500 corresponds to the driving magnet, the second driving unit 700 corresponds to the driving coil, the substrate 600 corresponds to the above-mentioned substrate unit 700, and the sensor 900 corresponds to the above-mentioned Hall sensor. Therefore, the above-mentioned contents may be applied to the corresponding components except for the contents described below.

[0259] The second camera actuator 5000 may include a housing 100. The housing 100 may form the exterior of the second camera actuator 5000. The housing 100 may be formed in a hexahedral shape with an open top and side. The housing 100 may include a guide unit 200, a prism mover 300, a prism 400, a first actuator 500, a substrate 600, a second actuator 700, and a sensor 900.

[0260] The housing 100 may include a bottom surface 140, a first side wall 110, a second side wall 120 facing the first side wall 110, and a third side wall 130 connecting the first side wall 110 and the second side wall 120. A substrate 600 may be disposed on the bottom surface 140, the first side wall 110, and the second side wall 120 of the housing 100. A second actuator 700 may be disposed on the first side wall 110 and the second side wall 120 of the housing 100. The bottom surface 140, the first side wall 110, and the second side wall 120 of the housing 100 may include a groove 150 in which the second actuator 700 is disposed.

[0261] The guide unit 200 may be disposed between the third side wall 130 of the housing 100 and the prism mover 300. The guide unit 200 may be coupled to the third side wall 130 of the housing 100. The third side wall 130 of the housing 100 may include a side wall groove 132 to which the spherical portion 220 of the guide unit 200 is coupled. The side wall groove 132 may include a curved surface. The side wall groove 132 may include a first region having a first diameter, a second region having a diameter smaller than the first diameter as the first region approaches the prism mover 300, and a third region having a diameter smaller than the first diameter as the first region moves away from the prism mover 300. The guide unit 200 may be snap-fit ​​coupled to the side wall groove 132 through the second region. That is, when the spherical portion 220 of the guide part 200 is pressed and inserted into the side wall groove 132, the guide part 200 may not be separated from the side wall groove 132 through the second region.

[0262] 29, the housing 100 may be formed in two parts. Specifically, the housing 100 may include a first housing part and a second housing part. The first housing part and the second housing part may be formed to be symmetrical to each other. The first housing part and the second housing part may be bonded together with an adhesive. A sidewall groove 132 may be formed at a portion where the first housing part and the second housing part are bonded together.

[0263] The second camera actuator 5000 may include a guide portion 200. The guide portion 200 may be disposed between the housing 100 and the prism mover 300. The guide portion 200 may be disposed between the opposing surfaces of the prism mover 300 and the housing 100. The guide portion 200 may include a coupling portion 210 coupled to the prism mover 300, a spherical portion 220 extending from the coupling portion 210, and a protrusion 230 formed on the spherical portion 220.

[0264] The cross section of the coupling portion 210 of the guide portion 200 may be formed smaller than the cross section of the spherical portion 220. The cross section of the coupling portion 210 may be formed in a square shape. The coupling portion 210 may be coupled to the mover groove 332 of the prism mover 300. After the coupling portion 210 is inserted into the mover groove 332 of the prism mover 300, an adhesive may be applied to the space between the mover grooves 332 of the coupling portion 210. Alternatively, the coupling portion 210 may be formed integrally with the prism mover 300.

[0265] The spherical portion 220 of the guide portion 200 may be formed as an extension from the coupling portion 210. The spherical portion 220 may be formed in the shape of a sphere or a part of a sphere. The cross section of the spherical portion 220 may be formed to be larger than the cross section of the coupling portion 210. The spherical portion 220 may be disposed in the side wall groove 132 of the housing 100. The cross section of the spherical portion 220 may be formed to be smaller than the cross section of the side wall groove 132 of the housing 100. The spherical portion 220 may be disposed in the side wall groove 132 of the housing 100. 100 13. The sidewall groove 132 of the casing 130 may be fitted into the sidewall groove 1

[0266] The protrusion 230 of the guide part 200 may be formed to protrude outward from the spherical part 220. The protrusion 230 may be formed in the shape of a part of a sphere. The protrusion 230 may include a plurality of protrusions spaced apart from each other. The protrusion 230 may contact the inner surface of the sidewall groove 132 of the housing 100. This reduces friction between the sidewall groove 132 and the guide part 200 when the prism mover 300 is tilted, thereby preventing damage to the product.

[0267] Through this, the guide unit 200 can guide the biaxial tilting of the prism mover 300. The guide unit 200 can be made of a non-magnetic material. For example, the guide unit 200 can be made of a stainless steel (SUS) material. Through this, electromagnetic interference with the first driving unit 500 and the second driving unit 700 can be prevented.

[0268] The second camera actuator 5000 may include a prism mover 300. The prism mover 300 may be disposed in the housing 100. The prism mover 300 may be disposed inside the housing 100. The prism mover 300 may be tiltably supported within the housing 100 by a guide portion 200. The prism mover 300 may include a receiving portion in which the prism 400 is disposed.

[0269] Prism mover 300 may include a first side 310, a second side 320 facing first side 310, an inclined portion 340 connecting first side 310 and second side 320 and having a predetermined inclination, and a support portion 330 extending downward from inclined portion 340. First side 310 of prism mover 300 may face first side wall 110 of housing 100, second side 320 of prism mover 300 may face second side wall 120 of housing 100, and support portion 330 of prism mover 300 may face third side wall 130 of housing 100.

[0270] A first actuator 500 may be disposed on first and second sides 310, 320 of the prism mover 300. First and second magnet units 512, 514 may be disposed on the first side 310 of the prism mover 300. Third and fourth magnet units 522, 524 may be disposed on the second side 320 of the prism mover 300.

[0271] A prism may be disposed on the inclined portion 340 of the prism mover 300 .

[0272] A mover groove 332 may be formed in the support part 330 of the prism mover 300. The mover groove 332 may be disposed at a position corresponding to the side wall groove 132 of the housing 100. The size of the mover groove 332 may be smaller than the size of the side wall groove 132. The mover groove 332 may face the side wall groove 132. The mover groove 332 may be formed in a shape and size corresponding to the coupling part 210 of the guide part 200.

[0273] The second camera actuator 5000 may include a prism 400. The prism 400 may be disposed inside the housing 100. The prism 400 may be disposed on the prism mover 300. The prism 400 may be disposed on the inclined portion 340 of the prism mover 300. The top and side surfaces of the prism 400 may be exposed to the outside. The prism 400 may reflect light traveling at the top to change the travel path of the light vertically. The prism 400 is coupled to the prism mover 300 and may be tilted with respect to a first axis by the movement of the prism mover 300, and may be tilted with respect to a second axis perpendicular to the first axis.

[0274] The second camera actuator 5000 may include a first actuator 500. The first actuator 500 may be disposed in the prism mover 300. The first actuator 500 may be disposed in a groove 350 of the prism mover 300. The first actuator 500 may include a magnet. The first actuator 500 may face a second actuator 700. The first actuator 500 may tilt the prism mover 300 through electromagnetic interaction with the second actuator 700.

[0275] The first actuator 500 may include first and second magnet units 512, 514 disposed on a first side 310 of the prism mover 300, and third and fourth magnet units 522, 524 disposed on a second side 320. The length of the first and third magnet units 512, 522 in a first direction may be longer than the length of the second and fourth magnet units 514, 524 in the first direction, and the length of the first and third magnet units 512, 522 in a second direction perpendicular to the first direction may be shorter than the length of the second and fourth magnet units 514, 524 in the second direction. Here, the first direction may refer to the direction of light reflected by the prism 400, and the second direction may refer to the direction of light incident on the prism 400.

[0276] The first and third magnet units 512, 522 may face the first and third coil units 712, 722. The first and third magnet units 512, 522 may tilt the prism 400 and the prism mover 300 with respect to the second axis through electromagnetic interaction with the first and third coil units 712, 722.

[0277] The second and fourth magnet units 514, 524 may face the second and fourth coil units 714, 724. The second and fourth magnet units 514, 524 may tilt the prism 400 and the prism mover 300 based on a first axis perpendicular to the second axis through electromagnetic interaction with the second and fourth coil units 714, 724.

[0278] The second camera actuator 5000 may include a yoke (YK). The yoke may be disposed between the first actuator 500 and the prism mover 300. The yoke may surround at least a portion of the first actuator 500 except for the surface facing the second actuator 700, to prevent leakage of the magnetic field.

[0279] The second camera actuator 5000 may include a substrate 600. The substrate 600 may be disposed in the housing 100. A lower surface of the substrate 600 may be disposed on a lower surface 140 of the housing 100. The substrate 600 may be disposed on a first side wall 110 and a second side wall 120 of the housing 100. A second actuator 700 may be disposed on the substrate 600. The substrate 600 may be electrically connected to the second actuator 700. The substrate 600 may be supplied with power from an external source to supply current to the second actuator 700. The substrate 600 may be electrically connected to a sensor 900. The substrate 600 may supply current to the sensor 900.

[0280] The substrate 600 may be at least partially bent. The substrate 600 may include first to third surfaces. The first to third surfaces of the substrate 600 may be disposed on the lower surface 140 of the housing 100 and the first and second side walls 110, 120, respectively.

[0281] The substrate 600 may include a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

[0282] The second camera actuator 5000 may include a second actuator 700. The second actuator 700 may be disposed in the housing 100. The second actuator 700 may be disposed inside the housing 100. The second actuator 700 may be disposed in the housing 100. The second actuator 700 may be disposed on the substrate 600. The second actuator 700 may be electrically connected to the substrate 600. The second actuator 700 may include a coil. The second actuator 700 may face the first actuator 500. The second actuator 700 may tilt the prism 400 and the prism mover 300 through electromagnetic interaction with the first actuator 500.

[0283] The second actuator 700 may include a first coil 710 disposed on a first surface of the substrate 600 or a first sidewall 110 of the housing 100, and a second coil 720 disposed on a second surface of the substrate 600 or a second sidewall 120 of the housing 100. The first coil 710 may include a first coil unit 712 and a second coil unit 714 spaced apart from each other. The second coil 720 may include a third coil unit 722 and a fourth coil unit 724 spaced apart from each other.

[0284] The length in the first direction of the first and third coil units 712, 722 may be shorter than the length in the first direction of the second and fourth coil units 714, 724, and the length in the second direction of the first and third coil units 712, 722 may be longer than the length in the second direction of the second and fourth coil units 714, 724. The first coil unit 712 may face the first magnet unit 512, the second coil unit 714 may face the second magnet unit 514, the third coil unit 722 may face the third magnet unit 522, and the fourth coil unit 724 may face the fourth magnet unit 524. The first and third coil units 712, 722 may tilt the prism 400 and the prism mover 300 with respect to the second axis through electromagnetic interaction with the first and third magnet units 512, 522. The second and fourth coil units 714 and 724 can tilt the prism 400 and the prism mover 300 about the second axis through electromagnetic interaction with the second and fourth magnet units 514 and 524 .

[0285] The second camera actuator 5000 may include a cover can 800. The shield can 800 may surround the housing 100. The shield can 800 may be made of a metal material. The shield can 800 may prevent an electromagnetic field generated inside the second camera actuator 5000 from emitting to the outside. The shield can 800 may prevent electromagnetic interference inside the second camera actuator 5000 that may be generated from the outside.

[0286] The second camera actuator 5000 may include a sensor 900. The sensor 900 may be disposed in the second actuator 700. The sensor 900 may face the first actuator 500. The sensor 900 may be electrically connected to the substrate 600. The sensor may include a Hall sensor. The sensor 900 may sense the movement of the first actuator 500. Feedback control is possible through this. The sensor 900 may include a plurality of sensor units disposed in at least one of the first to fourth coil units 712, 714, 722, and 724, respectively.

[0287] According to still another embodiment of the present invention, the size of the product can be reduced since tilting of the prism 400 based on the first axis and tilting of the prism 400 based on the second axis are possible through a simple structure of the guide part 200. Here, the tilting angle of the prism 400 based on the first axis may be within ±3 degrees, and the tilting angle of the prism 400 based on the second axis may be within ±3 degrees.

[0288] Figure 32 is a perspective view of an AF or Zoom actuator for another embodiment of the present invention, Figure 33 is a perspective view of the actuator for the embodiment shown in Figure 32 with some components omitted, Figure 34 is an exploded perspective view of the actuator for the embodiment shown in Figure 32 with some components omitted, Figure 35a is a perspective view of the first lens assembly in the actuator for the embodiment shown in Figure 34, and Figure 35b is a perspective view of the first lens assembly shown in Figure 35a with some components removed.

[0289] FIG. 32 is a perspective view of an actuator for AF or Zoom according to another embodiment of the present invention, FIG. 33 is a perspective view of the actuator according to the embodiment shown in FIG. 32 with some components omitted, and FIG. 34 is an exploded perspective view of the actuator according to the embodiment shown in FIG. 32 with some components omitted.

[0290] Referring to FIG. 32, an actuator 2100 according to the embodiment may include a housing 2020 , a circuit board 2040 , a driving unit 2142 , and a third lens assembly 2130 disposed outside the housing 2020 .

[0291] FIG. 33 is an oblique view in which the housing 2020 and the circuit board 2040 in FIG. 32 are omitted, and referring to FIG. 33, the actuator 2100 of the embodiment may include a first guide part 2210, a second guide part 2220, a first lens assembly 2110, a second lens assembly 2120, a driving part 2141, and a driving part 2142.

[0292] The driving portion 2141 and the driving portion 2142 may include a coil or a magnet.

[0293] For example, when the driving part 2141 and the driving part 2142 include coils, the driving part 2141 may include a first coil part 2141b and a first yoke 2141a, and the driving part 2142 may include a second coil part 2142b and a second yoke 2142a.

[0294] Alternatively, on the contrary, driving portion 2141 and driving portion 2142 may include magnets.

[0295] Referring to FIG. 34, the actuator 2100 according to the embodiment may include a housing 2020, a first guide portion 2210, a second guide portion 2220, a first lens assembly 2110, a second lens assembly 2120, and a third lens assembly 2130.

[0296] For example, the actuator 2100 of the embodiment may include a housing 2020, a first guide portion 2210 arranged on one side of the housing 2020, a second guide portion 2220 arranged on the other side of the housing 2020, a first lens assembly 2110 corresponding to the first guide portion 2210, a second lens assembly 2120 corresponding to the second guide portion 2220, a first ball 2117 (see FIG. 35a) arranged between the first guide portion 2210 and the first lens assembly 2110, and a second ball (not shown) arranged between the second guide portion 2220 and the second lens assembly 2120.

[0297] Additionally, the embodiment may include a third lens assembly 2130 disposed in front of the first lens assembly 2110 in the optical axis direction.

[0298] 33 and 34, the embodiment may include a first guide portion 2210 arranged adjacent to a first side wall of the housing 2020, and a second guide portion 2220 arranged adjacent to a second side wall of the housing 2020.

[0299] The first guide portion 2210 may be disposed between the first lens assembly 2110 and a first side wall of the housing 2020 .

[0300] The second guide portion 2220 may be disposed between the second lens assembly 2120 and the second side wall of the housing 2020. The first side wall and the second side wall of the housing 2020 may be disposed to face each other.

[0301] According to the embodiment, the lens assembly is driven while the first guide part 2210 and the second guide part 2220, which are precisely numerically controlled, are combined within the housing 2020, thereby reducing frictional torque and frictional resistance, resulting in technical effects such as improved driving force, reduced power consumption, and improved control characteristics during zooming.

[0302] As a result, according to the embodiment, there are multiple technical effects that the friction torque during zooming is minimized while preventing the occurrence of lens decentering, lens tilt, and misalignment between the central axis of the lens group and the image sensor, thereby significantly improving image quality and resolution.

[0303] In particular, according to this embodiment, a guide rail is not provided on the housing itself, but a first guide part 2210 and a second guide part 2220 which are formed separately from the housing 2020 and assembled thereto are separately adopted, thereby providing a special technical effect of preventing the occurrence of gradients depending on the injection direction.

[0304] In the embodiment, the first guide part 2210 and the second guide part 2220 are injected in the X-axis, and the injected length may be shorter than the housing 2020. In this case, when rails are arranged on the first guide part 2210 and the second guide part 2220, it is possible to minimize the occurrence of a gradient during injection, and there is a technical effect that the straight line of the rail is less likely to be distorted.

[0305] More specifically, Figure 35a is an oblique view of a first lens assembly 2110 in the actuator for the embodiment shown in Figure 34, and Figure 35b is an oblique view of the first lens assembly 2110 shown in Figure 35a with some components removed.

[0306] Referring to FIG. 34, an embodiment may include a first lens assembly 2110 that moves along a first guide portion 2210 and a second lens assembly 2120 that moves along a second guide portion 2220 .

[0307] 35A again, the first lens assembly 2110 may include a first lens barrel 2112a in which the first lens 2113 is disposed, and a first actuator housing 2112b in which the actuator 2116 is disposed. The first lens barrel 2112a and the first actuator housing 2112b may be a first housing, and the first housing may be in a barrel or lens barrel shape. The actuator 2116 may be a drive magnet, but is not limited thereto, and a coil may be disposed in some cases.

[0308] Also, the second lens assembly 2120 may include a second lens barrel (not shown) in which the second lens (not shown) is disposed, and a second actuator housing (not shown) in which the actuator (not shown) is disposed. The second lens barrel (not shown) and the second actuator housing (not shown) may be a second housing, and the second housing may be in a barrel or lens barrel shape. The actuator may be a actuator magnet, but is not limited thereto, and a coil may be disposed in some cases.

[0309] The drive portion 2116 may correspond to two first rails 2212 .

[0310] An embodiment may be actuated using a single ball or multiple balls. For example, an embodiment may include a first ball 2117 disposed between the first guide portion 2210 and the first lens assembly 2110, and a second ball (not shown) disposed between the second guide portion 2220 and the second lens assembly 2120.

[0311] For example, in an embodiment, the first ball 2117 may include a single or multiple 1-1 balls 2117a arranged on the upper side of the first actuator housing 2112b and a single or multiple 1-2 balls 2117b arranged on the lower side of the first actuator housing 2112b.

[0312] In this embodiment, the 1-1 ball 2117a of the first ball 2117 may move along the 1-1 rail 2212a, which is one of the first rails 2212, and the 1-2 ball 2117b of the first ball 2117 may move along the other 1-2 rail 2212b, which is the other of the first rails 2212.

[0313] According to this embodiment, the first guide portion is provided with a 1-1 rail and a 1-2 rail, and the 1-1 rail and the 1-2 rail guide the first lens assembly 2110, thereby achieving the technical effect of improving the accuracy of optical axis alignment with the second lens assembly 2120 when the first lens assembly 2110 moves.

[0314] 35b, in an embodiment, the first lens assembly 2110 may include a first assembly groove 2112b1 in which a first ball 2117 is disposed. The second lens assembly 2120 may include a second assembly groove (not shown) in which a second ball is disposed.

[0315] There may be a plurality of first assembly grooves 2112b1 of the first lens assembly 2110. In this case, the distance between two of the plurality of first assembly grooves 2112b1 based on the optical axis direction may be longer than the thickness of the first lens barrel 2112a.

[0316] In the embodiment, the first assembly groove 2112b1 of the first lens assembly 2110 may be V-shaped. Also, the second assembly groove (not shown) of the second lens assembly 2120 may be V-shaped. The first assembly groove 2112b1 of the first lens assembly 2110 may be V-shaped, U-shaped, or a shape that contacts the first ball 2117 at two or three points. The second assembly groove (not shown) of the second lens assembly 2120 may be V-shaped, U-shaped, or a shape that contacts the second ball at two or three points.

[0317] 34 and 35a, in an embodiment, the first guide portion 2210, the first ball 2117, and the first assembly groove 2112b1 may be disposed on a virtual straight line extending from the first side wall to the second side wall. The first guide portion 2210, the first ball 2117, and the first assembly groove 2112b1 may be disposed between the first side wall and the second side wall.

[0318] Next, FIG. 36 is a perspective view of the third lens assembly 2130 in the actuator according to the embodiment shown in FIG.

[0319] Referring to FIG. 36, in an embodiment, the third lens assembly 2130 may include a third housing 2021, a third barrel, and a third lens 2133.

[0320] In this embodiment, the third lens assembly 2130 has a barrel portion recess 2021r at the upper end of the third barrel, which allows the thickness of the third barrel of the third lens assembly 2130 to be uniform, thereby achieving the multiple technical effects of reducing the amount of injection material and improving the accuracy of numerical control.

[0321] Furthermore, according to the embodiment, the third lens assembly 2130 may include a housing rib 2021a and a housing recess 2021b in the third housing 2021.

[0322] In this embodiment, the third lens assembly 2130 has a housing recess 2021b in the third housing 2021, thereby reducing the amount of injected material and improving the accuracy of numerical control, while at the same time having a housing rib 2021a in the third housing 2021 to ensure strength, resulting in a complex technical effect.

[0323] FIG. 37 is a perspective view of a mobile terminal to which a camera module according to an embodiment is applied.

[0324] As shown in FIG. 37, the mobile terminal 1500 of the embodiment may include a camera module 1000, a flash module 1530, and an auto focus device 1510 provided on the rear surface.

[0325] The camera module 1000 may include an image capture function and an autofocus function, for example, the camera module 1000 may include an image-based autofocus function.

[0326] The camera module 1000 processes still or video image frames captured by an image sensor in a photography mode or a video call mode.

[0327] The processed image frames can be displayed on a predetermined display unit and stored in a memory. A camera (not shown) can also be disposed on the front side of the body of the mobile terminal.

[0328] 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 enable implementation of OIS along with AF or zoom functions.

[0329] The flash module 1530 may include a light emitting element for emitting light therein, and may be operated by the camera of the mobile terminal or by the user.

[0330] The autofocus device 1510 may include one of a package of surface emitting laser elements as a light emitter.

[0331] The autofocus device 1510 may include an autofocus function using a laser. The autofocus device 1510 may be used primarily in conditions where the autofocus function using the image of the camera module 1000 is degraded, such as in close proximity of less than 10 m or in dark environments.

[0332] The autofocus device 1510 may include a light emitting portion including a vertical cavity surface emitting laser (VCSEL) semiconductor device, and a light receiving portion such as a photodiode that converts optical energy into electrical energy.

[0333] FIG. 38 is a perspective view of a vehicle to which a camera module according to an embodiment is applied.

[0334] For example, FIG. 38 is an external view of a vehicle equipped with a vehicle driving assistance device to which the camera module 1000 according to the embodiment is applied.

[0335] 38, the vehicle VH of the embodiment may include wheels 13FL, 13FR that are rotated by a power source, and a predetermined sensor. The sensor may be, but is not limited to, a camera sensor 2000.

[0336] The camera 2000 may be a camera sensor to which the camera module 1000 according to the embodiment is applied. The vehicle VH according to the embodiment may acquire image information through the camera sensor 2000 that captures a front image or a surrounding image, and may determine an unidentified lane situation using the image information and generate a virtual lane when the lane is unidentified.

[0337] For example, the camera sensor 2000 may capture an image in front of the vehicle VH to obtain a front image, and a processor (not shown) may analyze an object included in the front image to obtain image information.

[0338] For example, when an object such as a lane, an adjacent vehicle, an obstacle, or an indirect road marking such as a median strip, a curb, or a roadside tree is captured in an image captured by the camera sensor 2000, the processor can detect such an object and include it in the image information. At this time, the processor can obtain distance information from the object detected through the camera sensor 2000 to further complement the image information.

[0339] The image information may be information about an object captured in an image. The camera sensor 2000 may include an image sensor and an image processing module.

[0340] The camera sensor 2000 can process still or moving images acquired by an image sensor (eg, CMOS or CCD).

[0341] The image processing module processes still or moving images acquired through the image sensor to extract necessary information and transmit the extracted information to a processor.

[0342] In this case, the camera sensor 2000 may include, but is not limited to, a stereo camera to improve the measurement accuracy of the object and to further obtain information such as the distance between the vehicle VH and the object.

[0343] The above description is centered on the embodiment, but it is merely illustrative and does not limit the present invention. Those skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the present embodiment. For example, each component specifically illustrated in the embodiment can be modified and implemented. Differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

Claims

1. housing; a mover having an optical member mounted thereon and disposed within said housing; a ball portion including a first ball and a second ball disposed between the housing and the mover; and a drive portion disposed within the housing for driving the mover; the mover includes a first projection including a recess extending toward the housing; the recess includes a side surface to which the ball portion is attached, and at least a portion of the recess includes a bottom surface in contact with the side surface; A plurality of the first protrusions are disposed on different surfaces, The driving unit rotates the mover based on a first direction or a second direction perpendicular to the first direction, the movers include an outer surface of a first mover, an outer surface of a second mover opposite to the outer surface of the first mover, and an outer surface of a third mover disposed between the outer surface of the first mover and the outer surface of the second mover; the first protrusions include a 1-1 protrusion disposed on an outer surface of the first mover, a 1-2 protrusion disposed on an outer surface of the second mover, and a 1-3 protrusion disposed on an outer surface of the third mover; The first-first protrusion and the first-second protrusion are disposed so as to overlap each other in the second direction. Camera actuator.

2. 2. The camera actuator of claim 1, wherein the recesses include a first recess located in the 1-1 protrusion, a second recess located in the 1-2 protrusion, and a third recess located in the 1-3 protrusion.

3. the first balls include a first-1 ball disposed in the first recess and a first-2 ball disposed in the second recess; The camera actuator of claim 2 , wherein the second ball is disposed in the third recess.

4. the first-1 ball contacts the bottom surface of the first recess at a first point; 4. The camera actuator of claim 3, wherein the first-second ball contacts a bottom surface of the second recess at a second point.

5. The camera actuator of claim 4 , wherein the first point and the second point overlap in the second direction.

6. The camera actuator according to claim 1 , wherein the first-1 protrusion and the first-2 protrusion are arranged to overlap each other in the second direction.

7. 2. The camera actuator of claim 1, wherein the first-third protrusion is disposed between the first-first protrusion and the first-second protrusion.

8. the driving unit includes a driving magnet and a driving coil; the drive magnet includes a first magnet, a second magnet, and a third magnet; the drive coil includes a first coil, a second coil and a third coil; the first magnet and the second magnet are disposed symmetrically about the first direction on the mover, the first coil and the second coil are disposed symmetrically about the first direction between the housing and the mover, the third magnet is disposed between the first magnet and the second magnet, The camera actuator of claim 1 , wherein the third coil is disposed between the first coil and the second coil.

Images